Skip to Content

Wiki source code of 3.6 Battery protection

Version 44.2 by Admin on 2025/02/19 10:35
Show last authors
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 Uocv correction depending on cu;
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 * Delay before setting the error, second;
88 * Delay before clearing the error, second;
89 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
90 * Lock the error until the device is reset.
91
92 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
93
94 Error generation conditions:
95
96 * 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.
97
98 Conditions for removing the error:
99
100 * 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.
101
102 (% class="box infomessage" %)
103 (((
104 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).
105 )))
106
107 === Low temperature protection ===
108
109 The board implements battery protection from too low temperature.
110
111 To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
112
113 [[image:1732213953083-955.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="338"]]
114
115 In this section:
116
117 * Enable – a flag to enable the protection;
118 * Minimum charging temperature, °C;
119 * Tolerant charging temperature, °C;
120 * Minimum discharging temperature, °C;
121 * Tolerant discharging temperature, °C;
122 * Delay before setting the error, second;
123 * Delay before clearing the error, second;
124 * Lock the error until the device is reset.
125
126 As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
127
128 Error generation conditions:
129
130 * 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.
131
132 Conditions for removing the error:
133
134 * 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.
135
136 (% class="box infomessage" %)
137 (((
138 If there is the "Low CH temperature" error, the **charging **relay opens.
139 If there is the "Low DCH temperature" error, the **discharging **relay opens.
140 )))
141
142 === High temperature protection ===
143
144 The board implements battery protection from too high temperature.
145
146 To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
147
148 [[image:1732213990755-759.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="258" width="370"]]
149
150 In this section:
151
152 * Enable – a flag to enable the protection;
153 * Maximum charging temperature, °C;
154 * Tolerant charging temperature, °C;
155 * Maximum discharging temperature, °C;
156 * Tolerant discharging temperature, °C;
157 * Delay before setting the error, second;
158 * Delay before clearing the error, second;
159 * Lock the error until the device is reset.
160
161 As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
162
163 Error generation conditions:
164
165 * 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.
166
167 Conditions for removing the error:
168
169 * 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.
170
171 (% class="box infomessage" %)
172 (((
173 If there is the "High CH temperature" error, the **charging **relay opens.
174 If there is the "High DCH temperature" error, the **discharging **relay opens.
175 )))
176
177 === Battery cover protection ===
178
179 To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
180
181 [[image:1732214030014-281.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="334"]]
182
183 In this section:
184
185 * Enable – a flag to enable the protection;
186 * Delay before setting the error, second;
187 * Delay before clearing the error, second;
188 * Lock the error until the device is reset.
189
190 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
191
192 Error generation conditions:
193
194 * there is a signal from the battery cover during the “Delay before setting the error” time.
195
196 Conditions for removing the error:
197
198 * no signal from the battery cover during the “Delay before clearing the error” time.
199
200 (% class="box warningmessage" %)
201 (((
202 If there is the "Battery cover error", the **“Critical error” **is generated and **all relays open.**
203 )))
204
205 === High humidity protection ===
206
207 The board can protect the battery from high humidity and water.
208
209 To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
210
211 [[image:1732214076060-358.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="185" width="321"]]
212
213 In this section:
214
215 * Enable – a flag to enable the protection;
216 * Maximum humidity, RH%;
217 * Tolerant humidity, RH%;
218 * Delay before setting the error, second;
219 * Delay before clearing the error, second;
220 * Lock the error until the device is reset.
221
222 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
223
224 Error generation conditions:
225
226 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
227
228 Conditions for removing the error:
229
230 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
231
232 (% class="box infomessage" %)
233 (((
234 If there is the "High humidity" error, no action is taken. The error is indicative.
235 )))
236
237 === Water protection ===
238
239 To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
240
241 [[image:1732214111990-184.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="199" width="340"]]
242
243 In this section:
244
245 * Enable – a flag to enable the protection;
246 * Maximum (water) humidty, RH%;
247 * Tolerant humidity, RH%;
248 * Delay before setting the error, second;
249 * Delay before clearing the error, second;
250 * Lock the error until the device is reset.
251
252 As a result of the operation of the battery protection from water, the "Water" error is generated.
253
254 Error generation conditions:
255
256 * the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
257
258 Conditions for removing the error:
259
260 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
261
262 (% class="box warningmessage" %)
263 (((
264 If there is the “Water” error,** **the **“Critical error”** is generated and **all relays open.**
265 )))
266
267 === Current sensor error ===
268
269 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.
270
271 To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
272
273 [[image:1732214146724-132.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="438" width="365"]]
274
275 In this section:
276
277 * Enable – a flag to enable the protection;
278 * Maximum voltage, V;
279 * Minimum voltage, V;
280 * Hysteresis voltage – a hysteresis value to clear the error, V;
281 * Delay before setting the error, second;
282 * Delay before clearing the error, second;
283 * Lock the error until the device is reset.
