Solid hydrogen storage moped heat pipe fuel cell power system and moped

Abstract

The invention relates to a solid hydrogen storage moped heat pipe fuel cell power system and a moped, and belongs to the technical field of mopeds. According to the heat pipe fuel cell power system of the solid hydrogen storage moped, the heat pipe can quickly transfer heat released by electrochemical reaction of the fuel cell into the solid hydrogen storage bottle through phase-change heat transfer, so that heat required to be absorbed by the solid hydrogen storage bottle for releasing hydrogen is compensated, and meanwhile, an outlet of a fan of the fuel cell faces the solid hydrogen storage bottle; and water condensed and attached to the bottle wall in the air can be quickly removed while hot air is provided, so that the system is kept dry. In addition, due to the adoption of the heat pipe, the heat exchange efficiency is remarkably improved, the air inlet amount of the fuel cell can be effectively reduced while hydrogen desorption of the hydrogen storage bottle and heat dissipation of the fuel cell are promoted, fan energy consumption can be saved, and noise can be reduced. And the reliability and stable power output level of the whole system are enhanced, so that the fuel cell power system can be matched with higher power and richer application scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of power-assisted vehicles, and in particular to a heat pipe fuel cell power system for a solid-state hydrogen storage power-assisted vehicle and a power-assisted vehicle. Background Art

[0002] With the development of new energy technology and the sharing economy, electric bicycles are becoming more and more popular, providing people with more flexible, convenient and diverse transportation options. Most existing electric bicycles use batteries as energy media, and some use hydrogen energy. Batteries as energy media have many disadvantages, such as limited battery life, low energy density, short life, and easy to explode, which makes it difficult to meet the public's further demand for stable battery life and safety.

[0003] Hydrogen-powered bicycles are generally a combination of a hydrogen source and a fuel cell. The hydrogen sources are mostly high-pressure hydrogen storage and solid-state hydrogen storage. High-pressure hydrogen storage as a hydrogen source has a low volume hydrogen storage density and high infrastructure construction costs, making it difficult to promote. Solid-state hydrogen storage absorbs a large amount of heat during the hydrogen release process, which limits the power level of the bicycle.

[0004] Most existing solid-state hydrogen storage assisted vehicles have problems such as poor heat dissipation performance, poor system reliability, and poor safety. In addition, during use, the solid-state hydrogen storage bottle absorbs heat, causing water vapor in the air to condense and adhere to the surface of the bottle. When the accumulation amount is large, it will gather into water droplets or water flows and transfer to other parts of the system under gravity or inertia, which may cause circuit short circuit or rust of structural parts. Summary of the invention

[0005] In view of the above analysis, an embodiment of the present invention aims to provide a solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system and a power-assisted vehicle, so as to solve at least one of the problems of existing solid-state hydrogen storage power-assisted vehicles, such as poor heat dissipation performance, poor system reliability, poor safety, and water vapor adhesion.

[0006] In a first aspect, the present invention provides a solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system, comprising a solid-state hydrogen storage bottle, a heat pipe, a fuel cell and a control system, wherein the solid-state hydrogen storage bottle and the fuel cell are connected via the heat pipe, the fuel cell is located on one side of the solid-state hydrogen storage bottle, the control system is connected to the fuel cell, and the control system controls the output of the fuel cell to enable the power-assisted vehicle to work.

[0007] Furthermore, at least one heat pipe is provided, and the heat pipe comprises a heat pipe cold end and a heat pipe hot end, the heat pipe cold end is connected to the solid-state hydrogen storage bottle, and the heat pipe hot end is connected to the fuel cell.

[0008] Furthermore, the cold end of the heat pipe is an arc-shaped structure, the hot end of the heat pipe is a straight segment structure, and the hot end of the heat pipe is connected to the cold end of the heat pipe in a smooth transition.

[0009] Furthermore, the fuel cell includes a fuel cell body, a fuel cell air inlet and a fuel cell fan, the fuel cell air inlet and the fuel cell fan are both fixedly connected to the fuel cell body, and the fuel cell body is electrically connected to the control system.

[0010] Furthermore, the air outlet of the fuel cell fan faces the outside of the solid-state hydrogen storage bottle.

