Heat transfer suppressing member and battery pack

By using a frame to surround the outer perimeter of the battery pack and incorporating a heat transfer suppression component with thin thermal insulation material, combined with elastic material and separator walls, the problems of deformation and heat propagation during thermal runaway of battery cells are solved, ensuring the safety and performance of the battery pack.

CN121586964APending Publication Date: 2026-02-27IBIDEN CO LTD
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Patent Information

Application Number
CN202480049452.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2023-07-31
Filing Date
2024-07-16
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

In existing technologies, battery cells are prone to deformation due to high compressive strength insulation materials during thermal runaway, leading to damage to the battery casing and performance degradation, while heat propagation becomes uncontrollable.

Method used

A heat transfer suppression component with a frame and thin insulation material is adopted. The frame surrounds the outer perimeter, and the insulation material is on the inner side and is thin. Combined with elastic material and separator wall, it ensures the spacing of battery cells and absorbs deformation, thus suppressing heat propagation.

Benefits of technology

It effectively prevents casing damage and performance degradation caused by battery cell deformation, suppresses heat propagation, and maintains the safety and performance stability of the battery pack.

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Abstract

The present invention provides a heat transfer suppressing member and a battery pack, the heat transfer suppressing member being capable of securing intervals between battery cells, suppressing damage to a battery case and deterioration in battery performance caused by deformation of the battery cells, and suppressing heat propagation between the battery cells during an abnormality, the battery pack can restrain heat transmission among battery units, and can restrain damage of a battery case and reduction of battery performance. The heat transfer suppressing member (50) has a frame body (53) that surrounds the outer periphery in plan view, and a sheet-like heat insulating material (10) that is disposed on the inside of the frame body (53) and that is provided with a pair of main surfaces (10s). Furthermore, in a cross-sectional view orthogonal to the plan view of the heat transfer suppressing member (50), the thickness of the heat insulating material (10) is thinner than the thickness of the frame body (53).
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