Liquid Coolant Patents (Class 310/54)
  • Patent number: 11368072
    Abstract: A rotary driving apparatus includes a motor including a rotor and a stator, a first temperature sensor that detects a stator's temperature and issues a first detection signal including stator's temperature information, a housing accommodating the motor, a cooling medium supply provided in the housing to supply a cooling medium to the motor, an open-close valve provided at a housing's lower portion to open to store the cooling medium inside the housing and close to discharge the cooling medium from the housing, and a controller that predicts a stator's temperature change on the basis of the first detection signal to close, if the stator's temperature is predicted to exceed a motor's operation guarantee temperature, while the motor is driven at an operating point within a motor's time rating region, the open-close valve before starting motor's output restriction, to thereby increase a stored cooling medium amount inside the housing.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: June 21, 2022
    Assignee: SUBARU CORPORATION
    Inventor: Shutaro Yamada
  • Patent number: 11356001
    Abstract: A cooling device for a stator of an electrical machine, for fitting together with a hollow cylindrical laminated core of the stator, includes multiple cooling channels for conducting cooling fluid along the laminated core, and a fluid ring for provision on an end face of the laminated core. The fluid ring has two fluid ring channels for distributing the cooling fluid to the cooling channels and for receiving the cooling fluid from the cooling channels, and at least two cooling fluid connections for introducing and removing the cooling fluid into and from the fluid ring channels. The fluid ring channels have circumferential-angle-dependent flow cross-sections in the flow direction, in order to evenly distribute the cooling fluid to the cooling channels.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: June 7, 2022
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Andreas Huber, Benjamin Krank, Jens Richter
  • Patent number: 11339706
    Abstract: An integrated hybrid power apparatus provided in a flying body includes a generator including a stator and a rotor, at least one engine disposed adjacent to the generator and including a cylinder, and a cooler configured to cool the generator and the engine and perform water-cooling that allows a coolant to circulate in the generator and the engine.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: May 24, 2022
    Assignee: KOREA AEROSPACE RESEARCH INSTITUTE
    Inventors: Keun Bae Kim, Byeong Gyu Gang
  • Patent number: 11336151
    Abstract: An electric starter-generator is described. The generator may comprise a rotor, a housing, two bearings, a stator, and a cooling-fluid flowpath. The cooling-fluid flowpath may comprise a cooling-fluid entrance and exit, and a cooling-fluid channel in fluid communication with the entrance and exit. At least a portion of the channel may be defined by a fluid-tight coupling of the housing and a sleeve radially surrounding the outer race of either the bearings. The portion may form an annulus about the axis. The portion may comprise a radially inner surface defined by the sleeve, a radially outer surface define by said housing, and two axial surfaces. The two axial surfaces may extend a distance from the radially inner to outer surfaces that is less than a distance from one of the two axial surfaces to the other of the two axial surfaces.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: May 17, 2022
    Assignees: ROLLS-ROYCE PLC, ROLLS-ROYCE CORPORATION
    Inventors: David Scothern, Mark Boden, Don Klemen, William Williamson, Brian Maners
  • Patent number: 11325458
    Abstract: A transmission (G) for a motor vehicle includes a housing (GG), a gear set (RS) arranged within the housing (GG), an electric machine (EM), and a power electronics module (LE). The power electronics module (LE) includes a carrier element (S), a DC voltage terminal (DC), an inverter (INV), and an AC voltage terminal (AC). The housing (GG) includes, on an outer wall (GGA), a region (GGE) for accommodating the power electronics module (LE), which is closable with the carrier element (S) of the power electronics module (LE). The region (GGE) of the housing (GG) and an inner side (SI) of the carrier element (S) form a dry space (TR) for accommodating the inverter (INV), which is attached to the carrier element (S). The region (GGE) of the housing (GG) at least partially separates the gear set (RS) from the dry space (TR).
