Full-automatic hot-pressing method of novel polymer lithium ion battery

Abstract

The invention discloses a full-automatic hot-pressing method of a novel polymer lithium ion battery, which is characterized in that a full-automatic hot press is used in a hot press procedure, the full-automatic hot press adopts a plurality of parallel heating plates to carry out hot press on the battery vertically placed into the heating plates, one battery is placed between the adjacent hot pressing plates, parallel guide columns are arranged on and under the hot press plates, and the hot press plates are pushed to extrude through a lateral air cylinder so as to apply heat energy and pressure to the batteries. The invention increases hot-press stress consistency and thickness consistency in the manufacturing process of the lithium ion battery so as to improve the safe quality of the lithium ion battery.

Description

technical field [0001] The invention relates to the technical field of battery manufacturing, in particular to a novel full-automatic hot-pressing method for a polymer lithium-ion battery. Background technique [0002] Lithium-ion polymer batteries have the advantages of high voltage, high specific energy, many cycle times, long storage time, and smaller size. They are used in portable electronic devices such as mobile phones, Bluetooth headsets, MP3, MP4, MP5, digital cameras and portable Computers and the like have been widely used. In the production process of lithium-ion polymer batteries, hot pressing is a very critical operation process. The effect of hot pressing polymerization directly affects the final thickness of the battery, and the position of the production process where the hot pressing is located directly affects the final safety performance of the battery. Shell resistance (the resistance between the negative electrode and the battery shell) is an important...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: 1. A large number of batteries are hot-pressed at one time, and the parallelism of the upper and lower hot-pressing plates cannot be accurately guaranteed, so the thickness of the hot-pressed batteries has a large difference. Small and thick batteries are prone to lithium precipitation due to the poor bonding of the positive and negative electrodes when used, and the polymerization effect cannot be well guaranteed, and the thickness rebound is serious; 2. There is no air pocket when the battery is hot-pressed, and the battery is squeezed When there is no buffer space, the relatively fragile part of the package is easy to be squeezed and stretched, resulting in damage to the shell and corrosion of the shell. The detection phenomenon is that the resistance of the battery shell is small