Micro fuel cell power generation system

Abstract

The utility model relates to the technical field of hydrogen energy, and discloses a micro fuel cell power generation system which comprises a shell, and a hydrogen storage device and a fuel cell which are arranged in the shell, the hydrogen storage device is communicated with the fuel cell through a hydrogen pipeline, the height of the hydrogen storage device in the Z direction is lower than or equal to the height of the fuel cell in the Z direction, and at least one of the peripheral wall and the top face of the shell is provided with an air inlet. And at least one of the peripheral wall and the top surface of the shell is provided with an air outlet, airflow enters the shell through the air inlet and flows out of the air outlet, or the airflow enters the shell through the air inlet, circulates and then flows out of the air outlet. According to the micro fuel cell power generation system, after the shell is opened, the internal composition can be clearly displayed, no complex airflow path exists, and the working principle of the fuel cell power generation system can be conveniently understood.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen energy, and particularly relates to a micro fuel cell power generation system. Background Art

[0002] In the prior art, a lot of partitions are arranged inside the shell of a solid hydrogen storage power generation system. Components such as a hydrogen storage device and a fuel cell inside the shell are respectively arranged in different spaces surrounded by the partitions. The connecting pipelines, valve parts, etc. between the hydrogen storage device and the fuel cell are easily blocked by the partitions, and some partitions also need to be provided with ventilation holes to meet the gas exchange during the power generation process. In occasions where the internal principle of the solid hydrogen storage power generation system needs to be demonstrated, after the shell is opened, the partitions need to be removed to understand the internal composition. However, when the partitions with ventilation holes are removed, the internal air flow circulation process cannot be understood. Therefore, it is necessary to design a solid hydrogen storage power generation system suitable for being demonstrated. Content of the Utility Model

[0003] The purpose of the utility model is to provide a micro fuel cell power generation system to solve the problems in the prior art that the solid hydrogen storage power generation system has internal partitions, complex air flow circulation, and is not suitable for being demonstrated, etc. as described in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solution:

[0005] A micro fuel cell power generation system includes: a shell, and a hydrogen storage device and a fuel cell arranged inside the shell; the hydrogen storage device is communicated with the fuel cell through a hydrogen pipeline, and the height of the hydrogen storage device along the Z direction is lower than or equal to the height of the fuel cell along the Z direction. At least one of the peripheral wall and the top surface of the shell is provided with an air inlet, and at least one of the peripheral wall and the top surface of the shell is provided with an air outlet. Air flow enters the shell from the air inlet and flows out from the air outlet, or air flow enters the shell from the air inlet, circulates and then flows out from the air outlet. Through this setting, no partition is arranged inside the shell. After the cover part of the shell is opened, the internal composition of the fuel cell power generation system can be demonstrated, which is convenient for understanding the working principle of the fuel cell. In this power generation system, there are no strict requirements for the setting positions of the air inlet and the air outlet, which is easier to realize production and manufacturing, and the waste heat can be maximally utilized.

[0006] The shell has a detachable bottom plate part and a cover part. The bottom plate part includes a bottom plate or a bottom plate and at least one side wall or a bottom plate and four peripheral walls. The cover part includes a top plate or a top plate and at least one side wall or a top plate and four peripheral walls. Through this setting, the composition forms of the bottom plate part and the cover part are diverse and not overly limited. The bottom plate part and the cover part cooperate to form an accommodation space.

[0007] The hydrogen storage device is fixed on the bottom plate. The fuel cell is installed on the bottom plate part or the cover part, and further includes a control component which is installed on the bottom plate part, or the cover part, or the fuel cell. The control component is signal-connected to the fuel cell. The control component can control the start and stop of the fuel cell, and stabilize the voltage and / or current output by the fuel cell. At the same time, it can also control the power supply and stop of other electrical components (exhaust fan, power generation indicator light, device or port that can supply power to the outside).

[0008] Furthermore, it further includes a heat insulation layer. When the control component is installed on the fuel cell, the heat insulation layer separates the two. By setting the heat insulation layer, it can effectively prevent the electronic components in the control component from being damaged due to excessive temperature.

[0009] Furthermore, it further includes a first valve member which is installed in the hydrogen pipeline to adjust the hydrogen supply pressure of the hydrogen storage device to the fuel cell. The first valve member is a pressure reducing valve, and the pressure reducing valve is located in the middle of the gas pipeline from the hydrogen storage bottle of the hydrogen storage device to the fuel cell.

