Abstract: An electrode assembly support device includes a base portion including a mounting portion on which an electrode assembly including an electrode tab protruding from at least on one side is mounted in a first direction, a thickness direction of the electrode assembly, a body portion coupled to one side of the base portion, and a step portion coupled to the body portion and disposed to be perpendicular to the mounting portion to support the electrode tab, wherein at least a portion of the step portion is configured to protrude in the first direction compared to the mounting portion to form a first step.

Abstract: A battery cell includes: an electrode assembly; a battery case accommodating the electrode assembly and an electrolyte; and a gas discharging portion disposed between the electrode assembly and the battery case, and opening and closing a flow path based on pressure within the battery case, wherein the gas discharging portion includes: a moving member being moved in the flow path; a plurality of elastic members each elastically supporting the moving member; and a plurality of support members each disposed between the moving member and the elastic member, and in point contact with the moving member.

Abstract: A battery cell includes an electrode assembly in which a plurality of electrode plates are stacked; a protective assembly disposed on at least one side of the electrode assembly and including an insulating material; and a case having an internal space in which the electrode assembly is accommodated, wherein the protective assembly includes a through-hole configured to allow electrolyte to pass therethrough.

Abstract: A battery cell according to the present disclosure includes: an electrode assembly including a first electrode and a second electrode having a potential different from the first electrode; an accommodating body including an opening formed by opening one surface and accommodating the electrode assembly therein; an accommodating cover coupled with the opening to cover the electrode assembly; a lead portion formed at one end of each of the first electrode and the second electrode to electrically connect the electrode assembly to the outside; a lead blocking portion positioned between the electrode assembly and the accommodating body and blocking contact between the lead portion and the accommodating body; and an insulating member covering the outside of the electrode assembly.

Abstract: A pouch-type secondary battery includes an electrode assembly including a first electrode plate, and a second electrode plate and a pouch film in which the electrode assembly is accommodated and including a sealing portion on three sides of the pouch film, wherein the pouch film includes a folded portion disposed at an end of the sealing portion, and formed by folding an end portion of the pouch film.

Abstract: Methods of manufacturing secondary batteries are disclosed. In an embodiment, a method may include: placing an exterior material including an exterior material bending part, a main room, and a gas room spaced apart from the main room; inserting an electrode assembly into the main room; sealing opposite open ends of the exterior material; forming a support sealing part in a space between the gas room and the main room to divide the space into at least two spaces in a longitudinal direction; injecting an electrolyte into the at least two spaces; sealing a second end of the exterior material; forming at least one discharge hole on a side of the gas room; cutting the exterior material including the support sealing part and the gas room above the main room after internal gas is discharged; and sealing the second end of the cut exterior material above the main room.

Abstract: A battery cell includes an electrode assembly in which a plurality of electrode plates are stacked; a protective assembly disposed on at least one side of the electrode assembly and including an insulating material; and a case having an internal space in which the electrode assembly is accommodated, wherein the protective assembly includes a through-hole configured to allow electrolyte to pass therethrough.

Abstract: In an embodiment, a method for manufacturing a pouch-type secondary battery comprises folding a pouch film to accommodate an electrode assembly in the pouch film, forming a first side sealing portion, a second side sealing portion, and an upper sealing portion at both end portions and an upper portion of the pouch film, and forming a folded portion by pressing a protrusion disposed on ends of the first and second side sealing portions, wherein the folded portion is formed by folding the protrusion towards a bottom portion of the pouch film.

Abstract: A degassing device of a pouch for a secondary battery and a degassing device using the same are provided. The degassing apparatus includes a separation unit including an adsorption plate adsorbing at least one surface of the pouch, and forming a space inside of the pouch by pulling the adsorption plate, and a gas removal unit installed on the adsorption plate, piercing the pouch with a needle having a gas discharge path therein, and removing gas from the pouch through the gas discharge path.

Abstract: A battery cell is provided. The battery cell comprising a housing having an internal space in which an electrode assembly is accommodated; a cap assembly coupled to the housing and closing the internal space; and a vent member coupled to the housing and configured to open when internal pressure of the housing is equal to or higher than a reference value, wherein the vent member is coupled to an inner side of the housing.

