Abstract: A charging apparatus and an electronic device are provided. The charging apparatus includes a control module, a first switch, at least one second switch, and a plurality of capacitors, where the plurality of capacitors are connected in series; grounding between two adjacent capacitors in the plurality of capacitors is implemented through one second switch; in the plurality of capacitors, the first one of the plurality of capacitors is connected to an input voltage, and the last one of the plurality of capacitors is grounded through the first switch; and the control module controls, through the first switch and the at least one second switch based on the input voltage, the number of capacitors that are turned on in series, where the number of capacitors that are turned on in series is positively related to the input voltage.

Abstract: A charger is provided. The charger includes: a power input end, a power output end, a switching module, and a transformer. A primary side of the transformer is provided with a power input module. The power input module is connected to the power input end through the switching module. A secondary-side winding of the transformer is connected to the power output end. The switching module can be switched among a first conducting state, a second conducting state, and a third conducting state. When an output voltage corresponding to the power output end is in the range of a first voltage V1 to a second voltage V2, the switching module is switched between the first conducting state and the second conducting state, and the power input module operates in a resonance mode.

Abstract: A charger is provided. The charger includes: a first power input end, a second power input end, a power output end, a switching module, and a transformer. The switching module is separately connected to the first power input end and the second power input end. A primary side of the transformer is provided with a first resonant unit connected to the switching module. A secondary-side winding of the transformer is connected to the power output end. The switching module is capable of switching between a first on state and a second on state. When the switching module is in the first on state, input power at the first power input end is coupled to the secondary-side winding through the first resonant unit and is output through the power output end.

Abstract: The present disclosure provides a mobile terminal, a charging device and a charging method thereof. A first communication module is disposed in the mobile terminal and a second communication module is disposed in the charging device to perform match verification. After the match verification is successful, the mobile terminal may transmit a charging request including a charging parameter required by the mobile terminal to the charging device, and then receive first energy that matches the charging parameter and is transmitted by the charging device. After the mobile terminal converts the first energy into a direct current voltage for charging, the mobile terminal can directly use the direct current voltage corresponding to the first energy for charging.

Abstract: The present disclosure provides a mobile terminal, a charging device and a charging method thereof. A first communication module is disposed in the mobile terminal and a second communication module is disposed in the charging device to perform match verification. After the match verification is successful, the mobile terminal may transmit a charging request including a charging parameter required by the mobile terminal to the charging device, and then receive first energy that matches the charging parameter and is transmitted by the charging device. After the mobile terminal converts the first energy into a direct current voltage for charging, the mobile terminal can directly use the direct current voltage corresponding to the first energy for charging.