Control method and device for vehicle
AssigneeNissan Motor Co., Ltd.
InventorKazuma SUZUKI
Life of this patent
Estimating the term…
Abstract
A vehicle having an automatic driving function has an alternator (2), a starter motor (5), a load A group (21) including one of two automatic driving electric loads that form a redundant system, a load B group (22) including the other automatic driving electric load, a lead-acid battery (6), and a lithium-ion battery (7) for backup. When temperature of the lithium-ion battery (7) is an idling stop prohibition temperature (T1) or higher, the idling stop control is prohibited. The idling stop prohibition temperature (T1) is lower than an automatic driving prohibition temperature (T2) for prohibiting the automatic driving.
Claims11
-11. (canceled)
A method of controlling a vehicle having an engine, a generator driven by the engine and generating power, an automatic driving electric load including a first electric load and a second electric load that form a redundant system, a lithium-ion battery charged by power generated by the generator and supplying power necessary for automatic driving of the vehicle to the automatic driving electric load, a second power storage device charged by power generated by the generator, and a disconnecting device provided between the generator and the lithium-ion battery, the method comprising:
- executing a fuel efficiency improvement control that reduces driving energy of the generator when predetermined conditions are satisfied;
- prohibiting the fuel efficiency improvement control when temperature of the lithium-ion battery is a predetermined temperature or higher;
- controlling the disconnecting device to be brought into an interruption state when executing the fuel efficiency improvement control;
- and
- when the disconnecting device is in the interruption state, supplying power to the first electric load from the lithium-ion battery, and supplying power to the second electric load from the second power storage device.
A control device of a vehicle comprising:
- an engine;
- a generator driven by the engine and generating power;
- an automatic driving electric load including a first electric load and a second electric load that form a redundant system;
- a lithium-ion battery charged by power generated by the generator and supplying power necessary for automatic driving of the vehicle to the automatic driving electric load;
- a second power storage device charged by power generated by the generator;
- a disconnecting device provided between the generator and the lithium-ion battery;
- and
- a controller configured to
- execute a fuel efficiency improvement control that reduces driving energy of the generator when predetermined conditions are satisfied, and
- prohibit the fuel efficiency improvement control when temperature of the lithium-ion battery is a predetermined temperature or higher
- control the disconnecting device to be brought into an interruption state when executing the fuel efficiency improvement control, and
- when the disconnecting device is in the interruption state, supply power to the first electric load from the lithium-ion battery, and supply power to the second electric load from the second power storage device.
Dependencies are inferred from the claim text.