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Systems and methods for battery charging and equalization

  • US 6,771,045 B1
  • Filed: 09/05/2002
  • Issued: 08/03/2004
  • Est. Priority Date: 09/05/2002
  • Status: Expired due to Fees
First Claim
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1. In a battery power system comprising a plurality of battery packs, a method for charging and equalizing battery packs by transferring charge between battery packs, the method comprising:

  • a) while the plurality of battery packs are not receiving energy from a power source external to the plurality of battery packs;

    b) determining if an adjacent neighbor battery pack is a candidate for receiving charge or supplying charge;

    c) selecting a battery pack to transfer charge from;

    d) transferring charge from the battery pack selected to transfer charge from to the battery pack selected to transfer charge to and equalizing charge therebetween;

    e) continuously and simultaneously performing steps b-d to multiple pairs of battery packs in parallel while the plurality of battery packs are not receiving energy from a power source external to the plurality of battery packs.

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