Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Powerland Technology Inc.

Silergy Semiconductor Technology (hangzhou) Ltd

Tasly Holding Group Co., Ltd.

Jiangsu Tasly Diyi Pharmaceutical Co., Ltd.

Jialiang Zhang

Chen Tian

Shiming Wan

Shebiao Chen

Jun Zhang

Jiada Li

Kewei Wu

Wei Chen

Fuchun Liao

Yuanxiang Hu

Shangbo Lin

Liangcai Peng

Wenqiang Cheng

Fengshuo Liu

Dashuai Huang

Biao Chen

Senlong Jiang

Feiwu Shuai

Hongbin Xie

Chih-wei Chiu

Chen Zhao

Wei Feng Chen

Tao Wang

Zhihua Hu

Jie Wu

Bo Yang

Jian Deng

Jun Yang

Qiukai Huang

Wang Zhang

Yunxiang Liu

Dongsun Yang

Jingpeng Zhu

Xinfeng Chen

Nianfeng Liu

Ming Xu

Huihuang Zhou

Xingwei Yuan

Zhaofeng Wang

Wei Liu

Jianming Chen

Baoan Gao

Nan Luo

Feng Ji

Yao Zhou

Weiwei Lu

Julu Sun

Juanjuan Sun

Chih-Wei Chiu

Hui Zhang

Yong Sun

Yingying Zhang

Peng Gu

Jing Sun

Qiuxia Yang

Li Deng

A power supply device includes a transformer, a first rectifier, a voltage conversion module, and a control unit. The first rectifier is connected to a primary winding of the transformer, converts a received alternating-current voltage to a first direct-current voltage. The transformer is configured to convert the first direct-current voltage to a second direct-current voltage. The voltage conversion module is connected to the secondary winding of the transformer and configured to convert the second direct-current voltage to output a third direct-current voltage. The control unit, connected to the voltage conversion module, controls the voltage conversion module to adjust an output voltage or an output current of the power supply device.

Power supply device and charging control method

A power supply device includes a transformer, a first rectifier, a first voltage conversion module, a second voltage conversion module, and a control unit. The first rectifier, connected to a primary winding of the transformer, converts a received alternating-current voltage to a first direct-current voltage. The first voltage conversion module is connected to the first secondary winding of the transformer. The second voltage conversion module is connected to the second secondary winding of the transformer. The control unit, connected to the first voltage conversion module and second voltage conversion module, controls the first voltage conversion module or second voltage conversion module to adjust an output voltage or an output current of the power supply device.

Disclosed in the embodiments of the present application is a power conversion circuit, comprising a direct current conversion circuit, a pulse width control circuit, and a transformer. The transformer comprises a primary transformer coil and a secondary transformer coil. The direct current conversion circuit is connected to the primary transformer coil, and is used for adjusting an initial voltage inputted to the direct current conversion circuit to a target voltage. The pulse width control circuit is connected to the primary transformer coil, and is used for generating a pulse square wave on the basis of the target voltage. The primary transformer coil is coupled with the secondary transformer coil. The primary transformer coil is used for generating an electromagnetic filed according to the pulse square wave, and coupling the electromagnetic field to the secondary transformer coil so that the secondary transformer coil generates an output voltage.

Power supply conversion circuit and power supply conversion method

A power supply, a power supplying method, and a computer-readable storage medium are provided. The power supply includes a rectifier circuit and a valley-fill circuit. The rectifier circuit is used for voltage transformation of an input AC voltage to obtain a first pulsating DC voltage. The valley-fill circuit includes at least one energy storage capacitor and is used for storing energy through the at least one energy storage capacitor when the first pulsating DC voltage output by the rectifier circuit is in a first preset range and providing energy through the at least one energy storage capacitor when the first pulsating DC voltage output by the rectifier circuit is lower than a preset threshold, thereby to increase the valley voltage of the first pulsating DC voltage.

Power supply, power supplying method and computer storage medium

A power supply device includes: an input rectifier circuit configured to convert a received alternating-current power into a first pulsating direct-current voltage; a first-stage conversion circuit connected with the input rectifier circuit and configured to convert the first pulsating direct-current voltage into a second pulsating direct-current voltage; a valley-fill circuit connected with the first-stage conversion circuit and configured to supply, in response to a voltage value of the second pulsating direct-current voltage being lower than a voltage threshold, electrical power to thereby enable the voltage value of the second pulsating direct-current voltage to be greater than or equal to the voltage threshold; and a second-stage conversion circuit connected with the first-stage conversion circuit and configured to convert the second pulsating direct-current voltage into a constant direct-current voltage and output the constant direct-current voltage.

Power supply device, circuit control method, and power supply system

Provided are an adapter and a charging method. The adapter includes: at least one filter capacitor () having a capacitance smaller than a predetermined threshold and configured to filter a rectified alternating current to obtain a pulsating direct current; and a voltage transformation module () configured to transform the pulsating direct current to obtain a voltage and a current for charging a device to be charged. The adapter for charging a battery is provided, the volume of the adapter can be reduced and the miniaturization of the volume of the adapter can be realized.

Adapter and charging method

Provided by the present disclosure are a power supply circuit and a charging device. The power supply circuit comprises a pulse transformer circuit and a first power supply conversion circuit. The pulse transformer circuit comprises a pulse transformer and a switch control circuit; a primary winding of the pulse transformer is connected to a power supply and is connected to the switch control circuit, and the switch control circuit is used to modulate the voltage on the primary winding into a pulse voltage; and the input terminal of the first power supply conversion circuit is connected to a secondary winding of the pulse transformer, and is used to transform the voltage on the secondary winding of the pulse transformer into a first preset voltage range when the voltage outputted by the secondary winding exceeds the first preset voltage range, and then output the voltage.

