Fuel cell system and electric equipment

Abstract

The utility model relates to the technical field of fuel cells, and particularly provides a fuel cell system and electric equipment. The fuel cell system comprises a shell as well as an electric pile, an electric pile support frame and a hydrogen subsystem which are arranged in an inner cavity of the shell, wherein a plurality of ventilation openings are formed in the side wall of the shell; the electric pile is arranged on the electric pile supporting frame; the hydrogen subsystem is arranged in a lower space or a side space of the galvanic pile supporting frame; and a hydrogen outlet of the hydrogen subsystem is connected with a hydrogen inlet of the electric pile. Wherein the side wall of the shell is provided with a plurality of ventilation openings, and the electric pile is arranged on the electric pile supporting frame, so that heat generated by electrochemical reaction of the electric pile can be brought out by air convection of the ventilation openings, and the electric pile is cooled in an air convection manner; therefore, even if the fuel cell system is applied to a water-deficient field environment, heat dissipation can be carried out, so that the problems in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell technology field, concretely relates to fuel cell system and electrical equipment. BACKGROUND

[0002] Fuel cell system is a kind of power generation device with hydrogen as fuel, and the chemical energy in hydrogen is directly converted into electric energy by electrochemical reaction.In the process of power generation, a large amount of heat is often generated, in order to ensure the stable operation of fuel cell system, a heat dissipation subsystem is usually arranged in the structural design process of fuel cell system, and the generated heat is partially or completely discharged through the heat dissipation subsystem.

[0003] In the technical scheme disclosed in the patent CN218447974U, the main implementation mode of the heat dissipation subsystem is to set cooling flow channel (including anode cooling flow channel, cathode cooling flow channel, etc.) in the bipolar plate of fuel cell stack, and the cooling liquid in the cooling flow channel is usually water.The heat generated by the electrochemical reaction in the stack is carried out by the water in the cooling flow channel.

[0004] However, when the fuel cell system is used as a power supply device for field equipment (such as communication base station, etc.), it is usually difficult to provide enough water as cooling liquid in field environment, so the heat dissipation subsystem of this heat dissipation mode is usually not applicable in this scenario. SUMMARY

[0005] In view of the defects in the prior art, the purpose of the utility model is to provide a kind of fuel cell system and electrical equipment, to solve the technical problems in related technology to some extent.

[0006] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0007] The embodiment of the application provides a kind of fuel cell system, comprising: shell and the electric pile, electric pile support frame and hydrogen subsystem of the cavity of being arranged in the shell inside, wherein:

[0008] The side wall of the shell is provided with a plurality of ventilation openings;

[0009] The electric pile is arranged on the electric pile support frame;

[0010] The hydrogen subsystem is arranged in the space below or the side space of the electric pile support frame;

[0011] The hydrogen outlet of the hydrogen subsystem is connected to the hydrogen inlet of the electric pile.

[0012] Preferably, the top inner wall of the shell is provided with a hydrogen sensor.

[0013] Preferably, the periphery of the stack is provided with a wind collecting cover.

[0014] Preferably, the fuel cell system further comprises a voltage converter, wherein the current transmission port of the voltage converter is connected with the electrode of the stack; and,

[0015] The voltage converter is arranged on the inner wall of the side wall of the shell.

[0016] Preferably, the shell is provided with the voltage converter, the upper end of the side wall of the shell is provided with a plurality of cooling fans; and the lower end of the side wall of the shell is provided with a cooling hole.

[0017] Preferably, the shell is provided with the voltage converter, the outer wall of the side wall of the shell is provided with a state display screen.

[0018] Preferably, the shell is provided with the voltage converter, the opposite side wall of the side wall of the shell is provided with a sensor assembly and a hydrogen inlet of the hydrogen subsystem.

[0019] Preferably, the opposite side wall is further provided with a high-voltage output connector and a low-voltage output connector, and the edge of the low-voltage output connector is provided with a cooling hole.

[0020] Preferably, the outer wall of the top of the shell is provided with a handle.

[0021] The fuel cell system provided by the embodiment of the present application is also provided.

