Insulating structure of stator slots of flat wire motor and manufacturing process thereof

A motor stator and stator slot technology, applied in the shape/style/structure of winding insulation, laying solid insulation, electric components, etc., can solve the problem of increasing the thermal resistance between conductors and stator cores, affecting the conductor occupation in the slot Improve the area ratio, increase the power density of the motor, etc., to achieve the effect of increasing the full rate of the stator slot, saving the space in the stator slot, and improving the production efficiency

Pending Publication Date: 2017-02-22
BORGWARNER POWERDRIVE SYST (TIANJIN) CO CHINA
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned double B-type flat wire conductor and the insulation structure in the stator slot, the insulating paper occupies a large space in the slot, which affects the further improvement of the conductor occupation rate in the slot, and due to the consideration of manufacturability and mechanical strength, the insulating paper cannot Too thin will increase the thermal resistance between conductors and between conductors and stator core, which is not conducive to further increasing the power density of the motor. Therefore, it is necessary to design a new flat wire conductor and insulation structure in the stator slot

Method used

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  • Insulating structure of stator slots of flat wire motor and manufacturing process thereof
  • Insulating structure of stator slots of flat wire motor and manufacturing process thereof
  • Insulating structure of stator slots of flat wire motor and manufacturing process thereof

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Embodiment approach

[0026] figure 1 It is a schematic diagram of the stator structure of a flat wire motor, wherein 1 is a stator slot and 2 is a stator core. The inside of the stator slot 1 is a flat wire conductor. In this embodiment, four flat wire conductors are arranged inside each stator slot as an example.

[0027] figure 2 It is an enlarged schematic diagram of the internal insulation structure of the stator slot of the existing flat wire motor, wherein 11 is a flat wire conductor, and 12 is insulating paper, and the flat wire conductors 11 are arranged side by side in the stator slot 1, and the insulating paper 12 is folded into The B-shaped structure is placed between the conductors of the flat wire conductor 11 and between the flat wire conductor 11 and the stator slot 1. The width of the stator slot 1 is Bs and the height is Hs. The insulating paper The thickness of 12 is t, then the effective slot area of ​​the stator slot 1 is (Bs-2*t)*(Hs-6t).

[0028] image 3 It is an enlarge...

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Abstract

The invention discloses an insulating structure of stator slots of a flat wire motor and a manufacturing process. Insulating materials are arranged in the stator slots and the outer sides of flat wire conductors to realize insulation between the stator cores and the flat wire conductors and between the flat wire conductors respectively; moreover, insulating paper is eliminated, so that a part of spaces in the stator slots are saved to further make contributions to the space filling factor.

Description

technical field [0001] The invention relates to a stator slot structure of a flat wire motor, in particular to an insulating structure and a manufacturing process of a stator slot of a flat wire motor. Background technique [0002] At present, flat wire conductors are mainly used in large-scale electrical equipment such as wind turbines and hydroelectric generators. In recent years, foreign brands have large-scale applications in mid-to-high-end vehicle generators, especially Toyota and Remy customers. Among the general-purpose vehicles, flat wire motors are the most widely used. Among new energy vehicles, Toyota Prius, Lexus, BMW and other hybrid vehicles, as well as pure electric vehicles such as Leaf and Volt, currently use motors made of flat wire conductor Hairpin technology. [0003] The motor made of flat wire conductor Hairpin technology is also a motor with distributed winding technology. Compared with the traditional distributed winding motor with scattered and em...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/34H02K15/10
CPCH02K3/345H02K15/10
Inventor 余国权
Owner BORGWARNER POWERDRIVE SYST (TIANJIN) CO CHINA
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