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

Method of welding electrode tabs and cable-type rechargeable battery including electrodes manufactured according to the method

A technology for welding electrodes and electrode sheets, which is applied in the fields of electrode manufacturing, secondary battery manufacturing, and electrolyte storage battery manufacturing. Process simplification, the effect of process simplification

Active Publication Date: 2022-06-17
LG ENERGY SOLUTION LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the process of welding electrodes, there is a problem of deterioration of welding quality due to pollution caused by the electrode active material layer and insulating layer. Therefore, in order to solve the problem of electrode contamination, welding needs to be performed after completely removing the electrode active material layer and insulating layer. conduct
[0006] However, the removal of the insulating layer according to the above method causes a problem in that flexibility and durability deteriorate, making the electrode unusable for a cable type 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
  • Method of welding electrode tabs and cable-type rechargeable battery including electrodes manufactured according to the method
  • Method of welding electrode tabs and cable-type rechargeable battery including electrodes manufactured according to the method
  • Method of welding electrode tabs and cable-type rechargeable battery including electrodes manufactured according to the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0040] According to an exemplary embodiment of the present invention, the adhesive may include polyvinylidene fluoride (PVDF), polyvinylidene fluoride-co-hexafluoropropylene, polyvinylidene fluoride-co-trichloroethylene, polyvinylidene fluoride-co-trichloroethylene, polyvinylidene fluoride-co-hexafluoropropylene Butyl acrylate, polymethyl methacrylate, polyacrylonitrile, polyvinylpyrrolidone, polyvinyl acetate, ethylene-co-vinyl acetate, polyethylene oxide, polyarylate, cellulose acetate, cellulose acetate butyrate cellulose acetate propionate, cyanoethyl pullulan, cyanoethyl polyvinyl alcohol, cyanoethyl cellulose, cyanoethyl sucrose, pullulan, carboxymethyl cellulose, styrene-butadiene rubber , at least one of acrylonitrile-styrene-butadiene copolymer and polyimide. However, the type of adhesive is not limited.

[0041] According to an exemplary embodiment of the present invention, the electrode active material layer may be disposed on the primer layer, and may have a regio...

Embodiment 1

[0110] An electrode stack provided with a polyethylene terephthalate (PET) insulating layer, an aluminum current collector layer, and a primer layer in this order was prepared.

[0111] The thickness of the insulating layer is about 15 μm, and the transmittance of the insulating layer at a wavelength of 400 nm to 1,200 nm is 90% or more. The thickness of the collector layer was about 20 μm. The primer layer contains carbon black and polyvinylidene fluoride (PVDF), and the thickness of the primer layer is about 3 μm.

[0112] will contain LiCoO 2 The electrode active material layer is disposed on the primer layer included in the electrode stack. The length of the electrode active material layer was about 25 mm, the width of the electrode active material layer was about 10 mm, and the thickness of the electrode active material layer was about 95 μm.

[0113] An etching mask is formed in a partial region of the electrode active material layer, and a partial region of the elect...

Embodiment 2

[0117] The electrode sheet was welded to the electrode stack by the same method as that of Example 1 except that the pulse energy was 17.5 mJ.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a method of welding an electrode tab and a collector layer using a pulsed laser beam, and a cable-type rechargeable battery including an electrode manufactured according to the method.

Description

technical field [0001] This application claims priority to and the benefit of Korean Patent Application No. 10-2017-0081403 filed in the Korean Intellectual Property Office on Jun. 27, 2017, the entire contents of which are incorporated herein by reference. [0002] The present invention relates to a method of welding electrode sheets and a cable-type rechargeable battery including electrodes manufactured according to the method. Background technique [0003] A rechargeable battery refers to a device that converts external electrical energy into chemical energy, stores chemical energy, and generates electricity when electricity is needed. Rechargeable batteries have economic and environmental advantages over primary batteries used as primary batteries. [0004] The electrode for a rechargeable battery is configured such that an insulating layer, a collector layer, a primer layer, and an electrode active material layer are arranged in this order. Furthermore, in order for t...

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): H01M50/531H01M10/058H01M10/04H01M10/0587B23K26/21H01M4/02B23K101/38H01M50/534H01M50/536
CPCH01M10/0587B23K2101/38B23K2103/10B23K26/22B23K26/244B23K26/32B23K26/0622H01M50/536H01M2004/025H01M4/78H01M10/0525H01M10/0431H01M50/531H01M50/534H01M4/04H01M10/0422H01M50/538Y02E60/10Y02P70/50H01M4/667
Inventor 李镇洙秋素英金珠鍊辛富建
Owner LG ENERGY SOLUTION LTD