Stator assembly and motor

Abstract

The invention discloses a stator assembly and a motor. The stator assembly is suitable for the motor with z slots, 2p poles and m phases, the slot number q of each pole and each phase of the motor is equal to z / m / (2p), the parallel branch number is a, a is smaller than or equal to q, and the stator assembly comprises a stator core, a first U-shaped conductor section, a second U-shaped conductor section, a third U-shaped conductor section and a fourth U-shaped conductor section. The span between a first in-groove part and a second in-groove part of the first U-shaped conductor section is y-1, and y is equal to z / (2p); the span between a first in-groove part and a second in-groove part of the second U-shaped conductor section is y-1; the span between a first in-groove part and a second in-groove part of the third U-shaped conductor section is y; and the span between a first in-groove part and a second in-groove part of the fourth U-shaped conductor section is y+1. According to the stator assembly, the number of welding spots is small, the U-shaped conductor sections are convenient to fix, the winding voltage difference between adjacent groove layers in the same groove is small, the insulation breakdown risk of a motor can be effectively reduced, and reliability is high.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a stator assembly and a motor. Background technique [0002] In the field of motor technology, most of the windings used are in the form of welding both the upper and lower ends of the stator core. There are many welding points and the process is complicated. In addition, after the flat wire is off the line, it is difficult to fix it accurately and the production is difficult. From the analysis of the electrical connection, the voltage difference between different layers of the winding is high in the same slot. When used under high voltage, the layers are easy to break down, resulting in a short circuit and causing the motor to fail. The motor is full-pitch winding, and it is difficult to exert the maximum power performance of the motor under the limitation of voltage and current. Contents of the invention [0003] The invention provides a stator assembly, which has the advanta...

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Problems solved by technology

[0002] In the field of motor technology, most of the windings used are in the form of welding both the upper and lower ends of the stator core. There are many solder joints and the process is complicated. In addition, after the flat wire is offline, it is difficult to fix it accurately and the production is difficult.

From the analysis of the electrical connection, the voltage difference between different layers of the winding in the same slot is high. When used under high voltage, the layers are easy to break down, resulting in a short circuit and causing the motor to fail.

The motor is full-pitch winding, and it is difficult to exert the maximum power performance of the motor under the limitation of voltage and current

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