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Changes for page 3.6 Battery protection

Last modified by Admin on 2025/04/09 12:25
From version 4.15
edited by Admin
on 2024/11/21 18:19
Change comment: There is no comment for this version
To version 4.23
edited by Admin
on 2024/11/21 18:28
Change comment: There is no comment for this version

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... ... @@ -352,38 +352,413 @@
352 352  
353 353  == 3.6.12 Unallowable charging protection ==
354 354  
355 +The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation.
356 +
357 +To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection":
358 +
359 +
360 +In this section:
361 +
362 +* Enable – a flag to enable the protection;
363 +* Delay before setting the error, second;
364 +* Delay before clearing the error, second;
365 +* Lock the error until the device is reset.
366 +
367 +If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated.
368 +
369 +Error generation conditions:
370 +
371 +* the charging relay is open and the battery current is not zero during the “Delay before setting the error” time.
372 +
373 +Conditions for removing the error:
374 +
375 +* the battery current is zero during the “Delay before clearing the error” time.
376 +
377 +(% class="box infomessage" %)
378 +(((
379 +If there is the "Unallowable charging" error, the discharging relay opens.
380 +)))
381 +
355 355  == 3.6.13 Stuck contactor protection ==
356 356  
384 +The BMS Main 2.x protects contactors against sticking.
385 +
386 +To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection":
387 +
388 +
389 +In this section:
390 +
391 +* Enable – a flag to enable the protection;
392 +* Delay before setting the error, second;
393 +* Delay before clearing the error, second;
394 +* Lock the error until the device is reset;
395 +
396 +If there is a stuck contactor, the “Stuck contactor” error is generated.
397 +
398 +Error generation conditions:
399 +
400 +* charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
401 +
357 357  == 3.6.14 Contactor feedback check ==
358 358  
404 +The BMS Main 2.x can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, one of the discrete input must be set as corresponding contactor feedback signal (see section Input and output signals).
405 +
406 +To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check":
407 +
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 discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions:
417 +
418 +* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
419 +
359 359  == 3.6.15 Charging contactor cycles protection ==
360 360  
422 +The BMS protects the charging contactor against frequent switching.
423 +
424 +To change the protection parameters against high frequency switching of the charging contactor, select the menu "Protections → Charging contactor cycles protection":
425 +
426 +
427 +In this section:
428 +
429 +* Enable – a flag to enable the protection;
430 +* Cycles threshold – a number of cycles in a given period, upon which the “CH contactor cycles error” is generated;
431 +* Period – a time in which the BMS counts switchings of the charging contactor, second;
432 +* Delay before setting the error, second;
433 +* Delay before clearing the error, second;
434 +* Lock the error until the device is reset;
435 +* Cycles – a number of the charging contactor switchings made during battery operation.
436 +
437 +If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
438 +
439 +Error generation conditions:
440 +
441 +* 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.
442 +
443 +Conditions for removing the error:
444 +
445 +* the “Delay before clearing the error” time has passed since the error was generated.
446 +
447 +(% class="box infomessage" %)
448 +(((
449 +If there is the "CH contactor cycles error" error, the charging relay opens.
450 +)))
451 +
361 361  == 3.6.16 Discharging contactor cycles protection ==
362 362  
454 +The BMS protects the discharging contactor against frequent switching.
455 +
456 +To change the protection parameters against high frequency switching of the discharging contactor, select the menu "Protections → Discharging contactor cycles protection":
457 +
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 “DCH 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 discharging contactor, the “DCH contactor cycles error” is generated.
470 +
471 +Error generation conditions:
472 +
473 +* 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.
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 "DCH contactor cycles error" error, the discharging relay opens.
482 +)))
483 +
363 363  == 3.6.17 Temperature sensor error ==
364 364  
486 +The board is implemented to check the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
487 +
488 +To change the protection parameters of the temperature sensors circuits, select the menu "Protections → Temperature sensor error":
489 +
490 +
491 +In this section:
492 +
493 +* Enable – a flag to enable the protection;
494 +* Delay before setting the error, second;
495 +* Delay before clearing the error, second;
496 +* Lock the error until the device is reset.
497 +
498 +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.
