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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.18
edited by Admin
on 2024/12/26 15:05
Change comment: There is no comment for this version
To version 24.1
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.
... ... @@ -37,15 +37,11 @@
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 if the charging current exceeds the estimated limit based on the Charge map . If current is more than calculated 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.
49 49  
50 50  To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
51 51  
... ... @@ -52,14 +52,33 @@
52 52  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
53 53  
54 54  * Enable – a flag to enable the protection;
55 -* Threshold to switch from Region 1 to Region 2
56 -*
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.
57 57  
58 -
59 59  === Discharge current limit ===
60 60  
61 -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.
62 62  
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 +
63 63  === Undervoltage ===
64 64  
65 65  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -88,11 +88,6 @@
88 88  
89 89  * 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.
90 90  
91 -(% class="box infomessage" %)
92 -(((
93 -If there is the "Undervoltage" error, the **discharging **contactor opens.
94 -)))
95 -
96 96  === Overvoltage ===
97 97  
98 98  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -121,11 +121,6 @@
121 121  
122 122  * 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.
123 123  
124 -(% class="box infomessage" %)
125 -(((
126 -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).
127 -)))
128 -
129 129  === Low temperature ===
130 130  
131 131  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -155,12 +155,6 @@
155 155  
156 156  * 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.
157 157  
158 -(% class="box infomessage" %)
159 -(((
160 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
161 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
162 -)))
163 -
164 164  === High temperature ===
165 165  
166 166  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -190,12 +190,6 @@
190 190  
191 191  * 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.
192 192  
193 -(% class="box infomessage" %)
194 -(((
195 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
196 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
197 -)))
198 -
199 199  === Battery cover ===
200 200  
201 201  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -221,7 +221,7 @@
221 221  
222 222  (% class="box warningmessage" %)
223 223  (((
224 -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**.**
225 225  )))
226 226  
227 227  === High humidity ===
... ... @@ -283,9 +283,9 @@
283 283  
284 284  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
285 285  
286 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
287 287  (((
288 -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.
289 289  )))
290 290  
291 291  === Logic high temperature ===
... ... @@ -341,7 +341,7 @@
341 341  
342 342  (% class="box warningmessage" %)
343 343  (((
344 -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**.**
345 345  )))
346 346  
347 347  === Cell count ===
... ... @@ -370,7 +370,7 @@
370 370  
371 371  (% class="box warningmessage" %)
372 372  (((
373 -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**.**
374 374  )))
375 375  
376 376  === Logic count ===
... ... @@ -398,7 +398,7 @@
398 398  
399 399  (% class="box warningmessage" %)
400 400  (((
401 -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.
402 402  )))
403 403  
404 404  === Short circuit ===
... ... @@ -428,11 +428,6 @@
428 428  
429 429  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
430 430  
431 -(% class="box infomessage" %)
432 -(((
433 -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).
434 -)))
435 -
436 436  === High contactor temperature ===
437 437  
438 438  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.
... ... @@ -461,11 +461,6 @@
461 461  
462 462  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
463 463  
464 -(% class="box infomessage" %)
465 -(((
466 -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).
467 -)))
468 -
469 469  === Current sensor ===
470 470  
471 471  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.
... ... @@ -497,7 +497,7 @@
497 497  
498 498  (% class="box warningmessage" %)
499 499  (((
500 -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.
501 501  )))
502 502  
503 503  === Power switch ===
... ... @@ -515,13 +515,37 @@
515 515  
516 516  (% class="box warningmessage" %)
517 517  (((
518 -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.
519 519  )))
520 520  
521 521  === Power fault ===
522 522  
523 -TBA
512 +BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
524 524  
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 +
525 525  === Charge contactor cycles ===
526 526  
527 527  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -549,11 +549,6 @@
549 549  
550 550  * the “Delay before clearing the error” time has passed since the error was generated.
551 551  
552 -(% class="box infomessage" %)
553 -(((
554 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
555 -)))
556 -
557 557  === Discharge contactor cycles ===
558 558  
559 559  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -581,11 +581,6 @@
581 581  
582 582  * the “Delay before clearing the error” time has passed since the error was generated.
583 583  
584 -(% class="box infomessage" %)
585 -(((
586 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
587 -)))
588 -
589 589  === Temperature sensors ===
590 590  
591 591  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -605,7 +605,7 @@
605 605  
606 606  (% class="box warningmessage" %)
607 607  (((
608 -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.
609 609  )))
610 610  
611 611  === WDT reset ===
... ... @@ -628,7 +628,7 @@
628 628  
629 629  (% class="box warningmessage" %)
630 630  (((
631 -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.
632 632  )))
633 633  
634 634  === Unallowable charging ===
... ... @@ -656,11 +656,6 @@
656 656  
657 657  * the battery current is zero during the “Delay before clearing the error” time.
658 658  
659 -(% class="box infomessage" %)
660 -(((
661 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
662 -)))
663 -
664 664  === Stuck contactor ===
665 665  
666 666  The BMS Main 3 device protects contactors against sticking.
... ... @@ -684,7 +684,7 @@
684 684  
685 685  (% class="box warningmessage" %)
686 686  (((
687 -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.
688 688  )))
689 689  
690 690  === Contactor feedback ===
... ... @@ -708,7 +708,7 @@
708 708  
709 709  (% class="box warningmessage" %)
710 710  (((
711 -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.
712 712  )))
713 713  
714 714  === Insulation ===
... ... @@ -734,7 +734,7 @@
734 734  
735 735  (% class="box warningmessage" %)
736 736  (((
737 -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.
738 738  )))
739 739  
740 740  === HVIL ===
... ... @@ -758,11 +758,13 @@
758 758  
759 759  (% class="box warningmessage" %)
760 760  (((
761 -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.
762 762  )))
763 763  
764 764  === Critical error ===
765 765  
764 +Some of the errors are system critical. A separate signal named "Critical error" indicates a system misbehaviour.
765 +
766 766  To change the critical error parameters, select the "Protections → Critical error" section:
767 767  
768 768  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -774,38 +774,10 @@
774 774  * Delay before clearing the error, second;
775 775  * Lock – a flag to block the error until the device is restarted.
776 776  
777 -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:
778 778  
779 -* “Battery cover error”;
780 -* “Water”;
781 -* “Logic offline”;
782 -* “Cell count error”;
783 -* “ADC error”;
784 -* “Current sensor error”;
785 -* “Shunt offline”;
786 -* “Shunt error”;
787 -* “WDT reset”
788 -* “No temp. sensors”;
789 -* “Temperature sensor shorted”;
790 -* “Stuck contactor”;
791 -* “CH contactor feedback error”;
792 -* “DCH contactor feedback error”;
793 -* “Insulation fault”;
794 -* “PCH contactor feedback error”;
795 -* “CH/DCH contactor feedback error”;
796 -* “Main contactor feedback error”;
797 -* “High voltage fault”;
798 -* “Power switch error”;
799 -* “HVIL error”l
800 -* “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.
801 801  
802 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
803 -
804 -(% class="box infomessage" %)
805 -(((
806 -If there is the “Critical error”, **all **contactors open.
807 -)))
808 -
809 809  === General error ===
810 810  
811 811  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -826,5 +826,5 @@
826 826  
827 827  (% class="box infomessage" %)
828 828  (((
829 -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.
830 830  )))
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