Liquid Coolant Patents (Class 310/54)
  • 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: 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: 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: 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: 11025108
    Abstract: A stator includes a core and a coolant jacket. The core has an outer surface extending about a rotation axis and defining one or more surface discontinuity within the outer surface. The coolant jacket is deposited on the outer surface of the core and has two or more layers conformally disposed on the outer surface of the core, the coolant jacket inhabiting the one or more surface discontinuity. Electrical machines, motor-type electrical machines, and methods of making stators are also described.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: June 1, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Thomas M. Yun, Jagadeesh Kumar Tangudu
  • Patent number: 11025114
    Abstract: A rotor for an electric machine includes a core having circumferentially-spaced, axially-extending posts, and defining an axial passage, a winding carried by each of the posts and comprising an electrically-conductive wire repeatedly wound around the post such that a portion of the winding extends axially beyond the post to define an overhang with upper and lower surfaces connected by an end, and a hollow shaft defining a rotor inner surface and a rotor outer surface.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: June 1, 2021
    Assignee: GE Aviation Systems LLC
    Inventors: Balamurugan Sridharan, Rajendra Vishwanath Pawar, Mamatha Ramakrishnaiah, Xiaochuan Jia, Samir Dey, Hao Huang, Dhiraj Khushal Thakare, Pankaj Kumar Morya
  • Patent number: 11025116
    Abstract: A fluid-cooled axial flux motor having a stator, a rotor disposed adjacent to the stator, and a rotor shaft rotationally fixed onto the rotor. The rotor shaft includes axial coolant passageway having an inlet and opposite outlet. The rotor includes coolant passageways extending radially from rotor shaft. The rotor coolant passageways include an inlet in fluid communication with the outlet of the axial coolant passageway and an outlet. The fluid-cooled axial flux motor further includes a coolant distribution header having an inlet in fluid communication with the outlet of the rotor coolant passageway, a coolant collection header having an inlet in fluid communication with the outlet of the coolant distribution header, and a collection header outlet. The outlet of the coolant distribution header is disposed above the stator and the inlet of the coolant collection header is disposed below the stator with respect to the direction of gravity.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: June 1, 2021
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jian Yao, Yusheng Zou, Chengwu Duan, Zhen Gao, Lei Hao, Alireza Fatemi
  • 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
  • Patent number: 11025135
    Abstract: An electrical machine includes a stator including a plurality of stator windings; and a rotor in magnetic cooperation with the stator. The rotor includes a plurality of cooling passages extending therethrough, each cooling passage including an inlet for receiving oil and an outlet for discharging the oil. The electrical machine includes a rotating oil distribution member coupled to the rotor, the oil distribution member including a radially inward portion and a radially outward portion, the radially outward portion being disposed adjacent to the inlets of the plurality of cooling passages. A stationary oil delivery nozzle is constructed to discharge oil toward the radially inward portion of the oil distribution member. The oil distribution member is constructed to receive the oil discharged by the oil delivery nozzle, and to direct the oil to the inlets of the cooling passages to cool the rotor.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: June 1, 2021
    Assignee: ABB Schweiz AG
    Inventors: Ghanshyam Shrestha, Colin E. Tschida
  • Patent number: 11015661
    Abstract: An example electromagnetic clutch assembly includes a rotatable portion and a stationary portion. The rotatable portion includes a field winding and a clutch body, and the stationary portion includes an exciter winding that is inductively coupled to the rotatable portion and is operable to energize the field winding. The field winding is operable, when energized, to provide a magnetic field that causes engagement or disengagement between the clutch body and an armature body. A method of operating an electromagnetic clutch assembly is also disclosed.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: May 25, 2021
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Naison E. Mastrocola
  • Patent number: 11018555
    Abstract: An induction motor includes a motor shaft, a rotor, and a rotor conductor bar. In some embodiments described herein, the rotor has a first axial side and a second axial side, and is non-rotatably secured to the motor shaft. The rotor includes a rotor core having an interior surface defining a slot extending from the first axial side to the second axial side. The rotor conductor bar is disposed in the slot. The rotor conductor bar and the slot cooperate to define a channel configured to transfer a fluid through the rotor core from the first axial side to the second axial side while directly contacting the rotor conductor bar.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: May 25, 2021
    Assignee: SCHAEFFLER TECHNOLOGIES AG & CO. KG
    Inventor: Khaja Sharfuddin Mohammed
  • Patent number: 11005340
