Method for detecting a plug-in operation

1. A method for detecting a plug operation of a charging plug in a charging socket of an electrically drivable vehicle, comprising:

detecting the plug operation by detecting an amplitude change of a control signal on a control signal line of the charging plug, wherein the control signal line is configured to transmit control signals between the electrically drivable vehicle and a charging station;

detecting a number of plug cycles by counting a number of detected plug operations; and

signaling an approaching of a predetermined number of plug operations to a user via an optical indicator in the electrically drivable vehicle, an acoustic indicator in the electrically drivable vehicle, a haptic indicator in the electrically drivable vehicle, the charging station, the charging plug, or any combination thereof.

2. The method according to claim 1 , wherein the charging plug comprises a proximity pilot (PP) line and a control pilot (CP) line, the control signal line connecting the CP line of the charging plug, and wherein the control signal is the CP control signal.

3. The method according to claim 1 , wherein detecting the plug operation comprises a change of a voltage amplitude of the control signal.

4. The method according to claim 1 , wherein the detecting the amplitude change of the control signal of the charging plug to detect the plug operation comprises detecting an amplitude change satisfying at least one threshold.

5. The method according to claim 1 , wherein detecting the amplitude change is performed in one or more of: the charging plug, or in the charging socket, or in the electrically drivable vehicle.

6. The method according to claim 1 , wherein the detection of the amplitude change comprises a signal measurement on the control signal line, in particular a voltage measurement.

7. The method according to claim 1 , wherein the amplitude change is detected capacitively or based on resistance.

8. The method according to claim 1 , further comprising emitting a reference signal via a communication interface, wherein the reference signal indicates the detected plug operation or the number of detected plug operations.

9. The method according to claim 1 , further comprising preventing a charging operation after reaching a threshold number of plug operations.

10. A device for detecting a plug operation of a charging plug in a charging socket of an electrically drivable vehicle, comprising:

an electrical circuit configured to:

detect the plug operation by detecting an amplitude change of a control signal on a control signal line of the charging plug, wherein the control signal line of the charging plug is configured to carry control signals between the electrically drivable vehicle and a charging station;

detect a number of plug cycles by counting a number of detected plug operations; and

signal an approaching of a predetermined number of plug operations to a user via an optical indicator in the electrically drivable vehicle, an acoustic indicator in the electrically drivable vehicle, a haptic indicator in the electrically drivable vehicle, the charging station, the charging plug, or any combination thereof.

11. The device according to claim 10 , wherein the electrical circuit is further configured to measure a change in an amplitude of the control signal by at least a threshold amount.

12. The device according to claim 10 , wherein the electrical circuit is further configured to detect the amplitude change capacitively or based on resistance.

13. The device according to claim 10 , further comprising a communication interface, configured to emit a notification signal which indicates the detected plug operation or the number of detected plug operations.

14. The device according to claim 10 , wherein the electrical circuit is further configured to detect the number of detected plug operations.

15. A charging component for an electrically drivable vehicle, comprising:

a charging interface comprising one or more of: a charging plug or a charging socket; and

an electrical circuit configured to:

detect a plug operation by detecting an amplitude change of a control signal on a control signal line of the charging plug, wherein the control signal line of the charging plug is configured to carry control signals between the electrically drivable vehicle and a charging station;

detect a number of plug cycles by counting a number of detected plug operations; and

signal an approaching of a predetermined number of plug operations to a user via an optical indicator in the electrically drivable vehicle, an acoustic indicator in the electrically drivable vehicle, a haptic indicator in the electrically drivable vehicle, the charging station, the charging plug, or any combination thereof.

16. The charging component of claim 15 , wherein the electrical circuit is further configured to measure a change in an amplitude of the control signal by at least a threshold amount.

17. The charging component of claim 15 , wherein the electrical circuit is further configured to detect the amplitude change capacitively or based on resistance.

18. The method of claim 4 , wherein the at least one threshold comprises one or more of: a 5V threshold, an 8V threshold, or a 9V threshold.

19. The method of claim 8 , wherein the communication interface is a near field communication interface.