Equipment for cutting for achieving metal strip of battery and operation method of equipment

Abstract

The invention relates to equipment for cutting for achieving a metal strip of a battery. The equipment comprises a traction tool for continuously pushing one metal strip along a sliding channel, a cutting device for cutting the metal strip, a first sliding block located on the upstream of the cutting device and provided with a first movable roller, a second sliding block located on the downstreamof the cutting device and provided with a second movable roller, a moving tool mechanically connected to the first sliding block and the second sliding block and used for moving the first sliding block and the second sliding block along the sliding channel, a control unit operatively connected to the upper portion of the moving tool and configured to control the tools to periodically move the first sliding block and the second sliding block with the corresponding forward and reverse stroke so that the length of the sliding channel can be conveniently changed, the subsequent portions of the metal strip are periodically stopped at the position of the cutting device, and the advancement speed of the metal strip on the upstream and downstream of the cutting device is kept constant.

Description

technical field [0001] The invention relates to a device for cutting metal strips for realizing accumulators and a method of operating the device. [0002] The device and method are suitable for industrial sectors producing accumulators, especially lithium-ion batteries. [0003] The devices and methods involved are advantageously used for cutting a strip of metal forming a battery pole, in particular cutting the longitudinal edges of the strip, in order to obtain a shaped profile comprising, for example, a protruding flag designed to constitute an electrode terminal. Background technique [0004] Accumulators, especially lithium-ion batteries, comprise one or more positive and negative electrodes arranged alternately with each other in a dielectric material and separated by separator layers. [0005] The battery electrodes are usually realized by a metal strip which undergoes several machining processes, such as cutting and / or punching, in order to obtain a metal plate wit...

AI Technical Summary

Problems solved by technology

[0020] The device described in patent application WO2013 / 186745 has also proven in practice without inconvenience

[0021] However, a first disadvantage of this known type of equipment is that it is operationally inflexible, since in order to change the profile to be achieved on the metal strip (for example, to change the distance between raised flags), mechanical replacement or modification is required Rotating rolls, which lead to long interventions required to perform modifications, resulting in long interruptions in the production cycle

[0022] Another disadvantage is the risk of inaccurate cutting operations due to the rotating rollers of the tensioning tool requiring careful setting operations to adjust for variations in the speed of the metal strip relative to the cutting device

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