Patent · US Active

Battery having sealed contact terminal bushing

US7879487B2 · kind B2 · utility

6Cited by

3References

20Claims

0Family size

Assignee

Varta Automotive Systems GmbH · DE

Inventors

Dieter Bechtold · Bad Vilbel, DE
Kai Pelz · Springe, DE
Ralf Joswig · Wolfsburg, DE

Key dates

Filing date	Apr 14, 2004
Grant date	Feb 1, 2011
Priority date	—
Expiry date	Aug 8, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49115
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A rechargeable battery includes a housing having a housing wall, at least one cell in the housing, and a contact element electrically connected to the at least one cell. The rechargeable battery also includes a plastic sealing element extrusion-coated on the contact element. The sealing element includes a supporting surface which lies flat against the housing wall at an interface. The supporting surface is transmission laser-welded to the housing wall at the interface. One of the supporting surface and the housing wall is at least partially transparent for the laser beam and the other of the supporting surface and the housing wall is absorbent for the laser beam.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.