Electrode lead wire member and battery

Patent metadata

Field	Value
Publication number	US-10985359-B2
Application number	US-201916266441-A
Country	US
Kind code	B2
Filing date	Feb 4, 2019
Priority date	Feb 5, 2018
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

Provided are an electrode lead wire member including a sealing film having high adhesive strength and resistance to an electrolytic solution, and a battery including the electrode lead wire member. Provided is an electrode lead wire member including: a derivation portion extending in one direction; a surface-treated layer formed, at the derivation portion, on a surface of the derivation portion; and a sealing film provided in contact with the surface-treated layer, in which the sealing film has an adhesive resin layer in contact with the surface-treated layer, and the adhesive resin layer contains imine-modified polyolefin or modified polyolefin having a carbodiimide group.

First claim

What is claimed is:

1. An electrode lead wire member comprising:
a derivation portion extending in one direction;
a surface-treated layer formed, at said derivation portion, on a surface of said derivation portion; and
a sealing film provided in contact with said surface-treated layer,
wherein
said sealing film has an adhesive resin layer in contact with said surface-treated layer,
said adhesive resin layer contains imine-modified polyolefin, and
said surface-treated layer has an acidic group.

2. The electrode lead wire member according to claim 1 , wherein said sealing film only includes said adhesive resin layer.

3. The electrode lead wire member according to claim 1 , wherein in said sealing film, said adhesive resin layer, a substrate layer, and a second adhesive resin layer are laminated in that order.

4. The electrode lead wire member according to claim 3 , wherein a resin constituting said substrate layer is one or more selected from the group consisting of a fluorine resin, polyether ether ketone, a polyphenylene sulfide resin, polyphenylene ether, a syndiotactic polystyrene resin, polyethylene naphthalate, polyethylene terephthalate, a polyimide resin, a phenol resin, an epoxy resin, an acrylic resin, polyketone, a cyclic olefin resin, polymethylpentene, polypropylene, and polyethylene.

5. The electrode lead wire member according to claim 1 , comprising one pair of sealing films holding said derivation portion, wherein
in said one pair of said sealing films, adhesive resin layers face and come in contact with each other, and simultaneously come in contact with a whole circumference in a circumferential direction of said derivation portion to cover said derivation portion.

6. A battery comprising the electrode lead wire member with the sealing film according to claim 1 .

Assignees

• Fujimori Kogyo Co Ltd

Inventors

• Takei Kunihiro
• Iizuka Hirokazu
• Takeyama Shunsuke

Classifications

• H01M50/197

  having a layered structure · CPC title

• H01M50/178

  for pouch or flexible bag cells · CPC title

• H01M50/562

  characterised by the material · CPC title

• H01M50/186

  characterised by the disposition of the sealing members · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title