Patents by Inventor Lixin Tang

Lixin Tang 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: 11621656
    Abstract: An electrical drive system for a vehicle. The system includes a plurality of electric propulsion motors and a plurality of corresponding inverter circuits. The system also includes an auxiliary motor for driving an auxiliary device located in the vehicle. The auxiliary motor is connected to the propulsion motors and is driven by the inverter circuits. The system does not include a separate inverter for driving the auxiliary motor.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: April 4, 2023
    Assignee: Karma Automotive LLC
    Inventors: Lixin Tang, Geng Niu
  • Publication number: 20220399162
    Abstract: The present disclosure relates to systems and configurations for phase-shift autotransformers and multi-pulse rectifiers. A phase-shift autotransformer includes a wiring configuration for first, second and third magnetic cores, the wiring configuration including primary input and phase-shift windings. The primary input windings are configured to provide a first and second primary input inductances, and phase-shift windings of the wiring configuration are configured to provide multiple inductances for each phase-shift winding. A multi-pulse rectifier is provided including a phase-shifting autotransformer, a diode bridge rectifier configuration coupled to output of the autotransformer and a filtering capacitor coupled to the diode bridge rectifier. Other embodiments are directed to use of the multi-use rectifier system with vehicle charging station, such as an Electric Vehicle Supply Equipment (EVSE).
    Type: Application
    Filed: August 22, 2022
    Publication date: December 15, 2022
    Applicant: Karma Automotive LLC
    Inventors: Xiaohang Yu, Lixin Tang, Geng Niu
  • Patent number: 11450477
    Abstract: The present disclosure relates to systems and configurations for phase-shift autotransformers and multi-pulse rectifiers. A phase-shift autotransformer includes a wiring configuration for first, second and third magnetic cores, the wiring configuration including primary input and phase-shift windings. The primary input windings are configured to provide a first and second primary input inductances, and phase-shift windings of the wiring configuration are configured to provide multiple inductances for each phase-shift winding. A multi-pulse rectifier is provided including a phase-shifting autotransformer, a diode bridge rectifier configuration coupled to output of the autotransformer and a filtering capacitor coupled to the diode bridge rectifier. Other embodiments are directed to use of the multi-use rectifier system with vehicle charging station, such as an Electric Vehicle Supply Equipment (EVSE).
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: September 20, 2022
    Assignee: Karma Automotive LLC
    Inventors: Xiaohang Yu, Lixin Tang, Geng Niu
  • Patent number: 11251726
    Abstract: An inverter assembly for an electric vehicle. The inverter assembly includes three inverters driving at least one wheel of the vehicle. Each inverter has a different phases angle relative to the other inverters in order to minimize current ripple and reduce the capacitor size to allow a smaller package for the inverter assembly.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: February 15, 2022
    Assignee: KARMA AUTOMOTIVE LLC
    Inventors: Lixin Tang, Geng Niu
  • Patent number: 11235676
    Abstract: A combined bi-directional converter and an auxiliary power module circuit for an 800V battery of an electric vehicle. The converter providing a stepped voltage of 400V with a duty ratio of 50 percent. The combined circuit comprises a high voltage side and a low voltage side. A transformer provides an interface between the high voltage side and the low voltage side. The combined circuit comprises a buck and boost mode.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: February 1, 2022
    Assignee: Karma Automotive LLC
    Inventors: Lixin Tang, Geng Niu, Harshith Kulai
  • Publication number: 20210376776
    Abstract: An electrical drive system for a vehicle. The system includes a plurality of electric propulsion motors and a plurality of corresponding inverter circuits. The system also includes an auxiliary motor for driving an auxiliary device located in the vehicle. The auxiliary motor is connected to the propulsion motors and is driven by the inverter circuits. The system does not include a separate inverter for driving the auxiliary motor.
    Type: Application
    Filed: August 12, 2021
    Publication date: December 2, 2021
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Lixin TANG, Geng Niu
  • Patent number: 11159108
    Abstract: An electrical drive system for a vehicle. The system includes a plurality of electric propulsion motors and a plurality of corresponding inverter circuits. The system also includes an auxiliary motor for driving an auxiliary device located in the vehicle. The auxiliary motor is connected to the propulsion motors and is driven by the inverter circuits. The system does not include a separate inverter for driving the auxiliary motor.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: October 26, 2021
    Assignee: KARMA AUTOMOTIVE LLC
    Inventors: Lixin Tang, Geng Niu
  • Publication number: 20210305919
    Abstract: An inverter assembly for an electric vehicle. The inverter assembly includes three inverters driving at least one wheel of the vehicle. Each inverter has a different phases angle relative to the other inverters in order to minimize current ripple and reduce the capacitor size to allow a smaller package for the inverter assembly.
