Patents by Inventor Prasad Dev Hanumalagutti

Prasad Dev Hanumalagutti 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: 20190222091
    Abstract: A vehicle electric machine assembly including a stator core and a terminal block is provided. The stator core includes one or more three-phase terminals connected to end windings. The terminal block includes a connector for each of the three-phase terminals. A portion of the end windings extending from the stator core, the three-phase terminals, and the terminal block are overmolded as a single unit such that a portion of each of the connectors is exposed for connection to an inverter. The terminal block may further include one or more threaded apertures, each sized to receive a threaded stud to facilitate an electrical connection between one of the one or more three-phase terminals and the inverter. Each of the one or more three-phase terminals may extend axially along an axis substantially parallel to a central axis of a rotor disposed within a cavity defined by the stator core.
    Type: Application
    Filed: January 12, 2018
    Publication date: July 18, 2019
    Applicant: Ford Global Technologies, LLC
    Inventors: Michael W. Degner, Prasad Dev Hanumalagutti, Franco Leonardi
  • Patent number: 10181765
    Abstract: An electric machine for a vehicle may include a stator, a rotor, and a coolant channel assembly. The stator may include a core defining a cavity and windings disposed within and partially protruding out of the cavity. The rotor may be sized for disposal within the cavity adjacent the windings. The coolant channel assembly may include a channel wound about the partially protruding windings such that the channel and windings are in thermal communication with one another. The coolant channel may define a circular or rectangular cross-section. The coolant channel may define fins therein to induce turbulence into coolant flowing therethrough. The coolant channel and the windings may be arranged such that the coolant channel assembly directly contacts the windings. The coolant channel assembly may be wound such that a portion of the coolant channel assembly is partially disposed between the plurality of base portions.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: January 15, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner
  • Patent number: 10135319
    Abstract: A vehicle electric machine includes a stator having an end face and a yoke region defining a channel. End windings are adjacent to the end face. An annular cover has inner and outer walls defining an annular cavity configured to receive the end windings. The channel opens into the cavity, and a radial distance between the inner and outer walls is less than or equal to a radial length of the end face.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: November 20, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi, Edward Chan-Jiun Jih
  • Patent number: 10097066
    Abstract: An electric machine for a vehicle includes a stator having slots and a yolk region defining a plurality of channels extending between the opposing end faces of the stator. Windings extend through the slots and have end windings adjacent to the end faces. A rotor is disposed within the stator. The electric machine also includes first and second annular covers each defining a cavity having a plurality of walls partitioning the cavity into a plurality of cooling chambers that are circumferentially isolated from each other. Each of the covers is attached to one of the end faces such that a corresponding one of the end windings is disposed within one of the cavities, and such that each of the channels is in direct fluid communication with a corresponding one of the cooling chambers of the first cover and with a corresponding one of the cooling chambers of the second cover.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: October 9, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi, Edward Chan-Jiun Jih
  • Patent number: 10086538
    Abstract: A cover for a housing of an electric machine is provided. The cover may include an inner sidewall and an outer sidewall. The outer sidewall may be spaced apart from the inner sidewall to define a coolant channel therebetween. The inner sidewall and outer sidewall may be defined by an interior surface of the cover such that the coolant channel receives end windings of a stator of the electric machine when the cover is secured to the housing. The interior surface of the cover may define features between the sidewalls to promote turbulence of coolant flowing through the coolant channel. The interior surface of the cover may define a meandering trough between the sidewalls to form a predetermined coolant path relative to a location of the end windings when the cover is secured to the housing.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: October 2, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Edward Chan-Jiun Jih, Guangyin Lei, Franco Leonardi
  • Patent number: 10069379
    Abstract: An electric motor system includes a stator and a cover. The stator has windings that are affixed to an end periphery of the stator. The cover is secured to stator and defines a channel and a plenum. The channel extends along the end periphery and is configured to direct cooling fluid about the windings. The plenum extends over at least twenty percent of an outer perimeter of the cover and is configured to direct cooling fluid into the channel.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: September 4, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Becky Sue Morris
