Battery assembly and battery pack comprising same

WO2026141883A1PCT designated stage Publication Date: 2026-07-02LG ENERGY SOLUTION LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
LG ENERGY SOLUTION LTD
Filing Date
2025-10-14
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Conventional battery modules face challenges in efficiently dissipating heat generated by high-capacity secondary batteries, leading to temperature differences and safety issues such as degradation, ignition, and explosion, particularly in automotive applications where heat dissipation is further complicated by exposure to direct sunlight and high temperatures.

Method used

A battery assembly design featuring a cell frame with integrated cooling channels through which a cooling fluid flows directly in contact with battery cells, utilizing a multi-layer cooling structure with opposite flow directions in separate channels to minimize space waste and enhance sealing performance.

Benefits of technology

The design achieves improved heat dissipation and reduced temperature differences among battery cells, enhancing safety and durability by minimizing space utilization and reducing the risk of thermal runaway and explosions.

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Abstract

A battery assembly according to one embodiment of the present invention comprises: a plurality of battery cells; and a cell frame in which the battery cells are accommodated. The cell frame comprises a cooling flow path disposed therein, through which a cooling fluid flows in direct contact with at least a portion of the battery cells. The cooling flow path comprises a plurality of cooling flow paths arranged along a longitudinal direction of the battery cells in which the battery cells extend. The cell frame comprises at least one partition part integrally connected to a side part of the cell frame. One of the plurality of cooling flow paths is positioned on one side of the partition part, and another of the plurality of cooling flow paths is positioned on the other side of the partition part.
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