Skip to Content

Changes for page 3.4 Protections

Last modified by Admin on 2026/04/27 13:04
From version 29.1
edited by Admin
on 2026/04/27 13:04
Change comment: Uploaded new attachment "1777295045614-956.png", version {1}
To version 1.23
edited by Admin
on 2025/02/24 14:26
Change comment: There is no comment for this version

Summary

Details

Page properties
Content
... ... @@ -43,46 +43,6 @@
43 43  * 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;
44 44  * the current is negative (discharging), and its modulo value is less than the “Tolerant discharging current” value for the “Delay before clearing the error” time.
45 45  
46 -=== Charge current limit ===
47 -
48 -The BMS Mini device can check if the charging current exceeds the estimated limit based on the [[Charge map>>doc:Battery management systems.BMS Mini S.3\. Configuration.3\.3 Control.WebHome||anchor="HChargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
49 -
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:1740571132019-848.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="143" width="800"]]
55 -
56 -In this section:
57 -
58 -* Enable – a flag to enable the protection;
59 -* 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;
60 -* Region 1: Current difference – a value of maximum absolute current difference, A;
61 -* Region 2: Current difference – a value of maximum relative current excess, A;
62 -* Delay before setting the error, millisecond;
63 -* Delay before clearing the error, second;
64 -* Lock – a flag to block the error until the device is restarted.
65 -
66 -=== Discharge current limit ===
67 -
68 -The BMS Mini device can check if the discharging current exceeds the estimated limit based on the [[Discharge map>>doc:Battery management systems.BMS Mini S.3\. Configuration.3\.3 Control.WebHome||anchor="HDischargemap"]]. If current exceeds the calculated limit more than configured difference, "Current limit" error is generated.
69 -
70 -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.
71 -
72 -To change the overcurrent protection of the battery, select the "Protections → Discharge current limit" section:
73 -
74 -[[image:1740571296344-411.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="151" width="800"]]
75 -
76 -In this section:
77 -
78 -* Enable – a flag to enable the protection;
79 -* 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;
80 -* Region 1: Current difference – a value of maximum absolute current difference, A;
81 -* Region 2: Current difference – a value of maximum relative current excess, A;
82 -* Delay before setting the error, millisecond;
83 -* Delay before clearing the error, second;
84 -* Lock – a flag to block the error until the device is restarted.
85 -
86 86  === Undervoltage ===
87 87  
88 88  The BMS Mini device implements battery protection from too low voltage on the cells.
... ... @@ -89,7 +89,7 @@
89 89  
90 90  To change the battery protection parameters from low voltage on the cells, select the "Protections → Undervoltage" section:
91 91  
92 -[[image:1740571345293-460.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
52 +[[image:1733748033237-837.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="127" width="800"]]
93 93  
94 94  In this section:
95 95  
... ... @@ -96,7 +96,6 @@
96 96  * Enable – a flag to enable the protection;
97 97  * Minimum cell voltage, V;
98 98  * Tolerant cell voltage, V;
99 -* 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 instead of measured value;
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.
... ... @@ -117,7 +117,7 @@
117 117  
118 118  To change the battery protection parameters from high voltage on the cells, select the "Protections → Overvoltage" section:
119 119  
120 -[[image:1740571383842-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="147" width="800"]]
79 +[[image:1733748033238-995.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="138" width="800"]]
121 121  
122 122  In this section:
123 123  
... ... @@ -124,9 +124,9 @@
124 124  * Enable – a flag to enable the protection;
125 125  * Maximum cell voltage, V;
126 126  * Tolerant cell voltage, V;
127 -* 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 instead of measured value;
128 128  * Delay before setting the error, millisecond;
129 129  * Delay before clearing the error, second;
88 +* Switch off the discharging contactor on error – a flag to open the discharging contactor when the "Overvoltage" error is generated;
130 130  * Lock – a flag to block the error until the device is restarted.
131 131  
132 132  As a result of the operation of the battery protection from high voltage, the "Overvoltage" error is generated.
