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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.2
edited by Admin
on 2024/12/26 15:01
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To version 28.1
edited by Admin
on 2025/02/26 12:46
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.
... ... @@ -37,21 +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 limit, calculated by the Car.
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  
49 -[[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]
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.
50 50  
52 +To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
53 +
54 +[[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
55 +
56 +* Enable – a flag to enable the protection;
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 difference, 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.
63 +
51 51  === Discharge current limit ===
52 52  
53 -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.
54 54  
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 difference, 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 +
55 55  === Undervoltage ===
56 56  
57 57  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -80,11 +80,6 @@
80 80  
81 81  * 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.
82 82  
83 -(% class="box infomessage" %)
84 -(((
85 -If there is the "Undervoltage" error, the **discharging **contactor opens.
86 -)))
87 -
88 88  === Overvoltage ===
89 89  
90 90  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -113,11 +113,6 @@
113 113  
114 114  * 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.
115 115  
116 -(% class="box infomessage" %)
117 -(((
118 -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).
119 -)))
120 -
121 121  === Low temperature ===
122 122  
123 123  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -147,12 +147,6 @@
147 147  
148 148  * 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.
149 149  
150 -(% class="box infomessage" %)
151 -(((
152 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
153 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
154 -)))
155 -
156 156  === High temperature ===
157 157  
158 158  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -182,12 +182,6 @@
182 182  
183 183  * 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.
184 184  
185 -(% class="box infomessage" %)
186 -(((
187 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
188 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
189 -)))
190 -
191 191  === Battery cover ===
192 192  
193 193  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -213,7 +213,7 @@
213 213  
214 214  (% class="box warningmessage" %)
215 215  (((
216 -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**.**
217 217  )))
218 218  
219 219  === High humidity ===
... ... @@ -275,9 +275,9 @@
275 275  
276 276  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
277 277  
278 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
279 279  (((
280 -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.
281 281  )))
282 282  
283 283  === Logic high temperature ===
... ... @@ -333,7 +333,7 @@
333 333  
334 334  (% class="box warningmessage" %)
335 335  (((
336 -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**.**
337 337  )))
338 338  
339 339  === Cell count ===
... ... @@ -362,7 +362,7 @@
362 362  
363 363  (% class="box warningmessage" %)
364 364  (((
365 -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**.**
366 366  )))
367 367  
368 368  === Logic count ===
... ... @@ -390,7 +390,7 @@
390 390  
391 391  (% class="box warningmessage" %)
392 392  (((
393 -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.
394 394  )))
395 395  
396 396  === Short circuit ===
... ... @@ -420,11 +420,6 @@
420 420  
421 421  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
422 422  
423 -(% class="box infomessage" %)
424 -(((
425 -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).
426 -)))
427 -
428 428  === High contactor temperature ===
429 429  
430 430  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.
... ... @@ -453,11 +453,6 @@
453 453  
454 454  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
455 455  
456 -(% class="box infomessage" %)
457 -(((
458 -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).
459 -)))
460 -
461 461  === Current sensor ===
462 462  
463 463  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.
... ... @@ -489,7 +489,7 @@
489 489  
490 490  (% class="box warningmessage" %)
491 491  (((
492 -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.
493 493  )))
494 494  
495 495  === Power switch ===
... ... @@ -507,13 +507,39 @@
507 507  
508 508  (% class="box warningmessage" %)
509 509  (((
510 -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.
511 511  )))
512 512  
513 513  === Power fault ===
514 514  
515 -TBA
512 +BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
516 516  
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 +* Enable – a flag to enable the protection;
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. After that BMS turns off the corresponding power supply for "Time to keep power off", then it tries to enable power again.
532 +
533 +Error is removed when the power consumption is normal during “Delay before clearing the error” time.
534 +
535 +(% class="box warningmessage" %)
536 +(((
537 +If there is the "Power fault", the **“Critical error” **is generated.
538 +)))
539 +
517 517  === Charge contactor cycles ===
518 518  
519 519  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -541,11 +541,6 @@
541 541  
542 542  * the “Delay before clearing the error” time has passed since the error was generated.
543 543  
544 -(% class="box infomessage" %)
545 -(((
546 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
547 -)))
548 -
549 549  === Discharge contactor cycles ===
550 550  
551 551  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -573,11 +573,6 @@
573 573  
574 574  * the “Delay before clearing the error” time has passed since the error was generated.
