Abstract: A battery cell having a first housing element (4) which holds the electrochemical components of the battery cell (2) and has an opening (6), and a second housing element (5) which has a voltage tap (7) to be accessed from a first surface (8) of the second housing element (5), the second housing element (5) closes off the opening (6) so that a first part region (91) of a second surface (9) of the second housing element (5) is immediately adjacent the interior space (10) of the first housing element (4), and that a second part region (92) of the second surface (9) of the second housing element (5) protrudes beyond the first housing element (4), wherein the second housing element (5) comprises a sealing element (11) connected to the first surface (8) and/or to the second part region (92) of the second surface (9).

Abstract: A battery having a plurality of battery cells accommodated in a housing, wherein a plurality of first battery cells are electrically connected to one another in series and/or in parallel, and a plurality of second battery cells are electrically connected to one another in series and/or in parallel, wherein the first battery cells each have a first outer surface and the second battery cells each have a second outer surface, wherein the housing of the battery has a first housing wall and a second housing wall, which is arranged opposite the first housing wall, wherein a first flow channel is formed between the first wall of the housing and the first outer surface of one of the first battery cells, and wherein a second flow channel is formed between the second wall of the housing and the second outer surface of one of the second battery cells.

Abstract: A battery cell having a first housing element (4) which holds the electrochemical components of the battery cell (2) and has an opening (6), and a second housing element (5) which has a voltage tap (7) to be accessed from a first surface (8) of the second housing element (5), the second housing element (5) closes off the opening (6) so that a first part region (91) of a second surface (9) of the second housing element (5) is immediately adjacent the interior space (10) of the first housing element (4), and that a second part region (92) of the second surface (9) of the second housing element (5) protrudes beyond the first housing element (4), wherein the second housing element (5) comprises a sealing element (11) connected to the first surface (8) and/or to the second part region (92) of the second surface (9).

Abstract: A battery having a plurality of battery cells accommodated in a housing, wherein a plurality of first battery cells are electrically connected to one another in series and/or in parallel, and a plurality of second battery cells are electrically connected to one another in series and/or in parallel, wherein the first battery cells each have a first outer surface and the second battery cells each have a second outer surface, wherein the housing of the battery has a first housing wall and a second housing wall, which is arranged opposite the first housing wall, wherein a first flow channel is formed between the first wall of the housing and the first outer surface of one of the first battery cells, and wherein a second flow channel is formed between the second wall of the housing and the second outer surface of one of the second battery cells.

Abstract: The invention relates to a battery system, comprising at least one battery component (10), which has at least one measurement point (12a-g), and comprising an optical waveguide (14), which is connected to the measurement point (12a-g) in a thermally conductive manner, wherein a light source (16a-d) is provided for radiating light of a defined frequency into the optical waveguide (14) and an optical detector (18) is provided for detecting light exiting the optical waveguide (14), characterized in that a thermochromatic material (30) is provided, which is connected to the measurement point (12a-g) in a thermally conductive manner and is positioned in a beam path of the optical waveguide (14). In summary, a reliable and robust possibility for the temperature monitoring of one or more battery components (10) is thus enabled in a simple and economical manner.