Flat wire motor stator, flat wire motor and vehicle

CN116154998BActive Publication Date: 2026-07-07HUNAN CRRC TIMES ELECTRIC DRIVE TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUNAN CRRC TIMES ELECTRIC DRIVE TECHNOLOGY CO LTD
Filing Date
2021-11-19
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing flat wire motors suffer from problems such as asymmetrical winding circuits, low production efficiency, complex structure, and increased manufacturing difficulty due to irregular coils, resulting in increased losses, reduced efficiency, and shortened service life.

Method used

The design adopts a multi-phase winding design, with each winding circuit including three parallel branches. The coil groups are arranged sequentially in the iron core slots and connected in series with each other. The intermediate layer coils are straddled between adjacent layers. The number of coil layers increases sequentially from the bottom of the slot to the top of the slot. A U-shaped or V-shaped coil structure is adopted, eliminating the opposite-shaped coils and bridging coils. The neutral point is connected through a copper busbar.

Benefits of technology

It achieves symmetry in each branch, reduces losses, improves production efficiency and service life, and simplifies the structure, reducing motor size and production costs.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116154998B_ABST
    Figure CN116154998B_ABST
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Abstract

The application discloses a flat wire motor stator, which comprises a stator winding and a stator core. The circumferential direction of the stator core is provided with a plurality of core slots. The stator winding comprises a plurality of phase windings. Each phase winding comprises a plurality of parallel winding circuits. Each winding circuit comprises three parallel branches. Each branch comprises a plurality of coil groups arranged in sequence on the circumferential core slots of the stator core and connected in series with each other. Each coil group comprises a plurality of coils arranged in the same pair of core slots and connected in series with each other. The number of layers of coils in each core slot increases from the bottom of the slot to the slot opening. In each coil group, the coil in the middle layer is arranged across two adjacent layers, and the coil in the innermost layer or the outermost layer is arranged in the same layer. The application further discloses a flat wire motor comprising the flat wire motor stator. The application further discloses a vehicle comprising the flat wire motor. The flat wire motor stator, the flat wire motor and the vehicle have the advantages of eliminating the phase difference between different branches, reducing the loss, increasing the efficiency, prolonging the service life and the like.
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