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Changes for page 3.4 Protections

Last modified by Admin on 2025/11/06 10:39
From version 41.1
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on 2025/10/14 09:37
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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.
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408 408  
409 409  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:
410 410  
411 -[[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"]]
412 412  
413 413  In this section:
414 414  
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415 415  * Enable – a flag to enable the protection;
416 416  * Logic count – a number of BMS Logic devices connected to the BMS Main;
417 417  * 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;
418 418  * Lock – lock the error until the device is reset.
419 419  
420 420  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.
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421 421  
422 422  Error generation conditions:
423 423  
424 -* the number of BMS Logic devices connected to the BMS Main is **not equal** to the “Logic count” value.
451 +* after the initialization the number of BMS Logic devices connected to the BMS Main is **not equal** to the “Logic count” value.
425 425  
426 426  Conditions for removing the error:
427 427  
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