Abstract: The present technology relates to a method of inspecting a welding defect. The method includes: manufacturing an electrode assembly sample by welding an electrode lead on an electrode tab formed on an electrode assembly; measuring a tensile strength, a torsional strength and a peeling strength of a welded portion between the electrode tab and the electrode lead for the electrode assembly sample; deriving correlation between whether there is a welding defect and each of the tensile strength, the torsional strength, and the peeling strength; and deriving a reference value for determining whether there is a welding defect for the tensile strength, the torsional strength, and the peeling strength, respectively.

Abstract: An apparatus for preparing a unit cell is provided. The apparatus includes a lower separator reel from which a lower separator sheet is unwound, a first nozzle configured to apply an adhesive to at least a portion of one surface facing upward of the unwound lower separator sheet, an upper separator reel from which an upper separator sheet is unwound, a second nozzle configured to apply an adhesive to at least a portion of one surface facing upward of the unwound upper separator sheet, and a first nip roll configured to turn opposite surfaces of the upper separator sheet upside down so that the one surface of the upper separator sheet to which the adhesive has been applied is directed downward and adheres to an upper surface of a first electrode stably placed on the one surface of the lower separator sheet.

Abstract: An electrode assembly includes a plurality of electrodes and a connection component. The electrodes are arranged in a stack along a stacking dimension with a respective separator portion positioned between each of the electrodes. Each of the electrodes has an outer perimeter within a plane extending transverse to the stacking dimension, and the separator portions each have a respective overhanging portion protruding outwardly in a lateral dimension beyond the outer perimeters of adjacent ones of the electrodes, where the lateral dimension is oriented transverse to the stacking dimension. The connection component extends between and connects at least two adjacent overhanging portions of the separator portions. The connection component comprises a network of strands of material, a plurality of which cross over other strands so as to define respective crossing locations. A region of the connection component includes multiple crossing locations spaced apart from one another in the stacking dimension.

Abstract: A refill container removably stored in a cosmetic compact includes: a main body being open at an upper part thereof and having a housing space inside thereof, an upper end sealing protrusion part, a lateral sealing protrusion part provided at an outer surface of the inner wall, and an outer wall being provided outside the inner wall with a predetermined gap therebetween; and a mesh fabric cover having a cylindrical first vertical extension part combined with the inner wall and the outer wall by being inserted into a gap provided therebetween such that an inner surface of the first vertical extension part is in close contact with the lateral sealing protrusion part, and a first rim part provided at an upper end of first vertical extension part.

Abstract: A unit cell includes a separator and an electrode, which are alternately laminated by a predetermined number. The unit cell is configured such that: the unit cell is laminated in the order of a lower separator, any one electrode of an anode or a cathode, an upper separator, and the other one electrode of the anode or the cathode, wherein at least one surface of the electrode and the separator is applied with an adhesive to adhere the electrode and the separator or the lower separator and the upper separator. The adhesive contains an adhesive composition comprising a copolymer and a rosin ester-based additive, the copolymer contains 60.1 to 79.9% by weight of two or more kinds of alkyl (meth)acrylate-based repeating units (A), and 20.1 to 39.9% by weight of (meth)acrylate-based repeating unit (B) having a hydroxyl group at its end.

Abstract: A unit cell includes an electrode positioned between a first separator and a separator in a stack. A first adhesive is positioned between the electrode and at least one of the first and second separators, and a second adhesive is positioned between the first separator and the second separator. A shear strength of the first adhesive is less than or equal to a shear strength of the second adhesive.

Abstract: A unit includes an electrode positioned between a first separator and a second separator in a stack. A first adhesive is positioned between the electrode and at least one of the first and second separators, and a second adhesive is positioned between the first separator and the second separator. The first adhesive composition has a degree of dispersion in an electrolyte that is larger than a degree of dispersion of the second adhesive composition in the electrolyte.

Abstract: In a device for evaluating torsional structural performance of girder according to an embodiment of the present disclosure, a guide unit of a support member formed in a shape of an arc having its center that matches a shear center of the girder rotatably supports a rotating member, so that the shear center of the girder matches a center of torsion during clockwise or counterclockwise rotation of the rotating member, thereby measuring an accurate angle of twist and preventing an incident in which the rotating member escapes due to separation of a component by a rotational force.

Abstract: Provided are an image sensor module, an image processing module, and an imaging device including the two modules. The image sensor module includes: a plurality of image sensors: a frame in which the image sensors are mounted to have different imaging angles; and at least one memory configured to store calibration information reflecting distance information generated from images obtained by the image sensors, respectively.

Abstract: Discussed is method for manufacturing a unit cell in which a certain number of separators and electrodes are alternately stacked, the method including: an adhesive applying operation of continuously providing a lower separator at a relatively lower position and an upper separator at a relatively upper position and applying an adhesive to a surface of at least one separator of the lower separator or the upper separator; an electrode inputting operation of inputting an electrode onto the lower separator; and a stacking operation of positioning and stacking the electrode between the lower separator and the upper separator. The adhesive applied on the at least one separator allows the electrode to be bonded to the at least one separator or allows the other separator to be bonded to the at least one separator, thereby preventing the electrode from moving relative to at least one of the upper and lower separators.

