Motor stator and motor

Abstract

The invention provides a motor stator and a motor. The motor stator comprises stator windings, each phase winding comprises two first conductor groups, a plurality of second conductor groups and a plurality of third conductor groups which are connected in series; and each first conductor group comprises a first large conductor, a first conductor and a first small conductor, and the first conductor groups are located on the first radial layer and the Mth radial layer of a stator core. According to the technical scheme of the motor stator in the embodiment of the invention, busbars connected in series among all phases of windings in the related technology are omitted, and the first conductor groups, the second conductor groups, the third conductor groups and fourth conductor groups of each phase of winding can be directly connected, so that each phase of winding and a neutral point can be arranged in any slot and any layer of the winding, the manufacturing process complexity is reduced, the production cost is reduced, the material cost is reduced, and the 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 conductors, which are arranged in a certain way. Various types of conductors include U-shaped conductors and S-shaped conductors, which penetrate into the slots of the stator core to form the three-phase motor required. Windings, there are many types of hairpin conductors used in the prior art, and the arrangement is complicated, and a large number of bus bars and bus bars are needed to connect the branches of each phase winding; [0003] 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, there will be twisting directions or twisting of the welding ends located in the same layer of slots The groove spacing is inconsistent, the manufacturing proc...

AI Technical Summary

Problems solved by technology

[0002] The stator winding includes a plurality of hairpin conductors, which are arranged in a certain way. Various types of conductors include U-shaped conductors and S-shaped conductors, which penetrate into the slots of the stator core to form the three-phase motor required. Windings, there are many types of hairpin conductors used in the prior art, and the arrangement is complicated, and a large number of bus bars and bus bars are needed to connect the branches of each phase winding;

[0003] 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, there will be twisting directions or twisting of the welding ends located in the same layer of slots Inconsistent groove spacing, complicated manufacturing process, difficult forming, high production cost and low processing efficiency

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