Device for storing a fluid and system for storing a fluid

Abstract

The invention relates to a device (100) for storing a fluid (1), comprising: - at least one storage unit (10) for storing the fluid (1), wherein the at least one storage unit (10) comprises at least one sorbent (20), - at least one fluid connection (30) for supplying and discharging the fluid, - at least one media connection (40) for supplying and discharging a heat transfer medium, wherein the device (100) is mobile as well as a system (200) for storing a fluid.

Description

[0001] The invention relates to a device for storing a fluid and a system for storing a fluid.

[0002] Liquid hydrogen is used as an energy carrier in various industries, such as the automotive, aerospace, and steel industries. In a hydrogen tank, heat generation, particularly from heat input, can cause some of the liquid hydrogen to evaporate. This evaporated portion can reach up to 3% of the tank volume per day. Furthermore, up to 15% of the tank volume can evaporate during the initial filling process. This evaporated portion is also known as boil-off and can lead to a pressure increase in the tank. To prevent impermissible overpressure, the evaporated portion can be released into the environment or combusted in a controlled manner using a flare system.

[0003] However, releasing the vaporized components into the environment or burning them reduces energy efficiency and poses a safety risk when using hydrogen as an energy carrier. Furthermore, the long-term release of hydrogen into the environment can be harmful to the climate.

[0004] The technical problem is to create a device and a system for storing a fluid that increases energy efficiency and safety in the use of hydrogen as an energy carrier.

[0005] The solution to the technical problem is provided by the articles with the features of the independent claims. Further advantageous embodiments of the invention are described in the dependent claims.

[0006] A device for storing a fluid is proposed, comprising: - at least one storage unit for storing, in particular for solid storage, the fluid, wherein the at least one storage unit comprises at least one sorbent, - at least one fluid connection for supplying and removing the fluid, - at least one media connection for supplying and discharging a heat transfer medium, the device is designed to be mobile.

[0007] A further proposal is made for a system for storing a fluid, comprising at least one device according to an embodiment described in this disclosure. The system is particularly designed to fill the at least one device with the fluid and / or to extract the fluid from the at least one device. The system may have a console into which the at least one device can be received. The system is particularly designed to receive multiple devices, for example, by having the console capable of receiving multiple devices. The system may include a heat exchanger for cooling or heating the device. The heat exchanger can be connected to the device via the media connection. The system may be configured to further process the stored fluid. For this purpose, the system may include a consumer, such as a fuel cell or a reliquefaction plant. The consumer may, for example, be a...The device is connected via the fluid connection to convert the stored fluid into electricity. The system can, for example, be designed as a vehicle or comprise a vehicle. Alternatively, the system can be stationary, meaning it can be permanently installed.

[0008] The technical effects and advantages mentioned in this disclosure for the device naturally also extend to the plant and vice versa.

[0009] The device has the advantage that the fluid can be stored in solid form. Due to this solid form, the fluid does not escape, or only minimally, even if the device is damaged. Furthermore, storing the fluid does not require exceptional pressure or temperature levels, such as those needed for cryogenic liquid hydrogen storage or gaseous storage in a high-pressure tank. The device thus improves the safety of fluid storage. This advantage is achieved technically by the sorbent's ability to absorb the fluid's atoms into its volume or adsorb them onto its surface, thereby storing them in solid form. For example, the fluid's atoms are absorbed into the atomic lattice structure, forming a so-called metal hydride.

[0010] Furthermore, the device has the advantage that the energy and time required for filling or removing the fluid are reduced compared to other storage methods such as cryogenic liquid hydrogen storage or gaseous storage in a high-pressure tank. This is because, due to the previously described chemical-physical reaction between the fluid and the sorbent, heat can be released during filling. Conversely, heat can be required when removing the fluid from the sorbent. This advantage is achieved technically by supplying the heat transfer medium used for cooling or heating the device directly to the device via the media connection. This allows the device to be cooled in a controlled manner during filling and heated in a controlled manner when removing the fluid from the sorbent.

