Abstract: Disclosed are a pouch exterior capable of easily mounting an electrode assembly at an accurate position between accommodating parts, having an integrated form to minimize sealing parts contacting the air and to increase a lifetime of a battery, capable of preventing a rupture of the pouch exterior in an assembly process, and capable of increasing an energy density of a cell, a pouch-type secondary battery using the pouch exterior, and a method of manufacturing the pouch-type secondary battery. A pouch exterior for a secondary battery, according to the present disclosure, includes two corresponding accommodating parts configured to mount an electrode assembly therebetween and symmetrically formed at both sides by disposing a protruding part therebetween, and is folded along two folding lines outside a center pan of the protruding part by vertically mounting a side surface of the electrode assembly on the protruding part, such that folded parts surround side edges of the electrode assembly.

Abstract: An apparatus for preparing a unit cell is provided. The apparatus includes a center electrode reel from which a center electrode sheet is unwound, wherein the center electrode sheet is configured to form a plurality of center electrodes, separator reels from which separator sheets to be stacked with the center electrodes are unwound, a laminator configured to laminate a stack which is formed by stacking the plurality of center electrodes with the separator sheets while the plurality of center electrodes are spaced apart from each other and disposed in a row in a longitudinal direction of the separator sheets, a first nozzle configured to apply an adhesive to an upper surface of the separator sheet disposed on an uppermost layer of the laminated stack, and an upper electrode reel from which an upper electrode sheet is unwound.

Abstract: An alignment inspection apparatus for the electrode assembly including a laminate, in which a first separator, an internal electrode, a second separator, and an upper electrode are sequentially laminated, includes a camera disposed above a central portion of the electrode assembly to photograph and inspect the electrode assembly and side lights obliquely irradiating light onto each of both ends of the upper electrode. The side lights are symmetrical to each other with respect to the central portion of the electrode assembly.

Abstract: To solve the above problem, a pouch forming apparatus according to an embodiment of the present invention includes: a die in which a forming space is recessed inward from a top surface thereof; a partition wall partitioning the forming space into first and second forming spaces; a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and an electromagnetic force generation part disposed above the forming space and configured to generate electromagnetic force and configured to apply the electromagnetic force to the forming space.

Abstract: In order to the aforementioned issue, a unit cell manufacturing apparatus according to an embodiment of the present invention includes: an electrode reel from which an electrode sheet, which is to be a plurality of electrodes, is unwound; a separator reel from which a separator sheet to be stacked with the electrodes is unwound; and in a stack which is formed by stacking the plurality of electrodes with the separator sheet while the plurality of electrodes are spaced apart from each other and disposed in a row in the longitudinal direction of the separator sheet, a sealer which is disposed between the plurality of electrodes and applies heat and pressure to at least one of the corners of the electrodes or the edges of the electrodes.

Abstract: An apparatus for preparing a cell is provided. The apparatus includes an electrode reel from which an electrode sheet is unwound, wherein the electrode sheet is configured to form a plurality of electrodes, a separator reel from which a separator sheet is unwound, wherein the separator sheet is configured to stack with the electrode while covering the electrode by being folded when the electrode is stably placed, a table having an upper surface on which the electrode and the separator sheet are stably placed, and a nozzle configured to apply an adhesive to at least a portion of a region of the separator sheet stably placed on the table.

Abstract: An apparatus for preparing a unit cell is provided. The apparatus includes a lower separator reel from which a lower separator sheet is unwound, a first nozzle configured to apply an adhesive to at least a portion of one surface facing upward of the unwound lower separator sheet, an upper separator reel from which an upper separator sheet is unwound, a second nozzle configured to apply an adhesive to at least a portion of one surface facing upward of the unwound upper separator sheet, and a first nip roll configured to turn opposite surfaces of the upper separator sheet upside down so that the one surface of the upper separator sheet to which the adhesive has been applied is directed downward and adheres to an upper surface of a first electrode stably placed on the one surface of the lower separator sheet.

Abstract: To solve the above problem, a pouch forming apparatus according to an embodiment of the present invention includes: a die in which a forming space is recessed inward from a top surface thereof; a partition wall partitioning the forming space into first and second forming spaces; a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and an electromagnetic force generation part disposed above the forming space and configured to generate electromagnetic force and configured to apply the electromagnetic force to the forming space.

Abstract: A system and method for transferring an electrode substrate, including a process of pressing an electrode substrate, supplied from a winding roll, in a direction opposite to a winding direction, by using a bending mitigation roller. According to the present system and method, it is possible to resolve a bending phenomenon of an electrode substrate supplied from a winding roll and significantly reduce product defects while not lowering the process efficiency.

Abstract: A unit cell alignment apparatus that includes a base member, on the upper surface of which unit cells constituting an electrode assembly are stacked parallel thereto, a first guide member located at one side of the base member, the first guide member being disposed so as to be perpendicular to the upper surface of the base member, a second guide member located at the base member, the second guide member being disposed so as to be perpendicular to the upper surface of the base member while being at right angles to the first guide member, and an inclination adjustment member configured to adjust the inclination of the base member.

Abstract: The present invention relates to a method for manufacturing an electrode assembly.

