Cooking device having multi-power structure

A cooking device comprising:

• a controller including at least one processor and a memory, the controller configured to, after being activated, control an operation of the cooking device;
• a communication unit including a communication interface circuit, the communication unit configured to, after being activated, transmit data to a wireless power transmission device;
• a pickup coil configured to wirelessly receive power from a transmitting coil of the wireless power transmission device;
• a rectification circuit including a plurality of rectifying devices, the rectification circuit configured to rectify an alternating current (AC) of the pickup coil corresponding to the power received by the pickup coil, to produce a direct current (DC);
• a first capacitor configured to be charged in accordance with the DC current produced by the rectification circuit to activate the communication unit before an activation of the controller;
• and
• a second capacitor, having a capacitance greater than a capacitance of the first capacitor, configured to be charged in accordance with the DC current produced by the rectification circuit to activate the controller,
• wherein the communication unit transmits the data to the wireless power transmission device before the activation of the controller.