Unlock instant, AI-driven research and patent intelligence for your innovation.

Electrochemical devices and electronic devices

An electrochemical and conductive agent technology, applied in the field of electrochemical devices and electronic devices, can solve problems such as insufficient safety and reduced service life of electrochemical devices, and achieve the effect of improving edge expansion and structural stability

Active Publication Date: 2022-07-19
NINGDE AMPEREX TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides an electrochemical device and an electronic device, which can solve the problems of reduced service life and insufficient safety of the electrochemical device

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
  • Electrochemical devices and electronic devices
  • Electrochemical devices and electronic devices
  • Electrochemical devices and electronic devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] An electrochemical device is provided, wherein the main body region has a width of 300mm and a thickness of 0.12mm, the edge region has a width of 100mm and a thickness of 0.12mm, and the first film layer comprises 90wt% lithium titanate, 2wt% sodium carboxymethyl cellulose and 8wt% styrene-butadiene rubber, and the second film layer includes 90wt% natural graphite, 2wt% lithium carboxymethyl cellulose and 8wt% polyacrylic acid.

Embodiment 2

[0106] An electrochemical device is provided, wherein the main body region has a width of 300mm and a thickness of 0.12mm, the edge region has a width of 100mm and a thickness of 0.12mm, and the first film layer comprises 45wt% porous carbon, 45wt% artificial graphite, 2wt% carboxymethyl Sodium cellulose and 8wt% styrene-butadiene rubber, and the second film layer includes 90wt% natural graphite, 2wt% lithium carboxymethyl cellulose and 8wt% polyacrylic acid.

Embodiment 3

[0108] An electrochemical device is provided, wherein the main body region has a width of 300mm and a thickness of 0.12mm, the edge region has a width of 100mm and a thickness of 0.12mm, and the first film layer comprises 55wt% porous carbon, 35wt% artificial graphite, 2wt% carboxymethyl Sodium cellulose and 8wt% styrene-butadiene rubber, and the second film layer includes 90wt% natural graphite, 2wt% lithium carboxymethyl cellulose and 8wt% polyacrylic acid.

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
elastic modulusaaaaaaaaaa
elastic modulusaaaaaaaaaa
cohesionaaaaaaaaaa
Login to View More

Abstract

Embodiments of the present application provide an electrochemical device and an electronic device, wherein the electrochemical device includes: an electrode assembly, and the electrode assembly includes a positive pole piece, a negative pole piece and a separator, and the separator is arranged on the positive pole piece and the negative pole piece between. The negative pole piece includes a current collector and an active material layer disposed on at least one surface of the current collector, the active material layer includes a first film layer and a second film layer, and the current collector includes a main body area in its width direction and is disposed on the opposite two sides of the main body area. In the edge area of ​​the side, along the width direction of the current collector itself, the ratio of the width of the main body area to the width of the current collector is 0.5 to 0.9, the first film layer is arranged in the edge area, the second film layer is arranged in the main body area, and the first film layer is The hardness is greater than the hardness of the second film layer. By setting the Shore hardness of the first film layer to be greater than that of the second film layer, it is convenient for the electrode assembly to maintain the initial state for a long time, and the problem of edge expansion of the negative electrode pole piece is effectively improved.

Description

technical field [0001] The present application belongs to the technical field of battery equipment, and in particular, relates to an electrochemical device and an electronic device. Background technique [0002] With the depletion of natural resources and the destruction of the environment, there is a growing interest in various fields in devices that can store energy and utilize the stored energy efficiently. Batteries are systems that can be combined with each other to harness new, renewable energy. [0003] In the field of battery equipment technology, in order to adapt to more and more extensive use needs, the shape of the battery has also been adjusted adaptively. More and more special-shaped batteries are used, such as arc-shaped batteries that are easy to fit the human body. It can facilitate the adjustment of the mechanical structure of the electrical device. However, the setting of the special-shaped battery needs to adjust the internal electrode assembly accordin...

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 Patents(China)
IPC IPC(8): H01M4/131H01M4/133H01M4/36H01M4/485H01M4/587H01M4/60H01M4/62H01M10/0525
CPCH01M4/366H01M4/485H01M4/587H01M4/625H01M4/624H01M4/602H01M4/131H01M4/133H01M10/0525H01M2004/027H01M2004/021
Inventor 江兵李晨晨周丰张青文
Owner NINGDE AMPEREX TECH