[0010] Furthermore, it further includes a second valve member which is installed on the drainage and exhaust pipe of the fuel cell for discharging waste water and balancing and stabilizing the internal pressure of the fuel cell. The second valve member is an electromagnetic valve.

[0011] Furthermore, the housing is provided with a first through position and a second through position. The first through position is used for passing through the drainage and exhaust pipe of the fuel cell, and the second through position is used for passing through the bottle mouth valve of the hydrogen storage device.

[0012] Furthermore, the size of the housing in the X direction is 160 - 500 mm, the size of the housing in the Y direction is 80 - 400 mm, and the size of the housing in the Z direction is 60 - 300 mm. The overall weight of the micro fuel cell power generation system is between 0.5 kg and 5 kg. Through this setting, the micro fuel cell power generation system is small in volume and weight, and is convenient for handling and display.

[0013] Furthermore, it further includes an exhaust fan which is arranged at the air outlet in the housing. Through this setting, the exhaust fan can accelerate the exhaust and improve the air flow rate in the housing.

[0014] Furthermore, the total area of the air inlet is greater than or equal to the total area of the air outlet. There is no requirement for the number of air inlets and air outlets, as long as the internal heat exchange requirements of the power generation system are met.

[0015] Furthermore, the hydrogen storage device includes a hydrogen storage bottle and a positioning member; the positioning member is installed on the bottom plate of the housing to fix the hydrogen storage bottle on the bottom plate of the housing.

[0016] Further, it also includes a power generation indicator light, a device or port capable of supplying power to the outside, and the power generation indicator light, the device or port capable of supplying power to the outside are installed on the housing and are signal-connected to the control component.

[0017] The utility model has the following advantages compared with the prior art:

[0018] 1. In the micro fuel cell power generation system of the utility model, there is no partition inside the housing, and there is no need to separate components such as the hydrogen storage device and the fuel cell in different spaces. Air inlets and / or air outlets can be provided on the remaining walls of the housing except the bottom. Airflow enters the housing from the air inlet and flows out from the air outlet, or the airflow enters the housing from the air inlet, circulates and then flows out from the air outlet. The air with waste heat in the middle provides heat for the hydrogen storage bottle. The airflow direction inside the housing is not fixed and is disorderly and irregular, making the airflow flow mode simpler. Moreover, the height of the hydrogen storage device along the Z direction in the utility model is lower than or equal to the height of the fuel cell along the Z direction, effectively reducing the height of the housing and facilitating handling. After the above improvements, the internal components of this micro fuel cell power generation system can be clearly displayed after opening the housing, without complex airflow paths, which is convenient for understanding the working principle of the fuel cell power generation system. This micro fuel cell power generation system can be used as a display model.

[0019] 2. In the micro fuel cell power generation system of the utility model, the hydrogen storage device is directly installed on the bottom plate, and the fuel cell can be installed on the bottom plate or on the top plate or the surrounding walls of the housing. For the fuel cell installed on the top plate or the surrounding walls of the housing, its bottom is close to the bottom plate. Through this setting, the height of the entire fuel cell power generation system is reduced; the dimension of the housing along the X direction is 160 - 500 mm, the dimension of the housing along the Y direction is 80 - 400 mm, and the dimension of the housing along the Z direction is 60 - 300 mm. The housing has a small size, making the internal components arranged compactly, so as to minimize the volume of the fuel cell power generation system within a fixed space range; the overall weight of this micro fuel cell power generation system is between 0.5 kg and 5 kg, and the overall weight is light, which is easy to handle. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the micro fuel cell power generation system in the embodiment of the utility model from the first angle;

[0021] Figure 2 It is a schematic structural diagram of the micro fuel cell power generation system in the embodiment of the utility model from the second angle;

[0022] Figure 3 It is a schematic structural diagram of the fuel cell installed on the bottom plate part in the micro fuel cell power generation system in the embodiment of the utility model;

[0023] Figure 4is Figure 3 front view of

[0024] In the figure: 1. housing; 101. bottom plate part; 102. cover part; 103. bottom plate; 104. air inlet; 105. air outlet; 106. first through position; 107. second through position; 2. hydrogen storage device; 201. hydrogen storage bottle; 202. positioning member; 203. bottle mouth valve; 3. fuel cell; 301. fan; 4. hydrogen pipeline; 5. control component; 6. first valve member; 7. second valve member; 8. drain and exhaust pipe; 9. exhaust fan. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0027] In addition, it should be understood that, for the convenience of description, the sizes of the various components shown in the accompanying drawings are not drawn in actual proportional relationships.

