DE102020204436A1 - Valve device and electrochemical system - Google Patents

Abstract

In order to provide a valve device by means of which both an overpressure and a negative pressure in an interior of a container can be compensated and which can be produced as simply as possible, it is proposed that the valve device have an adapter element, a first valve element, a second valve element, a first membrane and / or comprises a second membrane, wherein the first valve element blocks a fluid inlet opening of the adapter element in a closed state and in an open state releases the fluid inlet opening for the inflow of fluid from the surroundings of the valve device into an interior of the container and wherein the second valve element a fluid outlet opening of the The adapter element blocks in a closed state and, in an open state, releases the fluid outlet opening for fluid to flow out of the interior of the container into the surroundings of the valve device.

Description

The present invention relates to a valve device, in particular for regulating pressure in an electrochemical system.

The invention also relates to an electrochemical system.

Valve devices are from the EP 2 815 637 A1 known.

The present invention is based on the object of providing a valve device by means of which both an overpressure and a negative pressure in an interior of a container can be compensated and which can be produced as simply as possible.

This object is achieved according to the invention by a valve device according to the independent claim directed to a valve device.

The valve device is particularly suitable for regulating pressure in an electrochemical system.

The electrochemical system is, for example, a battery store and / or accumulator store, which comprises one or more battery cells and / or accumulator cells. The one or more battery cells and / or accumulator cells are preferably lithium ion cells.

The electrochemical system is preferably used in vehicles.

The valve device preferably comprises an adapter element for fixing the valve device to a container, the adapter element having a fluid outlet opening and a fluid inlet opening.

It can be advantageous if the valve device comprises a first valve element which blocks the fluid inlet opening of the adapter element in a closed state and which, in an open state, partially or completely releases the fluid inlet opening for fluid to flow in from the surroundings of the valve device into an interior of the container.

The environment of the valve device is preferably an external environment of the valve device that faces away from and / or is separated from the interior of the container. In particular, when the first valve element and / or the second valve element are in a closed state, the surroundings of the valve device are fluidically separated and / or separated from the interior of the container.

It can be favorable if the valve device comprises a second valve element which blocks the fluid outlet opening of the adapter element in a closed state and which in an open state partially or completely releases the fluid outlet opening for fluid to flow out of the interior of the container into the surroundings of the valve device.

The valve device preferably comprises a membrane, in particular a first membrane, which is arranged between the surroundings of the valve device and the first valve element, in particular along a first flow direction and / or a main flow direction of the fluid flowing into the interior of the container.

In particular, the valve device comprises a membrane, in particular a second membrane, which is arranged between the second valve element and the surroundings of the valve device, in particular along a second flow direction and / or a main flow direction of the fluid flowing out of the interior.

The first flow direction of the fluid flowing into the interior of the container is preferably a main flow direction of the fluid flowing into the interior of the container.

Alternatively, it can be provided that the first flow direction is a direction along which the fluid enters the interior of the container.

The second flow direction of the fluid flowing out of the interior space is preferably a main flow direction of the fluid flowing out of the interior space of the container.

Alternatively, it can be provided that the second flow direction is a direction along which the fluid emerges from the interior of the container.

Due to the design of the first valve element and the second valve element, both an overpressure in the interior of the container and an underpressure in the interior of the container can be compensated for.

It can be advantageous if the first valve element and the second valve element are spatially separated from one another and / or are arranged at a distance from one another. In this way, the equalization of an overpressure and the equalization of a negative pressure can be carried out independently of one another.

In particular, the fluid inlet opening and the fluid outlet opening are according to several preferred embodiments spatially separated from one another and / or openings that are different from one another.

Preferably, the fluid inlet opening and the fluid outlet opening have essentially the same shape. Alternatively, however, it can also be provided that the fluid inlet opening has a shape which deviates from a shape of the fluid outlet opening. In particular, parameters of the respective pressure compensation can be set by selecting the shape and / or cross-sectional area of the fluid inlet opening and the fluid outlet opening.

The first valve element preferably forms a pressure-increasing valve element, by means of which a pressure in the interior of the container can be increased and / or is increased.

If the first valve element is brought into an open state, it preferably fulfills an inhalation function.

The second valve element preferably forms a pressure reduction valve element, by means of which a pressure in the interior of the container can be reduced and / or is reduced.

If the second valve element is brought into the open state, an exhalation function in particular is fulfilled as a result.

The valve device preferably forms a breathing element by means of which the pressure in the interior of the container can be controlled and / or regulated and / or adjusted.

Both opening of the first valve element and opening of the second valve element are preferably reversible. Bursting elements to compensate for an overpressure in the interior of the container, which can only be used once, are preferably dispensable.

By means of the first valve element and / or the second valve element, a stepless regulation of the pressure in the interior of the container is preferably implemented. In particular, a self-regulation of the pressure in the interior of the container is formed by the first valve element and / or the second valve element. For example, the pressure in the interior of the container can be adjusted by the first valve element and / or the second valve element itself.

Due to temperature differences and / or height differences, pressure differences can arise between the pressure in the interior of the container, in particular the container of the electrochemical system, and the pressure in the vicinity of the valve device. The container can be destroyed and / or damaged by pressure differences that exist over a longer period of time. The combination of the first valve element and the second valve element makes it possible in particular to compensate for pressure differences between the pressure in the interior of the container and the pressure in the vicinity of the valve device. In this way, the service life of a container containing a valve device, in particular of an electrochemical system, can be extended.

In particular, the second valve element can also be used to remove moisture from the container during operation of the electrochemical system. The moisture can form, for example, through condensation of gaseous substances in the interior of the container and can damage the electronics of an electrochemical system comprising the container.

The first valve element, which acts in particular on the fluid inlet opening, and the second valve element, which acts in particular on the fluid outlet opening, form a spatial separation of an overpressure compensation and a negative pressure compensation.

It can be provided that the fluid inlet opening forms part of a first pressure equalization chamber of the valve device, which is preferably formed by walls of the adapter element.

The fluid outlet opening preferably forms part of a second pressure equalization chamber of the valve device, which is in particular formed by walls of the adapter element.

The first pressure equalization chamber and the second pressure equalization chamber are preferably spatially and / or fluidly separated from one another, for example by a wall, for example a partition, of the adapter element. The wall that separates the first pressure equalization chamber and the second pressure equalization chamber preferably has a main extension plane which is arranged at least approximately parallel to an opening direction of the first valve element and / or to an opening direction of the second valve element.

According to alternative embodiments, the main extension plane of the partition is in particular arranged at least approximately perpendicular to the opening direction of the first valve element and / or to the opening direction of the second valve element.

It can be provided that the valve device forms a two-chamber system.

It can be favorable for the first membrane and the second membrane to be separate elements, in particular elements produced separately. For example, the first membrane and the second membrane are separate in terms of function, handling and / or flow guidance.

The first membrane and the second membrane are preferably spatially separated from one another and / or spaced apart.

The first membrane and the second membrane are preferably spaced apart from one another in a direction which is parallel to a main plane of extent of the first membrane and / or the second membrane.

Additionally or alternatively, it can be provided that the first membrane and the second membrane are spaced apart from one another in a height direction of the valve device which is at least approximately perpendicular to the main plane of extent of the first membrane and / or the second membrane.

For example, the first membrane and the second membrane are arranged at different heights along the height direction of the valve device.

It can be provided that the first membrane is made from a material that differs from a material from which the second membrane is made. So the choice of material can be adaptive.

Alternatively, it can be provided that the first membrane and the second membrane are made from chemically and / or physically identical materials.

For example, the first membrane and / or the second membrane comprise a polytetrafluoroethylene (PTFE) material or are formed therefrom.

The first membrane and / or the second membrane are preferably cohesively and / or positively and / or non-positively connected to the adapter element.

The first membrane and / or the second membrane are preferably welded to the adapter element.

It can be provided that the first membrane and / or the second membrane are each fixed to the adapter element by means of a carrier element.

The one or two carrier elements preferably have one or more passage openings. For example, the one or the two carrier elements are perforated plates which have regularly arranged passage openings.

Depending on the application, it can be advantageous if the first membrane has an average thickness which differs from an average thickness of the second membrane. Alternatively, it can be provided that the first membrane and the second membrane have at least approximately identical mean thicknesses.

The first membrane and the second membrane are preferably elements that are independent of one another.

It can be advantageous if an opening direction of the first valve element and an opening direction of the second valve element are at least approximately parallel to one another and / or opposite to one another.

The opening direction of the first valve element is preferably at least approximately parallel to the first flow direction of the fluid which, when the first valve element is open, flows from the surroundings of the valve device into the interior of the container.

In particular, the opening direction of the first valve element is at least approximately parallel to a central axis of the first valve element.

According to further embodiments, the opening direction of the first valve element is at least approximately perpendicular to the central axis of the first valve element.

The opening direction of the second valve element is preferably at least approximately parallel to the second flow direction of the fluid which, when the second valve element is open, flows from the interior of the container into the vicinity of the valve device.

The opening direction of the second valve element is in particular at least approximately parallel to a central axis of the second valve element.

According to further embodiments, the opening direction of the second valve element is at least approximately perpendicular to the central axis of the second valve element.

It can be advantageous if the first valve element has a flap element, the flap element being pressed in a closed state of the first valve element by a spring element of the first valve element against a wall of the adapter element having the fluid inlet opening, so that the fluid inlet opening is blocked.

In particular, the second valve element has a flap element, the flap element being pressed by a spring element of the second valve element against a wall of the adapter element having the fluid outlet opening in a closed state of the second valve element, so that the fluid outlet opening is blocked.

It can be advantageous if the flap element of the first valve element, when the pressure falls below a critical pressure in the interior of the container and / or exceeds a critical pressure in the vicinity of the valve device, against a spring force of the spring element of the first valve element from the wall of the having the fluid inlet opening Adapter element can be pushed away and / or is pushed away.

