Patents by Inventor Yushan Li
Yushan Li 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: 11848603Abstract: An apparatus includes a controller configured to generate a PWM signal for controlling a power switch of a forward converter, a bias switch and a bias capacitor connected in series and coupled to a bias winding of the forward 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 bias winding to charge the bias capacitor when a voltage across the bias capacitor is less than the predetermined reference.Type: GrantFiled: December 12, 2022Date of Patent: December 19, 2023Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Yushan Li, Liming Ye, Heping Dai
-
Patent number: 11801837Abstract: The present disclosure relates to the technical field of vehicles, and particularly to a vehicle control method and apparatus, a storage medium and a vehicle. The method includes: acquiring a pressure of a brake master cylinder and an opening degree of an accelerator pedal; when the pressure of the brake master cylinder is greater than a first preset pressure threshold, the opening degree of the accelerator pedal is no less than a first preset opening degree threshold, and a moment when the pressure of the brake master cylinder is greater than the first preset pressure threshold is earlier than a moment when the opening degree of the accelerator pedal is no less than the first preset opening degree threshold, controlling the vehicle to enter an activated state of a launch starting function; and when the vehicle is in the activated state, controlling an engine of the vehicle to output a target torque.Type: GrantFiled: March 30, 2021Date of Patent: October 31, 2023Assignee: GREAT WALL MOTOR COMPANY LIMITEDInventors: Yinlei Wang, Wei Pan, Tengfei Guo, Yushan Li, Xiu Liu, Weifeng Deng
-
Patent number: 11791627Abstract: An ESD protection circuit is provided, including a negative ESD protection module and a positive ESD protection module, where the negative ESD protection module includes a first resistor, a charging capacitor, a first field effect transistor, and a second field effect transistor, and the positive ESD protection module includes a fourth field effect transistor. When a negative ESD event occurs, there is a comparatively large transient voltage at a gate of a P-type enhanced GaN power device relative to a source of the P-type enhanced GaN power device. Therefore, a displacement current from the source to the gate of the P-type enhanced GaN power device is generated on the charging capacitor. A voltage drop generated by the displacement current on the first resistor may enable the first field effect transistor and the second field effect transistor to form a path when the first field effect transistor is turned on.Type: GrantFiled: July 12, 2022Date of Patent: October 17, 2023Assignee: Huawei Technologies Co., Ltd.Inventors: Qimeng Jiang, Yushan Li, Hanxing Wang
-
Patent number: 11784577Abstract: A system includes a current-mode switcher configured to provide a direct current (DC) voltage for a noise sensitive load, and a linear amplifier connected to an output of the current-mode switcher, the linear amplifier configured to draw a reduced supply voltage through at least one power conversion device that is coupled between a power source and the linear amplifier.Type: GrantFiled: July 10, 2020Date of Patent: October 10, 2023Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Yushan Li, Heping Dai, Dianbo Fu
-
Patent number: 11664726Abstract: A method includes configuring a switched capacitor converter to operate in a switching mode and configuring the switched capacitor converter to enter into a bypass mode after applying a charging mode to the switched capacitor converter, wherein as a result of applying the charging mode, the switched capacitor converter has a smooth transition from the switching mode to the bypass mode.Type: GrantFiled: September 13, 2021Date of Patent: May 30, 2023Assignee: Huawei Digital Power Technologies Co., Ltd.Inventor: Yushan Li
-
Publication number: 20230133307Abstract: An apparatus includes a controller configured to generate a PWM signal for controlling a power switch of a forward converter, a bias switch and a bias capacitor connected in series and coupled to a bias winding of the forward 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 bias winding to charge the bias capacitor when a voltage across the bias capacitor is less than the predetermined reference.Type: ApplicationFiled: December 12, 2022Publication date: May 4, 2023Inventors: Yushan Li, Liming Ye, Heping Dai
-
ENVIRONMENT TEMPERATURE DETERMINATION METHOD, MOTOR CONTROL UNIT, CONTROL SYSTEM, AND STORAGE MEDIUM
Publication number: 20230052138Abstract: A motor control unit, a control system, and a storage medium.Type: ApplicationFiled: April 8, 2021Publication date: February 16, 2023Inventors: Zhe JIANG, Xinran DONG, Fuqiang XU, Yushan LI -
