Energy storage apparatus

Patent metadata

Field	Value
Publication number	US-2017279100-A1
Application number	US-201715620020-A
Country	US
Kind code	A1
Filing date	Jun 12, 2017
Priority date	Sep 12, 2013
Publication date	Sep 28, 2017
Grant date	—

Abstract

An energy storage apparatus includes one or more energy storage devices, and an outer housing that houses the one or more energy storage devices. The outer housing includes an outer housing main body, a cover that closes an opening of the outer housing main body, an outer terminal disposed on the cover, and a communication part defining a passageway allowing a communication between an interior and an exterior of the outer housing. The communication part includes a functional membrane. A ventilation hose for passage of a gas, which has passed the functional membrane, is connected to an end of the communication part.

First claim

1 . An energy storage apparatus, comprising:
one or more energy storage devices; and an outer housing that houses the one or more energy storage devices, wherein the outer housing includes an outer housing main body, a cover that closes an opening of the outer housing main body, an outer terminal disposed on the cover, and a communication part defining a passageway allowing a communication between an interior and an exterior of the outer housing, wherein the communication part includes a functional membrane, and wherein a ventilation hose for passage of a gas, which has passed the functional membrane, is connected to an end of the communication part.

2 . The electric storage apparatus according to claim 1 , wherein the communication part further includes a protruding section to which the ventilation hose is connected, the protruding section protruding from the outer housing.

3 . The electric storage apparatus according to claim 2 , wherein the protruding section is an integral part of the cover.

4 . The electric storage apparatus according to claim 1 , wherein the communication part further includes a pressure valve, which is in a first state when a pressure in the outer housing is equal to or less than a predetermined value and is brought into a second state when the pressure in the outer housing is more than the predetermined value.

5 . The electric storage apparatus according to claim 1 , wherein the functional membrane allows passage of the gas and prohibits passage of a liquid.

6 . The electric storage apparatus according to claim 1 , further comprising a shield plate disposed between the functional membrane and the end of the communication part,
the shield plate partly blocking the passageway between the functional membrane and the end of the communication part.

7 . The electric storage apparatus according to claim 6 , wherein the shield plate comprises plural shield plates that overlap when viewed in a direction penetrating the shield plates.

8 . The electric storage apparatus according to claim 1 , wherein the one or more energy storage devices comprises lithium-ion batteries, and
wherein the outer housing comprises a resin.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Kusunoki Toshiki
• Ushijima Osamu

Classifications

• H01M2220/20

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

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M10/0525

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

• H01M50/367

  Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title