Provided is a sealing apparatus of a pouch-type secondary battery, capable of preventing electrolyte leakage by constantly positioning a lead on a sealing groove so as to completely seal the secondary battery. A sealing apparatus according to the present disclosure is a sealing apparatus of a pouch-type secondary battery which seals a pouch case in which an electrode assembly is installed. The sealing apparatus includes upper and lower sealing blocks, wherein at least one sealing block of the upper and lower sealing blocks has a sealing groove having a slanted step portion which is formed at a position corresponding to the lead of the pouch-type secondary battery and a lead guide for seating the lead on the sealing groove is installed in front of the sealing block.

A cell in which thermal welding of a laminate packaging is performed so that the thickness of a thermal welded portion including an electrode terminal is larger than that of a thermal welded portion including no electrode terminal.

A molding apparatus according to an embodiment of the present invention may mold a cup part in a pouch film. The molding apparatus includes: a die on which the pouch film is seated on a top surface thereof and in which a first space recessed from the top surface is defined; a stripper which is disposed above the die to fix the pouch film and in which a second space is defined at a position corresponding to the first space; and a pressing part configured to apply a pneumatic or hydraulic pressure to the pouch film so that a portion of the pouch film is elongated into the first space.

A pouch-type secondary battery according to an embodiment of the present invention for solving the above problems includes a cup part configured to accommodate an electrode assembly formed by stacking electrodes and separators, wherein the cup part includes: a bottom portion configured to form a bottom; an outer wall configured to form a side surface and meet the bottom portion; a punch edge configured to connect the bottom portion to the outer wall; a thickness edge configured to connect two adjacent outer walls to each other; and a corner formed by connecting the two adjacent punch edges to the thickness edge, wherein at least one of the punch edges is rounded, at least one of the thickness edge is rounded, at least one of the corner is rounded and has a curvature radius different from that of each of the punch edge and the thickness edge.

An installation for producing a polymer melt for a porous film, in particular for a membrane film, comprises a planetary roller extruder. Said extruder is used to produce a flowable polymer melt from thermoplastics. The planetary roller extruder has a filling opening and a discharge side for delivering the polymer melt. A melt pump is further provided. The discharge side of the planetary roller extruder is connected to a downstream inlet side of the melt pump for further conveying the polymer melt. The connection is in the form of a pressure channel shielded from the ambient atmosphere or a pressure line shielded from the ambient atmosphere. The planetary roller extruder and the melt pump are designed and/or can be driven in such a manner that the polymer melt is applied or can be transferred under pressure at the melt pump on the inlet side.

The present invention relates to a pouch-shaped case forming apparatus for forming a pouch-shaped case having a terrace step, wherein there are no dents or wrinkles at a pouch folding portion of the pouch-shaped case, a method of manufacturing a pouch-shaped case using the same, and a pouch-shaped case manufacturing using the forming apparatus.

A battery includes a battery cell and a packaging body, an edge of at least one side of the packaging body is provided with a sealing region to seal and wrap the battery cell body in the packaging body, and the packaging body includes a heat sealing layer; and in the sealing region, a side, away from the battery cell body, of the heat sealing layer is an outer sealing side, a side, close to the battery cell body, of the heat sealing layer is an inner sealing side, and a crystallinity of the outer sealing side is greater than a crystallinity of the inner sealing side. The battery includes the packaging body with a high packaging strength and a strong resistance to bending, which may more effectively block water vapor from entering a battery, and also improves safety performance and a service life of a battery.

A cell is provided. The cell includes a cell element including a positive electrode, a negative electrode, an electrolyte and a laminate film including an exterior layer, a metal layer, an interior layer, and a welded layer formed of the interior layer; wherein a thickness of the welded layer is larger than 5 m in a flat portion of the interior layer, wherein the welded layer increases in thickness from the flat portion to an end portion of the welded layer, and wherein when a thickness of the laminate film is t, a thickness of the interior layer is p and a thickness of the laminate film in the welded layer is t1, a following equation is satisfied: t2p2+5<t1<t25 (m).

A pouch-type secondary battery according to an embodiment of the present invention for solving the above problems includes a cup part configured to accommodate an electrode assembly formed by stacking electrodes and separators, wherein the cup part includes: a bottom portion configured to form a bottom; an outer wall configured to form a side surface and meet the bottom portion; a punch edge configured to connect the bottom portion to the outer wall; a thickness edge configured to connect two adjacent outer walls to each other; and a corner formed by connecting the two adjacent punch edges to the thickness edge, wherein at least one of the punch edges is rounded, at least one of the thickness edge is rounded, at least one of the corner is rounded and has a curvature radius different from that of each of the punch edge and the thickness edge.

An electric component housing for accommodating electric components including a housing body forming an appearance of the electric component housing, and a metal support structure embedded inside the housing body.