Power storage device

Patent metadata

Field	Value
Publication number	US-11909017-B2
Application number	US-201917311093-A
Country	US
Kind code	B2
Filing date	Nov 21, 2019
Priority date	Dec 20, 2018
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A power storage device includes a plurality of laminated power storage modules, a flow path member disposed in contact with the power storage modules and having flow paths for allowing a cooling medium to flow along a first direction intersecting a laminating direction of the power storage modules, a pair of restraining plates disposed to sandwich the power storage modules and the flow path member in the laminating direction, fastening members applying a restraining load to the power storage modules and the flow path member via the pair of restraining plates by fastening the restraining plates to each other, and a lead-in duct disposed at one end portion of the flow path member in the first direction and leading the cooling medium into each of the flow paths.

First claim

The invention claimed is:

1. A power storage device comprising:
a plurality of laminated power storage modules;
a flow path member disposed in contact with the power storage modules and having a plurality of flow paths configured to allow a cooling medium to flow along a first direction intersecting a laminating direction of the power storage modules;
a pair of restraining plates disposed to sandwich the plurality of power storage modules and the flow path member in the laminating direction;
a plurality of fastening members configured to apply a restraining load to the plurality of power storage modules and the flow path member via the pair of restraining plates by fastening the pair of restraining plates to each other; and
a lead-in duct disposed at one end portion of the flow path member in the first direction and configured to lead the cooling medium into each of the plurality of flow paths, wherein
the plurality of fastening members include a plurality of first fastening members arranged along an extending direction of the lead-in duct at one end portion of the restraining plate in the first direction, and
each of the plurality of first fastening members extends along the laminating direction to pass through the inside of the lead-in duct.

2. The power storage device according to claim 1 , further comprising:
a lead-out duct disposed at the other end portion of the flow path member in the first direction and configured to allow the cooling medium led out of each of the plurality of flow paths to flow, wherein
the plurality of fastening members include a plurality of second fastening members arranged along an extending direction of the lead-out duct at the other end portion of the restraining plate in the first direction, and
each of the plurality of second fastening members extends along the laminating direction to pass through the inside of the lead-out duct.

3. The power storage device according to claim 2 , wherein
the lead-in duct is provided with a lead-in port configured to lead the cooling medium into the lead-in duct,
the lead-out duct is provided with a lead-out port configured to lead the cooling medium out of the lead-out duct,
the lead-in port and the lead-out port are located on one end portion side in an arrangement direction of the plurality of flow paths, and
the plurality of first fastening members are disposed such that a space between the first fastening members adjacent to each other increases as a distance from the lead-in port increases.

4. The power storage device according to claim 2 , wherein
the lead-in duct is provided with a lead-in port configured to lead the cooling medium into the lead-in duct,
the lead-out duct is provided with a lead-out port configured to lead the cooling medium out of the lead-out duct,
the lead-in port is located on one end portion side in an arrangement direction of the plurality of flow paths,
the lead-out port is located on the other end portion side in an arrangement direction of the plurality of flow paths, and
the plurality of first fastening members are disposed such that a space between the first fastening members adjacent to each other decreases as a distance from the lead-in port increases.

5. The power storage device according to claim 1 , further comprising:
a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein
each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted.

6. The power storage device according to claim 2 , further comprising:
a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein
each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted.

7. The power storage device according to claim 3 , further comprising:
a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein
each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted.

8. The power storage device according to claim 4 , further comprising:
a plurality of space holding members configured to hold a space between the pair of restraining plates, wherein
each of the plurality of space holding members has an insertion hole disposed inside the lead-in duct and through which the first fastening member is inserted.

Assignees

• Toyota Jidoshokki Kk
• Toyota Motor Co Ltd

Inventors

• Kotake Hirokazu
• Yamasaki Takafumi
• MARIYA Tsuyoshi
• Terashima Daiki
• Morioka Satoshi
• Hase Yusuke
• Okumura Motoyoshi

Classifications

• H01M10/613 Primary

  Cooling or keeping cold · CPC title

• H01G2/08

  Cooling arrangements; Heating arrangements; Ventilating arrangements · CPC title

• H01G11/10

  Multiple hybrid or EDL capacitors, e.g. arrays or modules (housings, cases, encapsulations or mountings thereof H01G11/78) · CPC title

• H01M10/0481

  Compression means other than compression means for stacks of electrodes and separators · CPC title

• H01M10/625

  Vehicles · CPC title