Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-performance honeycomb-shaped lithium ion button battery

A button battery, honeycomb technology, applied in the field of high-performance honeycomb lithium-ion button battery, can solve the problems of volume change and rapid capacity fading, and achieve the effect of avoiding alignment difficulty and unevenness, improving cycle performance and high capacity

Inactive Publication Date: 2019-05-28
湖北锂诺新能源科技有限公司
View PDF6 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies and applications of high-performance active materials in lithium-ion button batteries. In addition, tin and silicon-based negative electrodes have huge volume changes and rapid capacity fading during charge and discharge.

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
  • High-performance honeycomb-shaped lithium ion button battery
  • High-performance honeycomb-shaped lithium ion button battery
  • High-performance honeycomb-shaped lithium ion button battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A honeycomb lithium-ion button battery arranged in a CR1220 rectangular array and its assembly:

[0048] A CR1220 honeycomb lithium-ion button battery arranged in a rectangular array, characterized in that the honeycomb holes of the positive electrode sheet and the corresponding negative electrode sheet bosses are arranged in a rectangular array, and the bosses of the negative electrode sheet are embedded in the honeycomb holes of the positive electrode sheet form a tight connection. The preparation and assembly steps of the described honeycomb lithium-ion button cell are as follows:

[0049] (1) Positive plate preparation:

[0050]The positive electrode sheet uses NCM523 ternary material as the active material, and the active material, conductive agent, binder and solvent are stirred at high speed to prepare a slurry. The positive electrode slurry is coated on the aluminum foil current collector, and the electrode sheet is baked and dried for honeycomb manufacturing. ...

Embodiment 2

[0065] A kind of honeycomb lithium-ion button battery arranged in a CR2032 annular array and its assembly:

[0066] A honeycomb lithium-ion button battery arranged in a CR2032 annular array is characterized in that the honeycomb holes of the positive electrode sheet and the corresponding negative electrode sheet bosses are arranged in a circular array, and the bosses of the negative electrode sheet are embedded in the honeycomb holes of the positive electrode sheet to form Tight connection. The preparation and assembly steps of the honeycomb lithium-ion button cell are as follows:

[0067] (1) Positive plate preparation:

[0068] The positive electrode sheet uses NCM622 ternary material as the active material, and the active material, conductive agent, binder and solvent are stirred at high speed to prepare a slurry. The positive electrode slurry is coated on the aluminum foil current collector, and the electrode sheet is baked and dried for honeycomb manufacturing. Hole and...

Embodiment 3

[0083] A honeycomb lithium-ion button battery arranged in a CR2016 rectangular array and its assembly:

[0084] A honeycomb lithium-ion button battery arranged in a CR2016 rectangular array, characterized in that the positive electrode sheet is a honeycomb porous structure, the honeycomb holes are arranged in a rectangular array, the negative electrode sheet is a micron-sized cylindrical monomer, and the negative electrode slurry is coated on the ceramic honeycomb In the mold, after drying, the mold is released to obtain a micron-sized cylindrical monomer. The outer layer of a single negative cylinder monomer is covered with a diaphragm, and the upper layer is stacked with foamed nickel gaskets, which are embedded in the honeycomb holes. The diameter is 80-90% of the honeycomb holes, and the height is 75-90% of the hole depth. The preparation and assembly steps of the honeycomb lithium-ion button cell are as follows:

[0085] (1) Positive plate preparation:

[0086] The posi...

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

No PUM Login to View More

Abstract

The invention relates to a high-performance honeycomb-shaped lithium ion button battery. The honeycomb-shaped lithium ion button battery consists of a positive electrode shell, a positive plate, an electrolyte, a separator, a negative plate, a foam nickel gasket and a negative electrode shell, wherein the positive plate has a honeycomb porous structure, honeycomb pores of the positive plate are filled with the negative plate, and the positive plate and the negative plate are in close contact through the separator; the active substance of the positive plate is a high-nickel ternary material, and the active substance of the negative plate is a nano silicon-carbon composite material. And the honeycomb-shaped lithium ion button battery is assembled according to the sequence of the positive electrode shell->the positive plate->the electrolyte->the separator->the electrolyte->the negative plate->foam nickel->the negative electrode shell. The lithium ion button battery provided by the invention has a honeycomb porous structure, so that the wettability of the electrolyte is remarkably improved, and the rate capability of the battery is improved; the porous structure can alleviate the charge-discharge volume expansion stress of the silicon-carbon negative electrode and obviously improve the cycle performance of the battery; in addition, honeycomb holes of the positive plate and the negative plate are matched to realize self-positioning, battery short circuit caused by dislocation of the positive plate, the negative plate and the separator in the battery assembling process is effectively avoided, and the button battery is simple in assembling process, good in consistency and high in production efficiency.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to a high-performance honeycomb lithium-ion button battery. Background technique [0002] Lithium-ion batteries can be divided into square batteries, cylindrical batteries, button batteries and other types according to different shapes. Button batteries are widely used in small portable devices such as electronic watches, electronic balances, and electric toys due to their thinness and tinyness. In recent years, with the multi-functional development of information technology and mobile communication equipment, terminal equipment has put forward higher requirements for battery capacity, service life and charging and discharging performance. Currently widely used button batteries are AgO batteries, Zn-Mn batteries, Li-MnO 2 Batteries, etc., have low battery capacity, low energy density, limited life and are not recyclable. Lithium-ion button batteries have...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/131H01M4/134H01M4/1391H01M4/1395H01M4/04H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 马卫孙伟兵张天赐华诚王聪
Owner 湖北锂诺新能源科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com