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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 battery discharging;
25 * Discharging: Delay before setting the error, second;
26 * Discharging: Delay before clearing the error, second;
27 * Lock the error until the device is reset – a flag to block the error until the board is restarted.
28
29 As a result of operation of the current protection, the "Overcurrent" error is generated.
30
31 Error generation conditions:
32
33 * 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;
34 * 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.
35
36 Conditions for removing the error:
37
38 * 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;
39 * 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.
40
41 (% class="box infomessage" %)
42 (((
43 If there is the "Overcurrent" error, the **charging **and **discharging **relay open.
44 )))
45
46 === Undervoltage protection ===
47
48 The board implements battery protection from too low or too high voltage on the cells.
49
50 To change the battery protection parameters from low voltage on the cells, select the menu "Protections → Undervoltage protection":
51
52 [[image:1739960999969-617.png||alt="1739961158202-478.png" data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="351"]]
53
54 In this section:
55
56 * Enable – a flag to enable the protection;
57 * Minimum cell voltage, V;
58 * Tolerant cell voltage, V;
59 * Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
60 * Delay before setting the error, second;
61 * Delay before clearing the error, second;
62 * Lock the error until the device is reset.
63
64 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
65
66 Error generation conditions:
67
68 * 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.
69
70 Conditions for removing the error:
71
72 * 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.
73
74 (% class="box infomessage" %)
75 (((
76 If there is the "Undervoltage" error, the **discharging **relay opens.
77 )))
78
79 === Overvoltage protection ===
80
81 To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
82
83 [[image:1739961158202-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="353"]]
84
85 In this section:
86
87 * Enable – a flag to enable the protection;
88 * Maximum cell voltage, V;
89 * Tolerant cell voltage, V;
90 * Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
91 * Delay before setting the error, second;
92 * Delay before clearing the error, second;
93 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
94 * Lock the error until the device is reset.
95
96 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
97
98 Error generation conditions:
99
100 * 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.
101
102 Conditions for removing the error:
103
104 * 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.
105
106 (% class="box infomessage" %)
107 (((
108 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).
109 )))
110
111 === Low temperature protection ===
112
113 The board implements battery protection from too low temperature.
114
115 To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
116
117 [[image:1732213953083-955.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="338"]]
118
119 In this section:
120
121 * Enable – a flag to enable the protection;
122 * Minimum charging temperature, °C;
123 * Tolerant charging temperature, °C;
124 * Minimum discharging temperature, °C;
125 * Tolerant discharging temperature, °C;
126 * Delay before setting the error, second;
127 * Delay before clearing the error, second;
128 * Lock the error until the device is reset.
129
130 As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
131
132 Error generation conditions:
133
134 * 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.
135
136 Conditions for removing the error:
137
138 * 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.
139
140 (% class="box infomessage" %)
141 (((
142 If there is the "Low CH temperature" error, the **charging **relay opens.
143 If there is the "Low DCH temperature" error, the **discharging **relay opens.
144 )))
145
146 === High temperature protection ===
147
148 The board implements battery protection from too high temperature.
149
150 To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
151
152 [[image:1732213990755-759.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="258" width="370"]]
153
154 In this section:
155
156 * Enable – a flag to enable the protection;
157 * Maximum charging temperature, °C;
158 * Tolerant charging temperature, °C;
159 * Maximum discharging temperature, °C;
160 * Tolerant discharging temperature, °C;
161 * Delay before setting the error, second;
162 * Delay before clearing the error, second;
163 * Lock the error until the device is reset.
164
165 As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
166
167 Error generation conditions:
168
169 * 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.
170
171 Conditions for removing the error:
172
173 * 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.
174
175 (% class="box infomessage" %)
176 (((
177 If there is the "High CH temperature" error, the **charging **relay opens.
178 If there is the "High DCH temperature" error, the **discharging **relay opens.
179 )))
180
181 === Battery cover protection ===
182
183 To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
184
185 [[image:1732214030014-281.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="334"]]
186
187 In this section:
188
189 * Enable – a flag to enable the protection;
190 * Delay before setting the error, second;
191 * Delay before clearing the error, second;
192 * Lock the error until the device is reset.