[0011] Furthermore, the device has the advantage of being transportable due to its mobile design. The device can be mobile because it is designed, for example, as a container. The device can also be referred to as a cartridge. The device can be located, for example, in a vehicle. The device can be, for example, part of an automobile, an aircraft, a rail vehicle, or a watercraft. The device can be mobile because, for example, it is designed to be interchangeable. For replacement, the device can, for example, be removed from the system or vehicle and replaced with an empty device. In particular, the device can be designed to be replaced when its maximum fill level is reached.

[0012] The fluid can be gaseous hydrogen. The device can, for example, be connected to a liquid hydrogen tank via fluid technology in order to store the gaseous hydrogen produced during evaporation – i.e., the boil-off fluid – from the liquid hydrogen tank.

[0013] The storage unit can, for example, have a housing in which the sorbent is arranged. The housing can be made of steel or aluminum, for example. The housing can be bottle-shaped or cuboid. The housing of the storage unit can form an outer surface of the device. The sorbent can be in powder form or in compressed form, for example, as a pellet. In this way, the storage unit's volume can be optimally filled with the sorbent. The storage unit can have at least one cavity for supplying the fluid. Furthermore, the cavity allows the sorbent to expand when it absorbs the fluid. The cavity can be a residual volume of the storage unit—for example, a residual volume in which the sorbent is not present due to a corresponding filling with sorbent—and / or can be formed by one or more recesses in the sorbent.The filling level of the storage unit with sorbent can be, for example, between 50 and 70 percent, and particularly between 50 and 65 percent. At such a filling level, a suitable porosity of the sorbent is achieved, thus ensuring sufficient permeability for the fluid to flow to the sorbent. If the cavities are formed as one or more recesses, these can extend through the sorbent in a bore-like manner, thereby forming a channel for the fluid. The recesses can also be designed as porous lances, which prevent the cavity from becoming clogged by the sorbent material and thus ensure the fluid flow. The sorbent can be cylindrical in shape. The sorbent can also be designed with a central hole as a recess. The reaction between the fluid and the sorbent described above can, for example, originate from within the cavity.The sorbent can be, for example, a hydride-forming alloy. The sorbent can contain at least one of the following elements: lanthanum, nickel, aluminum, titanium, and / or iron. In particular, the sorbent contains elements in the following combinations: lanthanum and nickel, or lanthanum, nickel, and aluminum, or titanium and iron. These combinations can form an alloy. Naturally, the sorbent can contain other components. Upon reaction with the fluid, the sorbent can form a metal hydride. Other suitable materials are known to those skilled in the art.

[0014] The fluid connection allows for repeated establishment and disconnection of a fluid connection between the device and, for example, the hydrogen tank mentioned earlier. The fluid connection can include a supply valve and a discharge valve. Alternatively, the fluid connection can be designed so that the supply and discharge of the fluid occur via a single valve. This is because the fluid does not necessarily have to be supplied and discharged simultaneously.

[0015] The media connection allows for repeated establishment and disconnection of a fluid connection between the device and, for example, a heat exchanger. The media connection can include a supply valve and a discharge valve. Alternatively, the fluid connection can be designed such that the refrigerant is supplied and discharged via a single valve. This is because the refrigerant does not necessarily have to be supplied and discharged simultaneously.

[0016] The heat transfer medium can be, for example, air, water, silicone-based oil, or a water-glycol mixture. In particular, a phase-change material can also be used as a heat transfer medium. Other suitable heat transfer media are known to those skilled in the art.

[0017] The fluid connection and / or media connection is / are designed to be self-sealing. For example, the fluid connection and / or media connection has at least one self-sealing snap-fit ​​closure. The fluid connection and / or media connection is / are designed as a quick-release coupling, e.g., with a plug-in and / or locking mechanism. In particular, the device can be connected to the system or an installation location in a vehicle via the fluid connection and / or media connection without tools. This allows the device to be replaced quickly. The quick-release coupling is designed to be self-sealing.

