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Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57
From version 14.1
edited by Admin
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To version 8.3
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215 215  
216 216  Protection against current unbalance of battery modules is configured in the section "Protections - Current unbalance":
217 217  
218 -[[image:Battery management systems.BMS Main 3X.3\. Configuration.3\.4 Protections.WebHome@1734090244843-403.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="116" width="800"]]
218 +[[image:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
219 219  
220 220  In this section:
221 221  
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226 226  * Check all the time (not only in the ‘Balancing’ state) – a flag to enable voltage check not only in “Balancing” state;
227 227  * Lock – a flag to block the error until the device is restarted.
228 228  
229 -As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated.
229 +As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated. Conditions for generating the error:
230 230  
231 -Conditions for generating the error:
232 -
233 233  * the current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
234 234  
235 235  Conditions for clearing the error:
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236 236  
237 237  * the current of the battery module is less than the "Maximum current" value during the "Delay before clearing the error" time.
238 238  
239 -(% class="box infomessage" %)
237 +(% class="box warningmessage" %)
240 240  (((
241 -If there is the “Current unbalance (CH)” or "Current unbalance (DCH)" error, **corresponding battery module opens its charging or discharging contactor**.
239 +If there is the “Current unbalance” error, **corresponding battery module opens its discharging contactor**.
242 242  )))
243 243  
244 244  === Charging current unbalance (in “Charging” state) ===
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257 257  * Delay before clearing the error;
258 258  * Lock – a flag to block the error until the device is restarted.
259 259  
260 -As a result of the operation of the protection the “Charging current unbalance” are generated.
258 +As a result of the operation of the protection the “Charging current unbalance” are generated. Conditions for generating the errors:
261 261  
262 -Conditions for generating the errors:
263 -
264 264  * battery module is not included in the largest group of modules whose charge currents differ from each other by no more than "Delta current" during the "Delay before setting the error" time.
265 265  
266 266  Conditions for clearing the error:
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288 288  * Delay before clearing the error;
289 289  * Lock – a flag to block the error until the device is restarted.
290 290  
291 -As a result of the operation of the protection the “Discharging current unbalance” are generated.
287 +As a result of the operation of the protection the “Discharging current unbalance” are generated. Conditions for generating the errors:
292 292  
293 -Conditions for generating the errors:
294 -
295 295  * battery module is not included in the largest group of modules whose discharge currents differ from each other by no more than "Delta current" during the "Delay before setting the error" time.
296 296  
297 297  Conditions for clearing the error:
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303 303  If there is the “Discharging current unbalance” error, **corresponding battery module opens its discharging contactor**.
304 304  )))
305 305  
306 -=== High contactor temperature ===
300 +=== Critical error ===
307 307  
308 -The BMS Main X device protects power contactors from overheating. To measure the temperature of the contactor, one of the thermistors connected to the X5 connector is used.
302 +Parameters for generating the critical error are configured in the "Protections - Critical error" section:
309 309  
310 -To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
304 +[[image:1734356802719-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="69" width="600"]]
311 311  
312 -[[image:1740756362809-292.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
313 -
314 314  In this section:
315 315  
316 -* Enable – a flag to enable the protection;
317 -* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
318 -* Maximum contactor temperature, °C;
319 -* Tolerant contactor temperature, °C;
320 -* Delay before setting the error, second;
321 -* Delay before clearing the error, second;
308 +* Enable – a flag to enable the protection;
309 +* Delay before setting the error;
310 +* Delay before clearing the error;
322 322  * Lock – a flag to block the error until the device is restarted.
323 323  
324 -If there is a contactor overheat, the "High contactor temperature" error is generated.
313 +The critical error flag is generated if at least one of the following errors persists during the "Delay before setting the error" time:
325 325  
326 -Error generation conditions:
315 +* «Battery cover»;
316 +* «Insulation fault»;
317 +* «CH contactor feedback error»;
318 +* «DCH contactor feedback error»;
319 +* «CH/DCH contactor feedback error»;
320 +* «Module offline».
327 327  
328 -* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
322 +The critical error flag is cleared if there are no errors from the list above during the "Delay before clearing the error" time.
329 329  
330 -Conditions for removing the error:
331 -
332 -* the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
333 -
334 -=== WDT reset ===
335 -
336 -If the BMS firmware hangs, the watchdog timer resets the device. The BMS can detect that the device was reset and generates the “WDT reset” error.
337 -
338 -To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
339 -
340 -[[image:Battery management systems.BMS Main 3X.3\. Configuration.3\.4 Protections.WebHome@1734090244845-157.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="93" width="800"]]
341 -
342 -In this section:
343 -
344 -* Enable – a flag to enable the protection;
345 -* Delay before clearing the error, second;
346 -* Lock – a flag to block the error until the device is restarted.
347 -
348 -Conditions for removing the error:
349 -
350 -* the “Delay before clearing the error” time has passed from the device startup.
351 -
352 352  (% class="box warningmessage" %)
353 353  (((
354 -If there is the "WDT reset" error, **“Critical error” is generated.**
326 +**When the critical error flag is present, all battery contactors open.**
355 355  )))
356 -
357 -=== Critical error ===
358 -
359 -Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
360 -
361 -To change the critical error parameters, select the "Protections → Critical error" section:
362 -
363 -[[image:1740756532131-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
364 -
365 -In this section:
366 -
367 -* Enable – a flag to enable the protection;
368 -* Delay before setting the error;
369 -* Delay before clearing the error;
370 -* Lock – a flag to block the error until the device is restarted.
371 -
372 -The "Critical error" signal is generated if at least one of the critical errors (see [[Errors>>doc:Battery management systems.Additional information.2\. Strings controllers\: signals and errors.WebHome||anchor="HErrors"]]) is generated during the “Delay before setting the error” time.
373 -
374 -The “Critical error" signal is cleared if there are no errors from the list above during the “Delay before clearing the error” time.
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