Changes for page 3.3 Control
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... ... @@ -1,1 +1,1 @@ 1 - drafts.bms-main-3.3\.Settings.WebHome1 +Battery management systems.BMS Main 3.3\. Configuration.WebHome - Content
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... ... @@ -1,10 +1,14 @@ 1 -1. 2 -11. 3 -111. Common settings 1 +(% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %) 2 += Configuration = 4 4 4 +(% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %) 5 +== Control == 6 + 7 +=== Common settings === 8 + 5 5 To change the common BMS settings, select the "Control → Common settings" section: 6 6 7 -[[image:173 3322611547-671.png]]11 +[[image:1735054851946-552.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]] 8 8 9 9 In this section: 10 10 ... ... @@ -12,10 +12,12 @@ 12 12 * Cell resistance – nominal (maximum) internal resistance of the cells, Ohm; 13 13 * Relax time (after charging) – a relaxation time after charging, second; 14 14 * Relax time (atfer discharging) – a relaxation time after discharging, second; 15 -* Number of cycles – a number of charge-discharge cycles; 16 -* Reset parameters – a command to reset cells state of charge, capacity, and resistance. 19 +* Reset parameters – a command to reset cells state of charge, capacity, and resistance; 20 +* Method of calculating the battery voltage: 21 +** Summation of cell voltages – the overall voltage is calculated as on sum of all cells in the battery; 22 +** Using voltage before contactors – the overall voltage is estimated as voltage before contactors measured by BMS. 17 17 18 -The values “Capacity” ,“Resistance”,“Cycles”are used to calculate the SOC of cells and the battery.24 +The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery. 19 19 20 20 The values of “Relax time” are used to determine the state of the battery. If the battery is in a state of relaxation, the system recalculates the voltage on the cells to the state of charge of the battery. 21 21 ... ... @@ -27,11 +27,8 @@ 27 27 28 28 The “Reset parameters” command is used for starting-up and adjustment of the battery. 29 29 36 +=== SOC estimation === 30 30 31 -1. 32 -11. 33 -111. SOC estimation 34 - 35 35 The BMS Main 3 device calculates the state of charge of the battery (SOC) using two algorithms: 36 36 37 37 * by open circuit voltage; ... ... @@ -41,8 +41,9 @@ 41 41 42 42 To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section: 43 43 44 -[[image:1733322611549-423.png]] 45 45 48 +[[image:1735056107942-306.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]] 49 + 46 46 The following estimation algorithms supported: 47 47 48 48 * Voltage – by open circuit voltage; ... ... @@ -60,13 +60,14 @@ 60 60 61 61 To change the algorithm for calculating the Final SOC, select the "Control → SOC estimation → Final SOC" section: 62 62 63 -[[image:1733322611551-852.png]] 67 +[[image:1733322611551-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="148" width="800"]] 64 64 65 65 The following calculation methods are supported (“Final SOC”): 66 66 67 67 * Minimal SOC – the battery SOC is assumed to be the minimum SOC among the cells; 68 68 * Average SOC – the battery SOC is taken equal to the arithmetic average of the cell SOC; 69 -* Min-Max SOC – the battery SOC is taken based on the minimum and maximum SOC of the cells (recommended method). 73 +* Min-Max SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if any cell has 100% SOC, b) 0% if any cell has 0% SOC; 74 +* Max-Min SOC – the battery SOC is calculated based on the minimum and maximum SOC of the cells. Final SOC will be a) 100% if all cells have 100% SOC, b) 0% if all cells have 0% SOC. 70 70 71 71 Other parameters: 72 72 ... ... @@ -80,15 +80,13 @@ 80 80 * Coulomb counting correction (temperature) – the dependence of battery capacity on temperature; 81 81 * Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles. 82 82 83 -1. 84 -11. 85 -111. SOC correction 88 +=== SOC correction === 86 86 87 -The BMS Main 3 device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see section** **2.3.2).90 +The BMS Main 3 device can recalculate the battery SOC after long-term storage or after long-term working in the case when the battery was not charged fully or discharged totally. Recalculation is done based on the tabular dependency Uocv = Uocv (SOC, t) (see [[SOC estimation>>doc:||anchor="HSOCestimation"]]). 88 88 89 89 To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section: 90 90 91 -[[image:1733322624656-766.png]] 94 +[[image:1733322624656-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="121" width="800"]] 92 92 93 93 In this section: 94 94 ... ... @@ -99,30 +99,35 @@ 99 99 * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset); 100 100 * Last correction timestamp – time when last correction was made. 101 101 105 +=== Resistance estimation === 102 102 103 -1. 104 -11. 105 -111. Resistance estimation 106 - 107 107 Calculation of the resistance of cells is carried out in two ways. The first method is used when the battery passes from a relaxation state to a charge or discharge state, wherein the cell resistance value 108 108 109 -R = (U-U,,ocv,,) / I,,stable,,, 109 +{{formula fontSize="SMALL" imageType="PNG"}} 110 +R = \frac{U-U_{ocv}}{I_{stable}} 111 +{{/formula}} 110 110 111 -where U isthe cell voltage measured in the charge or discharge state, V; U,,ocv,,is thecell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,,–stabilized current through the cell in the state of charge or discharge.113 +where U — the cell voltage measured in the charge or discharge state, V; U,,ocv,, — cell voltage measured in the state of relaxation (before switching to the state of charge or discharge); I,,stable,, — stabilized current through the cell in the state of charge or discharge. 