Energy storage apparatus

Patent metadata

Field	Value
Publication number	US-10014507-B2
Application number	US-201514806509-A
Country	US
Kind code	B2
Filing date	Jul 22, 2015
Priority date	Jul 31, 2014
Publication date	Jul 3, 2018
Grant date	Jul 3, 2018

Abstract

An energy storage apparatus provided with a plurality of energy storage devices arranged in a row in a first direction. The energy storage apparatus includes: a bus bar connected to electrode terminals of at least two energy storage devices out of the plurality of energy storage devices; and a bus bar frame including a pressing portion that is brought into contact with the bus bar from a side opposite to the plurality of energy storage devices. The bus bar frame includes a first restriction portion with which a first member other than the bus bar frame is engaged such that a movement of the restriction portion toward the side opposite to the plurality of energy storage devices is restricted.

First claim

What is claimed is:

1. An energy storage apparatus, comprising:
a plurality of energy storage devices arranged in a row in a first direction extending in an arrangement direction of the plurality of energy storage devices;
a bus bar connected to electrode terminals of at least two energy storage devices out of the plurality of energy storage devices; and
a bus bar flame including a pressing portion that is brought into contact with the bus bar from a side opposite to the plurality of energy storage devices,
wherein the bus bar frame includes a restriction portion with which a spacer other than the bus bar frame is engaged such that a movement of the bus bar frame in a perpendicular direction to the arrangement direction of the plurality of energy storage devices is restricted,
wherein the spacer is arranged adjacently to the energy storage devices, and
wherein the spacer is not directly in contact with the bus bar.

2. The energy storage apparatus according to claim 1 , wherein the restriction portion includes:
a first restriction portion whose movement is restricted by the spacer, and
a second restriction portion whose movement is restricted by the spacer or a member other than the bus bar frame, and
wherein the first restriction portion and the second restriction portion are arranged in a second direction intersecting with the first direction, and are arranged on opposite sides with the bus bar sandwiched therebetween.

3. The energy storage apparatus according to claim 2 , wherein the first restriction portion is positioned on an end of the energy storage devices in the second direction, and
wherein the second restriction portion is positioned on a surface of the energy storage devices where the electrode terminals are arranged.

4. The energy storage apparatus according to claim 1 , wherein the spacer is arranged between the two energy storage devices arranged adjacently to each other.

5. The energy storage apparatus according to claim 1 , further comprising a restraining member which applies a restraining force in the first direction to the plurality of energy storage devices,
wherein the restriction portion is configured such that the movement of the bus bar frame is restricted by being engaged with a first projecting portion of the spacer, and
wherein the restraining member is configured such that the movement of the bus bar frame in the perpendicular direction with the first projecting portion sandwiched therebetween is restricted by being brought into contact with the first projecting portion.

6. The energy storage apparatus according to claim 5 , wherein the spacer is arranged between the two energy storage devices arranged adjacently to each other, and includes the first projecting portion.

7. The energy storage apparatus according to claim 6 , further comprising another spacer arranged adjacently to the spacer in a state where one energy storage device out of the at least two energy storage devices is sandwiched between the spacer and the another spacer,
wherein the another spacer includes a second projecting portion arranged at a position where the second projecting portion is arranged in a row with the first projecting portion of the spacer in the first direction and is engaged with the first projecting portion.

8. The energy storage apparatus according to claim 1 , wherein, in the arrangement direction of the plurality of energy storage devices, the spacer is located at an end of the plurality of the energy storage devices.

9. The energy storage apparatus according to claim 1 , wherein the bus bar frame is engaged with the spacer.

10. The energy storage apparatus according to claim 1 , wherein, in the arrangement direction of the plurality of energy storage devices, the spacer is located between the at least two energy storage devices.

11. The energy storage apparatus according to claim 1 , wherein the bus bar frame is located between the spacer and the bus bar.

12. The energy storage apparatus according to claim 1 , wherein the perpendicular direction to the arrangement direction extends in a stacking direction of the bus bar and the bus bar frame over the electrode terminals.

13. The energy storage apparatus according to claim 1 , wherein the spacer is in contact with the energy storage devices.

14. The energy storage apparatus according to claim 1 , wherein the spacer is in a direct contact with the energy storage devices.

Assignees

• Gs Yuasa Int Ltd

Inventors

• Tsuruta Shogo
• Yamamoto Yuichiro
• Tononishi Masamitsu

Classifications

• H01M10/0468 Primary

  Compression means for stacks of electrodes and separators · CPC title

• H01M50/291

  characterised by their shape · CPC title

• H01M50/507

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

• H01M50/209 Primary

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

• H01M50/264

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