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Wiki source code of 3.6 Battery protection

Version 20.1 by Admin on 2024/11/21 18:42
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1 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.
2
3 == 3.6.1 Overcurrent protection ==
4
5 To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
6
7 [[Overcurrent protection settings>>image:1732211959984-118.png||data-xwiki-image-style-alignment="center" height="266" width="386"]]
8
9 In this section:
10
11 * Enable – a flag to enable the protection;
12 * Maximum charging current, А;
13 * Tolerant charging current, А;
14 * Maximum discharging current, А;
15 * Tolerant discharging current, А;
16 * Delay before setting the error, second;
17 * Delay before clearing the error, second;
18 * Lock the error until the device is reset – a flag to block the error until the board is restarted.
19
20 As a result of operation of the current protection, the "Overcurrent" error is generated.
21
22 Error generation conditions:
23
24 * 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;
25 * 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.
26
27 Conditions for removing the error:
28
29 * 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;
30 * 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.
31
32 (% class="box infomessage" %)
33 (((
34 If there is the "Overcurrent" error, the charging and discharging relay open.
35 )))
36
37 == 3.6.2 Undervoltage protection ==
38
39 The board implements battery protection from too low or too high voltage on the cells.
40
41 To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
42
43 [[Undervoltage protection settings>>image:1732212212350-294.png||data-xwiki-image-style-alignment="center" height="207" width="359"]]
44
45 In this section:
46
47 * Enable – a flag to enable the protection;
48 * Minimum cell voltage, V;
49 * Tolerant cell voltage, V;
50 * Delay before setting the error, second;
51 * Delay before clearing the error, second;
52 * Lock the error until the device is reset.
53
54 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
55
56 Error generation conditions:
57
58 * 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.
59
60 Conditions for removing the error:
61
62 * 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.
63
64 (% class="box infomessage" %)
65 (((
66 If there is the "Undervoltage" error, the discharging relay opens.
67 )))
68
69 3.6.3 Overvoltage protection
70
71 To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
72
73 [[Overvoltage protection settings>>image:1732212357972-295.png||data-xwiki-image-style-alignment="center" height="218" width="338"]]
74
75 In this section:
76
77 * Enable – a flag to enable the protection;
78 * Maximum cell voltage, V;
79 * Tolerant cell voltage, V;
80 * Delay before setting the error, second;
81 * Delay before clearing the error, second;
82 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
83 * Lock the error until the device is reset.
84
85 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
86
87 Error generation conditions:
88
89 * 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.
90
91 Conditions for removing the error:
92
93 * 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.
94
95 (% class="box infomessage" %)
96 (((
97 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).
98 )))
99
100 == 3.6.4 Low temperature protection ==
101
102 The board implements battery protection from too low temperature.
103
104 To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
105
106 [[Low temperature protection settings>>image:1732213953083-955.png||data-xwiki-image-style-alignment="center" height="237" width="338"]]
107
108 In this section:
109
110 * Enable – a flag to enable the protection;
111 * Minimum charging temperature, °C;
112 * Tolerant charging temperature, °C;
113 * Minimum discharging temperature, °C;
114 * Tolerant discharging temperature, °C;
115 * Delay before setting the error, second;
116 * Delay before clearing the error, second;
117 * Lock the error until the device is reset.
118
119 As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
120
121 Error generation conditions:
122
123 * 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.
124
125 Conditions for removing the error:
126
127 * 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.
128
129 (% class="box infomessage" %)
130 (((
131 If there is the "Low CH temperature" error, the charging relay opens.
132 If there is the "Low DCH temperature" error, the discharging relay opens.
133 )))
134
135 == 3.6.5 High temperature protection ==
136
137 The board implements battery protection from too high temperature.
138
139 To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
140
141 [[High temperature protection settings>>image:1732213990755-759.png||data-xwiki-image-style-alignment="center" height="258" width="370"]]
142
143 In this section:
144
145 * Enable – a flag to enable the protection;
146 * Maximum charging temperature, °C;
147 * Tolerant charging temperature, °C;
148 * Maximum discharging temperature, °C;
149 * Tolerant discharging temperature, °C;
150 * Delay before setting the error, second;
151 * Delay before clearing the error, second;
152 * Lock the error until the device is reset.
153
154 As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
155
156 Error generation conditions:
157
158 * 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.