[0028] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined or described in one drawing, it will not be necessary to further specifically discuss and describe it in the description of the subsequent drawings.

[0029] Embodiment:

[0030] Such as Figures 1 to 4As shown in the figure, the present utility model provides a micro fuel cell power generation system, comprising: a housing 1, and a hydrogen storage device 2 and a fuel cell 3 arranged within the housing 1; the housing 1 includes a bottom plate portion 101 and a cover portion 102, the bottom plate portion 101 and the cover portion 102 cooperate to form a closed structure with an accommodation space, the hydrogen storage device 2 is installed on the bottom plate portion 101, the fuel cell 3 is installed on the bottom plate portion 101 or the cover portion 102, and the height of the hydrogen storage device 2 along the Z direction is lower than or equal to the height of the fuel cell 3 along the Z direction, the hydrogen storage device 2 supplies hydrogen to the fuel cell 3 through a hydrogen pipeline, and the fan of the fuel cell 3 is close to the hydrogen storage device 2 to supply the heat generated by the fuel cell 3 to the hydrogen storage device 2, so as to improve the hydrogen release rate of the hydrogen storage device 2, at least one of the peripheral wall and the top surface of the housing 1 is provided with an air inlet 104, and at least one of the peripheral wall and the top surface of the housing 1 is provided with an air outlet 105, air flows into the housing from the air inlet and flows out from the air outlet, or air flows into the housing from the air inlet and circulates and then flows out from the air outlet.

[0031] In the micro fuel cell power generation system of this embodiment, no partition is provided inside the housing 1 of the system. After the cover portion 102 of the housing 1 is opened, the internal components of the fuel cell power generation system can be displayed, which is convenient for understanding the working principle of the fuel cell. Fixing the hydrogen storage device 2 to the bottom plate can ensure the safety and stability of the hydrogen storage device and prevent it from falling.

[0032] The hydrogen storage device 2 in this system is installed on the bottom plate portion 101 inside the housing, preferably on the bottom plate 103 of the bottom plate portion 101.

[0033] In the hydrogen storage device 2 in this system, the hydrogen storage bottle 201 adopts Figure 1 As shown in the figure, its central axis is arranged in the horizontal direction. The fuel cell 3 can be selectively installed on the bottom plate 103 or the cover portion 102 of the housing according to the actual situation. After the central axis of the hydrogen storage bottle 201 in the hydrogen storage device 2 is arranged in the horizontal direction, the overall height of the hydrogen storage device 2 is not higher than the height of the fuel cell 3, which can effectively reduce the height of the housing and is convenient for handling. In some other embodiment structures, the overall height of the hydrogen storage device 2 can be made not higher than the height of the fuel cell 3 by increasing the position height of the fuel cell 3 or by shortening the length of the fuel cell in the Y direction to increase the height of the fuel cell in the Z direction.

[0034] In some other embodiment structures, the height of the hydrogen storage bottle 201 can be reduced by increasing the diameter of the hydrogen storage bottle 201, and / or in cooperation with shortening the length of the fuel cell in the Y direction to increase the height of the fuel cell in the Z direction, and by installing the hydrogen storage bottle 201 in the hydrogen storage device 2 with its central axis perpendicular to the horizontal direction in the power generation system, the height of the housing can be effectively reduced and it is convenient for handling.

[0035] In some other embodiment structures, the diameter of the hydrogen storage cylinder 201 can be increased to reduce the height of the hydrogen storage cylinder 201, and the central axis of the hydrogen storage cylinder 201 in the hydrogen storage device 2 can have a certain angle with the horizontal direction (this angle range is 0° to 90°). The setting angle of the hydrogen storage cylinder 201 is not limited. On the basis that the overall height of the hydrogen storage device 2 can be no higher than the height of the fuel cell 3, the size of the fuel cell 3 is adjusted accordingly to achieve the purpose of a compact structure and easy handling.

