Abstract: A filter holder comprises: a plurality of filter frames disposed such that at least some thereof are adjacent to each other; and a folding member which supports filter frames, from among the plurality of filter frames, adjacent to each other so as to be rotatable with respect to each other. The folding member comprises: a folding part which has a predetermined thickness and is flexible so as to be foldable by means of rotation of the adjacent filter frames adjacent with respect to each other; and a plurality of edge parts which are connected to the respective sides of the folding part with the folding portion therebetween and rotate together with the adjacent filter frames, and wherein when viewed from a cross-section of the folding member, the edge parts may have a greater thickness than the folding part.

Abstract: An air filter comprises: a first filter frame in which a plurality of first chambers are formed; a second filter frame in which a plurality of second chambers are formed and which is arranged at the rear of the first filter frame; and a filter material which is accommodated in the plurality of first chambers and the plurality of second chambers to filter air, wherein the first filter frame and the second filter frame are arranged so that, when seen from the front, the center of each of the plurality of second chambers is out of line with the center of each of the plurality of first chambers, in the vertical direction.

Abstract: A prelithiated negative electrode, and a secondary battery including a prelithiated electrode, including a negative electrode current collector; and a negative electrode active material layer present on at least one surface of the negative electrode current collector. The negative electrode active material layer includes high-capacity artificial graphite having no carbon coating. The negative electrode active material layer is prelithiated, and the content of lithium intercalated to the prelithiated negative electrode active material layer is 3% to 5% based on the lithium content intercalated when the negative electrode is charged to 100%.

Abstract: A vehicle seat reinforcement device includes a leg portion mounted on a floor panel, a seat cushion frame slidably mounted on the leg portion, and a load reinforcing structure connected between the leg portion and the seat cushion frame, wherein when a seat belt anchorage load is transferred to the seat cushion frame, the seat cushion frame is locked to the leg portion by the load reinforcing structure.

Abstract: Disclosed herein to a method and apparatus for synchronizing signals. According to an embodiment of the present disclosure, there is provided a method for synchronizing a signal. The method comprising: receiving a reference time and performing time synchronization with the reference time; calculating a clock frequency of a system clock based on the reference time; and generating a sampling clock by using the calculated clock frequency of the system clock and a preset sampling frequency.

Abstract: The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed thereon by coating, a step of slitting the electrode sheet into a plurality of unit electrode sheets, and a step of notching the slit electrode sheet, wherein the uncoated portion includes an electrode tab formation portion and a folding portion formed so as to be parallel to a direction in which the electrode sheet is taken out.

Abstract: The present invention relates to a pouch-shaped battery cell having an electrode assembly in a pouch-shaped battery case, the electrode assembly including positive electrodes and negative electrodes, each of the positive electrodes and the negative electrodes having a structure in which the length of the electrode in a width direction is less than the length of the electrode in a length direction, each of the positive electrodes and the negative electrodes has an uncoated portion extending parallel to outer peripheries of the electrode in the overall width direction or outer peripheries of the electrode in the overall length direction and a coated portion, which is coated with an electrode mixture, formed at the remaining portion of the electrode excluding the uncoated portion, and a stepped structure is formed at the part of the pouch-shaped battery case corresponding to the uncoated portion so as to be recessed inwards.

Abstract: The present invention relates to an electrode manufacturing method for manufacturing a foldable battery cell, the electrode manufacturing method including a coating step of forming an electrode mixture coated portion on an electrode sheet so as to include an uncoated portion having no electrode mixture formed thereon by coating, a step of slitting the electrode sheet into a plurality of unit electrode sheets, and a step of notching the slit electrode sheet, wherein the uncoated portion includes a first uncoated portion formed so as to be parallel to a direction in which the electrode sheet is taken out and a second uncoated portion formed so as to be perpendicular to the direction in which the electrode sheet is taken out.

Abstract: A method for manufacturing a negative electrode, including the steps of preparing a negative electrode slurry including low-expansion natural graphite, a binder polymer, a conductive material and a dispersion medium; applying the negative electrode slurry to at least one surface of a negative electrode current collector, drying the coated negative electrode slurry, to form a preliminary negative electrode having a preliminary negative electrode active material layer; and pressing the preliminary negative electrode to obtain the negative electrode having a finished negative electrode active material layer. A difference between the specific surface area of the preliminary negative electrode active material layer before pressing and that of the finished negative electrode active material layer after pressing is 0.5 m2/g to 1.0 m2/g. A negative electrode obtained by the method and a secondary battery including the negative electrode are also disclosed.

Abstract: Disclosed is a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material. The negative electrode active material includes SiOx(0.5<x<1.8) and Lia1Tib1O4(0.8?a1?1.4, 1.6?b1?2.2). The Lia1Tib1O4 has an average particle diameter (D50) of 300 nm to 10 ?m, and a/b satisfies 0.4<a/b<1.7. Herein, a is an amount in wt % occupied by the SiOx in the negative electrode active material layer, and b is an amount in wt % occupied by the Lia1Tib1O4 in the negative electrode active material layer.

