Changes for page 3.3 Control
Last modified by Admin on 2025/04/09 12:14
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... ... @@ -275,7 +275,6 @@ 275 275 276 276 I,,continuous,, = Maximum CONTINUOUS charge current × K,,cc,, 277 277 278 - 279 279 === Discharge map (PEAK & CONTINUOUS) === 280 280 281 281 The BMS Main 3 has an alternative algorithm for the maximum allowed discharging current based on peak and continuous battery operating modes. ... ... @@ -303,6 +303,82 @@ 303 303 304 304 I,,continuous,, = Maximum CONTINUOUS discharge current × K,,dc,, 305 305 305 +=== Main contactor === 306 + 307 +The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors. 308 + 309 +The Main contactor algorithm supports the following modes: 310 + 311 +* Always on; 312 +* Automatic; 313 +* On demand. 314 + 315 +In “Always on” mode main contactor closes if all the following is true: 316 + 317 +* Charging contactor is open; 318 +* Discharging contactor is open; 319 +* There are no errors from the list below: 320 +** Overcurrent; 321 +** Undervoltage; 322 +** Overvoltage; 323 +** High temperature (CH); 324 +** High temperature (DCH); 325 +** Unallowable charging; 326 +** Critical error. 327 + 328 +In “Always on” mode main contactor opens if all the following is true: 329 + 330 +* Charging contactor is open; 331 +* Discharging contactor is open; 332 +* There is an error from the list below: 333 +** Overcurrent; 334 +** Undervoltage; 335 +** Overvoltage; 336 +** High temperature (CH); 337 +** High temperature (DCH); 338 +** Unallowable charging; 339 +** Critical error. 340 + 341 +In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors. 342 + 343 +In “On demand” mode, the main contactor closes by external the “Close Main contactor” request. 344 + 345 +To change the parameters of the main contactor, select the "Control → Main contactor" section: 346 + 347 +[[image:1733322872744-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]] 348 + 349 +In this section: 350 + 351 +* Enable – a flag to enable the main contactor control; 352 +* Algorithm – main contactor control algorithm: 353 +** Always on – contactor is always closed; 354 +** Automatic – contactor closes by internal charge and discharge algorithms; 355 +** On demand – contactor is closed by an external request; 356 +* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed; 357 +* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s; 358 +* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset. 359 + 360 +=== Charging status === 361 + 362 +* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared; 363 +* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set; 364 +* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0. 365 + 366 +(% class="box infomessage" %) 367 +((( 368 +**Note:** The allow charging ышптфд closes under two independent conditions: 369 +1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 370 +2) the "Delay before recharging" time has passed since the opening of the allow charging contactor. 371 +))) 372 + 373 +=== Discharging status === 374 + 375 +TBA 376 + 377 +=== Precharge === 378 + 379 +TBA 380 + 306 306 === Charge === 307 307 308 308 There are two contactors that serve charging the battery: a charging contactor and an allow charging contactor. With the help of the allow charging contactor, the BMS commands the charger to start or stop charging. ... ... @@ -368,16 +368,11 @@ 368 368 * Current corresponding to no charging – a current level to clear the "Charging current present" signal, A; 369 369 * Delay before starting charging – a time delay T,,on,, before closing the charging contactor and the allow charging contactor, millisecond; 370 370 * Delay before stopping charging – a time delay T,,off,, before opening the charging contactor, millisecond; 446 +* Control the precharging contactor – a flag that allows control of the precharging contactor; 371 371 * Use custom delays before stopping charging (on errors) – a flag to enable manual settings of time delays T,,off,, for specific errors; 372 372 * Custom delay: <error> – specific error delay, millisecond; 373 373 * Switch off the charging contactor on errors without delay – a flag to protectively open the charging contactor without a delay. In the opposite case, when an error is detected, the charging contactor opens always with the delay “Delay before stopping charging”; 374 -* Control the precharging contactor – a flag that allows control of the precharging contactor; 375 -* Voltage to clear the “Ready to charge” – a threshold voltage level on the cell, V; if the voltage of any cell is above this level, the “Ready to charge” (hence, the “Allow charging”) signal is cleared; 376 -* Voltage to reset the “Ready to charge” – a tolerant voltage level on the cell, V; if all cell voltages are below the tolerant level, the “Ready to charge” (hence, the “Allow charging”) signal is set; 377 -* Delay before recharging – a time after which the previously opened the allow charging contactor closes again, minute; to disable the operation by timeout set "Delay before recharging" to 0. 378 378 379 -Note – The allow charging contactor closes under two independent conditions: 1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and 2) the "Delay before recharging" time has passed since the opening of the allow charging contactor. 380 - 381 381 === Discharge === 382 382 383 383 The device controls the discharging contactor to connect battery to the load. ... ... @@ -491,61 +491,6 @@ 491 491 * Maximum voltage – maximum battery voltage, V; 492 492 * Switch off the discharging (AUX) contactor on errors – the auxiliary (AUX) discharging contactor opens if the following errors occur: Undervoltage, Overcurrent, High temperature (DCH), Short circuit, Critical error. 493 493 494 -=== Main contactor === 495 - 496 -The BMS Main 3 device controls the main contactor. The main contactor is usually placed in the common (minus) battery line for opening the charge and discharge circuits in case of sealing of the charging or discharging contactors. 497 - 498 -The Main contactor algorithm supports the following modes: 499 - 500 -* Always on; 501 -* Automatic; 502 -* On demand. 503 - 504 -In “Always on” mode main contactor closes if all the following is true: 505 - 506 -* Charging contactor is open; 507 -* Discharging contactor is open; 508 -* There are no errors from the list below: 509 -** Overcurrent; 510 -** Undervoltage; 511 -** Overvoltage; 512 -** High temperature (CH); 513 -** High temperature (DCH); 514 -** Unallowable charging; 515 -** Critical error. 516 - 517 -In “Always on” mode main contactor opens if all the following is true: 518 - 519 -* Charging contactor is open; 520 -* Discharging contactor is open; 521 -* There is an error from the list below: 522 -** Overcurrent; 523 -** Undervoltage; 524 -** Overvoltage; 525 -** High temperature (CH); 526 -** High temperature (DCH); 527 -** Unallowable charging; 528 -** Critical error. 529 - 530 -In “Automatic” mode, the main contactor closes by internal charging and discharging algorithms at the same time with Precharging, Charging and Discharging contactors. 531 - 532 -In “On demand” mode, the main contactor closes by external the “Close Main contactor” request. 533 - 534 -To change the parameters of the main contactor, select the "Control → Main contactor" section: 535 - 536 -[[image:1733322872744-536.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="105" width="800"]] 537 - 538 -In this section: 539 - 540 -* Enable – a flag to enable the main contactor control; 541 -* Algorithm – main contactor control algorithm: 542 -** Always on – contactor is always closed; 543 -** Automatic – contactor closes by internal charge and discharge algorithms; 544 -** On demand – contactor is closed by an external request; 545 -* Time to keep the contactor closed before closing the others – a time for other contactors to be open after the main contactor is closed; 546 -* Delay before opening the contactor – a time which is used to detect conditions for opening the contactor, s; 547 -* Keep the contactor open until the device is restarted – a flag for keeping the main contactor open until the system is reset. 548 - 549 549 === Cell balancing === 550 550 551 551 Balancing makes the voltage of all cells equal to the minimum cell voltage.