Device for the pressure testing, evacuation and filling of an assembly

Abstract

The invention relates to a device for the pressure testing, evacuation and / or filling of a non-vacuum-resistant or non-pressure-resistant assembly by means of a vacuum pressure filling or a vacuum volume filling, the device comprising a vacuum chamber for accommodating the assembly to be filled and an adapter for filling the assembly to be filled. The problem addressed by the invention is that of providing a corresponding device which has a compact design with small volumes, in order to permit short evacuation times and aeration times. At the same time, the aim is to have only a small consumption of auxiliary gas and good handling for an automation system. The problem is solved by releasably assembling the vacuum chamber of the device from a first housing component and a second housing component, specific designs being proposed for these components.

Description

[0001] Device for pressure testing, evacuation and filling of an assembly

[0002] The invention relates to a device for pressure testing, evacuating and / or filling a preferably non-vacuum-resistant or non-pressure-resistant assembly by means of a vacuum pressure filling or a vacuum volume filling, wherein the device has a chamber for receiving the assembly to be filled and an adapter for pressure testing, evacuating and / or filling the assembly.

[0003] For various technical applications, liquids or gases must be supplied as operating fluids to an assembly, a workpiece, or a technical system. For the purposes of this description of the invention, the term "assembly" will be used for such technical objects. An assembly can comprise multiple workpieces and / or subsystems. To enable air-free filling of assemblies, pressure filling is preferably implemented, which is often additionally supported by vacuum or negative pressure.

[0004] For the purposes of the present invention, overpressure is understood to mean a pressure level that is higher than the ambient pressure. Vacuum is understood to mean a pressure level that is below the ambient pressure.

[0005] Filling is typically divided into several process steps, which are necessary for testing (e.g., pressure leak test) and preparation (e.g., evacuation) of the filling process, as well as for the actual filling. If the assembly to be filled is first evacuated, the gases contained within the assembly can be extracted, creating a vacuum within the assembly before filling with the respective filling medium.

[0006] A typical application for vacuum pressure filling is the automotive industry. Vehicles are filled with the necessary operating fluids on the manufacturer's assembly lines. The operating fluids are fed from filling systems via lines and filling adapters into the vehicle components to be filled (circuits, containers, etc.). Such applications are known, for example, from DE 197 00 436 C2, DE 10 2007 029 020 A1, and DE 10 2014 011 611 B4 and do not pose any inherent problems because the vehicle components to be filled are designed to be pressure- and vacuum-resistant.

[0007] However, if vacuum-pressure filling is to be used for assemblies that are not pressure-resistant or vacuum-resistant, the assembly may collapse under the application of pressure or vacuum. Therefore, additional process and / or equipment-related aspects must be considered for such applications in order to be able to fill the respective assembly.

[0008] The object of the invention is to create a device for pressure testing, evacuating, and / or filling a non-vacuum-resistant or non-pressure-resistant assembly that has a compact design with small volumes to enable short evacuation and venting times. At the same time, it should result in only low auxiliary gas consumption and achieve good handling for automation.

[0009] This object is achieved by the subject matter of the independent patent claims. Preferred embodiments are the subject matter of the dependent patent claims.

[0010] One idea is to provide a device for pressure testing, evacuating, and / or filling an assembly according to claim 1. The device comprises a first housing component and a second housing component. The second housing component is coupled to the first housing component in such a way that a chamber is formed for accommodating the assembly to be treated. The device has an adapter for pressure testing, evacuating, and / or filling the assembly.

[0011] In one variant, the chamber can be designed as a vacuum chamber. A vacuum chamber is defined as a chamber in which a negative pressure relative to the ambient pressure can be achieved.

[0012] In an alternative variant, the chamber can be designed as a pressure chamber. A pressure chamber is defined as a chamber in which an overpressure relative to the ambient pressure can be achieved.

[0013] In one variant, the first housing component can be designed as a vacuum pressure tank. A vacuum pressure tank is understood to be a tank-shaped housing component that can be used to form part of a positive or negative pressure chamber.

[0014] In one variant, the second housing component can be designed as a base plate.

[0015] This makes it possible to provide a device into which an assembly to be treated can be easily inserted.

[0016] According to a preferred embodiment of the device, the adapter has an outlet piece. The outlet piece is oriented and designed such that, during a pressure testing, evacuation, and / or filling process, the outlet piece can be fluid-tightly coupled to an opening of an assembly to be treated. In an alternative embodiment, the outlet piece can have a separate seal. This allows different pressures to be set and maintained in the chamber and in the assembly.

[0017] In a further alternative embodiment, the adapter can have a movable piston. The movable piston is coupled to the outlet piece. The movable piston can be arranged in the adapter in such a way that it can be moved and controlled (e.g., hydraulically or pneumatically) such that the outlet piece can be pushed into the opening of the assembly with the aid of the piston.

[0018] According to a further preferred embodiment, the device comprises a first shaped piece, with the aid of which an assembly to be treated can be aligned relative to the adapter. The device further comprises a shaped piece receptacle. The first shaped piece is adapted to the dimensions and / or shape of the assembly in such a way that the outlet piece can be coupled to the opening in a fluid-tight manner during a pressure testing, evacuation, and / or filling process.

[0019] The first molded part can be made of plastic, metal, or ceramic. In an alternative embodiment, the molded part can be manufactured integrally with the first housing component.

[0020] According to a further preferred embodiment, the device comprises a fixing device with a clamping drive for fixing the position of the assembly, wherein the clamping drive is equipped with exchangeable second and third shaped pieces for fixing the position of the assembly.

[0021] This ensures a secure hold of the assemblies being treated. Furthermore, the clamping device allows for positional fixation and compensation for size differences between the assemblies.

[0022] According to a further preferred embodiment, the device has a line connection and / or a first sensor connection. The line connection can preferably comprise a vacuum connection and an auxiliary gas connection. The connections can preferably be integrated into a single structural unit. The adapter has a filling connection, a gas supply connection, and / or a second sensor connection.

[0023] A vacuum connection is understood here to be a connection by means of which a pressure below the ambient pressure can be generated in the chamber of the device. The vacuum connection can comprise a valve for opening and / or closing the connection. An auxiliary gas connection is understood here to be a connection by means of which a fluid can be introduced into the chamber of the device. The fluid can be a gas or a liquid. This can be used to generate an overpressure relative to the ambient pressure in the chamber. The auxiliary gas connection can comprise a valve for opening and closing the connection.

[0024] In this context, a filling connection is understood to be a connection through which a fluid can be introduced into the assembly. The filling connection can include a valve for opening and closing the connection. The fluid can be a gas or a liquid. A gas supply connection is understood to be a connection through which a negative pressure relative to the ambient pressure can be generated in the assembly or through which an auxiliary gas can be introduced into the assembly.

