Cell pack and container provided with same

Patent metadata

Field	Value
Publication number	US-10522799-B2
Application number	US-201314427227-A
Country	US
Kind code	B2
Filing date	Jul 31, 2013
Priority date	Sep 12, 2012
Publication date	Dec 31, 2019
Grant date	Dec 31, 2019

Abstract

A battery pack that reduces a temperature difference between single cells and can increase a battery capacity per volume and a container provided with the same are provided. A battery pack 100, includes: a battery module 10 including a plurality of single cells 1 arranged in parallel in a line; and a partition member 20 provided on a side surface of the battery module 10 and forming a flow channel 21 through which a gas for exchanging heat with the plurality of single cells 1 is flowable, and the partition member 20 is provided so that the gas flowing through the flow channel 21 and at least two single cells 1 exchange heat and is inclined with respect to a direction orthogonal to an arrangement direction of the plurality of single cells 1 arranged in parallel in a line.

First claim

The invention claimed is:

1. A battery pack, comprising:
a plurality of battery modules arranged in a left and right direction;
each battery module includes a plurality of single cells arranged in an up and down direction in a line to define a module height such that each battery module has a short length in a front and back direction that is shorter than the module height; and
a plurality of partition members provided on a side surfaces of each battery module and forming a plurality of flow channels with an opposing surface, wherein each partition member:
is provided so that gas flowing through the plurality of flow channels exchanges heat with at least two of the plurality of single cells,
is inclined with respect to a plane orthogonal to the up and down arrangement direction of the plurality of battery modules,
is provided so that a height of each partition member in the up and down arrangement direction is gradually increased in a flow direction of the gas flowing through the plurality of flow channels, and
is provided continuously from one end to an opposite end of each battery module along the short length of the plurality of battery modules extending across at least the entirety of a first cell and a portion of a second cell of the plurality of single cells adjacent to each other in the up and down direction.

2. The battery pack according to claim 1 , wherein
at least one partition member is inclined at an angle of 45° or more but 60° or less with respect to the plane orthogonal to the up and down arrangement direction.

3. The battery pack according to claim 1 , comprising
a housing constituent member on which recesses and protrusions are continuously provided,
the recesses and protrusions thereby defining the plurality of partition members, wherein
the plurality of flow channels are provided between adjacent protrusions.

4. The battery pack according to claim 1 , comprising
a housing constituting a case that houses the plurality of single cells included in each battery module, wherein
the plurality of partition members are provided on respective side surfaces of the housing.

5. The battery pack according to claim 4 , wherein the housing and the plurality of partition members are integrally provided.

6. The battery pack according to claim 1 , wherein
an interval between adjacent partition members is different from an interval between other adjacent partition members.

7. The battery pack according to claim 1 , wherein
an interval between adjacent partition members is gradually increased in the flow direction of the gas flowing through each flow channel of the plurality of flow channels.

8. The battery pack according to claim 1 , wherein
intervals between adjacent battery modules are gradually increased toward a center of the plurality of battery modules.

9. A battery-pack mounting container, wherein
the battery pack according to claim 1 is mounted therein.

10. The battery-pack mounting container according to claim 9 , wherein
the battery pack is provided so that an inflow side of the gas flowing through the plurality of flow channels faces an inner wall of the container.

11. The battery-pack mounting container according to claim 10 , comprising:
a workroom in which the battery pack is installed; and
an in-container flow channel that is provided in the periphery of the workroom and through which the gas to flow into the plurality of flow channels provided in the battery pack flows, wherein
the battery pack is provided to face an inner wall of the workroom in the container;
the inner wall facing the battery pack is provided so that the gas is flowable through the inner wall; and
a circulation cycle is formed so that the gas is circulated by passing through the in-container flow channel, the inner wall, the plurality of flow channels provided in the battery pack, and the workroom in this order.

12. The battery pack according to claim 1 , wherein
electrode terminals of the plurality of single cells arranged in the up and down direction in the line are provided in the direction orthogonal to the up and down arrangement direction, and
the plurality of partition members are provided so that the electrode terminals are provided downstream the flow direction of the gas flowing through the plurality of flow channels.

Assignees

• Hitachi Ltd

Inventors

• Hisano Nae
• Yamauchi Shin
• Honda Mitsutoshi
• Fujimura Hidekazu
• Takeda Kenji

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01M10/6557 Primary

  arranged between the cells · CPC title

• H01M10/4207

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M10/6566

  Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers (H01M10/6565 takes precedence) · CPC title

• H01M10/627

  Stationary installations, e.g. power plant buffering or backup power supplies · CPC title