[0011] In a second aspect, the present invention provides a solid-state hydrogen storage power-assisted vehicle including the above-mentioned fuel cell power system, wherein the power-assisted vehicle further includes a vehicle body, driven wheels, pedals and driving wheels;

[0012] The fuel cell power system is arranged inside the power system compartment, the power system compartment is fixedly connected to the vehicle body, a trigger device is arranged inside the foot pedal, and the trigger device is electrically connected to the control system.

[0013] Furthermore, the control system includes a voltage stabilizing module and an electronic control module. A trigger device is provided in the foot pedal, and the trigger device is electrically connected to the electronic control module.

[0014] Furthermore, the driving wheel includes a driving wheel motor, the driving wheel motor is connected to the foot pedal via a chain, and the driving wheel motor is electrically connected to the control system.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] (1) The heat pipe in the heat pipe fuel cell power system of the solid-state hydrogen storage power-assisted vehicle of the present invention can quickly transfer the heat released by the electrochemical reaction of the fuel cell to the solid-state hydrogen storage bottle through phase change heat, thereby compensating the heat absorbed by the solid-state hydrogen storage bottle to release hydrogen. At the same time, the air outlet of the fuel cell fan is toward the outside of the solid-state hydrogen storage bottle, which can quickly remove the moisture condensed in the air and attached to the wall of the solid-state hydrogen storage bottle while providing hot air to keep the system dry;

[0017] (2) The heat pipe fuel cell power system of the solid-state hydrogen storage power-assisted vehicle of the present invention adopts a heat pipe to significantly improve the heat exchange efficiency. While promoting the release of hydrogen from the hydrogen storage bottle and the heat dissipation of the fuel cell, it can effectively reduce the air intake of the fuel cell, save fan energy consumption, reduce noise, and improve the overall energy utilization rate and comfort of the system;

[0018] (3) The solid-state hydrogen storage assisted vehicle of the present invention has improved cruising range and safety. The heat exchange is optimized by designing the heat pipe structure, and the position of the heat pipe, the solid-state hydrogen storage bottle and the fuel cell is set, which improves the dynamic performance of the solid-state hydrogen storage and the heat dissipation effect of the fuel cell, enhances the reliability and stable power output level of the entire system, and enables the fuel cell power system to match greater power and richer application scenarios.

[0019] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0021] Figure 1 It is a structural schematic diagram of a heat pipe fuel cell power system of a solid-state hydrogen storage power-assisted vehicle of the present invention;

[0022] Figure 2 A schematic diagram of a heat pipe of the present invention;

[0023] Figure 3 This is a schematic structural diagram of a solid-state hydrogen storage power vehicle of the present invention.

[0024] Reference numerals:

[0025] 10-body, 11-power system compartment, 12-driven wheel, 13-pedal, 14-driving wheel, 141-driving wheel motor, 2-solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system, 21-solid-state hydrogen storage bottle, 22-heat pipe, 23-fuel cell, 24-control system, 211-solid-state hydrogen storage bottle body, 212-integrated pressure reducing valve, 2121-hydrogen filling port, 2122-hydrogen discharge port, 2123-pressure sensor, 221-heat pipe cold end, 222-heat pipe hot end, 231-fuel cell body, 232-fuel cell air inlet, 233-fuel cell fan, 241-voltage stabilizing module, 242-electronic control module. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0027] A specific embodiment of the present invention, as Figure 1-3 As shown, a solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system 2 is disclosed, comprising a solid-state hydrogen storage bottle 21, a heat pipe 22, a fuel cell 23 and a control system 24, wherein the solid-state hydrogen storage bottle 21 and the fuel cell 23 are connected via the heat pipe 22, the fuel cell 23 is located on one side of the solid-state hydrogen storage bottle 21, the control system 24 is connected to the fuel cell 23, and the control system 24 controls the output of the fuel cell 23 to enable the power-assisted vehicle to work.

[0028] In a specific embodiment, at least one heat pipe 22 is provided, and the heat pipe 22 includes a heat pipe cold end 221 and a heat pipe hot end 222, the heat pipe cold end 221 is connected to the solid-state hydrogen storage bottle 21, and the heat pipe hot end 222 is connected to the fuel cell 23.