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: May 10, 2022
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Linus Eschenbeck, Hermann Thurn, Matthias Held
  • Patent number: 11309758
    Abstract: A rotating electric machine includes a rotor and a stator. The rotor includes: a rotor core having a refrigerant flow path; and an end surface plate arranged at least on one side of the rotor core. The refrigerant flow path includes: a first refrigerant flow path; and a second refrigerant flow path which is disposed further on a radial inner side than the first refrigerant flow pat. The stator includes: a stator core; and a coil end portion protruding from at least one side of the stator core. The end surface plate includes: a root side refrigerant supply portion which communicates with the first refrigerant flow path and supplies the refrigerant to a root region of the coil end portion; and a distal side refrigerant supply portion which communicates with the second refrigerant flow path and supplies the refrigerant to a distal region of the coil end portion.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: April 19, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Wakui, Yasuhiro Fujita
  • Patent number: 11309771
    Abstract: A cooling jacket has cooling units coupled in a row. The cooling unit comprises a plate-shaped cooling unit body with flow channel, a socket joint extending from one end of the flow channel, and a spigot joint extending from one end of the flow channel. The spigot joint is fitted to the socket joint to connect the cooling units to each other. The socket joint has a spherical-shaped inner surface, and the spigot joint has a spherical-shaped outer surface that matches the inner surface of the socket joint to detachably connect the cooling units to each other and be rotatable about an axis orthogonal to a coupling direction of the cooling units. The socket joint and the spigot joint are provided with through-holes that penetrate through the socket joint and the spigot joint, respectively, to communicate with the flow channels of the cooling units.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: April 19, 2022
    Assignee: FANUC CORPORATION
    Inventor: Suguru Takamizawa
  • Patent number: 11300127
    Abstract: An electric oil pump includes a motor part having a shaft; a pump part that is driven by the motor part via the shaft and discharges oil; and a control part configured to control an operation of the motor part. The motor part includes a rotor, a stator, and a motor housing in which the rotor and the stator are accommodated. The pump part includes a pump rotor attached to the shaft and a pump housing having a housing part in which the pump rotor is accommodated. The control part includes an electronic component and a board having a surface on which the electronic component is mounted. The board is disposed outside the stator in a radial direction and within a range of the motor part in the axial direction, and the surface of the board is disposed to face the stator and extends in the axial direction.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: April 12, 2022
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Shigehiro Kataoka, Yoshiyuki Kobayashi
  • Patent number: 11293390
    Abstract: A fuel pump for a liquid fuel injection system of a motor vehicle is provided. The fuel pump for a fuel injection system includes a low-pressure pump that provides liquid fuel from a fuel tank of the motor vehicle at a low pressure. A high-pressure pump in fluid communication with the low-pressure pump and compresses the liquid fuel from the low pressure to a high pressure for injecting the liquid fuel into an internal combustion engine of the motor vehicle. A pump drive drives the low-pressure pump and the high-pressure pump synchronously with a pump frequency independently from an engine speed of the internal combustion engine of the motor vehicle.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: April 5, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Stephan Revidat, Johannes Ullrich
  • Patent number: 11283332
    Abstract: In a rotating electric machine, a rotor core has a rotor core cooling hole under a state of being coupled to a first gap at a position on a radially inner side with respect to a center portion of a first inner wall surface in a length direction. The rotor core has a radially-outer-side refrigerant flow path formed under a state of being coupled to a radially-outer-side end portion of the first gap. A first end plate has a communication path formed so as to extend from an inner end surface of the first end plate to the rotor core cooling hole. A second end plate has a discharge path formed so as to allow the radially-outer-side refrigerant flow path to communicate with an outside.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: March 22, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Junji Kitao, Tomohira Takahashi, Yusuke Kimoto, Yoshihiro Miyama, Masatsugu Nakano, Yuya Tanaka
  • Patent number: 11283316
    Abstract: A rotor includes a rotor core, a shaft rotated integrally with the rotor core and having an axial center cooling path through which a coolant is able to flow, a plate member having a first flow path which flows the coolant flowing through the axial center cooling path to an outer circumferential section of the rotor core, a permanent magnet disposed on the outer circumferential section of the rotor core, a filament winding layer wound on an outer circumferential section of the permanent magnet, and a cylindrical body disposed on an outer circumferential section of the filament winding layer.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: March 22, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Shuhei Tanaka
  • Patent number: 11271444
    Abstract: The motor rotor assembly structure includes a rotating shaft, a plurality of rotor cores formed by a plurality of rotor punches neatly laminated, and rotor pressure plates installed at front and rear ends of the rotor core. The rotor core is provided with a shaft hole for mounting the rotating shaft in the middle in an axial direction. Two rotor pressure plates press the plurality of rotor punches. The rotating shaft is a hollow shaft. The plurality of rotor punches has the same structure. Each of the rotor punches is provided with a plurality of sets of positioning holes. The plurality of rotor punches is positioned and fixed to the rotating shaft through the plurality of sets of positioning holes to realize oblique poles between rotor segments. The motor rotor assembly structure is made by laminating one type of rotor punches.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: March 8, 2022
    Assignee: Hefei Jee Power Systems, Co., Ltd.
