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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: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:1732212212350-294.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="207" width="359"]]
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 * Delay before setting the error, second;
57 * Delay before clearing the error, second;
58 * Lock the error until the device is reset.
59
60 As a result of the operation of battery protection from low voltage, the "Undervoltage" error is generated.
61
62 Error generation conditions:
63
64 * 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.
65
66 Conditions for removing the error:
67
68 * 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.
69
70 (% class="box infomessage" %)
71 (((
72 If there is the "Undervoltage" error, the **discharging **relay opens.
73 )))
74
75 === Overvoltage protection ===
76
77 To change the battery protection parameters from high voltage on the cells, select the menu "Protections → Overvoltage protection":
78
79 [[image:1732212357972-295.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="218" width="338"]]
80
81 In this section:
82
83 * Enable – a flag to enable the protection;
84 * Maximum cell voltage, V;
85 * Tolerant cell voltage, V;
86 * Delay before setting the error, second;
87 * Delay before clearing the error, second;
88 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Overvoltage" error is generated;
89 * Lock the error until the device is reset.
90
91 As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
92
93 Error generation conditions:
94
95 * 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.
96
97 Conditions for removing the error:
98
99 * 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.
100
101 (% class="box infomessage" %)
102 (((
103 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).
104 )))
105
106 === Low temperature protection ===
107
108 The board implements battery protection from too low temperature.
109
110 To change the battery protection parameters from low temperature, select the menu "Protections → Low temperature protection":
111
112 [[image:1732213953083-955.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="237" width="338"]]
113
114 In this section:
115
116 * Enable – a flag to enable the protection;
117 * Minimum charging temperature, °C;
118 * Tolerant charging temperature, °C;
119 * Minimum discharging temperature, °C;
120 * Tolerant discharging temperature, °C;
121 * Delay before setting the error, second;
122 * Delay before clearing the error, second;
123 * Lock the error until the device is reset.
124
125 As a result of the operation of the battery protection from low temperature, the "Low CH temperature" or “Low DCH temperature” error is generated.
126
127 Error generation conditions:
128
129 * 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.
130
131 Conditions for removing the error:
132
133 * 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.
134
135 (% class="box infomessage" %)
136 (((
137 If there is the "Low CH temperature" error, the **charging **relay opens.
138 If there is the "Low DCH temperature" error, the **discharging **relay opens.
139 )))
140
141 === High temperature protection ===
142
143 The board implements battery protection from too high temperature.
144
145 To change the battery protection parameters from high temperature, select the menu "Protections → High temperature protection":
146
147 [[image:1732213990755-759.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="258" width="370"]]
148
149 In this section:
150
151 * Enable – a flag to enable the protection;
152 * Maximum charging temperature, °C;
153 * Tolerant charging temperature, °C;
154 * Maximum discharging temperature, °C;
155 * Tolerant discharging temperature, °C;
156 * Delay before setting the error, second;
157 * Delay before clearing the error, second;
158 * Lock the error until the device is reset.
159
160 As a result of the operation of the battery protection from high temperature, the "High CH temperature" or “High DCH temperature” error is generated.
161
162 Error generation conditions:
163
164 * 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.
165
166 Conditions for removing the error:
167
168 * 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.
169
170 (% class="box infomessage" %)
171 (((
172 If there is the "High CH temperature" error, the **charging **relay opens.
173 If there is the "High DCH temperature" error, the **discharging **relay opens.
174 )))
175
176 === Battery cover protection ===
177
178 To change the protection parameters from opening the battery cover, select the menu "Protections → Battery cover protection":
179
180 [[image:1732214030014-281.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="155" width="334"]]
181
182 In this section:
183
184 * Enable – a flag to enable the protection;
185 * Delay before setting the error, second;
186 * Delay before clearing the error, second;
187 * Lock the error until the device is reset.
188
189 As a result of the operation of the protection against opening the battery cover, the “Battery cover error” is generated.
190
191 Error generation conditions:
192
193 * there is a signal from the battery cover during the “Delay before setting the error” time.
194
195 Conditions for removing the error:
196
197 * no signal from the battery cover during the “Delay before clearing the error” time.