112 112 113 113 The second method is used for a stepwise change in the current through the cell, while the value of the cell resistance: 114 114 115 -R = (U,,2,,-U,,1,,) / (I,,stable2,,-I,,stable1,,) provided that | I,,stable2,,-I,,stable1,, | > 0.2 × Q,,max,, 117 +{{formula fontSize="SMALL"}} 118 +R = \frac{U_2-U_1}{I_{stable2}-I_{stable1}} 119 +{{/formula}} 116 116 117 - (Q,,max,,isthe maximum cell capacity),121 +provided that 118 118 119 -where U,,2,, is the voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, – the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it. 123 +{{formula fontSize="SMALL"}} 124 +| I_{stable2}-I_{stable1} | > 0.2 × Qmax 125 +{{/formula}} 120 120 127 +where Q,,max,, — the maximum cell capacity,U,,2,, — voltage on the cell at the moment when the stabilized current I,,stable2,, is flowing through it; U,,1,, — the voltage on the cell at the moment when the stabilized current I,,stable1,, flowing through it. 128 + 121 121 The stabilized current I,,stable,, = I, if during the stabilization time the instantaneous current I is in the range from 0.95 × I to 1.05 × I. 122 122 123 123 To change parameters of the algorithm for calculating the cell resistance, select the "Control → Resistance estimation" section: 124 124 125 -[[image:1733322624659-473.png]] 133 +[[image:1733322624659-473.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="108" width="800"]] 126 126 127 127 In this section: 128 128 ... ... @@ -132,16 +132,13 @@ 132 132 * Minimum SOC – minimum cell SOC value for resistance calculation; 133 133 * Maximum SOC – maximum cell SOC value for resistance calculation. 134 134 135 -The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance/2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see se ction2.3.1). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance).143 +The calculated resistance is accepted by the system as valid (and therefore updated) if its value is in the range from Resistance / 2 to “Maximum resistance factor” × Resistance, where "Resistance" is the nominal resistance of the cell (see [[Common settings>>doc:||anchor="HCommonsettings"]]). If the calculated resistance value is greater than the value (Maximum resistance factor × Resistance), the updated resistance value will be equal to the value (Maximum resistance factor × Resistance). 136 136 145 +=== Low SOC (signal) === 137 137 138 -1. 139 -11. 140 -111. Low SOC (signal) 141 - 142 142 To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section: 143 143 144 -[[image:1733322624660-513.png]] 149 +[[image:1733322624660-513.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="116" width="800"]] 145 145 146 146 In this section: 147 147 ... ... @@ -160,16 +160,16 @@ 160 160 161 161 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time. 162 162 168 +(% class="box infomessage" %) 169 +((( 163 163 The "Low SOC signal" is indicative and can be output to a discrete output or a power switch. 171 +))) 164 164 173 +=== High charging current (signal) === 165 165 166 -1. 167 -11. 168 -111. High charging current (signal) 169 - 170 170 To change the parameters of the generation high-current signal, select the "Control → High charging current (signal)" section: 171 171 172 -[[image:1733322624661-915.png]] 177 +[[image:1733322624661-915.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]] 173 173 174 174 In this section: 175 175 ... ... @@ -188,13 +188,13 @@ 188 188 189 189 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time. 190 190 196 +(% class="box infomessage" %) 197 +((( 191 191 The "High charging current" signal is indicative and can be output to a discrete output or a power switch. 199 +))) 192 192 201 +=== Charge map === 193 193 194 -1. 195 -11. 196 -111. Charge map 197 - 198 198 The BMS Main 3 device calculates the maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage. 199 199 200 200 Calculated current values are sent to a charger or an intellectual load over the CAN bus. External devices based on received data provide correct battery operation. ... ... @@ -201,7 +201,7 @@ 201 201 202 202 To configure parameters for determining the charge current limit, select the "Control → Charge map" section: 203 203 204 -[[image:173 3322637793-171.png]]209 +[[image:1735064362593-844.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]] 205 205 206 206 In this section: 207 207 ... ... @@ -208,24 +208,21 @@ 208 208 * Enable – a flag to start calculation of the charge current limit; 209 209 * Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A; 210 210 * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s; 211 -* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current 216 +* Option 1: Limit charge current by the battery SOC and temperature – a flag to enable correction of maximum allowable charging current** Kcs** depending on __maximum cell SOC__ and battery temperature; 212 212 * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature; 213 -* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on contactor temperature; 218 +* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature; 214 214 * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature; 215 -* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current Kcv depending on maximum cell voltage ;220 +* Option 3: Limit charge current by the maximum cell voltage - a flag to enable correction of maximum allowable charging current **Kcv** depending on __the maximum cell U,,ocv,, voltage__ (corrected due to current and cell resistance) 216 216 * Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage; 217 -* Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current Kct depending on maximum cell temperature; 222 +* Option 4: Limit charge current by the cell temperature - a flag to enable correction of maximum allowable charging current **Kct** depending on maximum cell temperature; 218 218 * Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature. 219 219 220 220 Value of the charge current limit at given SOC, temperature, contactors temperature, maximum cell voltage and maximum cell temperature is calculated as follows: 221 221 222 -Charg ingcurrent limit = Maximum chargingcurrent × Kcs × Kcc × Kcv × Kct227 +**Charge current limit = Maximum charge current × Kcs × Kcc × Kcv × Kct** 223 223 229 +=== Discharge map === 224 224 225 -1. 226 -11. 227 -111. Discharge map 228 - 229 229 The BMS Main 3 device calculates the maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage. 230 230 231 231 Calculated current values are sent to a charger or an intellectual load over the CAN bus. ... ... @@ -232,7 +232,7 @@ 232 232 233 233 To configure parameters for determining the discharge current limit, select the "Control → Discharge map" section: 234 234 235 -[[image:173 3322637795-310.png]]237 +[[image:1735064399985-526.