Battery and battery pack

Patent metadata

Field	Value
Publication number	US-9627658-B2
Application number	US-201414481232-A
Country	US
Kind code	B2
Filing date	Sep 9, 2014
Priority date	Mar 13, 2012
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

According to one embodiment, a battery includes a container, an electrode group, an electrolytic solution, a sealing plate, a terminal, an injecting port, a sealing plug, a lead and a pressing member. The injecting port is opened in the sealing plate. The sealing plug closes the injecting port of the sealing plate, and is made of an elastic material. The lead electrically connects a positive electrode or a negative electrode of the electrode group to the terminal. The pressing member is integrated with the lead. The pressing member presses the sealing plug to the sealing plate.

First claim

What is claimed is:

1. A battery comprising:
a container;
an electrode group which is provided in the container and comprises a positive electrode and a negative electrode;
an electrolytic solution which is provided in the container;
a sealing plate which is provided in an opening part of the container;
a terminal which is provided on the sealing plate;
an injecting port which is opened in the sealing plate;
a sealing plug which closes the injecting port of the sealing plate and is made of an elastic material;
a lead which electrically connects the positive electrode or the negative electrode of the electrode group to the terminal; and
a pressing member which is integrated with the lead and presses the sealing plug to the sealing plate,
wherein the sealing plug is disposed between the injecting port of the sealing plate and the pressing member of the lead.

2. The battery according to claim 1 ,
wherein the pressing member is made of the same material as that of the lead.

3. The battery according to claim 2 ,
wherein the lead comprises a connecting plate to which the terminal is fixed, and the connecting plate serves as the pressing member.

4. The battery according to claim 2 ,
wherein the pressing member is made of aluminum or an aluminium alloy.

5. A battery pack, comprising:
one or more of the batteries according to claim 1 .

6. The battery pack according to claim 5 , further comprising a protection circuit.

Assignees

• Toshiba Kk

Inventors

• Takenouchi Yoshio
• Takahashi Kenichi
• Ogura Mitsugi

Classifications

• H01M10/0413 Primary

  Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/0431

  Cells with wound or folded electrodes (H01M10/045 takes precedence) · CPC title

• H01M10/0587

  of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title