    Inventors: Lei Liu, Jialun Fan, Chunzhe Sun, Yuehua Li, Jingwei Cui
  • Patent number: 11264852
    Abstract: A cooling structure is provided that cools a rotor in a motor. The motor includes a shaft that is rotatably supported on a case and a rotor having a rotor core to which a plurality of magnets are provided on an outer periphery of the shaft and which is disposed to face a stator. Flow passages are formed on the shaft and the rotor and cooling oil passes through a core flow passage inside the rotor core from an introduction flow passage on a first side in an axial direction of the shaft and flows to the introduction flow passage on a second side in the axial direction of the shaft. An inlet communicating with the introduction flow passage and an outlet communicating with the introduction flow passage are formed in the case.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: March 1, 2022
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventor: Takenori Hashimoto
  • Patent number: 11261921
    Abstract: A hybrid module housing includes a bulkhead. The bulkhead has a first radial channel for providing a clutch apply pressure, a second radial channel for providing a clutch cooling flow, and a third radial channel for providing a motor cooling flow. In an example embodiment, the third radial channel is arranged to be on a bottom half of the hybrid module housing when the hybrid module housing is installed in a vehicle. In an example embodiment, the first radial channel and the second radial channel are open at a radially outer surface of the bulkhead, and the third radial channel is sealed at the radially outer surface of the bulkhead. In an example embodiment, the third radial channel includes an axial passage open at a radial wall of the bulkhead.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: March 1, 2022
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Micah Steiner, Matthew Payne, Patrick Lindemann
  • Patent number: 11251681
    Abstract: A method for securing metallic first and second parts together includes positioning filler metal along an interface between the first and second parts. The first and second parts are inserted into a fixture such that at least one of the first and second parts engages the fixture. The fixture is heated with at least one electrical heating element to heat the filler metal by thermal conduction above a melting point of the filler metal and form metallurgical bonds between the filler metal and the first and second parts. The melted filler metal is cooled to join the first and second parts together.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: February 15, 2022
    Assignee: KOCH ENGINEERED SOLUTIONS, LLC
    Inventors: Russel H. Marvin, Dylan Broomfield, David Leach
  • Patent number: 11251682
    Abstract: An electric motor includes: a case; a stator including a stator core disposed inside the case and a stator coil wound around the stator core; a rotor including a rotating shaft and being configured to rotate with respect to the stator; and an oil spraying part that is configured to store oil in a lower part of the case, that includes an oil passage configured to guide the oil to an upper area of the case and an oil pump for pumping the oil, and that is configured to spray the oil to an inner heating part of the case. Accordingly, the oil can suppress occurrence of short-circuiting of an electric circuit and rapidly cool a heating part.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: February 15, 2022
    Assignee: LG Magna e-Powertrain Co., Ltd.
    Inventors: Sungsoo Lee, Yongsoo Kang, Junghwan Kim, Shuang Liu, Seunghyun Jeong
  • Patent number: 11251669
    Abstract: A generator arranged to be driven by an aircraft engine. The generator including a rotor. The rotor includes an inlet for receiving a fluid, a plurality of outlets configured to release the fluid from a radially outer region of the rotor, and a fluid distribution arrangement arranged to direct fluid from the inlet to one or more of the plurality of outlets. The fluid distribution arrangement is configured to selectively distribute fluid to one or more of the plurality of outlets in dependence on an operational parameter of the rotor.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: February 15, 2022
    Assignee: SAFRAN ELECTRICAL & POWER
    Inventor: Paul David Flower
  • Patent number: 11230941
    Abstract: An aircraft gas turbine engine (10) comprises a main engine spool (22) and a bearing arrangement (36) configured to rotatably support the main engine spool (22). The bearing arrangement (36) includes a damper (41) comprising a static element (42) and a moveable element (39). The gas turbine engine further comprises an electric machine (30) comprising a rotor (34) and a stator (32). The rotor (34) is mounted to the main engine spool (22), and the stator (32) is mounted to the moveable element (39) of the damper to be moveable with the moveable element (39).
