Current collector, current collector manufacturing method, electrode plate and lithium ion battery

A technology of electrode pole piece and manufacturing method, applied in the direction of electrode carrier/current collector, non-aqueous electrolyte storage battery, secondary battery, etc. The effect of thermal runaway

Active Publication Date: 2019-05-21
CONTEMPORARY AMPEREX TECH CO
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned technical scheme of setting an undercoat layer between the current collector and the active material layer only reduces the probability of internal

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
  • Current collector, current collector manufacturing method, electrode plate and lithium ion battery
  • Current collector, current collector manufacturing method, electrode plate and lithium ion battery
  • Current collector, current collector manufacturing method, electrode plate and lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0066] Example 1

[0067] Hard shell batteries, cathode pole piece figure 1 The current collector shown has a width of 80mm, the width of the first area, which is the oxidized area, is 35mm, and the surface resistance of the aluminum foil is 3Ω·cm 2 , The thickness of the primer layer is 6μm.

Example Embodiment

[0068] Example 2

[0069] On the basis of Example 1, the width of the first area, that is, the oxidized area on the aluminum foil surface, was adjusted from 35mm to 45mm, and the width of the two second areas, that is, the two non-oxidized areas were reduced by 5mm respectively. Other production specifications are the same as in Example 1.

Example Embodiment

[0070] Example 3

[0071] On the basis of Example 1, increase the oxidation degree of the first area on the surface of the aluminum foil, that is, the oxidation area, and change the surface resistance of the aluminum foil from 3Ω·cm 2 Increase to 10Ω·cm 2 . Other production specifications are the same as in Example 1.

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
Surface resistanceaaaaaaaaaa
Concentrationaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a current collector, a current collector manufacturing method, an electrode plate and a lithium ion battery. The current collector comprises a metal foil and a bottom coatinglayer, wherein the metal foil comprises two surfaces opposite to each other, at least one of the two surfaces is provided with an oxide region, the area of the oxide region accounts for 20-60% of thetotal area of the two surfaces, the surface resistance of the metal foil is (3-10) ohms/cm<2>, and the bottom coating layer is formed on the metal foil. With the current collector, the current collector manufacturing method, the electrode plate and the lithium ion battery, provided by the invention, the thermal runaway of a battery cell can be effectively and stably prevented, the safety of the lithium ion battery is improved, and meanwhile, the current collector is compatible with favorable electrical performance.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a current collector, a method for manufacturing the current collector, electrode pole pieces and a lithium ion battery. Background technique [0002] With the widespread application of lithium-ion batteries, their safety performance is one of the properties that consumers are very concerned about, and it is also a very difficult problem to solve. At present, the new technology adopted in the safety performance of lithium-ion batteries is to use undercoating to protect the current collector, and at the same time, it can increase the short-circuit resistance, reduce the short-circuit power, and suppress thermal runaway, thereby improving the safety performance of lithium-ion batteries. [0003] However, the above-mentioned technical scheme of setting an undercoat layer between the current collector and the active material layer only reduces the probability of internal...

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
IPC IPC(8): H01M4/13H01M4/139H01M4/66H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 林明翔龙熙桂张小细
Owner CONTEMPORARY AMPEREX TECH CO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap