Bulge-prevention type buckle type lithium pyrite battery and manufacturing method thereof

An anti-expansion technology for iron disulfide batteries, applied in battery electrodes, battery pack components, non-aqueous electrolyte batteries, etc., can solve the problems of battery expansion and affecting battery performance, and achieve enhanced stability, overall quality, and The effect of expanding the range of application

Active Publication Date: 2008-11-05
SHANDONG GOLDENCELL ELECTRONICS TECH
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the previous lithium iron disulfide button battery had a positive electrode expansion problem dur...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bulge-prevention type buckle type lithium pyrite battery and manufacturing method thereof
  • Bulge-prevention type buckle type lithium pyrite battery and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 50g of iron disulfide powder and 50g of graphite powder evenly, then add 100g of polytetrafluoroethylene emulsion with a mass concentration of 5%, stir it with a glass rod to form a paste, press it into a sheet with a thickness of 1mm with a tablet machine, and press the tablet Put the body into a vacuum oven with a temperature of 150°C and a pressure of 1kPa, dry for 12 hours, take out the sheet, cut it into a round cake with a diameter of φ2.2mm, and then put the round cake into a vacuum oven with a temperature of 150°C and a pressure of 1kPa. Dry in an oven for 12 hours, then transfer the round cake to a dry environment with a relative humidity of ≤1%, and use it as a positive electrode. Put the negative electrode material with a diameter of φ2.2mm and a thickness of 0.5mm lithium cake into half a stainless steel shell, place a glass fiber diaphragm on it, then put the positive electrode on the diaphragm, and put a 1mm thick diameter φ2 on the positive electrode ...

Embodiment 2

[0031] Mix 80g of artificial iron disulfide powder and 20g of graphite powder evenly, then add 10g of acrylate aqueous solution with a mass concentration of 15%, stir it with a glass rod to form a paste, press it into a sheet with a thickness of 1mm with a tablet machine, and press the sheet Put it in a vacuum oven with a temperature of 150°C and a pressure of 1kPa, dry for 12 hours, take out the sheet, cut it into a round cake with a diameter of φ6.2mm, and then put the round cake in a vacuum oven with a temperature of 150°C and a pressure of 1kPa , and dried for 12 hours, the round cake was transferred to a dry environment with a relative humidity of ≤1%, and it was used as a positive electrode. Put the negative electrode material (Li: 98%wt, Al: 2%wt) of the lithium-aluminum alloy cake with a diameter of φ6.2mm and a thickness of 1.8mm into half a stainless steel shell, put a polypropylene (PP) film on it, and then Put the positive electrode on the diaphragm, put a 1.1mm th...

Embodiment 3

[0033] Mix 70g of natural iron disulfide powder and 30g of copper powder evenly, then add 100g of carboxymethyl cellulose with a mass concentration of 2%, stir it with a glass rod to form a slurry, and spread the slurry on a 20cm×10cm×2mm foamed titanium smear repeatedly with a horn spoon, so that the slurry is fully filled into the gap of the foamed titanium with a porosity of 95%, and then put the foamed titanium into a vacuum oven with a temperature of 150°C and a pressure of 1kPa, and bake Dry for 12 hours, take out the foamed titanium, press the foamed titanium into a sheet with a thickness of 2mm with a tablet machine, cut the sheet into a round cake with a diameter of φ8.2mm, and then put the round cake into a vacuum oven at a temperature of 150°C , and dried for 12 hours, the round cake was transferred to a dry environment with a relative humidity of ≤1%, and it was used as a positive electrode. Put the negative electrode material (Li: 98%wt, Al: 2%wt) of a lithium-alu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

Provided is an anti-expansion type button li-fes 2 battery and the manufacture method, including an anode case and a cathode case, wherein an anode and a cathode are arranged in the case, and a film is arranged between the anode and the cathode. The case is filled with electrolyte; an elastic metal sheet is arranged between the anode and the opposite anode case. The film is polypropylene with the micropore, or polyethylene with the micropore. The anode material is composed of iron disulphide, conduction agent and adhesive; the cathode is composed of metallic lithium, lithium aluminum alloy or aluminum silicon alloy. The electrolyte is the solution in which lithium salt is dissolved in the ethylene carbonate. The elastic metal sheet is selected from one of foaming nickel, fiber nickel, foaming copper, foaming aluminum, stainless steel spring sheet, aluminium spring sheet and nickel spring sheet. The invention causes the active material fully to contact with the current collector, advances the utilance of the active material, refrains expansion of the anode in the cell discharging process, reduces the falling of the active material, reinforces the discharging ability of the large current of the cell, advances the discharging capacity of the cell, simplifies the production technology of the cell, which is suitable for the large-scale industrialization production.

Description

technical field [0001] The invention relates to a button-type lithium iron disulfide battery and a manufacturing method thereof, in particular to an anti-expansion type button-type lithium iron disulfide battery and a manufacturing method thereof. Background technique [0002] In recent years, with the development of electronic technology and the increasing emphasis on environmental protection in the world, higher requirements have been put forward for chemical power sources. At present, the mainstream button batteries in the market are divided into two series: one series is zinc-manganese button batteries, which have the advantages of low price and low capacity, large self-discharge, easy leakage, Poor performance; Another series is silver-zinc button battery. Although the capacity of this battery is more than 30% higher than that of zinc-manganese batteries, it is expensive because its positive electrode material is silver oxide. Moreover, silver-zinc button batteries and...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M6/14H01M2/00H01M2/16H01M4/02H01M4/06H01M4/66H01M4/58H01M4/62H01M4/38H01M6/16H01M50/00H01M50/409
Inventor 李青海郝德利
Owner SHANDONG GOLDENCELL ELECTRONICS TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap