Hybrid vehicle and control method for hybrid vehicle

• US 10,279,800 B2
• Filed: 11/13/2017
• Issued: 05/07/2019
• Est. Priority Date: 12/06/2016
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ichikawa, Shinji
• Primary Examiner(s): Paige, Tyler D
• Application Number:
  US15/810,573
• Publication Number:
  US 20180154885A1
• Time in Patent Office: 540 Days
• Field of Search: 701 22
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/13 in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
• CPC Class Codes: B60W 20/14 in conjunction with braking regeneration
• CPC Class Codes: B60W 20/20 Control strategies involving selection of hybrid configuration, e.g. selection between series or parallel configuration
• CPC Class Codes: B60W 20/40 Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers power-up or power-down of the driveline B60W30/192
• CPC Class Codes: B60W 2540/043 Identity of occupants
• CPC Class Codes: B60W 2556/45 External transmission of data to or from the vehicle
• CPC Class Codes: B60W 2710/244 Charge state
• CPC Class Codes: B60W 40/09 Driving style or behaviour
• CPC Class Codes: B60W 50/082 Selecting or switching between different modes of propelling
• CPC Class Codes: B60W 50/12 Limiting control by the driver depending on vehicle state, e.g. interlocking means for the control input for preventing unsafe operation
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A hybrid vehicle includes an electronic control unit configured to switch a use mode between a first use mode in which an owner of the hybrid vehicle is a user and a second use mode in which any of persons other than the owner is the user. The hybrid vehicle includes an engine, a first MG, an electric power storage device electrically connected to the first MG, and the electronic control unit. When the use mode is the second use mode and the hybrid vehicle reaches a location near a destination, the electronic control unit executes recovery processing of recovering a SOC of the electric power storage device in a manner to bring the SOC closer to an initial value at time when the user starts using the hybrid vehicle.

Claims

1. A hybrid vehicle comprising:

an engine;

a first motor generator configured to generate electric power by using power of the engine;

an electric power storage device electrically connected to the first motor generator; and

an electronic control unit configured to control the engine and the first motor generator,

the electronic control unit being configured to switch a use mode to either one of a first use mode and a second use mode, the first use mode being a mode in which an owner of the hybrid vehicle is a user of the hybrid vehicle, and the second use mode being a mode in which any of persons other than the owner of the hybrid vehicle is the user, and

the electronic control unit being configured to execute recovery processing when the use mode is the second use mode, the recovery processing being processing of controlling the engine and the first motor generator such that a state of charge of the electric power storage device when the user finishes using the hybrid vehicle is brought closer to an initial value of the state of charge when the user starts using the hybrid vehicle.

2. The hybrid vehicle according to claim 1, wherein

the recovery processing is processing of bringing the state of charge of the electric power storage device closer to the initial value of the state of charge by increasing an amount of the electric power generated by the first motor generator using the power of the engine when the hybrid vehicle reaches a range within a specified distance from a destination of the hybrid vehicle.

3. The hybrid vehicle according to claim 1 further comprising

a second motor generator connected to a drive wheel, wherein

the electronic control unit is configured to, in addition to the recovery processing, prohibit travel using power of both of the first motor generator and the second motor generator when the use mode is the second use mode.

4. The hybrid vehicle according to claim 1, wherein

the hybrid vehicle is configured to travel in any of control modes that include a first control mode and a second control mode,

the second control mode is a control mode in which a starting condition of the engine is less likely to be established than in the first control mode, and

the electronic control unit is configured to prohibit the travel of the hybrid vehicle in the second control mode when the use mode is the second use mode.

5. The hybrid vehicle according to claim 1, wherein

the hybrid vehicle is configured to execute learning control for learning driving behavior of a driver, and

the electronic control unit is configured to prohibit execution of the learning control when the use mode is the second use mode.

6. A control method for a hybrid vehicle,

the hybrid vehicle including an engine, a first motor generator, an electric power storage device, and an electronic control unit,

the first motor generator being configured to generate electric power by using power of the engine,

the electric power storage device being electrically connected to the first motor generator, and

the electronic control unit being configured to control the engine and the first motor generator,

the control method comprising:

switching, by the electronic control unit, a use mode to either one of a first use mode and a second use mode the first use mode being a mode in which an owner of the hybrid vehicle is a user of the hybrid vehicle, and the second use mode being a mode in which any of persons other than the owner of the hybrid vehicle is the user; and

executing, by the electronic control unit, recovery processing when the use mode is the second use mode, the recovery processing being processing of controlling the engine and the first motor generator such that a state of charge of the electric power storage device when the user finishes using the hybrid vehicle is brought closer to an initial value of the state of charge when the user starts using the hybrid vehicle.