Patents by Inventor Patricia M. Laskowsky

Patricia M. Laskowsky 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).

  • Publication number: 20220185137
    Abstract: A controller of a host system executes a method for detecting an external AC electrical device. While an AC charging inlet of the host system is electrically connected to the device via different vehicle-to-live (V2L) and jump-charge connections, the controller detects a control pilot voltage and a proximity voltage. When the control pilot voltage is 0V, the controller determines whether entry conditions are satisfied indicative of a desire to offload power from the host system to the device. When the entry conditions are satisfied, the proximity or control pilot voltage are modulated to generate a modulated voltage signal, which the controller compares to an expected voltage indicative of the device. Power is offloaded to the device when the modulated voltage signal matches the expected voltage.
    Type: Application
    Filed: December 15, 2020
    Publication date: June 16, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Douglas S. Cesiel, Jacob A. St George, Brandon R. Jones, Aniket P. Kothari, Patricia M. Laskowsky, Bryan M. Ludwig, Bryan T. Sauter, Giovanni Spoleti, Jack M. Williams, Bo Xie, Matthew A. Thomas
  • Patent number: 11236695
    Abstract: Methods and systems are provided for monitoring a fuel injector of an internal combustion engine. In one embodiment, a method includes: receiving a set of feature data, the feature data sensed from a fuel injector during a fuel injection event; processing, by a processor, the set of feature data with a decision tree model to generate a prediction of a fault status; and selectively generating, by the processor, a notification signal based on the prediction.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 1, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jin Shen, Jeffrey M. Hutmacher, Patricia M. Laskowsky, Dana J. Suttman, Iman Mohammadrezazadeh, Ruggero Scorcioni, Vincent DeSapio
  • Publication number: 20210079864
    Abstract: Methods and systems are provided for monitoring a fuel injector of an internal combustion engine. In one embodiment, a method includes: receiving a set of feature data, the feature data sensed from a fuel injector during a fuel injection event; processing, by a processor, the set of feature data with a decision tree model to generate a prediction of a fault status; and selectively generating, by the processor, a notification signal based on the prediction.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 18, 2021
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jin Shen, Jeffrey M. Hutmacher, Patricia M. Laskowsky, Dana J. Suttman, Iman Mohammadrezazadeh, Ruggero Scorcioni, Vincent DeSapio
  • Patent number: 10914262
    Abstract: Methods and systems are provided for monitoring a fuel injector of an internal combustion engine. In one embodiment, a method includes: receiving a set of feature data, the feature data sensed from a fuel injector during a fuel injection event; processing, by a processor, the set of feature data with a machine learning model to generate a prediction of a fault status; and selectively generating, by the processor, a notification signal based on the prediction.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 9, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patricia M. Laskowsky, Dana J. Suttman, Jin Shen, Jeffrey M. Hutmacher
  • Patent number: 10345385
    Abstract: Systems and methods are disclosed for estimating a state of a battery system such as a current-limited state of power and/or a voltage-limited state of power using a battery system model incorporating a nonlinear resistance element. Parameters of elements included in a battery cell model associated with a nonlinear resistance of a battery cell may be directly parameterized and used in connection with state estimation methods. By accounting for the nonlinear effect, embodiments of the disclosed systems and methods may increase available battery power utilized in connection with battery system control and/or management decisions over a larger window of operating conditions.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: July 9, 2019
    Assignee: GM Global Technology Operations LLC.
    Inventors: Charles W Wampler, Mark W Verbrugge, Brian J Koch, Patricia M Laskowsky
  • Patent number: 10288692
    Abstract: System and methods for estimating a relationship between a SOC and an OCV of a battery system included in a vehicle are presented. In certain embodiments, an initial relationship between an open circuit voltage (“OCV”) and a state of charge (“SOC”) of a cell of the battery system may be determined at a beginning of life of the cell. Changes in one or more stoichiometric points of a half-cell of the cell may be determined as the cell ages. Based on the determined stoichiometric point changes of the half-cell, an initial relationship between the OCV and the SOC of the cell may be adjusted to generate an updated relationship between the OCV and the SOC of the cell.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: May 14, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Patricia M. Laskowsky, Patrick Frost, Raghunathan K, Brian J. Koch, John E. Novak
  • Patent number: 10288693
    Abstract: A number of variations include a method, which may include using at least a segment of voltage-based Battery State Estimation data, and using real-time linear regression, which may be a method of estimating future behavior of a system based on current and previous data points, to provide a robust and fast-adapting impedance response approximator. Linear regression may be performed by forming an RC circuit which is “equivalent” to electrochemical impedance spectroscopy data and processing the runtime values of that RC circuit using any number of known real-time linear regression algorithms including, but not limited, to a weighted recursive least squares (WRLS), Kalman filter or other means.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: May 14, 2019
    Assignee: GM Global Technology Operations LLC
    Inventors: Daniel R. Baker, Mark W. Verbrugge, Patrick Frost, Brian J. Koch, Charles W. Wampler, II, Patricia M. Laskowsky
  • Patent number: 10160340
