Fuel cell pipeline system and fuel cell testing device

Abstract

The embodiment of the utility model relates to the technical field of fuel cell testing, in particular to a fuel cell pipeline system and a fuel cell testing device. The fuel cell pipeline system comprises a first gas supply pipeline, a first heat exchanger, a second gas supply pipeline, a second heat exchanger and an exhaust pipeline, the first gas supply pipeline is communicated with a first gas inlet of a galvanic pile, the first gas supply pipeline is used for introducing fuel electrode gas into the galvanic pile, and the first gas supply pipeline is communicated with the first heat exchanger; the second gas supply pipeline communicates with a second gas inlet of the galvanic pile, the second gas supply pipeline is used for introducing air electrode gas into the galvanic pile, the second gas supply pipeline communicates with a second heat exchanger, and the gas exhaust pipeline communicates with a gas exhaust opening of the galvanic pile and is used for exhausting high-temperature tail gas in the galvanic pile; the exhaust pipeline communicates with the first heat exchanger and the second heat exchanger at the same time. According to the fuel cell pipeline system provided by the embodiment of the invention, by arranging the heat exchanger, the utilization rate of heat is improved, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present specification relate to the technical field of fuel cell testing, and in particular to a fuel cell pipeline system and a fuel cell testing device. BACKGROUND

[0002] A solid oxide fuel cell testing device is mainly used for detecting the performance and quality of a solid oxide fuel cell. The solid oxide fuel cell testing device simulates various conditions of the solid oxide fuel cell in an actual working environment, and comprehensively tests and evaluates key performance indicators such as output power, efficiency, and stability of the solid oxide fuel cell. In the solid oxide fuel cell testing device, the gas entering the stack is usually heated by direct electric heating or combustion heating, and a cooling device needs to be provided to cool the high-temperature tail gas discharged from the stack, which not only increases the cost but also causes waste of heat.

[0003] Therefore, there is an urgent need for a fuel cell pipeline system and a fuel cell testing device to solve the above problems. CONTENT OF THE INVENTION

[0004] The purpose of the embodiments of the present specification is to provide a fuel cell pipeline system and a fuel cell testing device to improve the utilization rate of heat and reduce costs.

[0005] To achieve this purpose, the embodiments of the present specification adopt the following technical solutions:

[0006] A fuel cell pipeline system comprises:

[0007] a first gas supply pipeline and a first heat exchanger, the first gas supply pipeline being in communication with a first gas inlet of the stack, the first gas supply pipeline being used for supplying fuel electrode gas into the stack, and the first gas supply pipeline being in communication with the first heat exchanger;

[0008] a second gas supply pipeline and a second heat exchanger, the second gas supply pipeline being in communication with a second gas inlet of the stack, the second gas supply pipeline being used for supplying air electrode gas into the stack, and the second gas supply pipeline being in communication with the second heat exchanger; and

[0009] an exhaust pipeline, the exhaust pipeline being in communication with an exhaust port of the stack, the exhaust pipeline being used for discharging high-temperature tail gas in the stack, and the exhaust pipeline being in communication with the first heat exchanger and the second heat exchanger at the same time.

[0010] As an optional solution, the first gas supply pipeline comprises a second heating member, a first heat outlet of the first heat exchanger is in communication with an inlet of the second heating member, and an outlet of the second heating member is in communication with the first gas inlet of the stack; and / or

[0011] The second gas supply pipeline comprises a fourth heating member, a first heat exchange outlet of the second heat exchanger is in communication with an inlet of the fourth heating member, and an outlet of the fourth heating member is in communication with the second gas inlet of the stack.

[0012] As an option, the first gas supply pipeline comprises a first heating member, an outlet of the first heating member is in communication with a first heat exchange inlet of the first heat exchanger; and / or

[0013] The second gas supply pipeline comprises a third heating member, and an outlet of the third heating member is in communication with a first heat exchange inlet of the second heat exchanger.

[0014] As an option, the fuel cell pipeline system further comprises:

[0015] A heating furnace, the stack, the second heating member, and the fourth heating member are all accommodated in the heating furnace.

[0016] As an option, the second heating member is a first heating coil; and / or

[0017] The fourth heating member is a second heating coil.

[0018] As an option, the first heating coil is a ring-shaped heating coil or a square-shaped heating coil; and / or

[0019] The second heating coil is a ring-shaped heating coil or a square-shaped heating coil.

[0020] As an option, the fuel cell pipeline system further comprises a water cooling member, and the exhaust pipeline comprises:

[0021] A first exhaust branch, an inlet of the first exhaust branch is in communication with an exhaust outlet of the stack, an outlet of the first exhaust branch is in communication with a second heat exchange inlet of the first heat exchanger, and a second heat exchange outlet of the first heat exchanger is in communication with an inlet of the water cooling member; and

[0022] A second exhaust branch, an inlet of the second exhaust branch is in communication with the exhaust outlet of the stack, an outlet of the second exhaust branch is in communication with a second heat exchange inlet of the second heat exchanger, and a second heat exchange outlet of the second heat exchanger is in communication with the inlet of the water cooling member.

[0023] As an option, a first flow meter is in communication with the first gas supply pipeline; and / or

[0024] A second flow meter is in communication with the second gas supply pipeline.

[0025] As an option, a first filter valve is arranged on the first gas supply pipeline; and / or

[0026] The second gas supply pipeline is provided with a second filter valve.

[0027] A fuel cell testing device includes a stack and a fuel cell pipeline system as described above, the stack being in communication with the fuel cell pipeline system.

