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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 8.4
edited by Admin
on 2024/12/26 14:45
Change comment: There is no comment for this version
To version 29.1
edited by Admin
on 2025/04/09 12:19
Change comment: There is no comment for this version

Summary

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Content
... ... @@ -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.
... ... @@ -12,7 +12,7 @@
12 12  
13 13  To change the overcurrent protection of the battery, select the "Protections → Overcurrent" section:
14 14  
15 -[[image:1733328382376-958.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
21 +[[image:1735224601506-488.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
16 16  
17 17  In this section:
18 18  
... ... @@ -37,19 +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 -TBA
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 +
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 +
49 49  === Discharge current limit ===
50 50  
51 -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.
52 52  
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 +
53 53  === Undervoltage ===
54 54  
55 55  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -63,7 +63,7 @@
63 63  * Enable – a flag to enable the protection;
64 64  * Minimum cell voltage, V;
65 65  * Tolerant cell voltage, V;
66 -* 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;
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;
67 67  * Delay before setting the error, millisecond;
68 68  * Delay before clearing the error, second;
69 69  * Lock – a flag to block the error until the device is restarted.
... ... @@ -78,11 +78,6 @@
78 78  
79 79  * 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.
80 80  
81 -(% class="box infomessage" %)
82 -(((
83 -If there is the "Undervoltage" error, the **discharging **contactor opens.
84 -)))
85 -
86 86  === Overvoltage ===
87 87  
88 88  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -89,7 +89,7 @@
89 89  
90 90  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
91 91  
92 -[[image:1733328382382-607.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
118 +[[image:1735224377252-473.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="114" width="800"]]
93 93  
94 94  In this section:
95 95  
... ... @@ -96,10 +96,9 @@
96 96  * Enable – a flag to enable the protection;
97 97  * Maximum cell voltage, V;
98 98  * Tolerant cell voltage, V;
99 -* 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;
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;
100 100  * Delay before setting the error, millisecond;
101 101  * Delay before clearing the error, second;
102 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
103 103  * Lock – a flag to block the error until the device is restarted.
104 104  
105 105  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
... ... @@ -112,11 +112,6 @@
112 112  
113 113  * 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.
114 114  
115 -(% class="box infomessage" %)
116 -(((
117 -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).
118 -)))
119 -
120 120  === Low temperature ===
121 121  
122 122  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -146,12 +146,6 @@
146 146  
147 147  * 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.
148 148  
149 -(% class="box infomessage" %)
150 -(((
151 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
152 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
153 -)))
154 -
155 155  === High temperature ===
156 156  
157 157  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -181,12 +181,6 @@
181 181  
182 182  * 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.
183 183  
184 -(% class="box infomessage" %)
185 -(((
186 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
187 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
188 -)))
189 -
190 190  === Battery cover ===
191 191  
192 192  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -212,7 +212,7 @@
212 212  
213 213  (% class="box warningmessage" %)
214 214  (((
215 -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**.**
216 216  )))
217 217  
218 218  === High humidity ===
... ... @@ -274,9 +274,9 @@
274 274  
275 275  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
276 276  
277 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
278 278  (((
279 -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.
280 280  )))
281 281  
282 282  === Logic high temperature ===
... ... @@ -332,7 +332,7 @@
332 332  
333 333  (% class="box warningmessage" %)
334 334  (((
335 -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**.**
336 336  )))
337 337  
338 338  === Cell count ===
... ... @@ -361,7 +361,7 @@
361 361  
362 362  (% class="box warningmessage" %)
363 363  (((
364 -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**.**
365 365  )))
366 366  
367 367  === Logic count ===
... ... @@ -389,7 +389,7 @@
389 389  
390 390  (% class="box warningmessage" %)
391 391  (((
392 -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.
393 393  )))
394 394  
395 395  === Short circuit ===
... ... @@ -398,7 +398,7 @@
398 398  
399 399  To change the protection parameters from short circuit, select the "Protections → Short circuit" section:
400 400  
401 -[[image:1733328415733-309.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="210" width="800"]]
409 +[[image:1735224667621-969.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="153" width="800"]]
402 402  
403 403  In this section:
404 404  
... ... @@ -406,8 +406,6 @@
406 406  ** Enable – a flag to enable the protection;
407 407  ** Maximum current, A;
408 408  ** Delay before setting the error, second;
409 -* Switch off the charging contactor on error – a flag to open the charging contactor when the "Short circuit" error occurs;
410 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Short circuit" error occurs;
411 411  * Delay before clearing the error, second;
412 412  * Lock – a flag to block the error until the device is restarted.
413 413  
... ... @@ -421,11 +421,6 @@
421 421  
422 422  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
423 423  
424 -(% class="box infomessage" %)
425 -(((
426 -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).
427 -)))
428 -
429 429  === High contactor temperature ===
430 430  
431 431  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.
... ... @@ -432,7 +432,7 @@
432 432  
433 433  To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
434 434  
435 -[[image:1733328415734-986.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
436 +[[image:1735224706573-347.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="112" width="800"]]
436 436  
437 437  In this section:
438 438  
... ... @@ -441,8 +441,6 @@
441 441  * Maximum contactor temperature, °C;
442 442  * Tolerant contactor temperature, °C;
443 443  * Delay before setting the error, second;
444 -* Switch off the charging contactor on error – a flag to open the charging contactor when the "High contactor temperature" error occurs;
445 -* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "High contactor temperature" error occurs;
446 446  * Delay before clearing the error, second;
447 447  * Lock – a flag to block the error until the device is restarted.
