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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：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：US20230246486A1
公开(公告)日：2023-08-03
申请号：US18193616
申请日：2023-03-30
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Yuechao Li , Bing Cai
IPC: H02J50/40 , H02J50/12 , H02M3/155 , H02M7/5387
CPC classification number: H02J50/402 , H02J50/12 , H02M3/155 , H02M7/5387 , H02J2207/20
Abstract: A transmit end for multi-device wireless charging includes N half-bridge inverter circuits, a multi-coil gating matrix, and a multi-coil module. Input terminals of the N half-bridge inverter circuits are connected to corresponding direct currents, and output terminals of the N half-bridge inverter circuits are connected to input terminals of the multi-coil gating matrix. The multi-coil gating matrix includes a plurality of switches configured to respectively connect the output terminals of the N half-bridge inverter circuits to corresponding transmit coils in the multi-coil module.
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4.发明授权公开(公告)号：US11637442B2
公开(公告)日：2023-04-25
申请号：US17535356
申请日：2021-11-24
Applicant: Huawei Digital Power Technologies Co., Ltd.
Inventor： Baoshan Wu , Yunpeng Yang , Chengliang Zhang , Bing Cai , Donghao Wu
Abstract: A wirelessly charged electronic device, a wireless charging method, and a wireless charging system are disclosed. A charger of a receive end of the system includes an open-loop DC-DC (direct current-to-direct current) converter. When power of a transmit end is greater than a first preset threshold of the transmit end and required charging power is greater than a first preset threshold of a receive end, the open-loop DC-DC converter is controlled to work in a fast charging phase, specifically including: controlling the open-loop DC-DC converter to work in a constant current step-down phase to charge a battery at a constant current, or controlling the open-loop DC-DC converter to work in a constant voltage step-down phase to charge the battery at a constant voltage.
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