Fuel cell module for demonstration teaching and toys

Abstract

The utility model discloses a fuel cell module for demonstration teaching and toys, which belongs to the technical field of fuel cells and comprises an anode end plate and a cathode end plate. A first silica gel sealing ring, a first collector plate, a first sealing ring, a membrane electrode assembly, a second sealing ring, a second collector plate and a second silica gel sealing ring are sequentially arranged between the anode end plate and the cathode end plate, the membrane electrode assembly comprises two gas diffusion layers and a membrane electrode piece, and the membrane electrode piece comprises a frame and a CCM arranged in the middle of the frame. The CCM is arranged between the two gas diffusion layers, the anode end plate and the cathode end plate are fixedly connected through bolts, the fuel cell module is simple in structure, air cooling is used for replacing liquid cooling, the heat dissipation structure is simplified, the product cost is reduced, meanwhile, the detachable modular structure is beneficial to cultivating the operational ability of students, and the practical value of the students is improved. And the interest in the renewable energy technology is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell technical field, more specifically, relate to a kind of fuel cell module for demonstration teaching and toy. BACKGROUND

[0002] As clean energy technology, fuel cell has broad application prospects, and is widely used in transportation, power and other fields due to its characteristics of cleanliness and high efficiency. However, the existing small fuel cell systems on the market are mostly targeted at professional research or high-end consumer equipment, and generally have problems such as high manufacturing cost, complex structure and insufficient educational applicability. There is a lack of low-cost, easy-to-operate and education-promotion-friendly products, which limits their popularity in education and popular science fields.

[0003] Especially in educational toys and sand table models, the existing power schemes are mostly battery-driven, which cannot reflect the practical application and educational significance of fuel cell technology. There is still a lack of fuel cell power modules for education that have high power output, low hydrogen pressure requirement, simple structure and are suitable for small toys or sand table models.

[0004] Currently, fuel cells mostly use complex cooling methods such as water cooling and liquid cooling, which require the provision of water pumps and other equipment, as well as the design of cooling liquid flow channels in the stack. The structure is relatively complex and the cost is relatively high, which is not conducive to popularization and use in educational aids and toys. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a fuel cell module for demonstration teaching and toys to solve the problems in the background art.

[0006] According to the first aspect of the utility model, a fuel cell module for demonstration teaching and toys is provided, which comprises an anode end plate and a cathode end plate. A first silica gel sealing ring, a first current collector plate, a first sealing ring, a membrane electrode assembly, a second sealing ring, a second current collector plate and a second silica gel sealing ring are sequentially arranged between the anode end plate and the cathode end plate. The membrane electrode assembly comprises two gas diffusion layers and a membrane electrode sheet. The membrane electrode sheet comprises a frame and a CCM arranged in the middle of the frame. The CCM is arranged between the two gas diffusion layers. The anode end plate and the cathode end plate are fixedly connected by bolts.

[0007] In a specific embodiment of the utility model, the anode end plate is provided with a gas storage groove, and the gas storage groove is provided with a gas hole.

[0008] In a specific embodiment of the utility model, the inside of the gas storage groove is provided with a plurality of support columns, and one end of the support column is in contact with the first current collector plate.

[0009] In a specific embodiment of the utility model, the outside of the gas storage groove is provided with a first groove, and the first silica gel sealing ring is installed in the first groove.

[0010] In a specific embodiment of the utility model, the cathode end plate is provided with a second groove on the side close to the anode end plate, and the second silica gel sealing ring is installed in the second groove.

[0011] In a specific embodiment of the utility model, the first current collecting plate and the second current collecting plate are both metal materials and are both provided with a plurality of uniformly distributed through holes.

[0012] In a specific embodiment of the utility model, the first current collecting plate and the second current collecting plate are both provided with a convex part facilitating disassembly and assembly.

[0013] In a specific embodiment of the utility model, the cathode end plate is provided with a square through hole in the middle, and the square through hole is provided with a plurality of inclined parts on the outer periphery.

[0014] In a specific embodiment of the utility model, the first sealing ring and the second sealing ring are both Teflon materials.

