Skip to Content

Wiki source code of 3.6 Battery protection

Version 18.1 by Admin on 2024/11/21 18:41
Show last authors
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 [[image:1732214432750-543.png]]
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
472 In this section:
473
474 * Enable – a flag to enable the protection;
475 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
476 * Period – a time in which the BMS counts switchings of the charging contactor, second;
477 * Delay before setting the error, second;
478 * Delay before clearing the error, second;
479 * Lock the error until the device is reset;
480 * Cycles – a number of the charging contactor switchings made during battery operation.
481
482 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
483
484 Error generation conditions:
485
486 * 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.
487
488 Conditions for removing the error:
489
490 * the “Delay before clearing the error” time has passed since the error was generated.
491
492 (% class="box infomessage" %)
493 (((
494 If there is the "DCH contactor cycles error" error, the discharging relay opens.
495 )))
496
497 == 3.6.17 Temperature sensor error ==
498
499 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
500
501 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
502
503
504 In this section:
505
506 * Enable – a flag to enable the protection;
507 * Delay before setting the error, second;
508 * Delay before clearing the error, second;
509 * Lock the error until the device is reset.
510
511 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.
512
513 (% class="box warningmessage" %)
514 (((
515 **If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.**
516 )))
517
518 == 3.6.18 Logic high temperature protection ==
519
520 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
521
522
523 In this section:
524
525 * Enable – a flag to enable the protection;
526 * Maximum Logic temperature, °C;
527 * Tolerant Logic temperature, °C;
528 * Lock the error until the device is reset.
529
530 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
531
532 Error generation conditions:
533
534 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
535
536 Conditions for removing the error:
537
538 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
539
540 (% class="box infomessage" %)
541 (((
542 **Cell balancing is prohibited for overheated boards.**
543 )))
544
545 == 3.6.19 Logic offline protection ==
546
547 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
548
549
550 In this section:
551
552 * Enable – a flag to enable the protection;
553 * Lock the error until the device is reset.
554
555 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
556
557 Error generation conditions:
558
559 * 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.
560
561 Conditions for removing the error:
562
563 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
564
565 (% class="box warningmessage" %)
566 (((
567 **If there is the "Logic offline" error, the “Critical error” is generated and all relays open.**
568 )))
569
570 == 3.6.20 Cell count protection ==
571
572 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
573
574
575 In this section:
576
577 * Enable – a flag to enable the protection;
578 * Cell count – a number of cells connected to the BMS;
579 * Delay before setting the error, second;
580 * Delay before clearing the error, second;
581 * Lock the error until the device is reset.
582
583 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
584
585 Error generation conditions:
586
587 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
588
589 Conditions for removing the error:
590
591 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
592
593 (% class="box warningmessage" %)
594 (((
595 **If there is the "Cell count error", the “Critical error” is generated and all relays open.**
596 )))
597
598 == 3.6.21 Logic count protection ==
599
600 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":
601
602
603 In this section:
604
605 * Enable – a flag to enable the protection;
606 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
607 * 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);
608 * Lock the error until the device is reset.
609
610 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.
611
612 Error generation conditions:
613
614 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
615
616 Conditions for removing the error:
617
618 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
619
620 (% class="box warningmessage" %)
621 (((
622 **If there is the "Logic count error", the “Critical error” is generated and all relays open.**
623 )))
624
625 == 3.6.22 WDT protection ==
626
627 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.
628
629 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
630
631
632 In this section:
633
634 * Enable – a flag to enable the protection;
635 * Delay before clearing the error, second;
636 * Lock the error until the device is reset.
637
638 Conditions for removing the error:
639
640 * the “Delay before clearing the error” time has passed from the board startup.
641
642 (% class="box warningmessage" %)
643 (((
644 **If there is the "WDT reset" error, the “Critical error” is generated and all relays open.**
645 )))
646
647 == 3.6.23 Insulation monitoring ==
648
649 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
650
651 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
652
653
654 In this section:
655
656 * Enable – a flag to enable the protection;
657 * Delay before setting the error, second;
658 * Delay before clearing the error, second;
659 * Lock the error until the device is reset.
660
661 Error is set if corresponding discrete input is set up and it received logical zero.
662
663 == 3.6.24 Critical error parameters ==
664
665 To change the critical error parameters, select the menu "Protections → Critical error parameters":
666
667
668 In this section:
669
670 * Enable – a flag to enable the protection;
671 * Delay before setting the error, second;
672 * Delay before clearing the error, second;
673 * Lock the error until the device is reset.
