Abstract: A curved secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates, a can accommodating the electrode assembly, the can being curved and portions of the can having different thicknesses in a bending direction of the can, the can having an opening in a side thereof that provide a passage for the electrode assembly, and a cap plate sealing the opening of the can.

Abstract: A secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator provided between the first and second electrode plates, wrapping tape including a first surface and a second surface opposite to the first surface, the wrapping tape surrounding the electrode assembly, and having adhesive layers coated only on parts of the first surface, a can including an opening at a side thereof to insert the electrode assembly therethrough, the can accommodating the electrode assembly therein, and a cap assembly configured to close the opening of the can.

Abstract: A secondary battery including: an electrode assembly; a case accommodating the electrode assembly; a cap assembly including a cap plate coupled to the case, and a bottom plate attached to a bottom surface of the cap plate; and an electrode terminal protruding from the cap assembly and electrically connected to the electrode assembly, and the bottom plate includes a terminal plate electrically connected to the electrode terminal, and an insulation film stacked on the terminal plate and electrically insulating the terminal plate and the cap plate from each other, the insulation film being integrally formed with the terminal plate.

Abstract: A method of manufacturing a secondary battery including an electrode assembly, a case configured to accommodate the electrode assembly, and an electrode terminal exposed from the case, wherein the method includes: welding a first electrode tab to a terminal plate by a first ultrasonic welding process, the first electrode tab extending from the electrode assembly, the terminal plate being electrically connected to the electrode terminal and accommodated in the case, and the first ultrasonic welding process including: arranging a pair of first fixing blocks on opposite sides of the terminal plate; pressing a horn against overlapping portions of the terminal plate and the first electrode tab exposed between the pair of first fixing blocks; and applying first ultrasonic vibrations from the horn.

Abstract: A secondary battery comprising an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, a protection film coupled to one end of the electrode assembly, a can accommodating the electrode assembly, and a cap plate coupled to the can, wherein the separator protrudes more toward the protection film than the first electrode plate and the second electrode plate at the one end of the electrode assembly, and wherein the protection film is thermally bonded to an end portion of the separator.

Abstract: Provided is a secondary battery, which can improve a coupling force between a case and a cap plate and can improve stability of the secondary battery, by forming a coupling protrusion on a side surface of the cap plate and forming a coupling groove corresponding to the coupling protrusion on an inner surface of the case. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, and a cap plate coupled to an opening of the case. A coupling protrusion protruding toward an inner surface of the case is formed on a side surface of the cap plate, and a coupling groove corresponding to the coupling protrusion is formed on the inner surface of the case.

Abstract: Provided is a secondary battery, which can prevent a protective circuit board and an electrode terminal from colliding with each other by providing a gasket including a support unit protruding from a top surface of a cap plate to be higher than the electrode terminal. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, an electrode terminal electrically connected to the electrode assembly and upwardly protruding through a terminal throughhole of the cap plate, and a gasket interposed between the cap plate and the electrode terminal and electrically insulating the cap plate and the electrode terminal from each other. The gasket includes a support unit protruding from the cap plate to be higher than the electrode terminal.

Abstract: A secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator provided between the first and second electrode plates, wrapping tape including a first surface and a second surface opposite to the first surface, the wrapping tape surrounding the electrode assembly, and having adhesive layers coated only on parts of the first surface, a can including an opening at a side thereof to insert the electrode assembly therethrough, the can accommodating the electrode assembly therein, and a cap assembly configured to close the opening of the can.

Abstract: A secondary battery, which can improve safety during a longitudinal compression test by reinforcing strength of a cap plate, is provided. In one embodiment, the secondary battery includes an electrode assembly, a can accommodating the electrode assembly, and cap plate coupled to a top portion of the can and sealing the can, wherein a reinforcement unit is formed on at least one side of the cap plate.

Abstract: A method of manufacturing a secondary battery including an electrode assembly, a case configured to accommodate the electrode assembly, and an electrode terminal exposed from the case, wherein the method includes: welding a first electrode tab to a terminal plate by a first ultrasonic welding process, the first electrode tab extending from the electrode assembly, the terminal plate being electrically connected to the electrode terminal and accommodated in the case, and the first ultrasonic welding process including: arranging a pair of first fixing blocks on opposite sides of the terminal plate; pressing a horn against overlapping portions of the terminal plate and the first electrode tab exposed between the pair of first fixing blocks; and applying first ultrasonic vibrations from the horn.