[0015] In a specific embodiment of the utility model, the anode end plate and the cathode end plate are both transparent acrylic materials.

[0016] The above technical solution of the utility model has at least one of the following advantages or beneficial effects:

[0017] The fuel cell module is assembled into a battery module by sequentially installing the first current collecting plate, the first sealing ring, the membrane electrode assembly, the second sealing ring and the second current collecting plate between the anode end plate and the cathode end plate, the structure is simple, practical air cooling is used to replace liquid cooling, the heat dissipation structure is simplified, the cost of the product is reduced, and the modular structure can be disassembled, which helps to cultivate the practical ability of students and improve the interest in renewable energy technology. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described in combination with the drawings and embodiments;

[0019] Figure 1 is the structure schematic view of the fuel cell module for demonstrating teaching and toys in an embodiment of the utility model;

[0020] Figure 2 is the exploded structure schematic view of the fuel cell module for demonstrating teaching and toys in an embodiment of the utility model;

[0021] Figure 3 is the structure schematic view of the anode end plate in an embodiment of the utility model;

[0022] Figure 4 is a structural schematic view of a cathode end plate in an embodiment of the present application;

[0023] Figure 5 is a sectional view of a fuel cell module for demonstration teaching and toys in an embodiment of the present application. DETAILED DESCRIPTION

[0024] The embodiments of the present application will be described in detail below, examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the present application, and cannot be understood as a limitation of the present application.

[0025] In the description of the present application, it should be understood that, if the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0026] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than, etc. are not included in the number, above, below, etc. are understood as including the number. If it is described to the first, second, only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of indicated technical features.

[0027] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features.

[0028] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection or movable connection, or detachable connection or non-detachable connection, or integral connection; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements, indirect communication or mutual action relationship of two elements.

[0029] The following disclosure provides many different embodiments or examples for implementing different aspects of the present application.

[0030] Referring to Figures 1 to 5 As shown in the figure, a fuel cell module for demonstration teaching and toys is provided, comprising an anode end plate 1 and a cathode end plate 2, and a first silica gel sealing ring 14, a first current collecting plate 3, a first sealing ring 4, a membrane electrode assembly 5, a second sealing ring 6, a second current collecting plate 7 and a second silica gel sealing ring 22 are sequentially arranged between the anode end plate 1 and the cathode end plate 2, the membrane electrode assembly 5 comprises two gas diffusion layers 51 and a membrane electrode piece 52, the membrane electrode piece 52 comprises a frame and a CCM arranged in the middle of the frame, the CCM is arranged between the two gas diffusion layers 51, and the anode end plate 1 and the cathode end plate 2 are fixedly connected by bolts.

[0031] In the embodiment, four assembly holes of the same size are arranged at the four corners of the anode end plate 1, the cathode end plate 2, the first current collecting plate 3, the first sealing ring 4, the membrane electrode assembly 5, the second sealing ring 6 and the second current collecting plate 7, bolts can pass through the assembly holes for fixation, the fuel cell module is convenient to assemble into a stack and install a cooling fan, the fuel cell module adopts proton exchange membrane (PEM) technology, has high single-piece power density, supports modular expansion, uses air cooling instead of liquid cooling, simplifies the cooling structure, reduces the difficulty of use and maintenance, reduces the product volume, the fuel cell module is fixedly connected by bolts, the structure is more stable, all the components are separable and detachable, the fuel cell module is convenient to assemble and maintain, and the fuel cell module is also beneficial to the understanding of the user for each component of the module and the improvement of the hands-on ability of students.

[0032] The membrane electrode piece 52 comprises a frame and a CCM arranged in the middle of the frame, the CCM is wrapped by the frame and arranged in the frame.

[0033] The membrane electrode assembly 5 adopts a seven-in-one structure, the anode and the cathode are respectively provided with porous carbon paper capable of filtering foreign matters and diffusing gas, and the outermost layer is fixed by a high polymer material frame, so that the structure is stable; the membrane electrode assembly 5 adopts a domestic low-cost high-performance MEA as a membrane electrode, so that the performance is improved and the cost is reduced, the purchase price of consumers is reduced, and the promotion rate of the fuel cell education toy product is improved.

