HYBRID VEHICLE

• US 20130297129A1
• Filed: 01/24/2011
• Published: 11/07/2013
• Est. Priority Date: 01/24/2011
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ang, Wanleng, Sugiyama, Yoshinobu
• Granted Patent: US 8,755,964 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 6/445 Differential gearing distribution type
• CPC Class Codes: B60L 2210/14 Boost converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2260/44 by parameter estimation
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 58/13 Maintaining the SoC within a determined range
• 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 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/12 : using control strategies taking into account route information estimation or calculation of non-directly measurable driving parameters B60W40/00
• 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 20/20 : 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 2510/244 : Charge state
• CPC Class Codes: B60W 2556/00 : Input parameters relating to data
• CPC Class Codes: B60W 2556/50 : of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: B60W 2710/244 : Charge state
• CPC Class Codes: B60W 50/0097 : Predicting future conditions
• 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 10/72 : Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y10S 903/903 : having energy storing means, e.g. battery, capacitor
• CPC Class Codes: Y10S 903/93 : Conjoint control of different elements

Abstract

An outlet is provided to output power stored in a power storage device as commercial power, and the outlet receives power supply from the power storage device via a voltage converter. A car navigation device is configured to store information about traveling of a vehicle to a destination. An ECU obtains the information about traveling to the destination from the car navigation device, and controls a state of charge of the power storage device based on the information up to the destination and a usage status of the outlet up to the destination.

Claims

1. A hybrid vehicle, comprising:

a rechargeable power storage device;

an internal combustion engine;

at least one motor having a power generation function for supplying power to said power storage device by being driven by said internal combustion engine, and a function of generating a traveling drive force;

a power output device for outputting the power stored in said power storage device as commercial power;

an information appliance configured to store information about traveling of the vehicle to a destination; and

a control device controlling a state of charge of said power storage device based on said information up to the destination and a usage status of said power output device up to the destination.

2. The hybrid vehicle according to claim 1, wherein said control device estimates a used power amount of said power output device to be used until the vehicle reaches the destination, based on said information up to the destination and the usage status of said power output device, and controls the state of charge of said power storage device based on an estimation result.

3. The hybrid vehicle according to claim 2, wherein said control device estimates said used power amount, based on output power from said power output device and a time required to reach the destination.

4. The hybrid vehicle according to claim 2, further comprising an input device for allowing a user to input used power of said power output device,

wherein said control device estimates said used power amount, based on the used power input via the input device and a time required to reach the destination.

5. The hybrid vehicle according to claim 1, wherein

said control device further controls switching of a traveling mode including a first mode (CD mode) in which traveling using only said at least one motor with said internal combustion engine being stopped is prioritized, and a second mode (CS mode) in which said internal combustion engine is operated to maintain the state of charge of said power storage device at a predetermined target, and

if a residual capacity of said power storage device becomes lower than a second threshold value (S2) which is higher than a first threshold value (S1) indicating a lower limit of said residual capacity by said used power amount, said control device sets said traveling mode to said second mode.

6. The hybrid vehicle according to claim 5, wherein, in a period from when said residual capacity becomes lower than said second threshold value to when the vehicle reaches said destination, said control device changes a target for said residual capacity such that said residual capacity gradually decreases in accordance with the usage status of said power output device.

11. The hybrid vehicle according to claim 2, wherein

said control device further controls switching of a traveling mode including a first mode (CD mode) in which traveling using only said at least one motor with said internal combustion engine being stopped is prioritized, and a second mode (CS mode) in which said internal combustion engine is operated to maintain the state of charge of said power storage device at a predetermined target, and

if a residual capacity of said power storage device becomes lower than a second threshold value (S2) which is higher than a first threshold value (S1) indicating a lower limit of said residual capacity by said used power amount, said control device sets said traveling mode to said second mode.

12. The hybrid vehicle according to claim 3, wherein

said control device further controls switching of a traveling mode including a first mode (CD mode) in which traveling using only said at least one motor with said internal combustion engine being stopped is prioritized, and a second mode (CS mode) in which said internal combustion engine is operated to maintain the state of charge of said power storage device at a predetermined target, and

if a residual capacity of said power storage device becomes lower than a second threshold value (S2) which is higher than a first threshold value (S1) indicating a lower limit of said residual capacity by said used power amount, said control device sets said traveling mode to said second mode.