499 +
500 +(% class="box warningmessage" %)
501 +(((
502 +**If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the “Critical error” is generated and all relays open.**
503 +)))
504 +
365 365  == 3.6.18 Logic high temperature protection ==
366 366  
507 +To change the overheating protection parameters of BMS Logic boards, select the menu "Protections → Logic high temperature protection":
508 +
509 +
510 +In this section:
511 +
512 +* Enable – a flag to enable the protection;
513 +* Maximum Logic temperature, °C;
514 +* Tolerant Logic temperature, °C;
515 +* Lock the error until the device is reset.
516 +
517 +As a result of the operation of the protection from high temperatures of BMS Logic boards, the "Logic high temperature" is generated.
518 +
519 +Error generation conditions:
520 +
521 +* a BMS Logic board temperature is higher than the “Maximum Logic temperature” value.
522 +
523 +Conditions for removing the error:
524 +
525 +* a BMS Logic board temperature is less than the “Tolerant Logic temperature” value.
526 +
527 +(% class="box infomessage" %)
528 +(((
529 +**Cell balancing is prohibited for overheated boards.**
530 +)))
531 +
367 367  == 3.6.19 Logic offline protection ==
368 368  
534 +To change the protection parameters from loss of communication with BMS Logic boards, select the menu "Protections → Logic offline protection":
535 +
536 +
537 +In this section:
538 +
539 +* Enable – a flag to enable the protection;
540 +* Lock the error until the device is reset.
541 +
542 +As a result of the protection from loss of communication with BMS Logic boards, the "Logic offline" error is generated.
543 +
544 +Error generation conditions:
545 +
546 +* 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.
547 +
548 +Conditions for removing the error:
549 +
550 +* all connected BMS Logic boards respond to the commands of the BMS Main 2.x board.
551 +
552 +(% class="box warningmessage" %)
553 +(((
554 +**If there is the "Logic offline" error, the “Critical error” is generated and all relays open.**
555 +)))
556 +
369 369  == 3.6.20 Cell count protection ==
370 370  
559 +To change the protection parameters from the mismatch of the number of cells to the set value, select the menu "Protections → Cell count protection":
560 +
561 +
562 +In this section:
563 +
564 +* Enable – a flag to enable the protection;
565 +* Cell count – a number of cells connected to the BMS;
566 +* Delay before setting the error, second;
567 +* Delay before clearing the error, second;
568 +* Lock the error until the device is reset.
569 +
570 +As a result of the operation of the protection from the mismatch of the number of cells, the "Cell count error" is generated.
571 +
572 +Error generation conditions:
573 +
574 +* the number of cells connected to the BMS is **not equal** to the “Cell count” value during the “Delay before setting the error” time.
575 +
576 +Conditions for removing the error:
577 +
578 +* the number of cells connected to the BMS is **equal** to the “Cell count” value during the “Delay before clearing the error” time.
579 +
580 +(% class="box warningmessage" %)
581 +(((
582 +**If there is the "Cell count error", the “Critical error” is generated and all relays open.**
583 +)))
584 +
371 371  == 3.6.21 Logic count protection ==
372 372  
587 +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":
588 +
589 +
590 +In this section:
591 +
592 +* Enable – a flag to enable the protection;
593 +* Logic count – a number of BMS Logic boards connected to the BMS Main 2.x;
594 +* 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);
595 +* Lock the error until the device is reset.
596 +
597 +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.
598 +
599 +Error generation conditions:
600 +
601 +* the number of BMS Logic boards connected to the BMS Main 2.x is **not equal** to the “Logic count” value.
602 +
603 +Conditions for removing the error:
604 +
605 +* the number of BMS Logic boards connected to the BMS Main is **equal** to the “Logic count” value.
606 +
607 +(% class="box warningmessage" %)
608 +(((
609 +**If there is the "Logic count error", the “Critical error” is generated and all relays open.**
610 +)))
611 +
373 373  == 3.6.22 WDT protection ==
374 374  
614 +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.
615 +
616 +To change the parameters of the watchdog protection, select the menu "Protections → WDT protection":
617 +
618 +
619 +In this section:
620 +
621 +* Enable – a flag to enable the protection;
622 +* Delay before clearing the error, second;
623 +* Lock the error until the device is reset.
624 +
625 +Conditions for removing the error:
626 +
627 +* the “Delay before clearing the error” time has passed from the board startup.
