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Changes for page 3.3 Control

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Summary

Details

Page properties
Content
... ... @@ -12,47 +12,35 @@
12 12  
13 13  In this section:
14 14  
15 -* Cell capacity – nominal capacity of cells, Ah;
16 -* Cell resistance – nominal (maximum) internal resistance of the cells, Ohm;
17 -* Relax time (after charging) – a relaxation time after charging, second;
18 -* Relax time (atfer discharging) – a relaxation time after discharging, second;
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.
15 +* **Cell capacity** – nominal capacity of cells, Ah;
16 +* **Cell resistance** – nominal (maximum) internal resistance of the cells, Ohm;
17 +* **Connection of cells:**
18 +** **Serial **– all cells are connected in series in a single string.
19 +** **Parallel-Serial **– cells are grouped in parallel and serial items;
20 +* **Parallel-Serial: Number of Logic devices in a chain**;
21 +* **Parallel-Serial: Number of parallel chains in a block**;
22 +* **Parallel-Serial: Number of serial blocks in a string**;
23 +* **Relax time (after charging)** – a relaxation time after charging, second;
24 +* **Relax time (atfer discharging)** – a relaxation time after discharging, second;
25 +* **Reset SOC** – a command to reset cells state of charge. New cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section;
26 +* **Reset resistance** – a command to reset cells resistance to “Cell resistance” value;
27 +* **Reset capacity** – a command to reset cells capacity to “Cell capacity” value;
28 +* **Method of calculating the battery voltage***:
29 +** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery;
30 +** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS.
23 23  
24 -The values “Capacity” and “Resistance” are used to calculate the SOC of cells and the battery.
32 +The **"Parallel-Serial"** connection works as follows: a bunch of serial connected Logics are grouped into chains. A bunch of parallel connected chains are grouped to blocks. A bunch of serial connected blocks are grouped into string. By configuring the corresponding settings it is possible to create a complex string configuration. Current through each chain will be estimated as a fraction of overall current accordingly to the number of chains in a block.
25 25  
26 -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.
34 +The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery.
27 27  
28 -The “Reset parameters” will reset:
36 +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.
29 29  
30 -* state of charge (new cell SOC values will be calculated based on cell voltage and “Uocv (open-circuit voltage) table”: in the “Control → SOC estimation” section);
31 -* cell resistance to “Cell resistance” value;
32 -* battery capacity to “Cell capacity” value.
38 +The **“Reset SOC”, "Reset resistance" **and **"Reset capacity"** command is used for starting-up and adjustment of the battery.
33 33  
34 -The “Reset parameters” command is used for starting-up and adjustment of the battery.
35 -
36 36  === SOC estimation ===
37 37  
38 -The BMS Main 3 device calculates the state of charge of the battery (SOC) using two algorithms:
42 +The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell, and then the overall battery SOC, by using following algorithms:
39 39  
40 -* by open circuit voltage;
41 -* by voltage and current.
42 -
43 -It is recommended to use the algorithm of calculation of SOC by voltage and current.
44 -
45 -To change the estimation algorithm for calculating the battery SOC, select the "Control → SOC estimation → Algorithm" section:
46 -
47 -
48 -[[image:1735056107942-306.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="141" width="800"]]
49 -
50 -The following estimation algorithms supported:
51 -
52 -* Voltage – by open circuit voltage;
53 -* Current and voltage (simplified) – recommended for LFP cells;
54 -* Current and voltage (enhanced) – recommended for NMC cells.
55 -
56 56  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
57 57  
58 58  The **“Current and voltage (simplified)”** SOC calculation algorithm works as follows:
... ... @@ -62,32 +62,34 @@
62 62  
63 63  The **“Current and voltage (enhanced)” **SOC calculation algorithm differs from the simplified algorithm by online correction of the effective capacity. When using this algorithm, it is necessary to fine tune the tabular dependence Uocv = Uocv (SOC, t °C).
64 64  
65 -To change the algorithm for calculating the Final SOC, select the "Control → SOC estimation → Final SOC" section:
53 +To change the algorithm for calculating the SOC, select the "Control → SOC estimation" section:
66 66  
67 67  [[image:1733322611551-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="148" width="800"]]
68 68  
69 -The following calculation methods are supported (“Final SOC”):
57 +In this section:
70 70  
71 -* Minimal SOC – the battery SOC is assumed to be the minimum SOC among the cells;
72 -* Average SOC – the battery SOC is taken equal to the arithmetic average of the cell SOC;
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.
