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    • 1. 发明授权
    • Electrochemical cell having improved pressure vent
    • 电化学电池具有改进的压力通风口
    • US5258242A
    • 1993-11-02
    • US14965
    • 1993-02-08
    • Kevin DeanArthur HollandDonn Fillmore
    • Kevin DeanArthur HollandDonn Fillmore
    • H01M2/12
    • H01M2/1276H01M2/1223H01M2/1205
    • The electrochemical cell of the instant invention includes a case having a gas outlet, one or more positive electrodes positioned within the case, one or more negative electrodes positioned within the case electrode separators positioned between the positive and negative electrodes, electrolyte positioned within the case, and a pressure vent for releasing internal pressure occurring in the case to the surrounding atmosphere. The pressure vent is affixed to the case covering the gas outlet, the pressure vent includes a vent housing having a hollow interior area in gaseous communication with the surrounding atmosphere and the interior of the case via the gas outlet, a pressure release piston positioned within the hollow interior area, the pressure release piston sized to surround the gas outlet and having a seal groove configured to encapsulate all but one surface of a seal mounted within the seal groove, leaving the non-encapsulated surface of the seal exposed, and a compression spring positioned to urge the pressure release piston to compress the seal in the seal groove and block the gas outlet in the case.
    • 本发明的电化学电池包括具有气体出口的壳体,位于壳体内的一个或多个正极,位于正极和负极之间的壳体电极分离器内的一个或多个负极,位于壳体内的电解质, 以及用于将外壳中发生的内部压力释放到周围大气的压力通风口。 压力通风口固定到覆盖气体出口的壳体上,压力通风口包括通气口壳体,其具有与周围大气气体连通的中空内部区域和通过气体出口的壳体内部,位于 中空内部区域,压力释放活塞的尺寸设置成围绕气体出口并具有密封槽,该密封槽构造成将安装在密封槽内的密封件的除了一个表面之外的所有表面封装,使密封件未封装的表面露出, 定位成促使压力释放活塞压缩密封槽中的密封并阻塞气体出口。