Vessel power supply system
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorMasaki Maejima
Life of this patent
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Abstract
A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, includes a first battery that supplies power to the propulsion device, a second battery that supplies power to accessories of the vessel, a first open circuit voltage sensor that detects an open circuit voltage of the first battery, a second open circuit voltage sensor that detects an open circuit voltage of the second battery, and a switch that is turned on/off to open and close a current path between the first battery and the second battery.
Claims12
A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, the system comprising:
- a first battery that supplies power to the propulsion device;
- a second battery that supplies power to accessories of the vessel;
- a first open circuit voltage sensor that detects an open circuit voltage of the first battery;
- a second open circuit voltage sensor that detects an open circuit voltage of the second battery;
- a first switch that is turned on/off to open and close a current path between the first battery and the second battery;
- a first storage that stores a first open circuit voltage value detected by the first open circuit voltage sensor when the first switch is in an off state;
- a second storage that stores a second open circuit voltage value detected by the second open circuit voltage sensor when the first switch is in an off state;
- a first battery remaining level calculator that calculates a first battery remaining level of the first battery according to the first open circuit voltage value stored in the first storage and an integrated value of a current flowing into/out of the first battery;
- and
- a second battery remaining level calculator that calculates a second battery remaining level of the second battery according to the second open circuit voltage value stored in the second storage and an integrated value of a current flowing into/out of the second battery.
A vessel power supply system for a vessel including a propulsion device that includes an engine and a generator driven by the engine to generate electricity, the system comprising:
- a first battery that supplies power to the propulsion device;
- a second battery that supplies power to accessories of the vessel;
- a first open circuit voltage sensor that detects an open circuit voltage of the first battery;
- a second open circuit voltage sensor that detects an open circuit voltage of the second battery;
- a first switch that is turned on/off to open and close a current path between the first battery and the second battery;
- a first storage that stores a first open circuit voltage value detected by the first open circuit voltage sensor when the first switch is in an off state;
- a second storage that stores a second open circuit voltage value detected by the second open circuit voltage sensor when the first switch is in an off state;
- a first battery remaining level calculator that calculates a first battery remaining level of the first battery according to the first open circuit voltage value stored in the first storage and an integrated value of a current flowing into/out of the first battery;
- a second battery remaining level calculator that calculates a second battery remaining level of the second battery according to the second open circuit voltage value stored in the second storage and an integrated value of a current flowing into/out of the second battery;
- a charging circuit that charges the first battery and the second battery with electric power generated by the generator;
- and
- a second switch that is turned on/off to connect/disconnect the first battery and the propulsion device;
- wherein
- when the first switch is on and once the first battery remaining level calculated by the first battery remaining level calculator becomes lower than a first threshold value, the first switch is turned off;
- and
- once the first battery remaining level calculated by the first battery remaining level calculator exceeds a second threshold value that is equal to or higher than the first threshold value, the first switch is turned on and the second switch is turned off.
Dependencies are inferred from the claim text.