59 +* **Algorithm:**
60 +** **Voltage **– by open circuit voltage;
61 +** **Current and voltage (simplified)** – recommended for LFP cells;
62 +** **Current and voltage (enhanced)** – recommended for NMC cells:
63 +* **Final SOC** – method of calculating overall SOC of battery:
64 +** **Minimal SOC** – the battery SOC is assumed to be the minimum SOC among the cells;
65 +** **Average SOC** – the battery SOC is taken equal to the arithmetic average of the cell SOC;
66 +** **Min-Max SOC** – the battery SOC is calculated based on the minimum and maximum SOC of the cells (recommended). Final SOC will be a) 100% if __any cell__ has 100% SOC, b) 0% if __any cell__ has 0% SOC;
67 +** **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.
68 +* **Scale the final SOC** – a flag to scale the battery SOC by the following values;
69 +* **SOC corresponding to 0%** – the battery SOC that sets to be 0%;
70 +* **SOC corresponding to 100%** – the battery SOC that sets to be 100%.
71 +* **Uocv (open-circuit voltage) table** – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
72 +* **Linear zone** - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
73 +** **Linear zone: point 1** – starting point of the Uocv linear zone;
74 +** **Linear zone: point 2** – ending point of the Uocv linear zone;
75 +* **Coulomb counting correction (temperature)** – the dependence of battery capacity on temperature;
76 +* **Coulomb counting correction (cycles)** – the dependence of battery capacity on the number of charge-discharge cycles.
75 75  
76 -Other parameters:
77 -
78 -* Scale the final SOC – a flag to scale the battery SOC by the following values;
79 -* SOC corresponding to 0% – the battery SOC that sets to be 0%;
80 -* SOC corresponding to 100% – the battery SOC that sets to be 100%.
81 -* Uocv (open-circuit voltage) table – the dependence of the cell open circuit voltage Uocv on SOC and the cell temperature (selected for specific batteries);
82 -* Linear zone - linear zone of the Uocv = Uocv(SOC, t°C) dependency, inside which the cell voltage changes insignificantly:
83 -** Linear zone: point 1 – starting point of the Uocv linear zone;
84 -** Linear zone: point 2 – ending point of the Uocv linear zone;
85 -* Coulomb counting correction (temperature) – the dependence of battery capacity on temperature;
86 -* Coulomb counting correction (cycles) – the dependence of battery capacity on the number of charge-discharge cycles.
87 -
88 88  === SOC correction ===
89 89  
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"]]).
80 +The BMS Main 3 / BMS Main 2R 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"]]).
91 91  
92 92  To configure parameters for periodically correcting the battery state of charge, select the "Control → SOC correction" section:
93 93  
... ... @@ -95,33 +95,30 @@
95 95  
96 96  In this section:
97 97  
98 -* Enable – a flag to enable the SOC correction;
99 -* Shutdown period – a time the battery is off, day. If the BMS detects on its startup that it was off during the “Shutdown period” time, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t);
100 -* Correction period – a period of correcting the battery SOC, day. If the BMS detects that the last correction was more than the “Correction period” ago, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t) and tunes it gradually during the “SOC change time”.
101 -* SOC change time – a duration of the linear changing the battery SOC to the value calculated by the correction algorithm, minute;
102 -* Ignore the linear zone – a flag to ignore linear SOC zone while correction (recommended to be unset);
103 -* Last correction timestamp – time when last correction was made.
88 +* **Enable **– a flag to enable the SOC correction;
89 +* **Shutdown period** – a time the battery is off, day. If the BMS detects on its startup that it was off during the “Shutdown period” time, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t);
90 +* **Correction period** – a period of correcting the battery SOC, day. If the BMS detects that the last correction was more than the “Correction period” ago, the BMS recalculates the battery state of charge based on the tabular dependency Uocv = Uocv (SOC, t) and tunes it gradually during the “SOC change time”.