In particular, the flap element of the second valve element can be pushed away from the wall of the adapter element having the fluid outlet opening against a spring force of the spring element of the second valve element against a spring force of the spring element of the second valve element when a critical pressure in the interior of the container is exceeded and / or when a critical pressure is undershot in the vicinity of the valve device and / or is pushed away.

The flap element of the first valve element and / or the flap element of the second valve element are preferably at least approximately trapezoidal and / or have at least approximately a triangular shape with cut corners.

The flap element of the first valve element and / or the flap element of the second valve element preferably each form wings. The use of installation space can thus be optimized.

Alternatively, it can be provided that the flap element of the first valve element and / or the flap element of the second valve element are at least approximately oval or circular.

The fluid inlet opening preferably has the same shape as the flap element of the first valve element, wherein in particular a length and / or a diameter of the fluid inlet opening at each point of an outer limitation thereof is about 5% or more, for example about 10% or more, smaller is as a length and / or a diameter of the flap element of the first valve element.

The fluid outlet opening preferably has the same shape as the flap element of the first valve element, wherein in particular a length and / or a diameter of the fluid outlet opening at each point of an outer boundary thereof is about 5% or more, in particular about 10% or more, smaller is as a length and / or a diameter of the flap element of the second valve element.

Preferably, a cross-sectional area of the fluid inlet opening and / or a cross-sectional area of the fluid outlet opening can be adapted or adapted to a respective prevailing requirements and / or an expected minimum or maximum pressure in the interior of the container.

• - zumindest näherungsweise trapezförmig und/oder dreieckförmig mit abgeschnittenen Ecken;
• - oval;
• - rechteckförmig; oder
• - kreisförmig.

It can be favorable if the fluid inlet opening and / or the flap element of the first valve element have one of the following shapes:

• - At least approximately trapezoidal and / or triangular with cut corners;
• - oval;
• - rectangular; or
• - circular.

• - zumindest näherungsweise trapezförmig und/oder dreieckförmig mit abgeschnittenen Ecken;
• - oval;
• - rechteckförmig; oder
• - kreisförmig.

It can be advantageous if the fluid outlet opening and / or the flap element of the second valve element have one of the following shapes:

• - At least approximately trapezoidal and / or triangular with cut corners;
• - oval;
• - rectangular; or
• - circular.

It can be provided that the cross-sectional area of the fluid inlet opening deviates from the cross-sectional area of the fluid outlet opening in terms of shape and / or surface area.

For example, the fluid inlet opening has a smaller cross-sectional area and / or a different shape than the fluid outlet opening.

The critical pressure, above or below which the respective valve element changes to an open state, can be adjusted, in particular, depending on the spring force of the spring element.

For example, by selecting a spring element with a desired spring force, a minimum opening pressure at which the first valve element changes to the open state and / or a minimum opening pressure at which the second valve element changes to the open state can be set and / or adjusted.

By selecting the spring element, tightness of the first valve element and / or the second valve element can be set and / or guaranteed.

For example, the flap element of the first valve element is pressed inward against the spring force of the spring element when the pressure in the interior of the container falls below a critical level and / or when a critical pressure in the vicinity of the valve device is exceeded, the first valve element being brought into the open state in particular will. The fluid inlet opening is partially or completely released as a result.

The flap element of the second valve element is preferably pressed outwards against the spring force of the spring element when a critical pressure in the interior of the container is exceeded and / or when a critical pressure is undershot in the vicinity of the valve device, the second valve element being brought into the open state . The fluid outlet opening is thus partially or completely released.

It can be advantageous if the spring element of the first valve element is a spiral spring and / or tension spring which is clamped and / or held in tension between an outside of the flap element of the first valve element facing away from the interior and a projection of the adapter element. The projection of the adapter element is arranged in particular on a side of the adapter element facing away from the interior of the container.

It can be provided that the spring element of the second valve element is a spiral spring and / or tension spring, which is clamped and / or held in tension between an inside of the flap element of the second valve element facing the interior space and a projection of the adapter element. The projection of the adapter element is preferably arranged on a side of the adapter element facing the interior of the container.

For example, a main direction of extent of the spring element of the first valve element and / or a main direction of extent of the spring element of the second valve element runs obliquely to the opening direction of the respective valve element.

It can be advantageous if the flap element of the first valve element is fixed to the adapter element by means of one or more hinge elements.

For example, the flap element of the first valve element is connected by means of one or more hinge elements to a side of the adapter element facing the partition or to the partition of the adapter element itself.

It can be advantageous if the flap element of the second valve element is fixed to the adapter element by means of one or more hinge elements.

For example, the flap element of the second valve element is connected by means of one or more hinge elements to a side of the adapter element facing the partition or to the partition of the adapter element itself.

It can be favorable if a main extension plane of a wall of the adapter element, in which the fluid inlet opening is arranged, is arranged at least approximately perpendicular to the first flow direction of the fluid flowing into the interior. A flap element of the first valve element is preferably pivotable about a pivot axis which is arranged at least approximately perpendicular to the first flow direction of the fluid flowing into the interior.

It can be favorable if a main extension plane of a wall of the adapter element, in which the fluid outlet opening is arranged, is arranged at least approximately perpendicular to the second flow direction of the fluid flowing out of the interior. In particular, a flap element of the second valve element can be pivoted about a pivot axis which is arranged at least approximately perpendicular to the second flow direction.

The flap element of the first valve element is preferably arranged on a side of a wall of the adapter element facing the interior of the container in which the fluid inlet opening is arranged. In particular, the flap element of the first valve element is fixed and / or held on the adapter element by means of a tension spring element. In this case, the flap element of the first valve element is held in the closed state, in particular due to a tensile force of the tension spring element.

In particular, a flap element of the second valve element is arranged on a side facing away from the interior of the container of a wall of the adapter element in which the fluid outlet opening is arranged.

The flap element of the second valve element is preferably fixed and / or held on the adapter element by means of a tension spring element. In this case, the flap element of the second valve element is held in the closed state, in particular due to a tensile force of the tension spring element.

The wall of the adapter element in which the fluid inlet opening is arranged is preferably the same wall of the adapter element in which the fluid outlet opening is arranged.

Alternatively, it can be provided that the fluid inlet opening and the fluid outlet opening are arranged in spatially separate and / or spaced apart walls of the adapter element.

A first wall in which the fluid inlet opening is arranged can be arranged at a different height with respect to the first flow direction and / or the second flow direction than a second wall in which the fluid outlet opening is arranged.

According to a further embodiment it can be provided that a main extension plane of a wall of the adapter element, in which the fluid inlet opening is arranged, is arranged at least approximately parallel to a main flow direction of the fluid flowing into the interior. In particular, a flap element of the first valve element can be pivoted about a pivot axis which is arranged at least approximately parallel to the main flow direction of the fluid flowing into the interior.

The main flow direction of the fluid flowing into the interior space is preferably at least approximately perpendicular to the first flow direction along which the fluid enters the interior space of the container.

In particular, the fluid flows along an angled flow path.

It can be favorable if a main extension plane of a wall of the adapter element, in which the fluid outlet opening is arranged, is arranged at least approximately parallel to a main flow direction of the fluid flowing out of the interior. In particular, the flap element of the second valve element can be pivoted about a pivot axis which is arranged at least approximately parallel to the main flow direction of the fluid flowing out of the interior.

The main flow direction is preferably at least approximately perpendicular to the second flow direction along which the fluid emerges from the interior of the container.

It can be provided that the adapter element has, in addition to the fluid inlet opening, a further opening which is arranged in a wall whose main plane of extent is arranged at least approximately parallel to the first flow direction of the fluid flowing into the interior.

In addition or as an alternative, it can be provided that the adapter element has a further opening which is arranged in a wall, the main plane of which is arranged at least approximately parallel to the second flow direction of the fluid flowing out of the interior.

In particular in embodiments in which a main extension plane of the wall of the adapter element, in which the fluid inlet opening is arranged, is arranged at least approximately parallel to the main flow direction of the fluid flowing into the interior, the flap element of the first valve element is preferably against the by a compression spring element of the first valve element Pressed wall of the adapter element, which has the fluid inlet opening. The fluid inlet opening is preferably blocked.

In particular, in embodiments in which a main extension plane of the wall of the adapter element, in which the fluid outlet opening is arranged, is arranged at least approximately parallel to the main flow direction of the fluid flowing out of the interior, the flap element of the second valve element is preferably against the by a compression spring element of the second valve element Pressed wall of the adapter element, which has the fluid outlet opening. The fluid outlet opening is preferably blocked.

It can be advantageous if the first valve element comprises a slot element or is formed therefrom. In particular, when the pressure falls below a critical pressure in the interior of the container and / or when a critical pressure in the vicinity of the valve device is exceeded, the sealing lips of the slot element separate and open an opening.

Additionally or alternatively, the second valve element comprises a slot element or is formed therefrom. In particular, when the second valve element is in the closed state, sealing lips of the slot element bear against one another. For example, when a critical pressure in the interior of the container is exceeded and / or when the pressure falls below a critical pressure in the vicinity of the valve device, the sealing lips of the slot element separate and open an opening.

It can be advantageous if the slot element of the first valve element and / or the slot element of the second valve element comprise or are formed from a silicone material. For example, the slot element of the first valve element and / or the slot element of the second valve element are formed from the same material.

The slot element of the first valve element and / or the slot element of the second valve element are preferably connected to the adapter element with a material fit and / or force fit and / or form fit.

For example, the slot element of the first valve element and / or the slot element of the second valve element are let into and / or pushed onto an edge of the fluid inlet opening or fluid outlet opening.

It can be advantageous if the first valve element comprises a slot element or is formed therefrom, with sealing lips of the slot element protruding towards the interior of the container. For example, the sealing lips extend away from the wall having the fluid inlet opening into the interior of the container.

It can be advantageous if the second valve element comprises a slot element or is formed therefrom, with sealing lips of the slot element protruding away from the interior of the container. For example, the sealing lips extend from the wall having the fluid outlet opening and away from the interior of the container.

