The invention relates to an elongate steel structure (10) for a vehicle comprising:—first steel sheet element (11), and a second steel sheet element (12), said first and second steel sheet elements constituting opposite ends of the elongate steel structure and said first and second steel sheet elements overlapping each other in a mid-portion of said elongate steel structure, wherein the first and the second steel sheet elements have an overlapping hat profile including a central portion (17), two webs (18), and two flanges (19), wherein at least one of the first and second steel sheet elements include cut-outs (13) along the flanges (19) such that the overlap is interrupted along said flanges (19).

A method and apparatus for producing two-piece can bodies by drawing and ironing a laminated metal sheet, and more particularly to a processing method which prevents abrasion damage or scuffing of the laminate layer on the can body during its ironing, and a drawn and ironed two-piece can body produced thereby.

A method for producing a shaped sheet of wrapping, including a hollow portion and a perimetral edge that extends along a pre-set profile, is provided. The method includes laying a sheet of wrapping on a treatment surface having a forming cavity. The method includes forming the sheet of wrapping within the forming cavity so as to reproduce the shape of the hollow portion thereon, without subjecting the sheet of wrapping to deformation by stretching. The method includes cutting the formed sheet of wrapping along the pre-set profile for producing the perimetral edge and obtaining the shaped sheet of wrapping. In the method, the cutting step envisages the use of a laser beam according to a particular cutting mode.

A method of manufacturing a pouch type battery cell according to an embodiment of the present disclosure includes forming an embossing part in a part of a pouch film by using an embossing punch part. A pouch forming apparatus for forming a receiving part of the pouch film includes an embossing punch part, a die part serving as a passage through which the punch part moves, and a blank holder in contact with the embossing punch part in the die part.

A forming device is configured to form metal laminated sheet material into a tray-shaped case half while allowing the material to form pleats in the corners of the recess during the forming process while preventing formation of pleats along the flange. The device forms the flange so that excess material in the corners of the case halves is arranged in an undulating shape. As a result, the flange has a waved or ruffled configuration at each corner. Two such case halves are sealed together along the flange to form a reliably sealed package. A method of forming pouch cell is also described.

A method for manufacturing a press-molded article includes: preparing a patchwork blank in which a thickened portion is formed by welding patchwork to basework; bending only the thickened portion of the patchwork blank; and bending a portion other than the thickened portion in a step different from bending of the thickened portion.

A method for forming a metal composite film for battery cells includes at least the following steps: (a) inserting the metal composite film into a forming apparatus having a recess; (b) fixing the metal composite film in place by closing a film holder; (c) preforming the metal composite film within the recess in a first direction; and (d) final forming of the metal composite film within the recess in a second direction.

An electrochemical cell includes a housing, and an electrode assembly disposed in the housing. The electrode assembly comprises a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode. The housing is formed of a first case half and a second case half. Each case half is formed of a metal foil laminate material and includes a wedge-shaped central recess that is surrounded by a flange. The flange of the first case half is joined to the flange of the second case half along a seal line that surrounds the respective central recesses. The central recesses cooperate to define an interior space of the housing that contains the electrode assembly, and the interior space has the shape of a rectangular prism. The seal line extends along a diagonal of a side of the rectangular prism. A method of forming the housing is described.

Described herein is a method for producing a shaped sheet of wrapping, including a hollow portion and a perimetral edge that extends along a pre-set profile, said method comprising the steps of: laying a sheet of wrapping on a treatment surface having a forming cavity; forming said sheet of wrapping within said forming cavity so as to reproduce the shape said hollow portion thereon, without subjecting said sheet of wrapping to deformation by stretching; cutting said formed sheet of wrapping along said pre-set profile for producing said perimetral edge and obtaining said shaped sheet of wrapping.

The method is characterised in that the cutting step envisages the use of a laser beam according to a particular cutting mode.

Provided is a method of manufacturing a molded product that can reduce problems on a reinforcing plate during pressing. In one aspect of the present disclosure, the method of manufacturing a molded product includes welding a first metal plate overlaid with a second metal plate to the second metal plate; and pressing the first metal plate and the second metal plate together. In the pressing, a base surface and a wall surface are formed on the first metal plate; the wall surface is disposed to cross the base surface. In the welding, a first welding is performed on a reinforcing portion of the second metal plate that is overlaid on an area of the first metal plate that is formed into the wall surface; and subsequently, a second welding is performed in a direction crossing a direction of the first welding.