A wireless charging device, a wireless charging method, and a charging system

Abstract

The application provides a wireless charging device, a wireless charging method and a charging system. The wireless charging device comprises a controller, a voltage converter and a coil. The voltage converter is connected with the controller and the coil respectively. The controller is used for controlling the voltage converter to output an alternating voltage with a first parameter to the coil in a first transmission period of a ping stage. The controller is used for controlling the voltage converter to output an alternating voltage with a second parameter to the coil in a second transmission period of the ping stage. The energy emitted by the wireless charging device is different, so that even if a terminal device to be charged cannot enter a charging stage based on the energy emitted in the first transmission period, the terminal device to be charged can enter the charging stage based on the energy emitted in the second transmission period. Multiple energy options are provided for the terminal device to be charged to smoothly enter the charging stage, the charging freedom is improved, and the normal operation of the wireless charging is ensured.

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