Energy storage apparatus

Patent metadata

Field	Value
Publication number	US-11495845-B2
Application number	US-201916982743-A
Country	US
Kind code	B2
Filing date	Mar 22, 2019
Priority date	Mar 23, 2018
Publication date	Nov 8, 2022
Grant date	Nov 8, 2022

Abstract

An energy storage device including an electrode terminal, and a case having a case first surface on which the electrode terminal is disposed, and a case second surface, a conductive member, and a first insulating member including a facing portion that faces the case second surface in the first direction, and is disposed between the case second surface and the conductive member, and an extending portion extending from the facing portion in a second direction intersecting the first direction are provided, and in a third direction intersecting the first direction and the second direction, the extending portion is disposed closer to the case first surface on which the electrode terminal is disposed than a case third surface facing the case first surface of the case.

First claim

The invention claimed is:

1. An energy storage apparatus, comprising:
an energy storage device including an electrode terminal, and a case including a first surface on which the electrode terminal is disposed, and a second surface;
a conductive member; and
a first insulating member including a facing portion that faces the second surface in a first direction and is disposed between the second surface and the conductive member, and an extending portion extending from the facing portion in a second direction intersecting the first direction,
wherein in a third direction intersecting the first direction and the second direction, the extending portion is disposed closer to the first surface on which the electrode terminal is disposed than a third surface facing the first surface of the case,
wherein the extending portion includes a first portion and a second portion,
wherein the first portion is closer to the first surface and the second portion is closer to the third surface,
wherein the first portion includes a first width in, the second direction and the second portion includes a second width in the second direction, and
wherein the first width is larger than the second width.

2. The energy storage apparatus according to claim 1 , wherein the extending portion includes a rib protruding in the first direction.

3. The energy storage apparatus according to claim 2 , wherein the rib includes a first rib facing the conductive member in the second direction.

4. The energy storage apparatus according to claim 2 , wherein the rib includes a second rib facing the conductive member in the third direction.

5. The energy storage apparatus according to claim 1 , wherein the energy storage device includes a second insulating member that covers the third surface.

6. The energy storage apparatus according to claim 1 , wherein
the electrode terminal is disposed in the third direction of the energy storage device,
the conductive member includes a concave portion on an outer edge in the third direction, and
the concave portion is recessed in a direction intersecting the first direction.

7. The energy storage apparatus according to claim 6 , wherein when viewed in the first direction, the first insulating member is exposed from the concave portion.

8. The energy storage apparatus according to claim 6 , wherein the concave portion includes a curved outer edge.

9. The energy storage apparatus according to claim 6 , wherein the first insulating member includes a rib disposed in the concave portion.

10. The energy storage apparatus according to claim 6 , further comprising a side member disposed lateral to the energy storage device,
wherein the concave portion is disposed on the side of the first direction of the side member.

11. The energy storage apparatus according to claim 10 , wherein
the side member includes a first corner and a second corner farther from the energy storage device than the first corner in the second direction,
the first corner is formed to have a larger radius of curvature of an outer edge than the second corner, and
the concave portion is formed to have a larger radius of curvature of an outer edge than the first corner.

12. The energy storage apparatus according to claim 1 , comprising a plurality of the energy storage devices,
wherein the facing portion faces the second surfaces of the plurality of energy storage devices.

13. An energy storage apparatus, comprising:
an energy storage device including an electrode terminal, and a case including a first surface on which the electrode terminal is disposed, and a second surface;
a conductive member; and
a first insulating member including a facing portion that faces the second surface in a first direction and is disposed between the second surface and the conductive member, and an extending portion extending from the facing portion in a second direction intersecting the first direction,
wherein in a third direction intersecting the first direction and the second direction, the extending portion is disposed closer to the first surface on which the electrode terminal is disposed than a third surface facing the first surface of the case, and
wherein the extending portion is disposed between an upper end of the facing portion and a lower end of the facing portion when viewed from the first direction.

14. The energy storage apparatus according to claim 13 , wherein the extending portion extends in the third direction.

15. The energy storage apparatus according to claim 13 , wherein the extending portion is sandwiched between the conductive member and a side member in the first direction.

16. The energy storage apparatus according to claim 13 , wherein the extending portion extends in the second direction so as to overlap with a side member disposed lateral to the energy storage device and an outermost energy storage device of a plurality of the energy storage devices when viewed from the first direction.

17. An energy storage apparatus, comprising:
an energy storage device including an electrode terminal, and a case including a first surface on which the electrode terminal is disposed, and a second surface;
a conductive member;
a side member disposed lateral to the energy storage device; and
a first insulating member including a facing portion that faces the second surface in a first direction and is disposed between the second surface and the conductive member, and an extending portion extending from the facing portion in a second direction intersecting the first direction,
wherein in a third direction intersecting the first direction and the second direction, the extending portion is disposed closer to the first surface on which the electrode terminal is disposed than a third surface facing the first surface of the case,
wherein the electrode terminal is disposed in the third direction of the energy storage device,
wherein the conductive member includes a concave portion on an outer edge in the third direction,
wherein the concave portion is recessed in a direction intersecting the first direction,
wherein the concave portion is disposed on the side of the first direction of the side member,
wherein the side member includes a first corner and a second corner farther from the energy storage device than the first corner in the second direction, and
wherein the concave portion is formed to have a larger radius of curvature of an outer edge than the first corner.

18. The energy storage apparatus according to claim 17 , wherein the first corner is fondled to have a larger radius of curvature of an outer edge than the second corner.

19. The energy storage apparatus according to claim 17 , wherein the extending portion is sandwiched between the conductive member and the side member in the first direction.

20. The energy storage apparatus according to claim 17 , wherein a distance from an upper end of the extending portion in the third direction to a lower end of the extending portion in the third direction is longer than a distance from the lower end of the extending portion to a lower end of the first insulating member in the third direction.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Sasaki Shun
• Toshioka Yoshimasa
• Yoshioka Kenta

Classifications

• H01M50/296

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

• H01M50/209

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

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/6555

  arranged between the cells · 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