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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.13
edited by Admin
on 2024/12/26 15:04
Change comment: There is no comment for this version
To version 18.1
edited by Admin
on 2024/12/26 15:29
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.
... ... @@ -37,27 +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 -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.
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 +
49 49  To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
50 50  
51 51  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
52 52  
53 53  * Enable – a flag to enable the protection;
54 -* Threshold to switch from Region 1 to Region 2
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.
55 55  
56 -
57 57  === Discharge current limit ===
58 58  
59 -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.
60 60  
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 +
61 61  === Undervoltage ===
62 62  
63 63  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -86,11 +86,6 @@
86 86  
87 87  * 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.
88 88  
89 -(% class="box infomessage" %)
90 -(((
91 -If there is the "Undervoltage" error, the **discharging **contactor opens.
92 -)))
93 -
94 94  === Overvoltage ===
95 95  
96 96  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -119,11 +119,6 @@
119 119  
120 120  * 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.
121 121  
122 -(% class="box infomessage" %)
123 -(((
124 -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).
125 -)))
126 -
127 127  === Low temperature ===
128 128  
129 129  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -153,12 +153,6 @@
153 153  
154 154  * 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.
155 155  
156 -(% class="box infomessage" %)
157 -(((
158 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
159 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
160 -)))
161 -
162 162  === High temperature ===
163 163  
164 164  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -188,12 +188,6 @@
188 188  
189 189  * 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.
190 190  
191 -(% class="box infomessage" %)
192 -(((
193 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
194 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
195 -)))
196 -
197 197  === Battery cover ===
198 198  
199 199  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -219,7 +219,7 @@
219 219  
220 220  (% class="box warningmessage" %)
221 221  (((
222 -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**.**
223 223  )))
224 224  
225 225  === High humidity ===
... ... @@ -281,9 +281,9 @@
281 281  
282 282  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
283 283  
284 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
285 285  (((
286 -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.
287 287  )))
288 288  
289 289  === Logic high temperature ===
... ... @@ -339,7 +339,7 @@
339 339  
340 340  (% class="box warningmessage" %)
341 341  (((
342 -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**.**
343 343  )))
344 344  
345 345  === Cell count ===
... ... @@ -368,7 +368,7 @@
368 368  
369 369  (% class="box warningmessage" %)
370 370  (((
371 -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**.**
372 372  )))
373 373  
374 374  === Logic count ===
... ... @@ -396,7 +396,7 @@
396 396  
397 397  (% class="box warningmessage" %)
398 398  (((
399 -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.
400 400  )))
401 401  
402 402  === Short circuit ===
... ... @@ -426,11 +426,6 @@
426 426  
427 427  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
428 428  
429 -(% class="box infomessage" %)
430 -(((
431 -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).
432 -)))
433 -
434 434  === High contactor temperature ===
435 435  
436 436  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.
... ... @@ -459,11 +459,6 @@
459 459  
460 460  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
461 461  
462 -(% class="box infomessage" %)
463 -(((
464 -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).
465 -)))
466 -
467 467  === Current sensor ===
468 468  
469 469  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.
... ... @@ -495,7 +495,7 @@
495 495  
496 496  (% class="box warningmessage" %)
497 497  (((
498 -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.
499 499  )))
500 500  
501 501  === Power switch ===
... ... @@ -513,13 +513,9 @@
513 513  
514 514  (% class="box warningmessage" %)
515 515  (((
516 -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.
517 517  )))
518 518  
519 -=== Power fault ===
520 -
521 -TBA
522 -
523 523  === Charge contactor cycles ===
524 524  
525 525  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -547,11 +547,6 @@
547 547  
548 548  * the “Delay before clearing the error” time has passed since the error was generated.
549 549  
550 -(% class="box infomessage" %)
551 -(((
552 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
553 -)))
554 -
555 555  === Discharge contactor cycles ===
556 556  
557 557  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -579,11 +579,6 @@
579 579  
580 580  * the “Delay before clearing the error” time has passed since the error was generated.
581 581  
582 -(% class="box infomessage" %)
583 -(((
584 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
585 -)))
586 -
587 587  === Temperature sensors ===
588 588  
589 589  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -603,7 +603,7 @@
603 603  
604 604  (% class="box warningmessage" %)
605 605  (((
606 -If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated and **all relays open.**
583 +If there is the “No temp. sensors” or “Temp. sensor is shorted” error, the **“Critical error”** is generated.
607 607  )))
608 608  
609 609  === WDT reset ===
... ... @@ -626,7 +626,7 @@
626 626  
627 627  (% class="box warningmessage" %)
628 628  (((
629 -If there is the "WDT reset" error, the **“Critical error” **is generated and **all relays open.**
606 +If there is the "WDT reset" error, the **“Critical error” **is generated.
630 630  )))
631 631  
632 632  === Unallowable charging ===
... ... @@ -654,11 +654,6 @@
654 654  
655 655  * the battery current is zero during the “Delay before clearing the error” time.
656 656  
657 -(% class="box infomessage" %)
658 -(((
659 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
660 -)))
661 -
662 662  === Stuck contactor ===
663 663  
664 664  The BMS Main 3 device protects contactors against sticking.
... ... @@ -682,7 +682,7 @@
682 682  
683 683  (% class="box warningmessage" %)
684 684  (((
685 -If there is the “Stuck contactor” error, the **“Critical error” **is generated and **all relays open.**
657 +If there is the “Stuck contactor” error, the **“Critical error” **is generated.
686 686  )))
687 687  
688 688  === Contactor feedback ===
... ... @@ -706,7 +706,7 @@
706 706  
707 707  (% class="box warningmessage" %)
708 708  (((
709 -If there is the “Contactor feedback” error, the **“Critical error” **is generated and **all relays open.**
681 +If there is the “Contactor feedback” error, the **“Critical error” **is generated.
710 710  )))
711 711  
712 712  === Insulation ===
... ... @@ -732,7 +732,7 @@
732 732  
733 733  (% class="box warningmessage" %)
734 734  (((
735 -If there is the “Insulation fault”, the **“Critical error”** is generated and **all relays open.**
707 +If there is the “Insulation fault”, the **“Critical error”** is generated.
736 736  )))
737 737  
738 738  === HVIL ===
... ... @@ -756,7 +756,7 @@
756 756  
757 757  (% class="box warningmessage" %)
758 758  (((
759 -If there is the “HVIL error”, the **“Critical error”** is generated and **all relays open.**
731 +If there is the “HVIL error”, the **“Critical error”** is generated.
760 760  )))
761 761  
762 762  === Critical error ===
... ... @@ -794,16 +794,11 @@
794 794  * “Main contactor feedback error”;
795 795  * “High voltage fault”;
796 796  * “Power switch error”;
797 -* “HVIL error”l
769 +* “HVIL error”;
798 798  * “Power fault”.
799 799  
800 800  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
801 801  
802 -(% class="box infomessage" %)
803 -(((
804 -If there is the “Critical error”, **all **contactors open.
805 -)))
806 -
807 807  === General error ===
808 808  
809 809  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -824,5 +824,5 @@
824 824  
825 825  (% class="box infomessage" %)
826 826  (((
827 -The state of the “General error” can be output to a discrete output or a power switch.
794 +The state of the “General error” can be output to a discrete output or to a power switch.
828 828  )))
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