Liquid Coolant Patents (Class 310/54)
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Patent number: 11451103Abstract: An electrical machine includes a rotor that is rotatable about a rotation axis, and includes a stator having electrically conductive stator windings. The machine includes a cooling channel through for cooling the stator windings. The stator has teeth extending arranged at a distance from one another along a circumferential direction of the rotor, the stator teeth protruding inwardly and carrying the stator windings. An interspace is formed between two stator teeth which are adjacent in the circumferential direction. An interspace is arranged in an insulation body having outer walls composed of a plastic, which delimit a body interior, in which a winding zone and a channel zone are provided. A stator winding is arranged in the at least one winding zone of the insulation body and a cooling channel for a is arranged in the at least one channel zone of the insulation body.Type: GrantFiled: November 18, 2019Date of Patent: September 20, 2022Inventors: Roberto Almeida E Silva, Bernd Blankenbach, Terry Cox, Philip Grabherr, Niklas Kull, Tim Male, Peter Pisek, Peter Sever, Josef Sonntag, Martin Williams
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Patent number: 11441096Abstract: A lubricant formulation for an electric or hybrid vehicle includes a base oil, or a blend thereof, one or more additives, and a molybdenum amine complex, such as diisotridecylamine molybdate, are provided. Lubricant formulations can be characterized by one of: improving electric motor protection when a volatage is applied to an electrode in the presence of a formulation comprising the diisotridecylamine molybdate additive as compared to a fluid lacking the diisotridecylamine molybdate additive; maintaining the electrical resistance slope of a formulation comprising the diisotridecylamine molybdate additive as compared to a fluid lacking the diisotridecylamine molybdate additive; the formulation forming a protective film on copper surfaces; a change in color of the formulation indicating contact load, temperature, time, or viscosity change.Type: GrantFiled: April 26, 2020Date of Patent: September 13, 2022Assignee: VALVOLINE LICENSING AND INTELLECTUAL PROPERTY LLCInventors: Anant Kolekar, James Brown, Frances Lockwood, Dale Reid
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Patent number: 11444508Abstract: An electric motor includes a rotor, a stator, and an electric motor casing. The electric motor casing forms a first accommodating space accommodating a rotary shaft and a rotor core and a stator, and has an inner peripheral surface including an abutting inner peripheral surface in contact with a top portion on the radially outer side of a core convex portion. An outer peripheral-side flow path through which a cooling medium is capable of flowing is formed between the core convex portions adjacent to each other in the peripheral direction. The outer peripheral-side flow path is defined by an outer peripheral surface of the core main body and the inner peripheral surface of the electric motor casing.Type: GrantFiled: October 24, 2018Date of Patent: September 13, 2022Assignee: Komatsu Ltd.Inventors: Takuya Kanada, Takaaki Kimura, Ryuichi Kuramae, Teiichirou Chiba, Atsuyoshi Koshiba, Akira Minamiura
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Patent number: 11411468Abstract: The present invention provides a motor that comprises: a housing; a stator disposed in the housing and having a coil wound therearound; a rotor disposed at an inner side of the stator; a shaft coupled to the rotor; a bus bar-terminal assembly disposed at an upper side of the stator, wherein the bus bar-terminal assembly comprises: a bus bar including a connection terminal coupled to the coil and a terminal connected to an external power supply; and a body disposed at the upper side of the stator such that a part of the bus bar is located inside of the body; wherein a part of the connection terminal and a part of the terminal protrude to an outside of the body, wherein the body includes an alignment guide part formed at an outer circumferential surface of the body to be slide-coupled to an inner circumferential surface of the housing, wherein the connection terminal and the terminal are exposed at an upper surface of the body, wherein the body includes a coil hole through which a connection end of the coil pasType: GrantFiled: June 17, 2020Date of Patent: August 9, 2022Assignee: LG INNOTEK CO., LTD.Inventors: Seong Jin Kim, Chang Hyun Park, Kyung Sang Park
