Method and apparatus for providing electrical energy

• US 9,283,863 B2
• Filed: 05/04/2011
• Issued: 03/15/2016
• Est. Priority Date: 05/04/2011
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Eger, Kolja, Kepka, Alexander, Zwirlein, Andreas
• Primary Examiner(s): Lin, Sun
• Application Number:
  US14/115,606
• Publication Number:
  US 20140084874A1
• Time in Patent Office: 1,777 Days
• Field of Search: 320/137
• US Class Current: 1/1
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/67 Controlling two or more charging stations
• CPC Class Codes: H02J 13/00016 using a wired telecommunication network or a data transmission bus
• CPC Class Codes: H02J 13/00024 by means of mobile telephony
• CPC Class Codes: H02J 13/00034 the elements or equipment being or involving an electric power substation
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 2310/60 Limiting power consumption in the network or in one section of the network, e.g. load shedding or peak shaving
• CPC Class Codes: H02J 3/144 Demand-response operation of the power transmission or distribution network
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• 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 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
• CPC Class Codes: Y04S 40/124 : using wired telecommunication networks or data transmission busses
• CPC Class Codes: Y04S 40/126 : using wireless data transmission

Abstract

In a charging management system for electrical vehicles, a maximum charging current for a plurality of charging operations, e.g., for a plurality of charging stations and/or a plurality of electrical vehicles, is coordinated in a centralized or a decentralized manner while complying with predefined flexibly adjustable secondary conditions. The secondary conditions can include economic and/or technical stipulations. In addition to a centralized load management system, a decentralized load management facility carries out a load distribution via a master charging station or autonomously by each charging station itself. If the master charging station fails, a changeover is made to a backup master charging station. The method can be used, for example, in electrical mobility, in particular the electrification of individual traffic.

Claims

1. A method for providing electrical energy, comprising:

communicating a status change from at least one charging station to a charging system;

determining by the charging system a load distribution;

communicating the load distribution from the charging system to the at least one charging station; and

providing the electrical energy by the at least one charging station in accordance with the load distribution.

2. The method as claimed in claim 1, wherein the load distribution is determined on the basis of at least one secondary condition and a number of connected or active charging stations.

3. The method as claimed in claim 2, wherein the at least one secondary condition includes at least one of a preset maximum permissible capacity, a weighting factor or a prioritization, and a maximum permissible charging current per at least one of each charging operation, base station or electric vehicle.

4. The method as claimed in claim 3, wherein the preset maximum permissible capacity includes at least one of

a preset maximum permissible capacity of the charging station,

a preset maximum permissible capacity of a cable,

a preset maximum permissible capacity of a transformer,

a preset maximum permissible capacity of a distribution substation,

a preset maximum permissible capacity in accordance with an agreement or contract,

a preset maximum permissible capacity of an electric vehicle,

a preset maximum permissible capacity of an energy source,

a preset maximum permissible capacity of a virtual power plant corresponding to an aggregation of a multiplicity of energy sources.

5. The method as claimed in claim 4, wherein the charging system is a central charging system.

6. The method as claimed in claim 4, wherein the charging system is provided by a master charging station.

7. The method as claimed in claim 6, wherein the master charging station is detected using an identifier.

8. The method as claimed in claim 6, further comprising implementing at least one of configuration and parameterization of the master charging station using a central component.

9. The method as claimed in claim 8, further comprising determining at least one backup master charging station.

10. The method as claimed in claim 9,

further comprising communicating any status change from the master charging station to the at least one backup master charging station, and

wherein the at least one backup master charging station determines the load distribution based on the status change.

11. The method as claimed in claim 9, wherein the master charging station communicates the determined load distribution to the at least one backup master base station.

12. The method as claimed in claim 11, further comprising activating a next backup master charging station upon a failure of the master charging station.

13. The method as claimed in claim 12, wherein a reactivated former master charging station is initially not used again as the master charging station.

14. The method as claimed in claim 4,

wherein the charging system is decentralized from each charging station, and

said method further comprises adjusting electrical energy output by each charging station based on estimations which are ascertained owing to information or messages from other charging stations.

15. The method as claimed in claim 14, wherein at least one electric vehicle is charged using the electrical energy provided.

16. An apparatus for providing electrical energy, comprising:

a processing unit programmed to perform operations including communicating a status change to a charging system to enable a load distribution to be ascertained by the charging system and the electrical energy provided in accordance with the load distribution.

17. The apparatus as claimed in claim 16, wherein the apparatus is a charging station that charges an electric vehicle.