Battery case, battery pack and method for manufacturing battery case

By setting internal flow channels and liquid cooling components on the supporting beam inside the battery box, the cooling path is optimized, solving the problem of low cooling efficiency of existing liquid cooling plates and achieving efficient cooling and improved durability.

WO2025222593A1PCT designated stage Publication Date: 2025-10-30EVE ENERGY CO LTD
View PDF 4 Cites 0 Cited by

Patent Information

Application Number
PCT/CN2024/097552
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-04-26
Filing Date
2024-06-05
Publication Date
2025-10-30

AI Technical Summary

Technical Problem

Existing liquid cooling plates in battery packs have problems such as complex piping, excessively long flow channels, large flow channel pressure drop, and low cooling efficiency, resulting in large temperature differences in different parts of the battery pack and poor durability.

Method used

The system employs an internal flow channel and liquid cooling assembly on the supporting beam inside the battery box. The liquid cooling assembly includes a first and a second flow divider arranged opposite each other. The heat exchange medium is transmitted along the diagonal direction and is divided by the internal flow channel and the flow divider. Combined with the design of the internal flow channel of the inner supporting beam, the cooling path is optimized.

Benefits of technology

It improves cooling efficiency, reduces the temperature difference of the battery pack, reduces maintenance costs, lowers the difficulty of production and maintenance, and improves the durability and space utilization of the battery pack.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN2024097552_30102025_PF_FP_ABST
    Figure CN2024097552_30102025_PF_FP_ABST
Patent Text Reader

Abstract

Disclosed in the present application is a battery case, comprising: a case main body, wherein a diversion inner channel and an output pipe joint are provided on an inner support beam of the case main body, and the output pipe joint is in communication with the diversion inner channel; and a liquid cooling assembly, wherein the liquid cooling assembly comprises a first flow splitting member and a second flow splitting member, which are arranged opposite each other; the liquid cooling assembly is mounted in the case main body; the diversion inner channel runs through the space between the first flow splitting member and the second flow splitting member, and both the first flow splitting member and the second flow splitting member are in communication with the output pipe joint; in addition, the first flow splitting member guides a heat exchange medium to be conveyed from a side close to the diversion inner channel and in a diagonal direction of the first flow splitting member, and the second flow splitting member conveys from a side close to the diversion inner channel and in a diagonal direction of the second flow splitting member.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Battery pack box body and battery pack

    CN114530643A

  • Micro-channel structure optimization method of battery heat dissipation plate

    CN115799718A

  • Battery pack box body and battery pack

    CN213782096U

  • battery pack

    DE102016205124B3