Energy storage apparatus

Patent metadata

Field	Value
Publication number	US-12294101-B2
Application number	US-202017766477-A
Country	US
Kind code	B2
Filing date	Oct 7, 2020
Priority date	Oct 10, 2019
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

In the present embodiment, the energy storage apparatus includes: an energy storage device; a terminal member adjacent to the energy storage device; and a restraint member fixed to the terminal member. The restraint member includes a first portion that extends along the energy storage device in an arrangement direction in which the energy storage device and the terminal member are arranged, a second portion that extends along the terminal member in a direction intersecting the arrangement direction and is fixed to the terminal member, and a connection that connects ends of the first portion and the second portion to each other. The connection includes a plurality of bent portions or curved portions.

First claim

The invention claimed is:

1. An energy storage apparatus comprising:
an energy storage device;
a terminal member adjacent to the energy storage device; and
a restraint member fixed to the terminal member,
wherein the restraint member includes:
a first portion that extends along the energy storage device in an arrangement direction in which the energy storage device and the terminal member are arranged;
a second portion that extends along the terminal member in a direction intersecting the arrangement direction and is fixed to the terminal member; and
a connection that connects ends of the first portion and the second portion to each other,

wherein the connection includes a plurality of bent portions or curved portions, and
wherein the connection includes a spring-property.

2. The energy storage apparatus according to claim 1 , wherein the connection includes:
two bent portions or curved portions that are convex in a direction away from an area where the energy storage device is disposed; and
a bent portion or curved portion that is disposed between the two bent portions or curved portions and is convex in a direction approaching the area.

3. The energy storage apparatus according to claim 2 , wherein the bent portion or the curved portion that is convex in an approaching direction is disposed at a position closer to the first portion than the second portion in the connection.

4. The energy storage apparatus according to claim 1 , wherein the restraint member includes a third portion that is connected to the first portion, the second portion, and the connection, and is disposed along the energy storage device.

5. The energy storage apparatus according to claim 1 , wherein the first portion comprises a plate-shaped portion spreading along the energy storage device, and
wherein the second portion comprises a plate-shaped portion spreading along the terminal member.

6. The energy storage apparatus according to claim 5 , wherein the first portion, the connection, and the second portion are formed integrally with each other and have a plate shape.

7. The energy storage apparatus according to claim 2 , wherein the two bent portions or curved portions and the bent portion or curved portion are one body.

8. The energy storage apparatus according to claim 1 , wherein the connection includes:
a first curved portion;
a second curved portion; and
a third curved portion disposed between the first curved portion and the second curved portion.

9. The energy storage apparatus according to claim 8 , wherein the third curved portion has an opposite convex direction to the first curved portion and the second curved portion, whereby the spring property is generated.

10. The energy storage apparatus according to claim 1 , wherein the restraint member is connected to the first portion, the second portion, and the connection in a state where the first portion and the second portion extending in different directions are connected by the connection, thereby improving rigidity of the restraint member.

11. The energy storage apparatus according to claim 1 , wherein the connection includes a plurality of connections formed as one body.

12. The energy storage apparatus according to claim 1 , further comprising an insulator that has an insulating property and is disposed between the restraint member and the energy storage device.

13. An energy storage apparatus comprising:
an energy storage device;
a terminal member adjacent to the energy storage device; and
a restraint member fixed to the terminal member,
wherein the restraint member includes:
a first portion that extends along the energy storage device in an arrangement direction in which the energy storage device and the terminal member are arranged;
a second portion that extends along the terminal member in a direction intersecting the arrangement direction and is fixed to the terminal member; and
a connection that connects ends of the first portion and the second portion to each other,

wherein the connection includes a first connection and a second connection,
wherein the first connection connects an end of the arrangement direction of the first portion and an end of the direction intersecting the arrangement direction of the second portion to each other,
wherein the first connection includes a plurality of bent portions or curved portions, and
wherein the first connection includes:
two bent portions or curved portions that are convex in a direction away from an area where the energy storage device is disposed; and
a bent portion or curved portion that is disposed between the two bent portions or curved portions and is convex in a direction approaching the area.

14. The energy storage apparatus according to claim 13 , wherein the two bent portions or curved portions and the bent portion or curved portion are one body.

15. The energy storage apparatus according to claim 13 , wherein the bent portion or the curved portion that is convex in the direction approaching the area is disposed at a position closer to the first portion than the second portion in the connection.

16. The energy storage apparatus according to claim 13 , wherein the restraint member is connected to the first portion, the second portion, and the connection in a state where the first portion and the second portion extending in different directions are connected by the connection, thereby improving rigidity of the restraint member.

17. An energy storage apparatus comprising:
an energy storage device;
a terminal member adjacent to the energy storage device; and
a restraint member fixed to the terminal member,
wherein the restraint member includes:
a first portion that extends along the energy storage device in an arrangement direction in which the energy storage device and the terminal member are arranged;
a second portion that extends along the terminal member in a direction intersecting the arrangement direction and is fixed to the terminal member; and
a connection that connects ends of the first portion and the second portion to each other,

wherein the connection includes a first connection and a second connection,
wherein the first connection is disposed between the first portion and the second portion as viewed in the arrangement direction,
wherein the first connection includes a plurality of bent portions or curved portions, and
wherein the first connection includes:
two bent portions or curved portions that are convex in a direction away from an area where the energy storage device is disposed; and
a bent portion or curved portion that is disposed between the two bent portions or curved portions and is convex in a direction approaching the area.

18. The energy storage apparatus according to claim 17 , wherein the two bent portions or curved portions and the bent portion or curved portion are one body.

19. The energy storage apparatus according to claim 17 , wherein the bent portion or the curved portion that is convex in the direction approaching the area is disposed at a position closer to the first portion than the second portion in the connection.

20. The energy storage apparatus according to claim 17 , wherein the restraint member is connected to the first portion, the second portion, and the connection in a state where the first portion and the second portion extending in different directions are connected by the connection, thereby improving rigidity of the restraint member.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Nishimura Yosuke

Classifications

• H01M50/209 Primary

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

• H01M50/296

  characterised by terminals of battery packs (terminals of batteries H01M50/543) · CPC title

• H01M50/264 Primary

  for cells or batteries, e.g. straps, tie rods or peripheral frames · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/262 Primary

  with fastening means, e.g. locks · CPC title