193
194 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
195
196 Error generation conditions:
197
198 * there is a signal from the battery cover during the “Delay before setting the error” time.
199
200 Conditions for removing the error:
201
202 * no signal from the battery cover during the “Delay before clearing the error” time.
203
204 (% class="box warningmessage" %)
205 (((
206 If there is the "Battery cover error", the **“Critical error” **is generated and **all relays open.**
207 )))
208
209 === High humidity protection ===
210
211 The board can protect the battery from high humidity and water.
212
213 To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
214
215 [[image:1732214076060-358.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="185" width="321"]]
216
217 In this section:
218
219 * Enable – a flag to enable the protection;
220 * Maximum humidity, RH%;
221 * Tolerant humidity, RH%;
222 * Delay before setting the error, second;
223 * Delay before clearing the error, second;
224 * Lock the error until the device is reset.
225
226 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
227
228 Error generation conditions:
229
230 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
231
232 Conditions for removing the error:
233
234 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
235
236 (% class="box infomessage" %)
237 (((
238 If there is the "High humidity" error, no action is taken. The error is indicative.
239 )))
240
241 === Water protection ===
242
243 To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
244
245 [[image:1732214111990-184.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="199" width="340"]]
246
247 In this section:
248
249 * Enable – a flag to enable the protection;
250 * Maximum (water) humidty, RH%;
251 * Tolerant humidity, RH%;
252 * Delay before setting the error, second;
253 * Delay before clearing the error, second;
254 * Lock the error until the device is reset.
255
256 As a result of the operation of the battery protection from water, the "Water" error is generated.
257
258 Error generation conditions:
259
260 * the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
261
262 Conditions for removing the error:
263
264 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
265
266 (% class="box warningmessage" %)
267 (((
268 If there is the “Water” error,** **the **“Critical error”** is generated and **all relays open.**
269 )))
270
271 === Current sensor error ===
272
273 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.
274
275 To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
276
277 [[image:1732214146724-132.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="438" width="365"]]
278
279 In this section:
280
281 * Enable – a flag to enable the protection;
282 * Maximum voltage, V;
283 * Minimum voltage, V;
284 * Hysteresis voltage – a hysteresis value to clear the error, V;
285 * Delay before setting the error, second;
286 * Delay before clearing the error, second;
287 * Lock the error until the device is reset.
288
289 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
290
291 Error generation conditions:
292
293 * 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;
294 * 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.
295
296 Conditions for removing the error:
297
298 * 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.
299
300 (% class="box warningmessage" %)
301 (((
302 If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
303 )))
304
305 === Short circuit protection ===
306
307 The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
308
309 To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
310
311 [[image:1732214207026-822.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="528" width="371"]]
312
313 In this section:
314
315 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
316 ** Enable – a flag to enable the protection;
317 ** Maximum current, A;
318 ** Delay before setting the error, second;
319 * Delay before clearing the error, second;
320 * Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
321 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
322 * Lock the error until the device is reset.
323
324 If there is a short circuit, the "Short circuit" error is generated.
325
326 Error generation conditions:
327
328 * 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.
329
330 Conditions for removing the error:
331
332 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
333
334 (% class="box infomessage" %)
335 (((
336 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).
337 )))
338
339 === Contactor high temperature protection ===
340
341 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.
342
343 To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
344
345 [[image:1732214237851-405.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="234" width="336"]]
346
347 In this section:
348
349 * Enable – a flag to enable the protection;
350 * Maximum temperature, °C;
351 * Tolerant temperature, °C;
352 * Delay before setting the error, second;
353 * Delay before clearing the error, second;
354 * Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
355 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
356 * Lock the error until the device is reset.
357
358 If there is a contactor overheat, the "Contactor high temperature" error is generated.
359
360 Error generation conditions:
361
362 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
363
364 Conditions for removing the error:
365
366 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
367
368 (% class="box infomessage" %)
369 (((
370 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).
371 )))
372
373 === Unallowable charging protection ===
374
375 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
376
377 To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
378
379 [[image:1732214272022-547.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="312"]]
380
381 In this section:
382
383 * Enable – a flag to enable the protection;
384 * Delay before setting the error, second;
385 * Delay before clearing the error, second;
386 * Lock the error until the device is reset.