[0025] A first and a second sensor connection are each understood to be a connection for a sensor. A pressure sensor can preferably be provided as the sensor. With the help of a pressure sensor, the prevailing pressure can be measured via the sensor connection. The first sensor connection enables a pressure measurement in the chamber of the device. The second sensor connection provides a pressure measurement in the assembly.

[0026] According to another preferred embodiment, the connections of the device and the connections of the adapter are arranged on the same side of the device. Preferably, the connections are arranged on the side of the second housing component. This allows for simplified cable routing. Furthermore, accessibility to the device can be improved.

[0027] According to a further preferred embodiment, the device comprises a volume ballast. The volume ballast is replaceable and is designed and / or selected depending on the assembly to be treated. The volume ballast is arranged within the chamber in such a way that a free residual volume is reduced.

[0028] A volume ballast is understood to be a displacement body. The device can preferably also comprise a plurality of volume ballasts. This makes it possible to minimize the space in the chamber that needs to be evacuated or filled. This means that less fluid needs to be removed from or added to the chamber to achieve the desired pressure within the chamber.

[0029] According to a further preferred embodiment, the second housing component is aligned with the first housing component by means of a positioning device such that the outlet piece of the adapter can be sealingly connected to the opening of the assembly to be treated for pressure testing, evacuation and / or filling.

[0030] In one variant, the positioning device is designed as a centering device. Preferably, the centering can be achieved using a centering pin, an internal or external stop, or with the aid of a tongue-and-groove connection. In a preferred variant, the tongue-and-groove connection can be implemented as a circumferential collar.

[0031] According to a further preferred embodiment, a closure element is assigned to the first housing component and the second housing component. The closure element releasably connects the first housing component to the second housing component. A seal is provided on the first housing component and / or the second housing component in the coupling region of the housing components.

[0032] In one variant, a seal is arranged on the first housing component and another seal on the second housing component. This allows for particularly good sealing of the chamber from the environment.

[0033] A closure element is understood to be a separate component that releasably connects the two housing components. In one variant, the closure element can be attached to one of the two housing components. In an alternative variant, the closure element can be designed as a separate component that exerts a force on the first and second housing components to connect the two housing components. In another variant, several similar closure elements are provided.

[0034] According to a further preferred embodiment, the first housing component is designed as a vacuum pressure tank. The second housing component is designed as a base plate. The chamber is designed as a vacuum chamber and the sensor is designed as a vacuum pressure sensor. The base plate has a structural unit on its upper side which can be brought into operative connection with the vacuum chamber and for this purpose has connections for evacuating the vacuum chamber and for supplying auxiliary gas into the vacuum chamber, as well as a vacuum pressure sensor. An opening is formed in the base plate in which a filling adapter is supported. The base plate has at least two closure elements arranged opposite one another on its front end sections for an operative connection with the vacuum pressure tank.Furthermore, the base plate has at least one seal and a centering device on its underside for an operative connection with the vacuum pressure tank, as well as a fixing device with a clamping drive for securing the position of the assembly to be filled. One embodiment proposes that the locking elements on the base plate be designed as locking pawls and have a contour that is congruent with the contour of the associated section of the vacuum pressure tank.

[0035] A further embodiment proposes that the seal on the base plate is designed with two circular seals running parallel to each other, each of which is arranged in a groove on the underside of the base plate.

[0036] A further embodiment proposes that the centering devices on the base plate are designed as locking pins and have a contour that is congruent with the contour of an opening on the associated section of the vacuum pressure tank.

[0037] The vacuum pressure tank has a U-shaped cross-section. At the upper end section of the side walls, a flange-like, circumferential projection is formed, which has an outward-facing and an inward-facing section. The outward-facing section has a contour that is congruent with the contour of the locking pawls on the locking elements on the corresponding section of the base plate. The inward-facing section has openings that are congruent with the contour of the locking pins on the corresponding section of the base plate.

[0038] One embodiment proposes that the vacuum pressure tank is equipped on the top of its base surface with interchangeable molded pieces for fixing the position of the assembly to be filled.

[0039] A further embodiment proposes that a batch-specific volume ballast be arranged on the upper side of the bottom surface of the vacuum pressure tank. This is preferably designed such that the free residual volume within the vacuum pressure tank is reduced as much as possible. In a modified embodiment, the batch-specific volume ballast can also be provided at another location within the vacuum chamber.

[0040] The technical solution according to the invention is suitable for numerous applications for pressure testing, evacuation, and filling of non-vacuum or pressure-resistant assemblies using vacuum-pressure filling or vacuum-volume filling. Regardless of the specific application, the following advantages in particular arise over previously known solutions: A two-part vacuum chamber is designed that encloses a fixed assembly. This makes the vacuum chamber easy to load, making it suitable for automatic operation and easy to integrate into automated production lines.

[0041] The vacuum chamber has a small volume, which can be further reduced or optimized by adding a ballast volume. This small volume results in low auxiliary gas consumption. Furthermore, the small volume allows for rapid pressure changes within the vacuum chamber, resulting in rapid evacuation and pressure regulation.

[0042] The vacuum or pressure measurement is performed directly on the assembly. The seal at the assembly's filling opening does not need to be able to accommodate large pressure differences, as there is no significant pressure difference between the external and internal pressure of the assembly. This seal makes it possible to use different media to achieve pressure inside and outside the assembly.

[0043] During filling, the pressure within the assembly can be significantly increased without creating a pressure difference on the outer wall of the assembly. This allows for significantly faster saturation of porous surfaces within the assembly. Ideally, this allows the predefined total fill volume to be filled in a single step. This, in turn, accelerates subsequent process steps and avoids the need for subsequent refilling or topping up to the target volume.

[0044] Finally, controlled pressure equalization after filling is possible, possibly combined with adjusting the filling level by sucking back excess liquid. This prevents any dripping from the filling adapter and, consequently, contamination of the surface of the assembly around the filling opening after the filling adapter is removed from its adapted position on the assembly.

[0045] A further idea of ​​the invention is to provide a method for pressure testing, evacuating, and / or filling an assembly. The method comprises the following steps: providing a device with an adapter for receiving an assembly to be treated. Inserting the assembly to be treated into the device. Closing the device such that the device forms a fluid-tight chamber in which the assembly is arranged, which is fluid-tight to the environment. Filling the assembly with a fluid at a defined overpressure or a defined volume over a predefined time, up to a predefined volume and / or a predefined pressure.

[0046] This ensures that an assembly is filled properly.

[0047] According to a preferred embodiment of the method, the method comprises the following further steps:

[0048] Fluid-tight coupling of the adapter to an opening in the assembly before the assembly is filled with a defined overpressure. Pressurizing the chamber with a defined first negative pressure and the assembly with a defined second negative pressure in such a way that a virtually constant pressure ratio is established between the pressure in the chamber and the pressure within the assembly. Pressurization takes place before the assembly is filled with a defined overpressure. The chamber is then filled with an auxiliary gas with a defined overpressure depending on the pressure specified or measured in the assembly in such a way that a predefined overpressure exists in the assembly relative to the pressure in the chamber. After the specified filling of the assembly is complete, the auxiliary gas is emptied from the chamber, preferably sucked off using a pump, and the pressure in the chamber is adjusted to ambient pressure.

