Hybrid conductor winding structure and motor with same and application of hybrid conductor winding structure

Abstract

The invention discloses a hybrid conductor winding structure, which comprises low-resistivity conductors, high-resistivity conductors and an end part connection ring, wherein the low-resistivity conductors and the high-resistivity conductors are bent into a hairpin form separately and then inserted or embedded into stator slots (1 and 2), wherein the low-resistivity conductors are arranged in notches of the stator slots (1 and 2) and the high-resistivity conductors are arranged at the bottoms of the stator slots (1 and 2); and the end part connection ring is used for achieving fixed connection of the end parts of the low-resistivity conductors and the high-resistivity conductors, thereby forming the hybrid conductor winding structure. The invention further discloses a motor with the winding structure. The invention further discloses an electric automobile with the motor. AC losses of conductors in the notches when the motor runs at a high speed can be effectively reduced, the local temperature rise of the conductors in the notches is reduced, the problem of a high DC loss when the motor runs at a low speed is taken into account and the operating efficiency of the motor is improved.

Description

technical field [0001] The invention belongs to the technical field of motor conductor windings, and more specifically relates to a mixed conductor winding structure, a motor with the winding structure and applications thereof. Background technique [0002] As the climate worsens and energy shortages become more and more serious, sustainable green travel solutions have been highly praised by environmentalists and vigorously promoted by the government. Compared with traditional fuel vehicles, electric vehicles have attracted much attention due to their advantages of zero or small emissions. Developing the new energy industry and vigorously promoting electric vehicles has become an important measure for the country to reduce environmental pollution and realize overtaking in curves in the automobile industry. However, compared with traditional fuel vehicles, electric vehicles have problems such as higher price and lower cruising range. Therefore, it is of great significance f...

AI Technical Summary

Problems solved by technology

[0005] However, the cross-sectional area of ​​the rectangular conductor winding conductor is large, and when the motor runs at high speed, it will generate a large AC copper loss, especially at the slot position of the stator, the AC copper loss will be greater, which will reduce the efficiency of the motor and may cause Local overheating and insulation damage of windings

In addition, compared with the traditional enameled wire winding, although the motor slot fill rate is increased, the amount of copper used is more. Due to the high density of copper, the price is also more expensive, and the weight and cost of the motor will also increase.

Therefore, how to reduce the high-speed AC copper loss while using rectangular copper conductor windings has become a challenge in winding design

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