Patents by Inventor Liming Ye

Liming Ye 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).

  • Gate drive apparatus for resonant converters
    Patent number: 10340807
    Abstract: A device comprises a gate drive bridge coupled between a bias voltage of a power converter and ground and a transformer connected to the gate drive bridge, wherein the transformer comprises a primary winding connected to two legs of the gate drive bridge respectively and a plurality of secondary windings configured to generate gate drive signals for low side switches, high side switches and secondary switches of the power converter.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 2, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Daoshen Chen, Heping Dai, Xujun Liu, Liming Ye, Dianbo Fu
  • Apparatus and efficiency point tracking method for high efficiency resonant converters
    Patent number: 10284097
    Abstract: A system comprises an input power stage coupled to a primary side of a transformer, an output power stage coupled to a secondary side of a transformer, a first common node capacitor and a common node resistor connected in series between a midpoint of the secondary side of the transformer and ground and a detector having an input connected to a common node of the first common node capacitor and the common node resistor, and an output connected to a control circuit, wherein the control circuit is configured to dynamically adjust a switching frequency of the system based upon an output of the detector.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: May 7, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Daoshen Chen, Heping Dai, Xujun Liu, Zhihua Liu, Liming Ye, Dianbo Fu, Ce Liu, Bing Cai
  • Fluid mixing valve
    Patent number: 10281935
    Abstract: In the disclosure a fluid mixing valve for mixing a first fluid and a second fluid is provided, comprising: a housing; a balance valve module for balancing pressure between the first fluid and the second fluid, comprising a first fluid inlet, a second fluid inlet, a first fluid outlet in fluid communication with the first fluid inlet, and a second fluid outlet in fluid communication with the second fluid inlet; an adjustable valve module disposed on the balance valve module, comprising an inner casing member, flow-rate adjustment seat secured to the inner casing member, and a temperature adjustment shaft received in the inner casing member; and a mixed fluid discharging passage.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: May 7, 2019
    Assignee: XIAMEN LOTA INTERNATIONAL CO., LTD
    Inventors: Liming Ye, Jianping Zhou, Junhao Xu, Shuanglin Bai
  • Control Method for Buck-Boost Power Converters
    Publication number: 20190123650
    Abstract: A method includes generating a first ramp signal for controlling a first portion of a converter, generating a second ramp signal for controlling a second portion of the converter, controlling a state of a first switch of the first portion through comparing the first ramp signal to a control signal and a state of a first switch of the second portion through comparing the second ramp signal to the control signal and determining a switching cycle of the converter through comparing a current flowing through an inductor of the converter to a threshold.
    Type: Application
    Filed: December 7, 2018
    Publication date: April 25, 2019
    Inventors: Liming Ye, Jinbo Huang, Heping Dai, Dianbo Fu, Daoshen Chen
  • Pull-out faucet with magnetic docking system
    Patent number: 10260216
    Abstract: A pull-down faucet includes a spout and a water hose movable within the spout. A spray hose connector is attached to the discharge end of the water hose. A sprayhead is in fluid communication with the spray hose connector and the water hose, and is movable between a docked position adjacent the discharge end of the spout, to an undocked position away from the spout. A magnet is secured to the interior of the spray hose connector, and a metallic element is secured near the discharge end of the spout.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: April 16, 2019
    Assignee: XIAMEN LOTA INTERNATIONAL CO., LTD.
    Inventors: Chuanbao Zhu, Liming Ye, Jianping Zhou, Bentai Chen
  • Apparatus and Efficiency Point Tracking Method for High Efficiency Resonant Converters
    Publication number: 20190074774
    Abstract: A system comprises an input power stage coupled to a primary side of a transformer, an output power stage coupled to a secondary side of a transformer, a first common node capacitor and a common node resistor connected in series between a midpoint of the secondary side of the transformer and ground and a detector having an input connected to a common node of the first common node capacitor and the common node resistor, and an output connected to a control circuit, wherein the control circuit is configured to dynamically adjust a switching frequency of the system based upon an output of the detector.
    Type: Application
    Filed: October 29, 2018
    Publication date: March 7, 2019
    Inventors: Daoshen Chen, Heping Dai, Xujun Liu, Zhihua Liu, Liming Ye, Dianbo Fu, Ce Liu, Bing Cai
  • Auxiliary Power Supply Apparatus and Method
    Publication number: 20190044449
    Abstract: An apparatus includes a pulse-width modulation (PWM) generator configured to generate a PWM signal for controlling a power switch of a power converter, a bias switch and a bias capacitor connected in series and coupled to a magnetic winding of the power converter and a comparator having a first input connected to the bias capacitor, a second input connected to a predetermined reference and an output configured to generate a signal for controlling the bias switch to allow a magnetizing current from the magnetic winding to charge the bias capacitor when a voltage across the bias capacitor is less than the predetermined reference.
