Abstract: An apparatus for manufacturing a secondary battery includes: an index table configured to receive a secondary battery cell, the secondary battery cell including an electrode assembly, a can accommodating the electrode assembly, and an electrode tab between the electrode assembly and the can to electrically connect the electrode assembly to the can; a laser scanner configured to irradiate laser onto an outer surface of the can to weld the electrode tab to the can; and a controller configured to variably control the laser scanner according to an operation of the index table.

Abstract: A secondary battery may include: an electrode assembly in which first and second electrode sheets are stacked and wound with a separation sheet interposed therebetween, wherein a first electrode tab protrudes in the first electrode sheet, and a second electrode tab protrudes in the second electrode sheet; a battery can to accommodate the electrode assembly therein; and a connection part above or below the electrode assembly and facing the electrode assembly, wherein the connection part has a first area made of an electrically conductive gel material; and a second area attached to the first area and made of an electrically insulating material, wherein the second area forms at least a portion of a top surface of the connection part, and at least a portion of the first electrode tab or the second electrode tab is inserted into the first area of the connection part.

Abstract: The present invention relates to a vibration test jig for a cylindrical battery cell, including: a main body for accommodating a cylindrical battery cell; and a connection unit electrically connected to an electrode terminal of the cylindrical battery cell, wherein the connection unit includes: a connection member electrically connected to the electrode terminal and withdrawn to the outside of the main body; a support member for supporting the connection member; and a fixing member for fixing the support member on the main body. The vibration test jig enables the cylindrical battery cell mounted in the jig to be electrically connected to an external voltage and resistance measuring device through the connection unit. During a vibration test, an electrical state of the battery cell can be monitored in real time, and it can be checked whether and when an electrode tab is disconnected by using the measured voltage or resistance value.

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: An electrode assembly includes an anode; a cathode; and a separator between the anode and the cathode rolled together. The anode includes an anode current collector and an anode active material portion applied onto the anode current collector, and the cathode includes a cathode current collector and a cathode active material portion applied onto the cathode current collector. An anode uncoated portion of the anode current collector at which the anode active material is not applied extends in a first direction, and a cathode uncoated portion of the cathode current collector at which the cathode active material is not applied extends in an opposite direction. The cathode active material portion includes a loading reduction portion in which a loading amount of the cathode active material is smaller than that of an adjacent region. The loading reduction portion is at one end part of the cathode in the first direction.

Abstract: A battery cell activation tray includes a tray main body including a plurality of accommodation grooves configured to receive a plurality of battery cells therein, the tray main body having an upper portion that is open, a lower plate located under the tray main body, the lower plate having a main flow path to allow a fluid to move therethrough, and a temperature controller fluidly connected to the main flow path to control a temperature of the fluid introduced into the main flow path. The fluid is introduced into the main flow path in the lower plate to control a temperature of the plurality of battery cells accommodated in the accommodation grooves of the tray main body.

Abstract: Disclosed is a radar antenna including an antenna body including a first plate and a second plate; a slot radiation part and a slot reception part formed in the first plate; a transmission port and a reception port formed in the second plate; and a waveguide formed by assembling the first and second plates. The slot radiation part includes a first slot radiation part configured to radiate a radio wave in a first detection range, and a second slot radiation part configured to radiate radio waves in a second detection range having a larger width and distance than the first detection range.

Abstract: A winding device for manufacturing an electrode assembly is provided. The winding device includes a main body portion; a winding core for winding an electrode and a separation film; and a foreign particle remover connected to the main body portion and removing foreign particles, wherein the foreign particle remover is formed to surround the winding core while separated from the winding core.

Abstract: A method for manufacturing an antenna module ceramic substrate is provided. Provided is a method for manufacturing an antenna module ceramic substrate, according to one embodiment of the present invention, the method comprising the steps of: stacking a first base material layer and a second base material layer so that each of a radiation pattern formed between the first and second base material layers and a connection pattern formed inside the second base material layer to be electrically connected with the radiation pattern are provided; compressing the first and second base material layers; and calcinating the compressed first and second base material layers.

Abstract: Provided is an ultra-high-strength cold-rolled steel sheet having excellent yield strength and bending properties, which can be used as a structural component for automobiles such as a member, a seat rail, and a pillar, and a method for manufacturing same. The steel sheet includes: by weight: C: 0.03 to 0.12%, Si: 0.03 to 0.3 Mn: 2.1 to 2.9%, Al: 0.005 to 0.07%, Nb: 0.01 to 0.08%, Ti: 0.005 to 0.08%, B: 0.0005 to 0.005%, Cr: 0.7 to 1.4%, Mo: 0.005 to 0.10%, N: 0.008% or less (excluding 0%), with balance of Fe and inevitable impurities. A microstructure thereof includes by area, fresh martensite: 4 to 19%, a sum of tempered martensite and bainite: 78 to 95%, and retained austenite: 0.2 to 2.0%. An average grain size of the microstructure is 0.5 to 6 ?m.

Abstract: Embodiments relate to laser welding methods, monitoring methods, and monitoring systems for a secondary battery. A laser welding method for a secondary battery includes performing laser welding on a positive electrode base having a thin-film shape in which a plurality of positive electrode base tabs are formed at a side, a negative electrode base having a thin-film shape in which a plurality of negative electrode base tabs are formed at a side, and a thin-film multi-tab to be joined to each of the positive electrode base and the negative electrode base, a welded portion in which the multi-tab is welded with the positive electrode base and the negative electrode base being melting-joined by using a laser such that a plurality of welding spots is formed on the welded portion.

