System for a vehicle

Patent metadata

Field	Value
Publication number	US-11626746-B2
Application number	US-202117551237-A
Country	US
Kind code	B2
Filing date	Dec 15, 2021
Priority date	Mar 15, 2021
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A system for a vehicle, which has a battery, a DC-DC converter, a DC-AC converter, an electric motor, and a switch. The battery is connected to the DC-DC converter and the DC-AC converter is connected to the electric motor. The switch is arranged between the DC-DC converter and the DC-AC converter, and the switch is designed, in a first switching state, to electrically connect the DC-DC converter and the DC-AC converter and to permit an exchange of electrical energy between the battery and the electric motor in order to carry out a traction process. The switch is designed, in a second switching state, to electrically isolate the DC-DC converter and the DC-AC converter, to connect the battery to an electrical charging station, and to permit an exchange of electrical energy between the battery and the electric charging station in order to carry out a charging process.

First claim

The invention claimed is:

1. A system for a vehicle comprising:
a batter;
a DC-DC converter;
a DC-AC converter;
an electric motor; and
a switch, wherein the battery is connected to the DC-DC converter, the DC-AC converter is connected to the electric motor, the switch is arranged between the DC-DC converter and the DC-AC converter, and the switch is configured,
in a first switching state, to electrically connect the DC-DC converter and the DC-AC converter and to permit an exchange of electrical energy between the battery and the electric motor in order to carry out a traction process, and the switch is configured,
in a second switching state, to electrically isolate the DC-DC converter and the DC-AC converter, to connect the battery to an electrical charging station, and to permit an exchange of electrical energy between the battery and the electric charging station in order to carry out a charging process, wherein the first switching state of the switch is set automatically while the vehicle is in motion and the second switching state of the switch is set automatically during the charging process of the vehicle.

2. The system according to claim 1 , which has a charging plug which is connected to the switch, wherein the switch is further configured, in the second switching state, to connect the battery to the charging station via the DC-DC converter and the charging plug.

3. The system according to claim 1 , wherein the switch is further configured to increase or decrease an electrical voltage.

4. The system according to claim 1 , which has a mechanism which is configured to detect a change between the traction process and the charging process and vice versa and to automatically set a respectively provided switching state for the switch.

5. The system according to claim 1 , which is configured for a combined charging and traction network of the vehicle.

6. A method for supplying a vehicle with electrical energy, with a system having a battery, a DC-DC converter, a DC-AC converter, an electric motor, and a switch, wherein the battery is connected to the DC-DC converter and the DC-AC converter is connected to the electric motor, wherein the switch is arranged between the DC-DC converter and the DC-AC converter, the method comprising:
electrically connecting the DC-DC converter and the DC-AC converter with the switch, in a first switching state, wherein the switch enables an exchange of electrical energy between the battery and the electric motor in order to carry out a traction process; and
electrically isolating the DC-DC converter and the DC-AC converter and connecting the battery to an electrical charging station with the switch, in a second switching state, wherein the switch enables an exchange of electrical energy between the battery and the electric charging station in order to carry out a charging process, wherein the first switching state of the switch is set automatically while the vehicle is in motion and the second switching state of the switch is set automatically during the charging process of the vehicle.

7. The method according to claim 6 , further comprising: setting the first switching state of the switch while the vehicle is in motion; and setting the second switching state while the vehicle is being charged.

8. The method according to claim 6 , further comprising: setting the second switching state automatically for the switch when a charging cover of the system is opened and/or when a charging plug of the system has contact with the charging station.

9. The system according to claim 2 , wherein the switch is further configured to increase or decrease an electrical voltage.

10. The system according to claim 2 , which has a mechanism which is configured to detect a change between the traction process and the charging process and vice versa and to automatically set a respectively provided switching state for the switch.

11. The system according to claim 3 , which has a mechanism which is configured to detect a change between the traction process and the charging process and vice versa and to automatically set a respectively provided switching state for the switch.

12. The system according to claim 2 , which is configured for a combined charging and traction network of the vehicle.

13. The system according to claim 3 , which is configured for a combined charging and traction network of the vehicle.

14. The system according to claim 4 , which is configured for a combined charging and traction network of the vehicle.

15. The method according to claim 7 , further comprising:
setting the second switching state automatically for the switch when a charging cover of the system is opened and/or when a charging plug of the system has contact with the charging station.

Assignees

• Audi Ag

Inventors

• Feldmann Uwe
• Honkomp Franz

Classifications

• H02J7/865 Primary

  Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence) · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• B60L2210/10

  DC to DC converters · CPC title