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Changes for page 3.4 Protections

Last modified by Admin on 2025/11/10 11:52
From version 42.2
edited by Admin
on 2025/10/14 10:21
Change comment: There is no comment for this version
To version 16.46
edited by Admin
on 2024/12/26 15:11
Change comment: There is no comment for this version

Summary

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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.
... ... @@ -43,9 +43,14 @@
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 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.
49 49  
50 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 51  
... ... @@ -54,33 +54,18 @@
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.
56 +* Threshold to switch from Region 1 to Region 2
57 +*
63 63  
59 +
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.
62 +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.
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.
64 +Current difference is separated two 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 69  
70 -To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
66 +To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
71 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;
81 +* 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  
96 +(% class="box infomessage" %)
97 +(((
98 +If there is the "Undervoltage" error, the **discharging **contactor opens.
99 +)))
100 +
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;
114 +* 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.
... ... @@ -137,12 +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  
140 -=== Cell imbalance ===
129 +(% class="box infomessage" %)
130 +(((
131 +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).
132 +)))
141 141  
142 -The BMS Main 3 device implements battery protection from too much cell imbalance. If balancing algorithm is not enough to compensate
143 -
144 -To change the battery protection parameters from low temperature, select the "Protections → Low temperature" section:
145 -
146 146  === Low temperature ===
147 147  
148 148  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -172,6 +172,12 @@
172 172  
173 173  * 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.
174 174  
163 +(% class="box infomessage" %)
164 +(((
165 +If there is the "Low temperature (CH)" error, the **charging **contactor opens.
166 +If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
167 +)))
168 +
175 175  === High temperature ===
176 176  
177 177  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -201,6 +201,12 @@
201 201  
202 202  * 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.
203 203  
198 +(% class="box infomessage" %)
199 +(((
200 +If there is the "High temperature (CH)" error, the **charging **contactor opens.
201 +If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
202 +)))
203 +
204 204  === Battery cover ===
205 205  
206 206  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -226,7 +226,7 @@
226 226  
227 227  (% class="box warningmessage" %)
228 228  (((
229 -If there is the "Battery cover error", the **“Critical error” **is generated**.**
229 +If there is the "Battery cover error", the **“Critical error” **is generated **and all contactors open.**
230 230  )))
231 231  
232 232  === High humidity ===
... ... @@ -288,9 +288,9 @@
288 288  
289 289  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
290 290  
291 -(% class="box warningmessage" %)
291 +(% class="box infomessage" %)
292 292  (((
293 -If there is the “Water” error, the **“Critical error”** is generated.
293 +If there is the “Water” error, the **“Critical error”** is generated and **all relays open**.
294 294  )))
295 295  
296 296  === Logic high temperature ===
... ... @@ -327,14 +327,11 @@
327 327  
328 328  To change the protection parameters from loss of communication with BMS Logic devices, select the "Protections → Logic offline" section:
329 329  
330 -[[image:1755871522789-489.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
330 +[[image:1733328399416-818.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="86" width="800"]]
331 331  
332 -
333 333  In this section:
334 334  
335 335  * Enable – a flag to enable the protection;
336 -* Delay before setting the error, second;
337 -* Delay before clearing the error, second;
338 338  * Lock – lock the error until the device is reset.
339 339  
340 340  As a result of the protection from loss of communication with BMS Logic devices, the "Logic offline" error is generated.
... ... @@ -349,7 +349,7 @@
349 349  
350 350  (% class="box warningmessage" %)
351 351  (((
352 -If there is the "Logic offline" error, the **“Critical error” **is generated**.**
349 +If there is the "Logic offline" error, the **“Critical error” **is generated and **all relays open.**
353 353  )))
354 354  
355 355  === Cell count ===
... ... @@ -378,38 +378,9 @@
378 378  
379 379  (% class="box warningmessage" %)
380 380  (((
381 -If there is the "Cell count error", the **“Critical error” **is generated**.**
378 +If there is the "Cell count error", the **“Critical error” **is generated and **all relays open.**
382 382  )))
383 383  
384 -=== Temperature sensor count ===
385 -
386 -To change the protection parameters from the mismatch of the number of temperature sensors to the set value, select the "Protections → Temperature sensor count" section:
387 -
388 -[[image:1755871582533-550.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
389 -
390 -In this section:
391 -
392 -* Enable – a flag to enable the protection;
393 -* Number of cells – a number of temperature sensors connected to the BMS;
394 -* Delay before setting the error, millisecond;
395 -* Delay before clearing the error, second;
396 -* Lock – a flag to block the error until the device is restarted.
