Brian Sisk

Brian Sisk

Trabuco Canyon, California, United States
3K followers 500+ connections

Join to view profile

About

My passion is Research and Development that can fundamentally impact the world or change…

Activity

Join now to see all activity

Experience

  • Sepion Technologies Graphic

    Sepion Technologies

    Alameda, California, United States

  • -

    Irvine, California, United States

  • -

    Waltham,MA

  • -

    Greater Milwaukee Area

  • -

    Milwaukee, WI

  • -

    Greater Milwaukee Area

  • -

    Greater Milwaukee Area

  • -

    Herndon, VA

  • -

  • -

  • -

Education

  • Caltech Graphic

    Caltech

    -

    Thesis focused on the development of "electronic nose"; chemical sensors and accompanying data-processing algorithms for broad-spectrum vapor detection. Title: "Computational Optimization of Chemical Vapor Detector Arrays"

    Topics included in my thesis:
    * Drift correction and calibration - how can a chemical sensor array be used long-term without its classification capability degrading?
    *Class-based categorization - can a chemical sensor array qualitatively characterize chemicals…

    Thesis focused on the development of "electronic nose"; chemical sensors and accompanying data-processing algorithms for broad-spectrum vapor detection. Title: "Computational Optimization of Chemical Vapor Detector Arrays"

    Topics included in my thesis:
    * Drift correction and calibration - how can a chemical sensor array be used long-term without its classification capability degrading?
    *Class-based categorization - can a chemical sensor array qualitatively characterize chemicals it has never seen, based on similarity to others?
    *Sensor information value - how many sensors are needed to classify chemicals, and how much information do they provide?

  • -

    Activities and Societies: Speech/Debate Team

    Research focused on thermal and mechanical analysis of materials, particularly polymers and polymer composites. Worked with NASA/Glenn Research Center to develop mixed polymer blends for high-temperature applications. Thesis title: "Development of Bismaleimide/Cyanate Ester Blends for Use in NASA's Relaunchable Vehicles Program".

Volunteer Experience

  • Volunteer - "A World In Motion"

    Society of Automotive Engineers

    - Present 12 years 8 months

    Children

    The Society of Automotive Engineers sponsors a program called "A World In Motion". In this program, scientists and engineers volunteer to spend time with students - typically in elementary/middle school - and introduce them to engineering. They are presented with a challenge to develop a balloon-powered car from simple materials available in the classroom.

    The program introduces students to crucial concepts such as the scientific method, engineering design, testing and verification…

    The Society of Automotive Engineers sponsors a program called "A World In Motion". In this program, scientists and engineers volunteer to spend time with students - typically in elementary/middle school - and introduce them to engineering. They are presented with a challenge to develop a balloon-powered car from simple materials available in the classroom.

    The program introduces students to crucial concepts such as the scientific method, engineering design, testing and verification, and more. More importantly, it teaches them teamwork and pride in their work. Most of all though, it is fun for students and volunteers alike, and reinforces the need our world has for a well-trained future workforce.

Publications

  • Exploring the Opportunity Space For High-Power Li-Ion Batteries in Next-Generation 48V Mild Hybrid Electric Vehicles

    Society of Automotive Engineers

    48V battery packs, with rated power capabilities on the order of 8-16kW, are rapidly becoming a new standard in the automotive industry. Improving on their 12V counterparts (2-5kW), 48V Mild Hybrid Electric Vehicles (MHEV) allow for extended start-stop and regenerative braking functionalities, providing fuel economy benefits of up to 10-15% in standard passenger vehicles.
    New and relatively unexplored opportunities exist to further increase the fuel economy and performance of 48V systems…