For example, the slot element of the first valve element and / or the slot element of the second valve element each comprise two sealing lips which are connected to one another at their ends, in particular such that a slot is formed.

It can be favorable if the first valve element comprises a flip-over element which blocks the fluid inlet opening in a closed state of the first valve element and which when the pressure falls below a critical pressure in the interior of the container and / or exceeds a critical pressure in the vicinity of the valve device folds in the direction of the interior, whereby the fluid inlet opening is partially or completely released.

Additionally or alternatively, it can be provided that the second valve element comprises a flip-over element which blocks the fluid outlet opening in a closed state of the second valve element and which when a critical pressure in the interior of the container is exceeded and / or when a critical pressure in the container is undershot Environment of the valve device from the interior, in particular to the outside, folds away, whereby the fluid outlet opening is partially or completely released.

It can be provided that different variants of valve elements are combined with one another in a valve device.

Alternatively, it can be provided that the first valve element and the second valve element are valve elements of the same valve type and / or the same variant.

The valve device preferably comprises a cover element which covers the valve device on a side facing the surroundings of the valve device and which is positively and / or non-positively and / or materially connected to the adapter element. In particular, the cover element comprises one or more openings.

It can be favorable if the first membrane and / or the second membrane are each arranged on a carrier plate.

According to a preferred embodiment, the fluid inlet opening and the fluid outlet opening are identical and / or are formed by a single opening in the adapter element.

It can be advantageous if, in embodiments in which the fluid inlet opening and the fluid outlet opening are formed by the same opening of the adapter element, this opening is partially released when the first valve element changes into an open state.

In particular, the opening which forms both the fluid inlet opening and the fluid outlet opening is partially released when the second valve element changes into an open state.

That The first valve element and the second valve element are preferably coaxial and / or have the same central axis. In particular, the first valve element and the second valve element are arranged one inside the other at the same height with respect to a central axis of the first valve element and / or a central axis of the second valve element.

The central axis of the first valve element and / or the central axis of the second valve element and / or the central axis of the valve device are preferably identical.

The first valve element is preferably arranged radially on the inside relative to the second valve element. For example, the second valve element surrounds the first valve element in a radial direction with respect to a central axis of the valve device.

In embodiments in which the fluid inlet opening and the fluid outlet opening are formed by the same opening, the valve device preferably has exactly one membrane.

It can be favorable if the membrane comprises a polytetrafluoroethylene (PTFE) material or is formed from it.

In particular, the membrane is cohesively and / or positively and / or non-positively connected to the adapter element.

It can be favorable if the membrane is fixed to the adapter element by means of a carrier element.

The opening which forms the fluid inlet opening and the fluid outlet opening is preferably at least approximately circular in a cross section taken perpendicular to an opening direction of the first valve element and / or to an opening direction of the second valve element.

It can be advantageous if the first valve element has a first spring device by means of which a plate element of the first valve element is and / or is pressed against a ring element of the second valve element in a closed state of the first valve element and thus closes an opening formed by the ring element.

The plate element is preferably at least approximately disk-shaped and / or plate-shaped. In particular, a main extension plane of the plate element is arranged at least approximately perpendicular to the opening direction of the first valve element and / or the opening direction of the second valve element. Due to the disk shape and / or the disk shape, the disk element can form an increased fluid resistance.

It can be advantageous if the first valve element has a stabilization section which extends away from the plate element in the direction of the interior of the container. The plate element and the stabilization section are preferably produced as a one-piece component.

It can be favorable if the second valve element has a second spring device, by means of which the ring element of the second valve element is and / or is pressed against the adapter element in a closed state of the second valve element.

The first spring device and / or the second spring device are preferably spiral springs.

The opening direction of the first valve element and / or the opening direction of the second valve element are preferably at least approximately parallel to the central axis of the first valve element and / or to the central axis of the second valve element.

It can be provided that the adapter element has a plate-shaped section, the main extension plane of which is at least approximately perpendicular to the opening direction of the first valve element and / or the opening direction of the second valve element.

Preferably, on a side of the plate-shaped section facing away from the interior of the container, a hollow-cylindrical section of the adapter element extends away from the plate-shaped section of the adapter element.

It can be favorable if the hollow cylindrical section surrounds the opening which forms the fluid inlet opening and the fluid outlet opening.

It can be advantageous if the adapter element has a central section which is arranged radially on the inside with respect to the hollow cylindrical section and / or is connected to a base body of the adapter element by means of one or more support elements of the adapter element.

For a stabilized and / or guided movement of the first valve element, it can be advantageous if the stabilization section of the first valve element is received by the central section of the adapter element in a closed state of the first valve element.

It can be advantageous if the first spring device is located on the central portion of the Adapter element on the one hand and on the other hand supported on the plate element of the first valve element. The first spring device is preferably received in an in particular annular recess, for example a receiving groove, on a radially outer side of the central section.

The second spring device is preferably supported on the ring element of the second valve element on the one hand and on a carrier element of the valve device on the other hand.

In particular, the second spring device is received in a radially outer, in particular annular, recess, for example a receiving groove, of the ring element.

As an alternative to the second spring device being supported on the carrier element of the valve device, provision can be made for the second spring device to be supported on an end of the adapter element facing away from the interior, for example in a receiving groove provided for this purpose.

It can be advantageous if, when the pressure falls below a critical pressure in the interior of the container and / or exceeds a critical pressure in the vicinity of the valve device, the plate element is pressed against a spring force of the first spring device in the direction of the interior, and thus an, in particular, annular gap-shaped element Releases the opening between the plate element of the first valve element and the ring element of the second valve element, whereby in particular the first valve element comes into an open state.

In particular, an inhalation function of the valve device is activated and / or used.

While the first valve element comes into the open state, the second valve element is preferably kept in a closed state.

Preferably, if a critical pressure in the interior of the container is exceeded and / or if the pressure falls below a critical pressure in the vicinity of the valve device, the ring element of the second valve element, in particular together with the plate element of the first valve element, is removed from the interior against a spring force of the second spring device of the container is pressed away and thus an, in particular annular gap-shaped, opening between the ring element and the adapter element is released, whereby in particular the second valve element comes into an open state.

In particular, an exhalation function of the valve device is activated and / or used.

During a movement of the second valve element into the open state, a position of the plate element of the first valve element relative to the ring element of the second valve element preferably remains unchanged.

Preferably, either a fluid flow from the interior of the container into the surroundings of the valve device (exhalation function) or a fluid flow from the surroundings of the valve device into the interior of the container (inhalation function) can be formed and / or formed temporally separated.

• - das Tellerelement des ersten Ventilelements; und/oder
• - das Ringelement des zweiten Ventilelements; und/oder
• - die erste Federvorrichtung des ersten Ventilelements; und/oder
• - die zweite Federvorrichtung des zweiten Ventilelements.

It can be advantageous if two or more of the following elements have the same central axis:

• - The plate element of the first valve element; and or
• - the ring element of the second valve element; and or
• the first spring device of the first valve element; and or
• - The second spring device of the second valve element.

In particular, two or more of the named elements are arranged one inside the other and / or surround one another along a radial direction with respect to the central axis of the valve device.

The present invention also relates to an electrochemical system.

In this regard, the invention is based on the object of providing an electrochemical system in which a pressure in an interior of a container of the electrochemical system can be regulated.

According to the invention, this object is achieved by an electrochemical system according to the independent claim directed to an electrochemical system.

The electrochemical system comprises one or more valve devices according to the invention.

The one or more valve devices are preferably fixed on and / or in a wall of the container, in particular a housing of the electrochemical system, in particular positively and / or non-positively and / or materially.

• - durch einen Bajonettverschluss; und/oder
• - durch eine Verschraubung; und/oder
• - durch eine Klemmverbindung; und/oder
• - durch eine Clipverbindung.

Vorteilhaft kann es sein, wenn die eine oder die mehreren Ventilvorrichtungen mittels eines Dichtelements an und/oder in der Wandung festgelegt sind. So kann eine Dichtigkeit gegenüber einem Eindringen von Partikeln oder anderen Verschmutzungen optimiert sein.For example, the one or more valve devices are fixed on and / or in the wall of the container as follows:

• - by a bayonet lock; and or
• - through a screw connection; and or
• - by a clamp connection; and or
• - by a clip connection.

It can be advantageous if the one or more valve devices are fixed on and / or in the wall by means of a sealing element. In this way, tightness against the ingress of particles or other contaminants can be optimized.

The electrochemical system preferably has one or more features and / or one or more advantages of the valve device according to the invention.

Further preferred features and / or advantages of the invention are the subject matter of the following description and the graphic representation of exemplary embodiments.

