Novel winding motor stator

Abstract

The invention discloses a novel winding motor stator. The novel winding motor stator comprises a stator core body and a stator winding; 48 rectangular stator grooves, which are isolated at predetermined distances, are formed in the stator core body; the stator winding consists of hair clamps and hair pins which are inserted into the stator grooves based on a predetermined arrangement mode and are bent and then welded based on a certain rule to form the stator winding; the cross sections of the hair clamps and hair pins are square; and first to fourth layers of the hair clamps and hair pins are arranged in the radial direction of the stator from outside to inside in sequence in the stator grooves of the stator core body in the radial direction of the stator core body. By virtue of the novel winding motor stator, the problem of contradiction between the performance and the volume of a generator can be solved, the end height of the stator winding of the generator is lowered, the overall volume of the generator is reduced, the winding groove space factor is improved, and the performance of the generator is improved.

Description

technical field [0001] The invention relates to an alternator for a new energy vehicle, in particular to a stator of a novel winding motor with a compact structure and a high-performance generator. Background technique [0002] With the rapid development of new energy vehicle technology, the performance requirements for alternators are getting higher and higher. The increase in performance will inevitably lead to an increase in the volume of the generator, but the space size of the engine room of new energy vehicles, especially light hybrid vehicles, is very limited. , leading to the increasingly prominent contradiction between the performance and volume of the generator. [0003] At the same time, generators can be classified into distributed winding generators and concentrated winding generators according to the stator coil winding scheme. Distributed winding generators can be divided into circular coils and square coils according to the cross-sectional shape of the stato...

AI Technical Summary

Problems solved by technology

However, compared with circular coils, square coils have difficulties in coil winding and offline, and it is difficult to use manual or mechanical offline coils.

[0004] Patent Document 1 (CN200780022091.7) and Patent Document 2 (CN201510789339.9) disclose a multi-set segmented hairpin winding, using square coils for winding motor windings, but their disclosed connection methods are complicated, which is not conducive to Production; Patent Document 3 (CN201110358151.0) and Patent Document 4 (CN201510312428.4) respectively disclose a winding method of a square coil of a stator core, but they are respectively aimed at motors with 108 slots, 120 slots and 126 slots, It is not suitable for 48-slot motors, which may easily cause the back EMF of the motor to be too high, and there are problems such as being unable to generate high-speed power when used in a 48V system.

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