Thermal compensation moped fuel cell power supply system based on solid metal hydrogen storage

Abstract

The utility model discloses a thermal compensation moped fuel cell power supply system based on solid-state metal hydrogen storage, which comprises a hydrogen supply system for realizing hydrogen storage by adopting a metal solid-state hydrogen storage mode; the hydrogen fuel cell power generation system is used for realizing power generation; and the hydrogen supply system and the hydrogen fuel cell power generation system are respectively arranged on the moped frame. According to the thermal compensation moped fuel cell power supply system based on solid metal hydrogen storage provided by the utility model, air enters the fuel cell after penetrating through the air inlet by utilizing negative pressure generated by operation of the cooling fan, and the solid hydrogen storage bottle is heated by utilizing heat generated in the reaction process of the fuel cell, so that waste heat is effectively utilized, extra heating energy supply is avoided, and the energy consumption is reduced. The energy utilization efficiency is improved, meanwhile, by means of the structural strength of the moped, the hydrogen supply system and the hydrogen fuel cell power generation system are reasonably arranged, the whole system is protected, meanwhile, more independent structures are not additionally arranged, and the safety and stability of the vehicle are enhanced through the reasonable whole vehicle layout.

Description

Technical Field

[0001] This utility model belongs to the field of fuel cell technology, specifically relating to a fuel cell power supply system for a thermally compensated electric bicycle based on solid metal hydrogen storage. Background Technology

[0002] Most electric two-wheelers currently use lithium batteries for power. Although they have high energy density, they have the following problems: lithium batteries are prone to thermal runaway under complex working conditions or during charging, which can lead to combustion or explosion, posing significant safety hazards; energy density and range are limited by the chemical properties of the battery, making it difficult to meet the needs of long-distance travel.

[0003] To address the aforementioned issues, the use of hydrogen fuel cells as the power supply system has become a trend, with hydrogen storage employing a more stable and safer solid-state metal storage method. Currently, there are two main approaches to arranging power supply systems in the industry: one is to integrate the fuel cell system and the hydrogen storage tank into the same housing, as illustrated in Chinese utility model patent publication number CN 221340945 U. While this effectively allows for direct supply of hot air from the fuel cell stack to the hydrogen storage tank, it also results in a larger integrated system size, occupying significant space when placed on the vehicle body and increasing the wheelbase, thus affecting the riding experience. The other approach involves placing the hydrogen storage tank inside the vehicle's downpipe, but this requires electric heating to maintain the solid-state hydrogen storage tank's normal operation. This method effectively reduces the space required for the fuel cell system, but the heating of the hydrogen storage tank significantly reduces the overall energy efficiency of the vehicle, failing to fully utilize the advantages of hydrogen energy in electric bicycles, such as high energy density and long range.

[0004] Solid-state hydrogen storage tanks cool down as they release hydrogen. Once the temperature drops to a certain level, the hydrogen release capacity decreases significantly, affecting the hydrogen supply efficiency and failing to meet the normal operation requirements of the fuel cell system. Currently, the industry often uses additional electric auxiliary heating to heat the solid-state hydrogen storage tanks to ensure their performance, but this method results in energy loss, leading to lower overall vehicle energy efficiency.

[0005] Existing technologies have made some attempts to utilize waste heat, such as placing solid hydrogen storage tanks near the fuel cell outlet and using hot air for heating. However, these solutions may not be optimized in terms of structural layout, failing to fully utilize the vehicle's original structure and space, resulting in a longer wheelbase and greater bulk. Furthermore, the separate casing made of plastic or other materials cannot provide sufficient protection for the fuel cell system, and there is still room for improvement in the protection and heat dissipation of the hydrogen storage tanks. Utility Model Content

[0006] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a thermal compensation fuel cell power supply system for electric bicycles based on solid metal hydrogen storage.

