James E Sherrill

US Patent:

7208928, Apr 24, 2007

Filed:

Mar 16, 2001

Appl. No.:

10/221424

Inventors:

Dragan Danilo Nebrigic - Carlsbad CA, US
Milan Marcel Jevtitch - Cincinnati OH, US
Vladimir Gartstein - Cincinnati OH, US
James Vig Sherrill - Oak Ridge TN, US
Nicholas Busko - Oak Ridge TN, US
Peter Hansen - Knoxville TN, US

Assignee:

The Board of Trustrees of the University of Illinois - Chicago IL

International Classification:

G05F 1/40

US Classification:

323285, 323224, 323284

Abstract:

A power converter for coupling an energy source to a load device comprising a selectively coupled output stage to deliver energy from an energy source to a load device, a controller coupled to the output stage, an output stage, a capacitive element coupled to the output terminals, a rectifying element, and a switch responsive to a control signal from the controller. The rectifying element and switch are coupled to the inductive and capacitive elements. The controller is responsive to input signals for generating the control signal to open the switch in a first state and close the switch in a second state. The input signals to the controller produce one or more output voltages across the output terminals, an input voltage across the input terminals, a selectable reference voltage and a feedback signal measured with respect to the inductive element.

US Patent:

20070212596, Sep 13, 2007

Filed:

Mar 21, 2007

Appl. No.:

11/726101

Inventors:

Dragan Nebrigic - Carlsbad CA, US
Milan Jevtitch - Cincinnati OH, US
Vladimir Gartstein - Cincinnati OH, US
William Milam - Knoxville TN, US
James Sherrill - Oak Ridge TN, US
Nicholas Busko - Oak Ridge TN, US
Peter Hansen - Knoxville TN, US

International Classification:

H01M 10/42
H01M 10/44
H01M 10/50

US Classification:

429061000, 429062000

Abstract:

The invention concerns single and multiple cell lithium ion batteries. Embodiments of the invention concern single and multiple cell lithium ion batteries with built-in controllers that monitor the cell or cells and provide a safety disconnect when certain monitored conditions are detected by the controller. Preferred embodiment single and multiple cell lithium ion batteries have their cell or cells within a container having a positive terminal and a negative terminal. The built-in controller monitors the cell or cell for each of the following conditions: over temperature, short-circuit, overcharge, and over-discharge and the controller provides a safety disconnect when one of the monitored conditions exist. A multiple cell lithium ion battery of embodiments of the invention include a built-in controller that monitors the temperature of the cells and provides a safety disconnect that electronically disconnects all of the cells when at least one of the cells exceeds a predetermined temperature, or a controller that monitors the state of charge of each of the cells and individually controls the charge cycle of each of the cells, or a controller that monitors the temperature of the cells and to provides a safety disconnect when at least one of the cells exceeds a predetermined temperature.