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="800"]] 236 236 237 237 In this section: 238 238 ... ... @@ -239,29 +239,26 @@ 239 239 * Enable – a flag to start calculation of the discharge current limit; 240 240 * Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A; 241 241 * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s; 242 -* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current Kds depending on SOC and temperature; 244 +* Option 1: Limit discharging current by the battery SOC and temperature – a flag to enable correction of maximum allowable discharging current **Kds **depending on __minimum cell SOC__ and temperature; 243 243 * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature; 244 -* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on contactor temperature; 246 +* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature; 245 245 * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature; 246 -* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current Kdv depending on minimum cell voltage ;248 +* Option 3: Limit discharge current by the cell voltage - a flag to enable correction of maximum allowable discharging current **Kdv** depending on __the minimum cell U,,ocv,, voltage__ (corrected due to current and cell resistance) 247 247 * Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage; 248 -* Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current Kdt depending on maximum cell temperature; 250 +* Option 4: Limit discharge current by the cell temperature - a flag to enable correction of maximum allowable discharging current **Kdt** depending on maximum cell temperature; 249 249 * Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature. 250 250 251 251 Value of the discharge current limit at given SOC, temperature, contactors temperature, minimum cell voltage and maximum cell temperature is calculated as follows: 252 252 253 -Discharg ingcurrent limit = Maximum dischargingcurrent × Kds × Kdc × Kdv × Kdt255 +**Discharge current limit = Maximum discharge current × Kds × Kdc × Kdv × Kdt** 254 254 257 +=== Charge map (PEAK & CONTINUOUS) === 255 255 256 -1. 257 -11. 258 -111. Charge map (PEAK & CONTINUOUS) 259 - 260 260 The BMS Main 3 has an alternative algorithm for the maximum allowed charging current based on peak and continuous battery operating modes. 261 261 262 262 To configure parameters for determining the charge current limit, select the "Control → Charge map (PEAK & CONTINUOUS)" section: 263 263 264 -[[image:173332 2637796-187.png]]263 +[[image:1735064434321-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]] 265 265 266 266 In this section: 267 267 ... ... @@ -276,22 +276,19 @@ 276 276 277 277 The maximum charging current value equals to the peak or continuous current according to the following diagram: 278 278 279 -[[image:1733322717451-608.png]] 278 +[[image:1733322717451-608.png||data-xwiki-image-style-alignment="center"]] 280 280 281 281 I,,peak,, = Maximum PEAK charge current × K,,cp,, 282 282 283 283 I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,, 284 284 284 +=== Discharge map (PEAK & CONTINUOUS) === 285 285 286 -1. 287 -11. 288 -111. Discharge map (PEAK & CONTINUOUS) 289 - 290 290 The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes. 291 291 292 292 To configure parameters for determining the discharge current limit, select the "Control → Discharge map (PEAK & CONTINUOUS)" section: 293 293 294 -[[image:173 3322735595-661.png]]290 +[[image:1735064454708-345.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="124" width="800"]] 295 295 296 296 In this section: 297 297 ... ... @@ -306,17 +306,126 @@ 306 306 307 307 The maximum discharging current value equals to the peak or continuous current according to following diagram: 308 308 309 -[[image:1733322753429-968.png]] 305 +[[image:1733322753429-968.png||data-xwiki-image-style-alignment="center"]] 310 310 311 311 I,,peak,, = Maximum PEAK discharge current × K,,dp,, 312 312 313 313 I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,, 314 314 311 +=== Main contactor === 315 315 316 -1. 317 -11. 318 -111. Charge 313 +The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors. 319 319 315 +The Main contactor algorithm supports the following modes: 316 + 317 +* Always on; 318 +* Automatic. 319 + 320 +In “Always on” mode main contactor closes if all the following is true: 321 + 322 +* Other contactors are open; 323 +* There are no errors from the "Errors 1, 2 ..." bitfileds. 324 + 325 +In “Always on” mode main contactor opens if all the following is true: 326 + 327 +* Other contactors are open; 328 +* There is an error from the the "Errors 1, 2 ..." bitfileds. 329 + 330 +In “Automatic” mode, the main contactor closes by internal algorithms at the same time with other contactors. 331 + 332 +In “On demand” mode, the main contactor closes by external the “Close Main contactor” request. 333 + 334 +(% class="box infomessage" %) 335 +((( 336 +**Note: **when errors occur in the system, the **Main **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below). 337 +))) 338 + 339 +To change the parameters of the main contactor, select the "Control → Main contactor" section: 340 + 341 +[[image:1735064488658-863.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]] 342 + 343 +In this section: 344 + 345 +* Enable – a flag to enable the main contactor control; 346 +* Algorithm – main contactor control algorithm: 347 +** Always on – contactor is always closed; 348 +** Automatic – contactor closes by internal charge and discharge algorithms; 349 +** On demand – contactor is closed by an external request; 350 +* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed; 351 +* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s; 352 +* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset; 353 +* Errors 1, 2 to open the main contactor – bitfields to choose the errors which will open the main contactor. 354 + 355 +=== Charging status === 356 + 357 +To change the parameters of charging process status, select the "Control → Charging status" section: 358 + 359 +[[image:1735064935499-941.