[0018] The device has a weight in the range of 5 kg to 500 kg, preferably in the range of 25 kg to 500 kg, and more preferably in the range of 50 kg to 300 kg. A device with a weight within the aforementioned ranges offers a suitable compromise between weight and storage capacity for mobile applications, e.g., in vehicles.

[0019] The device features, in particular, at least one pressure relief valve for regulating the internal pressure by releasing fluid. This increases safety.

[0020] In one embodiment, the device is designed to circulate the heat transfer medium within the device, particularly within the at least one storage unit. This allows the device, and especially the sorbent, to be cooled or heated more quickly and uniformly. For example, the device can be connected to an outlet of a cold or heat source via the supply valve of the media connection and to an inlet of the cold or heat source via the discharge valve of the media connection to circulate the heat transfer medium. In particular, the device can have internal lines for circulating the heat transfer medium. For example, the internal lines can be arranged in the at least one cavity of the storage unit described above. This allows the heat transfer medium to circulate particularly close to the sorbent.The internal pipes can be made of a fluid-tight material - for example, steel or aluminum - to avoid direct contact between the heat transfer medium and the fluid or sorbent.

[0021] In one embodiment, the device further comprises at least one connecting element, wherein at least one of the following connections with at least one further device can be made by means of the at least one connecting element: - a fluid connection with at least one fluid port of at least one further device to transfer the fluid from the device to the further device or vice versa, - a refrigerant connection with at least one media connection of the at least one further device to transfer the heat transfer medium from the device to the further device or vice versa, and / or - a positive-locking and / or force-locking connection with at least one other device, for example to mechanically stabilize the connected devices.

[0022] In this way, the devices can be connected to form a modular arrangement. Such a modular arrangement can be scaled as required. The fluid connection and / or the media connection of the device can, for example, be connected to the connecting element via the internal lines described above in order to convey the fluid or heat transfer medium. The additional device can be identical in construction to the device in question—that is, the additional device can be designed according to an embodiment of the device described in this disclosure.

[0023] In one embodiment, the at least one connecting element is arranged on a side of the device opposite the at least one fluid connection and / or the at least one media connection. In this way, the device can be arranged, for example, in a series connection of several devices, either plugged in or stacked. The side of the device on which the fluid connection and / or the media connection is arranged can be a top side of the device. In particular, the fluid connection and the media connection are arranged on a common side of the device. The side of the device on which the connecting element is arranged can be a bottom side of the device. The connecting element can, in particular, be arranged in a bulge of an inwardly curved bottom side of the device. In this way, the device can, for example, stand on its bottom side during transport without the connecting element being damaged.Additionally, the top and / or bottom may have Poka-Yoke elements to prevent incorrect alignment of the devices when inserting or stacking them.

[0024] In one embodiment, the device is configured to determine at least one state variable of the device by at least one of the following measurements: - a pressure measurement, for example to measure the pressure in the storage unit, - a temperature measurement, e.g. to measure a temperature in the storage unit, in particular the temperature of the sorbent and / or the temperature of the heat transfer medium, and / or - a mass flow measurement, for example to measure a mass flow through the fluid and / or media connection.

[0025] The filling or dispensing of fluid from the device can be controlled based on a specific state variable(s). The at least one state variable is, for example, pressure, temperature, and / or mass flow rate. The device can include at least one sensor and at least one microcontroller for determining the state variable. The sensor can be, for example, a pressure sensor, a temperature sensor, and / or a mass flow rate sensor. Naturally, the device can include at least one separate sensor for each measurement. The separate sensors can be arranged at different locations within the device. For example, one sensor can be located in the storage unit, particularly in a cavity of the storage unit, to measure pressure and / or temperature. A further separate sensor can be located, for example, in the at least one fluid connection or media connection to measure mass flow rate.The device may include a control unit, e.g., a microcontroller. The control unit may be configured to control the supply and discharge of fluid and / or heat transfer medium depending on at least one specific state variable. This specific state variable may, for example, be an actual value used to approximate a known target value of pressure, temperature, and / or mass flow rate, which is provided for controlling the device.

[0026] In one embodiment, the device is designed to assign the specific at least one state variable to at least one of the following parameters: - a filling quantity and / or - a number of fillings.

