Vehicle and method for controlling the same

• US 8,473,132 B2
• Filed: 06/03/2009
• Issued: 06/25/2013
• Est. Priority Date: 06/09/2008
• Status: Active Grant

• Current Assignee: LG Chem Limited (LG Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ichikawa, Shinji, Ishikawa, Tetsuhiro
• Primary Examiner(s): FREJD, RUSSELL WARREN
• Application Number:
  US12/996,462
• Publication Number:
  US 20110077812A1
• Time in Patent Office: 1,483 Days
• Field of Search: 701/22, 701/29, 180/65.1, 180/65.21, 180/65.245, 180/65.25, 180/65.26, 180/65.275, 180/65.28, 180/65.285, 180/65.29, 903/902, 903/903
• US Class Current: 701/22
• CPC Class Codes: B60K 1/02 comprising more than one electric motor
• CPC Class Codes: B60K 6/20 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2240/423 Torque
• CPC Class Codes: B60L 5/005 without mechanical contact between the collector and the power supply line
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• 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 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/64 Electric machine technologies in electromobility
• 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 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A vehicle includes a battery, an electric power reception unit receiving electric power from an electric power transmission unit external to the vehicle, and a motor generator driven by the electric power supplied from the battery and the electric power supplied from the electric power reception unit. The control device calculates the first electric power that can be output from the battery, calculates the second electric power that can be charged from outside based on the transmittable electric power of the electric power transmission unit and the chargeable electric power of the electric power reception unit, obtains the sum of the first electric power and the second electric power as electric power suppliable from a power supply, and performs drive control of a motor generator based on the electric power suppliable from a power supply.

Claims

1. A vehicle comprising:

a power storage device;

an electric power reception unit receiving electric power from an electric power transmission unit external to a vehicle;

a first rotating electric machine driven by electric power supplied from said power storage device and electric power supplied from said electric power reception unit; and

a control device for performing drive control of said first rotating electric machine,

said control device calculating first electric power that can be output from said power storage device based on a state of said power storage device, calculating second electric power that can be charged from outside based on transmittable electric power of said electric power transmission unit and chargeable electric power of said electric power reception unit, obtaining a sum of said first electric power and said second electric power as electric power suppliable from a power supply, and performing drive control of said first rotating electric machine based on said electric power suppliable from a power supply;

a voltage conversion unit converting a first voltage output from said power storage device; and

a rotating electric machine driving unit receiving a voltage converted by said voltage conversion unit to drive said first rotating electric machine, wherein

said electric power reception unit is connected to an electric power transfer path connecting between said voltage conversion unit and said rotating electric machine driving unit, and

said control device performs voltage conversion control for said voltage conversion unit based on a highest voltage among said first voltage output from said power storage device, a second voltage requested by said rotating electric machine driving unit and a third voltage requested by said electric power reception unit; and

an internal combustion engine;

a second rotating electric machine receiving power from said internal combustion engine to generate electric power used in said first rotating electric machine;

a voltage conversion unit converting a first voltage output from said power storage device; and

a rotating electric machine driving unit receiving a voltage converted by said voltage conversion unit to drive said first and second rotating electric machines, wherein

said rotating electric machine driving unit requests a second voltage determined based on an operation of each of said first and second rotating electric machines,

said electric power reception unit is connected to a neutral point of a stator coil of said second rotating electric machine and a neutral point of a stator coil of said first rotating electric machine, and

said control device performs voltage conversion control for said voltage conversion unit based on a highest voltage among said first voltage output from said power storage device and said second voltage requested by said rotating electric machine driving unit, and on a third voltage requested by said electric power reception unit.

2. A method for controlling a vehicle including a power storage device, an electric power reception unit receiving electric power from an electric power transmission unit external to a vehicle, a first rotating electric machine driven by electric power supplied from said power storage device and electric power supplied from said electric power reception unit, a voltage conversion unit converting a first voltage output from said power storage device, a rotating electric machine driving unit receiving a voltage converted by said voltage conversion unit to drive said first rotating electric machine, said electric power reception unit being connected to an electric power transfer path connecting between said voltage conversion unit and said rotating electric machine driving unit, said method comprising the steps of:

calculating first electric power that can be output from said power storage device based on a state of said power storage device;

calculating second electric power that can be charged from outside based on transmittable electric power of said electric power transmission unit and chargeable electric power of said electric power reception unit;