91 +* **SOC change time** – a duration of the linear changing the battery SOC to the value calculated by the correction algorithm, minute;
92 +* **Ignore the linear zone** – a flag to ignore linear SOC zone while correction (recommended to be unset);
93 +* **Last correction timestamp** – time when last correction was made.
104 104  
105 105  === SOH estimation ===
106 106  
107 107  The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
108 108  
109 -* By effective capacity;
110 -* By total charge-.
99 +In **"By effective capacity" **mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
111 111  
112 -In "By effective capacity" mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
101 +In** "By total charge–"** mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed data about cell health depending of amount of discharge rate to configure the linear function.
113 113  
114 -In "By total charge-" mode SOH is calculated as a linear function of "Total charge-" counter. While "Total charge-" constantly increases during battery operation, SOH will be linearly decrease at the same time. This mode requires a confirmed cell data to set the expecting SOH at the expecting amount of charge-.
115 -
116 116  To configure parameters for battery state of health calculation, select the "Control → SOH correction" section:
117 117  
118 118  [[image:1765447975228-766.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]In this section:
119 119  
120 -* Algorithm:
121 -** By effective capacity;
122 -** By total charge-;
123 -* Total charge: Charge- –  total amount of charge- for expected SOH;
124 -* Total charge: SOH –  expected SOH value at the total amount of charge-.
107 +* **Algorithm:**
108 +** **By effective capacity;**
109 +** **By total charge–;**
110 +* **Total charge: Charge–** –  total amount of charge– for expected SOH;
111 +* **Total charge: SOH** – expected SOH value at the total amount of charge–.
125 125  
126 126  === Resistance estimation ===
127 127  
... ... @@ -155,16 +155,18 @@
155 155  
156 156  In this section:
157 157  
158 -* Current stabilization time, millisecond;
159 -* Maximum calculation period – maximum time between resistance measurements. If more time has elapsed since the last determination of the stabilized current I,,stable,, than is determined in this field, the resistance calculation is not performed, second;
160 -* Maximum resistance factor – the coefficient of calculation of the maximum acceptable resistance of the cell;
161 -* Minimum SOC – minimum cell SOC value for resistance calculation;
162 -* Maximum SOC – maximum cell SOC value for resistance calculation.
145 +* **Current stabilization time**, millisecond;
146 +* **Maximum calculation period** – maximum time between resistance measurements. If more time has elapsed since the last determination of the stabilized current I,,stable,, than is determined in this field, the resistance calculation is not performed, second;
147 +* **Maximum resistance factor** – the coefficient of calculation of the maximum acceptable resistance of the cell;
148 +* **Minimum SOC** – minimum cell SOC value for resistance calculation;
149 +* **Maximum SOC** – maximum cell SOC value for resistance calculation.
163 163  
164 164  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).
165 165  
166 166  === Low SOC (signal) ===
167 167  
155 +The "Low SOC" is indicative signal that can be assigned to a discrete output or a power switch.
156 +
168 168  To change the parameters of the generation a signal about low battery level, select the "Control → Low SOC (signal)" section:
169 169  
170 170  [[image:1733322624660-513.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="116" width="800"]]
... ... @@ -171,12 +171,12 @@
171 171  
172 172  In this section:
173 173  
174 -* Enable – a flag to enable signal generation;
175 -* Minimum SOC, %;
176 -* Tolerant SOC, %;
177 -* Delay before setting the signal, second;
178 -* Delay before clearing the signal, second;
179 -* Lock – lock the signal until the device is reset.
163 +* **Enable **– a flag to enable signal generation;
164 +* **Minimum SOC**, %;
165 +* **Tolerant SOC**, %;
166 +* **Delay before setting the signal**, second;
167 +* **Delay before clearing the signal**, second;
168 +* **Lock** – lock the signal until the device is reset.
180 180  
181 181  Signal generation conditions:
182 182  
... ... @@ -186,13 +186,10 @@
186 186  
187 187  * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
188 188  
189 -(% class="box infomessage" %)
190 -(((
191 -The "Low SOC signal" is indicative and can be output to a discrete output or a power switch.
192 -)))
193 -
194 194  === High charging current (signal) ===
195 195  
180 +The "High charging current" is indicative signal that can be output to a discrete output or a power switch.
