Inspection method of aluminum-plastic composite film forming mold for polymer lithium-ion battery

Abstract

The invention discloses an inspection method for forming molds for aluminum-plastic composite films of polymer lithium-ion batteries, which belongs to the manufacturing technology of polymer lithium-ion batteries. The prior art inspection molds have misjudgments. The invention simulates the actual production of lithium batteries and processes them into batteries for reprocessing. The inspection includes the following steps: (1) Forming the battery casing; (2) Making the finished battery; (3) Numbering each position of the finished battery; (4) High temperature and high humidity inspection; (5) Judging. The method conforms to the actual process of product use, is simple and effective in operation, can judge the failure point of the mold in real time and conveniently, can fully ensure the stability of battery mass production, and has more practical value in the production process.

Description

technical field [0001] The invention belongs to the manufacturing technology of polymer lithium ion batteries, in particular to an inspection method for forming molds of aluminum-plastic composite films of polymer lithium ion batteries. Background technique [0002] According to the different electrolyte materials used in lithium-ion batteries, lithium-ion batteries are divided into liquid lithium-ion batteries (Liquified Lithium-Ion Battery, referred to as LIB) and polymer lithium-ion batteries (Polymer Lithium-Ion Battery, referred to as PLB) or plastic lithium-ion batteries. Ion batteries (Plastic Lithium Ion Batteries, referred to as PLB). [0003] The positive and negative electrode materials used in polymer lithium-ion batteries are the same as liquid lithium ions. The positive electrode materials are divided into lithium cobaltate, lithium manganese oxide, ternary materials and lithium iron phosphate materials. The negative electrode is graphite, and the working princ...

AI Technical Summary

Problems solved by technology

The disadvantage is that after the aluminum-plastic composite film is stretched, because the corner is relatively thin, there will be misjudgment when the fillet radius (R value) at the corner of the mold is unreasonably set.

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