WO2021204562A1

WO2021204562A1 - Valve device and electrochemical system

Info

Publication number: WO2021204562A1
Application number: PCT/EP2021/057880
Authority: WO
Inventors: Matthias GOLDSCHE; Markus EBEN; Axel Streicher
Original assignee: Elringklinger Ag
Priority date: 2020-04-06
Filing date: 2021-03-26
Publication date: 2021-10-14
Also published as: EP4133549A1; DE102020204436A1

Abstract

To provide a valve device by means of which both a positive pressure and a negative pressure in an interior of a container can be equalised and which is as simple as possible to produce, the invention proposes that the valve device comprises an adapter element, a first valve element, a second valve element, a first membrane and/or 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 so that fluid can flow from surroundings of the valve device into an interior of the container, and wherein the second valve element blocks a fluid outlet opening of the adapter element in a closed state, and in an open state releases the fluid outlet opening so that fluid can flow out of the interior of the container into the surroundings of the valve device.

Description

Valve device and electrochemical system

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 known from EP 2 815 637 A1.

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 securing 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 free the fluid inlet opening for fluid to flow in from the surroundings of the valve device into an interior of the container gives.

The environment of the valve device is preferably an external environment of the valve device that is remote from and / or 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 beneficial 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 partially or completely blocks the fluid outlet opening in an open state for fluid to flow out of the interior of the container into the vicinity of the valve device free gives.

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

Through the formation of the first valve element and the second Ventilele element, both an overpressure in the interior of the container and a negative pressure in the interior of the container can be compensated.

It can be advantageous if the first valve element and the second valve element are arranged spatially separated from one another and / or spaced apart 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, according to several preferred embodiments, the fluid inlet opening and the fluid outlet opening are 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, by choosing the shape and / or cross-sectional area of the fluid inlet opening and the fluid outlet opening parameters of the respective pressure compensation can be set.

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 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 excess pressure 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 control of the pressure in the interior of the Behäl age is preferably formed. 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 while the electrochemical system is in operation. 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 compensation chamber and the second pressure compensation chamber preferably has a main plane of extent 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 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 is arranged, are spaced from one another.

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 of a material which 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 of 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 materially 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 the two carrier elements preferably have one or more passage openings. For example, 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 mem brane. 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 in a closed state of the second valve element by a spring element of the second valve element against a wall of the adapter element having the fluid outlet opening, so that the fluid outlet opening is blocked.

It can be advantageous if the flap element of the first valve element from the wall having the fluid inlet opening counteracts a spring force of the spring element of the first valve 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 of the adapter element can be pushed away and / or pushed away.

In particular, 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 flap element of the second valve element is counter to a spring force of the spring element of the second valve element from the wall of the adapter element that has the fluid outlet opening can be pushed away 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 triangle 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, in particular a length and / or a diameter of the fluid inlet opening at each point of an outer limitation thereof by about 5% or more, for example by about 10% or more , is smaller than 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 by approx. 5% or more, in particular by approx.

10% or more, is smaller than 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. 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.

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 Ventilele element changes into an open state, is adjustable in particular depending on the spring force of the spring element.

For example, by choosing 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 adjustable. A tightness of the first valve element and / or of the second valve element can be set and / or guaranteed by selecting the spring element.

For example, the flap element of the first valve element is pushed 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 in particular in the open state is brought. The fluid inlet opening is partially or completely released as a result.

Preferably, the flap element of the second valve element is pushed outward against the spring force of the spring element 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 will. 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 firmly attached to the adapter element by means of one or more hinge elements.

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

It can be advantageous if the flap element of the second valve element is firmly attached 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 which faces the interior of the container and 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 of a wall of the adapter element which faces away from the interior of the container and 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. Since 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 is preferably at least approximately perpendicular to the first flow direction along which the fluid enters the interior 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, the main plane of which is arranged at least approximately parallel to the first flow direction of the fluid flowing into the interior.

Additionally or alternatively, it can be provided that the adapter element has a further opening which is arranged in a wall whose main plane of extent 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 a compression spring element of the first valve element pressed against the wall of the adapter element, which has the fluid inlet opening. The fluid inlet opening is thus 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 through a compression spring element of the second Valve element pressed against the 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 slotted element or is formed therefrom. In particular, the sealing lips of the slot element occur when the pressure in the interior space falls below a critical level of the container and / or exceeding a critical pressure in the environment of the valve device apart and give an opening free.