[0027] This allows for better planning of device replacement (e.g., when the device reaches its maximum fill level) or maintenance (e.g., when a predetermined number of filling cycles has been reached). The assignment can be made, for example, by linking the specific state variable to the parameter. For instance, a mass flow measurement curve can be linked to the fill level parameter and / or the number of filling cycles. This can be achieved, in particular, using a predefined assignment rule.

[0028] In one embodiment, the device further comprises at least one communication device for communicating with an external control device. In this way, for example, the at least one specific state variable and / or parameters can be communicated to the external control device and / or control commands can be received from the external control device. The communication is, in particular, wireless. The communication device can, for example, include a battery, an electromagnetic transmitter, and / or a receiver. The external control device can, for example, include an associated receiver and / or transmitter.

[0029] The external control device can control the supply or discharge of fluid and / or heat transfer medium based on communication – that is, specifically depending on certain state variables and / or parameters. For example, the external control device controls a mass flow rate of the fluid and / or heat transfer medium via a compressor or pump. Furthermore, the external control device is specifically designed to control multiple devices simultaneously, for example, when these are connected in a modular arrangement. Naturally, the communicated state variables and / or parameters can be permanently stored in the external control device, for example, in a database. The system can include the external control device.

[0030] In one embodiment, the device further comprises at least one communication element for passive communication. In this way, the device can be uniquely identified, for example, by scanning the communication element. The communication element can be, for example, an RFID chip, a barcode, or a QR code. The device can be assigned a unique identification code, which is encoded in the communication element. By scanning the communication element, data from the previously described database can be quickly accessed, for example, without requiring active communication via the communication device.

[0031] In one embodiment, the device further comprises at least one of the following elements: - at least one handle element to make it easy to grasp the device, e.g. with the hands, - at least one eyelet to be able to hook the device onto a hook, for example, - at least one ferromagnetic element to allow the device to be lifted, e.g. with a magnet, - at least one threaded element to allow the device to be screwed down, e.g. during transport or operation, - at least one guide element to position the device, e.g. with the help of a guide rail, - at least one rolling element to enable the device to be rolled across the floor, e.g. during transport, - at least one protective element to protect the device from damage.

[0032] In this way, the mobility and safety of the device can be improved. The elements described can, for example, be arranged on an outer surface of the device. In particular, part of the device can be ferromagnetic, thus forming the ferromagnetic element. To lift the device using the magnet, a section of the ferromagnetic element can be flattened. This allows the magnet to dock with the device more easily.

[0033] The invention is explained in more detail using exemplary embodiments. The figures show: Fig. 1-A a schematic representation of an embodiment of a plant, Fig. 1-B a schematic representation of another embodiment of a plant, Fig. 2-A a schematic representation of another embodiment of a plant, Fig. 2-B a schematic representation of another embodiment of a plant, Fig. 3-A a schematic representation of an embodiment of a device, Fig. 3-B a schematic representation of another embodiment of a device, Fig. 3-C a schematic representation of another embodiment of a device, Fig. 3-D a schematic representation of another embodiment of a device, Fig. 3-E a schematic representation of another embodiment of a device from a top view, Fig. 3-F a schematic representation of another embodiment of a device and Fig. 3-G a schematic representation of another embodiment of a device.

[0034] In the following, identical reference symbols denote elements with the same technical characteristics.

[0035] Fig. Figure 1-A shows a schematic representation of an embodiment of system 200. System 200 can, for example, be mounted in a vehicle (not shown) and thus be part of the vehicle. The vehicle can, for example, be a hydrogen-powered truck or car.

[0036] The system 200 comprises a hydrogen tank 210 and a consumer 250, e.g., a fuel cell, for operating the vehicle. The hydrogen tank 210 is filled with liquid hydrogen 2. The hydrogen 2 is used to operate the consumer 250. This is in Fig. 1-A is marked by an arrow with a dashed line.

