Patents by Inventor Yanghe Liu

Yanghe Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11996717
    Abstract: A wireless charging pad includes a rectifier, a receiver coil, a heat spreader plate sandwich between the rectifier and the receiver coil, and a ferrite cold plate sandwiched between the receiver coil and the heat spreader plate. The ferrite cold plate has a fluid inlet, a fluid outlet, and a fluid chamber in fluid communication with the fluid inlet and the fluid outlet. The fluid chamber includes a primary cooling chamber and a secondary cooling chamber. Primary cooling fins extending from the heat spreader plate are disposed in the primary cooling chamber and secondary cooling fins extending from a base of the ferrite cooling plate are disposed in the secondary cooling chamber. The ferrite cooling plate cools the rectifier and inhibits or blocks electromagnetic leakage from the receiver coil from interfering with operation of rectifier.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: May 28, 2024
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Yanghe Liu, Feng Zhou, Ercan Mehmet Dede
  • Patent number: 11997838
    Abstract: Disclosed herein are apparatus and methods for a power electronics assembly that includes a cold plate assembly and one or more power device assemblies. The cold plate assembly has a manifold having a heat sink cavity in a first surface and a heat sink that includes one or more substrate cavities. The heat sink is positioned in the heat sink cavity. The one or more power device assemblies are positioned within the one or more substrate cavities. Each power device assembly includes an S-cell, a power device, and a direct bonded metal substrate bonded to the S-Cell. The S-cell includes a base layer constructed at least of graphite or a graphite-composite, a conductive layer at least partially surrounding the base layer, and a power device cavity. The power device is positioned in the power device cavity and is electrically coupled to the conductive layer.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: May 28, 2024
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa
  • Patent number: 11938875
    Abstract: Systems and methods are provided for wireless power transfer in a vehicle. A wireless power transfer system can include a high-frequency alternating current (HFAC) inverter electrically coupled to the power source and a transmitter to wirelessly transmit a HFAC power signal to at least one device of a vehicle, such as sensors (e.g., LiDAR, GPS etc.) and cameras. The HFAC power signal provides wireless power and a data signal to the at least one device of a vehicle. The wireless power transfer system can eliminate the need for cabling and wires to provide power to the device. Wireless power transfer can include use or a data modulation circuit and a pulse current source to inject a pulse current to the HFAC power signal as superimposed data. System configurations can power a plurality of devices. Systems can includes a plurality of HFAC inverters and transmitters to power multiple sets of devices.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: March 26, 2024
    Assignees: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC., THE REGENTS OF THE UNIVERSITY OF MICHIGAN
    Inventors: Yanghe Liu, Chungchih Chou, Hiroshi Ukegawa, Qunfang Wu, Mengqi Wang, Weiyang Zhou
  • Patent number: 11889666
    Abstract: Disclosed herein are apparatus and methods for a power electronics assembly includes a cold plate assembly and one or more power device assemblies. The cold plate assembly includes a manifold including a heat sink cavity in a first surface and a heat sink. The heat sink includes one or more substrate cavities and the heat sink is positioned in the heat sink cavity. The one or more power device assemblies are positioned within the one or more substrate cavities. Each power device assembly of the one or more power assemblies includes a direct bonded metal (DBM) substrate including a first metal layer directly bonded to an insulator layer and a power device. The DBM substrate includes a power device cavity. The power device is positioned in the power device cavity and the power device is electronically coupled to the first metal layer.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: January 30, 2024
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa
  • Publication number: 20240006916
    Abstract: A wireless inductive charging apparatus includes first and second coil boards arranged in parallel, each coil board having a substrate and a first metallic trace forming a first inductive winding disposed on a first surface of the substrate. The apparatus includes an electrically-insulating and thermally-conductive insert board arranged between and adjacent to the first and second coil boards, the insert board including microchannels to provide cooling to the coil boards. The first coil board, the insert board and second coil board are arranged in a stacked formation to generate electric power when exposed to a changing magnetic field. Each coil board can also include a second metallic trace forming a second inductive winding disposed on a second surface of the substrate, the second surface on an opposite side of the substrate relative to the first surface. Additional coil boards and insert boards can be added to the stacked arrangement.
    Type: Application
    Filed: July 1, 2022
    Publication date: January 4, 2024
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yanghe Liu, Feng Zhou, Hiroshi Ukegawa
  • Publication number: 20240006919
    Abstract: A rectifier apparatus for a wireless inductive charging system includes a first PCB having a metal layer, a dielectric layer provided on a surface of the metal layer, and a circuit layer provided on an opposite surface of the dielectric layer relative to the metal layer, the circuit layer including copper traces and circuit components, the circuit components including a capacitor array. The apparatus includes a second PCB having a non-metallic substrate and a plurality of inductors formed in the non-metallic substrate, each inductor comprised of a magnetic core and metallic windings, where the plurality of inductors are electrically coupled forming an inductor array. The circuit layer of the first PCB and the inductor array of the second PCB are electrically coupled to form a rectifier circuit to provide DC power. The circuit layer and the inductor array can be electrically coupled via aligned contact pads on each PCB.
