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Wiki source code of 3.6 Battery protection

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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 =
3
4 (% data-numbered-headings-start="6" style="--numbered-headings-start: 5;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 == Battery protection ==
6
7 The BMS Main 2.x board continuously monitors the state of the cells, BMS Logic boards, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8
9 === Overcurrent protection ===
10
11 To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
12
13 [[image:1732211959984-118.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="266" width="386"]]
14
15 In this section:
16
17 * Enable – a flag to enable the protection;
18 * Maximum charging current, А;
19 * Tolerant charging current, А;
20 * Maximum discharging current, А;
21 * Tolerant discharging current, А;
22 * Delay before setting the error, second;
23 * Delay before clearing the error, second;
24 * Lock the error until the device is reset – a flag to block the error until the board is restarted.
25
26 As a result of operation of the current protection, the "Overcurrent" error is generated.
27
28 Error generation conditions:
29
30 * the current is positive (charging), and its modulo value is greater than the “Maximum charging current” value for the “Delay before setting the error” time;
31 * the current is negative (discharging), and its modulo value is greater than the “Maximum discharging current” value for the “Delay before setting the error” time.
32
33 Conditions for removing the error:
34
35 * the current is positive (charging) or zero, and its modulo value is less than the “Tolerant charging current” value for the “Delay before clearing the error” time;
36 * the current is negative (discharging), and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
37
38 (% class="box infomessage" %)
39 (((
40 If there is the "Overcurrent" error, the **charging **and **discharging **relay open.
41 )))
42
43 === Undervoltage protection ===
44
45 The board implements battery protection from too low or too high voltage on the cells.
46
47 To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
48
49 [[image:1739960999969-617.png||alt="1739961158202-478.png" data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="351"]]
50
51 In this section:
52
53 * Enable – a flag to enable the protection;
54 * Minimum cell voltage, V;
55 * Tolerant cell voltage, V;
56 * Check the open circuit voltage instead of the actual voltage – a flag to enable U,,ocv,, correction depending on cell current and resistance;
57 * Delay before setting the error, second;
58 * Delay before clearing the error, second;
59 * Lock the error until the device is reset.
60
61 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
62
63 Error generation conditions:
64
65 * the minimum voltage among all cells of the battery is less than the “Minimum cell voltage” value for the “Delay before setting the error” time.
66
67 Conditions for removing the error:
68
69 * the minimum voltage among all cells of the battery is greater than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
70
71 (% class="box infomessage" %)
72 (((
73 If there is the "Undervoltage" error, the **discharging **relay opens.
74 )))
75
76 === Overvoltage protection ===
77
78 To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
79
80 [[image:1739961158202-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="353"]]
81
82 In this section:
83
84 * Enable – a flag to enable the protection;
85 * Maximum cell voltage, V;
86 * Tolerant cell voltage, V;
87 * Check the open circuit voltage instead of the actual voltage – a flag to enable U,,ocv,, correction depending on cell current and resistance;
88 * Delay before setting the error, second;
89 * Delay before clearing the error, second;
90 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
91 * Lock the error until the device is reset.
92
93 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
94
95 Error generation conditions:
96
97 * the maximum voltage among all cells of the battery is greater than the “Maximum cell voltage” value for the “Delay before setting the error” time.
98
99 Conditions for removing the error:
100
101 * the maximum voltage among all cells of the battery is less than the “Tolerant cell voltage” value for the “Delay before clearing the error” time.
102
103 (% class="box infomessage" %)
104 (((
105 If there is the "Overvoltage" error, the **charging **relay and **discharging **relay opens (if the “Switch off the discharging relay on error” flag is set).
106 )))
107
108 === Low temperature protection ===
109
110 The board implements battery protection from too low temperature.
111
112 To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
113
114 [[image:1732213953083-955.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="338"]]
115
116 In this section:
117
118 * Enable – a flag to enable the protection;
119 * Minimum charging temperature, °C;
120 * Tolerant charging temperature, °C;
121 * Minimum discharging temperature, °C;
122 * Tolerant discharging temperature, °C;
123 * Delay before setting the error, second;
124 * Delay before clearing the error, second;
125 * Lock the error until the device is reset.
