Design method of variable-diameter compatible modular hydrogen storage and hydrogen exchange integrated system

Abstract

The invention relates to a design method of a variable-diameter compatible modular hydrogen storage and hydrogen exchange integrated system. The design method comprises the following steps: step 1, setting the integrated system to be composed of a plurality of groups of hydrogen storage modules; 2, designing a connecting support structure; 3, unit type hydrogen storage modules are designed, each unit type hydrogen storage module is formed by connecting a gas cylinder and a gas cylinder base in a one-to-one mode, the diameter of the gas cylinder base is adjustable, the gas cylinder is fixed to the gas cylinder base, and the gas cylinder base of each unit type hydrogen storage module is connected and positioned with the connecting and supporting structure; 4, when the actual demand of the user for the hydrogen storage amount is slightly larger than N times of the use volume of the gas cylinder, a variable-diameter compatible module is added, the same gas cylinder base is adopted for the variable-diameter compatible module, and the variable-diameter compatible module is connected with a small-specification gas cylinder. According to the design method, the independent hydrogen storage modules are assembled in different combinations to meet the requirements of different vehicle types and different endurance mileages, and repeated design and repeated machining are not needed, so that the design and machining cost is reduced.

Description

Technical Field

[0001] The invention relates to a design method for a variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system, belonging to the technical field of hydrogen storage. Background Art

[0002] The existing design idea is to design the gas cylinder frame assembly according to the number of gas cylinders. This results in the need to produce a variety of gas cylinder frames for different gas cylinder quantity ratios. It lacks the idea of ​​modular design and universal design, and the universality between different products is very poor. Moreover, various gas cylinder frames are not universal, making it difficult to carry out mass production, and the unit cost is too high.

[0003] The existing technical solutions do not take into account the solution of gas cylinder replacement. A set of frames can only be used for one vehicle model or one system, which is difficult to cross-use and interchangeably use and has many special parts. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a design method for a variable-diameter compatible modular hydrogen storage and hydrogen exchange integrated system. The design method assembles independent hydrogen storage modules in different combinations to meet the needs of different vehicle models and different cruising ranges, without the need for repeated design and repeated processing, thereby reducing design and processing costs.

[0005] To solve the above problems, the specific technical solution of the present invention is as follows: A design method for a variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system, characterized by comprising the following steps: Step 1: Assume that the integrated system consists of several groups of hydrogen storage modules, and the hydrogen storage module consists of a detachable chassis and a unit-type hydrogen storage module; wherein the bottom of the detachable chassis is provided with a connection interface with the vehicle, and the top surface is provided with a connection support structure with the unit-type hydrogen storage module; Step 2: Design a connection support structure to accommodate multiple unit-type hydrogen storage modules, and the connection support structures are connected to each other or to a detachable chassis; Step 3: Design a unit hydrogen storage module. Each unit hydrogen storage module is connected one-to-one by a gas cylinder and a gas cylinder base. The diameter of the gas cylinder base is adjustable. The gas cylinder is fixed on the gas cylinder base. The gas cylinder base of each unit hydrogen storage module is connected and positioned with the connecting support structure. Step 4: When the user's actual demand for hydrogen storage is slightly greater than N times the volume of the gas cylinder, add a variable diameter compatible module. The variable diameter compatible module uses the same gas cylinder base and is connected to a small-sized gas cylinder.

[0006] The projection area of ​​the detachable chassis is fixed. According to the vehicle-mounted area, the number of detachable chassis can be calculated; according to the total demand for hydrogen, the number of gas cylinders of the same specification can be obtained; that is, the number of gas cylinders installed on each detachable chassis can be obtained.

[0007] The small-sized gas cylinder in the variable-diameter compatible module is connected and positioned on the detachable chassis through the variable-diameter gas cylinder strap and the combined gasket.

[0008] The variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system design method of the present application adopts the above steps, and can develop a gas cylinder frame suitable for a single gas cylinder for different gas cylinder designs. Finally, the gas cylinder groups are matched and combined according to the different needs of the market. The number of gas cylinder groups, the volume, length and diameter of the gas cylinders can be adjusted at will. After selecting the required gas cylinder type, the detachable chassis connection device structure can be adjusted according to the needs of the vehicle. Such a design method can reduce the design difficulty, improve the design efficiency and increase the product category. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural diagram of a detachable chassis according to Embodiment 1.