[0029] Specifically, the heat pipe 22 contains an easily evaporable liquid with a certain vacuum degree. When the temperature is higher than a specific temperature, it will evaporate and absorb heat and diffuse to other positions in the pipe in a gaseous state. When the temperature is lower than a specific temperature, it will condense and release heat and transfer it to other positions in a liquid state. The cold end 221 of the heat pipe is bent into an arc-shaped structure, and the fluid in the pipe liquefies and releases heat here. The hot end 222 of the heat pipe is a straight segment structure, and the fluid in the pipe vaporizes and absorbs heat here.

[0030] It should be noted that the specific composition of the internal liquid of the heat pipe 22 of the present invention and the material of the heat pipe 22 are all prior art, and any liquid that can play the above-mentioned role can be used.

[0031] Compared with the prior art, the heat pipe 22 of the heat pipe fuel cell power system 2 of the solid-state hydrogen storage power-assisted vehicle of the present invention can quickly transfer the heat released by the electrochemical reaction of the fuel cell 23 to the solid-state hydrogen storage bottle 21 through phase change heat transfer, thereby compensating for the heat absorbed by the solid-state hydrogen storage bottle 21 to release hydrogen. At the same time, the outlet of the fuel cell fan 233 faces the solid-state hydrogen storage bottle 21, and the blown hot air can directly undergo convection heat exchange on the outer wall of the solid-state hydrogen storage bottle 21, and can also quickly remove the moisture condensed in the air and attached to the bottle wall to keep the system dry.

[0032] In a specific implementation, the heat pipe cold end 221 is an arc-shaped structure, the heat pipe hot end 222 is a straight segment structure, and the heat pipe hot end 222 is connected to the heat pipe cold end 221 in a smooth transition.

[0033] It should be noted that the heat pipe 22 with the above structure can be in close contact with the heat exchange object, so that the temperature of the hot end 222 of the heat pipe of the present invention is 60°C, the temperature of the cold end 221 of the heat pipe is 5°C, the temperature difference is 55°C, and the heat pipe 22 is prepared by sintering process. The thermal conductivity of the heat pipe 22 is 2100W·m -1·K -1 This can meet the heat exchange requirements and achieve heat exchange balance, and can ensure that the heat released by the electrochemical reaction of the fuel cell is quickly transferred to the solid-state hydrogen storage bottle through phase change heat transfer, thereby compensating for the heat absorbed by the solid-state hydrogen storage bottle to release hydrogen. At the same time, the air outlet of the fuel cell fan is toward the outside of the solid-state hydrogen storage bottle, which can quickly remove the moisture condensed in the air and attached to the wall of the solid-state hydrogen storage bottle while providing hot air to keep the system dry.

[0034] Specifically, the arc-shaped structure is matched with the outer circumference of the solid hydrogen storage bottle 21, so that the arc-shaped structure can be clamped on the outside of the solid hydrogen storage bottle 21. The outside of the solid hydrogen storage bottle 21 is evenly provided with a plurality of heat pipes 21. Preferably, the heat pipe 22 is arranged at the upper end of the outer circumference of the solid hydrogen storage bottle 21. The heat pipe 22 is made of a high thermal conductivity material, and the inside is an easily evaporable liquid.

[0035] It should be noted that the heat pipe 21 can be connected or bonded to the solid hydrogen storage bottle 21 and the fuel cell 23, preferably, by using a thermally conductive adhesive. The number of heat pipes 22 can be adjusted according to the heat required by the solid hydrogen storage bottle 21 and the fuel cell 23.

[0036] In the present invention, the number of heat pipes 22 is matched according to the 1:1 ratio of the total heat exchange power of the heat pipes 22 to the power of the fuel cell 23. The heat exchange power of a single heat pipe 22 in the present invention is 100W.

[0037] In a specific embodiment, the fuel cell 23 includes a fuel cell body 231, a fuel cell air inlet 232 and a fuel cell fan 233, and the fuel cell body 231 is electrically connected to the control system 24. The air outlet of the fuel cell fan 233 faces the outside of the solid hydrogen storage bottle 21.

[0038] Specifically, the fuel cell air inlet 232 and the fuel cell fan 233 are both fixedly connected to the fuel cell body 231 .

[0039] In a specific embodiment, the solid-state hydrogen storage bottle 21 is composed of a solid-state hydrogen storage bottle body 211 and an integrated pressure reducing valve 212 .