159
160 Conditions for removing the error:
161
162 * 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.
163
164 (% class="box infomessage" %)
165 (((
166 If there is the "High CH temperature" error, the charging relay opens.
167 If there is the "High DCH temperature" error, the discharging relay opens.
168 )))
169
170 == 3.6.6 Battery cover protection ==
171
172 To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
173
174 [[Battery cover protection settings>>image:1732214030014-281.png||data-xwiki-image-style-alignment="center" height="155" width="334"]]
175
176 In this section:
177
178 * Enable – a flag to enable the protection;
179 * Delay before setting the error, second;
180 * Delay before clearing the error, second;
181 * Lock the error until the device is reset.
182
183 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
184
185 Error generation conditions:
186
187 * there is a signal from the battery cover during the “Delay before setting the error” time.
188
189 Conditions for removing the error:
190
191 * no signal from the battery cover during the “Delay before clearing the error” time.
192
193 (% class="box warningmessage" %)
194 (((
195 **If there is the "Battery cover error", the “Critical error” is generated and all relays open.**
196 )))
197
198 == 3.6.7 High humidity protection ==
199
200 The board can protect the battery from high humidity and water.
201
202 To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
203
204 [[High humidity protection settings>>image:1732214076060-358.png||data-xwiki-image-style-alignment="center" height="185" width="321"]]
205
206 In this section:
207
208 * Enable – a flag to enable the protection;
209 * Maximum humidity, RH%;
210 * Tolerant humidity, RH%;
211 * Delay before setting the error, second;
212 * Delay before clearing the error, second;
213 * Lock the error until the device is reset.
214
215 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
216
217 Error generation conditions:
218
219 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
220
221 Conditions for removing the error:
222
223 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
224
225 (% class="box infomessage" %)
226 (((
227 If there is the "High humidity" error, no action is taken. The error is indicative.
228 )))
229
230 == 3.6.8  Water protection ==
231
232 To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
233
234 [[Water protection settings>>image:1732214111990-184.png||data-xwiki-image-style-alignment="center" height="199" width="340"]]
235
236 In this section:
237
238 * Enable – a flag to enable the protection;
239 * Maximum (water) humidty, RH%;
240 * Tolerant humidity, RH%;
241 * Delay before setting the error, second;
242 * Delay before clearing the error, second;
243 * Lock the error until the device is reset.
244
245 As a result of the operation of the battery protection from water, the "Water" error is generated.
246
247 Error generation conditions:
248
249 * the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
250
251 Conditions for removing the error:
252
253 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
254
255 (% class="box warningmessage" %)
256 (((
257 **If there is the “Water” error, the “Critical error” is generated and all relays open.**
258 )))
259
260 == 3.6.9 Current sensor error ==
261
262 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.
263
264 To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
265
266 [[Current sensor error settings>>image:1732214146724-132.png||data-xwiki-image-style-alignment="center" height="438" width="365"]]
267
268 In this section:
269
270 * Enable – a flag to enable the protection;
271 * Maximum voltage, V;
272 * Minimum voltage, V;
273 * Hysteresis voltage – a hysteresis value to clear the error, V;
274 * Delay before setting the error, second;
275 * Delay before clearing the error, second;
276 * Lock the error until the device is reset.
277
278 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
279
280 Error generation conditions:
281
282 * 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;
283 * 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.
284
285 Conditions for removing the error:
286
287 * 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.
288
289 (% class="box warningmessage" %)
290 (((
291 **If there is the “Current sensor error”, the “Critical error” is generated and all relays open.**
292 )))
293
294 == 3.6.10 Short circuit protection ==
295
296 The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
297
298 To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
299
300 [[Short circuit protection settings>>image:1732214207026-822.png||data-xwiki-image-style-alignment="center" height="528" width="371"]]
301
302 In this section:
303
304 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
305 ** Enable – a flag to enable the protection;
306 ** Maximum current, A;
307 ** Delay before setting the error, second;
308 * Delay before clearing the error, second;
309 * Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
310 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
311 * Lock the error until the device is reset.
312
313 If there is a short circuit, the "Short circuit" error is generated.
314
315 Error generation conditions:
316
317 * 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.
318
319 Conditions for removing the error:
320
321 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
322
323 (% class="box infomessage" %)
324 (((
325 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).
326 )))
327
328 == 3.6.11 Contactor high temperature protection ==
329
330 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.