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]In this section: 360 + 361 +* Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A; 362 +* Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A; 363 +* Voltage to clear the “Ready to charge” – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared; 364 +* Voltage to reset the “Ready to charge” – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set; 365 +* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0; 366 +* Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal. 367 + 368 +(% class="box infomessage" %) 369 +((( 370 +**Note:** The "Allow charging" signal activates under two independent conditions: 371 +1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 372 +2) the "Delay before recharging" time has passed since the opening of the allow charging contactor. 373 +))) 374 + 375 +=== Discharging status === 376 + 377 +To change the parameters of discharging process status, select the "Control → Discharging status" section: 378 + 379 +[[image:1735064980481-209.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]In this section: 380 + 381 +* Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А; 382 +* Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А; 383 +* Voltage to clear the “Ready to discharge” – a threshold U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared; 384 +* Voltage to reset the “Ready to discharge” – a tolerant U,,ocv,, (corrected due to current and cell resistance) voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set; 385 +* Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal. 386 + 387 +=== Precharge === 388 + 389 +The BMS Main 3 device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor. 390 + 391 +BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit. 392 + 393 +TBA 394 + 395 +To change the parameters of precharge contactor, select the "Control → Precharge" section: 396 + 397 +[[image:1735065073836-743.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]] 398 + 399 +* Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A; 400 +* Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor; 401 +* Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V; 402 +* Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error"; 403 +* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond; 404 +* Relaxation between attempts – a duration between precharge attempts, millisecond; 405 +* Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor; 406 +* Precharge resistor resistance, Ohm; 407 +* Maximum allowable power dissipated in the resistor, W; 408 +* Delay before setting the "Precharge error" when checking power, millisecond; 409 +* Delay before clearing the "Precharge error", second; 410 +* Lock the "Precharge error" – a flag to block the error until the device is restarted. 411 + 412 +“Precharge error” generation conditions if any of the following is true: 413 + 414 +* the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts"; 415 +* voltages before and after contactors are not equal during the "Precharge time" after "Number of precharging attempts"; 416 +* power dissipated on the precharge resistor is above the maximum value during the “Delay before setting the 'Precharge error' when checking power” time. 417 + 418 +(% class="box warningmessage" %) 419 +((( 420 +Behavior of contactors at “Precharge error” is configured in corresponding contactor settings! 421 +))) 422 + 423 +=== Charge === 424 + 320 320 There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging. 321 321 322 322 The device supports three charge control algorithms: ... ... @@ -325,49 +325,36 @@ 325 325 * On charger connected – charging is allowed when there is a signal “Charger connected”; 326 326 * On charge request – charging is allowed when there is a signal “Charge request”. 327 327 328 -If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors appears: 433 +If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals: 329 329 330 -* Overvoltage; 331 -* Overcurrent; 332 -* High temperature (CH); 333 -* Low temperature (CH); 334 -* HYG offline (optional); 335 -* Combilift offline (optional); 336 -* Spirit offline (optional); 337 -* Spirit charger error (optional); 338 -* Short circuit (optional); 339 -* High contactor temperature (optional); 340 -* CH contactor cycles error; 341 -* Precharge error (optional); 342 -* Critical error 435 +* Service reset; 436 +* Power down request; 437 +* Inhibit charging, 343 343 344 -or one of the signals: 345 - 346 -* Service reset 347 -* Power down request 348 -* Inhibit charging 349 - 350 350 both contactors are open (no current flows). 351 351 352 352 When the algorithm "**On charger connected**" is selected, the control is performed as follows: 353 353 354 -* If there is a signal “Charger connected” and there are no errors (see the listabove), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;443 +* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close; 355 355 * If the signal “Charger connected” disappears, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens; 356 356 * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed); 357 -* If errors inthelistabove occur the charging contactor and allow charging contactor open.446 +* If errors from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open. 358 358 359 359 When the "**On charge request**" algorithm selected, the control is performed as follows: 360 360 361 -* If there is a signal “Charge request” and there are no errors (see the listabove), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;450 +* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close; 362 362 * If the signal “Charge request” disappears, the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens; 363 363 * If in the process of charging the voltage on the cell exceeds the “Ready to charge” level, the allow charging contactor opens (while the charging contactor remains closed); 364 -* If errors inthelistabove occur the charging contactor and allow charging contactor open.453 +* If errors from the "Errors 1, 2 ..." bitfields occur the charging contactor and allow charging contactor open. 365 365 366 -Note – When errors occur in the system, the charging contactor opens either immediately or with the delay T,,off,, (depends on the settings described below). 