Abstract: A secondary battery has increased space utilization efficiency and can increase a capacity of an electrode assembly within a given dimension. In an exemplary embodiment, a secondary battery includes: an electrode assembly including an electrode uncoated portion; a case receiving the electrode assembly; a cap plate coupled to a top portion of the case and sealing the case; and a current collector including a terminal connector positioned between the electrode assembly and the cap plate, and an electrode connector bent at an end of the terminal connector and positioned between the electrode assembly and the case, and the electrode connector includes a first region connected to the terminal connector and protruding toward the case, and a second region positioned under the first region and protruding toward the electrode assembly.

Abstract: Various embodiments of the present invention relate to a secondary battery, and the technical problem to be solved is to provide a secondary battery having a cathode terminal-integrated cap plate, which prevents the occurrence of weld defects during welding of a bus bar. To this end, the present disclosure provides a secondary battery comprising: a case; an electrode assembly received in the case; and a cap plate coupled to the case so as to protect the electrode assembly, wherein the cap plate includes a terminal part to which the electrode assembly is electrically connected and which is formed integrally with the cap plate, and the terminal part is thicker than the cap plate.

Abstract: A secondary battery includes: an electrode assembly including first electrode plates and second electrode plates alternately stacked with a separator therebetween, and first electrode tabs overlapping one another at a same position and outwardly protruding, the first electrode tabs being uncoated portions of the first electrode plates, and a fixing tape adhered between the separator positioned at each of opposite long side surfaces and outer surfaces of the first electrode tabs; a first collector portion welded to the first electrode tabs of the electrode assembly; and a case accommodating the electrode assembly and the first collector portion.

Abstract: Provided is a secondary battery, which can reduce defects of an uncoated portion of a current collector while ensuring a larger capacity and improving welding quality of the current collector. In one embodiment, the secondary battery includes a series of electrode assemblies each including a first electrode tab and a second electrode tab, a case accommodating the electrode assemblies, a cap plate coupled to the case at an opening in the case, a first current collector electrically connected to the first electrode tabs of the electrode assemblies, a second current collector electrically connected to the second electrode tabs of the electrode assemblies, and a first series of sub-tabs. A first sub-tab is coupled to the first electrode tab of a first electrode assembly, and a second sub-tab is coupled to the first electrode tab of a second electrode assembly. The first sub-tab is bent along a first boundary and the second sub-tab is bent along a second boundary.

Abstract: A rechargeable battery includes: an electrode assembly including an electrode including an uncoated region; a case configured to accommodate the electrode assembly and including an opening; a cap assembly including an electrode terminal and configured to be coupled to the opening to seal the case; and a current collecting plate configured to be coupled to the uncoated region of the electrode assembly, and the current collecting plate includes: a first flat plate portion including a welded portion welded to the uncoated region, a second flat plate portion including a fuse portion and electrically connected to the electrode terminal, and a vibration absorbing portion connected to the first and second flat plate portions of which opposite end portions face each other in a longitudinal direction, the vibration absorbing portion having a thickness that is thinner than thicknesses of the first and second flat plate portions.

Abstract: Various embodiments of the present invention relate to a secondary battery, and the technical problem to be solved is to provide a secondary battery having a cathode terminal-integrated cap plate, which prevents the occurrence of weld defects during welding of a bus bar. To this end, the present disclosure provides a secondary battery comprising: a case; an electrode assembly received in the case; and a cap plate coupled to the case so as to protect the electrode assembly, wherein the cap plate includes a terminal part to which the electrode assembly is electrically connected and which is formed integrally with the cap plate, and the terminal part is thicker than the cap plate.

Abstract: A secondary battery includes a retainer and/or an insulation plate having bilateral symmetry, thereby improving work efficiency and productivity. In one or more exemplary embodiments, the secondary battery includes: an electrode assembly; a case receiving the electrode assembly; a cap plate coupled to a top portion of the case and sealing the case; a current collector including a terminal connector positioned between the electrode assembly and the cap plate, and an electrode connector bent from an end of the terminal connector, positioned between the electrode assembly and the case, and having a coupling hole formed therein; an insulation plate positioned on the electrode assembly and coupled to the terminal connector; and a retainer coupled to the electrode connector and including a fixing hook engaged with the coupling hole.

Abstract: A secondary battery includes: an electrode assembly including first electrode plates and second electrode plates alternately stacked with a separator therebetween, and first electrode tabs overlapping one another at a same position and outwardly protruding, the first electrode tabs being uncoated portions of the first electrode plates, and a fixing tape adhered between the separator positioned at each of opposite long side surfaces and outer surfaces of the first electrode tabs; a first collector portion welded to the first electrode tabs of the electrode assembly; and a case accommodating the electrode assembly and the first collector portion.

Abstract: A secondary battery includes: an electrode assembly including an uncoated portion tab, a current collector member connected to the uncoated portion tab and bent with the uncoated portion tab, and a tape member covering connected and bent regions of the uncoated portion tab and the current collector member.

Abstract: A secondary battery capable of achieving a higher capacity than a related art jelly-rolled electrode assembly is provided, the secondary battery including an electrode assembly including a first electrode plate and a second electrode plate, each having an uncoated portion protruding from a respective one of laterally opposite sides of the electrode assembly; a current collector at a region corresponding to the uncoated portion of the electrode assembly; and a ductile sub-tab electrically connecting the uncoated portion of the electrode assembly to the current collector, wherein the uncoated portion and the sub-tab are connected to each other and bent together in the same direction.