obtaining a sum of said first electric power and said second electric power as electric power suppliable from a power supply;

performing drive control of said first rotating electric machine based on said electric power suppliable from a power supply; and

performing voltage conversion control for said voltage conversion unit based on a highest voltage among said first voltage output from said power storage device, a second voltage requested by said rotating electric machine driving unit and a third voltage requested by said electric power reception unit;

wherein said vehicle further includes an internal combustion engine, a second rotating electric machine receiving power from said internal combustion engine to generate electric power used in said first rotating electric machine, a voltage conversion unit converting a first voltage output from said power storage device, and a rotating electric machine driving unit receiving a voltage converted by said voltage conversion unit to drive said first and second rotating electric machines,

said rotating electric machine driving unit requests a second voltage determined based on an operation of each of said first and second rotating electric machines, and

said electric power reception unit is connected to a neutral point of a stator coil of said second rotating electric machine and a neutral point of a stator coil of said first rotating electric machine, said method further comprising the step of;

performing voltage conversion control for said voltage conversion unit based on a highest voltage among said first voltage output from said power storage device and said second voltage requested by said rotating electric machine driving unit, and on a third voltage requested by said electric power reception unit.

3. A vehicle comprising:

a power storage device;

an electric power reception unit receiving electric power from an electric power transmission unit external to a vehicle;

a first rotating electric machine driven by electric power supplied from said power storage device and electric power supplied from said electric power reception unit; and

a control device for performing drive control of said first rotating electric machine,

said control device calculating first electric power that can be output from said power storage device based on a state of said power storage device, calculating second electric power that can be charged from outside based on transmittable electric power of said electric power transmission unit and chargeable electric power of said electric power reception unit, obtaining a sum of said first electric power and said second electric power as electric power suppliable from a power supply, and performing drive control of said first rotating electric machine based on said electric power suppliable from a power supply; and

a voltage conversion unit converting a first voltage output from said power storage device; and

a rotating electric machine driving unit receiving a voltage converted by said voltage conversion unit to drive said first rotating electric machine, wherein

said electric power reception unit is connected to an electric power transfer path connecting between said voltage conversion unit and said rotating electric machine driving unit, and

said control device performs voltage conversion control for said voltage conversion unit based on a highest voltage among said first voltage output from said power storage device, a second voltage requested by said rotating electric machine driving unit and a third voltage requested by said electric power reception unit.

4. The vehicle according to claim 3, further comprising:

an internal combustion engine; and

a second rotating electric machine receiving power from said internal combustion engine to generate electric power used in said first rotating electric machine, wherein

said rotating electric machine driving unit drives said second rotating electric machine in addition to said first rotating electric machine, and requests said second voltage determined based on an operation of each of said first and second rotating electric machines.

5. A method for controlling a vehicle including a power storage device, an electric power reception unit receiving electric power from an electric power transmission unit external to a vehicle, and a first rotating electric machine driven by electric power supplied from said power storage device and electric power supplied from said electric power reception unit, said method comprising the steps of:

calculating first electric power that can be output from said power storage device based on a state of said power storage device;

calculating second electric power that can be charged from outside based on transmittable electric power of said electric power transmission unit and chargeable electric power of said electric power reception unit;

obtaining a sum of said first electric power and said second electric power as electric power suppliable from a power supply; and

performing drive control of said first rotating electric machine based on said electric power suppliable from a power supply;

wherein

said vehicle further includes a voltage conversion unit converting a first voltage output from said power storage device; and

a rotating electric machine driving unit receiving a voltage converted by said voltage conversion unit to drive said first rotating electric machine, and

said electric power reception unit is connected to an electric power transfer path connecting between said voltage conversion unit and said rotating electric machine driving unit, said method further comprising the step of;

performing voltage conversion control for said voltage conversion unit based on a highest voltage among said first voltage output from said power storage device, a second voltage requested by said rotating electric machine driving unit and a third voltage requested by said electric power reception unit.

6. The method for controlling a vehicle according to claim 5, wherein

said vehicle further includes an internal combustion engine and a second rotating electric machine receiving power from said internal combustion engine to generate electric power used in said first rotating electric machine, and

said rotating electric machine driving unit drives said second rotating electric machine in addition to said first rotating electric machine, and requests said second voltage determined based on an operation of each of said first and second rotating electric machines.