Abstract: A rechargeable battery includes: an electrode assembly formed by winding a positive and negative electrode plate and a separator between the electrode plates, and including a cavity along an axial direction of the electrode assembly; a center pin along the axial direction and housed in the cavity; a can having an opening; and a cap assembly configured to close the opening, wherein the center pin includes: a center portion along a radial direction of the center pin; a first perimeter portion coupled to a first end portion of the center portion and extending from the first end portion toward a second end portion of the center portion; and a second perimeter portion coupled to the first end portion of the center portion and extending from the first end portion toward the second end portion in a circumferential direction opposite to a circumferential direction of the first perimeter portion.

Abstract: A rechargeable battery includes: an electrode assembly formed by winding a positive and negative electrode plate and a separator between the electrode plates, and including a cavity along an axial direction of the electrode assembly; a center pin along the axial direction and housed in the cavity; a can having an opening; and a cap assembly configured to close the opening, wherein the center pin includes: a center portion along a radial direction of the center pin; a first perimeter portion coupled to a first end portion of the center portion and extending from the first end portion toward a second end portion of the center portion; and a second perimeter portion coupled to the first end portion of the center portion and extending from the first end portion toward the second end portion in a circumferential direction opposite to a circumferential direction of the first perimeter portion.

Abstract: A secondary battery that includes a cylindrical can, an electrode assembly arranged in a jelly-role configuration within the cylindrical can and having a core extending about an axis thereof and a hollow center pin arranged within the core of the electrode assembly and having an inner diameter and an outer diameter, the outer diameter forming ones of a pair of radial lengths diametrically opposite from each other, each of said pair of radial lengths extending from the outer diameter of the center pin to an external surface of the core, wherein the sum of the pair of radial lengths is in the range of 5% to 54% of the inner diameter of the center pin.

Abstract: A rechargeable battery is disclosed. In one embodiment, the battery includes i) a current collecting plate, ii) a plurality of electrode assemblies electrically connected in parallel with each other via the current collecting plate, wherein each of the electrode assemblies comprises two opposing ends and an outer side formed between the two ends, and wherein the current collecting plate is electrically connected to one of the two ends of the electrode assemblies. The battery may further includes 1) a spacer and 2) a can configured to accommodate i) the current collecting plate, ii) the plurality of electrode assemblies and iii) the spacer, wherein the spacer is positioned i) between adjacent electrode assemblies and/or ii) between an inner surface of the can and at least one of the electrode assemblies, and wherein the spacer comprises at least one non-linear portion which contacts the outer side of at least one of the electrode assemblies.

Abstract: Disclosed is a rechargeable lithium battery that includes a positive electrode having an active mass density of about 3.4 g/cc to about 4.0 g/cc, a negative electrode, and an electrolyte including a non-aqueous organic solvent including a compound represented by Chemical Formula 1 in an amount of about 10 volume % to about 50 volume % based on the total amount of the non-aqueous organic solvent. Chemical Formula 1: CH3COO—R1, wherein R1 is a C1 to C4 linear or branched alkyl group.

Abstract: A rechargeable battery is disclosed. In one embodiment, the battery includes i) a current collecting plate, ii) a plurality of electrode assemblies electrically connected in parallel with each other via the current collecting plate, wherein each of the electrode assemblies comprises two opposing ends and an outer side formed between the two ends, and wherein the current collecting plate is electrically connected to one of the two ends of the electrode assemblies. The battery may further includes 1) a spacer and 2) a can configured to accommodate i) the current collecting plate, ii) the plurality of electrode assemblies and iii) the spacer, wherein the spacer is positioned i) between adjacent electrode assemblies and/or ii) between an inner surface of the can and at least one of the electrode assemblies, and wherein the spacer comprises at least one non-linear portion which contacts the outer side of at least one of the electrode assemblies.

Abstract: A secondary battery that includes a cylindrical can, an electrode assembly arranged in a jelly-role configuration within the cylindrical can and having a core extending about an axis thereof and a hollow center pin arranged within the core of the electrode assembly and having an inner diameter and an outer diameter, the outer diameter forming ones of a pair of radial lengths diametrically opposite from each other, each of said pair of radial lengths extending from the outer diameter of the center pin to an external surface of the core, wherein the sum of the pair of radial lengths is in the range of 5% to 54% of the inner diameter of the center pin.