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Patent number: 11381138Abstract: A cooling cap for a stator of an electrical machine of a motor vehicle is provided. The cooling cap can be fitted onto an end winding of electrical windings of the stator which project beyond an axial end of a laminated core of the stator and which cooling cap is designed as a heat sink for cooling the end winding, wherein the cooling cap is formed, at least in regions, from an electrical insulating material. A stator and a motor vehicle including the cooling cap are also provided.Type: GrantFiled: April 15, 2020Date of Patent: July 5, 2022Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Julian Blum, Andreas Huber, Jerome Ragot, Jens Richter
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Patent number: 11374464Abstract: A detection part of a temperature detection element is mounted to ends of drawn portions which are further protruded in the axial direction than coil end portions. The detection part and the ends of the drawn portions provided with the detection part are covered with a covering member. The ends of the drawn portions provided with the detection part and covered with the covering member are inserted into a through hole of a wall member which is disposed so as to axially face an axial end face of a stator core. In this case, the detection part is located at a position deeper (on the rear side) than a position of a stator core side opening of the through hole.Type: GrantFiled: October 28, 2019Date of Patent: June 28, 2022Assignee: DENSO CORPORATIONInventors: Tomoyuki Shinkai, Takashi Satou, Takeo Maekawa
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Patent number: 11374445Abstract: A stator unit of a rotary electric machine, which includes a stator including a stator core in which a plurality of slots are formed at predetermined intervals in a circumferential direction; and a stator coil inserted into the slots and having a coil end portion protruding from at least one end surface of the stator core; a stator holder disposed to surround an outer peripheral surface of the stator core and supporting the stator; and a refrigerant guide portion disposed above the coil end portion and configured to supply a first refrigerant to the coil end portion. The refrigerant guide portion protrudes from an end surface of the stator holder to above the coil end portion and is integrally formed with the stator holder.Type: GrantFiled: November 4, 2019Date of Patent: June 28, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Hirotaka Yokota, Manabu Sakurada
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Patent number: 11368072Abstract: 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: GrantFiled: November 6, 2019Date of Patent: June 21, 2022Assignee: SUBARU CORPORATIONInventor: Shutaro Yamada
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Patent number: 11356001Abstract: 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: GrantFiled: March 9, 2020Date of Patent: June 7, 2022Assignee: Bayerische Motoren Werke AktiengesellschaftInventors: Andreas Huber, Benjamin Krank, Jens Richter
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Patent number: 11339706Abstract: 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: GrantFiled: June 22, 2020Date of Patent: May 24, 2022Assignee: KOREA AEROSPACE RESEARCH INSTITUTEInventors: Keun Bae Kim, Byeong Gyu Gang
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Patent number: 11336151Abstract: 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: GrantFiled: May 6, 2019Date of Patent: May 17, 2022Assignees: ROLLS-ROYCE PLC, ROLLS-ROYCE CORPORATIONInventors: David Scothern, Mark Boden, Don Klemen, William Williamson, Brian Maners
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Patent number: 11325458Abstract: 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: GrantFiled: June 29, 2018Date of Patent: May 10, 2022Assignee: ZF FRIEDRICHSHAFEN AGInventors: Linus Eschenbeck, Hermann Thurn, Matthias Held
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Patent number: 11309771Abstract: 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: GrantFiled: May 14, 2020Date of Patent: April 19, 2022Assignee: FANUC CORPORATIONInventor: Suguru Takamizawa
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Patent number: 11309758Abstract: 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: GrantFiled: May 27, 2020Date of Patent: April 19, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Takashi Wakui, Yasuhiro Fujita
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Patent number: 11300127Abstract: 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: GrantFiled: December 13, 2018Date of Patent: April 12, 2022Assignee: NIDEC TOSOK CORPORATIONInventors: Shigehiro Kataoka, Yoshiyuki Kobayashi
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Patent number: 11293390Abstract: 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: GrantFiled: August 12, 2020Date of Patent: April 5, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Stephan Revidat, Johannes Ullrich
