Manufacturing method of soft button lithium battery and soft button lithium battery

A manufacturing method, the technology of the soft clasp button, is applied in the field of small batteries to achieve the effects of simple manufacturing process, cost reduction and strong consistency

Active Publication Date: 2020-02-11
松栢投资有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there is still the defect that it is difficult to produce a button-type lithium battery with high product quality, thinner thickness and smaller volume by using the soft package method

Method used

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  • Manufacturing method of soft button lithium battery and soft button lithium battery
  • Manufacturing method of soft button lithium battery and soft button lithium battery
  • Manufacturing method of soft button lithium battery and soft button lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] This embodiment provides a single manufacturing method of a soft-packed button-type lithium battery. The soft-packed button-type lithium battery includes a casing and a roll-wrapped battery cell arranged in the casing, wherein the casing is made of aluminum-plastic film after die-cutting. The formed soft shell has a positive pole piece and a negative pole piece drawn out from the roll-packed battery core, and protrudes from both sides of the shell respectively.

[0079] The manufacturing method of the soft pack button lithium battery is as follows:

[0080] Such as figure 1 As shown, an aluminum-plastic composite film with a thickness of 0.10 mm is selected as the lower layer of aluminum-plastic film 100, and the lower layer of aluminum-plastic film 100 is stamped to form a deep groove 101 that matches the shape of the packaged battery 300, and the lower layer of aluminum-plastic film The positioning part 102 is formed on the surface of 100 and at a certain distance fr...

Embodiment 2

[0093] The present invention provides a button lithium battery structure, which is manufactured using the manufacturing method provided in Example 1, such as Figure 7 As shown in -9, the button-type lithium battery includes a lower layer of aluminum-plastic film 100 , an upper layer of aluminum-plastic film 200 and a roll-wrapped battery cell 300 .

[0094] Among them, a deep groove is formed on the lower aluminum-plastic film 100, and a shallow groove is formed on the upper aluminum-plastic film 200, and the shape of the shallow groove matches the shape of the deep groove; the roll-packed battery 300 is placed in the deep groove and the shallow groove , and is wrapped by the lower layer of aluminum-plastic film 100 and the upper layer of aluminum-plastic film 200.

[0095] The packaged cell 300 includes a positive pole piece 301, a negative pole piece 302, and a separator 303; the separator 303 is located between the positive pole piece 301 and the negative pole piece 302, a...

Embodiment 3

[0100] Such as Figure 10 As shown, on the basis of Embodiment 1, the present invention provides a combined manufacturing method of a soft-pack button lithium battery, comprising the following steps:

[0101] Punching and forming four linearly spaced deep grooves 101 on the lower layer of aluminum-plastic film 100, and forming a positioning part 102 on the surface of the lower layer of aluminum-plastic film 100;

[0102] The upper aluminum-plastic film 200 is punched to form shallow grooves 201 corresponding to the four deep grooves 101, and the positioning matching part 202 is formed on the surface of the upper aluminum-plastic film 200;

[0103] Each deep groove 101 is loaded with rolled batteries for packaging, and the upper layer of aluminum-plastic film 200 is covered on the lower layer of aluminum-plastic film 100 through the positioning part 102 and the positioning matching part 202, and the two ends of the rolled batteries 300 are respectively placed in the correspond...

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Abstract

The invention provides a manufacturing method of a soft button lithium battery and the soft button lithium battery. The manufacturing method comprises the steps that a deep groove and a positioning part are formed by punching a lower aluminum plastic film; a shallow groove which matches the deep groove and a positioning matching part are formed by punching an upper aluminum plastic film; a roll-upbattery core is put into the deep groove for packaging; the upper aluminum plastic film covers the lower aluminum plastic film through the positioning part and the positioning matching part, and twoend faces of the roll-up battery core are placed in the deep and shallow grooves respectively; the positions of the positive and negative earpieces of the roll-up battery core and three or half circumferences of the upper aluminum plastic film and the lower aluminum plastic film are heat-sealed; after electrolyte injection, vacuumizing and forming are successively carried out, unsealed sides are heat-sealed; and a single cell is acquired through cutting and forming. The manufacturing method provided by the invention has the advantages of simple manufacturing process and high product quality. In addition, the manufactured button battery has the advantages of small volume and thin thickness.

Description

technical field [0001] The invention belongs to the technical field of small batteries, and in particular relates to a method for manufacturing a soft button lithium battery and the soft button lithium battery. Background technique [0002] Button batteries are divided into two categories: chemical batteries and physical batteries. Among them, chemical batteries are more commonly used. Chemical batteries are generally composed of an anode (positive electrode), a cathode (negative electrode) and its electrolyte. The shell of the battery is made of stainless steel sheet, which is used as the positive electrode, and the negative electrode is made of a stainless steel circular cover. There is a sealing ring for insulation between the positive electrode and the negative electrode. The sealing ring is not only used for insulation, but also used to prevent electrolyte leakage. Because its packaging adopts the packaging method of physical blockage and hard shell, the packaging effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/0587H01M2/02
CPCH01M10/0427H01M10/0587H01M50/109Y02E60/10Y02P70/50
Inventor 叶敏华叶嘉慧
Owner 松栢投资有限公司
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