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 a critical pressure is undershot 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 materially and / or non-positively and / or positively connected to the adapter element.

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

It can be advantageous if the first valve element comprises a slotted element or is formed therefrom, with sealing lips of the slotted 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 from protrude 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 element which blocks the fluid inlet opening in a closed state of the first valve element and which when the pressure in the interior of the container falls below a critical level and / or a critical pressure in the environment is exceeded the valve device folds in the direction of the interior, whereby the fluid inlet opening is partially or fully constantly released.

In addition or as an alternative, it can be provided that the second valve element comprises a flip 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 not reached the surroundings 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.

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 pressed and / or is pressed against a ring element of the second valve element in a closed state of the first valve element and thus an opening formed by the ring element locks.

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 at least approximately perpendicular to the opening direction of the first valve element and / or the opening direction of the second valve element arranged. 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 made 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 supported on the central section of the adapter element on the one hand and on the plate element of the first valve element on the other hand. The first Federvorrich 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 fact that the second spring device is supported on the carrier element of the valve device, it can be provided that the second spring device is 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, if the pressure falls below a critical pressure in the interior of the container and / or if it 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,

Releases 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 counter to a spring force of the second spring device pressed away from the interior of the container and so give free one, in particular an annular gap-shaped opening between the ring element and the adapter element, 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 position, 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 is separated in time Valve device in the interior of the container (inhalation function) can be designed and / or designed.

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.

This object is achieved according to the invention 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. 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 by 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 of the following description and the graphic representation of exemplary embodiments.

Show it:

Fig. 1 is a schematic perspective view 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 vicinity of the valve device, in a ge closed state the valve elements;

2 shows a schematic perspective sectional illustration through the

Valve device from FIG. 2;

3 shows a schematic perspective illustration of the valve device from FIGS. 1 and 2 viewed from below, so that in flap elements opening in opposite directions can be seen;

Fig. 4 is 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 at least approximately perpendicular to a main plane of extent of the Ventilvor direction, in a closed state of the valve elements ;

Fig. 5 is an enlarged view of the area designated by V in Fig. 4;

6 shows 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 slot element, a quarter of the valve device not being shown, in a closed state of the valve elements;

7 shows a schematic perspective illustration of a Schlitzele element of the valve device from FIG. 6 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;

8 shows a schematic perspective sectional illustration of the area not shown in FIG. 6, in which it can be seen that the two sealing lips are each concave with respect to a plane which runs through the slot of the slot element; Fig. 9 is a schematic perspective illustration of a fourth embodiment of a valve device, in which a partial section through the first valve element is shown, wherein a fold-over element of the first valve element is non-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;

FIG. 10 shows an enlarged illustration of a region denoted by X in FIG. 9; FIG.

11 shows a schematic perspective illustration of an underside of the valve device from FIGS. 9 and 10, which, in an assembled state, faces an interior of a container;

12 shows a schematic perspective illustration of the second valve element of the valve device from FIGS. 9 to 11;

13 shows 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 along an axial direction of a central axis of the valve device by compressing two spring devices;

14 shows a schematic perspective illustration of the valve device from FIG. 13 viewed from below, so that connecting sleeves can be seen which are and / or are being pressed into the adapter element in particular; 15 shows an exploded view of the valve device from FIGS. 13 and 14; and

16 shows a schematic sectional illustration of the valve device from FIGS. 13 to 15 along a plane designated by XVI in FIG. 15, the first valve element and the second valve element being in a closed state.

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

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

The electrochemical system 102 preferably comprises a plurality of electrochemical units which, in particular, comprise battery cells and / or accumulator cells, for example lithium-ion batteries.

For example, one or more valve devices 100 are embedded in opposing walls of the electrochemical system 102 that are designed as narrow sides and / or are fixed to them in a fluid-tight manner.

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

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

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

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

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

A two-chamber system is preferably formed by the pressure equalization chambers 110a, 110b.

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

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

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

In the closed state of the first valve element 118 shown in FIGS. 1 to 3, the fluid inlet opening 116 is blocked and / or closed by a flap element 122 of the first valve element 118.

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 has a fluid outlet opening 124 through which fluid flows or can flow out of the interior 106 of the container 104 when a second valve element 126 of the valve device 100 is open.