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 25, 2022
    Assignee: ROLLS-ROYCE PLC
    Inventor: Jonathan P Bradley
  • Patent number: 11223257
    Abstract: An electric rotary machine includes a rotor and a stator. The rotor includes a rotor shaft having a refrigerant flow path therein, a rotor core, a plurality of magnet pole portions, a first end plate and a second end plate. The stator includes a first coil end located radially outside the first end plate, and a second coil end located radially outside of the second end plate. The first end plate includes a first refrigerant discharge hole, a first groove portion communicating with the refrigerant flow path and communicating with the first refrigerant discharge hole, and a second groove portion communicating with the refrigerant flow path and the core through hole. The second end plate includes a second refrigerant discharge hole communicating with the refrigerant flow path via the core through hole and the second groove portion, without directly communicating with the refrigerant flow path.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 11, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Noriaki Fujita, Norifumi Yasuda
  • Patent number: 11223247
    Abstract: A stator for a rotary electric machine includes a stator core and a stator coil. The stator core includes an annular back yoke, a plurality of teeth, and a plurality of slots. The stator coil, being housed in the slots and wound around the teeth of the stator core, includes coil ends protruding from the respective end faces of the stator core in the axial direction. The rotary electric machine stator further includes an insulating sleeve which is wound around root portion of the coil end on the end face of the stator core in the axial direction and disposed along the circumferential direction of the back yoke.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: January 11, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kentaro Haruno, Makoto Yoshikawa
  • Patent number: 11221054
    Abstract: An e-charger includes a shaft supported for rotation about an axis. The e-charger also includes a compressor wheel that is attached to the shaft. The e-charger further includes an electric motor configured to drive the shaft and the compressor wheel in rotation. Also, the e-charger includes a housing that houses the electric motor and at least part of the shaft. Moreover, the e-charger includes a dampening system incorporated in the housing and configured to dampen loads transferring through the housing. The dampening system includes at least one solid-state dampener that is resiliently flexible, and the dampening system includes at least one fluid viscous dampener.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: January 11, 2022
    Assignee: GARRETT TRANSPORTATION I INC
    Inventors: Milan Nejedly, Vit Houst, Daniel Turecek, Pavel Krejci, Zbynek Oslejsek
  • Patent number: 11218057
    Abstract: An electric machine is described herein. The electric machine includes a casing, a stator, a rotor generally coaxial with the stator, an enclosed cooling assembly circulating a first cooling fluid within the casing, and an open cooling assembly through which a second cooling assembly can flow; the open cooling assembly cooling both the stator and the first cooling fluid.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: January 4, 2022
    Assignee: DANA TM4 INC.
    Inventors: Eric Latulipe, Yannick Philibert, Jean-Philippe Dextraze, Martin Houle, Jean-Philippe Desbiens, Mathieu Lepage, Francois Dube
  • Patent number: 11208859
    Abstract: A pit pump of a drilling fluid recycling system where the pit pump is driven by a liquid cooled electric drive motor that is cooled by a cooling liquid. The pit pump can stay submerged in the used drilling fluid within the pit indefinitely since the pit pump does not require cleaning to remove caked on drilling fluid to prevent overheating of the electric drive motor since the cooling liquid cools the electric drive motor. This reduces or eliminates the need to remove the pit pump from the pit for servicing. The electric drive motor can also be reversible to reverse the rotation direction of the pit pump. Further, the pit pump can include its own controller, located within the pit or outside the pit, connected to various sensors that can be used for health monitoring of the pit pump and controlling operation of the pit pump.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: December 28, 2021
    Assignee: LAVALLEY INDUSTRIES, LLC
    Inventors: Jason LaValley, Douglas Coutlee, Daniel Larson
  • Patent number: 11209221
    Abstract: A modified shaped heat exchanger hot air inlet and hot air outlet comprising a first heat exchanger manifold surrounding said hot air inlet and a second heat exchanger manifold surrounding said hot air outlet; an array of shaped inlets and shaped outlets, each of said shaped inlets and shaped outlets being configured to align vertices with thermal load directions responsive to a thermal expansion mismatch between the hot air inlet and hot air outlet and respective first heat exchanger manifold and second heat exchanger manifold.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: December 28, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Brandon W. Spangler, David R. Pack, William P. Stillman
  • Patent number: 11205932
