Cold plate, battery pack, and powered device

CN224502070UActive Publication Date: 2026-07-14BYD CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BYD CO LTD
Filing Date
2025-06-13
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing cold plates cannot meet the heat dissipation requirements of areas where the battery generates a large amount of heat, thus affecting the temperature uniformity of various areas of the battery.

Method used

The design incorporates a multi-layer first flow channel and a single-layer second flow channel structure. Differentiated design is used to dissipate heat in different heat-generating areas of the battery. The multi-layer flow channel increases the heat exchange area between the coolant and the high-heat-generating areas of the battery, while the single-layer flow channel is used for heat dissipation in low-heat-generating areas. Combined with a turbulence structure, the flow state is optimized.

Benefits of technology

It improves the temperature uniformity of various areas of the battery, avoids excessively high temperatures in local areas, enhances the uniformity of battery surface temperature, reduces flow resistance, improves heat dissipation efficiency, and ensures the safety and reliability of the battery pack.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224502070U_ABST
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Abstract

The application provides a cold plate, a battery pack and an electric device, and relates to the technical field of batteries. The first cooling area of the cold plate comprises a plurality of first flow channel layers in which cooling liquid can flow. The plurality of first flow channel layers are arranged along a first direction. The first direction is the thickness direction of the cold plate. A second cooling area is arranged along a second direction with the first cooling area. The second cooling area comprises a second flow channel layer in which cooling liquid can flow. The second direction is perpendicular to the first direction. The cold plate of the application meets the heat dissipation requirement of the area of the battery in which the local heat generation amount is relatively large, and improves the temperature uniformity of each area of the battery.
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