331
332 To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
333
334 [[Contactor high temperature protection settings>>image:1732214237851-405.png||data-xwiki-image-style-alignment="center" height="234" width="336"]]
335
336 In this section:
337
338 * Enable – a flag to enable the protection;
339 * Maximum temperature, °C;
340 * Tolerant temperature, °C;
341 * Delay before setting the error, second;
342 * Delay before clearing the error, second;
343 * Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
344 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
345 * Lock the error until the device is reset.
346
347 If there is a contactor overheat, the "Contactor high temperature" error is generated.
348
349 Error generation conditions:
350
351 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
352
353 Conditions for removing the error:
354
355 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
356
357 (% class="box infomessage" %)
358 (((
359 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).
360 )))
361
362 == 3.6.12 Unallowable charging protection ==
363
364 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
365
366 To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
367
368 [[Unallowable charging protection settings>>image:1732214272022-547.png||data-xwiki-image-style-alignment="center" height="145" width="312"]]
369
370 In this section:
371
372 * Enable – a flag to enable the protection;
373 * Delay before setting the error, second;
374 * Delay before clearing the error, second;
375 * Lock the error until the device is reset.
376
377 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
378
379 Error generation conditions:
380
381 * the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
382
383 Conditions for removing the error:
384
385 * the battery current is zero during the “Delay before clearing the error” time.
386
387 (% class="box infomessage" %)
388 (((
389 If there is the "Unallowable charging" error, the discharging relay opens.
390 )))
391
392 == 3.6.13 Stuck contactor protection ==
393
394 The BMS Main 2.x protects contactors against sticking.
395
396 To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
397
398 [[Stuck contactor protection settings>>image:1732214367207-318.png||data-xwiki-image-style-alignment="center" height="152" width="331"]]
399
400 In this section:
401
402 * Enable – a flag to enable the protection;
403 * Delay before setting the error, second;
404 * Delay before clearing the error, second;
405 * Lock the error until the device is reset;
406
407 If there is a stuck contactor, the “Stuck contactor” error is generated.
408
409 Error generation conditions:
410
411 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
412
413 == 3.6.14 Contactor feedback check ==
414
415 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 section Input and output signals).
416
417 To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
418
419 [[Contactor feedback check settings>>image:1732214400721-274.png||data-xwiki-image-style-alignment="center" height="150" width="323"]]
420
421 In this section:
422
423 * Enable – a flag to enable the protection;
424 * Delay before setting the error, second;
425 * Delay before clearing the error, second;
426 * Lock the error until the device is reset;
427
428 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
429
430 * discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
431
432 == 3.6.15 Charging contactor cycles protection ==
433
434 The BMS protects the charging contactor against frequent switching.
435
436 To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
437
438 [[Charging contactor cycles protection settings>>image:1732214432750-543.png||data-xwiki-image-style-alignment="center" height="260" width="336"]]
439
440 In this section:
441
442 * Enable – a flag to enable the protection;
443 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
444 * Period – a time in which the BMS counts switchings of the charging contactor, second;
445 * Delay before setting the error, second;
446 * Delay before clearing the error, second;
447 * Lock the error until the device is reset;
448 * Cycles – a number of the charging contactor switchings made during battery operation.
449
450 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
451
452 Error generation conditions:
453
454 * 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.
455
456 Conditions for removing the error:
457
458 * the “Delay before clearing the error” time has passed since the error was generated.
459
460 (% class="box infomessage" %)
461 (((
462 If there is the "CH contactor cycles error" error, the charging relay opens.
463 )))
464
465 == 3.6.16 Discharging contactor cycles protection ==
466
467 The BMS protects the discharging contactor against frequent switching.
468
469 To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
470
471 [[Discharging contactor cycles protection settings>>image:1732214468462-541.png||data-xwiki-image-style-alignment="center" height="269" width="346"]]
472
473 In this section:
474
475 * Enable – a flag to enable the protection;
476 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
477 * Period – a time in which the BMS counts switchings of the charging contactor, second;
478 * Delay before setting the error, second;
479 * Delay before clearing the error, second;
480 * Lock the error until the device is reset;
481 * Cycles – a number of the charging contactor switchings made during battery operation.
482
483 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
484
485 Error generation conditions:
486
487 * 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.
