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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.14
edited by Admin
on 2024/12/26 15:04
Change comment: There is no comment for this version
To version 23.4
edited by Admin
on 2025/02/11 14:45
Change comment: There is no comment for this version

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... ... @@ -6,6 +6,12 @@
6 6  
7 7  The BMS Main 3 device continuously monitors the state of the cells, the external environment and, when detecting abnormalities, protects the battery and system components from damage.
8 8  
9 +(% class="box errormessage" %)
10 +(((
11 +**Attention!**
12 +Behavior of contactors at different errors is configured in **corresponding contactor settings**!
13 +)))
14 +
9 9  === Overcurrent ===
10 10  
11 11  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
... ... @@ -37,28 +37,44 @@
37 37  * 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;
38 38  * the current is negative (discharging) or zero, and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
39 39  
40 -(% class="box infomessage" %)
41 -(((
42 -If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 -)))
44 -
45 45  === Charge current limit ===
46 46  
47 -The BMS Main 3 device can check the charging current with the limit based on the Charge map. If current is more than estimated maximum, "Current limit" error is generated.
48 +The BMS Main 3 device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
48 48  
50 +Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
51 +
49 49  To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
50 50  
51 51  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
52 52  
53 53  * Enable – a flag to enable the protection;
54 -* Threshold to switch from Region 1 to Region 2
55 -*
57 +* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
58 +* Region 1: Current difference – a value of maximum absolute current diffr, A;
59 +* Region 2: Current difference – a value of maximum relative current excess, A;
60 +* Delay before setting the error, millisecond;
61 +* Delay before clearing the error, second;
62 +* Lock – a flag to block the error until the device is restarted.
56 56  
57 -
58 58  === Discharge current limit ===
59 59  
60 -TBA
66 +The BMS Main 3 device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Main 3.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
61 61  
68 +Current difference is separated to two regions by the threshold value. Maximum current in Region 1 is calculated by the absolute difference, in Region 2 – by the relative difference.
69 +
70 +To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
71 +
72 +[[image:1735225942893-869.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
73 +
74 +In this section:
75 +
76 +* Enable – a flag to enable the protection;
77 +* Threshold to switch from Region 1 to Region 2 – a current value at which current excess calculation will be switched from absolute to relative difference, A;
78 +* Region 1: Current difference – a value of maximum absolute current diffr, A;
79 +* Region 2: Current difference – a value of maximum relative current excess, A;
80 +* Delay before setting the error, millisecond;
81 +* Delay before clearing the error, second;
82 +* Lock – a flag to block the error until the device is restarted.
83 +
62 62  === Undervoltage ===
63 63  
64 64  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -87,11 +87,6 @@
87 87  
88 88  * 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.
89 89  
90 -(% class="box infomessage" %)
91 -(((
92 -If there is the "Undervoltage" error, the **discharging **contactor opens.
93 -)))
94 -
95 95  === Overvoltage ===
96 96  
97 97  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -120,11 +120,6 @@
120 120  
121 121  * 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.
122 122  
123 -(% class="box infomessage" %)
124 -(((
125 -If there is the "Overvoltage" error, the **charging** contactor and **discharging **contactor open (if the “Switch off the discharging contactor on error” flag is set).
126 -)))
127 -
128 128  === Low temperature ===
129 129  
130 130  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -154,12 +154,6 @@
154 154  
155 155  * 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.
156 156  
157 -(% class="box infomessage" %)
158 -(((
159 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
160 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
161 -)))
162 -
163 163  === High temperature ===
164 164  
165 165  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -189,12 +189,6 @@
189 189  
190 190  * 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.
191 191  
192 -(% class="box infomessage" %)
193 -(((
194 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
195 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
196 -)))
197 -
198 198  === Battery cover ===
199 199  
200 200  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -220,7 +220,7 @@
220 220  
221 221  (% class="box warningmessage" %)
222 222  (((
223 -If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
223 +If there is the "Battery cover error", the **“Critical error” **is generated**.**
224 224  )))
225 225  
226 226  === High humidity ===
... ... @@ -282,9 +282,9 @@
282 282  
283 283  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
284 284  
285 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
286 286  (((
287 -If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
287 +If there is the “Water” error, the **“Critical error”** is generated.