[0049] In one variant, the existing pressures in the chamber and the assembly can be measured before the assembly is filled with a defined overpressure. This allows you to check whether the defined negative pressures have been established in the chamber and the assembly.

[0050] According to a further preferred embodiment of the method, after measuring the pressures in the chamber and in the assembly, the method comprises the following further steps:

[0051] Change the set pressure in the chamber and / or assembly. Re-measure the set pressures in the chamber and / or assembly. Compare the measured pressures in the chamber and / or assembly before and after the pressure change.

[0052] This allows the assembly to be checked for possible leaks.

[0053] According to a further preferred embodiment of the method, the method comprises the following further steps:

[0054] Providing a first molded part. Inserting the first molded part into the device, wherein the first molded part is aligned with a molded part receptacle of the device. Gripping an assembly to be treated from a storage location using a fixing device of the device. Inserting the gripped assembly into the device such that the assembly is aligned for fluid-tight coupling with the adapter using the first molded part. This eliminates the need for a separate device for gripping the assembly to be treated from a storage location.

[0055] Further important features and advantages of the invention emerge from the subclaims, from the drawings and from the associated description of the figures based on the drawings.

[0056] It is understood that the features mentioned above and those to be explained below can be used not only in the combination specified in each case, but also in other combinations or on their own, without departing from the scope of the present invention.

[0057] Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components.

[0058] They show:

[0059] Fig. 1 is a schematic diagram of a first device according to the invention;

[0060] Fig. 2 is a schematic diagram of a second device according to the invention in a first

[0061] operating position;

[0062] Fig. 3 the second device in a second operating position;

[0063] Fig. 4 the second device in a third operating position;

[0064] Fig. 5 the second device in a fourth operating position;

[0065] Fig. 6 is a schematic diagram of a third device according to the invention;

[0066] Fig. 7 is a schematic diagram of a fourth device according to the invention;

[0067] Fig. 8 shows a plan view of a schematic diagram of the fixing device of the first device.

[0068] The figures show devices A, B, C and D which are designed for pressure testing, evacuation and / or filling of non-vacuum-resistant or non-pressure-resistant assemblies 1 by means of vacuum pressure filling or vacuum volume filling.

[0069] The first device A (Fig. 1) comprises a first housing component 5 and a second housing component 4. The second housing component 4 is trough-shaped in such a way that it encompasses an inner working volume in the form of a chamber 15 on several sides. In particular, the second housing component 4 comprises, in an integral construction, both several side walls 4.1 and a top wall 4.2. The first housing component 5, on the other hand, is largely flat and designed as a base plate 5.2. In a preferred embodiment, the housing components 4, 5 are made of a plastic, a plastic derivative, a metal and / or ceramics. In one variant, the housing components 4, 5 can be made of the same materials. In an alternative variant, the first housing component 5 and the second housing component 4 are each made of different materials.In a preferred embodiment, the first housing component 5 is made of a metallic material, while the second housing component 4 is made of a plastic. Several openings for the connections 14.1, 14.2, 14.3 and an opening for an adapter 2 are provided in the second housing component 4. The two housing components 4, 5 are aligned with one another using a positioning device (not shown) and coupled together as shown in Fig. 1. The coupling of the two housing components 4, 5 can be realized with a bayonet connection (not shown), a screw connection, or a clip connection.

[0070] A seal 6 is provided in the coupling area to provide a fluid-tight connection. The seal 6 can be made of a typical sealing material. Preferably, a polyamide (PA), a nitrile butadiene rubber (NBR), an ethylene propylene diene (monomer) rubber (EPDM), a fluororubber compound (FKM), or a silicone is used as the sealing material.

[0071] The two housing components 4, 5 together enclose and delimit the chamber 15. In one variant, the chamber 15 can be designed as a pressure chamber. In a pressure chamber, an overpressure relative to the ambient pressure is provided in the chamber 15 at least temporarily. In an alternative embodiment, the chamber 15 can also be designed as a vacuum chamber. In a vacuum chamber, a negative pressure relative to the ambient pressure is occasionally applied in the chamber 15. In a further alternative embodiment, the chamber 15 can be designed as a vacuum-pressure chamber. In this case, both a negative pressure and an overpressure can be provided alternately in the chamber 15 as follows: First, a negative pressure can be created in the chamber 15 by evacuation.Subsequently, the pressure can be increased by filling the chamber with a fluid medium in such a way that the negative pressure is first neutralized to ambient pressure and subsequently an overpressure is generated in the chamber 15 by further filling.

[0072] The pressures of the chamber 15 can be adjusted via a vacuum connection 14.1 and / or an auxiliary gas connection 14.2 by evacuating via the vacuum connection 14.1 and filling with a fluid medium in the form of an auxiliary gas via the auxiliary gas connection 14.2. The vacuum connection 14.1 and the auxiliary gas connection 14.2 are preferably integrated into the second housing component 4 or firmly connected to the second housing component 4.

[0073] The second housing component 4 may further comprise a first sensor connection 14.3, via which a pressure measurement value in the chamber 15 can be tapped and fed to a sensor.

[0074] In a preferred variant, the connections 14.1, 14.2 and 14.3 are combined in a structural unit 14 (see Fig. 1). The structural unit 14 is preferably attached to the second housing component 4. The structural unit 14 can comprise a control valve for each of the connections. With the aid of the control valves, lines for fluids connected to the connections can be opened or closed. In a preferred variant, the control valves are arranged directly on the second housing component 4. This allows the line paths of the connections to be kept short.

[0075] Using the vacuum connection 14.1, a negative pressure, in particular the pressure pvi, can be set in the chamber 15. For this purpose, the gas present in the chamber is extracted by a pump (not shown) in such a way that a defined negative pressure ("vacuum") is created relative to the ambient pressure.

[0076] An auxiliary gas, preferably nitrogen, can be introduced into the chamber 15 using the auxiliary gas connection 14.2. This allows a defined overpressure, in particular the pressure PHI, to be provided in the chamber 15. The auxiliary gas can be provided by means of a pump (not shown) or from a pressure tank (not shown).

[0077] Using sensor connection 14.3, a pressure sensor VP1 can be provided to measure the existing pressure in chamber 15. Using the pressure sensor VP1, the pressure to be set in chamber 15 can be checked and adjusted.

[0078] The chamber 15 serves to accommodate an assembly 1 to be treated. The assembly 1 can consist of one or more workpieces, systems, or subsystems. The assembly 1 is held in a fixing device 8 and is characterized by its sensitivity to pressure loads (overpressure or underpressure) in certain cases.