455 +(% class="box infomessage" %) 456 +((( 457 +**Note: **when errors occur in the system, the **Charge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below). 458 +))) 367 367 368 368 To change the parameters of the battery charge control algorithm, select the "Control → Charge" section: 369 369 370 -[[image:17333 22798914-813.png]]462 +[[image:1735063563460-549.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="262" width="800"]] 371 371 372 372 In this section: 373 373 ... ... @@ -376,24 +376,17 @@ 376 376 ** Always on – charging is always allowed; 377 377 ** On charger connected – charging is allowed when there is a signal “Charger connected”; 378 378 ** On charge request – charging is allowed when there is a signal “Charge request”; 379 -* Current corresponding to charging – a current level to generate the "Charging current present" signal, A; 380 -* Current corresponding to no charging – a current level to clear the "Charging current present" signal, A; 471 +* Allow charging only when the "Ready to charge" signal is set – charging contactor will open if "Ready to charge" signal is cleared; 381 381 * Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond; 382 382 * Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond; 474 +* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the charge contactor (see [[Precharge>>path:#HPrecharge]]); 475 +* Errors 1, 2 to open the charging contactor – bitfields to choose the errors which will open the charging contactor; 383 383 * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors; 384 -* Custom delay: <error> – specific error delay, millisecond;477 +* Custom delay: <error> – delay for specific error, millisecond; 385 385 * Switch off the charging contactor on errors without delay – a flag to protectively open the charging contactor without a delay. In the opposite case, when an error is detected, the charging contactor opens always with the delay “Delay before stopping charging”; 386 -* Control the precharging contactor – a flag that allows control of the precharging contactor; 387 -* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared; 388 -* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set; 389 -* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0. 390 390 391 - Note– The allow charging contactor closes under two independentconditions: 1) the voltage on the cellsreaches the “Voltageto reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.480 +=== Discharge === 392 392 393 -1. 394 -11. 395 -111. Discharge 396 - 397 397 The device controls the discharging contactor to connect battery to the load. 398 398 399 399 The device supports three algorithms to control battery discharging: ... ... @@ -402,26 +402,8 @@ 402 402 * On charger disconnected – load is connected when there is no signal “Charger connected”; 403 403 * On discharge request – load is connected when there is signal “Discharge request”. 404 404 405 -When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors appears: 490 +When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals: 406 406 407 -* Undervoltage; 408 -* Overvoltage (optional); 409 -* Overcurrent; 410 -* High temperature (DCH); 411 -* Low temperature (DCH) (optional); 412 -* HYG offline (optional); 413 -* Combilift offline (optional); 414 -* Spirit offline (optional); 415 -* Spirit charger error (optional); 416 -* Short circuit (optional); 417 -* High contactor temperature (optional); 418 -* Unallowable charging; 419 -* DCH contactor cycles error; 420 -* Precharge error (optional); 421 -* Critical error 422 - 423 -or one of the signals: 424 - 425 425 * Service reset 426 426 * Power down request 427 427 * Inhibit discharging ... ... @@ -430,24 +430,23 @@ 430 430 431 431 If the algorithm "**On charger disconnected**" is selected, the control is performed as follows: 432 432 433 -* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the listabove), then through the delay time T,,on,, the discharging contactor closes;434 -* If the signal “Charger connected” appears or errors occur (see the listabove), then after the delay time T,,off,, the discharging contactor opens.500 +* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes; 501 +* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens. 435 435 436 436 When the "**On discharge request**" algorithm selected, the control is performed as follows: 437 437 438 -* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the listabove), then through the delay time T,,on,, the discharging contactor closes;439 -* If the signal “Discharge request” disappears or errors occur (see the listabove), then after the delay time T,,off,, the discharging contactor opens.505 +* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes; 506 +* If the signal “Discharge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens. 440 440 441 -Note – In case of errors in the system operation, the opening of the discharging contactor is performed either immediately or with a delay T,,off,, (depends on the settings described below). 508 +(% class="box infomessage" %) 509 +((( 510 +**Note: **when errors occur in the system, the **Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below). 511 +))) 442 442 443 -The device supports controlling the precharging contactor. The duration of switching on the precharging contactor before closing the discharging (load) contactor is adjusted. 444 - 445 445 To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section: 446 446 447 -[[image: file:///C:/Users/INASIB~~1/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png||alt="A screenshotof a computer515 +[[image:1735064038329-836.