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: An electric compressor of an air conditioning system and a control method thereof. In one method, a stable operation of the electric compressor is ensured by means of logic to protect an inverter unit provided in the electric compressor before an inverter element is damaged due to overheating, so that safety can be secured.

Abstract: An electronic including a transceiver configured to receive, from at least one wearable device, information indicating whether the at least one wearable device is being worn; and a processor configured to determine whether the at least one wearable device that is being worn, based on the received information indicating whether the at least one wearable device is being worn, and to provide a notification to the at least one wearable device in response to determining that the at least one wearable device is being worn.

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: Proposed is a combined structure, and the combined structure includes a coupling target object having a coupling space that comprises a first space and a second space communicating with each other, a damper structure accommodated in the first space and including a flexible portion having a hollow therein and a hard portion coupled to the flexible portion and having one surface exposed to an outside, and a coupling unit accommodated in the second space, a portion of which is in contact with one surface of the hard portion. The hollow is closed from the outside in the damper structure. In response to rotation of the coupling unit in the second space, another portion different from the portion of the coupling unit comes into contact with the hard portion.

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: A secondary battery includes a wound electrode assembly having a first electrode, a separator, and a second electrode, and a battery can configured to accommodate the electrode assembly, the battery can having a partially closed portion at one side thereof, an open portion at the other side opposite to the partially closed portion, and a cylindrical sidewall, the electrode assembly having a first end from which a first electrode tab is extended, and a second end from which a second electrode tab is extended, the first end and the battery can being electrically connected, the sidewall of the battery can having an insulative coating layer provided on an inner surface corresponding to the second end. A second current collecting plate is electrically connected to the second electrode tab. An insulation member is provided between the second current collecting plate and the bottom portion of the battery can.

Abstract: A welding device includes a welding rod configured to be inserted into a winding center hole provided at a winding center of an electrode assembly inserted into a battery can to weld an electrode tab of the electrode assembly or an electric connection component coupled with the electrode tab to a bottom surface of the battery can. The welding rod includes a center rod located at a center of the welding rod; and an exterior cover configured to cover an outer circumference of the center rod. The exterior cover is configured to be movable in a first direction away from the center rod and in a second direction toward the center rod.

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.

Abstract: A riveting structure of an electrode terminal, and a cylindrical battery cell, a battery pack, and a vehicle including the same includes: a battery can with one side open; an electrode terminal riveted through a through hole formed in a bottom of the battery can; and a gasket provided between the electrode terminal and an outer diameter of the through hole, and the gasket includes a fluorine resin.

Abstract: A separator for an electrochemical device, including: a porous polymer substrate having a first surface and a second surface opposite the first surface; a first organic/inorganic composite porous layer on the first surface of the porous polymer substrate where the first organic/inorganic composite porous layer includes first inorganic particles and a first binder polymer; and a second organic/inorganic composite porous layer on the second surface of the porous polymer substrate where the second organic/inorganic composite porous layer includes the first inorganic particles, second inorganic particles and a second binder polymer. The first inorganic particles have an average particle diameter of 1 nm to 100 nm, and the second inorganic particles have an average particle diameter larger than the average particle diameter of the first inorganic particles. The separator shows improved high-temperature safety and assembling processability.

Abstract: An electrode assembly including a first electrode, a second electrode, and a separation file interposed between the first electrode and the second electrode, the first electrode, the second electrode, and the separator being wound in one direction about a winding axis is provided. Each of the first electrode and the second electrode has a sheet shape with a pair of long sides and an uncoated portion not coated with an active material layer on one of the long sides. The first electrode includes at least one insulation layer that simultaneously covers a portion of the uncoated portion and a portion of the coated portion. A cylindrical battery cell and a battery pack are also provided.

Abstract: A jelly-roll type electrode assembly according to an embodiment of the present disclosure comprises a wound sheet-like laminate including an electrode and a separator. The separator includes a double-sided coating layer. The coating layer includes a mixture of a first alumina and a second alumina. The second alumina is contained in an amount of 16 to 40 parts by weight, based on 100 total parts by weight of the mixture. A particle diameter of the first alumina is smaller than a particle diameter of the second alumina.

Abstract: Discussed is a battery including an electrode assembly having a first electrode, a second electrode and a separator between the first electrode and the second electrode, 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 and electrically connected to the second electrode to have a second polarity, a terminal electrically connected to the first electrode to have a first polarity, the terminal being 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. The cap overlaps the battery housing at the second end and has no polarity.

Abstract: An electrode assembly, a battery, and a battery pack and a vehicle including the same are provided. One end of the electrode assembly includes a plurality of segment alignments in which the plurality of segment groups are aligned along a radial direction, and an electrolyte impregnation portion provided between segment alignments adjacent in a circumferential direction, wherein an end of the first active material portion is exposed between winding turns of the separator. The segments included in the segment alignment are bent toward the core to form a bending surface region. An end of the separator is spaced apart from a criterion line extending in a winding axis direction along a location corresponding to the plurality of cut grooves by 30% or less of a minimum height of the segments forming the bending surface region.

Abstract: A compressor and a method for controlling the compressor detects the state of the suction refrigerant, thereby preventing the damage of the compressor and enabling stable operation. The compressor includes a compression unit equipped with a compression means for compressing a refrigerant, a motor unit coupled to the compression unit and compresses a suction refrigerant sucked through a suction port, an inverter unit with a detection unit for detecting a state of the suction refrigerant sucked through the suction port, and a control unit which controls the compression unit. The control unit controls by comparing a low flow condition which is set on the basis of a state in which the compression unit operates under an operating condition of a low refrigerant amount of the suction refrigerant and an actual flow condition of the suction refrigerant sucked into the motor unit when the compression unit is actually operated.