    Abstract: An electric rotary machine includes a rotor and a stator disposed radially outward of the rotor. The rotor includes a rotor shaft, a rotor core, a plurality of magnetic pole portions, a first end plate, and a second end plate. The first end plate includes a refrigerant discharge hole, a first groove portion communicating with a refrigerant flow path and communicating with a first refrigerant flow path hole, and a second groove portion communicating with the first groove portion and communicating with a refrigerant discharge hole of the first end plate. The second end plate includes a refrigerant discharge hole, and a third groove portion communicating with the first refrigerant flow path hole and communicating with a refrigerant discharge hole of the second end plate.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: December 21, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tatsuya Ohzu, Tadashi Yamaguchi
  • Patent number: 11190064
    Abstract: An electrical machine for a vehicle includes a rotor, which can be rotated about an axis of rotation, by which an axial direction of the electrical machine is defined, a stator with stator windings; and a cooling channel, or a plurality of cooling channels, through which a coolant flows. The stator has stator teeth, which extend along the axial direction and are spaced apart from each other along a circumferential direction and which bear the stator windings. At least one stator winding is embedded in an electrically insulating plastic for thermal coupling, the electrically insulating plastic is arranged, together with the at least one stator winding, in an intermediate space, which is formed between two stator teeth adjacent in the circumferential direction, and the electrically insulating plastic is formed by a first plastic mass of a first plastic material and a second plastic mass of a second plastic material.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: November 30, 2021
    Assignee: MAHLE International GmbH
    Inventors: Mirko Hoerz, Hans-Ulrich Steurer, Josef Sonntag, Stojan Markic, Andrej Licen, Aleks Medvescek, Peter Sever, Philip Grabherr
  • Patent number: 11190063
    Abstract: An electrical machine may include a rotor rotatable about an axis of rotation which defines an axial direction, a stator including a plurality of stator windings, a coolant collector chamber, and a coolant distributor chamber fluidically communicating with the coolant collector chamber via at least one cooling duct. At least one stator winding may be embedded into a plastic compound composed of an electrically insulating plastic. The stator may further include a stator body having a space. The at least one cooling duct may be arranged in the stator body and may be at least partially defined by at least one aperture disposed in the stator body through which the coolant is flowable. The at least one aperture may open towards the space and may be closed in a fluid-tight manner via the plastic compound.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: November 30, 2021
    Inventors: Mirko Hoerz, Hans-Ulrich Steurer, Josef Sonntag, Stojan Markic, Andrej Licen, Aleks Medvescek, Peter Sever, Philip Grabherr
  • Patent number: 11171552
    Abstract: A short-circuit ring for a squirrel cage of a dynamoelectric rotary machine includes at least one indentation and is connectable by means of the indentation to at least one cage bar which projects from a rotor lamination of the dynamoelectric rotary machine.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: November 9, 2021
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jörg Müller, Alexandra Schneider
  • Patent number: 11165306
    Abstract: A rotating electrical machine includes: an oil reception part that has an opening opposed to an injection hole designed to inject ATF into the atmospheric pressure inside a housing; and an oil reservoir that communicates with the oil reception part via a communicating hole provided in a wall part and communicates with a rotor cooling oil channel of a shaft via a cooling oil lead-in hole provided in the wall part. Since ATF having flowed out of the oil reception part flows along an inner face of the wall part of a second housing by gravity and reaches a bearing, one ATF supply route can be used both for cooling a rotor and lubricating a bearing, whereby the ATF supply route can be simplified.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: November 2, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Manabu Yoshinori, Masaya Inoue, Yoshiaki Kitta
  • Patent number: 11146124
    Abstract: A stator of a rotating electric machine Includes a stator core that has a plurality of slots and in which electromagnetic steel sheets are stacked in the axial direction, a stator coil inserted into the slots, a finger plate provided on an axially outer end surface of the stator core, and a clamper provided on an axially outer end surface of the finger plate and for clamping the stator core via the finger plate. Furthermore, a rectangular parallelepiped-shaped notch is provided on a part of the finger plate from any position at an anti-stator core side located lateral to an upper stator coil in a circumferential direction to a radially inner end portion.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: October 12, 2021
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takahiro Joyo, Haruyuki Kometani, Nobuyuki Sora
  • Patent number: 11142064