[0007] To achieve the above objectives and technical effects, the technical solution adopted by this utility model is as follows:

[0008] A fuel cell power supply system for a thermally compensated electric bicycle based on solid-state metal hydrogen storage includes:

[0009] The hydrogen supply system uses solid metal hydrogen storage to store hydrogen.

[0010] Hydrogen fuel cell power generation systems are used to generate electricity.

[0011] Furthermore, the hydrogen supply system and the hydrogen fuel cell power generation system are mounted on the frame of the electric bicycle.

[0012] Furthermore, the electric bicycle frame includes a lower tube and a bottom junction box, the lower tube is connected to the bottom junction box, the hydrogen supply system is installed inside the lower tube, and the hydrogen fuel cell power generation system is installed inside the bottom junction box.

[0013] Furthermore, the bottom of the five-way box has a drainage hole.

[0014] Furthermore, the bottom of the five-way box has an air inlet, and a filter layer is installed at the air inlet.

[0015] Furthermore, the hydrogen supply system includes a solid hydrogen storage cylinder containing solid hydrogen storage powder. The solid hydrogen storage cylinder is installed in the lower cavity of the lower pipe and placed at an angle upwards. The valve of the solid hydrogen storage cylinder is higher than the body of the solid hydrogen storage cylinder.

[0016] Furthermore, the solid hydrogen storage bottle does not come into complete contact with the inner wall of the lower tube.

[0017] Furthermore, the lower cavity of the lower tube is also provided with an openable and closable hydrogen storage tank cover. The opening of the hydrogen storage tank cover faces downward, and the hydrogen storage tank cover is provided with a mechanical lock or electronic lock for locking, fixing and removing the solid hydrogen storage cylinder.

[0018] Furthermore, the hydrogen fuel cell power generation system includes a fuel cell, a cooling fan, a fuel cell controller, a solenoid valve, and a pressure sensor. The fuel cell and the cooling fan are installed close to the lower pipe, with the outlet of the cooling fan facing the lower pipe. The fuel cell controller is installed on top of the fuel cell and is connected to the fuel cell, the cooling fan, the solenoid valve, and the pressure sensor.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This utility model discloses a thermal compensation fuel cell power supply system for a power-assisted bicycle based on solid metal hydrogen storage. It utilizes the negative pressure generated by the operation of a cooling fan to allow air to enter the fuel cell through the air inlet. The heat generated during the fuel cell reaction heats the solid hydrogen storage tank, effectively utilizing waste heat and avoiding additional heating for energy supply, thus improving energy efficiency. Simultaneously, leveraging the inherent structural strength of the power-assisted bicycle, the hydrogen supply system and the hydrogen fuel cell power generation system are rationally arranged. This protects the overall system without adding additional independent structures. The reasonable overall vehicle layout enhances the vehicle's safety and stability. The ingenious and reasonable overall structural design has significant potential for widespread application. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 2-3 These are schematic diagrams of the internal structure of this utility model. Detailed Implementation

[0023] The present invention will now be described in detail so that its advantages and features can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0024] The following provides a brief overview of one or more aspects to offer a basic understanding of them. This overview is not an exhaustive summary of all conceived aspects, nor is it intended to identify key or decisive elements of all aspects, nor to define the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form to prepare for the more detailed descriptions that follow.

[0025] like Figure 1-3 As shown, this utility model discloses a thermally compensated fuel cell power supply system for electric bicycles based on solid metal hydrogen storage, comprising:

[0026] The hydrogen supply system uses solid metal hydrogen storage to store hydrogen.

[0027] Hydrogen fuel cell power generation system, used to generate electricity;

[0028] The hydrogen supply system and the hydrogen fuel cell power generation system are respectively installed on the bicycle frame 1. The bicycle frame 1 includes a lower pipe 2 and a bottom junction box 3. The lower pipe 2 is connected to the bottom junction box 3. The hydrogen supply system is installed in the lower pipe 2, and the hydrogen fuel cell power generation system is installed in the bottom junction box 3.

