Patents by Inventor Shun Yao
Shun Yao 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).
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Patent number: 11848604Abstract: A single-stage AC-DC converter circuit with a power factor correction function. The single-stage AC-DC converter circuit comprises a primary-side AC-DC converter, a transformer, a secondary-side AC-DC converter and a controller which are connected to each other. The primary-side AC-DC converter is configured to convert an AC power source into DC. The secondary-side AC-DC converter is configured to convert electrical energy into DC and supply power to a load. The controller is configured to control duty ratios of power switches in the primary-side and secondary-side AC-DC converters, and a phase difference between control signals for the power switches, and finally control the amount of electrical energy transfer and correct a power factor. The single-stage AC-DC converter circuit of the present invention reduces the capacity and volume of a filter inductor and a voltage stabilizing capacitor, and has the advantages of simple circuit and low cost.Type: GrantFiled: May 17, 2021Date of Patent: December 19, 2023Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.Inventors: Jun Liu, Yingying Feng, Shun Yao, Jinzhu Xu
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Publication number: 20230374242Abstract: Provided are a dielectric material and a method for manufacturing the same. The dielectric material includes: subjecting a foamed sphere obtained by a primary foaming to a second foaming in a second moulding chamber filled with CO2 at a second temperature in the range of 20° C. below Tm to 5° C. below Tm and under a second pressure of 15-20 MPa for 30-3600 min to obtain the dielectric material, wherein the primary foaming comprises specific steps of: foaming a foaming material sphere with a diameter of 20-800 mm in a first moulding chamber filled with CO2 at a first temperature in the range of 80° C. below Tm to 20° C. below Tm and under a first pressure of 15-20 MPa to obtain the foamed sphere. Further provided is a dielectric material manufactured by the method above.Type: ApplicationFiled: March 23, 2022Publication date: November 23, 2023Inventors: Ling ZHAO, Yichong CHEN, Tao LIU, Shun YAO, Yijie LING, Zhimei XU, Dongdong HU
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Patent number: 11691532Abstract: The present invention discloses an on-board integrated charging device and a current distribution calculating method thereof. The on-board integrated charging device comprises a voltage conversion module. The voltage conversion module is provided with an AC terminal connected to an alternating current or an alternating current load, an HV terminal connected to a power battery and an LV terminal connected to a direct current load. When the AC terminal is idle, the LV terminal is powered by the HV terminal, and an input current of the LV terminal is an actual current of the HV terminal. According to the on-board integrated charging device, OBC, DCAC and DCDC functions can be integrated on the same circuit board, a current reporting requirement can be realized through a distribution algorithm, and the volume and weight of the whole device can be reduced.Type: GrantFiled: May 17, 2021Date of Patent: July 4, 2023Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.Inventors: Jun Liu, Yingying Feng, Shun Yao, Biwei Zheng
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Publication number: 20230185280Abstract: An integrated circuit (IC) configurable to perform adaptive thermal ceiling control in a per-functional-block manner, an associated main circuit, an associated electronic device and an associated thermal control method are provided. The IC may include a plurality of hardware circuits arranged to perform operations of a first functional block, and at least one thermal control circuit. At least one temperature sensor is coupled with the first functional block to detect temperature and to generate at least one temperature sensing result of the first functional block.Type: ApplicationFiled: November 23, 2022Publication date: June 15, 2023Applicant: MEDIATEK INC.Inventors: Chih-Fu Tsai, Yu-Chia Chang, Bo-Jiun Yang, Yen-Hwei Hsieh, Shun-Yao Yang, Jia-Wei Fang, Ta-Chang Liao, Tai-Yu Chen
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Patent number: 11664723Abstract: A single-phase and three-phase compatible conversion circuit includes an EMC module, a PFC module, a switch K1 and a control module. The EMC module is connected between lines A, B, C and N of a power grid and the PFC module. Three lines A1, B1 and C1 are led out from the EMC module and are connected with the PFC module, and are respectively connected to a set virtual midpoint through capacitors CX1, CX2, and CX3. The virtual midpoint is connected to a bus midpoint of the PFC module through the switch K1. The control module is used for detecting a power grid input signal and controlling the state of the switch K1 according to the type of the power grid input signal. The common-mode noise of the three-phase conversion mode can be reduced, and the three-phase conversion mode can be controlled within a larger bus voltage regulation range.Type: GrantFiled: March 11, 2021Date of Patent: May 30, 2023Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.Inventors: Jun Liu, Yingying Feng, Shun Yao, Renwei Feng
