Cell assembly and battery module containing the same, and method for manufacturing a cell assembly
JP2026524796APending Publication Date: 2026-07-24LG ENERGY SOLUTION LTD
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2024-08-20
- Publication Date
- 2026-07-24
AI Technical Summary
Technical Problem
Heat dissipation and thermal runaway issues in battery modules, particularly in vehicles, lead to rapid degradation and increased risk of explosion or fire due to accumulated heat and propagation of thermal events.
Method used
A cell assembly design with a polymer foam and resin bonding system, where the polymer foam expands upon heating to delay flame propagation, and a resin with higher hardness prevents venting at electrode lead protrusions, creating a free volume for electrolyte and minimizing energy density loss.
Benefits of technology
The design effectively delays and prevents flame spread between battery cells, reduces degradation, and minimizes the risk of explosion by managing thermal transitions and maintaining structural integrity.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026524796000001_ABST
Abstract
A cell assembly according to an embodiment of the present invention includes a plurality of battery cells stacked on top of each other and each equipped with an electrode lead; a first bonding body formed to be in contact with the electrode leads of the plurality of battery cells; and a second bonding body formed to be in contact with the plurality of battery cells and not overlapping with the first bonding body, wherein the first bonding body may be made of a material with lower hardness than the second bonding body.
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