126
127 As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
128
129 Error generation conditions:
130
131 * the minimum temperature among all cells of the battery is less than the “Minimum charging (discharging) temperature” value for the “Delay before setting the error” time.
132
133 Conditions for removing the error:
134
135 * the minimum temperature among all cells of the battery is greater than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
136
137 (% class="box infomessage" %)
138 (((
139 If there is the "Low CH temperature" error, the **charging **relay opens.
140 If there is the "Low DCH temperature" error, the **discharging **relay opens.
141 )))
142
143 === High temperature protection ===
144
145 The board implements battery protection from too high temperature.
146
147 To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
148
149 [[image:1732213990755-759.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="258" width="370"]]
150
151 In this section:
152
153 * Enable – a flag to enable the protection;
154 * Maximum charging temperature, °C;
155 * Tolerant charging temperature, °C;
156 * Maximum discharging temperature, °C;
157 * Tolerant discharging temperature, °C;
158 * Delay before setting the error, second;
159 * Delay before clearing the error, second;
160 * Lock the error until the device is reset.
161
162 As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
163
164 Error generation conditions:
165
166 * the maximum temperature among all cells of the battery is greater than the “Maximum charging (discharging) temperature” value for the “Delay before setting the error” time.
167
168 Conditions for removing the error:
169
170 * the maximum temperature among all cells of the battery is less than the “Tolerant charging (discharging) temperature” value for the “Delay before clearing the error” time.
171
172 (% class="box infomessage" %)
173 (((
174 If there is the "High CH temperature" error, the **charging **relay opens.
175 If there is the "High DCH temperature" error, the **discharging **relay opens.
176 )))
177
178 === Battery cover protection ===
179
180 To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
181
182 [[image:1732214030014-281.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="334"]]
183
184 In this section:
185
186 * Enable – a flag to enable the protection;
187 * Delay before setting the error, second;
188 * Delay before clearing the error, second;
189 * Lock the error until the device is reset.
190
191 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
192
193 Error generation conditions:
194
195 * there is a signal from the battery cover during the “Delay before setting the error” time.
196
197 Conditions for removing the error:
198
199 * no signal from the battery cover during the “Delay before clearing the error” time.
200
201 (% class="box warningmessage" %)
202 (((
203 If there is the "Battery cover error", the **“Critical error” **is generated and **all relays open.**
204 )))
205
206 === High humidity protection ===
207
208 The board can protect the battery from high humidity and water.
209
210 To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
211
212 [[image:1732214076060-358.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="185" width="321"]]
213
214 In this section:
215
216 * Enable – a flag to enable the protection;
217 * Maximum humidity, RH%;
218 * Tolerant humidity, RH%;
219 * Delay before setting the error, second;
220 * Delay before clearing the error, second;
221 * Lock the error until the device is reset.
222
223 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
224
225 Error generation conditions:
226
227 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
228
229 Conditions for removing the error:
230
231 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
232
233 (% class="box infomessage" %)
234 (((
235 If there is the "High humidity" error, no action is taken. The error is indicative.
236 )))
237
238 === Water protection ===
239
240 To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
241
242 [[image:1732214111990-184.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="199" width="340"]]
243
244 In this section:
245
246 * Enable – a flag to enable the protection;
247 * Maximum (water) humidty, RH%;
248 * Tolerant humidity, RH%;
249 * Delay before setting the error, second;
250 * Delay before clearing the error, second;
251 * Lock the error until the device is reset.
252
253 As a result of the operation of the battery protection from water, the "Water" error is generated.
254
255 Error generation conditions:
256
257 * the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
258
259 Conditions for removing the error:
260
261 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
262
263 (% class="box warningmessage" %)
264 (((
265 If there is the “Water” error,** **the **“Critical error”** is generated and **all relays open.**
266 )))
267
268 === Current sensor error ===
269
270 The board is implemented to check the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
271
272 To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
273
274 [[image:1732214146724-132.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="438" width="365"]]
275
276 In this section:
277
278 * Enable – a flag to enable the protection;
279 * Maximum voltage, V;
280 * Minimum voltage, V;
281 * Hysteresis voltage – a hysteresis value to clear the error, V;
282 * Delay before setting the error, second;
283 * Delay before clearing the error, second;
284 * Lock the error until the device is reset.
