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Thin type lithium ion battery and preparing method

A lithium-ion battery and thin technology, which is applied in the manufacture of electrolyte batteries, secondary batteries, battery pack components, etc., can solve the problems of complex process routes and insufficient energy for super smart cards

Inactive Publication Date: 2008-06-25
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the positive and negative electrodes use MnO respectively 2 Therefore, the lithium battery prepared by Varta is disposable, and it cannot be recharged after discharge. The energy it can provide cannot fully meet the needs of super smart cards, and the process route adopted is slightly complicated.

Method used

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  • Thin type lithium ion battery and preparing method
  • Thin type lithium ion battery and preparing method
  • Thin type lithium ion battery and preparing method

Examples

Experimental program
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Embodiment 1

[0035] combined with figure 1 with 2 This embodiment will be described. Weigh 88% mesophase carbon microspheres, 5% acetylene black, and 7% polyvinylidene fluoride (pre-dissolved in methylpyrrolidone NMP), stir evenly to form a slurry, and coat it on a pre-cut copper foil (1 ) (basic size 50mm×68mm, thickness 15μm, corresponding position is reserved for negative electrode tabs), the coating solid content is about 12mg / cm 2 , heated and dried in vacuum to obtain the negative electrode (2), the two parts of the active material are midline symmetrical, and the basic size is 22mm×32mm (the specific position is as follows figure 1 shown), the thickness of the negative electrode after rolling is about 100 μm.

[0036] Coat a layer of lithium-ion battery sealant (10) with a width of 7mm on the edge of the copper foil, and then stick a layer of hot-melt polyimide film (6) with a width of 7mm after a little drying, at the center line of the copper foil Stick a layer of polyimide (9...

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Abstract

The invention provides a film type lithium ion cell and it's preparing method. The lithium ion cell comprises a cathode 3, an anode 2 and an electrolytic solution 4 which are in a mental foil casing 1. The mental foil is a closed casing and anode gathering body; it uses the closed catalyst layer and the hot meal macromole thin film to seal the mental foil casing; the cathode conducing end is connected with the mental foil casing; the anode conducing end is connected with the anode gathering body and compacting pressed on the macromole thin film.

Description

technical field [0001] The invention relates to a thin lithium ion battery with a metal foil as a casing and a preparation method. More specifically, a thin Li-ion battery with high energy density, long cycle life, and thickness less than 0.5 mm was fabricated, which can be used as a built-in power source for super smart cards. The invention belongs to the field of lithium ion batteries. Background technique [0002] Since Japan's Sony Corporation took the lead in developing and commercializing lithium-ion batteries in 1990, lithium-ion batteries, as a new generation of batteries, have achieved rapid development. Nowadays, lithium-ion batteries have been widely used in various electronic devices, and many equipment manufacturers also use lithium-ion batteries as standard power supply components. At the same time, with the continuous advancement of science and technology, and the update and development of electronic equipment and devices, more and higher requirements are pu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/40H01M2/02H01M2/06H01M2/08H01M10/38H01M10/0525H01M10/058H01M50/119H01M50/133H01M50/172H01M50/193
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 王可解晶莹冯毅高阳
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI