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METHOD FOR PERFORMING CELL BALANCING OF A BATTERY SYSTEM BASED ON CELL CAPACITY VALUES

  • US 20140114594A1
  • Filed: 10/22/2012
  • Published: 04/24/2014
  • Est. Priority Date: 10/22/2012
  • Status: Active Grant
First Claim
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1. A method for calculating a charge to balance for cells in a multi-cell battery comprising:

  • determining a depletion-goal state of charge for the cells in the battery;

    receiving a corresponding set of charge capacities and a corresponding set of actual charges for a set of cells in the battery;

    determining a corresponding set of depletion-goal charges and a corresponding set of usable charges for the set of cells, where the depletion-goal charge is determined using the corresponding charge capacity, and the usable charge is determined using the corresponding actual charge and the corresponding depletion-goal charge;

    determining a charge-bias using the set of usable charges; and

    calculating a corresponding set of charges to balance from the set of usable charges and the charge-bias for the set of cells.

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