[0034] In one embodiment of the utility model, the anode end plate 1 is provided with a gas storage groove 11, the gas storage groove 11 is provided with a gas vent 12, the gas storage groove 11 has a depth of 3-8 mm, the gas storage groove 11 is convenient for storing reaction gas, and the gas vent 12 is relatively arranged at two corners of the gas storage groove 11 and penetrates the anode end plate 1, so that the fuel cell module is convenient for heat dissipation.

[0035] Further, a plurality of supporting columns 111 are arranged in the gas storage groove 11, one end of the supporting column 111 is in contact with the first current collecting plate 3, and the supporting column 111 is used for supporting the first current collecting plate 3, so that the first current collecting plate 3 is fully attached to the membrane electrode assembly 5.

[0036] Further, the outer side of the gas storage tank 11 is provided with a first groove 13, and a first silica gel sealing ring 14 is installed in the first groove 13, thereby improving the sealing property and effectively preventing foreign matters from entering.

[0037] In one embodiment of the utility model, the cathode end plate 2 is provided with a second groove 21 on the side close to the anode end plate 1, and a second silica gel sealing ring 22 is installed in the second groove 21, thereby improving the sealing property and effectively preventing foreign matters from entering.

[0038] In one embodiment of the utility model, the first current collecting plate 3 and the second current collecting plate 7 are both made of metal material and are both provided with a plurality of uniformly distributed through holes, the metal material is made of material with strong conductivity, such as stainless steel, titanium plate or nickel plate, the through holes are uniformly distributed and have the same size and consistent arrangement distance, and are used for gas diffusion.

[0039] In one embodiment of the utility model, the first current collecting plate 3 and the second current collecting plate 7 are both provided with convex parts 37 convenient for dismounting, in the installation process, the convex parts 37 can be held by hand to fix the current collecting plate, and after the bolts are passed through, the hand can be released; in the dismounting process, the bolts are dismounted, and the current collecting plate can be taken out directly by holding the convex parts 37, and the installation directions of the convex parts 37 on the first current collecting plate 3 and the second current collecting plate 7 are different, thereby facilitating distinguishing.

[0040] In one embodiment of the utility model, the cathode end plate 2 is provided with a square through hole 23 in the middle, the outer periphery of the square through hole 23 is provided with a plurality of inclined parts 24, the area size of the membrane electrode piece 52 is 3cm*3cm, the size of the square through hole 23 is the same as that of the membrane electrode piece 52, and the through holes on the second current collecting plate 7 are all exposed outside, thereby facilitating air permeation, and the plurality of inclined parts 24 are used for distinguishing, thereby making the appearance more beautiful.

[0041] In one embodiment of the utility model, the first sealing ring 4 and the second sealing ring 6 are both made of Teflon material, and the first sealing ring 4 and the second sealing ring 6 are both provided with holes with the same area size as that of the membrane electrode piece 52 in the middle position, thereby avoiding that the sealing rings contact the membrane electrode piece 52 and affect the reaction, and the anode end plate 1 and the cathode end plate 2 are both made of transparent acrylic material, thereby facilitating students to observe and learn the chemical reaction of the fuel cell.

[0042] The assembling steps of the utility model are as follows:

[0043] First step: the gas storage groove 11 of the cathode end plate 2 is upward, then the second silica gel sealing ring 22 is embedded in the second groove 21 of the cathode end plate 2, then the second current collecting plate 7 is placed above the second silica gel sealing ring 22, then a piece of the second sealing ring 6 is placed above the second current collecting plate 7, the cathode of the membrane electrode assembly 5 is towards the second sealing ring 6 and is placed above it;

[0044] Second step: a piece of the first sealing ring 4 is placed on the anode of the membrane electrode assembly 5, and then a piece of the first current collecting plate 3 is placed;

[0045] Third step: the first groove 13 of the anode end plate 1 is upward, the first silica gel sealing ring 14 is embedded in the first groove 13, then the whole is placed downward at the anode of the membrane electrode assembly 5;

