Ultrasonic horn structure and ultrasonic welding device provided with same

By dividing the ultrasonic welding head structure into central, transition, and edge regions and setting a differentiated welding tooth distribution, the problem of restricted molten metal flow in traditional welding head structures is solved, thereby improving welding strength and effect and increasing battery yield.

CN224475703UActive Publication Date: 2026-07-10SVOLT ENERGY TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SVOLT ENERGY TECHNOLOGY CO LTD
Filing Date
2025-08-05
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Traditional ultrasonic welding head structures have smooth planes or unidirectional grooves on their tooth surfaces, which restricts the flow of molten metal, easily leading to stress concentration and welding cracks, thus reducing battery yield.

Method used

An ultrasonic welding head structure is designed, which divides the tooth surface into a central welding tooth region, a transition welding tooth region, and an edge welding tooth region, and sets different welding tooth center spacing and height to form a differentiated distribution of the welding tooth region, thereby optimizing energy distribution and metal flow.

Benefits of technology

It improves welding strength and welding effect, reduces stress concentration and local overheating defects, and improves battery yield and the quality of welding equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of ultrasonic welding technology and provides an ultrasonic welding head structure and an ultrasonic welding device equipped with the same. The ultrasonic welding head structure of this application includes a welding head body and a central welding tooth region, a transition welding tooth region, and an edge welding tooth region disposed on the tooth surface of the welding head body. Along the arrangement direction of the welding tooth regions, the central welding tooth region is located in the middle, the edge welding tooth regions are located on both sides of the central welding tooth region, and the transition welding tooth region is located between the central welding tooth region and the edge welding tooth region. The central welding tooth region has a plurality of protruding first welding teeth, the transition welding tooth region has a plurality of protruding second welding teeth, and the edge welding tooth region has a plurality of protruding third welding teeth. The center distance S1 between two adjacent first welding teeth, the center distance S2 between two adjacent second welding teeth, and the center distance S3 between two adjacent third welding teeth satisfy the following condition: S1 < S2 < S3. The ultrasonic welding head structure of this application is beneficial to improving the performance quality of ultrasonic welding devices.
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