公开(公告)号：US11929626B2

公开(公告)日：2024-03-12

申请号：US17278832

申请日：2018-09-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenchao Yu ,  Haizhen Gao ,  Lvjian Yang ,  Jiang Chen ,  Hui Wang

IPC: H02J50/80 ,  H02J50/12

CPC classification number: H02J50/12 ,  H02J50/80 ,  H02J2310/22

Abstract: A method that includes: transmitting, by an electronic device, a first detecting signal when the electronic device is in a reverse wireless charging mode; receiving, by the electronic device at a gap moment between at least two adjacent moments at which the first detecting signal is transmitted, a second detecting signal transmitted by a wireless charging device; and if the second detecting signal received by the electronic device meets a preset condition, automatically switching, by the electronic device, from the reverse wireless charging mode to a forward wireless charging mode.

公开(公告)号：US10998741B2

公开(公告)日：2021-05-04

申请号：US16341712

申请日：2016-10-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenchao Yu ,  Chong Wen

IPC: H02J7/00 ,  H02J7/02

Abstract: Some embodiments of the present invention provide a charger. According to the charger, a detection signal generation circuit actively sends a detection signal; a feedback circuit detects level signals on a sampling component, and generates a feedback signal according to the level signals; a switch component controls, according to the feedback signal, the charger to output a charging voltage; and when the level signals meet a preset condition (the preset condition is a preset condition that the level signals meet when an abnormal short circuit occurs on a charging interface), the switch component controls the charger to stop outputting the charging voltage.

公开(公告)号：US20200052510A1

公开(公告)日：2020-02-13

申请号：US16341712

申请日：2016-10-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenchao Yu ,  Chong Wen

IPC: H02J7/00 ,  H02J7/02

Abstract: Some embodiments of the present invention provide a charger. According to the charger, a detection signal generation circuit actively sends a detection signal; a feedback circuit detects level signals on a sampling component, and generates a feedback signal according to the level signals; a switch component controls, according to the feedback signal, the charger to output a charging voltage; and when the level signals meet a preset condition (the preset condition is a preset condition that the level signals meet when an abnormal short circuit occurs on a charging interface), the switch component controls the charger to stop outputting the charging voltage.

公开(公告)号：US20250030266A1

公开(公告)日：2025-01-23

申请号：US18907898

申请日：2024-10-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wenchao Yu ,  Ronglong Tan ,  Jianbo Ye

IPC: H02J7/34 ,  H01M10/42 ,  H02J1/08 ,  H02J7/00

Abstract: An electronic device includes at least a battery, a working circuit, and a boost circuit. When the battery supplies power to the working circuit, the boost circuit supplies power to the working circuit in response to that the electronic device meets a low-temperature or low-voltage condition. In a power supply path switching process, the boost circuit first supplies power to the working circuit through a diode, and then disconnects a path for supplying power to the working circuit by the battery. Before the path for supplying power to the working circuit by the battery is disconnected, a voltage for supplying power to the working circuit by the boost circuit through the diode is controlled not to be higher than a voltage for supplying power to the working circuit by the battery.