公开(公告)号：US20220216734A1

公开(公告)日：2022-07-07

申请号：US17703709

申请日：2022-03-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shaojie FENG ,  Zhiqiang ZENG ,  Yongfa ZHU ,  Jin QIU

IPC: H02J50/12 ,  H02J50/00 ,  H02J7/00

Abstract: This application discloses a wireless charging system, and pertains to the field of wireless charging technologies. The system includes: a transmit apparatus and a receive apparatus; the transmit apparatus includes an inverter circuit and two transmit electrodes, an input terminal of the inverter circuit is connected to a direct-current power supply, and two output terminals of the inverter circuit are connected to the two transmit electrodes respectively; the receive apparatus includes two receive electrodes and a rectifier circuit, two input terminals of the rectifier circuit are connected to the two receive electrodes respectively, and an output terminal of the rectifier circuit is connected to a load.

公开(公告)号：US20250105751A1

公开(公告)日：2025-03-27

申请号：US18969614

申请日：2024-12-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongfa ZHU ,  Zhiqiang ZENG ,  Xiangyuan DENG ,  Jinsen CAI ,  Benhu LI ,  Haitao CHEN ,  Chengfeng JIANG

IPC: H02M3/335 ,  H02M1/00 ,  H02M3/00

Abstract: This disclosure provides a converter and an electronic device that incorporates the converter. The converter includes: an input terminal, a first inverter circuit, a first transformer, a first rectifier circuit, and an output terminal. The first transformer includes a first primary-side winding and a first secondary-side winding. The input terminal is connected to a first terminal of the first inverter circuit, a second terminal of the first inverter circuit is connected to the first primary-side winding, and the first rectifier circuit is connected between the first secondary-side winding and the output terminal. A third terminal of the first inverter circuit is connected to the output terminal; or a third terminal of the first inverter circuit is connected to the first secondary-side winding. In this disclosure, a loss of the converter can be reduced.

公开(公告)号：US20230344343A1

公开(公告)日：2023-10-26

申请号：US18325289

申请日：2023-05-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yongfa ZHU ,  Zhiqiang ZENG ,  Jinsen CAI ,  Heqian YANG ,  Xiaowei CHEN ,  Tao DING

IPC: H02M3/158 ,  H02M1/00

CPC classification number: H02M3/158 ,  H02M1/0009 ,  H02M1/0025 ,  H02M1/007

Abstract: This application provides a conversion circuit, a switch-mode power supply, and an electronic device. The conversion circuit mainly includes a first branch circuit and a second branch circuit. Input sides of the first branch circuit and the second branch circuit are connected in series, and output sides of the first branch circuit and the second branch circuit are connected in parallel; or input sides of the first branch circuit and the second branch circuit are connected in parallel, and output sides of the first branch circuit and the second branch circuit are connected in series. This implementation helps improve efficiency of the conversion circuit. When an inductor is disposed in the conversion circuit, a size of the inductor is further reduced, to improve integration.