Huawei Technologies Co., Limited

Tencent Technology (Shenzhen) Company Limited

Hisilicon Technologies Co., Ltd.

Pengfei Wang

Jun Song

Jianping Wang

Yang Yang

Hui Li

Bin Zhang

Wei Mao

Leteng Weng

Feng Chen

Yi Gao

Qiang Lu

Xiaoyu Yu

Keren Li

Chen Gong

Jinming Zhang

Qianya Lin

Mengsha Zhou

Xiaobin Fang

Wenrui Zhang

Xuan Ye

Junbin Kuang

Yongjie Li

Yi Wu

Hang Cheng

Siyu Xiao

Libin Ren

Shaomian Yao

Caofei Heng

Rui Tang

Sixin Gu

Zhenzhen Xu

Haixia Rao

Tanhong Li

Xinji Nie

Bei Yang

Wenxin Liao

Boen Liang

Zeming Fan

Weizhao Li

Leming Fang

Guowei Xiang

A power conversion circuit includes a first end of a first switch element coupled to an input power supply; a second end of the first switch element coupled to a first end of a first energy storage element, and a first end of a second switch element; a second end of the first energy storage element coupled to ground through a third switch element, and a first end of a fourth switch element; a second end of the second switch element coupled and connected to a battery; a first end of a second energy storage element coupled to two ends of the first energy storage element through a fifth switch element and a sixth switch element; a second end of the second energy storage element coupled to the battery; and a second end of the fourth switch element coupled to the battery.

Power conversion circuit, and charging apparatus and system

A power conversion circuit includes a first switch branch, a second switch branch, a third switch branch, a filter branch, and a first capacitor. A first terminal of the first capacitor is connected to a power source through the first switch branch, and a second terminal of the first capacitor is grounded through the second switch branch. The filter branch includes a filter inductor and a filter capacitor. A first terminal of the filter inductor is connected to the first terminal of the first capacitor, and a second terminal of the filter inductor is connected to a first terminal of the filter capacitor. A second terminal of the filter capacitor is grounded, and the filter capacitor is connected in parallel with the load. The third switch branch is connected between the second terminal of the first capacitor and the second terminal of the filter inductor.

Power conversion circuit and related apparatus and terminal device

The invention provides a charging circuit, comprising a power conversion circuit, and an information collection and signal control circuit. The power conversion circuit is coupled to a voltage source and configured to provide a charging current to a battery. The power conversion circuit comprises a plurality of switch elements, and at least two storage elements, the at least two storage elements are selectively coupled to the voltage source and the output port through the plurality of switch elements. The information collection and signal control circuit is configured to collect information from the voltage source and battery, and control the plurality of switch elements to have the power conversion circuit work under different charging modes.

A voltage converter includes a third switch element and a second energy storage element, and an energy storage circuit comprising a first switch element, a second switch element, and a first energy storage element. In a time period, the first switch element is in an on state, the second switch element and the third switch element are in an off state, and a voltage source coupled to the voltage converter charges the first energy storage element and the second energy storage element, and in a following time period, the first switch element is in an off state, the second switch element and the third switch element are in an on state, the first energy storage element and the second energy storage element discharge to a load coupled to the voltage converter.

Voltage converter, method for controlling voltage converter, and voltage conversion system

An information processing method, which is applied to a server, includes: a public message is transmitted to a first client, the public message being a message issued to the first client by the server, the public message carrying first information and a second information set including N pieces of second information, with N being a positive integer, the first information is information only allowed to be gotten by the first client and the second information is information only allowed to be gotten by a client in a sharing relationship with the first client; and a request for getting the second information is received from a second client, it is verified whether the second client is in the sharing relationship with the first client, and after the second client is determined to be in the sharing relationship with the first client, the second client is allowed to get the second information.

Information processing method, client, server and computer-readable storage medium

Embodiments of the present invention provide a battery presence detecting apparatus, including: a detection triggering module, configured to detect a charging current on a battery terminal and trigger a logic control module when the charging current is less than a preset current threshold; the logic control module, configured to turn off a battery charging system and instruct a charging and discharging balancing module to perform a charging operation and then a discharging operation on the battery terminal; and a detection determining module, configured to detect a voltage on the battery terminal when the discharging operation is performed and determine whether the voltage on the battery terminal is less than a preset detection voltage, and if the voltage on the battery terminal is less than the preset detection voltage, determine that the battery is absent, and otherwise, determine that the battery is present.

Battery presence detecting method, apparatus and charging system

Embodiments of the present invention relate to the field of electronic technologies, and provide a current-limiting circuit and apparatus to reduce costs of the current-limiting circuit and an occupied PCB board area. The circuit comprises a detecting resistor, a current-limiting resistor, a precise current unit, a power metal oxide MOS transistor, an operational amplifier OP and an input voltage end.

Current-limiting circuit and apparatus

Embodiments of the present invention provide a charging and power supplying circuit, method and application device, which relate to the field of smart charging, so as to improve efficiencies of battery charging and system power supplying. The charging and power supplying circuit includes a power supplying tributary and a charging tributary. An end of the power supplying tributary is connected to a power supply, and another end is connected to a system. An end of the charging tributary is connected to the power supply, and another end is connected to a battery. A first transistor, a second transistor, a third transistor, a first amplifier, a second amplifier, a third amplifier, a fourth amplifier, a first comparator, a second comparator, a charging controller, a logical switch, an adder and a first control module are connected to the power supplying tributary and the charging tributary.

Charging and power supplying circuit, method and application device

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Shenzhen, China

Pengfei Wang