Motor stator and motor

Abstract

The invention provides a motor stator and a motor. Each phase winding is formed by connecting a plurality of conductor groups in series along the circumferential direction of a stator core. The plurality of conductor groups comprise a plurality of first conductor groups, a plurality of second conductor groups and a plurality of third conductor groups, and any conductor group comprises K conductors; the plurality of first conductor groups are sequentially arranged on the radial Mth layer of the stator iron core along the circumferential direction of the stator iron core; the plurality of third conductor groups are sequentially arranged on the first layer in the radial direction of the stator core along the circumferential direction of the stator core, and the plurality of second conductor groups are sequentially arranged in the (M/2) th layer and the (M/2 + 1) th layer which are adjacent in the radial direction of the stator core along the circumferential direction of the stator core; the adopted conductors are few in types and simple in arrangement mode, and bus bars and busbars can be omitted, so that the twisting direction and the twisting slot pitch of the welding end parts extending towards the interiors of the slots in the same layer in the slots of the stator iron core are consistent, and the lead ends and the neutral points among the windings of all phases are arranged in any layer of any slot in the same radial direction. The manufacturing process complexity is reduced, the production cost is reduced, and the processing efficiency is improved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a motor stator and a motor. Background technique [0002] The stator winding includes a plurality of hairpin coils, and the multiple hairpin coils are inserted into the slots of the stator core according to a certain arrangement to form the single-phase winding or multi-phase winding of the required motor. The hairpin coils used in the prior art There are many types of stator windings, and the arrangement method is complicated, and a large number of bus bars and bus bars are needed to connect the branches of each phase winding; more than 90% of the stator windings in the prior art have the number of slots per pole and phase greater than or equal to 2 , but if the phases of the stator winding are connected in series, the twisting direction of the welding ends in the same layer of slots or the pitch of the twisting slots will be inconsistent, the manufacturing process is complicated, the form...

AI Technical Summary

Problems solved by technology

[0002] The stator winding includes a plurality of hairpin coils, and the multiple hairpin coils are inserted into the slots of the stator core according to a certain arrangement to form the single-phase winding or multi-phase winding of the required motor. The hairpin coils used in the prior art There are many types of stator windings, and the arrangement method is complicated, and a large number of bus bars and bus bars are needed to connect the branches of each phase winding; more than 90% of the stator windings in the prior art have the number of slots per pole and phase greater than or equal to 2 , but if the phases of the stator winding are connected in series, the twisting direction of the welding ends in the same layer of slots or the pitch of the twisting slots will be inconsistent, the manufacturing process is complicated, the forming is difficult, the production cost is high, and the processing efficiency is low

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