284
285 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
286
287 Error generation conditions:
288
289 * 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;
290 * 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.
291
292 Conditions for removing the error:
293
294 * 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.
295
296 (% class="box warningmessage" %)
297 (((
298 If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
299 )))
300
301 === Short circuit protection ===
302
303 The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
304
305 To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
306
307 [[image:1732214207026-822.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="528" width="371"]]
308
309 In this section:
310
311 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
312 ** Enable – a flag to enable the protection;
313 ** Maximum current, A;
314 ** Delay before setting the error, second;
315 * Delay before clearing the error, second;
316 * Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
317 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
318 * Lock the error until the device is reset.
319
320 If there is a short circuit, the "Short circuit" error is generated.
321
322 Error generation conditions:
323
324 * 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.
325
326 Conditions for removing the error:
327
328 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
329
330 (% class="box infomessage" %)
331 (((
332 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).
333 )))
334
335 === Contactor high temperature protection ===
336
337 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.
338
339 To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
340
341 [[image:1732214237851-405.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="234" width="336"]]
342
343 In this section:
344
345 * Enable – a flag to enable the protection;
346 * Maximum temperature, °C;
347 * Tolerant temperature, °C;
348 * Delay before setting the error, second;
349 * Delay before clearing the error, second;
350 * Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
351 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
352 * Lock the error until the device is reset.
353
354 If there is a contactor overheat, the "Contactor high temperature" error is generated.
355
356 Error generation conditions:
357
358 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
359
360 Conditions for removing the error:
361
362 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
363
364 (% class="box infomessage" %)
365 (((
366 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).
367 )))
368
369 === Unallowable charging protection ===
370
371 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
372
373 To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
374
375 [[image:1732214272022-547.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="312"]]
376
377 In this section:
378
379 * Enable – a flag to enable the protection;
380 * Delay before setting the error, second;
381 * Delay before clearing the error, second;
382 * Lock the error until the device is reset.
383
384 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
385
386 Error generation conditions:
387
388 * the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
389
390 Conditions for removing the error:
391
392 * the battery current is zero during the “Delay before clearing the error” time.
393
394 (% class="box infomessage" %)
395 (((
396 If there is the "Unallowable charging" error, the **discharging **relay opens.
397 )))
398
399 === Stuck contactor protection ===
400
401 The BMS Main 2.x protects contactors against sticking.
402
403 To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
404
405 [[image:1732214367207-318.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="331"]]
406
407 In this section:
408
409 * Enable – a flag to enable the protection;
410 * Delay before setting the error, second;
411 * Delay before clearing the error, second;
412 * Lock the error until the device is reset;
413
414 If there is a stuck contactor, the “Stuck contactor” error is generated.
415
416 Error generation conditions:
417
418 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
419
420 (% class="box warningmessage" %)
421 (((
422 If there is the “Stuck contactor error”, the **“Critical error” **is generated and **all relays open.**
423 )))
424
425 === Contactor feedback check ===
426
427 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]]).
428
429 To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
430
431 [[image:1732214400721-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="150" width="323"]]
432
433 In this section:
434
435 * Enable – a flag to enable the protection;
436 * Delay before setting the error, second;
437 * Delay before clearing the error, second;
438 * Lock the error until the device is reset;
439
440 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
441
442 * discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
443
444 (% class="box warningmessage" %)
445 (((
446 If there is the contactor feedback error, the **“Critical error” **is generated and **all relays open.**
447 )))
448
449 === Charging contactor cycles protection ===
450
451 The BMS protects the charging contactor against frequent switching.
452
453 To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
454
455 [[image:1732214432750-543.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="260" width="336"]]
456
457 In this section:
458
459 * Enable – a flag to enable the protection;
460 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
461 * Period – a time in which the BMS counts switchings of the charging contactor, second;
462 * Delay before setting the error, second;
463 * Delay before clearing the error, second;
464 * Lock the error until the device is reset;
465 * Cycles – a number of the charging contactor switchings made during battery operation.
466
467 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
468
469 Error generation conditions:
470
471 * 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.
472
473 Conditions for removing the error:
474
475 * the “Delay before clearing the error” time has passed since the error was generated.
476
477 (% class="box infomessage" %)
478 (((
479 If there is the "CH contactor cycles error" error, the **charging **relay opens.
480 )))
481
482 === Discharging contactor cycles protection ===
483
484 The BMS protects the discharging contactor against frequent switching.
485
486 To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
487
488 [[image:1732214468462-541.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="269" width="346"]]
489
490 In this section:
491
492 * Enable – a flag to enable the protection;
493 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
494 * Period – a time in which the BMS counts switchings of the charging contactor, second;
495 * Delay before setting the error, second;
496 * Delay before clearing the error, second;
497 * Lock the error until the device is reset;
498 * Cycles – a number of the charging contactor switchings made during battery operation.