In the closed state of the second valve element 126 shown in FIGS. 1 to 3, the fluid outlet opening 124 is blocked and / or closed by a flap element 122 of the second valve element 126.

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

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

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

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

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

In the closed state of the first valve element 118, the flap element 122 of the first valve element 118 preferably rests completely on an edge region surrounding the fluid inlet opening 116 and / or is pressed against it, so that the fluid inlet opening 116 is blocked, in particular fluid-tight.

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

In particular, when the second valve element 126 is in a closed state, the flap element 122 of the second valve element 126 lies on an edge region of the second wall 114b surrounding the fluid outlet opening 124 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 is arranged on a side of the first wall 114a facing the interior 106 of the container 104.

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

The flap element 122 of the first valve element 118 and / or the flap element 122 of the second valve element 126 are preferably mounted pivotably.

In particular, 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 are arranged at least approximately perpendicular to a first flow direction 128, along which, in an open state of the first valve element 118, fluid from the surroundings 120 of the ven valve device 100 flows into the interior 106 of the container 104.

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

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

The first flow direction 128 and the second flow direction 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 approximately parallel to one another and / or opposite one another.

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

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

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

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 is fixed directly to the partition 112 of the adapter element 108 by means of the hinge elements 132. For example, in each case a first part of a hinge element 132 is fixed on an outside flap element 122 of the first valve element 118 facing the interior 106 of the container 104, while a second part of the hinge element 132 pivotably connected to the first part is attached to a side of the first wall facing the partition 114a or the partition 112 of the adapter element 108 is fixed.

Additionally or alternatively, a first part of a hinge element 132 is fixed on an inside of the flap element 122 of the second valve element 126 facing the interior 106 of the container 104, while a second part of the hinge element 132, which is pivotably connected to the first part, is attached to a partition wall Side of the second wall 114b or the partition 112 of the adapter element 108 is set.

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 have a support structure 134 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 carrier 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 is held in a closed state by a spring element 136, for example a tension spring element 138.

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

If the pressure falls below a critical pressure in the interior 106 of the container 104 and / or exceeds a critical pressure in the area 120 of the valve device 100, the flap element 122 of the first valve element 118 is preferably against a spring force of the spring element 136 along an opening direction 144 of the first valve element 118 is pressed and / or pulled in the direction of the interior 106 of the container 104. As a result, the first valve element 118 reaches an open state in which the fluid inlet opening 116 is partially or completely released.

In particular, in the open state of the first valve element 118, fluid can flow from the surroundings 120 of the valve device 100 through the first pressure equalization chamber 110a into the interior space 106 of the container 104.

If the pressure in the interior 106 of the container 104 and / or the surroundings 120 of the valve device 100 again reaches the critical pressure or more or less, the first valve element 118 returns to the closed state.

An inhalation function of the valve device 100 is preferably formed by opening the first valve element 118.

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

By selecting the spring element 136 of the first valve element 118, a minimum opening pressure of the first valve element 118 is preferably adjustable. The flap element 122 of the second valve element 126 is preferably held in a closed state by a spring element 136, in particular a tension spring element 138.

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

If a critical pressure in the interior 106 of the container 104 is exceeded and / or if the pressure falls below a critical pressure in the environment 120 of the valve device 100, the flap element 122 of the second valve element 126 is preferably removed from the interior 106 of the container 104 along an opening direction 146 of the second valve element 126 pushed outward and / or pulled.

The second valve element 126 thus in particular reaches an open state in which the fluid outlet opening 124 is completely or partially released. Fluid can thus flow out from the interior 106 of the container 104 into the surroundings 120 of the valve device 100.

If the pressure in the interior 106 of the container 104 and / or the surroundings 120 of the valve device 100 again reaches the critical pressure or less or more, the second valve element 126 returns to the closed state.

An exhalation function of the valve device 100 is preferably formed by the opening of the second valve element 126.

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

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

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

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

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

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

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

The first membrane 148 covers and / or preferably covers the fluid inlet opening 116 on a side of the adapter element 108 facing away from the interior 106 of the container 104. The second membrane 150 covers and / or covers the fluid outlet opening 124, preferably on a side of the adapter element 108 facing away from the interior 106 of the container 104.

The first membrane 148 and / or the second membrane 150 are preferably connected to the respective carrier element 152 and / or the adapter element 108 in a materially bonded and / or form-fit and / or force-fit manner.