575 575  
576 -(% class="box infomessage" %)
577 -(((
578 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
579 -)))
580 -
581 581  === Temperature sensors ===
582 582  
583 583  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -597,7 +597,7 @@
597 597  
598 598  (% class="box warningmessage" %)
599 599  (((
600 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
613 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
601 601  )))
602 602  
603 603  === WDT reset ===
... ... @@ -620,7 +620,7 @@
620 620  
621 621  (% class="box warningmessage" %)
622 622  (((
623 -If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
636 +If there is the "WDT reset" error, the **“Critical error” **is generated.
624 624  )))
625 625  
626 626  === Unallowable charging ===
... ... @@ -648,11 +648,6 @@
648 648  
649 649  * the battery current is zero during the “Delay before clearing the error” time.
650 650  
651 -(% class="box infomessage" %)
652 -(((
653 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
654 -)))
655 -
656 656  === Stuck contactor ===
657 657  
658 658  The BMS Main 3 device protects contactors against sticking.
... ... @@ -676,7 +676,7 @@
676 676  
677 677  (% class="box warningmessage" %)
678 678  (((
679 -If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
687 +If there is the “Stuck contactor” error, the **“Critical error” **is generated.
680 680  )))
681 681  
682 682  === Contactor feedback ===
... ... @@ -700,7 +700,7 @@
700 700  
701 701  (% class="box warningmessage" %)
702 702  (((
703 -If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
711 +If there is the “Contactor feedback” error, the **“Critical error” **is generated.
704 704  )))
705 705  
706 706  === Insulation ===
... ... @@ -726,7 +726,7 @@
726 726  
727 727  (% class="box warningmessage" %)
728 728  (((
729 -If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
737 +If there is the “Insulation fault”, the **“Critical error”** is generated.
730 730  )))
731 731  
732 732  === HVIL ===
... ... @@ -746,15 +746,19 @@
746 746  * Source is ON: Upper current limit, A;
747 747  * Lock – a flag to block the error until the device is restarted.
748 748  
749 -If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated. Error clears if interlock loop is being restored.
757 +If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated.
750 750  
759 +Error clears if interlock loop is being restored.
760 +
751 751  (% class="box warningmessage" %)
752 752  (((
753 -If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
763 +If there is the “HVIL error”, the **“Critical error”** is generated.
754 754  )))
755 755  
756 756  === Critical error ===
757 757  
768 +Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
769 +
758 758  To change the critical error parameters, select the "Protections → Critical error" section:
759 759  
760 760  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -766,38 +766,10 @@
766 766  * Delay before clearing the error, second;
767 767  * Lock – a flag to block the error until the device is restarted.
768 768  
769 -The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
781 +The "Critical error" signal 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.
770 770  
771 -* “Battery cover error”;
772 -* “Water”;
773 -* “Logic offline”;
774 -* “Cell count error”;
775 -* “ADC error”;
776 -* “Current sensor error”;
777 -* “Shunt offline”;
778 -* “Shunt error”;
779 -* “WDT reset”
780 -* “No temp. sensors”;
781 -* “Temperature sensor shorted”;
782 -* “Stuck contactor”;
783 -* “CH contactor feedback error”;
784 -* “DCH contactor feedback error”;
785 -* “Insulation fault”;
786 -* “PCH contactor feedback error”;
787 -* “CH/DCH contactor feedback error”;
788 -* “Main contactor feedback error”;
789 -* “High voltage fault”;
790 -* “Power switch error”;
791 -* “HVIL error”l
792 -* “Power fault”.
783 +The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
793 793  
794 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
795 -
796 -(% class="box infomessage" %)
797 -(((
798 -If there is the “Critical error”, **all **contactors open.
799 -)))
800 -
801 801  === General error ===
802 802  
803 803  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -812,11 +812,11 @@
812 812  * Lock – a flag to block the error until the device is restarted;
813 813  * Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
814 814  
815 -The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
799 +The “General error”is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
816 816  
817 817  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
818 818  
819 819  (% class="box infomessage" %)
820 820  (((
821 -The state of the “General error” can be output to a discrete output or a power switch.
805 +The state of the “General error” can be assigned to a discrete output or to a power switch.
822 822  )))
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