Abstract: A rechargeable battery includes an electrode assembly including first and second electrodes; a case accommodating the electrode assembly; a cap plate coupled to the case and having a short-circuit opening formed therein; a first electrode terminal electrically connected to the first electrode; a second electrode terminal electrically connected to the second electrode; a short-circuit member fixed to the cap plate in the short-circuit opening and configured to electrically connect the first electrode and the second electrode to each other; and a top insulation member covering the short-circuit member and having a plurality of air holes formed therein.

Abstract: A system for measuring a length of an electrode plate includes a body on which an electrode plate roll formed by spirally winding the electrode plate is provided; a control device to which the body is combined; and a measuring device including a thickness measurement unit combined with the body and electrically connected to the control device to measure a spirally wound thickness of the electrode plate that is spirally wound on the electrode plate roll, and a diameter measurement unit to measure a diameter of a hollow portion of the electrode plate roll, wherein the control device receives a moving distance of the thickness measurement unit and a moving distance of the diameter measurement unit and calculates the length of the electrode plate of the electrode plate roll.

Abstract: A rechargeable battery including an electrode assembly; a case housing the electrode assembly; a first terminal post electrically coupled to an electrode of the electrode assembly; and a first terminal plate including a first plate coupled to the first terminal post and a second plate coupled to the first plate, wherein the first plate and the second plate are made from different materials.

Abstract: A rechargeable battery includes a case, a first electrode coupled to the case, a second electrode coupled to the case and the second electrode having a portion extending outside of the case, a short bar electrically coupled to the portion of the second electrode, and an extensible member extending from the case and at least a portion of the short bar being on the extensible member with a gap therebetween. The extensible member is configured to couple the short bar electrically to the first electrode in response to an overcharging condition of the rechargeable battery, thereby short-circuiting the first and second electrodes via the short bar.

Abstract: A rechargeable battery including: an electrode assembly; a case accommodating the electrode assembly; a cap plate covering an opening of the case; an electrode terminal on the cap plate; and a lead tab connecting the electrode assembly to the electrode terminal, and including a fuse, the fuse including a plurality of sub-fuses defined along a width of the lead tab by a plurality of through holes formed in the lead tab.

Abstract: A rechargeable battery including an electrode assembly that performs a charge and discharge operation; a case that houses the electrode assembly; a cap plate coupled to an opening of the case; an electrode terminal installed in the cap plate; and a lead tab that connects the electrode assembly to the electrode terminal, wherein the lead tab includes a current collecting connection portion that is connected to the electrode assembly; a terminal connection portion that is bent from the current collecting connection portion to be connected to the electrode terminal; and an injection material that embeds the terminal connection portion in which a fuse is formed, and wherein the injection material includes an exposing hole therein, the exposing hole exposing at least one side of the fuse.

Abstract: A rechargeable battery including an electrode assembly including a first electrode, a second electrode, and a separator between the first and second electrodes; a case housing the electrode assembly; a cap plate covering an opening of the case; an electrode terminal extending through the cap plate; a lead tab including a fuse part and connecting the electrode terminal and the electrode assembly; and an auxiliary discharge path between opposite sides of the fuse part and having a second electrical resistance value greater than a first electrical resistance value of the fuse part.

Abstract: A rechargeable battery includes an electrode assembly in a case, a cap plate sealing an opening of the case, a terminal portion electrically coupled to the electrode assembly, the terminal portion being on the cap plate, and a connecting member extending from the terminal portion and being spaced apart from the cap plate, the connecting member electrically coupling the terminal portion and the cap plate.

Abstract: A rechargeable battery includes an electrode assembly including first and second electrodes; a case accommodating the electrode assembly; a cap plate coupled to the case and having a short-circuit opening formed therein; a first electrode terminal electrically connected to the first electrode; a second electrode terminal electrically connected to the second electrode; a short-circuit member fixed to the cap plate in the short-circuit opening and configured to electrically connect the first electrode and the second electrode to each other; and a top insulation member covering the short-circuit member and having a plurality of air holes formed therein.

Abstract: The cell barrier for a rechargeable battery module of the present invention includes a metal body and an insulating layer disposed on the surface of the metal body. The cell barrier is interposed between unit cells to electrically insulate between the unit cells. The insulating layer is selected from the group consisting of a resin layer, an inorganic oxide layer, an anodized layer, and a composite layer thereof. The cell barrier also has channels to provide for additional cooling by a heat transfer medium. A single unit cell can also be used with a cell barrier disposed along the unit cell for insulation and cooling.

