Edward W Blank

US Patent:

6430031, Aug 6, 2002

Filed:

Feb 12, 2001

Appl. No.:

09/782577

Inventors:

John M. Dispennette - Oceanside CA
Edward Blank - San Diego CA
Robert W. Crawford - Menifee CA

Assignee:

Maxwell Electronic Components Group, Inc. - San Diego CA

International Classification:

H01G 900

US Classification:

361502, 361503, 361504, 361509, 361512, 361523

Abstract:

An ultrasonically bonded electrical interconnection for use in a double layer capacitor consists of ten or more current collector foils bonded together and at least one dummy collector foil bonded to the ten or more current collector foils. The at least one dummy collector foil does not function as a current collector foil as a result of the ultrasonic bonding.

US Patent:

6449139, Sep 10, 2002

Filed:

Aug 18, 1999

Appl. No.:

09/377328

Inventors:

C. Joseph Farahmandi - San Diego CA
John M. Dispennette - Oceanside CA
Edward Blank - San Diego CA
Robert W. Crawford - Menifee CA
Chenniah Nanjundiah - San Diego CA

Assignee:

Maxwell Electronic Components Group, Inc. - San Diego CA

International Classification:

H01G 900

US Classification:

361502, 361503, 361518, 29 2503

Abstract:

A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first metal impregnated carbon cloth electrode having a metal impregnated side which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first metal impregnated carbon cloth electrode and separating the first metal impregnated carbon cloth electrode from a second metal impregnated carbon cloth electrode having a metal impregnated side which faces away from the porous separator. A second current collector foil is juxtaposed against the metal impregnated side of the second metal impregnated carbon cloth electrode and is electrically coupled to the second terminal. And an electrolyte solution saturates the first and second metal impregnated carbon cloth electrodes and is substantially contained by the case and the electrically insulating hermitic seal such that an influx of impurities into the electrolyte solution is substantially inhibited by the case and the electrically insulating hermetic seal.

US Patent:

6451073, Sep 17, 2002

Filed:

May 16, 2000

Appl. No.:

09/573443

Inventors:

C. Joseph Farahmandi - San Diego CA
John M. Dispennette - Oceanside CA
Edward Blank - San Diego CA
Alan C. Kolb - Rancho Santa Fe CA

Assignee:

Maxwell Electronic Components Group, Inc. - San Diego CA

International Classification:

H01G 900

US Classification:

29 2503, 361502, 361505, 361517, 361518, 361520, 361522

Abstract:

A single cell, multi-electrode high performance double layer capacitor includes first and second flat stacks of electrodes adapted to be housed in a closeable two-part capacitor case which includes only a single electrolyte seal. Each electrode stack has a plurality of electrodes connected in parallel, with the electrodes of one stack being interleaved with the electrodes of the other stack to form an interleaved stack, and with the electrodes of each stack being electrically connected to respective capacitor terminals. A porous separator is positioned against the electrodes of one stack before interleaving to prevent electrical shorts between the electrodes. The electrodes are made by folding a compressible, low resistance, aluminum-impregnated carbon cloth, made from activated carbon fibers, around a current collector foil, with a tab of the foils of each electrode of each stack being connected in parallel and connected to the respective capacitor terminal. The height of the interleaved stack is somewhat greater than the inside height of the closed capacitor case, thereby requiring compression of the interleaved electrode stack when placed inside of the case, and thereby maintaining the interleaved electrode stack under modest constant pressure. The closed capacitor case is filled with an electrolytic solution and sealed.

US Patent:

6585152, Jul 1, 2003

Filed:

Feb 13, 2001

Appl. No.:

09/783728

Inventors:

C. Joseph Farahmandi - San Diego CA
John M. Dispennette - Oceanside CA
Edward Blank - San Diego CA
Robert W. Crawford - Menifee CA

Assignee:

Maxwell Technologies, Inc. - San Diego CA

International Classification:

H01G 900

US Classification:

228262, 2282625, 29 2503, 29843, 148527, 148558, 148688, 156 60, 156163

Abstract:

A method of making a double layer capacitor consists of the steps of: impregnating each of a plurality of carbon preforms with a metal; forming a plurality of current collector foils, each of the plurality of current collector foils having a tab portion and a paddle portion; forming a plurality of electrodes by positioning one of the plurality of carbon preforms against respective paddle portions of each of the plurality of current collector foils, wherein each of the plurality of electrodes comprises one of the plurality of current collector foils and one of the plurality of carbon preforms; stacking each of the plurality of electrodes such that tab portions of adjacent ones of the plurality of current collector foils are offset, thereby forming an electrode stack; interposing respective porous separator portions between each of the plurality of electrodes, wherein the porous separator portions function as electrical insulators between the adjacent ones of the plurality of electrodes preventing electrical shorting against each other; applying a modest constant pressure against the electrode stack; saturating the electrode stack with an electrolytic solution; and maintaining the electrode stack immersed within the electrolytic solution.

