Manufacturing method of electric storage apparatus and electric storage apparatus

Patent metadata

Field	Value
Publication number	US-9505082-B2
Application number	US-201314420405-A
Country	US
Kind code	B2
Filing date	Aug 5, 2013
Priority date	Aug 28, 2012
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

A metal foil extending outward from an electrode plate is sandwiched between a first metal member and a second metal member, and ultrasonic vibration is caused to act upon a plurality of sites of action from the first metal member side to join the metal foil to the first metal member and the second metal member. The first metal member has a Vickers hardness of at least 40 Hv and not more than 75 Hv.

First claim

The invention claimed is:

1. A method for manufacturing an electric storage apparatus, comprising:
sandwiching a metal foil extending outward from an electrode plate between a first metal member and a second metal member; and
causing ultrasonic vibration to act upon a plurality of sites of action from a first metal member side to join the metal foil to the first metal member and the second metal member, wherein
the first metal member has a Vickers hardness of at least 40 Hv and not more than 75 Hv.

2. The method for manufacturing an electric storage apparatus according to claim 1 , wherein
in the joining, a vibration tool that has a contact surface capable of contacting the first metal member and causes ultrasonic vibration to act upon the first metal member is used, and
the contact surface is constituted by one or a plurality of projections.

3. The method for manufacturing an electric storage apparatus according to claim 1 , wherein
end edges of the first metal member and the second metal member are coupled with each other by a joining section, and
in the sandwiching, the metal foil is sandwiched between the first metal member and the second metal member such that an end edge of the metal foil is in contact with the joining section.

4. An electric storage apparatus comprising:
an electric storage element comprising: an electrode assembly having a metal foil extending on one end side; and an auxiliary plate for ultrasonic welding that has a plurality of joining portions joined to the metal foil by ultrasonic vibration and is placed against the metal foil, wherein
the auxiliary plate has a Vickers hardness of at least 40 Hv and not more than 75 Hv.

Assignees

• Gs Yuasa Int Ltd
• Gs Yuasa Int Ltd

Inventors

• Murakami Satoshi
• Yoshitake Shinsuke
• Kishimoto Tomonori

Classifications

• H01M50/553

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

• H01M50/55

  on the same side of the cell · CPC title

• H01M50/176

  for prismatic or rectangular cells (H01M50/181 takes precedence) · CPC title

• H01M50/567

  by fixing means, e.g. screws, rivets or bolts · CPC title

• H01M50/534

  characterised by the material of the leads or tabs · CPC title