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US 2018/0219200 A1Published application
Pressure equalising device
AssigneeBimed Teknik Aletler Sanayi Ve Ticaret A.S.
InventorsYilmaz Albukrek, Klaus Kempf
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Abstract
A pressure compensation device for compensating an internal pressure in a housing of an electrochemical device includes: at least one gas-permeable membrane for gas exchange between an interior of the housing and surroundings of the electrochemical device; and a valve body that can be transferred from a home position resting on a valve seat into a use position remote from the valve seat, the valve body including a gas throughflow opening that is sealed by the gas-permeable membrane.
Claims11
1:
- A pressure compensation device for compensating an internal pressure in a housing of an electrochemical device, comprising:
- at least one gas-permeable membrane configured for gas exchange between an interior of the housing and surroundings of the electrochemical device;
- and
- a valve body configured to be transferred from a home position resting on a valve seat into a use position remote from the valve seat, the valve body comprising a gas throughflow opening that is sealed by the gas-permeable membrane.
1 more element
2:
- The pressure compensation device according to claim 1, wherein the valve body comprises a valve surface to which the internal pressure is applied, and
- wherein the valve surface is formed by a surface of the gas-permeable membrane at least in part.
3:
- The pressure compensation device according to claim 2, wherein the valve surface is entirely or substantially entirely formed by the gas-permeable membrane.
4:
- The pressure compensation device according to claim 1, wherein the gas-permeable membrane extends in a membrane plane which extends at an angle to a movement axis of the valve body.
5:
- The pressure compensation device according to claim 4, wherein the gas-permeable membrane and the movement axis are arranged concentrically relative to one another.
6:
- The pressure compensation device according to claim 1, further comprising a pressure generating mechanism configured to counteract the internal pressure and to hold the valve body in the home position, provided that the internal limiting pressure is not exceeded.
7:
- The pressure compensation device according to claim 1, further comprising a housing insert configured to be fastened on or in an opening of the housing of the electrochemical device.
8:
- The pressure compensation device according claim 7, wherein the housing insert comprises an interior for arranging the valve body and the gas-permeable membrane that is connected to the valve body.
9:
- The pressure compensation device according to claim 1, wherein, when the valve body is in the home position, gas is guided along a gas-exchange path, and
- wherein, when the valve body is in the use position, gas is guided along a flow path which differs from the gas exchange path.
10:
- The pressure compensation device according to claim 9, wherein the flow path extends around the valve body.
11:
- The pressure compensation device according to claim 4, wherein the membrane plane extends perpendicularly to the movement axis.