Abstract: Provided is an electrode for secondary battery. The electrode may include a substrate, a first coated portion disposed on a first surface of the substrate, the first coated portion comprising an active material; and a first uncoated portion disposed on the first surface of the substrate, the first uncoated portion being in contact with the first coated portion and exposing the substrate, wherein a first side portion of the first coated portion in contact with the first uncoated portion has a stepped surface.

Abstract: An apparatus for manufacturing an electrode plate for a secondary battery, the apparatus including a welding unit contacting an electrode plate, the electrode plate including a stack of a plurality of substrates, the welding unit being configured to weld the plurality of substrates in a thickness direction, resulting in a welded surface, a coating unit configured to apply an insulating material onto the welded surface of the electrode plate, resulting in a coated insulating material, a welded-surface imaging unit outside the electrode plate, the welded-surface imaging unit being configured to capture an image of the welded surface, and a control unit electrically connected to the coating unit and the welded-surface imaging unit, the control unit being configured to receive, from the welded-surface imaging unit, information about the welded surface and move the coating unit above the electrode plate.

Abstract: An electrode plate slitting apparatus includes a first cutting unit configured to cut a supplied electrode plate raw material into a plurality of split electrode plates, a second cutting unit configured to cut the plurality of split electrode plates, a sensor unit configured to detect the plurality of split electrode plates supplied to the second cutting unit, resulting in detected split electrode plates, and a control unit configured to receive information about the detected split electrode plates, and control driving of the second cutting unit.

Abstract: An apparatus for manufacturing an electrode plate includes a conveying unit configured to convey an electrode plate including a coated portion where an active material is applied to a current collector and a non-coated portion where no active material is applied in one direction, an elongating unit for the non-coated portion, the elongating unit including a pair of rollers having a predetermined gap therebetween, the elongating unit elongating the non-coated portion in close contact with respective sides of the non-coated portion, a first sensor in front of the elongating unit in a direction of conveyance measuring a first width of the non-coated portion prior to the elongating thereof, and a second sensor at a rear of the elongating unit measuring a second width of the non-coated portion after elongation, wherein the elongating unit compares the first width and the second width to adjust the gap between the pair of rollers.

Abstract: The present disclosure provides a deviation correction system and a method of correcting a deviation by using the same. A deviation correction apparatus may include a heater for heating an electrode plate of a secondary battery having an active material layer on a current collector, a spiral roller having a spiral protrusion, and a base roller facing and spaced apart from the spiral roller. The spiral roller and the base roller may be configured so that the electrode plate may be inserted between and may be moved between the spiral roller and the base roller.

Abstract: Embodiments of the present disclosure provide a coating apparatus. The coating apparatus includes a first material supply unit configured to coat a first mixture layer on a first surface of a substrate, the substrate having markers repeatedly formed along a machine direction, a first sensor configured to sense the first mixture layer and the markers, and a processor configured to determine a position of the first mixture layer based on the markers.

Abstract: The present disclosure relates to an apparatus and method for manufacturing an electrode plate, forming a vertical profile of a coated region, and is directed to providing an apparatus and method for manufacturing an electrode plate, which are capable of vertically forming an edge of a coated region in a process of manufacturing an electrode plate. The present disclosure provides an apparatus for manufacturing an electrode plate of a secondary battery, which includes a shield attachment unit that attaches a shield to predetermined portion of a substrate of the electrode plate of the secondary battery, a coating unit that coats an electrode material to the substrate with the shield attached to the substrate, a shield removal unit that removes the shield such that the substrate has an uncoated region and a coated region, and a rolling unit that rolls the substrate.

Abstract: An apparatus for forming an electrode plate tab pattern includes a conveying portion configured to convey, in a first direction, an electrode plate coated with an active material, a first pattern forming portion configured to form a first tab pattern on the electrode plate, and a second pattern forming portion configured to form a second tab pattern on the electrode plate. The first tab pattern and the second tab pattern are configured to be spaced apart from each other by a preset first distance.

Abstract: An active material coating method includes: forming first and second coating lines on a first surface of a base material; forming a first active material coating layer between the first and second coating lines on the first surface of the base material; forming third and fourth coating lines on a second surface of the base material; forming second active material coating layer between the third and fourth coating lines on the second surface of the base material; forming a first etched active material coating layer by etching a part of the first active material coating layer; determining a positional relationship between the first etched active material coating layer on the first surface and the second active material coating layer on the second surface; and forming a second etched active material coating layer by etching a part of the second active material coating layer based on the positional relationship.

Abstract: Provided is an electrode for secondary battery. The electrode may include a substrate, a first coated portion disposed on a first surface of the substrate, the first coated portion comprising an active material; and a first uncoated portion disposed on the first surface of the substrate, the first uncoated portion being in contact with the first coated portion and exposing the substrate, wherein a first side portion of the first coated portion in contact with the first uncoated portion has a stepped surface.

Abstract: A device for pressing an electrode plate of a rechargeable battery, the device including an uncoiler configured to supply a label from an inflow side of an electrode plate having a first coated portion and a second coated portion coated with an active material slurry and an uncoated portion between the first coated portion and the second coated portion, a label applicator configured to apply the label to the uncoated portion, a roll press configured to press the first coated portion and the second coated portion of the electrode plate in which the label is applied to the uncoated portion together with the label and a label separator configured to separate the pressed label from the uncoated portion of the pressed electrode plate.

Abstract: A web thickness measuring equipment and a method of measuring a web thickness. A web thickness measuring equipment includes: a roller that is rotatable and configured to wind a web; a detection unit that detects a light amount on an outer circumferential surface of the roller or an external surface of the web wound on the roller, and detects a magnetic field of an internal surface of the web opposite to the external surface; and a processor unit configured to obtain a thickness of the web by generating profile data of the outer circumferential surface of the roller, generating displacement amount data of a target external surface of the web, generating displacement amount data of a target internal surface of the web, and comparing the displacement amount data of the target external surface of the web with the displacement amount data of the target internal surface of the web.

Abstract: A label attaching device includes a substrate moving unit configured to move a substrate in a first direction, a labeler configured to attach a label to the substrate, and a first labeler moving unit coupled to the labeler, the first labeler moving unit being configured to move the labeler in the first direction.

Abstract: A web thickness measuring equipment and a method of measuring a web thickness. A web thickness measuring equipment includes: a roller that is rotatable and configured to wind a web; a detection unit that detects a light amount on an outer circumferential surface of the roller or an external surface of the web wound on the roller, and detects a magnetic field of an internal surface of the web opposite to the external surface; and a processor unit configured to obtain a thickness of the web by generating profile data of the outer circumferential surface of the roller, generating displacement amount data of a target external surface of the web, generating displacement amount data of a target internal surface of the web, and comparing the displacement amount data of the target external surface of the web with the displacement amount data of the target internal surface of the web.

Abstract: A label attaching device includes a substrate moving unit configured to move a substrate in a first direction, a labeler configured to attach a label to the substrate, and a first labeler moving unit coupled to the labeler, the first labeler moving unit being configured to move the labeler in the first direction.