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Hairpin type winding motor stator and assembling method thereof

A motor stator and assembly method technology, applied in the manufacture of motor generators, electromechanical devices, stator/rotor bodies, etc., can solve the problems of increased resistance at welding points, easy rebound of winding copper wires, damage to insulating paint, etc., to achieve reduction The effect of small damage

Pending Publication Date: 2021-05-28
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that during the assembly process of the hairpin winding motor, the copper wire of the winding is easy to rebound after being bent, the resistance of the welding place increases and the insulating paint is damaged due to welding, and now provides a stator of the hairpin winding motor and its assembly method

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  • Hairpin type winding motor stator and assembling method thereof
  • Hairpin type winding motor stator and assembling method thereof
  • Hairpin type winding motor stator and assembling method thereof

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specific Embodiment approach 1

[0026] Specific implementation mode one: refer to Figures 1 to 7 Specifically explain this embodiment, a hairpin-type winding motor stator described in this embodiment includes: a stator core, a hairpin winding 3 and a sheath 4, and the stator core includes 4 outer stator cores 1 and Q inner stator cores 2. Q is the number of stator slots.

[0027] The four outer stator cores 1 are all arc-shaped, and the end-to-end connection of the four outer stator cores 1 can form a closed circular structure. The inner arc surface of the outer stator core 1 is evenly equipped with Q / 4 teeth 1-1, each Grooves 1-2 are provided on the top surfaces of the teeth 1-1.

[0028] The circular structure formed by four outer stator cores 1 is sleeved on the outer circumference of the hairpin winding 3 , and Q teeth 1 - 1 are respectively inserted into the gaps on the outer circumference of the hairpin winding 3 .

[0029] The Q inner stator cores 2 are all in the shape of a "convex" shape, the bot...

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment is a method for assembling the hairpin winding motor stator described in Embodiment 1, which includes the following steps:

[0035] Step 1: Insert Q teeth 1-1 of the four outer stator cores 1 into the gaps on the outer circumferential surface of the hairpin winding 3 respectively, and the end-to-end connection of the four outer stator cores 1 can form a closed circular structure;

[0036] Step 2: Insert the bosses 2-1 of the Q inner stator cores 2 into the grooves 1-2 on the top surfaces of the Q teeth 1-1, and the bottom surfaces of the Q inner stator cores 2 can be enclosed to form a closed circular structure.

[0037] Step 3: Embedding an annular sheath 4 on the inner peripheral surface of the circular structure surrounded by Q inner stator cores 2 . The sheath 4 is closely attached to Q inner stator cores 2 , and plays a role of tightly combining and fixing the outer stator cores 1 and the inner stator cores 2 .

[0038] Due to the re...

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Abstract

The invention discloses a hairpin type winding motor stator and an assembling method thereof, relates to the technical field of motor structures, and aims to solve the problems that in the assembling process of a hairpin winding motor, a winding copper wire is easy to rebound after being bent, and the resistance at a welding position is increased and an insulating paint leather is damaged due to welding. According to the invention, the Q teeth of four outer stator iron cores are respectively inserted into the gaps of the outer circumferential surface of a hairpin winding, the four outer stator iron cores are connected end to end to form a closed circular structure, the bosses of Q inner stator iron cores are respectively inserted into the grooves in the top surfaces of the Q teeth, the bottom surfaces of the Q inner stator iron cores can define a closed circular structure, and an annular sheath is embedded and fixed on the inner circumferential surface of a circular structure encircled by the Q inner stator iron cores. According to the invention, the process steps of winding bending, welding and the like can be omitted, and damage to winding copper wires and winding insulating paint is reduced.

Description

technical field [0001] The invention belongs to the technical field of motor structure, and in particular relates to a stator of a motor. Background technique [0002] Compared with the traditional round copper wire motor, the hairpin winding can increase the slot filling rate by 20% to 30%, and the power density and torque density of the motor are improved. The end of the hairpin winding motor is 5-10mm shorter than the end of the round copper wire motor, which effectively reduces the copper consumption of the end winding and further improves the efficiency of the motor. The hairpin winding has a larger contact area with the stator core in the stator slot and better heat dissipation. [0003] Nowadays, the common assembly method of hairpin winding motors is to first insert the prefabricated hairpin windings into the stator slots through automatic equipment, and then perform the process steps such as end twisting and welding. The cross-sectional area of ​​the flat copper w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/16H02K3/28H02K15/02
CPCH02K1/16H02K3/28H02K15/024Y02T10/64
Inventor 谢颖李厚宇何自豪范毅杰辛尉魏静微
Owner HARBIN UNIV OF SCI & TECH