Abstract: A method for controlling a mobile shop includes: determining a selling situation of a plurality of items using information about an inventory status of the plurality of items and information about a well-selling time of the plurality of items; setting a charging schedule for a battery (secondary battery) based on the selling situation; and causing the mobile shop to move to EVSE (charging facility) according to the charging schedule.

Abstract: A taxi vehicle management method includes: evaluating, based on DR contribution history information, a degree of contribution to demand response for energy management by a driver of a taxi vehicle, the DR contribution history information indicating a history of contribution to the DR by the driver using a power storage device of the taxi vehicle; and determining a calculation formula of a fare of the taxi vehicle driven by the driver, using a result of evaluation of the degree of contribution by the driver. The determining the calculation formula of the fare includes determining the calculation formula of the fare such that the fare becomes lower as the degree of contribution to the DR by the driver becomes higher.

Abstract: A method for controlling a cooling system for an internal combustion engine having first and second cooling fans is provided, comprising operating the first cooling fan at a first rotational frequency which is greater than a combustion frequency of the internal combustion engine and operating the second cooling fan at a second rotational frequency which is less than the combustive vibration frequency of the internal combustion engine. Since the rotational frequencies of the first and second cooling fans are different from the combustion frequency of the internal combustion engine, the resonance between the rotational vibration of the cooling fans and the combustive vibration of the internal combustion engine may be prevented. Also, since the rotational frequencies of the first and second cooling fans are different from each other so that the resonance between their rotational vibrations may be prevented.

Abstract: A method for controlling a cooling system for an internal combustion engine having first and second cooling fans is provided, comprising operating the first cooling fan at a first rotational frequency which is greater than a combustion frequency of the internal combustion engine and operating the second cooling fan at a second rotational frequency which is less than the combustive vibration frequency of the internal combustion engine. Since the rotational frequencies of the first and second cooling fans are different from the combustion frequency of the internal combustion engine, the resonance between the rotational vibration of the cooling fans and the combustive vibration of the internal combustion engine may be prevented. Also, since the rotational frequencies of the first and second cooling fans are different from each other so that the resonance between their rotational vibrations may be prevented.