Battery pack and electric device

CN224480997UActive Publication Date: 2026-07-10SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUNWODA MOBILITY ENERGY TECHNOLOGY CO LTD
Filing Date
2025-06-20
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Power batteries generate a lot of heat during rapid charging and discharging. The cooling system cannot dissipate the heat in time, which affects battery performance and lifespan. In addition, arranging a large number of cooling components will take up space and reduce energy density.

Method used

Design a battery pack that uses multiple heat exchange tubes arranged vertically to the individual cells, with the branch tubes and main tubes overlapping in projection and connected by a connector to achieve uniform distribution of the cooling medium, make full use of space, and improve cooling effect and temperature uniformity.

Benefits of technology

It improves the cooling effect and temperature uniformity of the battery pack, avoids local overheating, enhances the volumetric energy density of the battery pack, and reduces the risk of thermal runaway.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application discloses a battery pack and an electrical device. The battery pack has a first direction and a second direction that are perpendicular to each other. The battery pack includes a thermal management component and multiple individual cells. The thermal management component includes a main flow pipe, multiple branch flow pipes, and multiple heat exchange pipes. The heat exchange pipes extend along the first direction, and the multiple heat exchange pipes are spaced apart along the second direction. At least one individual cell is disposed between two adjacent heat exchange pipes. The main flow pipe and the branch flow pipes are disposed at the same end of the heat exchange pipes along the first direction. Along a third direction, on a plane perpendicular to the third direction, the projections of the main flow pipe and the branch flow pipes at least partially overlap. The multiple branch flow pipes are spaced apart along the second direction. The main flow pipe extends along the second direction and connects to the multiple branch flow pipes, and the branch flow pipes extend along the second direction and connect to the multiple heat exchange pipes. The embodiments of this application take into account the cooling effect, temperature uniformity, and volumetric energy density of the battery pack.
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