Fuel cell power supply

Abstract

The utility model discloses a fuel cell power supply, and belongs to the field of new energy application. Comprising a box body, a fixed bracket, a hydrogen storage device and a fuel cell, the fixing support comprises a supporting plate and a partition plate, wherein the supporting plate is arranged in the box body, a preset gap is reserved between the supporting plate and the bottom wall of the box body, and the partition plate is perpendicular to the supporting plate and divides the box body into two cavities. The hydrogen storage device is mounted on one side of the fixed bracket in a separable manner; the fuel cell is fixedly installed on the other side of the partition plate and the supporting plate and connected with the hydrogen storage device through a pipeline. According to the fuel cell power supply, the fuel cell, the hydrogen storage device and other electrical components are integrated on the fixed bracket to form an assembly structure with higher integration degree, so that the compactness of the fuel cell power supply is improved, the overall volume of the fuel cell power supply is effectively reduced, and the small-space mounting requirements in various scenes are met.

Description

Technical Field

[0001] The utility model belongs to the field of new energy applications, in particular to a fuel cell power supply. Background Art

[0002] Hydrogen fuel cells are environmentally friendly. They work through electrochemical reactions, rather than combustion (gasoline, diesel) or energy storage (battery) - the most typical traditional backup power solution. Combustion releases pollutants such as COx, NOx, SOx gases and dust. As mentioned above, hydrogen fuel cells only produce water and heat. If hydrogen is produced through renewable energy (photovoltaic panels, wind power generation, etc.), the entire cycle is a complete process without harmful emissions. The power generation efficiency of hydrogen fuel cells can reach more than 50%, which is determined by the conversion properties of fuel cells, which directly convert chemical energy into electrical energy without the need for intermediate conversion of thermal energy and mechanical energy (generator). Hydrogen fuel cells are power generation devices that directly convert the chemical energy of hydrogen and oxygen into electrical energy.

[0003] The fuel cell power supply includes a fuel cell stack (used to realize the reaction between the fuel gas and the combustion-supporting gas), a control system (the control core of the fuel cell system, which can control the operation of the fuel cell system according to the built-in control program), a hydrogen storage device (provides hydrogen for the fuel cell) and auxiliary components (including various pipes, pipe joints, valves, cables and other auxiliary accessories). However, the existing fuel cell power supply has the following defects and shortcomings: First, the protection of the hydrogen storage device and the fuel cell is not good enough during use, resulting in poor stability of the hydrogen storage device and the fuel cell, which brings inconvenience to the user's use process; second, the condensed water discharged by the hydrogen fuel cell is enriched inside the container or the installation area, which is easy to affect the fuel cell and other electrical components, posing a safety hazard. Utility Model Content

[0004] In order to overcome the above technical defects, the utility model provides a fuel cell power supply to solve the problems involved in the background technology.

[0005] The utility model provides a fuel cell power supply, comprising:

[0006] Box;

[0007] A fixed bracket, comprising a support plate arranged inside the box body and having a predetermined gap between the support plate and the bottom wall of the box body, and a partition plate perpendicular to the support plate and dividing the box body into two cavities;

[0008] A hydrogen storage device is detachably mounted on one side of the fixed support;

[0009] The fuel cell is fixedly mounted on the other side of the partition plate and the support plate, and the fuel cell is connected to the pipeline of the hydrogen storage device.

[0010] Preferably or optionally, a ventilation hole is reserved on the partition to connect the two cavities where the hydrogen storage device and the fuel cell are located.

[0011] Preferably or optionally, a fan is fixedly mounted on one side of the exhaust outlet of the fuel cell, and an air outlet end of the fan is directly opposite to the vent.

[0012] Preferably or optionally, the fuel cell bottom is mounted on the support plate via a shock absorbing device.

[0013] Preferably or optionally, the hydrogen storage device is fixedly mounted on the fixed bracket via a mounting seat;

[0014] The mounting seat includes: a plurality of limit plates mounted on the partition and parallel to the support plate, limit holes arranged on the limit plates and on the support plate and adapted to the outer wheel of the hydrogen storage device, and a fixed limit device arranged on the upper part of the hydrogen storage device.