Abstract: Disclosed is a fuel cell-based multiple power supply system, and more particularly a fuel cell-based multiple power supply system capable of alternately operating a polymer electrolyte membrane fuel cell that is rapidly started up and provides fast response and a solid oxide fuel cell that provides high power generation efficiency depending on required situations and remedying some power deficiency using an energy storage system or a secondary battery, such as a super capacitor, thereby flexibly dealing with a situation difficult to solve using a single fuel cell.

Abstract: An antenna module comprises a plurality of directors provided to be spaced apart from each other on the top surface of a first base layer; a second base layer disposed under the first base layer; a plurality of radiation patterns spaced apart from each other at positions corresponding to the respective directors on the top surface of the second base layer and functioning as antennas; an RF chipset disposed on bottom surface of the second base layer to transmit and receive RF signals; a connection pattern comprising a power feeding via electrode penetrating the second base layer and connecting the RF chipset and the radiation pattern; and a grounding via electrode that penetrates a part of the second base layer, is spaced apart from a side surface of the power feeding via electrode, and surrounds at least a portion of the side surface of the power feeding via electrode.

Abstract: An antenna module is provided. An antenna module includes a radiation pattern that functions as an antenna; a base layer disposed on one side of the radiation pattern and implemented by stacking a plurality of low-temperature co-fired ceramic (LTCC) substrates to have a connection pattern electrically connected to the radiation pattern; an RF chipset electrically connected to the radiation pattern through the connection pattern to generate an RF signal to be transmitted from the radiation pattern or to process an RF signal received from the antenna; a thermal interface material (TIM) disposed at one side of the RF chipset to transfer heat generated from the RF chipset; a heat sink disposed at one side of the TIM to spread heat transferred from the TIM; and a fan disposed at one side of the heat sink to cool the heat sink by introducing outside air.

Abstract: A secondary battery may include: an electrode assembly in which first and second electrode sheets are stacked and wound with a separation sheet interposed therebetween, wherein a first electrode tab protrudes in the first electrode sheet, and a second electrode tab protrudes in the second electrode sheet; a battery can to accommodate the electrode assembly therein; and a connection part above or below the electrode assembly and facing the electrode assembly, wherein the connection part has a first area made of an electrically conductive gel material; and a second area attached to the first area and made of an electrically insulating material, wherein the second area forms at least a portion of a top surface of the connection part, and at least a portion of the first electrode tab or the second electrode tab is inserted into the first area of the connection part.

Abstract: Provided is a high-strength hot-dip galvanized steel sheet having excellent ductility and formability. The hot-dip galvanized steel sheet contains, by wt %, 0.06 to 0.16% of carbon (C), 0.8% or less (excluding 0%) of silicon (Si), 2.1 to 2.7% of manganese (Mn), 0.4% or less (excluding 0%) of molybdenum (Mo), 1% or less (excluding 0%) of chromium (Cr), 0.1% or less (excluding 0%) of phosphorus (P), 0.02% or less of sulfur (S), 1% or less (excluding 0%) of aluminum (sol.Al), 0.001 to 0.04% of titanium (Ti), 0.001 to 0.04% of niobium (Nb), 0.01% or less (excluding 0%) of nitrogen (N), 0.01% or less of boron (B), 0.05% or less of antimony (Sb), and a balance of Fe and unavoidable impurities.

Abstract: Discussed is a battery that may include an electrode assembly including a first electrode, a second electrode and a separator wound around a winding axis, wherein the first electrode includes a first active material region coated with a first active material layer and a first uncoated region not coated with the first active material layer, and at least a part of the first uncoated region being an electrode tab; a first current collector coupled to at least a 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 interposed between at least one of the first uncoated region and the first current collector and an inner surface of the battery housing facing the at least one of the first uncoated region and the first current collector to block an electrical connection between the battery housing and the at least one of the first uncoated region and the first current collector.

Abstract: A battery cell fixing device includes a plurality of holders configured to be coupled to a cylindrical battery cell along an outer circumference of the cylindrical battery cell, and each of the plurality of holders includes a holder body configured to cover a part of the outer circumference of the cylindrical battery cell; and a beading fixer configured to protrude toward the cylindrical battery cell from the holder body and to be inserted into a beading portion that is formed in the outer circumference of the cylindrical battery cell.

Abstract: Provided are an ultra-high strength cold rolled steel sheet having excellent bendability, and a method of manufacturing the same. The steel sheet includes 0.06 to 0.17% of C, 0.1 to 0.8% of Si, 1.9 to 2.9% of Mn, 0.005 to 0.07% of Nb, 0.004 to 0.05% of Ti, 0.0004 to 0.005% of B, 0.20% or less (excluding 0%) of Cr, and 0.04 to 0.45% of Mo, with a balance of Fe and other unavoidable impurities. a microstructure of the steel sheet includes, by area: 80 to 98% of tempered martensite and a balance of fresh martensite, bainite, ferrite, and residual austenite. An average length of lath short axis of the tempered martensite is 500 nm or less.