Abstract: A battery includes an electrode assembly including a first electrode, second electrode, and a separator between the first electrode and the second electrode, the first electrode including a first region coated with an active material and a second region at a first side and adjacent to the first region, the second region being exposed beyond the separator, and at least part of the second region is an electrode tab; a housing including a first end with a first opening, the housing accommodating the electrode assembly; a first current collector including an edge portion on the electrode assembly, a second region coupling portion extending from the edge portion and coupled with the second region, and a terminal coupling portion spaced apart from the second region coupling portion; and a terminal coupled with the terminal coupling portion.

Abstract: A separator, including a porous polymer substrate; and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer includes a binder polymer and inorganic particles. The separator has two ends and includes an insulation coating layer at each of the two ends in a transverse direction on outermost sides of the separator. The insulation coating layer includes a filler and a binder. The insulation coating layer has a porous structure.

Abstract: A current collector for a secondary battery has a material having an elongation of 1.5 to 3.0% and a tensile strength of 25 to 35 kgf/mm2. An electrode, an electrode assembly, cylindrical battery cell, and battery pack are also provided.

Abstract: A battery can include an electrode assembly, a battery housing, a terminal and a cap. The electrode assembly can have a first electrode, a second electrode and a separator between the first electrode and the second electrode. Each of the first electrode and the second electrode can have a first portion including an active material corresponding to the separator, and a second portion exposed beyond the separator and not coated with the active material. The battery housing can have a first end with a first opening and a second end with a second opening opposite the first end. The terminal can be electrically connected to the second portion of the first electrode and exposed out of the battery housing through the first opening of the battery housing at the first end.

Abstract: A jig for evaluating stability of a battery cell includes a jig part including first and second terminal pins configured to come into contact with external terminals of the battery cell, and a plate positioned to face the jig part and configured to support the battery cell, in which the jig part includes the first and second terminal pins configured to come into contact with the battery cell, and a main body configured to be separated from or coupled to at least any one of the first and second terminal pins.

Abstract: A battery can include an electrode assembly including a first electrode, a second electrode, and a separator between the first electrode and the second electrode. The first electrode can have a pair of first sides and a pair of second sides extending between the pair of first sides, a first portion including an active material extending between the pair of first sides, and a second portion extending between the pair of first sides and exposed beyond the separator along a winding direction. The battery can further include a battery housing having a first opening at a first end and a second end with a second opening opposite the first end, a first current collector including a support portion positioned on the electrode assembly, and a housing cover which seals the first opening.

Abstract: A battery, includes an electrode assembly having a first electrode, a second electrode and a separator, wherein each of the first electrode and the second electrode has a first portion including an active material corresponding to the separator, and a second portion exposed beyond the separator and not coated with the active material; a battery housing having a first end with a first opening and a second end with a second opening opposite the first end, the battery housing accommodating the electrode assembly through the second opening at the second end and electrically connected to the second portion of the second electrode; a terminal electrically connected to the second portion of the first electrode and exposed out of the battery housing through the first opening of the battery housing at the first end; and a cap covering and sealing the second opening at the second end of the battery housing.

Abstract: A battery can include an electrode assembly having a first electrode, a second electrode and a separator. The first electrode can include a first active material region coated with an active material layer along a winding direction and a first uncoated region not coated with the active material layer, and at least part of the first uncoated region used as an electrode tab. The battery can further include a first current collector coupled to at least part of the first uncoated region on the electrode assembly, a battery housing to accommodate the electrode assembly and the first current collector, and an insulator between an inner surface of the battery housing facing the first uncoated region or the first current collector and the first uncoated region or the first current collector to block the electrical connection between the first uncoated region and the battery housing.

Abstract: An electrode assembly includes a first electrode; a second electrode; and a separator, the first electrode, the second electrode, and the separator wound about an axis defining a core and an outer circumference of the electrode assembly. The first electrode has a pair of first sides and a pair of second sides, a first portion extending between the pair of first sides, and a second portion extending between the pair of first sides, the first portion being coated with an active material, and at least a part of the second portion includes an electrode tab. The second portion includes a first part adjacent to the core of the electrode assembly, a second part adjacent to the outer circumference of the electrode assembly, and a third part between the first part and the second part. The first or second part has a smaller height than the third part.

Abstract: An electrode assembly, a battery, and a battery pack and a vehicle including the same are provided. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on an axis to define a core and an outer circumference. The first electrode includes a first portion coated with an active material and a second portion at a first side and adjacent the first portion, the second portion being exposed beyond the separator along a first axial direction of the electrode assembly. A part of the second portion is bent in a radial direction of the electrode assembly forming a first surface region including stacked layers of the second portion, and in a partial region of the first surface region, a number of the stacked layers of the second portion is 10 or more in the in the first axial direction.

Abstract: A battery includes an electrode assembly including a first electrode, second electrode, and a separator between the first electrode and the second electrode, the first electrode including a first region coated with an active material and a second region at a first side and adjacent to the first region, the second region being exposed beyond the separator, and at least part of the second region is an electrode tab; a housing including a first end with a first opening, the housing accommodating the electrode assembly; a first current collector including an edge portion on the electrode assembly, a second region coupling portion extending from the edge portion and coupled with the second region, and a terminal coupling portion spaced apart from the second region coupling portion; and a terminal coupled with the terminal coupling portion.

