Abstract: The present invention relates to a battery cell including an electrode assembly including a plurality of electrode plates and at least one separator interposed between the plurality of electrode plates, a case configured to receive the electrode assembly, electrode tabs formed at the electrode plates so as to protrude and extend therefrom, and an electrode lead joined to the electrode tabs while being electrically connected to the outside, wherein each of the electrode tabs includes a first tab portion connected to a corresponding one of the electrode plates and a second tab portion extending from the first tab portion, the electrode lead being joined to the second tab portion, and the first tab portion is provided with a stress relief portion configured to reduce stress in the electrode tab.

Abstract: The present invention relates to a cap assembly formed of a composite of cap assembly ceramic for the cylindrical battery and mounted on a top end portion of the cylindrical secondary battery in which an electrode assembly is placed in a cylindrical can, which includes a safety vent having a predetermined notch configured to be ruptured by high pressure gas generated in the battery, a current interrupt device coupled to a lower end of the safety vent and blocking a current when an internal pressure of the battery rises, and a gasket for the current interrupt device surrounding an outer circumferential surface of the current interrupt device, wherein the gasket for the current interrupt device comprises a polymer resin having a melting point of 250° C. or more and a heat deflection temperature (HDT) of 200° C. or more, and a cylindrical secondary battery including the same.

Abstract: A battery pack includes an electrode assembly having a cathode, an anode, and a separator interposed therebetween, a first pack case having the electrode assembly and an electrolyte disposed therein, a second pack case with the first pack case disposed therein and a portion of the interior surface separated from the first pack case exterior surface, a fire extinguishing agent disposed between the exterior surface of the first pack case and the interior surface of the second pack case and a cap assembly that simultaneously seals an open surface of the first and second pack cases when the first pack case is disposed in the second pack case. A first venting portion is configured to open to enable the fire extinguishing agent to flow into the interior of the first pack case when the pressure within the first pack case is equal to or greater than a critical pressure.

Abstract: A container cap assembly includes an inner cap coupled to an inner surface and an upper end of a container neck and an outer cap maintaining the coupled state of the inner cap, thereby keeping the inside of a container sealed. The container cap assembly includes an inner cap including an outer wall portion corresponding to an inner surface of a neck of a container and a flange portion extending outward from an upper end of the outer wall portion to correspond to an upper end of the neck. An outer cap has a ceiling covering an upper portion of the inner cap and a side wall portion covering an outer circumferential surface of the neck, the ceiling and the side wall portion being integrally formed. The inner circumferential surface of the side wall portion has female threads corresponding to male threads on the outer circumferential surface of the neck.

Abstract: The present invention relates to a secondary battery including: an electrode assembly in which a plurality of electrodes and a plurality of separators are alternately stacked to each other and wound; an internal insulating tape attached to an inner surface of the electrode, wherein an attachment starting point (a) and an attachment ending point (b) are disposed in a line (A) that is directed to a winding center of the electrode assembly, and the internal insulating tape surrounds a central portion of the electrode assembly once; and an external insulating tape attached to an outer surface of the electrode corresponding to the internal insulating tape, wherein an attachment starting point (c) and an attachment ending point (d) are disposed in a line (B) that is directed to the winding center of the electrode assembly, and the external insulating tape surrounds the central portion of the electrode assembly once.

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes and negative electrodes stacked in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to the shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of the outer surfaces of the electrode assembly.

Abstract: Disclosed herein is a battery cell having an electrode assembly including one or more unit cells mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, wherein at least one of the unit cells includes a flexible electrode that can be bent or curved, an electrode current collector of the flexible electrode includes a first surface, to which an electrode active material is applied, and a second surface, to which no electrode active material is applied, the second surface being opposite to the first surface, and the second surface is provided with a mesh for improving flexibility of the electrode.

Abstract: Disclosed herein is a battery case made of a laminate sheet including an outer coating layer made of a weather-resistant polymer, an inner sealant layer made of a thermally bondable polymer, and a barrier layer interposed between the outer coating layer and the inner sealant layer, wherein an electrode assembly configured to be bent or curved in conformity with the shape of a device, in which a battery cell is mounted, is received in the battery case, and a pattern is formed on at least one surface of the battery case that faces an outer surface of the electrode assembly.

Abstract: Disclosed herein is a battery cell having an electrode assembly mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, the battery cell being configured to be flexibly deformed in response to the shape of a device, in which the battery cell is mounted, wherein an uppermost end electrode and/or a lowermost end electrode of the electrode assembly in the direction in which electrodes are stacked is provided on an electrode current collector thereof, facing the inner surface of the cell case, with an electrode mixture including inert particles, 10 to 100% of the inert particles being distributed on the surface of the electrode mixture such that a concave-convex structure is formed in the surface of the electrode mixture in vertical section.

Abstract: The present invention relates to a secondary battery including: an electrode assembly in which a plurality of electrodes and a plurality of separators are alternately stacked to each other and wound; an internal insulating tape attached to an inner surface of the electrode, wherein an attachment starting point (a) and an attachment ending point (b) are disposed in a line (A) that is directed to a winding center of the electrode assembly, and the internal insulating tape surrounds a central portion of the electrode assembly once; and an external insulating tape attached to an outer surface of the electrode corresponding to the internal insulating tape, wherein an attachment starting point (c) and an attachment ending point (d) are disposed in a line (B) that is directed to the winding center of the electrode assembly, and the external insulating tape surrounds the central portion of the electrode assembly once.