499
500 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
501
502 Error generation conditions:
503
504 * 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.
505
506 Conditions for removing the error:
507
508 * the “Delay before clearing the error” time has passed since the error was generated.
509
510 (% class="box infomessage" %)
511 (((
512 If there is the "DCH contactor cycles error" error, the **discharging **relay opens.
513 )))
514
515 === Temperature sensor error ===
516
517 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
518
519 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
520
521 [[image:1732214501360-654.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="334"]]
522
523 In this section:
524
525 * Enable – a flag to enable the protection;
526 * Delay before setting the error, second;
527 * Delay before clearing the error, second;
528 * Lock the error until the device is reset.
529
530 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.
531
532 (% class="box warningmessage" %)
533 (((
534 If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all relays open.**
535 )))
536
537 === Logic high temperature protection ===
538
539 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
540
541 [[image:1732214545352-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="156" width="309"]]
542
543 In this section:
544
545 * Enable – a flag to enable the protection;
546 * Maximum Logic temperature, °C;
547 * Tolerant Logic temperature, °C;
548 * Lock the error until the device is reset.
549
550 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
551
552 Error generation conditions:
553
554 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
555
556 Conditions for removing the error:
557
558 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
559
560 (% class="box infomessage" %)
561 (((
562 Cell balancing is prohibited for overheated boards.
563 )))
564
565 === Logic offline protection ===
566
567 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
568
569 [[image:1732214579147-515.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="204"]]
570
571 In this section:
572
573 * Enable – a flag to enable the protection;
574 * Lock the error until the device is reset.
575
576 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
577
578 Error generation conditions:
579
580 * 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.
581
582 Conditions for removing the error:
583
584 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
585
586 (% class="box warningmessage" %)
587 (((
588 If there is the "Logic offline" error, the **“Critical error”** is generated and **all relays open.**
589 )))
590
591 === Cell count protection ===
592
593 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
594
595 [[image:1732214641606-453.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="341"]]
596
597 In this section:
598
599 * Enable – a flag to enable the protection;
600 * Cell count – a number of cells connected to the BMS;
601 * Delay before setting the error, second;
602 * Delay before clearing the error, second;
603 * Lock the error until the device is reset.
604
605 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
606
607 Error generation conditions:
608
609 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
610
611 Conditions for removing the error:
612
613 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
614
615 (% class="box warningmessage" %)
616 (((
617 If there is the "Cell count error",** **the **“Critical error”** is generated and **all relays open.**
618 )))
619
620 === Logic count protection ===
621
622 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":
623
624 [[image:1732214675358-202.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="163" width="230"]]
625
626 In this section:
627
628 * Enable – a flag to enable the protection;
629 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
630 * 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);
631 * Lock the error until the device is reset.
632
633 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.
634
635 Error generation conditions:
636
637 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
638
639 Conditions for removing the error:
640
641 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
642
643 (% class="box warningmessage" %)
644 (((
645 If there is the "Logic count error", the **“Critical error” **is generated and **all relays open.**
646 )))
647
648 === WDT protection ===
649
650 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.
651
652 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
653
654 [[image:1732214703914-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="323"]]
655
656 In this section:
657
658 * Enable – a flag to enable the protection;
659 * Delay before clearing the error, second;
660 * Lock the error until the device is reset.
661
662 Conditions for removing the error:
663
664 * the “Delay before clearing the error” time has passed from the board startup.
665
666 (% class="box warningmessage" %)
667 (((
668 If there is the "WDT reset" error, the **“Critical error”** is generated and** all relays open.**
669 )))
670
671 === Insulation monitoring ===
672
673 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
674
675 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
676
677 [[image:1732214731490-961.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="315"]]
678
679 In this section:
680
681 * Enable – a flag to enable the protection;
682 * Algorithm:
683 ** Always;
684 ** On charging;
685 ** Except charging;
686 * Delay before setting the error, second;
687 * Delay before clearing the error, second;
688 * Lock the error until the device is reset.
689
690 Error is set if corresponding discrete input is set up and it received logical zero.
691
692 (% class="box warningmessage" %)
693 (((
694 If there is the "Insulation monitoring" error, the **“Critical error”** is generated and** all relays open.**
695 )))
696
697 === Critical error parameters ===
698
699 To change the critical error parameters, select the menu "Protections → Critical error parameters":
700
701 [[image:1732214761141-983.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="158" width="348"]]
702
703 In this section:
704
705 * Enable – a flag to enable the protection;
706 * Delay before setting the error, second;
707 * Delay before clearing the error, second;
708 * Lock the error until the device is reset.
