Battery cell with housing components which are adhesively bonded to one another in a sealed manner by a three-layer adhesive composite, and method and apparatus for manufacturing said battery cell

A method for manufacturing a housing (3) for a battery cell (1), the method comprising:

• provision of at least two housing components (11), which when assembled form the housing (3),
• arrangement of the housing components (11) so as to oppose one another along abutment faces (21), and
• adhesive bonding of the housing components (11) to one another along the mutually opposing abutment faces (21) by an adhesive composite (13),
• wherein the adhesive bonding process comprises:
• interposition of a first adhesive composite component (15) between the mutually opposing abutment faces (21) of the housing components (11), the first adhesive composite component (15) being resistant to an electrolyte (7), to be contained in the housing (3), of the battery cell (1),
• application of a second adhesive composite component (17) from the outside over the first adhesive composite component (15) and over regions, adjacent to this first adhesive composite component (15), of the housing components (11), the second adhesive composite component (17) consisting of a fluidly processable, curable material, which is fluidly applied and then cured, and
• application of a third adhesive composite component (19) from the outside over the second adhesive composite component (17) and over regions, adjacent to the second adhesive composite component (17), of the two housing components (11), the third adhesive composite component (19) being water-impermeable and/or oxygen-impermeable.

An apparatus (51) for manufacturing a housing (3) for a battery cell (1), the apparatus comprising:

• a holding device (53) for holding two housing components (11) so as to oppose one another along abutment faces (21), and
• an adhesive bonding device (52) for adhesive bonding of the housing components (11) to one another along the mutually opposing abutment faces (11) by an adhesive composite (13),
• wherein the adhesive bonding device (52) comprises:
• a first delivery unit (55) for delivery and interposition of a first adhesive composite component (15) between the mutually opposing abutment faces (21) of the two housing components (11), the first adhesive composite component (15) being resistant to an electrolyte (7), to be contained in the housing (3), of the battery cell (1),
• a second delivery unit (57) for delivery and application of a second adhesive composite component (17) from the outside over the first adhesive composite component (15) and over regions, adjacent to this first adhesive composite component (15), of the two housing components (11), the second adhesive composite component (17) consisting of a fluid curable material, and
• a third delivery unit (63) for delivery and application of a third adhesive composite component (19) from the outside over the second adhesive composite component (17) and over regions, adjacent to the second adhesive composite component (17), of the two housing components (11), the third adhesive composite component (19) being water-impermeable and/or oxygen-impermeable.