Robot apparatus for establishing a charging connection between a charging apparatus and an energy storage unit of a motor vehicle

1. A robot apparatus for establishing a charging connection between a charging device and an energy storage unit of a motor vehicle, the robot apparatus comprising:

a movement unit, by which the robot apparatus is movable in relation to the charging device and the motor vehicle,

a receptacle device in which a charging element of the charging device is detachably receivable and by which the charging element is coupleable to a coupling element of the energy storage unit, wherein the receptacle device comprises a magnetic unit and the charging element comprises a corresponding magnetic element for attaching the charging element to the receptacle device,

a detection unit, by which a position of the coupling element on the motor vehicle is ascertainable, and

a support device, separate from the receptacle device and the charging element, by which the robot apparatus is rigidly and detachably connectable to the motor vehicle.

2. The robot apparatus as claimed in claim 1 , wherein the detection unit comprises a camera for detecting the position of the coupling element.

3. The robot apparatus as claimed in claim 1 , wherein the detection unit is configured to communicate with a transponder arranged on the motor vehicle to detect the position of the coupling element.

4. The robot apparatus as claimed in claim 1 , wherein the movement unit comprises a chassis, by which the robot apparatus is freely movable in a plane, and multiple adjustment elements, by which the receptacle device is adjustable in height and in angle relative to the chassis.

5. The robot apparatus as claimed in claim 1 , wherein the receptacle device is mounted to be rotatable relative to an axis of rotation corresponding to an axis of the charging element.

6. The robot apparatus as claimed in claim 1 , further comprising an opening device by which a cover of the coupling element is operable.

7. The robot apparatus as claimed in claim 6 , wherein the opening device comprises a magnet.

8. A method for establishing, via a robot apparatus, a charging connection between an energy storage unit of a motor vehicle and a charging device for carrying out a charging procedure, the method comprising:

moving the robot apparatus towards the charging device,

receiving, in a receptacle device of the robot apparatus, a charging element of the charging device,

moving the robot apparatus towards the motor vehicle,

detecting, using a detection unit of the robot apparatus, a position of a coupling element of the energy storage unit,

securing the robot apparatus to the motor vehicle using a support device of the robot apparatus,

opening a cover of the coupling element using an opening device of the robot apparatus, and

coupling the charging element to and subsequently releasing the charging element from the coupling element,

wherein the receptacle device comprises a magnetic unit and the charging element comprises a corresponding magnetic element for detachably receiving the charging element in the receptacle device, and

wherein the support device rigidly and detachably secures the robot apparatus to the motor vehicle and the support device is separate from the receptacle device and the charging element.

9. The robot apparatus as claimed in claim 1 , wherein the support device connects to a wheel of the motor vehicle.

10. The robot apparatus as claimed in claim 1 , wherein the support device connects to at least one of a car jack receptacle of the motor vehicle and a door handle of the motor vehicle.

11. The robot apparatus as claimed in claim 1 , wherein the support device grips a tire of the motor vehicle.

12. The method as claimed in claim 8 , wherein the opening device comprises a magnet.

13. The method as claimed in claim 12 , wherein the detection unit ascertains the position of the coupling element via an association rule, in which respective positions of the coupling element are associated with respective motor vehicle types.

14. The method as claimed in claim 12 , wherein the support device connects to a wheel of the motor vehicle.

15. The method as claimed in claim 12 , wherein the support device connects to at least one of a car jack receptacle of the motor vehicle and a door handle of the motor vehicle.

16. The method as claimed in claim 12 , wherein the support device grips a tire of the motor vehicle.