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Changes for page 3.4 Protections

Last modified by Admin on 2025/11/06 10:39
From version 34.1
edited by Admin
on 2025/08/22 14:05
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To version 47.1
edited by Admin
on 2025/11/06 10:39
Change comment: There is no comment for this version

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... ... @@ -137,6 +137,31 @@
137 137  
138 138  * 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.
139 139  
140 +=== Cell imbalance ===
141 +
142 +The BMS Main 3 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.
143 +
144 +To change the battery protection parameters from cell imbalance, select the "Protections → Cell imbalance" section:
145 +
146 +[[image:1760437465709-702.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="133" width="800"]]In this section:
147 +
148 +* Enable – a flag to enable the protection;
149 +* Maximum cell imbalance, V;
150 +* Tolerant cell imbalance, V;
151 +* Delay before setting the error, millisecond;
152 +* Delay before clearing the error, second;
153 +* Lock – a flag to block the error until the device is restarted.
154 +
155 +As a result of the operation of the battery protection from cell imbalance, the "Cell imbalance” error is generated.
156 +
157 +Error generation conditions:
158 +
159 +* 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.
160 +
161 +Conditions for removing the error:
162 +
163 +* 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.
164 +
140 140  === Low temperature ===
141 141  
142 142  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -375,11 +375,40 @@
375 375  If there is the "Cell count error", the **“Critical error” **is generated**.**
376 376  )))
377 377  
403 +=== Temperature sensor count ===
404 +
405 +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:
406 +
407 +[[image:1755871582533-550.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="123" width="800"]]
408 +
409 +In this section:
410 +
411 +* Enable – a flag to enable the protection;
412 +* Number of cells – a number of temperature sensors connected to the BMS;
413 +* Delay before setting the error, millisecond;
414 +* Delay before clearing the error, second;
415 +* Lock – a flag to block the error until the device is restarted.
416 +
417 +As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
418 +
419 +Error generation conditions:
420 +
421 +* 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.
422 +
423 +Conditions for removing the error:
424 +
425 +* 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.
426 +
427 +(% class="box warningmessage" %)
428 +(((
429 +If there is the "T-sensor count error", the **“Critical error” **is generated**.**
430 +)))
431 +
378 378  === Logic count ===
379 379  
380 380  To change the protection parameters from the mismatch of the number of BMS Logic devices to the set value, select the "Protections → Logic count” section:
381 381  
382 -[[image:1733328415732-163.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="110" width="800"]]
436 +[[image:1762425434368-516.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="125" width="800"]]
383 383  
384 384  In this section:
385 385  
... ... @@ -386,6 +386,8 @@
386 386  * Enable – a flag to enable the protection;
387 387  * Logic count – a number of BMS Logic devices connected to the BMS Main;
388 388  * Scan fast – a flag to scan BMS Logic devices fast (devices with addresses from 1 to “Logic count” are scanned; this mode reduces BMS system startup time);
443 +* Delay before setting the error – a delay before setting the error //during initialization//, millisecond;
444 +* Delay before clearing the error– a delay before clearing the error //during initialization//, second;
389 389  * Lock – lock the error until the device is reset.
390 390  
391 391  As a result of the operation of the protection from the mismatch of the number of BMS Logic devices, the "Logic count error" is generated.
... ... @@ -392,11 +392,13 @@
392 392  
393 393  Error generation conditions:
394 394  
395 -* the number of BMS Logic devices connected to the BMS Main is **not equal** to the “Logic count” value.
451 +* during the initialization BMS Main 3 have not found required number of BMS Logic devices during the "Delay before setting the error" time;
452 +* after the initialization the number of BMS Logic devices connected to the BMS Main is **not equal** to the “Logic count” value.
396 396  
397 397  Conditions for removing the error:
398 398  
399 -* the number of BMS Logic devices connected to the BMS Main is **equal** to the “Logic count” value.
456 +* during the initialization BMS Main 3 have found required number of BMS Logic devices and the "Delay before setting the error" time has passed;
457 +* after the initialization the number of BMS Logic devices connected to the BMS Main is **equal** to the “Logic count” value.
400 400  
401 401  (% class="box warningmessage" %)
402 402  (((
... ... @@ -766,6 +766,37 @@
766 766  If there is the “HVIL error”, the **“Critical error”** is generated.
767 767  )))
768 768  
827 +=== Battery voltage ===
828 +
829 +The BMS Main 3 allows to control the difference between sum of all cell voltages and voltage measured before the contactors.
830 +
831 +To change the voltage difference check parameters, select the "Protections → Battery voltage" section:
832 +
833 +[[image:1755871661259-633.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="100" width="800"]]
834 +
835 +In this section:
836 +
837 +* Enable – a flag to enable the protection;
838 +* Abnormal voltage difference – a maximum difference between sum of all cell voltages and voltage measured before the contactors (High voltage 1), V;
839 +* Delay before setting the error, second;
840 +* Delay before clearing the error, second;
841 +* Lock – a flag to block the error until the device is restarted.
842 +
843 +If there is a mismatch between voltages, "Battery voltage mismatch" error is generated.
844 +
845 +Error generation conditions:
846 +
847 +* difference between sum of all cell voltages and voltage measured before the contactors is **more **than "Abnormal voltage difference" value during "Delay before setting the error" time.
848 +
849 +Conditions for removing the error:
850 +
851 +* difference between sum of all cell voltages and voltage measured before the contactors is **less **than "Abnormal voltage difference" value during "Delay before clearing the error" time.
852 +
853 +(% class="box warningmessage" %)
854 +(((
855 +If there is the “Battery voltage mismatch” error, the **“Critical error”** is generated.
856 +)))
857 +
769 769  === Critical error ===
770 770  
771 771  Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
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