288 288  )))
289 289  
290 290  === Logic high temperature ===
... ... @@ -340,7 +340,7 @@
340 340  
341 341  (% class="box warningmessage" %)
342 342  (((
343 -If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
343 +If there is the "Logic offline" error, the **“Critical error” **is generated**.**
344 344  )))
345 345  
346 346  === Cell count ===
... ... @@ -369,7 +369,7 @@
369 369  
370 370  (% class="box warningmessage" %)
371 371  (((
372 -If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
372 +If there is the "Cell count error", the **“Critical error” **is generated**.**
373 373  )))
374 374  
375 375  === Logic count ===
... ... @@ -397,7 +397,7 @@
397 397  
398 398  (% class="box warningmessage" %)
399 399  (((
400 -If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
400 +If there is the "Logic count error", the **“Critical error”** is generated.
401 401  )))
402 402  
403 403  === Short circuit ===
... ... @@ -427,11 +427,6 @@
427 427  
428 428  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
429 429  
430 -(% class="box infomessage" %)
431 -(((
432 -If there is the "Short circuit" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error flag” is set).
433 -)))
434 -
435 435  === High contactor temperature ===
436 436  
437 437  The BMS Main 3 device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
... ... @@ -460,11 +460,6 @@
460 460  
461 461  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
462 462  
463 -(% class="box infomessage" %)
464 -(((
465 -If there is the "High contactor temperature" error, **charging **contactor opens (if the “Switch off the charging contactor on error” flag is set) and **discharging **contactor opens (if the “Switch off the discharging contactor on error” flag is set).
466 -)))
467 -
468 468  === Current sensor ===
469 469  
470 470  The BMS Main 3 device checks the current sensor connection circuits. The circuits are checked for breakage and short-circuit to the +5 V supply line.
... ... @@ -496,7 +496,7 @@
496 496  
497 497  (% class="box warningmessage" %)
498 498  (((
499 -If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
489 +If there is the “Current sensor error”, the **“Critical error” **is generated.
500 500  )))
501 501  
502 502  === Power switch ===
... ... @@ -514,13 +514,37 @@
514 514  
515 515  (% class="box warningmessage" %)
516 516  (((
517 -If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
507 +If there is the "Power switch error", the **“Critical error” **is generated.
518 518  )))
519 519  
520 520  === Power fault ===
521 521  
522 -TBA
512 +BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
523 523  
514 +(% class="box infomessage" %)
515 +(((
516 +**Note:** this error can be configured only under** "Service" account**.
517 +)))
518 +
519 +To change the parameters of the power fault error, select the "Protections → Power fault" section:
520 +
521 +[[image:1739284154410-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
522 +
523 +In this section:
524 +
525 +* Delay before clearing the error, second;
526 +* Delay before setting the error, millisecond;
527 +* Time to keep power off, millisecond;
528 +* Delay before clearing the error, millisecond;
529 +* Lock – a flag to block the error until the device is restarted.
530 +
531 +The “Power fault” occurs when the device detects a shortage or high power consumption in power supplies mentioned above. Error is removed when the power consumption is normal during “Delay before clearing the error” time.
532 +
533 +(% class="box warningmessage" %)
534 +(((
535 +If there is the "Power fault", the **“Critical error” **is generated.
536 +)))
537 +
524 524  === Charge contactor cycles ===
525 525  
526 526  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -548,11 +548,6 @@
548 548  
549 549  * the “Delay before clearing the error” time has passed since the error was generated.
550 550  
551 -(% class="box infomessage" %)
552 -(((
553 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
554 -)))
555 -
556 556  === Discharge contactor cycles ===
557 557  
558 558  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -580,11 +580,6 @@
580 580  
581 581  * the “Delay before clearing the error” time has passed since the error was generated.
