Heat exchange plate, battery assembly, and vehicle

By designing a partitioned heat exchange plate structure, the problems of low heat exchange efficiency and heavy weight in the power battery thermal management system are solved, achieving more efficient temperature balance and weight reduction, and improving the charging and discharging performance of the battery components.

WO2026153320A1PCT designated stage Publication Date: 2026-07-23BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
BEIJING CHEHEJIA AUTOMOBILE TECH CO LTD
Filing Date
2026-01-13
Publication Date
2026-07-23

AI Technical Summary

Technical Problem

Existing power battery thermal management systems suffer from low heat exchange efficiency due to the limited contact area between the panels and the power battery, making it difficult to meet the demand for high-rate fast charging. Increasing the number of panels will increase the system weight and affect the battery charging and discharging speed.

Method used

Design a heat exchange plate. The main body is divided into a first part and a second part. The first part is set with a flow channel that contacts the part of the battery cell near the electrode post, and the second part contacts the part away from the electrode post. The flow channel passes through the end cap and is connected. The notch design reduces the inflow of coolant, improves the coolant utilization rate and reduces the weight of the system.

Benefits of technology

It improves the utilization rate of coolant, reduces coolant waste, ensures the temperature uniformity and charging/discharging efficiency of battery components, and reduces system weight and load.

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Abstract

A heat exchange plate (1), a battery assembly, and a vehicle. The heat exchange plate (1) comprises a main plate body (11). Along a first direction (X), the main plate body (11) is divided into a first portion (111) and a second portion (112) connected to each other. A plurality of flow channels (114) are provided in the first portion (111), the flow channels (114) being used for circulating a coolant. The first portion (111) is configured to contact a first part of a battery cell (3), the first part being a part close to a terminal of the battery cell (3). The second portion (112) is configured to contact a second part of the battery cell (3), the second part being a part away from the terminal of the battery cell (3). Since the coolant does not flow into the second portion (112) of the heat exchange plate (1), the heat exchange plate (1) has a lower demand for coolant, which is conducive to reducing the self-weight of a battery pack using the heat exchange plate (1).
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