Energy management controller, energy management system, charge/discharge control method and program

• US 10,259,335 B2
• Filed: 04/18/2014
• Issued: 04/16/2019
• Est. Priority Date: 04/18/2014
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Endo, Satoshi, Yano, Hirotoshi, Yabe, Masaaki, Minezawa, Satoshi, Maruyama, Ichiro, Ogawa, Yuki, Sato, Kaori
• Primary Examiner(s): Pelton, Nathaniel R
• Assistant Examiner(s): Kebede, Tessema
• Application Number:
  US15/121,852
• Publication Number:
  US 20170008416A1
• Time in Patent Office: 1,824 Days
• Field of Search: 320109
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/31 Charging columns specially adapted for electric vehicles
• CPC Class Codes: B60L 53/51 Photovoltaic means
• 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 55/00 Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2310/64 The condition being economic, e.g. tariff based load management
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• 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 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/35 with light sensitive cells
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• 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 70/30 Systems combining energy storage with energy generation of non-fossil origin
• 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 90/16 : 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 20/222 : Demand response systems, e.g. load shedding, peak shaving
• 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
• CPC Class Codes: Y04S 50/10 : Energy trading, including energy flowing from end-user application to grid

Abstract

An energy management system includes an energy management controller and a power conditioning system that charges and discharges a storage battery installed in an electric vehicle. The energy management controller includes: a charge/discharge controller that is configured to, in accordance with an operation mode having an operation right among a plurality of operation modes, control charging and discharging of the storage battery through the power conditioning system; and an operation right granter that is configured to determine an operation mode to which the operation right is to be granted next based on a predetermined transition condition, and to grant the operation right to the operation mode determined thereby.

Claims

1. An energy management controller configured to be installed in a home, the energy management controller comprising:

a charge/discharge controller configured to, in accordance with a current operation mode having an operation right among a plurality of operation modes, control charging and discharging of a storage battery through a power conditioning system that charges and discharges the storage battery, the storage battery being installed in an electric vehicle; and

an operation right granter configured to perform a processing, at a predetermined cycle, of determining a next operation mode to which the operation right is to be granted next among the plurality of operation modes based on a transition condition that indicates a condition under which the operation right transfers among the plurality of operation modes to one another, and granting the operation right to the next operation mode determined by the operation right granter, wherein

the plurality of operation modes comprises a plan operation mode, a calendar operation mode, and a manual operation mode,

under the plan operation mode, charging and discharging of the storage battery are controlled based on a charge/discharge plan preliminarily set by a user among a plurality of charge/discharge plans,

under the calendar operation mode, charging and discharging of the storage battery are controlled based on an event and a start time of the event that are pre-recorded by the user using a calendar recording function, and

under the manual operation mode, charging and discharging of the storage battery are controlled by an operation by the user for commanding starting or stopping of the charging of the storage battery or starting or stopping of the discharging of the storage battery.

2. The energy management controller according to claim 1, wherein

the operation right granter is further configured to grant the operation right to the manual operation mode, upon performance of the manual operation by the user for control of charging and discharging of the storage battery, while the electric vehicle and the power conditioning system are interconnected.

3. The energy management controller according to claim 1, wherein

the operation right granter is further configured to grant the operation right to the plan operation mode:

upon restarting, by the user, of operation in accordance with the charge/discharge plan;

upon cancelation, by the user, of an event that had been recorded by the calendar recording function;

or

when the electric vehicle and the power conditioning system are not interconnected, and a current time is not within a charge time period of the storage battery in the calendar operation mode.

4. The energy management controller according to claim 1, wherein

the operation right granter is further configured to grant the operation right to the calendar operation mode:

when the electric vehicle and the power conditioning system are not interconnected, and a current time is within a charge time period of the storage battery in the calendar operation mode;

or

upon the current time reaching a charge start time of the storage battery in the calendar operation mode.

13. The energy management controller according to claim 1, further comprising

a transition table stored in data memory connected to the charge/discharge controller and the operation right granter via a bus, and

the operation right granter is configured to transition the operation right according to the transition table.

5. An energy management controller configured to be installed in a home for control of charging and discharging of a storage battery through a power conditioning system that charges and discharges the storage battery, the storage battery being installed in an electric vehicle, the energy management controller comprising:

a charge/discharge controller configured to perform a processing, at a predetermined cycle, of granting an operation right to one operation mode based on a transition condition that indicates a condition under which the operation right transfers among a plurality of operation modes to one another, and control charging and discharging of the storage battery through the power conditioning system in accordance with the operation mode to which the operation right is granted, wherein

the plurality of operation modes comprises a plan operation mode, a calendar operation mode, and a manual operation mode,

under the plan operation mode, charging and discharging of the storage battery are controlled based on a charge/discharge plan preliminarily set by a user among a plurality of charge/discharge plans,

under the calendar operation mode, charging and discharging of the storage battery are controlled based on an event and a start time of the event that are pre-recorded by the user using a calendar recording function, and

under the manual operation mode, charging and discharging of the storage battery are controlled by an operation by the user for commanding starting or stopping of the charging of the storage battery or starting or stopping of the discharging of the storage battery, and

the charge/discharge controller is further configured to control charging and discharging of the storage battery in accordance with the calendar operation mode;

when the electric vehicle and the power conditioning system are not interconnected, and a current time is within a charge time period of the storage battery in the calendar operation mode;

or

upon the current time reaching a charge start time of the storage battery in the calendar operation mode.

6. The energy management controller according to claim 5, wherein

the charge/discharge controller is further configured to control charging and discharging of the storage battery in accordance with the manual operation mode, upon performance of the manual operation by the user for control of charging and discharging of the storage battery, while the electric vehicle and the power conditioning system are interconnected.

