Wireless Charger for Wearable Device and Wireless Charging System

A wireless charger for a wearable device, comprising:

• a charging base, comprising a first housing and a transmitting coil disposed in the first housing, wherein the transmitting coil is configured to convert electric energy of an alternating current voltage signal into electromagnetic energy for wireless transmission;
• a connector;
• a cable, wherein the charging base is connected to the connector through the cable;
• a boost circuit disposed outside the first housing, wherein the boost circuit is configured to boost a direct current voltage signal input through the connector, to generate a boosted direct-current voltage signal;
• and
• an inverter circuit, disposed between the boost circuit and the transmitting coil, wherein the inverter circuit is configured to convert the boosted direct-current voltage signal into the alternating current voltage signal, and transmit the alternating current voltage signal to the transmitting coil.

A wireless charging system, comprising:

• an electronic device;
• and
• a wireless charger configured to be connected to a direct current power supply by using a connector, and configured to convert electric energy of the direct current power supply into an electromagnetic wave;
• and
• wherein the electronic device is configured to receive the electromagnetic wave and is charged by using energy of the electromagnetic wave;
• and
• wherein the wireless charger comprises:
• a charging base, comprising a first housing and a transmitting coil disposed in the first housing, wherein the transmitting coil is configured to convert electric energy of an alternating current voltage signal into the electromagnetic wave;
• a connector;
• a cable, wherein the charging base is connected to the connector through the cable;
• a boost circuit disposed outside the first housing, wherein the boost circuit is configured to boost a direct current voltage signal input through the connector, to generate a boosted direct-current voltage signal;
• and
• an inverter circuit, disposed between the boost circuit and the transmitting coil, wherein the inverter circuit is configured to convert the boosted direct-current voltage signal into an alternating current voltage signal, and transmit the alternating current voltage signal to the transmitting coil.