IP Library › Granted Patent US 12,344,114
Granted Patent B2
US 12,344,114 · App. 17/591,595 · Granted Jul 1, 2025

Charging plug

Inventors: Max Gerstadt (Stuttgart, DE); Walter Krepulat (Stuttgart, DE)
Assignee: Mahle International GmbH
B60L53/62B60L53/16B60L53/18H01R13/7175
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Quick Facts
Patent No.
US 12,344,114
App. No.
17/591,595
Granted
Jul 1, 2025
Kind
B2
Abstract

A charging plug for a charging cable for an electric vehicle is disclosed. The charging plug includes a charge indicator provided on the charging plug. The charge indicator is configured such that it indicates a charging progress. The charging plug is used, e.g., in connection with a charging station for an electric vehicle.

Claims (33)

1. A charging plug for a charging cable for an electric vehicle, comprising:

a charge indicator provided on a portion thereof, the charge indicator comprising a light-emitting diode (LED);

wherein the charge indicator includes an indication of an amount of energy transmitted via the charging plug in kilowatt hours (kWh);

a secondary conductor, wherein an inductive supply of the charge indicator with electric energy takes place via the secondary conductor that is inductively coupled to a primary conductor, wherein the secondary conductor is situated in the charging plug; and

wherein the LED is connected to the secondary conductor.

2. The charging plug according to claim 1 , wherein the charge indicator is configured such that it indicates a charging progress.

3. The charging plug according to claim 1 , wherein the charge indicator comprises a display including at least one of a loading bar and a percentage indication.

4. The charging plug according to claim 3 , wherein

the display is structured flat or bent or has a bent covering.

5. The charging plug according to claim 1 , wherein:

current flowing through the secondary conductor causes the LED to flicker, whereby the quicker the electric vehicle charges, the more rapidly the LED flickers.

6. The charging plug according to claim 1 , wherein the primary conductor is a phase conductor or a neutral conductor.

7. The charging plug according to claim 1 , wherein the secondary conductor is a wire that is wound about the primary conductor, wherein the wire of the secondary conductor runs parallel to the primary conductor.

8. The charging plug according to claim 1 , wherein the light-emitting diode is connected directly to the secondary conductor.

9. A charging cable, comprising:

a charging plug including a charge indicator provided on the charging plug, the charge indicator comprising a light-emitting diode (LED);

wherein the charge indicator includes an indication of an amount of energy transmitted via the charging plug in kilowatt hours (kWh);

a secondary conductor, wherein an inductive supply of the charge indicator with electric energy takes place via the secondary conductor that is inductively coupled to a primary conductor, wherein the secondary conductor is situated in the charging plug; and

wherein the LED is connected to the secondary conductor.

10. The charging cable according to claim 9 , wherein the charge indicator comprises a display including at least one of a loading bar and a percentage indication.

11. The charging cable according to claim 9 , wherein the charge indicator further comprises an indication for energy in kWh transmitted via the charging plug.

12. The charging cable according to claim 9 , wherein the secondary conductor is a wire that is wound about the primary conductor, wherein the wire of the secondary conductor runs parallel to the primary conductor.

13. The charging cable according to claim 9 , wherein the light-emitting diode is connected directly via a ballast resistor to the secondary conductor.

14. The charging cable according to claim 9 , wherein the primary conductor is a phase conductor or a neutral conductor.

15. A charging station for an electric vehicle, comprising:

a charging cable including a charging plug, the charging plug including a charge indicator provided on the charging plug, the charge indicator including a light-emitting diode (LED);

wherein the charging plug further includes a secondary conductor for inductively supplying energy to the charge indicator, wherein the LED flickers when current flows through the secondary conductor, whereby the quicker the electric vehicle charges, the more rapidly the LED flickers; and

wherein the secondary conductor is situated in the charging plug.

16. The charging station according to claim 15 , wherein charge indicator comprises a display including at least one of a loading bar and a percentage indication, and wherein a supply of the charge indicator with electric energy takes place conductively or inductively.

17. The charging plug according to claim 1 , wherein the light-emitting diode is connected via a ballast resistor to the inductively coupled secondary conductor.

18. The charging station according to claim 15 , wherein the secondary conductor is inductively coupled to a primary conductor in the charging plug.

19. The charging station according to claim 18 , wherein the secondary conductor is a wire that is wound about the primary conductor, and wherein the wire of the secondary conductor runs parallel to the primary conductor.

20. The charging station according to claim 18 , wherein the primary conductor is a phase conductor or a neutral conductor.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 6, 2023
From: GERSTADT, MAX; KREPULAT, WALTER
To: MAHLE INTERNATIONAL GMBH
Reel/Frame 064814/0201 →
Priority Claims (1)
DE 102021200966.2 · Feb 3, 2021 · national
Continuity (1)
Related Publication 20220242265A1 · Aug 4, 2022
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