    Abstract: In an electric vehicle including a motor shaft connected to a drive motor, a counter shaft coupled with the motor shaft, a drive shaft coupled with the counter shaft, a drive wheel coupled with the drive shaft, a plurality of bearings configured to support the counter shaft, and a plurality of gears configured to rotate integrally with the counter shaft, a torque sensor is disposed in a region in which a slope of a bending moment occurring on the counter shaft is minimum at a time that the drive motor is driven.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: October 12, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Tatsuya Ohzu, Yutaka Arimura, Daisuke Hoshino, Shingo Soma, Yosuke Tanaka
  • Patent number: 11139720
    Abstract: A drive apparatus includes a motor that includes a motor shaft disposed along a first central axis that extends in one direction a housing that includes a first housing portion housing the motor and that is capable of storing oil, a liquid cooling portion disposed in thermal contact with an inverter electrically coupled to the motor, the liquid cooling portion including a refrigerant liquid flowing therein, and a pipe portion connected to the liquid cooling portion, the refrigerant liquid inside the liquid cooling portion flowing in the pipe portion. The pipe portion passes inside the housing.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: October 5, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Yasuo Yamaguchi, Takayuki Migita, Yuki Ishikawa
  • Patent number: 11139719
    Abstract: A system includes a shaft body defining a longitudinal axis. A first internal fluid channel extends axially within the shaft body and includes an inlet opening through the shaft body for fluid communication of external fluid into the first internal fluid channel and an outlet opening through the shaft body for fluid communication of fluid from the first internal fluid channel to an area external of the shaft body. A second internal fluid channel extends axially within the shaft body and includes an inlet opening through the shaft body for fluid communication of external fluid into the second internal fluid channel and an outlet opening through the shaft body for fluid communication of fluid from the second internal fluid channel to an area external of the shaft body. The first and second internal fluid channels are in fluid isolation from one another within the shaft body.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: October 5, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Brian C. Konopa
  • Patent number: 11125108
    Abstract: A turbocharger includes a bearing housing containing a motor within an interior portion of the bearing housing. A liquid-cooled power module is secured to an exterior portion of a bearing housing. The power module contains electrical components that power and control speed of the motor, and has an enclosure that includes sealed first and second volumes separated by a common wall. The first volume is a liquid-cooled compartment for removing heat generated from the electrical components, and the second volume is a liquid-free compartment containing the electrical power components. The electrical power components are fixed to the common wall, which is formed of a heat conductive material, and which may include fins extending into the first volume to optimize heat transfer from the common wall into the liquid-cooled compartment. Finally, the liquid-cooled power module communicates with the motor directly through the bearing housing.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: September 21, 2021
    Assignee: BorgWarner Inc.
    Inventor: Tyler R. Garrard
  • Patent number: 11114917
    Abstract: An electric motor rotor for a hybrid module includes a rotor carrier, a piston carrier, and a tapered snap ring. The rotor carrier includes a first inner circumferential surface with an inner spline for receiving a first plurality of clutch plates, a second inner circumferential surface, radially outside of the first inner circumferential surface, a radial wall connecting the first inner circumferential surface to the second inner circumferential surface, and a groove with a conical wall. The piston carrier includes a radial outer ring installed between the groove and the radial wall. The tapered snap is ring installed in the groove and urges the piston carrier into contact with the radial wall.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: September 7, 2021
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventors: Mohammad Moasher, Victor Norwich, Kyle Nelson, Matthew Payne
  • Patent number: 11108303
    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: Grant
    Filed: August 22, 2016
    Date of Patent: August 31, 2021
    Assignee: Ford Global Technologies, LLC
    Inventors: Franco Leonardi, Prasad Dev Hanumalagutti, Michael W. Degner
  • Patent number: 11108286
    Abstract: An electrical machine has passages in the coil ends of a stator. The passages have an inlet port and an exit port disposed at different locations. The passages remove heat from the electrical machine during operation. The passages formed in the coil ends can receive a cooling fluid discharged from cooling passages formed in a stator core. Tooling can be used to form the passages. In some embodiments passages are also formed in the rotor. Other embodiments include apparatuses, systems, devices, hardware, methods, and combinations for electrical machines and the cooling of electrical machine rotors and/or stators.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: August 31, 2021
    Assignee: Trane International Inc.
