Patents by Inventor Changsheng Pei
Changsheng Pei 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: 11923690Abstract: A wireless charging apparatus for a wireless power transmission system and a method are provided. The apparatus includes a voltage conversion circuit, an excitation coil, n first resonance coils, and a controller, where n is greater than or equal to 3. The voltage conversion circuit is connected to the excitation coil and converts a power grid voltage into a high-frequency alternating current voltage. The excitation coil generates a magnetic field based on the high-frequency alternating current voltage. The n first resonance coils are arranged in different directions and conducts the magnetic field, and the controller monitors power statuses of the first resonance coils, and enable or disable the first resonance coils based on the power statuses.Type: GrantFiled: November 18, 2020Date of Patent: March 5, 2024Assignee: Huawei Technologies Co., Ltd.Inventors: Hongliang Chen, Wei Chen, Changsheng Pei, Yongfa Zhu
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Patent number: 11916399Abstract: This application describes a coil. The coil includes an output terminal, an input terminal, and a wire-winding part that is connected between the output terminal and the input terminal. A slot is disposed on at least a part of the wire-winding part, and a depth of the slot in any direction of a cross section of the wire-winding part is less than or equal to a distance between two points that are the farthest away from each other on the cross section of the wire-winding part. The wire-winding part is a metal conductor made through spiral winding. The input terminal and the output terminal are configured to connect the wire-winding part to an external circuit.Type: GrantFiled: May 19, 2020Date of Patent: February 27, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Changsheng Pei, Yongfa Zhu, Heqian Yang, Jinsen Cai
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Patent number: 11870274Abstract: A wireless charging device is disclosed, which includes: a charging pad and a first controller. The charging pad includes a plurality of charging units, the plurality of charging units include a first charging unit and a second charging unit. When a first electromagnetic coupling strength between the first charging unit and the to-be-charged device is greater than or equal to a first threshold, the first controller is configured to control the first charging unit to separately charge the to-be-charged device. When both the second electromagnetic coupling strength between the second charging unit and the to-be-charged device and the first electromagnetic coupling strength are less than a first threshold, and are greater than or equal to a second threshold, the first controller is configured to control the first charging unit and the second charging unit to jointly charge the target to-be-charged device.Type: GrantFiled: January 28, 2021Date of Patent: January 9, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yongfa Zhu, Tao Ding, Heqian Yang, Changsheng Pei, Zhi Zhang
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Patent number: 11870293Abstract: A wireless charging receiver circuit, a control method, and a terminal device are disclosed, to compensate for, to some extent, decreases in an output voltage and an output power of the wireless charging receiver circuit due to a great increase in a transmission distance between a secondary coil in the wireless charging receiver circuit and a primary coil in a corresponding wireless charging transmitter circuit.Type: GrantFiled: March 26, 2021Date of Patent: January 9, 2024Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventor: Changsheng Pei
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Patent number: 11837877Abstract: This application discloses a coil module, which includes: an insulation layer, a first planar coil winding, and a second planar coil winding, one turn of coil of the first planar coil winding includes a first portion, a second portion, and a first connection part, and one turn of coil of the second planar coil winding includes a third portion, a fourth portion, and a second connection part. The first connection portion connects an outer side part of the first portion and an inner side part of the second portion, the second connection portion connects an inner side part of the third portion and an outer side part of the fourth portion, and there is an overlap between a projection of the first connection portion on a plane of the insulation layer and a projection of the second connection portion on the plane of the insulation layer.Type: GrantFiled: September 25, 2020Date of Patent: December 5, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Changsheng Pei, Yongfa Zhu, Zhiqiang Zeng, Xiaowei Chen
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Publication number: 20230369893Abstract: A coil assembly, an electronic device, and a wireless charger. The coil assembly includes a first coil winding, a second coil winding, and a circuit board. The second coil winding is stacked with the first coil winding. A plurality of first terminals and a plurality of second terminals are disposed on the circuit board. Each first terminal is connected to each second terminal by using a cable. In a plurality of cables used to connect the plurality of first terminals and the plurality of second terminals, at least two cables are changed to different line layers in a cross region through first vias to be disposed in a crossed manner.Type: ApplicationFiled: August 24, 2021Publication date: November 16, 2023Inventors: Changsheng Pei, Anle Zhang, Yufei Chen
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Patent number: 11735956Abstract: A wireless charging system includes a transmitter and a receiver, the transmitter includes a transmitter coil and a first series matching capacitor, the transmitter coil is connected to the first series matching capacitor in series to form a first oscillation circuit, and the first oscillation circuit is configured to transfer power to the receiver, and the receiver includes a receiver coil and a second series matching capacitor, the receiver coil is connected to the second series matching capacitor in series to form a second oscillation circuit, and the second oscillation circuit is configured to receive the power transferred by the first oscillation circuit.Type: GrantFiled: May 20, 2020Date of Patent: August 22, 2023Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Changsheng Pei, Zhiqiang Zeng, Yongfa Zhu