628 +
629 +(% class="box warningmessage" %)
630 +(((
631 +**If there is the "WDT reset" error, the “Critical error” is generated and all relays open.**
632 +)))
633 +
375 375  == 3.6.23 Insulation monitoring ==
376 376  
636 +BMS Main 2.x can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
637 +
638 +To change the insulation monitoring parameters, select the menu "Protections → Insulation monitoring":
639 +
640 +
641 +In this section:
642 +
643 +* Enable – a flag to enable the protection;
644 +* Delay before setting the error, second;
645 +* Delay before clearing the error, second;
646 +* Lock the error until the device is reset.
647 +
648 +Error is set if corresponding discrete input is set up and it received logical zero.
649 +
377 377  == 3.6.24 Critical error parameters ==
378 378  
652 +To change the critical error parameters, select the menu "Protections → Critical error parameters":
653 +
654 +
655 +In this section:
656 +
657 +* Enable – a flag to enable the protection;
658 +* Delay before setting the error, second;
659 +* Delay before clearing the error, second;
660 +* Lock the error until the device is reset.
661 +
662 +The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
663 +
664 +* “Battery cover error”;
665 +* “Water”;
666 +* “Logic offline”;
667 +* “Cell count error”;
668 +* “Logic count error”;
669 +* “ADC error”;
670 +* “No temp. sensors”;
671 +* “Temp. sensor is shorted”;
672 +* “Current sensor error”;
673 +* “Shunt offline”;
674 +* “Shunt error”;
675 +* “Settings error”;
676 +* “WDT reset”.
677 +
678 +The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
679 +
680 +(% class="box warningmessage" %)
681 +(((
682 +**If there is the “Critical error”, all relays open.**
683 +)))
684 +
379 379  == 3.6.25 General error parameters ==
380 380  
381 381  == 3.6.26 Low SOC signal ==
382 382  
689 +To change the parameters of the generation a signal about low battery level, select the menu "Protections → Low SOC signal":
690 +
691 +
692 +In this section:
693 +
694 +* Enable – a flag to enable signal generation;
695 +* Minimum SOC, %;
696 +* Tolerant SOC, %;
697 +* Delay before setting the signal, second;
698 +* Delay before clearing the signal, second;
699 +* Lock the signal until the device is reset.
700 +
701 +Signal generation conditions:
702 +
703 +* the battery SOC is less than the “Minimum SOC” value during the “Delay before setting the signal” time.
704 +
705 +Conditions for clearing the signal:
706 +
707 +* the battery SOC is greater than the “Tolerant SOC” during the “Delay before clearing the signal” time.
708 +
709 +The "Low SOC signal" is //indicative //and can be linked to any discrete output of the board.
710 +
383 383  == 3.6.27 High charging current signal ==
384 384  
713 +To change the parameters of the generation high-current signal, select the menu "Protections → High charging current signal":
714 +
715 +
716 +In this section:
717 +
718 +* Enable – a flag to enable signal generation;
719 +* Maximum charging current, А;
720 +* Tolerant charging current, А;
721 +* Delay before setting the signal, second;
722 +* Delay before clearing the signal, second;
723 +* Lock the signal until the device is reset.
724 +
725 +Signal generation conditions:
726 +
727 +* the measured current is greater than the “Maximum charging current” value during the “Delay before setting the signal” time.
728 +
729 +Conditions for clearing the signal:
730 +
731 +* the measured current is less than the “Tolerant charging current” value during the “Delay before clearing the signal” time.
732 +
733 +The "High charging current" signal is //indicative //and can be linked to any discrete output of the board.
734 +
385 385  == 3.6.28 Heater control ==
386 386  
737 +To change the parameters of the heater control algorithm, select the menu "Protections → Heater control":
738 +
739 +
740 +In this section:
741 +
742 +* Enable – a flag to enable heater control;
743 +* Minimum cell temperature, °C;
744 +* Tolerant cell temperature, °C;
745 +* Delay before setting the signal, second;
746 +* Delay before clearing the signal, second;
747 +* Lock the signal until the device is reset;
748 +* Switch off the heater relay on errors (Undervoltage, Overcurrent, High temperature, Short circuit or Critical error).
749 +
750 +As a result of operating the heating algorithm, the “Heater” signal is generated.
751 +
752 +Conditions of signal generation:
753 +
754 +* 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.
755 +
756 +Conditions for clearing the signal:
757 +
758 +* 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.
759 +
760 +If there is the "Heater" signal, the heater relay closes and/or a signal is output to the corresponded digital output.
761 +
387 387  == 3.6.29 Heater (AUX) control ==
388 388  
389 389  == 3.6.30 Cooler control ==