[0015] Preferably or optionally, the fixed limiting device is located on the uppermost limiting plate and is suitable for fixing the hydrogen storage device and the pressure reducing valve.

[0016] Preferably or optionally, an exhaust solenoid valve is provided at the bottom of the fuel cell, and an outlet end of the exhaust solenoid valve extends to the bottom of the support plate.

[0017] Preferably or optionally, an air inlet is provided on one side of the box;

[0018] The air inlet corresponds to the cathode side air inlet of the fuel cell, and a filter screen is arranged inside the air inlet.

[0019] Preferably or optionally, an air outlet is provided on the other side of the box;

[0020] The gas outlet corresponds to the hydrogen storage device, and the gas outlet is an annular through hole or a plurality of through holes distributed in an annular shape.

[0021] Preferably or optionally, a DC-DC conversion module, a central control module and a relay are also installed on the fixed bracket.

[0022] The utility model relates to a fuel cell power supply, which has the following beneficial effects compared with the prior art: the utility model integrates a fuel cell, a hydrogen storage device and other electrical components on a fixed bracket to form a component structure with a high degree of integration, thereby improving the compactness of the fuel cell power supply, effectively reducing the overall volume of the fuel cell power supply, and meeting the installation requirements of small spaces in various scenarios. In addition, a predetermined gap is left between the fixed bracket and the bottom of the box to prevent condensed water from accumulating inside the fixed bracket and affecting the normal operation of the fuel cell and electrical components. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of the power supply in the utility model.

[0024] Figure 2 It is a structural schematic diagram of the power source (hidden box) in the utility model.

[0025] Figure 3 It is a partial enlarged view of the vicinity of the hydrogen outlet of the hydrogen storage device in the utility model.

[0026] Figure 4 It is a side view schematic diagram of the power source (hidden box and support plate) in the utility model.

[0027] Figure 5 It is a structural schematic diagram of a box body and a fixing bracket in the utility model.

[0028] The accompanying drawings are marked as follows:

[0029] 100, box body; 110, air inlet; 120, air outlet;

[0030] 200, fixed bracket; 210, support plate; 220, partition; 230, vent; 240, mounting seat; 241, limit plate; 242, limit hole; 243, fixed limit device;

[0031] 300, hydrogen storage device; 310, hydrogen storage container; 320, three-way joint; 330, pressure reducing valve; 340, hydrogen pipeline; 350, air intake solenoid valve; 360, air intake interface;

[0032] 400, fuel cell; 410, fan; 421, reinforcement plate; 422, connecting guide column; 423, shock absorbing spring; 430, exhaust solenoid valve;

[0033] 500. DC-DC conversion module;

[0034] 600, central control module;

[0035] 700. Relay. DETAILED DESCRIPTION

[0036] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0037] See attached Figures 1 to 5 A hydrogen fuel cell 400 power supply includes: a box 100, a fixing bracket 200, a hydrogen storage device 300, a fuel cell 400, a DC-DC conversion module 500, a central control module 600 and a relay 700.

[0038] See attached Figure 1 The fixed bracket 200 includes a support plate 210 disposed inside the box 100 and having a predetermined gap with the bottom wall of the box 100, and a partition 220 perpendicular to the support plate 210, dividing the box 100 into two cavities; a plurality of wiring holes are reserved on the support plate 210 and the partition 220, which are used for gas connection and circuit connection respectively. The hydrogen storage device 300 is a solid-state hydrogen storage device 300, and is detachably mounted on one side of the partition 220; the fuel cell 400 is fixedly mounted on the other side of the partition 220 and the support plate 210, and the fuel cell 400 is connected to the hydrogen storage device 300 by pipeline. The DC-DC conversion module 500, the central control module 600, the relay 700 and other electrical components are fixed on the fixed bracket 200 through mounting holes.

[0039] This embodiment integrates the fuel cell 400, the hydrogen storage device 300 and other electrical components on the fixed bracket 200 to form a highly integrated component structure, thereby improving the compactness of the power supply, effectively reducing the overall volume of the power supply, and meeting the installation requirements of small spaces in various scenarios. In addition, a predetermined gap is left between the fixed bracket 200 and the bottom of the box body 100 to prevent it from accumulating inside the fixed bracket 200, thereby reducing the impact of condensed water on the fuel cell 400 and the electrical components.

