Control device for battery of marine vessel, control method therefor, and marine vessel
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYuji Ikegaya
Life of this patent
Estimating the term…
Abstract
A control device for a battery of a marine vessel recovers a power storage amount of a chargeable lithium ion battery while protecting the same. When an acquired power storage amount of the lithium ion battery becomes equal to or less than a first predetermined power storage amount, a switch to connect the lithium ion battery and a line or a load is turned off. While the switch is off, as an electric power balance on the line, a power inflow amount, a first power outflow amount, and a second power outflow amount are acquired. Based on the electric power balance acquired while the switch is off, whether a chargeable condition in which the lithium ion battery is chargeable is satisfied is determined. When the chargeable condition is satisfied, the switch is turned on.
Claims18
A control device for a battery of a marine vessel, the control device being configured or programmed to control a lithium ion battery mounted on the marine vessel in which a propeller of a marine propulsion device of the marine vessel is driven by any of an engine and a motor, the lithium ion battery supplies electric power to drive the motor and is chargeable by a generator, electric power generated by the generator is supplied to charge the lithium ion battery, and the lithium ion battery is connected through a switch with a line to supply the electric power to another battery or a load that consumes the electric power, the control device comprising:
- a controller configured or programmed to control the switch and to:
- acquire a power storage amount of the lithium ion battery;
- turn off the switch when the power storage amount that has been acquired becomes equal to or less than a first predetermined power storage amount;
- acquire, while the switch is off, as an electric power balance on the line, a power inflow amount of the electric power generated by the generator into the line, a first power outflow amount from the line to the motor, and a second power outflow amount from the line to the another battery or the load;
- determine whether a chargeable condition in which the lithium ion battery is chargeable is satisfied based on the electric power balance that has been acquired while the switch is off;
- and
- turn on the switch when the chargeable condition is satisfied.
A control method for a battery of a marine vessel to control a lithium ion battery mounted on the marine vessel in which a propeller of a marine propulsion device of the marine vessel is driven by any of an engine and a motor, the lithium ion battery supplies electric power to drive the motor and is chargeable by a generator, electric power generated by the generator is supplied to charge the lithium ion battery, and the lithium ion battery is connected through a switch with a line to supply the electric power to another battery or a load that consumes the electric power, the control method comprising:
- acquiring a power storage amount of the lithium ion battery;
- turning off the switch when the power storage amount that has been acquired becomes equal to or less than a first predetermined power storage amount;
- acquiring, while the switch is off, as an electric power balance on the line, a power inflow amount of the electric power generated by the generator into the line, a first power outflow amount from the line to the motor, and a second power outflow amount from the line to the another battery or the load;
- determining whether a chargeable condition in which the lithium ion battery is chargeable is satisfied based on the electric power balance that has been acquired while the switch is off;
- and
- turning on the switch when the chargeable condition is satisfied.
A marine vessel comprising:
- a control device;
- a marine propulsion device including a propeller to be driven by any of an engine and a motor;
- and
- a lithium ion battery to supply electric power to drive the motor and being chargeable by a generator;
- wherein
- electric power generated by the generator is supplied to charge the lithium ion battery, and the lithium ion battery is connected through a switch with a line to supply the electric power to another battery or a load that consumes the electric power;
- and
- the control device includes a controller configured or programmed to control the switch and to:
- acquire a power storage amount of the lithium ion battery;
- turn off the switch when the power storage amount that has been acquired becomes equal to or less than a first predetermined power storage amount;
- acquire, while the switch is off, as an electric power balance on the line, a power inflow amount of the electric power generated by the generator into the line, a first power outflow amount from the line to the motor, and a second power outflow amount from the line to the another battery or the load;
- determine whether a chargeable condition in which the lithium ion battery is chargeable is satisfied based on the electric power balance that has been acquired while the switch is off;
- and
- turn on the switch when the chargeable condition is satisfied.
Dependencies are inferred from the claim text.