181 +
196 196  To change the parameters of the generation high-current signal, select the "Control → High charging current (signal)" section:
197 197  
198 198  [[image:1733322624661-915.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="800"]]
... ... @@ -199,12 +199,12 @@
199 199  
200 200  In this section:
201 201  
202 -* Enable – a flag to enable signal generation;
203 -* Maximum charging current, А;
204 -* Tolerant charging current, А;
205 -* Delay before setting the signal, second;
206 -* Delay before clearing the signal, second;
207 -* Lock – lock the signal until the device is reset.
188 +* **Enable **– a flag to enable signal generation;
189 +* **Maximum charging current**, А;
190 +* **Tolerant charging current**, А;
191 +* **Delay before setting the signal**, second;
192 +* **Delay before clearing the signal**, second;
193 +* **Lock **– lock the signal until the device is reset.
208 208  
209 209  Signal generation conditions:
210 210  
... ... @@ -214,14 +214,9 @@
214 214  
215 215  * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
216 216  
217 -(% class="box infomessage" %)
218 -(((
219 -The "High charging current" signal is indicative and can be output to a discrete output or a power switch.
220 -)))
221 -
222 222  === Charge map ===
223 223  
224 -The BMS Main 3 device calculates the maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
205 +The BMS Main 3 / BMS Main 2R device calculates the maximum allowable charge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
225 225  
226 226  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.
227 227  
... ... @@ -231,17 +231,17 @@
231 231  
232 232  In this section:
233 233  
234 -* Enable – a flag to start calculation of the charge current limit;
235 -* Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
236 -* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
237 -* 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;
238 -* Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
239 -* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
240 -* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
241 -* 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)
242 -* Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage;
243 -* 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;
244 -* Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
215 +* **Enable **– a flag to start calculation of the charge current limit;
216 +* **Maximum charge current** – a maximum allowable value of the charge current (under normal conditions), A;
217 +* **Rate of change** – a rate of change the current limit to a new value (0 is for immediate change), A/s;
218 +* **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;
219 +* **Option 1: SOC x Temperature x Factor** – the dependence of the correction factor on SOC and battery temperature;
220 +* **Option 2: Limit charge current by the contactor temperature** – a flag to enable correction of maximum allowable charging current **Kcc** depending on contactor temperature;
221 +* **Option 2: Contactor temperature x Factor** – the dependence of the correction factor on SOC and contactor temperature;
222 +* **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)
223 +* **Option 3: Cell voltage x Factor** – the dependence of the correction factor on maximum cell voltage;
224 +* **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;
225 +* **Option 4: Cell temperature x Factor** – the dependence of the correction factor on maximum cell temperature.
245 245  
246 246  Value of the charge current limit at given SOC, temperature, contactors temperature, maximum cell voltage and maximum cell temperature is calculated as follows:
247 247  
... ... @@ -249,7 +249,7 @@
249 249  
250 250  === Discharge map ===
251 251  
252 -The BMS Main 3 device calculates the maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
233 +The BMS Main 3 / BMS Main 2R device calculates the maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
253 253  
254 254  Calculated current values are sent to a charger or an intellectual load over the CAN bus.
255 255  
... ... @@ -259,17 +259,17 @@
259 259  
260 260  In this section:
261 261  
262 -* Enable – a flag to start calculation of the discharge current limit;
263 -* Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
264 -* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
265 -* 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;
266 -* Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
267 -* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
268 -* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
269 -* 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)
270 -* Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
271 -* 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;
272 -* Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
243 +* **Enable **– a flag to start calculation of the discharge current limit;
244 +* **Maximum discharge current** – a maximum allowable value of the discharge current (under normal conditions), A;
245 +* **Rate of change** – a rate of change the current limit to a new value (0 is for immediate change), A/s;
246 +* **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;
247 +* **Option 1: SOC x Temperature x Factor** – the dependence of the correction factor on SOC and battery temperature;
248 +* **Option 2: Limit discharge current by the contactor temperature** – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
249 +* **Option 2: Contactor temperature x Factor** – the dependence of the correction factor on SOC and contactor temperature;
250 +* **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)
251 +* **Option 3: Cell voltage x Factor** – the dependence of the correction factor on minimum cell voltage;
252 +* **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;
253 +* **Option 4: Cell voltage x Factor** – the dependence of the correction factor on minimum cell temperature.
