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Changes for page 3.4 Protections

Last modified by Admin on 2025/08/22 14:36
From version 35.1
edited by Admin
on 2025/08/22 14:06
Change comment: Uploaded new attachment "1755871582533-550.png", version {1}
To version 16.14
edited by Admin
on 2024/12/26 15:04
Change comment: There is no comment for this version

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Content
... ... @@ -6,12 +6,6 @@
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 -
15 15  === Overcurrent ===
16 16  
17 17  The BMS Main 3 device performs the overcurrent protection depending on current sensor values.
... ... @@ -43,44 +43,28 @@
43 43  * 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;
44 44  * 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.
45 45  
40 +(% class="box infomessage" %)
41 +(((
42 +If there is the "Overcurrent" error, the **charging **and **discharging **contactors open.
43 +)))
44 +
46 46  === Charge current limit ===
47 47  
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.
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.
49 49  
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 -
52 52  To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
53 53  
54 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 55  
56 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.
54 +* Threshold to switch from Region 1 to Region 2
55 +*
63 63  
57 +
64 64  === Discharge current limit ===
65 65  
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.
60 +TBA
67 67  
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 -
84 84  === Undervoltage ===
85 85  
86 86  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -94,7 +94,7 @@
94 94  * Enable – a flag to enable the protection;
95 95  * Minimum cell voltage, V;
96 96  * Tolerant cell voltage, V;
97 -* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
75 +* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
98 98  * Delay before setting the error, millisecond;
99 99  * Delay before clearing the error, second;
100 100  * Lock – a flag to block the error until the device is restarted.
... ... @@ -109,6 +109,11 @@
109 109  
110 110  * 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.
111 111  
90 +(% class="box infomessage" %)
91 +(((
92 +If there is the "Undervoltage" error, the **discharging **contactor opens.
93 +)))
94 +
112 112  === Overvoltage ===
113 113  
114 114  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -122,7 +122,7 @@
122 122  * Enable – a flag to enable the protection;
123 123  * Maximum cell voltage, V;
124 124  * Tolerant cell voltage, V;
125 -* Check the open circuit voltage instead of the actual voltage – a flag to use the U,,ocv,, (corrected due to current and cell resistance) cell voltage;
108 +* Check the open circuit voltage instead of the actual voltage – a flag to enable the check of voltage correction due to current and cell resistance;
126 126  * Delay before setting the error, millisecond;
127 127  * Delay before clearing the error, second;
128 128  * Lock – a flag to block the error until the device is restarted.
... ... @@ -137,6 +137,11 @@
137 137  
138 138  * 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.
139 139  
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 +
140 140  === Low temperature ===
141 141  
142 142  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -166,6 +166,12 @@
166 166  
167 167  * 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.
168 168  
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 +
169 169  === High temperature ===
170 170  
171 171  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -195,6 +195,12 @@
195 195  
196 196  * 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.
197 197  
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**.**
223 +If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
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 warningmessage" %)
285 +(% class="box infomessage" %)
286 286  (((
287 -If there is the “Water” error, the **“Critical error”** is generated.
287 +If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
288 288  )))
289 289  
290 290  === Logic high temperature ===
... ... @@ -321,14 +321,11 @@
321 321  
322 322  To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
323 323  
324 -[[image:1755871522789-489.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
324 +[[image:1733328399416-818.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="86" width="800"]]
325 325  
326 -
327 327  In this section:
328 328  
329 329  * Enable – a flag to enable the protection;
330 -* Delay before setting the error, second;
331 -* Delay before clearing the error, second;
332 332  * Lock – lock the error until the device is reset.
333 333  
334 334  As a result of the protection from loss of communication with BMS Logic devices, the "Logic offline" error is generated.
... ... @@ -343,7 +343,7 @@
343 343  
344 344  (% class="box warningmessage" %)
345 345  (((
346 -If there is the "Logic offline" error, the **“Critical error” **is generated**.**
343 +If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
347 347  )))
348 348  
349 349  === Cell count ===
... ... @@ -372,7 +372,7 @@
372 372  
373 373  (% class="box warningmessage" %)
374 374  (((
375 -If there is the "Cell count error", the **“Critical error” **is generated**.**
372 +If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
376 376  )))
377 377  
378 378  === Logic count ===
... ... @@ -400,7 +400,7 @@
400 400  
401 401  (% class="box warningmessage" %)
402 402  (((
403 -If there is the "Logic count error", the **“Critical error”** is generated.
400 +If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
404 404  )))
405 405  
406 406  === Short circuit ===
... ... @@ -430,6 +430,11 @@
430 430  
431 431  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
432 432  
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 +
433 433  === High contactor temperature ===
434 434  
435 435  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.
... ... @@ -458,6 +458,11 @@
458 458  
459 459  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
460 460  
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 +
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.