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

It can be advantageous if the first membrane 148 is arranged at a distance from the fluid inlet opening 116. For example, the first membrane 148 is fixed together with the carrier element 152 on an end of the adapter element 108 facing away from the interior 106 of the container 104.

It can be advantageous if the second membrane 150 is arranged at a distance from the fluid outlet opening 124. For example, the second mem brane 150 is fixed together with the carrier element 152 at an end of the adapter element 108 facing away from the interior 106 of the container 104.

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

For example, the first membrane 148 and / or the second membrane 150 comprise a polytetrafluoroethylene (PTFE) material or are formed therefrom.

It can be provided that the first membrane 148 is formed from a material which is different from a material from which the second membrane 150 is formed. For example, a material is selected for the first membrane 148 which has a low permeability to moisture and / or water. Thus, when "inhaling", comparatively little moisture and / or what water can penetrate from the environment 120 of the valve device 100 into the interior 106 of the container 104.

A material is selected for the second membrane 150, for example, which has a high level of air permeability and / or breathability. In this way, when "exhaling", as much fluid as possible can flow out of the interior 106 of the container 104 into the surroundings 120 of the valve device 100 as quickly as possible.

In addition or as an alternative, the first membrane 148 can have an average thickness perpendicular to its main extension plane, which differs from an average thickness of the second membrane 150 perpendicular to its main extension plane.

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

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

It can be favorable if the valve device 100 has a cover element 154, which is used in particular to mechanically protect the first membrane 148 and / or the second membrane 150 and / or the first valve element 118 and / or the second valve element 126. The cover element 154 is preferably positively and / or non-positively and / or materially connected to the adapter element 108. For example, the cover element 154 is pushed onto the adapter element 108 and / or connected to the same by means of a clip connection.

A second embodiment of a valve device 100 shown in FIGS. 4 and 5 differs in terms of structure and function essentially from the first embodiment shown in FIGS. 1 to 3 in that the flap element 122 of the first valve element 118 and the flap element 122 of the second valve element 126 is held in the closed state by a spring element 136 designed as a compression spring element 156.

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

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

A first flow direction 128 of the fluid flowing into the interior 106 of the container 104 is preferably at least approximately parallel to an opening direction 144 of the first valve element 118.

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

A second flow direction 130 of the fluid flowing out of the interior 106 of the Behäl age 104 is preferably at least approximately parallel to the opening direction 146 of the second valve element 126 angeord net.

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

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

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

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

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

For flow guidance, it can be beneficial if the adapter element 108 has, in addition to the fluid inlet opening 116 and the fluid outlet opening 124, one or more, in the present case two, further openings 158 which establish a fluid connection with the interior 106 of the container 104.

The further openings 158 are preferably adjacent to the first wall 114a, which has the fluid inlet opening 116, and / or to the second wall 114b, which has the fluid outlet opening 124.

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

The other further opening 158 preferably fluidly connects the interior 106 of the container 104 to the second pressure equalization chamber 110b.

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 these are not shown in the drawings in FIGS. 4 and 5, the valve device 100 according to the second embodiment preferably a first membrane 148 and / or a second membrane 150, which are designed and / or arranged according to the first embodiment of the valve device 100.

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

Otherwise, the second embodiment of a valve device 100 shown in FIGS. 4 and 5 essentially corresponds in terms of structure and function to the first embodiment shown in FIGS. 1 to 3, so that reference is made to the description thereof.

A third embodiment of a valve device 100 shown in FIGS. 6 to 8 differs in terms of structure and function essentially from the first embodiment shown in FIGS. 1 to 3 in that the first valve element 118 comprises a slot element 160 or is formed therefrom and / or that the second valve element 126 comprises or is formed from a slot element 160.

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

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

The slot element 160 of the first valve element 118 is preferably non-positively and / or positively and / or materially connected to the first wall 114a of the adapter element 108. The slot element 160 of the second valve element 126 is preferably connected to the second wall 114b of the adapter element 108 in a force-locking and / or form-locking and / or material-locking manner.

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

The sealing lips 162 are preferably arranged adjacent to one another in a closed state of the respective Ven tilelements 118, 126, a slot 164 being formed between the sealing lips 162.