  • Patent number: 10038351
    Abstract: An electric machine for an electrified vehicle is provided. The electric machine may include a stator, a ring plate, an encasement, and a fastener. The stator defines a cavity, a stator recess about a portion of the cavity, and a stator aperture. The stator may include windings disposed within and partially protruding out of the cavity. The ring plate may be sized for disposal within the stator recess, and may define a tab and a plate aperture for alignment with the stator aperture. The encasement may define a key sized for engagement with the tab to secure the encasement to the ring plate, and a closed coolant channel. The fastener may be sized for insertion within the apertures to secure the plate to the stator. The stator, ring plate, and encasement may be arranged with one another such that the partially protruding windings are disposed within the closed coolant channel.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: July 31, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi
  • Patent number: 10008907
    Abstract: An electric machine includes a stator. The stator has a plurality of slots defined between a plurality of laminated protrusions. A plurality of wire windings is disposed in the slots. The wire windings form end windings at respective ends of the stator. A cover is disposed about the end windings. A coolant chamber is defined between an inner surface of the cover and the stator. The cover includes a plurality of flow disruption members extending from the inner surface into the coolant chamber.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 26, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner
  • Patent number: 10008908
    Abstract: A vehicle electric machine includes a rotor, and a stator having a core with an end face and end windings adjacent to the end face. An annular cooling trough has an outer sidewall and a bottom. The trough is connected to the end face such that the bottom engages the core, and the sidewall, bottom and end face cooperate to define an open channel around the end windings configured to receive fluid therein.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: June 26, 2018
    Assignee: Ford Global Technologies, LLC
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi
  • Publication number: 20180054107
    Abstract: An electric machine includes a stator with a core having an end face and a plurality of conductors forming windings that extend adjacent to the end face defining end turns having a toroidal outline. The end turns are formed to define at least one channel in the end turns that traverses the end turns for increasing a surface area for fluid contact and directing a flow of fluid along the toroidal surface.
    Type: Application
    Filed: August 22, 2016
    Publication date: February 22, 2018
    Inventors: Franco LEONARDI, Prasad Dev HANUMALAGUTTI, Michael W. DEGNER
  • Publication number: 20170310190
    Abstract: A vehicle electric machine may include a stator having end windings extending axially from the stator. A rotor may be disposed within the stator and including an endcap having an outer face defining outlets and a furrowed outer periphery with an edge configured to distribute coolant released from the outlets onto the outer face to different axial locations of the end windings during rotation. The furrowed outer periphery may taper toward an in inner flat portion. The outlets may be contained within the inner flat portion. The furrowed outer periphery may be symmetric about any axis perpendicular to and passing through an axis of rotation of the rotor. The outer face may further define channels extending from the outlets to the edge. The channels may be recessed in the outer face. The furrowed outer periphery may define concentric circumferential ridges.
    Type: Application
    Filed: April 26, 2016
    Publication date: October 26, 2017
    Inventors: Michael W. Degner, Edward Chan-Jiun Jih, Tienli Wang, Prasad Dev Hanumalagutti
  • Publication number: 20170310189
    Abstract: A vehicle electric machine may include a rotor. The rotor may cooperate with a stator including a core having an end face, and end windings extending from the end face. A cooling tunnel may encase the end windings, sealing against the end face at opposing sides of the end windings, and defining an inlet configured to receive coolant. The cooling tunnel may be arranged to contain the coolant during passage over the end windings and direct the coolant toward an outlet.
    Type: Application
    Filed: April 25, 2016
    Publication date: October 26, 2017
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi
  • Publication number: 20170279329
    Abstract: A system for a vehicle includes a transmission housing, and an electric machine including a stator core disposed within the housing such that the housing and core define a channel circumscribing a body of the core. The channel is configured to circulate pressurized transmission coolant and to permit seepage of the coolant into a clearance between the housing and core caused by surface roughness of the housing and core to envelop the core with the coolant.
