Lithium ion cylinder battery welding clamp and use method thereof

Abstract

The invention provides a lithium ion cylinder battery welding clamp and a use method thereof. The welding clamp comprises a cap clamp and battery core clamps, wherein the cap clamp is used for containing battery caps and is provided with four saddles in a circular manner thereon, each two adjacent saddles are arranged at 90 degrees, and the cap clamp can rotate; and the four counterbores are arranged on the battery core clamps, each two adjacent counterbores are arranged at 90 degrees, each counterbore is used for containing the battery cores after being injected with liquid, wherein all tagson the same battery and corresponding cap tags thereof are overlapped on the saddles of the cap clamp and welded together through an ultrasonic welding machine, and the battery core clamps can rotate. The invention solves the industrial difficult problem that the cap tags and the battery tags of the lithium ion cylinder battery can not be welded after liquid injection by using the ultrasonic welding machine; and simultaneously, a method of four-station 360 degree rotating welding is used so as to greatly improve welding rate and the method is more economical and safer than a conventional laser welding method.

Description

technical field [0001] The invention relates to a welding jig, in particular to a welding jig for a lithium-ion cylindrical battery and a use method thereof. Background technique [0002] Lithium-ion batteries use carbon materials as the negative electrode and lithium-containing compounds as the positive electrode. There is no metallic lithium, only lithium ions. This is the lithium-ion battery. Lithium-ion battery refers to the general term for batteries with lithium-ion intercalation compounds as positive electrode materials. The charging and discharging process of lithium-ion batteries is the intercalation and deintercalation process of lithium ions. During the intercalation and deintercalation process of lithium ions, it is accompanied by the intercalation and deintercalation of electrons equivalent to lithium ions (the positive electrode is customarily represented by intercalation or deintercalation, while the negative electrode is represented by insertion or deinterca...

AI Technical Summary

Problems solved by technology

[0015] The main purpose of the present invention is to provide a lithium-ion cylindrical battery welding fixture and its use method to effectively solve the industry problem that the ultrasonic welding machine cannot weld the cap tab and battery tab of the lithium-ion cylindrical battery after liquid injection. The effective positioning of the battery core after liquid injection prevents the battery core from tilting, ensures that the battery electrolyte will not leak during the ultrasonic welding of the tabs, and avoids corrosion of the equipment

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