Abstract: A rechargeable battery includes: an electrode assembly comprising: a first electrode and a second electrode; a case comprising an opening at a side of the case, the case accommodating the electrode assembly; a cap assembly comprising a cap plate covering the opening of the case, a first terminal protruding out of the cap plate and electrically coupled to a first electrode, and a second terminal protruding out of the cap plate and electrically coupled to a second electrode; a first current collector coupled to a lower part of the cap assembly and having a first side electrically connected to the first terminal and a second side coupled to the first electrode; and a deformation preventer coupled to the lower part of the cap assembly and formed to accommodate a part of the first current collector.

Abstract: An electrode assembly and a rechargeable battery having electrode tab are disclosed. In one aspect, the electrode assembly includes a first electrode and a second electrode which are wound with a separator placed therebetween The first electrode includes a first coated portion coated with an active material and a plurality of first electrode tabs T1?Tn protruding outwardly from the first coated portion, wherein n is a natural number greater than 1. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1?Tn are respectively formed, wherein the first and nth portions of the first electrode respectively define the innermost and outermost portions thereof. Each of the first electrode tabs T1?Tn includes at least one tab, and wherein the number of the first electrode tab Tn is different from the number of each of the first electrode tabs T1?Tn?1.

Abstract: An electrode assembly and a rechargeable battery including the electrode assembly are disclosed. In one aspect, the electrode assembly includes a first electrode and a second electrode that are wound with a separator placed therebetween. The second electrode includes a first coated portion coated with an active material and a plurality of first electrode tabs T1-Tn protruding outwardly from the first coated portion, wherein n is a natural number greater than 2. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions of the first electrode respectively define the innermost and outermost portions thereof. The distance between the first electrode tab Tn placed at the outermost portion and the first electrode Tn?1 placed at the second outermost portion of the first electrode is less than any of the distances between two adjacent ones of the other first electrode tabs T1-Tn?1.

Abstract: An electrode assembly and a secondary battery having an electrode tab are disclosed. In one aspect, the electrode assembly includes first and second electrodes which are wound with a separator placed therebetween. The first electrode includes a first coated portion, and a plurality of first electrode tabs T1-Tn not coated with an active material and protruding outwardly from the first coated portion, wherein n is greater than 2. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions respectively define the innermost and outermost portions thereof. The distance between the first electrode tab Tn placed at the outermost portion and the first electrode Tn?1 placed at the second outermost portion is greater than any of the distances between two adjacent ones of the other first electrode tabs T1-Tn?1.

Abstract: A secondary battery includes an electrode assembly including an electrode tab with a buffer, a case to accommodate the electrode assembly, and an insulator between the electrode assembly and the case.

Abstract: A rechargeable battery includes: an electrode assembly comprising: a first electrode and a second electrode; a case comprising an opening at a side of the case, the case accommodating the electrode assembly; a cap assembly comprising a cap plate covering the opening of the case, a first terminal protruding out of the cap plate and electrically coupled to a first electrode, and a second terminal protruding out of the cap plate and electrically coupled to a second electrode; a first current collector coupled to a lower part of the cap assembly and having a first side electrically connected to the first terminal and a second side coupled to the first electrode; and a deformation preventer coupled to the lower part of the cap assembly and formed to accommodate a part of the first current collector.

Abstract: An electrode assembly and a rechargeable battery having electrode tab are disclosed. In one aspect, the electrode assembly includes a first electrode and a second electrode which are wound with a separator placed therebetween The first electrode includes a first coated portion coated with an active material and a plurality of first electrode tabs T1-Tn protruding outwardly from the first coated portion, wherein n is a natural number greater than 1. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions of the first electrode respectively define the innermost and outermost portions thereof. Each of the first electrode tabs T1-Tn includes at least one tab, and wherein the number of the first electrode tab Tn is different from the number of each of the first electrode tabs T1-Tn?1.

Abstract: An electrode assembly and a secondary battery having an electrode tab are disclosed. In one aspect, the electrode assembly includes first and second electrodes which are wound with a separator placed therebetween. The first electrode includes a first coated portion, and a plurality of first electrode tabs T1-Tn not coated with an active material and protruding outwardly from the first coated portion, wherein n is greater than 2. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions respectively define the innermost and outermost portions thereof. The distance between the first electrode tab Tn placed at the outermost portion and the first electrode Tn-1 placed at the second outermost portion is greater than any of the distances between two adjacent ones of the other first electrode tabs T1-Tn-1.

Abstract: An electrode assembly and a rechargeable battery including the electrode assembly are disclosed. In one aspect, the electrode assembly includes a first electrode and a second electrode that are wound with a separator placed therebetween. The second electrode includes a first coated portion coated with an active material and a plurality of first electrode tabs T1-Tn protruding outwardly from the first coated portion, wherein n is a natural number greater than 2. The first electrode, when spread in a plane form, includes first to nth portions on which the first electrode tabs T1-Tn are respectively formed, wherein the first and nth portions of the first electrode respectively define the innermost and outermost portions thereof. The distance between the first electrode tab Tn placed at the outermost portion and the first electrode Tn-1 placed at the second outermost portion of the first electrode is less than any of the distances between two adjacent ones of the other first electrode tabs T1-Tn-1.

Abstract: An electrode assembly includes a positive electrode plate, a negative electrode plate, and a separator interposed between the positive and negative electrode plates, the separator having a polymer binder coating thereon, the positive electrode plate, the separator, and the negative electrode plate being sequentially stacked and wound in the shape of a jelly-roll, the jelly-roll being pressed through a heat press process.

