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公开(公告)号：US11923690B2
公开(公告)日：2024-03-05
申请号：US16951883
申请日：2020-11-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hongliang Chen , Wei Chen , Changsheng Pei , Yongfa Zhu
CPC classification number: H02J50/12 , H02J7/0047 , H02J7/02 , H02J50/40 , H02J50/80 , H04B1/3827
Abstract: 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.
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2.发明授权公开(公告)号：US12068617B2
公开(公告)日：2024-08-20
申请号：US17758185
申请日：2020-11-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Changsheng Pei , Liangjin Chen
CPC classification number: H02J50/12 , H02J7/00712 , H02J50/402 , H02J50/80
Abstract: 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.
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公开(公告)号：US11870293B2
公开(公告)日：2024-01-09
申请号：US17213591
申请日：2021-03-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Changsheng Pei
CPC classification number: H02J7/02 , H02J50/12 , H02J2207/20 , H04M1/725
Abstract: 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.
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公开(公告)号：US20230129480A1
公开(公告)日：2023-04-27
申请号：US17928205
申请日：2021-03-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liang Hong , Changsheng Pei
Abstract: 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).
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公开(公告)号：US12020857B2
公开(公告)日：2024-06-25
申请号：US17155579
申请日：2021-01-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Changsheng Pei , Yongfa Zhu , Zhiqiang Zeng
CPC classification number: H01F38/14 , H01F27/2871 , H01F27/29 , H02J7/02 , H02J50/10
Abstract: 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.
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Patent Agency Ranking
6.发明授权公开(公告)号：US11916399B2
公开(公告)日：2024-02-27
申请号：US16878178
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Changsheng Pei , Yongfa Zhu , Heqian Yang , Jinsen Cai
IPC: H02J50/00 , H01F27/28 , H02J50/12 , H01F27/29 , H01F27/34 , H01F38/14 , H02J50/40 , H02J50/10 , H02J50/70
CPC classification number: H02J50/005 , H01F27/2823 , H01F27/2871 , H01F27/292 , H01F27/346 , H01F38/14 , H02J50/10 , H02J50/12 , H02J50/402 , H02J50/70 , H01F2027/348
Abstract: 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.
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7.发明申请公开(公告)号：US20210012959A1
公开(公告)日：2021-01-14
申请号：US17032158
申请日：2020-09-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Changsheng Pei , Yongfa Zhu , Zhiqiang Zeng , Xiaowei Chen
Abstract: 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.
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公开(公告)号：US20200280216A1
公开(公告)日：2020-09-03
申请号：US16879309
申请日：2020-05-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Changsheng Pei , Zhiqiang Zeng , Yongfa Zhu
Abstract: 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.
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9.发明授权Voltage conversion device and method for adjusting common mode noise impedance 有权用于调节共模噪声阻抗的电压转换装置和方法公开(公告)号：US09425686B2
公开(公告)日：2016-08-23
申请号：US14577773
申请日：2014-12-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Feng Zheng , Changsheng Pei , Yongfa Zhu
CPC classification number: H02M1/44 , H01F27/02 , H02M1/126 , H02M3/155 , H02M2001/0064 , H02M2001/123
Abstract: The present invention provides a voltage conversion device and a method for adjusting common mode noise impedance, which relates to the circuit field, and enables a common mode impedance value of a noise source and an impedance value of an EMI filter to enter a mismatch state, so as to reduce a restriction on design of the EMI filter, so that a size of the EMI filter is smaller and utilization efficiency of the EMI filter is higher. The method is: adjusting a common mode impedance value of a noise source by adjusting a balanced impedance value in a balanced winding on a voltage conversion device, so as to enable the common mode impedance value of the noise source and an impedance value of an EMI filter to enter a mismatch state.
Abstract translation: 本发明提供了一种与电路领域相关的用于调节共模噪声阻抗的电压转换装置和方法，并且使得噪声源的共模阻抗值和EMI滤波器的阻抗值能够进入失配状态， 以减少对EMI滤波器的设计的限制，使得EMI滤波器的尺寸更小，并且EMI滤波器的利用效率更高。 该方法是：通过调整电压转换装置的平衡绕组中的平衡阻抗值来调整噪声源的共模阻抗值，以使噪声源的共模阻抗值和EMI的阻抗值 过滤器进入不匹配状态。
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公开(公告)号：US11870274B2
公开(公告)日：2024-01-09
申请号：US17160730
申请日：2021-01-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yongfa Zhu , Tao Ding , Heqian Yang , Changsheng Pei , Zhi Zhang
CPC classification number: H02J50/402 , H02J50/10 , H02J50/80 , H02J50/90
Abstract: 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.
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