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Patent number: 11616451Abstract: A pre-chargeable DCDC conversion circuit includes a high-voltage side conversion module connected to a primary winding of a main transformer T1, a low-voltage side conversion module connected to a secondary winding of the main transformer, and a controller used for controlling the high-voltage side conversion module and the low-voltage side conversion module. A pre-charging module is connected in series in a direct-current bus of the low-voltage side conversion module, and the pre-charging module is used for pre-charging a capacitor of electric equipment connected to a direct-current bus of the high-voltage side conversion module when the complete machine is powered on. The pre-charging module and a forward DCDC share most of power devices and power loops, and only a small number of devices are added, such that the volume and cost are reduced compared with an independent pre-charging branch, and the control mode is simple.Type: GrantFiled: March 17, 2021Date of Patent: March 28, 2023Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.Inventors: Jun Liu, Yingying Feng, Shun Yao, Changsheng Zhang
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Publication number: 20230091718Abstract: The present invention discloses a two-output charging circuit and a method for controlling its auxiliary circuit switch. The two-output charging circuit includes two first-stage switch transistors in the half-bridge inverter circuit generating dead time at changing-over and turn-on, and the second-stage switch transistor being turned off within the dead time. In the present invention, making use of a magnetic core to return from the reverse in its bidirectional magnetization process generates dead time, and controlling the time sequence of the switch device of the post-circuit in the dead time abates the voltage stress of the synchronous rectifier diode and reduces the loss of the absorption circuit of the synchronous rectifier circuit.Type: ApplicationFiled: November 23, 2022Publication date: March 23, 2023Inventors: Jun LIU, Yingying FENG, Shun YAO, Jinzhu XU, Yuanzhao ZHANG
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Publication number: 20230088663Abstract: The present invention discloses a charging power supply circuit and a control method thereof, the charging power supply circuit includes a PFC circuit, a driver module, and a high-voltage output circuit and a low-voltage output circuit both connected to said PFC circuit, wherein the PFC circuit is connected to AC mains, and the drive module is used to set the operation range of said PFC circuit to the range near the zero point of AC input voltage. Using the technical solution of the present invention can achieve keeping the topology on the demand for isolation and reduce the volume and cost of PFC circuits.Type: ApplicationFiled: November 23, 2022Publication date: March 23, 2023Inventors: Jun LIU, Yingying FENG, Shun YAO, Jinzhu XU, Yuanzhao ZHANG
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Publication number: 20230076710Abstract: An antenna for receiving wireless power from a transmitter is provided. The antenna includes multiple antenna elements, coupled to an electronic device, configured to receive radio-frequency (RF) power waves from the transmitter, each antenna element being adjacent to at least one other antenna element. Furthermore, the multiple antenna elements are arranged so that an efficiency of reception of the RF power waves by the antenna elements remains above a predetermined threshold efficiency when a human hand is in contact with the electronic device, the predetermined threshold efficiency being at least 50%. Lastly, at least one antenna element is coupled to conversion circuitry, which is configured to (i) convert energy from the received RF power waves into usable power and (ii) provide the usable power to the electronic device for powering or charging of the electronic device.Type: ApplicationFiled: September 6, 2022Publication date: March 9, 2023Inventors: Anna Papio-Toda, Shun Yao, Chryssoula Kyriazidou, Seiran Khaledian
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Publication number: 20220300324Abstract: A multi-processor system performs thermal-aware task scheduling and task migration. Based on temperature measurements, the system determines one or more thermal conditions of each processor. The thermal conditions include a present temperature, a historical temperature, a predicted temperature, and thermal headroom of the processor. A scheduler identifies a target processor among the processors based on, at least in part, the one or more thermal conditions of each processor, and assigns a task to be executed by the target processor. For task migration, the system detects that a source processor satisfies a task migration criterion by comparing one or more of the thermal conditions of the source processor with corresponding thresholds. The scheduler identifies a target processor based on, at least in part, one or more of the thermal conditions of each processor, and migrates a task from the source processor to the target processor for execution.Type: ApplicationFiled: November 11, 2021Publication date: September 22, 2022Inventors: Ya-Ting Chang, Chih Fu Tsai, Tai Yu Chen, Jia-Ming Chen, Shun-Yao Yang, Ta-Chang Liao, Shengquan Wu, Yu-Chia Chang