198
199 (% class="box warningmessage" %)
200 (((
201 If there is the "Battery cover error", the **“Critical error” **is generated and **all relays open.**
202 )))
203
204 === High humidity protection ===
205
206 The board can protect the battery from high humidity and water.
207
208 To change the protection parameters of the battery from high humidity, select the menu "Protections → High humidity protection":
209
210 [[image:1732214076060-358.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="185" width="321"]]
211
212 In this section:
213
214 * Enable – a flag to enable the protection;
215 * Maximum humidity, RH%;
216 * Tolerant humidity, RH%;
217 * Delay before setting the error, second;
218 * Delay before clearing the error, second;
219 * Lock the error until the device is reset.
220
221 As a result of the operation of the battery protection from high humidity, the "High humidity" error is generated.
222
223 Error generation conditions:
224
225 * the measured humidity is greater than “Maximum humidity” during the “Delay before setting the error” time.
226
227 Conditions for removing the error:
228
229 * the measured humidity is less than the “Tolerant humidity” during the “Delay before clearing the error” time.
230
231 (% class="box infomessage" %)
232 (((
233 If there is the "High humidity" error, no action is taken. The error is indicative.
234 )))
235
236 === Water protection ===
237
238 To change the protection parameters of the battery from water, select the menu "Protections → Water protection":
239
240 [[image:1732214111990-184.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="199" width="340"]]
241
242 In this section:
243
244 * Enable – a flag to enable the protection;
245 * Maximum (water) humidty, RH%;
246 * Tolerant humidity, RH%;
247 * Delay before setting the error, second;
248 * Delay before clearing the error, second;
249 * Lock the error until the device is reset.
250
251 As a result of the operation of the battery protection from water, the "Water" error is generated.
252
253 Error generation conditions:
254
255 * the measured humidity is greater than the “Maximum (water) humidity” value during the “Delay before setting the error” time.
256
257 Conditions for removing the error:
258
259 * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
260
261 (% class="box warningmessage" %)
262 (((
263 If there is the “Water” error,** **the **“Critical error”** is generated and **all relays open.**
264 )))
265
266 === Current sensor error ===
267
268 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.
269
270 To change the test parameters of the current sensor connection circuits, select the menu "Protections → Current sensor error":
271
272 [[image:1732214146724-132.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="438" width="365"]]
273
274 In this section:
275
276 * Enable – a flag to enable the protection;
277 * Maximum voltage, V;
278 * Minimum voltage, V;
279 * Hysteresis voltage – a hysteresis value to clear the error, V;
280 * Delay before setting the error, second;
281 * Delay before clearing the error, second;
282 * Lock the error until the device is reset.
283
284 If there is an open or short circuit connection of a current sensor, the "Current sensor error" is generated.
285
286 Error generation conditions:
287
288 * 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;
289 * 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.
290
291 Conditions for removing the error:
292
293 * 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.
294
295 (% class="box warningmessage" %)
296 (((
297 If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
298 )))
299
300 === Short circuit protection ===
301
302 The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
303
304 To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
305
306 [[image:1732214207026-822.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="528" width="371"]]
307
308 In this section:
309
310 * Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
311 ** Enable – a flag to enable the protection;
312 ** Maximum current, A;
313 ** Delay before setting the error, second;
314 * Delay before clearing the error, second;
315 * Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
316 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
317 * Lock the error until the device is reset.
318
319 If there is a short circuit, the "Short circuit" error is generated.
320
321 Error generation conditions:
322
323 * 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.
324
325 Conditions for removing the error:
326
327 * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
328
329 (% class="box infomessage" %)
330 (((
331 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).
332 )))
333
334 === Contactor high temperature protection ===
335
336 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.
337
338 To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
339
340 [[image:1732214237851-405.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="234" width="336"]]
341
342 In this section:
343
344 * Enable – a flag to enable the protection;
345 * Maximum temperature, °C;
346 * Tolerant temperature, °C;
347 * Delay before setting the error, second;
348 * Delay before clearing the error, second;
349 * Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
350 * Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
351 * Lock the error until the device is reset.
352
353 If there is a contactor overheat, the "Contactor high temperature" error is generated.
354
355 Error generation conditions:
356
357 * the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
358
359 Conditions for removing the error:
360
361 * the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
362
363 (% class="box infomessage" %)
364 (((
365 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).
366 )))
367
368 === Unallowable charging protection ===
369
370 The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
371
372 To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
373
374 [[image:1732214272022-547.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="312"]]
375
376 In this section:
377
378 * Enable – a flag to enable the protection;
379 * Delay before setting the error, second;
380 * Delay before clearing the error, second;
381 * Lock the error until the device is reset.
382
383 If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
384
385 Error generation conditions:
386
387 * the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
388
389 Conditions for removing the error:
390
391 * the battery current is zero during the “Delay before clearing the error” time.