US Patent:

6842330, Jan 11, 2005

Filed:

Sep 6, 2002

Appl. No.:

10/236793

Inventors:

C. Joseph Farahmandi - San Diego CA, US
John M. Dispennette - Oceanside CA, US
Edward Blank - San Diego CA, US
Robert W. Crawford - Menifee CA, US
Chenniah Nanjundiah - San Diego CA, US

Assignee:

Maxwell Technologies, Inc. - San Diego CA

International Classification:

H01G 900
H01G 202
H01G 906

US Classification:

361502, 361503, 361518

Abstract:

A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first electrode comprising carbon which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first electrode comprising carbon and separating the first electrode from a second electrode comprising carbon. A second current collector foil is juxtaposed against a side of the second electrode and is electrically coupled to the second terminal. And an electrolyte solution saturates the first and second electrodes comprising carbon and is substantially contained by the case and the electrically insulating hermitic seal such that an influx of impurities into the electrolyte solution is substantially inhibited by the case and the electrically insulating hermetic seal.

US Patent:

7090706, Aug 15, 2006

Filed:

Mar 31, 2004

Appl. No.:

10/815260

Inventors:

C. Joseph Farahmandi - San Diego CA, US
John M. Dispennette - Oceanside CA, US
Edward Blank - San Diego CA, US
Robert W. Crawford - Menifee CA, US
Chenniah Nanjundiah - San Diego CA, US

Assignee:

Maxwell Technologies, Inc. - San Diego CA

International Classification:

H01G 9/00
B05D 5/12

US Classification:

29 2503, 427 80

Abstract:

A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first electrode comprising carbon which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first electrode comprising carbon and separating the first electrode from a second electrode comprising carbon. A second current collector foil is juxtaposed against a side of the second electrode and is electrically coupled to the second terminal. And an electrolyte solution saturates the first and second electrodes comprising carbon and is substantially contained by the case and the electrically insulating hermitic seal such that an influx of impurities into the electrolyte solution is substantially inhibited by the case and the electrically insulating hermetic seal.

US Patent:

7116545, Oct 3, 2006

Filed:

Mar 9, 2005

Appl. No.:

11/076238

Inventors:

C. Joseph Farahmandi - San Diego CA, US
John M. Dispennette - Oceanside CA, US
Edward Blank - San Diego CA, US
Robert W. Crawford - Menifee CA, US
Chenniah Nanjundiah - San Diego CA, US

Assignee:

Maxwell Technologies, Inc. - San Diego CA

International Classification:

H01G 9/00

US Classification:

361502, 361504, 361508, 361512, 361523, 361528, 29 2503

Abstract:

A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first electrode comprising carbon which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first electrode comprising carbon and separating the first electrode from a second electrode comprising carbon. A second current collector foil is juxtaposed against a side of the second electrode and is electrically coupled to the second terminal. And an electrolyte solution saturates the first and second electrodes comprising carbon and is substantially contained by the case and the electrically insulating hermitic seal such that an influx of impurities into the electrolyte solution is substantially inhibited by the case and the electrically insulating hermetic seal.

US Patent:

7407520, Aug 5, 2008

Filed:

Aug 10, 2006

Appl. No.:

11/503322

Inventors:

C. Joseph Farahmandi - San Diego CA, US
John M. Dispennette - Oceanside CA, US
Edward Blank - San Diego CA, US
Robert W. Crawford - Menifee CA, US
Chenniah Nanjundiah - San Diego CA, US

Assignee:

Maxwell Technologies, Inc. - San Diego CA

International Classification:

H01G 9/00

US Classification:

29 2503, 438210, 438238, 438239, 361309, 361328, 361502, 257E21008, 257E21011

Abstract:

A long life double layer capacitor and method of making the same including a case and a first terminal with an electrically insulating hermitic seal interposed between the first terminal and the case. A first current collector foil is electrically coupled to an interior portion of the first terminal and a first electrode comprising carbon which is juxtaposed against the first current collector foil. A porous separator is then juxtaposed against the first electrode comprising carbon and separating the first electrode from a second electrode comprising carbon. A second current collector foil is juxtaposed against a side of the second electrode and is electrically coupled to the second terminal. And an electrolyte solution saturates the first and second electrodes comprising carbon and is substantially contained by the case and the electrically insulating hermitic seal such that an influx of impurities into the electrolyte solution is substantially inhibited by the case and the electrically insulating hermetic seal.