Electrochemical energy store, means of transport, cell vent and method for manufacturing a cell vent
The present disclosure is directed to an electrochemical energy store, a means of transport, a manufacturing method and a cell vent for an electrochemical energy store. In one form a cell vent comprises a first layer comprising a metal and a second layer comprising a first plastic, wherein the first layer and the second layer are arranged successively with respect to a pressure differential on the cell vent.
1 . A cell vent for an electrochemical energy store, comprising:
a first layer comprising a metal; and
a second layer comprising a first plastic;
wherein the first layer and the second layer being arranged lying one behind the other with respect to a pressure differential at the cell vent; and
wherein the first layer has a predetermined breaking point comprising a third plastic.
2 . The cell vent of claim 1 , wherein the first layer has a predetermined breaking point in the form of a ring.
3 . The cell vent of claim 1 , wherein the first plastic has a lower temperature resistance than the third plastic.
4 . The cell vent of claim 1 , wherein the first layer and the second layer are at least one of laminated or adhesively bonded directly one on top of the other.
5 . The cell vent of claim 1 , wherein the first layer and the second layer are arranged separately from one another.
6 . The cell vent of claim 1 , wherein the second layer is configured to resist a smaller maximum gas pressure in the electrochemical energy store than the first layer.
7 . The cell vent of claim 1 , wherein the second layer comprises an inlay of a second plastic, which has a multiplicity of openings closed by the first plastic.
8 . The cell vent of claim 7 , wherein the first plastic has a lower temperature resistance than the second plastic.
9 . A method for manufacturing a cell vent for an electrochemical energy store, comprising: a first layer comprising a metal; and a second layer comprising a first plastic, wherein the first layer and the second layer being arranged lying one behind the other with respect to a pressure differential at the cell vent, and wherein the first layer has a predetermined breaking point comprising a third plastic, the method comprising:
punching out the first layer from a first sheet;
punching out the second layer from a second sheet;
closing an opening in a cell housing for an electrochemical energy store by means of the first layer and the second layer, the second layer being arranged between the first layer and an interior of the cell housing.
10 . An electrochemical energy store, comprising:
a cell vent, comprising
a first layer comprising a metal; and
a second layer comprising a first plastic;
wherein the first layer and the second layer being arranged lying one behind the other with respect to a pressure differential at the cell vent; and
wherein the first layer has a predetermined breaking point comprising a third plastic.
11 . A means for transport comprising a cell vent for an electrochemical energy store, the cell vent comprising:
a first layer comprising a metal; and
a second layer comprising a first plastic;
wherein the first layer and the second layer being arranged lying one behind the other with respect to a pressure differential at the cell vent; and
wherein the first layer has a predetermined breaking point comprising a third plastic.