[0036] In this power generation system, there are no strict requirements for the setting positions and quantities of the air inlet and outlet, which makes production and manufacturing easier. The air flow enters the housing from the air inlet and flows out from the air outlet, or the air flow enters the housing from the air inlet, circulates and then flows out from the air outlet. The air with waste heat in the middle provides heat for the hydrogen storage device, so that the heat of the waste heat is maximally utilized. The total area of the air inlet 104 is greater than or equal to the total area of the air outlet 105 to meet the internal heat exchange. A exhaust fan 9 is provided at the air outlet 105, which can accelerate the exhaust and improve the air flow rate inside the housing. Of course, to ensure the heat exchange efficiency inside the housing. The preferred air flow mode is: the air flow enters the housing through the air inlet and flows through the fuel cell and the hydrogen storage device in sequence and then flows out from the air outlet.

[0037] In this embodiment, the size of the housing in the X direction is adjusted to 160 - 500 mm, the size in the Y direction is adjusted to 80 - 400 mm, and the size in the Z direction is adjusted to 60 - 300 mm to match the fuel cell and the hydrogen storage device with smaller sizes, and the overall weight of the micro fuel cell power generation system is controlled within 0.5 kg - 5 kg. Moreover, the fuel cell 3 is installed on the bottom plate 103 of the bottom plate part 101 or is arranged close to the bottom plate 103, and the height of the hydrogen storage device 2 in the Z direction is lower than or equal to the height of the fuel cell 3 in the Z direction, effectively reducing the height and weight of the fuel cell power generation system to meet the minimization of the volume of the fuel cell power generation system within a fixed space range, so as to occupy less space and be convenient for handling and display.

[0038] The housing 1 has a detachable bottom plate portion 101 and a cover portion 102. The bottom plate portion 101 and the cover portion 102 are made of engineering plastics or metal materials. Among them, the engineering plastics are, for example, cyclic olefin polymers (COC or COP), etc.; polyesters, such as polymethyl methacrylate (PMMA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polycarbonate (PC), etc.; polysulfones, such as polyarylsulfone (PSF), polyethersulfone (PES), etc.; polyamides (PA), such as transparent nylon, etc.; transparent fluoroplastics, such as poly(vinylidene fluoride - hexafluoropropylene) (PVDF - HFP) copolymer, etc., and transparent polyimide (PI), etc. The metal materials are aluminum alloy, alloy steel, carbon steel, stainless steel 304, 316, 304L, 316L, etc. The housing can withstand an instantaneous impact force 10 - 100 times its own weight and a static pressure 10 - 1000 times its own weight, and still ensure the normal operation of the micro - fuel cell power generation system when subjected to the instantaneous impact force and / or static pressure.

[0039] The bottom plate portion 101 and the cover portion 102 are combined to form a closed structure with an accommodation space. Among them, there are various combination forms of the bottom plate portion 101 and the cover portion 102. For example: First, the bottom plate portion only includes the bottom plate, and the cover portion includes the top plate and the surrounding walls; Second, the bottom plate portion includes the bottom plate and one side wall, and the corresponding cover portion includes the top plate and the other three side walls; Third, the bottom plate portion includes the bottom plate and two side walls, and the corresponding cover portion includes the top plate and the other two side walls; Fourth, the bottom plate portion includes the bottom plate and three side walls, and the corresponding cover portion includes the top plate and the other one side wall; Fifth, the bottom plate portion includes the bottom plate and the surrounding walls, and the corresponding cover portion only includes the top plate. In specific applications, the combination of the bottom plate portion 101 and the cover portion 102 is reasonably selected to make the internal layout of the housing reasonable and convenient for display. The hydrogen storage device is installed on the bottom plate of the bottom plate portion in any one of the structures. It is located on one side of the fan 301 of the fuel cell. The heat generated by the fuel cell is provided to the hydrogen storage device through the fan 301 of the fuel cell to make full use of this heat to improve the hydrogen release rate and hydrogen release amount of the hydrogen storage cylinder in the hydrogen storage device.

