Battery pack and aircraft

Patent metadata

Field	Value
Publication number	US-11909067-B2
Application number	US-202217688936-A
Country	US
Kind code	B2
Filing date	Mar 8, 2022
Priority date	Mar 22, 2021
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

In a battery pack, a housing includes an exhaust portion provided on an upper side in a gravity direction with respect to a housing portion that houses a live part. The exhaust portion includes: a storage portion configured to store a liquid; a first communication portion that communicates between an interior of the housing portion and an interior of the exhaust portion; and a second communication portion that communicates between an outside of a housing and an inside of the exhaust portion. When the battery pack is viewed from the upper side in the gravity direction, an opening of the second communication portion on an inner side of the exhaust portion is provided at a position that overlaps the storage portion and that does not overlap an opening of the first communication portion on the inner side of the exhaust portion.

First claim

What is claimed is:

1. A battery pack comprising:
a housing; and
a live electrical part housed in the housing,
wherein
the housing includes:
a housing portion in which the live electrical part is housed; and
an exhaust portion provided on an upper side in a gravity direction with respect to the housing portion in a state where the battery pack is placed,
wherein
the exhaust portion includes:
a storage portion configured to store a liquid;
a first communication portion that communicates between an interior of the housing portion and an interior of the exhaust portion; and
a second communication portion that communicates between an outside of the housing and an inside of the exhaust portion, and
wherein
when the battery pack is viewed from the upper side in the gravity direction, an opening of the second communication portion on an inner side of the exhaust portion is provided at a position that overlaps the storage portion and that does not overlap an opening of the first communication portion on the inner side of the exhaust portion,
an opening of the first communication portion on an inner side of the exhaust portion is provided at a position that is located on the upper side in the gravity direction with respect to a bottom surface of the storage portion, and
the first communication portion is provided at a position that is located on a lower side in the gravity direction with respect to the opening of the second communication portion on the inner side of the exhaust portion.

2. The battery pack according to claim 1 , wherein
the opening of the second communication portion on the inner side of the exhaust portion is provided on the upper side in the gravity direction with respect to the storage portion.

3. The battery pack according to claim 1 , further comprising:
a third communication portion that is provided between the storage portion and the second communication portion in the gravity direction and that enables the storage portion, the first communication portion, and the second communication portion to communicate with each other.

4. The battery pack according to claim 1 , wherein
the storage portion includes a drain hole on a bottom surface side of a side surface thereof, the drain hole allowing an outside of the housing and an inside of the storage portion to communicate with each other, and
in a direction toward the drain hole, a bottom surface of the storage portion is inclined downward in the gravity direction.

5. The battery pack according to claim 1 , further comprising:
a water supply and discharge nozzle configured to supply and discharge cooling water for cooling the live electrical part; and
a junction box to which electrodes of the live electrical part are connected,
wherein
when the battery pack is viewed from a side thereof, the exhaust portion is disposed between the water supply and discharge nozzle and the junction box in a horizontal direction orthogonal to the gravity direction.

6. An aircraft equipped with a battery pack, the battery pack including: a housing; and a live electrical part housed in the housing,
wherein
the housing includes:
a housing portion in which the live electrical part is housed; and
an exhaust portion provided on an upper side in a gravity direction with respect to the housing portion in a state where the battery pack is placed,
wherein
the exhaust portion includes:
a storage portion configured to store a liquid;
a first communication portion that communicates between an interior of the housing portion and an interior of the exhaust portion; and
a second communication portion that communicates between an outside of the housing and an inside of the exhaust portion, and
wherein
when the battery pack is viewed from the upper side in the gravity direction, an opening of the second communication portion on an inner side of the exhaust portion is provided at a position that overlaps the storage portion and that does not overlap an opening of the first communication portion on the inner side of the exhaust portion,
an opening of the first communication portion on an inner side of the exhaust portion is provided at a position that is located on the upper side in the gravity direction with respect to a bottom surface of the storage portion, and
the first communication portion is provided at a position that is located on a lower side in the gravity direction with respect to the opening of the second communication portion on the inner side of the exhaust portion,
the aircraft comprising:
an exhaust pipe that communicates between the second communication portion and an outside of the aircraft.

Assignees

• Honda Motor Co Ltd

Inventors

• Ishihara Yuya

Classifications

• H01M50/367 Primary

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

• B60L58/26 Primary

  by cooling · CPC title

• H01M10/613

  Cooling or keeping cold · CPC title

• H01M10/625

  Vehicles · CPC title

• H01M10/6567

  Liquids · CPC title