    Type: Application
    Filed: November 21, 2017
    Publication date: February 7, 2019
    Inventors: Yushan Li, Liming Ye, Heping Dai
  • PULL-OUT FAUCET WITH MAGNETIC DOCKING SYSTEM
    Publication number: 20190040611
    Abstract: A pull-down faucet includes a spout and a water hose movable within the spout. A spray hose connector is attached to the discharge end of the water hose. A sprayhead is in fluid communication with the spray hose connector and the water hose, and is movable between a docked position adjacent the discharge end of the spout, to an undocked position away from the spout. A magnet is secured to the interior of the spray hose connector, and a metallic element is secured near the discharge end of the spout.
    Type: Application
    Filed: August 28, 2017
    Publication date: February 7, 2019
    Inventors: Chuanbao Zhu, Liming Ye, Jianping Zhou, Bentai Chen
  • Isolated partial power processing power converters
    Patent number: 10199947
    Abstract: In an Input-Series-Output-Parallel (ISOP)-type power converter circuit, a DC-to-DC converter has a positive input coupled to a DC power source and a negative input connected to a negative output. A plurality of capacitors are coupled in series between a positive output of the converter and a circuit ground, the negative output of the converter coupled to a common node of first and second capacitors. A half-bridge inverter network is coupled between the positive output and a circuit ground, each inverter having an input respectively coupled to the first capacitor and the second capacitor. A plurality of resonant tanks are coupled to an output of a respective one of first and second half-bridge inverters. A transformer is coupled to outputs of the plurality of resonant tanks. A rectifier circuit is coupled to a secondary winding of the transformer to provide a DC output voltage.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: February 5, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Ye, Heping Dai, Dianbo Fu
  • Control method for buck-boost power converters
    Patent number: 10177661
    Abstract: A method comprises generating a first ramp signal and a second ramp signal for controlling a buck converter portion and a boost converter portion of a buck-boost converter respectively, comparing the first ramp signal and the second ramp signal to a control signal, controlling the buck converter portion using the comparing the first ramp signal to the control signal and the boost converter portion using the comparing the second ramp signal to the control signal, comparing a current flowing through the inductor to a current threshold and terminating a switching cycle based upon the comparing the current flowing through the inductor to the current threshold.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: January 8, 2019
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Ye, Jinbo Huang, Heping Dai, Dianbo Fu, Daoshen Chen
  • Isolated partial power converter
    Patent number: 10164544
    Abstract: An Input-Series-Output-Parallel (ISOP)-type partial power converter circuit comprises: an isolated, unregulated DC-to-DC converter configured to generate a first output voltage at a first output voltage node; and a regulated DC-to-DC converter coupled with the unregulated DC-to-DC converter and configured to generate a second output voltage at a second output voltage node, the regulated DC-to-DC converter comprising a resonant forward-flyback converter configuration; wherein the first output voltage node is coupled in parallel with the second output voltage node.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: December 25, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Ye, Heping Dai, Dianbo Fu
  • AC/DC converters with wider voltage regulation range
    Patent number: 10135350
    Abstract: A converter is provided. The converter includes a first DC/DC converter, a non-isolated DC/DC converter and a control circuit. The first DC/DC converter includes a transformer, a primary side inverter and a secondary side rectifier. The primary side inverter and a secondary side rectifier are operable at multiple operating modes. The control circuit determines an operating mode for the primary side inverter or the secondary side rectifier, and controls the primary side inverter or the secondary side rectifier to change its respective operating mode.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: November 20, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Ye, Heping Dai, Dianbo Fu
  • SHOWER CONTROLLING DEVICE AND SHOWER DEVICE
    Publication number: 20180313066
    Abstract: The present disclosure relates to a shower device and a shower controlling device. The shower controlling device comprises: a tube structure having a first inlet tube, a second inlet tube and an outlet tube; a mixing valve having mixing chamber which is in fluid communication with the outlet tube and is maintained to be in fluid communication with at least one of the first inlet tube and second inlet tube; a switching valve which is spaced apart from the mixing valve and is suitable for controlling the switching on/off of the outlet tube; a mounting disc provided to be spaced apart from the tube structure; and a transferring and adjusting mechanism which is mounted between the switching valve and the mounting disc in such a manner that the length of the mechanism is adjustable, and is able to operate the switching valve under an external force.
