Abstract: Disclosed is a binder composition for a negative electrode which includes a binder polymer containing at least one first functional group selected from the group consisting of a hydroxy group and a carboxyl group, and a crosslinked polymer containing at least one second functional group selected from the group consisting of an amino group and an isocyanate group, wherein the crosslinked polymer is present in an amount of 1.5 parts by weight to 8.5 parts by weight based on 100 parts by weight of the binder polymer.

Abstract: An article withdrawing system for withdrawing articles held in a packing box, the upper surface of which is opened. A first stage holds the packing box carried with the opened upper surface and reverses the packing box so that the articles held in the packing box falls down. A second stage supports and holds the falling-down articles. The first stage includes a support unit supporting and moving the packing box upward and downward, a box holding frame in which the support unit is mounted, a linear movement frame to which the box holding frame is rotatably coupled, a main frame in which the linear movement frame is coupled and supported to be linearly moved and is located and supported on the ground, and a first rotation driving mechanism disposed in the linear movement frame and for rotating and driving the box holding frame.

Abstract: A pouch for a secondary battery according to an embodiment of the present invention for solving the above problem includes: a surface protection layer made of a first polymer and formed at the outermost layer; a sealant layer made of a second polymer and formed at the innermost layer; a gas barrier layer made of a metal and stacked between the surface protection layer and the sealant layer; and a heat dissipation layer made of ceramic, stacked between the surface protection layer and the sealant layer, and configured to release heat to the outside of the pouch when a predetermined pressure is applied thereto.

Abstract: A system for taking out items wrapped in a packaging film and accommodated in a packaging box with an open top. The system includes a first conveyor configured to transfer a packaging box accommodating items therein, a fixing device for fixing, at a withdrawal position where the items are taken out of the packaging box, the packaging box transferred by the first conveyor with its top open, a withdrawal device for moving to a space in which the items are accommodated in the packaging box so as to suck the same using vacuum suction and take out the same, an item transfer device for transferring the items taken out by the withdrawal device with the items placed on the item transfer device, and a box transfer device for transferring an empty packaging box from which the items are taken out.

Abstract: The present disclosure provides a positive electrode for a secondary battery which includes a positive electrode active material and a lithium-based alloy. Also, the present disclosure provides a method of preparing the positive electrode for a secondary battery which includes the steps of forming a positive electrode material mixture layer including a positive electrode active material and forming a coating layer including a lithium-based alloy on the positive electrode material mixture layer, or forming a positive electrode material mixture layer by coating a positive electrode collector with a slurry for forming a positive electrode, which includes a positive electrode active material and a lithium-based alloy, and rolling the positive electrode collector.

Abstract: The present application provides a polyamic acid aqueous solution composition prepared of a polyimide, wherein the composition enables the polymerization of hydrophobic-based monomers into a polyamic acid in water and is improved in transparency, eco-friendliness, storage stability, and the like when cured.

Abstract: The present disclosure relates to a multi-layer electrode including a current collector; and a multi-layer electrode material layer comprising n active material layers (wherein, n?2) formed on at least one surface of the current collector, wherein each of the active material layers contains an electrode active material and a binder, the binders in the respective active material layers are different from each other, and the multi-layer electrode material layer has a uniform porosity from first active material layer closest to the current collector to nth active material layer furthest from the current collector. The present disclosure also relates to a lithium secondary battery including the same.

Abstract: An opening system including a cutting device for cutting an adhesive tape; a suctioning and lifting device for suctioning a upper panels, which are separated from each other because the adhesive tape is cut by the cutting device; rod members which are elongated to be inserted into gaps, when the gaps are formed between the upper panels and upper edges of side surfaces in the packaging box because the upper panels are spaced apart from the side panels by the suctioning and lifting device; and an opening device which moves the respective rod members while being in contact with lower surfaces of the upper panels such that the upper panels are rotated outward with respect to boundaries between the upper panels and the side panels.

Abstract: A system for removing a product-packing film from a product having an axis in a longitudinal direction. The packing film surrounds lateral portions of the product. A first end of the packing film surrounding a first longitudinal end of the product is open. A second end of the packing film surrounding a second end of the product opposite the first end of the product is closed. In the system, a conveyor carries a plurality of products each packed with a packing film in a direction perpendicular to the axes of the products while supporting the products such that the axes of the products are parallel to each other. A suction unit draws the first end of the packing film in an axial direction of each of the products. A clamping unit clamps the first end of the packing film drawn by the suction unit.

Abstract: A reversing system for reversing a packing box, an upper surface of which is opened, and from which products are withdrawn, such that a lower surface of the reversed empty packing box is disposed above. A first conveyor transfers an empty packing box, an upper surface of which is opened, from a position at which products are withdrawn from the packing box to a position at which the packing box is reversed. A turning device holds the packing box to be turned about a horizontal rotation axis, and reverses the packing box. A second conveyor carries the reversed packing box to a position at which the bottom surface is opened. The turning device holds two sides, facing each other, among sides of the packing box, and turns and reverses the packing box using a portion between the holding locations of the two held sides as a rotation axis.

Abstract: A system for aligning items, which includes a packaging box transfer device to transfer a packaging box accommodating items therein, a fixing device to fix, at a withdrawal position where the items are taken out of the packaging box, the packaging box transferred by the packaging box transfer device with its top open, a withdrawal device to move to a space in which the items are accommodated in the packaging box so as to suck and take out the items, an item transfer device to transfer the items taken out by the withdrawal device with the items placed on the item transfer device, a sensor mounted on the withdrawal device to detect directions of the items taken out by the withdrawal device, and a rotating device to rotate the items taken out by the withdrawal device with the items placed on the rotating device.