    Type: Application
    Filed: July 1, 2022
    Publication date: January 4, 2024
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., The Regents of the University of Michigan, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yanghe Liu, Guanliang Liu, Mengqi Wang, Feng Zhou, Hiroshi Ukegawa
  • Patent number: 11856689
    Abstract: Disclosed herein are power electronics assemblies which include a printed circuit board (PCB) having a plurality of conductive layers and a cold plate contacting the PCB. The cold plate includes a manifold constructed from an electrically insulating material and including a first cavity and a second cavity. The cold plate further includes a first heat sink positioned in the first cavity and thermally coupled to the plurality of conductive layers. The cold plate further includes a second heat sink positioned in the second cavity and thermally coupled to the plurality of conductive layers.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: December 26, 2023
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa, Ercan Dede
  • Publication number: 20230395897
    Abstract: A coolant manifold assembly is provided. The coolant manifold assembly may include a manifold body having a coolant delivering channel delivering coolant to a charging module fluidly communicating with the coolant delivering channel, and a coolant receiving channel receiving the coolant from the charging module fluidly communicating with the coolant receiving channel. The coolant manifold further include a bus bar disposed on the manifold body, the bus bar transmits power received from the charging module to a battery.
    Type: Application
    Filed: June 2, 2022
    Publication date: December 7, 2023
    Applicants: Toyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yanghe Liu, Feng Zhou, Hiroshi Ukegawa
  • Publication number: 20230318356
    Abstract: An aerial vehicle is provided. The aerial vehicle may include a battery, a receiver for wirelessly receiving power to charge the battery, a vehicle magnetic levitation module providing a repelling force between the aerial vehicle and a charging station, and a controller controlling the vehicle magnetic levitation module to adjust a level of the repelling force based on at least one of parameters indicative of charging efficiency.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Applicant: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Yanghe Liu, Shailesh N. Joshi, Hiroshi Ukegawa
  • Publication number: 20230307406
    Abstract: In one embodiment, an electronics assembly includes a cold plate assembly having a first surface, at least one power electronic device disposed within a recess on the first surface of the cold plate assembly, and a printed circuit board disposed on a surface of the at least one power electronic device. The printed circuit board includes a first insulation layer, a second insulation layer, an electrically conductive power layer between the first insulation layer and the second insulation layer, a first set of thermal vias extending from the electrically conductive power layer and toward the first surface of the cold plate assembly, and a second set of thermal vias extending from the first surface of the cold plate assembly toward the electrically conductive power layer. The first set of thermal vias is electrically isolated from the second set of thermal vias.
    Type: Application
    Filed: March 22, 2022
    Publication date: September 28, 2023
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa
  • Publication number: 20230284377
    Abstract: Disclosed herein are power electronics assemblies which include a printed circuit board (PCB) having a plurality of conductive layers and a cold plate contacting the PCB. The cold plate includes a manifold constructed from an electrically insulating material and including a first cavity and a second cavity. The cold plate further includes a first heat sink positioned in the first cavity and thermally coupled to the plurality of conductive layers. The cold plate further includes a second heat sink positioned in the second cavity and thermally coupled to the plurality of conductive layers.
    Type: Application
    Filed: January 28, 2022
    Publication date: September 7, 2023
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa, Ercan Dede
  • Publication number: 20230241987
    Abstract: A dynamic wireless power transfer system can include a dynamic wireless power transfer transmission system and a dynamic wireless power transfer reception system. The dynamic wireless power transfer transmission system can include a signal receiver, an array of coils of conductors, an array of switches, and a controller. The dynamic wireless power transfer reception system can include a signal transmitter and an array of coils of conductors. The signal transmitter can be configured to transmit, to the signal receiver, a signal. The signal can include information indicative of a size of the array of coils of conductors of the dynamic wireless power transfer reception system. The array of switches can be configured to connect an alternating current source to the array of coils of conductors of the dynamic wireless power transfer transmission system. The controller can control, according to the information, positions of switches of the array of switches.
    Type: Application
    Filed: January 28, 2022
    Publication date: August 3, 2023
    Inventors: Yanghe Liu, Shailesh N. Joshi
  • Publication number: 20230247807
    Abstract: Disclosed herein are apparatus and methods for a power electronics assembly that includes a cold plate assembly and one or more power device assemblies. The cold plate assembly has a manifold having a heat sink cavity in a first surface and a heat sink that includes one or more substrate cavities. The heat sink is positioned in the heat sink cavity. The one or more power device assemblies are positioned within the one or more substrate cavities. Each power device assembly includes an S-cell, a power device, and a direct bonded metal substrate bonded to the S-Cell. The S-cell includes a base layer constructed at least of graphite or a graphite-composite, a conductive layer at least partially surrounding the base layer, and a power device cavity. The power device is positioned in the power device cavity and is electrically coupled to the conductive layer.
