Stator assembly and motor

Abstract

The invention belongs to the technical field of motors, and particularly relates to a stator assembly and a motor. The stator assembly comprises a stator core and a winding. The stator core is provided with a plurality of stator grooves, and the stator grooves are sequentially arranged in the circumferential direction of the stator core and are in an annular array shape. The winding is embedded and wound in the stator groove, and the winding is formed by winding a rectangular conductor; a plurality of layers of rectangular conductors can be installed in each stator groove, and the rectangular conductors are sequentially arranged in the radial direction of the stator iron core. Wherein the sectional area of the rectangular conductor closest to the center of the stator core is larger than the average sectional area of all the rectangular conductors in the stator slots. By increasing the area of the conductor in the slot close to the center of the stator core, the loss density of the conductor is reduced, and heating and heat dissipation of different conductors in the stator slot are balanced, so that the purpose of improving the heat dissipation performance of the motor by reducing the maximum temperature of the motor is achieved.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a stator assembly and a motor. Background technique [0002] With the development of the new energy automobile industry becoming more mature, the demand for product cost reduction is becoming more and more urgent. As a key component of the drive system of new energy vehicles, the drive motor accounts for a large cost, and the miniaturization of the motor is an important direction to reduce costs. However, one of the main factors restricting the miniaturization of the motor is the heat generation and heat dissipation of the motor. If the heat generation of the motor can be effectively reduced or the heat dissipation of the motor can be improved, it will help the miniaturization of the motor, thereby achieving the effect of cost reduction. [0003] In terms of reducing the heat generation of the motor, it is common to use low-loss materials to reduce the heat generation, or use fla...

AI Technical Summary

Problems solved by technology

At present, no effective improvement measures have been proposed for the uneven distribution of heat generation of the conductors in the slot, and no effective improvement measures have been proposed for the difference in heat dissipation between the inner and outer layers of the conductor in the slot, which limits the further improvement of the motor performance

There are few considerations from the perspective of motor cooling balance effect

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