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Manufacture method of arc soft-package lithium ion battery

A technology of lithium-ion batteries and manufacturing methods, applied in the field of lithium-ion batteries, to achieve the effects of overcoming size and arc limitations, streamlining process routes, and simple operations

Active Publication Date: 2016-02-10
XIAN SAFTY ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method avoids the wrinkling or stretching deformation of the aluminum-plastic shell during the bending process, resulting in poor appearance of the product. Compared with the single pit or semi-finished direct pressing process, the present invention does not need to use a hot press for hot pressing and shaping, and the manufactured lithium Ion batteries can be well loaded into electrical appliances with irregular arcs, overcoming the current problems such as the limited size and arc of special-shaped pouch batteries

Method used

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  • Manufacture method of arc soft-package lithium ion battery
  • Manufacture method of arc soft-package lithium ion battery
  • Manufacture method of arc soft-package lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The shape of the arc-shaped soft-pack lithium-ion battery of this embodiment is as follows: image 3 As shown, the battery manufacturing method sequentially includes a cell preparation process, a cell packaging process, a baking process, a liquid injection process, a chemical formation process, and an air extraction process;

[0037] The cell preparation process specifically includes: separating the positive electrode sheet welded with the positive electrode tab and the negative electrode sheet welded with the negative electrode tab with a diaphragm, winding with the winding needle as the center, and the axis of rotation of the winding needle during the winding process The direction is consistent with the axial direction of the bending arc of the electric core to be prepared. After the winding is completed, the winding needle is drawn out to obtain the electric core; the length direction of the positive electrode tab is consistent with the length direction of the positiv...

Embodiment 2

[0043] This embodiment is the same as Embodiment 1, except that the arc of the first arc segment 4 is 15°, and the radius of the arc is 60mm.

Embodiment 3

[0045] This embodiment is the same as Embodiment 1, except that the arc of the first arc segment 4 is 170°, and the radius of the arc is 35mm.

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Abstract

The invention discloses a manufacture method of an arc soft-package lithium ion battery. In a preparation step of a cell, a positive plate with a positive tag and a negative plate with a negative tag are separated by virtue of a diaphragm, the diaphragm is wound surrounding a winding needle, during the winding process, the rotation axial direction of the winding needle is consistent with the axial direction of bending radian of the cell to be prepared, and after the winding is completed, the winding needle is withdrawn; a cell packaging step specifically comprises the following steps: I, preparing an aluminum-plastic shell, wherein the aluminum-plastic shell comprises a left shell and a right shell connected to the left shell, the right shell is provided with a first arc section, and the left shell is provided with a second arc section; II, placing the cell into the first arc section of the right shell, folding the aluminum-plastic shell, and enabling the second arc section to cover the cell; and then hot sealing the folded aluminum-plastic shell. The manufacture process is simple to operate, low in cost, easy to realize, capable of greatly improving the production efficiency and rate of finished products and suitable for preparing various arc soft-package lithium ion batteries in complex shapes.

Description

technical field [0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to a method for manufacturing an arc-shaped flexible package lithium ion battery. Background technique [0002] With the development of society, lithium-ion batteries are widely used in various electronic products, such as mobile phones, computers, cameras and other digital products, due to their high energy density, environmental protection and other advantages. Due to the diversification of electrical appliances, consumers have more and more requirements for batteries and battery appearance design. Traditional cylindrical, square and other soft-packaged lithium-ion batteries have been difficult to meet market demand. In recent years, some special-shaped soft-packaged lithium-ion batteries have gradually emerged. Among them, arc-shaped soft-packaged lithium-ion batteries are a typical representative, which are mainly used in ring appliances. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0587
CPCH01M10/0587Y02E60/10Y02P70/50
Inventor 李峰王书会田菲杨洪何显峰
Owner XIAN SAFTY ENERGY TECH
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