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Sheath material for lithium ion battery

A technology for lithium-ion batteries and packaging materials, which is applied in the direction of battery box/case materials, secondary batteries, battery boxes/coatings, etc. It can solve problems such as inability to improve warpage, achieve excellent formability, and reduce warpage.

Pending Publication Date: 2020-12-22
TOPPAN PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that when the encapsulating material is stretched and molded, since the stretched base layer tends to return to its original state, the resulting warpage cannot be improved.

Method used

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  • Sheath material for lithium ion battery
  • Sheath material for lithium ion battery
  • Sheath material for lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] refer to Figure 1 ~ Figure 3 One embodiment of the present invention will be described. figure 1 It is a cross-sectional view showing a packaging material for a lithium ion battery (hereinafter simply referred to as a "packaging material") 1 according to the present embodiment.

[0026] like figure 1 As shown, the encapsulating material 1 is sequentially stacked on one side (first surface) of a sheet-shaped base material layer 11 with the same sheet-shaped first adhesive layer 12, metal foil layer 13, anti-corrosion treatment layer 14, A laminate of the second adhesive layer 15 and the sealing layer 16 . When the encapsulation material 1 is used to form a lithium ion battery, the base material layer 11 is the outermost layer, and the sealing layer 16 is the innermost layer. In addition, the base material layer 11 is a multilayer film, the outer side of the battery is the second base material layer 11b, and the layer in contact with the first adhesive layer 12 is the...

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Abstract

The invention discloses a sheath material 1 for a lithium ion battery which comprises a base material layer (11) having a first base material layer (11a) formed from a polyester resin or a polyamide resin, and a second base material layer (11b) that contains a polyester elastomer and is formed on the first base material layer (11a); a first adhesive layer (12) laminated on the first base materiallayer (11a); a metal foil layer (13) laminated on the first adhesive layer (12); an anti-corrosion treatment layer (14) laminated on the metal foil layer (13); a second adhesive layer (15) formed on the anti-corrosion treatment layer (14); and a sealing layer (16) formed on the second adhesive layer (15).

Description

[0001] This application is a divisional application of the application with the application number 201480061523.5, the application date is November 11, 2014, and the invention title is "Packaging Material for Lithium-ion Batteries". technical field [0002] The invention relates to packaging materials for lithium ion batteries. [0003] this application claims priority based on Japanese Patent Application No. 2013-234082 for which it applied in Japan on November 12, 2013, and uses the content here. Background technique [0004] Conventionally, nickel-metal hydride batteries and lead storage batteries are known as secondary batteries. On the other hand, since secondary batteries must be downsized due to miniaturization of portable devices and restrictions on installation space, lithium-ion batteries with high energy density are attracting attention. Metal cans are currently used as packaging materials for lithium-ion batteries (hereinafter sometimes simply referred to as "pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/0525H01M50/119H01M50/121H01M50/129H01M50/133
CPCH01M10/0525Y02E60/10H01M50/545H01M50/124H01M50/133H01M50/121H01M50/129H01M50/119
Inventor 谷口智昭
Owner TOPPAN PRINTING CO LTD