Battery assembly and vehicle

By setting valve seats and valve guides on the outside of the battery assembly housing to cooperate with the cold plate, the cell module is cooled by the phase change of the refrigerant, which solves the problems of low cooling efficiency and complex assembly, and achieves more efficient thermal management and simplified pipeline connection.

WO2026138353A1PCT designated stage Publication Date: 2026-07-02ZHEJIANG GEELY HLDG GRP CO LTD +1
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
ZHEJIANG GEELY HLDG GRP CO LTD
Filing Date
2025-11-27
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

The thermal management module in the existing battery assembly has low cooling efficiency for the cell module, poor thermal management effect, and the cooling water pipeline is complicated to connect inside the casing, making assembly and maintenance difficult.

Method used

A valve seat and valve guide are installed on the outside of the housing to cooperate with the cold plate. The cold plate realizes the inflow and outflow of refrigerant through the valve guide. The phase change of the refrigerant is used to cool the battery cell module, improve the convenience of cold plate pipeline connection and assembly, and enhance cooling efficiency.

Benefits of technology

It improves the cooling efficiency of the cold plate for the battery cell module, has better thermal management effect, and simplifies the connection and maintenance process of cooling water pipeline.

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    Figure CN2025138305_02072026_PF_FP_ABST
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Abstract

The present application relates to the technical field of batteries. Provided are a battery assembly and a vehicle. The battery assembly comprises a housing, a cell assembly and a thermal management module, wherein the housing has an accommodating cavity, and the cell assembly is arranged in the accommodating cavity; the thermal management module comprises a cold plate, a valve seat and a valve guide, the cold plate being arranged on the bottom side of the housing and configured to cool the cell assembly by means of the phase change of a refrigerant, the valve seat being connected to the outer side of the housing, and the valve guide being connected to the valve seat; the cold plate is provided with a flow distribution portion protruding to the outer side of the housing, and the flow distribution portion is connected to the valve seat; and the flow distribution portion is provided with a refrigerant flow pipe, and the refrigerant flow pipe passes through the valve seat and is in communication with the valve guide. The cold plate enables the inflow and outflow of the refrigerant by means of the valve guide, so as to improve the convenience of pipeline connection and assembly of the cold plate, and can also improve the cooling efficiency of the cold plate for a cell module, so as to achieve a better thermal management effect.
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