A battery cell includes a case including a first edge forming an opening and a joining portion positioned perpendicular to the first edge, an electrode assembly accommodated within the case, and a cap assembly coupled to the case and sealing the opening. The case includes a center area facing the electrode assembly, an end area surrounding at least a portion of the cap assembly, and a groove extending from the end area and accommodating a welding bead formed in the joining portion.

A domer arrangement includes a subframe, for coupling to a frame of a can forming machine, and a domer assembly. The domer assembly includes a domer door having first and second ends. The domer door is adapted to have a domer die coupled thereto. The assembly also includes first and second spacer members, each having first and second faces spaced from each other, the first faces engaged with the subframe and the second faces engaged with the domer door at or about the first and second ends of the domer door. The domer assembly further includes a fastening arrangement rigidly coupling the domer door to the subframe such that the domer door is secured at a predetermined positioning relative to the subframe dependent on the thickness of each of the first and second spacer members.

Disclosed are a stamping method and a deep-drawing die for an aluminum alloy liner of a large-volume hydrogen storage cylinder, which solve that technical problem of low production efficiency of processing the aluminum alloy liner of the large-volume hydrogen storage cylinder by adopting strong spin and thinning of an aluminum tube in the prior art. The stamping method includes heating and stamping an aluminum ingot into a cup-shaped rough blank, then cold deep drawing the cup-shaped rough blank for thinning and lengthening into an aluminium alloy liner, and the deep-drawing die includes terrace die and thinning dies.

A preform of a can includes: a dome part being concave into the bottomed cylindrical body; and an annular leg part projecting in a direction opposite to a direction in which the dome part is concave, the dome part and the annular part being molded to form the preform of the can, and an inner surface of the dome part being pressed to mold a molded can. A maximum height of the preform of the can from a ground plane to the dome part is greater than a maximum height of the molded can from a ground plane to the dome part. In a vertical cross-sectional view, a length of an inner peripheral section of the leg part connecting between a ground point of the leg part and the dome part of the preform of the can is greater than a length of a curved end molded around the dome part of the molded can.

There is provided a heating device heating a can body with hot air, the heating device including a heating unit configured to generate the hot air, a first heating portion configured to heat the can body to raise a temperature of the can body with the hot air, and a second heating portion configured to heat the can body that has been heated to the raised temperature. At least one of the first heating portion or the second heating portion may include a plurality of heating sections having different heating conditions of the can body.

Provided is a can container including a reduced diameter portion and a can barrel portion, in which the amount of a lubricant present at the reduced diameter portion is equal to or less than 2 mg/can. Also provided is a manufacturing method for a can container. The manufacturing method includes: a forming process of forming a can body having a tubular shape from a sheet material including a metal sheet and a resin film layer covering at least one surface of the metal sheet or from a sheet material including a metal sheet; a lubricating process of applying a lubricant to the can body formed; a diameter reducing process of reducing a diameter of a part of the can body to form a reduced diameter portion; and a printed layer forming process of forming an ink print layer on an outer peripheral surface of the can body.

A control system for can manufacturing equipment includes a number of sensors structured to monitor one or more characteristics of a machine in a can manufacturing line, and a controller structured to monitor and analyze the one or more characteristics monitored by the number of sensors.