285
286 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
287
288 Error generation conditions:
289
290 * the voltage in the signal line or zero level line of the current sensor is greater than the “Maximum voltage” value during the “Delay before setting the error” time;
291 * the voltage in the signal line or zero level line of the current sensor is less than the “Minimum voltage” value during the “Delay before setting the error” time.
292
293 Conditions for removing the error:
294
295 * the voltage in the signal line or zero level line of the current sensor is in range from (Minimum voltage + Hysteresis voltage) to (Maximum voltage - Hysteresis voltage) during the “Delay before clearing the error” time.
296
297 (% class="box warningmessage" %)
298 (((
299 If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
300 )))
301
302 === Short circuit protection ===
303
304 The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
305
306 To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
307
308 [[image:1732214207026-822.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="528" width="371"]]
309
310 In this section:
311
312 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
313 ** Enable – a flag to enable the protection;
314 ** Maximum current, A;
315 ** Delay before setting the error, second;
316 * Delay before clearing the error, second;
317 * Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
318 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
319 * Lock the error until the device is reset.
320
321 If there is a short circuit, the "Short circuit" error is generated.
322
323 Error generation conditions:
324
325 * at any of the three protection levels, the current modulo is greater than the “Maximum current” value during the “Delay before setting the error” time.
326
327 Conditions for removing the error:
328
329 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
330
331 (% class="box infomessage" %)
332 (((
333 If there is the "Short circuit" error, the **charging **relay opens (the “Switch off the charging relay on error” flag is set) and the **discharging **relay opens (the “Switch off the discharging relay on error flag” is set).
334 )))
335
336 === Contactor high temperature protection ===
337
338 The BMS protects power contactors from overheating. To measure the temperature of the contactor, a thermistor is used, connected to the P13 connector of the board. Configuring of the analog input for temperature measurement is described in section Input signals.
339
340 To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
341
342 [[image:1732214237851-405.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="234" width="336"]]
343
344 In this section:
345
346 * Enable – a flag to enable the protection;
347 * Maximum temperature, °C;
348 * Tolerant temperature, °C;
349 * Delay before setting the error, second;
350 * Delay before clearing the error, second;
351 * Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
352 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
353 * Lock the error until the device is reset.
354
355 If there is a contactor overheat, the "Contactor high temperature" error is generated.
356
357 Error generation conditions:
358
359 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
360
361 Conditions for removing the error:
362
363 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
364
365 (% class="box infomessage" %)
366 (((
367 If there is the "Contactor high temperature" error, the **charging **relay opens (the “Switch off the charging relay on error” flag is set) and the **discharging **relay opens (the “Switch off the discharging relay on error flag” is set).
368 )))
369
370 === Unallowable charging protection ===
371
372 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
373
374 To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
375
376 [[image:1732214272022-547.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="312"]]
377
378 In this section:
379
380 * Enable – a flag to enable the protection;
381 * Delay before setting the error, second;
382 * Delay before clearing the error, second;
383 * Lock the error until the device is reset.
384
385 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
386
387 Error generation conditions:
388
389 * the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
390
391 Conditions for removing the error:
392
393 * the battery current is zero during the “Delay before clearing the error” time.
394
395 (% class="box infomessage" %)
396 (((
397 If there is the "Unallowable charging" error, the **discharging **relay opens.
398 )))
399
400 === Stuck contactor protection ===
401
402 The BMS Main 2.x protects contactors against sticking.
403
404 To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
405
406 [[image:1732214367207-318.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="331"]]
407
408 In this section:
409
410 * Enable – a flag to enable the protection;
411 * Delay before setting the error, second;
412 * Delay before clearing the error, second;
413 * Lock the error until the device is reset;
414
415 If there is a stuck contactor, the “Stuck contactor” error is generated.
416
417 Error generation conditions:
418
419 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
420
421 (% class="box warningmessage" %)
422 (((
423 If there is the “Stuck contactor error”, the **“Critical error” **is generated and **all relays open.**
424 )))
425
426 === Contactor feedback check ===
427
428 The BMS Main 2.x can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, one of the discrete input must be set as corresponding contactor feedback signal (see [[Input and output signals>>doc:Battery management systems.BMS Main 2\.1.3\. Configuration.3\.3 Input and output signals.WebHome]]).
