Honor Device Co., Ltd.

Huawei Device Co., Ltd.

Xialing Zhang

Hua Yin Huang

Xinyu Liu

Xing Wang

Chunshu Li

Yanbin An

Luoyi Liang

Jiaxiang Song

The charging/discharging protection circuit comprises a power supply end, a grounding end, and an under-voltage protection threshold control end; the power supply end is connected to a positive electrode of a battery; the grounding end is connected to a negative electrode of the battery; the under-voltage protection threshold control end is configured to receive a first control signal. The charging/discharging protection circuit is configured to reduce an under-voltage protection threshold of the battery under the control of the first control signal when the temperature of the battery is smaller than a set temperature threshold and the discharging current of the battery is greater than a set current threshold.

Charging/discharging protection circuit, terminal device, and battery discharging control method

This application provides a wireless charging coil, and an electronic device and an antenna that include the wireless charging coil. The wireless charging coil includes a plurality of coil groups that are at a plurality of layers and that are connected in series, and an insulation layer that is disposed between two layers of the plurality of coil groups. The wireless charging coil includes a first area and a second area that is disposed at an outer periphery of the first area. A plurality of coil groups disposed in the second area are arranged at the plurality of layers, and each coil group includes a plurality of coils wound in parallel at one layer.

Wireless charging coil, electronic device, and antenna

This application provides a battery protection circuit, a battery protection board, a battery, and a terminal device. The battery protection circuit includes: a first detection unit; a second detection unit; and a current detection element, a first switch unit, and a second switch unit that are configured to connect to an electrochemical cell in series, to form a charging loop or a discharging loop. The first detection unit corresponds to the first switch unit, and the second detection unit corresponds to the second switch unit. Each detection unit controls, based on a detected voltage at two ends of the same current detection element, a corresponding switch unit to be closed or opened, so as to control the loop to be closed or opened. The first detection unit and the second detection unit detect the voltage at the two ends of the same current detection element to detect a current passing through the electrochemical cell, so that a quantity of current detection elements in the battery protection circuit can be effectively reduced, to reduce impedance of the battery protection circuit.

Battery protection circuit, battery protection board, battery, and terminal device

A sliding expansion data card includes a data card interface, a spring plate, a main bearing plate, and a shield. The data card interface is set at one end of the main bearing plate. One end of the spring plate is set on the shield which is located on the lower surface of the main bearing plate, and the other end contacts the data card interface.

Sliding expansion data card

A USB interface device includes a USB connector electrically connected with a circuit board through pins. A shielding frame is attached to a joint between the USB connector and the circuit board and covering the pins. The shielding frame is a frame body having a first opening at a part thereof attached to the circuit board and a second opening at a part thereof attached to the USB connector.

Growing community of inventors

Shenzhen, China

Xialing Zhang