    48V battery packs, with rated power capabilities on the order of 8-16kW, are rapidly becoming a new standard in the automotive industry. Improving on their 12V counterparts (2-5kW), 48V Mild Hybrid Electric Vehicles (MHEV) allow for extended start-stop and regenerative braking functionalities, providing fuel economy benefits of up to 10-15% in standard passenger vehicles.
    New and relatively unexplored opportunities exist to further increase the fuel economy and performance of 48V systems. Improvement in battery power (to ~25kW) would further enable hybridization to near-HEV levels as well as engine downsizing, thus paving the way to fuel economy improvements beyond the current 10-15% MHEV limit. Additionally, new electrified features may be added, such as electric turbo/supercharging, electric traction, electric power steering, electric suspension and electric air conditioning. Vehicle electrification topology and strategy are investigated with respect to their impact on sizing, including a fuel-economy-oriented strategy based on a belt-integrated starter generator, a P4 “through-road” hybrid, and a 48V variant with electrified accessories.
    In this paper, we explore the various opportunities for novel, advanced 48V systems and link these capabilities with requirements at the battery level. We conclude that future-looking vehicle features and high levels of fuel economy benefit require the development of 48V battery packs with a high power-to-energy ratio. 48V batteries with strong power (up to ~25kW) and HEV-level energy capabilities (<200Wh for most scenarios) are needed to enable the technologies explored in this work, demanding batteries with power-to-energy ratios between 30 and 160. Our conclusions suggest that a family of batteries based on high-power lithium-iron-phosphate (LFP) can meet the needs of advanced 48V architectures, providing new features to consumers and excellent fuel economy.

    See publication

  • Estimating the Power Limit of a Lithium Battery Pack by Considering Cell Variability

    Society of Automotive Engineers

    Power limit estimation of a lithium-ion battery pack can be employed by a battery management system (BMS) to balance a variety of operational considerations, including optimization of pulse capability while avoiding damage and minimizing aging. Consideration of cell-to-cell performance variability of lithium-ion batteries is critical to correct estimation of the battery pack power limit as well as proper sizing of the individual cells in the battery. Further, understanding of cell variability…

    Power limit estimation of a lithium-ion battery pack can be employed by a battery management system (BMS) to balance a variety of operational considerations, including optimization of pulse capability while avoiding damage and minimizing aging. Consideration of cell-to-cell performance variability of lithium-ion batteries is critical to correct estimation of the battery pack power limit as well as proper sizing of the individual cells in the battery. Further, understanding of cell variability is necessary to protect the cell and other system components (e.g., fuse and contactor, from over-current damage). In this work, we present the use of an equivalent circuit model for estimation of the power limit of lithium-ion battery packs by considering the individual cell variability under current or voltage constraints. We compare the power limit estimation by using individual cell characteristics compared to the estimate found using only max/min values of cell characteristics. Finally, we consider how the estimation capability and variability will vary with the total number of the cells in the battery pack.

    Other authors
    See publication

  • A Simulation Based Analysis of 12V and 48V Microhybrid Systems Across Vehicle Segments and Drive Cycles

    Society of Automotive Engineers

    The majority of studies in automotive electrification technology focus on the performance of high voltage HEV and EV powertrains. With the introduction of microhybrid systems as a near term technology trend, this work focuses on an analysis of low voltage (<60V) systems across multiple vehicle segments and region-specific regulatory drive cycles. Vehicle simulation results are presented for 12V and 48V vehicle systems equipped with start-stop and regenerative braking, features commonly…

    The majority of studies in automotive electrification technology focus on the performance of high voltage HEV and EV powertrains. With the introduction of microhybrid systems as a near term technology trend, this work focuses on an analysis of low voltage (<60V) systems across multiple vehicle segments and region-specific regulatory drive cycles. Vehicle simulation results are presented for 12V and 48V vehicle systems equipped with start-stop and regenerative braking, features commonly associated with microhybrid vehicles. Simulation results show that fuel economy benefits from start-stop vary significantly between drive cycles. In contrast, total energy recuperation is similar across all vehicle classes for 12V microhybrid systems. For 48V systems, total recuperated energy increases with vehicle mass while the percent fuel economy benefit is highest for lighter vehicles. The results suggest that a single 12V electrification system may be implemented for a range of segments and that technology adaptation trends will be influenced by region specific regulatory drive cycles.

