| 摘要 |
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 FIG. 3 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). |
| 主权项 |
1. A battery cell (1), comprising:
a coil element (3) comprising a wound stack (5) comprising a first film, coated with anode material, a second film, coated with cathode material, and two plastic films acting as diaphragms, an electrolyte, two current collectors (7, 9), of which one is electrically conductively connected to the first film and one is electrically conductively connected to the second film, a prismatic housing (11) having a container (13) and a cover arrangement (23); wherein the container (13) has an opening (14), through which the coil element (3) and the two current collectors (7, 9) can be introduced into the housing (11) during the manufacture of the battery cell (1), wherein the cover arrangement (15) has a covering plate (23) arranged in the opening (14) of the container (13) and closes off the opening (14) of the container (13) in a gas-tight and pressure-tight manner, characterized in that the covering plate (23) and a wall of the container (13) in a region of the opening (14) are formed in such a way that the wall, by means of a form-fitting connection, prevents a movement of the covering plate (23) out of the opening (14), and an elastically compressible sealing element (31) is arranged between a peripheral surface of the covering plate (23), which peripheral surface is directed towards the wall (13), and the wall. |