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Patent number: 11437735Abstract: An antenna for receiving wireless power from a transmitter is provided. The antenna includes multiple antenna elements, coupled to an electronic device, configured to receive radio-frequency (RF) power waves from the transmitter, each antenna element being adjacent to at least one other antenna element. Furthermore, the multiple antenna elements are arranged so that an efficiency of reception of the RF power waves by the antenna elements remains above a predetermined threshold efficiency when a human hand is in contact with the electronic device, the predetermined threshold efficiency being at least 50%. Lastly, at least one antenna element is coupled to conversion circuitry, which is configured to (i) convert energy from the received RF power waves into usable power and (ii) provide the usable power to the electronic device for powering or charging of the electronic device.Type: GrantFiled: November 13, 2019Date of Patent: September 6, 2022Assignee: Energous CorporationInventors: Anna Papio-Toda, Shun Yao, Chryssoula Kyriazidou, Seiran Khaledian
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Patent number: 11329571Abstract: A magnetic balance circuit of a bidirectional resonant converter and a control method thereof are provided. The magnetic balance circuit includes a primary conversion circuit, a transformer, a secondary conversion circuit, and a controller. Said primary conversion circuit is connected to a primary winding of said transformer through a first capacitor, a current transformer is set between the secondary winding of said transformer and said secondary conversion circuit. According to the positive component of the current in the cavity of the secondary conversion circuit and the negative component of the current in the cavity of the secondary conversion circuit, said controller further controls the duty ratios of the switches in the secondary conversion circuit. In the invention, the magnetic deviation phenomenon on both sides of the bidirectional resonant converter is effectively eliminated to achieve balance control for the magnetic circuit, thereby avoiding saturation.Type: GrantFiled: March 31, 2021Date of Patent: May 10, 2022Assignee: Shenzhen Vmax New Energy Co., Ltd.Inventors: Yingying Feng, Shun Yao, Jinzhu Xu, Hua Ao
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Publication number: 20220140740Abstract: A magnetic balance circuit of a bidirectional resonant converter and a control method thereof are provided. The magnetic balance circuit includes a primary conversion circuit, a transformer, a secondary conversion circuit, and a controller. Said primary conversion circuit is connected to a primary winding W1 of said transformer through a first capacitor C1, a current transformer CT is set between the secondary winding of said transformer and said secondary conversion circuit. According to the positive component Ipositive of the current in the cavity of the secondary conversion circuit and the negative component Inegative of the current in the cavity of the secondary conversion circuit, said controller further controls the duty ratios of the switches in the secondary conversion circuit. In the invention, the magnetic deviation phenomenon on both sides of the bidirectional resonant converter is effectively eliminated to achieve balance control for the magnetic circuit, thereby avoiding saturation.Type: ApplicationFiled: March 31, 2021Publication date: May 5, 2022Inventors: Yingying FENG, Shun YAO, Jinzhu XU, Hua AO
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Publication number: 20220099471Abstract: A device for transferring liquids and liquid samples in certain quantities includes a first housing, a second housing, and a liquid extraction assembly. The first housing includes a first sidewall, a first top wall, an extrusion portion, and a first receiving cavity. The extrusion portion is disposed in the first receiving cavity. The second housing includes a second sidewall, a second top wall, and a second receiving cavity. The first housing is received in the second receiving cavity. The liquid extraction assembly includes a liquid extraction pipe and a liquid extraction head. By thumb or finger pressure, the first housing can be moved into the second receiving cavity to compress the extrusion portion to cause release of a sample, or released to gather a sample.Type: ApplicationFiled: September 29, 2021Publication date: March 31, 2022Inventors: SHUN-YAO CHENG, JE-WEI CHIANG, YU-SHENG CHANG, YU-MIN WANG, CHIA-HUA TSAI, CHUAN-CI HUANG
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Publication number: 20220097040Abstract: A device for transferring liquids and liquid samples in certain quantities includes a pressing unit and a liquid extraction assembly. The pressing unit includes a first housing and a second housing. The first housing includes a first sidewall, a first top wall, and an extrusion portion. The second housing includes a second sidewall, a second top wall, and a receiving cavity. The first housing is received in the receiving cavity. The liquid extraction assembly includes a liquid extraction pipe, a liquid extraction head, and a first connecting portion. The first housing is configured to move back and forth along the receiving cavity to drive the extrusion portion to compress and deform the liquid extraction pipe. The liquid extraction assembly is detachably installed in pressing unit and is replaceable and suitable for single-use situations.Type: ApplicationFiled: September 29, 2021Publication date: March 31, 2022Inventors: SHUN-YAO CHENG, JE-WEI CHIANG, YU-SHENG CHANG, YU-MIN WANG, CHIA-HUA TSAI, CHUAN-CI HUANG