387
388 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
389
390 Error generation conditions:
391
392 * the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
393
394 Conditions for removing the error:
395
396 * the battery current is zero during the “Delay before clearing the error” time.
397
398 (% class="box infomessage" %)
399 (((
400 If there is the "Unallowable charging" error, the **discharging **relay opens.
401 )))
402
403 === Stuck contactor protection ===
404
405 The BMS Main 2.x protects contactors against sticking.
406
407 To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
408
409 [[image:1732214367207-318.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="331"]]
410
411 In this section:
412
413 * Enable – a flag to enable the protection;
414 * Delay before setting the error, second;
415 * Delay before clearing the error, second;
416 * Lock the error until the device is reset;
417
418 If there is a stuck contactor, the “Stuck contactor” error is generated.
419
420 Error generation conditions:
421
422 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
423
424 (% class="box warningmessage" %)
425 (((
426 If there is the “Stuck contactor error”, the **“Critical error” **is generated and **all relays open.**
427 )))
428
429 === Contactor feedback check ===
430
431 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]]).
432
433 To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
434
435 [[image:1732214400721-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="150" width="323"]]
436
437 In this section:
438
439 * Enable – a flag to enable the protection;
440 * Delay before setting the error, second;
441 * Delay before clearing the error, second;
442 * Lock the error until the device is reset;
443
444 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
445
446 * discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
447
448 (% class="box warningmessage" %)
449 (((
450 If there is the contactor feedback error, the **“Critical error” **is generated and **all relays open.**
451 )))
452
453 === Charging contactor cycles protection ===
454
455 The BMS protects the charging contactor against frequent switching.
456
457 To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
458
459 [[image:1732214432750-543.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="260" width="336"]]
460
461 In this section:
462
463 * Enable – a flag to enable the protection;
464 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
465 * Period – a time in which the BMS counts switchings of the charging contactor, second;
466 * Delay before setting the error, second;
467 * Delay before clearing the error, second;
468 * Lock the error until the device is reset;
469 * Cycles – a number of the charging contactor switchings made during battery operation.
470
471 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
472
473 Error generation conditions:
474
475 * 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.
476
477 Conditions for removing the error:
478
479 * the “Delay before clearing the error” time has passed since the error was generated.
480
481 (% class="box infomessage" %)
482 (((
483 If there is the "CH contactor cycles error" error, the **charging **relay opens.
484 )))
485
486 === Discharging contactor cycles protection ===
487
488 The BMS protects the discharging contactor against frequent switching.
489
490 To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
491
492 [[image:1732214468462-541.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="269" width="346"]]
493
494 In this section:
495
496 * Enable – a flag to enable the protection;
497 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
498 * Period – a time in which the BMS counts switchings of the charging contactor, second;
499 * Delay before setting the error, second;
500 * Delay before clearing the error, second;
501 * Lock the error until the device is reset;
502 * Cycles – a number of the charging contactor switchings made during battery operation.
503
504 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
505
506 Error generation conditions:
507
508 * 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.
509
510 Conditions for removing the error:
511
512 * the “Delay before clearing the error” time has passed since the error was generated.
513
514 (% class="box infomessage" %)
515 (((
516 If there is the "DCH contactor cycles error" error, the **discharging **relay opens.
517 )))
518
519 === Temperature sensor error ===
520
521 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
522
523 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
524
525 [[image:1732214501360-654.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="334"]]
526
527 In this section:
528
529 * Enable – a flag to enable the protection;
530 * Delay before setting the error, second;
531 * Delay before clearing the error, second;
532 * Lock the error until the device is reset.
533
534 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.
535
536 (% class="box warningmessage" %)
537 (((
538 If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all relays open.**
539 )))
540
541 === Logic high temperature protection ===
542
543 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
544
545 [[image:1732214545352-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="156" width="309"]]
546
547 In this section:
548
549 * Enable – a flag to enable the protection;
550 * Maximum Logic temperature, °C;
551 * Tolerant Logic temperature, °C;
552 * Lock the error until the device is reset.