Abstract: A method for manufacturing an electrode assembly comprises: a primary stack manufacturing step in which a first electrode and a second electrode are alternately stacked with a separator on a top surface of a table; a secondary stack manufacturing step in which the first electrode and the second electrode are alternately stacked with the separator on the primary stack so that the second electrode is stacked to be disposed at the lowermost end; a stack rotating step in which the primary stack and the secondary stack are rotated together at an angle of 180° to change positions of the primary stack and the secondary stack; and an electrode assembly manufacturing step in which the first electrode and the second electrode are alternately stacked with the separator on the primary stack so that the second electrode is stacked to be disposed at the lowermost end to manufacture a tertiary stack.

Abstract: An alignment inspection apparatus for the electrode assembly including a laminate, in which a first separator, an internal electrode, a second separator, and an upper electrode are sequentially laminated, includes a camera disposed above a central portion of the electrode assembly to photograph and inspect the electrode assembly and side lights obliquely irradiating light onto each of both ends of the upper electrode. The side lights are symmetrical to each other with respect to the central portion of the electrode assembly.

Abstract: The present invention provides a method for manufacturing an electrode assembly, comprising: interposing a plurality of first electrodes one by one, which are spaced apart from each other, between two separators; stacking a second electrode on each of outer surfaces of the separators on each of both sides of the first electrode at positions that are skipped by one of the plurality of positions on which the first electrodes are disposed to alternately continuously form a bi-cell, in which the second electrode/the separator/the first electrode/the separator/the second electrode are sequentially stacked, and a half-cell, in which the separator/the first electrode/the separator are sequentially stacked; cutting the stack into a unit cell in which one bi-cell and one half-cell are connected to each other; folding the unit cell so that the bi-cell and the half-cell are stacked; and stacking a plurality of folded unit cells to manufacture the electrode assembly.

Abstract: An alignment inspection apparatus for the electrode assembly including a laminate, in which a first separator, an internal electrode, a second separator, and an upper electrode are sequentially laminated, includes a camera disposed above a central portion of the electrode assembly to photograph and inspect the electrode assembly and side lights obliquely irradiating light onto each of both ends of the upper electrode. The side lights are symmetrical to each other with respect to the central portion of the electrode assembly.

Abstract: A pouch exterior material that enables an electrode assembly to be easily mounted on an accommodating portion at a proper position, having an integrated shape and including an inserting portion provided at a center of the pouch exterior material and having a width equal to a thickness of the electrode assembly, accommodating portions provided symmetrically at two sides of the inserting portion and gradually deepening from a portion corresponding to a width center of the electrode assembly towards a portion corresponding to an edge of the electrode assembly, and a triangular stepped portion provided at two ends of the inserting portion and having a depth gradually decreasing towards an end.

Abstract: Provided is a battery module in which a connection structure between electrode leads is changed to prevent a heat generation phenomenon when overcharged and to allow easy connection and disconnection between secondary batteries, and a method for manufacturing the same. The battery module according to the present disclosure includes a secondary battery stack formed by stacking a plurality of secondary batteries having electrode leads, wherein each electrode lead protrudes from the corresponding secondary battery, and each electrode lead has a bent part, and the bent parts of opposite-polarity electrode leads of neighboring secondary batteries are stacked with an elastic body interposed therebetween, and the corresponding stacked part is fastened by an insulating bolt including a washer, with the elastic body being compressed.

Abstract: A pouch exterior material that enables an electrode assembly to be easily mounted on an accommodating portion at a proper position, having an integrated shape and including an inserting portion provided at a center of the pouch exterior material and having a width equal to a thickness of the electrode assembly, accommodating portions provided symmetrically at two sides of the inserting portion and gradually deepening from a portion corresponding to a width center of the electrode assembly towards a portion corresponding to an edge of the electrode assembly, and a triangular stepped portion provided at two ends of the inserting portion and having a depth gradually decreasing towards an end.

Abstract: A pouch case sealing apparatus for sealing a pouch case that includes a pouch body for accommodating an electrode assembly of a battery cell and a pouch terrace extending from the pouch body is provided. The pouch case sealing apparatus includes: a pair of sealing jigs, each sealing jig having a pressing surface, the pair of sealing jigs being configured to press and thermally fuse the pouch terrace from upper and lower directions of the pouch terrace so that the pouch case is sealed; and a pair of terrace anti-protruding units formed at respective pressing surfaces of the pair of sealing jigs to prevent an end portion of the pouch terrace from protruding beyond the pouch body in a horizontal direction of the pouch body when the pouch terrace is pressed and thermally fused. A method for sealing a pouch case is also provided.

Abstract: Discussed is a notching apparatus for a secondary battery that includes: a lower mechanism comprising a die and a die holder to which the die is fixed, the die engaging an electrode provided with a coating portion and a non-coating portion; a stripper including a first stripper pressing the coating portion and a pair of second strippers pressing and fixing the non-coating portion; an upper mechanism including a punch provided between the pair of second strippers and provided with a cutting blade cutting the non-coating portion disposed between the pair of second strippers and a punch holder allowing the punch to move in a direction of the lower mechanism; and a pressing member pressing the non-coating portion disposed between the pair of second strippers to increase in tension force when the non-coating portion is cut by the punch.