[0079] The fixing device 8 has a leg on which a second and / or third shaped piece 10, 11 is arranged. The end piece of the leg is connected to a tensioning drive 9. In one variant, the leg is designed as an L-shaped leg 17, as shown in Fig. 8. The fixing device 8 further has a second straight leg 16. The straight leg 16 is connected to the tensioning drive 9. The L-shaped leg 17 and / or the straight leg 16 can be adjusted with the aid of the tensioning drive 9. In an alternative variant, a U-shaped leg can be provided instead of an L-shaped leg 17, wherein the two end pieces of the U-shaped leg can be connected to the tensioning drive 9. In one variant, the tensioning drive 9 is electrically driven. In an alternative variant, the tensioning drive 9 is operated pneumatically or hydraulically.With the help of the clamping drive 9, the second and / or third molded pieces 10, 11 can therefore be moved towards one another in order to clamp the assembly 1. This ensures that the assembly 1 is held securely within the chamber 15. By using the second and / or third molded pieces 10, 11, different shapes and sizes of assemblies 1 to be treated can be securely held and positioned in the fixing device 8. For this purpose, the second and / or third molded pieces 10, 11 are geometrically adapted to the respective assembly to be used in such a way that the opening 3 of the assembly 1 can be coupled to the connecting piece 2.1 of the adapter 2 in a fluid-tight manner. In order to reduce or avoid the risk of damage to the assembly 1 during clamping, the second and / or third molded pieces 10, 11 are made of an elastic plastic.The fixing device 8 is arranged on the first housing component 5 and projects from the first housing component 5 in the direction of the chamber 15 to be formed. In a preferred variant, the fixing device 8 is formed integrally with the first housing component 5.

[0080] The first housing component 5 further comprises a shaped piece receptacle 5.1. In one variant, this can be manufactured as an integral part of the first housing component 5. The shaped piece receptacle 5.1 serves to receive a first shaped piece 12. The first shaped piece 12 is held in the shaped piece receptacle 5.1 by frictional engagement and / or positive engagement. For this purpose, in one variant, the first shaped piece 12 can be introduced into the shaped piece receptacle 5.1 by means of a press fit. In an alternative variant, the first shaped piece 12 can be coupled to the shaped piece receptacle 5.1 by means of a thread, a bayonet, or a clip connection. To prevent an assembly 1 from being damaged and / or deformed by the first shaped piece 12, the first shaped piece 12 comprises a material that is more elastic than the material of the assembly 1. In one variant, the first shaped piece 12 can be formed from a plastic.The first shaped piece 12 serves to align and position the assembly 1 within the chamber 15. In a further variant, the first shaped piece 12 can be designed such that it aligns, positions, and holds the assembly 1 within the device A. For this purpose, the first shaped piece 12 can be made of one piece or several parts. With a multi-part design of the first shaped piece 12, the individual shaped piece parts can be connected to one another such that they at least partially enclose the assembly 1. With the help of the first shaped piece 12, the assembly 1 can be positioned in the chamber 15 such that an opening 3 of the assembly 1 can be connected to the adapter 2 in a fluid-tight manner. In a further variant, the first shaped piece 12 can be designed such that it functions as a displacement body within the chamber 15. This allows the defined pressure to be set in the chamber 15 more quickly.

[0081] The pressure within the assembly 1 can be adjusted using the adapter 2. For this purpose, the adapter 2 is inserted into the second housing component 4 in a fluid-tight manner. For example, the adapter 2 can be screwed to the second housing component 4. This allows the adapter 2 to be easily removed for maintenance purposes. The adapter 2 has an outlet piece 2.1. The outlet piece 2.1 is coupled to the opening 3 of the assembly 1 in a fluid-tight manner. For this purpose, the outlet piece 2.1 can, in one variant, have a seal (not shown). The sealing effect can be improved by a separate seal. In an alternative variant, the outlet piece 2.1 can have an integrally arranged conical chamber seal in the sealing area. The adapter 2 further comprises a filling connection 2.2, a gas supply connection 2.3, a second sensor connection 2.4 and / or a control connection 2.5.

[0082] With the help of the filling connection 2.2, a fluid can be introduced into the assembly 1 via the adapter 2. For this purpose, a (pressure) pump (not shown) can preferably be provided. In one variant, the assembly 1 can be designed as a battery or accumulator cell and the fluid as an electrolyte. In an alternative variant, the assembly 1 can be designed as a sensor unit and the fluid as oil, in particular as a dielectric oil. In a further variant, the assembly 1 is designed as an electronic unit with a housing, wherein the fluid is selected as an inert gas, preferably nitrogen or helium.

[0083] Using the gas supply connection 2.3, a negative pressure, in particular a negative pressure pv2, can be set in the assembly 1 via the adapter 2. The negative pressure can be achieved using a (suction) pump (not shown). In an alternative embodiment, an overpressure, in particular the pressure PH2, can be set in the assembly 1 via the gas supply connection 2.3. For this purpose, an additional auxiliary gas can be introduced into the assembly 1 via the gas supply connection.

[0084] Using the second sensor connection 2.4, a pressure sensor VP2 can be connected to adapter 2. This makes it possible to determine the pressure within assembly 1. The control connection 2.5 can be used to control the dosing opening of adapter 2.

[0085] In one variant, several connections 14.1, 14.2, 14.3, 2.2, 2.3, 2.4, 2.5 are arranged on the same side of the device A, in particular on the side of the second housing component 4. This allows for simplified cable routing on the device A. Furthermore, accessibility to the device A is facilitated.

[0086] The adapter 2 can preferably have an adjustable piston 2.6. With the help of the adjustable piston 2.6, the outlet piece 2.1 can be moved towards the assembly 1. To adjust the piston 2.6, a defined overpressure or negative pressure is generated in the adapter chamber 2.8. For this purpose, a defined pressure P is applied via a chamber connection 2.7. siThe fluid can be a gas, preferably nitrogen, or a liquid, preferably oil. The adjustable piston 2.6 can provide a secure and fluid-tight coupling in the case of a difficult-to-access opening 3 of the assembly 1.

[0087] Furthermore, the device A can have a volume ballast 13 (not shown), which can be arranged in the chamber 15. The volume ballast serves as a displacement body in order to be able to set the defined pressure in the chamber 15 more quickly. The volume ballast 13 is fastened in the chamber 15 in an exchangeable manner. In one variant, the volume ballast 13 is detachably fastened to an inner side of the first and / or the second housing component 4, 5 by means of a clip connection. In an alternative variant, the fastening of the volume ballast 13 can be designed as a screw connection. In a special embodiment, a plurality of different or different or similar volume ballast units can be provided. This allows the volume of the chamber 15 to be reduced in the best possible way.

[0088] In a further variant, the volume ballast 13 can be designed in such a way that it also takes over the function of the first shaped piece 12.

