A method of reducing a thickness and increasing a height of a cylindrical wall of a metal cup to form a can body comprises positioning a wall-ironing punch (40) inside the cup, moving an annular wall-ironing die (24) axially over the closed end of the cup towards the open end of the cup, but not beyond the open end of the cup, in order to iron the cylindrical wall from the closed end up to a position axially spaced from the open end and moving the wall-ironing die (24) back in an opposite direction to remove the can body from the die (24). Methods of altering a diameter of one or more regions of a can body are also disclosed.

A sealing module for sealing a container opening of a container by a lid, the lid has a lid flange and the container has a container flange in the region of the container opening. The sealing module has a supporting unit with a supporting surface and a pressing unit with a pressing surface for pressing the lid flange together with the container flange of the container opening. The supporting unit and the pressing unit are displaceable relative to one another in an axial direction in such a way, so that the lid flange and the container flange are capable of being pressed together between the supporting surface and the pressing surface by an axially acting force in the operating state.

A sealing module for sealing a container opening of a container by a lid, the lid has a lid flange and the container has a container flange in the region of the container opening. The sealing module has a supporting unit with a supporting surface and a pressing unit with a pressing surface for pressing the lid flange together with the container flange of the container opening. The supporting unit and the pressing unit are displaceable relative to one another in an axial direction in such a way, so that the lid flange and the container flange are capable of being pressed together between the supporting surface and the pressing surface by an axially acting force in the operating state.

A method of attaching a metal end (7) to a metal container body (6) in order to close an opening in the body, wherein the body (6) has a curled lip at least partially surrounding the opening and the end (7) has an upstanding lip extending at least partially around a periphery thereof. The method comprises locating the end (7) within the body (6) at or near said opening, bringing a curling tool (8) into contact with said upstanding lip of the end (7) and applying a force to that lip, via the curling tool (8), in order to curl the upstanding lip around the curled lip of the body (6) to form interlocking curls.

A method of attaching a metal end (7) to a metal container body (6) in order to close an opening in the body, wherein the body (6) has a curled lip at least partially surrounding the opening and the end (7) has an upstanding lip extending at least partially around a periphery thereof. The method comprises locating the end (7) within the body (6) at or near said opening, bringing a curling tool (8) into contact with said upstanding lip of the end (7) and applying a force to that lip, via the curling tool (8), in order to curl the upstanding lip around the curled lip of the body (6) to form interlocking curls.

A method for securing a stopper on a container using a closure cover with the aid of a securing station, in which, during the securing, carries out measurements of quantities, in particular movement quantities, about an axis in order to assess the securing operation, and the detected measured values are assessed in order to detect insufficiently secured containers.

Disclosed is a secondary battery capable of improving sealing performance of a cell housing part including a case and a cap plate. The secondary battery includes an electrode assembly, including first and second electrode plates and a separator, a case accommodating the electrode assembly and electrically connected to the second electrode plate, a terminal mounted to the case configured to be electrically connected to the first electrode plate, a cap plate sealing an open top of the case, and a second gasket interposed between the case and the cap plate. The case includes a beading portion depressed inward and a crimping portion bent inward. A forming curvature calculated based on a bending amount of the crimping portion and a covering length of the crimping portion is different from a support strain calculated based on a depression depth of the beading portion and a cover overlapping length of the crimping portion.

The present disclosure relates to a crimping apparatus for a battery cell, and the technical object to be achieved is to provide a crimping apparatus for a battery cell capable of improving the formation quality of a battery cell. To this end, the present disclosure provides a crimping apparatus for a battery cell, which includes a lower jig disposed around a circumference of a battery can, a first upper jig which descends to come into contact with the lower jig above the battery can and presses and moves the lower jig toward the battery can, and a second upper jig which is disposed inside the first upper jig, descends along with the first upper jig, and presses an end portion of the battery can downward to bend the end portion toward a cap assembly.