Electronic device for harvesting power from at least one power source and method for operating the same

An electronic device, comprising:

• a plurality of energy converting modules, each of the energy converting modules configured to generate a respective pieces of electrical energy;
• at least one sensor configured to sense respective magnitudes of the pieces of electrical energy generated by the each of the energy converting modules;
• at least one converter configured to convert voltages of the pieces of electrical energy;
• first switches, each of the first switches configured to selectively connect one of the energy converting modules to one of the at least one converter;
• a summating circuit configured to summate the pieces of electrical energy output from the at least one converter;
• a second switch configured to connect the summating circuit to a battery;
• and
• at least one processor configured to:
• receive the respective magnitudes of the pieces of electrical energy from the at least on sensor,
• identify whether each of the respective magnitudes of the pieces of electrical energy meets a respective one of a plurality of thresholds, each of the plurality of thresholds corresponding to a respective type of a respective energy converting module, and
• control an on/off operation of the each of the first switches based on a result of the identification, and
• in response to the summated electric energy being larger than a preset value, turn off the second switch to prevent the summated electric energy from being applied to the battery.