A method of forming a part includes: inserting a blank into a die, the die comprising a mold mounted above a sealing counterpart; clamping the blank between the mold and the sealing counterpart; applying first pressure on the blank from the sealing counterpart so the blank is pressed upward to form a shaped part corresponding to the mold; applying a vacuum to the shaped part to hold it against the mold also after separating the mold and the sealing counterpart, the vacuum applied through at least one opening in the mold located in a corner of the mold that the blank does not reach when the first pressure is applied; and discontinuing the vacuum to allow the shaped part to be released from the mold.

A pouch-type battery case accommodates an electrode assembly having a electrodes and separators are alternately arranged, the battery case comprises a pouch film having a film thickness, a first surface and a second surface, a first cup portion formed in the pouch film having a recessed shape offset from the first surface towards the second surface; a second cup portion formed in the pouch film having a recessed shape offset from the first surface towards the second surface; and a bridge portion formed in the pouch film between the first cup portion and the second cup portion and connecting the first cup portion to the second cup portion; the bridge portion includes a notch formed in the first surface projecting towards the second surface.

A pouch-type battery case accommodates an electrode assembly having a electrodes and separators are alternately arranged, the battery case comprises a pouch film having a film thickness, a first surface and a second surface, a first cup portion formed in the pouch film having a recessed shape offset from the first surface towards the second surface; a second cup portion formed in the pouch film having a recessed shape offset from the first surface towards the second surface; and a bridge portion formed in the pouch film between the first cup portion and the second cup portion and connecting the first cup portion to the second cup portion; the bridge portion includes a notch formed in the first surface projecting towards the second surface.

The invention is a press-molding device which is configured to obtain a press-molded article with a hat-shaped cross section by compressing a preform with a hat-shaped cross section between a punch of a first mold and a die of a second mold. The press-molding device includes: a punch and a die forming a compression mechanism to compress a flange and a side wall of a hat-shape in the preform; a compression block forming a first pressing mechanism to press an outer end portion of the flange of the hat-shape in the preform; a pad forming a second pressing mechanism to press an upper end portion of the side wall of the hat-shape in the preform.

The invention is a press-molding device which is configured to obtain a press-molded article with a hat-shaped cross section by compressing a preform with a hat-shaped cross section between a punch of a first mold and a die of a second mold. The press-molding device includes: a punch and a die forming a compression mechanism to compress a flange and a side wall of a hat-shape in the preform; a compression block forming a first pressing mechanism to press an outer end portion of the flange of the hat-shape in the preform; a pad forming a second pressing mechanism to press an upper end portion of the side wall of the hat-shape in the preform.

A method for manufacturing a battery case for electric vehicle includes: preparing a frame, and a blank material formed in a flat plate shape; disposing the frame and the blank material to stack the blank material on the frame; and pressurizing the blank material to press the blank material against the frame, so as to mold the blank material into a bathtub shape and joining the blank material to the frame by press-fitting.

A stamping tool includes a lower pad, upper pad, forming steel, and sub-pad. The lower pad includes a lower forming surface recessed in a first direction between a first lower pad surface and the second lower pad surface. The upper pad is movable along a second direction. In an extended position, the upper pad holds a workpiece against the first lower pad surface. The forming steel includes a first forming surface and is movable along the first direction. In an extended position, the forming steel is received in the recess. The sub-pad is coupled to the forming steel such that the forming steel moves the sub-pad in the first direction as the forming steel moves from the retracted position to an intermediate position in which the sub-pad holds the workpiece against the second lower pad surface while the forming steel continues to move to the extended position.

A stamping tool includes a lower pad, upper pad, forming steel, and sub-pad. The lower pad includes a lower forming surface recessed in a first direction between a first lower pad surface and the second lower pad surface. The upper pad is movable along a second direction. In an extended position, the upper pad holds a workpiece against the first lower pad surface. The forming steel includes a first forming surface and is movable along the first direction. In an extended position, the forming steel is received in the recess. The sub-pad is coupled to the forming steel such that the forming steel moves the sub-pad in the first direction as the forming steel moves from the retracted position to an intermediate position in which the sub-pad holds the workpiece against the second lower pad surface while the forming steel continues to move to the extended position.

A battery manufacturing apparatus and a battery manufacturing method are disclosed. A battery manufacturing apparatus includes a base, a mold including a mold body movably arranged on the base and a shape determination body inserted in the mold body, and an adjuster which is fixed to the base and configured to come into contact with the mold body to move the mold body.

A battery manufacturing apparatus and a battery manufacturing method are disclosed. A battery manufacturing apparatus includes a base, a mold including a mold body movably arranged on the base and a shape determination body inserted in the mold body, and an adjuster which is fixed to the base and configured to come into contact with the mold body to move the mold body.