Publication number: 20230041744Abstract: A method for controlling heating of a battery pack is provided, in which, the method includes: acquiring a temperature of the battery pack; and controlling a motor controller to output a current to a motor, if the temperature of the battery pack is lower than a preset temperature threshold, so as to generate a magnetic field in the motor having a magnetic pole direction consistent with or opposite to a magnetic pole direction of a motor rotor and to enable the motor to maintain a stationary state.Type: ApplicationFiled: April 22, 2021Publication date: February 9, 2023Inventors: Liang XIONG, Zhe JIANG, Yongluan ZHANG, Xinran DONG, Guowei SONG, Meng LIU, Pingyuan LUO, Yushan LI, Zelin GAO, Yadong WANG
-
Publication number: 20230037049Abstract: The present disclosure relates to the technical field of vehicles, and particularly to a vehicle control method and apparatus, a storage medium and a vehicle. The method includes: acquiring a pressure of a brake master cylinder and an opening degree of an accelerator pedal; when the pressure of the brake master cylinder is greater than a first preset pressure threshold, the opening degree of the accelerator pedal is no less than a first preset opening degree threshold, and a moment when the pressure of the brake master cylinder is greater than the first preset pressure threshold is earlier than a moment when the opening degree of the accelerator pedal is no less than the first preset opening degree threshold, controlling the vehicle to enter an activated state of a launch starting function; and when the vehicle is in the activated state, controlling an engine of the vehicle to output a target torque.Type: ApplicationFiled: March 30, 2021Publication date: February 2, 2023Inventors: Yinlei WANG, Wei PAN, Tengfei GUO, Yushan LI, Xiu LIU, Weifeng DENG
-
Publication number: 20230006440Abstract: An ESD protection circuit is provided, including a negative ESD protection module and a positive ESD protection module, where the negative ESD protection module includes a first resistor, a charging capacitor, a first field effect transistor, and a second field effect transistor, and the positive ESD protection module includes a fourth field effect transistor. When a negative ESD event occurs, there is a comparatively large transient voltage at a gate of a P-type enhanced GaN power device relative to a source of the P-type enhanced GaN power device. Therefore, a displacement current from the source to the gate of the P-type enhanced GaN power device is generated on the charging capacitor. A voltage drop generated by the displacement current on the first resistor may enable the first field effect transistor and the second field effect transistor to form a path when the first field effect transistor is turned on.Type: ApplicationFiled: July 12, 2022Publication date: January 5, 2023Inventors: Qimeng JIANG, Yushan LI, Hanxing WANG
-
Patent number: 11527960Abstract: 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: GrantFiled: May 4, 2020Date of Patent: December 13, 2022Assignee: Huawei Digital Power Technologies Co., Ltd.Inventors: Yushan Li, Liming Ye, Heping Dai
-
Publication number: 20220345025Abstract: A switching frequency dithering method, a switching circuit and a DC-DC converter. A switching frequency in the switching frequency dithering method dithers up and down at a third switching frequency or between randomly generated target switching frequencies. The embodiments further provide a switching circuit and a DC-DC converter, which can be used to control a clock signal and optimize comprehensive system performance such as improving system efficiency, reducing noise and ripple, suppressing switching harmonics, and reducing electromagnetic radiation.Type: ApplicationFiled: July 6, 2020Publication date: October 27, 2022Applicant: Wiz Semiconductor IncorporatedInventor: Yushan LI
-
Publication number: 20220329152Abstract: A DC-DC converter, where a first terminal of the first-phase charge pump conversion branch and a first terminal of the second-phase charge pump conversion branch are respectively connected to an output terminal of the power input circuit, a second terminal of the first-phase charge pump conversion branch and a second terminal of the second-phase charge pump conversion branch are respectively connected to an input terminal of the power output circuit, the first-phase charge pump conversion branch and the second-phase charge pump conversion branch are respectively connected to the control circuit and are separately controlled by the control circuit, and the control circuit generates control signals of the first-phase charge pump conversion branch and the second-phase charge pump conversion branch based on feedback signals output by the converter. This converter can provide higher voltage conversion efficiency and implement flexible operating mode switching.Type: ApplicationFiled: March 10, 2020Publication date: October 13, 2022Applicant: Wiz Semiconductor IncorporatedInventor: Yushan LI
-
