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Changes for page 3.4 Protections

Last modified by Admin on 2026/04/27 13:04
From version 30.1
edited by Admin
on 2026/04/27 13:04
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To version 15.1
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on 2025/04/09 12:23
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... ... @@ -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.
... ... @@ -252,36 +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 -[[image:1777295045614-956.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="136" width="800"]]In this section:
262 -
263 -* Enable – a flag to enable the protection;
264 -* Maximum temperature, °C;
265 -* Tolerant temperature, °C;
266 -* Delay before setting the error, second;
267 -* Delay before clearing the error, second;
268 -* Lock – lock the error until the device is reset.
269 -
270 -As a result of the operation of the protection from high temperatures of BMS Mini device, the "High board temperature" is generated.
271 -
272 -Error generation conditions:
273 -
274 -* a BMS Mini device temperature is higher than the “Maximum temperature” value.
275 -
276 -Conditions for removing the error:
277 -
278 -* a BMS Mini device temperature is less than the “Tolerant temperature” value.
279 -
280 -(% class="box infomessage" %)
281 -(((
282 -Cell balancing is disabled on BMS Mini device with high temperature.
283 -)))
284 -
285 285  === Cell monitor offline ===
286 286  
287 287  The BMS Mini device checks if there is connection with cell monitor and set an error if not.
... ... @@ -339,35 +339,6 @@
339 339  If there is the "Cell count error", the **“Critical error” **is generated.
340 340  )))
341 341  
342 -=== Temperature sensor count ===
343 -
344 -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:
345 -
346 -[[image:1762773073782-768.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="130" width="800"]]
347 -
348 -In this section:
349 -
350 -* Enable – a flag to enable the protection;
351 -* Number of cells – a number of temperature sensors connected to the BMS;
352 -* Delay before setting the error, millisecond;
353 -* Delay before clearing the error, second;
354 -* Lock – a flag to block the error until the device is restarted.
355 -
356 -As a result of the operation of the protection from the mismatch of the number of cells, the "T-sensor count error" is generated.
357 -
358 -Error generation conditions:
359 -
360 -* 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.
361 -
362 -Conditions for removing the error:
363 -
364 -* 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.
365 -
366 -(% class="box warningmessage" %)
367 -(((
368 -If there is the "T-sensor count error", the **“Critical error” **is generated**.**
369 -)))
370 -
371 371  === Short circuit ===
372 372  
373 373  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.
... ... @@ -463,24 +463,6 @@
463 463  If there is the “Current sensor error”, the **“Critical error” **is generated.
464 464  )))
465 465  
466 -=== MOSFET ===
467 -
468 -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:
469 -
470 -[[image:1762773566548-852.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]]
471 -
472 -In this section:
473 -
474 -* Delay before clearing the error, second;
475 -* Lock – a flag to block the error until the device is restarted.
476 -
477 -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.
478 -
479 -(% class="box warningmessage" %)
480 -(((
481 -If there is the "MOSFET error", the **“Critical error” **is generated.
482 -)))
483 -
484 484  === Charge contactor cycles ===
485 485  
486 486  The BMS Mini device protects the charging contactor against frequent switching.
... ... @@ -508,7 +508,7 @@
508 508  
509 509  * the “Delay before clearing the error” time has passed since the error was generated.
510 510  
511 -=== Discharge contactor cycles ===
407 +=== Discharge contactor cycles protection ===
512 512  
513 513  The BMS Mini device protects the discharging contactor against frequent switching.
514 514  
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683 683  
684 684  To change the critical error parameters, select the "Protections → Critical error" section:
685 685  
686 -[[image:1762775067035-203.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="143" width="800"]]
582 +[[image:1733748083469-183.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="101" width="800"]]
687 687  
688 688  In this section:
689 689  
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690 690  * Enable – a flag to enable the protection;
691 691  * Delay before setting the error, millisecond;
692 692  * Delay before clearing the error, second;
693 -* Errors 1,2 to ignore when setting the critical error;
694 694  * Lock – a flag to block the error until the device is restarted.
695 695  
696 696  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.
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