[0046] Fourth step: the bolts are inserted in the bolt reserved holes at four corners, the nuts are screwed, the bolts are fastened by adopting the cross tightening strategy (M4x16, a torque wrench is used, and the torque is applied twice: 2Nm pre-tightening→4Nm final tightening), the bolts are tightened, the force at the four corners is ensured to be uniform, finally the sealing property is checked, and the assembly is completed;

[0047] Fifth step: the heat dissipation fan is installed when used, and the hydrogen and the external circuit are connected, so that the device can be used.

[0048] The power generation mode demonstration steps of the utility model are as follows:

[0049] First step: the anode is connected with 0.03MPa hydrogen (purity≥99.95%);

[0050] Second step: the cathode is naturally air convection (ventilation volume≥0.5m³ / h);

[0051] Third step: the electric appliance or the toy or the teaching instrument panel (voltage display precision±0.01V) is connected through the metal current collecting plate interface.

[0052] Fault handling:

[0053] When the voltage is abnormally reduced:

[0054] A. check the compression amount of the double sealing rings (the standard value is 0.5-0.8mm, which is measured by using a plug gauge);

[0055] B. test the contact piece resistance (which should be≤0.1Ω).

[0056] Notes:

[0057] The utility model needs to use the hydrogen pressure of 0.03mpa-0.05mpa; the hydrogen purity is≥99.95%; nitrogen is used for purging before use, and hydrogen is used for purging after use.

[0058] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A fuel cell module for demonstration teaching and toys, comprising an anode end plate (1) and a cathode end plate (2), characterized in that, The anode end plate (1) and the cathode end plate (2) are provided with a first silica gel sealing ring (14), a first current collecting plate (3), a first sealing ring (4), a membrane electrode assembly (5), a second sealing ring (6), a second current collecting plate (7) and a second silica gel sealing ring (22) in sequence, the membrane electrode assembly (5) comprises two gas diffusion layers (51) and a membrane electrode sheet (52), the membrane electrode sheet (52) comprises a frame and a CCM arranged in the middle of the frame, the CCM is arranged between the two gas diffusion layers (51), and the anode end plate (1) and the cathode end plate (2) are fixedly connected through bolts.

2. The fuel cell module for demonstration and educational toy of claim 1, wherein The anode end plate (1) is provided with a gas storage groove (11), and the gas storage groove (11) is provided with a gas passage hole (12).

3. The fuel cell module for demonstration and educational toy of claim 2, wherein The inside of the gas storage groove (11) is provided with a plurality of supporting columns (111), one end of the supporting column (111) is in contact with the first current collecting plate (3).

4. The fuel cell module for demonstration and educational toy of claim 2, wherein The outside of the gas storage groove (11) is provided with a first groove (13), and the first silica gel sealing ring (14) is installed in the first groove (13).

5. The fuel cell module for demonstration and educational toy of claim 1, wherein The cathode end plate (2) is provided with a second groove (21) on the side close to the anode end plate (1), and the second silica gel sealing ring (22) is installed in the second groove (21).

6. The fuel cell module for demonstration and educational toy of claim 1, wherein The first current collecting plate (3) and the second current collecting plate (7) are both metal materials and are both provided with a plurality of uniformly distributed through holes.

7. The fuel cell module for demonstration and educational toy of claim 6, wherein The first current collecting plate (3) and the second current collecting plate (7) are both provided with convex parts (37) facilitating disassembly and assembly.

8. The fuel cell module for demonstration and educational toy of claim 1, wherein The middle part of the cathode end plate (2) is provided with a square through hole (23), and the outer periphery of the square through hole (23) is provided with a plurality of inclined parts (24).

9. The fuel cell module for demonstration and educational toy of claim 1, wherein The first sealing ring (4) and the second sealing ring (6) are both Teflon materials.

10. The fuel cell module for demonstration and educational toy of claim 1, wherein The anode end plate (1) and the cathode end plate (2) are both transparent acrylic materials.

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