[0040] Specifically, a hydrogen storage device 2 is arranged inside the housing 1, and hydrogen is supplied to the fuel cell through a hydrogen pipeline composed of connectors and pipe fittings. The fuel cell 3 and the hydrogen storage device 2 are of an open structure, and the waste heat generated by the fuel cell 3 is directly supplied to the hydrogen storage device 2 to improve the hydrogen release performance of the hydrogen storage device 2 and increase the hydrogen release rate. The housing 1 also includes a first valve member 6 and a second valve member 7. The first valve member 6 is a pressure reducing valve, which is located in the hydrogen pipeline from the hydrogen storage cylinder of the hydrogen storage device to the fuel cell and is used to adjust the hydrogen supply pressure of the hydrogen storage device to the fuel cell. The second valve member 7 is a solenoid valve, which is installed in the drainage and exhaust pipeline of the fuel cell and is used to discharge waste water and balance and stabilize the internal pressure of the fuel cell. The bottom plate part or the cover part of the housing has a first through position 106 for penetrating the drainage and exhaust pipe, and a second through position 107 for penetrating the bottle mouth valve of the hydrogen storage cylinder in the hydrogen storage device. The bottle mouth valve can be adjusted through the second through position 107, thereby adjusting the hydrogen release rate of the hydrogen storage cylinder. In order to make the layout inside the housing reasonable and reduce the volume of the housing, both the first valve member 6 and the second valve member 7 are installed on the bottom plate part of the housing. The hydrogen storage device 2, the first valve member 6, and the second valve member 6 are all installed on the bottom plate of the bottom plate part, and the bottom plate part can bear and resist the gravity and pressure of the hydrogen storage device and the valve members installed on the bottom plate part.

[0041] The housing also includes a control component 5, which is installed on the side wall of the housing 1 or on the fuel cell 3, and the control component is signal-connected to the fuel cell 3. The control component 5 can control the start and stop of the fuel cell 3 and stabilize the voltage and / or current output by the fuel cell. At the same time, it can also control the power supply and stop of other electrical components (exhaust fan, power generation indicator light, device or port that can supply power to the outside). When the control component 5 is installed on the fuel cell 3, a heat insulation layer is provided between the control component 5 and the fuel cell 3, which can effectively prevent the electronic components in the control component from being damaged due to excessive temperature.

[0042] The hydrogen storage device 2 includes a hydrogen storage cylinder 201 and a positioning member 202. The positioning member 202 is made of engineering plastic or metal material. The positioning member 202 is installed on the bottom plate 103, and the hydrogen storage cylinder 201 is installed on the positioning member 202 to ensure the constant position of the hydrogen storage cylinder 201 in the micro fuel cell power generation system. The positioning member 202 can be a structure that imitates the shape of the hydrogen storage cylinder; it can also be a structure that can be clamped and fixed with the hydrogen storage cylinder 201; or the positioning member 202 is only used to limit the position of the hydrogen storage cylinder 201, and the hydrogen storage cylinder 201 is connected to the positioning member 202 through a limiting component for fixation. The simplest positioning member can use a clamp, a PVC buckle, etc. A power generation indicator light, a device or port that can supply power to the outside, etc. can also be arranged outside the housing. The power generation indicator light, the device or port that can supply power to the outside are all signal-connected to the control component and are controlled by the control component to work.

[0043] The layout inside the housing is briefly described below according to different combinations of the bottom plate part 101 and the cover part 102:

[0044] When the housing structure is such that the bottom plate part only has the bottom plate part, and the cover part has a top plate and the surrounding walls connected to the top plate (as shown in Figure 3 and Figure 4 ), the inside of the housing can be laid out as follows:

[0045] The first structure: The hydrogen storage device and the fuel cell are installed on the bottom plate part of the housing, and the position of the hydrogen storage device is lower than or equal to the position of the fuel cell. The control component is installed above the fuel cell, and there is a heat insulation layer between the control component and the fuel cell. When the fuel cell works, it generates a large amount of heat, and the heat insulation layer can effectively prevent the control component from damaging electronic components due to excessive temperature.

[0046] On the top surface of the cover part of the housing or on at least one of the surrounding walls connected to the top surface, there are an air inlet and an air outlet provided on at least one surface, wherein the total area of the air inlets is larger than the total area of the air outlets, and a exhaust fan is provided at the air outlet.

[0047] The second structure: The fuel cell can be selectively installed on the top plate of the cover part of the housing or on any one of the peripheral walls connected to the top plate, and the control component can be selectively installed on the top plate of the cover part of the housing or on any one of the peripheral walls connected to the top plate. The fuel cell and the control component can also be installed together. When they are installed together, there is a heat insulation layer between the control component and the fuel cell. When the fuel cell works, it generates a large amount of heat, and the heat insulation layer can effectively prevent the control component from damaging electronic components due to excessive temperature.

