Battery shell capable of resisting thermal runaway

Abstract

The invention discloses a battery shell capable of resisting thermal runaway. The battery shell provided by the invention is different from traditional metallic battery shell; and a thin layer with excellent bonding performance is used for coating the inner wall of a battery shell of any shape and any material under the inspiration of the influence of both a windshield PVB film and the insulationdegree of puncturing objects on thermal runaway, so a composite structure is formed. The battery shell of the invention is simple in principle, convenient to operate, practical and effective. The battery shell can effectively prevent the spread of thermal runaway in the case of battery accumulation, reduces the damage of lithium batteries, and facilitates further development and application of lithium batteries.

Description

technical field [0001] The invention relates to the field of lithium-ion batteries and automobile collision safety, in particular to a lithium-ion battery shell for preventing thermal runaway. Background technique [0002] Lithium-ion batteries are widely used in aerospace, automobiles and portable devices, and their safety issues have received extensive attention. [0003] The lithium-ion battery case plays a vital role in battery protection, protecting the battery cell, reducing its damage from external loads, and isolating the battery cell from contact with the outside air so that it can work safely and effectively. [0004] During the use of lithium-ion batteries, the inevitable puncture will lead to the occurrence of thermal runaway reaction of lithium-ion batteries, causing dangerous conditions such as fire or even explosion, which affects its further promotion. Studies have shown that the severity of the reaction of lithium batteries is different when different condu...

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