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Monitoring battery cell voltage

  • US 8,294,424 B2
  • Filed: 11/02/2010
  • Issued: 10/23/2012
  • Est. Priority Date: 07/17/2006
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a battery gauge circuitry implemented on an integrated circuit, said battery gauge circuitry comprising;

    a plurality of switches each configured to receive a respective voltage signal representative of a voltage on an associated battery cell and configured to individually open in response to a voltage reduction on a battery cell associated with a respective one of said switches;

    a logic device configured to determine if at least one of the switches is open;

    at least one register configured to store data that indicates if at least one switch of said plurality of switches is open; and

    a controller configured to initiate halting power delivery to a load if at least one of the switches is open.

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