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Stator assembly and motor

A technology for stator windings and components, which is applied to the shape/style/structure of electromechanical devices, electrical components, and winding conductors, and can solve problems such as high magnetomotive force, increased AC copper loss, and reduced motor efficiency.

Active Publication Date: 2021-12-24
BYD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]In the field of motor technology, the flat wire windings of motors are mostly arranged at equal intervals, so that the windings do not show a distribution effect, and the magnetomotive force is relatively high, thereby increasing the Vibration noise of the motor
Moreover, when the motor is running, the AC copper loss of the flat wire winding near the slot of the stator will increase sharply, and the increase in AC copper loss will cause serious heating of the flat wire winding of the slot, thereby reducing the efficiency of the motor
Due to the uneven distribution of AC copper loss of the flat wire winding in the same stator slot, it is very easy to cause local overheating of the winding, reduce the life of the winding, and increase the risk of the winding being burned out

Method used

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Embodiment Construction

[0069] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0070] Refer below Figure 1-Figure 15 A stator assembly 1000 and an electric machine according to an embodiment of the present invention are described.

[0071] Such as Figure 3-Figure 4 As shown, a stator assembly 1000 according to an embodiment of the present invention includes a stator core 100 and a stator winding 200 .

[0072] Specifically, refer to Figure 3-Figure 6 , the stator core 100 has a plurality of stator slots 110 arranged at intervals along the circumferential direction of the stator core 100, and each stator slot ...

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Abstract

The invention discloses a stator assembly and a motor. The stator assembly comprises a stator core, a first stator winding and a second stator winding. The stator core is provided with a plurality of stator slots, each stator slot is provided with M slot layers, and M is an even number greater than or equal to 8. The stator winding comprises first U-shaped conductor sections and second U-shaped conductor sections, the innermost groove layer, the outermost groove layer, the radially outward (M / 2) th groove layer and the radially outward (M / 2 +1)th groove layer of each stator groove are each provided with one first U-shaped conductor section, the pitch of the first U-shaped conductor sections is A; the other groove layers except the innermost groove layer, the outermost groove layer, the radially outward (M / 2) th groove layer and the radially outward (M / 2 +1)th groove layer of each stator groove are each provided with a second U-shaped conductor section, the pitch of the second U-shaped conductor sections is B, and A is not equal to B. According to the stator assembly, vibration noise is low, AC copper consumption is small, heat is little, and therefore the service life of the stator winding is prolonged.

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, the flat wire windings of motors are mostly arranged at equal intervals, so that the windings do not show a distribution effect, and the magnetomotive force is relatively high, thereby increasing the vibration noise of the motor. Moreover, when the motor is running, the AC copper loss of the flat wire winding near the slot of the stator will increase sharply, and the increase in AC copper loss will cause serious heating of the flat wire winding of the slot, thereby reducing the efficiency of the motor. Due to the uneven distribution of AC copper loss of the flat wire winding in the same stator slot, it is very easy to cause local overheating of the winding, reduce the life of the winding, and increase the risk of the winding being burned out. Contents of the invention [0003] The inv...

Claims

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Application Information

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IPC IPC(8): H02K3/12H02K3/28
CPCH02K3/12H02K3/28H02K2213/03
Inventor 张斌王阳阳靳浩宁
Owner BYD CO LTD
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