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Wiki source code of 3.6 Battery protection

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1 (% data-numbered-headings-start="3" style="--numbered-headings-start: 2;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
2 = Configuration =
3
4 (% data-numbered-headings-start="6" style="--numbered-headings-start: 5;font-size: 0px;color: rgba(0, 0, 0, 0.0);margin-bottom: 0px; margin-top: 0px;" %)
5 == Battery protection ==
6
7 The BMS Main 2.x board continuously monitors the state of the cells, BMS Logic boards, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8
9 === Overcurrent protection ===
10
11 To change the current protection of the battery, select the menu "Protections → Overcurrent protection":
12
13 [[image:1743588404359-971.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="325" width="450"]]
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 * Use other delays if the battery is discharging – a flag to enable alternative timings for
25 * Lock the error until the device is reset – a flag to block the error until the board is restarted.
26
27 As a result of operation of the current protection, the "Overcurrent" error is generated.
28
29 Error generation conditions:
30
31 * 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;
32 * 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.
33
34 Conditions for removing the error:
35
36 * 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;
37 * 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.
38
39 (% class="box infomessage" %)
40 (((
41 If there is the "Overcurrent" error, the **charging **and **discharging **relay open.
42 )))
43
44 === Undervoltage protection ===
45
46 The board implements battery protection from too low or too high voltage on the cells.
47
48 To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
49
50 [[image:1739960999969-617.png||alt="1739961158202-478.png" data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="351"]]
51
52 In this section:
53
54 * Enable – a flag to enable the protection;
55 * Minimum cell voltage, V;
56 * Tolerant cell voltage, V;
57 * Check the open circuit voltage instead of the actual voltage – a flag to enable U,,ocv,, correction depending on cell current and resistance;
58 * Delay before setting the error, second;
59 * Delay before clearing the error, second;
60 * Lock the error until the device is reset.
61
62 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
63
64 Error generation conditions:
65
66 * 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.
67
68 Conditions for removing the error:
69
70 * 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.
71
72 (% class="box infomessage" %)
73 (((
74 If there is the "Undervoltage" error, the **discharging **relay opens.
75 )))
76
77 === Overvoltage protection ===
78
79 To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
80
81 [[image:1739961158202-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="353"]]
82
83 In this section:
84
85 * Enable – a flag to enable the protection;
86 * Maximum cell voltage, V;
87 * Tolerant cell voltage, V;
88 * Check the open circuit voltage instead of the actual voltage – a flag to enable U,,ocv,, correction depending on cell current and resistance;
89 * Delay before setting the error, second;
90 * Delay before clearing the error, second;
91 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
92 * Lock the error until the device is reset.
93
94 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
95
96 Error generation conditions:
97
98 * 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.
99
100 Conditions for removing the error:
101
102 * 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.
103
104 (% class="box infomessage" %)
105 (((
106 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).
107 )))
108
109 === Low temperature protection ===
110
111 The board implements battery protection from too low temperature.
112
113 To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
114
115 [[image:1732213953083-955.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="338"]]
116
117 In this section:
118
119 * Enable – a flag to enable the protection;
120 * Minimum charging temperature, °C;
121 * Tolerant charging temperature, °C;
122 * Minimum discharging temperature, °C;
123 * Tolerant discharging temperature, °C;
124 * Delay before setting the error, second;
125 * Delay before clearing the error, second;
126 * Lock the error until the device is reset.
127
128 As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
129
130 Error generation conditions:
131
132 * 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.
133
134 Conditions for removing the error:
135
136 * 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.
137
138 (% class="box infomessage" %)
139 (((
140 If there is the "Low CH temperature" error, the **charging **relay opens.
141 If there is the "Low DCH temperature" error, the **discharging **relay opens.
142 )))
143
144 === High temperature protection ===
145
146 The board implements battery protection from too high temperature.
147
148 To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
149
150 [[image:1732213990755-759.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="258" width="370"]]
151
152 In this section:
153
154 * Enable – a flag to enable the protection;
155 * Maximum charging temperature, °C;
156 * Tolerant charging temperature, °C;
157 * Maximum discharging temperature, °C;
158 * Tolerant discharging temperature, °C;
159 * Delay before setting the error, second;
160 * Delay before clearing the error, second;
161 * Lock the error until the device is reset.
