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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.19
edited by Admin
on 2024/12/26 15:06
Change comment: There is no comment for this version
To version 21.1
edited by Admin
on 2025/02/11 14:23
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.
... ... @@ -37,33 +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 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"]].
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  
49 -Current
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.
50 50  
51 -If current is more than calculated maximum, "Current limit" error is generated.
52 -
53 -
54 54  To change the overcurrent protection of the battery, select the "Protections → Charge current limit" section:
55 55  
56 56  [[image:1735225207687-430.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="113" width="800"]]In this section:
57 57  
58 58  * Enable – a flag to enable the protection;
59 -* Threshold to switch from Region 1 to Region 2
60 -*
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.
61 61  
62 -
63 63  === Discharge current limit ===
64 64  
65 -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.
66 66  
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 +
67 67  === Undervoltage ===
68 68  
69 69  The BMS Main 3 device implements battery protection from too low voltage on the cells.
... ... @@ -92,11 +92,6 @@
92 92  
93 93  * 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.
94 94  
95 -(% class="box infomessage" %)
96 -(((
97 -If there is the "Undervoltage" error, the **discharging **contactor opens.
98 -)))
99 -
100 100  === Overvoltage ===
101 101  
102 102  The BMS Main 3 device implements battery protection from too high voltage on the cells.
... ... @@ -125,11 +125,6 @@
125 125  
126 126  * 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.
127 127  
128 -(% class="box infomessage" %)
129 -(((
130 -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).
131 -)))
132 -
133 133  === Low temperature ===
134 134  
135 135  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -159,12 +159,6 @@
159 159  
160 160  * 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.
161 161  
162 -(% class="box infomessage" %)
163 -(((
164 -If there is the "Low temperature (CH)" error, the **charging **contactor opens.
165 -If there is the "Low temperature (DCH)" error, the **discharging **contactor opens.
166 -)))
167 -
168 168  === High temperature ===
169 169  
170 170  The BMS Main 3 device implements battery protection from too high temperature.
... ... @@ -194,12 +194,6 @@
194 194  
195 195  * 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.
196 196  
197 -(% class="box infomessage" %)
198 -(((
199 -If there is the "High temperature (CH)" error, the **charging **contactor opens.
200 -If there is the "High temperature (DCH)" error, the **discharging **contactor opens.
201 -)))
202 -
203 203  === Battery cover ===
204 204  
205 205  To change the protection parameters from opening the battery cover, select the "Protections → Battery cover" section:
... ... @@ -225,7 +225,7 @@
225 225  
226 226  (% class="box warningmessage" %)
227 227  (((
228 -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**.**
229 229  )))
230 230  
231 231  === High humidity ===
... ... @@ -287,9 +287,9 @@
287 287  
288 288  * the measured humidity is less than the “Tolerant humidity” value during the “Delay before clearing the error” time.
289 289  
290 -(% class="box infomessage" %)
285 +(% class="box warningmessage" %)
291 291  (((
292 -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.
293 293  )))
294 294  
295 295  === Logic high temperature ===
... ... @@ -345,7 +345,7 @@
345 345  
346 346  (% class="box warningmessage" %)
347 347  (((
348 -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**.**
349 349  )))
350 350  
351 351  === Cell count ===
... ... @@ -374,7 +374,7 @@
374 374  
375 375  (% class="box warningmessage" %)
376 376  (((
377 -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**.**
378 378  )))
379 379  
380 380  === Logic count ===
... ... @@ -402,7 +402,7 @@
402 402  
403 403  (% class="box warningmessage" %)
404 404  (((
405 -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.
406 406  )))
407 407  
408 408  === Short circuit ===
... ... @@ -432,11 +432,6 @@
432 432  
433 433  * the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
434 434  
435 -(% class="box infomessage" %)
436 -(((
437 -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).
438 -)))
439 -
440 440  === High contactor temperature ===
441 441  
442 442  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.
... ... @@ -465,11 +465,6 @@
465 465  
466 466  * the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
467 467  
468 -(% class="box infomessage" %)
469 -(((
470 -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).
