Tab welding device

The tab welding device addresses unstable welding and short component life by using a heating tube and lifting unit to maintain optimal welding conditions, resulting in improved precision and extended service life of welding components.

CN222133772UActive Publication Date: 2024-12-10TIANJIN JUYUAN NEW ENERGY TECH CO LTD +1
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Patent Information

Application Number
CN202420091942.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-15
Publication Date
2024-12-10
Estimated Expiration
2034-01-15

AI Technical Summary

Technical Problem

Existing tab welding processes in lithium-ion battery production suffer from unstable welding and short service life of welding heads and seats, particularly during the ultrasonic welding of tabs to pole pieces in battery cell production.

Method used

A tab welding device with a heating tube at the welding seat, lifting unit, and vacuum cleaning system to maintain optimal welding temperature and separate the pole piece post-welding, enhancing the welding quality and extending the service life of the welding components.

Benefits of technology

The device achieves more precise welding with reduced weld thickness and significantly extends the service life of the welding head and seat, from 100,000 to 140,000 times and 20,000 to 40,000 times, respectively, while preventing adhesion and oxidation of the pole piece.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the field of battery manufacturing equipment, and particularly relates to a tab welding device which comprises a main body base, a welding heating base and a lifting unit, the welding heating base comprises a welding seat and a heating pipe arranged below the welding seat; the lifting unit comprises lifting passing rollers arranged on the two sides of the welding base and a lifting device connected with the lifting passing rollers. According to the technical scheme, the heating pipe is arranged at the bottom of the welding seat, so that the temperature of the welding seat can be increased to the required temperature, the welding of a tab and a pole piece is facilitated, the thickness of a welding spot can be reduced by more than 10 microns, meanwhile, the service life of the welding head is prolonged from 100,000 times to 14,000 times, and the service life of the welding seat is prolonged from 20,000 times to 40,000 times.
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