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Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57
From version 8.2
edited by Admin
on 2025/02/28 15:22
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To version 18.1
edited by Admin
on 2025/04/04 12:00
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... ... @@ -168,11 +168,11 @@
168 168  
169 169  Error generation conditions:
170 170  
171 -* more than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main 3X device within “Delay before setting the error” time.
171 +* more than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main X device within “Delay before setting the error” time.
172 172  
173 173  Conditions for removing the error:
174 174  
175 -* less than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main 3X device within “Delay before clearing the error” time.
175 +* less than “Number of offline modules to set the error” battery modules do not respond to the commands of the BMS Main X device within “Delay before clearing the error” time.
176 176  
177 177  (% class="box warningmessage" %)
178 178  (((
... ... @@ -209,6 +209,11 @@
209 209  * battery module is in the largest group of balanced modules during the "Delay before clearing the error" time;
210 210  * module is ready to charge or discharge.
211 211  
212 +(% class="box infomessage" %)
213 +(((
214 +If there is the “Voltage unbalance (CH)” or "Voltage unbalance (DCH)" error, **corresponding battery module do not close its contactors while joining  to charge of discharge**.
215 +)))
216 +
212 212  === Current unbalance (in “Balancing” state) ===
213 213  
214 214  When battery modules are connected in parallel, the most charged modules transfer charge to the least charged modules. The process of charge transfer is accompanied by the flow of balancing currents. The BMS Main X device detects modules with high balancing currents and generates “Current unbalance (CH)” (charge circuit) and “Current unbalance (DCH)” (discharge circuit) errors for them.
... ... @@ -215,7 +215,7 @@
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"]]
223 +[[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:
234 +As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated.
230 230  
236 +Conditions for generating the error:
237 +
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:
... ... @@ -234,7 +234,10 @@
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 -If there is the error "Current unbalance (CH)" ("Current unbalance (DCH)"), the charging (discharging) contactor of the battery module opens.
244 +(% class="box infomessage" %)
245 +(((
246 +If there is the “Current unbalance (CH)” or "Current unbalance (DCH)" error, **corresponding battery module opens its charging or discharging contactor**.
247 +)))
238 238  
239 239  === Charging current unbalance (in “Charging” state) ===
240 240  
... ... @@ -252,8 +252,10 @@
252 252  * Delay before clearing the error;
253 253  * Lock – a flag to block the error until the device is restarted.
254 254  
255 -As a result of the operation of the protection the “Charging current unbalance” are generated. Conditions for generating the errors:
265 +As a result of the operation of the protection the “Charging current unbalance” are generated.
256 256  
267 +Conditions for generating the errors:
268 +
257 257  * 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.
258 258  
259 259  Conditions for clearing the error:
... ... @@ -260,9 +260,12 @@
260 260  
261 261  * battery module is included in the largest group of modules with similar charge currents during the “Delay before clearing the error” time.
262 262  
263 -If there is the “Charging current unbalance” error, the battery module charging contactor opens.
275 +(% class="box infomessage" %)
276 +(((
277 +If there is the “Charging current unbalance” error, **corresponding battery module opens its charging contactor**.
278 +)))
264 264  
265 -=== Discharging current unbalance ===
280 +=== Discharging current unbalance (in “Discharging” state) ===
266 266  
267 267  During battery discharging, the currents of the battery modules may vary. The BMS Main X device detects modules whose discharging currents are significantly different from the currents of other modules and generates the “Discharging current unbalance” errors for them.
268 268  
... ... @@ -278,8 +278,10 @@
278 278  * Delay before clearing the error;
279 279  * Lock – a flag to block the error until the device is restarted.
280 280  
281 -As a result of the operation of the protection the “Discharging current unbalance” are generated. Conditions for generating the errors:
296 +As a result of the operation of the protection the “Discharging current unbalance” are generated.
282 282  
298 +Conditions for generating the errors:
299 +
283 283  * 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.
284 284  
285 285  Conditions for clearing the error:
... ... @@ -286,33 +286,77 @@
286 286  
287 287  * battery module is included in the largest group of modules with similar discharge currents during the “Delay before clearing the error” time.
288 288  
289 -If there is the “Discharging current unbalance” error, the battery module discharging contactor opens.
306 +(% class="box infomessage" %)
307 +(((
308 +If there is the “Discharging current unbalance” error, **corresponding battery module opens its discharging contactor**.
309 +)))
290 290  
291 -=== Critical error ===
311 +=== High contactor temperature ===
292 292  
293 -Parameters for generating the critical error are configured in the "Protections - Critical error" section:
313 +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.
294 294  
295 -[[image:1734356802719-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="69" width="600"]]
315 +To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
296 296  
317 +[[image:1740756362809-292.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
318 +
297 297  In this section:
298 298  
299 -* Enable – a flag to enable the protection;
300 -* Delay before setting the error;
301 -* Delay before clearing the error;
321 +* Enable – a flag to enable the protection;
322 +* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
323 +* Maximum contactor temperature, °C;
324 +* Tolerant contactor temperature, °C;
325 +* Delay before setting the error, second;
326 +* Delay before clearing the error, second;
302 302  * Lock – a flag to block the error until the device is restarted.
303 303  
304 -The critical error flag is generated if at least one of the following errors persists during the "Delay before setting the error" time:
329 +If there is a contactor overheat, the "High contactor temperature" error is generated.
305 305  
306 -* «Battery cover»;
307 -* «Insulation fault»;
308 -* «CH contactor feedback error»;
309 -* «DCH contactor feedback error»;
310 -* «CH/DCH contactor feedback error»;
311 -* «Module offline».
331 +Error generation conditions:
312 312  
313 -The critical error flag is cleared if there are no errors from the list above during the "Delay before clearing the error" time.
333 +* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
314 314  
335 +Conditions for removing the error:
336 +
337 +* the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
338 +
339 +=== WDT reset ===
340 +
341 +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.
342 +
343 +To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
344 +
345 +[[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"]]
346 +
347 +In this section:
348 +
349 +* Enable – a flag to enable the protection;
350 +* Delay before clearing the error, second;
351 +* Lock – a flag to block the error until the device is restarted.
352 +
353 +Conditions for removing the error:
354 +
355 +* the “Delay before clearing the error” time has passed from the device startup.
356 +
315 315  (% class="box warningmessage" %)
316 316  (((
317 -**When the critical error flag is present, all battery contactors open.**
359 +If there is the "WDT reset" error, **“Critical error” is generated.**
318 318  )))
361 +
362 +=== Critical error ===
363 +
364 +Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
365 +
366 +To change the critical error parameters, select the "Protections → Critical error" section:
367 +
368 +[[image:1740756532131-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
369 +
370 +In this section:
371 +
372 +* Enable – a flag to enable the protection;
373 +* Delay before setting the error;
374 +* Delay before clearing the error;
375 +* Lock – a flag to block the error until the device is restarted.
376 +
377 +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.
378 +
379 +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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