Changes for page 3.6 Battery protection
Last modified by Admin on 2025/04/09 12:25
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... ... @@ -279,147 +279,20 @@ 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 -((( 284 284 **If there is the “Current sensor error”, the “Critical error” is generated and all relays open.** 285 -))) 286 286 287 287 == 3.6.10 Short circuit protection == 288 288 289 -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 - 320 320 == 3.6.11 Contactor high temperature protection == 321 321 322 -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 - 353 353 == 3.6.12 Unallowable charging protection == 354 354 355 -The BMS can detect that the battery is charging through the discharging circuit and protectively open the discharging relay to prevent unallowable battery operation. 356 - 357 -To change the parameters of the unallowable charging protection, select the menu "Protections → Unallowable charging protection": 358 - 359 - 360 -In this section: 361 - 362 -* Enable – a flag to enable the protection; 363 -* Delay before setting the error, second; 364 -* Delay before clearing the error, second; 365 -* Lock the error until the device is reset. 366 - 367 -If there is charging the battery through the discharging circuit detected, the "Unallowable charging" error is generated. 368 - 369 -Error generation conditions: 370 - 371 -* the charging relay is open and the battery current is not zero during the “Delay before setting the error” time. 372 - 373 -Conditions for removing the error: 374 - 375 -* the battery current is zero during the “Delay before clearing the error” time. 376 - 377 -(% class="box infomessage" %) 378 -((( 379 -If there is the "Unallowable charging" error, the discharging relay opens. 380 -))) 381 - 382 382 == 3.6.13 Stuck contactor protection == 383 383 384 -The BMS Main 2.x protects contactors against sticking. 385 - 386 -To change the protection parameters against sticking, select the menu "Protections → Stuck contactor protection": 387 - 388 - 389 -In this section: 390 - 391 -* Enable – a flag to enable the protection; 392 -* Delay before setting the error, second; 393 -* Delay before clearing the error, second; 394 -* Lock the error until the device is reset; 395 - 396 -If there is a stuck contactor, the “Stuck contactor” error is generated. 397 - 398 -Error generation conditions: 399 - 400 -* charging and discharging contactors are open, but the “Charging current present” or “Discharging current present” signal is set. 401 - 402 402 == 3.6.14 Contactor feedback check == 403 403 404 -The BMS Main 2.x can receive feedback signals from contactors and detect discrepancy between the control value and the feedback signal. To enable specific contactor protection, one of the discrete input must be set as corresponding contactor feedback signal (see section Input and output signals). 405 - 406 -To change the contactor feedback check parameters, select the menu "Protections → Contactor feedback check": 407 - 408 - 409 -In this section: 410 - 411 -* Enable – a flag to enable the protection; 412 -* Delay before setting the error, second; 413 -* Delay before clearing the error, second; 414 -* Lock the error until the device is reset; 415 - 416 -If there is a discrepancy at any contactor, the corresponding contactor feedback error is generated. Error generation conditions: 417 - 418 -* discrete output of charging, precharge, discharging, charging/discharging or main contactor not matches its feedback value. 419 - 420 420 == 3.6.15 Charging contactor cycles protection == 421 421 422 - 423 423 == 3.6.16 Discharging contactor cycles protection == 424 424 425 425 == 3.6.17 Temperature sensor error ==