If the pressure falls below a critical pressure in the interior 106 of the container 104 and / or exceeds a critical pressure in the environment 120 of the valve device 100, in particular fluid is pressed along the first flow direction 128 and / or the opening direction 144 of the first valve element 118, so that the sealing lips 162 are pressed apart and so fluid can flow into the interior 106 of the container 104 men. The first valve element 118 is then in an open state. The fluid inlet opening 116 is then preferably completely or partially released and fluid flows from the surroundings 120 of the valve device 100 into the interior 106 of the container 104.

If the critical pressure in the vicinity 120 of the valve device 100 is reached or undercut and / or the critical pressure in the interior 106 of the container 104 is reached or exceeded, the sealing lips 162 again come into contact with one another and the first valve element 118 is located again when closed.

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 the first wall 114a of the adapter element 108 away. The sealing lips 162 preferably extend inward.

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

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

The slot element 160 of the first valve element 118 preferably works analogously to the slot element 160 of the first valve element 118, with an excess of a critical pressure in the interior 106 of the container 104 and / or a fall below a critical pressure in the area 120 of the valve device 100 the sealing lips 162 are pressed apart from the inside due to the fluid pressure and so the second Ventilele element 126 comes into an open state. The fluid outlet opening 124 is then preferably completely or partially released and fluid flows from the interior 106 of the container 104 into the surroundings 120 of the valve device 100.

Even if these are not shown in the drawings in FIGS. 6 to 8, the valve device 100 according to the third embodiment preferably has a first membrane 148 and / or a second membrane 150, which are designed and / or arranged according to the first embodiment of the valve device 100 .

Support elements 150 of the first membrane 148 and / or of the second membrane 150 and a cover element 154 are also preferably provided (not shown). It can be advantageous if a (not shown) first membrane 148 and a (not shown) second membrane 150, which in particular are each arranged on a carrier element 152 designed according to the first embodiment, 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 148 is arranged on an end of the adapter element 108 facing the interior 106 of the container 104, the first membrane 148 in particular covering and / or covering the first pressure compensation chamber 110a.

In particular, the second membrane 150 is arranged on an end of the adapter element 108 facing away from the interior 106 of the container 104, the second membrane 150 in particular covering and / or covering the second pressure compensation chamber 110b.

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 covers both the first valve element 118 and the second valve element 126.

Otherwise, the third embodiment of a valve device 100 shown in FIGS. 6 to 8 essentially corresponds in terms of structure and function to the embodiment shown in FIGS. 1 to 3, so that reference is made to the description thereof.

A fourth embodiment of a valve device 100 shown in FIGS. 9 to 12 differs in terms of structure and function essentially from the first embodiment shown in FIGS. 1 to 3 in that the first valve element 118 and / or the second valve element 126 each have a flip element 170 exhibit. The flip 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 of the second valve element 126 each have an at least approximately cylindrical sealing plate 172.

In particular, the sealing plate 172 is connected to a securing section 174 of the respective Umklappele element 170 via a section that widens along the respective opening direction 144, 146 of the respective valve element 118, 126.

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

The fixing section 174 is preferably received between a Lamellenele element 176 and a flow guide element 178 of the first Ventilele element 118 and / or the second valve element 126 in a force-fitting and / or form-fitting manner.

If the pressure falls below a critical pressure within the interior 106 of the container 104 and / or if a critical pressure in the environment 120 of the valve device 100 is exceeded, the sealing plate 172, which blocks the fluid inlet opening 116 when the first valve element 118 is closed, is preferably in the direction the interior 106 of the loading container 104 pushed or pulled inward. In this way, in particular, fluid can flow from the surroundings 120 of the valve device through intermediate spaces arranged between lamellae 180 of the lamellar element 176 and can flow into the interior 106 of the container 104 through the further opening 158. The first valve element 118 is then in the open state. After a pressure in the environment 120 has reached the critical pressure or is below it, the sealing plate 172 in particular folds back into its initial state. The first valve element 118 is then again in the closed state.

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

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

If the pressure in the interior 106 of the container 104 exceeds a critical pressure and / or if a pressure in the environment 120 of the valve device 100 falls below the critical pressure, the sealing plate 172 of the second valve element 126 is preferably pushed away from the interior 106 of the container 104 to the outside , so that a flow path for fluid from the interior 106 of the container 104 through the fluid outlet opening 124 via intermediate spaces between lamellas 180 of the lamellar element 176 and via a further opening 158 into the surroundings 120 of the valve device 100 is exposed.

