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

Method for measuring liquid-absorbing rate and liquid-absorbing volume of lithium ion battery pole piece

A lithium-ion battery, liquid absorption rate technology, applied in the direction of using material absorption and weighing, can solve the problems of complex structure and complicated operation, and achieve the effect of simple structure and easy operation

Inactive Publication Date: 2018-11-27
GUANGDONG TEAMGIANT NEW ENERGY TECH CORP
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing test method for the liquid absorption rate of the pole piece of lithium battery is by utilizing the capillary action between the pole piece and the electrolyte. Compared with the measurement method of the present invention, the structure of this method is more complicated, and the operation is also more complicated.

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
  • Method for measuring liquid-absorbing rate and liquid-absorbing volume of lithium ion battery pole piece
  • Method for measuring liquid-absorbing rate and liquid-absorbing volume of lithium ion battery pole piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Place a ternary positive pole piece (length 102mm, width 84.5mm) horizontally on the table, draw a white line perpendicular to the height of the pole piece at a distance of 30mm and 60mm respectively. figure 1 As shown, drop a few drops of purple litmus test solution at 60mm of the white line (when the electrolyte spreads to 60mm, the white line will appear red), and weigh the pole piece weight M1 with an electronic balance. Put a certain amount of electrolyte in the beaker, and hang the pole piece vertically above the electrolyte through the iron stand; the end of the pole piece is flush with the electrolyte liquid surface, and the pole piece is immersed in the electrolyte 30mm (the scribe line is the same as the electrolyte (The liquid level is level), the pole piece starts to be immersed in the moment with a stopwatch. When the pole piece absorbs liquid until the white line appears red at the 60mm mark (the purple litmus test solution turns red when it meets the electro...

Embodiment 2

[0035] Place a ternary positive pole piece (length 102mm, width 84.5mm) horizontally on the desktop, and draw a white line perpendicular to the height of the pole piece at 30mm and 70mm from the tail end. figure 1 As shown, drop a few drops of purple litmus test solution on the white line 70mm (when the electrolyte spreads to 70mm, the white line will appear red), and weigh the pole piece weight M1 with an electronic balance. Weigh the pole piece weight M1 . Put a certain amount of electrolyte in the beaker, and hang the pole piece vertically above the electrolyte through the iron stand; the end of the pole piece is flush with the electrolyte liquid surface, and the pole piece is immersed in the electrolyte 30mm (the scribe line is the same as the electrolyte (The liquid level is level), the pole piece starts to be immersed in the moment with a stopwatch, when the pole piece absorbs liquid until the white line appears red at the 70mm mark (the purple litmus test solution turns r...

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 discloses a method for measuring liquid-absorbing rate and liquid-absorbing volume of a lithium ion battery pole piece. The method comprises the following steps: marking white lines on the positions h1 and h2 on a pole piece and dropping several drops of purple litmus test liquid onto the white lines, and meanwhile, weighting the pole piece; placing the pole piece into a certain amount of electrolyte; starting to keep timing at the moment of inserting the pole piece into the electrolyte, wherein one place marked with the white line on the pole piece is aligned with the liquid level of the electrolyte and the electrolyte rises along the pole piece; immediately stopping timing and taking out the pole piece when the white line becomes red (for the reason that the purple litmus test liquid becomes red while meeting the electrolyte) at the moment that the electrolyte reaches h2; weighting the pole piece, wherein the bigger the change on the weight of the pole piece is, the better the liquid-absorbing performance of the pole piece is.

Description

Technical field [0001] The invention relates to the technical field of new energy lithium batteries, in particular to a method for measuring the liquid absorption rate and liquid absorption of lithium ion battery pole pieces. Background technique [0002] The existing method for testing the liquid absorption speed of the pole piece of the lithium ion battery mainly uses the capillary action between the pole piece and the electrolyte, the electrolyte will rise along the pole piece, and then use a micrometer to measure the rise of the electrolyte on the pole piece per unit time Height, the higher the electrolyte rises along the pole piece in a unit time, the stronger the liquid absorption capacity of the pole piece. The function of the capillary is also used, but the difference is that a precise electronic scale is used to detect the weight of the electrolyte absorbed by the pole piece in a unit time, so as to obtain the liquid absorption performance of the pole piece, then the mor...

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): G01N5/02
CPCG01N5/02
Inventor 杨万光黄金兰王建彬
Owner GUANGDONG TEAMGIANT NEW ENERGY TECH CORP
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