... ... @@ -139,33 +139,6 @@
139 139  
140 140  * 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.
141 141  
142 -=== Cell imbalance ===
143 -
144 -The BMS Mini S device implements battery protection from too much cell imbalance. If balancing algorithm is not enough to compensate battery imbalance, then imbalance protection generates an error when imbalance is above estimated threshold.
145 -
146 -To change the battery protection parameters from cell imbalance, select the "Protections → Cell imbalance" section:
147 -
148 -[[image:1762772978976-565.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="145" width="800"]]
149 -
150 -In this section:
151 -
152 -* Enable – a flag to enable the protection;
153 -* Maximum cell imbalance, V;
154 -* Tolerant cell imbalance, V;
155 -* Delay before setting the error, millisecond;
156 -* Delay before clearing the error, second;
157 -* Lock – a flag to block the error until the device is restarted.
158 -
159 -As a result of the operation of the battery protection from cell imbalance, the "Cell imbalance” error is generated.
160 -
161 -Error generation conditions:
162 -
163 -* the voltage difference between the most charged cell and the least charged cell is more than the “Maximum cell imbalance” value for the “Delay before setting the error” time.
164 -
165 -Conditions for removing the error:
166 -
167 -* the voltage difference between the most charged cell and the least charged cell is less than the “Tolerant cell imbalance” value for the “Delay before clearing the error” time.
168 -
169 169  === Low temperature ===
170 170  
171 171  The BMS Mini device implements battery protection from too low temperature.
... ... @@ -252,32 +252,6 @@
252 252  If there is the "Battery cover error", the **“Critical error” **is generated.
253 253  )))
254 254  
255 -=== High board temperature ===
256 -
257 -BMS Mini monitors its temperature and disables the cell balancing when it overheats.
258 -
259 -To change the overheating protection parameters of BMS Mini device, select the "Protections → High board temperature" section:
260 -
261 -
262 -In this section:
263 -
264 -* Enable – a flag to enable the protection;
265 -* Maximum temperature, °C;
266 -* Tolerant temperature, °C;
267 -* Delay before setting the error, second;
268 -* Delay before clearing the error, second;
269 -* Lock – lock the error until the device is reset.
270 -
271 -As a result of the operation of the protection from high temperatures of BMS Mini device, the "High board temperature" is generated.
272 -
273 -Error generation conditions:
274 -
275 -* a BMS Mini device temperature is higher than the “Maximum temperature” value.
276 -
277 -Conditions for removing the error:
278 -
279 -* a BMS Mini device temperature is less than the “Tolerant temperature” value.
280 -
281 281  === Cell monitor offline ===
282 282  
283 283  The BMS Mini device checks if there is connection with cell monitor and set an error if not.
... ... @@ -335,35 +335,6 @@
335 335  If there is the "Cell count error", the **“Critical error” **is generated.
336 336  )))
337 337  
338 -=== Temperature sensor count ===
339 -
340 -To change the protection parameters from the mismatch of the number of temperature sensors to the set value, select the "Protections → Temperature sensor count" section:
341 -
342 -[[image:1762773073782-768.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
343 -
344 -In this section:
345 -
346 -* Enable – a flag to enable the protection;
347 -* Number of cells – a number of temperature sensors connected to the BMS;
348 -* Delay before setting the error, millisecond;
349 -* Delay before clearing the error, second;
350 -* Lock – a flag to block the error until the device is restarted.
351 -
352 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
353 -
354 -Error generation conditions:
355 -
356 -* the number of temperature sensors connected to the BMS is **not equal** to the “Number of temperature sensors” value during the “Delay before setting the error” time.
357 -
358 -Conditions for removing the error:
359 -
360 -* the number of temperature sensors connected to the BMS is **equal** to the “Number of temperature sensors” value during the “Delay before clearing the error” time.