• 1 eine schematische perspektivische Darstellung einer ersten Ausführungsform einer Ventilvorrichtung, bei welcher ein Adapterelement, in welchem ein erstes Ventilelement und ein zweites Ventilelement aufgenommen sind, mit einem Abdeckelement zu einer Umgebung der Ventilvorrichtung hin abgedeckt ist, in einem geschlossenen Zustand der Ventilelemente;
• 2 eine schematische perspektivische Schnittdarstellung durch die Ventilvorrichtung aus 2;
• 3 eine schematische perspektivische Darstellung der Ventilvorrichtung aus den 1 und 2 von unten betrachtet, so dass in entgegengesetzte Richtungen öffnende Klappenelemente zu sehen sind;
• 4 eine schematische perspektivische Darstellung einer zweiten Ausführungsform einer Ventilvorrichtung, bei welcher eine Fluideinlassöffnung und eine Fluidauslassöffnung jeweils in Wandungen des Adapterelements angeordnet sind, die zumindest näherungsweise senkrecht zu einer Haupterstreckungsebene der Ventilvorrichtung angeordnet sind, in einem geschlossenen Zustand der Ventilelemente;
• 5 eine vergrößerte Darstellung des in 4 mit V bezeichneten Bereichs;
• 6 eine schematische perspektivische Darstellung einer dritten Ausführungsform einer Ventilvorrichtung, bei welcher das erste Ventilelement und das zweite Ventilelement Lippenventile sind und/oder jeweils ein Schlitzelement umfassen, wobei ein Viertel der Ventilvorrichtung nicht dargestellt ist, in einem geschlossenen Zustand der Ventilelemente;
• 7 eine schematische perspektivische Darstellung eines Schlitzelements der Ventilvorrichtung aus 6 in einem geschlossenen Zustand, bei welchem zwei Dichtlippen zueinander geneigt ausgebildet sind und an ihren Enden verbunden sind, so dass ein linienförmiger Schlitz gebildet ist;
• 8 eine schematische perspektivische Schnittdarstellung des in 6 nicht dargestellten Bereichs, bei welcher zu sehen ist, dass die zwei Dichtlippen jeweils konkav bezüglich einer Ebene ausgebildet sind, welche durch den Schlitz des Schlitzelements verläuft;
• 9 eine schematische perspektivische Darstellung einer vierten Ausführungsform einer Ventilvorrichtung, bei welcher ein Teilschnitt durch das erste Ventilelement gezeigt ist, wobei ein Umklappelement des ersten Ventilelements kraftschlüssig und/oder formschlüssig zwischen einem Lamellenelement und einem Deckelelement des ersten Ventilelements aufgenommen ist, in einem geschlossenen Zustand der Ventilelemente;
• 10 eine vergrößerte Darstellung eines in 9 mit X bezeichneten Bereichs;
• 11 eine schematische perspektivische Darstellung einer Unterseite der Ventilvorrichtung aus den 9 und 10, welche in einem montierten Zustand einem Innenraum eines Behälters zugewandt ist;
• 12 eine schematische perspektivische Darstellung des zweiten Ventilelements der Ventilvorrichtung aus den 9 bis 11;
• 13 eine schematische perspektivische Darstellung einer fünften Ausführungsform einer Ventilvorrichtung, bei welcher das erste Ventilelement und das zweite Ventilelement durch zwei ineinander angeordnete Elemente gebildet sind und durch Kompression zweier Federvorrichtungen längs einer axialen Richtung einer Mittelachse der Ventilvorrichtung relativ zueinander bewegbar sind;
• 14 eine schematische perspektivische Darstellung der Ventilvorrichtung aus 13 von unten betrachtet, so dass Verbindungshülsen zu sehen sind, welche insbesondere in das Adapterelement eingepresst sind und/oder werden;
• 15 eine Explosionsdarstellung der Ventilvorrichtung aus den 13 und 14; und
• 16 eine schematische Schnittdarstellung der Ventilvorrichtung aus den 13 bis 15 längs einer in 15 mit XVI bezeichneten Ebene, wobei sich das erste Ventilelement und das zweite Ventilelement in einem geschlossenen Zustand befinden.

Show it:

• 1 a schematic perspective illustration of a first embodiment of a valve device, in which an adapter element, in which a first valve element and a second valve element are received, is covered with a cover element to the surroundings of the valve device, in a closed state of the valve elements;
• 2 a schematic perspective sectional view through the valve device 2 ;
• 3 a schematic perspective illustration of the valve device from FIG 1 and 2 viewed from below so that flap elements opening in opposite directions can be seen;
• 4th a schematic perspective illustration of a second embodiment of a valve device, in which a fluid inlet opening and a fluid outlet opening are each arranged in walls of the adapter element, which are arranged at least approximately perpendicular to a main extension plane of the valve device, in a closed state of the valve elements;
• 5 an enlarged view of the in 4th area labeled V;
• 6th a schematic perspective illustration of a third embodiment of a valve device, in which the first valve element and the second valve element are lip valves and / or each comprise a slit element, a quarter of the valve device not being shown, in a closed state of the valve elements;
• 7th a schematic perspective illustration of a slot element of the valve device 6th in a closed state, in which two sealing lips are inclined to one another and are connected at their ends, so that a linear slot is formed;
• 8th a schematic perspective sectional illustration of the in 6th area, not shown, in which it can be seen that the two sealing lips are each formed concave with respect to a plane which runs through the slot of the slot element;
• 9 a schematic perspective illustration of a fourth embodiment of a valve device, in which a partial section through the first valve element is shown, a flip-over element of the first valve element being positively and / or positively received between a lamellar element and a cover element of the first valve element, in a closed state of the valve elements ;
• 10 an enlarged view of an in 9 area denoted by X;
• 11 a schematic perspective illustration of an underside of the valve device from FIG 9 and 10 which faces an interior of a container in an assembled state;
• 12th a schematic perspective illustration of the second valve element of the valve device from FIG 9 until 11 ;
• 13th a schematic perspective illustration of a fifth embodiment of a valve device, in which the first valve element and the second valve element are formed by two elements arranged one inside the other and can be moved relative to one another by compression of two spring devices along an axial direction of a central axis of the valve device;
• 14th a schematic perspective illustration of the valve device from 13th viewed from below, so that connecting sleeves can be seen which are and / or are being pressed into the adapter element in particular;
• 15th an exploded view of the valve device from FIG 13th and 14th ; and
• 16 a schematic sectional view of the valve device from FIG 13th until 15th along one in 15th with XVI designated plane, wherein the first valve element and the second valve element are in a closed state.

Identical or functionally equivalent elements are denoted by the same reference symbols in all figures.

One in the 1 until 3 The valve device illustrated and designated as a whole by 100 preferably forms part of an electrochemical system which is not shown as a whole in the drawing 102 . The electrochemical system 102 is particularly suitable for use in vehicles.

Preferably the electrochemical system comprises 102 several electrochemical units, which in particular include battery cells and / or accumulator cells, for example lithium ion batteries.

For example, there are one or more valve devices 100 in opposing walls of the electrochemical system designed as narrow sides 102 let in and / or set fluid-tight to this.

The walls preferably form part of a housing of the electrochemical system 100 . The housing preferably forms a container 104 , which has an interior 106 surrounds.

The valve device 100 preferably comprises an adapter element 108 , by means of which the valve device 100 on the container 104 is fixed. For example, the adapter element 108 by means of a screw connection and / or a bayonet lock, in particular by means of a sealing element. In this way, particles or other contaminants can penetrate via a connection point of the valve device 100 to the container 104 be avoided.

In addition or as an alternative, it can be provided that the adapter element 108 by means of a clip connection on and / or in the wall of the container 104 is fixed.

The adapter element 108 is preferably at least approximately cuboid. Alternatively, it can be provided that the adapter element 108 in a parallel to a main plane of extent of the wall of the container 104 taken cross-section is at least approximately oval.

It can be advantageous if the walls of the adapter element 108 two spatially and / or fluidically separate pressure compensation chambers 110a , 110b form. A separation of a first pressure equalization chamber 110a and a second pressure equalization chamber 110b is preferably through a partition 112 of the adapter element 108 educated.

Through the pressure equalization chambers 110a , 110b a two-chamber system is preferably designed.

It can be beneficial if the adapter element 108 a first wall 114a has, which in the first pressure equalization chamber 110a is arranged and / or has a main extension plane which is at least approximately perpendicular to a main extension plane of the partition 112 is arranged.

The adapter element preferably comprises 108 a second wall 114b , which in the second pressure equalization chamber 110b is arranged and / or has a main extension plane which is at least approximately perpendicular to a main extension plane of the partition 112 is arranged.

The first wall 114a of the adapter element 108 preferably has a fluid inlet port 116 on, through which in an open state of a first valve element 118 the valve device 100 Fluid from an environment 120 the valve device 100 in the interior 106 of the container 104 flows in or can flow in.

The fluid inlet port 116 is in the in the 1 until 3 illustrated closed state of the first valve element 118 by a flap element 122 of the first valve element 118 blocked and / or locked.

It can be advantageous if the fluid inlet opening 116 is at least approximately trapezoidal and / or at least approximately triangular with cut corners.

It can be favorable if the second wall 114b of the adapter element 108 a fluid outlet port 124 has, through which in an open state of a second valve element 126 the valve device 100 Fluid from the interior 106 of the container 104 emanates or may emanate.

In the in the 1 until 3 illustrated closed state of the second valve element 126 is the fluid outlet port 124 by a flap element 122 of the second valve element 126 blocked and / or locked.

The fluid outlet opening 124 is preferably at least approximately trapezoidal and / or at least approximately triangular with cut corners.

For an optimized pressure regulation it can be advantageous if the fluid inlet opening 116 and the fluid outlet port 124 mirror-symmetrical with respect to a plane of symmetry which is parallel to the partition wall 112 is, formed and / or arranged.

Alternatively, it can be provided that the fluid inlet opening 116 and the fluid outlet port 124 are of different sizes and / or have different shapes. For example, fluid can flow through the fluid outlet opening more quickly 124 from the interior 106 of the container 104 flow out than through the fluid inlet port 116 Fluid from the environment 120 the valve device 100 in the interior 106 of the container 104 can flow in.

It can be advantageous if the flap elements 122 at least approximately the same shape as the fluid inlet opening 116 or the fluid outlet opening 124 exhibit.

In particular, there is a cross-sectional area of the flap element 122 of the first valve element 118 larger than the fluid inlet port by about 5% or more 116 parallel to a main extension plane of the first wall 114a of the adapter element 108 .

The flap element is preferably located 122 of the first valve element 118 in the closed state of the first valve element 118 on one the fluid inlet port 116 surrounding edge area and / or is pressed against it, so that the fluid inlet opening 116 , in particular fluid-tight, is blocked.

A cross-sectional area of the flap element is preferred 122 of the second valve element 126 larger than the fluid outlet opening by about 5% or more 124 parallel to a main plane of extent of the second wall 114b of the adapter element 108 .

In particular, the flap element lies 122 of the second valve element 126 in a closed state of the second valve element 126 on one the fluid outlet opening 124 surrounding edge area of the second wall 114b of the adapter element 108 and / or is pressed against it, so that the fluid outlet opening is blocked, in particular in a fluid-tight manner.

It can be advantageous if the flap element 122 of the first valve element 118 on one of the interior 106 of the container 104 facing side of the first wall 114a is arranged.