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="273" width="800"]] 448 448 449 -Description automatically generated"]] 450 - 451 451 In this section: 452 452 453 453 * Enable – a flag to activate the discharge control; ... ... @@ -455,39 +455,54 @@ 455 455 ** Always on – load is always connected; 456 456 ** On charger disconnected – load is connected when there is no signal “Charger connected”; 457 457 ** On discharge request – load is connected when there is signal “Discharge request”; 458 -* Current corresponding to discharging – a current level to generate the "Discharging current present" signal, А; 459 -* Current indicating no discharging – a current level to clear the "Discharging current present" signal, А; 524 +* Allow charging only when the "Ready to discharge" signal is set – discharging contactor will open if "Ready to discharge" signal is cleared; 460 460 * Delay before starting discharging – a time delay T,,on,, before closing the discharging contactor, millisecond; 461 461 * Delay before stopping discharging – a time delay T,,off,, before opening the discharging contactor, millisecond; 527 +* Control the precharging contactor – a flag that allows control of the precharging contactor while closing the discharge contactor (see [[Precharge>>doc:||anchor="HPrecharge"]]); 528 +* Errors 1, 2 to open the discharging contactor – bitfields to choose the errors which will open the discharging contactor; 462 462 * Use custom delays before stopping discharging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors; 463 463 * Custom delay: <error> – specific error delay, millisecond; 464 464 * Switch off the discharging contactor on errors without delay – a flag to protectively open the discharging contactor without a delay. In the opposite case, when an error is detected, the discharging contactor opens always with the delay “Delay before stopping discharging”. 465 -* Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond; 466 -* Check voltages before and after contactors to finish precharging – a flag to check the voltages before and after contactors to ensure that precharge process has finished and it is allowed to close the discharging contactor; 467 -* Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V; 468 -* Voltage to clear the “Ready to discharge” – a threshold voltage level on the cell, V; if the voltage of any cell is below this level, the “Ready to discharge” signal is cleared; 469 -* Voltage to reset the “Ready to discharge” – a tolerant voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set; 470 470 533 +=== Charge/Discharge === 471 471 472 -1. 473 -11. 474 -111. Charge/Discharge 535 +The BMS Main 3 device can control the charge/discharge contactor, which combines algorithms of charging and discharging contactor. 475 475 476 - The BMS Main 3 device can control the charging/dischargingcontactor,whichcombinesalgorithms ofcharging and discharging contactor. It behaves as a charging contactor when “Charge request” or “Charger connected”is set,otherwise – as a discharging contactor.537 +Charge/Discharge contactor has three algorithms of operation: 477 477 539 +* Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor; 540 +* Independent (Always) - Charge/Discharge contactor is always closed if there is no errors; 541 +* Independent (on Charge request or Discharge request) - Charge/Discharge contactor is based on its own controller that listen to Charge and Discharge requests and closes if one of these signals occurs. 542 + 543 +TBA 544 + 545 +(% class="box infomessage" %) 546 +((( 547 +**Note: **when errors occur in the system, the **Charge/Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below). 548 +))) 549 + 478 478 The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section: 479 479 480 -[[image:173 3322827919-875.png]]552 +[[image:1735122153011-166.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="800"]] 481 481 482 482 In this section: 483 483 484 484 * Enable – a flag to enable the charge/discharge controller. 557 +* Algorithm: 558 +** Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor; 559 +** Independent (Always) - Charge/Discharge contactor is always closed if there is no errors; 560 +** Independent (on Charge request or Discharge request); 561 +* Delay before starting charging or discharging, millisecond; 562 +* Delay before stopping charging or discharging, millisecond; 563 +* Control the precharging contactor – a flag that enables control of precharging contactor while closing the charge/discharge contactor; 564 +* Emulate the "Charging" and "Discharging" signals – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor; 565 +* Errors 1, 2 to prevent CHARGING through charging/discharging contactor, Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor – bitfields to choose the errors which will open the charging/discharging contactor. This bitfields are combined by bitwise OR and intended to separate settings for charging and discharging processes; 566 +* Errors 1, 2 which affect the contactor only if battery CHARGING is detected – a bitfield to choose the errors which will trigger only if charging current is present. This bitfield is combined with "Errors 1, 2 to prevent CHARGING through charging/discharging contactor" by bitwise AND; 567 +* Errors 1, 2 which affect the contactor only if battery DISCHARGING is detected – a bitfield to choose the errors which will trigger only if discharging current is present. This bitfield is combined with "Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor" by bitwise AND; 568 +* Switch off the charging/discharging contactor on errors without delay – a flag to protectively open the charging/discharging contactor without a delay. In the opposite case, when an error is detected, the charging/discharging contactor opens always with the delay “Delay before stopping discharging”. 485 485 570 +=== Discharge (AUX) === 486 486 487 -1. 488 -11. 489 -111. Discharge (AUX) 490 - 491 491 The BMS Main 3 device can control the power supply of external equipment using the auxiliary (AUX) discharging contactor. An example of external equipment can be an inverter that converts DC to AC to power a service laptop and other devices. 492 492 493 493 The power supply circuit of the external equipment using the auxiliary (AUX) discharging contactor is independent of the battery load circuit. The closing and opening of the auxiliary (AUX) discharging contactor is performed according to its program. ... ... @@ -496,11 +496,11 @@ 496 496 497 497 * the battery has low SOC; 498 498 * the battery voltage is out of range; 499 -* the battery system errors are detected.580 +* the errors are detected (configured in the "Errors 1, 2 ..." bitfields). 