Seventy-two-slot six-layer flat copper wire mixed winding structure and motor using winding structure

A hybrid winding and flat copper wire technology is applied to the motor winding structure and the motor field applying the winding structure. The effect of simplifying the layout of the structure

Pending Publication Date: 2020-02-28
ZHEJIANG LOONGSON ELECTRIC DRIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In an existing flat copper wire wave winding armature winding, when the number of conductor layers per slot is 4, 6, 8... and the number of parallel branches is even, since the adjacent elements of the smallest coil unit are distributed on the same layer, The double-layer wave winding structure includes components distributed in different layers. The inductance values ​​of the components in different layers are different. The minimum coil unit itself is not self-balancing, and it is impossible to change the series-parallel connection between the minimum coil units. to achieve power changes at multiple power levels

Method used

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  • Seventy-two-slot six-layer flat copper wire mixed winding structure and motor using winding structure
  • Seventy-two-slot six-layer flat copper wire mixed winding structure and motor using winding structure
  • Seventy-two-slot six-layer flat copper wire mixed winding structure and motor using winding structure

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Embodiment 1

[0025] Such as figure 1 and figure 2 As shown, the 72-slot 6-layer flat copper wire hybrid winding structure of the present invention includes a three-phase hybrid winding structure distributed in at least six winding layers, and each phase hybrid winding structure includes 2 winding branches composed of a plurality of winding units road. The winding units on each winding branch are distributed in 6 pairs of poles, and the number of winding units distributed under each pole is different. The number of winding units of a winding branch under 8 poles is distributed as follows: 9, 6, 6, 6, 9, 12, 12, 12, and the other winding branch corresponds to the winding under the pole The number of units is distributed as follows: 9, 12, 12, 12, 9, 6, 6, 6. The two winding branches form a uniform and symmetrical distribution in different winding layers.

[0026] In this embodiment, adjacent winding elements either share the same slot or are separated by a slot, and are alternately conn...

Embodiment 2

[0031] Such as image 3 As shown, an expanded view of a 72-slot, 12-pole, 6-layer flat copper wire winding structure includes a three-phase hybrid winding structure distributed in at least six winding layers. Each phase hybrid winding structure includes 2 winding branches composed of 6 winding units. The 6 winding units are distributed under 6 pairs of poles in one-to-one correspondence. Each winding unit has 6 windings connected in series through hybrid connection. Each winding branch runs through all the slot numbers of the corresponding phase, and a lower pole winding is distributed in different odd and even layers in adjacent slots.

[0032] In this embodiment, adjacent winding elements are separated by one winding layer. Each winding branch includes a U-shaped lead-out terminal and a welding terminal. The pitches of the welded ends of each winding branch are equal, which is convenient for automatic wire insertion. The lead-out wire ends of each winding branch are arr...

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Abstract

The object of the present invention is to disclose a seventy-two-slot six-layer flat copper wire mixed winding structure and a motor using the winding structure. The seventy-two-slot six-layer flat copper wire mixed winding structure includes three phases of mixed winding structure distributed in at least six winding layers. Each phase of the mixed winding structure is composed of two winding branches. The winding branches are each formed by a plurality of winding elements evenly distributed in each of the winding layers, and adjacent winding elements are alternately distributed in the same slot or adjacent slots. Compared with the prior art, the winding structure can easily realize automatic wire insertion and convenient connection, simplifies a wire connection technique, greatly simplifies the structural layout of the profiled wire at a winding end portion, and reduces the space size occupied by the end portion of the winding structure so as to achieve the object of the present invention.

Description

technical field [0001] The invention relates to a motor winding structure and a motor using the winding structure, in particular to a 72-slot 6-layer flat copper wire hybrid winding structure and a motor using the winding structure. Background technique [0002] In the long run, miniaturization and high speed will be the main development trend of new energy vehicle motors, and miniaturization will inevitably require a significant increase in the power density of the motor; The cooling method can significantly improve the heat dissipation of the motor, especially for motors with flat copper wire windings. [0003] The difference between flat wire motors and round wire motors lies in the forming method of copper wires. Flat wires are conducive to the improvement of motor slot fill rate. Generally, the slot fill rate of round wire motors is about 40%, while the slot fill rate of flat wire motors can reach More than 60%. The improvement of the slot fullness rate means that mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28H02K3/12
CPCH02K3/12H02K3/28
Inventor 王丽
Owner ZHEJIANG LOONGSON ELECTRIC DRIVE TECH CO LTD
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