    Abstract: Provided is a method for cooling an electric generator including the steps of: monitoring the temperature of the end winding and of the magnet through said first and second temperature sensors, if the temperatures of the end winding and/or of the magnet rises and reaches a first upper limit, operating the plurality of cooling fans for providing a first cooling power to the electric generator, if, while the first cooling power is provided, the temperature of the magnet reaches the second maximum acceptable temperature and the temperature of the end winding is lower than the first maximum acceptable temperature, operating the plurality of cooling fans for providing a second cooling power to the electric generator, the second cooling power being lower than the first cooling power.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: May 11, 2021
    Inventor: Giovanni Airoldi
  • Patent number: 11005324
    Abstract: A rotor core has a plurality of magnetic steel sheets laminated in an axial direction. Cooling passages extending in an axial direction are formed by aligning openings of the plurality of magnetic steel sheets. The cooling passages have axial direction passages that communicate at one end. A coolant inlet is then formed in one passage, and coolant outlets are formed in the other passages.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: May 11, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Yoshitada Yamagishi
  • Patent number: 10998785
    Abstract: A rotor of an induction machine includes a ferromagnetic core structure and a cage winding. The cage winding includes rotor bars and end-rings. The rotor bars are located in slots of the ferromagnetic core structure. The end-rings connect the ends of the rotor bars to each other at the ends of the ferromagnetic core structure. The radial height of the slots of the ferromagnetic core structure is greater than the radial height of the rotor bars so that the bottom portions of the slots are free from the rotor bars. Therefore, the bottom portions of the slots constitute cooling ducts for conducting cooling fluid through the rotor. As the rotor bars constitute one wall of each cooling duct, the cooling fluid has a direct contact with the rotor bars.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 4, 2021
    Assignee: LAPPEENRANNAN-LAHDEN TEKNILLINEN YLIOPISTO LUT
    Inventors: Juha Pyrhönen, Jussi Sopanen
  • Patent number: 10978936
    Abstract: A cooling apparatus of a dynamoelectric machine including a rotor and stator, wherein the dynamoelectric machine is mounted on a vehicle in a manner that an axial line of rotation thereof is oriented in a height direction of the vehicle. The cooling apparatus includes a hydraulic power source, a discharge port provided over a circumferential direction toward a space above a winding of the stator, a case configured in which the rotor and the stator are accommodated, and a coolant oil passage formed in the case so as to lead a coolant oil supplied from the hydraulic power source to the discharge port.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 13, 2021
    Inventor: Andrii Pydin
  • Patent number: 10971961
    Abstract: A rotor sleeve provides a direct cooling method in which oil flows into the rotor sleeve via a flow passage formed through an input shaft of a transmission and is distributed to a motor coil of a driving motor to cool the motor coil. The rotor sleeve has a flow passage structure capable of maintaining a balance between the amount of oil to be distributed toward a transmission and the amount of oil to be distributed toward an engine.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: April 6, 2021
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Tae Kil Kim, Chul Min Ahn, Dae Woong Han, Jae Young Choi
  • Patent number: 10971973
    Abstract: Energy conversion apparatus comprising: an electrical machine including a rotor arranged to rotate about an axis, the rotor defining a first cavity therein; power electronic circuitry arranged at least partially around the axis and defining a second cavity therein, the power electronic circuitry being positioned adjacent to the electrical machine; a heat pipe positioned within the first cavity of the rotor and within the second cavity defined by the power electronic circuitry, the heat pipe being arranged to receive thermal energy from the rotor; and a cooling arrangement positioned at least partially within the second cavity and arranged to receive thermal energy from the power electronic circuitry and from the heat pipe.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: April 6, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: Kalyani G Menon, Richard Harwood
  • Patent number: 10960751
    Abstract: A vehicle includes an electric machine and a coolant tube. The electric machine is configured to propel the vehicle. The electric machine has a stator that includes an array of windings that are arranged in a radial configuration. The coolant tube forms a loop that is routed along an axial end of the stator and adjacent to the array. The tube defines an inlet orifice configured to receive coolant and a plurality of outlet orifices configured to direct the coolant onto the windings.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: March 30, 2021
    Assignee: Ford Global Technologies, LLC
    Inventor: Patrick Gordon Collins
  • Patent number: 10958136
    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, and 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. The housing includes a contact portion with which the liquid cooling portion is in thermal contact. At least a portion of the contact portion is disposed below an oil surface of the oil stored in the housing.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: March 23, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Yasuo Yamaguchi, Takayuki Migita, Yuki Ishikawa
  • Patent number: 10923983