273 273  
274 274  Value of the discharge current limit at given SOC, temperature, contactors temperature, minimum cell voltage and maximum cell temperature is calculated as follows:
275 275  
... ... @@ -277,7 +277,7 @@
277 277  
278 278  === Charge map (PEAK & CONTINUOUS) ===
279 279  
280 -The BMS Main 3 has an alternative algorithm for the maximum allowed charging current based on peak and continuous battery operating modes.
261 +The BMS Main 3 / BMS Main 2R has an alternative algorithm for the maximum allowed charging current based on peak and continuous battery operating modes.
281 281  
282 282  To configure parameters for determining the charge current limit, select the "Control → Charge map (PEAK & CONTINUOUS)" section:
283 283  
... ... @@ -285,26 +285,26 @@
285 285  
286 286  In this section:
287 287  
288 -* Enable – a flag to start calculation of the charge current limit;
289 -* Maximum PEAK charge current – a maximum peak charge current (under normal conditions), A;
290 -* Maximum CONTINUOUS charge current – a maximum continuous charge current (under normal conditions), A;
291 -* PEAK: SOC x Temperature x Factor – the dependence of the correction factor for peak current K,,cp,, on SOC and battery temperature;
292 -* CONTINUOUS: SOC x Temperature x Factor – the dependence of the correction factor for continuous current K,,cc,, on SOC and battery temperature;
293 -* PEAK time – a time for peak current to be allowed, s;
294 -* Sliding time – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
295 -* Waiting time – a time for peak current to be prohibited, s.
269 +* **Enable **– a flag to start calculation of the charge current limit;
270 +* **Maximum PEAK charge current** – a maximum peak charge current (under normal conditions), A;
271 +* **Maximum CONTINUOUS charge current** – a maximum continuous charge current (under normal conditions), A;
272 +* **PEAK: SOC x Temperature x Factor** – the dependence of the correction factor for peak current K,,cp,, on SOC and battery temperature;
273 +* **CONTINUOUS: SOC x Temperature x Factor** – the dependence of the correction factor for continuous current K,,cc,, on SOC and battery temperature;
274 +* **PEAK time** – a time for peak current to be allowed, s;
275 +* **Sliding time** – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
276 +* **Waiting time** – a time for peak current to be prohibited, s.
296 296  
297 297  The maximum charging current value equals to the peak or continuous current according to the following diagram:
298 298  
299 299  [[image:1733322717451-608.png||data-xwiki-image-style-alignment="center"]]
300 300  
301 -I,,peak,, = Maximum PEAK charge current × K,,cp,,
282 +**I,,peak,, = Maximum PEAK charge current × K,,cp,,**
302 302  
303 -I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,
284 +**I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,,**
304 304  
305 305  === Discharge map (PEAK & CONTINUOUS) ===
306 306  
307 -The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
288 +The BMS Main 3 / BMS Main 2R has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes.
308 308  
309 309  To configure parameters for determining the discharge current limit, select the "Control → Discharge map (PEAK & CONTINUOUS)" section:
310 310  
... ... @@ -312,45 +312,42 @@
312 312  
313 313  In this section:
314 314  
315 -* Enable – a flag to start calculation of the discharge current limit;
316 -* Maximum PEAK discharge current – a maximum peak discharge current (under normal conditions), A;
317 -* Maximum CONTINUOUS discharge current – a maximum continuous discharge current (under normal conditions), A;
318 -* PEAK: SOC x Temperature x Factor – the dependence of the correction factor for peak current K,,dp,, on SOC and battery temperature;
319 -* CONTINUOUS: SOC x Temperature x Factor – the dependence of the correction factor for continuous current K,,dc,, on SOC and battery temperature;
320 -* PEAK time – a time for peak current to be allowed, s;
321 -* Sliding time – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
322 -* Waiting time – a time for peak current to be prohibited, s.
