Battery structure and electronic device

By using a combination of multiple flexible circuit boards and heat sinks in the battery structure, the problem of excessive temperature rise during fast charging is solved, achieving efficient fast charging and safe heat dissipation, thus improving the performance of the battery structure and the user experience.

CN117673662BActive Publication Date: 2026-08-28BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Application Number
CN202211061862.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-31
Publication Date
2026-08-28
Estimated Expiration
2042-08-31

AI Technical Summary

Technical Problem

Existing lithium-ion polymer batteries are prone to overheating during fast charging, which affects charging speed and safety, and cannot meet users' needs for fast charging and long-term use.

Method used

Multiple flexible circuit boards are connected to the battery cell circuit board to achieve a fast charging mode. The heat from the battery cell circuit board is conducted to the mid-frame assembly of the electronic device through the first heat sink. Layered cooling is achieved by combining multiple heat sinks and phase change heat sinks.

Benefits of technology

It achieves efficient heat dissipation in fast charging mode, reduces the overall temperature of the battery structure, improves charging efficiency and safety, and meets users' needs for fast charging and long-term use.

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Abstract

The present disclosure relates to a battery structure and an electronic device. The battery structure comprises a battery circuit board and two battery modules. The two battery modules are symmetrically arranged on both sides of the battery circuit board and connected with the battery circuit board. The first end of each flexible circuit board is connected with the battery circuit board, and the second end of each flexible circuit board is arranged to be connected with the mainboard of the electronic device. The first heat dissipation member is located between the two battery modules and is connected with the battery circuit board and the middle frame assembly of the electronic device. In the present disclosure, the plurality of flexible circuit boards are connected with the battery circuit board, and the plurality of flexible circuit boards simultaneously charge the battery modules to realize a fast charging mode, reduce the impedance of each flexible circuit board, and effectively reduce the heat generated by each flexible circuit board. The first heat dissipation member is connected with the battery circuit board and the middle frame assembly of the electronic device, respectively, conducts the heat in the battery circuit board to the middle frame assembly, and further dissipates heat for the battery structure.
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