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Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:15
From version 25.2
edited by Admin
on 2025/02/24 12:25
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To version 27.4
edited by Admin
on 2025/02/24 12:33
Change comment: There is no comment for this version

Summary

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472 472  
473 473  The BMS Mini device can control the charging/discharging contactor that is used to both charge and discharge the battery.
474 474  
475 -The charging/discharging contactor combines algorithms of charging and discharging contactor. It behaves as a charging contactor when «Charge request» or «Charger connected» are set, otherwise – as a discharging contactor.
475 +Charge/Discharge contactor has three algorithms of operation:
476 476  
477 +* Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
478 +* Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
479 +* Independent (on Charge request or Discharge request) - Charge/Discharge contactor is based on its own controller that listen to Charge and Discharge requests and closes if one of these signals occurs.
480 +
481 +TBA
482 +
483 +(% class="box infomessage" %)
484 +(((
485 +**Note: **when errors occur in the system, the **Charge/Discharge **contactor opens either immediately or with the delay T,,off,, (depends on the settings described below).
486 +)))
487 +
477 477  The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
478 478  
479 -[[image:1733746901779-991.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="95" width="800"]]In this section:
490 +[[image:1740400166950-906.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="211" width="800"]]
480 480  
492 +In this section:
493 +
481 481  * Enable – a flag to enable the charge/discharge controller.
495 +* Algorithm:
496 +** Dependent (on Charging and Discharging signals) - Charge/Discharge contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor;
497 +** Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
498 +** Independent (on Charge request or Discharge request);
499 +* Delay before starting charging or discharging, millisecond;
500 +* Delay before stopping charging or discharging, millisecond;
501 +* Control the precharging contactor – a flag that enables control of precharging contactor while closing the charge/discharge contactor;
502 +* Emulate the "Charging" and "Discharging" signals – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor;
503 +* Errors 1, 2 to prevent CHARGING through charging/discharging contactor, Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor – bitfields to choose the errors which will open the charging/discharging contactor. This bitfields are combined by bitwise OR and intended to separate settings for charging and discharging processes;
504 +* Errors 1, 2 which affect the contactor only if battery CHARGING is detected – a bitfield to choose the errors which will trigger only if charging current is present. This bitfield is combined with "Errors 1, 2 to prevent CHARGING through charging/discharging contactor" by bitwise AND;
505 +* Errors 1, 2 which affect the contactor only if battery DISCHARGING is detected – a bitfield to choose the errors which will trigger only if discharging current is present. This bitfield is combined with "Errors 1, 2 to prevent DISCHARGING through charging/discharging contactor" by bitwise AND;
506 +* Switch off the charging/discharging contactor on errors without delay – a flag to protectively open the charging/discharging contactor without a delay. In the opposite case, when an error is detected, the charging/discharging contactor opens always with the delay “Delay before stopping discharging”.
482 482  
483 483  === Discharge (AUX) ===
484 484  
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494 494  
495 495  To change the parameters of the powering of external equipment, select the "Control → Discharge (AUX)" section:
496 496  
497 -[[image:1733746932199-845.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="137" width="800"]]
498 498  
523 +[[image:1740400254884-851.png||data-xwiki-image-style-alignment="center" data-xwiki-image-style-border="true" height="179" width="800"]]
499 499  In this section:
500 500  
501 501  * Enable – a flag to activate the auxiliary discharge control;
... ... @@ -502,13 +502,14 @@
502 502  * Switch off the discharging (AUX) contactor if the SOC is too low;
503 503  * Minimum SOC – a minimum SOC value, when reached, the auxiliary (AUX) discharging contactor opens, %;
504 504  * Tolerant SOC – a permissive SOC value, upon reaching which the auxiliary (AUX) discharging contactor re-closes, %;
530 +* Switch off the discharging (AUX) contactor if the cell voltage is out of the range;
531 +* Minimum cell voltage, V;
532 +* Maximum cell voltage, V;
505 505  * Switch off the discharging (AUX) contactor if the battery voltage is out of the range;
506 -* Minimum voltage – minimum battery voltage, V;
507 -* Maximum voltage – maximum battery voltage, V;
508 -* 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.
534 +* Minimum battery voltage, V;
535 +* Maximum battery voltage, V;
536 +* Errors 1, 2 to open the auxiliary discharging contactor – bitfields to choose the errors which will open the auxiliary discharging contactor.
509 509  
510 -=== ===
511 -
512 512  === Cell balancing ===
513 513  
514 514  Balancing makes the voltage of all cells be equal to the minimum cell voltage.
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