The flap element 122 of the second valve element 126 is preferably on one of the interior 106 of the container 104 facing away from the second wall 114b arranged.

Preferably the flap element 122 of the first valve element 118 and / or the flap element 122 of the second valve element 126 pivoted.

In particular, there is a pivot axis of the flap element 122 of the first valve element 118 and / or a pivot axis of the flap element 122 of the second valve element 126 at least approximately perpendicular to a first flow direction 128 arranged along which in an open state of the first valve element 118 Fluid from the environment 120 the valve device 100 in the interior 106 of the container 104 flows in.

For example, the flap element 122 of the first valve element 118 and the flap element 122 of the second valve element 126 Wing-shaped and / or to mutually different sides relative to the adapter element 108 movable.

The pivot axes of the flap element are preferably 122 of the first valve element 118 and / or the pivot axis of the flap element 122 of the second valve element 126 at least approximately perpendicular to a second flow direction 130 arranged along which in an open state of the second valve element 126 Fluid from the interior 106 of the container 104 in the nearby areas 120 the valve device flows out.
The first direction of flow 128 is preferably a main flow direction of the fluid. The second direction of flow 130 is preferably a main flow direction of the fluid.

The first direction of flow 128 and the second direction of flow 130 are preferably arranged at least approximately parallel to one another and / or opposite one another.

The opening direction 144 of the first valve element 118 and the opening direction 146 of the second valve element 126 are preferably at least approximately parallel to one another and / or opposite one another.

For example, the flap element 122 of the first valve element 118 by means of one or more, in the present case two, hinge elements 132 relative to the first wall 114a of the adapter element 108 pivotally fixed.

In particular, the flap element 122 of the second valve element 126 by means of one or more, in the present case two, hinge elements 132 relative to the second wall 114b of the adapter element 108 pivotally fixed.

It can be favorable if the flap element 122 of the first valve element 118 and / or the flap element 122 of the second valve element 126 on one of the partition 112 facing sides of the respective pressure compensation chamber 110a , 110b by means of the hinge elements 132 are connected to the adapter element.

Alternatively it can be provided that the flap element 122 of the first valve element 118 and / or the flap element 122 of the second valve element 126 by means of the hinge elements 132 directly on the partition 112 of the adapter element 108 is fixed.

For example, each is a first part of a hinge element 132 on one of the interior 106 of the container 104 applied outside flap element 122 of the first valve element 118 set, while a second pivotably connected to the first part of the hinge element part 132 on a side of the first wall facing the partition wall 114a or the partition 112 of the adapter element 108 is fixed.

In addition or as an alternative, a first part of a hinge element is in each case 132 on one of the interior 106 of the container 104 facing inside of the flap element 122 of the second valve element 126 set, while a second, pivotably connected to the first part of the hinge element part 132 on a side of the second wall facing the partition wall 114b or the partition 112 of the adapter element 108 is fixed.

It can be advantageous if the flap element 122 of the first valve element 118 and / or the flap element 122 of the second valve element 126 a support structure 134 have, which is completely or partially surrounded by a polymer material.

To increase the tightness it can be provided that the polymer material with which the respective carrier structure 134 is surrounded, comprises or is formed from an elastomeric polymer material.

The respective support structure 134 is preferably formed from a metallic material and / or a polymer material with comparable strength.

It can be advantageous if the flap element 122 of the first valve element 118 by a spring element 136 , for example a tension spring element 138 , is held in a closed state.

For example, the spring element 136 between a ledge 140 the partition 112 of the adapter element 108 and a, for example hook-shaped, projection 142 on one of the interior 106 of the container 104 facing away from the outside of the flap element 122 of the first valve element 118 clamped.

When the pressure in the interior space falls below a critical level 106 of the container 104 and / or exceeding a critical pressure in the environment 120 the valve device 100 becomes the flap element 122 of the first valve element 118 preferably against a spring force of the spring element 136 along an opening direction 144 of the first valve element 118 towards the interior 106 of the container 104 pressed and / or pulled. The first valve element passes through this 118 in an open state in which the fluid inlet port 116 is partially or fully released.

In particular, in the open state of the first valve element 118 Fluid from the environment 120 the valve device 100 through the first pressure equalization chamber 110a in the interior 106 of the container 104 pour in.

When the pressure reaches the interior 106 of the container 104 and / or the environment 120 the valve device 100 the critical pressure again or more or less, the first valve element reverses 118 back to the closed state.

Preferably, by opening the first valve element 118 an inhalation function of the valve device 100 educated.

The critical pressure for the first valve element 118 can be done by selecting a spring element 136 can be set with a suitable spring force or is adjustable.

By choosing the spring element 136 of the first valve element 118 is preferably a minimum opening pressure of the first valve element 118 adjustable.

The flap element 122 of the second valve element 126 is preferably by a spring element 136 , in particular a tension spring element 138 , kept in a closed state.

For example, the spring element 136 between one the interior 106 of the container 104 facing ledge 140 in the partition 112 of the adapter element 108 and a, in particular hook-shaped, projection 142 on one of the interior 106 of the container 104 facing inside of the flap element 122 of the second valve element 126 clamped.

When a critical pressure in the interior space is exceeded 106 of the container 104 and / or falling below a critical pressure in the environment 120 the valve device 100 becomes the flap element 122 of the second valve element 126 preferably from the interior 106 of the container 104 along an opening direction 146 of the second valve element 126 pushed and / or pulled outwards.

The second valve element 126 thus in particular enters an open state in which the fluid outlet opening 124 is fully or partially released. So can fluid from the interior 106 of the container 104 in the nearby areas 120 the valve device 100 emanate.

When the pressure reaches the interior 106 of the container 104 and / or the environment 120 the valve device 100 the critical pressure again or less or more, the second valve element reverses 126 back to the closed state.

Preferably by opening the second valve element 126 an exhalation function of the valve device 100 educated.

The critical pressure for the second valve element 126 can by selecting a spring element 136 can be set with a suitable spring force or is adjustable.

By choosing the spring element 136 of the second valve element 126 is preferably a minimum opening pressure of the second valve element 126 adjustable.

It can be favorable if the longitudinal center axes of the spring elements 136 of the first valve element 118 and the second valve element 126 at least approximately obliquely with respect to the first flow direction 128 and / or the second flow direction 130 are arranged.

The spring elements 136 are preferably coil springs. Alternatively, leaf springs can also be used as spring elements 136 can be used. There can also be different spring elements 136 for the first valve element 118 and the second valve element 126 be used.

It can be advantageous if the valve device 100 a first membrane 148 and a second membrane 150 having.

The first membrane 148 and / or the second membrane 150 serve in particular to protect the electrochemical system 102 against ingress of water and / or moisture.

The first membrane 148 and / or the second membrane 150 are preferably each on a carrier element 152 arranged.

The support elements 152 preferably each have regularly arranged passage openings. For example, the carrier elements 152 each has a hole pattern.

The first membrane 148 covers and / or preferably covers the fluid inlet opening 116 on one of the interior 106 of the container 104 facing away from the adapter element 108 .

The second membrane 150 covers and / or covers the fluid outlet opening 124 preferably on one of the interior 106 of the container 104 facing away from the adapter element 108 .

Preferably the first membrane 148 and / or the second membrane 150 cohesively and / or positively and / or non-positively with the respective carrier element 152 and / or the adapter element 108 tied together.

For example, the first membrane 148 and / or the second membrane 150 with the respective carrier element 152 and / or the adapter element 108 welded.

It can be advantageous if the first membrane 148 from the fluid inlet port 116 is arranged spaced apart. For example, the first membrane is 148 together with the carrier element 152 on one of the interior 106 of the container 104 remote end of the adapter element 108 set.

It can be advantageous if the second membrane 150 from the fluid outlet port 124 is arranged spaced apart. For example, the second membrane is 150 together with the carrier element 152 on one of the interior 106 of the container 104 remote end of the adapter element 108 set.

The first membrane 148 and / or the second membrane 150 preferably comprise or are formed from a polymer material.

For example, include the first membrane 148 and / or the second membrane 150 a Polytetrafluoroethylene (PTFE) material or are formed from it.

It can be provided that the first membrane 148 is formed from a material which of a material from which the second membrane 150 is formed, is different.

For example, is for the first membrane 148 selected a material that has a low permeability to moisture and / or water. When you "inhale", comparatively little moisture and / or water can escape from the environment 120 the valve device 100 in the interior 106 of the container 104 penetration.

For the second membrane 150 For example, a material is selected that has a high level of air permeability and / or breathability. In this way, when you "exhale", as much fluid as possible can be removed from the interior as quickly as possible 106 of the container 104 in the nearby areas 120 the valve device 100 emanate.

In addition or as an alternative, the first membrane can 148 have an average thickness perpendicular to the main plane of extent thereof, which is of an average thickness of the second membrane 150 deviates perpendicular to the main plane of extent.

Alternatively, the first membrane 148 and the second membrane 150 be formed from identical materials and / or have the same average thickness.

The first membrane 148 and the second membrane 150 are preferably through the partition 112 of the adapter element 108 spatially and / or fluidly separated from one another.

It can be beneficial if the valve device 100 a cover element 154 has, which in particular a mechanical protection of the first membrane 148 and / or the second membrane 150 and / or the first valve element 118 and / or the second valve element 126 serves.

The cover element 154 is preferably positively and / or non-positively and / or cohesively with the adapter element 108 tied together. For example, the cover element 154 on the adapter element 108 attached and / or connected to the same by means of a clip connection.

One in the 4th and 5 illustrated second embodiment of a valve device 100 essentially differs in terms of structure and function from that in the 1 until 3 illustrated first embodiment that the flap element 122 of the first valve element 118 and the flap element 122 of the second valve element 126 each by one as a compression spring element 156 formed spring element 136 is held in the closed state.

