公开(公告)号：US12176969B2

公开(公告)日：2024-12-24

申请号：US17989517

申请日：2022-11-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yanding Liu ,  Weiliang Shu ,  Furong Xiao ,  Qitang Liu

IPC: H04B5/79 ,  G06F1/16 ,  H02J50/05 ,  H02J50/12 ,  H02J50/80 ,  H04B5/22 ,  H04B5/24

Abstract: A terminal device and a method for controlling the terminal device are provided. The terminal device includes a display screen, a housing, a middle frame and a transmitting circuit. The transmitting circuit is disposed on a side of the middle frame and faces the housing. The transmitting circuit includes a matching network and a transmitting coil connected to the matching network. The matching network is configured to perform impedance matching on a received alternating current power signal and send the received alternating current power signal to the transmitting coil. The matching network includes a parallel resonant capacitor connected in parallel to the transmitting coil. The transmitting circuit further includes a resistance switching circuit connected in series to the parallel resonant capacitor.

公开(公告)号：US12176831B2

公开(公告)日：2024-12-24

申请号：US18158038

申请日：2023-01-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Weiliang Shu ,  Wingto Fan ,  Shuangquan Chen

IPC: H02P21/14 ,  H02P9/14 ,  H02P25/03 ,  H02P29/024

Abstract: An input end of a first power conversion circuit of the system is connected to a power supply, and an output end of the first power conversion circuit is connected to a stator winding of an electrical excitation motor. An input end of a second power conversion circuit is connected to the power supply, and an output end of the second power conversion circuit is connected to a primary side of an excitation transformer. The excitation transformer transmits energy required by an excitation winding of the electrical excitation motor from a stator to a rotor. A first controller controls the first power conversion circuit to inject a current excitation into the stator winding, so that a current is generated on the excitation winding. A detection circuit obtains a response signal of the primary side of the excitation transformer and sends the response signal to a second controller.

公开(公告)号：US20210091599A1

公开(公告)日：2021-03-25

申请号：US17113328

申请日：2020-12-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Qitang Liu ,  Ce Liu ,  Weiliang Shu ,  Yanding Liu ,  Pinghua Wang ,  Yong Cao

IPC: H02J50/10 ,  H02J50/90 ,  H02J50/80 ,  H02J50/40

Abstract: A wireless charging apparatus includes a receive end coil, a switch selection circuit, a plurality of charging circuits, and a receive end controller. An input end of the switch selection circuit is connected to an output end of the receive end coil, and an output end of the switch selection circuit is connected to an input end of each of the charging circuits.