[0010] Figure 2 This is a structural diagram of the connection between the support structure and the detachable chassis of Example 1.

[0011] Figure 3 This is a structural diagram of a unit-type hydrogen storage module according to Example 1.

[0012] Figure 4 It is a three-dimensional diagram of the overall connection structure of embodiment 1.

[0013] Figure 5 This is a three-dimensional diagram of the overall connection structure of Example 2.

[0014] Figure 6 This is a three-dimensional diagram of the overall connection structure of Example 3.

[0015] Figure 7 It is a stereoscopic diagram of the variable diameter compatible connection structure of the embodiment. DETAILED DESCRIPTION Embodiment 1

[0016] like Figures 1 to 4 As shown, a design method for a variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system includes the following steps: Step 1: Assume that the integrated system consists of several groups of hydrogen storage modules, and the hydrogen storage module consists of a detachable chassis 1 and a unit hydrogen storage module 2; Figure 1 As shown, the bottom of the detachable chassis 1 is provided with a connection interface with the vehicle, and the top surface is provided with a connection support structure 5 with the unit type hydrogen storage module 2, as shown in FIG. Figure 2 As shown; Step 2: Design the connection support structure 5 to accommodate multiple unit-type hydrogen storage modules 2, and the connection support structure 5 is connected to each other or to the detachable chassis 1; Step 3: Design a unit hydrogen storage module 2, such as Figure 3 As shown, each unit hydrogen storage module 2 is connected one-to-one by a gas cylinder 3 and a gas cylinder base 4. The diameter of the gas cylinder base 4 is adjustable. The gas cylinder 3 is fixed to the gas cylinder base 4 by a variable diameter gas cylinder strap. The gas cylinder base 4 of each unit hydrogen storage module 2 is connected and positioned with the connecting support structure 5.

[0017] like Figure 4 As shown, three unit hydrogen storage modules 2 are arranged vertically and positioned with the connecting support structure 5 to complete the assembly of the integrated system hydrogen storage module. Preferably, the detachable chassis 1 and the unit hydrogen storage module 2 are of split design.

[0018] For example, taking a Type III gas cylinder with a nominal water volume of 385L as an example, its calculated hydrogen storage capacity is 9.2kg and its nominal diameter is 576mm. When the vehicle requires 27.6kg of hydrogen, and based on the vehicle height limit of 4m and the height of the upper wing surface of the frame from the ground of about 1.1m, the total height of the hydrogen storage system is within 2.9m. At the same time, considering that the height gap of each layer of gas cylinder group is generally reserved at 60mm according to experience, it is calculated that three gas cylinder groups can be stacked vertically to meet the vehicle's 27.6kg hydrogen usage requirement. Embodiment 2

[0019] The projection area of ​​the detachable chassis 1 is fixed. According to the vehicle-mounted area, the number of detachable chassis 1 can be calculated; according to the total demand for hydrogen, the number of gas cylinders of the same specification can be obtained; that is, the number of gas cylinders 3 installed on each detachable chassis 1 can be obtained. Preferably, the detachable chassis 1 and the unit hydrogen storage module 2 adopt a split design. When the number of gas cylinders is determined, the number of detachable chassis 1 is determined according to the different arrangements of the gas cylinders, and when the gas cylinders are arranged in double rows, two detachable chassis 1 are used.

[0020] For example: Taking a type III gas cylinder with a nominal water volume of 385L as an example, its calculated hydrogen storage capacity is 9.2kg, and its nominal diameter is 576mm. When the vehicle requires 55.2kg of hydrogen, and according to the vehicle height limit of 4m, the height of the upper wing surface of the frame from the ground is about 1.1m, it can be known that the total height of the hydrogen storage system is within 2.9m. At the same time, considering that the height gap of each layer of gas cylinder group is generally reserved for 60mm according to experience, it is calculated that 6 gas cylinder groups can be stacked vertically to meet the vehicle's 55.2kg hydrogen usage requirement. Figure 5 As shown, two detachable chassis and two hydrogen storage modules consisting of six gas cylinders are arranged in parallel. Embodiment 3

