Patents by Inventor Venkata Prasad Atluri

Venkata Prasad Atluri 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).

  • Patent number: 11938839
    Abstract: A system in a vehicle includes two or more smart battery packs to power drive units of the vehicle to move the vehicle. Each of the two or more smart battery packs includes a battery pack, and a battery management system (BMS) to monitor a state of charge of the battery pack. An energy distribution unit facilitates charge transfer among the two or more smart battery packs.
    Type: Grant
    Filed: June 7, 2022
    Date of Patent: March 26, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Chinmaya Patil, Norman K. Bucknor
  • Patent number: 11929615
    Abstract: A system includes a battery system including a plurality of batteries and configured to be selectively coupled to and charged by a renewable energy source and selectively coupled to and charged by a power grid. The system further includes a DC bus shared by a plurality of loads and an energy management system connected between the battery system and the plurality of loads. The energy management system is configured to selectively connect individual ones of the plurality of batteries to at least one of the plurality of loads via the DC bus, selectively connect the battery system to the power grid and disconnect the battery system from the power grid, and selectively connect at least one of the plurality of loads directly to the power grid.
    Type: Grant
    Filed: February 11, 2022
    Date of Patent: March 12, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Ian J. Sutherland, Paul M. Najt, Chandra S. Namuduri
  • Patent number: 11916414
    Abstract: A protection system for a battery system includes a battery control module configured to selectively open at least one contactor to isolate the battery system from a load in response to a sensed current being greater than a first threshold and within a first current range, at least one fuse connected between first and second terminals of the battery system and configured to open to isolate the battery system from the load in response to the sensed current being greater than a second threshold and within a second current range that is greater than and offset from the first current range, and an auxiliary protection module configured to selectively form a short circuit between first and second terminals in response to the sensed current being greater than the first threshold, less than the second threshold, and within a coverage gap region between the first and second current ranges.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: February 27, 2024
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Suresh Gopalakrishnan, Mark Daniel Gottlieb, Madhusudan Raghavan, Chandra S. Namuduri
  • Publication number: 20240055733
    Abstract: A battery module includes: a positive terminal disposed on an exterior of a housing of the battery module; a negative terminal disposed on the exterior of the housing of the battery module; groups of two or more cylindrical battery cells electrically connected in parallel; and electrically conductive bus bars that electrically connect the groups in series, that electrically connect positive terminals of the cylindrical battery cells of a first one of the groups with the positive terminal of the battery module, and that electrically connect negative terminals of the cylindrical battery cells of a second one of the groups with the negative terminal of the battery module.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Chinmaya PATIL, Venkata Prasad Atluri, Teresa U. Holiness-Stalling
  • Publication number: 20240055717
    Abstract: A battery module includes: positive and negative terminals disposed on an exterior of a housing of the battery module; groups of cylindrical battery cells, each of the battery cells of each group having a positive and negative terminals, and a vent; and electrically conductive busbars that electrically connect the groups, that electrically connect positive terminals of the battery cells of a first one of the groups with the positive terminal of the battery module, and that electrically connect negative terminals of the battery cells of a second one of the groups with the negative terminal of the battery module; and a thermal runaway protection blanket including: a first surface; a second surface opposite the first surface; and recessed portions that are recessed relative to the second surface and that extend toward the first surface, where the vents of at least a portion of the battery cells face the recessed portions.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Chinmaya Patil, Venkata Prasad Atluri, Teresa U. Holiness-Stalling
  • Publication number: 20240055686
    Abstract: A battery module includes: positive and negative terminals disposed on an exterior of a housing of the battery module; groups of two or more cylindrical battery cells, each of the battery cells of each group having positive and negative terminals; and electrically conductive busbars that electrically connect the groups, that electrically connect positive terminals of the battery cells of a first one of the groups with the positive terminal of the battery module, and that electrically connect negative terminals of the battery cells of a second one of the groups with the negative terminal of the battery module; and a cooling plate including: first and second second planar plates; and a coolant channel plate that is sandwiched between the first and second planar plates that includes: an inlet; an outlet; and a coolant channel that extends in at least two different directions.
    Type: Application
    Filed: August 15, 2022
    Publication date: February 15, 2024
    Inventors: Venkata Prasad ATLURI, Chinmaya PATIL, Madhusudan RAGHAVAN, Teresa U. HOLINESS-STALLING
  • Patent number: 11843134
    Abstract: A power control system for a battery system of a vehicle includes a first contactor, a second contactor, N fuses and N vehicle loads. An active sacrificial protection device includes a third contactor and a first fuse. The active sacrificial protection device is connected to a positive or negative terminal of the battery system. A current sensor is configured to sense a measured load current flowing through one of the first contactor and the second contactor. A battery management module is configured to selectively close the third contactor to reduce current flowing through one of the first contactor or the second contactor and selectively open the one of the first contactor or the second contactor after closing the third contactor.
