Sarah L Stewart

US Patent:

8471521, Jun 25, 2013

Filed:

Dec 8, 2010

Appl. No.:

12/962693

Inventors:

Sarah G. Stewart - San Francisco CA, US
Scott Ira Kohn - Redwood City CA, US
Kurt Russell Kelty - Palo Alto CA, US
Jeffrey Brian Straubel - Menlo Park CA, US

Assignee:

Tesla Motors, Inc. - Palo Alto CA

International Classification:

H02J 7/14
G06F 7/00
B60W 10/24

US Classification:

320104, 320132, 701 63, 180 6529

Abstract:

A power source comprised of a first battery pack (e. g. , a non-metal-air battery pack) and a second battery pack (e. g. , a metal-air battery pack) is provided, wherein the second battery pack is only used as required by the state-of-charge (SOC) of the first battery pack or as a result of the user selecting an extended range mode of operation. Minimizing use of the second battery pack prevents it from undergoing unnecessary, and potentially lifetime limiting, charge cycles. The second battery pack may be used to charge the first battery pack or used in combination with the first battery pack to supply operational power to the electric vehicle.

US Patent:

20110117403, May 19, 2011

Filed:

Sep 10, 2010

Appl. No.:

12/879854

Inventors:

Weston Arthur Hermann - Palo Alto CA, US
Vineet Haresh Mehta - San Francisco CA, US
Sarah G. Stewart - San Francisco CA, US
Clay Hajime Kishiyama - San Mateo CA, US

Assignee:

TESLA MOTORS, INC. - Palo Alto CA

International Classification:

H01M 6/10

US Classification:

429 94

Abstract:

A battery is provided that includes a cell case, an electrode assembly and a center pin within the electrode assembly, where the electrode assembly is wrapped around the center pin, and where the center pin is comprised of a material that is rigid within the normal operating temperature range of the battery and deforms, and/or melts, when the battery temperature exceeds the normal operating temperature range of the battery.

US Patent:

20110298417, Dec 8, 2011

Filed:

Dec 16, 2010

Appl. No.:

12/970838

Inventors:

Sarah G. Stewart - San Francisco CA, US
Christopher Dangler - San Francisco CA, US
Clay H. Kishiyama - San Mateo CA, US
Weston A. Hermann - Palo Alto CA, US
Scott I. Kohn - Redwood City CA, US
Kurt R. Kelty - Palo Alto CA, US

Assignee:

Tesla Motors, Inc. - Palo Alto CA

International Classification:

H02J 7/04
H02J 7/00

US Classification:

320107, 320162, 320134, 320132, 320150

Abstract:

An apparatus and method for identifying a presence of a short circuit in a battery pack. A fault-detection apparatus for a charging system that rapidly charges a collection of interconnected lithium ion battery cells, the safety system includes a data-acquisition system for receiving a set of data parameters from the collection while the charging system is actively charging the collection; a monitoring system evaluating the set of data parameters to identify a set of anomalous conditions; and a controller comparing the set of anomalous conditions against a set of predetermined profiles indicative of an internal short in one or more cells of the collection, the controller establishing an internal-short state for the collection when the comparing has a predetermined relationship to the set of predetermined profiles.

US Patent:

20120041624, Feb 16, 2012

Filed:

Dec 8, 2010

Appl. No.:

12/962851

Inventors:

Sarah G. Stewart - San Francisco CA, US
Scott Ira Kohn - Redwood City CA, US
Kurt Russell Kelty - Palo Alto CA, US
Jeffrey Brian Straubel - Menlo Park CA, US

Assignee:

TESLA MOTORS, INC. - Palo Alto CA

International Classification:

B60L 15/20

US Classification:

701 22, 180 6529, 903903

Abstract:

A power source comprised of a first battery pack (e.g., a non-metal-air battery pack) and a second battery pack (e.g., a metal-air battery pack) is provided, wherein the second battery pack is only used as required by the state-of-charge (SOC) of the first battery pack or as a result of the user selecting an extended range mode of operation. Minimizing use of the second battery pack prevents it from undergoing unnecessary, and potentially lifetime limiting, charge cycles. The second battery pack may be used to charge the first battery pack or used in combination with the first battery pack to supply operational power to the electric vehicle.

