Electronic device for performing bottom-up power line communication and method for operating same

An operation method of an electronic device comprising a main body and a kit connected to the main body, the operation method comprising:

• controlling a switching frequency of an inverter included in the kit;
• and
• transmitting information from the kit to the main body based on control of the switching frequency,
• wherein the main body comprises a battery, a first motor, an electric wire connected to the battery, and a first controller connected to the electric wire,
• the kit comprises a second motor supplied with power through the electric wire, the inverter connected to the second motor, and a second controller connected to the electric wire and configured to control driving of the inverter, and
• a current associated with the second motor is greater than zero in a section in which transmission of the information is performed through the control of the switching frequency.