[0040] In a specific embodiment, the integrated pressure reducing valve is provided with a hydrogen charging port 2121 , a hydrogen discharging port 2122 and a pressure sensor 2123 , the hydrogen discharging port 2122 is connected to the fuel cell 23 , and the pressure sensor 2123 is electrically connected to the control system 24 .

[0041] Specifically, the hydrogen discharge port 2122 is connected to the fuel cell 23 through a hydrogen pipeline, the pressure sensor 2123 is electrically connected to the control system 24, and the heat pipe cold end 221 is fixedly connected to the outer periphery of the solid-state hydrogen storage bottle body 211.

[0042] Another specific embodiment of the present invention discloses a solid-state hydrogen storage power-assisted vehicle including the above-mentioned fuel cell power system, wherein the power-assisted vehicle further includes a vehicle body 10, a driven wheel 12, a pedal 13 and a driving wheel 14;

[0043] The fuel cell power system is fixedly arranged inside the power system compartment 11 , and the power system compartment 11 is fixedly connected to the vehicle body 10 . A trigger device is arranged inside the foot pedal 13 , and the trigger device is electrically connected to the control system 24 .

[0044] In a specific implementation, the control system 24 includes a voltage stabilizing module 241 and an electric control module 242 . A trigger device is disposed in the foot pedal 13 , and the trigger device is electrically connected to the electric control module 242 .

[0045] In a specific embodiment, the driving wheel 14 includes a driving wheel motor 141 , the driving wheel motor 141 is connected to the pedal 13 via a chain, and the driving wheel motor 141 is electrically connected to the control system 24 .

[0046] It should be noted that when the foot pedal 13 rotates, an electrical signal is transmitted to the control system 24, and then the fuel cell 23 and the drive wheel motor 141 work.

[0047] In a specific embodiment, the driven wheel 12 is connected to the pedal 13 via a chain.

[0048] The power-assisted bicycle of the present invention can be driven by a driving wheel motor 141 or by human pedaling.

[0049] It should be noted that the voltage stabilizing module 241 can adjust and stabilize the voltage and current output from the fuel cell 23 to the drive wheel motor 141. The electronic control module 242 is composed of electrical and electronic components, and can detect pressure, temperature, flow, voltage, current, and speed signals. It can also perform various calculations, storage, and program execution to achieve programmed control. The specific structures and programs of the control system 24 and the trigger device of the present invention are all prior art.

[0050] The technical solution of the present invention is further explained below in conjunction with specific embodiments.

[0051] Example 1

[0052] like Figure 1-2 As shown, a solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system 2 of the present embodiment includes a solid-state hydrogen storage bottle 21, a heat pipe 22, a fuel cell 23 and a control system 24. The heat pipe 22 of the present embodiment is explained by taking 10 as an example. The heat pipe 22 includes a heat pipe cold end 221 and a heat pipe hot end 222. The heat pipe cold end 221 is connected to the solid-state hydrogen storage bottle 21, and the heat pipe hot end 222 is connected to the fuel cell 23. The fuel cell 23 is located on one side of the solid-state hydrogen storage bottle 21. The control system 24 is connected to the fuel cell 23. The control system 24 controls the output of the fuel cell 23 to make the power-assisted vehicle work.

[0053] Specifically, the heat pipe cold end 221 is an arc-shaped structure, the heat pipe hot end 222 is a straight segment structure, and the heat pipe hot end 222 is smoothly connected to the heat pipe cold end 221. The arc-shaped structure is matched with the outer peripheral shape of the solid hydrogen storage bottle 21, so that the arc-shaped structure can be completely attached to the outside of the solid hydrogen storage bottle 21, and the straight segment structure of the heat pipe hot end 222 is corresponding to the outer shape of the fuel cell 23, so that the heat pipe hot end 222 can be completely attached to the side wall of the fuel cell 23. The heat pipe 22 contains a certain degree of vacuum and easy to evaporate liquid. When the temperature is higher than a certain temperature, it will evaporate and absorb heat and diffuse to other positions in the pipe in a gaseous state. When the temperature is lower than a certain temperature, it will condense and release heat and transfer it to other positions in a liquid state. The temperature of the heat pipe hot end 222 is 60°C, the temperature of the heat pipe cold end 221 is 5°C, the temperature difference is 55°C, and it is prepared by sintering process. The thermal conductivity of the heat pipe 22 is 2100W·m -1 ·K -1 .