[0029] In this invention, the lower tube 2 is processed by aluminum extrusion to form two independent chambers (upper chamber and lower chamber), which are separated by an intermediate aluminum material.

[0030] The bottom bracket 3 of this invention is equipped with a bottom bracket shaft 31. A drain hole 4 is located at the bottom of the bottom bracket 3. In the event of a small amount of water entering the lower pipe 2, the water can flow along the bottom of the lower pipe 2 to the bottom bracket 3 and be discharged through the drain hole 4, preventing accumulation inside the bicycle frame 1. An air inlet 5 is located at the bottom of the bottom bracket 3, and a filter layer (such as a filter sponge) is installed at the air inlet 5. This filter removes most physical impurities from the air while allowing the fuel cell to receive air.

[0031] The hydrogen supply system of this invention includes a solid hydrogen storage cylinder 6, which contains solid hydrogen storage powder. A cylinder valve 7 is installed at the top opening of the solid hydrogen storage cylinder 6. Because the hydrogen gas pressure stored in the solid hydrogen storage cylinder 6 is too high to directly enter the fuel cell 9 for reaction, the cylinder valve 7 is installed to reduce and stabilize the hydrogen supply, allowing the hydrogen to stably enter the fuel cell 9 for reaction. The cylinder valve 7 also has safety functions such as manual control of the gas path opening and closing, and pressure relief through venting after overpressure. The solid hydrogen storage cylinder 6 is installed in the lower cavity of the lower pipe 2. The lower cavity of the lower pipe 2 is also equipped with an openable and closable hydrogen storage chamber cover 8, which is equipped with a mechanical lock or electronic lock to realize the solid hydrogen storage... The locking, fixing, and placement of hydrogen cylinder 6 are achieved by having the opening of the hydrogen storage chamber cover 8 facing downwards, effectively preventing rainwater from flowing into the pipe. The solid hydrogen storage cylinder 6 is placed inside the lower pipe 2 and secured by the welded positioning ribs and support columns at the bottom of the lower pipe 2, as well as the inner wall of the lower pipe 2 and the hydrogen storage chamber cover 8. The solid hydrogen storage cylinder 6 is placed at an angle upwards, with the cylinder valve 7 higher than the cylinder body to ensure that the solid hydrogen storage powder does not clog the valve 7 during operation. Simultaneously, the solid hydrogen storage cylinder 6 is required not to be in complete contact with the inner wall of the lower pipe 2. The cylinder body is in line contact with the lower pipe 2 and the cover, allowing most of the cylinder body to be suspended while the cylinder 6 is secured, facilitating subsequent heating.

[0032] The hydrogen fuel cell power generation system of this utility model includes a fuel cell 9, a cooling fan 10, a fuel cell controller 11, a solenoid valve 12, and a pressure sensor 13. The fuel cell 9 and the cooling fan 10 are installed close to the lower pipe 2, with the outlet of the cooling fan 10 facing the lower pipe. The fuel cell controller 11 is installed on top of the fuel cell 9 and is the core component of the entire system, capable of information acquisition and control, and managing the energy of the entire system. The fuel cell controller 11 is connected to the fuel cell 9, the cooling fan 10, the solenoid valve 12, and the pressure sensor 13, respectively, via the solenoid valve... 12 controls whether hydrogen enters the fuel cell 9. The pressure sensor 13 collects the hydrogen pressure entering the fuel cell 9 to prevent damage to the fuel cell 9 caused by excessively high or low pressure. The negative pressure generated by the operation of the cooling fan 10 allows air to enter the fuel cell 9 through the air inlet 5. While generating electricity through a chemical reaction with the fuel cell 9, the excess air is heated to 50°C. The cooling fan 10 blows the hot air into the lower tube space. Since the solid hydrogen storage bottle 6 is suspended, the hot air can pass through the periphery of the solid hydrogen storage bottle, carrying away the cold air in the bottle and heating the solid hydrogen storage bottle 6.

