Abstract: The present disclosure provides a device to be charged and a charging method. The device to be charged includes: a charging interface; a first charging circuit, coupled with the charging interface, configured to receive an output voltage and an output current of an adapter via the charging interface and to directly apply the output voltage and the output current of the adapter to both ends of a plurality of battery cells coupled in series in the device to be charged, so as to perform a direct charging on the plurality of battery cells. With the present disclosure, heat generated in the charging process can be reduced while ensuring the charging speed.

Abstract: The present disclosure discloses a charging system, a lightning protection method for a terminal during charging and a power adapter. The charging system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a second rectifier, a first charging interface, a second voltage sampling circuit, and a control unit. The control unit adjusts a duty ratio of a control signal such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement, and controls the switch unit to switch on for a first predetermined time period for discharging when the voltage value sampled is greater than a first predetermined voltage value. The terminal includes a second charging interface and a battery. When the second charging interface is coupled to the first charging interface, the second charging interface applies the third voltage to the battery.

Abstract: A charging system, a charging method, and a power adapter are provided. The power adapter includes a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charging interface, a sampling unit, and a control unit. The control unit is configured to output a control signal to the switch unit, and adjust a duty ratio of the control signal based on a voltage sampling value and/or current sampling value sampled by the sampling unit, in which a voltage of a third pulsating waveform output from the second rectification unit meets the charging requirements.

Abstract: The present disclosure discloses a charging system, a charging method, and a power adapter. The charging system includes a battery, a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or voltage sampling value sampled by the sampling unit, such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement of the battery.

Abstract: A charging system, a charging method, and a power adapter are provided. The power adapter includes a first rectification unit, a switch unit, a transformer, a second rectification unit, a first charging interface, a sampling unit, a control unit, a second charging interface, and a battery coupled to the second charging interface. The control unit is configured to output a control signal to the switch unit, and adjust a duty ratio of the control signal based on a voltage sampling value and/or current sampling value sampled by the sampling unit, in which a voltage of a third pulsating waveform meets charging requirements. When the second charging interface is coupled to the first charging interface, the second charging interface applies the voltage of the third pulsating waveform to the battery, in which the voltage of the pulsating waveform output from the power adapter can be directly applied to the battery.

Abstract: The present disclosure discloses a charging device and a terminal. The device includes: a charging receiving terminal configured to receive a first alternating current; a first rectifier configured to rectify the first alternating current and output a first voltage with a first pulsating waveform, a switch unit configured to modulate the first voltage according to a control signal to obtain a modulated first voltage, a transformer configured to output a plurality of voltages with pulsating waveforms according to the modulated first voltage, and a synthesizing unit configured to synthesize the plurality of voltages to output a second alternating current; and a central control module configured to output the control signal to the switch unit so as to adjust voltage and/or current of the second alternating current in response to a charging requirement of the battery.

Abstract: The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier unit, a switch unit, a transformer, a second rectifier unit, a sampling unit, a control unit and a first isolation unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current value and/or voltage value sampled by the sampling unit, such that a third voltage with a third pulsating waveform outputted by the second rectifier unit meets a charging requirement. The terminal includes a battery. When the terminal is coupled to the power adapter, the third voltage is applied to the battery.

Abstract: The present disclosure discloses a charging system and method, and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a compositing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or a voltage sampling value, such that a second alternating current outputted by the compositing unit meets a charging requirement. The terminal includes a battery.

Abstract: The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit, a control unit and a first isolation unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current value and/or voltage value sampled by the sampling unit, such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement. The terminal includes a battery. When the terminal is coupled to the power adapter, the third voltage is applied to the battery.

Abstract: The present disclosure discloses a charging device, a charging method, a power adapter and a terminal. The charging device includes a charging receiving terminal, a voltage adjusting circuit and a central control module. The charging receiving terminal is configured to receive an alternating current. The voltage adjusting circuit includes a first rectifier, a switch unit, a transformer and a second rectifier. The first rectifier is configured to rectify the alternating current and output a first voltage. The switch unit is configured to modulate the first voltage to output a modulated first voltage. The transformer is configured to output a second voltage according to the modulated first voltage. The second rectifier is configured to rectify the second voltage to output a third voltage. The voltage adjusting circuit applies the third voltage to a battery directly.

Abstract: In a charging method of controlling output voltages, a controller acquires first mapping relation that is a one-to-one mapping relation between at least two adjustment strategies and at least two duty cycles. Each of the adjustment strategies comprises indication information of an adjustment direction of an output voltage of a power converter. The controller determines a first adjustment strategy. The controller generates a pulse width modulation (PWM) signal based on the first adjustment strategy and the first mapping relation. The duty cycle of the PWM signal is one of the at least two duty cycles indicated by the first mapping relation and corresponds to the first adjustment strategy. The controller transmits the PWM signal such that the adjustment direction of the output voltage of the power converter corresponds to the first adjustment strategy.

