Lithium ion battery core cladding winding machine for laser film production

Abstract

The invention discloses a lithium ion battery core cladding winding machine for laser film production. The lithium ion battery core cladding winding machine mainly comprises a rack, a winding device, a positive pole piece feeding conveyor, a negative pole piece feeding conveyor, and upper membrane feeding conveyor and a lower membrane feeding conveyor, wherein the positive pole piece feeding conveyor comprises a positive pole piece laser cutting mechanism which is arranged on the conveying path of the positive pole piece feeding conveyor and is used for cutting positive pole lugs on a positive pole piece; and the negative pole piece feeding conveyor comprise a negative pole piece laser cutting mechanism which is arranged on the conveying path of the negative pole piece feeding conveyor and is used for cutting negative pole lugs on a negative pole piece. The winding machine adopts laser to cut the pole pieces to form guiding lugs, the burr is small, the edges of the pole pieces are free of duslting, the combined efficiency is higher than that of an existing single winding machine, the manufacturing technology is reduced, the reliability is improved, and simultaneously continuous and uninterrupted production can be realized.

Description

technical field [0001] The application relates to the field of lithium battery production equipment and production methods, in particular to a lithium-ion battery core winding machine for laser sheeting. Background technique [0002] The existing lithium-ion power battery core package manufacturing methods mainly include two methods for preparing the core package by a lamination process and a winding process for preparing the core package. There are two ways to prepare the core package by winding process. One is to weld the pole piece and the guide lug of the core package by ultrasonic welding. After brushing, CCD inspection, and baking, it is moved to the winding machine for winding. Core packs, lithium-ion battery packs prepared in this way have the problem of large internal resistance of the welding position and easy heating during high-current charging and discharging. When the welding is not strong or weak, it is more likely to cause the battery to heat up or catch fire...

AI Technical Summary

Problems solved by technology

There are two ways to prepare the core package by winding process. One is to weld the pole piece and the guide lug of the core package by ultrasonic welding. After brushing, CCD inspection, and baking, it is moved to the winding machine for winding. Core packs, lithium-ion battery packs prepared in this way have the problem of large internal resistance of the welding position and easy heating during high-current charging and discharging. When the welding is not strong or weak, it is more likely to cause the battery to heat up or catch fire. The other is to use laser cutting pole piece material to form diversion lugs, after brushing powder, CCD inspection, baking, transfer to winding machine to wind into core package, this way diversion

Images