[0048] The position of the hydrogen storage device is always lower than or equal to the position of the fuel cell. On the top plate of the cover part of the housing and on the peripheral walls connected to the top plate, there are an air inlet and an air outlet provided on at least one surface, wherein the total area of the air inlets is larger than the total area of the air outlets, and a exhaust fan is provided at the air outlet.

[0049] When the housing structure is such that the bottom plate part has a bottom plate and at least one side wall connected to the bottom plate, and the cover part has a top plate and at least one side wall connected to the top plate, the housing has the following layout:

[0050] The third: The fuel cell can be selectively installed on the bottom plate part of the housing, or the fuel cell is installed on the side wall of the bottom plate part, or the fuel cell is installed on the top surface of the cover part, or the fuel cell is installed on the side wall of the cover part;

[0051] The control component can be selectively installed on the bottom plate part of the housing, or the fuel cell is installed on the side wall of the bottom plate part, or the fuel cell is installed on the top plate of the cover part, or the fuel cell is installed on the side wall of the cover part;

[0052] The fuel cell and the control component can be installed together. When they are installed together, a heat insulation layer is provided between the control component and the fuel cell. When the fuel cell operates, a large amount of heat is generated, and the heat insulation layer can effectively prevent the control component from damaging electronic components due to excessive temperature.

[0053] The hydrogen storage device is always installed on the bottom plate, and the position of the hydrogen storage device is lower than or equal to or higher than the position of the fuel cell.

[0054] On at least one of the top plate of the cover part of the housing, at least one side wall connected to the top plate, and the side wall of the bottom plate part and the bottom plate, an air inlet and an air outlet are provided. Among them, the total area of the air inlets is larger than the total area of the air outlets, and an exhaust fan is provided at the air outlet.

[0055] When the housing structure is that the bottom plate part has a bottom plate and a peripheral wall connected to the bottom plate, and the cover part has a top plate, the layout inside the housing can be as follows:

[0056] The fourth structure: The fuel cell can be selectively installed on the bottom plate of the housing, or the fuel cell is installed on the peripheral wall of the bottom plate, or the fuel cell is installed on the top plate of the cover part;

[0057] The control component can be selectively installed on the bottom plate of the housing, or the fuel cell is installed on the peripheral wall of the bottom plate part, or the fuel cell is installed on the top plate of the cover part;

[0058] The fuel cell and the control component can be installed together. When they are installed together, a heat insulation layer is provided between the control component and the fuel cell. When the fuel cell operates, a large amount of heat is generated, and the heat insulation layer can effectively prevent the control component from damaging electronic components due to excessive temperature.

[0059] The hydrogen storage device is installed on the bottom plate and its position is lower than or equal to or higher than the position of the fuel cell.

[0060] On at least one of the top plate of the cover part of the housing and the peripheral wall of the bottom plate part connected to the bottom plate, an air inlet and an air outlet are provided. Among them, the total area of the air inlets is larger than the total area of the air outlets, and an exhaust fan is provided at the air outlet.

[0061] The above four structural forms can be briefly described as:

[0062] 1. The hydrogen storage device, the first valve member, and the second valve member can only be installed on the bottom surface of the bottom plate part;

[0063] 2. The exhaust fan can be installed on the other 5 surfaces except the bottom surface, corresponding to the position of the air outlet;

[0064] 3. The air inlet and the air outlet are arranged on the other five surfaces except the bottom surface. The number and positions of the air inlet and the air outlet are not considered, but it is necessary to ensure that the air flow in the housing enters the housing from the air inlet and flows out from the air outlet. The air with waste heat in the middle provides heat for the hydrogen storage device, and the area of the air inlet is larger than that of the air outlet.

[0065] 4. The positions of the fuel cell and the controller can be installed on any of the six surfaces, and they can be installed together or separately.

[0066] In this micro fuel cell power generation system, the overall composition structure of the micro fuel cell power generation system is simple and occupies a small space. Since its overall weight is between 0.50 kg and 5 kg, its overall working principle is as follows: the hydrogen storage device provides hydrogen for the fuel cell, and the external air inlet provides oxygen for the fuel cell to generate electricity. The waste heat generated by the fuel cell power generation is blown towards the hydrogen storage device by the fuel cell fan installed on the fuel cell to improve the hydrogen release performance of the hydrogen storage device and increase the hydrogen release rate. Since there is no separated space in the housing containing the fuel cell, the hydrogen storage bottle in the hydrogen storage device can absorb the waste heat to the maximum extent, making the hydrogen release performance of the hydrogen storage bottle reach the best. The air flow enters the housing from the air inlet and flows out from the air outlet, or the air flow enters the housing from the air inlet, circulates and then flows out from the air outlet. The air with waste heat in the middle provides heat for the hydrogen storage bottle, and the air flow direction inside the housing is non-fixed, disordered and irregular.

