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Circuits and methods for measuring cell voltages in battery packs

  • US 8,629,679 B2
  • Filed: 11/29/2010
  • Issued: 01/14/2014
  • Est. Priority Date: 12/29/2009
  • Status: Active Grant
First Claim
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1. A circuit for reduced power consumption management of a rechargeable multi-cell battery pack, comprising:

  • a level shifter operable for shifting a terminal voltage of a battery cell from a first voltage level to a second voltage level;

    a sense block coupled to said level shifter operable for monitoring the current consumed by said level shifter from said battery cell and for generating a sense signal indicative of said current;

    a compensation current generator coupled to said sense block and said level shifter and operable for receiving said sense signal and generating a compensation current flowing into said battery cell according to said sense signal.

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