499 +If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
493 493  )))
494 494  
495 495  === Power switch ===
... ... @@ -507,39 +507,13 @@
507 507  
508 508  (% class="box warningmessage" %)
509 509  (((
510 -If there is the "Power switch error", the **“Critical error” **is generated.
517 +If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
511 511  )))
512 512  
513 513  === Power fault ===
514 514  
515 -BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
522 +TBA
516 516  
517 -(% class="box infomessage" %)
518 -(((
519 -**Note:** this error can be configured only under** "Service" account**.
520 -)))
521 -
522 -To change the parameters of the power fault error, select the "Protections → Power fault" section:
523 -
524 -[[image:1739284154410-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
525 -
526 -In this section:
527 -
528 -* Enable – a flag to enable the protection;
529 -* Delay before setting the error, millisecond;
530 -* Time to keep power off, millisecond;
531 -* Delay before clearing the error, millisecond;
532 -* Lock – a flag to block the error until the device is restarted.
533 -
534 -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.
535 -
536 -Error is removed when the power consumption is normal during “Delay before clearing the error” time.
537 -
538 -(% class="box warningmessage" %)
539 -(((
540 -If there is the "Power fault", the **“Critical error” **is generated.
541 -)))
542 -
543 543  === Charge contactor cycles ===
544 544  
545 545  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -567,6 +567,11 @@
567 567  
568 568  * the “Delay before clearing the error” time has passed since the error was generated.
569 569  
551 +(% class="box infomessage" %)
552 +(((
553 +If there is the "CH contactor cycles error" error, the **charging **contactor opens.
554 +)))
555 +
570 570  === Discharge contactor cycles ===
571 571  
572 572  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -594,6 +594,11 @@
594 594  
595 595  * the “Delay before clearing the error” time has passed since the error was generated.
596 596  
583 +(% class="box infomessage" %)
584 +(((
585 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
586 +)))
587 +
597 597  === Temperature sensors ===
598 598  
599 599  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -613,7 +613,7 @@
613 613  
614 614  (% class="box warningmessage" %)
615 615  (((
616 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
607 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
617 617  )))
618 618  
619 619  === WDT reset ===
... ... @@ -636,7 +636,7 @@
636 636  
637 637  (% class="box warningmessage" %)
638 638  (((
639 -If there is the "WDT reset" error, the **“Critical error” **is generated.
630 +If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
640 640  )))
641 641  
642 642  === Unallowable charging ===
... ... @@ -664,6 +664,11 @@
664 664  
665 665  * the battery current is zero during the “Delay before clearing the error” time.
666 666  
658 +(% class="box infomessage" %)
659 +(((
660 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
661 +)))
662 +
667 667  === Stuck contactor ===
668 668  
669 669  The BMS Main 3 device protects contactors against sticking.
... ... @@ -687,7 +687,7 @@
687 687  
688 688  (% class="box warningmessage" %)
689 689  (((
690 -If there is the “Stuck contactor” error, the **“Critical error” **is generated.
686 +If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
691 691  )))
692 692  
693 693  === Contactor feedback ===
... ... @@ -711,7 +711,7 @@
711 711  
712 712  (% class="box warningmessage" %)
713 713  (((
714 -If there is the “Contactor feedback” error, the **“Critical error” **is generated.
710 +If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
715 715  )))
716 716  
717 717  === Insulation ===
... ... @@ -737,7 +737,7 @@
737 737  
738 738  (% class="box warningmessage" %)
739 739  (((
740 -If there is the “Insulation fault”, the **“Critical error”** is generated.
736 +If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
741 741  )))
742 742  
743 743  === HVIL ===
... ... @@ -757,19 +757,15 @@
757 757  * Source is ON: Upper current limit, A;
758 758  * Lock – a flag to block the error until the device is restarted.
759 759  
760 -If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated.
756 +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.
761 761  
762 -Error clears if interlock loop is being restored.
763 -
764 764  (% class="box warningmessage" %)
765 765  (((
766 -If there is the “HVIL error”, the **“Critical error”** is generated.
760 +If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
767 767  )))
768 768  
769 769  === Critical error ===
770 770  
771 -Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
772 -
773 773  To change the critical error parameters, select the "Protections → Critical error" section:
774 774  
775 775  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -781,10 +781,38 @@
781 781  * Delay before clearing the error, second;
782 782  * Lock – a flag to block the error until the device is restarted.
783 783  
784 -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.
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:
785 785  
786 -The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
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”.
787 787  
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 +
788 788  === General error ===
789 789  
790 790  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -799,11 +799,11 @@
799 799  * Lock – a flag to block the error until the device is restarted;
800 800  * Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
801 801  
802 -The “General error”is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
822 +The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
803 803  
804 804  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
805 805  
806 806  (% class="box infomessage" %)
807 807  (((
808 -The state of the “General error” can be assigned to a discrete output or to a power switch.
828 +The state of the “General error” can be output to a discrete output or a power switch.
809 809  )))
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