392
393 (% class="box infomessage" %)
394 (((
395 If there is the "Unallowable charging" error, the **discharging **relay opens.
396 )))
397
398 === Stuck contactor protection ===
399
400 The BMS Main 2.x protects contactors against sticking.
401
402 To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
403
404 [[image:1732214367207-318.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="152" width="331"]]
405
406 In this section:
407
408 * Enable – a flag to enable the protection;
409 * Delay before setting the error, second;
410 * Delay before clearing the error, second;
411 * Lock the error until the device is reset;
412
413 If there is a stuck contactor, the “Stuck contactor” error is generated.
414
415 Error generation conditions:
416
417 * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
418
419 (% class="box warningmessage" %)
420 (((
421 If there is the “Stuck contactor error”, the **“Critical error” **is generated and **all relays open.**
422 )))
423
424 === Contactor feedback check ===
425
426 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]]).
427
428 To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
429
430 [[image:1732214400721-274.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="150" width="323"]]
431
432 In this section:
433
434 * Enable – a flag to enable the protection;
435 * Delay before setting the error, second;
436 * Delay before clearing the error, second;
437 * Lock the error until the device is reset;
438
439 If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
440
441 * discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
442
443 (% class="box warningmessage" %)
444 (((
445 If there is the contactor feedback error, the **“Critical error” **is generated and **all relays open.**
446 )))
447
448 === Charging contactor cycles protection ===
449
450 The BMS protects the charging contactor against frequent switching.
451
452 To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
453
454 [[image:1732214432750-543.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="260" width="336"]]
455
456 In this section:
457
458 * Enable – a flag to enable the protection;
459 * Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
460 * Period – a time in which the BMS counts switchings of the charging contactor, second;
461 * Delay before setting the error, second;
462 * Delay before clearing the error, second;
463 * Lock the error until the device is reset;
464 * Cycles – a number of the charging contactor switchings made during battery operation.
465
466 If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
467
468 Error generation conditions:
469
470 * 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.
471
472 Conditions for removing the error:
473
474 * the “Delay before clearing the error” time has passed since the error was generated.
475
476 (% class="box infomessage" %)
477 (((
478 If there is the "CH contactor cycles error" error, the **charging **relay opens.
479 )))
480
481 === Discharging contactor cycles protection ===
482
483 The BMS protects the discharging contactor against frequent switching.
484
485 To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
486
487 [[image:1732214468462-541.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="269" width="346"]]
488
489 In this section:
490
491 * Enable – a flag to enable the protection;
492 * Cycles threshold – a number of cycles in a given period, upon which the “DCH contactor cycles error” is generated;
493 * Period – a time in which the BMS counts switchings of the charging contactor, second;
494 * Delay before setting the error, second;
495 * Delay before clearing the error, second;
496 * Lock the error until the device is reset;
497 * Cycles – a number of the charging contactor switchings made during battery operation.
498
499 If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
500
501 Error generation conditions:
502
503 * 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.
504
505 Conditions for removing the error:
506
507 * the “Delay before clearing the error” time has passed since the error was generated.
508
509 (% class="box infomessage" %)
510 (((
511 If there is the "DCH contactor cycles error" error, the **discharging **relay opens.
512 )))
513
514 === Temperature sensor error ===
515
516 The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
517
518 To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
519
520 [[image:1732214501360-654.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="154" width="334"]]
521
522 In this section:
523
524 * Enable – a flag to enable the protection;
525 * Delay before setting the error, second;
526 * Delay before clearing the error, second;
527 * Lock the error until the device is reset.
528
529 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.
530
531 (% class="box warningmessage" %)
532 (((
533 If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error” **is generated and **all relays open.**
534 )))
535
536 === Logic high temperature protection ===
537
538 To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
539
540 [[image:1732214545352-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="156" width="309"]]
541
542 In this section:
543
544 * Enable – a flag to enable the protection;
545 * Maximum Logic temperature, °C;
546 * Tolerant Logic temperature, °C;
547 * Lock the error until the device is reset.
548
549 As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
550
551 Error generation conditions:
552
553 * a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
554
555 Conditions for removing the error:
556
557 * a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
558
559 (% class="box infomessage" %)
560 (((
561 Cell balancing is prohibited for overheated boards.
562 )))
563
564 === Logic offline protection ===
565
566 To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
567
568 [[image:1732214579147-515.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="107" width="204"]]
569
570 In this section:
571
572 * Enable – a flag to enable the protection;
573 * Lock the error until the device is reset.
