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Changes for page 3.3 Control

Last modified by Admin on 2025/04/09 12:14
From version 27.10
edited by Admin
on 2024/12/25 10:27
Change comment: There is no comment for this version
To version 29.1
edited by Admin
on 2024/12/26 10:41
Change comment: There is no comment for this version

Summary

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394 394  
395 395  The BMS Main 3 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.
396 396  
397 -BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors.
397 +BMS Main 3 device detects errors while pre-charging the load capacity by monitoring the current and voltage difference before and after contactors. Also BMS can measure the power dissipated on precharge resistor and generate an error if it greater than configured limit.
398 398  
399 399  To change the parameters of precharge contactor, select the "Control → Precharge" section:
400 400  
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576 576  
577 577  Charge/Discharge contactor has three algorithms of operation:
578 578  
579 -Dependent (on Charging and Discharging signals) - Charging/Discharging contactor depends on Charge and Discharge algorithms and their signals and behaves as Charging contactor if Charging signal is set, otherwise – as Discharging contactor.
579 +* 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;
580 +* Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
581 +* 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.
580 580  
581 581  The charging/discharging contactor control is configured in the “Control – Charge/Discharge” section:
582 582  
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585 585  In this section:
586 586  
587 587  * Enable – a flag to enable the charge/discharge controller.
590 +* Algorithm:
591 +** 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;
592 +** Independent (Always) - Charge/Discharge contactor is always closed if there is no errors;
593 +** Independent (on Charge request or Discharge request);
594 +* Delay before starting charging or discharging, millisecond;
595 +* Delay before stopping charging or discharging, millisecond;
596 +* Control the precharging contactor – a flag that enables control of precharging contactor while closing the charge/discharge contactor;
597 +* Emulate the "Charging" and "Discharging" signals – a flag to enable generation of "Charging" and "Discharging" signals when closing charge/discharge contactor;
598 +* 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;
599 +* 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;
600 +* 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;
601 +* 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”.
588 588  
589 589  === Discharge (AUX) ===
590 590  
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660 660  * Minimum cell voltage to start balancing, V;
661 661  * Voltage deviation to start balancing;
662 662  * Voltage deviation to stop balancing;
663 -* Voltage for forced balancing – if cell voltage is above this value, it will discharge through balancing resistor;
677 +* Voltage for forced balancing – if cell voltage is above this value, it will start discharging through balancing resistor;
664 664  * Maximum allowable temperature of BMS Logic devices, ºC;
665 665  * Command to discharge all cells – a flag to force the balancing of all cells.
666 666