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Patent number: 11283316Abstract: 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: GrantFiled: February 28, 2020Date of Patent: March 22, 2022Assignee: HONDA MOTOR CO., LTD.Inventor: Shuhei Tanaka
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Patent number: 11283332Abstract: 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: GrantFiled: February 26, 2018Date of Patent: March 22, 2022Assignee: Mitsubishi Electric CorporationInventors: Junji Kitao, Tomohira Takahashi, Yusuke Kimoto, Yoshihiro Miyama, Masatsugu Nakano, Yuya Tanaka
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Patent number: 11271444Abstract: 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: GrantFiled: December 26, 2018Date of Patent: March 8, 2022Assignee: Hefei Jee Power Systems, Co., Ltd.Inventors: Lei Liu, Jialun Fan, Chunzhe Sun, Yuehua Li, Jingwei Cui
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Patent number: 11261921Abstract: 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: GrantFiled: February 19, 2020Date of Patent: March 1, 2022Assignee: Schaeffler Technologies AG & Co. KGInventors: Micah Steiner, Matthew Payne, Patrick Lindemann
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Patent number: 11264852Abstract: 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: GrantFiled: November 12, 2018Date of Patent: March 1, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Takenori Hashimoto
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Patent number: 11251669Abstract: 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: GrantFiled: March 28, 2019Date of Patent: February 15, 2022Assignee: SAFRAN ELECTRICAL & POWERInventor: Paul David Flower
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Patent number: 11251681Abstract: 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: GrantFiled: December 29, 2016Date of Patent: February 15, 2022Assignee: KOCH ENGINEERED SOLUTIONS, LLCInventors: Russel H. Marvin, Dylan Broomfield, David Leach
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Patent number: 11251682Abstract: 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: GrantFiled: June 19, 2017Date of Patent: February 15, 2022Assignee: LG Magna e-Powertrain Co., Ltd.Inventors: Sungsoo Lee, Yongsoo Kang, Junghwan Kim, Shuang Liu, Seunghyun Jeong
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Patent number: 11230941Abstract: 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: GrantFiled: June 29, 2020Date of Patent: January 25, 2022Assignee: ROLLS-ROYCE PLCInventor: Jonathan P Bradley
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Patent number: 11221054Abstract: 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: GrantFiled: November 26, 2019Date of Patent: January 11, 2022Assignee: GARRETT TRANSPORTATION I INCInventors: Milan Nejedly, Vit Houst, Daniel Turecek, Pavel Krejci, Zbynek Oslejsek
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Patent number: 11223247Abstract: 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: GrantFiled: August 3, 2018Date of Patent: January 11, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kentaro Haruno, Makoto Yoshikawa
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Patent number: 11223257Abstract: 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: GrantFiled: October 18, 2019Date of Patent: January 11, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Noriaki Fujita, Norifumi Yasuda
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Patent number: 11218057Abstract: 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: GrantFiled: November 27, 2017Date of Patent: January 4, 2022Assignee: DANA TM4 INC.Inventors: Eric Latulipe, Yannick Philibert, Jean-Philippe Dextraze, Martin Houle, Jean-Philippe Desbiens, Mathieu Lepage, Francois Dube
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Patent number: 11209221Abstract: 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: GrantFiled: April 21, 2020Date of Patent: December 28, 2021Assignee: Raytheon Technologies CorporationInventors: Brandon W. Spangler, David R. Pack, William P. Stillman
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Patent number: 11208859Abstract: 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: GrantFiled: March 13, 2020Date of Patent: December 28, 2021Assignee: LAVALLEY INDUSTRIES, LLCInventors: Jason LaValley, Douglas Coutlee, Daniel Larson
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Patent number: 11205932Abstract: 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: GrantFiled: October 18, 2019Date of Patent: December 21, 2021Assignee: HONDA MOTOR CO., LTD.Inventors: Tatsuya Ohzu, Tadashi Yamaguchi
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Patent number: 11190063Abstract: 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: GrantFiled: May 18, 2018Date of Patent: November 30, 2021Inventors: Mirko Hoerz, Hans-Ulrich Steurer, Josef Sonntag, Stojan Markic, Andrej Licen, Aleks Medvescek, Peter Sever, Philip Grabherr