448 448  
... ... @@ -456,11 +456,6 @@
456 456  
457 457  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
458 458  
459 -(% class="box infomessage" %)
460 -(((
461 -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).
462 -)))
463 -
464 464  === Current sensor ===
465 465  
466 466  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.
... ... @@ -492,7 +492,7 @@
492 492  
493 493  (% class="box warningmessage" %)
494 494  (((
495 -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.
496 496  )))
497 497  
498 498  === Power switch ===
... ... @@ -510,13 +510,39 @@
510 510  
511 511  (% class="box warningmessage" %)
512 512  (((
513 -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.
514 514  )))
515 515  
516 516  === Power fault ===
517 517  
518 -TBA
512 +BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
519 519  
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 +
520 520  === Charge contactor cycles ===
521 521  
522 522  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -544,11 +544,6 @@
544 544  
545 545  * the “Delay before clearing the error” time has passed since the error was generated.
546 546  
547 -(% class="box infomessage" %)
548 -(((
549 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
550 -)))
551 -
552 552  === Discharge contactor cycles ===
553 553  
554 554  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -576,11 +576,6 @@
576 576  
577 577  * the “Delay before clearing the error” time has passed since the error was generated.
578 578  
579 -(% class="box infomessage" %)
580 -(((
581 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
582 -)))
583 -
584 584  === Temperature sensors ===
585 585  
586 586  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -600,7 +600,7 @@
600 600  
601 601  (% class="box warningmessage" %)
602 602  (((
603 -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.
604 604  )))
605 605  
606 606  === WDT reset ===
... ... @@ -623,7 +623,7 @@
623 623  
624 624  (% class="box warningmessage" %)
625 625  (((
626 -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.
627 627  )))
628 628  
629 629  === Unallowable charging ===
... ... @@ -651,11 +651,6 @@
651 651  
652 652  * the battery current is zero during the “Delay before clearing the error” time.
653 653  
654 -(% class="box infomessage" %)
655 -(((
656 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
657 -)))
658 -
659 659  === Stuck contactor ===
660 660  
661 661  The BMS Main 3 device protects contactors against sticking.
... ... @@ -679,7 +679,7 @@
679 679  
680 680  (% class="box warningmessage" %)
681 681  (((
682 -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.
683 683  )))
684 684  
685 685  === Contactor feedback ===
... ... @@ -703,7 +703,7 @@
703 703  
704 704  (% class="box warningmessage" %)
705 705  (((
706 -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.
707 707  )))
708 708  
709 709  === Insulation ===
... ... @@ -729,7 +729,7 @@
729 729  
730 730  (% class="box warningmessage" %)
731 731  (((
732 -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.
733 733  )))
734 734  
735 735  === HVIL ===
... ... @@ -738,22 +738,30 @@
738 738  
739 739  To change the HVIL measurement parameters, select the "Protections → HVIL" section:
740 740  
741 -[[image:1733328487099-371.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="85" width="800"]]
746 +[[image:1735224839441-185.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
742 742  
743 743  In this section:
744 744  
745 745  * Enable – a flag to enable the protection;
751 +* Source is OFF: Lower current limit, A;
752 +* Source is OFF: Upper current limit, A;
753 +* Source is ON: Lower current limit, A;
754 +* Source is ON: Upper current limit, A;
746 746  * Lock – a flag to block the error until the device is restarted.
747 747  
748 -If interlock loop breaks, 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.
749 749  
759 +Error clears if interlock loop is being restored.
760 +
750 750  (% class="box warningmessage" %)
751 751  (((
752 -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.
753 753  )))
754 754  
755 755  === Critical error ===
756 756  
768 +Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
769 +
757 757  To change the critical error parameters, select the "Protections → Critical error" section:
758 758  
759 759  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -765,43 +765,15 @@
765 765  * Delay before clearing the error, second;
766 766  * Lock – a flag to block the error until the device is restarted.
767 767  
768 -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.
769 769  
770 -* “Battery cover error”;
771 -* “Water”;
772 -* “Logic offline”;
773 -* “Cell count error”;
774 -* “ADC error”;
775 -* “Current sensor error”;
776 -* “Shunt offline”;
777 -* “Shunt error”;
778 -* “WDT reset”
779 -* “No temp. sensors”;
780 -* “Temperature sensor shorted”;
781 -* “Stuck contactor”;
782 -* “CH contactor feedback error”;
783 -* “DCH contactor feedback error”;
784 -* “Insulation fault”;
785 -* “PCH contactor feedback error”;
786 -* “CH/DCH contactor feedback error”;
787 -* “Main contactor feedback error”;
788 -* “High voltage fault”;
789 -* “Power switch error”;
790 -* “HVIL error”l
791 -* “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.
792 792  
793 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
794 -
795 -(% class="box infomessage" %)
796 -(((
797 -If there is the “Critical error”, **all **contactors open.
798 -)))
799 -
800 800  === General error ===
801 801  
802 802  To change the general error parameters, select the "Protections → Critical error" section:
803 803  
804 -[[image:1733328487101-216.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="262" width="800"]]
789 +[[image:1735224942262-497.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
805 805  
806 806  In this section:
807 807  
... ... @@ -809,13 +809,13 @@
809 809  * Delay before setting the error, millisecond;
810 810  * Delay before clearing the error, second;
811 811  * Lock – a flag to block the error until the device is restarted;
812 -* Check: <error> – a flags to enable check of corresponding errors.
797 +* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
813 813  
814 -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.
815 815  
816 816  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
817 817  
818 818  (% class="box infomessage" %)
819 819  (((
820 -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.
821 821  )))
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