Batería secundaria cilíndrica con carga y descarga a alta velocidad

Una batería secundaria cilíndrica (100) que incluye un conjunto (400) de caperuza construido con una estructura en la que un conducto (420), el cual intercepta la corriente eléctrica y descarga el gas a presión cuando aumenta la presión interior de la batería debido al funcionamiento anormal de la batería, está en contacto con una caperuza superior (410) que tiene una parte central que sobresale, en donde el extremo del conducto (420) está curvado para rodear la superficie circunferencial exterior (414) de la caperuza superior (410), y una acanaladura (416) para impedir la fuga de un electrolito e impedir la ocurrencia de defectos en la batería durante el montaje de la batería está formada en las interfaces entre el conducto (420) y la caperuza superior (410) de modo que la acanaladura (416) está de forma continua dispuesta en paralelo con la superficie circunferencial exterior (414) de la caperuza superior (410). Disclosed herein is a cylindrical secondary battery including a cap assembly constructed in a structure in which a vent, which intercepts electric current and discharges pressurized gas when the interior pressure of the battery is increased due to abnormal operation of the battery, is in contact with a top cap having a protruding central part, wherein the end of the vent is bent to surround the outer circumferential surface of the top cap, and a groove for preventing the leakage of an electrolyte and preventing the occurrence of defectiveness of the battery during the assembly of the battery is formed at interfaces between the vent and the top cap such that the groove is arranged in parallel with the outer circumferential surface of the top cap. The secondary battery according to the present invention has the effect of accomplishing high charging and discharging rate, providing uniform output even when external physical impacts, such as vibration or dropping, are applied to the secondary battery, and preventing the occurrence of defectiveness during the assembly of the secondary battery. Furthermore, the leakage of the electrolyte out of the battery is restrained under these conditions. Consequently, the secondary battery according to the present invention can be preferably used as a high-output power source.