    Abstract: A system for optimizing life of a battery pack in a plug-in vehicle includes sensors for measuring battery performance data, including an open-circuit voltage, charging current, and/or temperature of the battery pack, a GPS receiver, a user interface, and a controller. The controller executes a method to monitor degradation of the battery pack using the performance data, and determines driving and charging histories for an operator of the vehicle using the measured battery performance data and a position signal from the GPS receiver. The histories identify the days, hours, and locations at which the operator has driven the vehicle and charged the battery pack. The controller identifies a state of charge data bin missing performance data or containing old performance data. The controller then controls a charging operation of the battery pack via a charging control signal, and records the measured battery performance data for the identified SOC data bin.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: December 25, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Todd P. Lindemann, Rory B. Fraga, Patricia M. Laskowsky, Patrick E. Frost
  • Patent number: 10101402
    Abstract: A method for estimating battery power capability in a torque-generating system having a battery pack with battery cells includes calculating a voltage spread as a difference between an average and minimum cell voltage of the battery pack. The method also includes increasing a calibrated voltage control limit by an offset that is based on a magnitude of the voltage spread, doing so when the minimum cell voltage is less than the control limit, and recording the offset in a memory location referenced by pack operating conditions. Further, the power capability is estimated using the recorded offset when the battery pack operates under conditions that are the same as the operating conditions, and then executing a control action of the system using the estimated power capability. A torque-generating system includes the battery pack, an electric machine, and a controller programmed to execute the above-described method.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: October 16, 2018
    Assignee: GM Global Technology Operations LLC
    Inventors: Patrick E. Frost, Rory B. Fraga, Patricia M. Laskowsky, Alexander K. Suttman
  • Patent number: 10048320
    Abstract: System and methods for estimating a future power capability of a battery system included in a vehicle are presented. In some embodiments, a method for estimating a future power capability of a battery system may include determining an initial battery voltage when the battery operates at a current limit and estimating a future battery current at a first time when the battery operates at the associated voltage limit based on the initial battery current. A future battery voltage at the first time when the battery operates at the associated current limit may be determined based on the initial battery voltage. An estimated voltage-limited power capability of the battery at the first time may be determined based on the future battery current and an estimated current-limited power capability of the battery at the first time may be determined based on the future battery voltage.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: August 14, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patrick Frost, Brian J. Koch, Patricia M. Laskowsky, Ashley McAllister
  • Publication number: 20170343613
    Abstract: A method for estimating battery power capability in a torque-generating system having a battery pack with battery cells includes calculating a voltage spread as a difference between an average and minimum cell voltage of the battery pack. The method also includes increasing a calibrated voltage control limit by an offset that is based on a magnitude of the voltage spread, doing so when the minimum cell voltage is less than the control limit, and recording the offset in a memory location referenced by pack operating conditions. Further, the power capability is estimated using the recorded offset when the battery pack operates under conditions that are the same as the operating conditions, and then executing a control action of the system using the estimated power capability. A torque-generating system includes the battery pack, an electric machine, and a controller programmed to execute the above-described method.
    Type: Application
    Filed: May 31, 2016
    Publication date: November 30, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patrick E. Frost, Rory B. Fraga, Patricia M. Laskowsky, Alexander K. Suttman
  • Publication number: 20170267116
    Abstract: A system for optimizing life of a battery pack in a plug-in vehicle includes sensors for measuring battery performance data, including an open-circuit voltage, charging current, and/or temperature of the battery pack, a GPS receiver, a user interface, and a controller. The controller executes a method to monitor degradation of the battery pack using the performance data, and determines driving and charging histories for an operator of the vehicle using the measured battery performance data and a position signal from the GPS receiver. The histories identify the days, hours, and locations at which the operator has driven the vehicle and charged the battery pack. The controller identifies a state of charge data bin missing performance data or containing old performance data. The controller then controls a charging operation of the battery pack via a charging control signal, and records the measured battery performance data for the identified SOC data bin.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 21, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Todd P. Lindemann, Rory B. Fraga, Patricia M. Laskowsky, Patrick E. Frost
  • Patent number: 9766297
    Abstract: System and methods for estimating a capacity of a battery system and/or a constituent cell and/or pack included in a vehicle are presented. In certain embodiments, a method for estimating a capacity of a battery system may include determining voltage-based state of charge (“SOC”) data of a pack of the battery system based on measured pack voltage information and a relationship between an open circuit voltage (“OCV”) and the SOC of the pack of at a beginning of life of the pack. Beginning of life SOC data of the pack may be determined based on coulomb counting measurements, and a ratio may be determined based on the beginning of life SOC data of the pack and the voltage-based SOC data of the pack. An estimated present capacity of the pack may be determined based on the beginning of life capacity of the pack and the ratio.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: September 19, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patrick Frost, Patricia M. Laskowsky, John E. Novak
  • Patent number: 9594121
