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Changes for page 3.4 Protections

Last modified by Admin on 2025/10/14 10:27
From version 36.1
edited by Admin
on 2025/08/22 14:07
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To version 43.3
edited by Admin
on 2025/10/14 10:25
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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 im” error are generated.
156 +
157 +Error generation conditions:
158 +
159 +* the minimum temperature among all cells of the battery is less than the “Minimum charging (discharging) temperature” value for the “Delay before setting the error” time.
160 +
161 +Conditions for removing the error:
162 +
163 +* 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.
164 +
140 140  === Low temperature ===
141 141  
142 142  The BMS Main 3 device implements battery protection from too low temperature.
... ... @@ -389,19 +389,19 @@
389 389  * Delay before clearing the error, second;
390 390  * Lock – a flag to block the error until the device is restarted.
391 391  
392 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensocount error" is generated.
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.
393 393  
394 394  Error generation conditions:
395 395  
396 -* the number of cells connected to the BMS is **not equal** to the “Number of cells” value during the “Delay before setting the error” time.
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.
397 397  
398 398  Conditions for removing the error:
399 399  
400 -* the number of cells connected to the BMS is **equal** to the “Number of cells” value during the “Delay before clearing the error” time.
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.
401 401  
402 402  (% class="box warningmessage" %)
403 403  (((
404 -If there is the "Cell count error", the **“Critical error” **is generated**.**
429 +If there is the "T-sensor count error", the **“Critical error” **is generated**.**
405 405  )))
406 406  
407 407  === Logic count ===
... ... @@ -795,6 +795,37 @@
795 795  If there is the “HVIL error”, the **“Critical error”** is generated.
796 796  )))
797 797  
823 +=== Battery voltage ===
824 +
825 +The BMS Main 3 allows to control the difference between sum of all cell voltages and voltage measured before the contactors.
826 +
827 +To change the voltage difference check parameters, select the "Protections → Battery voltage" section:
828 +
829 +[[image:1755871661259-633.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="100" width="800"]]
830 +
831 +In this section:
832 +
833 +* Enable – a flag to enable the protection;
834 +* Abnormal voltage difference – a maximum difference between sum of all cell voltages and voltage measured before the contactors (High voltage 1), V;
835 +* Delay before setting the error, second;
836 +* Delay before clearing the error, second;
837 +* Lock – a flag to block the error until the device is restarted.
838 +
839 +If there is a mismatch between voltages, "Battery voltage mismatch" error is generated.
840 +
841 +Error generation conditions:
842 +
843 +* 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.
844 +
845 +Conditions for removing the error:
846 +
847 +* 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.
848 +
849 +(% class="box warningmessage" %)
850 +(((
851 +If there is the “Battery voltage mismatch” error, the **“Critical error”** is generated.
852 +)))
853 +
798 798  === Critical error ===
799 799  
800 800  Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
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