    Abstract: Generator housings for generators of aircraft are provided. The generator housings include a mounting pad at a first end, the generator housing extending to a second end, and a base arranged to connect to an electronics module. The generator housing defines a generator cavity and a flow path to supply a working fluid through the generator housing, the flow path extending between an inlet formed in the mounting pad and at least one outlet formed in the mounting pad. One or more electronics flow ports enable fluid connection between the flow path within the generator housing and the electronic module when connected and one or more inductor ports enable fluid connection between the flow path within the generator housing and one or more inductors when mounted to the generator housing.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: February 16, 2021
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Craig J. Wojcik, Ted A. Martin, Mark W. Metzler, Richard L. Downing
  • Patent number: 10916992
    Abstract: A drive device includes a rotor, a stator, a housing including an accommodation portion to store oil, a pump driven through a motor shaft, and a transmission that transmits rotation of the motor shaft to a pump shaft. The pump includes an external gear fixed to the pump shaft, an internal gear surrounding the external gear and meshing with the external gear, a pump room provided in the housing and accommodating the internal gear and the external gear, a suction port through which the oil is to be sucked into the pump room, and a discharge port through which the oil is to be discharged from the pump room. The housing includes a first oil passage connected to the discharge port. The motor shaft includes a second oil passage provided in the motor shaft and connected to the first oil passage and a first through-hole connecting the second oil passage and an outer circumferential surface of the motor shaft.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: February 9, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Yasuo Yamaguchi, Yuki Ishikawa
  • Patent number: 10910916
    Abstract: An electric machine comprising a rotor, a stator, a plurality of bare conductors forming a plurality of windings in at least one of the stator and the rotor, and a fluid in direct physical contact with a plurality of outer surfaces of the plurality of bare conductors, wherein the fluid is electrically insulating and provides direct fluid cooling, to provide cooling for the plurality of bare conductors and electrical insulation between consecutive bare conductors of the plurality of bare conductors.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: February 2, 2021
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Anoop Kumar Jassal, Mohamed Osama, Francesco Papini, Narendra Digamber Joshi
  • Patent number: 10910897
    Abstract: A water-cooled generator strip having at least two conductor stacks which are arranged parallel and in each case have a plurality of conductors arranged one above the other and electrically insulated from one another by a conductor insulation, wherein the conductors are secured geometrically relative to one another by a cured resin, and wherein between the conductor stacks a gap space is provided, in which at least one cooling channel is arranged for conveying cooling water.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: February 2, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Andrey Mashkin, Mario Brockschmidt, Ralf Merte, Friedhelm Pohlmann, Christoph Lehmann, Bobby A. Warren
  • Patent number: 10892662
    Abstract: Provided is a rotary electric machine which includes a stator having an annular stator core and a winding mounted on the stator core and configured to have a coil end protruding in an axial direction of the stator core, a conductive member electrically connected to the winding of the stator and in which at least a portion thereof is disposed above the coil end, a cover member covering the conductive member from below and disposed above the coil end, and a refrigerant supply unit configured to discharge a refrigerant in a predetermined direction and supply the refrigerant to the stator. A hole penetrating in a vertical direction is provided in the cover member at a position corresponding to the coil end.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: January 12, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Yoshiaki Seki
  • Patent number: 10892665
    Abstract: A variable speed, constant frequency (VSCF) generator system is provided and includes a generator portion, a first cooling circuit and a second cooling circuit. The generator portion includes a generator, electronics configured to control operations of the generator and a housing to house the generator and the electronics. The first cooling circuit is provided such that first fluid exiting the generator passes through a first cooling element prior to returning to the generator. The second cooling circuit is provided such that second fluid exiting the electronics passes through a second cooling element prior to being pumped back toward the electronics.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: January 12, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventors: Debabrata Pal, John Huss, Mark W. Metzler
  • Patent number: 10892666
    Abstract: Disclosed is a double-casing frame of an electric machine that is cooled by a fluid circulating in the fluid circulation space (26) inside the double casing, said double-casing frame comprising: an inner casing (22) on which an end flange (30) is mounted at the rear of the machine; and an outer casing (24) that fits over the inner casing (22) and can be separated from the inner casing (22) without removing the end flange (30).