Abstract: A secondary battery including an electrode assembly and a case accommodating the electrode assembly, the case including a bottom surface, a first pair of parallel sidewalls and a second pair of parallel sidewalls, connected with the bottom surface, and a corner portion formed by an intersection of each of the first pair of parallel sidewalls and the bottom surface, the corner portion having a first radius of curvature at a first region, and a second radius of curvature different from the first radius of curvature at a second region.

Abstract: Provided is a secondary battery, which can prevent a protective circuit board and an electrode terminal from colliding with each other by providing a gasket including a support unit protruding from a top surface of a cap plate to be higher than the electrode terminal. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to an opening of the case, an electrode terminal electrically connected to the electrode assembly and upwardly protruding through a terminal throughhole of the cap plate, and a gasket interposed between the cap plate and the electrode terminal and electrically insulating the cap plate and the electrode terminal from each other. The gasket includes a support unit protruding from the cap plate to be higher than the electrode terminal.

Abstract: Provided is a secondary battery, which can improve a coupling force between a case and a cap plate and can improve stability of the secondary battery, by forming a coupling protrusion on a side surface of the cap plate and forming a coupling groove corresponding to the coupling protrusion on an inner surface of the case. The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, and a cap plate coupled to an opening of the case. A coupling protrusion protruding toward an inner surface of the case is formed on a side surface of the cap plate, and a coupling groove corresponding to the coupling protrusion is formed on the inner surface of the case.

Abstract: A curved secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator between the first and second electrode plates, a can accommodating the electrode assembly, the can being curved and portions of the can having different thicknesses in a bending direction of the can, the can having an opening in a side thereof that provide a passage for the electrode assembly, and a cap plate sealing the opening of the can.

Abstract: A secondary battery comprising an electrode assembly comprising a first electrode plate, a second electrode plate, and a separator between the first electrode plate and the second electrode plate, a protection film coupled to one end of the electrode assembly, a can accommodating the electrode assembly, and a cap plate coupled to the can, wherein the separator protrudes more toward the protection film than the first electrode plate and the second electrode plate at the one end of the electrode assembly, and wherein the protection film is thermally bonded to an end portion of the separator.

Abstract: A secondary battery, which can improve safety during a longitudinal compression test by reinforcing strength of a cap plate, is provided. In one embodiment, the secondary battery includes an electrode assembly, a can accommodating the electrode assembly, and cap plate coupled to a top portion of the can and sealing the can, wherein a reinforcement unit is formed on at least one side of the cap plate.

Abstract: A secondary battery including: an electrode assembly; a case accommodating the electrode assembly; a cap assembly including a cap plate coupled to the case, and a bottom plate attached to a bottom surface of the cap plate; and an electrode terminal protruding from the cap assembly and electrically connected to the electrode assembly, and the bottom plate includes a terminal plate electrically connected to the electrode terminal, and an insulation film stacked on the terminal plate and electrically insulating the terminal plate and the cap plate from each other, the insulation film being integrally formed with the terminal plate.

Abstract: A secondary battery including an electrode assembly and a case accommodating the electrode assembly, the case including a bottom surface, a first pair of parallel sidewalls and a second pair of parallel sidewalls, connected with the bottom surface, and a corner portion formed by an intersection of each of the first pair of parallel sidewalls and the bottom surface, the corner portion having a first radius of curvature at a first region, and a second radius of curvature different from the first radius of curvature at a second region.

Abstract: A battery tray for storing a battery comprises: a battery storage unit comprising: a first side and a second side facing each other, and a third side and a fourth side facing each other, wherein the third and fourth sides have planar portions for accommodating a prismatic battery cell and round portions for accommodating a cylindrical battery cell; a first guiding unit extending from a lower portion of the third side to secure a first end of a prismatic battery cell; and a second guiding unit extending from a lower portion of the fourth side to secure a second end of a prismatic battery cell.

Abstract: A secondary battery includes an electrode assembly including: a winding having a positive electrode plate, a negative electrodes plate, and stacked together with a separator interposed between the positive and negative electrode plate; a can having an opening portion to receive the electrode assembly; a cap assembly including a cap plate to close the opening portion of the can, the cap plate having an electrolyte injection hole arranged therein; and a first extension groove having a greater diameter than that of the electrolyte injection hole, the first extension groove being arranged in an entering portion of the electrolyte injection hole and having at least one hollow portion arranged on the surface of the first extension groove.