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Patent number: 11190064Abstract: 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: GrantFiled: December 27, 2019Date of Patent: November 30, 2021Assignee: MAHLE International GmbHInventors: Mirko Hoerz, Hans-Ulrich Steurer, Josef Sonntag, Stojan Markic, Andrej Licen, Aleks Medvescek, Peter Sever, Philip Grabherr
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Patent number: 11171552Abstract: 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: GrantFiled: February 7, 2019Date of Patent: November 9, 2021Assignee: Siemens AktiengesellschaftInventors: Jörg Müller, Alexandra Schneider
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Patent number: 11165306Abstract: 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: GrantFiled: May 23, 2016Date of Patent: November 2, 2021Assignee: Mitsubishi Electric CorporationInventors: Manabu Yoshinori, Masaya Inoue, Yoshiaki Kitta
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Patent number: 11142064Abstract: 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: GrantFiled: March 27, 2019Date of Patent: October 12, 2021Assignee: Honda Motor Co., Ltd.Inventors: Tatsuya Ohzu, Yutaka Arimura, Daisuke Hoshino, Shingo Soma, Yosuke Tanaka
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Patent number: 11146124Abstract: 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: GrantFiled: May 11, 2017Date of Patent: October 12, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takahiro Joyo, Haruyuki Kometani, Nobuyuki Sora
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Patent number: 11139719Abstract: 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: GrantFiled: February 13, 2019Date of Patent: October 5, 2021Assignee: Hamilton Sundstrand CorporationInventor: Brian C. Konopa
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Patent number: 11139720Abstract: 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: GrantFiled: August 7, 2017Date of Patent: October 5, 2021Assignee: NIDEC CORPORATIONInventors: Yasuo Yamaguchi, Takayuki Migita, Yuki Ishikawa
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Patent number: 11125108Abstract: 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: GrantFiled: December 12, 2019Date of Patent: September 21, 2021Assignee: BorgWarner Inc.Inventor: Tyler R. Garrard
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Patent number: 11114917Abstract: 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: GrantFiled: February 26, 2020Date of Patent: September 7, 2021Assignee: Schaeffler Technologies AG & Co. KGInventors: Mohammad Moasher, Victor Norwich, Kyle Nelson, Matthew Payne
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Patent number: 11108303Abstract: 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: GrantFiled: August 22, 2016Date of Patent: August 31, 2021Assignee: Ford Global Technologies, LLCInventors: Franco Leonardi, Prasad Dev Hanumalagutti, Michael W. Degner
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Patent number: 11108286Abstract: 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: GrantFiled: May 30, 2018Date of Patent: August 31, 2021Assignee: Trane International Inc.Inventor: Fredrik Boxberg
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Patent number: 11095191Abstract: 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: GrantFiled: January 8, 2019Date of Patent: August 17, 2021Assignee: Saudi Arabian Oil CompanyInventors: Christopher Wrighton, Jinjiang Xiao
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Patent number: 11095192Abstract: 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: GrantFiled: January 28, 2020Date of Patent: August 17, 2021Inventor: Arthur Leon Kowitz
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Patent number: 11095183Abstract: 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: GrantFiled: September 25, 2019Date of Patent: August 17, 2021Assignee: NIDEC TOSOK CORPORATIONInventors: Yoshiyuki Kobayashi, Tatsuo Abe, Hitoshi Sakamoto
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Patent number: 11095187Abstract: 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: GrantFiled: July 19, 2018Date of Patent: August 17, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshitada Yamagishi, Takayori Sakakibara
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Patent number: 11085006Abstract: 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: GrantFiled: July 12, 2019Date of Patent: August 10, 2021Assignee: Afton Chemical CorporationInventor: Yungwan Kwak
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Patent number: 11070110Abstract: 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: GrantFiled: March 7, 2019Date of Patent: July 20, 2021Assignee: HONDA MOTOR CO., LTD.Inventor: Yoshinori Tanaka