    Type: Application
    Filed: March 28, 2016
    Publication date: September 28, 2017
    Inventors: Prasad Dev HANUMALAGUTTI, Michael W. DEGNER, Edward Chan-Jiun JIH, Tienli WANG
  • Publication number: 20170267055
    Abstract: An encasement of an electric machine of an electrified vehicle is provided. The encasement may include a base sidewall, an inner sidewall, and an outer sidewall. The inner sidewall may extend in a circular pattern about the base sidewall. The outer sidewall may extend from the base sidewall and may be spaced apart from the inner sidewall to define a coolant channel at least partially surrounding end windings of a stator of the electric machine. The base sidewall may define features between the sidewalls to promote turbulence of coolant flowing through the coolant channel. The base sidewall may define a meandering trough between the sidewalls to form a predetermined coolant path relative to a location of the end windings.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi
  • Publication number: 20170271955
    Abstract: A vehicle electric machine includes a stator having an end face and a yoke region defining a channel. End windings are adjacent to the end face. An annular cover has inner and outer walls defining an annular cavity configured to receive the end windings. The channel opens into the cavity, and a radial distance between the inner and outer walls is less than or equal to a radial length of the end face.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev HANUMALAGUTTI, Michael W. DEGNER, Franco LEONARDI, Edward Chan-Jiun JIH
  • Publication number: 20170271956
    Abstract: An electric machine for a vehicle includes a stator having slots and a yolk region defining a plurality of channels extending between the opposing end faces of the stator. Windings extend through the slots and have end windings adjacent to the end faces. A rotor is disposed within the stator. The electric machine also includes first and second annular covers each defining a cavity having a plurality of walls partitioning the cavity into a plurality of cooling chambers that are circumferentially isolated from each other. Each of the covers is attached to one of the end faces such that a corresponding one of the end windings is disposed within one of the cavities, and such that each of the channels is in direct fluid communication with a corresponding one of the cooling chambers of the first cover and with a corresponding one of the cooling chambers of the second cover.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev HANUMALAGUTTI, Michael W. DEGNER, Franco LEONARDI, Edward Chan-Jiun JIH
  • Publication number: 20170271957
    Abstract: A vehicle electric machine includes a rotor, and a stator having a core with an end face and end windings adjacent to the end face. An annular cooling trough has an outer sidewall and a bottom. The trough is connected to the end face such that the bottom engages the core, and the sidewall, bottom and end face cooperate to define an open channel around the end windings configured to receive fluid therein.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev HANUMALAGUTTI, Michael W. DEGNER, Franco LEONARDI
  • Publication number: 20170271951
    Abstract: An electric machine for an electrified vehicle is provided. The electric machine may include a stator, a ring plate, an encasement, and a fastener. The stator defines a cavity, a stator recess about a portion of the cavity, and a stator aperture. The stator may include windings disposed within and partially protruding out of the cavity. The ring plate may be sized for disposal within the stator recess, and may define a tab and a plate aperture for alignment with the stator aperture. The encasement may define a key sized for engagement with the tab to secure the encasement to the ring plate, and a closed coolant channel. The fastener may be sized for insertion within the apertures to secure the plate to the stator. The stator, ring plate, and encasement may be arranged with one another such that the partially protruding windings are disposed within the closed coolant channel.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Franco Leonardi
  • Publication number: 20170271954
    Abstract: An electric machine includes a stator. The stator has a plurality of slots defined between a plurality of laminated protrusions. A plurality of wire windings is disposed in the slots. The wire windings form end windings at respective ends of the stator. A cover is disposed about the end windings. A coolant chamber is defined between an inner surface of the cover and the stator. The cover includes a plurality of flow disruption members extending from the inner surface into the coolant chamber.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner
  • Publication number: 20170271940
    Abstract: A cover for a housing of an electric machine is provided. The cover may include an inner sidewall and an outer sidewall. The outer sidewall may be spaced apart from the inner sidewall to define a coolant channel therebetween. The inner sidewall and outer sidewall may be defined by an interior surface of the cover such that the coolant channel receives end windings of a stator of the electric machine when the cover is secured to the housing. The interior surface of the cover may define features between the sidewalls to promote turbulence of coolant flowing through the coolant channel. The interior surface of the cover may define a meandering trough between the sidewalls to form a predetermined coolant path relative to a location of the end windings when the cover is secured to the housing.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 21, 2017
    Inventors: Prasad Dev Hanumalagutti, Michael W. Degner, Edward Chan-Jiun Jih, Guangyin Lei, Franco Leonardi