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Patent number: 11211811Abstract: A three-port charger with an inversion function includes a primary side conversion circuit connected with a primary side winding of a transformer, a secondary side first conversion circuit connected with a second winding of the transformer, a secondary side second conversion circuit connected with a third winding of the transformer and a fourth winding of the transformer which are connected in series, and a central control unit used for controlling switches in the primary side conversion circuit, the secondary side first conversion circuit and the secondary side second conversion circuit. The primary side conversion circuit is connected with an external power supply, the secondary side first conversion circuit is connected with a high-voltage battery. The secondary side second conversion circuit is connected with a low-voltage load. The present invention integrates the independent charger and a high-power DCDC module, and shares a power switch, a control circuit and a magnetic core.Type: GrantFiled: January 29, 2020Date of Patent: December 28, 2021Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.Inventors: Jun Liu, Yingying Feng, Shun Yao, Jinzhu Xu
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Patent number: 11197398Abstract: An installation structure and an installation method of a plug-in switch tube is disclosed in the present invention, the installation structure comprises, a PCB board, a plug-in switch tube fixed on said PCB board, and a housing matching said PCB board and said plug-in switch tube, wherein the lower end surface of said housing is provided with a cooling liquid flow channel, and said plug-in switch tube is pressed against the side wall of the cooling liquid flow channel by an elastic pressing-piece. The installation structure according to the present invention has the advantages of small volume, excellent heat dissipation effect, simple assembly, low cost and light weight.Type: GrantFiled: April 24, 2020Date of Patent: December 7, 2021Assignee: SHENZHEN VMAX NEW ENERGY CO., LTD.Inventors: Jun Liu, Yingying Feng, Shun Yao
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Publication number: 20210296993Abstract: A pre-chargeable DCDC conversion circuit includes a high-voltage side conversion module connected to a primary winding of a main transformer T1, a low-voltage side conversion module connected to a secondary winding of the main transformer, and a controller used for controlling the high-voltage side conversion module and the low-voltage side conversion module. A pre-charging module is connected in series in a direct-current bus of the low-voltage side conversion module, and the pre-charging module is used for pre-charging a capacitor of electric equipment connected to a direct-current bus of the high-voltage side conversion module when the complete machine is powered on. The pre-charging module and a forward DCDC share most of power devices and power loops, and only a small number of devices are added, such that the volume and cost are reduced compared with an independent pre-charging branch, and the control mode is simple.Type: ApplicationFiled: March 17, 2021Publication date: September 23, 2021Inventors: Jun LIU, Yingying FENG, Shun YAO, Changsheng ZHANG
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Publication number: 20210288575Abstract: A single-phase and three-phase compatible conversion circuit includes an EMC module, a PFC module, a switch K1 and a control module. The EMC module is connected between lines A, B, C and N of a power grid and the PFC module. Three lines A1, B1 and C1 are led out from the EMC module and are connected with the PFC module, and are respectively connected to a set virtual midpoint through capacitors CX1, CX2, and CX3. The virtual midpoint is connected to a bus midpoint of the PFC module through the switch K1. The control module is used for detecting a power grid input signal and controlling the state of the switch K1 according to the type of the power grid input signal. The common-mode noise of the three-phase conversion mode can be reduced, and the three-phase conversion mode can be controlled within a larger bus voltage regulation range.Type: ApplicationFiled: March 11, 2021Publication date: September 16, 2021Inventors: Jun LIU, Yingying FENG, Shun YAO, Renwei FENG
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Publication number: 20210268928Abstract: The present invention discloses an on-board integrated charging device and a current distribution calculating method thereof. The on-board integrated charging device comprises a voltage conversion module. The voltage conversion module is provided with an AC terminal connected to an alternating current or an alternating current load, an HV terminal connected to a power battery and an LV terminal connected to a direct current load. When the AC terminal is idle, the LV terminal is powered by the HV terminal, and an input current of the LV terminal is an actual current of the HV terminal. According to the on-board integrated charging device, OBC, DCAC and DCDC functions can be integrated on the same circuit board, a current reporting requirement can be realized through a distribution algorithm, and the volume and weight of the whole device can be reduced.Type: ApplicationFiled: May 17, 2021Publication date: September 2, 2021Inventors: Jun LIU, Yingying FENG, Shun YAO, Biwei ZHENG