296 +* **Enable **– a flag to start calculation of the discharge current limit;
297 +* **Maximum PEAK discharge current** – a maximum peak discharge current (under normal conditions), A;
298 +* **Maximum CONTINUOUS discharge current** – a maximum continuous discharge current (under normal conditions), A;
299 +* **PEAK: SOC x Temperature x Factor** – the dependence of the correction factor for peak current K,,dp,, on SOC and battery temperature;
300 +* **CONTINUOUS: SOC x Temperature x Factor** – the dependence of the correction factor for continuous current K,,dc,, on SOC and battery temperature;
301 +* **PEAK time** – a time for peak current to be allowed, s;
302 +* **Sliding time** – a time of linear change of the maximum charging current from peak to continuous and from continuous to peak value, ms;
303 +* **Waiting time** – a time for peak current to be prohibited, s.
323 323  
324 324  The maximum discharging current value equals to the peak or continuous current according to following diagram:
325 325  
326 326  [[image:1733322753429-968.png||data-xwiki-image-style-alignment="center"]]
327 327  
328 -I,,peak,, = Maximum PEAK discharge current × K,,dp,,
309 +**I,,peak,, = Maximum PEAK discharge current × K,,dp,,**
329 329  
330 -I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,
311 +**I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,,**
331 331  
332 332  === Main contactor ===
333 333  
334 -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.
315 +The BMS Main 3 / BMS Main 2R 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.
335 335  
336 336  The Main contactor algorithm supports the following modes:
337 337  
338 -* Always on;
339 -* Automatic.
319 +In **“Always on”** mode main contactor closes if all the following is true:
340 340  
341 -In “Always on” mode main contactor closes if all the following is true:
342 -
343 343  * Other contactors are open;
344 344  * There are no errors from the "Errors 1, 2 ..." bitfileds.
345 345  
346 -In “Always on” mode main contactor opens if all the following is true:
324 +and opens if all the following is true:
347 347  
348 348  * Other contactors are open;
349 349  * There is an error from the the "Errors 1, 2 ..." bitfileds.
350 350  
351 -In “Automatic” mode, the main contactor closes by internal algorithms at the same time with other contactors.
329 +In **“Automatic”** mode, the main contactor closes by internal algorithms at the same time with other contactors.
352 352  
353 -In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
331 +In **“On demand”** mode, the main contactor closes by external the “Close Main contactor” request.
354 354  
355 355  (% class="box infomessage" %)
356 356  (((
... ... @@ -363,8 +363,8 @@
363 363  
364 364  In this section:
365 365  
366 -* Enable – a flag to enable the main contactor control;
367 -* Algorithm – main contactor control algorithm:
344 +* **Enable **– a flag to enable the main contactor control;
345 +* **Algorithm** – main contactor control algorithm:
368 368  ** Always on – contactor is always closed;
369 369  ** Automatic – contactor closes by internal charge and discharge algorithms;
370 370  ** On demand – contactor is closed by an external request;
... ... @@ -377,7 +377,7 @@
377 377  
378 378  To change the parameters of charging process status, select the "Control → Charging status" section:
379 379  
380 -[[image:1760435790050-496.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="140" width="800"]]
358 +[[image:1771432488941-251.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="800"]]
381 381  
382 382  In this section:
383 383  
... ... @@ -385,6 +385,7 @@
385 385  * Current to clear the "Charging current present" – a current level to clear the "Charging current present" signal, A;
386 386  * 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;
387 387  * 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;
366 +* Use actual voltage to generate the "Ready to charge" signal – a flag to disable voltage correction for "Ready to charge" signal;
388 388  * 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;
389 389  * 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  * 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;
... ... @@ -403,7 +403,7 @@
403 403  
404 404  To change the parameters of discharging process status, select the "Control → Discharging status" section:
405 405  
406 -[[image:1760435802140-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
385 +[[image:1771431570393-551.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="800"]]
407 407  
408 408  In this section:
409 409  
... ... @@ -411,10 +411,12 @@
411 411  * Current to clear the "Discharging current present" – a current level to clear the "Discharging current present" signal, А;
412 412  * 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;
413 413  * 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;
393 +* Use actual voltage to generate the "Ready to discharge" signal – a flag to disable voltage correction for "Ready to discharge" signal;
414 414  * 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;
415 415  * 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;
416 416  * 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;
417 417  * 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;
398 +* Clear the 'Ready to discharge' signal if the 'Low SOC' signal is set;
418 418  * Errors 1, 2 to clear the "Ready to discharge" – bitfields to choose the errors which will clear the "Ready to discharge" signal.
419 419  
420 420  === Precharge ===
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