Battery cell comprising a covering plate fixed in a form-fitting manner in a housing
US10135039B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2013 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jul 18, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a battery cell (1), in particular a lithium ion battery cell, in which a wrapping element, two current collectors and an electrolyte are accommodated in a housing (11). The prismatically formed housing (11) comprises a container that is open towards the upper side and a cover arrangement having a cover plate (23) closing the opening (14) of said container. The cover plate (23) and a wall of the container (13) are designed in the region of the opening (14) in such a manner that the wall prevents a movement of the cover plate (23) from the opening by means of a positive connection. An elastically compressible sealing element (31) is provided between the wall and a wall surface of an outer edge (27) of the cover plate directed towards said wall, in order to seal the cover plate (23) hermetically against the container (13). On the basis of the positive connection between the cover plate (23) and the edge of the container (13) a sealing effect can hereby likewise increase while the inner pressure in the housing (11) increases. The invention relates to a battery cell (1), in which it can be prevented that the cover plate (23) must be welded to the container (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.