    Type: Application
    Filed: January 31, 2018
    Publication date: November 1, 2018
    Inventors: Liming Ye, Jianping Zhou, Shuanglin Bai, Lucheng Wang
  • Apparatus and efficiency point tracking method for high efficiency resonant converters
    Patent number: 10116219
    Abstract: A method comprises connecting a first resonant converter and a second resonant converter in parallel, detecting a first signal indicating a first soft switching process of the first resonant converter and a second signal indicating a second soft switching process of the second resonant converter and adjusting a first switching frequency of the first resonant converter by a first control circuit and a second switching frequency of the second resonant converter by a second control circuit until a load current flowing through the first resonant converter is substantially equal to a load current flowing through the second resonant converter.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: October 30, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Daoshen Chen, Heping Dai, Xujun Liu, Zhihua Liu, Liming Ye, Dianbo Fu, Ce Liu, Bing Cai
  • ISOLATED PARTIAL POWER PROCESSING POWER CONVERTERS
    Publication number: 20180294732
    Abstract: In an Input-Series-Output-Parallel (ISOP)-type power converter circuit, a DC-to-DC converter has a positive input coupled to a DC power source and a negative input connected to a negative output. A plurality of capacitors are coupled in series between a positive output of the converter and a circuit ground, the negative output of the converter coupled to a common node of first and second capacitors. A half-bridge inverter network is coupled between the positive output and a circuit ground, each inverter having an input respectively coupled to the first capacitor and the second capacitor. A plurality of resonant tanks are coupled to an output of a respective one of first and second half-bridge inverters. A transformer is coupled to outputs of the plurality of resonant tanks. A rectifier circuit is coupled to a secondary winding of the transformer to provide a DC output voltage.
    Type: Application
    Filed: April 5, 2017
    Publication date: October 11, 2018
    Inventors: Liming Ye, Heping Dai, Dianbo Fu
  • Three-level voltage bus apparatus and method
    Patent number: 10097109
    Abstract: An apparatus includes a first switch and a first capacitor connected in series between a first voltage bus and a second voltage bus, a second capacitor and a second switch connected in series between the first voltage bus and the second voltage bus and a diode coupled between a common node of the first switch and the first capacitor, and a common node of the second capacitor and the second switch.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: October 9, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Ye, Heping Dai
  • MIXING VALVE
    Publication number: 20180259082
    Abstract: In the present invention a mixing valve is provided, comprising a valve seat provided with first and second fluid conduits and a mixed fluid conduit and including a first plug-fit portion and a first mounting portion, and a valve core defining first and second stop surfaces. The valve core comprises a valve housing provided with a second plug-fit portion configured to be mated with the first plug-fit portion, a valve shaft disposed within the valve housing and provided with a valve plate comprising a first regulating aperture and a second regulating aperture, a stop member mounted on the valve shaft, the valve core defining an initial position in which the stop member engages with the first stop surface and a final position in which the stop member engages with the second stop surface, and a valve module.
    Type: Application
    Filed: May 16, 2018
    Publication date: September 13, 2018
    Inventors: Liming YE, Jianping ZHOU, Shuanglin BAI, Lucheng WANG
  • DISTRIBUTED/CENTRAL OPTIMIZER ARCHITECTURE
    Publication number: 20180233614
    Abstract: The disclosure relates to technology for providing power, voltage, and/or current from a combination of photovoltaic modules. In one aspect, a system has central power optimizer, which is located between a group of distributed power optimizers and a solar inverter. Each distributed power optimizer may be connected to the DC output of one photovoltaic modules, and may be used to regulate the power output of the photovoltaic module. The combined DC voltages of the distributed power optimizers may be provided to the input of the central power optimizer.
    Type: Application
    Filed: July 14, 2017
    Publication date: August 16, 2018
    Applicant: Futurewei Technologies, Inc.
    Inventors: Heping Dai, Liming Ye, Dianbo Fu, Xiaolin Mao
  • AC/DC CONVERTERS WITH WIDER VOLTAGE REGULATION RANGE
    Publication number: 20180234022
    Abstract: A converter is provided. The converter includes a first DC/DC converter, a non-isolated DC/DC converter and a control circuit. The first DC/DC converter includes a transformer, a primary side inverter and a secondary side rectifier. The primary side inverter and a secondary side rectifier are operable at multiple operating modes. The control circuit determines an operating mode for the primary side inverter or the secondary side rectifier, and controls the primary side inverter or the secondary side rectifier to change its respective operating mode.
    Type: Application
    Filed: April 16, 2018
    Publication date: August 16, 2018
    Inventors: Liming Ye, Heping Dai, Dianbo Fu
  • ISOLATED PARTIAL POWER CONVERTER
    Publication number: 20180183347
    Abstract: An Input-Series-Output-Parallel (ISOP)-type partial power converter circuit comprises: an isolated, unregulated DC-to-DC converter configured to generate a first output voltage at a first output voltage node; and a regulated DC-to-DC converter coupled with the unregulated DC-to-DC converter and configured to generate a second output voltage at a second output voltage node, the regulated DC-to-DC converter comprising a resonant forward-flyback converter configuration; wherein the first output voltage node is coupled in parallel with the second output voltage node.
    Type: Application
    Filed: June 28, 2017
    Publication date: June 28, 2018
    Inventors: Liming Ye, Heping Dai, Dianbo Fu