[0022] Compared with the prior art, the fuel cell system provided by the embodiment of the present application has the following advantages:

[0023] The fuel cell system provided by the embodiment of the present application comprises a shell, a stack, a stack support frame and a hydrogen subsystem arranged in the internal cavity of the shell. The hydrogen subsystem is arranged in the lower space or the side space of the stack support frame. The hydrogen outlet of the hydrogen subsystem is connected with the hydrogen inlet of the stack. Since the side wall of the shell is provided with a plurality of ventilation openings, and the stack is arranged on the stack support frame, the heat generated by the electrochemical reaction of the stack can be carried out by the air convection of the ventilation openings, so that the stack is cooled by air convection. Therefore, the problem in the prior art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The shell of the fuel cell system provided by the embodiment of the present application is provided.

[0025] Figure 2A perspective view of a housing in a fuel cell system is provided.

[0026] Figure 3 A left view of a housing in a fuel cell system is provided.

[0027] Figure 4 A right view of a housing in a fuel cell system is provided.

[0028] Figure 5 A rear view of a housing in a fuel cell system is provided.

[0029] Figure 6 An internal structure view of a housing in a fuel cell system is provided.

[0030] Figure 7 A front view of an internal structure of a housing in a fuel cell system is provided.

[0031] In the above figures: 1 - housing; 11 - air vent; 12 - hydrogen sensor; 13 - handle; 14 - heat dissipation fan; 15 - heat dissipation hole; 16 - status display screen; 17 - sensor assembly; 18 - high-voltage output connector; 19 - low-voltage output connector; 110 - heat dissipation hole; 2 - stack; 21 - wind concentrator; 211 - first bolt; 212 - second bolt; 3 - stack support frame; 4 - hydrogen subsystem; 41 - hydrogen inlet; 42 - hydrogen outlet; 5 - voltage converter. DETAILED DESCRIPTION

[0032] The embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

[0033] The exemplary embodiments will be described in detail herein below with reference to the drawings.

[0034] In the description of the present application, it is also necessary to explain that, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or equipment. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0035] As described above, at present, the cooling flow channel is arranged in the bipolar plate, and then the heat is dissipated through the water in the cooling flow channel. However, due to the fact that the outdoor environment usually cannot provide enough water as a cooling liquid, this heat dissipation mode is usually difficult to apply.

[0036] Therefore, the present application provides a fuel cell system, which comprises a shell 1, an electric pile 2, an electric pile support frame 3 and a hydrogen sub-system 4, wherein the shell 1 is provided with an internal cavity, and the electric pile 2, the electric pile support frame 3 and the hydrogen sub-system 4 are arranged in the internal cavity of the shell 1.

[0037] As shown in Figure 1 and 2 is a schematic view of the shell 1, the side wall of the shell 1 is provided with a plurality of ventilation openings 11, which can ventilate to dissipate heat of the electric pile 2 in the internal cavity of the shell 1.

[0038] In actual application, the ventilation opening 11 can be a louver, of course, it can also be a through hole or other type of ventilation opening. It should be noted that in order to form the convection of air and improve the heat dissipation effect, the side wall of the shell 1 is provided with ventilation openings 11, and the opposite side wall of the side wall can also be provided with a plurality of ventilation openings 11, so as to form the convection of air through the ventilation openings on the two opposite side walls to improve the heat dissipation effect. The ventilation openings 11 on the opposite side wall can also be a louver, or a circular or other shaped through hole, etc., which is not specifically limited here.

[0039] In addition, the stack 2 is arranged on the stack support frame 3, so that the stack 2 is erected by the stack support frame 3, and the heat dissipation effect of the stack 2 is improved. In order to improve the space utilization, the hydrogen subsystem 4 can be arranged in the space below or the space on the side of the stack support frame 3. For example, the hydrogen subsystem 4 can be arranged below the stack support frame 3. Figure 7 As shown in FIG. 8, the hydrogen subsystem 4 is arranged in the space on the side of the stack support frame 3. In actual application, the hydrogen subsystem 4 can also be arranged below or on the side of the stack support frame 3.

[0040] In the embodiment of the present application, on the one hand, the stack 2 is erected by the stack support frame 3, so that the heat dissipation effect of the stack 2 is improved. On the other hand, the hydrogen subsystem 4 is arranged in the space below or the space on the side of the stack support frame 3, so that the space utilization is improved.

[0041] In order to make the stack 2 work normally, hydrogen must be supplied to the stack 2. Therefore, the hydrogen outlet of the hydrogen subsystem 4 is connected to the hydrogen inlet of the stack 2, so that the hydrogen subsystem 4 can supply hydrogen to the stack 2.