553
554 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
555
556 Error generation conditions:
557
558 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
559
560 Conditions for removing the error:
561
562 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
563
564 (% class="box infomessage" %)
565 (((
566 Cell balancing is prohibited for overheated boards.
567 )))
568
569 === Logic offline protection ===
570
571 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
572
573 [[image:1732214579147-515.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="204"]]
574
575 In this section:
576
577 * Enable – a flag to enable the protection;
578 * Lock the error until the device is reset.
579
580 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
581
582 Error generation conditions:
583
584 * 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.
585
586 Conditions for removing the error:
587
588 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
589
590 (% class="box warningmessage" %)
591 (((
592 If there is the "Logic offline" error, the **“Critical error”** is generated and **all relays open.**
593 )))
594
595 === Cell count protection ===
596
597 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
598
599 [[image:1732214641606-453.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="341"]]
600
601 In this section:
602
603 * Enable – a flag to enable the protection;
604 * Cell count – a number of cells connected to the BMS;
605 * Delay before setting the error, second;
606 * Delay before clearing the error, second;
607 * Lock the error until the device is reset.
608
609 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
610
611 Error generation conditions:
612
613 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
614
615 Conditions for removing the error:
616
617 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
618
619 (% class="box warningmessage" %)
620 (((
621 If there is the "Cell count error",** **the **“Critical error”** is generated and **all relays open.**
622 )))
623
624 === Logic count protection ===
625
626 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":
627
628 [[image:1732214675358-202.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="163" width="230"]]
629
630 In this section:
631
632 * Enable – a flag to enable the protection;
633 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
634 * 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);
635 * Lock the error until the device is reset.
636
637 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.
638
639 Error generation conditions:
640
641 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
642
643 Conditions for removing the error:
644
645 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
646
647 (% class="box warningmessage" %)
648 (((
649 If there is the "Logic count error", the **“Critical error” **is generated and **all relays open.**
650 )))
651
652 === WDT protection ===
653
654 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.
655
656 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
657
658 [[image:1732214703914-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="323"]]
659
660 In this section:
661
662 * Enable – a flag to enable the protection;
663 * Delay before clearing the error, second;
664 * Lock the error until the device is reset.
665
666 Conditions for removing the error:
667
668 * the “Delay before clearing the error” time has passed from the board startup.
669
670 (% class="box warningmessage" %)
671 (((
672 If there is the "WDT reset" error, the **“Critical error”** is generated and** all relays open.**
673 )))
674
675 === Insulation monitoring ===
676
677 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
678
679 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
680
681 [[image:1732214731490-961.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="315"]]
682
683 In this section:
684
685 * Enable – a flag to enable the protection;
686 * Algorithm:
687 ** Always;
688 ** On charging;
689 ** Except charging;
690 * Delay before setting the error, second;
691 * Delay before clearing the error, second;
692 * Lock the error until the device is reset.
693
694 Error is set if corresponding discrete input is set up and it received logical zero.
695
696 (% class="box warningmessage" %)
697 (((
698 If there is the "Insulation monitoring" error, the **“Critical error”** is generated and** all relays open.**
699 )))
700
701 === Critical error parameters ===
702
703 To change the critical error parameters, select the menu "Protections → Critical error parameters":
704
705 [[image:1732214761141-983.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="158" width="348"]]
706
707 In this section:
708
709 * Enable – a flag to enable the protection;
710 * Delay before setting the error, second;
711 * Delay before clearing the error, second;
712 * Lock the error until the device is reset.
713
714 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
715
716 * “Battery cover error”;
717 * “Water”;
718 * “Logic offline”;
719 * “Cell count error”;
720 * “Logic count error”;
721 * “ADC error”;
722 * “No temp. sensors”;
723 * “Temp. sensor is shorted”;
724 * “Current sensor error”;
725 * "Stuck contactor";
726 * "Contactor feedback";
727 * “Shunt offline”;
728 * “Shunt error”;
729 * “Settings error”;
730 * “WDT reset”
731 * "Insulation monitoring".
