Controlling the temperature of a charging cable for a fast charging station for vehicles with an electric drive

Patent metadata

Field	Value
Publication number	US-11220184-B2
Application number	US-201816217565-A
Country	US
Kind code	B2
Filing date	Dec 12, 2018
Priority date	Jan 15, 2018
Publication date	Jan 11, 2022
Grant date	Jan 11, 2022

Abstract

A method for controlling the temperature of a changing cable of a fast charging station for fast charging a battery of a vehicle with an electric drive. The method includes the steps of heating the charging cable in order to form an electrical connection of the charging cable to the vehicle, sensing connection of the charging cable to the vehicle, and ending the heating of the charging cable for fast charging the battery of the vehicle. A fast charging station has a charging cable for fast charging a battery of a vehicle with an electric drive. The fast charging station is designed to carry out the above method for controlling the temperature of a charging cable.

First claim

What is claimed is:

1. A method for controlling a temperature of a charging cable of a fast charging station for fast charging a battery of a vehicle with an electric drive, comprising the steps of:
heating a length of the charging cable by activating a heating device that extends along the length of the charging cable, which consequently reduces a rigidity of the length of the charging cable to a pre-determined extent, in preparation for an electrical connection between the charging cable and the vehicle,
sensing the electrical connection between the charging cable and the vehicle, and
upon sensing the electrical connection, ending the heating of the charging cable for fast charging the battery of the vehicle.

2. The method as claimed in claim 1 , further comprising pre-heating the charging cable.

3. The method as claimed in claim 1 , further comprising sensing imminent connection of the charging cable to the vehicle, and
wherein the step of heating the charging cable in order to form an electrical connection with the vehicle takes place after the sensing of imminent connection of the charging cable to the vehicle.

4. The method as claimed in claim 3 , wherein the step of sensing imminent connection of the charging cable to the vehicle comprises sensing an approaching of the vehicle to the fast charging station.

5. The method as claimed in claim 1 , wherein the step of sensing connection between the charging cable and the vehicle comprises evaluating an electrical signal between the charging station and the vehicle via the charging cable.

6. The method as claimed in claim 1 , wherein the step of sensing connection between the charging cable and the vehicle comprises sensing an expiry of a connection timer.

7. The method as claimed in claim 1 , wherein the method further comprises
sensing imminent disconnection between the charging cable and the vehicle, and
heating the charging cable to bring about disconnection of the charging cable from the vehicle.

8. The method as claimed in claim 7 , wherein the step of sensing imminent disconnection between the charging cable and the vehicle comprises sensing an end of the charging process.

9. The method as claimed in claim 1 , wherein the step of sensing imminent disconnection between the charging cable and the vehicle comprises sensing a signal or sensing an activation by a driver of the vehicle.

10. A fast charging station comprising a charging cable for fast charging a battery of a vehicle with an electric drive, wherein the fast charging station is configured for controlling a temperature of a charging cable by
(i) heating a length of the charging cable by activating a heating device that extends along the length of the charging cable, which consequently reduces a rigidity of the length of the charging cable to a pre-determined extent, in preparation for an electrical connection between the charging cable and the vehicle,
(ii) sensing the electrical connection between the charging cable and the vehicle, and
(iii) upon sensing the electrical connection, ending the heating of the charging cable for fast charging the battery of the vehicle.

11. The method of claim 1 , wherein the heating device is a heating element that is connected to a conductor that extends along the length of the charging cable.

12. The method of claim 1 , wherein the heating device is a coolant circuit that extends along the length of the charging cable.

13. The method of claim 1 , wherein the heating device is either (i) a heating element that is connected to a conductor that extends along the length of the charging cable, or (ii) a coolant circuit that extends along the length of the charging cable.

14. The fast charging station of claim 10 , wherein the heating device is a heating element that is connected to a conductor that extends along the length of the charging cable.

15. The fast charging station of claim 10 , wherein the heating device is a coolant circuit that extends along the length of the charging cable.

16. The fast charging station of claim 10 , wherein the heating device is either (i) a heating element that is connected to a conductor that extends along the length of the charging cable, or (ii) a coolant circuit that extends along the length of the charging cable.

Assignees

• Porsche Ag

Inventors

• Reber Volker
• Götz Stefan
• Rönfanz Jari

Classifications

• H05B3/12

  characterised by the composition or nature of the conductive material · CPC title

• B60L1/02 Primary

  to electric heating circuits · CPC title

• B60L53/18

  Cables specially adapted for charging electric vehicles · CPC title

• B60L5/02 Primary

  with ice-removing device · CPC title

• Y02T90/16

  Information or communication technologies improving the operation of electric vehicles · CPC title