    Type: Grant
    Filed: November 10, 2021
    Date of Patent: December 12, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mark Daniel Gottlieb, Venkata Prasad Atluri, Madhusudan Raghavan
  • Publication number: 20230391227
    Abstract: A system in a vehicle includes two or more smart battery packs to power drive units of the vehicle to move the vehicle. Each of the two or more smart battery packs includes a battery pack, and a battery management system (BMS) to monitor a state of charge of the battery pack. An energy distribution unit facilitates charge transfer among the two or more smart battery packs.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 7, 2023
    Inventors: Venkata Prasad Atluri, Chinmaya Patil, Norman K. Bucknor
  • Publication number: 20230391460
    Abstract: A system in an electric vertical take-off and landing (eVTOL) aircraft includes two or more subsystems. Each subsystem includes an energy storage systems (ESS). Each ESS is coupled to one or more motors that actuate one or more rotors of the eVTOL aircraft and includes one or more energy sub-packs and one or more power sub-packs. The one or more power sub-packs supply more power than the one or more energy sub-packs and the one or more energy sub-packs supply consistent power for a longer duration than the one or more power sub-packs. The system also includes one or more inter-subsystem switches to electrically isolate or connect adjacent ones of the two or more subsystems.
    Type: Application
    Filed: June 7, 2022
    Publication date: December 7, 2023
    Inventors: Venkata Prasad Atluri, Madhusudan Raghavan, Shuonan Xu, Hanho Yun
  • Publication number: 20230365012
    Abstract: A charging system for a vehicle includes a conversion device configured to transfer an electric charge between a battery assembly of the vehicle and an energy storage system, the battery assembly having a first voltage and the energy storage system having a second voltage, the conversion device including a scalable buck-boost system having a plurality of buck-boost modules. Each buck-boost module of the plurality of buck-boost modules includes a set of switches and an inductor. The charging system also includes a controller configured to operate one or more buck-boost modules of the plurality of buck-boost modules during transfer of charge between the battery assembly and the energy storage system.
    Type: Application
    Filed: May 12, 2022
    Publication date: November 16, 2023
    Inventors: Chandra S. Namuduri, Lei Hao, Rashmi Prasad, Rasoul Hosseini, Venkata Prasad Atluri, Chengwu Duan
  • Publication number: 20230361591
    Abstract: A battery pack includes: first battery modules, the first battery modules each including first battery cells having a first battery cell chemistry and not including second battery cells having a second battery cell chemistry that is different than the first battery cell chemistry; second battery modules, the second battery modules each including the second battery cells having the second battery cell chemistry and not including the first battery cells having the first battery chemistry; switches; and a switch control module configured to actuate the switches and control charging and discharging of the first and second battery modules.
    Type: Application
    Filed: May 9, 2022
    Publication date: November 9, 2023
    Inventors: Srikanth ARISETTY, Venkata Prasad ATLURI, Charles W. WAMPLER, II, Chandra S. NAMUDURI, Raghunathan K
  • Publication number: 20230335291
    Abstract: A system includes a transceiver configured to communicate health data to a remote server, one or more processors in communication with the transceiver wherein the one or more processors are programmed to receive an input at a user interface of the system, activate a switch to activate one or more sensors in communication with the system, wherein the one or more sensors are configured to collect one or more of an image of the user, temperature data, blood pressure data, heart rate data, glucose data, or echocardiogram data, send data via the wireless transceiver, to the remote server to identify one or more health conditions associated with the user, and in response to the identifying the one or more health conditions exceeding a threshold, output a report indicative of one or more health assessments indicating a condition or an illness associated with the user.
    Type: Application
    Filed: April 18, 2023
    Publication date: October 19, 2023
    Inventors: Venkata Prasad ATLURI, Virith KAZA
  • Publication number: 20230335870
    Abstract: A system in a vehicle includes two or more modules. Each of the two or more modules includes battery cell groups. The battery cell groups of the two or more modules provide propulsion power for the vehicle. The two or more modules also include a voltage sensor to measure a voltage output by the battery cell groups of the module, a temperature sensor arranged to measure a temperature within the module, a gas sensor arranged to sense a hydrogen level within the module, and an infrared sensor positioned to obtain an infrared radiation profile within the module. The system also includes two or more relays, one of the two or more relays being arranged to electrically isolate one of the two or more modules based on the voltage, the temperature, the hydrogen level, or the infrared radiation profile for the one of the two or more modules.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 19, 2023
    Inventors: Venkata Prasad Atluri, Jeremie Dernotte, Suresh Gopalakrishnan, Chandra S. Namuduri
  • Publication number: 20230261469
    Abstract: A system includes a battery system including a plurality of batteries and configured to be selectively coupled to and charged by a renewable energy source and selectively coupled to and charged by a power grid. The system further includes a DC bus shared by a plurality of loads and an energy management system connected between the battery system and the plurality of loads. The energy management system is configured to selectively connect individual ones of the plurality of batteries to at least one of the plurality of loads via the DC bus, selectively connect the battery system to the power grid and disconnect the battery system from the power grid, and selectively connect at least one of the plurality of loads directly to the power grid.