    See publication

  • Integrating Thermal and Electrochemical Modeling of Lithium-ion Batteries to Optimize Requirements Compliance

    Society of Automotive Engineers

    Competitive engineering of battery packs for vehicle applications requires a careful alignment of function against vehicle manufacturer requirements. Traditional battery engineering practices focus on flow down of requirements from the top-level system requirements through to low-level components, meeting or exceeding each requirement at every level. This process can easily produce an over-engineered, cost-uncompetitive product.

    By integrating the key limiting factors of battery…

    Competitive engineering of battery packs for vehicle applications requires a careful alignment of function against vehicle manufacturer requirements. Traditional battery engineering practices focus on flow down of requirements from the top-level system requirements through to low-level components, meeting or exceeding each requirement at every level. This process can easily produce an over-engineered, cost-uncompetitive product.

    By integrating the key limiting factors of battery performance, we can directly compare battery capability to requirements. Here, we consider a power-oriented microhybrid battery system using coupled thermal and electrochemical modeling. We demonstrate that using dynamic resistance acquired from drive cycle characteristics can reduce the total size of the pack compared to typical static, fixed-duration resistance values. Next, we demonstrate that using real-world environmental characteristics, driving patterns, and transient thermal analysis results in significant reduction in battery requirements and size compared to steady-state, worst-case requirements analysis.

    Other authors
    See publication

  • Optimizing Lithium-Ion Batteries - Tailoring Electrodes for Microhybrid Vehicle Applications

    SAE International Journal of Alternative Powertrains

    Design of batteries for automotive applications requires a careful balance between vehicle requirements - as driven by automakers - and cost. Typically, for batteries, the goal is to meet the most stringent requirement at a competitive cost. The real challenge in doing so is understanding how the battery-level requirements vary with changes in the vehicle, powertrain, and drive cycle. In this work, we consider the relationship between vehicle-level and battery-level requirements of microhybrid…

    Design of batteries for automotive applications requires a careful balance between vehicle requirements - as driven by automakers - and cost. Typically, for batteries, the goal is to meet the most stringent requirement at a competitive cost. The real challenge in doing so is understanding how the battery-level requirements vary with changes in the vehicle, powertrain, and drive cycle. In this work, we consider the relationship between vehicle-level and battery-level requirements of microhybrid vehicles and their linkage with battery design. These vehicle platforms demand high-power pulses for impractical durations - over 60 seconds on some drive cycles. We demonstrate a method for optimizing the battery design for fuel economy against any specific drive cycle, whether regulatory, consumer, or otherwise. This method allows for a high degree of customization against manufacturer or consumer value. Electrochemical modeling and vehicle modeling, coupled with experimental validation, is used to investigate the effects of key battery design parameters - such as particle size and coating thickness - on the energy and power capability of lithium ion batteries.

    Other authors
    • Zhenli hang
    See publication

  • Investigation of Particle Size and Coating Thickness for Pulse Performance of Automotive Lithium Ion Batteries

    ECS Transactions

    Optimization of the performance of Micro-hybrid Electric Vehicles (MHEV) requires a close match between the demands of the driving profile and the chemical and engineering characteristics of the material. Typical driving patterns present the opportunity for regenerative braking pulses that may be over 30 seconds in some cases. Our goal is to provide more opportunity for regenerative braking, particularly for high-speed, long deceleration pulses. In this work we have used electrochemical…

    Optimization of the performance of Micro-hybrid Electric Vehicles (MHEV) requires a close match between the demands of the driving profile and the chemical and engineering characteristics of the material. Typical driving patterns present the opportunity for regenerative braking pulses that may be over 30 seconds in some cases. Our goal is to provide more opportunity for regenerative braking, particularly for high-speed, long deceleration pulses. In this work we have used electrochemical modeling of NMC 1:1:1 cells to investigate the effects of particle size, coating thickness, and system capability on the energy and power capability of lithium ion batteries. We demonstrate a novel metric for evaluating the regeneration capability of a cell – recovered energy per volume, Whrecov/L – against which these effects are optimized. Finally, we have modeled lithium concentration gradients in both the electrolyte and particle surface and have identified conditions under which regeneration capability is affected.

