Longitudinal ultrasonic welding device for power battery electrodes and working method of longitudinal ultrasonic welding device

Abstract

The invention discloses a longitudinal ultrasonic welding device for power battery electrodes and a working method of the longitudinal ultrasonic welding device. The Longitudinal ultrasonic welding device for the power battery electrodes comprises a driving device, an ultrasonic welding mechanism, a welding base, a base and a mounting plate mounted on the base vertically, wherein the driving device and the ultrasonic welding device are connected by means of matching to drive the ultrasonic welding device to move up and down, and the welding base fixedly mounted on the base is arranged below the ultrasonic welding mechanism. The ultrasonic welding mechanism is fixedly mounted on a movable component, and the driving device and the movable component are connected by means of matching to drive the movable component to move up and down. By the longitudinal ultrasonic welding device for the power battery electrodes and the working method of the longitudinal ultrasonic welding device, welding requirements for one to more than one hundred layers of single-welded or double-welded power battery pole pieces and tabs can be met.

Description

technical field [0001] The invention relates to an ultrasonic welding device, in particular to a power battery electrode ultrasonic longitudinal welding device and a working method thereof, which are used for welding single-layer or multi-layer electrodes of a power battery. Background technique [0002] Based on the current ultrasonic metal welding equipment in the welding of the tabs of the power battery and the single-layer or multi-layer pole pieces, the welding area is large and needs to be welded multiple times, which cannot meet the requirements of one-time single-point or multi-point large-area welding. Jog welding, the efficiency is low, and the subsequent welding will cause loosening of the previous welding point, which is likely to cause weak welding, that is, the phenomenon of virtual welding, which cannot realize the large-area single-layer or multi-layer electrode of the current power battery. Process requirements for quality welding. Special welding pressure ...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to change the existing ultrasonic metal welding equipment in the welding of the tabs of the power battery and the single-layer or multi-layer pole pieces. Large-area welding requirements, due to multiple welding, the subsequent welding will cause vibration loosening of the previous welding points, which will easily cause the welding effect to fail to meet the current large-area welding process requirements for single-layer or multi-layer electrodes of power batteries; The welding quality cannot be guaranteed, and the production requirements of product consistency cannot be achieved

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