Cordless vacuum cleaner including plurality of batteries and method for controlling same

One or more non-transitory computer-readable storage media storing one or more computer programs including computer-executable instructions that, when executed by one or more processors individually or collectively, cause a cordless vacuum cleaner comprising a main body, a suction fan, a suction motor arranged inside the main body and configured to rotate the suction fan, a plurality of batteries charged and discharged through a charging circuit, and the one or more processors communicatively coupled to the suction motor, the charging circuit, the plurality of batteries, and the memory, to perform operations, the operations comprising:

• receiving, by the processor, state information about each of the plurality of batteries included in the cordless vacuum cleaner,
• selecting, based on the state information about each of the plurality of batteries, a battery having a longest life of the plurality of batteries,
• controlling, by the one or more processors, the selected battery to discharge for operating the suction motor, and
• in response to the controlling of the selected battery for operating the suction motor, controlling to suspend discharging of batteries of the plurality of batteries other than the selected battery,
• wherein the state information comprises a battery discharge amount and a life state of each of the plurality of batteries.

A cordless vacuum cleaner comprising:

• a main body;
• a suction fan;
• a suction motor arranged inside the main body and configured to rotate the suction fan;
• a plurality of batteries charged and discharged through a charging circuit;
• memory storing one or more computer programs;
• and
• one or more processors communicatively coupled to the suction motor, the charging circuit, the plurality of batteries, and the memory,
• wherein the one or more computer programs include computer-executable instructions that, when executed by the one or more processors individually or collectively, cause the cordless vacuum cleaner to:
• select, based on state information about each of the plurality of batteries, a battery having a longest life among the plurality of batteries,
• control the selected battery to discharge for operating the suction motor, and
• in response to the controlling of the selected battery for operating the suction motor, control to suspend discharging of batteries of the plurality of batteries other than the selected battery, and
• wherein the state information comprises a battery discharge amount and a life state of each of the plurality of batteries.