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Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57
From version 8.3
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To version 13.1
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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:1734356793451-440.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="103" width="800"]]
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"]]
219 219  
220 220  In this section:
221 221  
... ... @@ -226,8 +226,10 @@
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. Conditions for generating the error:
229 +As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated.
230 230  
231 +Conditions for generating the error:
232 +
231 231  * the current of the battery module is greater than the "Maximum current" value during the "Delay before setting the error" time.
232 232  
233 233  Conditions for clearing the error:
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234 234  
235 235  * the current of the battery module is less than the "Maximum current" value during the "Delay before clearing the error" time.
236 236  
237 -(% class="box warningmessage" %)
239 +(% class="box infomessage" %)
238 238  (((
239 -If there is the “Current unbalance” error, **corresponding battery module opens its discharging contactor**.
241 +If there is the “Current unbalance (CH)” or "Current unbalance (DCH)" error, **corresponding battery module opens its charging or discharging contactor**.
240 240  )))
241 241  
242 242  === Charging current unbalance (in “Charging” state) ===
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255 255  * Delay before clearing the error;
256 256  * Lock – a flag to block the error until the device is restarted.
257 257  
258 -As a result of the operation of the protection the “Charging current unbalance” are generated. Conditions for generating the errors:
260 +As a result of the operation of the protection the “Charging current unbalance” are generated.
259 259  
262 +Conditions for generating the errors:
263 +
260 260  * 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.
261 261  
262 262  Conditions for clearing the error:
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284 284  * Delay before clearing the error;
285 285  * Lock – a flag to block the error until the device is restarted.
286 286  
287 -As a result of the operation of the protection the “Discharging current unbalance” are generated. Conditions for generating the errors:
291 +As a result of the operation of the protection the “Discharging current unbalance” are generated.
288 288  
293 +Conditions for generating the errors:
294 +
289 289  * 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.
290 290  
291 291  Conditions for clearing the error:
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297 297  If there is the “Discharging current unbalance” error, **corresponding battery module opens its discharging contactor**.
298 298  )))
299 299  
306 +=== High contactor temperature ===
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.
309 +
310 +To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
311 +
312 +[[image:1740756362809-292.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
313 +
314 +In this section:
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;
322 +* Lock – a flag to block the error until the device is restarted.
323 +
324 +If there is a contactor overheat, the "High contactor temperature" error is generated.
325 +
326 +Error generation conditions:
327 +
328 +* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
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 +If there is the "WDT reset" error, **“Critical error” is generated.**
353 +
300 300  === Critical error ===
301 301  
302 -Parameters for generating the critical error are configured in the "Protections - Critical error" section:
356 +Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
303 303  
304 -[[image:1734356802719-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="69" width="600"]]
358 +To change the critical error parameters, select the "Protections → Critical error" section:
305 305  
360 +[[image:1740756532131-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
361 +
306 306  In this section:
307 307  
308 308  * Enable – a flag to enable the protection;
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310 310  * Delay before clearing the error;
311 311  * Lock – a flag to block the error until the device is restarted.
312 312  
313 -The critical error flag is generated if at least one of the following errors persists during the "Delay before setting the error" time:
369 +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.
314 314  
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».
321 -
322 -The critical error flag is cleared if there are no errors from the list above during the "Delay before clearing the error" time.
323 -
324 -(% class="box warningmessage" %)
325 -(((
326 -**When the critical error flag is present, all battery contactors open.**
327 -)))
371 +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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