    Other authors
    • Zhenli Zhang
    See publication

  • Sensitivity Analysis of Material Parameters on Performance of Lithium Ion Battery Using Electrochemical Modeling

    ECS Transactions

    A variety of materials variables affect the performance of an automotive lithium ion battery. Some of the most important materials parameters include dynamic transport properties of electrolyte and solid material, including ionic conductivity, electronic conductivity, reaction rate, and lithium diffusivity. Understanding the relationship between changes to these materials parameters and performance of the battery is critical to battery design. In this work, we consider the impact of the…

    A variety of materials variables affect the performance of an automotive lithium ion battery. Some of the most important materials parameters include dynamic transport properties of electrolyte and solid material, including ionic conductivity, electronic conductivity, reaction rate, and lithium diffusivity. Understanding the relationship between changes to these materials parameters and performance of the battery is critical to battery design. In this work, we consider the impact of the sensitivity of these fundamental parameters within the context of two different systems: a power cell for hybrid electric vehicles (HEV) applications, and an energy cell for electric vehicle (EV) applications. These applications are simulated using high-pulse power capability (HPPC) and constant-current discharge tests. The range of variance and sensitivity of key electrochemical parameters are presented.

    Other authors
    • Zhenli Zhang
    See publication

  • Lead-Acid State of Charge Estimation for Start-Stop Applications

    SAE International Journal of Alternative Powertrains

    Start-stop, aka engine-stop or idle-stop, technologies are increasingly being applied to automotive vehicles to increase fuel economy. Start-stop vehicles turn off the engine during periods of zero speed and/or during prolonged coast down. During engine-stop, the vehicle electronics are powered solely by the battery. To replenish the battery, the battery needs to be recharged. In typical ICE vehicles, the battery is continuously charged. However, fuel economies can be improved if strategic…

    Start-stop, aka engine-stop or idle-stop, technologies are increasingly being applied to automotive vehicles to increase fuel economy. Start-stop vehicles turn off the engine during periods of zero speed and/or during prolonged coast down. During engine-stop, the vehicle electronics are powered solely by the battery. To replenish the battery, the battery needs to be recharged. In typical ICE vehicles, the battery is continuously charged. However, fuel economies can be improved if strategic charging of the battery can be achieved through selective charging through the alternator or through regenerative braking. To optimize fuel economy, an accurate estimation of the battery state of charge (SOC) during vehicle operation is required. Although state of charge estimation has mainly focused on Li-ion batteries, lead-acid batteries may be used successfully in start-stop applications. However, SOC estimation for lead-acid batteries is particularly difficult due to side reactions and losses during charging, particularly at high SOC. This is a highly nonlinear function and requires special attention. To estimate the battery SOC, an equivalent-circuit lead-acid battery model is used to simulate the battery dynamics. This model incorporates losses associated with top charging which can affect the battery SOC estimation. In addition, parameter estimation techniques are utilized to identify the dynamic model parameters. Through this research, an online adaptive battery model can be used to estimate the lead-acid battery state of charge for start-stop applications, where the charging patterns may affect the SOC estimation.

    See publication

  • Connecting Vehicle Requirements with Battery Design and Testing: Linking Drive Cycles with Material Properties

    Society of Automotive Engineers

    Traditional testing approaches for fundamental battery materials focus on highly artificial test profiles, for example constant current (CC) or constant voltage (CV) testing. Additionally, the currents used for capacity and cycle tests are often very low. These profiles are not indicative of the types of current/voltage profiles that the battery will experience during actual vehicle operation. As a result, these simple tests may fail to sufficiently elicit the reduction in performance and…

    Traditional testing approaches for fundamental battery materials focus on highly artificial test profiles, for example constant current (CC) or constant voltage (CV) testing. Additionally, the currents used for capacity and cycle tests are often very low. These profiles are not indicative of the types of current/voltage profiles that the battery will experience during actual vehicle operation. As a result, these simple tests may fail to sufficiently elicit the reduction in performance and failure modes that occur during more dynamic cycling.
    In this paper, we outline an approach in which vehicle-level modeling is applied to regulatory drive cycles in order to derive power vs. time requirements for an energy storage system. These requirements are used to identify segments of the regulatory drive cycles that present significant challenges to the battery. Finally, the most stressing portions of the drive cycle are used to determine limiting physical characteristics of batteries. This approach allows us to accelerate materials testing and understand the potential benefits of novel materials when used on regulatory and other drive cycles.