471 -)))
472 -
473 473  === Current sensor ===
474 474  
475 475  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.
... ... @@ -501,7 +501,7 @@
501 501  
502 502  (% class="box warningmessage" %)
503 503  (((
504 -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.
505 505  )))
506 506  
507 507  === Power switch ===
... ... @@ -519,13 +519,9 @@
519 519  
520 520  (% class="box warningmessage" %)
521 521  (((
522 -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.
523 523  )))
524 524  
525 -=== Power fault ===
526 -
527 -TBA
528 -
529 529  === Charge contactor cycles ===
530 530  
531 531  The BMS Main 3 device protects the charging contactor against frequent switching.
... ... @@ -553,11 +553,6 @@
553 553  
554 554  * the “Delay before clearing the error” time has passed since the error was generated.
555 555  
556 -(% class="box infomessage" %)
557 -(((
558 -If there is the "CH contactor cycles error" error, the **charging **contactor opens.
559 -)))
560 -
561 561  === Discharge contactor cycles ===
562 562  
563 563  The BMS Main 3 device protects the discharging contactor against frequent switching.
... ... @@ -585,11 +585,6 @@
585 585  
586 586  * the “Delay before clearing the error” time has passed since the error was generated.
587 587  
588 -(% class="box infomessage" %)
589 -(((
590 -If there is the "DCH contactor cycles error" error, the **discharging **contactor opens.
591 -)))
592 -
593 593  === Temperature sensors ===
594 594  
595 595  The BMS Main 3 device checks the temperature sensors connection circuits. The circuits are checked for breakage and short-circuit.
... ... @@ -609,7 +609,7 @@
609 609  
610 610  (% class="box warningmessage" %)
611 611  (((
612 -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.
613 613  )))
614 614  
615 615  === WDT reset ===
... ... @@ -632,7 +632,7 @@
632 632  
633 633  (% class="box warningmessage" %)
634 634  (((
635 -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.
636 636  )))
637 637  
638 638  === Unallowable charging ===
... ... @@ -660,11 +660,6 @@
660 660  
661 661  * the battery current is zero during the “Delay before clearing the error” time.
662 662  
663 -(% class="box infomessage" %)
664 -(((
665 -If there is the "Unallowable charging" error, the **discharging **contactor opens.
666 -)))
667 -
668 668  === Stuck contactor ===
669 669  
670 670  The BMS Main 3 device protects contactors against sticking.
... ... @@ -688,7 +688,7 @@
688 688  
689 689  (% class="box warningmessage" %)
690 690  (((
691 -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.
692 692  )))
693 693  
694 694  === Contactor feedback ===
... ... @@ -712,7 +712,7 @@
712 712  
713 713  (% class="box warningmessage" %)
714 714  (((
715 -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.
716 716  )))
717 717  
718 718  === Insulation ===
... ... @@ -738,7 +738,7 @@
738 738  
739 739  (% class="box warningmessage" %)
740 740  (((
741 -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.
742 742  )))
743 743  
744 744  === HVIL ===
... ... @@ -762,7 +762,7 @@
762 762  
763 763  (% class="box warningmessage" %)
764 764  (((
765 -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.
766 766  )))
767 767  
768 768  === Critical error ===
... ... @@ -800,16 +800,11 @@
800 800  * “Main contactor feedback error”;
801 801  * “High voltage fault”;
802 802  * “Power switch error”;
803 -* “HVIL error”l
769 +* “HVIL error”;
804 804  * “Power fault”.
805 805  
806 806  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
807 807  
808 -(% class="box infomessage" %)
809 -(((
810 -If there is the “Critical error”, **all **contactors open.
811 -)))
812 -
813 813  === General error ===
814 814  
815 815  To change the general error parameters, select the "Protections → Critical error" section:
... ... @@ -830,5 +830,5 @@
830 830  
831 831  (% class="box infomessage" %)
832 832  (((
833 -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.
834 834  )))
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