Battery module and electric device

CN224502199UActive Publication Date: 2026-07-14TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: TSINGHUA SHENZHEN INTERNATIONAL GRADUATE SCHOOL
Filing Date: 2025-08-12
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

In traditional fully submerged cooling battery modules, the terminals of individual cells are prone to corrosion when in contact with the coolant, posing a high safety risk.

Method used

It adopts a semi-immersion liquid cooling design, forming a closed space through the sealed connection between the cover and the box. The part of the terminal post that extends out of the shell is isolated from the coolant, and the risk of coolant leakage is reduced when the battery module is tilted. At the same time, the insulation layer and thermal conductivity enhanced filler are used to improve heat dissipation efficiency and safety performance.

Benefits of technology

While maintaining heat dissipation efficiency, it effectively reduces the risk of short circuits in the terminals, improves the safety performance of the battery module, reduces the risk of coolant leakage, and enhances sealing performance.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224502199U_ABST

Patent Text Reader

Abstract

A battery module and an electric device, the battery module comprising a battery cell group, a box body and an upper cover. The battery cell group comprises a plurality of battery cell monomers, the battery cell monomer comprising a shell and a pole, the pole extending from one side of the shell. The box body is provided with a containing cavity and a first opening communicating with the containing cavity, the containing cavity being provided with a cooling liquid, the battery cell group being arranged in the containing cavity, and the cooling liquid being in contact with the shell. The upper cover comprises a cover body, a first sealing element and a second sealing element, the cover body and the box body being arranged along a first direction, the cover body being arranged at the first opening, the first sealing element being arranged between the cover body and the box body, the cover body being sealingly connected with the box body through the first sealing element, the cover body being provided with a positioning hole, each battery cell monomer passing through one positioning hole, the part of the pole extending out of the shell being arranged on the side of the cover body away from the containing cavity, the second sealing element being arranged between the positioning hole and the cover body, and the cover body being sealingly connected with the shell through the second sealing element. The above battery module can improve safety performance.

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