The present invention provides a sealed
cell which can restrain floating and inclining of a sealing body, and avoid bad
welding. The sealed
cell adopts an opening of a sealing body (2) for sealing, wherein, the opening is used for canning externally, a sealing body (11) is inserted into a hole (8) formed on the sealing body (2), the hole (8) forming makes the
diameter increased following a surface of a taper face (15) towards to the
package body (2), an interval (16) forms between the taper face (15) and the sealing body (11), and the sealing body (11) is welded on the
package body (2). The taper face (15) is benefit for eccentricity and inclining of the sealing body (11) in installing. A
biting sheet generated in inserting the sealing body is stored in the interval (16). The floating and inclining of the sealing body (11) caused by sandwiching of the
biting sheet can be restrained and bad
welding is avoided.