A liquid-cooled battery module based on magnetic force buffering

By using magnetic buffering in the liquid-cooled battery module, the mutual repulsion of plate magnets is used to absorb the expansion and contraction of the battery cells, and a coolant flow gap is formed between the magnets. This solves the problems of heat dissipation and structural stability, achieves efficient heat dissipation and structural stability, and extends the battery module life.

CN122436638APending Publication Date: 2026-07-21SHUANGLIANG ECO ENERGY SYST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHUANGLIANG ECO ENERGY SYST CO LTD
Filing Date
2026-06-17
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing liquid-cooled battery modules, the use of buffer materials leads to reduced heat dissipation efficiency, decreased cell performance consistency, and the cell expansion force has nowhere to be released, resulting in a loose structure and easy fatigue failure of the connecting busbar.

Method used

A magnetic buffering scheme is adopted, in which plate-shaped magnets with the same poles facing each other are set between the cells to form a repulsive buffering force to absorb the expansion and contraction of the cells, and a buffer gap for coolant flow is formed between the magnets. At the same time, the movement of the cells is constrained by the limiting frame to prevent lateral displacement.

Benefits of technology

It improves heat dissipation efficiency, reduces internal temperature difference of battery module, improves cell temperature uniformity, extends cycle life, enhances structural stability, and reduces the risk of fatigue failure of connection busbar.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of liquid-cooled battery module based on magnetic force buffer, it is related to energy storage equipment technical field, and its technical solution main points are: including: electric core stack, by multiple electric core sequentially stacked along stacking direction;Two end plates, respectively set in the two ends of electric core stack along stacking direction;Limiting frame, connected between two end plates, to constrain electric core stack in the space formed by limiting frame and two end plates, limiting frame is configured to allow electric core in electric core stack moves along stacking direction, and limit the movement of electric core along other directions;Plate-shaped magnet, between every two adjacent electric cores, on the two opposite faces of two adjacent electric cores respectively there is a plate-shaped magnet, and two plate-shaped magnets are arranged with same polarity, and buffer gap is formed between two plate-shaped magnets, buffer gap can be supplied with cooling fluid circulation.The application has the advantages of high heat dissipation efficiency, good structural stability, strong long-term operation reliability.
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