CHARGED POWER CONTROL SYSTEM

• US 20140015319A1
• Filed: 03/02/2012
• Published: 01/16/2014
• Est. Priority Date: 03/03/2011
• Status: Abandoned Application

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Nyu, Takayuki
• Application Number:
  US14/002,639
• Publication Number:
  US 20140015319A1
• Time in Patent Office: Days
• US Class Current: 307/31
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks
• 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 7/00036 Charger exchanging data with battery
• CPC Class Codes: H02J 7/00047 with provisions for charging different types of batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• 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 10/92 Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
• CPC Class Codes: Y02T 90/12 Electric charging stations
• 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

Provided is a charged power control system which includes a plurality of chargers 2-1, 2-2, . . . , and 2-N, a switchboard 101 configured to receive electric power from a power network 20 and supply the electric power to the plurality of chargers and electrical installations 1-1, 1-2, 1-3, . . . , and 1-M other than the chargers, a first power measuring unit 102 configured to measure consumed power of the electrical installations other than the chargers, a second power measuring unit 103 configured to measure consumed power of the respective chargers, an AC/DC conversion unit 104 configured to convert the electric power supplied from the switchboard 101 from an alternating current into a direct current and supply the resulting electric power to the chargers, and a power control unit 403 configured to determine allocated power to the charger on the basis of the consumed power of the other chargers and the electrical installations other than the chargers and conversion efficiency of the AC/DC conversion unit 104. The charger includes a charger control unit 201 configured to receive a notification of the allocated power and determine, within a range not exceeding the allocated power, a charging current supplied to a secondary battery connected thereto.

Claims

1. A charged power control system comprising:

a plurality of chargers;

a switchboard configured to receive electric power from a power network and supply the electric power to the plurality of chargers and electrical installations other than the chargers;

a first power measuring unit configured to measure consumed power of the electrical installations other than the chargers;

a second power measuring unit configured to measure consumed power of the respective chargers;

an AC/DC conversion unit configured to convert the electric power supplied from the switchboard from an alternating current into a direct current and supply the resulting electric power to the chargers; and

a power control unit configured to determine allocated power to the charger on the basis of the consumed power of the other chargers and the electrical installations other than the chargers and conversion efficiency of the AC/DC conversion unit, wherein

the charger includes a charger control unit configured to receive a notification of the allocated power and determine, within a range not exceeding the allocated power, a charging current supplied to a secondary battery connected thereto.

2. The charged power control system according to claim 1, wherein the power control unit determines the allocated power according to a policy set in advance.

3. The charged power control system according to claim 2, wherein the policy is such that, when surplus power is generated, the surplus power is equally distributed to all the chargers to which secondary batteries are connected.

4. The charged power control system according to claim 2, wherein the policy is such that non-zero electric power is allocated, as an initial value, to all the chargers to which secondary batteries are connected.

5. The charged power control system according to claim 2, wherein the policy is such that, when surplus power is generated, the surplus power is distributed to the charger according to a characteristic of a charging service user connecting a secondary battery thereto.

6. The charged power control system according to claim 5, wherein the characteristic of the charging service user is at least one from among whether member or not, male or female, member grade, and whether selecting also a service other than the charging service.

7. The charged power control system according to claim 2, wherein the power control unit performs redistribution of the electric power to the respective chargers triggered by a charging state notification periodically made by the chargers or a measurement result notification of the consumed power of the electrical installations other than the chargers measured by the first power measuring unit.