162
163 As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
164
165 Error generation conditions:
166
167 * 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.
168
169 Conditions for removing the error:
170
171 * 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.
172
173 (% class="box infomessage" %)
174 (((
175 If there is the "High CH temperature" error, the **charging **relay opens.
176 If there is the "High DCH temperature" error, the **discharging **relay opens.
177 )))
178
179 === Battery cover protection ===
180
181 To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
182
183 [[image:1732214030014-281.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="334"]]
184
185 In this section:
186
187 * Enable – a flag to enable the protection;
188 * Delay before setting the error, second;
189 * Delay before clearing the error, second;
190 * Lock the error until the device is reset.
191
192 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
193
194 Error generation conditions:
195
196 * there is a signal from the battery cover during the “Delay before setting the error” time.
197
198 Conditions for removing the error:
199
200 * no signal from the battery cover during the “Delay before clearing the error” time.
201
202 (% class="box warningmessage" %)
203 (((
204 If there is the "Battery cover error", the **“Critical error” **is generated and **all relays open.**
205 )))
206
207 === High humidity protection ===
208
209 The board can protect the battery from high humidity and water.
210
211 To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
212
213 [[image:1732214076060-358.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="185" width="321"]]
214
215 In this section:
216
217 * Enable – a flag to enable the protection;
218 * Maximum humidity, RH%;
219 * Tolerant humidity, RH%;
220 * Delay before setting the error, second;
221 * Delay before clearing the error, second;
222 * Lock the error until the device is reset.
223
224 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
225
226 Error generation conditions:
227
228 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
229
230 Conditions for removing the error:
231
232 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
233
234 (% class="box infomessage" %)
235 (((
236 If there is the "High humidity" error, no action is taken. The error is indicative.
237 )))
238
239 === Water protection ===
240
241 To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
242
243 [[image:1732214111990-184.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="199" width="340"]]
244
245 In this section:
246
247 * Enable – a flag to enable the protection;
248 * Maximum (water) humidty, RH%;
249 * Tolerant humidity, RH%;
250 * Delay before setting the error, second;
251 * Delay before clearing the error, second;
252 * Lock the error until the device is reset.
253
254 As a result of the operation of the battery protection from water, the "Water" error is generated.
255
256 Error generation conditions:
257
258 * the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
259
260 Conditions for removing the error:
261
262 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
263
264 (% class="box warningmessage" %)
265 (((
266 If there is the “Water” error,** **the **“Critical error”** is generated and **all relays open.**
267 )))
268
269 === Current sensor error ===
270
271 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.
272
273 To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
274
275 [[image:1732214146724-132.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="438" width="365"]]
276
277 In this section:
278
279 * Enable – a flag to enable the protection;
280 * Maximum voltage, V;
281 * Minimum voltage, V;
282 * Hysteresis voltage – a hysteresis value to clear the error, V;
283 * Delay before setting the error, second;
284 * Delay before clearing the error, second;
285 * Lock the error until the device is reset.
286
287 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
288
289 Error generation conditions:
290
291 * 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;
292 * 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.
293
294 Conditions for removing the error:
295
296 * 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.
297
298 (% class="box warningmessage" %)
299 (((
300 If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
301 )))
302
303 === Short circuit protection ===
304
305 The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
306
307 To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
308
309 [[image:1732214207026-822.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="528" width="371"]]
310
311 In this section:
312
313 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
314 ** Enable – a flag to enable the protection;
315 ** Maximum current, A;
316 ** Delay before setting the error, second;
317 * Delay before clearing the error, second;
318 * Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
319 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
320 * Lock the error until the device is reset.
321
322 If there is a short circuit, the "Short circuit" error is generated.
323
324 Error generation conditions:
325
326 * 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.
327
328 Conditions for removing the error:
329
330 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
331
332 (% class="box infomessage" %)
333 (((
334 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).
335 )))
336
337 === Contactor high temperature protection ===
338
339 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.
340
341 To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
342
343 [[image:1732214237851-405.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="234" width="336"]]
344
345 In this section:
346
347 * Enable – a flag to enable the protection;
348 * Maximum temperature, °C;
349 * Tolerant temperature, °C;
350 * Delay before setting the error, second;
351 * Delay before clearing the error, second;
352 * Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
353 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
354 * Lock the error until the device is reset.
