Battery cell connector
A battery cell connector includes a first terminal part formed for connection to a battery terminal of a first battery, a second terminal part, and a connecting part arranged between the terminal parts and electrically connecting the terminal parts to one another. The connecting part has a Z-shaped longitudinal cross-section. The Z-shaped longitudinal cross-section includes a central web which is inclined by no more than 20° such that the connecting part is elastically deformable in at least two perpendicular spatial directions. The first terminal part is formed from a first electrically conductive material and a flat piece formed from a second and different type electrically conductive material may be bonded to the second terminal part. It is often desirable for the conductive material to correspond to the battery terminal to which it is to be joined.
1. Battery cell connector, comprising:
a first terminal part adapted for connecting to a battery terminal of a first battery,
a second terminal part,
a connecting part which is arranged between the two terminal parts and which electrically connects the terminal parts to one another, wherein the first terminal part is formed at least on the side (A) facing a battery terminal from a first electrically conductive material, and
wherein a flat piece, which is formed for connecting to a second battery terminal and which is formed at least on the side (A) facing the second battery terminal from a second electrically conductive material different from the first electrically conductive material, is arranged materially bonded on the second terminal part,
wherein the connecting part comprises a Z-shaped longitudinal cross-section, wherein the Z-shaped longitudinal cross-section includes a central web which is inclined by no more than 20° with respect to perpendicular to the flat piece, wherein the Z-shaped longitudinal cross-section is corrugated such that the connecting part is elastically deformable in at least two perpendicular spatial directions,
wherein the connecting part comprises at least one corrugation ridge and one corrugation trough in longitudinal cross-section, and
wherein the corrugation ridge and the corrugation trough respectively lie outside the plane of at least one of the terminal parts.
2. Battery cell connector according to claim 1 , wherein the surfaces of the flat piece and of the first terminal part facing towards the battery are coplanar.
3. Battery cell connector according to claim 1 , wherein the first and/or second terminal part is formed as a flat part.
4. Battery cell connector according to claim 1 , wherein the connecting part is formed integrally with the first and/or second terminal part.
5. Battery cell connector according to claim 1 , wherein the flat piece is welded to the second terminal part.
6. Battery cell connector according to claim 1 , wherein the connecting part is formed from at least two foils, and/or wherein the connecting part is formed from one of
A) stranded aluminium,
B) stranded copper,
C) braided aluminium,
D) braided copper.
7. Battery cell connector according to claim 1 , wherein the first terminal part comprises a connecting region formed from a third electrically conductive material on the side (B) facing away from the battery.
8. Battery cell connector according to claim 7 , wherein the connecting region is flush with the surface of the first terminal part facing away from the battery.
9. Battery cell connector according to claim 7 , wherein the connecting region is coated with the third metal.
10. Battery cell connector according to claim 7 , wherein the connecting region is roller-plated with the third metal.
11. Battery cell connector according to claim 1 , further comprising an opening for the battery arranged in at least one terminal part.
12. Battery cell connector according to claim 11 , wherein the opening comprises an extension cutting through its diameter.
13. Battery cell connector according to claim 11 , wherein a diameter of the opening is smaller than a battery terminal.
14. Battery cell connector according to claim 11 , wherein a battery is connected at least partially along the outer circumference of the opening materially bonded to the first terminal part.
15. Battery cell connector according to claim 1 , wherein the flat piece comprises an opening coaxial with a ventilation opening in the second terminal part.
16. Battery cell connector according to claim 15 , wherein a battery is connected at least partially along the outer circumference of the opening materially bonded to the flat piece.
17. Battery cell connector according to claim 15 , wherein the welding opening of the second terminal part is larger than the positioning opening of the first terminal part, and in that the size of the positioning opening of the flat piece corresponds to the size of the positioning opening of the first terminal part.
18. Battery cell connector according to claim 1 , wherein at least one terminal part is formed from a soft-annealed aluminium, and/or that the connecting part is partially or completely soft-annealed.
19. System, consisting of
at least two batteries arranged oppositely poled next to one another, the oppositely poled battery terminals of two batteries respectively being arranged subject to tolerance in a terminal region, the battery terminals of a first polarity being formed from a first electrically conductive material and battery terminals of a second polarity being formed from a second electrically conductive material, and
at least one battery cell connector according to claim 1 , which is connected by a first terminal part with a material fit to a first battery terminal of a first polarity of the first battery and is connected by the flat piece with a material fit to a second battery terminal, of a second polarity of a second battery, which is assigned to the first battery terminal.
20. A battery cell connector according to claim 1 , wherein the central web of the Z-shaped longitudinal cross-section is arranged substantially perpendicular to the flat plece.
21. A battery cell connector according to claim 1 , wherein the central web of the Z-shaped longitudinal cross-section is oriented with an incline of at most 10° with respect to the perpendicular to the flat piece.