| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery capable of preventing leak current from leaking from an outer case 1 even if sea water or electrolytic liquid are leaked, by a simple constitution covering a metallic bellows leg 3 mounted on a lower end of the outer case 1 by a heat contraction tube 4. SOLUTION: In the battery provided with a pressure levelling device 2 having a metallic bellows free in expansion and contraction communicating with inside of the metallic outer case 1 at lower end of the metallic outer case 1 housing a power generation element; and the metallic bellows leg 3 preventing the bellows of the pressure levelling device 2 from expansion of exceeding the prescribed length; at least a lower end part of the bellows leg 3 is covered by the heat contraction tube 4 having insulation property. COPYRIGHT: (C)2007,JPO&INPIT |