[0033] The solid hydrogen storage cylinder 6 has an outlet at the top of the cylinder to release the hydrogen stored inside, which can provide raw materials for power generation. The solid hydrogen storage cylinder 6 is connected to the fuel cell 9 through a hose, and the solenoid valve 12 and pressure sensor 13 are located in the middle of the hose.

[0034] The fuel cell 9 in this invention is preferably a hydrogen fuel cell.

[0035] This invention utilizes the heat generated during the reaction of the fuel cell 9 to heat the solid hydrogen storage cylinder 6, effectively utilizing waste heat and avoiding additional heating for energy supply, thus improving energy efficiency. At the same time, by leveraging the structural strength of the electric bicycle itself, the hydrogen supply system and the hydrogen fuel cell power generation system are rationally arranged. Through a reasonable overall vehicle layout, the safety and stability of the vehicle are enhanced. While protecting the overall system, no additional independent structures are added, and waterproofing is also improved.

[0036] The parts or structures not specifically described in this utility model can be made using existing technology or existing products, and will not be elaborated here.

[0037] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A thermally compensated fuel cell power supply system for electric bicycles based on solid-state metal hydrogen storage, characterized in that, include: The hydrogen supply system uses solid metal hydrogen storage to store hydrogen. Hydrogen fuel cell power generation system, used to generate electricity; The hydrogen fuel cell power generation system includes a fuel cell, a cooling fan, a fuel cell controller, a solenoid valve, and a pressure sensor. The fuel cell and the cooling fan are installed close to the lower pipe, with the outlet of the cooling fan facing the lower pipe. The fuel cell controller is installed on top of the fuel cell and is connected to the fuel cell, the cooling fan, the solenoid valve, and the pressure sensor.

2. The fuel cell power supply system for a thermally compensated electric bicycle based on solid-state metal hydrogen storage according to claim 1, characterized in that, The hydrogen supply system and the hydrogen fuel cell power generation system are mounted on the frame of the electric bicycle.

3. The fuel cell power supply system for a thermally compensated electric bicycle based on solid-state metal hydrogen storage according to claim 2, characterized in that, The electric bicycle frame includes a lower tube and a bottom junction box. The lower tube is connected to the bottom junction box. The hydrogen supply system is installed inside the lower tube, and the hydrogen fuel cell power generation system is installed inside the bottom junction box.

4. The fuel cell power supply system for a thermally compensated electric bicycle based on solid-state metal hydrogen storage according to claim 3, characterized in that, The bottom of the five-way box has a drainage hole.

5. A thermally compensated fuel cell power supply system for electric bicycles based on solid-state metal hydrogen storage according to claim 3, characterized in that, The bottom of the five-way box has an air inlet, and a filter layer is installed at the air inlet.

6. The fuel cell power supply system for a thermally compensated electric bicycle based on solid-state metal hydrogen storage according to claim 3, characterized in that, The hydrogen supply system includes a solid hydrogen storage cylinder containing solid hydrogen storage powder. The solid hydrogen storage cylinder is installed in the lower cavity of the lower pipe and placed at an angle upwards. The valve of the solid hydrogen storage cylinder is higher than the body of the cylinder.

7. A thermally compensated fuel cell power supply system for electric bicycles based on solid-state metal hydrogen storage according to claim 6, characterized in that, The solid hydrogen storage cylinder is not in complete contact with the inner wall of the lower tube.

8. A thermally compensated fuel cell power supply system for a bicycle based on solid-state metal hydrogen storage according to claim 6, characterized in that, The lower cavity of the lower tube is also equipped with an openable and closable hydrogen storage tank cover. The opening of the hydrogen storage tank cover faces downward. The hydrogen storage tank cover is equipped with a mechanical lock or electronic lock for locking, fixing and removing the solid hydrogen storage cylinder.

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