Assembling method for lithium-ion button type battery

Abstract

The invention relates to the technical field of lithium-ion batteries, in particular to an assembling method for a lithium-ion button type battery. The assembling method for the lithium-ion button type battery comprises the following steps: clamping a diaphragm by using tweezers, slightly placing the diaphragm on a negative pole shell, and wetting a large diaphragm part and a small diaphragm partof a metal lithium piece by using electrolyte; adding a droplet of electrolyte on the diaphragm dropwise; clamping a pole piece by using the tweezers, and slightly placing the pole piece on the electrolyte on the diaphragm; clamping a gasket by using the tweezers, and slightly placing the gasket on the pole piece; clamping one side of a positive pole shell by using the tweezers, and slightly covering the negative pole shell with the positive pole shell; slightly pressing the positive pole shell by using the tweezers; clamping an assembled battery by using the tweezers, and placing the assembled battery in an electric sealing machine for sealing. According to the battery which is assembled by adopting the method provided by the invention, the lithium piece and the gasket of the negative pole shell cannot be in contact with the positive pole shell by only placing one gasket on each side of the positive pole shell and the negative pole shell without foam nickel and a spring piece, so thata short circuit in the battery is avoided; the battery assembling time is shortened; the assembling of a button type button can be completed quickly and efficiently; the accuracy and the consistencyof the button type battery are greatly improved; the assembling method for the lithium-ion button type battery is suitable for laboratory evaluation, and is very suitable for evaluating material performance by an electrochemical method.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to an assembly method of lithium ion button batteries. Background technique [0002] Lithium-ion button batteries are widely used as the main evaluation method for positive and negative electrode materials of lithium-ion batteries due to their low cost, small size, short test cycle, and simple and convenient assembly. The button battery shell models commonly used by major material companies, research institutes and colleges are CR2016, CR2025, CR2032, and CR2430. The assembly sequence of conventional lithium-ion button batteries is positive shell, electrolyte, pole piece, electrolytic Liquid, diaphragm, electrolyte, lithium sheet, nickel foam, spring sheet, negative electrode case. The operation process is cumbersome and difficult, especially when the lithium sheet, nickel foam, and spring sheet touch the positive electrode case, they will cause a short circuit. The u...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a lithium-ion button battery assembly method, which is used to solve the problems of cumbersome procedures, time-consuming and low pass rate, which affect the accuracy and consistency of the lithium-ion button battery test; The present invention is achieved through the following technical solutions:

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