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Battery pack directed venting system

  • US 8,557,416 B2
  • Filed: 05/19/2012
  • Issued: 10/15/2013
  • Est. Priority Date: 04/22/2009
  • Status: Active Grant
First Claim
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1. A battery pack thermal management system, comprising:

  • a sealed battery pack enclosure configured to hold a plurality of batteries; and

    a battery venting assembly integrated into said sealed battery pack enclosure, wherein said battery venting assembly is comprised of;

    an exhaust port integrated into an outer wall of said sealed battery pack enclosure;

    a valve retention plate coupled to a surface of said outer wall of said sealed battery pack enclosure, wherein said valve retention plate covers said exhaust port, and wherein said valve retention plate is comprised of a plurality of retention plate ports; and

    a plurality of valves configured to seal said plurality of retention plate ports, wherein each of said plurality of valves seals said corresponding retention plate port under normal operating conditions and unseals said corresponding retention plate port when an excess pressure arises within said sealed battery pack enclosure, said excess pressure due to one or more of said plurality of batteries entering into thermal runaway,wherein a first portion of each valve of said plurality of valves is comprised of a retention plate port sealing member, and wherein a second portion of each valve of said plurality of valves is comprised of a retention member configured to be captured within a retention aperture corresponding to each retention plate port.

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