Electric supply controller, electric supply system and method for controlling electric supply to charger and vehicle

• US 8,378,627 B2
• Filed: 06/29/2010
• Issued: 02/19/2013
• Est. Priority Date: 08/05/2009
• Status: Expired due to Fees

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: Asada, Hiroshige, Kanamori, Takashi, Taguchi, Shinya
• Primary Examiner(s): DIAO, M BAYE
• Application Number:
  US12/801,861
• Publication Number:
  US 20110031929A1
• Time in Patent Office: 966 Days
• Field of Search: 320/109
• US Class Current: 320/109
• CPC Class Codes: B60L 2240/72 Charging station selection relying on external data
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/20 by driver identification
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/64 Optimising energy costs, e.g. responding to electricity rates
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 58/20 having different nominal voltages
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: Y02E 60/00 Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• 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 10/126 : the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

Chargers are connectable with vehicles. An electric supply controller controls a switching circuit to connect an electric power supply line to one of the chargers. A storage unit of the electric supply controller associates information on a priority to each of the vehicles and stores the associated information therein. When the vehicles are simultaneously connected to different chargers, a control unit of the electric supply controller controls the switching circuit to connect the electric power supply line preferentially to one of the different chargers. The one of the different chargers is connected to one of the vehicles assigned with a highest priority.

Claims

1. An electric supply controller for controlling a switching circuit to connect an electric power supply line to one charger selected from a plurality of chargers, the plurality of chargers being connectable with a plurality of vehicles, the electric supply controller comprising:

a storage unit configured to associate information on a priority to a vehicle ID of each of at least part of the plurality of vehicles and configured to store the associated information therein;

a vehicle ID receiving unit configured to receive a vehicle ID from each of at least part of the plurality of vehicles connected to one of the plurality of chargers; and

a control unit configured to control the switching circuit,

when at least part of the plurality of vehicles are simultaneously connected to different chargers,

to determine a priority associated with the vehicle ID that is received,

so as to connect the electric power supply line preferentially to one of the different chargers based on the vehicle ID assigned with a highest priority among a plurality of vehicle IDs received from the at least part of the plurality of vehicles respectively,

the one of the different chargers being connected to one of the plurality of vehicles, which is assigned with the vehicle ID associated with the highest priority.

2. The electric supply controller according to claim 1,

wherein the plurality of chargers includes a first charger and a second charger,

wherein the plurality of vehicles includes a first vehicle and a second vehicle,

in a condition where the switching circuit connects the electric power supply line to the first charger, which is being connected to the first vehicle, and the second vehicle is newly connected to the second charger, the control unit is configured to:

cause the switching circuit to maintain the electric power supply line connected to the first charger when a priority assigned to the vehicle ID of the first vehicle is higher than a priority assigned to the vehicle ID of the second vehicle; and

cause the switching circuit to switch the electric power supply line to be connected to the second charger when the priority assigned to the vehicle ID of the second vehicle is higher than the priority assigned to the vehicle ID of the first vehicle.

3. The electric supply controller according to claim 1,

wherein the storage unit is configured to store a priority assigned with a valid period in late night hours, and

in a condition where one of the plurality of vehicles is connected to one of the plurality of chargers, and it is out of the late night hours corresponding to the valid period assigned to the vehicle ID of a priority of the one vehicle, the control unit is configured to prohibit the electric power supply line from being connected to the one charger, irrespective of whether another vehicle is connected to a charger other than the one charger.

4. The electric supply controller according to claim 1,

wherein the plurality of chargers includes a first charger and a second charger,

wherein the plurality of vehicles includes a first vehicle and a second vehicle,

in a first condition where the first vehicle is connected to the first charger, the second vehicle is connected to the second charger, a valid period is assigned to the vehicle ID of a priority assigned to the vehicle ID of the first vehicle, and a valid period is not assigned to the vehicle ID of a priority assigned to the vehicle ID of the second vehicle, the control unit is configured to cause the switching circuit to connect the electric power supply line to the second charger when it is out of the valid period of the priority assigned to the vehicle ID of the first vehicle, and

after the first condition, in a second condition where it is in the valid period of the priority assigned to the vehicle ID of the first vehicle, the control unit is configured to:

cause the switching circuit to switch the electric power supply line to be connected to the first charger when the priority assigned to the vehicle ID of the first vehicle is higher than the priority assigned to the vehicle ID of the second vehicle; and

cause the switching circuit to maintain the electric power supply line connected to the second charger when the priority assigned to the second vehicle is higher than the priority assigned to the vehicle ID of the first vehicle.