Abstract: The present disclosure discloses a charging system, a charging method, and a power adapter. The charging system includes a battery, a first rectifier, a switch unit, a transformer, a second rectifier, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current value and/or voltage value sampled by the sampling unit, such that a third voltage with a third pulsating waveform outputted by the second rectifier meets a charging requirement. The third voltage is applied to the battery.

Abstract: A device to be charged, a charging method, and a charging control circuit are provided. The device to be charged includes multiple cells coupled in series and a conversion circuit. The conversion circuit is configured to receive input voltage from a power supply device, convert the input voltage into charging voltage for the multiple cells and into power supply voltage for a system of the device to be charged, charge the multiple cells according to the charging voltage, and supply power to the system of the device to be charged according to the power supply voltage.

Abstract: The present disclosure discloses a charging system, a lightning protection method for a terminal during charging and a power adapter. The charging system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a second rectifier, a first charging interface, a second voltage sampling circuit, and a control unit. The control unit adjusts a duty ratio of a control signal such that a third voltage with a third ripple waveform outputted by the second rectifier meets a charging requirement, and controls the switch unit to switch on for a first predetermined time period for discharging when the voltage value sampled is greater than a first predetermined voltage value. The terminal includes a second charging interface and a battery. When the second charging interface is coupled to the first charging interface, the second charging interface applies the third voltage to the battery.

Abstract: A battery management circuit and a battery management method, a balancing circuit and a balancing method, and a device to be charged are provided. The battery management circuit includes a first charging channel, a balancing circuit, and a communication circuit. Through the first charging channel, direct charging is conducted on a battery including a first cell and a second cell coupled in series. The communication circuit is configured to communicate with a power supply device, when the power supply device charges the battery through the first charging channel. The balancing circuit is a balancing circuit based on an RLC series circuit and configured to balance voltage of the first cell and voltage of the second cell.

Abstract: Battery management circuits include a first charging channel, a Cuk circuit, and a communication control circuit. A battery is charged through the first charging channel based on charging voltage and/or charging current provided by a power supply device. The battery includes a first cell and a second cell coupled in series. The communication control circuit is configured to communicate with the power supply device, to make magnitude of the charging voltage and/or charging current provided by the power supply device match a present charging stage of the battery, and the communication control circuit is further configured to send a drive signal to the Cuk circuit to drive the Cuk circuit to work, to make energy of the first cell and the second cell be transferred through the Cuk circuit to balance voltage of the first cell and voltage of the second cell.

Abstract: The present disclosure discloses a charging device, a charging method, a power adapter and a terminal. The charging device includes a charging receiving terminal, a voltage adjusting circuit and a central control module. The charging receiving terminal is configured to receive an alternating current. The voltage adjusting circuit includes a first rectifier, a switch unit, a transformer and a second rectifier. The first rectifier is configured to rectify the alternating current and output a first voltage. The switch unit is configured to modulate the first voltage to output a modulated first voltage. The transformer is configured to output a second voltage according to the modulated first voltage. The second rectifier is configured to rectify the second voltage to output a third voltage. The voltage adjusting circuit applies the third voltage to a battery directly.

Abstract: The present disclosure discloses a charging system and method, and a power adapter. The system includes a power adapter and a terminal. The power adapter includes a first rectifier, a switch unit, a transformer, a synthesizing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a current sampling value and/or a voltage sampling value, such that a second alternating current outputted by the synthesizing unit meets a charging requirement. The terminal includes a battery.

Abstract: The present disclosure discloses a charging system, a charging method and a power adapter. The system includes a battery, a first rectifier, a switch unit, a transformer, a compositing unit, a sampling unit, and a control unit. The control unit outputs a control signal to the switch unit, and adjusts a duty ratio of the control signal according to a voltage sampling value and/or a current sampling value obtained by primary sampling of the sampling unit, such that a second alternating current outputted by the compositing unit meets a charging requirement. The second alternating current is applied to the battery.

Abstract: The present disclosure discloses a charging device and a terminal The device includes: a charging receiving terminal configured to receive a first alternating current; a first rectifier configured to rectify the first alternating current and output a first voltage with a first pulsating waveform, a switch unit configured to modulate the first voltage according to a control signal to obtain a modulated first voltage, a transformer configured to output a plurality of voltages with pulsating waveforms according to the modulated first voltage, and a synthesizing unit configured to synthesize the plurality of voltages to output a second alternating current; and a central control module configured to output the control signal to the switch unit so as to adjust voltage and/or current of the second alternating current in response to a charging requirement of the battery.