[0042] The fuel cell system provided in the present application comprises a shell 1, a stack 2, a stack support frame 3 and a hydrogen subsystem 4 arranged in the internal cavity of the shell 1. The hydrogen subsystem 4 is arranged in the space below or the space on the side of the stack support frame 3. The hydrogen outlet of the hydrogen subsystem 4 is connected to the hydrogen inlet of the stack 2. Since the side wall of the shell 1 is provided with a plurality of ventilation openings, and the stack 2 is arranged on the stack support frame 3, the heat generated by the stack 2 due to the electrochemical reaction can be taken out by the air convection of the ventilation openings, so that the stack 2 is cooled by air convection. Therefore, the fuel cell system can be cooled even if it is applied to a water-lacking field environment, and the problem in the prior art is solved.

[0043] It should be noted that in the present application, the stack 2 and the hydrogen subsystem 4 are arranged in the internal cavity of the shell 1. If there is hydrogen leakage, the hydrogen is easy to accumulate in the internal cavity of the shell 1, which causes safety risks. Therefore, in the embodiment of the present application, a hydrogen sensor 12 can be arranged in the internal cavity of the shell 1, so as to detect the concentration of hydrogen in the internal cavity of the shell 1. Considering that the density of hydrogen is lower than that of air, if there is hydrogen leakage, the leaked hydrogen is easy to gather at the top of the internal cavity of the shell 1. Therefore, in order to improve the detection effect, the hydrogen sensor 12 can be arranged on the top inner wall of the shell 1.

[0044] In practical application, in order to facilitate the carrying of the fuel cell system, a handle 13 can be arranged in the shell 1, wherein the handle 13 can be arranged on the top outer wall of the shell 1, so that when the fuel cell system needs to be carried, the handle 13 can be used for carrying.

[0045] It should be further pointed out that, as mentioned above, the stack 2 is erected by being arranged on the stack support frame 3, thereby improving the heat dissipation effect, and in practical application, a wind collecting cover 21 can be further arranged on the periphery of the stack 2, so that the convection air blowing to the stack 2 is collected by the wind collecting cover 21, thereby improving the convection effect of hydrogen and further improving the heat dissipation effect. The wind collecting cover 21 can be fixed to the peripheral frame of the stack 2 by first bolts 211 or fixed to the stack support frame 3 by second bolts 212, so as to be arranged on the periphery of the stack 2, and the stack 2 can also be fixed to the stack support frame 3 by the second bolts 212.

[0046] In addition, in order to reduce the overall weight and improve the weight energy density of the fuel cell, the stack support frame 3 can be made of a hollow square tube, and the stack support frame 3 can be fixed to the inner wall of the shell 1 by means such as welding or bolt connection.

[0047] When the fuel cell system outputs electric energy to the outside, the voltage usually needs to be regulated, so the fuel cell system provided by the embodiment of the application can further include a voltage converter 5, wherein the current transmission port of the voltage converter 5 is connected to the electrode of the stack, so that the voltage converter 5 can regulate the voltage output by the stack, such as increasing or decreasing the voltage. In practical application, the voltage converter 5 can be a DC / DC converter or a DC / AC converter. The DC / DC converter is used to convert direct current of one voltage into direct current of another voltage, and the DC / AC converter is used to convert direct current of one voltage into alternating current of another voltage.

[0048] In addition, in order to improve the space utilization, the voltage converter 5 can be arranged on the inner wall of the side wall (which can be referred to as the front wall) of the shell 1, such as being fixed to the inner wall of the front wall, so as to improve the space utilization by means of mounting.

[0049] Of course, the voltage converter 5 will also generate a certain amount of heat during operation, so a plurality of heat dissipation fans 14 can be arranged on the upper end of the voltage converter 5 side wall (i.e. the front wall) in the shell 1, and a heat dissipation hole 15 can be arranged on the lower end of the voltage converter side wall in the shell 1. In this way, when the voltage converter 5 is working, the heat dissipation fans 14 can work and form air convection through the heat dissipation hole 15 to dissipate heat from the voltage converter 5.

[0050] In addition, in order to facilitate timely observation of the current, voltage and other states of the fuel cell system, a state display screen 16 can also be arranged on the outer wall of the front wall, so that the current, voltage and other states of the fuel cell system are displayed through the state display screen 16.