    See publication

  • Vapor sensing using polymer/carbon black composites in the percolative conduction regime

    Langmuir

    To investigate the behavior of chemiresistive vapor sensors operating below or around the percolation threshold, chemiresistors have been formed from composites of insulating organic polymers and low mass fractions of conductive carbon black (CB, 1−12% w/w). Such sensors produced extremely large relative differential resistance changes above certain threshold vapor concentrations. At high analyte partial pressures, these sensors exhibited better signal/noise characteristics and were typically…

    To investigate the behavior of chemiresistive vapor sensors operating below or around the percolation threshold, chemiresistors have been formed from composites of insulating organic polymers and low mass fractions of conductive carbon black (CB, 1−12% w/w). Such sensors produced extremely large relative differential resistance changes above certain threshold vapor concentrations. At high analyte partial pressures, these sensors exhibited better signal/noise characteristics and were typically less mutually correlated in their vapor response properties than composites formed using higher mass fractions of CB in the same set of polymer sorption layers. The responses of the low-mass-fraction CB sensors were, however, less repeatable, and their nonlinear response as a function of analyte concentration required more complicated calibration schemes to identify and quantify analyte vapors to compensate for drift of a sensor array and to compensate for variability in response between sensor arrays. Because of their much larger response signals, the low-mass-fraction CB sensors might be especially well suited for use with low-precision analog-to-digital signal readout electronics. These sensors serve well as a complement to composites formed from higher mass fractions of CB and have yielded insight into the tradeoffs of signal-to-noise improvements vs complexity of signal processing algorithms necessitated by the use of nonlinearly responding detectors in array-based sensing schemes.

    See publication
Join now to see all publications

Patents

  • Architectures for batteries having two different chemistries

    Issued 11731530

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system…

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.

    Other inventors
    See patent

  • Switched passive architectures for batteries having two different chemistries

    Issued US 10062892

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system…

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage

    Other inventors
    See patent

  • Passive architectures for batteries having two different chemistries

    Issued US 10020485

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system…

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.

    Other inventors
    See patent

  • Passive architectures for batteries having two different chemistries

    Issued US 9718375

    A 12 volt automotive battery system includes a first battery directly coupled to an electrical system, in which the first battery includes a first battery chemistry, and a second battery coupled in parallel with the first battery and directly coupled to the electrical system, in which the second battery includes a second battery chemistry with a higher coulombic efficiency than the first battery chemistry. The first battery and the second battery are non-voltage matched such that a voltage…

    A 12 volt automotive battery system includes a first battery directly coupled to an electrical system, in which the first battery includes a first battery chemistry, and a second battery coupled in parallel with the first battery and directly coupled to the electrical system, in which the second battery includes a second battery chemistry with a higher coulombic efficiency than the first battery chemistry. The first battery and the second battery are non-voltage matched such that a voltage range of the second battery is higher than a voltage range of the first battery. The first battery steers power generated during regenerative braking to the second battery using internal resistance of the first battery to enable the second battery to capture a majority of the power generated during regenerative braking, and the second battery provides power to the electrical system due to the higher voltage range of the second battery when the second battery has a positive state of charge.

    Other inventors
    • Daniel Le
    See patent

  • Optimized fuzzy logic controller for energy management in micro and mild hybrid electric vehicles

    Issued US 9669724

    An energy storage system of a vehicle includes an energy storage device, a regulation device coupled to the energy storage device, one or more sensing devices for sensing current levels, voltage levels, temperature levels, and/or pressure levels of the energy storage device and/or on components thereof, and a control unit configured to determine dynamically a power flow in/out of the energy storage device using a fuzzy logic approach. The regulation device is configured to regulate at least one…

