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Changes for page 3.4 Protections

Last modified by Admin on 2025/06/11 15:57
From version 8.7
edited by Admin
on 2025/02/28 15:24
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To version 16.1
edited by Admin
on 2025/03/18 09:53
Change comment: There is no comment for this version

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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 +209,8 @@
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 +If there is the “Voltage unbalance (CH)” or "Voltage unbalance (DCH)" error, **corresponding battery module opens its charging or discharging contactor**.
213 +
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.
... ... @@ -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:
231 +As a result of the operation of the current unbalance protection the errors “Current unbalance (CH)” and “Current unbalance (DCH)” are generated.
230 230  
233 +Conditions for generating the error:
234 +
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:
... ... @@ -255,8 +255,10 @@
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:
262 +As a result of the operation of the protection the “Charging current unbalance” are generated.
259 259  
264 +Conditions for generating the errors:
265 +
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:
... ... @@ -284,8 +284,10 @@
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:
293 +As a result of the operation of the protection the “Discharging current unbalance” are generated.
288 288  
295 +Conditions for generating the errors:
296 +
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:
... ... @@ -299,6 +299,32 @@
299 299  
300 300  === High contactor temperature ===
301 301  
310 +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.
311 +
312 +To change the overheating protection parameters of power contactors, select the "Protections → High contactor temperature" section:
313 +
314 +[[image:1740756362809-292.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="161" width="800"]]
315 +
316 +In this section:
317 +
318 +* Enable – a flag to enable the protection;
319 +* Thermistor – a selection of which cell thermistor will be used as contactor temperature sensor;
320 +* Maximum contactor temperature, °C;
321 +* Tolerant contactor temperature, °C;
322 +* Delay before setting the error, second;
323 +* Delay before clearing the error, second;
324 +* Lock – a flag to block the error until the device is restarted.
325 +
326 +If there is a contactor overheat, the "High contactor temperature" error is generated.
327 +
328 +Error generation conditions:
329 +
330 +* the contactor temperature is greater than the “Maximum contactor temperature” value during the “Delay before setting the error” time.
331 +
332 +Conditions for removing the error:
333 +
334 +* the contactor temperature is lower than the “Tolerant contactor temperature” value during the “Delay before clearing the error” time.
335 +
302 302  === WDT reset ===
303 303  
304 304  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.
... ... @@ -305,12 +305,31 @@
305 305  
306 306  To change the parameters of the watchdog protection, select the "Protections → WDT reset" section:
307 307  
342 +[[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"]]
343 +
344 +In this section:
345 +
346 +* Enable – a flag to enable the protection;
347 +* Delay before clearing the error, second;
348 +* Lock – a flag to block the error until the device is restarted.
349 +
350 +Conditions for removing the error:
351 +
352 +* the “Delay before clearing the error” time has passed from the device startup.
353 +
354 +(% class="box warningmessage" %)
355 +(((
356 +If there is the "WDT reset" error, **“Critical error” is generated.**
357 +)))
358 +
308 308  === Critical error ===
309 309  
310 -Parameters for generating the critical error are configured in the "Protections - Critical error" section:
361 +Some of the errors are system critical. A separate signal named "Critical error" indicates a BMS fault.
311 311  
312 -[[image:1734356802719-477.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="69" width="600"]]
363 +To change the critical error parameters, select the "Protections → Critical error" section:
313 313  
365 +[[image:1740756532131-419.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="118" width="800"]]
366 +
314 314  In this section:
315 315  
316 316  * Enable – a flag to enable the protection;
... ... @@ -318,18 +318,6 @@
318 318  * Delay before clearing the error;
319 319  * Lock – a flag to block the error until the device is restarted.
320 320  
321 -The critical error flag is generated if at least one of the following errors persists during the "Delay before setting the error" time:
374 +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.
322 322  
323 -* «Battery cover»;
324 -* «Insulation fault»;
325 -* «CH contactor feedback error»;
326 -* «DCH contactor feedback error»;
327 -* «CH/DCH contactor feedback error»;
328 -* «Module offline».
329 -
330 -The critical error flag is cleared if there are no errors from the list above during the "Delay before clearing the error" time.
331 -
332 -(% class="box warningmessage" %)
333 -(((
334 -**When the critical error flag is present, all battery contactors open.**
335 -)))
376 +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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