    Type: Application
    Filed: March 26, 2020
    Publication date: September 30, 2021
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Lixin TANG, Geng Niu
  • Publication number: 20210305920
    Abstract: An electrical drive system for a vehicle. The system includes a plurality of electric propulsion motors and a plurality of corresponding inverter circuits. The system also includes an auxiliary motor for driving an auxiliary device located in the vehicle. The auxiliary motor is connected to the propulsion motors and is driven by the inverter circuits. The system does not include a separate inverter for driving the auxiliary motor.
    Type: Application
    Filed: March 25, 2020
    Publication date: September 30, 2021
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Lixin TANG, Geng NIU
  • Publication number: 20210304958
    Abstract: The present disclosure relates to systems and configurations for phase-shift autotransformers and multi-pulse rectifiers. A phase-shift autotransformer includes a wiring configuration for first, second and third magnetic cores, the wiring configuration including primary input and phase-shift windings. The primary input windings are configured to provide a first and second primary input inductances, and phase-shift windings of the wiring configuration are configured to provide multiple inductances for each phase-shift winding. A multi-pulse rectifier is provided including a phase-shifting autotransformer, a diode bridge rectifier configuration coupled to output of the autotransformer and a filtering capacitor coupled to the diode bridge rectifier. Other embodiments are directed to use of the multi-use rectifier system with vehicle charging station, such as an Electric Vehicle Supply Equipment (EVSE).
    Type: Application
    Filed: March 31, 2020
    Publication date: September 30, 2021
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Xiaohang YU, Lixin TANG, Geng NIU
  • Patent number: 11016263
    Abstract: Provided are a lens drive motor, a camera and a mobile terminal apparatus. The lens drive motor includes a housing, a lens support, a coil and a magnet component; the coil is wrapped around the lens support and is provided in the housing; the magnet component is provided between the housing and the lens support, wherein a portion, corresponding to the magnet component, of the housing is made of a first material, and other portions of the housing are made of a second material; and a magnetic conductivity of the second material is smaller than a magnetic conductivity of the first material. A problem of insufficient driving force of the lens drive motor in a related technology is solved by the present disclosure.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: May 25, 2021
    Assignee: Shanghai Billu Electronics Co., Ltd.
    Inventors: Jianhua Wang, Gaofeng Gong, Lixin Tang
  • Patent number: 10978980
    Abstract: A switched reluctance motor for an electric vehicle. The switched reluctance motor includes an inverter with switchable windings to control the inductance of the motor. The motor also includes a high speed and low speed mode corresponding to the inductance of the motor. The inverter may include parallel switches, selectively running current to the windings in order to control the inductance.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: April 13, 2021
    Assignee: KARMA AUTOMOTIVE LLC
    Inventors: Lixin Tang, Geng Niu
  • Patent number: 10951146
    Abstract: A segmented electrical drive system comprising a DC power bus comprising a DC voltage supply and a capacitor in parallel, an inverter comprising a plurality of inverter segments, a motor including a plurality of stator winding segments each connected to an inverter segment, and a controller. The controller receives a control signal and sends a switching signal to each of the inverter segments, wherein the switching signal is based on a discontinuous space vector pulse width modulation (DSVPWM) scheme for a segmented inverter. The DSVPWM scheme includes a set of reverse sawtooth carrier signals that are at an optimal phase shift angle with respect to each other.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: March 16, 2021
    Assignee: Karma Automotive LLC
    Inventors: Lixin Tang, Geng Niu
  • Publication number: 20210075352
    Abstract: A segmented electrical drive system comprising a DC power bus comprising a DC voltage supply and a capacitor in parallel, an inverter comprising a plurality of inverter segments, a motor including a plurality of stator winding segments each connected to an inverter segment, and a controller. The controller receives a control signal and sends a switching signal to each of the inverter segments, wherein the switching signal is based on a discontinuous space vector pulse width modulation (DSVPWM) scheme for a segmented inverter. The DSVPWM scheme includes a set of reverse sawtooth carrier signals that are at an optimal phase shift angle with respect to each other.
