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SYSTEMS AND METHODS FOR BALANCING MULTI-CELL BATTERIES

  • US 20110140663A1
  • Filed: 12/08/2010
  • Published: 06/16/2011
  • Est. Priority Date: 12/14/2009
  • Status: Active Grant
First Claim
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1. A battery balancing circuit comprising:

  • a battery comprising a plurality of cells coupled in series, a first terminal and a second terminal;

    a transformer comprising a primary winding and a plurality of secondary windings, wherein each secondary winding is coupled to one of the plurality of cells via a secondary switch and a rectifier circuit, wherein the primary winding is coupled between the first terminal and the second terminal of the battery;

    a primary switch in series with the primary winding of the transformer; and

    a control circuitry coupled to the primary switch, the plurality of secondary switches, and each of the plurality of cells.

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