500 500 501 501 To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section: 502 502 503 -[[image:173 3322827920-878.png]]584 +[[image:1735066190419-838.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]] 504 504 505 505 In this section: 506 506 ... ... @@ -508,72 +508,16 @@ 508 508 * Switch off the discharging (AUX) contactor if the SOC is too low; 509 509 * Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging contactor opens, %; 510 510 * Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging contactor re-closes, %; 592 +* Switch off the discharging (AUX) contactor if the cell voltage is out of the range; 593 +* Minimum cell voltage, V; 594 +* Maximum cell voltage, V; 511 511 * Switch off the discharging (AUX) contactor if the battery voltage is out of the range; 512 -* Minimum voltage – minimumbattery voltage, V;513 -* Maximum voltage – maximumbattery voltage, V;514 -* Switchoff the discharging(AUX)contactoronerrors –the auxiliary(AUX)discharging contactoropensif thefollowingerrorsoccur:Undervoltage,Overcurrent,Hightemperature(DCH), Short circuit, Critical error.596 +* Minimum battery voltage, V; 597 +* Maximum battery voltage, V; 598 +* Errors 1, 2 to open the auxiliary discharging contactor – bitfields to choose the errors which will open the auxiliary discharging contactor. 515 515 516 -1. 517 -11. 518 -111. Main contactor 600 +=== Cell balancing === 519 519 520 -The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors. 521 - 522 -The Main contactor algorithm supports the following modes: 523 - 524 -* Always on; 525 -* Automatic; 526 -* On demand. 527 - 528 -In “Always on” mode main contactor closes if all the following is true: 529 - 530 -* Charging contactor is open; 531 -* Discharging contactor is open; 532 -* There are no errors from the list below: 533 -** Overcurrent; 534 -** Undervoltage; 535 -** Overvoltage; 536 -** High temperature (CH); 537 -** High temperature (DCH); 538 -** Unallowable charging; 539 -** Critical error. 540 - 541 -In “Always on” mode main contactor opens if all the following is true: 542 - 543 -* Charging contactor is open; 544 -* Discharging contactor is open; 545 -* There is an error from the list below: 546 -** Overcurrent; 547 -** Undervoltage; 548 -** Overvoltage; 549 -** High temperature (CH); 550 -** High temperature (DCH); 551 -** Unallowable charging; 552 -** Critical error. 553 - 554 -In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors. 555 - 556 -In “On demand” mode, the main contactor closes by external the “Close Main contactor” request. 557 - 558 -To change the parameters of the main contactor, select the "Control → Main contactor" section: 559 - 560 -[[image:1733322872744-536.png]] 561 - 562 -In this section: 563 - 564 -* Enable – a flag to enable the main contactor control; 565 -* Algorithm – main contactor control algorithm: 566 -** Always on – contactor is always closed; 567 -** Automatic – contactor closes by internal charge and discharge algorithms; 568 -** On demand – contactor is closed by an external request; 569 -* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed; 570 -* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s; 571 -* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset. 572 - 573 -1. 574 -11. 575 -111. Cell balancing 576 - 577 577 Balancing makes the voltage of all cells equal to the minimum cell voltage. 578 578 579 579 The following balancing rules are supported: ... ... @@ -585,20 +585,25 @@ 585 585 A balancing resistor is connected to the cell if the following conditions are simultaneously met: 586 586 587 587 * the voltage on the cell is higher than the balancing start voltage; 588 -* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold .613 +* the difference between the voltage on the cell and the minimum voltage among the battery cells is greater than the balancing start threshold; 589 589 590 590 A balancing resistor is disconnected from the cell if any of the following conditions are met: 591 591 592 -* the voltage on the cell is less than the balancing st artvoltage;617 +* the voltage on the cell is less than the balancing stop voltage; 593 593 * the difference between the voltage on the cell and the minimum voltage among the battery cells is less than the balancing stop threshold. 594 594 620 +(% class="box infomessage" %) 621 +((( 595 595 If the “High logic temperature” occurs, then the balancing of the cells connected to the overheated BMS Logic device will not be performed. 623 +))) 596 596 597 597 The BMS Main 3 can enable the cell balancing by the external “Balancing request” signal. Balancing process will be started to cells which the voltage is higher than the balancing start voltage and the difference between the cell voltage and the minimum voltage among all the cells is greater than the balancing stop threshold. 598 598 627 +BMS Main 3 can force a cell balancing, if its voltage is higher than estimated value. 628 + 599 599 To change the cell balancing parameters, select the "Control → Cell balancing" section: 600 600 601 -[[image:173 3322883460-118.png]]631 +[[image:1735065702806-422.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]] 602 602 603 603 In this section: 604 604 ... ... @@ -607,19 +607,18 @@ 607 607 ** Balance on charge – balancing is performed while and after the charging (in the “Charge ON” and “Charge OFF” states); 608 608 ** Balance on charge or relaxed - balancing is performed while and after the charging and in the relaxed state (in “Charge ON”, “Charge OFF”, “Relaxed (after charging)” and “Relaxed (after discharging)” states); 609 609 ** Balance always – balancing is always performed regardless the battery state; 610 - 611 - [[image:1733322883462-975.png]]612 - 640 +* Balancing condition: 641 +** Automatic – balancing will be performed automatically if needed conditions are met; 642 +** On balancing request – balancing will start only if a remote request is received. In this case cells will start to balance regardless the "Voltage deviation to start balancing" value; 613 613 * Minimum cell voltage to start balancing, V; 614 614 * Voltage deviation to start balancing; 615 615 * Voltage deviation to stop balancing; 646 +* Voltage for forced balancing – if cell voltage is above this value, it will start discharging through balancing resistor; 647 +* Maximum allowable temperature of BMS Logic devices, ºC; 616 616 * Command to discharge all cells – a flag to force the balancing of all cells. 