Kris S Sevel

US Patent:

20130338862, Dec 19, 2013

Filed:

Jun 13, 2012

Appl. No.:

13/495198

Inventors:

John T. Guerin - Bloomfield MI, US
Kris S. Sevel - Rochester Hills MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B60W 10/26
B60W 20/00
H02J 7/04

US Classification:

701 22, 320153, 903930, 180 65265, 180 6529

Abstract:

A method of providing an electrical charge to a vehicle traction battery using a power inverter module includes sensing a temperature of the power inverter module and sensing a temperature of the traction battery. From the sensed temperatures, an engine control unit may determine an expected voltage oscillation amplitude of the electrical charge. This amplitude may be used to calculate a maximum allowable nominal voltage of the electrical charge by subtracting the expected voltage oscillation amplitude from a maximum allowable voltage of the traction battery. The maximum allowable nominal voltage of the electrical charge may then be used to limit the available power provided to the traction battery by the power inverter module.

US Patent:

20200235662, Jul 23, 2020

Filed:

Jan 22, 2019

Appl. No.:

16/253530

Inventors:

- Detroit MI, US
Kris Sevel - Rochester Hills MI, US
Alireza Fatemi - Canton MI, US

International Classification:

H02M 3/155
B60R 16/02
H05K 7/20

Abstract:

In one example implementation according to aspects of the present disclosure, a DC-to-DC converter for transmitting electricity from a first power device at a first voltage and current combination to a second power device at a second voltage and current combination is provided. The DC-to-DC converter comprises a first electrical conductor having a first end and a second end and a second electrical conductor having a third end and a fourth end. The first end and the third end are electrically coupled to the first power device and the second end and the fourth end are electrically coupled to the second power device. The first electrical conductor and the second electrical conductor together provide circuit inductance substantially equivalent to and in place of an inductor having a circular winding.

US Patent:

20200055404, Feb 20, 2020

Filed:

Aug 14, 2018

Appl. No.:

16/102802

Inventors:

- Detroit MI, US
Shifang Li - Shelby Township MI, US
Kris Sevel - Rochester Hills MI, US
Russell K. Steele - Clinton Township MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B60L 11/18

Abstract:

An electrical system includes cables, a DC charge connector, first and second battery modules, a splice device, and a controller. Each battery module has first, second, third, and fourth electrical connectors receiving a respective one of the cables. The battery modules are connected to each other via the cables, and further have first, second, third, and fourth switches that connect battery cell strings to one or more connectors. The charge connector is connected to one of the cables between the first electrical connectors. The splice device connects the charge connector to the first connector of the first battery module and to a pair of the cables. A charging current may be split between the battery modules. The controller selectively establishes parallel charging, parallel drive, and separate drive and charging modes for each battery module. The system may have an independent drive mode.

US Patent:

20180029479, Feb 1, 2018

Filed:

Jul 27, 2016

Appl. No.:

15/220721

Inventors:

- Detroit MI, US
Steven V. Wybo - Grosse Pointe Park MI, US
Kris S. Sevel - Rochester Hills MI, US
Charles J. Swan - Farmington Hills MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B60L 11/02
H02M 3/335
B60L 11/18

Abstract:

A topology for electric power distribution in a vehicle includes a high-voltage bus connected to a DC-DC electric power converter that is connected to a low-voltage DC load. The DC-DC electric power converter includes a high-voltage switching circuit, a transformer, and a low-voltage rectifier. The high-voltage switching circuit includes first and second switches arranged in series between positive and negative legs of the high-voltage electric power bus at a first node that connects to a leg of an inductor of the transformer. A controller receives a command to discharge the high-voltage electric power bus, and in response, controls a first gate circuit to operate a first switch in a linear mode, and controls a second gate circuit to operate a second switch in a pulsewidth-modulated mode. A duty cycle for the pulsewidth-modulated operation of the second switch is determined based upon the magnitude of electric current.

US Patent:

20160039336, Feb 11, 2016

Filed:

Aug 8, 2014

Appl. No.:

14/455065

Inventors:

- Detroit MI, US
KRIS S. SEVEL - ROCHESTER HILLS MI, US
STEPHEN M. CICHY - LAPEER MI, US
RYAN A. CHURCH - OXFORD MI, US

International Classification:

B60Q 1/46
B60Q 1/00
B60Q 1/30

Abstract:

A vehicle includes a plurality of lamps disposed on a rear portion of the vehicle, a user-actuatable hazard light control component (e.g. a turn-signal stalk) having a plurality of states, and a hazard lamp controller communicatively coupled to the plurality of lamps, the user-actuable hazard light control component, and the user-actuatable hazard light controller. The hazard lamp controller is configured to illuminate the plurality of lamps in accordance with a lighting pattern responsive to the state of the user-actuatable hazard light control component.

US Patent:

20140118868, May 1, 2014

Filed:

Oct 31, 2012

Appl. No.:

13/665809

Inventors:

- Detroit MI, US
WILLIAM T. IVAN - SHELBY TOWNSHIP MI, US
BRYAN M. LUDWIG - WEST BLOOMFIELD MI, US
KRIS S. SEVEL - ROCHESTER HILLS MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

H02H 9/08
H02H 7/122

US Classification:

361 42, 363 5601

Abstract:

Systems and methods for a fault protection are provided that can be implemented in a hybrid electric vehicle (HEV) to limit the magnitude of a current that flows when an AC-to-chassis fault (ACF) occurs between an AC connection and the chassis of the HEV. An electric machine having a winding, an inverter sub-module (ISM) having a first switch and a second switch, and fault protection elements (FPEs), coupled to the ISM, are provided. The winding is coupled to the ISM coupled via the AC connection. The FPEs can include, for example, first and second inductances. To limit the magnitude of the current, the current can be passed along a first current path that includes the second inductance when the first switch is closed, and can be passed along a second current path that includes the first inductance when the second switch is closed.