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公开(公告)号：US12046925B2
公开(公告)日：2024-07-23
申请号：US17383661
申请日：2021-07-23
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Di Zhou , Le Wang , Xiaoqing Hu
CPC classification number: H02J50/80 , H02J50/12 , H02J2310/22
Abstract: This application discloses a wireless charging receiver and a wireless charging method. The method includes: receiving, by using a first oscillation circuit, pulse energy emitted by a transmitter, where the first oscillation circuit includes a first receiving coil configured to convert the pulse energy and output power; when a voltage value output by the first oscillation circuit reaches a first reference voltage value, sending a power transfer instruction to the transmitter, so that the transmitter emits energy according to the power transfer instruction, where the first reference voltage value is a working voltage threshold of a processor; and receiving, by using a second oscillation circuit, the energy emitted by the transmitter according to the power transfer instruction.
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Patent Agency Ranking
公开(公告)号：US11870272B2
公开(公告)日：2024-01-09
申请号：US17727355
申请日：2022-04-22
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Songnan Yang , Xiaoqing Hu , Bing Cai
CPC classification number: H02J50/10 , H01F38/14 , H02J7/02 , H04M1/0264 , H04M2201/08
Abstract: A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing of the mobile terminal, and includes two interconnected coils. The two coils are located in a same plane and are connected in series, and winding directions of the two coils are opposite, so that directions of magnetic fluxes generated by the two coils on the metal rear housing are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.
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公开(公告)号：US20220103021A1
公开(公告)日：2022-03-31
申请号：US17643465
申请日：2021-12-09
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Songnan Yang , Donghao Wu , Xiaoqing Hu
Abstract: A method includes performing a power loss calibration on a wireless power transfer system, enabling a wireless power transfer on the wireless power transfer system, calculating a power loss of the wireless power transfer system based on the power loss calibration, measuring a coupling factor between a transmitter coil and a receiver coil of the wireless power transfer system, and determining whether to continue the wireless power transfer of the wireless power transfer system based on the calculated power loss and the measured coupling factor.
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公开(公告)号：US11355964B2
公开(公告)日：2022-06-07
申请号：US16721310
申请日：2019-12-19
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Songnan Yang , Xiaoqing Hu , Bing Cai
Abstract: A wireless charging receiving apparatus of a mobile terminal. The wireless charging receiving apparatus is configured to be disposed inside the mobile terminal and close to a metal rear housing (3) of the mobile terminal, and includes two interconnected coils (701,702). The two coils (701,702) are located in a same plane and are connected in series, and winding directions of the two coils (701,702) are opposite, so that directions of magnetic fluxes generated by the two coils (701,702) on the metal rear housing (3) are opposite, thereby resolving a problem of an eddy current on the metal rear housing of the mobile terminal such as a smartphone including a wireless charging system, and reducing a temperature of a metal body and reducing an energy loss without forming a hole or a seam on the metal rear housing.
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公开(公告)号：US20240175948A1
公开(公告)日：2024-05-30
申请号：US18436724
申请日：2024-02-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Shu Zhong , Xiaolu Hu , Xiaming Jing , Liqiong Yi , Xiaoqing Hu , Tao Xie
CPC classification number: G01R33/091 , G01R19/0092 , H02M1/0009
Abstract: A current detection apparatus includes a magnetic sensor, configured to sense a magnetic field change of a to-be-tested current path, and convert the magnetic field change into an electrical signal; and a magnetically conductive unit, including a magnetically conductive material. The magnetically conductive unit is disposed on at least one of the following positions: a left side of the magnetic sensor, a right side of the magnetic sensor, and an upper side of the magnetic sensor, and the left side and the right side of the magnetic sensor are a left side and a right side of the magnetic sensor along the to-be-tested current path.
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公开(公告)号：US20230187114A1
公开(公告)日：2023-06-15
申请号：US18166010
申请日：2023-02-08
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Xiaoqing Hu , Yanjun Zhi , Xiaming Jing
CPC classification number: H01F27/255 , H01F27/2847 , H01F41/0246 , H01F27/306 , H01F27/324 , H01F27/06 , H01F2027/065
Abstract: A power inductor includes a winding and a metal magnetic powder core. The metal magnetic powder core is configured to support the winding, and the winding uses a metal conductive sheet. During assembly, the metal magnetic powder core is integrated with the winding through pressing, the metal magnetic powder core wraps the winding, and the metal magnetic powder core is insulated from the winding. The winding has a first pin and a second pin, and the first pin and the second pin are exposed on different surfaces of the metal magnetic powder core. Pins are separately disposed on two different surfaces of the power inductor. In addition, the winding is formed by integrally pressing the metal conductive sheet and the metal magnetic powder core.
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