Motor stator and motor

Abstract

The present invention provides a motor stator and a motor. The motor stator comprises a stator core anda stator winding; the stator core has a plurality of core grooves which are formed on a radiallyinner surface of the stator core and spaced apart by a predetermined groove pitch in a circumferential direction of the stator core; the stator winding includes a plurality of phase windings mounted on the stator core and forming an even number of layers in a radial direction of the stator core; each phase winding comprises a first conductor group, a plurality of second conductor groups, a plurality of third conductor groups and a fourth conductor group which are connected in series; the number of adopted conductors is small, the arrangement mode is simple, bus bars and cylinder manifolds canbe omitted, the twisting direction and twisting groove pitch of the welding end, extending towards the interior of the same layer of groove, in the stator core grooves are made to be consistent, and it is achieved that the lead ends and the neutral points of all phases of windings are arranged on any layer of any groove in the same radial direction. Complexity of a manufacturing process is reduced, production cost is reduced, and machining 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 kinds 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 and neutral points of each phase winding; more than 90% of the stator windings in the prior art are the number of slots per pole and each phase Both are greater than or equal to 2, but if the phases of the stator winding are connected in series, the twisting direction of the welding end in the same layer of slots or the pitch of the twisting slots will be inconsistent, the manufacturing pr...

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 kinds 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 and neutral points of each phase winding; more than 90% of the stator windings in the prior art are the number of slots per pole and each phase Both are greater than or equal to 2, but if the phases of the stator winding are connected in series, the twisting direction of the welding end 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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