公开(公告)号：US20230042691A1

公开(公告)日：2023-02-09

申请号：US17789915

申请日：2020-12-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenchao YU ,  Zhiyong ZHENG ,  Chong WEN ,  Honghai LI

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/42

Abstract: A charging circuit includes a first charging path and a second charging path. The first charging path and the second charging path are connected in parallel, and the first charging path and the second charging path are both used to receive a charging signal via a wired charging interface. The first charging path is connected to a first power end of a battery, and the second charging path is connected to a second power end of the battery. The first end of the battery is different from the second end of the battery.

公开(公告)号：US20190319478A1

公开(公告)日：2019-10-17

申请号：US16304067

申请日：2017-04-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chao ZHANG ,  Chong WEN

IPC: H02J7/04 ,  H02J7/02 ,  H01M10/44

Abstract: A battery charging apparatus and method, a terminal, a power adapter, and a storage medium relate to the electronics field where the method includes detecting temperature of a charging path in a battery charging apparatus, and when a power adapter supplying charging power for the battery charging apparatus works in a first working mode and a detected largest temperature value is greater than or equal to a preset threshold, instructing the power adapter to switch to a second working mode, decoupling a charging path corresponding to the first working mode, and coupling a charging path corresponding to the second working mode. This reduces impact of local heat accumulation on device performance during charging of a terminal battery, lengthens a device life span, and improves user experience.

公开(公告)号：US20200311010A1

公开(公告)日：2020-10-01

申请号：US16650340

申请日：2017-09-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chong WEN

IPC: G06F13/42 ,  G06F13/40 ,  H05K9/00

Abstract: A method for controlling a Type C USB interface includes disconnecting a shielding housing of a Type C USB interface (J1) from the ground of an electronic device, obtaining a level (V12) of the shielding housing, determining, based on the obtained level (V12), whether an external device is plugged into or unplugged from the Type C USB interface (J1); outputting a signal to a CC pin of the Type C USB interface (J1) when it is determined that the external device is plugged into the Type C USB interface (J1) of the electronic device; and stopping outputting the signal to the CC pin of the Type C USB interface (J1) when it is determined that the an external device is unplugged from the Type C USB interface (J1) of the electronic device or that no the external device is connected to the Type C USB interface (J1).

公开(公告)号：US20190324086A1

公开(公告)日：2019-10-24

申请号：US16474867

申请日：2017-02-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wenchao YU ,  Chong WEN ,  Hui WANG ,  Jianjun XU ,  Kangjie CHAO ,  Huogen KUANG

IPC: G01R31/36 ,  G01R31/02 ,  H01M10/04 ,  H01M10/48 ,  H01M10/42

Abstract: Embodiments of this application disclose a battery leakage current check method, apparatus, and circuit, and relate to the battery field, so as to check for a leakage current inside a battery. The battery leakage current check method includes: when a power adapter supplies power to an electronic device, controlling the battery to stop supplying power to the electronic device; obtaining a voltage parameter and a duration parameter, where the voltage parameter is a difference between voltages of the battery at two different moments, and the duration parameter is duration between the two different moments; and determining, based on the voltage parameter and the duration parameter, whether a leakage parameter of the battery meets a preset condition. The embodiments of this application are applied to battery leakage current check.

公开(公告)号：US20190165588A1

公开(公告)日：2019-05-30

申请号：US16265609

申请日：2019-02-01

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chong WEN

IPC: H02J7/00 ,  H02H5/04 ,  H02J7/04 ,  H02H7/18 ,  G08B21/18

Abstract: Embodiments of the present invention provide a charging protection method, including: measuring a charging voltage, a charging current, and a temperature rise of a charging interface of a charged device; detecting whether the charging voltage falls beyond a preset voltage range, detecting whether the charging current is less than a preset current threshold, and detecting whether the temperature rise is greater than a preset temperature rise threshold; and if a detection result of any one or more of the three items is yes, disconnecting a charging circuit of a charger. Correspondingly, the embodiments of the present invention further provide a charging protection apparatus, which can disconnect a charging circuit in a timely manner when a charging exception occurs, thereby avoiding damage to a charging interface.