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Changes for page 3.3 Control

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... ... @@ -202,31 +202,25 @@
202 202  
203 203  To configure parameters for determining the charge current limit, select the "Control → Charge map" section:
204 204  
205 -[[image:1733746766504-864.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
206 -
205 +[[image:1740397188247-315.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="800"]]
207 207  In this section:
208 208  
209 209  * Enable – a flag to start calculation of the charge current limit;
210 -* Maximum charge current – a maximum allowable value of the charge current (under normal conditions):
211 -* 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;
209 +* Maximum charge current – a maximum allowable value of the charge current (under normal conditions), A;
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** Kcs** depending on 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 -
214 -[[image:1733746766506-660.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="196" width="800"]]
215 -
216 -* Option 2: Limit charge current by the contactor temperature – a flag to enable correction of maximum allowable charging current Kcc depending on contactor 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;
217 217  * 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;
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;
218 +* Option 4: Cell temperature x Factor – the dependence of the correction factor on maximum cell temperature.
218 218  
219 -[[image:1733746766508-178.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="184" width="800"]]
220 +Value of the charge current limit at given SOC, temperature, contactors temperature, maximum cell voltage and maximum cell temperature is calculated as follows:
220 220  
221 -* 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;
222 -* Option 3: Cell voltage x Factor – the dependence of the correction factor on maximum cell voltage.
222 +**Charge current limit = Maximum charge current × Kcs × Kcc × Kcv × Kct**
223 223  
224 -[[image:1733746766509-971.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="217" width="800"]]
225 -
226 -Value of the charge current limit at given SOC, temperature, contactors temperature and maximum cell voltage is calculated as follows:
227 -
228 -Charging current limit = Maximum charging current × Kcs × Kcc × Kcv
229 -
230 230  === Discharge map ===
231 231  
232 232  The BMS Mini device calculates maximum allowable discharge current values in respect to SOC, battery temperature, contactor temperature and cell voltage.
... ... @@ -235,31 +235,72 @@
235 235  
236 236  To configure parameters for determining the discharge current limit, select the "Control → Discharge map" section:
237 237  
238 -[[image:1733746766511-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="149" width="800"]]
232 +[[image:1740397304972-174.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="182" width="800"]]
239 239  
240 240  In this section:
241 241  
242 242  * Enable – a flag to start calculation of the discharge current limit;
243 -* Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions):
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;
237 +* Maximum discharge current – a maximum allowable value of the discharge current (under normal conditions), A;
238 +* Rate of change – a rate of change the current limit to a new value (0 is for immediate change), A/s;
239 +* 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;
245 245  * Option 1: SOC x Temperature x Factor – the dependence of the correction factor on SOC and battery temperature;
241 +* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current **Kdc** depending on contactor temperature;
242 +* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
243 +* 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;
244 +* Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage;
245 +* 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;
246 +* Option 4: Cell voltage x Factor – the dependence of the correction factor on minimum cell temperature.
246 246  
247 -[[image:1733746766512-300.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="195" width="800"]]
248 +Value of the discharge current limit at given SOC, temperature, contactors temperature, minimum cell voltage and maximum cell temperature is calculated as follows:
248 248  
249 -* Option 2: Limit discharge current by the contactor temperature – a flag to enable correction of maximum allowable discharging current Kdc depending on contactor temperature;
250 -* Option 2: Contactor temperature x Factor – the dependence of the correction factor on SOC and contactor temperature;
250 +**Discharge current limit = Maximum discharge current × Kds × Kdc × Kdv × Kdt**
251 251  
252 -[[image:1733746766513-161.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="183" width="800"]]
252 +=== Main contactor ===
253 253  
254 -* 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;
255 -* Option 3: Cell voltage x Factor – the dependence of the correction factor on minimum cell voltage.
254 +The BMS Mini 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 a case of sealing of the charging or discharging contactors.
256 256  
257 -[[image:1733746766514-686.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="215" width="800"]]
256 +The Main contactor algorithm supports the following modes:
258 258  
259 -Value of the discharge current limit at given SOC, temperature, contactors temperature and minimum cell voltage is calculated as follows:
258 +* Always on;
259 +* Automatic.
260 260  
261 -Discharging current limit = Maximum discharging current × Kds × Kdc × Kdv
261 +In “Always on” mode main contactor closes if all the following is true:
262 262  
263 +* Other contactors are open;
264 +* There are no errors from the "Errors 1, 2 ..." bitfileds.
265 +
266 +In “Always on” mode main contactor opens if all the following is true:
267 +
268 +* Other contactors are open;
269 +* There is an error from the the "Errors 1, 2 ..." bitfileds.
270 +
271 +In “Automatic” mode, the main contactor closes by internal algorithms at the same time with other contactors.
272 +
273 +In “On demand” mode, the main contactor closes by external the “Close Main contactor” request.
274 +
275 +(% class="box infomessage" %)
276 +(((
277 +**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).
278 +)))
279 +
280 +To change the parameters of the main contactor, select the "Control → Main contactor" section:
281 +
282 +[[image:1740397558976-651.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="144" width="800"]]
283 +
284 +In this section:
285 +
286 +* Enable – a flag to enable the main contactor control;
287 +* Algorithm – main contactor control algorithm:
288 +** Always on – contactor is always closed;
289 +** Automatic – contactor closes by internal charge and discharge algorithms;
290 +** On demand – contactor is closed by an external request;
291 +* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed;
292 +* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s;
293 +* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset;
294 +* Errors 1, 2 to open the main contactor – bitfields to choose the errors which will open the main contactor.
295 +
296 +*
297 +
263 263  === Charge ===
264 264  
265 265  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.
... ... @@ -444,38 +444,8 @@
444 444  * Maximum voltage – maximum battery voltage, V;
445 445  * Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error.
446 446  
447 -=== Main contactor ===
482 +=== ===
448 448  
449 -The BMS Mini 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 a case of sealing of the charging or discharging contactors.
450 -
451 -The main contactor closes if there are no errors from the list below:
452 -
453 -* Overcurrent;
454 -* Undervoltage;
455 -* Overvoltage;
456 -* High temperature (CH);
457 -* High temperature (DCH);
458 -* Unallowable charging;
459 -* Critical error.
460 -
461 -The main contactor opens if the charging and discharging contactors are opened and any of the following conditions is met:
462 -
463 -* charging or discharging current is detected during a set time;
464 -* voltage of any cell is lower than the minimum cell voltage configured in the section "Protections → Undervoltage" during a set time;
465 -* voltage of any cell is greater than the maximum cell voltage configured in the section "Protections → Overvoltage" during a set time;
466 -* temperature of any cell is greater than the maximum cell temperature configured in the section "Protections → High temperature" during a set time;
467 -* Critical error stays on during a set time.
468 -
469 -To change the parameters of the main contactor, select the "Control → Main contactor" section:
470 -
471 -[[image:1733746797002-498.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="93" width="800"]]
472 -
473 -In this section:
474 -
475 -* Enable – a flag to enable the main contactor control;
476 -* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, second;
477 -* Keep the contactor open until the device is restarted – a flag for keeping the main contactor opened until the system be reset.
478 -
479 479  === Cell balancing ===
480 480  
481 481  Balancing makes the voltage of all cells be equal to the minimum cell voltage.
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