Electricity storage device and vehicle

Patent metadata

Field	Value
Publication number	US-9627721-B2
Application number	US-201113818887-A
Country	US
Kind code	B2
Filing date	Aug 30, 2011
Priority date	Aug 31, 2010
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

An electricity storage device includes: a first battery stack ( 15 ) including a plurality of cells that are aligned in a first direction; a second battery stack ( 11 to 14 ) including a plurality of cells that are aligned in a second direction different from the first direction, the second battery stack being placed under the first battery stack; and a duct for coolant. The duct is disposed along the first battery stack and is positioned between the first battery stack and the second battery stack.

First claim

The invention claimed is:

1. An electricity storage device comprising:
a first battery stack including a plurality of cells that are aligned in a first direction;
a plurality of second battery stacks each including a plurality of cells that are aligned in a second direction different from the first direction, the second battery stacks being spaced apart in intervals so as to have gaps between adjacent second battery stacks, the second battery stacks being placed under the first battery stack; and
a duct for coolant,
wherein the duct is disposed along the first direction of the first battery stack and is positioned between the first battery stack and the second battery stacks, so as to be disposed over portions of the second battery stacks that intersect the first battery stack.

2. The electricity storage device according to claim 1 , wherein the duct is connected to each of the second battery stacks and supplies coolant to the second battery stacks.

3. The electricity storage device according to claim 2 , wherein the ducts connected to the second battery stacks are joined together on an upstream side in terms of a flow path of the coolant.

4. The electricity storage device according to claim 2 , further comprising electronic equipment that is used to control charging and discharging of the electricity storage device, the electronic equipment being placed under the plurality of ducts at a position such that the electronic equipment faces the plurality of ducts.

5. The electricity storage device according to claim 1 , wherein the first direction and the second direction are perpendicular to each other.

6. A vehicle comprising:
the electricity storage device according to claim 1 ; and
a motor/generator that receives electric power from the electricity storage device to generate kinetic energy for driving the vehicle.

Assignees

• Kosaki Akihiro
• Fukuda Shigeru
• Ozaki Shigeto
• Mizuno Yasutoshi
• Hara Toshiyuki
• Kumagai Takanori
• Iida Kenji
• Nakagawa Isao
• Kobayashi Makoto
• Ogasawara Shigeyuki
• Azuma Shinsuke
• Fujiwara Yoshiaki
• Toyota Motor Co Ltd
• Yazaki Corp

Inventors

• Kosaki Akihiro
• Fukuda Shigeru
• Ozaki Shigeto
• Mizuno Yasutoshi
• Hara Toshiyuki
• Kumagai Takanori
• Iida Kenji
• Nakagawa Isao
• Kobayashi Makoto
• Ogasawara Shigeyuki
• Azuma Shinsuke
• Fujiwara Yoshiaki

Classifications

• H02J7/865

  Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence) · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title

• H01M50/209

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/507

  comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules · CPC title

• B60K1/04

  of the electric storage means for propulsion · CPC title