Battery pack

By using heat-resistant and fire-resistant protective covers to cover the external terminals and connecting busbars of the battery pack housing, the problem of explosions and fires caused by sparks or flames in the battery pack is solved, thus improving the safety of the battery pack.

CN121399787APending Publication Date: 2026-01-23LG ENERGY SOLUTION LTD
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Patent Information

Application Number
CN202580003248.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-03-22
Filing Date
2025-03-19
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

In existing battery packs, sparks or flames can cause the busbar to come into contact with the conductor, triggering a large-scale explosion or fire, especially when the cell assembly is short-circuited, as flying spark particles can easily come into contact with the busbar.

Method used

A battery pack housing structure is designed, wherein a protective cover covers the external terminals of the cell assembly and the upper part of the connecting busbar, using heat-resistant and fire-resistant materials, such as mica or glass fiber, to prevent sparks or flames from directly contacting the busbar, and the upper part of the connecting busbar is isolated by an insulating material.

Benefits of technology

It effectively prevents direct contact between sparks or flames and the busbar, reducing the risk of explosion and fire inside the battery pack and improving safety.

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Abstract

The present invention relates to a battery pack for accommodating a battery cell assembly including a pair of external terminals, the battery pack comprising: a battery pack case on which the battery cell assembly is disposed, in which the battery pack case comprises: a bottom plate supporting the bottoms of a plurality of battery cell assemblies; and a protective cover coupled to a central portion of the base plate, the protective cover covering an external terminal of each of the accommodated cell assemblies.
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