355
356 If there is a contactor overheat, the "Contactor high temperature" error is generated.
357
358 Error generation conditions:
359
360 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
361
362 Conditions for removing the error:
363
364 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
365
366 (% class="box infomessage" %)
367 (((
368 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).
369 )))
370
371 === Unallowable charging protection ===
372
373 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
374
375 To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
376
377 [[image:1732214272022-547.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="312"]]
378
379 In this section:
380
381 * Enable – a flag to enable the protection;
382 * Delay before setting the error, second;
383 * Delay before clearing the error, second;
384 * Lock the error until the device is reset.
385
386 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
387
388 Error generation conditions:
389
390 * the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
391
392 Conditions for removing the error:
393
394 * the battery current is zero during the “Delay before clearing the error” time.
395
396 (% class="box infomessage" %)
397 (((
398 If there is the "Unallowable charging" error, the **discharging **relay opens.
399 )))
400
401 === Stuck contactor protection ===
402
403 The BMS Main 2.x protects contactors against sticking.
404
405 To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
406
407 [[image:1732214367207-318.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="331"]]
408
409 In this section:
410
411 * Enable – a flag to enable the protection;
412 * Delay before setting the error, second;
413 * Delay before clearing the error, second;
414 * Lock the error until the device is reset;
415
416 If there is a stuck contactor, the “Stuck contactor” error is generated.
417
418 Error generation conditions:
419
420 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
421
422 (% class="box warningmessage" %)
423 (((
424 If there is the “Stuck contactor error”, the **“Critical error” **is generated and **all relays open.**
425 )))
426
427 === Contactor feedback check ===
428
429 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]]).
430
431 To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
432
433 [[image:1732214400721-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="150" width="323"]]
434
435 In this section:
436
437 * Enable – a flag to enable the protection;
438 * Delay before setting the error, second;
439 * Delay before clearing the error, second;
440 * Lock the error until the device is reset;
441
442 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
443
444 * discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
445
446 (% class="box warningmessage" %)
447 (((
448 If there is the contactor feedback error, the **“Critical error” **is generated and **all relays open.**
449 )))
450
451 === Charging contactor cycles protection ===
452
453 The BMS protects the charging contactor against frequent switching.
454
455 To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
456
457 [[image:1732214432750-543.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="260" width="336"]]
458
459 In this section:
460
461 * Enable – a flag to enable the protection;
462 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
463 * Period – a time in which the BMS counts switchings of the charging contactor, second;
464 * Delay before setting the error, second;
465 * Delay before clearing the error, second;
466 * Lock the error until the device is reset;
467 * Cycles – a number of the charging contactor switchings made during battery operation.
468
469 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
470
471 Error generation conditions:
472
473 * 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.
474
475 Conditions for removing the error:
476
477 * the “Delay before clearing the error” time has passed since the error was generated.
478
479 (% class="box infomessage" %)
480 (((
481 If there is the "CH contactor cycles error" error, the **charging **relay opens.
482 )))
483
484 === Discharging contactor cycles protection ===
485
486 The BMS protects the discharging contactor against frequent switching.
487
488 To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
489
490 [[image:1732214468462-541.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="269" width="346"]]
491
492 In this section:
493
494 * Enable – a flag to enable the protection;
495 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
496 * Period – a time in which the BMS counts switchings of the charging contactor, second;
497 * Delay before setting the error, second;
498 * Delay before clearing the error, second;
499 * Lock the error until the device is reset;
500 * Cycles – a number of the charging contactor switchings made during battery operation.
501
502 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
503
504 Error generation conditions:
505
506 * 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.
507
508 Conditions for removing the error:
509
510 * the “Delay before clearing the error” time has passed since the error was generated.
511
512 (% class="box infomessage" %)
513 (((
514 If there is the "DCH contactor cycles error" error, the **discharging **relay opens.
515 )))
516
517 === Temperature sensor error ===
518
519 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
520
521 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
522
523 [[image:1732214501360-654.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="334"]]
524
525 In this section:
526
527 * Enable – a flag to enable the protection;
528 * Delay before setting the error, second;
529 * Delay before clearing the error, second;
530 * Lock the error until the device is reset.
531
532 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.
