Charge control device, battery management device, charge control method, and record medium

• US 9,682,633 B2
• Filed: 09/21/2012
• Issued: 06/20/2017
• Est. Priority Date: 11/01/2011
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Yano, Hitoshi, Kudo, Koji
• Primary Examiner(s): LEE, ERIC D
• Application Number:
  US14/350,900
• Publication Number:
  US 20140253037A1
• Time in Patent Office: 1,733 Days
• Field of Search: 320109
• CPC Class Codes: B60L 2200/26 Rail vehicles
• 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 2240/72 Charging station selection relying on external data
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• 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 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 2310/54 according to a pre-established time schedule
• CPC Class Codes: H02J 3/144 Demand-response operation of the power transmission or distribution network
• 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 3/381 : Dispersed generators
• CPC Class Codes: H02J 3/466 : Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
• CPC Class Codes: H02J 7/0013 : acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: Y02E 10/56 : Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 60/00 : Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• 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 30/12 : Remote or cooperative charging
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A charge-control device that controls charging of vehicles, which use electric power as a drive source, using electric power from an electric power grid includes storage means storing a first period in a charge control period for which the charging is controlled; a second period other than the first period in the charge control period; and a target level of a charge demand in the first period; receipt means receiving from each of the vehicles the required charge amount; and control means controlling the charging using the target level of the charge demand in the first period, setting up a target level of charging in the second period based on a remaining total amount generated by subtracting the charge amount in the first period from a total amount of the plurality of required charge amounts to control the charging using the target level of the charging.

Claims

1. A charge control device that controls charging of a plurality of vehicles, which use electric power as a drive source, using electric power from an electric power grid, comprising:

a storage unit that stores a first period in a charge control period for which the charging is controlled;

a second period other than the first period in the charge control period; and

a target level of a charge demand in the first period;

a receipt unit that receives from each of the plurality of vehicles a required charge amount;

a control unit that controls the charging using as a target the target level of the charge demand in the first period, sets up a target level of charging in the second period based on a remaining total amount that is generated by subtracting the charge amount in the first period from a total amount of the plurality of required charge amounts, and controls the charging using as a target the target level of the charging, and

an assignment unit that assigns charge priorities to the plurality of vehicles based on a predetermined condition comprising a factor calculated by the formula [Required charge amount/(Remaining charge time×

Charge electric power)], wherein the assignment unit assigns a higher charge priority to a vehicle having a larger factor.

2. The charge control device as set forth in claim 1,

wherein the receipt unit further receives from each of the plurality of vehicles an expected connection period for which the vehicle is expected to be connected to the electric power grid, and

wherein the control unit sets up a charge schedule for which each of the plurality of vehicles is charged with the remaining total amount within the expected connection period in the second period and sets up the target level of the charging based on the charge schedule.

3. The charge control device as set forth in claim 2,

wherein the control unit sets up the charge schedule such that each of the plurality of vehicles is charged with the remaining total amount within the expected connection period in the second period and such that charge fluctuations become small in the second period.

4. The charge control device as set forth in claim 1, wherein the control unit selects vehicles expected to be charged from the plurality of vehicles in the order of the higher charge priorities based on the target level of the charge demand, charges the selected vehicles expected to be charged in the first period, selects the vehicles expected to be charged in the order of the higher charge priorities in the second period based on the target level of the charging, and charges the selected vehicles expected to be charged in the second period.

5. The charge control device as set forth in claim 1, wherein the control unit calculates a difference between the target level of the charge demand and the achieved charge electric power in the first period and calculates a fare corresponding to the difference.

6. A charge control method for a charge control device that controls charging of a plurality of vehicles, which use electric power as a drive source, using electric power from an electric power grid, comprising:

storing into a storage unit a first period in a charge control period for which the charging is controlled;

a second period other than the first period in the charge control period; and

a target level of a charge demand in the first period;

receiving from each of the plurality of vehicles a required charge amount; and

controlling the charging using as a target the target level of the charge demand in the first period, setting up a target level of charging in the second period based on a remaining total amount that is generated by subtracting the charge amount in the first period from a total amount of the plurality of required charge amounts, and controlling the charging using as a target the target level of the charging

assigning charge priorities to the plurality of vehicles based on a predetermined condition comprising a factor calculated by the formula [Required charge amount/(Remaining charge time×

Charge electric power)], wherein a higher charge priority is assigned to a vehicle having a larger factor.

7. A non-transitory computer readable record medium on which a program that causes a computer to execute procedures is recorded, the procedures comprising:

a storage procedure that stores into a storage unit a first period in a charge control period for which charging of a plurality of vehicles which use electric power as a drive source using electric power from an electric power grid is controlled;

a second period other than the first period in the charge control period; and

a target level of a charge demand in the first period;

a receipt procedure that receives from each of the plurality of vehicles a required charge amount;

a control procedure that controls the charging using as a target the target level of the charge demand in the first period, sets up a target level of charging in the second period based on a remaining total amount that is generated by subtracting the charge amount of the charging in the first period from a total amount of the plurality of required charge amounts, and controls the charging using as a target the target level of the charging;

an assignment procedure that assigns charge priorities to the plurality of vehicles based on a predetermined condition comprising a factor calculated by the formula [Required charge amount/(Remaining charge time×

Charge electric power)], wherein the assignment procedure assigns a higher charge priority to a vehicle having a larger factor.