[0089] In a further embodiment of the device according to the invention, the device comprises a vacuum chamber for receiving the assembly 1 to be filled (or several assemblies 1 to be filled) and a filling adapter 2a for filling the assembly 1 to be filled. The assembly 1 has a filling opening 3, which is operatively connected to the filling adapter 2a during filling.

[0090] The elements necessary for the operation of the filling adapter 2a are designated by the reference symbols p V 2 (vacuum), pH2 (auxiliary gas), p si (Adapter delivery), ps2 (dosing opening control) and PF2 (filling medium).

[0091] The vacuum chamber 5a of the device is detachably assembled from a base plate 4a and a vacuum pressure tank 5a. The base plate 4a has a structural unit on its upper side that can be brought into operative connection with the vacuum chamber. For this purpose, this structural unit has connections for evacuating the vacuum chamber and for supplying auxiliary gas into the vacuum chamber. In the drawing, the connections are marked with the respective applied pressure p. vi for the vacuum and PHI for the auxiliary gas. This assembly also includes a vacuum pressure sensor VP1. Furthermore, an opening is formed in the base plate 4a, in which the filling adapter 2a is supported.

[0092] The base plate 4a has at least two locking elements arranged opposite one another at its front end sections for an operative connection with the vacuum pressure tank 5a. In the drawing, these locking elements are designated by the pressure pcia or pcib applied there, respectively. These locking elements are preferably designed as locking pawls with a contour that is congruent with the contour of the associated section of the vacuum pressure tank 5a.

[0093] Furthermore, the base plate 4a has at least one seal 6 and a centering element 7 on its underside for an operative connection with the vacuum pressure tank 5a. The seal 6 is preferably designed with two circular seals running parallel to one another, each arranged in a groove on the underside of the base plate 4a. The centering element 7a (preferably several such centering elements 7a are provided) is designed as a locking pin with a contour that is congruent with the contour of an opening in the associated section of the vacuum pressure tank 5a.

[0094] On the underside of the base plate 4a, a fixing device 8 is arranged, which is equipped with a clamping drive 9 for fixing the position of the assembly 1 to be filled. The clamping drive 9 is equipped with interchangeable fittings 10 and 11 for fixing the position of the assembly 1 to be filled. The elements necessary for controlling the clamping drive 9 are marked with reference symbols psa and ps4.

[0095] The vacuum pressure tank 5a has a U-shaped cross-section. A flange-like, circumferential projection is formed at the upper end section of the side walls, said projection having an outward and an inward section. The outward-leading section has a contour that is congruent with the contour of the locking pawls on the closure elements on the associated section of the base plate 4a. The inward-leading section has openings that are congruent with the contour of the locking pins 7 on the associated section of the base plate 4a. The vacuum pressure tank 5a is equipped on the upper side of its base surface with replaceable molded pieces 12 for fixing the position of the assembly 1 to be filled. Furthermore, a batch-specific volume ballast 13 can be arranged on the upper side of the base surface. This volume ballast 13 is designed such that the free residual volume within the vacuum pressure tank 5a is reduced as much as possible.

[0096] Fig. 2 shows an operating position in which the base plate 4a and the vacuum pressure tank 5a are separated from each other as separate components.

[0097] Fig. 3 shows an operating position in which the base plate 4a and the vacuum pressure tank 5a remain separate from each other as separate components. In this position, however, the assembly 1 to be filled is clamped in position via the clamping drive 9 and the molded parts 10 and 11.

[0098] Fig. 4 shows an operating position in which the base plate 4a and the vacuum pressure tank 5a are aligned and fixed to each other via the centering devices 7. The assembly 1 to be filled is already resting on the upper side of the bottom surface of the vacuum pressure tank 5a.

[0099] Fig. 5 shows an operating position in which the base plate 4a and the vacuum pressure tank 5a, which are fixed in position relative to one another, are now clamped via the closure elements, thus forming a functional vacuum pressure chamber 5a. In this illustration, the vacuum pressure sensor associated with the filling adapter 2a is marked with a reference symbol VP2.

[0100] Fig. 5 thus shows the operating position of the device, in which pressure testing, evacuation, and filling of non-vacuum-resistant or non-pressure-resistant assemblies can be performed using vacuum-pressure filling or vacuum-volume filling. Typical applications in this regard include testing and filling sensors with oil or testing and filling batteries with electrolyte.

[0101] When using the device according to the invention, the following functional sequence results:

[0102] In the operating position shown in Fig. 5, by combining the filling tool (consisting of base plate 4a with filling adapter 2a and the other elements mounted on base plate 4a) and the vacuum-pressure tank 5a, a chamber is formed that is vacuum- and pressure-tight from the environment. In the vacuum-pressure chamber, assembly 1 is additionally sealed at its filling opening 3a via the filling adapter 2a, allowing pressure testing, vacuum testing, and filling to be carried out via the latter. Different media are used simultaneously in assembly 1 and in the surrounding vacuum-pressure chamber, the pressures of which can be regulated separately, allowing different pressure differences between the internal pressure of assembly 1 and the surrounding chamber to be set.

[0103] The assembly 1 is secured in the vacuum pressure chamber. The securing device 8 used for this purpose can be arranged – as shown in the drawing – either on the base plate 4a or in the vacuum pressure tank 5a. The specific design depends on the type of components, shape, weight, and automated loading system.

[0104] The assembly 1 is secured by mechanical movement of the clamping drive 9 (Fig. 2). Interchangeable fittings 10; 11 enable the locking of assemblies 1 of different sizes (batch production) and position the filling opening 3a of the assembly 1 precisely under the filling adapter 2a.

[0105] Depending on the specific size of the assembly 1, an additional batch-specific volume ballast 13 can be interchangeably mounted in the vacuum pressure tank 5a in order to limit the volume of the resulting chamber and thus the consumption of the auxiliary gas P Hiduring the procedure and to optimize the evacuation and pressure control speed and accuracy.

[0106] The base plate 4a with the filling adapter 2a and the vacuum pressure tank 5a are brought together in a centered manner and closed and sealed with a suitable closure mechanism. The specific type and number of closures depends on the application. The drawing shows two pneumatically driven closure elements as examples, which are activated by applying pressure p C ia and p C ib. Alternatively, pressing the vacuum pressure tank 5a against the base plate 4a with the filling adapter 2a using the motion drive is sufficient. During this movement, the assembly 1 is centered on the molded part 12. The filling opening 3a of the assembly 1 is now located centrally below the filling adapter 2a at a defined height.

[0107] The filling adapter 2a is powered by the integrated pneumatic drive with a pressure of over p si adjustable contact force onto assembly 1 and sealed with a seal at the filling opening of the filling adapter 2a. By setting different pressures inside (pv2 / PH2) and outside (pvi / PHI) of assembly 1, this assembly 1 can be subjected to pressure difference tests. The actually set pressures are measured via the vacuum pressure sensors VP1 and VP2 and regulated as required. While assembly 1 is being evacuated, the vacuum pressure tank 5a is also evacuated in a controlled manner, with the vacuum pvi and pv2 being applied by separate vacuum sources. After the desired final vacuum has been reached, assembly 1 is filled with the medium to be filled via a separate line in the filling adapter 2a, and at the same time the pressure in the vacuum pressure tank 5a is increased.

