Paul J Nelson

US Patent:

6858345, Feb 22, 2005

Filed:

Apr 9, 2002

Appl. No.:

10/118788

Inventors:

Khalil Amine - Downers Grove IL, US
Paul A. Nelson - Wheaton IL, US

Assignee:

The University of Chicago - Chicago IL

International Classification:

H01M006/42

US Classification:

429149, 429152, 429153, 429161

Abstract:

A high power bipolar battery, such as a high power lithium polymer battery is provided. The bipolar battery includes a plurality of multiple cell assemblies. The plurality of multiple cell assemblies is connected in series to form the high power bipolar battery. Each of the plurality of multiple cell assemblies includes a rigid core with a bipolar cell stack of multiple cells wound together around the rigid core to produce a large active cell area. The wound bipolar cell stack includes a positive battery connection and a negative battery connection. A container surrounds the bipolar cell stack. A positive terminal carried by the container is connected to the positive battery connection. A negative terminal carried by the container is spaced apart from the positive terminal and connected to the negative battery connection. A state-of-charge connector carried by the container is spaced apart from the positive and negative terminals. The state-of-charge connector include multiple conductors, each connected to a respective one of the multiple cells.

US Patent:

20100006205, Jan 14, 2010

Filed:

Jul 6, 2009

Appl. No.:

12/498307

Inventors:

PETER D. McCowin - Enumclaw WA, US
Mark C. Boberg - Bellevue WA, US
Paul E. Nelson - Chicago IL, US

International Classification:

B32B 37/02
G05G 15/00

US Classification:

156 60, 156350

Abstract:

A composite part is formed by a composite tape application machine that lays up a plurality of tapes on a substrate. The lateral position of the tapes may be adjusted as the tapes are being laid up.

US Patent:

51943433, Mar 16, 1993

Filed:

Oct 9, 1990

Appl. No.:

7/594485

Inventors:

Ira D. Bloom - Bolingbrook IL
Paul A. Nelson - Wheaton IL
Donald R. Vissers - Naperville IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01M 400

US Classification:

429218

Abstract:

A method of fabricating an electrode for use in a metal chloride battery and an electrode are provided. The electrode has relatively larger and more uniform pores than those found in typical electrodes. The fabrication method includes the steps of mixing sodium chloride particles selected from a predetermined size range with metal particles selected from a predetermined size range, and then rigidifying the mixture. The electrode exhibits lower resistivity values of approximately 0. 5. OMEGA. cm. sup. 2 than those resistivity values of approximately 1. 0-1. 5. OMEGA. cm. sup. 2 exhibited by currently available electrodes.

US Patent:

48513067, Jul 25, 1989

Filed:

Jul 18, 1988

Appl. No.:

7/219740

Inventors:

Thomas D. Kaun - New Lenox IL
Paul A. Nelson - Wheaton IL

Assignee:

Arch Development Corporation - Argonne IL

International Classification:

H01M 440

US Classification:

429112

Abstract:

A molten salt electrolyte battery having an increased overcharge tolerance employs a negative electrode with two lithium alloy phases of different electrochemical potential, one of which allows self-discharge rates which permits battery cell equalization.

US Patent:

48493090, Jul 18, 1989

Filed:

Aug 1, 1988

Appl. No.:

7/227021

Inventors:

Laszlo Redey - Downers Grove IL
Paul A. Nelson - Wheaton IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01M 1044
H01M 1039

US Classification:

429 50

Abstract:

In a lithium-alloy/metal sulfide high temperature electrochemical cell, cell damage caused by overcharging is avoided by providing excess lithium in a high-lithium solubility phase alloy in the negative electrode and a specified ratio maximum of the capacity of a matrix metal of the negative electrode in the working phase to the capacity of a transition metal of the positive electrode. In charging the cell, or a plurality of such cells in series and/or parallel, chemical transfer of elemental lithium from the negative electrode through the electrolyte to the positive electrode provides sufficient lithium to support an increased self-charge current to avoid anodic dissolution of the positive electrode components above a critical potential. The lithium is subsequently electrochemically transferred back to the negative electrode in an electrochemical/chemical cycle which maintains high self-discharge currents on the order of 3-15 mA/cm. sup. 2 in the cell to prevent overcharging.

US Patent:

43060048, Dec 15, 1981

Filed:

May 9, 1980

Appl. No.:

6/148312

Inventors:

Thomas D. Kaun - New Lenox IL
Paul A. Nelson - Wheaton IL
William E. Miller - Naperville IL

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

H01M 216
H01M 218

US Classification:

429112

Abstract:

An electrode structure for a secondary electrochemical cell includes an outer enclosure defining a compartment containing electrochemical active material. The enclosure includes a rigid electrically conductive metal sheet with perforated openings over major side surfaces. The enclosure can be assembled as first and second trays each with a rigid sheet of perforated electrically conductive metal at major side surfaces and normally extending flanges at parametric margins. The trays can be pressed together with moldable active material between the two to form an expandable electrode. A plurality of positive and negative electrodes thus formed are arranged in an alternating array with porous frangible interelectrode separators within the housing of the secondary electrochemical cell.