[0040] In further embodiments, see the attached Figure 5 The partition plate 220 is provided with a vent 230 to connect the two cavities where the hydrogen storage device 300 and the fuel cell 400 are located. The hot air on the fuel cell 400 side flows directly into the hydrogen storage device 300 to heat the hydrogen storage device 300, increase the speed of hydrogen release from the hydrogen storage device 300, and effectively utilize the waste heat of the fuel cell 400.

[0041] In a further embodiment, an air inlet 110 is provided on one side of the housing 100; the air inlet 110 corresponds to the cathode side air inlet 110 of the fuel cell 400, and a filter is provided on the inner side of the air inlet 110. A fan 410 is provided on one side of the exhaust outlet on the cathode side of the fuel cell 400, and the fan 410 is fixedly mounted on the partition 220, and the air outlet of the fan 410 faces the vent 230. The fan 410 guides the external air into the fuel cell 400, and the exhaust gas is introduced into the cavity on the side of the hydrogen storage device 300. In addition, a small amount of water vapor is also carried in the gas discharged from the exhaust outlet. As the water vapor condenses and releases latent heat, the heat utilization rate of the fuel cell 400 can be further improved.

[0042] In a further embodiment, an air outlet 120 is provided on the other side of the housing 100; the air outlet 120 corresponds to the hydrogen storage device 300, and the air outlet 120 is an annular through hole or a plurality of through holes distributed in an annular pattern. An air outlet 120 is provided on the other side of the housing 100; and the ventilation area of ​​the vent 230 is at least greater than the sum of the ventilation areas of the air outlets 120. Preferably, the ventilation area of ​​the vent 230 is 3 to 5 times the sum of the ventilation areas of the air outlets 120. Since the air outlet 120 is an annular through hole or a plurality of through holes distributed in an annular pattern, and the ventilation area of ​​the air outlet 120 is only 1 / 5 to 1 / 3 of the ventilation area of ​​the vent 230, most of the hot air cannot be directly discharged, so that the heat generated by the fuel cell 400 can form an internal circulation in the cavity on the side of the hydrogen storage device 300, thereby increasing the residence time of the hot air in the cavity on the side of the fuel cell 400, and facilitating the hydrogen storage alloy in the hydrogen storage device 300 to absorb heat and release hydrogen. A reasonable configuration and dynamic balance of the heat of the fuel cell 400 and the hydrogen storage device 300 is achieved, so that the waste heat of the fuel cell 400 can be effectively utilized.

[0043] In further embodiments, see the attached Figure 4 , the bottom of the fuel cell 400 is installed on the support plate 210 through a shock absorbing device. The shock absorbing device includes a reinforcing plate 421 arranged at the bottom of the support plate 210, the side shape of which is or is approximately Ω-shaped, four connecting guide pillars 422 fixedly connected to the reinforcing plate 421 and the support plate 210, and extending to the upper part of the support plate 210 and plugged into the fuel cell 400, and four shock absorbing springs 423 arranged at the bottom of the fuel cell 400 and the support of the support plate 210. The shock absorbing spring 423 is installed at the bottom of the fuel cell 400, which has the function of shock absorption; and the reinforcing plate 421 is also installed at the position where the fuel cell 400 and the support plate 210 are fixed, which plays a role in increasing the structural strength of the support plate 210 in this range, thereby achieving the purpose of reinforcing and strengthening the structure of the fixed support 200 and improving the force bearing capacity.

[0044] In further embodiments, see the attached Figure 2 , Attachment Figure 3 , the hydrogen storage device 300 is fixedly mounted on the fixed bracket 200 through a mounting seat 240; the mounting seat 240 includes: a plurality of limit plates 241 mounted on the partition 220 and parallel to the support plate 210, limit holes 242 arranged on the limit plates 241 and on the support plate 210 and adapted to the outer wheel of the hydrogen storage device 300, and a fixed limit device 243 arranged on the upper part of the hydrogen storage device 300. The hydrogen storage device 300 includes at least two cylindrical hydrogen storage containers 310, and the fixed limit device 243 can be a rigid connector or a connector such as a rope when integrated, which can not only fix the upper parts of the two hydrogen storage containers 310 together, but also can be used to lift and fix the pressure reducing valve. Then the hydrogen storage container 310 is clamped on the limiting plate 241 and the support plate 210 along the limiting hole 242, and a buffer pad is arranged on the bottom plate of the box body 100 in contact with the hydrogen storage container 310 to provide buffer protection for the hydrogen storage container 310, absorb shock and vibration, and reduce unnecessary damage to the hydrogen storage container 310 during movement. A silicone protective strip is installed on the inner side of the limiting hole 242 to avoid damage to the hydrogen storage container 310 caused by collision, friction and vibration. Finally, the position of the hydrogen storage device 300 in the vertical direction is limited by fixing the limiting device 243 to fix the hydrogen storage device 300. In addition, a plurality of holes are distributed on the limiting plate 241 to facilitate hot air circulation.

