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

Manufacturing method of multi-tab pole piece and manufacturing method of battery cell

A manufacturing method and multi-pole ear technology, which are applied in electrode manufacturing, circuits, electrical components, etc., can solve the problems of reducing the performance of wound batteries, falling off of active materials of positive and negative plates, deformation of internal pole pieces, etc. Simple solution, reduced shedding, and reduced stress

Pending Publication Date: 2022-03-01
MICROVAST POWER SYST CO LTD
View PDF0 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of inward folding of the above-mentioned blank part, in order to smooth the tabs, it is usually necessary to apply a large pressure on the surface perpendicular to the pole piece (that is, the two cylindrical end faces of the cylindrical battery formed after winding), which is easy It causes the active materials on the internal positive and negative electrodes to fall off, and even causes the deformation of the internal electrodes, which greatly reduces the performance of the wound battery

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
  • Manufacturing method of multi-tab pole piece and manufacturing method of battery cell
  • Manufacturing method of multi-tab pole piece and manufacturing method of battery cell
  • Manufacturing method of multi-tab pole piece and manufacturing method of battery cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0052] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention are used to distinguish similar objects and not necessarily to describe specific sequence or sequence.

[0053] The up, down, left, right, front, back, top, bottom, etc. (if any) orientation words involved in the specification and claims of the present invention refer to the positions in the drawings of the structures in the drawings and the relationship between the structures. It is only defined for the clarity and convenience of expressing the technical solution. It should be understood that the use of location words should not limit the scope of pr...

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
angleaaaaaaaaaa
Login to View More

Abstract

The invention provides a manufacturing method of a multi-tab pole piece, and the manufacturing method of the multi-tab pole piece comprises the following steps: providing a pole piece which comprises an empty foil area; and cutting the empty foil area to form a plurality of tabs with quadrilateral structures so as to obtain the multi-tab pole piece. According to the invention, the empty foil area of the pole piece is cut to form the quadrilateral tabs, so that when the multi-tab pole piece is wound to form the battery cell, the rolling pressure required for flattening the tabs can be reduced, thereby avoiding the deformation of the multi-tab pole piece, reducing the falling of active materials on the positive and negative pole pieces, and greatly improving the yield of the wound battery cell. The invention also provides a manufacturing method of the battery cell.

Description

[0001] This application is a divisional application with application number 202110536556.2, application date of May 17, 2021, and invention name "full tab pole piece and winding battery". technical field [0002] The invention relates to the technical field of batteries, in particular to a method for manufacturing a multi-tab electrode sheet and a method for manufacturing an electric core. Background technique [0003] With the development of electronic technology, lithium-ion batteries have been widely used due to their advantages such as high specific power, long cycle life, good safety performance and no pollution. Traditional wound batteries are mainly single-tab or multi-tab wound batteries, and full-tab wound batteries are increasingly recognized due to their low internal resistance and high energy density. The manufacturing method of the all-tab winding battery is usually to coat one end of the positive and negative electrodes with active materials (the part coated wi...

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): H01M50/533H01M4/04H01M10/04
CPCH01M10/0431H01M50/533H01M4/04Y02P70/50Y02E60/10H01M50/538H01M10/0587H01M50/536H01M50/531
Inventor 邓国友慎晓杰靳勇臧庆凤魏相
Owner MICROVAST POWER SYST CO LTD
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