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

Battery positive sheet, manufacturing method of battery positive sheet, lithium ion battery, and manufacturing method of lithium ion battery

A battery positive electrode and battery negative electrode technology, which is applied in the direction of battery electrodes, electrode carriers/current collectors, secondary batteries, etc., can solve the problems of small capacity of lithium-ion batteries, and achieve the effects of reducing resistance, increasing capacity, and increasing dressing volume

Inactive Publication Date: 2019-03-08
SHENZHEN ZHUONENG NEW ENERGY TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The first object of the present invention is to provide a battery positive plate, which aims to solve the technical problem of low capacity of existing lithium-ion batteries

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
  • Battery positive sheet, manufacturing method of battery positive sheet, lithium ion battery, and manufacturing method of lithium ion battery
  • Battery positive sheet, manufacturing method of battery positive sheet, lithium ion battery, and manufacturing method of lithium ion battery
  • Battery positive sheet, manufacturing method of battery positive sheet, lithium ion battery, and manufacturing method of lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] The preparation of battery negative plate 3: mix 1.2%wt of suspending agent dry powder, 96.1%wt of graphite powder, 0.5%wt of negative electrode conductive agent, and 2.2%wt of negative electrode binder, then add deionized water and mix evenly to make a solid Negative electrode slurry with a content of 50% is gap-coated on a metal copper foil with a thickness of 8 μm, dried at a temperature of 100°C-130°C, rolled into a second sheet with a thickness of about 130 μm, and cut into strips shape, the width of the cut sheet is 96.0mm, and the negative electrode tab 31 is welded at the gap foil to make the negative electrode sheet 3 of the battery.

[0130] The preparation of positive electrode sheet 1 of the battery: 2.2% wt of positive electrode binder dry powder, 3.2% wt of positive electrode conductive agent (wherein, 1.2% wt of granular positive electrode conductive agent, 2.0% wt of fibrous positive electrode conductive agent), 94.6% of positive electrode active material...

Embodiment 2

[0134] The preparation of battery negative plate 3: mix 1.5%wt of suspending agent dry powder, 95.7%wt of graphite powder, 0.8%wt of negative electrode conductive agent, 2.0%wt of negative electrode binder, then add deionized water and mix evenly to make a solid The negative electrode slurry with a content of 50% is gap-coated on a metal copper foil with a thickness of 8 μm. After drying at a temperature of 100°C-130°C, it is rolled into a second electrode sheet with a thickness of about 128 μm and cut into strips shape, the width of the cut sheet is 96.0 mm, and the negative electrode tab 31 is welded at the gap foil to make the negative electrode sheet 3 of the battery.

[0135] The preparation of positive electrode sheet 1 of the battery: dry powder of positive electrode binder 2.4%wt, positive electrode conductive agent 2.5%wt (wherein, granular positive electrode conductive agent 0.9%wt, fibrous positive electrode conductive agent 1.6%wt), positive electrode active materia...

Embodiment 3

[0139] The preparation of battery negative plate 3: mix 1.7%wt of suspending agent dry powder, 95.3%wt of graphite powder, 1.0%wt of negative electrode conductive agent, and 2.0%wt of negative electrode binder, then add deionized water and mix evenly to make a solid The negative electrode slurry with a content of 50% is gap-coated on a metal copper foil with a thickness of 8 μm. After drying at a temperature of 100°C-130°C, it is rolled into a second sheet with a thickness of about 125 μm and cut into strips shape, the width of the sheet body cut out is 96 mm, and the negative electrode tab 31 is welded at the gap foil to make the negative electrode sheet 3 of the battery.

[0140] Preparation of battery positive sheet 1: 2.6%wt of positive electrode binder dry powder, 1.8%wt of positive electrode conductive agent (wherein, 0.6%wt of granular positive electrode conductive agent, 1.2%wt of fibrous positive electrode conductive agent), 95.6% of positive electrode active material ...

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
widthaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention is applicable to the field of batteries, and discloses a battery positive sheet, a manufacturing method of the battery positive sheet, a lithium ion battery, and a manufacturing method of the lithium ion battery, wherein the battery positive electrode sheet has a width of 94.5 mm + / - 5 mm, and comprises a positive metal substrate, a positive tab electrically connected to the positivemetal substrate, and a positive coating coated on the outside of the positive metal substrate; the positive coating comprises the following components by weight: a positive active material of 88.0% to 98.6%, positive conductive agents of 0.4% to 12.0%, and a positive binder of 1.0% to 6.0%; and the positive conductive agents comprise at least one of a particulate positive conductive agent and a fibrous positive conductive agent. The invention performs optimal design on the width of the battery positive sheet and the positive coating on the battery positive sheet to improve the capacity of thebattery positive sheet and reduce the resistance of the battery positive sheet, thereby facilitating the improvement of the capacity, circulation performance and safety performance of the lithium ionbattery.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery positive electrode sheet, a method for manufacturing the battery positive electrode sheet, a lithium ion battery with the battery positive electrode sheet, and a manufacturing method for the lithium ion battery. Background technique [0002] From the production of lithium-ion batteries to their application in electronic products, there is a core link in the middle-packaging (PACK). No matter what type of lithium-ion battery cells, they must be packaged into groups and passed the inspection before they can be finally used in electronic products. With the continuous development of the lithium-ion battery industry, 18650 lithium-ion batteries (battery diameter 18mm, height 65mm) have become the preferred model in the field of battery packaging due to their standardized size and flexible grouping methods. In the prior art, the width of the positive plate of the 18650-type lithium-...

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): H01M4/66H01M4/38H01M4/62H01M10/0525
CPCH01M4/38H01M4/621H01M4/624H01M4/625H01M4/667H01M10/0525Y02E60/10
Inventor 李亮黄国文欧瑞先韦丽娟
Owner SHENZHEN ZHUONENG NEW ENERGY TECH
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