Battery pack

By providing a protective layer of insulating material or flame retardant and a multi-layer gas flow path system in the battery pack housing, the problem of internal structure collapse of the battery pack under the action of high-temperature gas is solved, and the rapid discharge of high-temperature gas and the stability of the battery pack is achieved.

CN119768962APending Publication Date: 2025-04-04LG ENERGY SOLUTION LTD
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Patent Information

Application Number
CN202380062289.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-03-17
Filing Date
2023-12-01
Publication Date
2025-04-04

AI Technical Summary

Technical Problem

Existing battery packs are prone to collapse under the action of high-temperature gas, and cannot effectively discharge high-temperature gas, resulting in heat accumulation and potential fire or explosion.

Method used

A battery pack is designed, and the battery pack housing is equipped with a protective layer of insulating material or flame retardant to form a gas flow path and through holes to ensure that high-temperature gas can be discharged quickly, and further strengthen the gas discharge capacity through the flow path and hole system of the side walls and the top cover.

Benefits of technology

Through the protective layer of insulating materials or flame retardant and the multi-layer gas flow path system, the internal structure collapse caused by high-temperature gas is effectively prevented, improving the stability of the battery pack, and ensuring that the high-temperature gas can be discharged quickly, reducing heat accumulation and safety risks.

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Abstract

Disclosed herein is a battery pack for accommodating a plurality of battery cell assemblies. More specifically, the battery pack of the present disclosure comprises: a pack case providing a space for housing a battery cell assembly, in which the pack case comprises: a bottom plate supporting a lower portion of the battery cell assembly; and a side wall of a hollow structure coupled along an edge of the bottom plate to support a side portion of the battery cell assembly, in which the side wall includes: a gas flow path in which a gas is movable; and a through hole formed on the gas flow path such that the gas flow path communicates with the space of the pack case, the inside of the side wall being coated with a protective layer including at least one of an insulating material and a flame retardant.
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