[0037] In hydrogen tank 210, some of the hydrogen 2 evaporates – for example, due to heat input – forming a gaseous fluid 1. This evaporation process is also known as boil-off. The fluid 1 is in Fig. 1-A is characterized by bubbles. The system includes a pressure relief valve and optionally a compressor 220 to drain the fluid 1 from the hydrogen tank 210.

[0038] The system 200 comprises several devices 100, 110, 120, which serve to store fluid 1. The devices 100, 110, 120 are designed as bottle-shaped containers and are connected to each other in series. Of course, the devices 100, 110, 120 can also be arranged in parallel. The devices 100, 110, 120 shown are identical in construction. Fig. Figures 1-A each depict different aspects of devices 100, 110, and 120, without any difference in the actual construction of the devices 100, 110, and 120. This simplified representation serves for clarity.

[0039] The system 200 comprises an external control device 300, which is configured to control the supply and discharge of fluid 1 and / or a heat transfer medium into the devices 100, 110, and 120. The external control device 300 can, for example, include a microcontroller for control and communicate wirelessly with the components of the system 200, in particular the devices 100, 110, and 120, via a receiver and transmitter. This will be explained in more detail below.

[0040] The device 100 comprises a fluid connection 30 designed as a self-sealing valve, through which fluid 1 is supplied to the device 100 from the hydrogen tank 210. The supplied fluid 1 can also be discharged via the fluid connection 30 if necessary. Furthermore, the device 100 comprises a media connection 40 with a supply valve 41 and a discharge valve 42. The fluid connection 30 and the media connection 40 are arranged on a top surface 98 of the device 100.

[0041] For the permanent storage of the supplied fluid 1, the device 100 comprises a storage unit 10. The supplied fluid 1 can be directed from the fluid connection 30 into the storage unit 10 via a line 31. A sorbent 20 is arranged in the storage unit 10, which, for example, comprises a hydride-forming metal alloy of lanthanum, nickel, and aluminum. The sorbent 20 can be in powder form or in the form of a pressed pellet. The sorbent 20 can be cylindrical with a central hole. This hole forms a cavity 15 in the storage unit into which the gaseous fluid 1 can be introduced. The cavity 15 can also be designed as a porous lance, which prevents the sorbent 20 from clogging the cavity 15 and thus ensures the supply of the fluid 1. The sorbent 20 can react with the absorbed fluid 1, so that, for example, the atoms of the fluid 1 are absorbed by the sorbent 20 orThey will be adsorbed. This can lead to heat generation in storage unit 10.

[0042] To selectively cool the storage unit 10 during the reaction, the system includes a heat exchanger 245. The heat exchanger 245 is, for example, part of a thermal management system 240 of the system 200. The thermal management system 240 can, for example, include a heat pump or be designed as such. The heat exchanger 245 can cool the heat transfer medium—for example, a water-glycol mixture—to a target temperature, for example, by dissipating heat to the ambient air. The system 200 includes a pump 230 to supply the cooled heat transfer medium to the device 100 via the media connection 40. This allows the storage unit 10 to be cooled to the target temperature.

[0043] The cooling of the device 100 can also be supported by a fan (not shown). This fan can, for example, be arranged in the system 200 such that air flows around the device 100 and / or the heat exchanger 245. The surfaces of the device 100 and / or the heat exchanger 245 can be enlarged by means of fins to increase heat transfer to the ambient air.

[0044] The device 100 further comprises a connecting element 50. The connecting element 50 is arranged on a side 99 of the device 100 opposite the fluid connection 30 and the media connection 40. The side 99 is a bottom side of the device 100 and is thus arranged opposite the top side 98 of the device 100.

[0045] The side 99 is curved inwards to create a positive-locking connection with the further device 110 by means of the connecting element 50 of the device 100. This is because the inwardly curved side 99 of the device 100 fits positively onto a top surface 98 of the further device 110.

[0046] The connecting element 50 is also designed as a counterpart to the fluid connection 30 and the media connection 40. Therefore, a fluid connection can be established with a fluid connection 30 of the further device 110 by means of the connecting element 50, in order to transfer the fluid 1 from the device 100 to the further device 110. In this way, the further device 110 can be used to store the fluid 1 when, for example, a maximum fill level of the device 100 is reached.

