Changes for page 3.3 Control

Last modified by Admin on 2026/04/30 15:56

From version 87.9
edited by Admin
on 2026/04/02 10:28
Change comment: There is no comment for this version
To version 82.1
edited by Admin
on 2026/04/02 09:29
Change comment: There is no comment for this version

Summary

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... ... @@ -29,7 +29,7 @@
29 29  ** **Summation of cell voltages** – the overall voltage is calculated as on sum of all cells in the battery;
30 30  ** **Using voltage before contactors** – the overall voltage is estimated as voltage before contactors measured by BMS.
31 31  
32 -The **"Parallel-Serial"** connection works as follows: a bunch of serial connected Logics are grouped into chains. A bunch of parallel connected chains are grouped to blocks. A bunch of serial connected blocks are grouped into string. By configuring the corresponding settings it is possible to create a complex string configuration. Current through each chain will be calculated as overall string current divided by number of chains in a block.
32 +The **"Parallel-Serial"** connection works as follows: a bunch of serial connected Logics are grouped into chains. A bunch of parallel connected chains are grouped to blocks. A bunch of serial connected blocks are grouped into string. By configuring the corresponding settings it is possible to create a complex string configuration. Current through each chain will be estimated as a fraction of overall current accordingly to the number of chains in a block.
33 33  
34 34  The values **“Capacity”** and **“Resistance”** are used to calculate the SOC of cells and the battery.
35 35  
... ... @@ -39,7 +39,7 @@
39 39  
40 40  === SOC estimation ===
41 41  
42 -The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell by using following algorithms:
42 +The BMS Main 3 / BMS Main 2R device calculates the state of charge (SOC) of each cell, and then the overall battery SOC, by using following algorithms:
43 43  
44 44  The **“Voltage”** SOC calculation algorithm calculates cells SOC based on the tabular dependence Uocv = Uocv(SOC, t °C).
45 45  
... ... @@ -94,7 +94,7 @@
94 94  
95 95  === SOH estimation ===
96 96  
97 -The BMS Main 3 / BMS Main 2R device calculates the state of health of the battery (SOH) using two algorithms:
97 +The BMS Main 3 device calculates the state of health of the battery (SOH) using two algorithms:
98 98  
99 99  In **"By effective capacity" **mode SOH is calculated as a ratio of effective capacity to nominal capacity. Effective capacity is estimated to DOD value when battery SOC reaches 0%, so SOH is recalculated each full battery discharge.
100 100  
... ... @@ -373,9 +373,9 @@
373 373  
374 374  (% class="box infomessage" %)
375 375  (((
376 -**Note:** The **"Allow charging"** signal activates under two independent conditions:
376 +**Note:** The "Allow charging" signal activates under two independent conditions:
377 377  1) the voltage on the cells reaches the “Voltage to reset the “Ready to charge"” level and
378 -2) the "Delay before recharging" time has passed since the clearing of the "Allow charging" signal.
378 +2) the "Delay before recharging" time has passed since the opening of the allow charging contactor.
379 379  )))
380 380  
381 381  === Discharging status ===
... ... @@ -402,9 +402,9 @@
402 402  
403 403  The BMS Main 3 / BMS Main 2R device can control the precharge contactor. The precharge contactor is used to charge the intermediate capacity with low current and usually placed with the limiting resistor in parallel to charging or discharging contactor.
404 404  
405 -BMS Main 3 can check the preacharge process by monitoring **the current and voltage difference** before and after contactors.
405 +BMS Main 3 can detect errors while pre-charging the load capacity by monitoring **the current and voltage difference** before and after contactors.
406 406  
407 -BMS Main 2R can check the preacharge process **only by monitoring the current**.
407 +BMS Main 2R can detect errors while pre-charging the load capacity **only by monitoring the current**.
408 408  
409 409  In **simple **mode precharge contactor closes a "Precharge time" before the closing of Charge or Discharge contactors and opens after the same amount of time after closing them.
410 410  
... ... @@ -431,7 +431,7 @@
431 431  * **Delay before clearing the "Precharge error"**, second;
432 432  * **Lock the "Precharge error"** – a flag to block the error until the device is restarted.
433 433  
434 -“Precharge error” generates if any of the following is true:
434 +“Precharge error” generation conditions if any of the following is true:
435 435  
436 436  * the precharge current does not decrease during the "Precharge time" after "Number of precharging attempts";
437 437  * voltages before and after contactors are not equal during the "Precharge time" after "Number of precharging attempts";
... ... @@ -444,31 +444,31 @@
444 444  
445 445  === Charge ===
446 446  
447 -The BMS Main 3 / BMS Main 2R device connect battery to the charger using the "Charging" signal.
447 +There are two signals that serve charging the battery: "Charging" and "Allow charging". With the help of the "Allow charging" signal, the BMS commands the charger to start or stop charging.
448 448  
449 449  BMS Main 3 / BMS Main 2R supports three charge control algorithms:
