SYSTEM FOR CHARGING AN ELECTRIC VEHICLE, ELECTRIC VEHICLE AND METHOD

• US 20160200208A1
• Filed: 07/03/2014
• Published: 07/14/2016
• Est. Priority Date: 09/05/2013
• Status: Active Grant

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: FAYE, Ian, ECKERT, Bernd
• Granted Patent: US 10,421,371 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2240/70 Interactions with external data bases, e.g. traffic centres
• CPC Class Codes: B60L 3/08 Means for preventing excessive speed of the vehicle
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/68 Off-site monitoring or control, e.g. remote control
• CPC Class Codes: H02J 13/00024 by means of mobile telephony
• CPC Class Codes: H02J 13/00026 involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
• 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: 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 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 40/126 : using wireless data transmission

Abstract

The invention relates to a system for charging an electric vehicle, comprising a measuring device which is designed to measure a charge voltage on a charging interface of the electric vehicle, an evaluation device which is designed to determine first characteristic variables from the measured charge voltage, a communication device which is designed to transfer the first characteristic variables to other electric vehicles and/or to capture, from the other electric vehicles, second characteristic variables relating to charge voltages of the other electric vehicles, a control device which is designed to control, in accordance with the first and/or second characteristic variables, the charge power withdrawn from an energy supply network by the electric vehicle by means of the charging interface. The invention also relates to an electric vehicle and a method.

Claims

1. A system for charging an electric vehicle, the system comprising;

a measuring device which is designed to measure a charge voltage on a charging interface of the electric vehicle;

an evaluation device which is designed to determine first characteristic variables from the measured charge voltage;

a communication device configured to transfer the first characteristic variables to other electric vehicles, to capture, from the other electric vehicles, second characteristic variables relating to charge voltages of the other electric vehicles, or both;

a control device which is configured to control, in accordance with the first characteristic variables, the second characteristic variables, or both, the charge power withdrawn from an energy supply network by the electric vehicle by means of the charging interface.

2. The system according to claim 1,

wherein the first characteristic variables, the second characteristic variables, or both comprise at least the phase position of the charge voltage.

3. The system according to claim 2,

wherein the control device configured to determine on the basis of the phase position whether the electric vehicle and at least one of the other electric vehicles are coupled to the same electrical phase of the energy supply network.

4. The system according to claim 3,

wherein the control device is designed to control the withdrawn charge power in accordance with the number of the other electric vehicles coupled to the same phase of the energy supply network.

5. The system according to claim 1,

wherein the first characteristic variables, the second characteristic variables, or both comprise the amount of the charge voltage.

6. The system according to claim 5,

wherein the control device is designed to control the withdrawn charge power in accordance with the amount of the charge voltage.

7. The system according to claim 1,

wherein the communication device is configured as a wireless communication device;

and/or

in that the communication device is designed to establish a local, ad hoc communication between the electric vehicle and other electric vehicles; and

/or

in that the communication device is designed to establish a server-based communication between the electric vehicle and other electric vehicles.

8. The system according to claim 1,

wherein the control device is configured to transmit a possible departure time of the electric vehicle, to transmit a cruising range required for the electric vehicle by means of the communication device to other electric vehicles and to capture via the communication device possible departure times of the other electric vehicles and/or cruising ranges required for the other electric vehicles;

and in that control device is designed to carry out, in accordance with the possible departure times of the electric vehicle and the other electric vehicles and/or in accordance with a required cruising range for the electric vehicle and the other electric vehicles, a prioritization of the electric vehicles and to control the withdrawn charge power as a function of the prioritization.

9. The system according to claim 1,

wherein the control device is configured to determine a position of the electric vehicle and to exchange the first characteristic variables, the second characteristic variables, or both via the communication device only with other electric vehicles which are located within a predetermined radius around the electric vehicle.

10. An electric vehicle (2) comprising,

a charging interface (5);

and

a charging device, which has a system according to claim 1.

11. A method for charging an electric vehicle comprising:

measuring a charge voltage on a charging interface of the electric vehicle;

determining first characteristic variables from the measured charge voltage;

transferring the first characteristic variables to other electric vehicles; and

/or capturing, from the other electric vehicles, second characteristic variables relating to charge voltages of the other electric vehicles;

controlling, in accordance with the first characteristic variables, the second characteristic variables, or both the charge power withdrawn from an energy supply network by the electric vehicle by means of the charging interface.

12. The method according to claim 11,

wherein the first characteristic variables, the second characteristic values variables, or both comprise at least the phase position of the charge voltage;

and

wherein it is determined when controlling on the basis of the phase position whether the electric vehicle and at least one of the other electric vehicles are coupled to the same electrical phase of the energy supply network; and

the withdrawn charge power is controlled in accordance with the number of the other electric vehicles coupled to the same phase of the energy supply network.

13. The method according to claim 11,

wherein the first characteristic variables, the second characteristic variables, or both comprise the amount of the charge voltage;

and

wherein the withdrawn charge power is controlled as a function of the amount of the charge voltage.

14. The method according to claim 11,

wherein a possible departure time of the electric vehicle, a cruising range required for the electric vehicle or both are transmitted via the communication device to other electric vehicles;

and/or

wherein possible departure times of the other electric vehicles, cruising ranges required for the other electric vehicles, or both are captured; and

wherein the electric vehicles are prioritized in accordance with the possible departure times of the electric vehicle and the other electric vehicles and/or a required cruising range for the electric vehicle and the other electric vehicles, and the withdrawn charge power is controlled as a function of the prioritization.

15. The method according to claim 11,

wherein a position of the electric vehicle is determined and the characteristic variables are exchanged only with other electric vehicles which are located within a predetermined radius around the electric vehicle.