533
534 (% class="box warningmessage" %)
535 (((
536 If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all relays open.**
537 )))
538
539 === Logic high temperature protection ===
540
541 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
542
543 [[image:1732214545352-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="156" width="309"]]
544
545 In this section:
546
547 * Enable – a flag to enable the protection;
548 * Maximum Logic temperature, °C;
549 * Tolerant Logic temperature, °C;
550 * Lock the error until the device is reset.
551
552 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
553
554 Error generation conditions:
555
556 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
557
558 Conditions for removing the error:
559
560 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
561
562 (% class="box infomessage" %)
563 (((
564 Cell balancing is prohibited for overheated boards.
565 )))
566
567 === Logic offline protection ===
568
569 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
570
571 [[image:1732214579147-515.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="204"]]
572
573 In this section:
574
575 * Enable – a flag to enable the protection;
576 * Lock the error until the device is reset.
577
578 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
579
580 Error generation conditions:
581
582 * 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.
583
584 Conditions for removing the error:
585
586 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
587
588 (% class="box warningmessage" %)
589 (((
590 If there is the "Logic offline" error, the **“Critical error”** is generated and **all relays open.**
591 )))
592
593 === Cell count protection ===
594
595 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
596
597 [[image:1732214641606-453.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="341"]]
598
599 In this section:
600
601 * Enable – a flag to enable the protection;
602 * Cell count – a number of cells connected to the BMS;
603 * Delay before setting the error, second;
604 * Delay before clearing the error, second;
605 * Lock the error until the device is reset.
606
607 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
608
609 Error generation conditions:
610
611 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
612
613 Conditions for removing the error:
614
615 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
616
617 (% class="box warningmessage" %)
618 (((
619 If there is the "Cell count error",** **the **“Critical error”** is generated and **all relays open.**
620 )))
621
622 === Logic count protection ===
623
624 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":
625
626 [[image:1732214675358-202.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="163" width="230"]]
627
628 In this section:
629
630 * Enable – a flag to enable the protection;
631 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
632 * 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);
633 * Lock the error until the device is reset.
634
635 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.
636
637 Error generation conditions:
638
639 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
640
641 Conditions for removing the error:
642
643 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
644
645 (% class="box warningmessage" %)
646 (((
647 If there is the "Logic count error", the **“Critical error” **is generated and **all relays open.**
648 )))
649
650 === WDT protection ===
651
652 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.
653
654 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
655
656 [[image:1732214703914-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="323"]]
657
658 In this section:
659
660 * Enable – a flag to enable the protection;
661 * Delay before clearing the error, second;
662 * Lock the error until the device is reset.
663
664 Conditions for removing the error:
665
666 * the “Delay before clearing the error” time has passed from the board startup.
667
668 (% class="box warningmessage" %)
669 (((
670 If there is the "WDT reset" error, the **“Critical error”** is generated and** all relays open.**
671 )))
672
673 === Insulation monitoring ===
674
675 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
676
677 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
678
679 [[image:1732214731490-961.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="315"]]
680
681 In this section:
682
683 * Enable – a flag to enable the protection;
684 * Algorithm:
685 ** Always;
686 ** On charging;
687 ** Except charging;
688 * Delay before setting the error, second;
689 * Delay before clearing the error, second;
690 * Lock the error until the device is reset.
691
692 Error is set if corresponding discrete input is set up and it received logical zero.
693
694 (% class="box warningmessage" %)
695 (((
696 If there is the "Insulation monitoring" error, the **“Critical error”** is generated and** all relays open.**
697 )))
698
699 === Critical error parameters ===
700
701 To change the critical error parameters, select the menu "Protections → Critical error parameters":
702
703 [[image:1732214761141-983.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="158" width="348"]]
704
705 In this section:
706
707 * Enable – a flag to enable the protection;
708 * Delay before setting the error, second;
709 * Delay before clearing the error, second;
710 * Lock the error until the device is reset.
711
712 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
713
714 * “Battery cover error”;
715 * “Water”;
716 * “Logic offline”;
717 * “Cell count error”;
718 * “Logic count error”;
719 * “ADC error”;
720 * “No temp. sensors”;
721 * “Temp. sensor is shorted”;
722 * “Current sensor error”;
723 * "Stuck contactor";
724 * "Contactor feedback";
725 * “Shunt offline”;
726 * “Shunt error”;
727 * “Settings error”;
728 * “WDT reset”
729 * "Insulation monitoring".
