Cooling assembly of motor, motor and vehicle

By setting inlet and outlet components within the stator assembly of the axial flux motor to form a cooling space, the problem of poor heat dissipation performance of the axial flux motor is solved, achieving efficient heat exchange and uniform temperature distribution across the entire winding unit, thus improving the motor's heat dissipation effect.

CN121966092APending Publication Date: 2026-05-01ZHUIMIFENGXING TECHNOLOGY (SUZHOU) CO LTD
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Patent Information

Application Number
CN202610353464.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-22
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Axial flux motors have poor heat dissipation performance, which affects their application in scenarios such as new energy vehicles.

Method used

A cooling assembly is designed, comprising an inlet and an outlet arranged axially within a sealed cavity of a stator assembly to form a cooling space. Cooling fluid enters through the inlet and contacts the winding unit before being led out by the outlet. The axial extension length of the inlet is less than that of the outlet, ensuring that the cooling fluid fully covers the winding unit and optimizing the flow path.

Benefits of technology

It achieves efficient heat exchange across the entire winding unit, avoids flow blind spots and heat exchange dead zones, improves heat dissipation, and has a compact structure that does not increase the size of the motor, ensuring smooth flow of cooling fluid and system stability.

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Abstract

The invention discloses a cooling assembly of a motor, the motor and a vehicle, the cooling assembly comprises an inflow piece and an outflow piece which are arranged in a sealing cavity in the axial direction, the inflow piece and the outflow piece define a cooling space, and the inflow piece and the outflow piece are each provided with a cooling fluid flowing opening. The winding unit comprises a cooling space and an outflow part, the outflow part is arranged in the cooling space so that cooling fluid can be injected into and led out of the cooling space, at least part of the winding unit penetrates through the inflow part to stretch into the cooling space and makes direct contact with the cooling fluid in the cooling space, and the extension length of the outflow part in the axial direction is larger than the extension length of the inflow part in the axial direction. Cooling fluid can form a cooling fluid flow field wrapping the periphery of the winding unit through directional flow distribution of the flow inlet piece, the cooling fluid is led out through the flow outlet piece after heat exchange is completed, the heat dissipation effect is guaranteed, the axial extension length of the flow inlet piece is smaller than that of the flow outlet piece, the heat exchange area can be increased, the flow speed of the cooling fluid in the iron core gap can be increased, and the heat dissipation effect is enhanced.
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