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: January 12, 2021
    Assignee: MOTEURS LEROY-SOMER
    Inventors: Thierry Pera, Philippe Ciciliani, Yohan Kerever, Hamza Lofti
  • Patent number: 10886798
    Abstract: A stator support member of a rotating electrical machine is provided with a cooling channel formed in the stator support member to cool a stator. The stator support member is manufactured to have the cooling channel of a hermetically sealed structure so that a cooling fluid may flow along the cooling channel. In particular, the support member having the cooling channel is divided into a ring-shaped outer part and a ring-shaped inner part (two-piece type) and the separately manufactured ring-shaped outer part and inner part are combined together.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: January 5, 2021
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Myung Kyu Jeong, Jae Min Yu, Ga Eun Lee, Young Jin Seo
  • Patent number: 10886805
    Abstract: A stator for a rotary electric machine includes: a stator core including an annular stator yoke, a plurality of teeth protruding from the stator yoke to an inside in a radial direction, and a plurality of slots formed between adjacent teeth; and a plurality of coils arranged in each of the slots. In the stator core, a coolant distributing plate having an annular shape to surround the plurality of coils from an outer circumferential side is interposed, and the coolant distributing plate is provided with coolant supply portions discharging a coolant toward the plurality of coils.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: January 5, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tadanobu Takahashi, Yoshinori Tanaka
  • Patent number: 10879749
    Abstract: An electric motor can include a stator body defining fluid channels extending axially for fluid communication between axial ends of the stator body. Conductive windings can form first loops extending axially outward from the first end of the stator body and second loops extending axially outward from the second end of the stator body. A first cap can be coupled to the first end of the stator body and can include a first wall. The first wall can be between the first loops and the channels. Pins can extend from a side of the first wall that is opposite the first loops. The second cap can be coupled to the second end of the stator body and include a second wall. The second wall can be between the second loops and the channels. Pins can extend from a side of the second wall that is opposite the second loops.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: December 29, 2020
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: John Morgante, James P. Downs, David Crecelius, Peter Fischer, Jeffrey J. Ronning
  • Patent number: 10873230
    Abstract: The present invention is an amortisseur upgrade which augments features of the traditional amortisseur. By introducing four features, the aggressive differential thermal growth, due to an excessive power onrush, beyond the intended design duty, during generator startup, is managed. The upgrades include: shallow clearance counter-bores in the generator end cap, flexible shorting plates, hollow damper rod ends, and spacers which are integrated into the shorting plates. These features, when implemented into the traditional amortisseur, manage the aggressive thermal growth response of the amortisseur assembly.
    Type: Grant
    Filed: August 4, 2016
    Date of Patent: December 22, 2020
    Assignee: New York Power Authority
    Inventor: Asif Khokhar
  • Patent number: 10862373
    Abstract: A motor unit includes a motor including a rotor to rotate about a motor axis extending in a horizontal direction, and a stator radially outside of the rotor, a housing including a housing space to house the motor, oil in a vertically lower region of the housing space, and an oil passage to feed the oil from the vertically lower region of the housing space to the motor. A channel of the oil passage includes a main reservoir and an auxiliary reservoir to store the oil. Each of the main reservoir and the auxiliary reservoir includes an outflow port to feed the oil to the motor. The main reservoir is located on an upstream side of the auxiliary reservoir in the oil passage. The auxiliary reservoir is structured to receive a portion of the oil overflowing from the main reservoir.
