Energy storage apparatus

Patent metadata

Field	Value
Publication number	US-11909069-B2
Application number	US-202217839186-A
Country	US
Kind code	B2
Filing date	Jun 13, 2022
Priority date	Sep 12, 2013
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

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 opening that allows communication between an interior and an exterior of the outer housing. The opening is sealed by a first pressure adjuster and a second pressure adjuster arranged complementary to each other. The first pressure adjuster allows passage of gas and prohibits passage of liquid. The second pressure adjuster prohibits passage of the gas and the liquid, and releases an internal pressure in the interior of the outer housing when the internal pressure exceeds a predetermined pressure.

First claim

The invention claimed is:

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 a communication part defining a passageway allowing communication between an interior and an exterior of the outer housing,
wherein the communication part is tubular and protrudes from the outer housing,
wherein the communication part includes a functional membrane that allows passage of gas and prohibits passage of liquid,
wherein the functional membrane is disposed at a location closer to the interior of the outer housing than the exterior of the outer housing, and
wherein a direction of passing through the functional membrane is along a central axis of the communication part.

2. The energy storage apparatus according to claim 1 ,
wherein each of the one or more energy storage devices includes a positive electrode terminal and a negative electrode terminal arranged in a first direction, and
wherein the communication part extends along a second direction intersecting the first direction.

3. The energy storage apparatus according to claim 1 , wherein the communication part extends along a third direction intersecting a direction in which the energy storage devices are arranged.

4. The energy storage apparatus according to claim 1 , further comprising a circuit substrate electrically connected to the one or more energy storage devices.

5. The energy storage apparatus according to claim 1 , wherein the outs r housing includes:
an outer housing main body that houses the one or more energy storage devices;
a cover that closes an opening of the outer housing main body; and
an outer terminal disposed on the cover, and
wherein the communication part is formed on the cover.

6. The energy storage apparatus according to claim 1 ,
wherein the outer housing includes an outer housing main body that houses the one or more energy storage devices, a cover that closes an opening of the outer housing main body, and an outer terminal disposed on the cover, and
wherein the communication part is formed on the outer housing main body.

7. The energy storage apparatus according to claim 1 , wherein the communication part includes a shield component arranged so as to maintain communication between the interior and the exterior of the outer housing.

8. 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 a communication part defining a passageway allowing communication between an interior and an exterior of the outer housing,
wherein the communication part protrudes from the outer housing,
wherein the communication part includes a functional membrane that allows passage of gas and prohibits passage of liquid, and
wherein a direction of passing through the functional membrane is along a central axis of the communication part.

9. The energy storage apparatus according to claim 8 ,
wherein the communication part is tubular and defines an internal passageway inside the outer housing.

10. The energy storage apparatus according to claim 8 , further comprising a circuit substrate electrically connected to the one or more energy storage devices.

11. The energy storage apparatus according to claim 8 , wherein the outer housing includes:
an outer housing main body that houses the one or more energy storage devices;
a cover that closes an opening of the outer housing main body; and
an outer terminal disposed on the cover, and
wherein the communication part is formed on the cover.

12. The energy storage apparatus according to claim 8 ,
wherein the outer housing includes an outer housing main body that houses the one or more energy storage devices, a cover that closes an opening of the outer housing main body, and an outer terminal disposed on the cover, and
wherein the communication part is formed on the outer housing main body.

13. The energy storage apparatus according to claim 8 , wherein the communication part includes a shield component arranged so as to maintain communication between the interior and the exterior of the outer housing.

14. 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:
a communication part defining a passageway allowing communication between an interior and an exterior of the outer housing; and
an outer terminal protruding from the outer housing,

wherein the communication part is tubular and protrudes from the outer housing,
wherein the communication part includes a functional membrane that allows passage of gas and prohibits passage of liquid,
wherein the functional membrane is disposed at a location closer to the interior of the outer housing than the exterior of the outer housing,
wherein a direction of passing through the functional membrane is along a central axis of the communication part, and
wherein the central axis of the communication part intersects a direction from which the external terminal protrudes.

15. The energy storage apparatus according to claim 12 ,
wherein each of the one or more energy storage devices includes a positive electrode terminal and a negative electrode terminal arranged in a first direction, and
wherein the communication part extends along a second direction intersecting the first direction.

16. The energy storage apparatus according to claim 14 , wherein the communication part extends along a third direction intersecting a direction in which the energy storage devices are arranged.

17. The energy storage apparatus according to claim 14 , further comprising a circuit substrate electrically connected to the one or more energy storage devices.

18. The energy storage apparatus according to claim 14 , wherein the outer housing includes:
an outer housing main body that houses the one or more energy storage devices;
a cover that closes an opening of the outer housing main body; and
the outer terminal disposed on the cover, and
wherein the communication part is formed on the cover.

19. The energy storage apparatus according to claim 14 ,
wherein the outer housing includes an outer housing main body that houses the one or more energy storage devices, a cover that closes an opening of the outer housing main body, and the outer terminal disposed on the cover, and
wherein the communication part is formed on the outer housing main body.

20. The energy storage apparatus according to claim 14 , wherein the communication part includes a shield component arranged so as to maintain communication between the interior and the exterior of the outer housing.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Kusunoki Toshiki
• Ushijima Osamu

Classifications

• H01M50/394 Primary

  Gas-pervious parts or elements · CPC title

• H01M50/317

  Re-sealable arrangements · CPC title

• H01M10/0525

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

• H01M50/367

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