617 617 650 +=== Series balancing === 618 618 619 -1. 620 -11. 621 -111. Series balancing 622 - 623 623 The BMS Main 3 device supports work with two independent (galvanically unrelated) cell series. To monitor the status of two series, two current sensors are used. A series of cells must be equivalent: they must have the same number of cells and the same capacity. 624 624 625 625 Since the series of cells can operate at different loads, they must be balanced. For this, the BMS Main 3 provides two signals to power switches: “Balancing series 1” and “Balancing series 2”, as well as a combined algorithm that considers both the voltage of each series and the charge that these series gave load. The “Balancing series 1” and “Balancing series 2” signals are used to connect high-power balancing resistors in parallel with cell series 1 and 2. ... ... @@ -633,7 +633,7 @@ 633 633 634 634 To change the series balancing parameters, select the "Control → Series balancing" section: 635 635 636 -[[image:1733322892811-410.png]] 665 +[[image:1733322892811-410.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="126" width="800"]] 637 637 638 638 In this section: 639 639 ... ... @@ -643,13 +643,10 @@ 643 643 * Balancing threshold, V; 644 644 * Coulomb threshold – the difference of the charges Qthr, given by a series of cells, above which balancing to be started, Ah; 645 645 * Period – a period to reset of charge counters for each series (to avoid accumulation of error), second; 646 -* Do not sum series voltages – a flag to disable the summing of series voltages. 675 +* Do not sum series voltages – a flag to disable the summing of series voltages.3 647 647 677 +=== Power down === 648 648 649 -1. 650 -11. 651 -111. Power down 652 - 653 653 The BMS Main 3 device can shut down itself if the battery voltage is low or the battery is idle for a long time. 654 654 655 655 Shutting down the battery system is performed according to the following conditions: ... ... @@ -661,7 +661,7 @@ 661 661 662 662 To change the parameters of the power down control, select the "Control → Power down" section: 663 663 664 -[[image:1733322892813-562.png]] 690 +[[image:1733322892813-562.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]] 665 665 666 666 In this section: 667 667 ... ... @@ -671,13 +671,11 @@ 671 671 * Power down if KEYRUN and CHARGE_ON are cleared – a flag to power down the device if KEYRUN and CHARGE_ON signals are cleared; 672 672 * Delay before setting the internal power down signal – a delay before turning off the device power when removing KEYRUN and CHARGE_ON or receiving the “Power down request” command, ms. 673 673 674 -1. 675 -11. 676 -111. Heater 700 +=== Heater === 677 677 678 678 To change the parameters of the heater control algorithm, select the "Control → Heater" section: 679 679 680 -[[image:1733322901923-144.png]] 704 +[[image:1733322901923-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="108" width="800"]] 681 681 682 682 In this section: 683 683 ... ... @@ -698,16 +698,16 @@ 698 698 699 699 * the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before stopping the heater” time. 700 700 701 -If there is the "Heater" signal, the heater contactor closes and/or a signal is output to the corresponding digital output. 725 +(% class="box infomessage" %) 726 +((( 727 +If there is the "Heater" signal, the heater contactor closes and/or a signal is set to the corresponding digital output. 728 +))) 702 702 730 +=== Cooler === 703 703 704 -1. 705 -11. 706 -111. Cooler 707 - 708 708 To change the parameters of the cooler control algorithm, select the "Control → Cooler" section: 709 709 710 -[[image:1733322901924-962.png]] 734 +[[image:1733322901924-962.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]] 711 711 712 712 In this section: 713 713 ... ... @@ -728,18 +728,18 @@ 728 728 729 729 * the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before stopping the cooler” time. 730 730 731 -If there is the "Cooler" signal, the cooler contactor closes and/or a signal is output to the corresponding digital output. 755 +(% class="box infomessage" %) 756 +((( 757 +If there is the "Cooler" signal, the cooler contactor closes and/or a signal is set to the corresponding digital output. 758 +))) 732 732 760 +=== High voltage === 733 733 734 -1. 735 -11. 736 -111. High voltage 737 - 738 738 The BMS Main 3 device has an ability to measure high voltages before and after contactors. 739 739 740 740 To change the parameters of high voltage fault, select the "Control → High voltage" section: 741 741 742 -[[image:1733322914683-203.png]] 766 +[[image:1733322914683-203.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="87" width="800"]] 743 743 744 744 In this section: 745 745 ... ... @@ -749,13 +749,13 @@ 749 749 750 750 The BMS Main 3 implements a self-diagnostics of high-voltage measurement lines. If measurement line breaks or high-voltage polarity is wrong, “High voltage fault” is generated. 751 751 752 -**If there is the “High voltage fault”, the “Critical error” is generated and all contactors open.** 776 +(% class="box warningmessage" %) 777 +((( 778 +If there is the “High voltage fault”, **the “Critical error” is generated.** 779 +))) 753 753 781 +=== Cell analysis === 754 754 755 -1. 756 -11. 757 -111. Cell analysis 758 - 759 759 The battery discharge characteristic – the dependence Uocv = Uocv(DOD) – is used to determine the tabular dependence Uocv = Uocv(SOC, t°C), which is necessary for calculating the battery charge level. 760 760 761 761 The BMS Main 3 device can automatically determine the battery discharge characteristic. ... ... @@ -767,7 +767,7 @@ 767 767 768 768 To configure parameters for determining the discharge characteristic of the battery, select the "Control → Cell analysis" section: 769 769 770 -[[image:1733322914685-558.png]] 794 +[[image:1733322914685-558.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]] 771 771 772 772 In this section: 773 773
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