5. The electric supply controller according to claim 1,

wherein the storage unit is further configured to associate information on the priority to the vehicle ID of each of at least part of the plurality of vehicles and configured to store the associated information therein, according to an operation of a user.

6. The electric supply controller according to claim 1,

wherein the plurality of chargers includes a first charger and a second charger,

wherein the plurality of vehicles includes a first vehicle and a second vehicle,

in a first condition where the first vehicle is connected to the first charger, the second vehicle is connected to the second charger, a valid period in late night hours is assigned to the vehicle ID of a priority assigned to the vehicle ID of the first vehicle, and a valid period in the late night hours is not assigned to the vehicle ID of a priority assigned to the vehicle ID of the second vehicle, the control unit is configured to cause the switching circuit to connect the electric power supply line to the second charger when it is out of the valid period of the priority assigned to the vehicle ID of the first vehicle, and

after the first condition, in a second condition where it is in the valid period of the priority assigned to the vehicle ID of the first vehicle, the control unit is configured to:

cause the switching circuit to switch the electric power supply line to be connected to the first charger when the priority assigned to the vehicle ID of the first vehicle is higher than the priority assigned to the vehicle ID of the second vehicle; and

cause the switching circuit to maintain the electric power supply line connected to the second charger when the priority assigned to the vehicle ID of the second vehicle is higher than the priority assigned to the vehicle ID of the first vehicle.

7. A method for controlling electric supply to one of a first vehicle and a second vehicle from one of a first charger and a second charger, the method comprising:

receiving a vehicle ID from each of the first vehicle and the second vehicle connected to the first charger and the second charger, respectively;

determining a priority associated with the vehicle ID that is received,

causing a switching circuit to connect the electric power supply line to the first charger being connected to the first vehicle, and

causing the switching circuit to switch the electric power supply line to be connected to the second charger when the second vehicle is connected to the second charger and when a priority assigned to the vehicle ID of the second vehicle is higher than a priority assigned to the vehicle ID of the first vehicle.

8. The method according to claim 7, wherein the causing the switching circuit to switch further includes:

causing the switching circuit to switch the electric power supply line to be connected to the second charger when another vehicle is newly connected to the second charger and when a priority assigned to the second charger is higher than a priority assigned to the first charger.

9. The method according to claim 7, further comprising:

assigning the priority to the vehicle ID of the first vehicle and assigning the priority to the vehicle ID of the second vehicle according to an operation of a user.

10. An electric supply controller for controlling a switching circuit to connect an electric power supply line to one charger selected from a plurality of chargers, the plurality of chargers being connectable with a plurality of vehicles, the electric supply controller comprising:

a storage unit configured to associate information on a priority to a vehicle ID of each of at least part of the plurality of vehicles and configured to store the associated information therein;

a vehicle ID receiving unit configured to receive a vehicle ID from each of at least part of the plurality of vehicle connected to one of the plurality of chargers; and

a control unit configured to control the switching circuit,

when at least part of the plurality of vehicles are simultaneously connected to different chargers,

to determine a priority associated with the vehicle ID that is received,

so as to connect the electric power supply line preferentially to one of the different chargers based on a vehicle ID assigned with a highest priority among a plurality of vehicle IDs received from the at least part of the plurality of vehicles respectively,

the one of the different chargers being connected to one of the plurality of vehicles, which is assigned with the vehicle ID associated with the highest priority, wherein

the storage unit is configured to store a priority assigned with a valid period in late night hours, and

in a condition where one of the plurality of vehicles is connected to one of the plurality of chargers, and it is out of the late night hours corresponding to the valid period assigned to the vehicle ID of a priority of the one vehicle, the control unit is configured to prohibit the electric power supply line from being connected to the one charger, irrespective of whether another vehicle is connected to a charger other than the one charger.