450 450  
451 -If the "**Always on**" algorithm is selected, the harging" signal ialways set. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
451 +If the "**Always on**" algorithm is selected, the charging contactor and the allow charging contactor are always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
452 452  
453 453  * Service reset;
454 454  * Power down request;
455 455  * Inhibit charging,
456 456  
457 -the "Charging" signal is cleared.
457 +both contactors are open (no current flows).
458 458  
459 459  When the algorithm "**On charger connected**" is selected, the control is performed as follows:
460 460  
461 -* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Charging" signal is set;
462 -* If the signal “Charger connected” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the "Charging" signal is cleared.
461 +* If there is a signal “Charger connected” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
462 +* If the signal “Charger connected” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens.
463 463  
464 464  When the "**On charge request**" algorithm selected, the control is performed as follows:
465 465  
466 -* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Charging" signal is set;
467 -* If the signal “Charge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the "Charging" signal is cleared;
466 +* If there is a signal “Charge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the charging contactor and the allow charging contactor close;
467 +* If the signal “Charge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), the allow charging contactor opens and after the delay time T,,off,, the charging contactor opens;
468 468  
469 469  (% class="box infomessage" %)
470 470  (((
471 -**Note: **when errors occur in the system, the **"Charing" **signal is cleared either immediately or with the delay T,,off,, (depends on the settings described below).
471 +**Note: **when errors occur in the system, the **Charge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
472 472  )))
473 473  
474 474  To change the parameters of the battery charge control algorithm, select the "Control → Charge" section:
... ... @@ -493,31 +493,31 @@
493 493  
494 494  === Discharge ===
495 495  
496 -The BMS Main 3 / BMS Main 2R device connect battery to the load using the "Discharging" signal.
496 +The BMS Main 3 / BMS Main 2R device controls the discharging contactor to connect battery to the load.
497 497  
498 498  BMS Main 3 / BMS Main 2R supports three algorithms to control battery discharging:
499 499  
500 -When the algorithm "**Always on**" is selected, the "Discharging" signal is always set. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
500 +When the algorithm "**Always on**" is selected, the discharging contactor is always closed. If at least one of the errors from the "Errors 1, 2 ..." bitfields appears or one of the signals:
501 501  
502 502  * Service reset
503 503  * Power down request
504 504  * Inhibit discharging
505 505  
506 -the "Discharging" signal is cleared.
506 +the discharging contactor opens.
507 507  
508 508  If the algorithm "**On charger disconnected**" is selected, the control is performed as follows:
509 509  
510 -* if there are no “Charger connected” and "Charging" signals and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Discharging" signal is set;
511 -* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the "Discharging" signal is cleared.
510 +* if there is no signal “Charger connected”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
511 +* If the signal “Charger connected” appears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
512 512  
513 513  When the "**On discharge request**" algorithm selected, the control is performed as follows:
514 514  
515 -* if there is signal “Discharge request” and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the "Discharging" signal is set;
516 -* If the signal “Discharge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the "Discharging" signal is cleared.
515 +* if there is signal “Discharge request”, the charging contactor is open and there are no errors (see the "Errors 1, 2 ..." bitfields), then through the delay time T,,on,, the discharging contactor closes;
516 +* If the signal “Discharge request” disappears or errors occur (see the "Errors 1, 2 ..." bitfields), then after the delay time T,,off,, the discharging contactor opens.
517 517  
518 518  (% class="box infomessage" %)
519 519  (((
520 -**Note: **when errors occur in the system, the **"Discharge" **signal is cleared either immediately or with the delay T,,off,, (depends on the settings described below).
520 +**Note: **when errors occur in the system, the **Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
521 521  )))
522 522  
523 523  To change the parameters of the battery discharge control algorithm, select the "Control → Discharge" section:
... ... @@ -542,7 +542,7 @@
542 542  
543 543  === Charge/Discharge ===
544 544  
545 -The BMS Main 3 / BMS Main 2R device can control the contactor, which combines algorithms of charging and discharging contactor.
545 +The BMS Main 3 / BMS Main 2R device can control the Charge/Discharge contactor, which combines algorithms of charging and discharging contactor.
546 546  
547 547  Charge/Discharge contactor has three algorithms of operation:
548 548