429
430 To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
431
432 [[image:1732214400721-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="150" width="323"]]
433
434 In this section:
435
436 * Enable – a flag to enable the protection;
437 * Delay before setting the error, second;
438 * Delay before clearing the error, second;
439 * Lock the error until the device is reset;
440
441 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
442
443 * discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
444
445 (% class="box warningmessage" %)
446 (((
447 If there is the contactor feedback error, the **“Critical error” **is generated and **all relays open.**
448 )))
449
450 === Charging contactor cycles protection ===
451
452 The BMS protects the charging contactor against frequent switching.
453
454 To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
455
456 [[image:1732214432750-543.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="260" width="336"]]
457
458 In this section:
459
460 * Enable – a flag to enable the protection;
461 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
462 * Period – a time in which the BMS counts switchings of the charging contactor, second;
463 * Delay before setting the error, second;
464 * Delay before clearing the error, second;
465 * Lock the error until the device is reset;
466 * Cycles – a number of the charging contactor switchings made during battery operation.
467
468 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
469
470 Error generation conditions:
471
472 * the number of switchings of the charging contactor for the “Period” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
473
474 Conditions for removing the error:
475
476 * the “Delay before clearing the error” time has passed since the error was generated.
477
478 (% class="box infomessage" %)
479 (((
480 If there is the "CH contactor cycles error" error, the **charging **relay opens.
481 )))
482
483 === Discharging contactor cycles protection ===
484
485 The BMS protects the discharging contactor against frequent switching.
486
487 To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
488
489 [[image:1732214468462-541.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="269" width="346"]]
490
491 In this section:
492
493 * Enable – a flag to enable the protection;
494 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
495 * Period – a time in which the BMS counts switchings of the charging contactor, second;
496 * Delay before setting the error, second;
497 * Delay before clearing the error, second;
498 * Lock the error until the device is reset;
499 * Cycles – a number of the charging contactor switchings made during battery operation.
500
501 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
502
503 Error generation conditions:
504
505 * the number of switchings of the discharging contactor for the “Period” time is greater than or equal to the “Cycles threshold” value. The error is generated with the “Delay before setting the error” delay.
506
507 Conditions for removing the error:
508
509 * the “Delay before clearing the error” time has passed since the error was generated.
510
511 (% class="box infomessage" %)
512 (((
513 If there is the "DCH contactor cycles error" error, the **discharging **relay opens.
514 )))
515
516 === Temperature sensor error ===
517
518 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
519
520 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
521
522 [[image:1732214501360-654.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="334"]]
523
524 In this section:
525
526 * Enable – a flag to enable the protection;
527 * Delay before setting the error, second;
528 * Delay before clearing the error, second;
529 * Lock the error until the device is reset.
530
531 If there are no temperature sensors connected to a BMS Logic board or any temperature sensor is shorted, the "No temp. sensors" error and "Temp. sensor is shorted" error are generated respectively. These errors generated and removed with the “Delay before setting the error” and “Delay before clearing the error” delays.
532
533 (% class="box warningmessage" %)
534 (((
535 If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all relays open.**
536 )))
537
538 === Logic high temperature protection ===
539
540 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
541
542 [[image:1732214545352-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="156" width="309"]]
543
544 In this section:
545
546 * Enable – a flag to enable the protection;
547 * Maximum Logic temperature, °C;
548 * Tolerant Logic temperature, °C;
549 * Lock the error until the device is reset.
550
551 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
552
553 Error generation conditions:
554
555 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
556
557 Conditions for removing the error:
558
559 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
560
561 (% class="box infomessage" %)
562 (((
563 Cell balancing is prohibited for overheated boards.
564 )))
565
566 === Logic offline protection ===
567
568 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
569
570 [[image:1732214579147-515.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="204"]]
571
572 In this section:
573
574 * Enable – a flag to enable the protection;
575 * Lock the error until the device is reset.
576
577 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
578
579 Error generation conditions:
580
581 * at least one of the connected BMS Logic boards does not respond to the commands of the BMS Main 2.x board for 10 seconds.