Patent number: 11411396Abstract: An ESD protection circuit is provided, including a negative ESD protection module and a positive ESD protection module, where the negative ESD protection module includes a first resistor, a charging capacitor, a first field effect transistor, and a second field effect transistor, and the positive ESD protection module includes a fourth field effect transistor. When a negative ESD event occurs, there is a comparatively large transient voltage at a gate of a P-type enhanced GaN power device relative to a source of the P-type enhanced GaN power device. Therefore, a displacement current from the source to the gate of the P-type enhanced GaN power device is generated on the charging capacitor. A voltage drop generated by the displacement current on the first resistor may enable the first field effect transistor and the second field effect transistor to form a path when the first field effect transistor is turned on.Type: GrantFiled: March 24, 2021Date of Patent: August 9, 2022Assignee: Huawei Technologies Co., Ltd.Inventors: Qimeng Jiang, Yushan Li, Hanxing Wang
-
Publication number: 20210408901Abstract: A method includes configuring a switched capacitor converter to operate in a switching mode and configuring the switched capacitor converter to enter into a bypass mode after applying a charging mode to the switched capacitor converter, wherein as a result of applying the charging mode, the switched capacitor converter has a smooth transition from the switching mode to the bypass mode.Type: ApplicationFiled: September 13, 2021Publication date: December 30, 2021Inventor: Yushan Li
-
Patent number: 11091510Abstract: The present invention provides the preparation processes for several crystal forms of the compound 17beta-Neriifolin (17bNF) and use thereof in anti-tumor applications. The present invention provides preparation processes for four kinds of non-solvated crystal forms, amorphous powders and eleven kinds of solvated crystalline solids, including ethanol-solvated ones, of 17bNF that are not present in nature, and the identification and characterization of these crystal forms by crystallographic research methods such as X-ray powder diffraction. In addition, through vivo anti-tumor experiments with five of the crystal forms in nude mice, we provide anti-tumor and anti-cancer applications of the crystal forms of 17bNF.Type: GrantFiled: November 19, 2019Date of Patent: August 17, 2021Assignees: ENKANG PHARMACEUTICALS (GUANGZHOU), LTD., ENZHI (GUANGZHOU) PHARMACEUTICALS LIMITED, ENZYNOMICS (H.K.) LIMITED, FOSHAN INTELGEN PHARMACEUTICAL CO. LTD.Inventors: Chun Liang, Haibin Liu, Zeming Zhang, Guoqiang Song, Yushan Li, Weiqiang Zhang
-
Publication number: 20210210955Abstract: An ESD protection circuit is provided, including a negative ESD protection module and a positive ESD protection module, where the negative ESD protection module includes a first resistor, a charging capacitor, a first field effect transistor, and a second field effect transistor, and the positive ESD protection module includes a fourth field effect transistor. When a negative ESD event occurs, there is a comparatively large transient voltage at a gate of a P-type enhanced GaN power device relative to a source of the P-type enhanced GaN power device. Therefore, a displacement current from the source to the gate of the P-type enhanced GaN power device is generated on the charging capacitor. A voltage drop generated by the displacement current on the first resistor may enable the first field effect transistor and the second field effect transistor to form a path when the first field effect transistor is turned on.Type: ApplicationFiled: March 24, 2021Publication date: July 8, 2021Inventors: Qimeng JIANG, Yushan LI, Hanxing WANG
-
Publication number: 20210091679Abstract: A system includes a current-mode switcher configured to provide a direct current (DC) voltage for a noise sensitive load, and a linear amplifier connected to an output of the current-mode switcher, the linear amplifier configured to draw a reduced supply voltage through at least one power conversion device that is coupled between a power source and the linear amplifier.Type: ApplicationFiled: July 10, 2020Publication date: March 25, 2021Inventors: Yushan Li, Heping Dai, Dianbo Fu
-
Publication number: 20200266720Abstract: 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: ApplicationFiled: May 4, 2020Publication date: August 20, 2020Inventors: Yushan Li, Liming Ye, Heping Dai
-
Publication number: 20200157139Abstract: The present invention provides the preparation processes for several crystal forms of the compound 17beta-Neriifolin (17bNF) and use thereof in anti-tumor applications. The present invention provides preparation processes for four kinds of non-solvated crystal forms, amorphous powders and eleven kinds of solvated crystalline solids, including ethanol-solvated ones, of 17bNF that are not present in nature, and the identification and characterization of these crystal forms by crystallographic research methods such as X-ray powder diffraction. In addition, through vivo anti-tumor experiments with five of the crystal forms in nude mice, we provide anti-tumor and anti-cancer applications of the crystal forms of 17bNF.Type: ApplicationFiled: November 19, 2019Publication date: May 21, 2020Applicants: ENZHI (GUANGZHOU) PHARMACEUTICALS LIMITED, ENZYNOMICS (H.K.) LIMITED, FOSHAN INTELGEN PHARMACEUTICAL CO. LTD.Inventors: Chun LIANG, Haibin LIU, Zeming ZHANG, Guoqiang SONG, Yushan LI, Weiqiang ZHANG