Power supply circuit and charging device

The voltage conversion circuit includes a first direct-current conversion circuit connected to an electric load, a secondary transformer coil connected to the first direct-current conversion circuit, and a primary transformer coil coupled to the secondary transformer coil. The primary transformer coil is configured to generate, based on an initial voltage inputted to the primary transformer coil, an electromagnetic field and couple the electromagnetic field to the secondary transformer coil. The secondary transformer coil is configured to generate an induced current by virtue of the electromagnetic field, generate a secondary output voltage based on the induced current, and transmit the secondary output voltage to the first direct-current conversion circuit. The first direct-current conversion circuit is configured to adjust, based on a predetermined demand voltage of the electric load, the secondary output voltage to obtain a target voltage.

Voltage conversion circuit and voltage conversion method

A step-down circuit, an electronic device, and a step-down method are disclosed. The step-down circuit includes a positive input terminal and a negative input terminal for receiving an input voltage; and a positive output terminal and a negative output terminal for outputting a target voltage. The negative input terminal and the negative output terminal are grounded together. The step-down circuit also includes a switch circuit, a rectifier circuit, an isolation circuit, and a control unit for outputting control signals to control for turning on or off a switch in the switch circuit and for turning on or off a switch in the rectifier circuit, allowing the input voltage to sequentially pass through the switch in the switch circuit, a capacitor in the isolation circuit, and the switch in the rectifier circuit to obtain a target voltage.

Step-down circuit, electronic device, and step-down method

An adapter and a control method are provided. The adapter includes a transformer, at least one first transistor, a control unit, and a first microwave unit. The at least one first transistor is connected to a primary side of the transformer, and is configured to perform a chopping modulation on a voltage input to the transformer. The control unit is configured to output a first control signal. The first microwave unit includes a first transmitting terminal and a first receiving terminal. The first transmitting terminal is configured to convert the first control signal into a first microwave signal and transmit it to the first receiving terminal of the first microwave unit. The first receiving terminal is configured to convert the first microwave signal into the first control signal to control the at least one first transistor to be turned on or off.

Adapter and control method

Provided are a charger and a control method. The charger includes: a transformer; at least one primary-side switch tube for carrying out chopping modulation on a voltage input into the transformer; a first control unit; a second control unit for generating feedback information on the basis of a voltage and/or current information output from an output end of the charger; and a first microwave unit respectively connected to the first control unit and the second control unit, and used for transmitting the feedback information to the first control unit. The first control unit is used for outputting a first control signal according to the feedback information, so as to control the turning on or the turning off of the at least one primary-side switch tube.

Charger and control method thereof

A power supply device, includes a rectifier circuit configured to perform rectification on alternating-current power to obtain a first pulsating direct-current voltage, a first-stage conversion circuit connected to the rectifier circuit and configured to perform isolation conversion on the first pulsating direct-current voltage to thereby obtain a second pulsating direct-current voltage; a second-stage conversion circuit connected to the first-stage conversion circuit and configured to convert the second pulsating direct-current voltage into a stable direct-current voltage; and a valley-fill circuit connected to the rectifier circuit and the first-stage conversion circuit individually, wherein the valley-fill circuit is configured to supply, in response to a voltage value of the first pulsating direct-current being less than a first voltage threshold, electrical power to an input of the first-stage conversion circuit to thereby increase a valley voltage of the first pulsating direct-current voltage.

Power source providing apparatus, and charging method and system

Provided are a to-be-charged device, a wireless charging device, and a wireless charging method. The to-be-charged device includes a battery, at least two wireless receiver circuits, and a control circuit. Each of the at least two wireless receiver circuits is coupled to the battery, and is configured to receive an electromagnetic signal transmitted by a wireless charging device, and convert the electromagnetic signal into a charging current for charging the battery. The control circuit is coupled with each of the at least two wireless receiver circuits, and is configured to, in various charging stages or in different charging modes, control at least one of the at least two wireless receiver circuits to charge the battery.

To-be-charged device, wireless charging device, and wireless charging method

The present disclosure discloses an apparatus and a method for power supply and an electronic device. The apparatus for power supply includes a first battery and a second battery connected in series, a first voltage step-down module and a control module. The first battery is a silicon negative lithium ion battery. The control module is configured to control the voltage step-down module to step down the voltage of the first battery and the second battery to supply power based on power supply demands, in a power supply process.

Apparatus and method for power supply and electronic device

A power supply circuit, a charging-discharging circuit and an intelligent terminal are provided. The power supply circuit includes a lithium-ion battery unit having a silicon anode and a lithium-ion battery unit having a carbon anode. The lithium-ion battery unit having the silicon anode is connected in series with the lithium-ion battery unit having the silicon anode, cooperatively supplying power to the to-be-powered unit. A battery system of the intelligent terminal is formed by the lithium-ion battery unit having the silicon anode and the lithium-ion battery unit having the carbon anode and supplies power to the to-be-powered unit. Therefore, constant voltage performance of the lithium-ion battery unit having the carbon anode is utilized effectively, further large capacity and large power margin at low supply voltage of the lithium-ion battery unit having the silicon anode is utilized effectively.

Power supply circuit, charging-discharging circuit and intelligent terminal

Growing community of inventors

Dongguan, China

Jialiang Zhang