397 -
398 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
399 -
400 -Error generation conditions:
401 -
402 -* the number of temperature sensors connected to the BMS is **not equal** to the “Number of temperature sensors” value during the “Delay before setting the error” time.
403 -
404 -Conditions for removing the error:
405 -
406 -* the number of temperature sensors connected to the BMS is **equal** to the “Number of temperature sensors” value during the “Delay before clearing the error” time.
407 -
408 -(% class="box warningmessage" %)
409 -(((
410 -If there is the "T-sensor count error", the **“Critical error” **is generated**.**
411 -)))
412 -
413 413  === Logic count ===
414 414  
415 415  To change the protection parameters from the mismatch of the number of BMS Logic devices to the set value, select the "Protections → Logic count” section:
... ... @@ -435,7 +435,7 @@
435 435  
436 436  (% class="box warningmessage" %)
437 437  (((
438 -If there is the "Logic count error", the **“Critical error”** is generated.
406 +If there is the "Logic count error", the **“Critical error”** is generated and **all relays open.**
439 439  )))
440 440  
441 441  === Short circuit ===
... ... @@ -465,6 +465,11 @@
465 465  
466 466  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
467 467  
436 +(% class="box infomessage" %)
437 +(((
438 +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).
439 +)))
440 +
468 468  === High contactor temperature ===
469 469  
470 470  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.
... ... @@ -493,6 +493,11 @@
493 493  
494 494  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
495 495  
469 +(% class="box infomessage" %)
470 +(((
471 +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).
472 +)))
473 +
496 496  === Current sensor ===
497 497  
498 498  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.
... ... @@ -524,7 +524,7 @@
524 524  
525 525  (% class="box warningmessage" %)
526 526  (((
527 -If there is the “Current sensor error”, the **“Critical error” **is generated.
505 +If there is the “Current sensor error”, the **“Critical error” **is generated and **all relays open.**
528 528  )))
529 529  
530 530  === Power switch ===
... ... @@ -542,39 +542,13 @@
542 542  
543 543  (% class="box warningmessage" %)
544 544  (((
545 -If there is the "Power switch error", the **“Critical error” **is generated.
523 +If there is the "Power switch error", the **“Critical error” **is generated and **all relays open.**
546 546  )))
547 547  
548 548  === Power fault ===
549 549  
550 -BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
528 +TBA
551 551  
552 -(% class="box infomessage" %)
553 -(((
554 -**Note:** this error can be configured only under** "Service" account**.
555 -)))
556 -
557 -To change the parameters of the power fault error, select the "Protections → Power fault" section:
558 -
559 -[[image:1739284154410-676.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="96" width="800"]]
560 -
561 -In this section:
562 -
563 -* Enable – a flag to enable the protection;
564 -* Delay before setting the error, millisecond;
565 -* Time to keep power off, millisecond;
566 -* Delay before clearing the error, millisecond;
567 -* Lock – a flag to block the error until the device is restarted.
568 -
569 -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.
570 -
571 -Error is removed when the power consumption is normal during “Delay before clearing the error” time.
572 -
573 -(% class="box warningmessage" %)
574 -(((
575 -If there is the "Power fault", the **“Critical error” **is generated.
576 -)))
577 -
578 578  === Charge contactor cycles ===
579 579  
580 580  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -602,6 +602,11 @@
602 602  
603 603  * the “Delay before clearing the error” time has passed since the error was generated.
604 604  
557 +(% class="box infomessage" %)
558 +(((
559 +If there is the "CH contactor cycles error" error, the **charging **contactor opens.
560 +)))
561 +
605 605  === Discharge contactor cycles ===
606 606  
607 607  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -629,6 +629,11 @@
629 629  
630 630  * the “Delay before clearing the error” time has passed since the error was generated.
631 631  
589 +(% class="box infomessage" %)
590 +(((
591 +If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
592 +)))
593 +
632 632  === Temperature sensors ===
633 633  
634 634  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -648,7 +648,7 @@
648 648  
649 649  (% class="box warningmessage" %)
650 650  (((
651 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
613 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
652 652  )))
653 653  
654 654  === WDT reset ===
... ... @@ -671,7 +671,7 @@
671 671  
672 672  (% class="box warningmessage" %)
673 673  (((
674 -If there is the "WDT reset" error, the **“Critical error” **is generated.
636 +If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
675 675  )))
676 676  
677 677  === Unallowable charging ===
... ... @@ -699,6 +699,11 @@
699 699  
700 700  * the battery current is zero during the “Delay before clearing the error” time.
701 701  
664 +(% class="box infomessage" %)
665 +(((
666 +If there is the "Unallowable charging" error, the **discharging **contactor opens.
667 +)))
668 +
702 702  === Stuck contactor ===
703 703  
704 704  The BMS Main 3 device protects contactors against sticking.