    Type: Grant
    Filed: August 7, 2017
    Date of Patent: December 8, 2020
    Assignee: NIDEC CORPORATION
    Inventors: Yuki Ishikawa, Takayuki Migita, Yasuo Yamaguchi
  • Patent number: 10840764
    Abstract: A motor cooling structure is provided. The structure includes a motor housing that has an inner wall, an outer wall, and a plurality of cooling fins which are disposed on the inner wall. An inlet boss is obliquely connected to the motor housing and an outlet boss is obliquely connected to the motor housing. The outlet boss is spaced apart from the inlet boss. Additionally, a first cooling channel and a second cooling channel are disposed between the inner wall and the outer wall, and are connected in parallel to the inlet boss and the outlet boss.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: November 17, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Woo Hyung Seol, Jae Won Ha, Heung Seok Seo, Yeon Ho Kim, Seokbin Hong, Hee Ra Lee, Yong Sung Jang
  • Patent number: 10840768
    Abstract: An electric motor includes a housing, a stator, and a rotor. The stator is composed of a stator core and a stator coil. The stator coil is composed of a plurality of individual coils provided to teeth of the stator core. The housing has lubricating oil supply portion, through which the lubricating oil is supplied onto coil ends of upper individual coils. A temperature detector for detecting the temperature of the stator coil is disposed at a position lower than an axis of a rotor and higher than an oil level of the lubricating oil accumulated in the bottom portion of the housing.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: November 17, 2020
    Assignee: NTN CORPORATION
    Inventor: Kenichi Suzuki
  • Patent number: 10822933
    Abstract: An electric submersible pump assembly with integral heat exchanger, high-speed self-aligning bearings, and dual bearing thrust chamber is described. The described pump assembly, modules, and components may be used for operating an electric submersible pump at high speeds as well as over a wide range of speeds and flowrates without replacing downhole equipment. The described pump assembly may be shorter than comparable pump assemblies and may be assembled offsite, thereby leading to faster and easier installation with less down time. By operating over a wide range of speeds, the disclosed pump assembly allows the operator to reduce overall inventory, reduce down time for the well, and avoid other complications associated with replacing a pump assembly or other downhole components.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: November 3, 2020
    Assignee: Extract Management Company, LLC
    Inventors: Mitchell Lee Crane, Jose Mauricio Oviedo Gualdron
  • Patent number: 10819172
    Abstract: A rotor for a rotating electric machine is disclosed which includes a rotor yoke including annular magnetic steel sheets stacked in an axial direction having magnet slots into which magnets inserted, Each magnetic steel sheet includes first through-holes to form the first internal cavities; second through-holes, each having a shape fit for each second internal cavity and configured to form part of one of the second internal cavities; and third through-holes, each having a shape for communication between one of the first internal cavities and one of the second internal cavities and to form, with one of the second through-holes, part of the one of the second internal cavities.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: October 27, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Manabu Yazaki
  • Patent number: 10811939
    Abstract: In order to efficiently cool a stator and rotor of a rotating electrical machine, cooling oil is supplied by a pump in a pressurized state to a first reservoir portion provided in an upper portion inside a housing, and after the cooling oil is ejected from the first reservoir portion, the cooling oil is guided to a stator coil end cooling structure, and to a rotor bearing and rotor core cooling structure, using the weight of the cooling oil itself.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 20, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshiaki Kitta, Koichi Ojima, Katsunari Takagi, Masaya Inoue, Hiroyuki Higashino
  • Patent number: 10797542
    Abstract: Stator of an electric machine, wherein the stator has: a magnetic core provided with a plurality of slots; a winding provided with a plurality of bars, each of which has a straight portion inserted inside a respective slot of the magnetic core and two curved sections that are part of two corresponding heads of the winding; and a cooling circuit that is designed to be flown through by a cooling fluid. The cooling circuit has: a plurality of main channels, which are formed inside the magnetic core beside, and radially more on the outside than the slots containing the bars; and a pair of end bodies, each of which is arranged around a corresponding head of the winding and contains a series of joining channels, which are connected to the ends of the main channels.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: October 6, 2020
    Assignee: FERRARI S.P.A.