[0047] Additionally, a refrigerant connection can be established with a media connection 40 of the further device 110 by means of the connecting element 50 of the device 100, in order to direct the heat transfer medium from the device 100 to the further device 110. In this way, the heat transfer medium supplied to the device 100 also circulates in the device 110.

[0048] The further device 110 naturally also includes a connecting element 50 to establish a similar connection with the further device 120. In this way, the heat transfer medium can circulate through all devices 100, 110, 120.

[0049] Within the devices 100, 110, 120, the heat transfer medium circulates in internal lines 45. This is in Fig. Figure 1-A is shown only for device 110; however, each of the devices 100, 110, and 120 has the internal lines 45. The internal lines 45 are arranged, for example, in a meandering or spiral pattern to achieve the most effective cooling and heating of the devices 100, 110, and 120. The internal lines 45 can, for example, run in further cavities or bores (not shown) of the sorbent 20.

[0050] Each of the devices 100, 110, 120 comprises a multi-way valve 46 to control the circulation of the heat transfer medium through the lines 45. Fig. In the second device 110, the circulation is controlled by the multi-way valve 46 such that the heat transfer medium is not returned directly to the device 100, but is routed via the connecting element 50 to the second device 120. In the second device 120, the circulation can, however, be routed back to the second device 110 and from there to the device 100, since the device 120 is not connected to any other device. The external control device 300 can be configured to control the multi-way valve 46. Alternatively, the multi-way valve 46 can be controlled by an internal control unit (not shown) of the devices 100, 110, and 120.

[0051] Devices 100, 110, and 120 are each configured to determine at least one state variable by measuring pressure, temperature, or mass flow. Each device 100, 110, or 120 can have multiple sensors for this purpose, i.e., a pressure sensor, a temperature sensor, and a mass flow sensor. For clarity, only one sensor 80 is shown. Sensor 80 can, for example, be a mass flow sensor. Sensor 80 can determine, for example, the mass flow rate through the fluid connection 30 of device 120 as a state variable.

[0052] The defined state variable can then be assigned to a fill quantity of the device 120. This simplifies the replacement of the device 120 when, for example, it has reached its maximum fill quantity. Alternatively or cumulatively, the defined state variable can be assigned to a number of fillings. This simplifies the maintenance of the device 120 when, for example, a maximum number of fillings has been reached.

[0053] The specific state variable can be displayed by a display 90 of the device 120. Display 90 can, for example, act as a pressure gauge to show the pressure in the storage unit 10. Of course, display 90 can also show other state variables, such as the temperature of the device 120 or a parameter such as the fill level of the device 120.

[0054] Devices 100, 110, and 120 each include a communication device 60. This allows, for example, a state variable determined by the previously described sensors, such as pressure, temperature, and / or mass flow, to be communicated to the external control device 300. The determined state variable can be an actual value for controlling devices 100, 110, and 120. Depending on the actual value, the external control device 300 can, for example, generate a control command to control the compressor 220 and / or the pump 230, thereby approximating the actual value to a pre-known setpoint.

[0055] Alternatively or cumulatively, the system 200 can have an external sensor (not shown) which can be located outside the devices 100, 110, 120. The external sensor can, for example, be a mass flow sensor. For instance, the external sensor can be located between the hydrogen tank 210 and the fluid connection 30 of the device 100. In this way, the total mass flow of the fluid 1 drawn from the hydrogen tank 210 can be determined as a state variable.

[0056] Furthermore, each of the devices 100, 110, and 120 is equipped with a communication element 70 designed as an RFID chip or barcode. By scanning the communication element 70, a unique identification code of the respective device 100, 110, or 120 can be passively communicated.

[0057] Devices 100, 110, and 120 each have at least one pressure relief valve (not shown) for regulating the internal pressure in the storage unit 10. This increases safety.

[0058] Fig. Figure 1-B shows a schematic representation of another embodiment of a system 200. In contrast to Fig. In 1-A, the devices 100, 110, 120 are not filled with a fluid 1, but the fluid 1 is already stored in the devices 100, 110, 120.