[0045] In a further embodiment, the bottle valve of the hydrogen storage container 310 is opened, and the hydrogen is output from the two hydrogen storage containers 310 and merged into one path through the three-way joint 320, and then enters the fuel cell 400 through the pressure reducing valve 330, the hydrogen pipeline 340, the air intake solenoid valve 350, and the air intake interface 360. An exhaust solenoid valve 430 is provided at the bottom of the fuel cell 400, and the outlet end of the exhaust solenoid valve 430 extends to the bottom of the support plate 210, and then the unreacted hydrogen and the water produced by the reaction are discharged through the exhaust solenoid valve 430. The exhaust solenoid valve 430 leads the pipeline through the hydrogen discharge hole on the bottom plate of the box body 100 to discharge the unreacted hydrogen and the water produced by the reaction outside the box body 100. In addition, a pressure sensor is also provided on the hydrogen pipeline 340 between the pressure reducing valve 330 and the air intake solenoid valve 350 to detect the gas pressure in the hydrogen pipeline 340 to prevent the pressure from being too high and thus damaging the fuel cell 400.

[0046] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A fuel cell power source, characterized in that: include: Box; A fixed bracket, comprising a support plate arranged inside the box body and having a predetermined gap between the support plate and the bottom wall of the box body, and a partition plate perpendicular to the support plate and dividing the box body into two cavities; A hydrogen storage device is detachably mounted on one side of the partition; The fuel cell is fixedly mounted on the other side of the partition plate and the support plate, and the fuel cell is connected to the pipeline of the hydrogen storage device.

2. The fuel cell power supply according to claim 1, characterized in that: A vent is reserved on the partition to connect the two cavities where the hydrogen storage device and the fuel cell are located.

3. The fuel cell power supply according to claim 2, characterized in that: A fan is fixedly installed on one side of the fuel cell tail gas outlet, and the fan air outlet is directly opposite to the vent.

4. The fuel cell power supply according to claim 1, characterized in that: The bottom of the fuel cell is mounted on the support plate via a shock absorbing device.

5. The fuel cell power supply according to claim 1, characterized in that: The hydrogen storage device is fixedly mounted on the fixing bracket via a mounting seat; The mounting seat includes: a plurality of limit plates mounted on the partition and parallel to the support plate, limit holes arranged on the limit plates and on the support plate and adapted to the outer wheel of the hydrogen storage device, and a fixed limit device arranged on the upper part of the hydrogen storage device.

6. The fuel cell power supply according to claim 5, characterized in that: The fixed limiting device is located on the uppermost limiting plate and is suitable for fixing the hydrogen storage device and the pressure reducing valve.

7. The fuel cell power supply according to claim 1, characterized in that: An exhaust solenoid valve is disposed at the bottom of the fuel cell, and an outlet end of the exhaust solenoid valve extends to the bottom of the support plate.

8. The fuel cell power source according to claim 1, characterized in that: An air inlet is provided on one side of the box body; The air inlet corresponds to the cathode side air inlet of the fuel cell, and a filter screen is arranged inside the air inlet.

9. The fuel cell power supply according to claim 8, characterized in that: An air outlet is provided on the other side of the box body; The gas outlet corresponds to the hydrogen storage device, and the gas outlet is an annular through hole or a plurality of through holes distributed in an annular shape.

10. The fuel cell power source according to any one of claims 1 to 9, characterized in that: The fixed bracket is also equipped with a DC-DC conversion module, a central control module and a relay.

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