674
675 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
676
677 * “Battery cover error”;
678 * “Water”;
679 * “Logic offline”;
680 * “Cell count error”;
681 * “Logic count error”;
682 * “ADC error”;
683 * “No temp. sensors”;
684 * “Temp. sensor is shorted”;
685 * “Current sensor error”;
686 * “Shunt offline”;
687 * “Shunt error”;
688 * “Settings error”;
689 * “WDT reset”.
690
691 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
692
693 (% class="box warningmessage" %)
694 (((
695 **If there is the “Critical error”, all relays open.**
696 )))
697
698 == 3.6.25 General error parameters ==
699
700 == 3.6.26 Low SOC signal ==
701
702 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
703
704
705 In this section:
706
707 * Enable – a flag to enable signal generation;
708 * Minimum SOC, %;
709 * Tolerant SOC, %;
710 * Delay before setting the signal, second;
711 * Delay before clearing the signal, second;
712 * Lock the signal until the device is reset.
713
714 Signal generation conditions:
715
716 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
717
718 Conditions for clearing the signal:
719
720 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
721
722 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
723
724 == 3.6.27 High charging current signal ==
725
726 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
727
728
729 In this section:
730
731 * Enable – a flag to enable signal generation;
732 * Maximum charging current, А;
733 * Tolerant charging current, А;
734 * Delay before setting the signal, second;
735 * Delay before clearing the signal, second;
736 * Lock the signal until the device is reset.
737
738 Signal generation conditions:
739
740 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
741
742 Conditions for clearing the signal:
743
744 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
745
746 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
747
748 == 3.6.28 Heater control ==
749
750 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
751
752
753 In this section:
754
755 * Enable – a flag to enable heater control;
756 * Minimum cell temperature, °C;
757 * Tolerant cell temperature, °C;
758 * Delay before setting the signal, second;
759 * Delay before clearing the signal, second;
760 * Lock the signal until the device is reset;
761 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
762
763 As a result of operating the heating algorithm, the “Heater” signal is generated.
764
765 Conditions of signal generation:
766
767 * 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.
768
769 Conditions for clearing the signal:
770
771 * 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.
772
773 (% class="box infomessage" %)
774 (((
775 If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
776 )))
777
778 == 3.6.29 Heater (AUX) control ==
779
780 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
781
782
783 In this section:
784
785 * Enable – a flag to enable heater control;
786 * Minimum cell temperature, °C;
787 * Tolerant cell temperature, °C;
788 * Delay before setting the signal, second;
789 * Delay before clearing the signal, second;
790 * Lock the signal until the device is reset;
791 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
792
793 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
794
795 Conditions of signal generation:
796
797 * 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.
798
799 Conditions for clearing the signal:
800
801 * 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.
802
803 (% class="box infomessage" %)
804 (((
805 If there is the "Heater (AUX)" signal, the auxiliary heater relay closes and/or a signal is output to the corresponded digital output.
806 )))
807
808 == 3.6.30 Cooler control ==
809
810 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
811
812
813 In this section:
814
815 * Enable – a flag to enable cooler control;
816 * Maximum cell temperature, °C;
817 * Tolerant cell temperature, °C;
818 * Delay before setting the signal, second;
819 * Delay before clearing the signal, second;
820 * Lock the signal until the device is reset;
821 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
822
823 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
824
825 Conditions of signal generation:
826
827 * 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.
828
829 Conditions for clearing the signal:
830
831 * 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.
832
833 (% class="box infomessage" %)
834 (((
835 If there is the "Cooler" signal, the cooler relay closes and/or a signal is output to the corresponded digital output.
836 )))
837
838 == 3.6.31 Fault simulation ==
839
840 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
841
842 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
843
844
845 In this section:
846
847 * Overcurrent;
848 * Undervoltage;
849 * Overvoltage;
850 * Low CH temperature;
851 * Low DCH temperature;
852 * High CH temperature;
853 * High DCH temperature;
854 * Battery cover error;
855 * High humidity;
856 * Water;
857 * Current sensor error;
858 * Short circuit;
859 * Contactor high temperature;
860 * Unallowable charging;
861 * Stuck contactor;
862 * CH contactor feedback error;
863 * DCH contactor feedback error;
864 * PCH contactor feedback error;
865 * CH/DCH contactor feedback error;
866 * Main contactor feedback error;
867 * CH contactor cycles error;
868 * DCH contactor cycles error;
869 * Logic high temperature;
870 * Logic offline;
871 * Cell count error;
872 * Logic count error;
873 * Insulation error;
874 * Critical error;
875 * Low SOC;
876 * High charging current;
877 * Heater;
878 * Cooler.
879
880 To simulate errors, set the necessary flags and click on the "Save" button.