Assembling method of button-type lithium ion battery

A technology of lithium ion battery and assembly method, applied in secondary battery manufacturing, non-aqueous electrolyte storage battery, electrolyte storage battery manufacturing and other directions, can solve problems such as failure to realize positive electrode sheet, achieve consistency improvement, increase enterprise efficiency, and improve product quality quality effect

Active Publication Date: 2014-03-05
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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  • Assembling method of button-type lithium ion battery
  • Assembling method of button-type lithium ion battery
  • Assembling 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 assembling method of a button-type lithium ion battery. The assembling method comprises the following steps of horizontally placing a button battery positive electrode battery shell on a copper plate of a resistance welding machine, placing a positive plate right in the center of the positive electrode battery shell, then adjusting the voltage of the resistance welding machine, welding a sharp part of a carbon rod onto the positive battery shell on the edge of the positive plate, enabling the positive plate to be firmly contacted with the positive electrode battery shell, and enabling the position of the positive plate not to be easily changed. An assembled battery has high qualification rate, the consistency of the battery performance can be obviously improved, the original basic electrochemical performance of the positive electrode material can be reflected, and the positive electrode material can be adequately utilized. By adopting the assembling method, the mass production can be integrally improved, the qualification rate of the button battery can be increased, the consumption of materials can be reduced, the battery performance can be improved, the production cost of enterprises can be effectively reduced, the product quality can be improved, and the corporate benefit can be increased.

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 microelectronic products, and is generally used in various electronic Backup power supply for products, 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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