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Lithium Ion Battery With Thermal Runaway Protection

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
Lithium ion batteries are provided that include materials that provide advantageous endothermic functionalities contributing to the safety and stability of the batteries. The endothermic materials may include a ceramic matrix incorporating an inorganic gas-generating endothermic material. If the temperature of the lithium ion battery rises above a predetermined level, the endothermic materials serve to provide one or more functions to prevent and/or minimize the potential for thermal runaway, e.g., thermal insulation (particularly at high temperatures); (ii) energy absorption; (iii) venting of gases produced, in whole or in part, from endothermic reaction(s) associated with the endothermic materials, (iv) raising total pressure within the battery structure; (v) removal of absorbed heat from the battery system via venting of gases produced during the endothermic reaction(s) associated with the endothermic materials, and/or (vi) dilution of toxic gases (if present) and their safe expulsion from the battery system.
Onnerud, Tord Per Jens (Wilton, CT), Shi, Jay Jie (Acton, MA), Bowersock, Ricky Edward (Augusta, GA), Gayman, Gary Eugene (Augusta, GA), Street, Jason Peter (Augusta, GA)
Cadenza Innovation, Inc. (Wilton CT)
15/ 312,888
May 21, 2015
GOVERNMENT RIGHTS [0002] This invention was made with government support under DE-AR0000392 awarded by the United States Department of Energy. The government has certain rights in the invention.