Energy storage apparatus

Patent metadata

Field	Value
Publication number	US-10873064-B2
Application number	US-201816125216-A
Country	US
Kind code	B2
Filing date	Sep 7, 2018
Priority date	Sep 12, 2017
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

An energy storage apparatus includes: a main part; a conductive opposedly facing member disposed to opposedly face the main part; and an insulating member disposed between the main part and the opposedly facing member. The opposedly facing member includes an opposedly facing portion a part of which overlaps with the main part. The opposedly facing portion includes an end surface which overlaps with the main part, the end surface facing upwardly. The insulating member includes: a covering portion covering a surface of the opposedly facing portion directed toward a main part; and a seal portion extending from the covering portion toward the main part. The covering portion includes an end portion disposed at a position which agrees with the end surface or at a position outside the end surface in a direction orthogonal to the end surface. The seal portion extends from the end portion toward the main part.

First claim

What is claimed is:

1. An energy storage apparatus, comprising:
a main part including at least one energy storage device;
a conductive opposedly facing member disposed so as to opposedly face the main part; and
an insulating member disposed between the main part and the opposedly facing member,
wherein the opposedly facing member includes an opposedly facing portion where at least a part of the opposedly facing portion overlaps with the main part,
wherein the opposedly facing portion includes an end surface disposed at a position where the end surface overlaps with the main part, the end surface facing upwardly in a state where the energy storage apparatus is installed,
wherein the insulating member includes:
a covering portion covering at least a surface of the opposedly facing portion directed toward the main part; and
a seal portion extending from the covering portion toward the main part so as to close a gap formed between the main part and the covering portion,

wherein the covering portion includes an end portion disposed at a position which agrees with the end surface of the opposedly facing portion or at a position outside the end surface in a direction orthogonal to the end surface, and
wherein the seal portion extends from the end portion of the covering portion toward the main part.

2. The energy storage apparatus according to claim 1 , wherein the insulating member further includes a rib which extends from the covering portion toward a side opposite to the seal portion and opposedly faces the end surface of the opposedly facing portion, and
wherein the rib extends from the end portion of the covering portion or from a position between the end portion of the covering portion and the end surface of the opposedly facing portion in the direction orthogonal to the end surface.

3. The energy storage apparatus according to claim 2 , wherein the rib includes a proximal end connected to the covering portion and a distal end on a side opposite to the proximal end, and
wherein the distal end extends to outside of the opposedly facing portion.

4. The energy storage apparatus according to claim 3 , wherein the rib includes a first surface which opposedly faces the end surface of the opposedly facing portion, and a second surface disposed on a side opposite to the first surface in the direction orthogonal to the end surface, and
wherein the second surface is formed so as to be inclined downwardly from the proximal end to the distal end.

5. The energy storage apparatus according to claim 1 , wherein the at least one energy storage device of the main part includes a plurality of energy storage devices arranged in a first direction, and
wherein the seal portion extends from the end portion of the covering portion toward the main part in a second direction orthogonal to the first direction.

6. The energy storage apparatus according to claim 1 , wherein the seal portion extends from the end portion of the covering portion toward the main portion such that a space where a liquid droplet is pooled is not formed between the main part and the covering member.

7. The energy storage apparatus according to claim 1 , wherein the seal portion extends from the end portion of the covering portion toward the main portion to completely seal a space between the main part and the covering member.

8. The energy storage apparatus according to claim 1 , wherein, in the direction orthogonal to the end surface, the end portion is disposed at the position which overlaps with the end surface of the opposedly facing portion.

9. The energy storage apparatus according to claim 1 , wherein, in the direction orthogonal to the end surface, the end portion is disposed at the position outside the end surface.

10. The energy storage apparatus according to claim 1 , wherein the at least one energy storage device of the main part includes a plurality of energy storage devices arranged in a first direction, and
wherein an entirety of the seal portion extends, in a second direction orthogonal to the first direction, from the end portion of the covering portion toward the main part.

11. The energy storage apparatus according to claim 10 , wherein the insulating member further includes a rib which extends from the covering portion in an opposite direction to the second direction.

12. The energy storage apparatus according to claim 11 , wherein an entirety of the rib extends in the second direction.

13. The energy storage apparatus according to claim 1 , wherein the insulating member further includes a rib which extends from the covering portion in an opposite direction to a direction that the seal portion extends toward the main part.

14. The energy storage apparatus according to claim 1 , wherein the insulating member further includes a rib which extends, from a position between the end portion of the covering portion and the end surface of the opposedly facing portion, in an opposite direction to a direction that the seal portion extends toward the main part.

15. The energy storage apparatus according to claim 1 , wherein the at least one energy storage device of the main part includes a plurality of energy storage devices arranged in a first direction,
wherein the seal portion includes a proximal end connected to the covering portion and a distal end on a side opposite to the proximal end, the seal portion extending from the proximal end to the distal end in a second direction orthogonal to the first direction.

16. The energy storage apparatus according to claim 15 , wherein the seal portion continuously extends from the proximal end to the distal end in a second direction orthogonal to the first direction.

17. An energy storage apparatus, comprising:
a main part including a plurality of energy storage devices;
opposedly facing member-disposed so as to opposedly face the main part; and
an insulating member disposed between the main part and the opposedly facing member,
wherein the opposedly facing member includes an opposedly facing portion that overlaps with the main part,
wherein the opposedly facing portion includes an end surface disposed at a position where the end surface overlaps with the main part,
wherein the insulating member includes:
a covering portion covering at least a surface of the opposedly facing portion directed toward the main part; and
a seal portion extending from the covering portion toward the main part so as to close a gap between the main part and the covering portion, and

wherein the seal portion extends from an end portion of the covering portion toward the main part in a direction orthogonal to a stacking direction of the plurality of energy storage devices.

18. The energy storage apparatus according to claim 17 , wherein the seal portion extends from the end portion of the covering portion toward the main portion such that a space where a liquid droplet is pooled is not formed between the main part and the covering member.

19. The energy storage apparatus according to claim 17 , wherein the seal portion extends from the end portion of the covering portion toward the main portion to completely seal a space between the main part and the covering member.

20. The energy storage apparatus according to claim 17 , wherein the seal portion includes a proximal end connected to the covering portion and a distal end on a side opposite to the proximal end, the seal portion continuously extending from the proximal end to the distal end in the direction orthogonal to the stacking direction of the plurality of

Assignees

• Blue Energy Co Ltd
• Honda Motor Co Ltd

Inventors

• Nishimura Yosuke
• Yoshioka Kenta

Classifications

• H01M50/264

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

• H01M50/209

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

• H01M50/24 Primary

  adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) · CPC title

• H01G11/80

  Gaskets; Sealings · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title