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Changes for page 3.4 Protections

Last modified by Admin on 2025/04/09 12:19
From version 16.16
edited by Admin
on 2024/12/26 15:05
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.
... ... @@ -37,15 +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 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.
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 +515,9 @@
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 -=== Power fault ===
522 -
523 -TBA
524 -
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.**
583 +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.**
606 +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.**
657 +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.**
681 +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.**
707 +If there is the “Insulation fault”, the **“Critical error”** is generated.
738 738  )))
739 739  
740 740  === HVIL ===
... ... @@ -758,7 +758,7 @@
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.**
731 +If there is the “HVIL error”, the **“Critical error”** is generated.
762 762  )))
763 763  
764 764  === Critical error ===
... ... @@ -796,16 +796,11 @@
796 796  * “Main contactor feedback error”;
797 797  * “High voltage fault”;
798 798  * “Power switch error”;
799 -* “HVIL error”l
769 +* “HVIL error”;
800 800  * “Power fault”.
801 801  
802 802  The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
803 803  
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.
794 +The state of the “General error” can be output to a discrete output or to a power switch.
830 830  )))
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