    Type: Application
    Filed: February 1, 2022
    Publication date: August 3, 2023
    Applicant: Toyota Motor Engineering & Manufacturing North America Inc.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa
  • Patent number: 11691718
    Abstract: An aerial vehicle includes a body and a wireless charging receiver pad connected to the body, whereby the aerial vehicle is configured to be wirelessly charged when parked above a wireless charging transmitter pad. The aerial vehicle includes landing gear connected to the body and extending underneath the body. The landing gear is configured for actuation to control the location of the receiver pad with respect to the transmitter pad.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: July 4, 2023
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Yanghe Liu, Shailesh N. Joshi
  • Publication number: 20230192316
    Abstract: Systems, methods, and other embodiments described herein relate to charging a battery of an electric vehicle while the electric vehicle is hovering. In one embodiment, a method includes, responsive to determining that an electric vehicle does not include a receiver pad, inserting the receiver pad into the electric vehicle that is hovering in the air at a charging station. The method includes determining a space above a transmitter pad for the electric vehicle to hover based, at least in part, on a location and a size of the transmitter pad. The method includes charging a battery to a threshold value through the receiver pad.
    Type: Application
    Filed: December 22, 2021
    Publication date: June 22, 2023
    Inventors: Shailesh N. Joshi, Yanghe Liu
  • Publication number: 20230150383
    Abstract: A panel for wireless charging of an electric vehicle includes a metamaterial panel with a first shape and a second shape different than the first shape. The metamaterial panel is configured to be positioned between a transmitter coil of a wireless power transfer station (WPTS) and a receiver coil of the electric vehicle during wireless charging of the electric vehicle and change between the first shape and the second shape as a function of at least one of a size of the transmitter coil, a size of the receiver coil, and a distance between the transmitter coil and the receiver coil. A robot with at least one of a robotic arm and a robotic buggy can be included and the metamaterial panel can be coupled to the robot. And the robot is configured to position the metamaterial panel between the transmitter coil of the WPTS and the receiver coil of the electric vehicle during wireless charging of the electric vehicle.
    Type: Application
    Filed: November 15, 2021
    Publication date: May 18, 2023
    Inventors: Yanghe Liu, Shailesh N. Joshi
  • Publication number: 20230133184
    Abstract: An aerial vehicle includes a body and a wireless charging receiver pad connected to the body, whereby the aerial vehicle is configured to be wirelessly charged when parked above a wireless charging transmitter pad. The aerial vehicle includes landing gear connected to the body and extending underneath the body. The landing gear is configured for actuation to control the location of the receiver pad with respect to the transmitter pad.
    Type: Application
    Filed: October 29, 2021
    Publication date: May 4, 2023
    Inventors: Yanghe Liu, Shailesh N. Joshi
  • Publication number: 20230139202
    Abstract: Disclosed herein are apparatus and methods for a power electronics assembly includes a cold plate assembly and one or more power device assemblies. The cold plate assembly includes a manifold including a heat sink cavity in a first surface and a heat sink. The heat sink includes one or more substrate cavities and the heat sink is positioned in the heat sink cavity. The one or more power device assemblies are positioned within the one or more substrate cavities. Each power device assembly of the one or more power assemblies includes a direct bonded metal (DBM) substrate including a first metal layer directly bonded to an insulator layer and a power device. The DBM substrate includes a power device cavity. The power device is positioned in the power device cavity and the power device is electronically coupled to the first metal layer.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 4, 2023
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Feng Zhou, Yanghe Liu, Hiroshi Ukegawa
  • Publication number: 20230085399
    Abstract: A wireless charging pad includes a rectifier, a receiver coil, a heat spreader plate sandwich between the rectifier and the receiver coil, and a ferrite cold plate sandwiched between the receiver coil and the heat spreader plate. The ferrite cold plate has a fluid inlet, a fluid outlet, and a fluid chamber in fluid communication with the fluid inlet and the fluid outlet. The fluid chamber includes a primary cooling chamber and a secondary cooling chamber. Primary cooling fins extending from the heat spreader plate are disposed in the primary cooling chamber and secondary cooling fins extending from a base of the ferrite cooling plate are disposed in the secondary cooling chamber. The ferrite cooling plate cools the rectifier and inhibits or blocks electromagnetic leakage from the receiver coil from interfering with operation of rectifier.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 16, 2023
    Inventors: Yanghe Liu, Feng Zhou, Ercan Mehmet Dede
  • Publication number: 20230067293
    Abstract: System, methods, and other embodiments described herein relate to using a printed conductor and a rectifier in the same enclosure for transferring power. In one embodiment, an apparatus includes a conductor, printed on a substrate housed in an enclosure, that generates alternating current caused by a magnetic field emitted by a transmitter, wherein the conductor is a trace spanning layers. The apparatus also includes a rectifier, on a device housed in the enclosure, that receives the alternating current through a terminal connected with the conductor and converts the alternating current to a direct current for powering a load, wherein an insulator between the conductor and the rectifier isolates the magnetic field.
    Type: Application
    Filed: August 25, 2021
    Publication date: March 2, 2023
    Inventors: Yanghe Liu, Feng Zhou, Hiroshi Ukegawa