    An energy storage system of a vehicle includes an energy storage device, a regulation device coupled to the energy storage device, one or more sensing devices for sensing current levels, voltage levels, temperature levels, and/or pressure levels of the energy storage device and/or on components thereof, and a control unit configured to determine dynamically a power flow in/out of the energy storage device using a fuzzy logic approach. The regulation device is configured to regulate at least one of a voltage level, a current level, and any additional state parameter of the energy storage device

    See patent

  • Lead acid state of charge estimation for auto-stop applications

    Issued US 9,625,533

    The present disclosure describes a method that includes predicting terminal voltage of a battery module in a vehicle using a battery control module. Predicting the terminal voltage includes determining a gassing current of the battery module using a gassing current model, in which the gassing current quantifies terminal current that is not used to charge the battery module, and calculating the predicted terminal voltage based at least in part on a measurement model and the determined gassing…

    The present disclosure describes a method that includes predicting terminal voltage of a battery module in a vehicle using a battery control module. Predicting the terminal voltage includes determining a gassing current of the battery module using a gassing current model, in which the gassing current quantifies terminal current that is not used to charge the battery module, and calculating the predicted terminal voltage based at least in part on a measurement model and the determined gassing current. The method also includes measuring terminal voltage of the battery module using a sensor communicatively coupled to the battery control module, and determining a corrected state of the battery module using the battery control module by minimizing a difference between the predicted terminal voltage and the measured terminal voltage. In other words, the corrected state of the battery (e.g., corrected state of charge) may be more accurately determined using the measurement model and the gassing current model.

    Other inventors
    • Daniel le
    See patent

  • Dual Energy Storage System for Micro Hybrid Vehicles

    Issued US 9487090

    An energy storage system of a vehicle includes a first energy storage device and a second energy storage device, a voltage and current regulator device coupled to the first and second energy storage devices, a control unit for controlling the regulator device, and a plurality of sensing devices for sensing current input signals and voltage input signals to at least one of the first and second energy storage devices.

    See patent

  • Switched passive architectures for batteries having two different chemistries

    Issued US 9527402

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system…

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery include a first battery chemistry, and a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a first switch, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The first switch couples the second battery to the electrical system during regenerative braking to enable the second battery to capture a majority of the power generated during regenerative braking. The 12 volt automotive battery system further includes a variable voltage alternator that outputs a first voltage during regenerative braking to charge the second battery and a second voltage otherwise, in which the first voltage is higher than the second voltage.

    Other inventors
    See patent

  • Unitary Energy Storage and Sensing Batteries

    Issued US 9,356,327

    A battery apparatus having an electrochemical cell that includes an electrically insulating hollow mandrel, a pair of active materials wound on the mandrel, and a sensing unit located within the mandrel and coupled to the pair of active materials through a pair of contacts. The active materials are connected and separated by an electrolyte. The sensing unit is configured to monitor conditions of the cell and to generate a signal indicative of a sensed condition for communication to a battery…

    A battery apparatus having an electrochemical cell that includes an electrically insulating hollow mandrel, a pair of active materials wound on the mandrel, and a sensing unit located within the mandrel and coupled to the pair of active materials through a pair of contacts. The active materials are connected and separated by an electrolyte. The sensing unit is configured to monitor conditions of the cell and to generate a signal indicative of a sensed condition for communication to a battery management unit.

    Other inventors
    See patent

  • Cooling strategy for battery systems

    Filed US 20160107526

    A control module that controls operation of a regenerative dual battery system by: determining a predicted driving pattern over a prediction horizon using a driving pattern recognition model based in part on a battery current and a previous driving pattern; determining a predicted battery resistance of the first battery module over the prediction horizon using a recursive battery model based in part on the predicted driving pattern, the battery current, a present bus voltage, and a previous bus…

    A control module that controls operation of a regenerative dual battery system by: determining a predicted driving pattern over a prediction horizon using a driving pattern recognition model based in part on a battery current and a previous driving pattern; determining a predicted battery resistance of the first battery module over the prediction horizon using a recursive battery model based in part on the predicted driving pattern, the battery current, a present bus voltage, and a previous bus voltage; determining a target trajectory of a battery temperature of the first battery module over a control horizon using an objective function; and controlling magnitude and duration of electrical power supplied from the regenerative such that a predicted trajectory of the battery temperature is guided toward the target trajectory of the battery temperature during the control horizon.

