Charging device for charging a battery of a motor vehicle

1 . A charging device for charging a battery of a motor vehicle, comprising a ground unit for arrangement on the ground of a motor vehicle parking space, wherein the ground unit has a contacting arm, at a free end of which is arranged a contacting device for contacting a contacting unit in the motor vehicle, the contacting unit being complementary to the contacting device,

wherein the contacting arm has a main link which can pivot about a vertical pivot axis.

2 . The charging device as claimed in claim 1 , wherein the main link is attached to the ground unit so as to be pivotable about the vertical pivot axis.

3 . The charging device as claimed in claim 2 , wherein the contacting arm has a lifting link pivotable about a horizontal axis.

4 . The charging device as claimed in claim 3 , wherein the contacting arm has a secondary link pivotable about a vertical pivot axis, wherein the secondary link is at least one of: attached at a free end of the main link via the vertical pivot axis and attached to a lifting link via a horizontal pivot axis.

5 . The charging device as claimed in claim 4 , wherein a drive is provided which is configured to at least one of: pivot the main link about its vertical pivot axis, pivot the secondary link about its vertical pivot axis, and and/or that a drive ( 46 ) is provided which is configured to pivot the lifting link about its horizontal pivot axis.

6 . The charging device as claimed in claim 5 , wherein in a rest position, the contacting arm is accommodated completely in a housing, wherein the components of the contacting arm are arranged in the rest position in a plane parallel to the ground of the motor vehicle parking space.

7 . The charging device as claimed in claim 5 , wherein, in the rest position, the main link is accommodated in the housing parallel to the lifting link.

8 . The charging device as claimed in claim 6 , wherein an opening, through which the contacting arm can be pivoted from the rest position into a contacting position about the vertical pivot axis of the main link is provided in the housing.

9 . The charging device as claimed in claim 8 , wherein an electronic system is provided which is configured to provide a charging current to the contacting device.

10 . The charging device as claimed in claim 9 , wherein an the electronic system is provided which is configured to form a communication with a motor vehicle to be charged.

11 . The charging device as claimed in claim 10 , wherein a support element is arranged on at least one of: the contacting arm and the ground unit.

12 . The charging device as claimed in claim 11 , wherein the support element has at least one roller.

13 . The charging device as claimed in claim 12 , wherein the support element is arranged on at least one of: the main link, the secondary link, and the lifting link.

14 . The charging device as claimed in claim 13 , wherein the support element is arranged at the free end of at least one of: the main link and the contacting arm.

15 . The charging device as claimed in claim 3 , wherein the lifting link is attached to the contacting device at its free end.

16 . The charging device as claimed in claim 6 , wherein the components of the contacting arm comprise the main link, the secondary link, and the lifting link.

17 . The charging device as claimed in claim 8 , wherein the opening can be closed by a closure element in the rest position, and wherein the closure element is rigidly guided on the secondary link.

18 . The charging device as claimed in claim 9 , wherein the electronic system is configured to provide the charging current to the contacting device via a power cable which is laid in the contacting arm.

19 . The charging device as claimed in claim 9 , wherein the electronic system is provided which is configured to automatically control the contacting arm.

20 . The charging device as claimed in claim 12 , wherein the at least one roller is a pivotable roller.