Patent ID: 9150298
Filing Date: 2015-10-06
Classification: B63J

Abstract:
1. A power supply system for a boat comprising: a generator arranged to generate electric power in conjunction with driving of an internal combustion engine provided in a boat propulsion system; a rectifier circuit arranged to convert an alternating current output from the generator to a direct current; a main electric system arranged to supply electric power to a control system controlling the boat propulsion system, the main electric system including a first storage battery to be charged by the direct current output from the rectifier circuit; an auxiliary electric system arranged to supply electric power to auxiliary equipment provided on the boat, the auxiliary electric system including a second storage battery to be charged by the direct current output from the rectifier circuit; an actuating device arranged to actuate the boat propulsion system, the actuating device being connected to the main electric system; a detector arranged to detect an operation signal supplied to the actuating device; a deciding device arranged to decide, based on the operation signal detected by the detector, whether or not to prioritize the main electric system over the auxiliary electric system; and a restricting device arranged to restrict, when the deciding device decides to prioritize the main electric system, current supply to the auxiliary electric system before driving the actuating device to supply electric current to the main electric system in priority to the auxiliary electric system, and to drive the actuating device after the restriction of the current supply to the auxiliary electric system; wherein the actuating device includes a motor; and the operation signal is a drive signal to the motor, wherein the main electric system and the auxiliary electric system are connected in parallel with respect to each other and with respect to the rectifier circuit.