[0021] like Figure 6As shown, taking a type III gas cylinder with a nominal water volume of 385L as an example, its calculated hydrogen storage capacity is 9.2kg and its nominal diameter is 576mm. When the vehicle requires 73.6kg of hydrogen, and according to the vehicle height limit of 4m, the height of the upper wing surface of the frame from the ground is about 1.1m, it can be known that the total height of the hydrogen storage system is within 2.9m. At the same time, considering that the height gap of each layer of gas cylinder group is generally reserved by 60mm according to experience, 8 gas cylinders 3 of the same specification can be selected, and two groups of hydrogen storage modules are used. Each group of hydrogen storage modules uses eight unit hydrogen storage modules 2 arranged vertically and positioned with the connecting support structure 5 to complete the assembly of the integrated system hydrogen storage module. Embodiment 4

[0022] When the user's actual demand for hydrogen storage is slightly greater than N times the volume of the gas cylinder, a variable diameter compatible module is added, which uses the same gas cylinder base 4 and is connected to a small-sized gas cylinder 7. The small-sized gas cylinder 7 of the variable diameter compatible module is connected and positioned on the detachable chassis 1 through a variable diameter gas cylinder strap and a combined gasket 6.

[0023] The specific plan is to change the fixing scheme between the gas cylinder and the gas cylinder connecting device under the premise that the number of required gas cylinders remains unchanged, in order to achieve the purpose of flexible change of hydrogen storage capacity. Here, a type III gas cylinder with a nominal water volume of 385L is still taken as an example. When one gas cylinder is used, its hydrogen storage capacity is 9.2kg. When the required water volume is 162L, the calculated hydrogen storage capacity is 3.9kg. According to the traditional design idea, a matching system needs to be redesigned. The outstanding advantage of this technical solution is that it can be changed without redesigning the system. Figure 7 The combined gasket 6 on the top can be adjusted to achieve the purpose of variable diameter compatibility and variable volume compatibility. In this way, the size of the gas cylinder usage volume can be flexibly matched according to the user's actual demand for hydrogen storage, avoiding the design redundancy, excessive weight, and high cost caused by only one specification of gas cylinders in a system. For example, if a customer needs a system with a hydrogen storage capacity of 22.2kg, the factory only has 385L and 162L gas cylinders to provide. According to the traditional design method, we will use a 3-bottle group of 385L gas cylinders with a weight of 9.2*3=27.6kg as a reference solution. In this way, too much design redundancy will increase the cost and weight of the system, and the product will lack competitiveness. If the variable diameter compatible module is used, two 385L gas cylinders 3 with a weight of 9.2*2+3.9=22.2kg and one 162L small-size gas cylinder 7 can be directly combined, such as Figure 7 shown.

Claims

1. A design method for a variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system, characterized in that The following steps are involved: Step 1: Assume that the integrated system is composed of a plurality of groups of hydrogen storage modules, wherein the hydrogen storage modules are composed of a detachable chassis (1) and a unit-type hydrogen storage module (2); wherein the detachable chassis (1) is provided with a vehicle connection interface at the bottom, and a connection support structure (5) with the unit-type hydrogen storage module (2) is provided on the top surface; Step 2: Designing a connection support structure (5) to accommodate a plurality of unit-type hydrogen storage modules (2), wherein the connection support structure (5) is connected to each other or to the detachable chassis (1); Step 3: Design a unit-type hydrogen storage module (2), wherein each unit-type hydrogen storage module (2) is connected one-to-one by a gas cylinder (3) and a gas cylinder base (4), the diameter of the gas cylinder base (4) is adjustable, the gas cylinder (3) is fixed on the gas cylinder base (4), and the gas cylinder base (4) of each unit-type hydrogen storage module (2) is connected and positioned with a connecting support structure (5); Step 4: When the user's actual demand for hydrogen storage is slightly greater than N times the used volume of the gas cylinder, a variable diameter compatible module is added. The variable diameter compatible module uses the same gas cylinder base (4) and is connected to a small-sized gas cylinder (7).

2. The design method of the variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system according to claim 1 is characterized in that: The projection area of ​​the detachable chassis (1) is fixed. According to the vehicle-mounted area, the number of detachable chassis (1) to be placed can be calculated; according to the total demand for hydrogen, the number of gas cylinders of the same specification required can be obtained; thus, the number of gas cylinders (3) installed on each detachable chassis (1) can be obtained.

3. The design method of the variable diameter compatible modular hydrogen storage and hydrogen exchange integrated system according to claim 1 is characterized in that: The small-sized gas cylinder (7) in the variable-diameter compatible module is connected to the combined gasket (6) via a variable-diameter gas cylinder strap and positioned on the detachable chassis (1).

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