[0059] The fluid 1 stored in devices 100, 110, 120 is used to power a consumer 250, e.g., a fuel cell. A fuel cell, acting as consumer 250, can generate electricity using the fluid 1, which can then be stored, for example, in a battery (not shown). Consumer 250 can be operated cumulatively using additional hydrogen from a hydrogen reservoir (not shown). This is useful, for example, if there is not yet enough fluid 1 available from devices 100, 110, 120 to operate consumer 250. This is because, in order to release the fluid 1 from the sorbents 20 of devices 100, 110, 120, the devices 100, 110, 120 must be heated to a temperature sufficient for the release of the fluid 1. Consumer 250 can also heat up during operation. This waste heat can be used to heat the devices 100, 110, 120.To transfer the waste heat from consumer 250 to a heat transfer medium, the system 200 includes a heat exchanger 245. Furthermore, the system 200 includes a pump 230 to supply the heated heat transfer medium to the device 100. This efficiently provides the waste heat from consumer 240 for the extraction of fluid 1 and simultaneously cools consumer 250. An optional compressor 220 can be used to increase the pressure of the fluid 1 extracted from the sorbents 20 to meet the required inlet pressure of consumer 250.

[0060] The heating of devices 100, 110, 120 can also be assisted by a fan (not shown). This fan can, for example, be arranged in the system 200 such that air flows around the consumer 250 and is then directed onto devices 100, 110, 120.

[0061] Fig. Figure 2-A shows a schematic representation of another embodiment of a system 200. The system 200 comprises one or more devices 100, 110, 120 arranged in a series and / or parallel circuit and is stationary. The system 200 can, for example, be located on airport premises. Fig. In system 2-A, a tanker truck 400 refuels a parked aircraft 500, which also has a hydrogen tank 210, from a hydrogen tank 210. Boil-off fluid 1 is produced in the hydrogen tanks 210 during the refueling process. System 200 includes a central connection to supply the fluid 1 to devices 100, 110, and 120.

[0062] Fig. Figure 2-B shows a schematic representation of another embodiment of a system 200. In contrast to Fig. 2-A is the one in Fig. However, the system 200 shown in Figure 2-B is not stationary, but mobile. In this way, the system 200 can be moved, for example, to the parked aircraft 500. The system 200 can be designed, for example, as a vehicle, in particular as a trailer. As a trailer, the system 200 can be moved, for example, with the help of the tanker truck 400 or another vehicle.

[0063] Fig. Figure 3-A shows a schematic representation of an embodiment of a device 100 with a handle element 101, which is arranged on a top surface 98 of the device 100. The handle element 101 facilitates the transport of the device 100.

[0064] Fig. Figure 3-B shows a schematic representation of another embodiment of a device 100 with two eyelets 102 arranged on the upper surface 98 of the device 100. The eyelets 102 facilitate the removal, insertion, and transport of the device 100 by means of aids such as robots or cranes.

[0065] Fig. Figure 3-C shows a schematic representation of another embodiment of a device 100 with a ferromagnetic element 103 and a threaded element 104, which are arranged on the top 98 of the device 100. The device 100 can be lifted, for example, by means of a magnet (not shown) via the ferromagnetic element 103. Alternatively, the device can be moved via the ferromagnetic element 103 in a system 200 (see Figure 3-C). Fig. 1-A, Fig. 1-B, Fig. 2-A, Fig. 2-B) can be magnetically fixed. The system 200 can have a magnet for this purpose. Furthermore, the device 104 can be screwed to a bracket (not shown) of the system 200 via the threaded element 104. The ferromagnetic element 103 and the threaded element 104 thus facilitate the arrangement and transport of the device 100.

[0066] Fig. Figure 3-D shows a schematic representation of another embodiment of a device 100 with two guide elements 105 arranged along a lateral surface 97 of the device 100. The guide elements 105 may have or be designed as poka-yoke elements, thus preventing incorrect alignment of the device 100.