Abstract: A container cap assembly includes an inner cap coupled to an inner surface and an upper end of a container neck and an outer cap maintaining the coupled state of the inner cap, thereby keeping the inside of a container sealed. The container cap assembly includes an inner cap including an outer wall portion corresponding to an inner surface of a neck of a container and a flange portion extending outward from an upper end of the outer wall portion to correspond to an upper end of the neck. An outer cap has a ceiling covering an upper portion of the inner cap and a side wall portion covering an outer circumferential surface of the neck, the ceiling and the side wall portion being integrally formed. The inner circumferential surface of the side wall portion has female threads corresponding to male threads on the outer circumferential surface of the neck.

Abstract: Disclosed herein is a battery cell having an electrode assembly mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, the battery cell being configured to be flexibly deformed in response to the shape of a device, in which the battery cell is mounted, wherein a coating part including inert particles is formed on at least one outer surface of the electrode assembly.

Abstract: Disclosed herein is a battery cell configured such that an electrode assembly having a positive electrode/separator/negative electrode structure is received in an electrode assembly receiving part formed in a pouch-type battery case in a sealed state together with an electrolyte, wherein the battery case is provided with sealed parts, formed by thermally welding the outer edge of the battery case in the state in which the electrode assembly is received in the battery case together with the electrolyte, one or more recesses are formed in opposite side sealed parts adjacent to an upper end sealed part, at which electrode terminals are located, and/or a lower end sealed part in a state in which the recesses are formed from outsides of the side sealed parts toward a vertical middle axis of the battery cell so as to prevent wrinkles from being formed in the sealed parts of the battery case when the battery cell is bent, and portions of the side sealed parts in which the recesses are located are sealed at a higher

Abstract: A battery pack includes an electrode assembly having a cathode, an anode, and a separator interposed therebetween, a first pack case having the electrode assembly and an electrolyte disposed therein, a second pack case with the first pack case disposed therein and a portion of the interior surface separated from the first pack case exterior surface, a fire extinguishing agent disposed between the exterior surface of the first pack case and the interior surface of the second pack case and a cap assembly that simultaneously seals an open surface of the first and second pack cases when the first pack case is disposed in the second pack case. A first venting portion is configured to open to enable the fire extinguishing agent to flow into the interior of the first pack case when the pressure within the first pack case is equal to or greater than a critical pressure.

Abstract: The present invention relates to a cap assembly formed of a composite of cap assembly ceramic for the cylindrical battery and mounted on a top end portion of the cylindrical secondary battery in which an electrode assembly is placed in a cylindrical can, which includes a safety vent having a predetermined notch configured to be ruptured by high pressure gas generated in the battery, a current interrupt device coupled to a lower end of the safety vent and blocking a current when an internal pressure of the battery rises, and a gasket for the current interrupt device surrounding an outer circumferential surface of the current interrupt device, wherein the gasket for the current interrupt device comprises a polymer resin having a melting point of 250° C. or more and a heat deflection temperature (HDT) of 200° C. or more, and a cylindrical secondary battery including the same.

Abstract: Disclosed herein is a battery cell configured such that an electrode assembly having a positive electrode/separator/negative electrode structure is received in an electrode assembly receiving part formed in a pouch-type battery case in a sealed state together with an electrolyte, wherein the battery case is provided with sealed parts, formed by thermally welding the outer edge of the battery case in the state in which the electrode assembly is received in the battery case together with the electrolyte, one or more recesses are formed in opposite side sealed parts adjacent to an upper end sealed part, at which electrode terminals are located, and/or a lower end sealed part in a state in which the recesses are formed from outsides of the side sealed parts toward a vertical middle axis of the battery cell so as to prevent wrinkles from being formed in the sealed parts of the battery case when the battery cell is bent, and portions of the side sealed parts in which the recesses are located are sealed at a higher

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly, including positive electrodes and negative electrodes stacked in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a cell case in the state in which the electrode assembly is impregnated with an electrolyte, wherein the electrode assembly and the cell case are deformable in response to the shape of a device in which the battery cell is mounted, and anti-wrinkle members, for preventing wrinkles from being formed in the cell case when the cell case is deformed, are added to at least portions of the outer surfaces of the electrode assembly.

Abstract: Disclosed herein is a battery cell having an electrode assembly mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, the battery cell being configured to be flexibly deformed in response to the shape of a device, in which the battery cell is mounted, wherein a coating part including inert particles is formed on at least one outer surface of the electrode assembly.

Abstract: Disclosed herein is a battery cell having an electrode assembly mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, the battery cell being configured to be flexibly deformed in response to the shape of a device, in which the battery cell is mounted, wherein an uppermost end electrode and/or a lowermost end electrode of the electrode assembly in the direction in which electrodes are stacked is provided on an electrode current collector thereof, facing the inner surface of the cell case, with an electrode mixture including inert particles, 10 to 100% of the inert particles being distributed on the surface of the electrode mixture such that a concave-convex structure is formed in the surface of the electrode mixture in vertical section.

Abstract: Disclosed herein is a battery cell having an electrode assembly including one or more unit cells mounted in a variable cell case in a state in which the electrode assembly is impregnated with an electrolyte, wherein at least one of the unit cells includes a flexible electrode that can be bent or curved, an electrode current collector of the flexible electrode includes a first surface, to which an electrode active material is applied, and a second surface, to which no electrode active material is applied, the second surface being opposite to the first surface, and the second surface is provided with a mesh for improving flexibility of the electrode.