Abstract: Provided are a battery quick charging method, a charging apparatus, and a device to-be-charged. The battery quick charging method includes the following. State parameters of a battery of a device to-be-charged are acquired, where the state parameters of the battery include a present temperature of the battery. A charging cut-off voltage corresponding to the present temperature is selected from a target parameter mapping relationship, where the charging cut-off voltage is higher than a rated voltage of the battery. Constant-current charging is performed on the battery until a voltage of the battery reaches the charging cut-off voltage and then performing of the constant-current charging on the battery is stopped.

Abstract: Provided are methods and systems for testing time parameters of an adaptor and systems. The method includes the following. After a testing system is coupled with an adaptor, a clock signal is received from the adaptor, where the clock signal is indicative of the transmission time of the instruction. A first valid interrupt of the clock signal, a square wave corresponding to the first valid interrupt, and a next valid interrupt of the first valid interrupt are acquired. A first falling edge and a first rising edge of the first valid interrupt, a second falling edge of the square wave, and a third falling edge of the next valid interrupt are acquired. A test result time parameters of the adaptor is generated according to the first falling edge, the first rising edge, the second falling edge, and the third falling edge.

Abstract: Provided are a method and device for testing an adaptor, and a storage medium. The method is applicable to the device. The method includes the following. A test signal is sent to the adaptor. Detect a first voltage, where the first voltage is outputted in a preset first duration by the adaptor according to the test signal. A working state of the adaptor is determined according to the first voltage.

Abstract: Embodiments of the present disclosure provide a test system, a test method, and a test board for a charging device. The test board includes: a connecting circuit, configured to be connected to a charging device and a load module respectively, to form a test loop between the charging device and the load module through the connecting circuit; a first communication module, configured to communicate with an upper computer; a second communication module, configured to communicate with the charging device; and a control module, connected to the first communication module and the second communication module respectively, and configured to receive command information sent by the upper computer through the first communication module, and generate a test command according to the command information, to cause the test board or the charging device to execute the test command.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A power supply circuit includes a rectifier circuit, configured to convert an alternating current inputted to the rectifier circuit into a direct current; a primary power supply conversion circuit having an input end connected with an output end of the rectifier circuit, configured to convert an input voltage of the primary power supply conversion circuit which is out of a preset voltage range into an output voltage of the primary power supply conversion circuit within the preset voltage range; and a secondary power supply conversion circuit having an input end connected with an output end of the primary power supply conversion circuit, configured to convert a direct current voltage outputted by the primary power supply conversion circuit into a target direct current voltage. A lower limit of the preset voltage range is greater than a minimum working voltage of the secondary power supply conversion circuit.

Abstract: Provided are a power supply conversion device and a charging control method. The device includes: a transformer; a first rectifier circuit connected to a primary winding of the transformer used for converting a received alternating current into a first direct current, a voltage value of the first direct current being a first direct-current voltage, and the transformer used for converting the first direct-current voltage into a second direct-current voltage; a voltage converter connected to a secondary winding of the transformer and used for converting the second direct-current voltage to output a constant direct-current voltage or a pulsating direct-current voltage; and a controller connected to the first rectifier circuit and the voltage converter and used for controlling the voltage converter to selectably output the constant direct-current voltage or the pulsating direct-current voltage according to a desired charging mode of a device to be charged connected to the power supply conversion device.

Abstract: A power supply conversion circuit and a charging device are provided. The power supply conversion circuit includes: a first voltage conversion circuit that converts a voltage when the voltage exceeds a preset voltage range and outputs the converted voltage; a post-stage voltage conversion circuit that receives the converted voltage and converts the converted voltage into a target voltage for outputting; and a signal feedback circuit that feeds back a signal to the first voltage conversion circuit according to the target voltage, so that the first voltage conversion circuit is synchronized with the post-stage voltage conversion circuit.

Abstract: Provided are a power supply conversion circuit and a power supply conversion method. The power supply 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.

Abstract: The present disclosure provides a charging system and method and a power adapter. The system includes: a battery; a first rectification unit, configured to output a voltage with a first pulsating waveform; a switch unit, configured to modulate the voltage with the first pulsating waveform; a transformer, configured to output a voltage with a second pulsating waveform according to the modulated voltage; a second rectification unit, configured to rectify the voltage with the second pulsating waveform to output a voltage with a third pulsating waveform; and a control unit, configured to output the control signal to the switch unit to decrease a length of a valley of the voltage with the third pulsating waveform such that a peak value of a voltage of the battery is sampled.

Abstract: Embodiments of the present disclosure provide a charging adjustment method, a terminal and a computer storage medium. The method includes: detecting a real-time charging current when performing charging to a battery; determining whether to perform charging adjustment according to the real-time charging current and a preset cut-off current; obtaining a target voltage when determining to perform the charging adjustment; and performing charging to the battery according to the target voltage.

Abstract: Provided are a charging circuit for an electronic device, a charging method, an electronic device, and a storage medium. The charging circuit includes a control module, a charge pump, and a battery assembly. The control module is configured to generate a first control signal upon determining that a power adaptor connected is an adaptor for direct charging with high voltage. The charge pump is configured to, upon receiving the first control signal, directly apply a charging voltage to the battery assembly for direct charging, where the charging voltage is applied to the electronic device by the power adaptor.

Abstract: Embodiments of the present disclosure disclose a charging method, a terminal and a computer storage medium. The charging method includes: detecting a battery power and a power consumption parameter before turning on a fast charging function; determining an estimated charging time according to the battery power and the power consumption parameter; determining whether an abnormal charging occurs according to the estimated charging time after turning on the fast charging function; and turning off the fast charging function when determining that the abnormal charging occurs.

Abstract: Provided are a control circuit and a control method for a switch transistor. The control circuit includes: a control unit configured to output a control signal; and a microwave unit having a transmitting terminal connected to the control unit and a receiving terminal connected to at least one switch transistor. The transmitting terminal is configured to receive the control signal and convert the control signal into a microwave signal. The receiving terminal is configured to convert the microwave signal into the control signal to control turn-on or turn-off of the at least one switch transistor. The control circuit may turn on or turn off the switch transistor quickly without causing crosstalk in the circuit, even if dead time of the control signal is short.

Abstract: An adapter and a control method are provided. The 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.

Abstract: Provided are a power supply circuit, a power supply device and a control method. The power supply circuit includes a primary rectifier unit, a modulation unit, a transformer, a secondary rectifier and filtering unit, a current feedback unit, and a control unit. The power supply circuit removes a liquid electrolytic capacitor at a primary side. Moreover, the control unit may determine a type of a voltage of input alternating current, and set a current limit value in the current feedback unit according to the type of the voltage of the alternating current.

Abstract: A power supply device and a charging control method are provided. The power supply device includes a first-stage conversion circuit and a second-stage conversion circuit; the first-stage conversion circuit is used for converting a received alternating current voltage into a pulsating direct current voltage, the voltage value of the pulsating direct current voltage being greater than the voltage value of the alternating current voltage; the second-stage conversion circuit is connected to the first-stage conversion circuit, and used for converting the pulsating direct current voltage to output a constant direct current voltage.