Abstract: A packing box folding system, and the packing box folding system including a transfer conveyor on which transfers the packing box from a packing box introducing position to a folded packing box discharging position; a fixed guide panel which extends between the packing box introducing position and the packing box discharging position and is disposed on one side of the transfer conveyor in the width-direction; and a movable suction device which is disposed on the side opposite to the fixed guide panel in the width-direction of the transfer conveyor and is movable between the packing box introducing position and the packing box discharging position, wherein the movable suction device suctions the side surface of the packing box, which faces the side surface in contact with the fixed guide panel, and presses the suctioned side surface inward in the width-direction.

Abstract: A secondary battery includes an electrode assembly having positive electrodes, of which positive electrode tabs are connected to each other, and negative electrodes, of which negative electrode tabs are connected to each other, the electrode assembly having a quadrangular shape, a space part that is an empty space is defined between two sides facing each other, and the positive electrode tabs and the negative electrode tabs are positioned within the space part, a positive electrode lead having one end connected to the positive electrode tabs, a negative electrode lead having one end connected to the negative electrode tabs, and a pouch in which the electrode assembly is embedded is provided. The other end of the positive electrode lead and the other end of the negative electrode lead pass through the pouch to protrude from one of the largest surfaces of the pouch to the outside.

Abstract: A battery module improves performance of secondary batteries through effective thermal control. The battery module includes at least one secondary battery, a module case having an empty space formed therein to accommodate the at least one secondary battery in the inner space and at least one heat pressure exchange member disposed to face the secondary battery in the inner space of the module case. The at least one heat pressure exchange member is configured to absorb and retain heat when a pressure applied from the secondary battery is equal to or less than a reference value and release the retained heat when the pressure applied from the secondary battery is higher than the reference value.

Abstract: Disclosed is a negative electrode including: a current collector; a negative electrode active material layer disposed on at least one surface of the current collector, including a silicon-based active material and a conductive material, and containing no binder polymer; and a coating layer disposed on the surface of the negative electrode active material layer and in at least a part of the inside of the pores of the negative electrode active material layer, and containing a coating layer polymer forming a chemical bond with silicon (Si) of the silicon-based active material, wherein the content of the coating layer polymer is 0.3-2 parts by weight based on 100 parts by weight of the negative electrode active material layer, and the coating layer polymer is a mixture of polyacrylic acid with polyvinyl alcohol.

Abstract: The present technology relates to a method for manufacturing an electrode plate for a secondary battery, and the method is a method for manufacturing an electrode plate by performing a pattern-coating to have a coated part, on which an electrode slurry has been coated, and a non-coated part, on which the electrode slurry has not been coated, on an electrode current collector sheet, including: attaching at least one adhesive film on at least one portion of the non-coated part on the electrode current collector sheet; consecutively coating an electrode slurry on the electrode current collector sheet including the adhesive-film-attached portion; heating and drying the electrode slurry; and peeling the adhesive film from the electrode current collector sheet and retrieving the adhesive film.

Abstract: The present invention relates to a positive electrode active material and a lithium secondary battery comprising the same, and more specifically, to a positive electrode active material including a lithium composite oxide containing at least nickel and titanium, wherein the titanium is present in an oxide form in at least a portion of the surface of the lithium composite oxide at the same time as being doped in the lithium composite oxide, and thus it is possible to simultaneously improve the output efficiency and high-temperature lifetime characteristics (high-temperature cycle capacity retention rate) of a lithium secondary battery using the positive electrode active material, and a lithium secondary battery including the same.

Abstract: A system for taking out items wrapped in a packaging film and accommodated in a packaging box with an open top. The system includes a first conveyor configured to transfer a packaging box accommodating items therein, a fixing device for fixing, at a withdrawal position where the items are taken out of the packaging box, the packaging box transferred by the first conveyor with its top open, a withdrawal device for moving to a space in which the items are accommodated in the packaging box so as to suck the same using vacuum suction and take out the same, an item transfer device for transferring the items taken out by the withdrawal device with the items placed on the item transfer device, and a box transfer device for transferring an empty packaging box from which the items are taken out.

Abstract: A packing box folding system, and the packing box folding system including a transfer conveyor on which transfers the packing box from a packing box introducing position to a folded packing box discharging position; a fixed guide panel which extends between the packing box introducing position and the packing box discharging position and is disposed on one side of the transfer conveyor in the width-direction; and a movable suction device which is disposed on the side opposite to the fixed guide panel in the width-direction of the transfer conveyor and is movable between the packing box introducing position and the packing box discharging position, wherein the movable suction device suctions the side surface of the packing box, which faces the side surface in contact with the fixed guide panel, and presses the suctioned side surface inward in the width-direction.

Abstract: A system for aligning items, which includes a packaging box transfer device to transfer a packaging box accommodating items therein, a fixing device to fix, at a withdrawal position where the items are taken out of the packaging box, the packaging box transferred by the packaging box transfer device with its top open, a withdrawal device to move to a space in which the items are accommodated in the packaging box so as to suck and take out the items, an item transfer device to transfer the items taken out by the withdrawal device with the items placed on the item transfer device, a sensor mounted on the withdrawal device to detect directions of the items taken out by the withdrawal device, and a rotating device to rotate the items taken out by the withdrawal device with the items placed on the rotating device.