488
489 Conditions for removing the error:
490
491 * the “Delay before clearing the error” time has passed since the error was generated.
492
493 (% class="box infomessage" %)
494 (((
495 If there is the "DCH contactor cycles error" error, the discharging relay opens.
496 )))
497
498 == 3.6.17 Temperature sensor error ==
499
500 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
501
502 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
503
504 [[Caption>>image:1732214501360-654.png||data-xwiki-image-style-alignment="center" height="154" width="334"]]
505
506 In this section:
507
508 * Enable – a flag to enable the protection;
509 * Delay before setting the error, second;
510 * Delay before clearing the error, second;
511 * Lock the error until the device is reset.
512
513 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.
514
515 (% class="box warningmessage" %)
516 (((
517 **If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.**
518 )))
519
520 == 3.6.18 Logic high temperature protection ==
521
522 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
523
524
525 In this section:
526
527 * Enable – a flag to enable the protection;
528 * Maximum Logic temperature, °C;
529 * Tolerant Logic temperature, °C;
530 * Lock the error until the device is reset.
531
532 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
533
534 Error generation conditions:
535
536 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
537
538 Conditions for removing the error:
539
540 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
541
542 (% class="box infomessage" %)
543 (((
544 **Cell balancing is prohibited for overheated boards.**
545 )))
546
547 == 3.6.19 Logic offline protection ==
548
549 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
550
551
552 In this section:
553
554 * Enable – a flag to enable the protection;
555 * Lock the error until the device is reset.
556
557 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
558
559 Error generation conditions:
560
561 * 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.
562
563 Conditions for removing the error:
564
565 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
566
567 (% class="box warningmessage" %)
568 (((
569 **If there is the "Logic offline" error, the “Critical error” is generated and all relays open.**
570 )))
571
572 == 3.6.20 Cell count protection ==
573
574 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
575
576
577 In this section:
578
579 * Enable – a flag to enable the protection;
580 * Cell count – a number of cells connected to the BMS;
581 * Delay before setting the error, second;
582 * Delay before clearing the error, second;
583 * Lock the error until the device is reset.
584
585 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
586
587 Error generation conditions:
588
589 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
590
591 Conditions for removing the error:
592
593 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
594
595 (% class="box warningmessage" %)
596 (((
597 **If there is the "Cell count error", the “Critical error” is generated and all relays open.**
598 )))
599
600 == 3.6.21 Logic count protection ==
601
602 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":
603
604
605 In this section:
606
607 * Enable – a flag to enable the protection;
608 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
609 * Fast scan – 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);
610 * Lock the error until the device is reset.
611
612 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.
613
614 Error generation conditions:
615
616 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
617
618 Conditions for removing the error:
619
620 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
621
622 (% class="box warningmessage" %)
623 (((
624 **If there is the "Logic count error", the “Critical error” is generated and all relays open.**
625 )))
626
627 == 3.6.22 WDT protection ==
628
629 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.
630
631 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
632
633
634 In this section:
635
636 * Enable – a flag to enable the protection;
637 * Delay before clearing the error, second;
638 * Lock the error until the device is reset.
639
640 Conditions for removing the error:
641
642 * the “Delay before clearing the error” time has passed from the board startup.
643
644 (% class="box warningmessage" %)
645 (((
646 **If there is the "WDT reset" error, the “Critical error” is generated and all relays open.**
647 )))
648
649 == 3.6.23 Insulation monitoring ==
650
651 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
652
653 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
654
655
656 In this section:
657
658 * Enable – a flag to enable the protection;
659 * Delay before setting the error, second;
660 * Delay before clearing the error, second;
661 * Lock the error until the device is reset.
662
663 Error is set if corresponding discrete input is set up and it received logical zero.
664
665 == 3.6.24 Critical error parameters ==
666
667 To change the critical error parameters, select the menu "Protections → Critical error parameters":
668
669
670 In this section:
671
672 * Enable – a flag to enable the protection;
673 * Delay before setting the error, second;
674 * Delay before clearing the error, second;
675 * Lock the error until the device is reset.
676
677 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
678
679 * “Battery cover error”;
680 * “Water”;
681 * “Logic offline”;
682 * “Cell count error”;
683 * “Logic count error”;
684 * “ADC error”;
685 * “No temp. sensors”;
686 * “Temp. sensor is shorted”;
687 * “Current sensor error”;
688 * “Shunt offline”;
689 * “Shunt error”;
690 * “Settings error”;
691 * “WDT reset”.
