Soft package lithium battery module structure capable of effectively preventing heat diffusion in battery pack

Abstract

The invention relates to a soft package lithium battery module structure capable of effectively preventing heat diffusion in a battery pack, and the structure comprises a module, wherein the internal space of the module is divided into a plurality of areas by a heat insulation plate, a fireproof plate, an upper cover plate, a lower cover plate, a left end plate and a right end plate; a battery cell unit is placed in each area, and the battery cell unit is formed by stacking battery cells in series and in parallel; the lower part of the upper cover plate is coated with a heat-conducting structural adhesive, the upper part of the lower cover plate is coated with a heat-conducting structural adhesive, the upper cover plate and the lower cover plate are adhered and fixed with the battery cell through the coated adhesive, and the module enhances the structural strength and realizes heat conduction in the module through the heat-conducting structural adhesive. According to the invention, the heat diffusion between modules in the battery pack can be effectively prevented, and the safety of the battery pack is improved.

Description

technical field [0001] The invention relates to the technical field of the structure of a soft-pack lithium battery, in particular to a soft-pack lithium battery module structure that effectively prevents thermal diffusion in the battery pack. Background technique [0002] Lithium-ion batteries have the advantages of light weight, large energy storage, high power, no pollution, long life, small self-discharge coefficient, wide temperature range, etc., so they are gradually favored by people, and have gradually replaced Other traditional batteries; with the development of the new energy industry, the safety performance of modules has attracted more and more attention. Soft-pack lithium battery modules are developing in the direction of large-scale and integrated, which means that a large number of soft-pack batteries They need to be stacked together. Compared with square aluminum shell batteries and cylindrical batteries, if a large number of pouch batteries are stacked toget...

AI Technical Summary

Problems solved by technology

[0002] Lithium-ion batteries have the advantages of light weight, large energy storage, high power, no pollution, long life, small self-discharge coefficient, wide temperature range, etc., so they are gradually favored by people, and have gradually replaced Other traditional batteries; with the development of the new energy industry, the safety performance of modules has attracted more and more attention. Soft-pack lithium battery modules are developing in the direction of large-scale and integrated, which means that a large number of soft-pack batteries They need to be stacked together. Compared with square aluminum shell batteries and cylindrical batteries, if a large number of pouch batteries are stacked together without better safety protection, when the thermal runaway of the battery cells occurs, it is easy to quickly cause large-scale thermal diffusion, which may cause Dangerous situations such as combustion or explosion occur; therefore, it is particularly important to design a soft-pack lithium battery module structure that effectively prevents thermal diffusion in the battery pack

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