Abstract: A method for manufacturing a secondary battery includes: assembling an electrode assembly having a plurality of electrodes separated by at least one separator positioned between each of the electrodes; sealing the electrode assembly and an electrolyte solution in a battery case; and dissolving at least a portion of an adhesive into the electrolyte solution such that a mark from the adhesive is left on the separator. The step of assembling the electrode assembly includes adhering a first one of the plurality of electrodes to the at least one separator with the adhesive positioned between the first electrode and the separator. A secondary battery manufactured by such method is also provided.

Abstract: The present disclosure provides a rotation support member for supporting a rotation operation of a front panel and a rear panel in a container including the front panel and the rear panel rotatably coupled to a bottom plate, and third and fourth torsion bars serving as reference axes of rotation for the front panel and the rear panel, in which the rotation support member includes: a first rotation support member including one end fixedly coupled to a post coupling point (220) of the front panel which is spaced apart by a predetermined distance from a lower end of the front panel, and the other end positioned at a bottom plate coupling point (210) positioned on a side spaced apart by a predetermined distance from a front end of the bottom plate; and a first rotation support member including one end fixedly coupled to a post coupling point (220) of the rear panel which is spaced apart by a predetermined distance from the lower end of the rear panel, and the other end positioned at a bottom plate coupling point

Abstract: The present disclosure relates to a method for folding a container including a bottom plate, a top plate, and side wall panels provided between the bottom plate and the top plate, in which the side wall panels include a front panel, a rear panel, a first side panel, and a second side panel, and the method includes a first step of coupling forks of a forklift to coupling members provided on an upper surface of the top plate, a second step of, with the forklift, completely separating the top plate to above the side wall panel; a third step of rotating a first torsion bar provided at a lower end of the first side panel to fold the first side panel, a fourth step of rotating a second torsion bar provided at a lower end of the second side panel to fold the second side panel on top of the first side panel, a fifth step of rotating third and fourth torsion bars provided at lower ends of the front panel and the rear panel, respectively to rotate and fold the front panel and the rear panel, and a sixth step of, with t

Abstract: The present disclosure relates to a foldable container including a bottom plate, a top plate, and side wall panels provided between the bottom plate and the top plate, in which the side wall panels include a front panel, a rear panel, a first side panel, and a second side panel, and the container includes first and second torsion bars respectively provided at lower ends of the first and second side panels to generate torque when the first and second side panels are rotated, third and fourth torsion bars respectively provided at lower ends of the front panel and the rear panel to generate torque when the front panel and the rear panel are rotated, and a first rotation support member having an L-shape, including one end coupled to a post coupling point (220) spaced apart by a predetermined distance from the lower end of the front panel, and the other end coupled to a third torsion bar at a bottom plate coupling point (210) located on a side spaced apart by a predetermined distance from an end of the bottom plat

Abstract: The present disclosure relates to a structure for firmly coupling a corner of a top plate of a foldable container that can be folded by use of a torsion bar, in which the top plate is completely detachably coupled to the side wall panel. The foldable container according to the present disclosure includes posts P provided on both sides of the front panel and the rear panel in a vertical direction to bear a load of the container, torsion bars provided at lower ends of the side panel, the front panel, and the rear panel, and a corner locking structure that couples the top plate, the rear panel, and the side panel at an upper corner, such that the corners are firmly coupled while the container is in an unfolded state.

Abstract: The present disclosure relates to a foldable container including a torsion bar module, including: first hinges (310) provided at both outermost ends of the torsion bar module; a plurality of torsion bars arranged between the first hinges; and a second hinge (320) and a third hinge (330) inside the first hinges, with which both ends of the torsion bars are coupled and arranged.

Abstract: Provided is a bit error rate equalizing method of a memory device. The memory device selectively performs an error correction code (ECC) interleaving operation according to resistance distribution characteristics of memory cells, when writing a codeword including information data and a parity bit of the information data to a memory cell array. In the ECC interleaving operation according to one example, an ECC sector including information data is divided into a first ECC sub-sector and a second ECC sub-sector, the first ECC sub-sector is written to memory cells of a first memory area having a high bit error rate (BER), and the second ECC sub-sector is written to memory cells of a second memory area having a low BER.

Abstract: Provided is a bit error rate equalizing method of a memory device. The memory device selectively performs an error correction code (ECC) interleaving operation according to resistance distribution characteristics of memory cells, when writing a codeword including information data and a parity bit of the information data to a memory cell array. In the ECC interleaving operation according to one example, an ECC sector including information data is divided into a first ECC sub-sector and a second ECC sub-sector, the first ECC sub-sector is written to memory cells of a first memory area having a high bit error rate (BER), and the second ECC sub-sector is written to memory cells of a second memory area having a low BER.