Generation and charging control device

A generation and charging control device for a vehicle is provided to improve fuel efficiency and performance of a battery by a generation amount and a charging amount of electric energy of the vehicle to correspond to an actual electric load. A generation and charging control device for a vehicle includes a smart sensor(10), an information collecting unit(11), and an ECU(Electronic Control Unit)(12). The smart sensor measures a voltage, a current, and a temperature of a battery. The information collecting unit collects information on an engine rotation speed, a traveling speed, an open value of a throttle valve, fuel cut or not, and the like. The ECU controls the generation amount of an alternator according to a traveling state by determining the traveling state(idle, acceleration, cruise, deceleration) of the vehicle with the information collected by the information collecting unit.