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Publication number: 20230129480Abstract: An electronic device and a control method for the electronic device are provided, and relate to the field of wireless charging technologies, to improve compatibility of a power receiving terminal device in wireless charging with a power transmitting terminal device by improving ASK communication quality. The electronic device includes a device circuit (50), a voltage conversion circuit (203), a rectifier circuit (202), a resonant circuit (201), and a modulation circuit (204). The resonant circuit (201) includes a resonant inductor (L2) and a resonant capacitor control circuit (ci1) connected in series to the resonant inductor (L2). A first end of the resonant inductor (L2) is coupled to the rectifier circuit (202), a second end of the resonant inductor (L2) is coupled to a first end of the resonant capacitor control circuit (ci1), and a second end of the resonant capacitor control circuit (ci1) is coupled to the rectifier circuit (202).Type: ApplicationFiled: March 3, 2021Publication date: April 27, 2023Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Liang Hong, Changsheng Pei
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Electronic Device, Wireless Charging Receive Apparatus, Control Method, and Wireless Charging System
Publication number: 20230065766Abstract: In the wireless charging receive apparatus of the electronic device, a first communication circuit receives charging data, where the charging data is used to indicate a charging type. A first controller identifies, based on the charging data, that the charging type is a first charging type, and outputs a first rectifier control signal to control a first rectifier circuit to operate in a half-bridge mode. Alternatively, a first controller identifies, based on the charging data, that the charging type is a second charging type, and outputs a second rectifier control signal to control a first rectifier circuit to operate in a full-bridge mode. A first receive coil receives an alternating magnetic field and outputs a first induced voltage.Type: ApplicationFiled: November 26, 2020Publication date: March 2, 2023Inventors: Changsheng Pei, Liangjin Chen -
Publication number: 20210218264Abstract: A wireless charging receiver circuit, a control method, and a terminal device are disclosed, to compensate for, to some extent, decreases in an output voltage and an output power of the wireless charging receiver circuit due to a great increase in a transmission distance between a secondary coil in the wireless charging receiver circuit and a primary coil in a corresponding wireless charging transmitter circuit.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Inventor: Changsheng Pei
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Publication number: 20210152028Abstract: A wireless charging device is disclosed, which includes: a charging pad and a first controller. The charging pad includes a plurality of charging units, the plurality of charging units include a first charging unit and a second charging unit. When a first electromagnetic coupling strength between the first charging unit and the to-be-charged device is greater than or equal to a first threshold, the first controller is configured to control the first charging unit to separately charge the to-be-charged device. When both the second electromagnetic coupling strength between the second charging unit and the to-be-charged device and the first electromagnetic coupling strength are less than a first threshold, and are greater than or equal to a second threshold, the first controller is configured to control the first charging unit and the second charging unit to jointly charge the target to-be-charged device.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Inventors: Yongfa ZHU, Tao DING, Heqian YANG, Changsheng PEI, Zhi ZHANG
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Publication number: 20210142942Abstract: A coil module includes a first planar coil winding and a second planar coil winding. A first coil of the first planar coil winding includes a first outer side part and a first inner side part. A first coil of the second planar coil winding includes a second outer side part and a second inner side part. An end part of the first outer side part is connected to an end part of the second inner side part, and an end part of the second outer side part is connected to an end part of the first inner side part.Type: ApplicationFiled: January 22, 2021Publication date: May 13, 2021Inventors: Changsheng Pei, Yongfa Zhu, Zhiqiang Zeng
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Publication number: 20210075261Abstract: A wireless charging apparatus for a wireless power transmission system. The apparatus includes a voltage conversion circuit, an excitation coil, n first resonance coils, and a controller, where n is greater than or equal to 3. The voltage conversion circuit is connected to the excitation coil and converts a power grid voltage into a high-frequency alternating current voltage. The excitation coil generates a magnetic field based on the high-frequency alternating current voltage. The n first resonance coils are arranged in different directions and conducts the magnetic field, and the controller monitors power statuses of the first resonance coils, and enable or disable the first resonance coils based on the power statuses.Type: ApplicationFiled: November 18, 2020Publication date: March 11, 2021Inventors: Hongliang CHEN, Wei CHEN, Changsheng PEI, Yongfa ZHU
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Publication number: 20210012959Abstract: This application discloses a coil module, which includes: an insulation layer, a first planar coil winding, and a second planar coil winding, one turn of coil of the first planar coil winding includes a first portion, a second portion, and a first connection part, and one turn of coil of the second planar coil winding includes a third portion, a fourth portion, and a second connection part. The first connection portion connects an outer side part of the first portion and an inner side part of the second portion, the second connection portion connects an inner side part of the third portion and an outer side part of the fourth portion, and there is an overlap between a projection of the first connection portion on a plane of the insulation layer and a projection of the second connection portion on the plane of the insulation layer.Type: ApplicationFiled: September 25, 2020Publication date: January 14, 2021Inventors: Changsheng Pei, Yongfa Zhu, Zhiqiang Zeng, Xiaowei Chen
