Contact element, in particular a solder tab and photovoltaic junction box with contact element, in particular a solder tab

1. A method to mount a contact element for providing an electrical contact between a first electrical device and a second electrical device, wherein the contact element comprises

a first contact portion to be electrically connected to the first electrical device;

a second contact portion to be electrically connected to the second electrical device, wherein the first contact portion is arranged at a distance to the second contact portion; and

an adjustment portion connecting said first and second contact portion, wherein with said adjustment portion said distance between the first contact portion and the second contact portion is adjustable,

wherein the adjustment portion comprises at least one cut-out which is arranged such that the remaining elements of the adjustment portion provide web elements and

wherein said cut-out comprises an edge which is arranged such that via said edge an adjustment force is exertable onto the second contact portion such that said distance is adjustable with regard to the first contact portion which is stationary;

wherein said contact element is electrically connected with said first contact portion to a first electrical device,

wherein afterwards an adjustment force is applied onto said edge of the contact element, such that the adjustment portion is deformed and said second contact portion will be moved relative to said first contact portion in order to adjust the distance between the first contact portion and the second contact portion, and

wherein afterwards said contact element is electrically connected with said second contact portion to the second electrical device.

2. The method according to claim 1 , wherein the adjustment portion is provided such that it is deformed with a rolling motion and/or a bending motion upon adjusting said distance.

3. The method according to claim 1 , wherein the adjustment portion comprises a plurality of web elements which connect said first contact portion with said second contact portion.

4. The method according to claim 1 , wherein the first contact portion extends in a first plane and the second contact portion extends in a second plane which extends parallel to the first plane, wherein said distance is defined as being perpendicular to said planes.

5. The method according to claim 4 , wherein a tool is moved perpendicular to the first plane such that the second contact portion will be moved perpendicular to the first contact portion.

6. The method according to claim 4 , wherein the tool comprises a slot in which a contact surface is arranged, whereby said contact surface contacts the contact element during the adjustment step.

7. The method according to claim 4 , wherein the adjustment portion comprises

a first section which adjoins the first contact portion and extends substantially perpendicular to said first contact portion,

a second section adjoining said first section and

a third section which adjoins said second section and said second contact portion, wherein the third section is substantially perpendicular to said second contact portion.

8. The method according to claim 7 , wherein said first section and said third section extend parallel to each other and wherein the second section comprises a curved structure around an axis that is substantially parallel to the said first plane and said second plane.

9. The method according to claim 8 , wherein the curved structure has a cross-sectional structure of a semicircle.

10. The method according to claim 7 , wherein said cut-out extends substantially fully over said second section and partly into said first section and/or partly into said third section, or wherein said cut-out extends only partly over said second section.

11. The method according to claim 1 , wherein the electrical connection to said first and said second electrical device is established by means of a soldered or welded connection.

12. The method according to claim 1 , wherein said contact element is a solder element.

13. The method according to claim 1 , wherein a tool engages with said edge in order to exert said adjustment force.