    Type: Application
    Filed: September 9, 2019
    Publication date: March 11, 2021
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Lixin TANG, Geng NIU
  • Publication number: 20210013822
    Abstract: A switched reluctance motor for an electric vehicle. The switched reluctance motor includes an inverter with switchable windings to control the inductance of the motor. The motor also includes a high speed and low speed mode corresponding to the inductance of the motor. The inverter may include parallel switches, selectively running current to the windings in order to control the inductance.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 14, 2021
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Lixin Tang, Geng Niu
  • Publication number: 20200398686
    Abstract: A combined bi-directional converter and an auxiliary power module circuit for an 800V battery of an electric vehicle. The converter providing a stepped voltage of 400V with a duty ratio of 50 percent. The combined circuit comprises a high voltage side and a low voltage side. A transformer provides an interface between the high voltage side and the low voltage side. The combined circuit comprises a buck and boost mode.
    Type: Application
    Filed: June 19, 2019
    Publication date: December 24, 2020
    Applicant: KARMA AUTOMOTIVE LLC
    Inventors: Lixin TANG, Geng NIU, Harshith KULAI
  • Publication number: 20200012070
    Abstract: Provided are a lens drive motor, a camera and a mobile terminal apparatus. The lens drive motor includes a housing, a lens support, a coil and a magnet component; the coil is wrapped around the lens support and is provided in the housing; the magnet component is provided between the housing and the lens support, wherein a portion, corresponding to the magnet component, of the housing is made of a first material, and other portions of the housing are made of a second material; and a magnetic conductivity of the second material is smaller than a magnetic conductivity of the first material. A problem of insufficient driving force of the lens drive motor in a related technology is solved by the present disclosure.
    Type: Application
    Filed: November 5, 2018
    Publication date: January 9, 2020
    Inventors: Jianhua WANG, Gaofeng GONG, Lixin TANG
  • Patent number: 10355952
    Abstract: Techniques described herein relate to automatic upstream service resumption after downstream system failure. An automatic resumption module may be configured to monitor a downstream endpoint (of a problematic downstream service provider) and determine when it again successfully can process requests by periodically processing inbound requests (e.g., from suspended upstream service providers) and automatically re-enabling upstream endpoints for the suspended upstream service providers in the case of success. The automatic resumption module may start a trickle feed timer for each upstream endpoint to allow messages to be processed at a configured retry rate while the upstream endpoint remains suspended. The trickle feed timer may be configured to start upon the triggering of a circuit breaker for the involved downstream service. When downstream endpoint invocation succeeds, the automatic resumption module can resume all upstream endpoints associated with the downstream endpoint.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: July 16, 2019
    Assignee: Oracle International Corporation
    Inventors: Aninda Sengupta, Steven Gene Wolfangel, Philippe Le Mouel, Dennis Fuglsang, Lixin Tang, Sherry Weng, Bo Stern
  • Patent number: 10157092
    Abstract: Techniques described herein relate to automatic system suspension based upon downstream system failure in service-oriented architecture (SOA) applications. A system management module of a SOA system may be configured to detect a problem with a downstream service provider involved with a SOA application, and in response, automatically suspend particular processing within the application to prevent requests that may end up at the downstream service provider from entering the SOA application. The system management module may implement a circuit breaker module that maintains a circuit breaker structure specific to a downstream endpoint leading to a downstream service provider. Upon a triggering of a circuit breaker for a downstream endpoint, one or more upstream service providers are identified as associated with faulted traffic causing the triggering, and the system management module can automatically cause further traffic from these upstream service providers to be suspended.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: December 18, 2018
    Assignee: Oracle International Corporation
    Inventors: Aninda Sengupta, Steven Gene Wolfangel, Philippe Le Mouel, Dennis Fuglsang, Lixin Tang, Sherry Weng, Bo Stern
  • Patent number: 9734539
    Abstract: The present invention provides a coordinated coil scheduling method of multiple production lines in cold rolling area in steel plant, comprising: acquiring the information about the candidate coils to be scheduled in each of the multiple production lines in cold rolling area; building a coordinated coil scheduling model of multiple lines; obtaining the initial coordinated coil schedule of multiple lines by using a heuristic algorithm; improving the initial coordinated coil schedule in real time; and sending the improved coordinated coil schedule to the ACS of each production line. In this method, besides different production technological requirements of each coil, the cohesion relationship of different production lines are taken into account to make material supply to each equipment reasonable, and the smooth production process of coils in each of the lines is guaranteed with the changeover minimized, such that the whole efficiency of the manufacturing process is improved.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 15, 2017
    Assignee: NORTHEASTERN UNIVERSITY
    Inventors: Lixin Tang, Yang Yang, Shengnan Zhao