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

Preparation device of lithium battery current collector

A technology for preparing devices and current collectors, applied in electrode manufacturing, battery electrodes, electrode carriers/current collectors, etc., can solve problems such as poor quality of lithium battery current collectors, achieve a balance between hardness and toughness, reduce processing difficulty, and reduce thickness Effect

Active Publication Date: 2020-04-10
BEIJING NORMAL UNIVERSITY
View PDF14 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a lithium battery current collector preparation device for solving the problem of poor quality lithium battery current collectors prepared in the prior art

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
  • Preparation device of lithium battery current collector
  • Preparation device of lithium battery current collector
  • Preparation device of lithium battery current collector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] The purpose of the present invention is to provide a device for preparing ultra-thin copper current collectors, especially for the preparation of copper current collectors below 6 microns, and to solve the problem of self-supporting in the case of realizing the preparation of ultra-thin copper current collectors Problems of poor performance, low yield, low energy density, and low safety.

[0045] In order to make the above objects, feature...

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
Login to View More

Abstract

The invention relates to a preparation device of a lithium battery current collector, which is used for preparing a current collector on the surface of a polymer. The device comprises a first flange interface and a second flange interface which are formed in a vacuum chamber; anion source module is arranged on the first flange interface; a magnetic filtering module is arranged on the second flangeinterface; and each rotating shaft is arranged in the vacuum chamber, each rotating shaft is in the shape of a hollow circular column, each rotating shaft is in contact with a polymer, and each rotating shaft is used for conveying the polymer to pass through the vacuum chamber. According to the invention, the material processing difficulty in the preparation process of the current collector is greatly reduced, covering and depositing metal ions on the object is performed to realize the preparation of the current collector, the thickness of the prepared current collector is greatly reduced, the current collector below 6 microns is prepared, a copper foil does not need to be calendered, and the prepared current collector is balanced in hardness and toughness, so that the current collector is not easy to tear and damage, and the prepared current collector can be produced in batches, is high in yield and is not easy to damage during surface punching.

Description

technical field [0001] The invention relates to the field of lithium batteries, in particular to a preparation device for a current collector of a lithium battery. Background technique [0002] In the second half of the 20th century, the manufacture of printed circuit boards was almost the only use of electrolytic copper foil. With the development of battery technology, lithium batteries gradually emerged and became popular. At this time, electrolytic copper foil has a new application field, that is, electrolytic copper foil applied to lithium-ion batteries. As the negative electrode current collector of lithium-ion batteries, copper foil not only serves as the carrier of negative electrode active materials in the battery, but also acts as a collector and transporter of negative electrode electron flow. Therefore, copper foil current collectors have a great influence on the electrochemical performance of lithium-ion batteries. Impact. Early lithium-ion batteries mostly use...

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): H01M4/04H01M4/66
CPCH01M4/0402H01M4/667Y02E60/10
Inventor 廖斌欧阳晓平张旭罗军陈琳庞盼吴先映英敏菊
Owner BEIJING NORMAL UNIVERSITY
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