    Inventor: Fredrik Boxberg
  • Patent number: 11095183
    Abstract: A motor, an inverter substrate electrically connected to the motor, a housing accommodating the motor and the inverter substrate, and a pump section driven by the motor are included. The inverter substrate is disposed on one side of the motor. The pump section is disposed on the other side of the motor. The housing has a motor housing section accommodating the motor, an inverter housing section accommodating the inverter substrate, and a breather section establishing communication between inside and outside of the housing. The motor housing section has an accommodation tubular section accommodating the motor and a brim section spreading outward in a radial direction from an end of the accommodation tubular section. The inverter housing section is disposed on one side of the brim section and overlaps the brim section when seen in the axial direction. The breather section is disposed at the brim section.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: August 17, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Yoshiyuki Kobayashi, Tatsuo Abe, Hitoshi Sakamoto
  • Patent number: 11095187
    Abstract: A rotary electric machine includes a stator, a rotor, a case having two or more seat portions on which portions of a stator core are seated, and a reinforcement plate disposed on the top surface of the stator core. The stator core includes two or more attachment portions that are seated and fixed on the seat portions. The reinforcement plate is less likely to flex in the axial direction than the steel sheets, and is fixed on the top surface of the stator core so as to extend over at least two of the attachment portions.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: August 17, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshitada Yamagishi, Takayori Sakakibara
  • Patent number: 11095192
    Abstract: This disclosure pertains to a system for cooling an electric motor including a rotor which is connected to an output shaft, a stator disposed about the rotor, a casing in which the stator and rotor are disposed, and a cooling assembly. The cooling assembly includes an inlet configured to deliver coolant into the casing and directly onto the stator to cool the stator and an outlet configured to remove the coolant from the casing. The stator is a major source of heat within the electric motor and applying coolant directly to onto the stator is an effective method of cooling the motor.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: August 17, 2021
    Inventor: Arthur Leon Kowitz
  • Patent number: 11095191
    Abstract: A motor includes a stator, a rotor shaft assembly carried within and supported to rotate by the stator and a closed-loop cooling system. The rotor shaft assembly includes a rotor separated from the stator by a radial gap. The rotor shaft assembly includes an elongate, hollow shaft about which the rotor is configured to rotate. The shaft includes an opening to flow fluid through a hollow portion of the shaft. The closed-loop cooling system includes multiple helical members positioned within the stator. The multiple helical members are configured to flow cooling liquid in a closed flow pathway defined by the radial gap, the opening and the hollow portion of the shaft during rotor rotation within the stator.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: August 17, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Christopher Wrighton, Jinjiang Xiao
  • Patent number: 11085006
    Abstract: The present disclosure relates to methods of lubricating an electric or a hybrid-electric transmission using a lubricant including a solvent system with a blend of one or more base oils with a branched diester and one or more poly(meth)acrylate copolymers, transmissions therefor, and lubricating compositions suitable for such applications that exhibit good lubricant properties, good electrical properties, and good cooling efficiency at the same time.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: August 10, 2021
    Assignee: Afton Chemical Corporation
    Inventor: Yungwan Kwak
  • Patent number: 11070110
    Abstract: A cooling system includes a rotary electric machine, a pump that pumps coolant, a first coolant flow path that guides coolant to the rotary electric machine, a second coolant flow path branching off from the first coolant flow path, a pressure regulation valve provided in the second coolant flow path, a first orifice provided at downstream than the pressure regulation valve in the second coolant flow path in coolant flow direction, a third coolant flow path branching off from between the pressure regulation valve and the first orifice in the second coolant flow path and joining to a downstream than the branching position of the second coolant flow path in the first coolant flow path in coolant flow direction, and a switching valve provided in the third coolant flow path and that allows coolant flow to the first coolant flow path when experiencing a pressure of a threshold or more.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: July 20, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yoshinori Tanaka
  • Patent number: 11056952
