Connecting element for connecting cells to form accumulators

1. A connecting element for connecting cells to form accumulators, comprising a plate-shaped element made up of conducting material, which element has at least two tabs, opposite one another, which tabs each have a connecting area by means of which the respective tab is connectible in its end region to the corresponding pole of the cell, wherein the respective connecting area of each tab of the plate-shaped element comprises a bulge having a length corresponding to at least 1.5 times the width of the bulge via which the tabs of the connecting element are connectible by means of resistance welding to the respective pole of the corresponding cell.

2. The connecting element according to claim 1 , wherein the bulge of each tab is provided in the middle, and has a width corresponding to about one third of the tab width.

3. The connecting element according to claim 1 , wherein the length of each bulge of a tab is twice as large as the width of the tab.

4. The connecting element according to claim 1 , wherein this connecting element is able to be manufactured from an electrolytically nickel-plated cold rolled strip, preferably by punching out.

5. The connecting element according to claim 1 , wherein the bulge is achievable by stamping.

6. The connecting element according to claim 2 wherein the length of each bulge of a tab is twice as large as the width of the tab.

7. The connecting element according to claim 2 , wherein this connecting element is able to be manufactured from an electrolytically nickel-plated cold rolled strip, preferably by punching out.

8. The connecting element according to claim 3 , wherein this connecting element is able to be manufactured from an electrolytically nickel-plated cold rolled strip, preferably by punching out.

9. The connecting element according to claim 6 , wherein this connecting element is able to be manufactured from an electrolytically nickel-plated cold rolled strip, preferably by punching out.

10. The connecting element according to claim 2 , wherein the bulge is achievable by stamping.

11. The connecting element according to claim 3 , wherein the bulge is achievable by stamping.

12. The connecting element according to claim 4 , wherein the bulge is achievable by stamping.

13. The connecting element according to claim 6 , wherein the bulge is achievable by stamping.

14. The connecting element according to claim 7 , wherein the bulge is achievable by stamping.

15. The connecting element according to claim 8 , wherein the bulge is achievable by stamping.

16. The connecting element according to claim 9 , wherein the bulge is achievable by stamping.

17. The connecting element according to any one of claims 1 to 5 and 6 to 16 , wherein this connecting element is provided with two tabs in each case disposed parallel to one another and running parallel to one another.

18. The connecting element according to any one of claims 1 to 5 and 6 to 16 , wherein this connecting element has a central part on each of whose ends two pairs of tabs are provided, one pair of tabs in each case being disposed parallel and opposite the other pair.

19. The connecting element according to claim 13 , wherein each of the two pairs of tabs is inclined with respect to the central part by an angle.

20. The connecting element according to claim 19 , wherein the angle, by which each of the two pairs of tabs are inclined with respect to the central part is about 35° to 50°, preferably about 42°.