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

If the pressure in the interior 106 of the container 104 reaches the critical pressure or a lower pressure and / or the pressure in the surroundings 120 of the valve device 100 reaches the critical pressure or a higher pressure, the sealing plate 172 in particular folds back into the initial state. The second valve element 126 is then again in the closed state. It can be advantageous if the valve device 100 has a cover element 154 which has one or more openings.

For example, the cover element 154 has a plurality of circular and / or slot-shaped openings.

Even if these are not shown in the drawings in FIGS. 9 to 12, the valve device 100 according to the fourth embodiment preferably has a first membrane 148 and / or a second membrane 150, which are designed and / or arranged according to the first embodiment of the valve device 100 .

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

Alternatively, it can be provided that the valve device has a single mem brane, which covers both the first valve element 118 and the second valve element 126 to the surroundings 120 of the valve device 100.

Otherwise, the fourth embodiment of a valve device 100 shown in FIGS. 9 to 12 essentially corresponds in terms of structure and function to the embodiment shown in FIGS. 1 to 3, so that reference is made to the description thereof.

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

A fifth embodiment of a valve device 100 shown in FIGS. 13 to 16 essentially differs in terms of structure and function from the first shown in FIGS. 1 to 3 Embodiment that the fluid inlet opening 116 and the fluid outlet opening 124 are identical and that the first valve element 118 and the second valve element 126 are coaxial.

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

In the present case, a single membrane 148 is provided which covers and / or covers the opening 115, which forms both the fluid inlet opening 116 and the fluid outlet opening 124.

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

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

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

It can be advantageous if the first spring device 182 is supported on a central section 186 of the adapter element 108 located radially inward with respect to a central axis 184, on the one hand, and on a plate element 188 of the first valve element 118, on the other hand. The first spring device 182 is supported in particular on a side of the central section 186 facing away from the interior 106 on the Zentralab section 186 and on a side of the plate element 188 facing the interior 106 on the plate element 188.

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

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 are coaxial. For example, the first spring device 182 radially surrounds the stabilization section 190 of the first valve element 118.

The stabilization section 190 protrudes away from the plate element 188 in the direction of the interior 106 of the container 104 and / or is formed in one piece with the plate element 188.

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. In a closed state of the first valve element 118, the stabilization section 190 is preferably received by an opening formed in the central section 186.

In the present case, the adapter element 108 comprises a plate-shaped section 192, on which a connection with the wall of the container 104 is and / or is preferably established. In the present case, the adapter element 108 comprises a hollow cylindrical section 194, which extends away from the plate-shaped section 192 on a side of the plate-shaped section 192 facing away from the interior 106 of the container 104.

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 presently connected to a base body of the adapter element 108 via a plurality of support elements 196.

In the present case, the support elements 196 are rib-shaped and extend radially outward from the central section 186. As a result of the rib-shaped design of the support elements 196, on the one hand, a stabilization of the adapter element 108 is preferably formed and, on the other hand, fluid can flow through between the support elements 196.

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

In a closed state of the first valve element 118, the plate element 188 of the first valve element 118 is preferably on a Randbe rich of the ring element 198 and closes an opening formed by the ring element 198.

The second valve element 126 preferably comprises a second spring device 200, by means of which the second valve element 126 can be and / or is 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 side of the ring element 198, for example in a receiving groove provided for this, on the one hand and on the carrier element 152 on which the membrane 148 is arranged.

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

As an alternative to the second spring device 200 being supported on the carrier element 152, provision can be made for the second spring device 200 to be supported on an end of the adapter element 108 facing away from the interior 106 of the container 104.

In the closed state of the second valve element 126, the ring element 198 of the second valve element 126 is preferably pressed by the second spring device 200 against the opening direction 146 of the second valve element 126 against the adapter element 108.

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 of 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 of the valve device 100. If a pressure in the interior 106 of the container 104 and a pressure in the environment 120 of the valve device 100 are essentially identical, then both the first valve element 118 and the second valve element 126 are preferably in the closed state.

If a critical pressure in the vicinity 120 of the valve device 100 is exceeded and / or if the pressure falls below a critical pressure in the interior 106 of the container 104, the plate element 188 of the first valve element 118 is preferably counter to the spring force of the first spring device 182 in the direction of the interior 106 pressed along the opening direction 144 of the first valve element 118.