582
583 Conditions for removing the error:
584
585 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
586
587 (% class="box warningmessage" %)
588 (((
589 If there is the "Logic offline" error, the **“Critical error”** is generated and **all relays open.**
590 )))
591
592 === Cell count protection ===
593
594 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
595
596 [[image:1732214641606-453.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="341"]]
597
598 In this section:
599
600 * Enable – a flag to enable the protection;
601 * Cell count – a number of cells connected to the BMS;
602 * Delay before setting the error, second;
603 * Delay before clearing the error, second;
604 * Lock the error until the device is reset.
605
606 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
607
608 Error generation conditions:
609
610 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
611
612 Conditions for removing the error:
613
614 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
615
616 (% class="box warningmessage" %)
617 (((
618 If there is the "Cell count error",** **the **“Critical error”** is generated and **all relays open.**
619 )))
620
621 === Logic count protection ===
622
623 To change the protection parameters from the mismatch of the number of BMS Logic boards to the set value, select the menu "Protections → Logic count protection":
624
625 [[image:1732214675358-202.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="163" width="230"]]
626
627 In this section:
628
629 * Enable – a flag to enable the protection;
630 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
631 * Fast scanning – a flag to scan BMS Logic boards fast (boards with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
632 * Lock the error until the device is reset.
633
634 As a result of the operation of the protection from the mismatch of the number of BMS Logic boards, the "Logic count error" is generated.
635
636 Error generation conditions:
637
638 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
639
640 Conditions for removing the error:
641
642 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
643
644 (% class="box warningmessage" %)
645 (((
646 If there is the "Logic count error", the **“Critical error” **is generated and **all relays open.**
647 )))
648
649 === WDT protection ===
650
651 If the BMS firmware hangs, the watchdog timer resets the board. The BMS can detect that the board was reset and generates the “WDT reset” error.
652
653 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
654
655 [[image:1732214703914-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="323"]]
656
657 In this section:
658
659 * Enable – a flag to enable the protection;
660 * Delay before clearing the error, second;
661 * Lock the error until the device is reset.
662
663 Conditions for removing the error:
664
665 * the “Delay before clearing the error” time has passed from the board startup.
666
667 (% class="box warningmessage" %)
668 (((
669 If there is the "WDT reset" error, the **“Critical error”** is generated and** all relays open.**
670 )))
671
672 === Insulation monitoring ===
673
674 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
675
676 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
677
678 [[image:1732214731490-961.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="315"]]
679
680 In this section:
681
682 * Enable – a flag to enable the protection;
683 * Algorithm:
684 ** Always;
685 ** On charging;
686 ** Except charging;
687 * Delay before setting the error, second;
688 * Delay before clearing the error, second;
689 * Lock the error until the device is reset.
690
691 Error is set if corresponding discrete input is set up and it received logical zero.
692
693 (% class="box warningmessage" %)
694 (((
695 If there is the "Insulation monitoring" error, the **“Critical error”** is generated and** all relays open.**
696 )))
697
698 === Critical error parameters ===
699
700 To change the critical error parameters, select the menu "Protections → Critical error parameters":
701
702 [[image:1732214761141-983.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="158" width="348"]]
703
704 In this section:
705
706 * Enable – a flag to enable the protection;
707 * Delay before setting the error, second;
708 * Delay before clearing the error, second;
709 * Lock the error until the device is reset.
710
711 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
712
713 * “Battery cover error”;
714 * “Water”;
715 * “Logic offline”;
716 * “Cell count error”;
717 * “Logic count error”;
718 * “ADC error”;
719 * “No temp. sensors”;
720 * “Temp. sensor is shorted”;
721 * “Current sensor error”;
722 * "Stuck contactor";
723 * "Contactor feedback";
724 * “Shunt offline”;
725 * “Shunt error”;
726 * “Settings error”;
727 * “WDT reset”
728 * "Insulation monitoring".
729
730 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
731
732 (% class="box warningmessage" %)
733 (((
734 **If there is the “Critical error”, all relays open.**
735 )))
736
737 === General error parameters ===
738
739 To change the general error parameters, select the menu "Protections → General error parameters":
740
741 [[image:1732214987517-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="535" width="349"]]
742
743 In this section:
744
745 * Enable – a flag to enable the protection;
746 * Delay before setting the error, second;
747 * Delay before clearing the error, second;
748 * Lock the error until the device is reset;
749 * Errors – a section to select errors that should trigger General error.
