Manufacturing method of electrode body and electrode body

Patent metadata

Field	Value
Publication number	US-2018048021-A1
Application number	US-201715665638-A
Country	US
Kind code	A1
Filing date	Aug 1, 2017
Priority date	Aug 9, 2016
Publication date	Feb 15, 2018
Grant date	—

Abstract

A method of manufacturing an electrode body includes a charging step, a first laminating step, and a second laminating step to manufacture the electrode body by laminating positive and negative electrode plates by interposing a separator therebetween. In the charging step, one of the positive and negative electrode plates is a first electrode plate and an other one is a second electrode plate, and one of the first electrode plate and the separator is charged to a potential enough to generate an attraction force between the first electrode plate and the separator. The first laminating step includes bringing the first electrode plate and the separator, at least one of which is charged, into direct contact to attach each other to form a laminated body. In the second charging step, the second electrode plate is laminated on the laminated body to form the electrode body.

First claim

What is claimed is:

1 . A manufacturing method of an electrode body formed by laminating a positive electrode plate and a negative electrode plate by interposing a separator therebetween, wherein
one of the positive electrode plate and the negative electrode plate is a first electrode plate and an other one is a second electrode plate, and the manufacturing method includes:
a charging step of electrically charging at least one of the first electrode plate and the separator at an electric potential enough to generate an attraction force between the first electrode plate and the separator;
a first laminating step of bringing the first electrode plate and the separator, at least one of which is charged, into direct contact such that the first electrode plate and the separator are attached to each other to form a laminated body; and
a second laminating step of laminating the second electrode plate on the laminated body to form the electrode body.

2 . The manufacturing method of an electrode body according to claim 1 , wherein the charging step includes charging at least one of the first electrode plate and the separator such that a discharge voltage between the first electrode plate and the separator to be brought into contact in the first laminating step falls within a range from 1 kV to 20 kV inclusive.

3 . An electrode body including a positive electrode plate and a negative electrode plate laminated with a separator interposed therebetween, wherein
one of the positive electrode plate and the negative electrode plate is a first electrode plate, at least one of the first electrode plate and the separator is electrically charged at an electric potential enough to generate an attraction force between the first electrode plate and the separator, and the first electrode plate and the separator are directly contacted with each other.

Assignees

• Toyota Motor Co Ltd

Inventors

• Hiramoto Natsumi
• Ochiai Akihiro

Classifications

• H01M4/139 Primary

  Processes of manufacture · CPC title

• H01M4/667

  in the form of layers, e.g. coatings · CPC title

• H01M4/04

  Processes of manufacture in general · CPC title

• B32B2457/10

  Batteries · CPC title

• H01M4/80

  Porous plates, e.g. sintered carriers · CPC title