    Inventor: Luigi Marino
  • Patent number: 10784748
    Abstract: A cooling structure of a rotary electric machine for power generation which includes a rotor and a stator includes a stator core which is formed in an annular shape to surround the rotor and has a plurality of slots arranged in a circumferential direction and extending from one end to the other end in a center axis direction, a conductor which is disposed in the slots and has a protruding portion protruding from the slots in the center axis direction, a cooling unit which cools the protruding portion. Opening portions of the slots are formed in an inner peripheral surface of the stator core, and the opening portions extend toward an upstream side in a rotation direction of the rotor at a time of regeneration from ends on the protruding portion side toward intermediate portions in the center axis direction.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: September 22, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Masashi Inoue
  • Patent number: 10784749
    Abstract: A cooling structure of a rotary electric machine for power generation which includes a rotor and a stator includes a stator core which is formed in an annular shape to surround the rotor and has a plurality of slots arranged in a circumferential direction and extending from one end to another end in a center axis direction, a conductor disposed in the slots, and a cooling unit which cools the conductor. Opening portions of the slots are formed in an inner peripheral surface of the stator core, the opening portions extend toward a downstream side in a rotation direction of the rotor at a time of regeneration from at least one end portions to intermediate portions in the center axis direction, and the cooling unit cools portions of the conductor which are located at the same positions as the intermediate portions of the opening portions in the center axis direction.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: September 22, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Masashi Inoue
  • Patent number: 10784750
    Abstract: The present disclosure pertains to electric machines such as electric propulsion systems for aircraft that integrated cooling systems, and methods of cooling such an electric machine. Exemplary electric machines include an electric motor that has a stator, a rotor, and a drive shaft operably coupled to the rotor. Exemplary electric machines further include a motor cooling conduit that defines a pathway for conveying a cooling fluid through or around at least a portion of the electric motor, a casing assembly that circumferentially surrounds at least a portion of the electric motor, a casing assembly conduit integrally formed within at least a portion of the casing assembly which defines a pathway for conveying the cooling fluid through the at least a portion of the casing assembly, and a pump or compressor operably coupled to the drive shaft and configured to circulate the cooling fluid through the motor cooling conduit and the casing assembly conduit.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: September 22, 2020
    Assignee: General Electric Company
    Inventors: William Dwight Gerstler, Florian Stefan Hoefler, Mark Aaron Chan Chan
  • Patent number: 10778053
    Abstract: To provide a rotor of a rotary electric machine having higher cooling performance than that of the related art. In a rotor structure of a rotary electric machine, on a surface on the side of a rotor core (20) of a first end surface plate (30), a plurality of grooves (33) that radially extend are provided, and a first annular groove (32) that annularly extends along a circumference of an insertion hole (31) into which a shaft (10) is inserted is provided. In addition, the first annular groove (32) is connected to radially inside end portions of the grooves (33) and a refrigerant supply hole portion (12) of the rotor core (20), and a depth of the first annular groove (32) is set to be larger than a depth of the grooves (33).