Abstract: A rechargeable battery including: an electrode assembly; a case accommodating the electrode assembly; a cap plate covering an opening of the case; an electrode terminal on the cap plate; and a lead tab connecting the electrode assembly to the electrode terminal, and including a fuse, the fuse including a plurality of sub-fuses defined along a width of the lead tab by a plurality of through holes formed in the lead tab.

Abstract: A rechargeable battery including an electrode assembly that performs a charge and discharge operation; a case that houses the electrode assembly; a cap plate coupled to an opening of the case; an electrode terminal installed in the cap plate; and a lead tab that connects the electrode assembly to the electrode terminal, wherein the lead tab includes a current collecting connection portion that is connected to the electrode assembly; a terminal connection portion that is bent from the current collecting connection portion to be connected to the electrode terminal; and an injection material that embeds the terminal connection portion in which a fuse is formed, and wherein the injection material includes an exposing hole therein, the exposing hole exposing at least one side of the fuse.

Abstract: A rechargeable battery including; an electrode assembly including a separator; a first electrode on a first surface of the separator; a second electrode on a second surface of the separator; and an electrolyte solution at a first interface of the first electrode and the separator and a second interface of the second electrode and the separator, the electrode assembly being spiral-wound and being impregnated with an electrolyte solution; an insulation tape wrapping the electrode assembly; a case housing the electrode assembly that is coated with the insulation tape; and a cap plate coupled to the case and electrically connected to the electrode assembly.

Abstract: A system for measuring a length of an electrode plate includes a body on which an electrode plate roll formed by spirally winding the electrode plate is provided; a control device to which the body is combined; and a measuring device including a thickness measurement unit combined with the body and electrically connected to the control device to measure a spirally wound thickness of the electrode plate that is spirally wound on the electrode plate roll, and a diameter measurement unit to measure a diameter of a hollow portion of the electrode plate roll, wherein the control device receives a moving distance of the thickness measurement unit and a moving distance of the diameter measurement unit and calculates the length of the electrode plate of the electrode plate roll.

Abstract: A rechargeable battery includes: an electrode assembly; a case housing the electrode assembly, the case comprising a side wall and having a case opening; a terminal coupled to the electrode assembly; a lead tab coupled between the terminal and the electrode assembly, the lead tab comprising a cell fuse; and a thermal insulation member at a portion of the lead tab adjacent the case opening and another portion of the lead tab adjacent the side wall.

Abstract: A battery management system of a vehicle utilizing electrical energy and a driving method thereof is provided. The battery management system includes a sensing unit and a main control unit (MCU). The sensing unit detects voltage of a battery cell. MCU determines an operation state of a vehicle, and generates a sampling signal depending on the operation state of the vehicle. The sampling control signal transmits to the sensing unit, and controls the detection of the voltage of the battery cell. The operation state of the vehicle includes a running state and a stopping state.

Abstract: A battery management system (BMS) manages a battery for a hybrid vehicle including an engine control unit and a motor generator controlled by the engine control unit and connected to a battery including at least one battery pack, each pack including a plurality of battery cells. The BMS includes a sensor and an MCU unit. The sensor detects temperature, current, and open circuit voltage (OCV) of the battery. The MCU receives the detected temperature, current, and OCV, calculates a key-off time period which is a period between a time point when a battery key-on state ends and a time point when a subsequent battery key-on state begins, calculates an OCV error range corresponding to an SOC error range detected at the key-off time point, and infers an initial SOC of the battery.

Abstract: A rechargeable battery including an electrode assembly including a first electrode, a second electrode, and a separator between the first and second electrodes; a case housing the electrode assembly; a cap plate covering an opening of the case; an electrode terminal extending through the cap plate; a lead tab including a fuse part and connecting the electrode terminal and the electrode assembly; and an auxiliary discharge path between opposite sides of the fuse part and having a second electrical resistance value greater than a first electrical resistance value of the fuse part.

Abstract: According to an embodiment of the present invention, a rechargeable battery includes a case, a first electrode coupled to the case, a second electrode coupled to the case and the second electrode having a portion extending outside of the case, a short bar electrically coupled to the portion of the second electrode, and an extensible member extending from the case and at least a portion of the short bar being on the extensible member with a gap therebetween. The extensible member is configured to couple the short bar electrically to the first electrode in response to an overcharging condition of the rechargeable battery, thereby short-circuiting the first and second electrodes via the short bar.

Abstract: A battery management system and a driving method include a first switch coupled to an end of a resistor. When calculating an internal resistance of a battery, the first switch is turned on and the battery and the resistor are coupled in parallel. Then, the internal resistance of the battery is calculated by using a second current flowing to the battery and a first current flowing to the resistor.