    See patent

  • Predicted sensor information for a battery

    Issued US 9,318,781

    A computer-implemented method for predicting a value of a cell parameter is provided, wherein the cell is one of a plurality of cells of a battery pack. The method includes determining which other different conditions of the cell and which similar and/or different conditions of any other cell of the plurality of cells correlate with the cell condition, determining values of one or more parameters from the same cell or any other cell of the plurality of cells that correspond to the determined…

    A computer-implemented method for predicting a value of a cell parameter is provided, wherein the cell is one of a plurality of cells of a battery pack. The method includes determining which other different conditions of the cell and which similar and/or different conditions of any other cell of the plurality of cells correlate with the cell condition, determining values of one or more parameters from the same cell or any other cell of the plurality of cells that correspond to the determined conditions that correlate with the cell condition, and predicting the value of the cell parameter based on the determined values.

    See patent

  • Energy storage control system and method

    Issued US 9,085,238

    A system for providing power to a power network includes an energy storage device connected to the power network, a sensor connected with the energy storage device for measuring a state of the energy storage device during a rest period, which corresponds to a time span during which a current through the energy storage device is reduced to a level that enables an estimation of a state of the energy storage device. The system further includes a controller connected to the sensor for measuring a…

    A system for providing power to a power network includes an energy storage device connected to the power network, a sensor connected with the energy storage device for measuring a state of the energy storage device during a rest period, which corresponds to a time span during which a current through the energy storage device is reduced to a level that enables an estimation of a state of the energy storage device. The system further includes a controller connected to the sensor for measuring a state of the energy storage device. The controller selectively establishes rest periods for the energy storage device. The rest periods are established by optimizing between minimization of disruption to normal operation and a need to update a measurement of the state of the energy storage device.

    See patent

  • System and method for optimizing the storing of vehicular energy

    Issued US 9,061,599

    A system for storing electrically a regenerative energy of a vehicle is provided. The system includes a first energy storage device, a second energy storage device, an energy regulating device coupled to the first and second energy storage devices, a source of regenerative power configured to capture a regenerative energy during a regenerative power event of the vehicle, and a control unit coupled to the energy regulating device. The control unit is configured to transfer electrical energy from…

    A system for storing electrically a regenerative energy of a vehicle is provided. The system includes a first energy storage device, a second energy storage device, an energy regulating device coupled to the first and second energy storage devices, a source of regenerative power configured to capture a regenerative energy during a regenerative power event of the vehicle, and a control unit coupled to the energy regulating device. The control unit is configured to transfer electrical energy from the first energy storage device to the second energy storage device based on a prediction of the regenerative power event using the energy regulating device. The transfer of the electrical energy serves to reduce the electrical energy stored in the first energy storage device thereby enabling the first energy storage device to receive from the regenerative power device when the predicted regenerative power event occurs an amount of the electrical regenerative energy.

    See patent

  • Vehicle accessory load controller and method

    Issued US 9,043,085

    A system includes a source of regenerative power that generates power during a regenerative event, an electrical energy storage system connected with the source of regenerative power to receive and store regenerative power during the regenerative event, an accessory load that reduces an amount of energy stored in the energy storage system when being powered, a source of information, and an accessory load controller. The accessory load controller is responsive to the source of information to…

    A system includes a source of regenerative power that generates power during a regenerative event, an electrical energy storage system connected with the source of regenerative power to receive and store regenerative power during the regenerative event, an accessory load that reduces an amount of energy stored in the energy storage system when being powered, a source of information, and an accessory load controller. The accessory load controller is responsive to the source of information to estimate when a next occurrence of a regeneration event will occur, predict whether the energy storage device will be in a state of charge condition to receive regenerative power at the time of the predicted regeneration event, and control an application of electrical power to the accessory load based on the prediction in order to reduce the amount of energy stored in the energy storage device and minimize any loss of regenerative power during a next regenerative event.

