Method for manufacturing all-solid-state secondary battery module and all-solid-state secondary battery module

By using a photocurable thermally conductive resin to form a cured layer on a transparent resin film in an all-solid-state lithium-ion secondary battery, the problem of unclear heat dissipation materials and manufacturing methods is solved, achieving efficient heat dissipation and adaptability, and improving battery safety.

CN122910531APending Publication Date: 2026-10-13TOAGOSEI CO LTD
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Patent Information

Application Number
CN202580020390.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-07-05
Filing Date
2025-03-04
Publication Date
2026-10-13

AI Technical Summary

Technical Problem

In the existing technology, the heat dissipation materials and manufacturing methods of all-solid-state lithium-ion secondary batteries are unclear, resulting in limited thermal conductivity or material degradation, and failing to effectively adapt to thickness deviations and volume changes in electrode stacks.

Method used

A photocurable thermally conductive resin is coated and cured on a transparent resin film to form a cured layer. This layer is then tightly adhered to and peeled off from the electrode laminate, and finally comes into close contact with the outer packaging material to form a thermally conductive path. It is then fixed with an adhesive or bonding agent.

Benefits of technology

It achieves efficient heat dissipation, can adapt to thickness deviations and volume changes in electrode stacks, and improves the heat dissipation performance and safety of the battery.

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Abstract

A method for manufacturing a full-solid secondary battery module includes the following (1) to (4) processes. (1) A process of applying, on a support (14) composed of a light-transmissive resin film (141) or a light-transmissive resin sheet, a light-cured heat conductive resin having a thermal conductivity of 0.7 W / (m·K) or more after curing to form a light-cured heat conductive resin layer (120); (2) a process of bringing a side surface of an electrode laminate (11) into contact with a back surface of a surface of the resin layer (120) that is in contact with the support (14), and then irradiating the resin layer (120) with light from the support (14) side to cure the light-cured heat conductive resin, thereby forming a cured product layer composed of a cured product of the light-cured heat conductive resin on the side surface of the electrode laminate (11); (3) a process of peeling the electrode laminate on which the cured product layer is formed from the film; and (4) a process of housing the electrode laminate in an outer packaging material so as to be in direct or indirect contact with an inner surface of the outer packaging material, and sealing the outer packaging material, thereby obtaining a full-solid secondary battery.
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