[0067] In the present utility model, the height of the hydrogen storage device along the Z direction is set to be lower than or equal to the height of the fuel cell along the Z direction, which can minimize the height of the entire fuel cell power generation system to meet the requirement of minimizing the volume of the fuel cell power generation system within a fixed space range. The air flow enters the housing from the air inlet and flows out from the air outlet, or the air flow enters the housing from the air inlet, circulates and then flows out from the air outlet. The air with waste heat in the middle provides heat for the hydrogen storage bottle, and the air flow direction inside the housing is non-fixed, disordered and irregular, making the air flow mode simpler. There are no strict requirements for the installation positions of the air inlet and the air outlet, which is easier to realize production and manufacturing, and the waste heat can be maximally utilized, effectively improving the heat exchange efficiency of the solid hydrogen storage device. Moreover, the fuel cell power generation system has a simple structure, is convenient for production and manufacturing, has a high degree of integration, is small in size, light in weight, portable and easy to carry, and is convenient for maintenance. By adjusting the bottle mouth valve of the hydrogen storage bottle, the hydrogen supply amount to the fuel cell can be controlled to realize the adjustment of the power supply power. It can be placed in a small space and can also realize small power supply, and can be easily displayed at the same time.

[0068] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A micro fuel cell power generation system, characterized in that, Comprising: A housing, and a hydrogen storage device and a fuel cell disposed within the housing; the hydrogen storage device is communicated with the fuel cell through a hydrogen pipeline, and the height of the hydrogen storage device along the Z direction is lower than or equal to or higher than the height of the fuel cell along the Z direction. At least one of the peripheral wall and the top surface of the housing is provided with an air inlet, and at least one of the peripheral wall and the top surface of the housing is provided with an air outlet. Airflow enters the housing from the air inlet and exits from the air outlet, or airflow enters the housing from the air inlet, circulates, and then exits from the air outlet.

2. The micro fuel cell power generation system according to claim 1, characterized in that: The housing has a detachable bottom plate portion and a cover portion. The bottom plate portion includes a bottom plate or a bottom plate and at least one side wall or a bottom plate and four peripheral walls. The cover portion includes a top plate or a top plate and at least one side wall or a top plate and four peripheral walls.

3. The micro fuel cell power generation system according to claim 2, characterized in that: The fuel cell is installed on the bottom plate portion or the cover portion, and further includes a control component. The control component is installed on the bottom plate portion or the cover portion or the fuel cell, and the control component is signal-connected to the fuel cell.

4. The micro fuel cell power generation system according to claim 3, characterized in that: It further includes a heat insulation layer. When the control component is installed on the fuel cell, the heat insulation layer separates the two.

5. The micro fuel cell power generation system according to claim 1, characterized in that: It further includes a first valve member. The first valve member is installed in the hydrogen pipeline to adjust the hydrogen supply pressure of the hydrogen storage device to the fuel cell.

6. The micro fuel cell power generation system according to claim 1, characterized in that: It further includes a second valve member. The second valve member is installed in the drain exhaust pipe of the fuel cell for discharging waste water and balancing and stabilizing the internal pressure of the fuel cell.

7. The micro fuel cell power generation system according to claim 6, characterized in that: The housing is provided with a first through position and a second through position. The first through position is used for passing through the drain exhaust pipe of the fuel cell, and the second through position is used for passing through the bottle valve of the hydrogen storage device.

8. The micro fuel cell power generation system according to claim 1, characterized in that: The size of the housing along the X direction is 160 - 500 mm, the size of the housing along the Y direction is 80 - 400 mm, and the size of the housing along the Z direction is 60 - 300 mm.

9. The micro fuel cell power generation system according to claim 1, wherein: The total weight of the micro fuel cell power generation system is between 0.5 kg and 5 kg.

10. The micro fuel cell power generation system according to claim 1, wherein: The total area of the air inlets is greater than or equal to the total area of the air outlets.

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