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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 13.2
edited by Admin
on 2024/12/26 14:55
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

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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.
... ... @@ -37,19 +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.
... ... @@ -96,7 +96,7 @@
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;
102 102  * Lock – a flag to block the error until the device is restarted.
... ... @@ -111,11 +111,6 @@
111 111  
112 112  * 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.
113 113  
114 -(% class="box infomessage" %)
115 -(((
116 -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).
117 -)))
118 -
119 119  === Low temperature ===
120 120  
121 121  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -145,12 +145,6 @@
145 145  
146 146  * 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.
147 147  
148 -(% class="box infomessage" %)
149 -(((
150 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
151 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
152 -)))
153 -
154 154  === High temperature ===
155 155  
156 156  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -180,12 +180,6 @@
180 180  
181 181  * 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.
182 182  
183 -(% class="box infomessage" %)
184 -(((
185 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
186 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
187 -)))
188 -
189 189  === Battery cover ===
190 190  
191 191  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -211,7 +211,7 @@
211 211  
212 212  (% class="box warningmessage" %)
213 213  (((
214 -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**.**
215 215  )))
216 216  
217 217  === High humidity ===
... ... @@ -273,9 +273,9 @@
273 273  
274 274  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
275 275  
276 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
277 277  (((
278 -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.
279 279  )))
280 280  
281 281  === Logic high temperature ===
... ... @@ -331,7 +331,7 @@
331 331  
332 332  (% class="box warningmessage" %)
333 333  (((
334 -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**.**
335 335  )))
336 336  
337 337  === Cell count ===
... ... @@ -360,7 +360,7 @@
360 360  
361 361  (% class="box warningmessage" %)
362 362  (((
363 -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**.**
364 364  )))
365 365  
366 366  === Logic count ===
... ... @@ -388,7 +388,7 @@
388 388  
389 389  (% class="box warningmessage" %)
390 390  (((
391 -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.
392 392  )))
393 393  
394 394  === Short circuit ===
... ... @@ -418,11 +418,6 @@
418 418  
419 419  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
420 420  
421 -(% class="box infomessage" %)
422 -(((
423 -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).
424 -)))
425 -
426 426  === High contactor temperature ===
427 427  
428 428  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.
... ... @@ -451,11 +451,6 @@
451 451  
452 452  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
453 453  
454 -(% class="box infomessage" %)
455 -(((
456 -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).
457 -)))
458 -
459 459  === Current sensor ===
460 460  
461 461  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.
... ... @@ -487,7 +487,7 @@
487 487  
488 488  (% class="box warningmessage" %)
489 489  (((
490 -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.
491 491  )))
492 492  
493 493  === Power switch ===
... ... @@ -505,13 +505,39 @@
505 505  
506 506  (% class="box warningmessage" %)
507 507  (((
508 -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.
509 509  )))
510 510  
511 511  === Power fault ===
512 512  
513 -TBA
512 +BMS Main 3 device checks the status of CAN2, CAN3, RS-485-2 and Current sensors power supply.
514 514  
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 +
515 515  === Charge contactor cycles ===
516 516  
517 517  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -539,11 +539,6 @@
539 539  
540 540  * the “Delay before clearing the error” time has passed since the error was generated.
541 541  
542 -(% class="box infomessage" %)
543 -(((
544 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
545 -)))
546 -
547 547  === Discharge contactor cycles ===
548 548  
549 549  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -571,11 +571,6 @@
571 571  
572 572  * the “Delay before clearing the error” time has passed since the error was generated.
573 573  
574 -(% class="box infomessage" %)
575 -(((
576 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
577 -)))
578 -
579 579  === Temperature sensors ===
580 580  
581 581  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -595,7 +595,7 @@
595 595  
596 596  (% class="box warningmessage" %)
597 597  (((
598 -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.
599 599  )))
600 600  
601 601  === WDT reset ===
... ... @@ -618,7 +618,7 @@
618 618  
619 619  (% class="box warningmessage" %)
620 620  (((
621 -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.
622 622  )))
623 623  
624 624  === Unallowable charging ===
... ... @@ -646,11 +646,6 @@
646 646  
647 647  * the battery current is zero during the “Delay before clearing the error” time.
648 648  
649 -(% class="box infomessage" %)
650 -(((
651 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
652 -)))
653 -
654 654  === Stuck contactor ===
655 655  
656 656  The BMS Main 3 device protects contactors against sticking.
... ... @@ -674,7 +674,7 @@
674 674  
675 675  (% class="box warningmessage" %)
676 676  (((
677 -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.
678 678  )))
679 679  
680 680  === Contactor feedback ===
... ... @@ -698,7 +698,7 @@
698 698  
699 699  (% class="box warningmessage" %)
700 700  (((
701 -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.
702 702  )))
703 703  
704 704  === Insulation ===
... ... @@ -724,7 +724,7 @@
724 724  
725 725  (% class="box warningmessage" %)
726 726  (((
727 -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.
728 728  )))
729 729  
730 730  === HVIL ===
... ... @@ -744,15 +744,19 @@
744 744  * Source is ON: Upper current limit, A;
745 745  * Lock – a flag to block the error until the device is restarted.
746 746  
747 -If interlock loop breaks and its curre, 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.
748 748  
759 +Error clears if interlock loop is being restored.
760 +
749 749  (% class="box warningmessage" %)
750 750  (((
751 -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.
752 752  )))
753 753  
754 754  === Critical error ===
755 755  
768 +Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
769 +
756 756  To change the critical error parameters, select the "Protections → Critical error" section:
757 757  
758 758  [[image:1733328487100-898.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
... ... @@ -764,43 +764,15 @@
764 764  * Delay before clearing the error, second;
765 765  * Lock – a flag to block the error until the device is restarted.
766 766  
767 -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.
768 768  
769 -* “Battery cover error”;
770 -* “Water”;
771 -* “Logic offline”;
772 -* “Cell count error”;
773 -* “ADC error”;
774 -* “Current sensor error”;
775 -* “Shunt offline”;
776 -* “Shunt error”;
777 -* “WDT reset”
778 -* “No temp. sensors”;
779 -* “Temperature sensor shorted”;
780 -* “Stuck contactor”;
781 -* “CH contactor feedback error”;
782 -* “DCH contactor feedback error”;
783 -* “Insulation fault”;
784 -* “PCH contactor feedback error”;
785 -* “CH/DCH contactor feedback error”;
786 -* “Main contactor feedback error”;
787 -* “High voltage fault”;
788 -* “Power switch error”;
789 -* “HVIL error”l
790 -* “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.
791 791  
792 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
793 -
794 -(% class="box infomessage" %)
795 -(((
796 -If there is the “Critical error”, **all **contactors open.
797 -)))
798 -
799 799  === General error ===
800 800  
801 801  To change the general error parameters, select the "Protections → Critical error" section:
802 802  
803 -[[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"]]
804 804  
805 805  In this section:
806 806  
... ... @@ -808,13 +808,13 @@
808 808  * Delay before setting the error, millisecond;
809 809  * Delay before clearing the error, second;
810 810  * Lock – a flag to block the error until the device is restarted;
811 -* 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.
812 812  
813 -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.
814 814  
815 815  The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
816 816  
817 817  (% class="box infomessage" %)
818 818  (((
819 -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.
820 820  )))
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