Abstract: An active material for a battery has a surface treatment layer that includes a conductive agent and at least one coating-element-containing compound selected from the group consisting of a coating-element-containing hydroxide, a coating-element-containing oxyhydroxide, a coating-element-containing oxycarbonate, a coating-element-containing hydroxycarbonate, and a mixture thereof.

Abstract: A lithium rechargeable battery includes a bimetal and a current interruption means that is actuated by the inner pressure or heat generated from within the rechargeable battery in the case of an abnormal operation thereof to interrupt the flow of current for improved stability of the lithium rechargeable battery.

Abstract: An apparatus and method to detect failure of an electrolytic capacitor that smoothes a DC voltage in an inverter circuit. The apparatus detects failure of a smoothing electrolytic capacitor in a motor drive inverter circuit that rectifies and smoothes an AC voltage through a rectifier and the smoothing electrolytic capacitor and converts a rectified and smoothed DC voltage into a 3-phase voltage to drive a motor. The apparatus includes a voltage meter, a current sensing unit, and a controller. The voltage meter measures a DC voltage of an inverter when the motor is not in operation. The current sensing unit measures a phase current of the motor when the motor is not in operation. The controller estimates an ESR value of the smoothing electrolytic capacitor from the DC voltage of the inverter and the motor phase current to detect failure of the smoothing electrolytic capacitor.

Abstract: The present invention relates to a negative active material for a lithium rechargeable battery and a method of preparing the same, and the negative active material prepared by coating a carbon source with a coating liquid, and drying the carbon source, and the negative active material comprises a core having a carbon source with surface-treatment layer formed on the surface of the core, the surface-treatment layer having at least one compound of coating element selected from the group cosnsisting of amorphous, semi crystalline, or crystalline hydroxides, oxyhydroxides, oxycarbonates, and hydroxidecarbonates.

Abstract: An active material for a battery has a surface treatment layer that includes a conductive agent and at least one coating-element-containing compound selected from the group consisting of a coating-element-containing hydroxide, a coating-element-containing oxyhydroxide, a coating-element-containing oxycarbonate, a coating-element-containing hydroxycarbonate, and a mixture thereof.

Abstract: An active material for a battery has a surface treatment layer that includes a conductive agent and at least one coating-element-containing compound selected from the group consisting of a coating-element-containing hydroxide, a coating-element-containing oxyhydroxide, a coating-element-containing oxycarbonate, a coating-element-containing hydroxycarbonate, and a mixture thereof.

Abstract: A lithium battery which has an anode, a cathode having a compound capable of intercalating and deintercalating lithium, a separator interposed between the cathode and the anode, and an electrolyte solution having an electrolyte solute dissolved in a nonaqueous solvent. The nonaqueous solvent includes a mixed solvent containing 8 to 15% by volume of ethylene carbonate, 10 to 35% by volume of ?-butyrolactone, 35 to 65% by volume of at least one linear carbonate selected from the group consisting of dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, methylpropyl carbonate, ethylpropyl carbonate and methylbutyl carbonate and 8 to 15% by volume of fluorobenzene, and 0.5 to 9 parts by volume of vinylene carbonate based on 100 parts by volume of the mixed solvent. The nonaqueous solvent may further include 0.05 to 5 parts by volume of vinyl sulfone, isooxazole or a mixture thereof based on 100 parts by volume of the mixed solvent.

Abstract: A lithium battery which has an anode, a cathode having a compound capable of intercalating and deintercalating lithium, a separator interposed between the cathode and the anode, and an electrolyte solution having an electrolyte solute dissolved in a nonaqueous solvent. The nonaqueous solvent includes a mixed solvent containing 8 to 15% by volume of ethylene carbonate, 10 to 35% by volume of ?-butyrolactone, 35 to 65% by volume of at least one linear carbonate selected from the group consisting of dimethyl carbonate, diethyl carbonate, ethylmethyl carbonate, methylpropyl carbonate, ethylpropyl carbonate and methylbutyl carbonate and 8 to 15% by volume of fluorobenzene, and 0.5 to 9 parts by volume of vinylene carbonate based on 100 parts by volume of the mixed solvent. The nonaqueous solvent may further include 0.05 to 5 parts by volume of vinyl sulfone, isooxazole or a mixture thereof based on 100 parts by volume of the mixed solvent.

Abstract: Disclosed is a negative active material for a lithium rechargeable battery comprising a core having a carbon source with a surface-treatment layer formed on the surface of the core. The surface-treatment layer has at least one amorphous, semi crystalline, or crystalline coating element compound selected from the group consisting of coating-element-included hydroxides, coating-element-included oxyhydroxides, coating-element-included-oxycarbonates, and coating-element-included hydroxidecarbonates. Also disclosed is a method of preparing a negative active material for a lithium rechargeable battery comprising coating a carbon source with a coating liquid, and drying the carbon source. The coating liquid comprises a solute of a coating element source and a solvent of a mixture of an organic solvent and water.

Abstract: A secondary battery having a cap assembly, including an electrode assembly; a case in which the electrode assembly is located; a cap assembly having a cap plate coupled to and hermetically sealing the case. A terminal member has a head with a stepped protrusion penetrating the cap plate and insulated from the cap plate by an insulating member. The stepped protrusion presses the insulating member in multiple steps. The terminal member is connected to a positive or negative electrode terminal of the electrode assembly.