System for charging an electric vehicle, electric vehicle and method

Patent metadata

Field	Value
Publication number	US-2016200208-A1
Application number	US-201414917180-A
Country	US
Kind code	A1
Filing date	Jul 3, 2014
Priority date	Sep 5, 2013
Publication date	Jul 14, 2016
Grant date	—

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which is designed to control, in accordance with the first and/or second characteristic variables, the charge power withdrawn from an energy supply network by the electric vehicle by means of the charging interface.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

First claim

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in accordance with the first characteristic variables, the second characteristic variables, or both, the charge power withdrawn from an energy supply network by the electric vehicle by means of the charging interface.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

Assignees

• Bosch Gmbh Robert

Inventors

• Faye Ian
• Eckert Bernd

Classifications

• B60L3/08

  Means for preventing excessive speed of the vehicle · CPC title

• H02J2105/37

  exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV] · CPC title

• H02J13/1335

  involving a local wireless network, e.g. Wi-Fi®, ZigBee® or Bluetooth® · CPC title

• H02J13/1333

  by means of mobile telephony · CPC title

• H02J2105/52

  for limitation of the power consumption in the networks or in one section of the networks, e.g. load shedding or peak shaving · CPC title