Preparation method of lithium ion polymer battery suitable for reference electrode

Abstract

The invention relates to a preparation method of a lithium ion polymer battery suitable for a reference electrode. The method comprises the following steps: a battery electrode assembly consists of a positive plate, a negative plate, insulating diaphragms, a positive electrode ear and a negative electrode ear; the reference electrode consists of a lithium plate, a negative electrode ear and a small insulating diaphragm; the electrode assembly is a regular square, the positive and negative electrode ears are on one side or separately on both sides of the electrode assembly, the reference electrode is arranged between two diaphragms of the electrode assembly; and a core is used as the shaft and the fully automatic winding method is adopted to obtain the finished electrode assembly. In a dry condition, the lithium plate is rolled to be covered on the other negative electrode ear; and the lithium plate is fixed on the metal negative electrode ear through rolling, and the insulating diaphragm is covered on the lithium plate with an adhesive tape or adhesive which has adhesive action. By adopting the method, the diaphragm can be covered on the lithium plate, the direct contact of the lithium plate with the positive and negative electrodes can be avoided; and the electrochemical reaction of the positive electrode and negative electrode of the battery can be analyzed by using the reference electrode and the battery negative electrode/positive electrode (N/P) is verified and the battery is ensured to have good performance.

Description

technical field [0001] The invention relates to a manufacturing method of a battery, in particular to a manufacturing method suitable for a reference electrode polymer lithium ion battery. Background technique [0002] At present, with the continuous development of the lithium-ion battery industry, the performance requirements for batteries are getting higher and higher, and the capacity is getting larger and larger. Reducing N / P is undoubtedly a way to increase capacity, but excessively reducing N / P will easily lead to Lithium precipitation occurs during the battery cycle, leaving potential safety hazards. If a reference electrode battery is made, it can be verified whether the N / P ratio of the battery is appropriate to ensure the excellent performance of the battery. [0003] Therefore, it is one of the problems that those skilled in the art should start to solve to provide a manufacturing method suitable for the reference electrode polymer lithium ion battery with simple...

AI Technical Summary

Problems solved by technology

[0002]At present, with the continuous development of the lithium-ion battery industry, the performance requirements of the battery are getting higher and higher, and the capacity is getting bigger and bigger. Reducing N / P is undoubtedly a It is a method to increase the capacity, but if the N / P is too low, it will easily lead to lithium precipitation during the battery cycle, leaving a potential safety hazard