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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.14
edited by Admin
on 2024/12/26 15:04
Change comment: There is no comment for this version
To version 20.1
edited by Admin
on 2024/12/26 15:41
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 warningmessage" %)
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.
... ... @@ -37,28 +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
55 -*
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.
56 56  
57 -
58 58  === Discharge current limit ===
59 59  
60 -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.
61 61  
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 +
62 62  === Undervoltage ===
63 63  
64 64  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -87,11 +87,6 @@
87 87  
88 88  * 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.
89 89  
90 -(% class="box infomessage" %)
91 -(((
92 -If there is the "Undervoltage" error, the **discharging **contactor opens.
93 -)))
94 -
95 95  === Overvoltage ===
96 96  
97 97  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -120,11 +120,6 @@
120 120  
121 121  * 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.
122 122  
123 -(% class="box infomessage" %)
124 -(((
125 -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).
126 -)))
127 -
128 128  === Low temperature ===
129 129  
130 130  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -154,12 +154,6 @@
154 154  
155 155  * 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.
156 156  
157 -(% class="box infomessage" %)
158 -(((
159 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
160 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
161 -)))
162 -
163 163  === High temperature ===
164 164  
165 165  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -189,12 +189,6 @@
189 189  
190 190  * 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.
191 191  
192 -(% class="box infomessage" %)
193 -(((
194 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
195 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
196 -)))
197 -
198 198  === Battery cover ===
199 199  
200 200  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -220,7 +220,7 @@
220 220  
221 221  (% class="box warningmessage" %)
222 222  (((
223 -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**.**
224 224  )))
225 225  
226 226  === High humidity ===
... ... @@ -282,9 +282,9 @@
282 282  
283 283  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
284 284  
285 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
286 286  (((
287 -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.
288 288  )))
289 289  
290 290  === Logic high temperature ===
... ... @@ -340,7 +340,7 @@
340 340  
341 341  (% class="box warningmessage" %)
342 342  (((
343 -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**.**
344 344  )))
345 345  
346 346  === Cell count ===
... ... @@ -369,7 +369,7 @@
369 369  
370 370  (% class="box warningmessage" %)
371 371  (((
372 -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**.**
373 373  )))
374 374  
375 375  === Logic count ===
... ... @@ -397,7 +397,7 @@
397 397  
398 398  (% class="box warningmessage" %)
399 399  (((
400 -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.
401 401  )))
402 402  
403 403  === Short circuit ===
... ... @@ -427,11 +427,6 @@
427 427  
428 428  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
429 429  
430 -(% class="box infomessage" %)
431 -(((
432 -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).
433 -)))
434 -
435 435  === High contactor temperature ===
436 436  
437 437  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.
... ... @@ -460,11 +460,6 @@
460 460  
461 461  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
462 462  
463 -(% class="box infomessage" %)
464 -(((
465 -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).
466 -)))
467 -
468 468  === Current sensor ===
469 469  
470 470  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.
... ... @@ -496,7 +496,7 @@
496 496  
497 497  (% class="box warningmessage" %)
498 498  (((
499 -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.
500 500  )))
501 501  
502 502  === Power switch ===
... ... @@ -514,13 +514,9 @@
514 514  
515 515  (% class="box warningmessage" %)
516 516  (((
517 -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.
518 518  )))
519 519  
520 -=== Power fault ===
521 -
522 -TBA
523 -
524 524  === Charge contactor cycles ===
525 525  
526 526  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -548,11 +548,6 @@
548 548  
549 549  * the “Delay before clearing the error” time has passed since the error was generated.
550 550  
551 -(% class="box infomessage" %)
552 -(((
553 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
554 -)))
555 -
556 556  === Discharge contactor cycles ===
557 557  
558 558  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -580,11 +580,6 @@
580 580  
581 581  * the “Delay before clearing the error” time has passed since the error was generated.
582 582  
583 -(% class="box infomessage" %)
584 -(((
585 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
586 -)))
587 -
588 588  === Temperature sensors ===
589 589  
590 590  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -604,7 +604,7 @@
604 604  
605 605  (% class="box warningmessage" %)
606 606  (((
607 -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.
608 608  )))
609 609  
610 610  === WDT reset ===
... ... @@ -627,7 +627,7 @@
627 627  
628 628  (% class="box warningmessage" %)
629 629  (((
630 -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.
631 631  )))
632 632  
633 633  === Unallowable charging ===
... ... @@ -655,11 +655,6 @@
655 655  
656 656  * the battery current is zero during the “Delay before clearing the error” time.
657 657  
658 -(% class="box infomessage" %)
659 -(((
660 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
661 -)))
662 -
663 663  === Stuck contactor ===
664 664  
665 665  The BMS Main 3 device protects contactors against sticking.
... ... @@ -683,7 +683,7 @@
683 683  
684 684  (% class="box warningmessage" %)
685 685  (((
686 -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.
687 687  )))
688 688  
689 689  === Contactor feedback ===
... ... @@ -707,7 +707,7 @@
707 707  
708 708  (% class="box warningmessage" %)
709 709  (((
710 -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.
711 711  )))
712 712  
713 713  === Insulation ===
... ... @@ -733,7 +733,7 @@
733 733  
734 734  (% class="box warningmessage" %)
735 735  (((
736 -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.
737 737  )))
738 738  
739 739  === HVIL ===
... ... @@ -757,7 +757,7 @@
757 757  
758 758  (% class="box warningmessage" %)
759 759  (((
760 -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.
761 761  )))
762 762  
763 763  === Critical error ===
... ... @@ -795,16 +795,11 @@
795 795  * “Main contactor feedback error”;
796 796  * “High voltage fault”;
797 797  * “Power switch error”;
798 -* “HVIL error”l
769 +* “HVIL error”;
799 799  * “Power fault”.
800 800  
801 801  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
802 802  
803 -(% class="box infomessage" %)
804 -(((
805 -If there is the “Critical error”, **all **contactors open.
806 -)))
807 -
808 808  === General error ===
809 809  
810 810  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -825,5 +825,5 @@
825 825  
826 826  (% class="box infomessage" %)
827 827  (((
828 -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 assigned to a discrete output or to a power switch.
829 829  )))
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