Abstract: An electrode assembly includes a cathode; an anode; and separators located between the cathode and the anode, wherein the separators include a first separator located on one surface of the cathode and a second separator located on one surface of the anode, wherein the cathode, the first separator, the anode, and the second separator are wound together to form a jelly-roll structure, and wherein based on the radial direction of the jelly-roll structure, a region in which the separators are overlapped in two or more layers exists between the edge part of the cathode and the anode.

Abstract: In the electrode assembly, the first uncoated portion provided at a long side end of a first electrode includes a segment region divided into a plurality of independently bendable segments by a plurality of cut grooves provided along a winding direction. The segment region includes a plurality of segment groups disposed with a group separation pitch along the winding direction. The plurality of segment groups constitute at least one segment alignment on one side of the electrode assembly. At least some of central points of winding turn arcs where the p number of segment groups are located are not located on a predetermined alignment line extending in the radial direction from the center of the core.

Abstract: A drying device includes a first dryer configured to dry an electrode active material located in a coating boundary region having a boundary of a portion in which the electrode active material is coated and a portion in which the electrode active material is not coated on an electrode current collector, and a second dryer configured to dry at least the electrode active material located in a region other than the coating boundary region on the electrode current collector.

Abstract: Disclosed is a fixing structure of an electrode terminal, and a battery, a battery pack and a vehicle including the same. The fixing structure of an electrode terminal includes a battery housing configured to be opened at one side and have a bottom at the other side in which a perforation hole is formed; an electrode terminal installed through the perforation hole not to contact an inner wall of the perforation hole; and a terminal gasket interposed between the electrode terminal and the perforation hole, and the electrode terminal includes a body portion inserted into the perforation hole; an outer flange portion configured to extend along an outer surface of the bottom of the battery housing from a first side of the body portion; an inner flange portion configured to extend toward an inner surface of the bottom of the battery housing from a second side of the body portion; and a flat portion provided to an inner side of the inner flange portion.

Abstract: An electrode assembly, a battery, a battery pack and a vehicle including the same are provided. In the electrode assembly, the uncoated portion of an electrode includes a segment region divided into a plurality of segments, and the segment region includes a plurality of segment groups separated by a group separation pitch along a winding direction. One end of the electrode assembly includes a plurality of segment alignments. In winding turns corresponding to the plurality of segment alignments, group separation pitches of segment groups disposed in a same winding turn are substantially identical, and separation pitches of the segment groups is greater in a winding turn of a region adjacent to the outer circumference of the electrode assembly than in a winding turn of a region adjacent to the core of the electrode assembly.

Abstract: A cylindrical secondary battery includes an electrode assembly having a positive electrode, a negative electrode, and a separator located between the positive electrode and the negative electrode, the positive electrode, the negative electrode, and the separator being wound in a winding direction, the positive electrode including a positive electrode uncoated portion exposed beyond the separator, the negative electrode including a negative electrode uncoated portion exposed beyond the separator, a positive electrode current collector plate coupled to the positive electrode uncoated portion by one or more positive electrode welding portions, and a negative electrode current collector plate coupled to the negative electrode uncoated portion by one or more negative electrode welding portions.

Abstract: Discussed is a battery including an electrode assembly having a first electrode, a second electrode and a separator wound about an axis, and each of the first electrode and the second electrode has a first portion including an active material corresponding to the separator, and a second portion exposed beyond the separator and not coated with the active material, a housing having a first end with a first opening and a second end with a second opening opposite the first end, the housing accommodating the electrode assembly, a terminal electrically connected to the second portion of the first electrode and exposed out of the housing through the first opening of the housing at the first end, a cap at the second end of the housing, and an insulating gasket having an extended shape to cover the outer circumferential surface of the terminal.

Abstract: A jelly roll includes an electrode assembly made by winding a stack of a first electrode, a separator, and a second electrode, and an insulation tape configured to cover at least a part of a lateral surface of the electrode assembly and at least a part of an end of the electrode assembly, in which the insulation tape has at least one notching pattern provided in a region that covers at least a part of the end of the electrode assembly. The jelly roll can be used in a secondary battery, a battery module, and a battery pack.

Abstract: An electrode assembly, a battery, a battery pack and a vehicle including the same are provided. The first electrode of the electrode assembly includes a first active material portion coated with an active material layer and a first uncoated portion not coated with an active material layer along a winding direction, the first uncoated portion includes a plurality of segments independently bendable along the winding direction and exposed beyond a the separator of the electrode assembly, the plurality of segments are aligned along a radial direction of the electrode assembly to define a plurality of segment alignments spaced apart in a circumferential direction of the electrode assembly, and an electrolyte impregnation portion in which an end of the first active material portion is exposed between winding turns of the separator is included between adjacent segment alignments of the first uncoated portion in the circumferential direction.