Power management device

• US 9,802,503 B2
• Filed: 11/08/2012
• Issued: 10/31/2017
• Est. Priority Date: 11/08/2011
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: Murayama, Kei
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Perez Borroto, Alfonso
• Application Number:
  US14/356,651
• Publication Number:
  US 20140285001A1
• Time in Patent Office: 1,818 Days
• Field of Search: 307 91
• CPC Class Codes: B60L 2200/12 Bikes
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2240/54 related to batteries
• CPC Class Codes: B60L 2240/547 Voltage
• CPC Class Codes: B60L 2240/549 Current
• CPC Class Codes: B60L 2240/622 by satellite navigation
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/12 by confirmation, e.g. of the input
• CPC Class Codes: B60L 2260/52 drive range estimation, e.g. of estimation of available travel distance
• CPC Class Codes: B60L 2260/54 Energy consumption estimation
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• 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 53/54 Fuel cells
• 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 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 53/67 : Controlling two or more charging stations
• 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 58/13 : Maintaining the SoC within a determined range
• CPC Class Codes: B60L 58/14 : Preventing excessive discharging
• CPC Class Codes: B60L 58/15 : Preventing overcharging
• 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 7/34 : Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: Y02B 70/3225 : Demand response systems, e.g. load shedding, peak shaving
• 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 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

Abstract

In order to manage power exchanged between an electric vehicle 1 and a house system 2 including an electric device 22, a power management device includes a vehicle detection portion 26 configured to detect a vehicle available for a resident of the house. A controller 24 determines power supplied from the electric vehicle 1 to the house system 2 in accordance with the presence of the vehicle detected by the vehicle detection portion 26. The power management device can thereby supply power from an electric vehicle to a house while securing the situation where the resident can move by vehicle in emergencies.

Claims

1. A power management device, which manages power exchanged between an electric vehicle and a house including an electric device, the device comprising:

a vehicle detection portion configured to detect presence of a second vehicle which is available for a resident of the house; and

a power controller configured to determine power supplied from the electric vehicle to the house in accordance with the presence of the second vehicle detected by the vehicle detection portion, wherein

the power controller changes a lower limit of a charge level of the electric vehicle to a predetermined value A in accordance with the presence of the second vehicle detected by the vehicle detection portion and discharges power from the electric vehicle to the house until the charge level reaches the predetermined value A, and

in a case where the presence of the second vehicle is not detected by the vehicle detection portion, the power controller sets the lower limit of the charge level to a predetermined value B higher than the predetermined value A and discharges power from the electric vehicle to the house until the charge level reaches the predetermined value B.

2. The power management device according to claim 1, wherein the vehicle detection portion detects the presence of the second vehicle with a sensor device.

3. The power management device according to claim 1, wherein the vehicle detection portion detects the presence of the second vehicle by communication with the second vehicle.

4. The power management device according to claim 1, wherein the vehicle detection portion detects the presence of the second vehicle through an operation portion operated by a user.

5. The power management device according to claim 1, wherein when the second vehicle is an electric vehicle, the vehicle detection portion detects the presence of the second vehicle based on communication connection for charging and discharging which is performed by the electric vehicle.

6. The power management device according to claim 1, wherein the power controller calculates a cruising distance of the second vehicle detected by the vehicle detection portion and determines power to be supplied from the electric vehicle to the house based on the calculated cruising distance.