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

Method for preventing corrosion inside soft packaging battery and electrode lug structure

A soft-pack battery and internal corrosion technology, which is applied in the direction of secondary batteries, structural parts, battery pack components, etc., can solve problems such as loss of water isolation, internal corrosion of soft-pack batteries, and aluminum layer rupture, so as to avoid electric shocks. Chemical reaction, effect of improving safety and service life

Inactive Publication Date: 2018-03-06
ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The electrolyte can penetrate into these cracks and make direct contact with the aluminum layer. Once the aluminum layer in the aluminum-plastic film and the negative electrode have an electronic circuit, the metal aluminum layer will undergo a lithium insertion reaction to form a highly brittle aluminum-lithium alloy, resulting in softness. The internal corrosion of the battery pack will eventually cause the aluminum layer to break and lose its ability to isolate moisture

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 preventing corrosion inside soft packaging battery and electrode lug structure
  • Method for preventing corrosion inside soft packaging battery and electrode lug structure
  • Method for preventing corrosion inside soft packaging battery and electrode lug structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as figure 1 In the shown embodiment, a tab structure for preventing internal corrosion of a pouch battery includes a positive tab 1 and an aluminum-plastic film, the positive tab is rectangular, and a conductive adhesive layer 2 is provided on the surface of the positive tab near the bottom, the conductive adhesive layer Arranged along the width direction of the positive tab, the length of the conductive adhesive layer is greater than or equal to the width of the positive tab. The aluminum-plastic film includes an aluminum layer and a nylon layer on the outer surface of the aluminum layer. The conductive adhesive layer includes a basic material layer and a partial conductive adhesive layer, and the basic material layer is one or more combinations of single-layer PP, single-layer PE, multi-layer PP, and multi-layer PE. The partial conductive adhesive layer is a combination of one or more of conductive metal material powder or fiber, conductive graphite, conductive ...

Embodiment 2

[0032] Such as figure 2 In the shown embodiment, a tab structure for preventing internal corrosion of a pouch battery includes a positive tab 1 and an aluminum-plastic film, the positive tab is rectangular, and a conductive adhesive layer 2 is provided on the surface of the positive tab near the bottom, the conductive adhesive layer Arranged along the width direction of the positive tab, the length of the conductive adhesive layer is greater than or equal to the width of the positive tab. The aluminum-plastic film includes an aluminum layer and a nylon layer located on the outer surface of the aluminum layer, and the surface of the conductive adhesive layer is bonded to the aluminum layer of the aluminum-plastic film.

[0033] The conductive adhesive layer includes a basic material layer 2a and a partial conductive adhesive layer 2b, and the basic material layer is one or more combinations of single-layer PP, single-layer PE, multi-layer PP, and multi-layer PE. The partial c...

Embodiment 3

[0036] Such as image 3 In the shown embodiment, a tab structure for preventing internal corrosion of a pouch battery includes a positive tab 1 and an aluminum-plastic film, the positive tab is rectangular, and a conductive adhesive layer 2 is provided on the surface of the positive tab near the bottom, the conductive adhesive layer Arranged along the width direction of the positive tab, the length of the conductive adhesive layer is greater than or equal to the width of the positive tab. The aluminum-plastic film includes an aluminum layer and a nylon layer located on the outer surface of the aluminum layer, and the surface of the conductive adhesive layer is bonded to the aluminum layer of the aluminum-plastic film.

[0037] The conductive adhesive layer includes a basic material layer 2a and two conductive components 2c, and the basic material layer is one or more combinations of single-layer PP, single-layer PE, multi-layer PP, and multi-layer PE. The conductive component...

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
Resistanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preventing corrosion inside a soft packaging battery and an electrode lug structure. The method comprises the following steps: a, coating a positive electrode lugof a soft packaging battery with a conductive adhesive layer, and enabling the conductive adhesive layer to contact an aluminum layer of a soft packaging battery aluminum-plastic film; b, coating a negative electrode lug of the soft packaging battery with an insulating adhesive layer, wherein the negative electrode lug is in insulating isolation from the aluminum-plastic film of the soft packagingbattery. The electrode lug structure comprises the positive electrode lug and the aluminum-plastic film, wherein the conductive adhesive layer is arranged onto the surface, close to the bottom, of the positive electrode lug; the length of the conductive adhesive layer is greater than the width of the positive electrode lug; the aluminum-plastic film comprises an aluminum layer and a nylon layer on the outer surface of the aluminum layer; the surface of the conductive adhesive layer is adhered to the aluminum layer of the aluminum-plastic film.

Description

technical field [0001] The invention belongs to the field of soft-pack batteries, and in particular relates to a method for preventing internal corrosion of soft-pack batteries and a tab structure. Background technique [0002] Soft-pack lithium-ion batteries have been widely used in the field of consumer electronics and electric vehicles due to their high specific energy, good safety, and flexible design. For example, the Chinese patent announcement number: CN102856580A discloses a lithium iron phosphate soft pack battery and its preparation method, which is to mix lithium iron phosphate material with conductive agent, binder, etc. to form positive electrode slurry; graphite and conductive agent, Binder and the like are mixed to form negative electrode slurry. Then apply the positive electrode slurry on the aluminum foil to make the positive electrode sheet, and apply the negative electrode slurry on the copper foil to make the negative electrode sheet. Then add the posit...

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): H01M2/32H01M2/26H01M10/0525H01M10/058H01M50/571H01M50/531
CPCH01M10/0525H01M10/058H01M50/531H01M50/571Y02E60/10Y02P70/50
Inventor 常林荣李洪涛任宁柯克刘新彪
Owner ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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