[0108] As soon as the assembly 1 is completely filled with the medium, the pressure of the filling medium pF2 can be further increased and at the same time the pressure of the auxiliary gas p Hi be regulated in such a way that the pressure difference remains so low, despite a high filling pressure, which is necessary, for example, to wet or saturate the smallest fine-pored structures of components (e.g. sensors) or materials (e.g. electrode material of a battery cell) located in the assembly 1, that even a thin outer wall of the assembly 1 is not deformed or overpressure safety devices incorporated into it are not triggered.

[0109] After completion of the filling, a pressure equalization can be achieved by means of a controlled pressure setting pvi / pm, P 2 / PH2 and pF2 so that the filling adapter 2a remains as drip-free as possible after its de-adaptation or that by means of an overpressure p HiA controlled and rapid cleaning of the filling line in the filling adapter 2a is possible. The pressure in the vacuum pressure chamber is equalized to the ambient pressure. The vacuum pressure chamber is then opened by separating the base plate 4a and the vacuum pressure tank 5a, and the assembly 1 is removed manually by a worker or by a suitable automation device.

[0110] Finally, it should be pointed out that in such a device, the components described above can also be present in multiples, so that simultaneous parallel processing of several assemblies 1 in a common process sequence is possible.

[0111] A further embodiment of a device C according to the invention is disclosed in Figure 6. The device C has a first housing component 5 which has a U-shaped cross-section. The first housing component 5 further has a flange-like circumferential projection 5.4 at the upper end section of the bottom side walls 5.3. This circumferential projection 5.4 has an outward-facing and an inward-facing section. The first housing component 5 consists of several components joined together. In one variant, at least one component comprises a different material than the other components. This makes it possible to provide a particularly cost-effective and / or particularly dimensionally stable housing component. Preferably, the bottom side walls 5.3 and the circumferential projection 5.4 of the first housing component 5 are made of a cast metal, preferably a gray cast metal. This has the necessary dimensional stability and can be produced cost-effectively.

[0112] The outwardly and inwardly leading sections of the first housing component 5 serve as a coupling region to the second housing component 4. The second housing component 4 has a plate-shaped cross-section. The second housing component 4 further has a component section. This component section serves as a positioning device 7. The positioning device 7 has a smaller diameter than the circumferential projection 5.4 such that the positioning device 7 can position itself on the circumferential projection 5.4 of the first housing component 5. Preferably, the circumferential projection 5.4 of the first housing component 5 has a bevel. This enables easier positioning of the second housing component 4 on the first housing component 5. In an alternative embodiment (not shown), the positioning device 7 of the second housing component 4 has a larger diameter such that the first housing component 4 can position itself on the circumferential projection 5.4 of the second housing component 5 can be positioned.

[0113] Seals 6 are provided in the coupling area. In one variant, the seals 6 can be designed as separate seals 6 and connected to the first and / or second housing components 4, 5. The seals 6 can be designed as an annular seal, a flat seal, or a molded seal with protruding sealing lips. In a particularly preferred embodiment, one seal is arranged on the first housing component 5 and another seal on the second housing component 4. This enables particularly good sealing of the chamber 15 against the ambient pressure.

[0114] The two housing components 4, 5 shown in Fig. 6 are pressed together by means of a holding force and thus coupled to the environment in a fluid-tight manner. For this purpose, in one variant, the first housing component 5 can rest on a support, for example a machining table, or be firmly connected to it. The second housing component 4 is pressed onto the first housing component 4 by a holding force. In an alternative variant, the holding force can act on both housing components 4, 5 in such a way that the housing components 4, 5 are pressed together. In a further variant, the second housing component 4 can rest on a support or be firmly connected to it, while the first housing component 5 is pressed onto the second housing component 4 by a holding force. The holding force can preferably be provided by a separate hold-down device.The holding force must be maintained continuously during pressure testing, evacuation and / or filling in order to seal device C from the environment.

[0115] In Fig. 7, a further embodiment of the invention is disclosed in the form of a device D for pressure testing, evacuation and / or filling, on which the method according to the invention is described with the following steps.

[0116] To carry out the method according to the invention, the device D is provided. The device D has a first housing component 5 and a second housing component 4. The second housing component 4 has an adapter 2. An assembly 1 to be treated is inserted into the device D. In one variant, the device D is designed for pressure testing, evacuating and filling battery cells and / or accumulator cells. In this variant, the assembly is a battery cell and / or an accumulator cell. Preferably, the assembly 1 can be inserted into the device D together with a first molded piece 12. For this purpose, the assembly 1 is first inserted into the first molded piece 12. The assembly 1 and the first molded piece 12 are then inserted into the molded piece receptacle 5.1 of the first housing component 5. In an alternative preferred embodiment of the method, the first molded piece 12 can be inserted into the device D first.The assembly 1 is then inserted into the first molded piece 12 now located in the device D. In an alternative variant, the device D has a fixing device 8 for gripping and holding an assembly 1. With this, an assembly 1 to be treated can be gripped from a storage location with the aid of the fixing device 8 and introduced into the device D. Preferably, the assembly 1 is introduced into the device D with the aid of the fixing device 8 in such a way that the assembly 1 is aligned with the first molded piece 12. The insertion of the assembly 1 is made significantly easier, particularly in the case of large and / or bulky assemblies, by the division of the housing into two parts. After the assembly 1 to be treated has been inserted, the device D is closed in such a way that the device D forms a chamber 15 that is fluid-tight to the environment. In the embodiment of Fig. 7, the second housing component 4 is held stationary, in particular laterally.The first housing component 5 is pressed against the second housing component 4 by a holding force and is thus closed.

[0117] The assembly 1 is arranged in chamber 15. In one variant, the assembly 1 is filled with a fluid, in particular an electrolyte. Filling occurs with a defined overpressure or after a defined volume has been filled. Filling occurs over a predefined time, up to a predefined volume and / or a predefined pressure within the assembly 1.