US Patent:

20130221916, Aug 29, 2013

Filed:

Feb 28, 2012

Appl. No.:

13/406773

Inventors:

Kurt Russell Kelty - Palo Alto CA, US
Weston Arthur Hermann - Palo Alto CA, US
Scott Ira Kohn - Redwood City CA, US
Clay Hajime Kishiyama - San Mateo CA, US
Vineet Haresh Mehta - San Francisco CA, US
Sarah G. Stewart - San Francisco CA, US

Assignee:

TESLA MOTORS, INC. - Palo Alto CA

International Classification:

H02J 7/00

US Classification:

320109

Abstract:

A multi-mode operating system for an electric vehicle is provided, the system including means for a user to select a preferred mode of operation from a plurality of operational modes that include at least a Battery Life mode and a Standard mode, wherein the Battery Life mode is configured to select operating and charging parameters that emphasize battery health and battery life over vehicle range and/or vehicle performance. The system includes a thermal management system for maintaining the vehicle's battery pack to within any of a plurality of temperature ranges, and a charging system for charging the vehicle's battery pack to any of a plurality of minimum and maximum SOC levels and at any of a plurality of charging rates.

US Patent:

20130221928, Aug 29, 2013

Filed:

Feb 28, 2012

Appl. No.:

13/407573

Inventors:

Kurt Russell Kelty - Palo Alto CA, US
Weston Arthur Hermann - Palo Alto CA, US
Scott Ira Kohn - Redwood City CA, US
Clay Hajime Kishiyama - San Mateo CA, US
Vineet Haresh Mehta - San Francisco CA, US
Sarah G. Stewart - San Francisco CA, US

Assignee:

TESLA MOTORS, INC. - Palo Alto CA

International Classification:

H02J 7/00

US Classification:

320134

Abstract:

A method of setting the operational mode of an electric vehicle is provided, where the operational mode is selected from a plurality of operational modes that include at least a Battery Life mode and a Standard mode, wherein the Battery Life mode is configured to select operating and charging parameters that emphasize battery health and battery life over vehicle range and/or vehicle performance. The system includes a thermal management system for maintaining the vehicle's battery pack to within any of a plurality of temperature ranges, and a charging system for charging the vehicle's battery pack to any of a plurality of minimum and maximum SOC levels and at any of a plurality of charging rates.

US Patent:

20130234648, Sep 12, 2013

Filed:

Mar 9, 2012

Appl. No.:

13/416251

Inventors:

Kurt Russell Kelty - Palo Alto CA, US
Clay Hajime Kishiyama - San Mateo CA, US
Sarah G. Stewart - San Francisco CA, US

Assignee:

Tesla Motors, Inc. - Palo Alto CA

International Classification:

H02J 7/00

US Classification:

320106, 320160

Abstract:

An automated charge preparation method periodically determines critical parameters for the set of relevant operating conditions, determines whether fast charging is possible, applies fast charging when possible, otherwise applies a dynamically scaled charging rate that is optimized based upon current critical parameters (while optionally heating the individual battery cells as long as fast charging is not available) to reduce/eliminate a risk of lithium-plating.

US Patent:

20170222447, Aug 3, 2017

Filed:

Jan 29, 2016

Appl. No.:

15/010873

Inventors:

- Stuttgart, DE
Reinhardt Klein - Mountain View CA, US
Ashish Krupadanam - Cupertino CA, US
John F. Christensen - Elk Grove CA, US
Aleksandar Kojic - Sunnyale CA, US
Sarah Stewart - San Francisco CA, US
Sun Ung Kim - Fremont CA, US
Christina Johnston - Mountain View CA, US

International Classification:

H02J 7/00

Abstract:

A method of managing a battery system, the battery system including at least one battery cell, at least one sensor configured to measure at least one characteristic of the battery cell, and a battery management system including a microprocessor and a memory, the method comprising receiving by the battery management system, from the at least one sensor at least one measured characteristic of the battery cell at a first time and at least one measured characteristic of the battery cell at a second time. The battery management system estimating, at least one state of the battery cell by applying a physics-based battery model, the physics based battery model being based on differential algebraic equations; and regulating by the battery management system, at least one of charging or discharging of the battery cell based on the at least one estimated state.

Author:

Sarah Hyman Stewart

ISBN #:

0553103032

Author:

Sarah Hyman Stewart

ISBN #:

0553378333

Author:

Sarah Stewart

ISBN #:

0300042515

Author:

Sarah Stewart

ISBN #:

0374324638

Author:

Sarah Stewart

ISBN #:

0374325170

Author:

Sarah Stewart

ISBN #:

0374339058

Author:

Sarah Stewart

ISBN #:

0374343888

Author:

Sarah Stewart

ISBN #:

0374350140