582 582  
583 -(% class="box infomessage" %)
584 -(((
585 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
586 -)))
587 -
588 588  === Temperature sensors ===
589 589  
590 590  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -604,7 +604,7 @@
604 604  
605 605  (% class="box warningmessage" %)
606 606  (((
607 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
611 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
608 608  )))
609 609  
610 610  === WDT reset ===
... ... @@ -627,7 +627,7 @@
627 627  
628 628  (% class="box warningmessage" %)
629 629  (((
630 -If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
634 +If there is the "WDT reset" error, the **“Critical error” **is generated.
631 631  )))
632 632  
633 633  === Unallowable charging ===
... ... @@ -655,11 +655,6 @@
655 655  
656 656  * the battery current is zero during the “Delay before clearing the error” time.
657 657  
658 -(% class="box infomessage" %)
659 -(((
660 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
661 -)))
662 -
663 663  === Stuck contactor ===
664 664  
665 665  The BMS Main 3 device protects contactors against sticking.
... ... @@ -683,7 +683,7 @@
683 683  
684 684  (% class="box warningmessage" %)
685 685  (((
686 -If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
685 +If there is the “Stuck contactor” error, the **“Critical error” **is generated.
687 687  )))
688 688  
689 689  === Contactor feedback ===
... ... @@ -707,7 +707,7 @@
707 707  
708 708  (% class="box warningmessage" %)
709 709  (((
710 -If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
709 +If there is the “Contactor feedback” error, the **“Critical error” **is generated.
711 711  )))
712 712  
713 713  === Insulation ===
... ... @@ -733,7 +733,7 @@
733 733  
734 734  (% class="box warningmessage" %)
735 735  (((
736 -If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
735 +If there is the “Insulation fault”, the **“Critical error”** is generated.
737 737  )))
738 738  
739 739  === HVIL ===
... ... @@ -757,11 +757,13 @@
757 757  
758 758  (% class="box warningmessage" %)
759 759  (((
760 -If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
759 +If there is the “HVIL error”, the **“Critical error”** is generated.
761 761  )))
762 762  
763 763  === Critical error ===
764 764  
764 +Some of the errors are system critical. A separate signal named "Critical error" indicates a system misbehaviour.
765 +
765 765  To change the critical error parameters, select the "Protections → Critical error" section:
766 766  
767 767  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -773,38 +773,10 @@
773 773  * Delay before clearing the error, second;
774 774  * Lock – a flag to block the error until the device is restarted.
775 775  
776 -The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
777 +The "Critical error" flag is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.1\. Battery controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time:
777 777  
778 -* “Battery cover error”;
779 -* “Water”;
780 -* “Logic offline”;
781 -* “Cell count error”;
782 -* “ADC error”;
783 -* “Current sensor error”;
784 -* “Shunt offline”;
785 -* “Shunt error”;
786 -* “WDT reset”
787 -* “No temp. sensors”;
788 -* “Temperature sensor shorted”;
789 -* “Stuck contactor”;
790 -* “CH contactor feedback error”;
791 -* “DCH contactor feedback error”;
792 -* “Insulation fault”;
793 -* “PCH contactor feedback error”;
794 -* “CH/DCH contactor feedback error”;
795 -* “Main contactor feedback error”;
796 -* “High voltage fault”;
797 -* “Power switch error”;
798 -* “HVIL error”l
799 -* “Power fault”.
779 +The “Critical error” flag is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
800 800  
801 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
802 -
803 -(% class="box infomessage" %)
804 -(((
805 -If there is the “Critical error”, **all **contactors open.
806 -)))
807 -
808 808  === General error ===
809 809  
810 810  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -825,5 +825,5 @@
825 825  
826 826  (% class="box infomessage" %)
827 827  (((
828 -The state of the “General error” can be output to a discrete output or a power switch.
801 +The state of the “General error” can be assigned to a discrete output or to a power switch.
829 829  )))
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