361 -
362 -(% class="box warningmessage" %)
363 -(((
364 -If there is the "T-sensor count error", the **“Critical error” **is generated**.**
365 -)))
366 -
367 367  === Short circuit ===
368 368  
369 369  The BMS Mini device implements a protection of power circuits (contactors, power wires) against overheating caused by the flow of high current for a long time.
... ... @@ -459,24 +459,6 @@
459 459  If there is the “Current sensor error”, the **“Critical error” **is generated.
460 460  )))
461 461  
462 -=== MOSFET ===
463 -
464 -BMS Mini S device checks the status of MOSFET switches that are used to control the contactors. To change the parameters of the MOSFET switch protection, select the "Protections → MOSFET " section:
465 -
466 -[[image:1762773566548-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
467 -
468 -In this section:
469 -
470 -* Delay before clearing the error, second;
471 -* Lock – a flag to block the error until the device is restarted.
472 -
473 -The “MOSFET error” occurs when the device detects a shortage in contactor coil control circuit or an overheating of the MOSFET switch. Error is removed when the temperature of MOSFET switch is normal during “Delay before clearing the error” time.
474 -
475 -(% class="box warningmessage" %)
476 -(((
477 -If there is the "MOSFET error", the **“Critical error” **is generated.
478 -)))
479 -
480 480  === Charge contactor cycles ===
481 481  
482 482  The BMS Mini device protects the charging contactor against frequent switching.
... ... @@ -493,6 +493,7 @@
493 493  * Delay before setting the error, millisecond;
494 494  * Delay before clearing the error, second;
495 495  * Lock – a flag to block the error until the device is restarted.
355 +* Number of cycles – a number of the charging contactor switchings made during battery operation.
496 496  
497 497  If there is the high switching frequency of the charging contactor, the “CH contactor cycles error” is generated.
498 498  
... ... @@ -504,13 +504,13 @@
504 504  
505 505  * the “Delay before clearing the error” time has passed since the error was generated.
506 506  
507 -=== Discharge contactor cycles ===
367 +=== Discharge contactor cycles protection ===
508 508  
509 509  The BMS Mini device protects the discharging contactor against frequent switching.
510 510  
511 511  To change the protection parameters against high frequency switching of the discharging contactor, select the "Protections → Discharging contactor cycles" section:
512 512  
513 -[[image:1740571600741-802.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="128" width="800"]]
373 +[[image:1733748068420-615.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="139" width="800"]]
514 514  
515 515  In this section:
516 516  
... ... @@ -520,6 +520,7 @@
520 520  * Delay before setting the error, millisecond;
521 521  * Delay before clearing the error, second;
522 522  * Lock – a flag to block the error until the device is restarted.
383 +* Number of cycles – a number of the charging contactor switchings made during battery operation.
523 523  
524 524  If there is the high switching frequency of the discharging contactor, the “DCH contactor cycles error” is generated.
525 525  
... ... @@ -620,11 +620,6 @@
620 620  
621 621  * charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set.
622 622  
623 -(% class="box warningmessage" %)
624 -(((
625 -If there is the "Stuck contactor" error, the **“Critical error” **is generated.
626 -)))
627 -
628 628  === Contactor feedback ===
629 629  
630 630  The BMS Mini device can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, the feedback signal must be connected to corresponding contactor feedback pin on X1 header.
... ... @@ -644,11 +644,6 @@
644 644  
645 645  * a command for charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value.
646 646  
647 -(% class="box warningmessage" %)
648 -(((
649 -If there is the "Contactor feedback" error, the **“Critical error” **is generated.
650 -)))
651 -
652 652  === Insulation ===
653 653  
654 654  The BMS Mini device can detect a signal from an external insulation monitoring device (such as Bender IR155) to monitor the insulation quality.
