Abstract: A welding device welds an electrode tab protruding from an electrode assembly of a button-type battery to a can of the button-type battery. The welding device includes a base to support a bottom surface of the can when an inner surface of the can faces an upper side, and the electrode tab is in contact with the inner surface of the can; a jig on the base to fix the electrode tab on the base and having an opening hole through which a laser light for welding the electrode tab to the can passes; a laser irradiation device to irradiate the laser light to the opening hole when the jig fixes the electrode tab to the can; and four probes on the base or the jig. Two probes of the probes are connected to a power source, and the remaining two probes are connected to a voltmeter.

Abstract: A welding apparatus is provided for a secondary battery having an electrode assembly with a center hole seated on a lower can. The welding apparatus includes a jig which includes an insertion portion that has a pipe shape and a diameter enabling entry into the center hole of the electrode assembly and a seating portion that has an enlarged diameter of a disk shape on an end of the insertion portion; and a laser irradiation apparatus to emit a laser beam into a hole of the insertion portion. When the electrode assembly is seated on the lower can such that an electrode tab of the electrode assembly is placed within the center hole, the laser irradiation apparatus performs a weld between the inner bottom surface of the lower can and the electrode tab after passing through the hole of the insertion portion of the jig.

Abstract: A method for manufacturing a secondary battery includes preparing a lower can having an accommodation part to accommodate an electrode assembly, and an upper cover covering an upper opening of the lower can; gripping an end of a lower can circumferential portion and an end of an upper cover circumferential portion at upper and lower portions using upper and lower jigs to weld the lower can circumferential portion extending outward from an edge of the accommodation part to the upper cover circumferential portion that is a circumferential area of the upper cover; and irradiating a laser onto a bonding portion at which the lower can circumferential portion and the upper cover circumferential portion are welded to each other. In the irradiating, a height of the accommodation part is higher than a height of the end of the lower can circumferential portion.

Abstract: A laser cutting apparatus includes a lower jig configured to support a lower portion of a first side of a cutting region of an object to be cut by a laser beam, an upper jig configured to support an upper portion of the first side of the cutting region of the object, a laser nozzle configured to emit the laser beam towards the cutting region of the object, and a spatter block jig locatable between a body part of the object and the cutting region of the object.

Abstract: A button-type secondary battery includes an electrode assembly in which electrodes and separators are alternately layered; a can case having an internal accommodation space in which the electrode assembly is accommodated; and an electrode tab having one side connected to each of the electrodes of the electrode assembly and the other side welded to the can case. A welding pattern appearing at a welding part, at which the electrode tab is welded to the can case, includes a circular shape and an additional shape in addition to the circular shape.

Abstract: A joining material for laser welding, a laser welding method using the same, and a laser joined body using the laser welding method. The joining material includes a polymer matrix and a needle-shaped inorganic filler. The polymer matrix includes a polypropylene resin having a melt index of 80 g/10 min or more to 95 g/10 min or less as measured at a temperature of 230° C. and a load of 2.16 kg, and the needle-shaped inorganic filler has an aspect ratio of 10:1 to 20:1.

Abstract: A joining material for laser welding, a laser welding method using the same, and a laser joined body using the laser welding method. The joining material includes a polymer matrix and a needle-shaped inorganic filler. The polymer matrix includes a polypropylene resin having a melt index of 80 g/10 min or more to 95 g/10 min or less as measured at a temperature of 230° C. and a load of 2.16 kg, and the needle-shaped organic filler has an aspect ratio of 10:1 to 20:1.

Abstract: The present invention relates to a method of manufacturing a heterogeneous material joined body.

Abstract: The present specification relates to an electrolyte of a solid oxide fuel cell, a solid oxide fuel cell including the same, a composition for the electrolyte, and a method for preparing the electrolyte.

Abstract: The present specification relates to a solid oxide fuel cell including an anode, a cathode, and an electrolyte layer provided between the anode and the cathode and a method for fabricating the solid oxide fuel cell.

Abstract: The present specification relates to an electrode slurry of a solid oxide fuel cell, a green sheet for an electrode of a solid oxide fuel cell, an electrode of a solid oxide fuel cell, a solid oxide fuel cell, and a method for manufacturing an electrode of a solid oxide fuel cell.

Abstract: The present application relates to a method of manufacturing an anode supporter of a solid oxide fuel cell and an anode supporter of a solid oxide fuel cell, and may improve performance and durability of the fuel cell by improving an interfacial property between the anode supporter and an electrolyte.

Abstract: The present specification relates to a solid oxide fuel cell and a cell module including the same.

Abstract: The present application relates to a method of manufacturing an anode support of a solid oxide fuel cell and an anode support of a solid oxide fuel cell, and may improve performance and durability of the fuel cell by improving an interfacial property between the anode support and an electrolyte.

Abstract: According to the present disclosure, a pattern comprising protrusions and grooves is formed on all layers in a laminate laminating a composition layer for preparing an electrolyte; and at least one of a composition layer for preparing a fuel electrode and a composition layer for preparing an air electrode on the composition layer for preparing an electrolyte, which leads to advantages of saving time and costs in terms of process by carrying out sintering and pattern forming at once, while improving cell efficiency by increasing a surface area of the electrolyte layer.

Abstract: The present specification relates to a solid oxide fuel cell including an anode, a cathode, and an electrolyte layer provided between the anode and the cathode and a method for fabricating the solid oxide fuel cell.

Abstract: The present specification relates to an electrolyte of a solid oxide fuel cell, a solid oxide fuel cell including the same, a composition for the electrolyte, and a method for preparing the electrolyte.

Abstract: The present specification relates to a solid oxide fuel cell and a cell module including the same.

Abstract: The present specification relates to an electrode slurry of a solid oxide fuel cell, a green sheet for an electrode of a solid oxide fuel cell, an electrode of a solid oxide fuel cell, a solid oxide fuel cell, and a method for manufacturing an electrode of a solid oxide fuel cell.

Abstract: According to the present disclosure, a pattern comprising protrusions and grooves is formed on all layers in a laminate laminating a composition layer for preparing an electrolyte; and at least one of a composition layer for preparing a fuel electrode and a composition layer for preparing an air electrode on the composition layer for preparing an electrolyte, which leads to advantages of saving time and costs in terms of process by carrying out sintering and pattern forming at once, while improving cell efficiency by increasing a surface area of the electrolyte layer.