7. The energy management controller according to claim 5, wherein

the charge/discharge controller is further configured to control charging and discharging of the storage battery in accordance with the plan operation mode:

upon restarting, by the user, of operation in accordance with the charge/discharge plan;

upon cancelation, by the user, of an event that had been recorded by the calendar recording function;

or

when the electric vehicle and the power conditioning system are not interconnected, and a current time is not within a charge time period of the storage battery in the calendar operation mode.

14. The energy management controller according to claim 5, further comprising

a transition table stored in data memory connected to the charge/discharge controller via a bus, and

the charge/discharge controller is configured to transition the operation right according to the transition table.

8. An energy management system, comprising:

an energy management controller configured to be installed in a home; and

a power conditioning system configured to charge and discharge a storage battery installed in an electric vehicle,

wherein the energy management controller comprises;

a charge/discharge controller configured to, in accordance with a current operation mode having an operation right among a plurality of operation modes, control charging and discharging of the storage battery through the power conditioning system; and

an operation right granter configured to perform a processing, at a predetermined cycle, of determining a next operation mode to which the operation right is to be granted next among the plurality of operation modes based on a transition condition that indicates a condition under which the operation right transfers among the plurality of operation modes to one another, and granting the operation right to the next operation mode determined by the operation right granter, wherein

the plurality of operation modes comprises a plan operation mode, a calendar operation mode, and a manual operation mode,

under the plan operation mode, charging and discharging of the storage battery are controlled based on a charge/discharge plan preliminarily set by a user among a plurality of charge/discharge plans,

under the calendar operation mode, charging and discharging of the storage battery are controlled based on an event and a start time of the event that are pre-recorded by the user using a calendar recording function, and

under the manual operation mode, charging and discharging of the storage battery are controlled by an operation by the user for commanding starting or stopping of the charging of the storage battery or starting or stopping of the discharging of the storage battery.

9. The energy management system according to claim 8, further comprising:

a second controller configured to control charging and discharging of the storage battery through the power conditioning system,

wherein the power conditioning system is further configured to, among the energy management controller and the second controller, receive control commands only from the controller acquired a priority right.

10. The energy management system according to claim 9, wherein

the power conditioning system is further configured to, upon receiving an acquisition notification of the priority right, grant the priority right to the controller that is a source of the acquisition notification;

the energy management controller is further configured to, upon satisfaction of a predetermined condition for the energy management controller to acquire the priority right, issue the acquisition notification of the priority right to the power conditioning system; and

the second controller is further configured to, upon satisfaction of a predetermined condition for the second controller to acquire the priority right, issue the acquisition notification of the priority right to the power conditioning system.

15. The energy management system according to claim 8, wherein the energy management controller further comprises

a transition table stored in data memory connected to the charge/discharge controller and the operation right granter via a bus, and

the operation right granter is configured to transition the operation right according to the transition table.

11. A charging and discharging control method comprising:

based on a transition condition that indicates a condition under which an operation right transfers among a plurality of operation modes to one another, performing a processing, at a predetermined cycle, of determining, by an energy management controller configured to be installed in a home, a next operation mode to be next granted the operation right among the plurality of operation modes, and granting the operation right to the next operation mode determined by the energy management controller; and

based on the operation mode having the operation right, controlling, by the energy management controller, charging and discharging of a storage battery through a power conditioning system that charges and discharges of the storage battery, the storage battery being installed in an electric vehicle, wherein

the plurality of operation modes comprises a plan operation mode, a calendar operation mode, and a manual operation mode,

under the plan operation mode, charging and discharging of the storage battery are controlled based on a charge/discharge plan preliminarily set by a user among a plurality of charge/discharge plans,

under the calendar operation mode, charging and discharging of the storage battery are controlled based on an event and a start time of the event that are pre-recorded by the user using a calendar recording function, and

under the manual operation mode, charging and discharging of the storage battery are controlled by an operation by the user for commanding starting or stopping of the charging of the storage battery or starting or stopping of the discharging of the storage battery.

16. The charging and discharging control method according to claim 11, wherein

the determining of the next operation mode occurs according to a transition table stored in data memory of the energy management controller.

12. A non-transitory computer-readable recording medium recording a program to cause a computer, configured to be installed in a home, to function as:

a charge/discharge controller configured to, in accordance with a current operation mode having an operation right among a plurality of operation modes, control charging and discharging of a storage battery through a power conditioning system that charges and discharges the storage battery, the storage battery being installed in an electric vehicle; and

an operation right granter configured to perform a processing, at a predetermined cycle, of determining a next operation mode to which the operation right is to be granted next among the plurality of operation modes based on a transition condition that indicates a condition under which the operation right transfers among the plurality of operation modes to one another, and granting the operation right to the next operation mode determined by the operation right granter, wherein

the plurality of operation modes comprises a plan operation mode, a calendar operation mode, and a manual operation mode,

under the plan operation mode, charging and discharging of the storage battery are controlled based on a charge/discharge plan preliminarily set by a user among a plurality of charge/discharge plans,

under the calendar operation mode, charging and discharging of the storage battery are controlled based on an event and a start time of the event that are pre-recorded by the user using a calendar recording function, and

under the manual operation mode, charging and discharging of the storage battery are controlled by an operation by the user for commanding starting or stopping of the charging of the storage battery or starting or stopping of the discharging of the storage battery.

17. The non-transitory computer-readable recording medium according to claim 12, further comprising:

a transition table, and

the operation right granter is configured to transition the operation right according to the transition table.