    Type: Application
    Filed: February 11, 2022
    Publication date: August 17, 2023
    Inventors: Venkata Prasad ATLURI, Ian J. Sutherland, Paul M. Najt, Chandra S. Namuduri
  • Publication number: 20230242008
    Abstract: A power control system for a battery system of a vehicle includes one or more supplemental protection devices that are connected to at least one of a first contactor, a second contactor, one of N fuses, and one of N vehicle loads. A battery management module is configured to measure and store a plurality of state of health parameters for the battery system and to selectively operate the one or more supplemental protection devices in a coverage gap between first and second coverage areas handled by the first contactor and the second contactor and the N fuses based on a calibration function and/or calibration parameters. A telematics system selectively sends the plurality of state of health parameters for the battery system to a remote server and to receive at least one of a new calibration function and new calibration parameters for the vehicle from the remote server.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 3, 2023
    Inventors: Mark Daniel GOTTLIEB, Venkata Prasad ATLURI, Madhusudan RAGHAVAN, Chandra S. NAMUDURI, Suresh GOPALAKRISHNAN
  • Patent number: 11712977
    Abstract: A system to extend a towing range and maneuverability of an automobile vehicle during a towing operation includes a battery-electric-vehicle (BEV) having a vehicle energy pack providing operational energy to the BEV. A powered trailer is releasably connected to the BEV. A trailer module is provided with the powered trailer, the trailer module communicating between the powered trailer and the BEV. A propulsion unit is provided with the powered trailer and is in communication with trailer module and with the BEV using the trailer module. The propulsion unit enhances launch of the BEV and provides an acceleration assist to the BEV.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: August 1, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Norman K. Bucknor, Madhusudan Raghavan, Venkata Prasad Atluri
  • Publication number: 20230208159
    Abstract: A protection system for a battery system includes a battery control module configured to selectively open at least one contactor to isolate the battery system from a load in response to a sensed current being greater than a first threshold and within a first current range, at least one fuse connected between first and second terminals of the battery system and configured to open to isolate the battery system from the load in response to the sensed current being greater than a second threshold and within a second current range that is greater than and offset from the first current range, and an auxiliary protection module configured to selectively form a short circuit between first and second terminals in response to the sensed current being greater than the first threshold, less than the second threshold, and within a coverage gap region between the first and second current ranges.
    Type: Application
    Filed: December 27, 2021
    Publication date: June 29, 2023
    Inventors: Venkata Prasad Atluri, Suresh Gopalakrishnan, Mark Daniel Gottlieb, Madhusudan Raghavan, Chandra S. Namuduri
  • Publication number: 20230150378
    Abstract: A power control system for a vehicle includes a charge port and a contactor connected to the charge port and including a first plurality of switches. An energy storage system includes a second plurality of switches and one or more battery packs. A bi-directional DC-DC converter is connected between the energy storage system and a plurality of vehicle loads. A controller is configured to control states of the first and second plurality of switches to configure in a plurality of modes including a range improvement mode, a first charging mode to perform charging at a first voltage level, a second charging mode to perform charging at a second voltage level, a battery preconditioning mode; and an accessory load support mode.
    Type: Application
    Filed: December 14, 2021
    Publication date: May 18, 2023
    Inventors: Lei HAO, Chandra S. NAMUDURI, Chengwu DUAN, Suresh GOPALAKRISHNAN, Neeraj S. SHIDORE, Venkata Prasad ATLURI
  • Publication number: 20230147014
    Abstract: A power control system for a battery system of a vehicle includes a first contactor, a second contactor, N fuses and N vehicle loads. An active sacrificial protection device includes a third contactor and a first fuse. The active sacrificial protection device is connected to a positive or negative terminal of the battery system. A current sensor is configured to sense a measured load current flowing through one of the first contactor and the second contactor. A battery management module is configured to selectively close the third contactor to reduce current flowing through one of the first contactor or the second contactor and selectively open the one of the first contactor or the second contactor after closing the third contactor.
    Type: Application
    Filed: November 10, 2021
    Publication date: May 11, 2023
    Inventors: Mark Daniel GOTTLIEB, Venkata Prasad ATLURI, Madhusudan RAGHAVAN
  • Patent number: 11603005
    Abstract: An apparatus for charging an electric vehicle includes a plug command center having data identifying an availability of an amount of energy which is available for transfer from a first battery system of a first battery electric vehicle (BEV) to a second BEV. A charging adapter provides for energy transfer between a first plug of the first BEV and a second plug of the second BEV. A V2V charging controller communicates data identifying a battery system charge state of the first BEV and a battery system charge state of the second BEV and selects between multiple available charging options.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: March 14, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Venkata Prasad Atluri, Hanho Yun, Chandra S. Namuduri, Madhusudan Raghavan, Venkatesh Gopalakrishnan