Energy storage device

• US 20070195487A1
• Filed: 04/25/2007
• Published: 08/23/2007
• Est. Priority Date: 12/06/2000
• Status: Active Grant

• Current Assignee: Alina Sloan, David James, Richard Stephens, Stephen Wilson
• Original Assignee: Alina Sloan, David James, Richard Stephens, Stephen Wilson
• Inventors: Stephens, Richard, Wilson, Stephen, James, David, Sloan, Alina
• Granted Patent: US 7,554,790 B2
• Time in Patent Office: Days
• US Class Current: 361/502
• CPC Class Codes: H01G 11/12 Stacked hybrid or EDL capacitors
• CPC Class Codes: H01G 11/52 Separators
• CPC Class Codes: H01G 11/74 Terminals, e.g. extensions of current collectors
• CPC Class Codes: H01G 11/76 specially adapted for integration in multiple or stacked hybrid or EDL capacitors
• CPC Class Codes: H01G 11/82 Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations
• CPC Class Codes: H01G 2/06 specially adapted for mounting on a printed-circuit support
• CPC Class Codes: H01G 9/10 Sealing, e.g. of lead-in wires
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 6/10 with wound or folded electrodes
• CPC Class Codes: H01M 6/42 Grouping of primary cells into batteries H01M6/40 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 60/13 Energy storage using capacitors
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A surface mount energy storage device in the form of a supercapacitor (1) includes a generally rectangular folded prismatic housing (2) and two energy storage elements (not shown) that are sealingly contained within the housing (2) and which are connected in series. A mount, in the form of an integrally formed tinned metal frame (3), extends about and captively retains housing (2) in the folded configuration shown. Two terminals, in the form of elongate contacts (4, 5) extend from the energy storage elements and terminate outside housing (2) for allowing external electrical connection to the elements.

Claims

1. An electrode pair for a supercapacitor, the electrode pair including:

a first sheet electrode having a conductive energy storage element with an outer surface and a separator sheet being captively retained in abutment with the surface; and

a second sheet electrode having a conductive energy storage element with an outer surface that is abutted with the separator sheet whereby the elements are maintained in a spaced apart configuration.

2. An electrode for an energy storage device, the electrode including:

a conductive energy storage element having an outer surface; and

a separator being retained in abutment with the surface under tension.

3. An electrode for an energy storage device, the electrode including:

a conductive energy storage element having at least one edge; and

a separator having two opposed faces that sandwich the element and that are abutted and secured together at the edge.

4. An electrode according to claim 3 wherein the separator includes two flexible sheets each of which define one of the opposed faces.

5. An electrode according to claim 4 wherein the sheets are porous.

6. An electrode according to claim 3 wherein the opposed faces, in use, are maintained in tensioned abutment against the second electrode.

7. An electrode for an energy storage device, the electrode being formed from a continuous conductive sheet having a first face, a second face opposite the first face and a plurality of openings extending between the faces, the electrode including:

a first energy storage element defined by or mounted to some or all of the first face; and

a separator extending across the first element and at least some of the second face, the separator being attached to itself through the openings for maintaining the separator adjacent to the sheet.

8. An electrode according to claim 7 including a second energy storage element defined by or mounted to at least part of the second face, wherein the separator extends across the second element.

9. An electrode for an energy storage device, the electrode being formed from a continuous conductive sheet having a first face, a second face spaced apart from the first face and a plurality of openings extending between the faces, the electrode including:

a first energy storage element defined by or mounted to some or all of the first face;

a second energy storage element defined by or mounted to some or all of the second face; and

a separator extending across the first and the second elements and being attached to itself through the openings.

10. An electrode according to claim 9 wherein the sheet extends longitudinally and the openings are transverse slots.

11. An electrode according to claim 9 wherein the slots are longitudinally spaced apart and parallel.

12. An electrode according to claim 11 wherein each slot is equally longitudinally spaced apart from the adjacent slots.

13. An electrode according to claim 9 wherein the sheet includes two transversely spaced apart longitudinal edges and the slots extend from one edge and terminate adjacent to the other edge.

14. An electrode according to claim 9 wherein the sheet includes two transversely spaced apart longitudinal edges and the slots extend inwardly from both edges and terminate adjacent to each other.

15. An electrode according to claim 9 wherein the sheet includes two transversely spaced apart longitudinal edges and the slots terminate adjacent to both edges.