Motor stator winding, stator using same and motor

Abstract

The invention provides a motor stator winding, a stator using the same and a motor, and belongs to the field of motors, the motor stator winding comprises a first coil assembly, a fourth coil assemblyand at least two second coil assemblies which are coaxially arranged, and the first coil assembly and the fourth coil assembly are arranged on the same layer of the radial inner side first layer andthe radial outer side first layer of a stator core; the first coil assembly and the fourth coil assembly have long and short distances, and in the same stator winding, the structures of the pluralityof second coil assemblies are the same or different; the pitch between the two welding ends of the two conductors welded with each other of the two second coil groups arranged adjacently is a long pitch; and the pitch between the second coil and the first coil group or between the second coil group and the fourth coil group and between the two welding ends of the two welded conductors is the wholepitch. The wiring mode is simple, the process is simplified, the complexity of the manufacturing process can be reduced, and the machining efficiency is improved.

Description

technical field [0001] The invention belongs to the field of motors, and relates to motor stator windings, stators and motors using the same. Background technique [0002] Winding motors designed with flat copper hairpin wires instead of traditional thin round wires are called Hair-pin winding motors. [0003] The stator winding of the Hair-pin includes a plurality of hairpin coils, and the multiple hairpin coils penetrate into the slots of the stator core according to a certain arrangement to form the windings of the required single-phase motor or multi-phase motor. In the prior art , the number of slots per pole and phase of the Hair-pin stator winding is greater than or equal to 2, and there are many types of hairpin coils used. In the structure of series connection between phases, there will be inconsistent twisting directions of the welding ends of the hairpin coils on the same layer Or different hairpin coils have different slot spacing after the welding ends are twis...

AI Technical Summary

Problems solved by technology

[0003]The stator winding of the Hair-pin includes multiple hairpin coils, which penetrate into the slots of the stator core according to a certain arrangement to form the required The windings of single-phase motors or multi-phase motors. In the prior art, the number of slots per pole and phase of Hair-pin stator windings is greater than or equal to 2, and there are many types of hairpin coils used. In the structure of series connection between phases , the twisting directions of the welding ends of the hairpin coils on the same layer will be inconsistent or the slot spacing between the welding ends of different hairpin coils will be different after twisting, so the stator winding needs to use a large number of bus bars and bus bars to connect the branches of each phase winding , the arrangement of stator windings is complex, difficult to form, high production cost, and low processing efficiency

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