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Magnetic integrated device including multiple core columns and windings and power conversion circuit
Patent number: 10855190Abstract: A magnetic integrated device is disclosed, the device includes: a first magnetic core base and a second magnetic core base that are parallel and a first magnetic core column, a second magnetic core column, and a third magnetic core column that are located between the first magnetic core base and the second magnetic core base; and a first winding, a second winding, and a third winding are wound on the first magnetic core column, the second magnetic core column, and the third magnetic core column respectively in a same manner to form a closed magnetic flux loop, where the first winding, the second winding, and the third winding are separately used for connecting to a branch of a three-phase parallel circuit, and in all branches of the three-phase parallel circuit, values of currents are the same, and a difference between each two current phases is 120 degrees.Type: GrantFiled: December 7, 2018Date of Patent: December 1, 2020Assignee: Huawei Technologies Co., Ltd.Inventors: Heqian Yang, Changsheng Pei, Yongtao Liang -
Publication number: 20200280216Abstract: A wireless charging system includes a transmitter and a receiver, the transmitter includes a transmitter coil and a first series matching capacitor, the transmitter coil is connected to the first series matching capacitor in series to form a first oscillation circuit, and the first oscillation circuit is configured to transfer power to the receiver, and the receiver includes a receiver coil and a second series matching capacitor, the receiver coil is connected to the second series matching capacitor in series to form a second oscillation circuit, and the second oscillation circuit is configured to receive the power transferred by the first oscillation circuit.Type: ApplicationFiled: May 20, 2020Publication date: September 3, 2020Inventors: Changsheng Pei, Zhiqiang Zeng, Yongfa Zhu
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Publication number: 20200279686Abstract: This application describes a coil. The coil includes an output terminal, an input terminal, and a wire-winding part that is connected between the output terminal and the input terminal. A slot is disposed on at least a part of the wire-winding part, and a depth of the slot in any direction of a cross section of the wire-winding part is less than or equal to a distance between two points that are the farthest away from each other on the cross section of the wire-winding part. The wire-winding part is a metal conductor made through spiral winding. The input terminal and the output terminal are configured to connect the wire-winding part to an external circuit.Type: ApplicationFiled: May 19, 2020Publication date: September 3, 2020Inventors: Changsheng PEI, Yongfa ZHU, Heqian YANG, Jinsen CAI
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Patent number: 10447225Abstract: A filter apparatus, which includes a feedback active common-mode filter and a feed-forward active common-mode filter, the feedback active common-mode filter includes a common-mode noise detection component and a first filter circuit, and the feed-forward active common-mode filter includes the common-mode noise detection component and a second filter circuit, where the first filter circuit is connected between the common-mode noise detection component and the device, and performs feedback filtering on a first common-mode noise signal, to obtain a second common-mode noise signal; the common-mode noise detection component is connected between the first filter circuit and the second filter circuit, detects the second common-mode noise signal, and provides the second filter circuit with the second common-mode noise signal; and the second filter circuit is connected between an external power source and the common-mode noise detection component, and performs feed-forward filtering on the second common-mode noise sigType: GrantFiled: October 26, 2017Date of Patent: October 15, 2019Assignee: Huawei Technologies Co., Ltd.Inventors: Changsheng Pei, Yongbing Gao, Heling Zhang
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Publication number: 20190109542Abstract: A magnetic integrated device is disclosed, the device includes: a first magnetic core base and a second magnetic core base that are parallel and a first magnetic core column, a second magnetic core column, and a third magnetic core column that are located between the first magnetic core base and the second magnetic core base; and a first winding, a second winding, and a third winding are wound on the first magnetic core column, the second magnetic core column, and the third magnetic core column respectively in a same manner to form a closed magnetic flux loop, where the first winding, the second winding, and the third winding are separately used for connecting to a branch of a three-phase parallel circuit, and in all branches of the three-phase parallel circuit, values of currents are the same, and a difference between each two current phases is 120 degrees.Type: ApplicationFiled: December 7, 2018Publication date: April 11, 2019Inventors: Heqian YANG, Changsheng PEI, Yongtao LIANG
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Patent number: 10186974Abstract: A magnetic integrated device is disclosed, the device includes: a first magnetic core base and a second magnetic core base that are parallel and a first magnetic core column, a second magnetic core column, and a third magnetic core column that are located between the first magnetic core base and the second magnetic core base; and a first winding, a second winding, and a third winding are wound on the first magnetic core column, the second magnetic core column, and the third magnetic core column respectively in a same manner to form a closed magnetic flux loop, where the first winding, the second winding, and the third winding are separately used for connecting to a branch of a three-phase parallel circuit, and in all branches of the three-phase parallel circuit, values of currents are the same, and a difference between each two current phases is 120 degrees.Type: GrantFiled: May 5, 2016Date of Patent: January 22, 2019Assignee: Huawei Technologies Co., Ltd.Inventors: Heqian Yang, Changsheng Pei, Yongtao Liang