Thus, fluid can flow into the interior 106 of the container 104 through an opening formed between the ring element 198 of the second valve element 126 and the plate element 188 of the first valve element 118.

The opening is preferably gap-shaped, for example annular gap-shaped. The opening 115, which forms both the fluid inlet opening 116 and the fluid outlet opening 124, is thus partially exposed. The first valve element 118 thus in particular reaches an open state.

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

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

When exceeding a critical pressure in the interior 106 of the container 104 and / or falling below a critical pressure in the In the vicinity 120 of the valve device 100, the ring element 198 is preferably pressed 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 away from the interior 106 of the container 104. The opening 115, which forms the fluid inlet opening 116 and the fluid outlet opening 124, is in particular partially released and / or the second valve element 126 comes into an open state.

Fluid can flow out of the interior 106 of the container 104 into the surroundings 120 of the valve device 100 through an opening formed between the adapter element 108 and the ring element 198. The opening is preferably gap-shaped, for example annular gap-shaped.

If the pressure in the interior 106 of the container 104 again reaches the critical pressure or a pressure below it and / or the pressure of the environment 120 of the valve device 100 again reaches the critical pressure or a pressure above it, the second valve element 198 preferably returns to the closed state, in which the Ringele element 198 is pressed against the adapter element 108.

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

As can be seen in particular in FIG. 14, the valve device 100 is and / or is preferably fixed to the container 104 by means of a plurality of connecting sleeves 202.

The connecting sleeves 202 preferably have one or more friction elements on an outer side and are, for example, pressed into openings provided for this purpose in the adapter element 108. The connecting sleeves 202 preferably have an internal thread, not shown, which forms part of a screw connection.

Otherwise, the fifth embodiment of a valve device 100 shown in FIGS. 13 to 16 essentially corresponds in terms of structure and function to the first embodiment shown in FIGS. 1 to 3, so that reference is made to the description thereof.

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

Claims

1. Valve device (100), in particular for pressure control 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), wherein the Adapter element (108) has 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) to allow fluid to flow out of the interior space (106) of the container (104 ) partially or completely releases into the surroundings (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).

2. 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 elements manufactured separately; 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).

3. 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 one another are set.

4. Valve device (100) according to one of claims 1 to 3, characterized in that the first valve element (118) has a flap element (122), wherein the flap element (122) in a closed state of the first valve element (118) through a spring element (136) of the first valve element (118) is pressed against a wall (114a) of the adapter element (108) having the fluid inlet opening (116) 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) by a spring element (136) of the second valve element (126) against a wall (114b) having the fluid outlet opening (124) ) of the adapter element (108) is pressed so that the fluid outlet opening (124) is blocked.

5. Valve device (100) according to claim 4, characterized in that the flap element (122) of the first valve element (118) at a Falling 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) from which the fluid inlet opening (116) facing wall (114a) of the adapter element (108) can be pushed away or is pushed away, and / or that the flap element (122) of the second valve element (126) when a critical pressure in the interior (106) of the container (104) is exceeded against a spring force of the spring element (136) of the second valve element (126) from which the fluid outlet opening (124) facing wall (114b) of the adapter element (108) can be pushed away or is pushed away.

6. Valve device (100) according to one of claims 1 to 5, characterized in that a main plane of extent of a wall (114a) of the adapter element (108), in which the fluid inlet opening (116) is arranged, at least approximately perpendicular to a first flow direction (128) of the fluid flowing into the interior (106) of the container (104) is arranged, wherein in particular a flap element (122) of the first valve element (118) is pivotable about a pivot axis which is at least approximately perpendicular to the first flow direction ( 128) is arranged, 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 at least approximately perpendicular to a second flow direction (130) from the interior (106 ) of the container (104) is arranged from flowing fluids, in particular a flap element (122) of the second valve element (126) around a pivot a axis is pivotable, which is arranged at least approximately perpendicular to the second flow direction (130).

7. Valve device (100) according to one of claims 1 to 6, characterized in that a flap element (122) of the first valve element (118) on one of the interior (106) of the container (104) facing Side of a wall (114a) of the adapter element (108), in which the fluid inlet opening (116) is arranged, and in particular is 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 facing away from the interior (106) of the container (104) of a wall (114b) of the adapter element (108), in which the fluid outlet opening (124) is arranged, and in particular by means of a tension spring element (138 ) is held on the adapter element (108).

