Stator, motor, compressor and vehicle

Abstract

The invention provides a stator, a motor, a compressor and a vehicle, the stator comprises a stator iron core, wherein the stator iron core comprises a plurality of tooth parts, the plurality of tooth parts are distributed along the circumferential direction of the stator iron core, and a stator slot is arranged between two adjacent tooth parts; a winding which is wound on the tooth parts and extends into the stator slots; and a first insulating part, wherein at least part of the first insulating part is located in a gap between the windings on the two adjacent tooth parts, the first insulating part comprises a first insulating part and a second insulating part which are connected, in the same stator groove, the first insulating part is in contact with one winding, the second insulating part is in contact with the other winding, and in a cross section perpendicular to the axis direction of the stator core, the length of the first insulating part is greater than that of the second insulating part. According to the stator provided by the invention, the first insulating part is optimized, that is, the lengths of the first insulating part and the second insulating part are optimized, so that the stator has the characteristics of high insulating reliability, good fixity, easiness in automatic production and low cost.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular, to a stator, a motor, a compressor and a vehicle. Background technique [0002] At present, permanent magnet motors are widely used in air conditioners, automotive compressors and other fields. Under the dual constraints of energy efficiency level improvement and functional requirements, the power density, efficiency and reliability requirements of motors are gradually increasing. With the gradual improvement of motor power level and reliability requirements, the insulation performance of the motor stator is also challenged. When the stator adopts concentrated winding, the area of ​​the stator slot will be fully utilized to increase the power density of the motor. Two teeth in a single stator slot The copper wires wound on the top have a small gap. In order to ensure electrical safety, it is necessary to use phase insulation to separate the windings on different teeth in th...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, a phase insulation structure makes the area of ​​the stator slots on both sides asymmetrical, resulting in a waste of slot area, and there are two bends, which reduces the ease of automation and reliability

Another motor insulation structure, the slot insulation and the phase insulation are integrated, but the process of cutting the insulation film is added in the process of forming the divided stator core into a ring shape, the insulation shape is complicated, and the division of the core is added. round time difficulty

In addition, if the phase insulation size is unreasonable or if the phase insulation is damaged or falls off, the creepage distance between the winding phases will be insufficient, and there is a risk of phase-to-phase faults once the motor is running under load.

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