The fluid inlet port 116 is preferably in a first wall 114a of the adapter element 108 arranged, the main plane of extent at least approximately parallel to a main flow direction 129 , along which in the open state of the first valve element 118 Fluid in the interior 106 of the container 104 can flow in, arranged.

The fluid outlet opening 124 is preferably in a second wall 114b of the adapter element 108 arranged, the main plane of extent at least approximately parallel to a main flow direction 131 , along which in the open state of the second valve element 126 Fluid from the interior 106 of the container 104 can flow out, arranged.

A first flow direction is preferred 128 des in the interior 106 of the container 104 inflowing fluid at least approximately parallel to an opening direction 144 of the first valve element 118 .

The first direction of flow 128 is not identical to the main flow direction in the present case 129 des in the interior 106 of the container 104 inflowing fluid, but in particular forms an inflow direction. The main direction of flow 129 des in the interior 106 of the container 104 inflowing fluid is preferably at least approximately perpendicular to the first flow direction 128 of the fluid arranged.

A second direction of flow 130 from the interior 106 of the container 104 outflowing fluid is preferably at least approximately parallel to the opening direction 146 of the second valve element 126 arranged.

The second direction of flow 130 is not identical to the main flow direction in the present case 131 from the interior 106 of the container 104 outflowing fluids, but in particular forms an outflow direction. The main direction of flow 131 from the interior 106 of the container 104 outflowing fluid is preferably at least approximately perpendicular to the second flow direction 130 of the fluid arranged.

For example, the compression spring element 156 of the first valve element 118 at one of the fluid inlet port 116 facing side of the partition 112 of the adapter element 106 supported. In particular, the flap element 122 of the first Valve element 118 in the closed state of the first valve element 118 by means of a spring force of the compression spring element 156 from one of the partition 112 facing side from against the fluid inlet opening 124 pressed and / or pressed.

The compression spring element is preferably 156 of the second valve element 126 at one of the fluid outlet opening 124 facing side of the partition 112 of the adapter element 108 supported. In particular, the flap element 122 of the second valve element 126 in a closed state of the second valve element 126 by means of a spring force of the compression spring element 156 from one of the partition 112 facing side from against the fluid outlet opening 124 pressed and / or pressed.

The flap element 122 of the first valve element 118 and / or the flap element 122 of the second valve element 126 each preferably have a sealing plate which, in the closed state of the respective valve element 118 , 126 against the fluid inlet port 116 or the fluid outlet opening 124 pressed and / or pressed.

The sealing plate preferably comprises a polymer material, for example an elastomeric polymer material, or is formed therefrom.

For a flow guidance it can be favorable if the adapter element 108 in addition to the fluid inlet port 116 and the fluid outlet port 124 one or more, in the present case two, further openings 158 having, which is in fluid communication with the interior 106 of the container 104 produce.

The other openings 158 are preferably adjacent to the first wall 114a showing the fluid inlet port 116 has, and / or to the second wall 114b showing the fluid outlet port 124 having, arranged.

One of the further openings (not shown) 158 preferably connects the interior 106 of the container 104 fluidically with the first pressure equalization chamber 110a .

The other wider opening 158 preferably connects the interior 106 of the container 104 fluidically with the second pressure equalization chamber 110b .

• - die Fluideinlassöffnung 116; und/oder
• - die Fluidauslassöffnung 124; und/oder
• - eine oder mehrere, insbesondere sämtliche, der weiteren Öffnungen 158.

Preferably, one or more of the following openings are at least approximately oval-shaped:

• - the fluid inlet opening 116 ; and or
• - the fluid outlet opening 124 ; and or
• - One or more, in particular all, of the further openings 158 .

Even if this is in the 4th and 5 are not shown in the drawing, the valve device 100 according to the second embodiment, preferably a first membrane 148 and / or a second membrane 150 on which according to the first embodiment of the valve device 100 are formed and / or arranged.

Support elements are also preferred 150 the first membrane 148 and / or the second membrane 150 as well as a cover element 154 provided (not shown).

Incidentally, it is correct in the 4th and 5 illustrated second embodiment of a valve device 100 in terms of structure and function essentially with that in the 1 until 3 first embodiment shown, so that reference is made to the description thereof.

One in the 6th until 8th illustrated third embodiment of a valve device 100 essentially differs in terms of structure and function from that in the 1 until 3 illustrated first embodiment that the first valve element 118 a slot element 160 comprises or is formed therefrom and / or that the second valve element 126 a slot element 160 includes or is formed from it.

The fluid inlet port 116 and / or the fluid outlet opening 124 are preferably at least approximately circular.

It can be advantageous if the first wall 114a showing the fluid inlet port 116 having, and the second wall 114b showing the fluid outlet port 124 having, with respect to the first flow direction 128 and / or the second flow direction 130 are arranged at different heights.

The slot element 160 of the first valve element 118 is preferably non-positively and / or positively and / or cohesively with the first wall 114a of the adapter element 108 tied together.

The slot element 160 of the second valve element 126 is preferably non-positively and / or positively and / or cohesively with the second wall 114b of the adapter element 108 tied together.

As in particular in the 7th and 8th can be seen, point the slot elements 160 preferably two sealing lips each 162 which are arranged in particular in such a way that they form a channel which extends along the opening direction 144 , 146 of the respective valve element 118 , 126 rejuvenates.

The sealing lips 162 are in a closed state of the respective valve element 118 , 126 preferably arranged adjacent to one another, with a slot 164 between the sealing lips 162 is formed.

When the pressure in the interior space falls below a critical level 106 of the container 104 and / or exceeding a critical pressure in the environment 120 the valve device 100 becomes in particular fluid along the first flow direction 128 and / or the opening direction 144 of the first valve element 118 pressed so that the sealing lips 162 are pressed apart and so fluid in the interior 106 of the container 104 can flow in. The first valve element 118 is then in an open state. The fluid inlet port 116 is then preferably fully or partially released and fluid flows from the environment 120 the valve device 100 in the interior 106 of the container 104 .

Will the critical pressure in the area 120 the valve device 100 reached or fallen below and / or the critical pressure in the interior 106 of the container 104 reached or exceeded, the sealing lips come 162 again in contact with each other and the first valve element 118 is in the closed state again.

The sealing lips 162 of the slot element 160 of the first valve element 118 preferably protrude in the direction of the interior 106 of the container 104 from the first wall 114a of the adapter element 108 path. The sealing lips 162 preferably extend inward.

The sealing lips 162 of the slot element 160 of the second valve element 126 preferably protrude in one of the interior 106 of the container 104 pointing the way from the second wall 114b of the adapter element 108 path. The sealing lips 162 preferably extend outward.

It can be advantageous if the slot elements 160 comprise or are formed from a silicone material.

The slot element 160 of the first valve element 118 preferably works analogously to the slot element 160 of the first valve element 118 , wherein when a critical pressure is exceeded in the interior 106 of the container 104 and / or falling below a critical pressure in the environment 120 the valve device 100 the sealing lips 162 due to the fluid pressure from the inside are pressed apart and so the second valve element 126 comes into an open state. The fluid outlet opening 124 is then preferably fully or partially released and fluid flows from the interior 106 of the container 104 in the nearby areas 120 the valve device 100 .

Even if this is in the 6th until 8th are not shown in the drawing, the valve device 100 according to the third embodiment, preferably a first membrane 148 and / or a second membrane 150 on which according to the first embodiment of the valve device 100 are formed and / or arranged.

Support elements are also preferred 150 the first membrane 148 and / or the second membrane 150 as well as a cover element 154 provided (not shown).

It can be advantageous if a (not shown) first membrane 148 and a second membrane (not shown) 150 , which in particular each on a carrier element designed according to the first embodiment 152 are arranged at different heights with respect to the opening direction 144 of the first valve element 118 and / or the opening direction 146 of the second valve element 126 are arranged.

For example, the first membrane is 148 on one of the interior 106 of the container 104 facing end of the adapter element 108 arranged, the first membrane 148 especially the first pressure equalization chamber 110a covered and / or covered.

In particular, the second membrane is 150 on one of the interior 106 of the container 104 remote end of the adapter element 108 arranged, the second membrane 150 in particular the second pressure equalization chamber 110b covered and / or covered.

As an alternative to the formation of two spatially separated membranes 148 , 150 it can be provided that the valve device 100 has a one-piece membrane which both the first valve element 118 as well as the second valve element 126 covers.

Incidentally, it is correct in the 6th until 8th illustrated third embodiment of a valve device 100 in terms of structure and function essentially with that in the 1 until 3 illustrated embodiment, so that reference is made to the description thereof.

One in the 9 until 12th illustrated fourth embodiment of a valve device 100 essentially differs in terms of structure and function from that in the 1 until 3 illustrated first embodiment that the first valve element 118 and / or the second Valve element 126 one folding element each 170 exhibit.

The folding element 170 preferably comprises or is formed from a silicone material.

It can be favorable if the folding element 170 of the first valve element 118 and / or the second valve element 126 in each case an at least approximately cylindrical sealing plate 172 exhibit.

The sealing plate 172 is in particular about a along the respective opening direction 144 , 146 of the respective valve element 118 , 126 widening section with a fixing section 174 of the respective folding element 170 tied together.

It can be advantageous if the fluid inlet opening 116 and / or the fluid outlet opening 124 are at least approximately circular.

The definition section 174 is preferably between a lamellar element 176 and a flow guide element 178 of the first valve element 118 and / or the second valve element 126 recorded positively and / or positively.

When the pressure falls below a critical level within the interior 106 of the container 104 and / or exceeding a critical pressure in the environment 120 the valve device 100 is preferably the sealing plate 172 , which in the closed state of the first valve element 118 the fluid inlet port 116 blocked, towards the interior 106 of the container 104 pushed or pulled inwards. In particular, this allows fluid from the environment 120 the valve device through between slats 180 of the lamellar element 176 arranged interstices flow through and can flow through the further opening 158 in the interior 106 of the container 104 pour in. The first valve element 118 is then in the open state.

Having a pressure of the environment 120 has reached the critical pressure or is below it, the sealing plate folds 172 especially back to their original state. The first valve element 118 is then closed again.