574
575 As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
576
577 Error generation conditions:
578
579 * 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.
580
581 Conditions for removing the error:
582
583 * all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
584
585 (% class="box warningmessage" %)
586 (((
587 If there is the "Logic offline" error, the **“Critical error”** is generated and **all relays open.**
588 )))
589
590 === Cell count protection ===
591
592 To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
593
594 [[image:1732214641606-453.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="178" width="341"]]
595
596 In this section:
597
598 * Enable – a flag to enable the protection;
599 * Cell count – a number of cells connected to the BMS;
600 * Delay before setting the error, second;
601 * Delay before clearing the error, second;
602 * Lock the error until the device is reset.
603
604 As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
605
606 Error generation conditions:
607
608 * the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
609
610 Conditions for removing the error:
611
612 * the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
613
614 (% class="box warningmessage" %)
615 (((
616 If there is the "Cell count error",** **the **“Critical error”** is generated and **all relays open.**
617 )))
618
619 === Logic count protection ===
620
621 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":
622
623 [[image:1732214675358-202.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="163" width="230"]]
624
625 In this section:
626
627 * Enable – a flag to enable the protection;
628 * Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
629 * Fast scan – a flag to scan BMS Logic boards fast (boards with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
630 * Lock the error until the device is reset.
631
632 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.
633
634 Error generation conditions:
635
636 * the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
637
638 Conditions for removing the error:
639
640 * the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
641
642 (% class="box warningmessage" %)
643 (((
644 If there is the "Logic count error", the **“Critical error” **is generated and **all relays open.**
645 )))
646
647 === WDT protection ===
648
649 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.
650
651 To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
652
653 [[image:1732214703914-144.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="323"]]
654
655 In this section:
656
657 * Enable – a flag to enable the protection;
658 * Delay before clearing the error, second;
659 * Lock the error until the device is reset.
660
661 Conditions for removing the error:
662
663 * the “Delay before clearing the error” time has passed from the board startup.
664
665 (% class="box warningmessage" %)
666 (((
667 If there is the "WDT reset" error, the **“Critical error”** is generated and** all relays open.**
668 )))
669
670 === Insulation monitoring ===
671
672 BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
673
674 To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
675
676 [[image:1732214731490-961.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="162" width="315"]]
677
678 In this section:
679
680 * Enable – a flag to enable the protection;
681 * Delay before setting the error, second;
682 * Delay before clearing the error, second;
683 * Lock the error until the device is reset.
684
685 Error is set if corresponding discrete input is set up and it received logical zero.
686
687 (% class="box warningmessage" %)
688 (((
689 If there is the "Insulation monitoring" error, the **“Critical error”** is generated and** all relays open.**
690 )))
691
692 === Critical error parameters ===
693
694 To change the critical error parameters, select the menu "Protections → Critical error parameters":
695
696 [[image:1732214761141-983.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="158" width="348"]]
697
698 In this section:
699
700 * Enable – a flag to enable the protection;
701 * Delay before setting the error, second;
702 * Delay before clearing the error, second;
703 * Lock the error until the device is reset.
704
705 The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
706
707 * “Battery cover error”;
708 * “Water”;
709 * “Logic offline”;
710 * “Cell count error”;
711 * “Logic count error”;
712 * “ADC error”;
713 * “No temp. sensors”;
714 * “Temp. sensor is shorted”;
715 * “Current sensor error”;
716 * "Stuck contactor";
717 * "Contactor feedback";
718 * “Shunt offline”;
719 * “Shunt error”;
720 * “Settings error”;
721 * “WDT reset”
722 * "Insulation monitoring".
723
724 The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
725
726 (% class="box warningmessage" %)
727 (((
728 **If there is the “Critical error”, all relays open.**
729 )))
730
731 === General error parameters ===
732
733 To change the general error parameters, select the menu "Protections → General error parameters":
734
735 [[image:1732214987517-111.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="535" width="349"]]
736
737 In this section:
738
739 * Enable – a flag to enable the protection;
740 * Delay before setting the error, second;
741 * Delay before clearing the error, second;
742 * Lock the error until the device is reset;
743 * Errors – a section to select errors that should trigger General error.
744
745 The critical error flag is generated if at least one of the selected errors is generated during the “Delay before setting the error” time.
746
747 The “General error” is cleared if there are no errors from selected list during the “Delay before clearing the error” time.