750
751 The general error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
752
753 The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
754
755 (% class="box infomessage" %)
756 (((
757 The "General error" is //indicative //and can be linked to any discrete output of the board.
758 )))
759
760 === Low SOC signal ===
761
762 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
763
764 [[image:1732215174961-645.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="186" width="325"]]
765
766 In this section:
767
768 * Enable – a flag to enable signal generation;
769 * Minimum SOC, %;
770 * Tolerant SOC, %;
771 * Delay before setting the signal, second;
772 * Delay before clearing the signal, second;
773 * Lock the signal until the device is reset.
774
775 Signal generation conditions:
776
777 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
778
779 Conditions for clearing the signal:
780
781 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
782
783 (% class="box infomessage" %)
784 (((
785 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
786 )))
787
788 === High charging current signal ===
789
790 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
791
792 [[image:1732215211714-445.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="181" width="322"]]
793
794 In this section:
795
796 * Enable – a flag to enable signal generation;
797 * Maximum charging current, А;
798 * Tolerant charging current, А;
799 * Delay before setting the signal, second;
800 * Delay before clearing the signal, second;
801 * Lock the signal until the device is reset.
802
803 Signal generation conditions:
804
805 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
806
807 Conditions for clearing the signal:
808
809 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
810
811 (% class="box infomessage" %)
812 (((
813 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
814 )))
815
816 === Heater control ===
817
818 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
819
820 [[image:1732215252650-791.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="233" width="370"]]
821
822 In this section:
823
824 * Enable – a flag to enable heater control;
825 * Minimum cell temperature, °C;
826 * Tolerant cell temperature, °C;
827 * Delay before setting the signal, second;
828 * Delay before clearing the signal, second;
829 * Lock the signal until the device is reset;
830 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
831
832 As a result of operating the heating algorithm, the “Heater” signal is generated.
833
834 Conditions of signal generation:
835
836 * The minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before setting the signal” time.
837
838 Conditions for clearing the signal:
839
840 * the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
841
842 (% class="box infomessage" %)
843 (((
844 If there is the "Heater" signal, the **heater **relay closes and/or a signal is output to the corresponded digital output.
845 )))
846
847 === Heater (AUX) control ===
848
849 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
850
851 [[image:1732215282135-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="361"]]
852
853 In this section:
854
855 * Enable – a flag to enable heater control;
856 * Minimum cell temperature, °C;
857 * Tolerant cell temperature, °C;
858 * Delay before setting the signal, second;
859 * Delay before clearing the signal, second;
860 * Lock the signal until the device is reset;
861 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
862
863 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
864
865 Conditions of signal generation:
866
867 * The minimum temperature among all cells of the battery is less than the “Minimum cell temperature” value during the “Delay before setting the signal” time.
868
869 Conditions for clearing the signal:
870
871 * the minimum temperature among all cells of the battery is greater than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
872
873 (% class="box infomessage" %)
874 (((
875 If there is the "Heater (AUX)" signal, the **auxiliary heater **relay closes and/or a signal is output to the corresponded digital output.
876 )))
877
878 === Cooler control ===
879
880 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
881
882 [[image:1732215313977-499.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="219" width="348"]]
883
884 In this section:
885
886 * Enable – a flag to enable cooler control;
887 * Maximum cell temperature, °C;
888 * Tolerant cell temperature, °C;
889 * Delay before setting the signal, second;
890 * Delay before clearing the signal, second;
891 * Lock the signal until the device is reset;
892 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
893
894 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
895
896 Conditions of signal generation:
897
898 * the maximum temperature among all cells of the battery is greater than the “Maximum cell temperature” value during the “Delay before setting the signal” time.
899
900 Conditions for clearing the signal:
901
902 * the maximum temperature among all cells of the battery is less than the “Tolerant cell temperature” value during the “Delay before clearing the signal” time.
903
904 (% class="box infomessage" %)
905 (((
906 If there is the "Cooler" signal, the **cooler **relay closes and/or a signal is output to the corresponded digital output.
907 )))
908
909 === Fault simulation ===
910
911 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
912
913 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
914
915 [[image:1732215359330-850.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="732" width="204"]]
916
917 To simulate errors, set the necessary flags and click on the "Save" button.