732
733 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
734
735 (% class="box warningmessage" %)
736 (((
737 **If there is the “Critical error”, all relays open.**
738 )))
739
740 === General error parameters ===
741
742 To change the general error parameters, select the menu "Protections → General error parameters":
743
744 [[image:1732214987517-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="535" width="349"]]
745
746 In this section:
747
748 * Enable – a flag to enable the protection;
749 * Delay before setting the error, second;
750 * Delay before clearing the error, second;
751 * Lock the error until the device is reset;
752 * Errors – a section to select errors that should trigger General error.
753
754 The general error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
755
756 The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
757
758 (% class="box infomessage" %)
759 (((
760 The "General error" is //indicative //and can be linked to any discrete output of the board.
761 )))
762
763 === Low SOC signal ===
764
765 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
766
767 [[image:1732215174961-645.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="186" width="325"]]
768
769 In this section:
770
771 * Enable – a flag to enable signal generation;
772 * Minimum SOC, %;
773 * Tolerant SOC, %;
774 * Delay before setting the signal, second;
775 * Delay before clearing the signal, second;
776 * Lock the signal until the device is reset.
777
778 Signal generation conditions:
779
780 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
781
782 Conditions for clearing the signal:
783
784 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
785
786 (% class="box infomessage" %)
787 (((
788 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
789 )))
790
791 === High charging current signal ===
792
793 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
794
795 [[image:1732215211714-445.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="181" width="322"]]
796
797 In this section:
798
799 * Enable – a flag to enable signal generation;
800 * Maximum charging current, А;
801 * Tolerant charging current, А;
802 * Delay before setting the signal, second;
803 * Delay before clearing the signal, second;
804 * Lock the signal until the device is reset.
805
806 Signal generation conditions:
807
808 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
809
810 Conditions for clearing the signal:
811
812 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
813
814 (% class="box infomessage" %)
815 (((
816 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
817 )))
818
819 === Heater control ===
820
821 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
822
823 [[image:1732215252650-791.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="233" width="370"]]
824
825 In this section:
826
827 * Enable – a flag to enable heater control;
828 * Minimum cell temperature, °C;
829 * Tolerant cell temperature, °C;
830 * Delay before setting the signal, second;
831 * Delay before clearing the signal, second;
832 * Lock the signal until the device is reset;
833 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
834
835 As a result of operating the heating algorithm, the “Heater” signal is generated.
836
837 Conditions of signal generation:
838
839 * 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.
840
841 Conditions for clearing the signal:
842
843 * 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.
844
845 (% class="box infomessage" %)
846 (((
847 If there is the "Heater" signal, the **heater **relay closes and/or a signal is output to the corresponded digital output.
848 )))
849
850 === Heater (AUX) control ===
851
852 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
853
854 [[image:1732215282135-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="361"]]
855
856 In this section:
857
858 * Enable – a flag to enable heater control;
859 * Minimum cell temperature, °C;
860 * Tolerant cell temperature, °C;
861 * Delay before setting the signal, second;
862 * Delay before clearing the signal, second;
863 * Lock the signal until the device is reset;
864 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
865
866 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
867
868 Conditions of signal generation:
869
870 * 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.
871
872 Conditions for clearing the signal:
873
874 * 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.
875
876 (% class="box infomessage" %)
877 (((
878 If there is the "Heater (AUX)" signal, the **auxiliary heater **relay closes and/or a signal is output to the corresponded digital output.
879 )))
880
881 === Cooler control ===
882
883 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
884
885 [[image:1732215313977-499.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="219" width="348"]]
886
887 In this section:
888
889 * Enable – a flag to enable cooler control;
890 * Maximum cell temperature, °C;
891 * Tolerant cell temperature, °C;
892 * Delay before setting the signal, second;
893 * Delay before clearing the signal, second;
894 * Lock the signal until the device is reset;
895 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
896
897 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
898
899 Conditions of signal generation:
900
901 * 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.
902
903 Conditions for clearing the signal:
904
905 * 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.
906
907 (% class="box infomessage" %)
908 (((
909 If there is the "Cooler" signal, the **cooler **relay closes and/or a signal is output to the corresponded digital output.
910 )))
911
912 === Fault simulation ===
913
914 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
915
916 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
917
918 [[image:1732215359330-850.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="732" width="204"]]
919
920 To simulate errors, set the necessary flags and click on the "Save" button.