A kind of disc-type aluminum-nickel lug encapsulation method

Abstract

The invention discloses a disc-type aluminum-to-nickel lug coating method, which relates to the technical field of lithium battery lug production. The invention comprises the following steps: Step 1: Clean the aluminum-to-nickel lug to be coated with a cleaning roller, and clean up the sundries attached to the surface of the weld between the aluminum strip and the nickel strip; Step 2: Use a grinding tool to clean the aluminum strip and the nickel strip. Grinding the surface of the welded part of the nickel strip to make it rough; Step 3: Clean the polished aluminum-to-nickel lug through the cleaning roller again to remove the residue after grinding on the surface of the welded part of the aluminum strip and the nickel strip. In the present invention, the aluminum-to-nickel lug is coated once, twice, and three times, and the two kinds of lugs are matched together, so that the encapsulation performance of the aluminum-to-nickel lug is better, and the lug is improved. Excellent airtightness, by roughening the surface of the material before heat sealing, the microscopic pits on the surface of the material greatly enhance the bonding force between the tape and the metal tape and between the tape and the tape, making the compatibility between layers Better resistance, not easy to fall off.

Description

technical field [0001] The invention belongs to the technical field of making tabs of lithium batteries, and in particular relates to a disc-type aluminum-to-nickel tab tab coating method. Background technique [0002] Tabs are a raw material for lithium-ion polymer battery products. For example, mobile phone batteries, Bluetooth batteries, and notebook batteries used in our daily life all need tabs. Batteries are divided into positive and negative poles. The metal conductor that leads the positive and negative poles out of the core. Generally speaking, the ears of the positive and negative poles of the battery are the contact points when charging and discharging. The material of the positive ear of the soft-packed polymer lithium-ion battery is usually pure aluminum. During processing and assembly, it is necessary to connect the positive and negative electrodes of the battery to other electronic components by means of welding. However, the positive tab made of pure aluminum...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a disc-type aluminum-to-nickel lug encapsulation method, by performing one-time encapsulation, second encapsulation and three-time encapsulation on the aluminum-to-nickel lug, and using two kinds of lug glue to cooperate, This makes the aluminum-to-nickel lug's encapsulation performance better, and improves the sealing performance of the aluminum-to-nickel tab. By roughening the surface of the material before heat sealing, the microscopic pits on the surface of the material greatly strengthen the bond between the tape and the metal. The bonding force between the tapes and between the tapes makes the compatibility between the layers better, and it is not easy to fall off, which solves the problem that the existing aluminum-to-nickel area is of poor quality, easy to fall off, and poor sealing. ideal question