Abstract: The present disclosure relates to an electrode for a lithium secondary battery and a lithium secondary battery including the same, the electrode including: a current collector; and an electrode material layer containing an active material and a binder that is formed on at least one surface of the current collector, wherein, when the electrode material layer is divided in half based on the thickness, the upper layer located away from the current collector and corresponding to the thickness of ½ is referred to as an electrode material layer A, and the lower layer located close to the current collector and corresponding to the thickness of ½ is referred to as an electrode material layer B, each of the electrode material layer A and the electrode material layer B contains one or more active material layers, and satisfies all of the conditions (1) to (3) described in claims.

Abstract: Disclosed is a negative electrode including a negative electrode active material layer, wherein the negative electrode active material layer includes a negative electrode active material and a conductive agent. The negative electrode active material includes carbon-based active material particles including natural graphite and an amorphous carbon-based material. The carbon-based active material particles have a specific surface area of 1.4 m2/g to 2.3 m2/g, and the conductive agent includes carbon nanotubes having an average length of 1 ?m to 12 ?m. A secondary battery including the negative electrode is also disclosed.

Abstract: A sealing device for a secondary battery, the sealing device configured to seal a sealing part of a pouch through which an electrode lead extends according to the present invention comprises: a lower sealing tool configured to receive the sealing part of the pouch seated thereon; and an upper sealing tool configured to press and seal the sealing part of the pouch, wherein the lower sealing tool comprises: a lower fixed block configured to receive the sealing part of the pouch seated on a top surface thereof; and one or more lower detachable blocks detachably coupled to the lower fixed block and configured to support a portion of the sealing part through which the electrode lead does not extend.

Abstract: The present disclosure provides an electrode assembly including a unit cell stack having n unit cells stacked with a separation film interposed therebetween and at least one reinforcing member formed from metal that integrally covers at least one of the upper and lower surfaces and at least one side surface of the unit cell stack. In particular, n is an odd number excluding 1. Additionally, in each unit cell, one or more cathodes and one or more anodes are stacked with a separator interposed therebetween. Accordingly, the unit cells are protected against external impacts.

Abstract: A secondary battery cell module-type activation tray for transferring and charging a plurality of battery cells in a manufacturing process of a secondary battery, including a plurality of module trays that are embedded from one side opened to accommodate a plurality of battery cells in a plurality of rows to another side opposite thereto, the battery cells being disposed in a respective module tray, and each of the module trays has a structure that can be coupled or separated as extended in one direction or multiple directions in a plan view.

Abstract: A capacitor includes an electrode assembly, having at least one positive electrode, at least one negative electrode, and at least one dielectric or separator interposed between the positive electrode and the negative electrode, and a case for receiving the electrode assembly. The electrode assembly is configured such that the positive electrode, the negative electrode, and the dielectric or the separator are arranged in a horizontal direction, which is perpendicular to the thickness direction of the electrode assembly, and such that the positive electrode and the negative electrode have a complementary pattern.

Abstract: The present disclosure provides a battery cell clamping device to fix and clamp two or more battery cells in a process of clamping and baking the battery cells arranged in one direction, including fixing jigs interposed between the battery cells, a pressure applying part configured to clamp a cell arrangement by applying a pressure with the fixing jigs interposed, and a base having a structure supporting the cell arrangement in a direction against the pressure applied from the pressure applying part in a state in which the cell arrangement is disposed on an upper surface of the base, wherein each of the fixing jigs is formed with guide blocks to align the battery cell at a fixed position on the jig in such a manner that the guide block abuts at least two side surfaces of the battery cell which are extended with respect to each other.

Abstract: Provided is a tray capable of receiving batteries having various sizes. The tray includes a housing provided with a receiving portion for receiving a secondary battery. It also includes a blocking portion coupled to the housing to cross the receiving portion for adjusting the size of the receiving portion.

Abstract: Disclosed herein is a battery cell configured such that an electrode assembly, including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, is mounted in a receiving part formed in a battery case, a positive electrode terminal and a negative electrode terminal protrude from at least one side of the electrode assembly, and an insulative material is provided between the electrode assembly and the battery case.

Abstract: Present disclosure relates to a variable jig which is a jig device to manufacture a battery cell in which an electrode assembly is embedded in a battery case made of a laminate sheet including a resin layer and a metal layer, including a die assembly having an inwardly recessed structure corresponding to a storage configured to mount the electrode assembly located on the laminate sheet or a portion to be molded as the storage; and a fixing die configured to fix an outer periphery of the sheet in a normal position, wherein the die assembly is configured to allow adjustment of at least one of a width or a length of the inward recess according to a size of the electrode assembly.