NOVELTY - Sealed battery comprises: a columnar battery case encapsulating a chargeable/dischargeable electrode assembly and an electrolyte in interior and having a vent that cleaves up when a pressure in the interior exceeds a threshold; a cover that covers at least a portion of an outer surface of the vent to prevent it from being covered with resin which is formed on the battery case; and a temperature protection device electrically connected with a terminal of the battery case and capable of blocking electric current when a temperature exceeds a threshold.    USE - Used as sealed battery.    ADVANTAGE - The sealed battery utilizes the overhang, which covers the temperature protection device in a more reliable manner, and can be deformed more easily toward the temperature protection device during sealing with resin, thus preventing the resin from seeping around the temperature protection device in a more reliable manner, preventing the temperature protection device from being affected by heat from the resin in a more reliable manner, and reducing the manufacturing costs.    DETAILED DESCRIPTION - Sealed battery comprises: a columnar battery case encapsulating a chargeable/dischargeable electrode assembly and an electrolyte in interior and having a vent that cleaves up when a pressure in the interior exceeds a threshold; a cover that covers at least a portion of an outer surface of the vent to prevent it from being covered with resin which is formed on the battery case; and a temperature protection device electrically connected with a terminal of the battery case and capable of blocking electric current when a temperature exceeds a threshold. The cover includes an overhang located to cover at least a portion of the temperature protection device when it is mounted on the cover, and the temperature protection device is at least partially covered with the overhang and, together with the cover, covered with the resin. An INDEPENDENT CLAIM is also included for manufacturing the sealed battery comprising: manufacturing the battery body and sealing the chargeable/ dischargeable electrode assembly and electrolyte inside a columnar battery case; preparing a cover including an overhang that covers a temperature protection device and in which the temperature protection device can slide; preparing the temperature protection device and connecting a protection circuit with one of two connecting wires with the temperature protection device; attaching the cover on the battery case; attaching the temperature protection device and sliding the temperature protection device connected with the protection circuit towards the cover so that the device is covered with the overhang; connecting the other connecting wire to the temperature protection device and terminal of the battery case; bending the connecting wire connecting the protection circuit with the temperature protection device so that the protection circuit is located above the cover; and forming the resin on the battery case so that the resin covers the temperature protection device, an inner frame and the protection circuit.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic cross-sectional view of the sealed battery.    Sealed battery (1)    Battery case (2)    Electrode assembly (30)    Temperature protection device (43)    Overhang (52)