8. Valve device (100) according to one of claims 1 to 7, characterized in that a main plane of extent of a wall (114a) of the adapter element (108), in which the fluid inlet opening (116) is arranged, at least approximately parallel to a main flow direction (129) of the fluid flowing into the interior (106) of the container (104) is arranged, in particular a flap element (122) of the first valve element (118) being pivotable about a pivot axis which is at least approximately parallel to the main flow direction (129) of the fluid flowing into the interior space (106) is arranged, 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 at least approximately parallel to a main flow direction (131 ) of the fluid flowing out of the interior space (106) is arranged, in particular a flap element (122) of the second valve element (126 ) is pivotable about a pivot axis which is arranged at least approximately parallel to the main flow direction (131) of the fluid flowing out of the interior space (106).

9. Valve device (100) according to claim 8, characterized in that the flap element (122) of the first valve element (118) by a compression spring element (156) of the first valve element (118) against the Wall (114a) of the adapter element (108) is pressed, which has the fluid inlet opening (116) and thus blocks the fluid inlet opening (116), and / or that the flap element (122) of the second valve element (126) by a compression spring element (156) of the second valve element (126) is pressed against the wall (114b) of the adapter element (108), which has the fluid outlet opening (124), and thus blocks the fluid outlet opening (124).

10. Valve device (100) according to one of claims 1 to 9, characterized in that the first valve element (118) comprises a slot element (160) or is formed therefrom, wherein in particular in the closed state of the first valve element (118) sealing lips ( 162) of the slot element (160) bear against one another and, if the pressure falls below a critical pressure in the interior (106) of the container (104), the sealing lips (162) of the slot element (160) come apart and release an opening, and / or that the second valve element (126) comprises a slit element (160) or is formed therefrom, with sealing lips (162) of the slit element (160) resting against one another in particular when the second valve element (126) is closed and with an excess of a critical pressure in the Interior (106) of the container (104) the Dichtlip pen (162) of the slot element (160) come apart and release an opening.

11. 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.

12. Valve device (100) according to one of claims 1 to 11, characterized in that the first valve element (118) comprises a slot element (160) or is formed therefrom, wherein sealing lips (162) of the Slit element (160) protrude towards the interior (106) of the container (104), and / or that the second valve element (126) comprises or is formed from a slit element (160), sealing lips (162) of the slit element (160) from the interior (106) of the container (104) protrude away.

13. Valve device (100) according to one of claims 1 to 12, characterized in that the first valve element (118) comprises a Umklappele element (170) which blocks the fluid inlet opening (116) in a closed state of the first valve element (118) and wel ches when the pressure falls below a critical pressure in the interior (106) of the container (104) 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) a flip-over element (170) which blocks the fluid outlet opening (124) when the second valve element (126) is closed and which when a critical pressure in the interior (106) of the container (104) is exceeded the interior (106) folds away, whereby the fluid outlet opening (124) is partially or completely released.

14. 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 Ventilele element (126) are coaxial and that in particular the Valve device (100) has exactly one membrane (148).

15. Valve device (100) according to claim 1 or 14, characterized in that the first valve element (118) has a first Federvor direction (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).

16. 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 support element (152) of the valve device (100) on the other hand.

17. Valve device (100) according to claim 15 or 16, characterized in that when the pressure falls below a critical pressure in the interior (106) of the container (104), the plate element (188) against a spring force of the first spring device (182) in the direction of the interior space (106) is pressed and thus an, 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), whereby in particular the first valve element (118 ) enters an open state and / or that when a critical pressure in the interior (106) of the container (104) is exceeded, the ring element (198) of the second Ventilele 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) is pushed away from the interior (106) of the container (104) 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.

18. Valve device (100) according to one of claims 14 to 17, 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).

19. Valve device (100) according to one of claims 1 to 18, characterized in that the valve device (100) comprises a cover element (154) which faces the valve device (100) on one of the surroundings (120) of the valve device (100) Side covers and which is positively and / or non-positively and / or cohesively connected to the adapter element (108), wherein in particular the cover element (154) has one or more openings.

20. An electrochemical system (102) comprising one or more valve devices (100) according to one of claims 1 to 19, wherein the one or more valve devices (100) 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, are fixed.