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US 2009/0015201 A1Published application
Hybrid Vehicle and Control Method Therefor
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMitsumasa Fukumura, Takashi Kawai
Life of this patent
Estimating the term…
Abstract
An HV-ECU executes refresh-discharging of a battery before the battery is charged from a commercial power source using an AC/DC converter. After the battery is refresh-discharged, the HV-ECU outputs a control signal to the AC/DC converter such that the battery is charged from the commercial power source by the drive of the AC/DC converter.
Claims15
A hybrid vehicle comprising:
- an internal combustion engine and a first electric motor incorporated as a motive energy source for a vehicle,
- a battery that can be charged and discharged, constituting a power source for said first electric motor,
- a power generation device generating electrical power using motive energy from said internal combustion engine, and capable of charging said battery,
- an electrical power conversion device conducting electrical power conversion such that electrical power can be transmitted and received between a power source external to the vehicle and said battery, and
- a control device controlling said electrical power conversion device such that refresh-discharging of said battery is executed before said battery is charged from said external power source using said electrical power conversion device, and said battery is charged from said external power source after said battery is refresh-discharged, wherein
- said power generation device includes a second electric motor having a rotational shaft mechanically coupled to a crankshaft of said internal combustion engine,
- said second electric motor can start said internal combustion engine using electrical power from said battery,
- said control device determines that said refresh-discharging is to be executed when a fuel remaining amount of said internal combustion engine exceeds a prescribed amount, and
- said prescribed amount corresponds to an amount that allows said internal combustion engine to be operated continuously during a period when a state of charge indicating a charge state of said battery is lower than a required amount required to start said internal combustion engine by said second electric motor in accordance with said refresh-discharging.
6 more elements
(canceled)
A hybrid vehicle comprising:
- an internal combustion engine and a first electric motor incorporated as a motive energy source for a vehicle,
- a battery that can be charged and discharged, constituting a power source for said first electric motor,
- a power generation device generating electrical power using motive energy from said internal combustion engine, and capable of charging said battery,
- an electrical power conversion device conducting electrical power conversion such that electrical power can be transmitted and received between a power source external to the vehicle and said battery, and
- a control device controlling said electrical power conversion device such that refresh-discharging of said battery is executed before said battery is charred from said external power source using said electrical power conversion device, and said battery is charged from said external power source after said battery is refresh-discharged, wherein
- said power generation device includes a second electric motor having a rotational shaft mechanically coupled to a crankshaft of said internal combustion engine,
- said second electric motor can start said internal combustion engine using electrical power from said battery, and
- said control device determines whether said external power source is stable or not, and controls said second electric motor such that said internal combustion engine is started when determination is made that said external power source is unstable.
5 more elements
A hybrid vehicle comprising
- an internal combustion engine and a first electric motor incorporated as a motive energy source for a vehicle,
- a battery that can be charged and discharged, constituting a power source for said first electric motor,
- a power generation device generating electrical power using motive energy from said internal combustion engine, and capable of charging said battery,
- an electrical power conversion device conducting electrical power conversion such that electrical power can be transmitted and received between a power source external to the vehicle and said battery,
- a control device controlling said electrical power conversion device such that refresh-discharging of said battery is executed before said battery is charged from said external power source using said electrical power conversion device, and said battery is charged from said external power source after said battery is refresh-discharged, and
- an input device for a user to designate whether said internal combustion engine is to be operated or not in accordance with said refresh-discharging, wherein
- said power generation device includes a second electric motor having a rotational shaft mechanically coupled to a crankshaft of said internal combustion engine,
- said second electric motor can start said internal combustion engine using electrical power from said battery, and
- said control device controls said second electric motor such that said internal combustion engine is started in accordance with said refresh-discharging when operation of said internal combustion engine is designated through said input device.
6 more elements
A control method for a hybrid vehicle, said hybrid vehicle including
- an internal combustion engine and a first electric motor incorporated as a motive energy source for a vehicle,
- a battery that can be charged and discharged, constituting a power source for said first electric motor,
- a power generation device generating electrical power using motive energy from said internal combustion engine, and capable of charging said battery, and
- an electrical power conversion device conducting electrical power conversion such that electrical power can be transmitted and received between a power source external to the vehicle and said battery, wherein
- said power generation device includes a second electric motor having a rotational shaft mechanically coupled to a crankshaft of said internal combustion engine,
- said second electric motor can start said internal combustion engine using electrical power from said battery,
- said control method comprising:
- a first step of executing refresh-discharging of said battery before said battery is charged from said external power source using said electrical power conversion device,
- a second step of charging said battery from said external power source by controlling said electrical power conversion device, after said battery is refresh-discharged, and
- a third step of determining whether said refresh-discharging is to be executed or not based on a fuel remaining amount of said internal combustion engine, wherein
- said refresh-discharging of said battery is executed at said first step when determination is made that said refresh-discharging is to be executed based on the fuel remaining amount of said internal combustion engine exceeding a prescribed amount at said third step, and
- said prescribed amount corresponds to an amount that allows said internal combustion engine to be operated continuously during a period when a state of charge indicating a charge state of said battery is lower than a required amount required to start said internal combustion engine by said second electric motor in accordance with said refresh-discharging.
9 more elements
(canceled)
A control method for a hybrid vehicle, said hybrid vehicle including
- an internal combustion engine and a first electric motor incorporated as a motive energy source for a vehicle,
- a battery that can be charged and discharged, constituting a power source for said first electric motor,
- a power generation device generating electrical power using motive energy from said internal combustion engine, and capable of charging said battery, and
- an electrical power conversion device conducting electrical power conversion such that electrical power can be transmitted and received between a power source external to the vehicle and said battery, wherein
- said power generation device includes a second electric motor having a rotational shaft mechanically coupled to a crankshaft of said internal combustion engine,
- said second electric motor can start said internal combustion engine using electrical power from said battery,
- said control method comprising the steps of:
- executing refresh-discharging of said battery before said battery is charged from said external power source using said electrical power conversion device,
- charging said battery from said external power source by controlling said electrical power conversion device, after said battery is refresh-discharged,
- determining whether said external power source is stable or not, and
- starting said internal combustion engine when determination is made that said external power source is unstable.
8 more elements
Dependencies are inferred from the claim text.