Stator assembly and motor with same

Abstract

The invention discloses a stator assembly and a motor with the same. The stator assembly comprises a stator and a stator winding, the stator comprises a stator iron core, and Z coil grooves are distributed in the inner wall of the stator iron core in the circumferential direction; the stator winding comprises three phases of windings, each phase of winding comprises a plurality of branches which are connected in parallel, a coil of each branch of each phase of winding comprises a special-shaped wire and a hairpin coil, the stator winding is formed by inserting the hairpin coil and the special-shaped wire into corresponding coil grooves, and the M layers of coils arranged from the notch to the slot bottom in each coil slot are electrically connected at the non-closed ends of the hairpin coils; and the hairpin coils comprise a first type of hairpin coils with the span of y-1 coil slots and spanning on the same layer, a second type of hairpin coils with the span of y coil slots and spanning on the same layer, and a third type of hairpin coils with the span of y coil slots and spanning on different layers. According to the stator assembly and the motor, the number of welding spots is small, the coil technology is simple, cost is low, and the interlayer coils in the same coil groove are not prone to short circuit.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a stator assembly and a motor including the stator assembly. Background technique [0002] In the related art, a method for connecting rotating stator components is disclosed. The armature adopts a wave-winding method, and the coil is wave-wound from the outermost layer to the innermost layer, and then reversely wave-wound to the outermost layer. [0003] There are some defects in the wiring method of the above windings. For example, from the perspective of the manufacturing process and mass manufacturers, both ends of the armature axis need to be welded, and there are many solder joints; The process is difficult; for another example, in terms of electrical connection, the wave winding method is likely to generate unbalanced current and cause circulation. Contents of the invention [0004] The present invention aims to solve at least one of the technical problems existing in th...

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Problems solved by technology

[0003] There are some defects in the wiring method of the above windings. For example, from the perspective of the manufacturing process and mass manufacturers, both ends of the armature axis need to be welded, and there are many solder joints; The process is difficult; for another example, in terms of electrical connection, the wave winding method is easy to generate unbalanced current and cause circulation phenomenon

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