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Changes for page 3.3 Control

Last modified by Admin on 2025/12/11 10:32
From version 44.1
edited by Admin
on 2025/04/09 12:06
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To version 66.3
edited by Admin
on 2025/12/11 10:02
Change comment: There is no comment for this version

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... ... @@ -102,6 +102,17 @@
102 102  * Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
103 103  * Last correction timestamp – time when last correction was made.
104 104  
105 +=== SOH estimation ===
106 +
107 +The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
108 +
109 +* by effective capacity;
110 +* by total charge-.
111 +
112 +In "By effective capacity" mode SOH is calculated as a ratio of effective capacity to nominal capacity.
113 +
114 +In "By total charge-" mode SOH is calculated
115 +
105 105  === Resistance estimation ===
106 106  
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
... ... @@ -213,7 +213,7 @@
213 213  * Enable – a flag to start calculation of the charge current limit;
214 214  * Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
215 215  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
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 SOC and battery temperature;
227 +* 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;
217 217  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
218 218  * Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
219 219  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
... ... @@ -241,7 +241,7 @@
241 241  * Enable – a flag to start calculation of the discharge current limit;
242 242  * Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
243 243  * Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
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 SOC and temperature;
255 +* 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;
245 245  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
246 246  * Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
247 247  * Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
... ... @@ -356,13 +356,19 @@
356 356  
357 357  To change the parameters of charging process status, select the "Control → Charging status" section:
358 358  
359 -[[image:1735064935499-941.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]In this section:
370 +[[image:1760435790050-496.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="140" width="800"]]
360 360  
372 +In this section:
373 +
361 361  * Current to set the "Charging current present" – a current level to generate the "Charging current present" signal, A;
362 362  * 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 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 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;
376 +* 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;
377 +* 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;
378 +* Treat negative currents as zero currents for generating the "Ready to charge" signal – a flag to disable voltage correction for "Ready to charge" signal at discharging current;
365 365  * 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;
380 +* Check the 'Charge current limit' value to generate the 'Ready to charge' – a flag to enable check of "Charging current limit" to generate the "Ready to charge" signal;
381 +* Charge current limit to clear the 'Ready to charge' – a threshold charging current limit value, A; if the limit is //above //this level, the “Ready to charge” signal is cleared;
382 +* Charge current limit to set the 'Ready to charge' – a tolerant charging current limit value, A; if the limit is //below //this level, the “Ready to charge” signal is set;
366 366  * Errors 1, 2 to clear the "Ready to charge" – bitfields to choose the errors which will clear the "Ready to charge" signal.
367 367  
368 368  (% class="box infomessage" %)
... ... @@ -376,12 +376,18 @@
376 376  
377 377  To change the parameters of discharging process status, select the "Control → Discharging status" section:
378 378  
379 -[[image:1735064980481-209.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]In this section:
396 +[[image:1760435802140-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
380 380  
398 +In this section:
399 +
381 381  * Current to set the "Discharging current present" – a current level to generate the "Discharging current present" signal, А;
382 382  * 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 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 voltage level on the cell, V; if all cells voltages are above the tolerant level, the “Ready to discharge” signal is set;
402 +* 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;
403 +* 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;
404 +* Treat positive currents as zero currents for generating the "Ready to discharge" signal – a flag to disable voltage correction for "Ready to discharge" signal at charging current;
405 +* Check the 'Discharge current limit' value to generate the 'Ready to discharge' – a flag to enable check of "Discharging current limit" to generate the "Ready to discharge" signal;
406 +* Discharge current limit to clear the 'Ready to discharge' – a threshold discharging current limit value, A; if the limit is //above //this level, the “Ready to discharge” signal is cleared;
407 +* Discharge current limit to set the 'Ready to discharge' – a tolerant discharging current limit value, A; if the limit is //below //this level, the “Ready to discharge” signal is set;
385 385  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
386 386  
387 387  === Precharge ===
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394 394  
395 395  To change the parameters of precharge contactor, select the "Control → Precharge" section:
396 396  
397 -[[image:1735065073836-743.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="160" width="800"]]
420 +[[image:1750328428183-819.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="800"]]
398 398  
399 399  * Precharge current threshold to finish precharging – a minimum current value at which precharging process assumed to be finished, A;
400 400  * 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;
401 401  * Minimum voltage difference to finish precharging – minimal voltage difference before and after contactors at which precharge process is meant to be finished, V;
425 +* Keep the precharging relay closed until precharge is finished – a flag to ignore the Precharge time and wait precharging to finish before open precharge relay;
402 402  * Number of precharging attempts – maximum number of precharging attempts before setting the "Precharge error";
427 +* Delay before current measurement – a delay before first current measurement after closing precharge, millisecond;
403 403  * Precharge time – a duration of closing the precharge contactor before closing the discharging contactor, millisecond;
404 404  * Relaxation between attempts – a duration between precharge attempts, millisecond;
405 405  * Check the power dissipated in the preacharge resistor - a flag to enable the calculation of power dissipated in precharge resistor;
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