730
731 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
732
733 (% class="box warningmessage" %)
734 (((
735 **If there is the “Critical error”, all relays open.**
736 )))
737
738 === General error parameters ===
739
740 To change the general error parameters, select the menu "Protections → General error parameters":
741
742 [[image:1732214987517-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="535" width="349"]]
743
744 In this section:
745
746 * Enable – a flag to enable the protection;
747 * Delay before setting the error, second;
748 * Delay before clearing the error, second;
749 * Lock the error until the device is reset;
750 * Errors – a section to select errors that should trigger General error.
751
752 The general error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
753
754 The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
755
756 (% class="box infomessage" %)
757 (((
758 The "General error" is //indicative //and can be linked to any discrete output of the board.
759 )))
760
761 === Low SOC signal ===
762
763 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
764
765 [[image:1732215174961-645.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="186" width="325"]]
766
767 In this section:
768
769 * Enable – a flag to enable signal generation;
770 * Minimum SOC, %;
771 * Tolerant SOC, %;
772 * Delay before setting the signal, second;
773 * Delay before clearing the signal, second;
774 * Lock the signal until the device is reset.
775
776 Signal generation conditions:
777
778 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
779
780 Conditions for clearing the signal:
781
782 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
783
784 (% class="box infomessage" %)
785 (((
786 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
787 )))
788
789 === High charging current signal ===
790
791 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
792
793 [[image:1732215211714-445.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="181" width="322"]]
794
795 In this section:
796
797 * Enable – a flag to enable signal generation;
798 * Maximum charging current, А;
799 * Tolerant charging current, А;
800 * Delay before setting the signal, second;
801 * Delay before clearing the signal, second;
802 * Lock the signal until the device is reset.
803
804 Signal generation conditions:
805
806 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
807
808 Conditions for clearing the signal:
809
810 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
811
812 (% class="box infomessage" %)
813 (((
814 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
815 )))
816
817 === Heater control ===
818
819 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
820
821 [[image:1732215252650-791.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="233" width="370"]]
822
823 In this section:
824
825 * Enable – a flag to enable heater control;
826 * Minimum cell temperature, °C;
827 * Tolerant cell temperature, °C;
828 * Delay before setting the signal, second;
829 * Delay before clearing the signal, second;
830 * Lock the signal until the device is reset;
831 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
832
833 As a result of operating the heating algorithm, the “Heater” signal is generated.
834
835 Conditions of signal generation:
836
837 * 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.
838
839 Conditions for clearing the signal:
840
841 * 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.
842
843 (% class="box infomessage" %)
844 (((
845 If there is the "Heater" signal, the **heater **relay closes and/or a signal is output to the corresponded digital output.
846 )))
847
848 === Heater (AUX) control ===
849
850 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
851
852 [[image:1732215282135-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="361"]]
853
854 In this section:
855
856 * Enable – a flag to enable heater control;
857 * Minimum cell temperature, °C;
858 * Tolerant cell temperature, °C;
859 * Delay before setting the signal, second;
860 * Delay before clearing the signal, second;
861 * Lock the signal until the device is reset;
862 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
863
864 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
865
866 Conditions of signal generation:
867
868 * 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.
869
870 Conditions for clearing the signal:
871
872 * 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.
873
874 (% class="box infomessage" %)
875 (((
876 If there is the "Heater (AUX)" signal, the **auxiliary heater **relay closes and/or a signal is output to the corresponded digital output.
877 )))
878
879 === Cooler control ===
880
881 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
882
883 [[image:1732215313977-499.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="219" width="348"]]
884
885 In this section:
886
887 * Enable – a flag to enable cooler control;
888 * Maximum cell temperature, °C;
889 * Tolerant cell temperature, °C;
890 * Delay before setting the signal, second;
891 * Delay before clearing the signal, second;
892 * Lock the signal until the device is reset;
893 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
894
895 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
896
897 Conditions of signal generation:
898
899 * 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.
900
901 Conditions for clearing the signal:
902
903 * 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.
904
905 (% class="box infomessage" %)
906 (((
907 If there is the "Cooler" signal, the **cooler **relay closes and/or a signal is output to the corresponded digital output.
908 )))
909
910 === Fault simulation ===
911
912 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
913
914 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
915
916 [[image:1732215359330-850.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="732" width="204"]]
917
918 To simulate errors, set the necessary flags and click on the "Save" button.