POWER EXCHANGE SYSTEM

• US 20120086397A1
• Filed: 10/04/2011
• Published: 04/12/2012
• Est. Priority Date: 10/06/2010
• Status: Active Grant

• Current Assignee: DENSO Corporation
• Original Assignee: DENSO Corporation
• Inventors: OBAYASHI, Kazuyoshi, SAKAMOTO, Akira
• Granted Patent: US 8,581,545 B2
• Time in Patent Office: Days
• US Class Current: 320/109
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/51 Photovoltaic means
• 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: H02J 2300/24 of photovoltaic origin
• CPC Class Codes: H02J 2300/28 The renewable source being wind energy
• 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: Y02E 10/56 Power conversion systems, e.g. maximum power point trackers
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• 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 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 power exchange system for exchanging power between a power supply system of an installation and a battery of a vehicle includes an installation-side charger/discharger, a vehicle-side charger/discharger coupled to the installation-side charger/discharger to exchange the power, and a vehicle-side controller having a determination section and a setting section. The determination section determines whether the installation is equipped with an installation-side controller that controls power distribution in the power supply system. The setting section sets one of the installation-side controller and the vehicle-side controller as a power command center based on a result of determination by the determination section. The power command center commands one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery based on information of the battery and information of the power supply system.

Claims

1. A power exchange system for managing an exchange of power between a power supply system of an installation and a battery of a vehicle, the power exchange system comprising:

an installation-side charger/discharger provided in the installation;

a vehicle-side charger/discharger provided in the vehicle and coupled to the installation-side charger/discharger to exchange the power between the power supply system and the battery; and

a vehicle-side controller provided in the vehicle and configured to receive battery information regarding the battery, the vehicle-side controller having a determination section for determining whether the installation is equipped with an installation-side controller that controls power distribution in the power supply system, the vehicle-side controller further having a setting section for setting one of the installation-side controller and the vehicle-side controller as a power command center based on a result of determination by the determination section, wherein

the power command center commands one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery based on the battery information and installation-side information regarding the power supply system.

2. The power exchange system according to claim 1, wherein

when the result of determination by the determination section indicates that the installation is equipped with the installation-side controller, the setting section sets the home-side controller as the power command center.

3. The power exchange system according to claim 1, wherein

when the result of determination by the determination section indicates that the installation is not equipped with the installation-side controller, the setting section sets the vehicle-side controller as the power command center.

4. The power exchange system according to claim 1, wherein

the power command center has a first mode for charging the battery to a predetermined target level by a predetermined target time and a second mode for charging the battery at a predetermined physical value,

in the first mode, the power command center receives the target level and the target time from an information acquisition section and creates a charge/discharge plan based on the target level, the target time, the battery information, and the installation-side information,

the power command center commands the one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery according to the charge/discharge plan so that the battery is charged to the target level by the target time, and

the charge/discharge plan includes at least one of a power value, a current value, and a voltage value.

5. The power exchange system according to claim 1, wherein

the power command center has a first mode for charging the battery to a predetermined target level by a predetermined target time and a second mode for charging the battery at a predetermined physical value,

in the second mode, the power command center creates the physical value based on the battery information and the installation-side information,

the power command center commands the one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery at the physical value, and

the physical value is one of a power value, a current value, and a voltage value.

6. The power exchange system according to claim 5, wherein

the power command center is placed in the second mode at a regular interval to evaluate performance of the battery.

7. The power exchange system according to claim 1, wherein

the power command center calculates a maximum exchangeable power, a chargeable/dischargeable energy upper limit, and a chargeable/dischargeable energy lower limit based on the battery information and the installation-side information and commands the one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery within the maximum exchangeable power, the chargeable/dischargeable energy upper limit and the chargeable/dischargeable energy lower limit.

8. The power exchange system according to claim 7, wherein

the power command center receives a conversion rating of the one of the installation-side charger/discharger and the vehicle-side charger/discharger and commands the one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery within the conversion rating.

9. The power exchange system according to claim 1, wherein

when at least one of the battery information and the installation-side information is unavailable, the power command center commands the one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery based on a predetermined default value.

10. The power exchange system according to claim 1, further comprising:

a display for displaying an electric bill associated with the exchange of power between the installation and the vehicle.

11. The power exchange system according to claim 1, wherein

the power command center commands the one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery based on the battery information, the installation-side information, and at least one of vehicle load prediction information and charge request information,

the vehicle load prediction information indicates a feature load condition of the vehicle, and

the charge request is input through an input section by an user to charge the battery.

12. The power exchange system according to claim 11, wherein

the input section includes at least one of a cell phone and a personal computer connected to a network.