Flexible thin film lithium ion battery and manufacturing method thereof

A lithium-ion battery, flexible film technology, applied in the manufacture of electrolyte batteries, battery electrodes, secondary batteries, etc., can solve the problems of inability to bend arbitrarily, poor thickness consistency, backward technology of intelligent products, etc., and achieve good flexibility and safety. High performance and good thickness consistency

Active Publication Date: 2014-07-16
江苏百特福新能源科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for ordinary domestic thin lithium-ion batteries, due to poor thickness consistency, the integrity of the battery cannot be guaranteed, and it cannot be bent arbitrarily. Product technology has always lagged behind the level of foreign western developed countries

Method used

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  • Flexible thin film lithium ion battery and manufacturing method thereof
  • Flexible thin film lithium ion battery and manufacturing method thereof
  • Flexible thin film lithium ion battery and manufacturing method thereof

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. The shape of the flexible thin-film lithium-ion battery of the present invention can be designed according to the specific needs of electronic components, and is not limited by this embodiment.

[0021] The structure of the thin film lithium battery given in this embodiment is as follows: figure 1 As shown, its battery core is composed of three layers. The positive electrode layer is composed of aluminum foil 5 and a single-sided half-layer positive electrode 4 composed of positive electrode materials. The negative electrode layer is composed of copper foil 2 and a single-sided half-layer positive electrode 1 composed of negative electrode materials. There is a separator between the positive electrode layer and the negative electrode layer. The outer surface of the copper foil and aluminum foil of the battery core is also packed with adhesive tape and pa...

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Abstract

The invention discloses a flexible thin-film lithium-ion battery and a manufacturing method thereof. The flexible thin-film lithium-ion battery is composed of a positive electrode layer, a diaphragm, a negative electrode layer and an outer packaging layer. The positive electrode material is printed on one side of aluminum foil, and the negative electrode layer is composed of copper foil with a thickness of 10-30μM and the negative electrode material printed on one side of the copper foil by gravure printing technology. The outer packaging layer is aluminum-plastic composite film. The positive electrode material of the battery includes the dispersant Hypermer KD-1, and the negative electrode material of the battery includes the conductive agent vapor phase growth carbon fiber. The flexible thin-film lithium-ion battery of the present invention has the beneficial effects of high safety, good thickness consistency, thickness control reduced to 0.25MM, good flexibility, no deformation after repeated bending, and no influence on battery performance.

Description

technical field [0001] The invention relates to the field of thin film lithium ion battery manufacturing, in particular to a flexible thin film lithium ion battery and a preparation method thereof. Background technique [0002] With the rapid development of modern information technology, human beings have put forward extremely high requirements for the safety and reliability of intelligent information technology, especially in the rise of emerging fields such as smart bank cards, RFID radio frequency technology, and thin-film drug medical treatment. A very stable and reliable micro power supply provides energy for smart devices, realizes scientific and technological applications, and provides safe and reliable services for human beings. [0003] However, for ordinary domestic thin lithium-ion batteries, due to poor thickness consistency, the integrity of the battery cannot be guaranteed, and it cannot be bent arbitrarily. Product technology has always lagged behind the leve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/058H01M4/62H01M10/0525
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 董相盛
Owner 江苏百特福新能源科技有限责任公司
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