Abstract: Embodiments of the present invention are directed toward a rechargeable battery including: an electrode assembly including a first electrode and a second electrode, each of which includes an electrode plate and an electrode uncoated region; a case for accommodating the electrode assembly and having an opening; a cap assembly coupled to the opening to seal the case; and a current collecting member between the cap assembly and the electrode assembly and respectively coupled to an electrode uncoated region of the first electrode and an electrode uncoated region of the second electrode. The current collecting member includes a first current collector that faces one side of the cap assembly, a second current collector that contacts the electrode uncoated region, and a connecting portion that is shifted toward one side of the first current collector and connects the first and second current collectors.

Abstract: A rechargeable battery according to an exemplary embodiment of the present invention includes: an electrode assembly including electrodes at opposite sides of a separator, each of the electrodes having a coated region and an uncoated region, and the electrodes and the separator being spirally wound; an insulating case for accommodating the electrode assembly and allowing the uncoated regions to be drawn out through respective uncoated region holes; a case for accommodating the insulating case; and a cap plate coupled to an opening of the case and allowing electrode terminals respectively coupled to the uncoated regions to be drawn out through respective terminal holes.

Abstract: A rechargeable battery includes: an electrode assembly including an electrode including an uncoated region; a case configured to accommodate the electrode assembly and including an opening; a cap assembly including an electrode terminal and configured to be coupled to the opening to seal the case; and a current collecting plate configured to be coupled to the uncoated region of the electrode assembly, and the current collecting plate includes: a first flat plate portion including a welded portion welded to the uncoated region, a second flat plate portion including a fuse portion and electrically connected to the electrode terminal, and a vibration absorbing portion connected to the first and second flat plate portions of which opposite end portions face each other in a longitudinal direction, the vibration absorbing portion having a thickness that is thinner than thicknesses of the first and second flat plate portions.

Abstract: A rechargeable battery including: an electrode assembly; a case containing the electrode assembly; a cap plate covering an opening of the case; a terminal extending outside the cap plate; a lead tab connecting the electrode assembly to the terminal; and a retainer coupled to the lead tab inside the case and arranged between the lead tab and the case, the retainer including an insertion guide facing away from the electrode assembly and being inclined toward the electrode assembly in a direction extending away from the cap plate.

Abstract: A secondary battery has increased space utilization efficiency and can increase a capacity of an electrode assembly within a given dimension. In an exemplary embodiment, a secondary battery includes: an electrode assembly including an electrode uncoated portion; a case receiving the electrode assembly; a cap plate coupled to a top portion of the case and sealing the case; and a current collector including a terminal connector positioned between the electrode assembly and the cap plate, and an electrode connector bent at an end of the terminal connector and positioned between the electrode assembly and the case, and the electrode connector includes a first region connected to the terminal connector and protruding toward the case, and a second region positioned under the first region and protruding toward the electrode assembly.

Abstract: A secondary battery capable of achieving a higher capacity than a related art jelly-rolled electrode assembly is provided, the secondary battery including an electrode assembly including a first electrode plate and a second electrode plate, each having an uncoated portion protruding from a respective one of laterally opposite sides of the electrode assembly; a current collector at a region corresponding to the uncoated portion of the electrode assembly; and a ductile sub-tab electrically connecting the uncoated portion of the electrode assembly to the current collector, wherein the uncoated portion and the sub-tab are connected to each other and bent together in the same direction.

Abstract: A secondary battery includes a retainer and/or an insulation plate having bilateral symmetry, thereby improving work efficiency and productivity. In one or more exemplary embodiments, the secondary battery includes: an electrode assembly; a case receiving the electrode assembly; a cap plate coupled to a top portion of the case and sealing the case; a current collector including a terminal connector positioned between the electrode assembly and the cap plate, and an electrode connector bent from an end of the terminal connector, positioned between the electrode assembly and the case, and having a coupling hole formed therein; an insulation plate positioned on the electrode assembly and coupled to the terminal connector; and a retainer coupled to the electrode connector and including a fixing hook engaged with the coupling hole.

Abstract: Provided is a secondary battery, which can reduce defects of an uncoated portion of a current collector while ensuring a larger capacity and improving welding quality of the current collector. In one embodiment, the secondary battery includes a series of electrode assemblies each including a first electrode tab and a second electrode tab, a case accommodating the electrode assemblies, a cap plate coupled to the case at an opening in the case, a first current collector electrically connected to the first electrode tabs of the electrode assemblies, a second current collector electrically connected to the second electrode tabs of the electrode assemblies, and a first series of sub-tabs. A first sub-tab is coupled to the first electrode tab of a first electrode assembly, and a second sub-tab is coupled to the first electrode tab of a second electrode assembly. The first sub-tab is bent along a first boundary and the second sub-tab is bent along a second boundary.

Abstract: A rechargeable battery includes: a first electrode assembly and a second electrode assembly, each of the first and second electrode assemblies including a first electrode and a second electrode, each of the first and second electrodes including an electrode plate and an electrode uncoated region; a case accommodating the first and second electrode assemblies; a cap assembly sealing the case; a first current collecting member electrically connecting the first electrode of the first electrode assembly and the first electrode of the second electrode assembly; and a second current collecting member electrically connecting the second electrode of the first electrode assembly and the second electrode of the second electrode assembly. Each of the first and second current collecting members includes a first current collecting plate coupled with a connecting terminal, and a second current collecting plate, one surface of the second current collecting plate contacting at least one of the electrode uncoated regions.

Abstract: A rechargeable battery includes an electrode assembly comprising electrodes having coated and uncoated regions, being located on opposite sides of a separator and spirally wound together with the separator; a case accommodating the electrode assembly; an insulating plate on the electrode assembly and having a protruding portion and internal terminal holes; and a cap plate sealing the case and having terminal holes, wherein each of the electrode terminals passes through a respective one of the internal terminal holes to protrude from that terminal hole.