13. The hybrid vehicle according to claim 4, wherein

said control device further controls switching of a traveling mode including a first mode (CD mode) in which traveling using only said at least one motor with said internal combustion engine being stopped is prioritized, and a second mode (CS mode) in which said internal combustion engine is operated to maintain the state of charge of said power storage device at a predetermined target, and

if a residual capacity of said power storage device becomes lower than a second threshold value (S2) which is higher than a first threshold value (S1) indicating a lower limit of said residual capacity by said used power amount, said control device sets said traveling mode to said second mode.

14. The hybrid vehicle according to claim 11, wherein, in a period from when said residual capacity becomes lower than said second threshold value to when the vehicle reaches said destination, said control device changes a target for said residual capacity such that said residual capacity gradually decreases in accordance with the usage status of said power output device.

15. The hybrid vehicle according to claim 12, wherein, in a period from when said residual capacity becomes lower than said second threshold value to when the vehicle reaches said destination, said control device changes a target for said residual capacity such that said residual capacity gradually decreases in accordance with the usage status of said power output device.

16. The hybrid vehicle according to claim 13, wherein, in a period from when said residual capacity becomes lower than said second threshold value to when the vehicle reaches said destination, said control device changes a target for said residual capacity such that said residual capacity gradually decreases in accordance with the usage status of said power output device.

7. A control method for a hybrid vehicle,

said hybrid vehicle including

a rechargeable power storage device,

an internal combustion engine,

at least one motor having a power generation function for supplying power to said power storage device by being driven by said internal combustion engine, and a function of generating a traveling drive force,

a power output device for outputting the power stored in said power storage device as commercial power, and

an information appliance configured to store information about traveling of the vehicle to a destination,

said control method comprising the steps of:

estimating a used power amount of said power output device to be used until the vehicle reaches the destination, based on said information up to the destination and a usage status of said power output device; and

controlling a state of charge of said power storage device based on an estimation result.

8. The control method for the hybrid vehicle according to claim 7, wherein said step of estimating includes the step of estimating said used power amount, based on output power from said power output device and a time required to reach the destination.

9. The control method for the hybrid vehicle according to claim 7, wherein

said hybrid vehicle can switch a traveling mode including a first mode (CD mode) in which traveling using only said at least one motor with said internal combustion engine being stopped is prioritized, and a second mode (CS mode) in which said internal combustion engine is operated to maintain the state of charge of said power storage device at a predetermined target, and

said control method further comprises the steps of:

comparing a residual capacity of said power storage device with a second threshold value (S2) which is higher than a first threshold value (S1) indicating a lower limit of said residual capacity by said used power amount, and

if said residual capacity becomes lower than said second threshold value, setting said traveling mode to said second mode.

10. The control method for the hybrid vehicle according to claim 9, further comprising the step of changing a target for said residual capacity, in a period from when said residual capacity becomes lower than said second threshold value to when the vehicle reaches said destination, such that said residual capacity gradually decreases in accordance with the usage status of said power output device.

17. The control method for the hybrid vehicle according to claim 8, wherein

said hybrid vehicle can switch a traveling mode including a first mode (CD mode) in which traveling using only said at least one motor with said internal combustion engine being stopped is prioritized, and a second mode (CS mode) in which said internal combustion engine is operated to maintain the state of charge of said power storage device at a predetermined target, and

said control method further comprises the steps of:

comparing a residual capacity of said power storage device with a second threshold value (S2) which is higher than a first threshold value (S1) indicating a lower limit of said residual capacity by said used power amount, and

if said residual capacity becomes lower than said second threshold value, setting said traveling mode to said second mode.

18. The control method for the hybrid vehicle according to claim 17, further comprising the step of changing a target for said residual capacity, in a period from when said residual capacity becomes lower than said second threshold value to when the vehicle reaches said destination, such that said residual capacity gradually decreases in accordance with the usage status of said power output device.