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Stator winding of AC generator

A technology of alternator and stator winding, which is applied to the shape/pattern/structure of winding conductors, the shape/pattern/structure of magnetic circuit, the static parts of magnetic circuit, etc. It is difficult to use manual or mechanical offline, 48V system cannot generate high-speed power, etc., to achieve the effect of regular connection and outlet, uniform size of winding and coil, and reduced end size

Pending Publication Date: 2018-01-09
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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, which uses square coils for winding motor windings, but their disclosed connection methods are complicated, and the winding coils Various forms are not conducive to production; Patent Document 3 (CN201110358151.0) and Patent Document 4 (CN201510312428.4) respectively disclose a winding method for a square coil of a motor stator, but they are respectively aimed at 108 slots, 120 slots and 126 slots. The motor with slots is not suitable for motors with 48 slots. It is easy to cause the back electromotive force of the motor to be too high, and there are problems such as being unable to generate electricity at high speed when used in a 48V system.

Method used

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Examples

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Effect test

Embodiment 1

[0027] Example 1: 6-pitch stator winding with 3-phase 2-way parallel connection

[0028] In the 6-pitch stator winding (U1, U2 / V1, V2 / W1, W2) that implements three-phase 2-way parallel connection, if the outlet terminals of the first phase U-phase are set to two arbitrary adjacent slots, Such as image 3 with Figure 4 As shown, in this embodiment, the first slot and the second slot are selected as the outlet terminals U1 and U2 of the U phase respectively, then the coils to be connected to U1 are distributed in slot 1, slot 7, slot 13, slot 19, slot 25, and slot 31 In slot 1, slot 37 and slot 43, the coils to be connected to U2 are distributed in slot 2, slot 8, slot 14, slot 20, slot 26, slot 32, slot 38 and slot 44.

[0029] In this embodiment, the specific connection method of U1 is as follows: place the lead wires in the second layer of the first slot; insert a large hairpin square coil into the first layer of the seventh slot and the 4th layer of the 13th slot, wher...

Embodiment 2

[0033] Example 2: 6-pitch stator winding with three-phase and one parallel connection

[0034] In the 6-pitch stator winding (U1, U2 / V1, V2 / W1, W2) that implements three-phase 1-way parallel connection, if the U-phase outlet is set to two arbitrary adjacent slots, such as image 3 with Figure 4 As shown, in this embodiment, the first slot and the second slot are selected as the outlet terminals U1 and U2 of the U phase respectively, and the coils to be connected to U1 are distributed in slot 1, slot 7, slot 13, slot 19, slot 25, and slot 31 , 37 and 43 slots, the coils to be connected to U2 are distributed in 2 slots, 8 slots, 14 slots, 20 slots, 26 slots, 32 slots, 38 slots and 44 slots.

[0035] In this embodiment, the specific connection method of U1 is as follows: place the lead wires in the second layer of the first slot; insert a large hairpin square coil into the first layer of the seventh slot And the 4th layer of the 13th slot, where the legs placed on the 1st la...

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Abstract

The present invention discloses a stator winding of an AC generator. The stator comprises 8 poles, and 48 equidistantly formed rectangular stator slots. The winding is in the form of a distributed winding. A coil is inserted into the each of the stator slots, wherein the cross-sectional shape of the coil is square. In this way, the winding is of a 3-phase and 2-way parallel type 6-pitch full-pitchwinding structure, or a 3-phase and 1-way parallel type 6-pitch full-pitch winding structure, wherein the number of slots per pole and per phase is 2. Each square coil is inserted into different layers of 2 different stator slots in the stator according to a predetermined rule to form the stator winding. 4 coils are placed in each stator slot and form a first layer, a second layer, a third layerand a fourth layer from outside to inside in sequence according to the radial direction of the stator. According to the invention, the contradictory problem between the performance of the generator and the volume of the generator can be well solved. The height of the end of the stator winding of the generator is reduced. The overall volume of the generator is reduced and the slot full rate of thewinding is improved. The performance of the generator is enhanced.

Description

technical field [0001] The invention relates to an alternator for a new energy vehicle, in particular to a stator winding 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 winding coils. Compar...

Claims

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Application Information

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IPC IPC(8): H02K1/16H02K3/12H02K3/28
Inventor 宫健苍衍郭守仑王金昊曾金玲孟凡胜
Owner CHINA FIRST AUTOMOBILE
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