CHARGING CONTROL DEVICE AND CHARGING CONTROL METHOD

• US 20100217485A1
• Filed: 11/14/2008
• Published: 08/26/2010
• Est. Priority Date: 11/30/2007
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Ichishi, Masato
• Granted Patent: US 8,504,227 B2
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60L 1/003 to auxiliary motors, e.g. for pumps, compressors
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/34 Cabin temperature
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/12 by confirmation, e.g. of the input
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 2260/56 Temperature prediction, e.g. for pre-cooling
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: H01M 10/441 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/482 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/322 : the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
• CPC Class Codes: H02J 7/0014 : Circuits for equalisation of charge between batteries
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• 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: Y02T 90/167 : Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A charging control device is a charging control device for independently controlling charging of power storage devices in a plurality of vehicles, respectively, each having the power storage device mounted thereon, from an external power supply, in which a control ECU detects a state of charge of the power storage device when each vehicle and the external power supply are coupled to each other, detects an expected amount of power consumption for each of the plurality of vehicles, calculates a required amount of power to be charged for each vehicle based on the detected state of charge and the expected amount of power consumption, detects a time to start use of each vehicle, determines a charging schedule of a charging time period and an amount of power to be charged for each vehicle based on the required amount to be charged and the time to start use, and controls charging of the power storage devices mounted on the vehicles according to the charging schedule. A charging control device and a charging control method achieving increased possibility that a vehicle desired to be used can be used at a desired time of use, while performing charging within contract power can be provided.

Claims

1. A charging control device for independently controlling charging of power storage devices in a plurality of vehicles, respectively, each having said power storage device mounted thereon, from an external power supply, comprising:

a state-of-charge detection unit for detecting a state of charge of each of said power storage devices after each vehicle and said external power supply are coupled to each other;

an expected-amount-of-power-consumption detection unit for detecting an expected amount of power consumption for each of said plurality of vehicles;

a required-amount-of-power-to-be-charged calculation unit for calculating a required amount of power to be charged for each vehicle based on the detected state of charge and the expected amount of power consumption;

a use time detection unit for detecting a time to start use of each vehicle;

a charging schedule setting unit for determining a charging schedule of a charging time period and an amount of power to be charged for each vehicle based on said required amount of power to be charged and said time to start use; and

a control unit for controlling charging of the power storage device mounted on said vehicle according to said charging schedule.

2. The charging control device according to claim 1, further comprising:

a charge efficiency calculation unit for calculating charge efficiency of each of said power storage devices, wherein

said charging schedule setting unit sets said charging schedule further based on said charge efficiency.

3. The charging control device according to claim 1, further comprising:

a preparatory air conditioning information acquiring unit for acquiring instruction information about preparatory air conditioning prior to start of operation which is set in at least any of said plurality of vehicles, wherein

said expected-amount-of-power-consumption detection unit calculates said expected amount of power consumption including power required for said preparatory air conditioning as well, and

said charging schedule setting unit sets said charging schedule based on the instruction information about said preparatory air conditioning.

4. The charging control device according to claim 1, wherein

said control unit causes the power storage device in each of said plurality of vehicles to be charged with said required amount of power to be charged, and then continues to cause the power storage device to be charged to full charge beyond said required amount of power to be charged in at least any of the vehicles.

5. The charging control device according to claim 1, wherein

said control unit acquires a vehicle type from each of said vehicles, and

said charging schedule setting unit determines said charging schedule based on said vehicle type.

6. The charging control device according to claim 1, wherein

each of said vehicles includes an internal combustion engine and a fuel tank for storing fuel for said internal combustion engine, and

said charging schedule setting means sets said charging schedule based on a remaining amount of fuel in said fuel tank.

8. The charging control device according to claim 2, further comprising:

a preparatory air conditioning information acquiring unit for acquiring instruction information about preparatory air conditioning prior to start of operation which is set in at least any of said plurality of vehicles, wherein

said expected-amount-od-power-consumption detection unit calculates said expected amount of power consumption including power required for said preparatory air conditioning as well, and

said charging schedule setting unit sets said charging schedule based on the instruction information about said preparatory air conditioning.

7. A charging control method performed by a charging control device for independently controlling charging of power storage devices in a plurality of vehicles, respectively, each having said power storage device mounted thereon, from an external power supply, comprising the steps of:

detecting a state of charge of each of said power storage devices, by said charging control device, after each vehicle and said external power supply are coupled to each other;

detecting an expected amount of power consumption for each of said plurality of vehicles by said charging control device;

calculating a required amount of power to be charged for each vehicle, by said charging control device, based on the detected state of charge and the expected amount of power consumption;

detecting a time to start use of each vehicle by said charging control device;

determining a charging schedule of a charging time period and an amount of power to be charged for each vehicle, by said charging control device, based on said required amount to be charged and said time to start use; and

controlling charging of the power storage device mounted on said vehicle, by said charging control device, according to said charging schedule.