[0051] In order to facilitate the control of the start and stop of the fuel cell system, the front wall can also be provided with a keyhole, so that the keyhole and the matched key serve as the start-stop switch of the fuel cell system. For example, the key can be inserted into the keyhole, and the fuel cell system can be started by twisting the key, and then external power supply is realized. Of course, the fuel cell system can also be stopped by twisting the key.

[0052] In order to facilitate the monitoring of the temperature and humidity of the fuel cell, a sensor assembly 17 can also be arranged in the shell 1, so as to facilitate the temperature monitoring of the sensor assembly 17. The position where the sensor assembly 17 is arranged can be opposite to the side wall of the voltage converter 5 (i.e. the front wall mentioned above). Here, the opposite side wall of the front wall can be referred to as the rear wall, that is, the sensor assembly 17 can be arranged on the rear wall. The sensor assembly 17 can be used for temperature and humidity detection. In actual application, the sensor assembly 17 can be composed of a temperature sensor and a humidity sensor, or can be a wet temperature sensor.

[0053] In addition, since the hydrogen subsystem 4 needs to input hydrogen and discharge water, the hydrogen inlet 41 and the hydrogen path drain port 42 of the hydrogen subsystem 4 can also be arranged on the front wall, so that hydrogen is input into the hydrogen subsystem 4 through the hydrogen inlet 41, and water is discharged through the hydrogen path drain port 42.

[0054] Of course, in order to facilitate the output of electric energy, a high-voltage output connector 18 and a low-voltage output connector 19 can also be further arranged on the rear wall. The edge of the low-voltage output connector 19 can be further provided with a heat dissipation hole 110, so that high-voltage current can be output through the high-voltage output connector 18, low-voltage current can be output through the low-voltage output connector 19, and heat dissipation can be realized through the heat dissipation hole 110.

[0055] Based on the fuel cell system provided by the embodiment of the present application, the embodiment of the present application further provides a power consumption equipment, which comprises the fuel cell system provided by the embodiment of the present application and utilizes the fuel cell system for power supply.

[0056] In actual application, the power consumption equipment can be a base station, a vehicle or other types of power consumption equipment in a field environment. Here, the specific type of the power consumption equipment is not specifically limited.

[0057] The utility model is not limited to the above-mentioned embodiment, for ordinary skilled person in the art, without departing from the principle of the utility model, still can make a number of improvements and refinements, these improvements and refinements also be regarded as the protection scope of the utility model. The content not being described in detail in the specification belongs to the prior art known to the person skilled in the art.

Claims

1. A fuel cell system, characterized in that, The fuel cell system comprises: a housing and a stack, a stack support frame and a hydrogen subsystem arranged in the internal cavity of the housing, wherein: the side wall of the housing is provided with a plurality of ventilation openings; the stack is arranged on the stack support frame; the hydrogen subsystem is arranged in the space below or on the side of the stack support frame; the hydrogen outlet of the hydrogen subsystem is connected to the hydrogen inlet of the stack.

2. The fuel cell system of claim 1, wherein The top inner wall of the housing is provided with a hydrogen sensor.

3. The fuel cell system of claim 1, wherein The periphery of the stack is provided with a wind collector.

4. The fuel cell system of claim 1, wherein The fuel cell system further comprises a voltage converter, wherein the current transmission port of the voltage converter is connected to the electrode of the stack; and, the voltage converter is arranged on the inner wall of the side wall of the housing.

5. The fuel cell system of claim 4, wherein In the housing, a plurality of cooling fans are arranged on the upper end of the side wall of the voltage converter; and, in the housing, a plurality of cooling holes are arranged on the lower end of the side wall of the voltage converter.

6. The fuel cell system of claim 4, wherein In the housing, the outer wall of the side wall of the voltage converter is provided with a state display screen.

7. The fuel cell system of claim 4, wherein In the housing, the opposite side wall of the side wall of the voltage converter is provided with a sensor assembly and the hydrogen inlet of the hydrogen subsystem.

8. The fuel cell system of claim 7, wherein The opposite side wall is also provided with a high-voltage output connector and a low-voltage output connector, wherein the edge of the low-voltage output connector is provided with a cooling hole.

9. The fuel cell system of claim 1, wherein The top outer wall of the housing is provided with a handle.

10. An electric device, characterized by The fuel cell system as claimed in any one of claims 1-9 is used for power supply. ​

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