Battery pack

JP2026517541AActive Publication Date: 2026-06-02LG ENERGY SOLUTION LTD

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
LG ENERGY SOLUTION LTD
Filing Date
2024-12-09
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Secondary batteries are vulnerable to thermal events, which can lead to chain reactions causing accidents such as fires and explosions, especially in densely packed battery modules and packs used in electric vehicles, necessitating improved thermal safety measures.

Method used

A battery pack design with internal flow paths, partition walls, and injection holes that allow direct injection of a cooling fluid into specific locations during thermal events, using caps that melt to open and seal injection holes, maintaining high pressure within the system.

Benefits of technology

Enhances thermal safety by suppressing heat propagation and acting as a fire extinguisher, improving cooling efficiency and maintaining high pressure for effective fluid injection.

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  • Figure 2026517541000001_ABST
    Figure 2026517541000001_ABST
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Abstract

The present invention discloses a battery pack. A battery pack according to one embodiment of the present invention includes a base plate having a flow channel inside, a plurality of battery cells located on the base plate, and a partition wall provided on the upper surface of the base plate and having an internal space communicating with the flow channel.
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