Energy storage device

• US 7,554,790 B2
• Filed: 04/25/2007
• Issued: 06/30/2009
• Est. Priority Date: 12/06/2000
• Status: Expired due to Term

• Current Assignee: Cap-Xx Ltd.
• Original Assignee: Cap-Xx Ltd.
• Inventors: James, David Albert, Sloan, Alina Kay, Wilson, Stephen Robert, Stephens, Richard Michael
• Primary Examiner(s): Ha; Nguyen T
• Application Number:
  US11/790,374
• Publication Number:
  US 20070195487A1
• Time in Patent Office: 797 Days
• Field of Search: 361/502, 361503-504, 361508-512, 361302-305, 361516-519, 361523-528
• 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. A component for manufacture of one or more energy storage devices, the component comprising:

a continuous conductive sheet having a first face, a second face opposite to and spaced apart from the first face and a plurality of openings extending through the sheet between the faces, wherein the component is adapted to be cut along the openings to provide discrete sub-components to be used in manufacturing of one or more enemy devices;

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 opposite the first energy storage element; and

a separator that includes two separator sheets which respectively extend across the first and the second elements, the two separator sheets being attached to each other through the openings.

2. The component according to claim 1 wherein the sheet extends longitudinally and the openings are transverse slots.

3. The component according to claim 2, wherein the slots are longitudinally spaced apart and parallel.

4. The component according to claim 3 wherein each slot is equally longitudinally spaced apart from the adjacent slots.

5. The component according to claim 2, wherein the sheet includes two transversely spaced apart longitudinal edges and the slots extend from one edge and terminate adjacent to the other edge.

6. The component according to claim 2, wherein the sheet includes two transversely spaced apart longitudinal edges and the slots extend inwardly from both edges and terminate adjacent to each other.

7. The component according to claim 2, wherein the sheet includes two transversely spaced apart longitudinal edges and the slots terminate adjacent to both edges.

8. The component according to claim 2, wherein the sheet includes two transversely spaced apart longitudinal edges and the slots extend between those edges thereby to segment the sheet into discrete portions.

9. The component according to claim 1, wherein the conductive sheet is formed from a pair of back-to-back sheets.

10. The component according to claim 9, wherein the pair of back-to-back sheets each carries a respective outwardly-facing coating defining the first and second energy storage elements.