Stator assembly and motor

By combining aluminum windings and copper windings in the stator assembly, utilizing the low-loss characteristics of aluminum windings and the high-efficiency characteristics of copper windings, and using busbars made of different materials for electrical connection, the problem of unstable aluminum-copper connection is solved, achieving low cost and high efficiency of the motor.

CN223414671UActive Publication Date: 2025-10-03CHAFA FRIEDRICH SCHAFFEN CO LTD
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Patent Information

Application Number
CN202422822905.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-19
Publication Date
2025-10-03
Estimated Expiration
2034-11-19

AI Technical Summary

Technical Problem

In the existing technology, the connection structure between the aluminum winding and the copper winding is unstable, which leads to difficulties in motor production. In addition, the copper winding has high losses at high frequencies, making it difficult to achieve low cost and lightweight motors.

Method used

The stator assembly design combines aluminum and copper windings, and electrical connections are achieved through busbars made of different materials. The low-loss characteristics of aluminum windings at high frequencies are combined with the high efficiency characteristics of copper windings to avoid direct connection, achieving low cost and lightweight.

Benefits of technology

The stator assembly is made low-cost and lightweight, and the performance and efficiency of the motor are improved. The electrical connection of the copper-aluminum busbar enhances the stability and electrical connection quality of the motor.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides a stator assembly and a motor, the stator assembly comprises a stator iron core, at least one layer of first winding and at least one layer of second winding with a plurality of electric phases, and a plurality of stator slots are arranged in the circumferential direction of the stator iron core; the windings are assembled in stator slots of the stator core, and a crown end and a welding end are respectively formed on two sides of the stator core; the first winding and the second winding are respectively arranged on the inner diameter side and the outer diameter side of the stator core; the first winding and the second winding are made of different materials; at least one layer of first winding forms at least one first busbar at the crown end; at least one layer of second winding forms at least one second busbar at the crown end, and one first busbar is electrically connected with one second busbar. According to the utility model, the stator assembly comprises the copper winding and the aluminum winding, the aluminum winding replaces the copper winding with higher copper loss under high frequency through the characteristic that the aluminum winding has lower high-frequency loss in the inner layer, and the low cost, light weight and high performance of the stator assembly are realized through the busbars made of different materials.
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