Abstract: A battery cell includes an electrode assembly; a pouch including an accommodation portion accommodating the electrode assembly and a sealing portion sealing at least a portion of the accommodation portion; and an electrode lead connected to the electrode assembly. The sealing portion includes a first sealing portion surrounding at least a portion of the electrode lead, and a second sealing portion extending from the first sealing portion and including at least a portion folded with respect to a folding line. The pouch includes a metal layer forming an exterior of the pouch, an insulating resin layer disposed below the metal layer, and a deformed region extending from the insulating resin layer. The folding line is disposed between the electrode assembly and the deformed region.

Abstract: A pouch-type secondary battery includes an electrode assembly including a first electrode plate, a separator, and a second electrode plate; and a pouch film in which the electrode assembly is accommodated, wherein the pouch film includes a first side sealing portion from which a negative electrode lead connected to the electrode assembly protrudes, a second side sealing portion from which a positive electrode lead connected to the electrode assembly protrudes, and an upper sealing portion having both end portions connected to the first and second side sealing portions, and the pouch film includes a folded portion disposed on an end of the first side sealing portion and an end of the second side sealing portion, and folded toward a bottom portion of the pouch film, wherein the folded portion is folded in one direction.

Abstract: Proposed is an apparatus for measuring sealing strength. The apparatus includes a fixed plate, a moving plate on which a measurement object formed by bonding first and second specimens is mounted, and movably disposed on the fixed plate, and a load applier measuring a load applied to the first specimen to peel off the first specimen from the second specimen. The first specimen is peeled off from the second specimen while maintaining a predetermined peeling angle.

Abstract: A pouch unit and a battery cell including the same are disclosed. The pouch unit comprises a pouch sheet having an inner surface and an outer surface opposite the inner surface, an accommodation portion formed on the pouch sheet, the accommodation portion forming an accommodation space that is open in a direction in which the inner surface faces, a perimeter portion formed on the pouch sheet, the perimeter portion being positioned between a perimeter of the pouch sheet and the accommodation portion, and a notch portion formed alongside a side of the accommodation portion at the perimeter portion, the notch portion being concave on the inner surface.

Abstract: A secondary battery cell includes: a case in which an electrode assembly is accommodated; a cap plate assembly coupled to at least one side of the case; and a venting unit including a base coupled to one surface of the case and a notch portion formed on the base, and the notch portion includes: a first notch portion extending in a first direction; a second notch portion extending in a second direction intersecting the first direction; and a third notch portion extending in a third direction, parallel to a longitudinal direction of the base from both ends of the first notch portion and the second notch portion.

Abstract: A secondary battery cell includes: a case in which an electrode assembly is accommodated; a cap plate assembly coupled to at least one side of the case; and a venting unit including a base coupled to one surface of the case and a notch portion formed on the base, and the notch portion includes: a first notch portion extending in a first direction, parallel to a longitudinal direction of the base; a second notch portion extending in a second direction, perpendicular to the first direction, from both ends of the first notch portion, respectively; and a third notch portion extending in the first direction from both ends of the second notch portion, respectively.

Abstract: An apparatus for manufacturing a pouch-type rechargeable battery includes a preforming portion forming a folding groove in a portion of a protrusion of the pouch-type rechargeable battery, a folding portion disposed on a rear end of the preforming portion and folding the protrusion along the folding groove, a rolling portion disposed on a rear end of the folding portion and pressing the folded protrusion, and a pressing portion disposed on a rear end of the rolling portion and fixing the folded protrusion.

Abstract: In some implementations, is provided a battery cell, and battery module and battery pack including the same including: an electrode assembly in which a plurality of polar plates are stacked; a case having an internal space in which the electrode assembly is accommodated; a cap assembly coupled to the case and having a terminal disposed therein; and a connection pin configured to electrically connect the electrode assembly and the terminal, wherein the terminal includes: a rivet having an insertion hole into which the connection pin is inserted; and a terminal portion coupled to the rivet.

Abstract: A battery cell includes an electrode assembly in which a plurality of electrode plates are stacked; a protective assembly disposed on at least one side of the electrode assembly and including an insulating material; and a case having an internal space in which the electrode assembly is accommodated, wherein the protective assembly includes a through-hole configured to allow electrolyte to pass therethrough.

Abstract: Electrode assemblies and battery cells including the electrode assemblies are disclosed. In some implementations, a battery cell includes: an electrode assembly; one or more protective assemblies disposed on at least one side of the electrode assembly; and a case having an internal space in which the electrode assembly is accommodated, wherein the one or more protective assemblies includes: a protective frame including an insulating material; and a connection unit coupled to the protective frame and electrically connected to the electrode assembly.