[0118] In a variant of the method according to the invention, the device D is provided and the assembly 1 is inserted. Preferably, the assembly 1 is aligned in the chamber 15 with the aid of the first shaped piece 12 such that an opening 3 of the assembly 1 is aligned with the adapter 2. The adapter 2 can then be coupled to the opening 3 of the assembly 1 in a fluid-tight manner. For this purpose, the adapter 2 preferably has an outlet nozzle 2.1, which preferably has a seal. By fluid-tight coupling the assembly 1 to the adapter 2, a different pressure can be set in the chamber 15 and the assembly 1. In a further method step, the chamber 15 is subjected to a defined first negative pressure. The assembly 1 is subjected to a defined second negative pressure.The evacuation of chamber 15 and assembly 1 occurs in such a way that a virtually constant pressure ratio is established between chamber 15 and assembly 1. Preferably, after the evacuation of chamber 15 and assembly 1, the pressures in chamber 15 and in assembly 1 are measured. This allows checking whether the predefined negative pressure has been established. For this purpose, a pressure sensor VP1 can preferably be connected to chamber 15 via a first sensor connection 14.3. The sensor connection 14.3 preferably has a switching valve. A further pressure sensor VP2 can preferably be connected to assembly 1 via a second sensor connection 2.4. Both sensor connections are connected to a control unit (not shown). This enables simple control of the sensors and / or valves.A pressure test of assembly 1 can then be carried out by changing one of the set pressures in chamber 15 and / or assembly 1. Preferably, the pressure of chamber 15 is changed. The set negative pressure of assembly 1 is maintained. After changing the set pressure in chamber 15 and / or assembly 1, the set pressures in chamber 15 and / or assembly 1 are measured again. The measured pressures are then compared with the measured pressures of the evacuated chamber 15 and the evacuated assembly 1. The control unit then compares the measured pressures. By comparing the measured pressures, a leak in chamber 15 and / or assembly 1 can be determined.

[0119] Subsequently, the assembly 1 is filled with a fluid at a defined overpressure or a defined volume. Filling takes place over a predefined time, up to a predefined volume and / or a predefined pressure. The chamber 15 is filled with an auxiliary gas at a specific time or simultaneously. In one variant, the auxiliary gas can be nitrogen, as this is inert to most materials. The chamber 15 is filled with a defined overpressure depending on the pressure specified or measured in the assembly 1. This makes it possible to set a predefined overpressure in the assembly 1 for the chamber 15. This makes it possible to keep the load on the assembly 1 low despite the overpressure during filling in the assembly 1. In a preferred variant, after the assembly 1 has been completely filled with the fluid, the pressure in the assembly 1 can be further increased for a defined time.This allows highly porous materials in particular to be saturated with the fluid more quickly.

[0120] After the specified filling of the assembly 1 has been completed, in one variant the pressure within the assembly 1 is adjusted to the pressure in chamber 15. The outlet nozzle 2.1 of the adapter 2 is then detached from the assembly 1. For this purpose, the pressure in the adapter chamber 2.8 is adjusted. The auxiliary gas in the chamber 15 is then emptied, in particular by suction using a pump. This allows the pressure in the chamber 15 to be adjusted to ambient pressure. The device D is then opened by decoupling the first housing component 5 from the second housing component 4. The filled assembly 1 can then be removed from the device D and another assembly can be introduced into the device D for treatment. The insertion and removal of the assembly 1 can be carried out manually by a worker or automatically with the aid of a robot device (not shown).

[0121] In an alternative variant, the pressure within assembly 1 and in chamber 15 is adjusted to ambient pressure at approximately the same time. Subsequently, the outlet nozzle 2.1 of adapter 2 is detached from assembly 1. Thereafter, or approximately at the same time, the two housing components 4, 5 of device D are separated from each other, so that assembly 1 can be removed from device D.

[0122] List of reference symbols

[0123] A first device

[0124] B second device

[0125] C third device

[0126] D fourth device

[0127] 1 assembly

[0128] 2 adapters

[0129] 2a Filling adapter

[0130] 2.1 Outlet piece

[0131] 2.2 Filling connection

[0132] 2.3 Gas supply connection

[0133] 2.4 second sensor connection

[0134] 2.5 Control connection

[0135] 2.6 adjustable piston

[0136] 2.7 Chamber connection

[0137] 2.8 Adapter chamber

[0138] 3 Opening

[0139] 3a Filling opening

[0140] 4 second housing component

[0141] 4a Base plate

[0142] 4.1 Side walls

[0143] 4.2 Ceiling wall

[0144] 5 first housing component

[0145] 5a Vacuum pressure tank

[0146] 5.1 Fitting holder

[0147] 5.2 Base plate

[0148] 5.3 Floor side walls

[0149] 5.4 Advantage

[0150] 6 Seal

[0151] 7 Positioning device

[0152] 7a Centering / locking pin on base plate

[0153] 8 Fixing device

[0154] 9 Tension drive

[0155] 10 second fitting

[0156] 11 third fitting

[0157] 12 first fitting

[0158] 13 Volume ballast 14 Unit

[0159] 14.1 Vacuum connection

[0160] 14.2 Auxiliary gas connection

[0161] 14.3 first sensor connection

[0162] 15 chambers

[0163] 16 straight leg

[0164] 17 L-shaped leg

[0165] VP1 vacuum pressure sensor

[0166] VP2 vacuum pressure sensor

[0167] Pda pressure on the closure element

[0168] Pdb pressure on the closure element

[0169] PF2 pressure filling medium

[0170] PHI pressure auxiliary gas

[0171] PH2 pressure auxiliary gas filling adapter psi pressure delivery filling adapter

[0172] Ps2 pressure control dosing opening

[0173] Ps3 pressure control tension drive

[0174] Ps4 pressure control tension drive

[0175] Pvi pressure vacuum

[0176] Pv2 pressure vacuum filling adapter

Claims

Patent claims 1. Device for pressure testing, evacuation and / or filling an assembly (1), wherein the device comprises a first housing component (5) and a second housing component (4), wherein the second housing component is coupled to the first housing component (5) in such a way that a chamber (15) for receiving the assembly (1) to be treated is formed, wherein the device (A, B, C, D) has an adapter (2) for pressure testing, evacuation and / or filling the assembly (1).

2. Device according to claim 1, characterized in that the adapter (2) has an outlet piece (2.1), wherein the outlet piece (2.1) is aligned and designed such that, during a pressure testing, evacuation and / or filling process, the outlet piece (2.1) can be coupled fluid-tight to an opening (3) of an assembly (1) to be treated.

3. Device according to claim 2, characterized in that the device (A, B, C, D) has a first molded part (12) with the aid of which a component assembly (1) to be treated can be aligned relative to the adapter (2), wherein the device (A, B, C, D) has a molded part receptacle (5.1) and the first molded part (12) is adapted to the dimensions and / or the shape of the component assembly (1) to be treated in such a way that, during a pressure testing, evacuation and / or filling process, the outlet piece (2.1) can be coupled fluid-tight to the opening (3).

4. Device according to one of the preceding claims, characterized in that the device (A, B, C, D) has a fixing device (8) with a clamping drive (9) for fixing the position of the assembly (1), wherein the clamping drive (9) is equipped with interchangeable second and third shaped pieces (10, 11) for fixing the position of the assembly (1).