It can be provided that the flow guide element 178 of the first valve element 118 one with respect to a central axis of the first valve element 118 centrally arranged further opening 158 having.

Additionally or alternatively, the flow guide element 178 of the second valve element 126 centrally with respect to a central axis of the second valve element 126 another opening 158 on.

Exceeds the pressure in the interior 106 of the container 104 a critical pressure and / or falls below a pressure of the environment 120 the valve device 100 the critical pressure is the sealing plate 172 of the second valve element 126 preferably from the interior 106 of the container 104 pushed outwards, leaving a flow path for fluid from the interior 106 of the container 104 through the fluid outlet port 124 via gaps between slats 180 of the lamellar element 176 and another opening 158 in the nearby areas 120 the valve device 100 is released.

The second valve element 126 is then in the open state.

When the pressure reaches the interior 106 of the container 104 reaches the critical pressure or a lower pressure and / or the pressure of the surroundings 120 the valve device 100 the critical pressure or a higher pressure, the sealing plate folds 172 especially back to the initial state again. The second valve element 126 is then in the closed state again.

It can be advantageous if the valve device 100 a cover element 154 which has one or more openings.

For example, the cover element 154 several circular and / or slot-shaped openings.

Even if this is in the 9 until 12th are not shown in the drawing, the valve device 100 according to the fourth embodiment, preferably a first membrane 148 and / or a second membrane 150 on which according to the first embodiment of the valve device 100 are formed and / or arranged.

Support elements are also preferred 152 the first membrane 148 and / or the second membrane 150 provided (not shown).

Alternatively, it can be provided that the valve device has a single membrane, which both the first valve element 118 as well as the second valve element 126 to an environment 120 the valve device 100 covers out.

Incidentally, it is correct in the 9 until 12th illustrated fourth embodiment of a Valve device 100 in terms of structure and function essentially with that in the 1 until 3 illustrated embodiment, so that reference is made to the description thereof.

It can be provided that a single valve device 100 different variants of valve elements 118 , 126 having.

One in the 13th until 16 illustrated fifth embodiment of a valve device 100 essentially differs in terms of structure and function from that in the 1 until 3 illustrated first embodiment that the fluid inlet opening 116 and the fluid outlet port 124 are identical and that the first valve element 118 and the second valve element 126 are coaxial.

The fluid inlet port 116 and the fluid outlet port 126 are preferably through a single opening, in particular at least approximately circular in cross section 115 of the adapter element 108 educated. The cross section is in particular perpendicular to the first flow direction 128 and / or the second flow direction 130 taken.

There is a single membrane 148 provided which the opening 115 , which is both the fluid inlet port 116 as well as the fluid outlet opening 124 forms, covers and / or covers.

The membrane 148 preferably comprises or is formed from a polytetrafluoroethylene (PTFE) material.

The first valve element 118 in the present case comprises a first spring device 182 , by means of which the first valve element 118 is durable and / or held in a closed state.

The first valve element 118 preferably has an at least approximately T-shaped cross section (cf. 16 ).

It can be advantageous if the first spring device 182 at one with respect to a central axis 184 radially inner central section 186 of the adapter element 108 on the one hand and on a plate element 188 of the first valve element 118 on the other hand supports.

The first spring device 182 is based in particular on one of the interior 106 facing away from the central section 186 at the central section 186 and one of the interior 106 facing side of the plate element 188 on the plate element 188 away.

The plate element 188 of the first valve element 118 is preferably at least approximately plate-shaped and / or disk-shaped and is in a parallel to a main plane of extent of a cover element 154 the valve device 100 taken cross-section at least approximately circular.

The first spring device 182 is for example a spiral spring.

In particular, the first spring device 182 and a stabilization section 190 of the first valve element 118 coaxial. For example, surrounds the first spring device 182 the stabilization section 190 of the first valve element 118 radial.

The stabilization section 190 particularly protrudes towards the interior 106 of the container 104 from the plate element 188 away and / or is integral with the plate element 188 educated.

The stabilization section 190 is preferably used to guide and / or stabilize a movement of the first valve element 118 relative to the adapter element 108 . Preferably the stabilization section is 190 in a closed state of the first valve element 118 of one in the central section 186 formed opening was added.

The adapter element 108 in the present case comprises a plate-shaped section 192 , on which preferably a connection with the wall of the container 104 is and / or is being produced.

In the present case, the adapter element comprises 108 a hollow cylindrical section 194 , which is located on one of the interior 106 of the container 104 facing away from the plate-shaped section 192 from the plate-shaped portion 192 extends away.

The hollow cylindrical section 194 preferably serves to protect and / or accommodate the first valve element 118 and / or the second valve element 124 .

The central section 186 of the adapter element 108 is present on several support elements 196 with a base body of the adapter element 108 tied together.

The support elements 196 are in the present case rib-shaped and extend radially from the central portion 186 away to the outside. Due to the rib-shaped design of the support elements 196 is preferably on the one hand a stabilization of the adapter element 108 formed and on the other hand, fluid can be between the support elements 196 flow through.

The second valve element 126 preferably has a ring element 198 which is at least approximately a hollow circular cylinder and is coaxial with the first valve element 118 is.

In a closed state of the first valve element 118 is preferably the plate element 188 of the first valve element 118 at an edge region of the ring element 198 and closes one of the ring element 198 formed opening.

Preferably the second valve element comprises 126 a second spring device 200 , by means of which the second valve element 126 is durable and / or held in a closed state.

The second spring device 200 is for example a spiral spring. The second spring device 200 and the first spring device 182 are coaxial in the present case.

The second spring device 200 is supported in particular on a radially outer outside of the ring element 198 , for example in a receiving groove provided for this purpose, on the one hand and on the carrier element 152 on which the membrane 148 is arranged from.

In particular, the second spring device 200 in an annular recess of the ring element 198 added, which is radially outward with respect to the central axis 184 the valve device 100 is arranged.

Alternatively, that the second spring device 200 on the carrier element 152 is supported, it can be provided that the second spring device 200 on one of the interior 106 of the container 104 remote end of the adapter element 108 supports.

Preferably the ring element 198 of the second valve element 126 in the closed state of the second valve element 126 by means of the second spring device 200 opposite to the opening direction 146 of the second valve element 126 against the adapter element 108 pressed.

A spring force of the first spring device 182 and / or a spring force of the second spring device 200 act in particular at least approximately parallel to the central axis 184 the valve device 100 .

The opening direction 144 of the first valve element 118 and / or the opening direction 146 of the second valve element 126 are preferably at least approximately parallel to the central axis 184 the valve device 100 .

There is a pressure in the interior 106 of the container 104 and a pressure in the area 120 the valve device 100 essentially identical, then both the first valve element are preferably located 118 as well as the second valve element 126 when closed.

When a critical pressure in the environment is exceeded 120 the valve device 100 and / or falling below a critical pressure in the interior 106 of the container 104 is preferably the plate element 188 of the first valve element 118 against the spring force of the first spring device 182 towards the interior 106 along the opening direction 144 of the first valve element 118 pressed.

So can fluid through a between the ring element 198 of the second valve element 126 and the plate element 188 of the first valve element 118 formed opening into the interior 106 of the container 104 pour in.

The opening is preferably gap-shaped, for example annular gap-shaped. So will the opening 115 , which is both the fluid inlet port 116 as well as the fluid outlet opening 124 forms, partially released. The first valve element 118 In this way, in particular, it comes into an open state.

If the pressure of the environment reaches 120 the valve device 100 the critical pressure or a pressure below it and / or the pressure in the interior reaches 106 of the container 104 the critical pressure or a pressure above that, the first valve element reverses 118 back to the closed state in which the plate element 188 against the ring element 198 of the second valve element 126 is pressed.

Due to the plate shape of the plate element 188 this offers in particular an increased fluid resistance.

When a critical pressure in the interior space is exceeded 106 of the container 104 and / or falling below a critical pressure in the environment 120 the valve device 100 is preferably the ring element 198 together with the first valve element 118 against the spring force of the second spring device 200 along the opening direction 146 of the second valve element 126 from the interior 106 of the container 104 pushed away. The opening 115 showing the fluid inlet port 116 and the fluid outlet port 124 forms, is in particular partially approved and / or the second valve element 126 comes into an open state.

There can be fluid through an between the adapter element 108 and the ring element 198 formed opening from the interior 106 of the container 104 out into the environment 120 the valve device 100 stream. The opening is preferably gap-shaped, for example annular gap-shaped.

When the pressure reaches the interior 106 of the container 104 again reaches the critical pressure or a pressure below that and / or the pressure of the surroundings 120 the valve device 100 again the critical pressure or a pressure above that, the second valve element reverses 198 preferably back to the closed state in which the ring element 198 against the adapter element 108 is pressed.

It can be advantageous if the cover element 154 the valve device 100 by means of several, in the present case four, clip connections with the adapter element 108 connected and / or clipped onto it.

As in particular in 14th can be seen is and / or becomes the valve device 100 preferably by means of several connecting sleeves 202 on the container 104 set.

The connecting sleeves 202 preferably have one or more friction elements on an outer side and are, for example, in openings provided for this purpose in the adapter element 108 pressed in.

The connecting sleeves 202 preferably have an internal thread, not shown, which forms part of a screw connection.

Incidentally, it is correct in the 13th until 16 illustrated fifth embodiment of a valve device 100 in terms of structure and function essentially with that in the 1 until 3 First embodiments shown correspond, so that reference is made to the description thereof.

Through the valve device 100 an inhalation function and / or an exhalation function is preferably formed and a pressure in the interior space 106 of the container 104 can be adjusted continuously and / or self-regulating.