    Abstract: An electric machine includes a stator core having opposing first and second end faces, an outer surface between the end faces, and a plurality of fluid passageways defined within the stator core. Each fluid passageway includes an entrance hole defined in the outer surface and an inboard passage extending along a length of the core and in fluid communication with the entrance hole. Each fluid passageway further includes an outboard passage extending along a length of the core and having a first exit hole defined in the first end face and an interconnecting passage connecting the inboard passage in fluid communication with the outboard passage.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: July 6, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventors: Matthew Payne, Markus Steinberger
  • Patent number: 11043866
    Abstract: The invention relates to an electric machine comprising a stator and a rotor. The rotor is rotatably mounted within the stator and has a rotor shaft which is in the form of a hollow shaft and by means of which a cavity is formed that is provided for receiving a coolant. The rotor shaft has at least two shoulders, and at least one end section, wherein at least three rotor shaft sections with different diameters are formed. A flow element is arranged in the cavity of the rotor shaft in the region of the second rotor shaft section, and at least one radial outlet opening is formed in the casing of the rotor shaft in the region of the second rotor shaft section, said outlet opening fluidically connecting the cavity of the rotor shaft to an outer region of the rotor shaft.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: June 22, 2021
    Assignee: MAGNA POWERTRAIN GMBH & CO KG
    Inventor: Gerhard Seidl
  • Patent number: 11043878
    Abstract: A stator assembly comprising stator windings and power electronics coupled to the windings for powering the windings, wherein the stator assembly is arranged so that when it is disposed in an enclosure, a flow of coolant is channelled over both the windings and elements of the power electronics.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: June 22, 2021
    Assignee: Sevcon Limited
    Inventor: Peter Barrass
  • Patent number: 11041439
    Abstract: A gas turbine engine system includes a gas turbine engine and a turbo-generator. The gas turbine engine includes a heat exchange system configured to transfer thermal energy from an air flow (i.e., inlet air flow or exhaust gas flow) to a fuel to produce a gaseous fuel. The turbo-generator includes a fuel turbine fluidly coupled to the heat exchange system and a combustor of the gas turbine engine, a fuel pump configured to be driven by the fuel turbine and fluidly coupled to the heat exchange system, and a motor/generator configured to be driven by the fuel turbine. The fuel turbine is configured to extract energy from expansion of the gaseous fuel to produce a gaseous fuel for combustion in the combustor. The motor/generator includes a cooling jacket, which is fluidly coupled to the fuel pump.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: June 22, 2021
    Assignee: Raytheon Technologies Corporation
    Inventor: Gary D. Roberge
  • Patent number: 11038404
    Abstract: A rotary machine, in particular an electric machine, has a shaft, which extends in an axial direction and which has a cavity, and a heat pipe, in which a first thermal medium is arranged. The rotary machine is characterized in that the heat pipe is designed as an annular chamber, which surrounds the cavity. Improved cooling for the rotary machine is ensured by this arrangement.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: June 15, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Andreas Huber, Thinh Nguyen-Xuan, Nicolas Brossardt
  • Patent number: 11038403
    Abstract: A rotary electric machine includes a stator with a stator winding, a rotor with a field winding supported for rotation about a rotation axis relative to the stator, and an excitation winding. The excitation winding is fixed relative to the rotor and is electrically connected to the field winding. The rotor defines a coolant channel having an inlet and an outlet. Liquid coolant enters the inlet and flows outwardly through a portion of the excitation winding to conduct heat away from the excitation winding. Generators, aircraft electrical systems, and methods of cooling rotary electric machines are also described.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: June 15, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Glenn C. Lemmers, Jr., Brady A. Manogue
  • Patent number: 11025136
    Abstract: Dynamo-electric machine (10) has cylindrical frame (11), cylindrical stator (12) fixed to an inside of the frame (11), cylindrical rotor (13) provided inside the stator (12) such that gap (G) is formed between the rotor (13) and the stator (12), rotation shaft (14) fixed to the rotor (13) so as to penetrate an inside of the rotor (13), and bracket (15) fixed to the frame (11) and rotatably supporting the rotation shaft (14). The stator (12) has duct (12a) radially formed at a middle portion in an axial direction of the stator (12) and communicating with the gap (G). The frame (11) has first supply opening (16) through which cooling air flow (1) is supplied in the frame (11) at axial direction both end sides of the frame (11), and second supply opening (17) through which cooling air flow (1) is supplied to the duct (12a) of stator (12).
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: June 1, 2021
    Assignee: MEIDENSHA CORPORATION
    Inventor: Kota Kawanishi