748
749 (% class="box infomessage" %)
750 (((
751 The "General error" is //indicative //and can be linked to any discrete output of the board.
752 )))
753
754 === Low SOC signal ===
755
756 To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
757
758 [[image:1732215174961-645.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="186" width="325"]]
759
760 In this section:
761
762 * Enable – a flag to enable signal generation;
763 * Minimum SOC, %;
764 * Tolerant SOC, %;
765 * Delay before setting the signal, second;
766 * Delay before clearing the signal, second;
767 * Lock the signal until the device is reset.
768
769 Signal generation conditions:
770
771 * the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
772
773 Conditions for clearing the signal:
774
775 * the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
776
777 (% class="box infomessage" %)
778 (((
779 The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
780 )))
781
782 === High charging current signal ===
783
784 To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
785
786 [[image:1732215211714-445.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="181" width="322"]]
787
788 In this section:
789
790 * Enable – a flag to enable signal generation;
791 * Maximum charging current, А;
792 * Tolerant charging current, А;
793 * Delay before setting the signal, second;
794 * Delay before clearing the signal, second;
795 * Lock the signal until the device is reset.
796
797 Signal generation conditions:
798
799 * the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
800
801 Conditions for clearing the signal:
802
803 * the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
804
805 (% class="box infomessage" %)
806 (((
807 The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
808 )))
809
810 === Heater control ===
811
812 To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
813
814 [[image:1732215252650-791.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="233" width="370"]]
815
816 In this section:
817
818 * Enable – a flag to enable heater control;
819 * Minimum cell temperature, °C;
820 * Tolerant cell temperature, °C;
821 * Delay before setting the signal, second;
822 * Delay before clearing the signal, second;
823 * Lock the signal until the device is reset;
824 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
825
826 As a result of operating the heating algorithm, the “Heater” signal is generated.
827
828 Conditions of signal generation:
829
830 * 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.
831
832 Conditions for clearing the signal:
833
834 * 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.
835
836 (% class="box infomessage" %)
837 (((
838 If there is the "Heater" signal, the **heater **relay closes and/or a signal is output to the corresponded digital output.
839 )))
840
841 === Heater (AUX) control ===
842
843 To change the parameters of the auxiliary heater control algorithm, select the menu "Protections → Heater (AUX) control":
844
845 [[image:1732215282135-420.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="228" width="361"]]
846
847 In this section:
848
849 * Enable – a flag to enable heater control;
850 * Minimum cell temperature, °C;
851 * Tolerant cell temperature, °C;
852 * Delay before setting the signal, second;
853 * Delay before clearing the signal, second;
854 * Lock the signal until the device is reset;
855 * Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
856
857 As a result of operating the heating algorithm, the “Heater (AUX)” signal is generated.
858
859 Conditions of signal generation:
860
861 * 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.
862
863 Conditions for clearing the signal:
864
865 * 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.
866
867 (% class="box infomessage" %)
868 (((
869 If there is the "Heater (AUX)" signal, the **auxiliary heater **relay closes and/or a signal is output to the corresponded digital output.
870 )))
871
872 === Cooler control ===
873
874 To change the parameters of the cooler control algorithm, select the menu "Protections → Cooler control":
875
876 [[image:1732215313977-499.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="219" width="348"]]
877
878 In this section:
879
880 * Enable – a flag to enable cooler control;
881 * Maximum cell temperature, °C;
882 * Tolerant cell temperature, °C;
883 * Delay before setting the signal, second;
884 * Delay before clearing the signal, second;
885 * Lock the signal until the device is reset;
886 * Switch off the cooler relay on errors (Undervoltage, Overcurrent, Low temperature, Short circuit or Critical error).
887
888 As a result of operating the cooling algorithm, the "Cooler" signal is generated.
889
890 Conditions of signal generation:
891
892 * 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.
893
894 Conditions for clearing the signal:
895
896 * 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.
897
898 (% class="box infomessage" %)
899 (((
900 If there is the "Cooler" signal, the **cooler **relay closes and/or a signal is output to the corresponded digital output.
901 )))
902
903 === Fault simulation ===
904
905 The board provides the ability to manually generate error flags bypassing the protection algorithms. This functionality is intended for commissioning.
906
907 To simulate battery and BMS errors, select the menu "Protections → Fault simulation":
908
909 [[image:1732215359330-850.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="732" width="204"]]
910
911 To simulate errors, set the necessary flags and click on the "Save" button.