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A safety vent body having a passage at the center of the bottom surrounded by a circular protrusion, a safety vent cover having a vent hole bonded to the safety vent body, and an elastic valve component consisting of valve seat and rubber pad bonded together into a one-piece structure and a coil spr

A safety vent body having a passage at the center of the bottom surrounded by a circular protrusion, a safety vent cover having a vent hole bonded to the safety vent body, and an elastic valve component consisting of valve seat and rubber pad bonded together into a one-piece structure and a coil spring, housed in a space provided by the safety vent body and the safety vent cover. A plastic container sealed alkaline rechargeable battery realizes a longer cycle life and high reliability by incorporating a resealable safety vent in accordance with the present invention.

대표청구항 ▼

A sealed alkaline rechargeable battery equipped with a resealable safety vent comprising: a safety vent body having a passage at the center of a bottom portion of said body, an end of said passage terminating in said body surrounded by a circular protrusion, and a safety vent cover having a vent hol

A sealed alkaline rechargeable battery equipped with a resealable safety vent comprising: a safety vent body having a passage at the center of a bottom portion of said body, an end of said passage terminating in said body surrounded by a circular protrusion, and a safety vent cover having a vent hole fastened to said safety valve body by means of bonding to form a unitary structure with a central internal passage, and an elastic valve component comprising a valve seat and a rubber pad fabricated into a one-piece unit, said valve component having a top part and a flange part, said top part inserted inside a coil spring disposed in said central internal passage so that the top surface of said flange part of said valve component compresses said coil spring inside said central internal passage; wherein a bottom surface of said elastic valve component is held against said protrusion inside of said safety vent body and closes said passage in said safety vent body; and wherein a container cover in which said safety vent, is incorporated as a monobloc, or a container cover in which said safety vent is bonded or fusion bonded to become a part of the container cover, is fastened around a top edge of a container by means of bonding or fusion bonding, said safety vent incorporated into said access cover to communicate with and vent gas from inside said container, said container housing an electrode group consisting of at least one positive plate, negative plate and separator and an appropriate quantity of alkaline electrolyte for impregnation of the electrode, said safety vent is hermetically sealed with the container along the latter\s top edge by means of bonding or fusion bonding.