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Flat wire armature winding and motor

A technology of armature winding and flat wire motor, which is applied to flat wire armature winding and motor. field, to achieve the effect of improving the magnetic potential waveform, increasing additional loss, improving efficiency and temperature rise performance

Inactive Publication Date: 2021-12-10
EVERGRANDE NEW ENERGY AUTOMOTIVE INVESTMENT HLDG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a flat wire armature winding, which can achieve short-distance distribution to weaken the 5th and 7th potential harmonics, thereby improving the vibration noise and harmonic loss caused by harmonics question

Method used

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  • Flat wire armature winding and motor
  • Flat wire armature winding and motor
  • Flat wire armature winding and motor

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0036] In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, the term "connection" can be a fixed connection, or It can be a detachable connection or an integrated connection; it can be a direct connection or an indirect connection through an intermediary; it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situat...

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Abstract

The invention relates to a motor, and discloses a flat wire armature winding. The winding comprises a stator, a plurality of stator grooves are formed in the stator, N layers of conductors are arranged in each stator groove, coils are sequentially stacked and embedded from the first layer to the Nth layer of each conductor, and the embedded coils form a first group of coils in the stator grooves, the coils are sequentially stacked and embedded into the adjacent stator grooves from the (N-1)th layer to the second layer to form a second group of coils, the first group of coils and the second group of coils are arranged at intervals, the welding ends of the coils are connected end to end, finally the armature winding is formed, and N is an even number larger than or equal to 4. The hairpin coil is wound in the winding in a lap mode, the structure of the hairpin coil is designed, the formed winding structure is distributed in a short distance mode, generated harmonic electromotive force can be effectively weakened, and the magnetic potential waveform is improved; and on the other hand, the potential between the two branches connected in parallel is balanced, additional loss caused by ring current is avoided, and the effects of improving the motor efficiency and the temperature rise performance by the flat wire technology can be effectively exerted.

Description

technical field [0001] The present invention relates to motors, in particular to a flat wire armature winding. Furthermore, the invention also relates to an electric machine. Background technique [0002] With the rapid development of new energy vehicle technology, the performance requirements for vehicle drive motors are getting higher and higher. The main development trend of new energy vehicle motors is miniaturization and high speed, and miniaturization will inevitably require a significant increase in motor efficiency. . [0003] Since the flat wire motor can significantly improve the slot full rate and motor efficiency of the motor, more and more flat wire motors are used in the drive system of new energy vehicles, while most of the existing flat wire motors use full-pitch wave windings. For example, a Chinese patent with publication number CN209881519U discloses a stator winding of a three-phase flat wire motor. There are 8 layers of conductors in each flat wire st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28H02K3/12
CPCH02K3/28H02K3/12
Inventor 朱标龙许冬李鹏孔勇进张诗香庄朝晖
Owner EVERGRANDE NEW ENERGY AUTOMOTIVE INVESTMENT HLDG GRP CO LTD
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