Patents by Inventor Sudhakar INGUVA
Sudhakar INGUVA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10343673Abstract: A hybrid powertrain system includes a method for managing electrical charging of a DC power source, which includes determining an initial charge-sustaining SOC setpoint and an initial charge-termination SOC setpoint. The DC power source is dynamically monitored. An adjustment to a charge-sustaining SOC setpoint is determined based upon the ambient temperature, the device temperature and the SOC of the DC power source, and an updated charge-sustaining SOC setpoint is determined based upon the adjustment to the charge-sustaining SOC setpoint and the initial charge-sustaining SOC setpoint. An electric energy equalization factor ? is determined, and an updated charge termination SOC setpoint can be determined based upon the electric energy equalization factor ?, the updated charge-sustaining SOC setpoint and the initial charge-sustaining SOC setpoint. Charging of the DC power source is controlled based upon the updated charge-termination SOC setpoint.Type: GrantFiled: June 27, 2017Date of Patent: July 9, 2019Assignee: GM Global Technology Operations LLC.Inventors: Wei Liu, Pablo Valencia, Jr., Leng Mao, Sudhakar Inguva, Ryan B. Moulliet
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Publication number: 20180370520Abstract: A hybrid powertrain system includes a method for managing electrical charging of a DC power source, which includes determining an initial charge-sustaining SOC setpoint and an initial charge-termination SOC setpoint. The DC power source is dynamically monitored. An adjustment to a charge-sustaining SOC setpoint is determined based upon the ambient temperature, the device temperature and the SOC of the DC power source, and an updated charge-sustaining SOC setpoint is determined based upon the adjustment to the charge-sustaining SOC setpoint and the initial charge-sustaining SOC setpoint. An electric energy equalization factor ? is determined, and an updated charge termination SOC setpoint can be determined based upon the electric energy equalization factor ?, the updated charge-sustaining SOC setpoint and the initial charge-sustaining SOC setpoint. Charging of the DC power source is controlled based upon the updated charge-termination SOC setpoint.Type: ApplicationFiled: June 27, 2017Publication date: December 27, 2018Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Wei Liu, Pablo Valencia, JR., Leng Mao, Sudhakar Inguva, Ryan B. Moulliet
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Patent number: 9864016Abstract: System and methods for estimating a life of a battery pack are presented. In certain embodiments, a method for estimating a life of a battery pack may include generating cell-level test data that includes measured parameters a of battery cell included in the battery pack in response to a plurality of test conditions. One or more first thermal response parameters associated with the battery cells of the battery pack may be determined. A battery cell aging model may be generated based, at least in part, on the cell-level test data and the one or more first thermal response parameters. Second thermal response parameters associated with the battery pack may be determined, and an estimated life of the battery pack may be determined based, at least in part, on the battery cell aging model and the second thermal response parameters.Type: GrantFiled: October 31, 2014Date of Patent: January 9, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Sudhakar Inguva, Austen Bernardi, Ramesh Rebba, Ryan B. Moulliet
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Patent number: 9535132Abstract: System and methods for determining performance degradation of a battery system are presented. In certain embodiments, the disclosed systems and methods may involve testing, monitoring, and/or modeling of battery system cyclic performance degradation at a single battery system operating temperature. The disclosed systems and methods may offer certain efficiencies over conventional techniques for determining cyclic degradation of a battery system. Such efficiencies may allow the disclosed systems and methods to be implemented in connection with real-time battery state estimation methods.Type: GrantFiled: March 20, 2014Date of Patent: January 3, 2017Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Sudhakar Inguva, Vijay P. Saharan, Mark W. Verbrugge
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Patent number: 9417270Abstract: Disclosed herein are various systems and methods for capturing and utilizing temperature information in a battery pack. An electrical measurement system may be configured to determine a subdivision electrical parameter associated with one or more subdivisions, and a thermal measurement system configured to determine and track a thermal parameter associated with one or more subdivisions. A battery model may utilize the thermal parameter and the electrical parameter to estimate a characteristic of one or more battery subdivisions. In some embodiments, the battery model may further estimate a second thermal parameter of a second subdivision based upon a location of the second subdivision within the battery pack and based on the estimated characteristic of a first subdivision. Some embodiments may further estimate a life assessment of one or more subdivisions based at least in part on the subdivision electrical parameter and the thermal parameter.Type: GrantFiled: January 8, 2013Date of Patent: August 16, 2016Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: John T. Guerin, Sudhakar Inguva, Rashed S. Rabaa, Sanjay K. Mahajan, Ramesh Rebba
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Publication number: 20160124052Abstract: System and methods for estimating a life of a battery pack are presented. In certain embodiments, a method for estimating a life of a battery pack may include generating cell-level test data that includes measured parameters a of battery cell included in the battery pack in response to a plurality of test conditions. One or more first thermal response parameters associated with the battery cells of the battery pack may be determined. A battery cell aging model may be generated based, at least in part, on the cell-level test data and the one or more first thermal response parameters. Second thermal response parameters associated with the battery pack may be determined, and an estimated life of the battery pack may be determined based, at least in part, on the battery cell aging model and the second thermal response parameters.Type: ApplicationFiled: October 31, 2014Publication date: May 5, 2016Inventors: SUDHAKAR INGUVA, AUSTEN BERNARDI, RAMESH REBBA, RYAN B. MOULLIET
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Publication number: 20150268307Abstract: System and methods for determining performance degradation of a battery system are presented. In certain embodiments, the disclosed systems and methods may involve testing, monitoring, and/or modeling of battery system cyclic performance degradation at a single battery system operating temperature. The disclosed systems and methods may offer certain efficiencies over conventional techniques for determining cyclic degradation of a battery system. Such efficiencies may allow the disclosed systems and methods to be implemented in connection with real-time battery state estimation methods.Type: ApplicationFiled: March 20, 2014Publication date: September 24, 2015Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: SUDHAKAR INGUVA, VIJAY P. SAHARAN, MARK W. VERBRUGGE
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Publication number: 20140195179Abstract: Disclosed herein are various systems and methods for capturing and utilizing temperature information in a battery pack. An electrical measurement system may be configured to determine a subdivision electrical parameter associated with one or more subdivisions, and a thermal measurement system configured to determine and track a thermal parameter associated with one or more subdivisions. A battery model may utilize the thermal parameter and the electrical parameter to estimate a characteristic of one or more battery subdivisions. In some embodiments, the battery model may further estimate a second thermal parameter of a second subdivision based upon a location of the second subdivision within the battery pack and based on the estimated characteristic of a first subdivision. Some embodiments may further estimate a life assessment of one or more subdivisions based at least in part on the subdivision electrical parameter and the thermal parameter.Type: ApplicationFiled: January 8, 2013Publication date: July 10, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: JOHN T. GUERIN, SUDHAKAR INGUVA, RASHED S. RABAA, SANJAY K. MAHAJAN, RAMESH REBBA
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Publication number: 20120316810Abstract: Methods and systems are provided for calibrating one or more limits of a battery of a vehicle, the battery having state of charge limits and power limits. A history of environmental conditions for the vehicle is obtained and stored in a memory. One or more of the state of charge limits, one or more of the power limits, or both are adjusted based on the history of environmental conditions and usage severity using a processor.Type: ApplicationFiled: June 8, 2011Publication date: December 13, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Asif A. SYED, Sudhakar INGUVA, Joseph M. LOGRASSO, Christopher R. NEUMAN, Ryan B. MOULLIET