    Abstract: System and methods for estimating a capacity of a battery are presented. A measure of data skewness may be calculated from a battery system terminal voltage measurement. Inflection points in the data skewness of the terminal voltage measurement may align with transition points associated with a battery system. These transitions points may be associated with known SOCs determined from testing and/or characterization of the battery system. Using the detected transitions and associated SOCs and an indication of an accumulated charge provided to/from the battery between the transitions, an estimated capacity of the battery system may be determined.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: March 14, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Patrick Frost, Patricia M. Laskowsky, Kurt M. Johnson
  • Patent number: 9586579
    Abstract: A system for use with a battery and sensors operable for measuring battery data includes an interactive user interface and a controller programmed with battery degradation monitoring logic for estimating a state of the battery. As part of a method, the controller identifies data bins for which measured state of charge range-based battery performance data is missing or dated/stale, and automatically prompts an operator to execute an assigned task corresponding to the identified data bins. The controller records the battery performance data for the identified data bins upon completion of the assigned task, estimates the state of the battery using the recorded battery performance data and the battery degradation monitoring logic, and executes a control action with respect to the system using the estimated state. A virtual or actual reward feature may be displayed in response to completion of the assigned task.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: March 7, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Patricia M. Laskowsky, Patrick E. Frost, Rory B. Fraga, Eugenie T. Abboud, Todd P. Lindemann, Mark D. Miller
  • Patent number: 9575128
    Abstract: Adaptive estimation techniques to create a battery state estimator to estimate power capabilities of the battery pack in a vehicle. The estimator adaptively updates circuit model parameters used to calculate the voltage states of the ECM of a battery pack. The adaptive estimation techniques may also be used to calculate a solid-state diffusion voltage effects within the battery pack. The adaptive estimator is used to increase robustness of the calculation to sensor noise, modeling error, and battery pack degradation.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: February 21, 2017
    Assignee: GM Global Technology Operations LLC
    Inventors: Patrick Frost, Brian J. Koch, Damon R. Frisch, Brett B. Stawinski, Patricia M. Laskowsky, Kurt M. Johnson, Robert C. Baraszu
  • Publication number: 20160363629
    Abstract: System and methods for estimating a future power capability of a battery system included in a vehicle are presented. In some embodiments, a method for estimating a future power capability of a battery system may include determining an initial battery voltage when the battery operates at a current limit and estimating a future battery current at a first time when the battery operates at the associated voltage limit based on the initial battery current. A future battery voltage at the first time when the battery operates at the associated current limit may be determined based on the initial battery voltage. An estimated voltage-limited power capability of the battery at the first time may be determined based on the future battery current and an estimated current-limited power capability of the battery at the first time may be determined based on the future battery voltage.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 15, 2016
    Inventors: PATRICK FROST, BRIAN J. KOCH, PATRICIA M. LASKOWSKY, ASHLEY MCALLISTER
  • Publication number: 20160363630
    Abstract: System and methods for estimating a relationship between a SOC and an OCV of a battery system included in a vehicle are presented. In certain embodiments, an initial relationship between an open circuit voltage (“OCV”) and a state of charge (“SOC”) of a cell of the battery system may be determined at a beginning of life of the cell. Changes in one or more stoichiometric points of a half-cell of the cell may be determined as the cell ages. Based on the determined stoichiometric point changes of the half-cell, an initial relationship between the OCV and the SOC of the cell may be adjusted to generate an updated relationship between the OCV and the SOC of the cell.
    Type: Application
    Filed: June 15, 2015
    Publication date: December 15, 2016
    Inventors: PATRICIA M. LASKOWSKY, PATRICK FROST, RAGHUNATHAN K, BRIAN J. KOCH, JOHN E. NOVAK
  • Publication number: 20160363631
    Abstract: System and methods for estimating a capacity of a battery system and/or a constituent cell and/or pack included in a vehicle are presented. In certain embodiments, a method for estimating a capacity of a battery system may include determining voltage-based state of charge (“SOC”) data of a pack of the battery system based on measured pack voltage information and a relationship between an open circuit voltage (“OCV”) and the SOC of the pack of at a beginning of life of the pack. Beginning of life SOC data of the pack may be determined based on coulomb counting measurements, and a ratio may be determined based on the beginning of life SOC data of the pack and the voltage-based SOC data of the pack. An estimated present capacity of the pack may be determined based on the beginning of life capacity of the pack and the ratio.
    Type: Application
    Filed: June 12, 2015
    Publication date: December 15, 2016
    Inventors: PATRICK FROST, PATRICIA M. LASKOWSKY, JOHN E. NOVAK
  • Patent number: 9377512
    Abstract: A battery state estimator which combines an electrochemical solid-state concentration model with an empirical equivalent-circuit model. The battery state estimator uses a reduced-order physics-based electrochemical solid-state concentration model to calculate open circuit voltage of a battery cell, and uses the calculated open circuit voltage in an equivalent-circuit model to evaluate a diffusion voltage drop and other battery cell parameters. The battery state estimator is implemented in an online estimator framework using an extended Kalman filter, with a measured terminal voltage and measured current as inputs. A state of charge of the battery cell can be determined from the calculated open circuit voltage, and the state of charge along with the other parameters from the equivalent-circuit model are used to evaluate battery pack performance and to control battery pack charging and discharging.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: June 28, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: Patrick Frost, Patricia M. Laskowsky, Brian J. Koch