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: September 15, 2020
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yuta Ito, Takuya Yoshizawa
  • Patent number: 10778056
    Abstract: A stator of an electrical generator includes a stator core including a plurality of stacked stator laminations and at least one end turn. At least one cooling passage provides a fluid flow path through a portion of the plurality of stator laminations to the at least one end turn. The at least one cooling passage includes at least one radial channel arranged in fluid communication with an axial channel. The at least one cooling passage is formed directly into the portion of the plurality of stator laminations.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: September 15, 2020
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 10770949
    Abstract: An electric machine with a housing, in which a stator having a plurality of winding heads is arranged. The housing has at least one cooling channel through which can flow a cooling medium. The cooling channel has at least one circular-shaped or circular-segment-shaped annular channel section, by way of which the cooling medium can be introduced to at least one winding head through at least one opening.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: September 8, 2020
    Assignee: AUDI AG
    Inventor: Albert Scharlach
  • Patent number: 10763728
    Abstract: A coolant distributor for a machine configuration. At least one coolant forward flow inlet opening and at least one coolant return flow outlet opening as well as multiple coolant forward flow outlet openings and multiple coolant return flow inlet openings are formed in a distributor body of the coolant distributor. The coolant forward flow inlet opening is fluidically connected by way of a forward flow chamber present in the distributor body to the coolant flow outlet openings, and the coolant return flow inlet openings are fluidically connected by way of a return flow chamber to the coolant return flow outlet opening and the coolant forward flow inlet opening is separated fluidically within the distributor body from the coolant return flow outlet opening, and wherein the distributor body is composed of two identical parts, which between them form the forward flow chamber and the return flow chamber.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 1, 2020
    Assignees: AUDI AG, Audi Hungaria Zrt
    Inventors: Jason Cox, Axel Pohlmann, Stefan Zucknik, Zsolt Barany
  • Patent number: 10756599
    Abstract: An oil circulation type motor may include an oil circulating device having cooling oil chambers which are formed along the circumference of a stator core and through which cooling oil pumped by an oil pump is introduced and discharged, wherein cooling oil is introduced into the cooling oil chambers, wets a stator coil wound around the stator core, and is then discharged from the cooling oil chambers.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: August 25, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jeong-Bin Yim, Jeong-Min Shin, Hyun-Jun Soh, Seong-Yeop Lim, Young-Jun Lee
  • Patent number: 10749411
    Abstract: A rotary electric machine includes a rotor, a stator which is disposed on an outer circumferential side of the rotor and includes a stator core and a coil, a first cooling mechanism which supplies a coolant to the coil from an outer circumferential side of the stator, and a second cooling mechanism which supplies a coolant to the coil from an inner circumferential side of the stator. The coil includes a plurality of segment cods, each including a pair of leg portions, and a connection portion connecting one end sides of the leg portions. A close-side coil end constituted by the connection portion and an open-side coil end constituted by the lea portions are provided on respective end sides of the stator core. A supply amount of the coolant supplied from the second cooling mechanism is larger to the close-side coil end than to the open-side coil end.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: August 18, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yuta Ito, Tomokazu Naito
  • Patent number: 10742105
    Abstract: The present disclosure relates to cooling devices. The teachings thereof may be embodied in devices for cooling a rotor, which rotates about an axis, wherein the rotor is supported by a central rotor shaft. For example, in a cooling device, the rotor may be supported by a central rotor shaft and comprise a hollow space in the interior of the rotor shaft for accommodating coolant. It may include a first coolant line extending radially outwardly from the hollow space and an annular first distribution line fluidically connected to the hollow space via the first coolant line.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: August 11, 2020
    Assignee: VOIT PATENT GMBH
    Inventors: Anne Bauer, Klaus Dennerlein, Michael Frank, Joern Grundmann, Peter Kummeth, Peter van Hasselt
  • Patent number: 10734867
    Abstract: A high thermal conductivity stator component for vehicle motor based on 3D phase change heat pipe technology of the present invention includes a casing, a 3D phase change heat pipe, a stator core and a stator winding; the casing includes assembly passages for the 3D phase change heat pipe; the 3D phase change heat pipe assembly passages are symmetrically arranged on both sides of the casing body; a condensation section of the 3D phase change heat pipe is assembled in the assembly passages of the casing body, and an evaporation section is bonded to the stator winding. The present invention provides a high thermal conductivity stator component for vehicle motor with a simple structure, convenient installation, wide application and low cost.
    Type: Grant
    Filed: June 8, 2019
    Date of Patent: August 4, 2020
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Yong Tang, Yalong Sun, Wei Yuan, Longsheng Lu, Zongtao Li, Zhenping Wan