Lithium-ion battery with thermal runaway protection

摘要

A lithium ion battery is provided that includes a material that provides an advantageous endothermic function that contributes to the safety and stability of the battery. The endothermic material may include a ceramic matrix incorporating an inorganic gas generating endothermic material. When the temperature of the lithium ion battery rises above a predetermined level, the endothermic material can have one or more functions that prevent and / or minimize the possibility of thermal runaway, such as thermal insulation (especially high temperature), (Ii) energy absorption, (iii) ventilation of all or part of the product gas derived from the endothermic reaction associated with the endothermic material, (iv) increase in total pressure inside the battery structure, (v) endothermic associated with the endothermic material. During the reaction, aeration of product gas serves to remove heat absorbed from the battery system and / or (vi) dilute the toxic gas (if present) and safely expel it from the battery system.