Charging Control System, Charging Control Method, and Program

• US 20130335025A1
• Filed: 02/13/2012
• Published: 12/19/2013
• Est. Priority Date: 03/04/2011
• Status: Active Grant

• Current Assignee: NEC Corporation, University of Tokyo
• Original Assignee: NEC Corporation, University of Tokyo
• Inventors: Kuribayashi, Ryosuke, Yano, Hitoshi, Kudo, Koji, Ogimoto, Kazuhiko, Kataoka, Kazuto, Ikegami, Takashi
• Granted Patent: US 9,278,626 B2
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2260/58 Departure time prediction
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/51 Photovoltaic means
• CPC Class Codes: B60L 53/52 Wind-driven generators
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 53/68 Off-site monitoring or control, e.g. remote control
• 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 10/4207 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: H01M 2010/4278 Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• 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

Abstract

A charging control system includes a flattened charging speed calculation unit that calculates a flattened charge speed for fully charging EVs at a constant speed according to permitted charging time for the EVs and the amount of charging required by the EVs; a charging speed calculation unit that calculates a charging speed for the EVs by multiplying the flattened charging speed by a request demand ratio function based on change over time in electric power demand requested from the electric power supply side; and a control unit that controls the charging of the EVs on the basis of the charging speed calculated by the charging speed calculation unit.

Claims

1. A charging control system that controls charging to vehicles that run on electric power comprising:

a flattened charging speed calculation unit that calculates a flattened charging speed for fully charging the vehicles at a fixed speed according to a permitted charging time for said vehicles and an amount of charging that is required by said vehicles;

a charging speed calculation unit that calculates charging speed for the vehicles by multiplying a request demand ratio function that is based on change over time of electric power demand that is requested from the electric power supply side and said flattened charging speed together; and

a control unit that controls charging of the vehicles based on the charging speed that was calculated in said charging speed calculation unit.

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

a request demand ratio function calculation unit that calculates said request demand ratio function based on change over time of electric power demand requested from the electric power supply side;

wherein;

said request demand ratio function calculation unit normalizes said request demand ratio function such that the average value within said permitted charging time is “

1”

; and

said charging speed calculation unit calculates the charging speed for the vehicles by multiplying the request demand ratio function that was normalized and said flattened charging speed.

3. The charging control system according to claim 1, wherein, when a sudden request is made by said electric power supply side to change the charging time, said charging speed calculation unit calculates charging speed for the vehicles by multiplying a correction coefficient that accords with the time change by said request demand ratio function and said flattened charging speed.

4. A charging control method that controls charging of vehicles that run on electric power, comprising processes of:

calculating a flattened charging speed for fully charging the vehicles at a fixed speed according to a permitted charging time for said vehicles and an amount of charging that is requires by the vehicles;

calculating charging speed for the vehicles by multiplying a request demand ratio function that is based on the time change of electric power demand requested from the electric power supply side and said flattened charging speed together; and

controlling charging of the vehicles based on said charging speed that was calculated.

5. A non-transitory computer readable medium storing a program that causes a computer for controlling charging of vehicles that run on electric power to execute procedures of:

calculating a flattened charging speed for fully charging the vehicles at a fixed speed according to permitted charging time for said vehicles and an amount of charging that is required by the vehicles;

calculating charging speed for the vehicles by multiplying a request demand ratio function that is based on time change of electric power demand requested from the electric power supply side and said flattened charging speed together; and

controlling charging of the vehicles based on said charging speed that was calculated.