5. Device according to one of the preceding claims, characterized in that the device (A, B, C, D) has a line connection (14.1, 14.2), in particular a vacuum connection (14.1) and an auxiliary gas connection (14.2), and / or a first sensor connection (14.3), wherein the connections (14.1, 14.2, 14.3) are preferably integrated in a component (14), and the adapter (2) has a filling connection (2.2), a gas supply connection (2.3) and / or a second sensor connection (2.4).

6. Device according to claim 5, characterized in that several connections (14.1 , 14.2, 14.3) of the device (A, B, C, D) and several connections (2.2, 2.3, 2.4) of the adapter (2) are arranged on the same side of the device (A, B, C, D), in particular on one side of the second housing component (4).

7. Device according to one of the preceding claims, characterized in that the device (A, B, C, D) has a volume ballast (13), wherein the volume ballast (13) is interchangeable and designed and / or selected depending on the assembly (1) to be treated, wherein the volume ballast (13) is arranged within the chamber (15) such that a free residual volume is reduced.

8. Device according to one of the preceding claims, characterized in that the second housing component (4) is aligned to the first housing component (5) by means of a positioning device (7), in particular by means of a centering device, such that the outlet piece (2.1) of the adapter (2) can be connected sealingly to the opening of the assembly (1) to be treated for pressure testing, evacuation and / or filling.

9. Device according to one of the preceding claims, characterized in that the first housing component (5) and / or the second housing component (4) have a locking element, wherein the locking element detachably connects the first housing component (5) with the second housing component (4), wherein a seal (6) is provided in the coupling area of ​​the housing components (4, 5) on the first housing component (5) and / or on the second housing component (4), which is at least partially compressed by the locking element between the two housing components.

10. Device according to one of the preceding claims for pressure testing, evacuation and filling of a non-vacuum-resistant or non-pressure-resistant assembly by means of vacuum pressure filling or vacuum volume filling, wherein the chamber is designed as a vacuum chamber, wherein the device has a vacuum chamber for receiving the assembly to be filled and a filling tool for filling the assembly to be filled, wherein the second housing component (4) is designed as a base plate and wherein the first housing component (5) is designed as a vacuum pressure vessel, characterized in that the vacuum chamber of the device is detachably assembled from a base plate (4) and from a vacuum pressure vessel (5).

11. Device according to one of the preceding claims, characterized in that that the base plate (4) has on its upper side a component (14) which can be brought into operative contact with the vacuum chamber and for this purpose has connections for an evacuation of the vacuum chamber and for a supply of auxiliary gas into the vacuum chamber as well as a vacuum pressure sensor (VP1), wherein an opening is provided in the base plate (4) in which a filling adapter (2) is supported, wherein the base plate (4) has at least two opposing closure elements at end sections for a operative connection with the vacuum pressure vessel (5) and wherein the base plate (4) has on its underside at least a seal (6) and a centering (7) for a operative connection with the vacuum pressure vessel (5) as well as a fixing device (8) with a clamping drive (9) for fixing the position of the assembly (1) to be filled.

12. Device according to one of the preceding claims, characterized in that the locking elements on the base plate (4) are designed as locking pawls and have a contour that is congruent to the contour on the associated section of the vacuum pressure vessel (5). 13 Device according to one of the preceding claims, characterized in that the seal (6) on the base plate (4) is designed with two parallel round seals which are arranged in a groove on the underside of the base plate (4).

14. Device according to one of the preceding claims, characterized in that the centering elements (7) on the base plate (4) are designed as locking pins and have a contour that is congruent to the contour of an opening on the associated section of the vacuum pressure vessel (5).

15. Device according to one of the preceding claims, characterized in that the vacuum pressure vessel (5) has a U-shaped cross-section, wherein a flange-like circumferential projection is formed on the upper end section of the side walls, which has an outwardly leading and an inwardly leading section, wherein the outwardly leading section has a contour that is congruent to the contour of the locking pawls on the locking elements on the associated section of the base plate (4) and wherein the inwardly leading section has openings that are congruent to the contour of the locking pins (7) on the associated section of the base plate (4).

16. Device according to claim 15, characterized in that that the vacuum pressure vessel (5) is equipped on the upper side of its base surface with interchangeable fittings (12) for fixing the position of the assembly (1) to be filled.

17. Device according to claim 15, characterized in that a batch-specific volume ballast (13) can be arranged on the upper side of the bottom surface of the vacuum pressure vessel (5).

18. Device according to claim 17, characterized in that the batch-specific volume ballast (13) is designed such that the free residual volume within the vacuum pressure vessel (5) is largely reduced.

19. Method for pressure testing, evacuation and / or filling an assembly (1) comprising the following steps: - Providing a device (A, B, C, D) with an adapter (2), in particular a device (A, B, C, D) according to one of the preceding claims, for receiving an assembly (1) to be treated; - Inserting the assembly to be treated (1) into the device (A, B, C, D); - Closing the device (A, B, C, D) such that the device (A, B, C, D) forms a fluid-tight chamber (15) towards the environment in which the assembly (1) is arranged; - Filling the assembly (1) with a fluid at a defined overpressure or volume over a predefined time, up to a predefined volume and / or pressure.

20. The method of claim 19, comprising the following further method steps: - Fluid-tight coupling of the adapter (2) with an opening (3) of the assembly (1) before the assembly (1) is filled with a defined overpressure; - Applying a defined first negative pressure to the chamber (15) and a defined second negative pressure to the assembly (1) such that a nearly constant pressure ratio is established between the pressure in the chamber (15) and the pressure inside the assembly (1) before the assembly (1) is filled with a defined positive pressure; - Preferably measuring the pressures present in the chamber (15) and in the assembly (1) before the assembly is filled with a defined overpressure; - Subsequent filling of the chamber (15) with an auxiliary gas at a defined overpressure depending on the pressure specified or measured in the assembly (1) such that a predefined overpressure exists in the assembly (1) relative to the chamber (15), - wherein, after completion of the specified filling of the assembly (1), the auxiliary gas of the chamber (15) is emptied and the pressure of the chamber is adjusted to ambient pressure.

21. Method according to claim 20, wherein after measuring the pressures in the chamber (15) and in the assembly (1) the following further steps are carried out: - Changing the set pressure in the chamber (15) and / or the assembly (1); - Remeasuring the set pressures in the chamber (15) and / or the assembly (1); - Comparing the measured pressures of the chamber (15) and / or the assembly (1) before and after the pressure change.

22. Method according to one of claims 19 - 21, comprising the following further steps: - Providing a first mold (12); - Inserting the first molded part (12) into the device (A, B, C, D), wherein the first molded part (12) is aligned with a molded part receptacle (5.1) of the device (A, B, C, D); - Gripping a component assembly (1) to be treated with the fixing device (8) of the device (A, B, C, D) from a storage location; - Inserting the gripped assembly (1) into the device (A, B, C, D) such that the assembly (1) is aligned for a fluid-tight coupling with the adapter (2) using the first fitting (12).

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