Abstract: A separator for a rechargeable lithium battery includes a backbone polymer, an ion conductive polymer coating the backbone polymer, and an electrolyte solution immersing the backbone polymer, wherein the backbone polymer and the ion conductive polymer are different from each other.

Abstract: A secondary battery includes an electrode assembly, a case having an opening at an upper portion to accommodate the electrode assembly, a cap plate for covering the opening of the case, and a retainer surrounding a corner portion of the electrode assembly, the retainer being disposed between the electrode assembly and a bottom of the case.

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 rechargeable battery includes an electrode assembly including first electrodes and second electrodes, a casing including a space in which the electrode assembly is embedded, a cap plate combined with the casing, and a first thin film insulating member fused with the casing and surrounding the casing.

Abstract: A secondary battery including a first electrode assembly, a second electrode assembly, a case accommodating the first and second electrode assemblies, a terminal part electrically connected to the first and second electrode assemblies, and exposed to an outside of the case, and a plurality of short circuit inducing members between the first electrode assembly and the case, between the second electrode assembly and the case, and between the first electrode assembly and the second electrode assembly.

Abstract: A rechargeable battery includes a case, an electrode assembly in the case, a current collecting member electrically connected to the electrode assembly, a fuse part in the current collecting member, and an elastic member adjacent to the fuse part. The elastic member is configured to provide an elastic force to the fuse part.

Abstract: A rechargeable battery including an electrode assembly; a case containing the electrode assembly; a cap plate covering an opening of the case; and an external insulating member on an outer surface of the case, the external insulating member including an insulating cover on the cap plate, and an insulating tape coupled to the insulating cover on the case.

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 secondary battery and an electric vehicle or hybrid electric vehicle, the secondary battery including a case; an electrode terminal coupled to an electrode assembly in the case; a nut fastened with the electrode terminal, the nut having a thread on an inner circumferential surface thereof; a cap plate hermetically sealing the case, the electrode terminal extending through the cap plate; and a seal gasket between the electrode terminal and the cap plate, the seal gasket being compressed by the nut, wherein the electrode terminal includes a flange part below a bottom surface of the cap plate, an insertion part passing through a through-hole of the cap plate, and a fastening part having a thread recess engaged with the thread of the nut, and wherein the nut is rotatably fastened with the fastening part of the electrode terminal, such that a front end of the thread contacts a back end of the thread recess when viewed from a rotation direction of the nut.

Abstract: A secondary battery module includes a plurality of secondary batteries arranged in parallel with each other, each of the plurality of secondary batteries including an electrode assembly, a case accommodating the electrode assembly, first and second electrode terminals electrically coupled to the electrode assembly, and a short circuit member electrically coupled to the first electrode terminal and configured to protrude towards outside of the case when an internal pressure in the case increases, a plurality of first connection members coupling the plurality of secondary batteries to each other in series, and a second connection member having one side facing a short circuit member of one of the plurality of secondary batteries and an other side electrically coupled to a second electrode terminal of a secondary battery arranged at a last position from among the plurality of secondary batteries.

Abstract: There is a provided a secondary battery capable of preventing unloading and rotating caused by possible vibration or shock by increasing a coupling force among the vent plate, the insulator, and the cap-down that compose the cap assembly of the secondary battery. To increase the coupling force among the vent plate, the insulator, and the cap-down, protrusions and corresponding grooves or holes, and grooves with step areas may be formed. Alternatively, a plurality of insulators may be formed in a divided form. A secondary battery with a reliable cap assembly can be implemented through such a structural change.

Abstract: A rechargeable battery module includes a plurality of rechargeable batteries, each of the rechargeable batteries including an electrode assembly including a positive electrode and a negative electrode, and a first electrode terminal and a second electrode terminal connected to the electrode assembly, and a bus bar electrically connecting the rechargeable batteries, the bus bar including a bus bar fuse part. The first electrode terminal is connected to and installed with a current collecting member that connects the electrode assembly and the first electrode terminal. The current collecting member includes a current collecting fuse part. An operation current at which the bus bar fuse part is melted is less than an operation current at which the current collecting fuse part is melted.

Abstract: A secondary battery includes an electrode assembly, a case having an opening at an upper portion to accommodate the electrode assembly, a cap plate for covering the opening of the case, and a retainer surrounding a corner portion of the electrode assembly, the retainer being disposed between the electrode assembly and a bottom of the case.

Abstract: A rechargeable battery includes an electrode assembly including first electrodes and second electrodes, a casing including a space in which the electrode assembly is embedded, a cap plate combined with the casing, and a first thin film insulating member fused with the casing and surrounding the casing.

Abstract: A secondary battery including an electrode assembly including a first electrode, a second electrode, and a separator between the first and second electrodes; a first collecting part electrically connected to the first electrode; a second collecting part electrically connected to the second electrode; a case configured to receive the electrode assembly; a cap assembly including a cap plate configured to seal an opening of the case; and an auxiliary connection part electrically connected between the second collecting part and the cap plate, and the second collecting part includes at least two fuse parts, a first extension part, and a second extension part connected to the second electrode.

Abstract: A separator for a rechargeable lithium battery includes a backbone polymer, an ion conductive polymer coating the backbone polymer, and an electrolyte solution immersing the backbone polymer, wherein the backbone polymer and the ion conductive polymer are different from each other.