Storage system for storing a gaseous medium, preferably hydrogen, fuel cell system, hydrogen combustion engine system, fuel cell-powered vehicle, hydrogen-powered vehicle

Abstract

The invention relates to a storage system (1) for storing a gaseous medium, preferably hydrogen, the storage system comprising a plurality of tank containers (41) and a medium collector block (40). The tank containers (41) are designed in the form of tubular rings and have a tubular geometry wound from high-strength plastic fibres, wherein the tank containers have a longitudinal axis (42) and are attached to the medium collector block (40) and are fixedly connected to said medium collector block (40).

Description

[0001] Description

[0002] Storage system for storing a gaseous medium, preferably hydrogen, fuel cell system, hydrogen combustion engine system, fuel cell-powered vehicle, hydrogen-powered vehicle

[0003] The invention relates to a storage system for storing a gaseous medium, for example, hydrogen. This system is used, for example, in vehicles powered by fuel cells or hydrogen combustion engines.

[0004] State of the art

[0005] Today's hydrogen tank systems for mobile applications typically consist of several tank containers, made of carbon fiber-reinforced material, for example. These are typically pressurized with a nominal hydrogen pressure of, for example, 350 bar or 900 bar. During filling, storage, or withdrawal of hydrogen during operation, temperatures below the freezing point of water (down to -40°C during withdrawal, 700 bar system) can occur in the tank.

[0006] The tank containers can also contain metallic materials, for example.

[0007] DE 10 2021 207 190 A1, for example, describes such a hydrogen tank system for mobile applications with multiple tank containers.

[0008] Due to the typical bottleneck shape of the tank containers, the mechanical design leads to complicated manufacturing and high costs. This poses potential challenges, particularly for the installation of the tank system in the underbody of a vehicle's chassis. Advantages of the invention

[0009] The device according to the invention with the characterizing features of claim 1 has the advantage, in contrast, of achieving optimal use of the available installation space through the structural design of the tank containers and of enabling installation in the underbody of the chassis of a vehicle.

[0010] For this purpose, the storage system for storing a gaseous medium, preferably hydrogen, comprises several tank containers and a medium collector block. Furthermore, the tank containers are designed in the form of pipe rings and have a tube geometry wound from high-strength plastic fibers. Furthermore, the tank containers have a longitudinal axis. Furthermore, the tank containers are attached to the medium collector block and firmly connected to this medium collector block.

[0011] This makes it easy to install the entire storage system in the underbody of a vehicle's chassis, while simultaneously minimizing the complexity of the storage system's design. Furthermore, the chassis of a battery-powered vehicle, for example, can also be used for a vehicle with hydrogen applications.

[0012] In a first advantageous further development, it is provided that the tank containers designed in the form of pipe rings together with the medium collector block have a rectangular shape in cross section.

[0013] In an advantageous development, the tank container designed in the form of tubular rings has two ends, which ends open into the medium collector block and are fixed and sealed in this medium collector block. This allows the loop-shaped tank containers to freely undergo deformations and movements caused by temperature and pressure, thereby avoiding any further constraints. In a further embodiment of the invention, it is advantageously provided that the medium collector block is cuboid-shaped, wherein the medium collector block has a height h, a width b and a depth t, which width b is formed almost parallel to the longitudinal axis of the tank container.

[0014] In an advantageous further development, it is provided that the tank containers designed in the form of pipe rings each have a different pipe ring radius r, r' and / or different pipe ring lengths l, l'.

[0015] In order to ensure optimal use of the available installation space and with regard to mechanical and thermal loads, a variation of the pipe ring radius as well as the length and / or additional pipe rings is advantageous.

[0016] In a further embodiment of the invention, it is advantageously provided that the tank containers, designed in the form of tubular rings, are arranged within the height h and width b of the medium collector block. This allows the rectangular cross-sectional shape of the entire storage system to be achieved in a structurally simple manner. This allows, for example, the use of a battery-powered vehicle chassis for a hydrogen vehicle.

[0017] In an advantageous further development, it is provided that the tank containers designed in the form of pipe rings have multi-layer structures.

[0018] In an advantageous further development, it is provided that the tank containers designed in the form of pipe rings are arranged in an interlaced and / or superimposed form.

[0019] This different design achieves a corresponding reduction in the stress on the material used. Likewise, any locally occurring stress peaks can be avoided by reducing the pipe cross-section. The storage system described is particularly suitable for use in a fuel cell system for storing hydrogen for fuel cell operation.

[0020] The storage system described is preferably suitable for the provision of hydrogen in a hydrogen combustion engine system.

[0021] The storage system described is preferably suitable for a fuel cell-powered vehicle for storing hydrogen for the operation of a fuel cell.

[0022] The storage system described is preferably suitable for the provision of hydrogen in a hydrogen-powered vehicle.

[0023] Drawings

[0024] The drawing shows exemplary embodiments of a storage system according to the invention for storing a gaseous medium, in particular hydrogen.

