A kind of assembly method of button type lithium ion battery

A technology of lithium-ion batteries and assembly methods, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, electrolyte batteries, etc., can solve the problems of failure to realize the positive plate, achieve improved consistency, improved battery performance, and reduced material consumption Reduced effect

Active Publication Date: 2016-04-13
HENAN FUSEN NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This machine is suitable for the automatic production line of button batteries, and can automatically carry out the insertion process of the positive electrode sheet in the production process, and the operation is efficient; although it realizes the assembly of the positive electrode sheet, it fails to achieve the purpose of assembling the positive electrode sheet in the center of the battery case , so there is a need for an assembly method that can perfectly prevent the positive plate from being in the center of the battery case and make it in good contact to improve the performance of the button lithium-ion battery

Method used

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  • A kind of assembly method of button type lithium ion battery
  • A kind of assembly method of button type lithium ion battery
  • A kind of assembly method of button type lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A method for assembling a button lithium ion battery, comprising the steps of:

[0015] a. Place the positive electrode sheet at the center of the positive electrode case, and then use a resistance welding machine to weld the edge of the positive electrode sheet to the positive electrode battery case with one welding point.

[0016] b. Put it into the glove box → put the welded positive electrode shell flat → add the diaphragm → add the electrolyte → add the negative electrode sheet → add foam nickel → add the negative electrode shell → seal it → put it in a bag → take out the glove box.

[0017] Check the pass rate, capacity and consistency by measuring the electrochemical performance of the battery separately. Complete the assembly of 8 batteries according to the method of this embodiment, and test the batteries, and record the gram capacity data of the batteries as follows:

[0018]

Embodiment 2

[0020] The steps of this embodiment are basically the same as those of Embodiment 1, except that the welding points in step a are two corresponding points.

[0021] Complete the assembly of 8 batteries according to the method of this embodiment, and test the batteries, and record the gram capacity data of the batteries as follows:

[0022]

Embodiment 3

[0024] The steps of this embodiment are basically the same as those of the previous two embodiments, except that the welding points in step a are three points evenly distributed.

[0025] Complete the assembly of 8 batteries according to the method of this embodiment, and test the batteries, and record the gram capacity data of the batteries as follows:

[0026]

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Abstract

The invention discloses an assembly method of a button-type lithium-ion battery. The positive electrode battery case of the button battery is placed flat on the copper plate of the resistance welding machine, the positive electrode sheet is placed in the center of the positive electrode battery case, and then the resistance welding machine is adjusted. Voltage, the tip of the carbon rod is welded to the positive battery case on the edge of the positive electrode sheet, so that the positive electrode sheet can be firmly in contact with the positive electrode battery case and the position is not easy to change, so that the assembled battery has a high pass rate, and the battery The consistency of performance has been significantly improved, reflecting the original basic electrochemical performance of the positive electrode material, and can make full use of the positive electrode material; the present invention is a qualitative leap in mass production as a whole, which improves the pass rate of button batteries , Material consumption is reduced, battery performance is improved, which effectively reduces the production cost of the enterprise, improves the product quality, and increases the enterprise benefit.

Description

technical field [0001] The invention relates to an assembly method of a button-type lithium ion battery, in particular to an assembly method of a button-type lithium-ion battery. Background technique [0002] Button cell (button cell), also known as button cell, refers to a battery that looks like a small button. Because of its small size, it has been widely used in various miniature electronic products, and is generally used in various electronic products. backup power, such as computer motherboards, electronic watches, electronic dictionaries, electronic scales, memory cards, etc. However, in the current assembly process of button cells, often because the positive electrode cannot be fixed in the battery case, the positive electrode is not centered in the battery case or is not in good contact with the battery case, which leads to a poor pass rate of the button cell. Low, the performance of the positive electrode material used cannot be fully exerted, which seriously affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058
CPCH01M10/0427H01M10/058Y02E60/10Y02P70/50
Inventor 曹长城冯常义
Owner HENAN FUSEN NEW ENERGY TECH
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