Energy storage device

Patent metadata

Field	Value
Publication number	US-10693120-B2
Application number	US-201616070007-A
Country	US
Kind code	B2
Filing date	Jul 26, 2016
Priority date	Jan 13, 2016
Publication date	Jun 23, 2020
Grant date	Jun 23, 2020

Abstract

Provided is an energy storage device which can easily fix plates of an electrode assembly to a container. An energy storage device ( 10 ) includes: an electrode assembly ( 500 ) formed by stacking plates; and a container ( 100 ) which accommodates the electrode assembly ( 500 ), wherein the container ( 100 ) includes: a body portion ( 200 ); and a conductive terminal portion ( 300 ) connected to the body portion ( 200 ), and the terminal portion ( 300 ) includes a first portion ( 310 ) and a second portion ( 320 ) which sandwich the plates therebetween.

First claim

The invention claimed is:

1. An energy storage device comprising:
an electrode assembly formed of stacked plates; and
a container which accommodates the electrode assembly, wherein the container includes:
a body portion having an open end; and
a conductive terminal portion connected to the body portion, wherein the terminal portion includes a first portion and a second portion which sandwich end portions of the stacked plates therebetween, and wherein the conductive terminal portion closes the open end.

2. The energy storage device according to claim 1 , wherein the electrode assembly includes an element formed by stacking a plurality of plates, the first portion has an opening portion corresponding to the element, and the second portion is configured to sandwich the element inserted through the opening portion cooperatively with the first portion.

3. The energy storage device according to claim 2 , wherein the electrode assembly includes a plurality of elements, the first portion has a plurality of opening portions corresponding to the plurality of elements, and the second portion is configured to sandwich the plurality of elements inserted through the plurality of opening portions cooperatively with the first portion.

4. The energy storage device according to claim 2 , wherein the opening portion is formed by opening a part of a periphery of the first portion.

5. The energy storage device according to claim 4 , wherein the first portion has a comb shape.

6. The energy storage device according to claim 2 , wherein a width of the opening portion is increased gradually in a direction toward an inside of the container.

7. The energy storage device according to claim 1 , wherein the terminal portion includes a welded portion where the first portion, the second portion and the plates are welded to each other.

8. The energy storage device according to claim 1 , wherein the first portion has an insulating portion on an inner side of the container.

9. The energy storage device according to claim 8 , wherein width of the insulating portion is narrowed gradually in a direction toward an inside of the container.

10. The energy storage device according to claim 1 , wherein the first portion includes an opening in which the stacked plates are inserted.

11. The energy storage device according to claim 10 , wherein the stacked plates are bent onto a solid portion of the first portion adjacent the opening.

12. The energy storage device according to claim 11 , wherein the second portion is clamped down on the stacked plates.

13. The energy storage device according to claim 1 , wherein the first portion is sandwiched between the second portion and the body portion.

14. The energy storage device according to claim 1 , wherein the stacked plates include main portions housed by the body portion of the container, wherein the end portions extend from the main portions, and wherein at least parts of the end portions are substantially perpendicular to the main portions.

15. The energy storage device according to claim 1 , wherein each of the stacked plates includes a foil and an active material applied to the foil.

16. The energy storage device according to claim 15 , wherein each foil has a thickness between 5 μm to 20 μm.

Assignees

• Lithium Energy & Power Gmbh & Co Kg
• Bosch Gmbh Robert

Inventors

• Wilka Marcel
• Takebayashi Naoto

Classifications

• H01G11/26 Primary

  characterised by their structure, e.g. multi-layered, porosity or surface features · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title

• H01M50/543

  Terminals · CPC title

• H01M50/54 Primary

  Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title