... ... @@ -722,7 +722,7 @@
722 722  
723 723  (% class="box warningmessage" %)
724 724  (((
725 -If there is the “Stuck contactor” error, the **“Critical error” **is generated.
692 +If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
726 726  )))
727 727  
728 728  === Contactor feedback ===
... ... @@ -746,7 +746,7 @@
746 746  
747 747  (% class="box warningmessage" %)
748 748  (((
749 -If there is the “Contactor feedback” error, the **“Critical error” **is generated.
716 +If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
750 750  )))
751 751  
752 752  === Insulation ===
... ... @@ -772,7 +772,7 @@
772 772  
773 773  (% class="box warningmessage" %)
774 774  (((
775 -If there is the “Insulation fault”, the **“Critical error”** is generated.
742 +If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
776 776  )))
777 777  
778 778  === HVIL ===
... ... @@ -792,50 +792,15 @@
792 792  * Source is ON: Upper current limit, A;
793 793  * Lock – a flag to block the error until the device is restarted.
794 794  
795 -If interlock loop breaks and its current is out of the configured ranges, the “HVIL error” is generated.
762 +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.
796 796  
797 -Error clears if interlock loop is being restored.
798 -
799 799  (% class="box warningmessage" %)
800 800  (((
801 -If there is the “HVIL error”, the **“Critical error”** is generated.
766 +If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
802 802  )))
803 803  
804 -=== Battery voltage ===
805 -
806 -The BMS Main 3 allows to control the difference between sum of all cell voltages and voltage measured before the contactors.
807 -
808 -To change the voltage difference check parameters, select the "Protections → Battery voltage" section:
809 -
810 -[[image:1755871661259-633.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="100" width="800"]]
811 -
812 -In this section:
813 -
814 -* Enable – a flag to enable the protection;
815 -* Abnormal voltage difference – a maximum difference between sum of all cell voltages and voltage measured before the contactors (High voltage 1), V;
816 -* Delay before setting the error, second;
817 -* Delay before clearing the error, second;
818 -* Lock – a flag to block the error until the device is restarted.
819 -
820 -If there is a mismatch between voltages, "Battery voltage mismatch" error is generated.
821 -
822 -Error generation conditions:
823 -
824 -* difference between sum of all cell voltages and voltage measured before the contactors is **more **than "Abnormal voltage difference" value during "Delay before setting the error" time.
825 -
826 -Conditions for removing the error:
827 -
828 -* difference between sum of all cell voltages and voltage measured before the contactors is **less **than "Abnormal voltage difference" value during "Delay before clearing the error" time.
829 -
830 -(% class="box warningmessage" %)
831 -(((
832 -If there is the “Battery voltage mismatch” error, the **“Critical error”** is generated.
833 -)))
834 -
835 835  === Critical error ===
836 836  
837 -Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
838 -
839 839  To change the critical error parameters, select the "Protections → Critical error" section:
840 840  
841 841  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -847,10 +847,38 @@
847 847  * Delay before clearing the error, second;
848 848  * Lock – a flag to block the error until the device is restarted.
849 849  
850 -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.
782 +The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
851 851  
852 -The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
784 +* “Battery cover error”;
785 +* “Water”;
786 +* “Logic offline”;
787 +* “Cell count error”;
788 +* “ADC error”;
789 +* “Current sensor error”;
790 +* “Shunt offline”;
791 +* “Shunt error”;
792 +* “WDT reset”
793 +* “No temp. sensors”;
794 +* “Temperature sensor shorted”;
795 +* “Stuck contactor”;
796 +* “CH contactor feedback error”;
797 +* “DCH contactor feedback error”;
798 +* “Insulation fault”;
799 +* “PCH contactor feedback error”;
800 +* “CH/DCH contactor feedback error”;
801 +* “Main contactor feedback error”;
802 +* “High voltage fault”;
803 +* “Power switch error”;
804 +* “HVIL error”l
805 +* “Power fault”.
853 853  
807 +The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
808 +
809 +(% class="box infomessage" %)
810 +(((
811 +If there is the “Critical error”, **all **contactors open.
812 +)))
813 +
854 854  === General error ===
855 855  
856 856  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -865,11 +865,11 @@
865 865  * Lock – a flag to block the error until the device is restarted;
866 866  * Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
867 867  
868 -The “General error”is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
828 +The general error flag is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
869 869  
870 870  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
871 871  
872 872  (% class="box infomessage" %)
873 873  (((
874 -The state of the “General error” can be assigned to a discrete output or to a power switch.
834 +The state of the “General error” can be output to a discrete output or a power switch.
875 875  )))
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