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2815637 A1 [0003]

Claims (20)

Valve device (100), in particular for pressure regulation in an electrochemical system (102), wherein the valve device (100) comprises the following: - An adapter element (108) for fixing the valve device (100) on a container (104), the adapter element (108) having a fluid inlet opening (116) and a fluid outlet opening (124); - A first valve element (118) which blocks the fluid inlet opening (116) of the adapter element (108) in a closed state and which in an open state blocks the fluid inlet opening (116) for the inflow of fluid from an environment (120) of the valve device (100) partially or completely releases into an interior space (106) of the container (104); - A second valve element (126) which blocks the fluid outlet opening (124) of the adapter element (108) in a closed state and which, in an open state, blocks the fluid outlet opening (124) for the outflow of fluid from the interior (106) of the container (104) partially or completely releases into the environment (120) of the valve device (100); - A membrane, in particular a first membrane (148), which is arranged between the surroundings (120) of the valve device (100) and the first valve element (118); and or - A membrane, in particular a second membrane (150), which is arranged between the second valve element (126) and the surroundings (120) of the valve device (100). Valve device (100) according to Claim 1 , characterized in that the following applies to the first membrane (148) and the second membrane (150): - the first membrane (148) and the second membrane (150) are separate elements, in particular separately manufactured elements; and / or - the first membrane (148) and the second membrane (150) are spatially spaced from one another; and / or - the first membrane (148) is made of a material which differs from a material from which the second membrane (150) is made; and / or - the first membrane (148) has an average thickness which differs from an average thickness of the second membrane (150). Valve device (100) according to Claim 1 or 2 , characterized in that an opening direction (144) of the first valve element (118) and an opening direction (146) of the second valve element (126) are at least approximately parallel to one another and / or opposite to one another. Valve device (100) according to one of the Claims 1 until 3 , characterized in that the first valve element (118) has a flap element (122), the flap element (122) in a closed state of the first valve element (118) by a spring element (136) of the first valve element (118) against a fluid inlet opening (116) having wall (114a) of the adapter element (108) is pressed so that the fluid inlet opening (116) is blocked, and / or that the second valve element (126) has a flap element (122), the flap element (122) in a closed state of the second valve element (126) is pressed by a spring element (136) of the second valve element (126) against a wall (114b) of the adapter element (108) having the fluid outlet opening (124) so that the fluid outlet opening (124) is blocked . Valve device (100) according to Claim 4 , characterized in that the flap element (122) of the first valve element (118) when the pressure falls below a critical pressure in the interior (106) of the container (104) against a spring force of the spring element (136) of the first valve element (118) of the The wall (114a) of the adapter element (108) having a fluid inlet opening (116) can be or is pushed away, and / or that the flap element (122) of the second valve element (126) when a critical pressure is exceeded in the interior (106) of the container ( 104) against a spring force of the spring element (136) of the second valve element (126) can be or is pushed away from the wall (114b) of the adapter element (108) having the fluid outlet opening (124). Valve device (100) according to one of the Claims 1 until 5 , characterized in that a main extension plane of a wall (114a) of the adapter element (108), in which the fluid inlet opening (116) is arranged, is at least approximately perpendicular to a first flow direction (128) of the into the interior (106) of the container (104) inflowing fluid is arranged, wherein in particular a flap element (122) of the first valve element (118) is pivotable about a pivot axis which is arranged at least approximately perpendicular to the first flow direction (128), and / or that a main extension plane of a wall (114b) of the Adapter element (108), in which the fluid outlet opening (124) is arranged, is arranged at least approximately perpendicular to a second flow direction (130) of the fluid flowing out of the interior (106) of the container (104), wherein in particular a flap element (122) of the second valve element (126) is pivotable about a pivot axis which is at least approximately perpendicular to the second flow direction (130) is arranged. Valve device (100) according to one of the Claims 1 until 6th , characterized in that a flap element (122) of the first valve element (118) on a side of a wall (114a) of the adapter element (108) facing the interior (106) of the container (104), in which the fluid inlet opening (116) is arranged , is arranged and in particular held on the adapter element (108) by means of a tension spring element (138), and / or that a flap element (122) of the second valve element (126) on a side of a wall facing away from the interior (106) of the container (104) (114b) of the adapter element (108), in which the fluid outlet opening (124) is arranged, and is in particular held on the adapter element (108) by means of a tension spring element (138). Valve device (100) according to one of the Claims 1 until 7th , characterized in that a main extension plane of a wall (114a) of the adapter element (108), in which the fluid inlet opening (116) is arranged, is at least approximately parallel to a main flow direction (129) of the flowing into the interior (106) of the container (104) Fluids is arranged, wherein in particular a flap element (122) of the first valve element (118) is pivotable about a pivot axis which is arranged at least approximately parallel to the main flow direction (129) of the fluid flowing into the interior (106), and / or that a Main plane of extent of a wall (114b) of the adapter element (108), in which the fluid outlet opening (124) is arranged, is arranged at least approximately parallel to a main flow direction (131) of the fluid flowing out of the interior (106), with a flap element (122) in particular. of the second valve element (126) is pivotable about a pivot axis which is at least approximately is arranged parallel to the main flow direction (131) of the fluid flowing out of the interior space (106). Valve device (100) according to Claim 8 , characterized in that the flap element (122) of the first valve element (118) is pressed by a compression spring element (156) of the first valve element (118) against the wall (114a) of the adapter element (108) which has the fluid inlet opening (116), and so blocks the fluid inlet opening (116) and / or that the flap element (122) of the second valve element (126) is pressed against the wall (114b) of the adapter element (108) by a compression spring element (156) of the second valve element (126), which has the fluid outlet opening (124), and thus blocks the fluid outlet opening (124). Valve device (100) according to one of the Claims 1 until 9 , characterized in that the first valve element (118) comprises a slot element (160) or is formed therefrom, with sealing lips (162) of the slot element (160) resting against one another, in particular when the first valve element (118) is in the closed state, and with one falling below a critical pressure in the interior (106) of the container (104), the sealing lips (162) of the slit element (160) come apart and clear an opening, and / or that the second valve element (126) comprises or is formed from a slit element (160), wherein in particular in the closed state of the second valve element (126) sealing lips (162) of the slot element (160) rest against one another and when a critical pressure in the interior (106) of the container (104) is exceeded, the sealing lips (162) of the slot element (160 ) step apart and reveal an opening. Valve device (100) according to Claim 10 , characterized in that the slot element (160) of the first valve element (118) and / or the slot element (160) of the second valve element (126) comprise or are formed from a silicone material. Valve device (100) according to one of the Claims 1 until 11 , characterized in that the first valve element (118) comprises a slot element (160) or is formed therefrom, sealing lips (162) of the slot element (160) projecting towards the interior (106) of the container (104), and / or that the second valve element (126) comprises or is formed from a slot element (160), with sealing lips (162) of the slot element (160) protruding away from the interior (106) of the container (104). Valve device (100) according to one of the Claims 1 until 12th , characterized in that the first valve element (118) comprises a flip-over element (170) which blocks the fluid inlet opening (116) in a closed state of the first valve element (118) and which when the pressure falls below a critical pressure in the interior (106) of the The container (104) folds in the direction of the interior (106), whereby the fluid inlet opening (116) is partially or completely released, and / or that the second valve element (126) comprises a flip-over element (170) which integrates the fluid outlet opening (124) closed state of the second valve element (126) and which, when a critical pressure in the interior (106) of the container (104) is exceeded, folds away from the interior (106), whereby the fluid outlet opening (124) is partially or completely released. Valve device (100) according to Claim 1 , characterized in that the fluid inlet opening (116) and the fluid outlet opening (124) are identical, that the first valve element (118) and the second valve element (126) are coaxial and that in particular the valve device (100) has exactly one membrane (148). Valve device (100) according to Claim 1 or 14th , characterized in that the first valve element (118) has a first spring device (182), by means of which a plate element (188) of the first valve element (118) in a closed state of the first valve element (118) against a ring element (198) of the second Valve element (126) is pressed and / or is pressed and thus closes an opening formed by the ring element (198) and / or that the second valve element (126) has a second spring device (200) by means of which the ring element (198) of the second valve element (126) is and / or is pressed against the adapter element (108) in a closed state of the second valve element (126). Valve device (100) according to Claim 15 , characterized in that the first spring device (182) is supported on a central section (186) of the adapter element (108) on the one hand and on the plate element (188) of the first valve element (118) on the other hand and / or that the second spring device (200) is supported on the ring element (198) of the second valve element (126) on the one hand and on a carrier element (152) of the valve device (100) on the other hand. Valve device (100) according to Claim 15 or 16 , characterized in that when the pressure in the interior (106) of the container (104) falls below a critical level, the plate element (188) is pressed against a spring force of the first spring device (182) in the direction of the interior (106) and so one, in particular Annular gap-shaped opening between the plate element (188) of the first valve element (118) and the ring element (198) of the second valve element (126) releases, whereby in particular the first valve element (118) comes into an open state and / or that when a critical pressure in the interior (106) of the container (104) the ring element (198) of the second valve element (118), in particular together with the plate element (188) of the first valve element (118), against a spring force of the second spring device (200) of the interior (106) of the container (104) is pushed away and thus an, in particular annular gap-shaped, opening between the ring element (198) and the adapter element ( 108) releases, whereby in particular the second valve element (126) comes into an open state. Valve device (100) according to one of the Claims 14 until 17th , characterized in that two or more of the following elements have the same central axis: - a plate element (188) of the first valve element (118); and / or - a ring element (198) of the second valve element (126); and / or - a first spring device (182) of the first valve element (118); and / or - a second spring device (200) of the second valve element (126). Valve device (100) according to one of the Claims 1 until 18th , characterized in that the valve device (100) comprises a cover element (154) which covers the valve device (100) on a side facing the surroundings (120) of the valve device (100) and which is positively and / or non-positively and / or cohesively with the adapter element (108) is connected, wherein in particular the cover element (154) has one or more openings. An electrochemical system (102) comprising one or more valve devices (100) according to any one of Claims 1 until 19th , wherein the one or more valve devices (100) are fixed on and / or in a wall of a container (104), in particular a housing of the electrochemical system (102), in particular positively and / or non-positively and / or cohesively.

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