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Three-phase motor stator and electric vehicle drive motor

A three-phase motor and stator technology, used in electric vehicles, motors, electric components, etc., can solve problems such as AC loss

Active Publication Date: 2020-12-18
FAFA AUTOMOBILE (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hairpin stator has obvious skin and proximity effects at high frequencies, which causes additional AC loss; and, when new electric vehicles require higher speeds, it will cause the electrical frequency of the motor to increase as the speed increases. The higher the value, the more problematic the skin and proximity effects of motors with hairpin stators

Method used

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  • Three-phase motor stator and electric vehicle drive motor
  • Three-phase motor stator and electric vehicle drive motor
  • Three-phase motor stator and electric vehicle drive motor

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Embodiment Construction

[0038] The specific implementation manners of the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described here are only used to illustrate and explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention.

[0039] In the embodiments of the present invention, unless otherwise stated, the used orientation words such as "up, down, left, right, inside, outside" usually refer to the relative orientations shown in the drawings or embodiments.

[0040] Such as Figure 1AAs shown, the stator of a three-phase motor according to an embodiment of the present invention, the stator includes a stator core, and 72 rectangular stator slots are opened on the stator core, and the stator slots are sequentially numbered as 1 in a clockwise (or counterclockwise) direction - No. 72 slot, and the coil (the...

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Abstract

The embodiment of the invention provides a three-phase motor stator and an electric vehicle drive motor, belonging to the field of new energy vehicle motors. The three-phase motor stator comprise a stator iron core, A plurality of stator slots are formed in the stator core, wherein the stator windings are arranged in the plurality of stator slots in six layers, the number of slots per pole per phase is 3, and each phase stator coil in the three-phase stator coil is divided into three groups, and each group of stator coils occupies two adjacent stator slots side by side, wherein one stator slotis displaced between two adjacent groups of stator coils. As a result, the harmonics of the motor are effectively reduced, the AC copper consumption caused by skin effect and proximity effect is reduced, the voltage and current of the high-voltage system are matched, and the purposes of high torque, low torque ripple, low vibration noise, good heat dissipation performance and high electrical reliability are achieved.

Description

technical field [0001] The invention relates to the technical field of new energy vehicle motors, in particular to a three-phase motor stator and an electric vehicle drive motor. Background technique [0002] For three-phase AC motors, especially the drive motors of electric vehicles, high torque, low torque ripple, low vibration and noise, good heat dissipation performance, and high electrical reliability are required, among which the design and arrangement of stator coils is particularly critical. [0003] At present, the motor voltage of electric vehicles is generally between 300V and 500V, and it generally adopts a four-layer winding structure. However, when electric vehicles require a higher level of motor voltage, the design and arrangement of stator coils in the prior art limits the performance of the motor. . [0004] In addition, flat copper wire hairpin (Hairpin) stators are increasingly used in electric vehicle motors to improve motor power density, efficiency an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/16H02K3/34H02K3/28
CPCH02K1/165H02K3/28H02K3/345H02K2213/03Y02T10/64
Inventor 陈毅傅振兴
Owner FAFA AUTOMOBILE (CHINA) CO LTD
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