Safety vent device used in a battery module

Dispositif de soupape d'échappement de sécurité utilisé dans un module de batterie

Sicherheitsventilvorrichtung zur Verwendung in einem Batteriemodul

Abstract

In a sealed rechargeable battery module wherein a safety vent device (13) is provided to release the internal pressure of the battery when the pressure has reached a predetermined value, the safety vent device comprises a valve case (25) formed with a vent (26) and a sealing protrusion (27) surrounding this vent, a valve body (31) inserted in the valve case including a sealing portion (28) that is brought in tight contact with the sealing protrusion, a rigid holder (29) for supporting the sealing portion, and a resilient portion (30) for pressing the rigid holder toward the vent, and a valve cover (32) formed with apertures (33) for closing the upper open end of the valve case in a state wherein the resilient portion of the valve body is compressed.

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Patent Citations (1)

    Publication numberPublication dateAssigneeTitle
    EP-0692829-A1January 17, 1996Matsushita Electric Industrial Co., Ltd.Wiederschliessbares Sicherheitsventil und dieses enthaltende wiederaufladbare alkalische Batterie

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Cited By (4)

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    CN-100474681-CApril 01, 2009三星Sdi株式会社Lithium secondary battery
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    CN-103608947-AFebruary 26, 2014朴力美电动车辆活力株式会社Sealed battery and safety valve
    CN-103608947-BDecember 09, 2015朴力美电动车辆活力株式会社密封电池及安全阀