Connecting pole for a rechargeable battery, rechargeable battery housing and machine for producing a connecting pole
View Patent ↗The invention relates to a connecting pole ( 1 ) for a rechargeable battery ( 12 ) having the following features: a) the connecting pole ( 1 ) has a connecting section ( 2 ), in which a pole terminal can be fastened on the connecting pole ( 1 ), b) the connecting pole ( 1 ) has a fastening section ( 3 ), in which the connecting pole ( 1 ) can be fastened in a housing part ( 5 ) of the rechargeable battery ( 12 ), c) the fastening section ( 3 ) has a labyrinth section ( 4 ), d) the outer wall ( 6 ) of the connecting pole ( 1 ) has, in the labyrinth section ( 4 ), one or more peripheral projections ( 7, 8, 10 ), e) at least two adjacently arranged peripheral projections ( 70, 71, 72, 73, 80, 81, 82, 83 ) are flanged in pairs in the mutually facing direction, wherein a recess ( 11 ) is formed on each of the peripheral projections ( 70, 71, 72, 73, 80, 81, 82, 83 ) with respect to the outer wall ( 6 ) of the connecting pole ( 1 ) by the flanged region. The invention also relates to a rechargeable battery housing or a part thereof with at least one such connecting pole and to a machine for producing such a connecting pole.
1. A connecting pole for a rechargeable battery, the connecting pole comprising:
a connecting section in which a pole terminal can be attached to the connecting pole,
an attachment section in which the connecting pole can be attached in a housing section of a rechargeable battery,
labyrinth section,
an inner wall wherein the entirety of the inner wall has a smooth surface, and
an outer wall comprising one or more peripheral projections in the labyrinth section, wherein at least two adjacently arranged peripheral projections are flanged in pairs in the mutually facing direction, wherein at least one flanged projection forms a hook-shaped profile, wherein flanging only produces one single undercut having a hook-shaped profile per peripheral projection, resulting in an asymmetrical profile of the peripheral projection.
2. The connecting pole according to claim 1 , characterized in that the peripheral projections provided with the undercut by flanging are otherwise free of undercuts.
3. The connecting pole according to claim 1 , characterized in that at least one non-flanged peripheral projection is respectively arranged above and/or below a pair of flanged peripheral projections.
4. The connecting pole according to claim 1 , characterized in that each of the at least two pairs of flanged peripheral projection are adjacently arranged.
5. A rechargeable battery housing or a section thereof comprising at least one connecting pole in accordance with claim 1 , wherein the at least one connecting pole with attachment section is embedded in a rechargeable battery housing section by injection molding.
6. A method for manufacturing a connecting pole according to claim 1 , comprising:
integrally forming on a blank a labyrinth section having one or more peripheral projections in the attachment section on the outer wall of the connecting pole by at least one extrusion press step or molding process.
7. A machine which performs the method of claim 6 .
8. A battery having the connecting pole of claim 1 .
9. A connecting pole for a rechargeable battery, the connecting pole comprising:
a connecting section in which a pole terminal can be attached to the connecting pole,
an attachment section in which the connecting pole can be attached to a battery housing,
a labyrinth section,
an inner wall wherein the entirety of the inner wall has a smooth surface, and
one or more peripheral projections provided on an outer wall of the connecting pole in the labyrinth section,
wherein at least two adjacently arranged peripheral projections are flanged in pairs in the mutually facing direction, wherein at least one flanged projection forms a hook-shaped profile and the peripheral projection has an asymmetrical profile.
10. A battery having the connecting pole of claim 9 .