| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrochemical element having a safety valve which normally expels various gases produced in the use of the electrochemical element out of a vessel, including cells such as lithium cells, nickel hydrogen cells, etc., capacitors such as aluminum electrolytic capacitors, electric double layer capacitors, etc. and sensors such as electric quantity memory elements, etc., with leaving an electrolyte in the vessel, and is broken when a predetermined internal pressure is reached. SOLUTION: An aluminum outer case 1 housing an electrochemical element 6 has a through-hole at the top, and a gas-permeable pressure regulating unit 9 composed of a gas-permeable pressure regulating valve composite material 3 and a pressure-bonded ring 4 is provided in the through-hole. In the use of the electrochemical element 6, the pressure regulating unit 9 expels only a gas out of the case to regulate its pressure. If the pressure exceeds a specified value, the unit 9 is broken to avoid more rise of the internal pressure. COPYRIGHT: (C)2004,JPO&NCIPI
|