[0054] The fuel cell 23 includes a fuel cell body 231, a fuel cell air inlet 232 and a fuel cell fan 233. The fuel cell body 231 is electrically connected to the control system 24. The fuel cell air inlet 232 and the fuel cell fan 233 are both fixedly connected to the fuel cell body 231.

[0055] Specifically, the control system 24 is connected to the fuel cell 23. Specifically, the solid-state hydrogen storage bottle 21 is composed of a solid-state hydrogen storage bottle body 211 and an integrated pressure reducing valve 212. The integrated pressure reducing valve 212 includes a hydrogen filling port 2121, a hydrogen discharge port 2122 and a pressure sensor 2123. The hydrogen discharge port 2122 is connected to the fuel cell 23 through a pipeline, and the pressure sensor 2123 is electrically connected to the control system 24.

[0056] Example 2

[0057] like Figure 3As shown, a solid-state hydrogen storage power-assisted vehicle including the fuel cell power system described in Example 1 also includes a vehicle body 10, a driven wheel 12, a pedal 13 and a driving wheel 14, the fuel cell 23 is arranged inside the power system compartment 11, and the power system compartment 11 is fixedly connected to the vehicle body 10.

[0058] The control system 24 includes a voltage stabilizing module 241 and an electric control module 242 . A trigger device is disposed in the foot pedal 13 , and the trigger device is electrically connected to the electric control module 242 .

[0059] The driving wheel 14 includes a driving wheel motor 141 . The driving wheel motor 141 is connected to the pedal 13 via a chain. The driving wheel motor 141 is electrically connected to the voltage stabilizing module 241 .

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system, characterized in that: The utility model comprises a solid-state hydrogen storage bottle, a heat pipe, a fuel cell and a control system. The solid-state hydrogen storage bottle and the fuel cell are connected through the heat pipe. The fuel cell is located on one side of the solid-state hydrogen storage bottle. The control system is connected to the fuel cell. The control system controls the output of the fuel cell to make the power-assisted vehicle work.

2. A solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system according to claim 1, characterized in that: At least one heat pipe is provided, and the heat pipe comprises a heat pipe cold end and a heat pipe hot end, the heat pipe cold end is connected to the solid-state hydrogen storage bottle, and the heat pipe hot end is connected to the fuel cell.

3. A solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system according to claim 2, characterized in that: The cold end of the heat pipe is an arc-shaped structure, the hot end of the heat pipe is a straight-line segment structure, and the hot end of the heat pipe is connected to the cold end of the heat pipe in a smooth transition.

4. A solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system according to claim 1, characterized in that: The fuel cell comprises a fuel cell body, a fuel cell air inlet and a fuel cell fan. The fuel cell air inlet and the fuel cell fan are both fixedly connected to the fuel cell body. The fuel cell body is electrically connected to the control system.

5. A solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system according to claim 4, characterized in that: The air outlet of the fuel cell fan faces the outside of the solid-state hydrogen storage bottle.

6. A solid-state hydrogen storage power-assisted vehicle heat pipe fuel cell power system according to any one of claims 1 to 5, characterized in that: The solid-state hydrogen storage bottle is composed of a solid-state hydrogen storage bottle body and an integrated pressure reducing valve. The integrated pressure reducing valve is provided with a hydrogen filling port, a hydrogen discharge port and a pressure sensor. The hydrogen discharge port is connected to the fuel cell, and the pressure sensor is connected to the control system.

7. A solid-state hydrogen storage power-assisted vehicle comprising the fuel cell power system according to any one of claims 1 to 6, characterized in that: The power-assisted vehicle also includes a vehicle body, driven wheels, pedals and driving wheels; The fuel cell power system is arranged inside the power system compartment, the power system compartment is fixedly connected to the vehicle body, a trigger device is arranged inside the foot pedal, and the trigger device is electrically connected to the control system.

8. The solid-state hydrogen storage power-assisted vehicle according to claim 7, characterized in that: The control system comprises a voltage stabilizing module and an electric control module. A trigger device is arranged in the foot pedal, and the trigger device is electrically connected to the electric control module.

9. The solid-state hydrogen storage power-assisted vehicle according to claim 7, characterized in that: The driving wheel comprises a driving wheel motor, the driving wheel motor is connected to the foot pedal via a chain, and the driving wheel motor is electrically connected to the control system.

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