[0067] Fig. 3-E shows a schematic representation of the in Fig. A further embodiment of the device 100 is shown in 3D from a top view. The guide elements 105 have a dovetail geometry, so that the device 100 can be positively fixed in corresponding rails, e.g., during transport.

[0068] Fig. Figure 3-F shows a schematic representation of another embodiment of a device 100 with two roller elements 106 designed as rollers. The roller elements 106 are arranged on one side 99 of the device 100, which is a bottom side. The device 100 can be easily pushed, for example, across a floor by means of the roller elements 106.

[0069] Fig.Figure 3-G shows a schematic representation of another embodiment of a device 100 with two protective elements 107, 108. The protective elements 107, 108 can be made of rubber or another deformable material for absorbing impact energy. The protective element 107 can be folded over an upper part of a lateral surface 97 of the device 100, so that the protective element 107 abuts a top surface 98 of the device 100. The protective element 108 can be folded over a lower part of the lateral surface 97 of the device 100, so that the protective element 108 is flush with a lower side 99 of the device 100. The protective elements 107, 108 protect the device 100 from damage, e.g., during transport. Reference symbol list 1 Fluid 2 Hydrogen 10 storage units 15 Cavity 20 sorbents 30 Fluid connection 40 Media connection 41 Supply valve 42 Drain valve 45 lines 46 Multi-way valve 50 connecting element 60 Communication device 70 communication elements 80 Sensor 90 display 97 lateral surface area 98 Top Page 99 100 Device 101 Handle element 102 eyelets 103 ferromagnetic element 104 Threaded element 105 Guide element 106 rolling element 107 Protective element 108 additional protective elements 110 additional devices 120 more devices 200 plant 210 hydrogen tank 220 compressors 230 pump 240 Thermal Management System 245 heat exchangers 250 consumers 260 connection 300 external control device 400 tank trucks 500 airplanes

Claims

[1] Device (100) for storing a fluid (1), comprising: - at least one storage unit (10) for storing the fluid (1), wherein the at least one storage unit (10) comprises at least one sorbent (20), - at least one fluid connection (30) for supplying and discharging the fluid, - at least one media connection (40) for supplying and removing a heat transfer medium, wherein the device (100) is designed to be mobile. [2] Device (100) according to claim 1, characterized by , that the device (100) is designed to allow the heat transfer medium to circulate within the device (100). [3] Device (100) according to any one of the preceding claims, characterized by, that the device (100) further comprises at least one connecting element (50), wherein at least one of the following connections with at least one further device (110, 120) can be made by means of the at least one connecting element (50): - a fluid connection with at least one fluid port (30) of at least one further device (110), - a refrigerant connection with at least one media connection (40) of at least one further device (110, 120), and / or - a positive-locking and / or force-locking connection with the at least one further device (110). [4] Device (100) according to claim 3, characterized by , that the at least one connecting element (50) is arranged on a side (99) of the device (100) opposite the at least one fluid connection (30) and / or the at least one media connection (40). [5] Device (100) according to any one of the preceding claims, characterized by , that the device (100) is configured to determine at least one state variable of the device (100) by at least one of the following measurements: - a pressure measurement, - a temperature measurement and / or - a mass flow measurement. [6] Device (100) according to claim 5, characterized by , that the device (100) is designed to assign the certain at least one state variable to at least one of the following parameters: - a fill quantity and / or - a number of fillings. [7] Device (100) according to any one of the preceding claims, characterized by that the device (100) further comprises at least one communication device (60) for communication with an external control device (300). [8] Device (100) according to any one of the preceding claims, characterized by, that the device (100) further comprises at least one communication element (70) for passive communication. [9] Device (100) according to any one of the preceding claims, characterized by , that the device (100) further comprises at least one of the following elements: - at least one handle element (101), - at least one eyelet (102), - at least one ferromagnetic element (103), - at least one threaded element (104), - at least one guide element (105), - at least one rolling element (106), - at least one protective element (107, 108). [10] System (200) for storing a fluid (1), comprising at least one device (100) according to any one of claims 1 to 9.

Images