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Suppression of battery thermal runaway

  • US 20100028758A1
  • Filed: 07/30/2009
  • Published: 02/04/2010
  • Est. Priority Date: 08/04/2008
  • Status: Abandoned Application
First Claim
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1. A thermal runaway suppression element for interposition between the cells of a multiple-cell battery pack, comprising:

  • a container conforming to the external surfaces of said cells, such that the container is in good thermal conductive relation with the cells, anda phase change material consisting essentially of a quantity of water in hydrogel form, disposed in said container,whereby in the event one of said cells overheats, heat is transferred to the hydrogel, heating the water, such that the water absorbs the heat given off by the overheated cell, and whereby said water can undergo a phase change and be vaporized if sufficiently heated.

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