Abstract: A cylindrical battery cell, a battery pack and a vehicle including the same are provided. The cylindrical battery cell includes an electrode assembly having a first electrode plate and a second electrode plate wound in one direction with a separator being interposed therebetween, the first electrode plate including a first uncoated region in which an active material layer is not coated at an end of a long side, the first uncoated region providing a plurality of winding turns with respect to a center of the electrode assembly; a battery can having an open portion and a partial closed portion provided at a side opposite of the open portion; a current collector plate electrically connected to the first uncoated region of the first electrode plate and having a fusing portion that is cut off when an overcurrent flows; and a cell terminal.

Abstract: Provided is a high-strength cold-rolled steel sheet having excellent surface quality and low mechanical property deviation; and a manufacturing method thereof and, more particularly, to: a high-strength cold-rolled steel sheet that can be suitably used for automotive parts by ensuring high strength and elongation with little surface defects and low mechanical property deviation; and a manufacturing method thereof.

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cell, wherein the connection unit includes: a connection member electrically connected to the electrode terminal and withdrawn to the outside of the main body; a support member for supporting the connection member; and a fixing member for fixing the support member on the main body.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 are provided. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on a winding axis to define a core and an outer circumference, the first electrode includes a first active material portion coated with an active material layer along a winding direction and a first uncoated portion not coated with an active material layer, the first uncoated portion includes a plurality of independently bendable segments, a cut groove is interposed between adjacent segments along the winding direction, and a lower portion of the cut groove has a round portion.

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: 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 artificial neural network extraction method is disclosed. The artificial neural network extraction method is performed by a computing device which can communicate with a server for providing Machine-Learning-as-a-Service (MLaaS) and which includes at least a processor, the method comprising the steps of: acquiring a page table of a process to be attacked; acquiring, on the basis of the page table, heap area data of the process to be attacked; acquiring, on the basis of the heap area data, an artificial neural network instance of the process to be attacked; and extracting a structure of an artificial neural network model on the basis of the artificial neural network instance.

Abstract: The present invention relates to a method and system of generating a three-dimensional (3D) map. The 3D map generating method of the present invention includes: collecting spatial data and image data on a specific space by using a lidar sensor and a camera sensor that are each provided on a collecting device; estimating a movement trajectory of the lidar sensor by using the spatial data; and generating 3D structure data on the specific space based on structure-from-motion (SFM), by using the image data and the movement trajectory as input data.

Abstract: A synthesis method according to the present disclosure includes preparing a mixture by mixing a lactic acid derivative, alkyl acetate, and methane sulfonic acid, and obtaining a final product by inputting alkyl acetate in the process of removing a distillate through fractional distillation of the mixture.

Abstract: A hydro bushing includes a main body configured for absorbing shocks using a sealed fluid; a side stopper including a shock absorber and having a hollow cylindrical structure; and a housing fixing the side stopper and the main body, wherein the main body and the side stopper are separable from each other.

Abstract: According to one aspect of the present invention, a secondary battery has a bent part disposed on an end of an upper portion of the battery can. The bent part is bent inward toward a top cap to fix the top cap. The secondary battery is configured such that, when an internal pressure of the battery can exceeds a predetermined value, a region (R) in which the top cap and the bent part overlap each other when viewed from above is reduced by deformation of the top cap or the bent part to allow an entire region of the top cap to become spaced further from the battery can.

Abstract: Suggested is an antenna module in which a radiation pattern for ultra-wideband communication and at least one of a radiation pattern for short-range communication, a radiation pattern for transmitting and receiving wireless power, a radiation pattern for electronic payment are integrally formed to enable communication with a vehicle. The suggested antenna module comprises: a first antenna having a first radiation pattern resonating in a first frequency band; and a second antenna disposed on one surface of the first antenna and having a second radiation pattern resonating in a UWB frequency band different from the first frequency band. The first antenna includes a base substrate on which the first radiation pattern is formed and an extension substrate extending outward from the base substrate, and the second antenna is disposed on the upper surface of the extension substrate.

Abstract: An electrode coating die includes a slurry discharge part configured to discharge an active material slurry onto a current collector; and a dam liquid discharge part provided on at least one side of the slurry discharge part and configured to discharge a dam liquid to form a dam layer covering at least a portion of an inclined surface portion provided at an edge portion of an active material slurry layer coated with an active material slurry discharged from the slurry discharge part, and an electrode coating apparatus including the same. Further, the present invention provides a method of manufacturing an electrode, the method including: a preparing operation of preparing an active material slurry including an active material, a conductive material, and a solvent; and a coating operation of applying the active material slurry on a current collector.

Abstract: An electrode assembly includes a first electrode, a second electrode, and a separator interposed therebetween. The first electrode, the second electrode and separator are wound in a winding direction about a winding axis to define a core and an outer circumference of the electrode assembly. The first electrode includes an active material portion coated with an active material layer and a first non-coated portion not coated with the active material layer along the winding direction. The first non-coated portion includes a plurality of impregnation slits extending along a circumferential direction of the electrode assembly. Longitudinal extension lines of impregnation slits adjacent to each other along the circumferential direction do not overlap each other.

Abstract: Discussed is an electrode assembly having a positive electrode, a negative electrode, and a separator wound around a winding axis, wherein the positive electrode or the negative electrode includes a current collector that has sheet-shape and having a long side and a short side and has an uncoated portion at an end of the long side, wherein the uncoated portion includes an electrode tab defined section used as an electrode tab by itself and at least one electrode tab undefined section not used as an electrode tab, wherein a maximum current path includes a widthwise direction current path along the short side of the current collector and a lengthwise direction current path along the long side of the current collector, and a current path ratio L2/L1 is approximately 11 or less when lengths of the lengthwise direction current path and the widthwise direction current path are L1 and L2, respectively.

Abstract: Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on a winding axis to define a core and an outer circumference. The first electrode 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. At least a part of the first uncoated portion is defined as an electrode tab by itself. The first uncoated portion includes a first portion adjacent to the core of the electrode assembly, a second portion adjacent to the outer circumference of the electrode assembly, and a third portion interposed between the first portion and the second portion. The first portion or the second portion has a smaller height than the third portion in the winding axis direction.

Abstract: Disclosed is an electrode assembly, a battery, and a battery pack and a vehicle including the same. 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 an uncoated portion at a long side end thereof and exposed out of the separator along a winding axis direction of the electrode assembly. A part of the uncoated portion is bent in a radial direction of the electrode assembly to form a bending surface region that includes overlapping layers of the uncoated portion, and in a partial region of the bending surface region, the number of stacked layers of the uncoated portion is 10 or more in the winding axis direction of the electrode assembly.

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 are a spinning dope for an aramid and carbon-nanotube composite fiber and a method of manufacturing an aramid and carbon-nanotube composite fiber using the same.