692
693 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
694
695 (% class="box warningmessage" %)
696 (((
697 **If there is the “Critical error”, all relays open.**
698 )))
699
700 == 3.6.25 General error parameters ==
701
702 == 3.6.26 Low SOC signal ==
703
704 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
705
706
707 In this section:
708
709 * Enable – a flag to enable signal generation;
710 * Minimum SOC, %;
711 * Tolerant SOC, %;
712 * Delay before setting the signal, second;
713 * Delay before clearing the signal, second;
714 * Lock the signal until the device is reset.
715
716 Signal generation conditions:
717
718 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
719
720 Conditions for clearing the signal:
721
722 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
723
724 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
725
726 == 3.6.27 High charging current signal ==
727
728 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
729
730
731 In this section:
732
733 * Enable – a flag to enable signal generation;
734 * Maximum charging current, А;
735 * Tolerant charging current, А;
736 * Delay before setting the signal, second;
737 * Delay before clearing the signal, second;
738 * Lock the signal until the device is reset.
739
740 Signal generation conditions:
741
742 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
743
744 Conditions for clearing the signal:
745
746 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
747
748 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
749
750 == 3.6.28 Heater control ==
751
752 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
753
754
755 In this section:
756
757 * Enable – a flag to enable heater control;
758 * Minimum cell temperature, °C;
759 * Tolerant cell temperature, °C;
760 * Delay before setting the signal, second;
761 * Delay before clearing the signal, second;
762 * Lock the signal until the device is reset;
763 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
764
765 As a result of operating the heating algorithm, the “Heater” signal is generated.
766
767 Conditions of signal generation:
768
769 * 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.
770
771 Conditions for clearing the signal:
772
773 * 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.
774
775 (% class="box infomessage" %)
776 (((
777 If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
778 )))
779
780 == 3.6.29 Heater (AUX) control ==
781
782 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
783
784
785 In this section:
786
787 * Enable – a flag to enable heater control;
788 * Minimum cell temperature, °C;
789 * Tolerant cell temperature, °C;
790 * Delay before setting the signal, second;
791 * Delay before clearing the signal, second;
792 * Lock the signal until the device is reset;
793 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
794
795 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
796
797 Conditions of signal generation:
798
799 * 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.
800
801 Conditions for clearing the signal:
802
803 * 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.
804
805 (% class="box infomessage" %)
806 (((
807 If there is the "Heater (AUX)" signal, the auxiliary heater relay closes and/or a signal is output to the corresponded digital output.
808 )))
809
810 == 3.6.30 Cooler control ==
811
812 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
813
814
815 In this section:
816
817 * Enable – a flag to enable cooler control;
818 * Maximum cell temperature, °C;
819 * Tolerant cell temperature, °C;
820 * Delay before setting the signal, second;
821 * Delay before clearing the signal, second;
822 * Lock the signal until the device is reset;
823 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
824
825 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
826
827 Conditions of signal generation:
828
829 * 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.
830
831 Conditions for clearing the signal:
832
833 * 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.
834
835 (% class="box infomessage" %)
836 (((
837 If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
838 )))
839
840 == 3.6.31 Fault simulation ==
841
842 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
843
844 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
845
846
847 In this section:
848
849 * Overcurrent;
850 * Undervoltage;
851 * Overvoltage;
852 * Low CH temperature;
853 * Low DCH temperature;
854 * High CH temperature;
855 * High DCH temperature;
856 * Battery cover error;
857 * High humidity;
858 * Water;
859 * Current sensor error;
860 * Short circuit;
861 * Contactor high temperature;
862 * Unallowable charging;
863 * Stuck contactor;
864 * CH contactor feedback error;
865 * DCH contactor feedback error;
866 * PCH contactor feedback error;
867 * CH/DCH contactor feedback error;
868 * Main contactor feedback error;
869 * CH contactor cycles error;
870 * DCH contactor cycles error;
871 * Logic high temperature;
872 * Logic offline;
873 * Cell count error;
874 * Logic count error;
875 * Insulation error;
876 * Critical error;
877 * Low SOC;
878 * High charging current;
879 * Heater;
880 * Cooler.
881
882 To simulate errors, set the necessary flags and click on the "Save" button.