[0025] Fig. 1 a shows a possible embodiment of a storage system according to the invention for storing a gaseous medium in a schematic view,

[0026] Fig. 1 b shows a possible further embodiment of a storage system according to the invention for storing a gaseous medium in a schematic view,

[0027] Fig. 2a shows exemplary tank container designs of the storage system according to the invention from Fig. 1 a in a schematic view,

[0028] Fig. 2b shows exemplary tank container designs of the storage system according to the invention from Fig. 1 a in a schematic view, Fig. 3 shows a hydrogen-powered vehicle with a storage system according to the invention in a simplified schematic view,

[0029] Fig. 4 shows a hydrogen-powered vehicle with a fuel cell system or a hydrogen combustion engine system with a storage system according to the invention in a simplified schematic view.

[0030] Description of the embodiments

[0031] Fig. 1a shows a schematic view of a possible embodiment of a storage system 1 according to the invention for storing a gaseous medium, in particular hydrogen, for a consumer system 31, such as a fuel cell system 70 or a hydrogen combustion engine system 71 (see Fig. 4). The storage system 1 has a plurality of tank containers 41 and a medium collector block 40. The tank containers 41 are designed here in the form of tubular rings and have a longitudinal axis 42. Furthermore, the tank containers 41 have a tubular geometry wound from high-strength plastic fibers.

[0032] The medium collector block 40 is cuboid-shaped and has a height h, a width b, and a depth t. The width b is arranged almost parallel to the longitudinal axis 42 of the tank containers 41. The tank containers 41, designed in the form of pipe rings, each have pipe loop radii r, r' and pipe loop lengths l, l'. These are designed differently here, i.e., the tank containers 41 each have different pipe loop radii r, r' and / or different pipe loop lengths l, l'. In an alternative embodiment, these can also be the same.

[0033] Furthermore, the tank containers 41 are attached to the medium collector block 40 and firmly connected thereto. The loop-shaped tank containers 41 each have two ends 43, 44, which open into the medium collector block 40 and are fixed and sealed therein. The tank containers 41 formed in pipe rings have multi-layer structures. The tank containers 41 formed in the form of pipe rings are arranged within the height h and the width b of the medium collector block 40. a possible further embodiment of an inventive

[0034] Storage system for storing a gaseous medium in a schematic view. It essentially corresponds to the exemplary embodiment from Fig. 1a, with the difference that in this exemplary embodiment, the tank containers 41 designed in the form of tubular rings are arranged in an interlaced and / or superimposed manner. Fig. 2b and Fig. 2b show exemplary tank container designs of the storage system 1 according to the invention from Fig. 1a in a schematic view.

[0035] These show the tank containers 41 formed in pipe rings in multi-layer

[0036] Structures and in an interlaced and / or superimposed arrangement.

[0037] Fig. 4 shows, by way of example, a hydrogen-powered vehicle 73 with a fuel cell system 70, a fuel cell-powered vehicle 72, or a hydrogen combustion engine system 71 as a consumer system 31 with a storage system 1 according to the invention in a simplified schematic view. In Fig. 3, the storage system 1 is integrated into the underbody of the chassis of a vehicle.

Claims

Claims 1. Storage system (1) for storing a gaseous medium, preferably hydrogen, with a plurality of tank containers (41) and a medium collector block (40), characterized in that the tank containers (41) are designed in the form of pipe rings and have a pipe geometry wound from high-strength plastic fibers, wherein the tank containers (41) have a longitudinal axis (42) and are attached to the medium collector block (40) and are firmly connected to this medium collector block (40).

2. Storage system (1) according to claim 1, characterized in that the tank containers (41) designed in the form of pipe rings together with the medium collector block (40) have a rectangular shape in cross section.

3. Storage system (1) according to claim 1 or 2, characterized in that the tank container (41) designed in the form of pipe rings has two ends (43, 44) which ends (43, 44) are inserted into the medium collector block (40) and are fixed and sealed in this medium collector block (40).

4. Storage system (1) according to claim 1, 2 or 3, characterized in that the medium collector block (40) is cuboid-shaped, wherein the medium collector block (40) has a height h, a width b and a depth t, which width b is almost parallel to the longitudinal axis (42) of the tank containers (41) is formed.

5. Storage system (1) according to the preceding claim, characterized in that the tank containers (41) designed in the form of pipe rings each have a different pipe ring radius r, r' and / or different pipe ring lengths l, l'.

6. Storage system (1) according to claim 4 or 5, characterized in that the tank containers (41) designed in the form of pipe rings are arranged within the height h and width b of the medium collector block (40).

7. Storage system (1) according to one of the preceding claims, characterized in that the tank containers (41) designed in the form of pipe rings have multi-layer structures.

8. Storage system (1) according to one of claims 1 to 6, characterized in that the tank containers (41) designed in the form of pipe rings are arranged in an interlaced and / or superimposed form.

9. Fuel cell system (70) with a storage system (1) for storing hydrogen for the operation of a fuel cell according to one of claims 1 to 8.

10. Hydrogen combustion engine system (71) with a storage system (1) for providing hydrogen according to one of claims 1 to 8.

11. A fuel cell-powered vehicle (72) comprising a storage system (1) for storing hydrogen for operating a fuel cell according to one of claims 1 to 8.

12. Hydrogen-powered vehicle (73) with a storage system (1) for providing hydrogen according to one of claims 1 to 8.

Images