Busbar prefabricated components, busbars, motors and vehicles

By optimizing the terminal structure of the bus prefabricated components and increasing the contact area between the inner wall of the wiring slot and the stator conductors, the problems of high contact resistance and low pull-out force during welding of traditional bus prefabricated components were solved, thereby improving the reliability of the motor and reducing the cost.

CN115714500BActive Publication Date: 2026-06-30ANHUI WELLING AUTO PARTS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ANHUI WELLING AUTO PARTS CO LTD
Filing Date
2021-08-23
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

When welding the terminals of traditional busbar prefabricated components to the stator conductors, there are problems such as high contact resistance and low pull-out force, which affect the reliability and cost of the motor.

Method used

A new bus prefabricated component structure is designed. The inner wall of the terminal wiring groove is composed of a first section, a second section, and a third section. The first section is a plane, the second section is an inclined plane, and the third section is an arc surface. The shape of the wiring groove is optimized to increase the contact area with the stator conductors. A transition arc and chamfer are set at the connection between the terminal and the bus bar. The mold design is improved to meet the welding strength requirements.

Benefits of technology

This improved the welding strength between the busbar and the stator conductors, reduced contact resistance, enhanced the reliability and service life of the motor, and reduced material waste.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN115714500B_ABST
    Figure CN115714500B_ABST
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Abstract

This invention relates to a bus prefabricated component, a bus, a motor, and a vehicle. The bus prefabricated component includes multiple bus bars and terminals. The bus bars are arc-shaped or annular. The terminals are connected to the bus bars and extend radially along the bus bars. A wiring groove for accommodating wires is formed at the end of the terminals away from the bus bars. Along the groove opening to the bottom, the inner wall of the wiring groove sequentially includes a first section, a second section, and a third section. The first section is a flat surface located near the groove opening; the third section is an arc-shaped surface located at the bottom of the groove; the second section is located between the first and third sections and is a flat surface inclined from the first section towards the third section. The bus prefabricated component according to embodiments of the present invention has at least the following advantages: by optimizing the terminals of the bus prefabricated component, the contact area between the inner wall of the wiring groove and the wires meets the strength requirements for resistance welding, thereby improving welding strength and reducing contact resistance.
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