Abstract: The present invention relates to an electrode assembly and a secondary battery comprising same, the electrode assembly comprising a cathode plate having a leading side formed to be slanted, so that stress exerted by distortion occurring at a center winding portion during charging and discharging of a secondary battery can be distributed, thus preventing the cathode plate from penetrating a separator at the distorted site causing a short with an anode plate.

Abstract: An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.

Abstract: An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.

Abstract: An embodiment of the present invention relates to a secondary battery, and with respect to a technical problem to be resolved, provided is a secondary battery which has an electrode tab provided by forming a notch on a non-coated part of an electrode plate of an electrode assembly, and which can enable a current collecting plate to come into surface contact with the electrode tab.

Abstract: An electrode assembly of a secondary battery has positive and negative electrode tabs aligned on a same line approximately at the center of the radius of the cross section of the electrode assembly, and are attached so as not to overlap each other in the longitudinal direction, thereby making it possible to improve winding roundness, and a positive electrode plate coating portion on a positive electrode plate, which is adjacent to the negative electrode tab, and which has no positive electrode tab formed thereon, thereby preventing precipitation of lithium during overcharging. The electrode assembly includes positive and negative electrode plates attached to the positive and negative electrodes tabs, respectively, and a separator interposed between the electrode plates, wherein the electrode plates and the separator are laminated and wound such that the positive and negative electrode tabs respectively protrude from the longitudinal upper and lower portions of the electrode assembly, respectively.

Abstract: Disclosed is a secondary battery, which has a reinforced strength and can simplify the manufacturing process thereof. For example, one embodiment provides a secondary battery which comprises: an electrode assembly including a first electrode plate and a second electrode plate, wherein one of the first electrode plate and the second electrode plate includes a plurality of first tabs formed to protrude in one direction; a first current collection tab coupled to the first tabs; a case housing the electrode assembly; and a cap assembly coupled to the upper part of the case, wherein the first current collection tab is coupled to one of the cap assembly and the bottom surface of the case.

Abstract: An embodiment of the present invention relates to a secondary battery, wherein a technical problem to be solved is to provide a secondary battery which has low resistance and can output high power without loss of capacity, and can prevent deformation or cracking of an electrode assembly. To this end, the present invention provides a secondary battery comprising: a cylindrical can; an electrode assembly which is received in the cylindrical can and includes multiple first tabs extending in a first direction which is a longitudinal direction of the cylindrical can, and multiple second tabs extending in a second direction opposite to the first direction; a cap assembly for sealing the cylindrical can; a first current collecting structure which electrically connects the multiple first tabs to the cap assembly while being insulated from the cylindrical can; and a second current collecting structure for electrically connecting the multiple second tabs to the cylindrical can.

Abstract: An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.