    See patent

  • System and method for controlling the voltage on a power network

    Issued US 8,996,227

    A power control system for controlling a power network of a hybrid electrical vehicle, is provided. The power control system includes a power generating unit, one or more energy storage units coupled to a power converting unit, an electrical load. The power control system further includes a control logic module for controlling the power generating unit and the power converting unit. The control logic module is configured to identify a power demand from the electrical load and to select the…

    A power control system for controlling a power network of a hybrid electrical vehicle, is provided. The power control system includes a power generating unit, one or more energy storage units coupled to a power converting unit, an electrical load. The power control system further includes a control logic module for controlling the power generating unit and the power converting unit. The control logic module is configured to identify a power demand from the electrical load and to select the power generating unit or one of the one or more energy storage units to control a voltage level of the power network based on the identified power demand, based on electrical characteristics of the power generating unit, of the power converting unit, and of the electrical load, and based on a current mode of operation of the vehicle.

    See patent

  • Systems and methods for controlling multiple storage devices

    Issued US 8,957,623

    A patent for vehicle energy storage systems consisting of more than one storage device - for instance, a lead-acid battery coupled to a lithium-ion battery. The patent covers methods for regulating and optimizing the use of such batteries, in order to maximize performance.

    See patent

  • Semi-active architectures for batteries having two different chemistries

    US 9527401

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery includes a first battery chemistry. The first battery is charged with a relatively constant first voltage, in which an alternator outputs the relatively constant first voltage. The 12 volt automotive battery system further includes a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a DC/DC converter, in which the…

    A 12 volt automotive battery system includes a first battery coupled to an electrical system, in which the first battery includes a first battery chemistry. The first battery is charged with a relatively constant first voltage, in which an alternator outputs the relatively constant first voltage. The 12 volt automotive battery system further includes a second battery coupled in parallel with the first battery and selectively coupled to the electrical system via a DC/DC converter, in which the second battery includes a second battery chemistry that has a higher coulombic efficiency than the first battery chemistry. The DC/DC converter boosts the first voltage to a second voltage to charge the second battery during regenerative braking, in which the second voltage is higher than a maximum charging voltage of the first battery.

    Other inventors
    • daniel li
    See patent

Honors & Awards

  • Lloyd L. Withrow Distinguished Speaker Award.

    Society of Automotive Engineers

    --From SAE: The award recognizes individuals who have demonstrated outstanding presentation skills. The intent of the award is to maintain a high level of presentations at SAE technical sessions by recognizing individuals who make outstanding presentations at those sessions.
    http://awards.sae.org/withrow/

  • Excellent Oral Presentation Award

    Society of Automotive Engineers

    Award for Excellent Oral Presentation at SAE World Convress, for presentation entitled "Integrating Thermal and Electrochemical Modeling of Lithium-ion Batteries to Optimize Requirements Compliance".

  • Excellent Oral Presentation Award

    Society of Automotive Engineers

    Award for Excellent Oral Presentation at SAE World Congress, for presentation entitled "Optimizing Lithium-Ion Batteries-Tailoring Electrodes for Microhybrid Vehicle Applications"

  • Excellent Oral Presentation Award

    Society of Automotive Engineers

    Award for Excellent Oral Presentation at SAE World Congress, for presentation entitled "Connecting Vehicle Requirements with Battery Design and Testing: Linking Drive Cycles with Material Properties"

  • 2013 Merit Award

    Johnson Controls Power Solutions

    Award presented for 48V Micro-Hybrid research and development. My contribution was leading the modeling/simulation team that projected the fuel economy benefit of Micro-hybrid technology, and developed control and optimization strategies to get the most out of the system.

Languages

  • German

    -

Organizations

  • Electrochemical Society

    -

    - Present

  • IEEE

    -

    - Present

  • Society of Automotive Engineers

    -

    - Present

More activity by Brian

View Brian’s full profile

  • See who you know in common
  • Get introduced
  • Contact Brian directly
Join to view full profile

Other similar profiles

Explore top content on LinkedIn

Find curated posts and insights for relevant topics all in one place.

View top content

Others named Brian Sisk in United States

47 others named Brian Sisk in United States are on LinkedIn

See others named Brian Sisk

Add new skills with these courses

See all courses