Sealed battery and method for manufacturing the same

摘要

A sealed battery includes a sealing plate 13 sealing a mouth of an outer can, an external terminal 16 attached to the sealing plate 13 and having a connecting terminal 23, and a current interruption mechanism 18 interrupting current in response to pressure increase in the outer can that is installed in a conductive pathway electrically connecting the connecting terminal 23 and an electrode assembly. In the connecting terminal 23, a through-hole 23b continuing to the space on the current interruption mechanism 18 at the side corresponding to the outside of the battery is formed. The through-hole 23b is sealed with a terminal stopper 30 made of an elastic member so as to form a closed space between the terminal stopper 30 and current interruption mechanism 18. An electrolyte or washing solution hardly enters the current interruption mechanism during the manufacture can be provided.

主权项

1. A sealed battery comprising:
an outer can including a mouth; in the outer can, an electrode assembly including a positive electrode plate and a negative electrode plate; a sealing plate sealing the mouth of the outer can; and an external terminal attached to the sealing plate and including a connecting terminal, the connecting terminal and the electrode assembly being electrically connected; in a conductive pathway electrically connecting the connecting terminal and the electrode assembly, a current interruption mechanism that interrupts current in response to pressure increase in the outer can being installed; the connecting terminal including inside a through-hole continuing a space on the current interruption mechanism at a side corresponding to the outside of the battery; and the through-hole being tightly sealed.