Hybrid vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKoji Hokoi
Life of this patent
Estimating the term…
Abstract
A power split mechanism of a hybrid vehicle includes a sun gear that is coupled to a electric power generator, a ring gear that is coupled to a electric motor and a driving wheel, a pinion gear that meshes with the sun gear and the ring gear, and a carrier that supports the pinion gear and is coupled to a engine. Each of the arms of a inverter includes a first switching element that is provided on an upper arm thereof, and a second switching element that is provided on a lower arm thereof. A control device turns on one of the first switching element and the second switching element and turns off the other if an operation of stopping a vehicle system is performed during running.
Claims7
A hybrid vehicle comprising:
- an engine and an electric motor for driving a driving wheel;
- an electric power generator capable of generating an electric power by a power of the engine;
- a power split mechanism that splits the power of the engine and transmits the split power to the driving wheel and the electric power generator;
- an inverter that is connected to the electric power generator and includes a plurality of arms;
- and
- a control device that controls running through execution of a vehicle system, wherein
- the power split mechanism includes a sun gear that is coupled to the electric power generator, a ring gear that is coupled to the electric motor and the driving wheel, a pinion gear that meshes with the sun gear and the ring gear, and a carrier that supports the pinion gear and is coupled to the engine, and
- each of the arms of the inverter includes a first switching element that is provided on an upper arm thereof, and a second switching element that is provided on a lower arm thereof, and
- the control device turns on one of the first switching element and the second switching element and turns off the other if an operation of stopping the vehicle system is performed during running.
A control method for a hybrid vehicle that is equipped with an engine and an electric motor for driving a driving wheel, an electric power generator capable of generating an electric power by a power of the engine, a power split mechanism that splits the power of the engine and transmits the split power to the driving wheel and the electric power generator, and includes a sun gear that is coupled to the electric power generator, a ring gear that is coupled to the electric motor and the driving wheel, a pinion gear that meshes with the sun gear and the ring gear, and a carrier that supports the pinion gear and is coupled to the engine, and an inverter that is connected to the electric power generator and includes a plurality of arms each of which includes a first switching element provided on an upper arm thereof and a second switching element provided on a lower arm thereof, the method comprising:
- turning on one of the first switching element and the second switching element and turning off the other if an operation of stopping a vehicle system is performed during running and the sun gear is in a negative rotation range.
A control method for a hybrid vehicle that is equipped with an engine and an electric motor for driving a driving wheel, an electric power generator capable of generating an electric power by a power of the engine, a power split mechanism that splits the power of the engine and transmits the split power to the driving wheel and the electric power generator, and includes a sun gear that is coupled to the electric power generator, a ring gear that is coupled to the electric motor and the driving wheel, a pinion gear that meshes with the sun gear and the ring gear, and a carrier that supports the pinion gear and is coupled to the engine, and an inverter that is connected to the electric power generator and includes a plurality of arms each of which includes a first switching element provided on an upper arm thereof and a second switching element provided on a lower arm thereof, each of the arms including a first rectifying element that is provided in parallel with the first switching element, and a second rectifying element that is provided in parallel with the second switching element, an electric storage device that stores an electric power for running, and a step-up/step-down converter that is provided between the inverter and the electric storage device, the method comprising:
- turning off the first switching element and the second switching element and controlling the step-up/step-down converter in such a manner as to charge the electric storage device by generating an electric power by the electric power generator if an operation of stopping a vehicle system is performed during running and the sun gear is in a negative rotation range.
Dependencies are inferred from the claim text.