Edward A Tate

US Patent:

20030076109, Apr 24, 2003

Filed:

Jul 22, 2002

Appl. No.:

10/200604

Inventors:

Mark Verbrugge - Troy MI, US
Edward Tate - Grand Blanc MI, US
Damon Frisch - Troy MI, US
Ramona Ying - Rochester Hills MI, US
Brian Koch - Berkley MI, US
Shawn Sarbacker - Royal Oak MI, US

International Classification:

G01N027/416
H02J007/00

US Classification:

324/427000, 320/134000

Abstract:

A method for determining state of charge (SOC) of a battery system based upon an equivalent circuit of the battery system. A potential and resistance of the equivalent circuit are computed. The method uses a least squares regression means, and includes: providing a plurality of data points as a starting point based upon determinations including measurement or prior computation, wherein the determinations include a determination of a voltage of the battery system; weighting the plurality of data points; and computing values of the resistance and potential based upon weighted data points using recursive formulas, wherein only a state at a previous time is reflected respectively.

US Patent:

20040162683, Aug 19, 2004

Filed:

Feb 18, 2003

Appl. No.:

10/368869

Inventors:

Mark Verbrugge - Troy MI, US
Edward Tate - Grand Blanc MI, US
Damon Frisch - Troy MI, US
Brian Koch - Berkley MI, US

International Classification:

G06F019/00

US Classification:

702/064000

Abstract:

A method for determining a voltage based or current based state of charge (SOC) and state of health (SOH) of a battery system is provided. The method includes: providing a model of the battery system including an equivalent circuit having both low frequency and high frequency elements; establishing a plurality of functional relationships comprising relationship of the equivalent circuit with SOC; reducing at least part of the plurality of functional relationships into a set of time segmented recursive functional relationships, wherein a state at a first time t can be modeled by a functional presentation of a state at a second time t-t that occurred before the first time t; and computing a set of data points based upon the set of time segmented recursive functional relationships using a matrix for operation in matrix algebra.

US Patent:

20070159137, Jul 12, 2007

Filed:

Jan 31, 2007

Appl. No.:

11/669196

Inventors:

Mark Verbrugge - Troy MI, US
Edward Tate - Grand Blanc MI, US
Damon Frisch - Troy MI, US
Brian Koch - Berkley MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

H02J 7/00

US Classification:

320132000

Abstract:

A method for determining a voltage based or current based state of charge (SOC) and state of health (SOH) of a battery system is provided. The method includes: providing a model of the battery system including an equivalent circuit having both low frequency and high frequency elements; establishing a plurality of functional relationships comprising relationship of the equivalent circuit with SOC; reducing at least part of the plurality of functional relationships into a set of time segmented recursive functional relationships, wherein a state at a first time t can be modeled by a functional presentation of a state at a second time t−Δt that occurred before the first time t; and computing a set of data points based upon the set of time segmented recursive functional relationships using a matrix for operation in matrix algebra.

US Patent:

20080125265, May 29, 2008

Filed:

Nov 15, 2007

Appl. No.:

11/940533

Inventors:

Brendan M. Conlon - Rochester Hills MI, US
Alan G. Holmes - Clarkston MI, US
Edward D. Tate - Grand Blanc MI, US
Eric M. Rask - Royal Oak MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

F16H 3/72
G06F 19/00

US Classification:

475 5, 701 54, 903915, 903940

Abstract:

A hybrid powertrain system for a vehicle includes an engine and a transmission. The transmission includes a transmission input member, first and second electric machines, first and second planetary gear sets, and a plurality of selectively engageable torque transfer devices enabling configuring the powertrain in variously to operate in electric drive, electrically variable, fixed gear and neutral charging operating states.

US Patent:

20080125928, May 29, 2008

Filed:

Nov 15, 2007

Appl. No.:

11/940517

Inventors:

Brendan M. CONLON - Rochester Hills MI, US
Alan G. HOLMES - Clarkston MI, US
Edward D, TATE - Grand Blanc MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS, INC. - DETROIT MI

International Classification:

B60L 11/00
G01C 21/02

US Classification:

701 22, 701213, 903940

Abstract:

A vehicle has a powertrain including an engine and at least one electric machine. A method for maximizing range capability of the vehicle while operating in an electric vehicle operating state includes determining an incipient electric vehicle operating state of the powertrain, setting a preferred charge/discharge rate of an electric energy storage device to a maximum charging rate, and controlling the powertrain to an operating state including an engine state that is ON to effect charging the electrical energy storage device based on the maximum charging rate.