Non-aqueous electrolyte rechargeable battery

A non-aqueous electrolyte rechargeable battery comprising:

• an element for electromotive force including an electrode of first polarity and an electrode of second polarity;
• a battery case having an open top end for accommodating the element for electromotive force, and being electrically connected to the electrode of first polarity;
• and
• a closure assembly for closing the open top end of the battery case, including an external terminal, an internal terminal electrically connected to the electrode of second polarity, a switch element in electrical contact with both of the external terminal and the internal terminal, and a ring-like conductive element electrically connected to the battery case and electrically insulated from both of the external terminal and the internal terminal, wherein
• the switch element disconnects itself from the external terminal and makes electrical contact with the ring-like conductive element in response to a change in temperature of the battery, thereby breaking electrical connection between the battery and an external power source and establishing a short circuit to cause the battery to discharge, and wherein the switch element restores to its initial state in response to a change in temperature of the battery, thereby re-establishing electrical connection between the battery and the external power source.