... ... @@ -655,15 +655,11 @@
655 655  
656 656  To change the insulation monitoring parameters, select the "Protections → Insulation" section:
657 657  
658 -[[image:1740573733492-485.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="119" width="800"]]
509 +[[image:1733748083469-478.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="102" width="800"]]
659 659  
660 660  In this section:
661 661  
662 662  * Enable – a flag to enable the protection;
663 -* Checking algorithm – isolation checking mode:
664 -** Always on – check is always performed;
665 -** On charging – check is performed only if “Charger connected” or “Charge request” is set;
666 -** Except charging - check is performed only if “Charger connected” and “Charge request” are cleared;
667 667  * Delay before setting the error, second;
668 668  * Delay before clearing the error, second;
669 669  * Lock – a flag to block the error until the device is restarted.
... ... @@ -670,16 +670,11 @@
670 670  
671 671  Error is set if corresponding discrete input is set up and it receives logical zero.
672 672  
673 -(% class="box warningmessage" %)
674 -(((
675 -If there is the "Insulation" error, the **“Critical error” **is generated.
676 -)))
677 -
678 678  === Critical error ===
679 679  
680 680  To change the critical error parameters, select the "Protections → Critical error" section:
681 681  
682 -[[image:1762775067035-203.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="143" width="800"]]
524 +[[image:1733748083469-183.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
683 683  
684 684  In this section:
685 685  
... ... @@ -686,32 +686,23 @@
686 686  * Enable – a flag to enable the protection;
687 687  * Delay before setting the error, millisecond;
688 688  * Delay before clearing the error, second;
689 -* Errors 1,2 to ignore when setting the critical error;
690 690  * Lock – a flag to block the error until the device is restarted.
691 691  
692 -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.
533 +The critical error flag is generated if at least one of the following errors is generated during the “Delay before setting the error” time:
693 693  
694 -The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
535 +* “Battery cover error”;
536 +* “Cell monitor offline”;
537 +* “Cell count error”;
538 +* “ADC error”;
539 +* “Current sensor error”;
540 +* “Shunt offline”;
541 +* “Shunt error”;
542 +* “No temp. sensors”;
543 +* “Temp. sensor is shorted”;
544 +* “Settings error”;
545 +* “WDT reset”;
546 +* “Stuck contactor”;
547 +* “Contactor feedback error”;
548 +* “Insulation fault”.
695 695  
696 -=== General error ===
697 -
698 -To change the general error parameters, select the "Protections → Critical error" section:
699 -
700 -[[image:1740573914327-561.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="129" width="800"]]
701 -
702 -In this section:
703 -
704 -* Enable – a flag to enable the protection;
705 -* Delay before setting the error, millisecond;
706 -* Delay before clearing the error, second;
707 -* Lock – a flag to block the error until the device is restarted;
708 -* Errors 1, 2 to set the "Critical error" – bitfields to enable check of corresponding errors.
709 -
710 -The “General error” is generated if at least one of the enabled errors is generated during the “Delay before setting the error” time.
711 -
712 -The “General error” is cleared if there are no errors from the enabled errors during the “Delay before clearing the error” time.
713 -
714 -(% class="box warningmessage" %)
715 -(((
716 -The state of the “General error” can be assigned to a discrete output or to a power switch.
717 -)))
550 +The “Critical error” is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
1740571132019-848.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -22.3 KB
Content
1740571296344-411.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -21.9 KB
Content
1740571345293-460.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -22.3 KB
Content
1740571383842-536.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -24.6 KB
Content
1740571600741-802.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -20.6 KB
Content
1740573733492-485.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -23.4 KB
Content
1740573914327-561.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -19.6 KB
Content
1762772949184-209.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -18.0 KB
Content
1762772978976-565.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -18.0 KB
Content
1762773073782-768.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.6 KB
Content
1762773136224-775.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.6 KB
Content
1762773285560-458.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.1 KB
Content
1762773566548-852.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -16.1 KB
Content
1762775067035-203.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -19.4 KB
Content
1777294625990-675.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -14.8 KB
Content
1777295045614-956.png
Author
... ... @@ -1,1 +1,0 @@
1 -XWiki.admin
Size
... ... @@ -1,1 +1,0 @@
1 -14.8 KB
Content