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Battery thermal event detection system using an electrical conductor with a thermally interruptible insulator

  • US 8,154,256 B2
  • Filed: 05/28/2009
  • Issued: 04/10/2012
  • Est. Priority Date: 05/28/2009
  • Status: Active Grant
First Claim
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1. A detection system for detecting a battery thermal event, the detection system comprising:

  • at least one battery;

    an insulated conductive member comprised of a conductive core and an insulator covering said conductive core, said insulated conductive member proximate to an external surface of said at least one battery, wherein a portion of said insulator melts when a temperature corresponding to said at least one battery exceeds a predetermined temperature; and

    a voltage measuring system coupled to said insulated conductive member and monitoring a voltage corresponding to said insulated conductive member, wherein said voltage measuring system outputs a first signal when said at least one battery is operating within a prescribed temperature range and outputs a second signal when said temperature corresponding to said at least one battery exceeds said predetermined temperature, wherein said predetermined temperature is outside of said prescribed temperature range.

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