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Changes for page 3.6 Battery protection

Last modified by Admin on 2025/04/09 12:25
From version 4.14
edited by Admin
on 2024/11/21 18:18
Change comment: There is no comment for this version
To version 4.15
edited by Admin
on 2024/11/21 18:19
Change comment: There is no comment for this version

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... ... @@ -279,12 +279,77 @@
279 279  
280 280  * the voltage in the signal line or zero level line of the current sensor is in range from (Minimum voltage + Hysteresis voltage) to (Maximum voltage - Hysteresis voltage) during the “Delay before clearing the error” time.
281 281  
282 +(% class="box warningmessage" %)
283 +(((
282 282  **If there is the “Current sensor error”, the “Critical error” is generated and all relays open.**
285 +)))
283 283  
284 284  == 3.6.10 Short circuit protection ==
285 285  
289 +The BMS implements a protection of power circuits (contactors, power cables) against overheating caused by the flow of high current for a long time.
290 +
291 +To change the protection parameters from short circuit, select the menu "Protections → Short circuit protection":
292 +
293 +
294 +In this section:
295 +
296 +* Level 1, 2, 3 – three protection levels. The following parameters are configured at each level:
297 +** Enable – a flag to enable the protection;
298 +** Maximum current, A;
299 +** Delay before setting the error, second;
300 +* Delay before clearing the error, second;
301 +* Switch off the charging relay on error – a flag to open the charging relay when the "Short circuit" error occurs;
302 +* Switch off the discharging relay on error – a flag to open the discharging relay when the "Short circuit" error occurs;
303 +* Lock the error until the device is reset.
304 +
305 +If there is a short circuit, the "Short circuit" error is generated.
306 +
307 +Error generation conditions:
308 +
309 +* at any of the three protection levels, the current modulo is greater than the “Maximum current” value during the “Delay before setting the error” time.
310 +
311 +Conditions for removing the error:
312 +
313 +* the current modulo is lower than the “Maximum current” values for all three protection levels during the “Delay before setting the error” time.
314 +
315 +(% class="box infomessage" %)
316 +(((
317 +If there is the "Short circuit" error, the charging relay opens (the “Switch off the charging relay on error” flag is set) and the discharging relay opens (the “Switch off the discharging relay on error flag” is set).
318 +)))
319 +
286 286  == 3.6.11 Contactor high temperature protection ==
287 287  
322 +The BMS protects power contactors from overheating. To measure the temperature of the contactor, a thermistor is used, connected to the P13 connector of the board. Configuring of the analog input for temperature measurement is described in section Input signals.
323 +
324 +To change the overheating protection parameters of power contactors, select the menu "Protections → Contactor high temperature protection":
325 +
326 +
327 +In this section:
328 +
329 +* Enable – a flag to enable the protection;
330 +* Maximum temperature, °C;
331 +* Tolerant temperature, °C;
332 +* Delay before setting the error, second;
333 +* Delay before clearing the error, second;
334 +* Switch off the charging relay on error – a flag to open the charging relay when the "Contactor high temperature" error occurs;
335 +* Switch off the discharging relay on error – a flag to open the discharging relay when the "Contactor high temperature" error occurs;
336 +* Lock the error until the device is reset.
337 +
338 +If there is a contactor overheat, the "Contactor high temperature" error is generated.
339 +
340 +Error generation conditions:
341 +
342 +* the contactor temperature is greater than the “Maximum temperature” value during the “Delay before setting the error” time.
343 +
344 +Conditions for removing the error:
345 +
346 +* the contactor temperature is lower than the “Tolerant temperature” value during the “Delay before clearing the error” time.
347 +
348 +(% class="box infomessage" %)
349 +(((
350 +If there is the "Contactor high temperature" error, the charging relay opens (the “Switch off the charging relay on error” flag is set) and the discharging relay opens (the “Switch off the discharging relay on error flag” is set).
351 +)))
352 +
288 288  == 3.6.12 Unallowable charging protection ==
289 289  
290 290  == 3.6.13 Stuck contactor protection ==