709
710 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
711
712 * “Battery cover error”;
713 * “Water”;
714 * “Logic offline”;
715 * “Cell count error”;
716 * “Logic count error”;
717 * “ADC error”;
718 * “No temp. sensors”;
719 * “Temp. sensor is shorted”;
720 * “Current sensor error”;
721 * "Stuck contactor";
722 * "Contactor feedback";
723 * “Shunt offline”;
724 * “Shunt error”;
725 * “Settings error”;
726 * “WDT reset”
727 * "Insulation monitoring".
728
729 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
730
731 (% class="box warningmessage" %)
732 (((
733 **If there is the “Critical error”, all relays open.**
734 )))
735
736 === General error parameters ===
737
738 To change the general error parameters, select the menu "Protections → General error parameters":
739
740 [[image:1732214987517-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="535" width="349"]]
741
742 In this section:
743
744 * Enable – a flag to enable the protection;
745 * Delay before setting the error, second;
746 * Delay before clearing the error, second;
747 * Lock the error until the device is reset;
748 * Errors – a section to select errors that should trigger General error.
749
750 The general error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
751
752 The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
753
754 (% class="box infomessage" %)
755 (((
756 The "General error" is //indicative //and can be linked to any discrete output of the board.
757 )))
758
759 === Low SOC signal ===
760
761 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
762
763 [[image:1732215174961-645.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="186" width="325"]]
764
765 In this section:
766
767 * Enable – a flag to enable signal generation;
768 * Minimum SOC, %;
769 * Tolerant SOC, %;
770 * Delay before setting the signal, second;
771 * Delay before clearing the signal, second;
772 * Lock the signal until the device is reset.
773
774 Signal generation conditions:
775
776 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
777
778 Conditions for clearing the signal:
779
780 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
781
782 (% class="box infomessage" %)
783 (((
784 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
785 )))
786
787 === High charging current signal ===
788
789 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
790
791 [[image:1732215211714-445.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="181" width="322"]]
792
793 In this section:
794
795 * Enable – a flag to enable signal generation;
796 * Maximum charging current, А;
797 * Tolerant charging current, А;
798 * Delay before setting the signal, second;
799 * Delay before clearing the signal, second;
800 * Lock the signal until the device is reset.
801
802 Signal generation conditions:
803
804 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
805
806 Conditions for clearing the signal:
807
808 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
809
810 (% class="box infomessage" %)
811 (((
812 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
813 )))
814
815 === Heater control ===
816
817 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
818
819 [[image:1732215252650-791.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="233" width="370"]]
820
821 In this section:
822
823 * Enable – a flag to enable heater control;
824 * Minimum cell temperature, °C;
825 * Tolerant cell temperature, °C;
826 * Delay before setting the signal, second;
827 * Delay before clearing the signal, second;
828 * Lock the signal until the device is reset;
829 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
830
831 As a result of operating the heating algorithm, the “Heater” signal is generated.
832
833 Conditions of signal generation:
834
835 * 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.
836
837 Conditions for clearing the signal:
838
839 * 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.
840
841 (% class="box infomessage" %)
842 (((
843 If there is the "Heater" signal, the **heater **relay closes and/or a signal is output to the corresponded digital output.
844 )))
845
846 === Heater (AUX) control ===
847
848 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
849
850 [[image:1732215282135-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="361"]]
851
852 In this section:
853
854 * Enable – a flag to enable heater control;
855 * Minimum cell temperature, °C;
856 * Tolerant cell temperature, °C;
857 * Delay before setting the signal, second;
858 * Delay before clearing the signal, second;
859 * Lock the signal until the device is reset;
860 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
861
862 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
863
864 Conditions of signal generation:
865
866 * 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.
867
868 Conditions for clearing the signal:
869
870 * 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.
871
872 (% class="box infomessage" %)
873 (((
874 If there is the "Heater (AUX)" signal, the **auxiliary heater **relay closes and/or a signal is output to the corresponded digital output.
875 )))
876
877 === Cooler control ===
878
879 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
880
881 [[image:1732215313977-499.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="219" width="348"]]
882
883 In this section:
884
885 * Enable – a flag to enable cooler control;
886 * Maximum cell temperature, °C;
887 * Tolerant cell temperature, °C;
888 * Delay before setting the signal, second;
889 * Delay before clearing the signal, second;
890 * Lock the signal until the device is reset;
891 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
892
893 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
894
895 Conditions of signal generation:
896
897 * 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.
898
899 Conditions for clearing the signal:
900
901 * 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.
902
903 (% class="box infomessage" %)
904 (((
905 If there is the "Cooler" signal, the **cooler **relay closes and/or a signal is output to the corresponded digital output.
906 )))
907
908 === Fault simulation ===
909
910 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
911
912 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
913
914 [[image:1732215359330-850.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="732" width="204"]]
915
916 To simulate errors, set the necessary flags and click on the "Save" button.