[0028] The embodiment of the present specification provides a fuel cell pipeline system, which includes a first gas supply pipeline, a first heat exchanger, a second gas supply pipeline, a second heat exchanger and an exhaust pipeline, the first gas supply pipeline being in communication with a first gas inlet of a stack, the first gas supply pipeline being used for feeding fuel electrode gas into the stack, and the first gas supply pipeline being in communication with the first heat exchanger, the second gas supply pipeline being in communication with a second gas inlet of the stack, the second gas supply pipeline being used for feeding air electrode gas into the stack, and the second gas supply pipeline being in communication with the second heat exchanger, the exhaust pipeline being in communication with an exhaust outlet of the stack, the exhaust pipeline being used for discharging high-temperature tail gas in the stack, and the exhaust pipeline being in communication with the first heat exchanger and the second heat exchanger at the same time. The fuel cell pipeline system provided by the embodiment of the present specification, by arranging the first heat exchanger and the second heat exchanger, makes the high-temperature tail gas in the stack discharged by the exhaust pipeline exchange heat with the fuel electrode gas fed by the first gas supply pipeline through the first heat exchanger, and exchange heat with the air electrode gas fed by the second gas supply pipeline through the second heat exchanger, not only realizes heating of the fuel electrode gas and the air electrode gas, but also realizes cooling treatment of the high-temperature tail gas, improves the utilization rate of heat, and reduces the cost.

[0029] The embodiment of the present specification also provides a fuel cell testing device, which improves the utilization rate of heat and reduces the cost by applying the fuel cell pipeline system. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a first structural schematic diagram of a fuel cell testing device provided by the embodiment of the present specification;

[0031] Figure 2 is a second structural schematic diagram of a fuel cell testing device provided by the embodiment of the present specification;

[0032] Figure 3 is a structural block diagram of a fuel cell testing device provided by the embodiment of the present specification.

[0033] In the drawings:

[0034] 1, stack; 2, first gas supply pipeline; 21, first heating element; 22, second heating element; 23, first flow meter; 24, first filter valve; 25, first regulating valve; 3, first heat exchanger; 4, second gas supply pipeline; 41, third heating element; 42, fourth heating element; 43, second flow meter; 44, second filter valve; 45, second regulating valve; 5, second heat exchanger; 6, exhaust pipeline; 61, first exhaust branch; 62, second exhaust branch; 7, heating furnace; 8, fuel electrode gas supply tank; 9, air electrode gas supply tank; 10, water cooling element. DETAILED DESCRIPTION

[0035] In order to make the technical problems solved by the embodiments of the present specification, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present specification will be further described below in combination with the drawings and through specific embodiments.

[0036] In the description of the embodiments of the present specification, unless explicitly defined and limited otherwise, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present specification can be understood according to the specific circumstances.

[0037] In the embodiments of the present specification, unless explicitly defined and limited otherwise, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0038] In the description of the embodiments, the terms "up", "down", "left", "right" and other orientation or position relationships are based on the orientation or position relationships shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present specification. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0039] In a solid oxide fuel cell test device, the gas input into the stack is usually heated directly by electric heating or combustion heating, and a cooling device needs to be provided to cool the high-temperature exhaust gas discharged from the stack, which not only increases the cost but also causes waste of heat.

[0040] To solve the above problems, as shown in Figure 1 The embodiment provides a fuel cell pipeline system, which comprises a first gas supply pipeline 2, a first heat exchanger 3, a second gas supply pipeline 4, a second heat exchanger 5 and an exhaust pipeline 6, wherein the first gas supply pipeline 2 is communicated with a first gas inlet of a stack 1, the first gas supply pipeline 2 is used for inputting fuel electrode gas into the stack 1, and the first gas supply pipeline 2 is communicated with the first heat exchanger 3; the second gas supply pipeline 4 is communicated with a second gas inlet of the stack 1, the second gas supply pipeline 4 is used for inputting air electrode gas into the stack 1, and the second gas supply pipeline 4 is communicated with the second heat exchanger 5; and the exhaust pipeline 6 is communicated with an exhaust outlet of the stack 1, the exhaust pipeline 6 is used for discharging high-temperature exhaust gas in the stack 1, and the exhaust pipeline 6 is communicated with the first heat exchanger 3 and the second heat exchanger 5. The fuel cell pipeline system provided by the embodiment is characterized in that the first heat exchanger 3 and the second heat exchanger 5 are arranged, so that the high-temperature exhaust gas in the stack 1 discharged by the exhaust pipeline 6 is subjected to heat exchange with the fuel electrode gas delivered by the first gas supply pipeline 2 through the first heat exchanger 3 and subjected to heat exchange with the air electrode gas delivered by the second gas supply pipeline 4 through the second heat exchanger 5, thereby realizing heating of the fuel electrode gas and the air electrode gas and realizing cooling of the high-temperature exhaust gas, improving the utilization rate of heat and reducing the cost.

[0041] Optionally, the fuel cell pipeline system provided by the embodiment can be directly applied to a fuel cell in a production environment, fuel electrode gas is input into the stack 1 through the first gas supply pipeline 2, and air electrode gas is input into the stack 1 through the second gas supply pipeline 4, so that the stack 1 can directly convert chemical energy into electric energy.

[0042] As shown in Figure 1 The embodiment further provides a fuel cell test device, which comprises the stack 1 and the fuel cell pipeline system, and the stack 1 is communicated with the fuel cell pipeline system. The fuel cell test device provided by the embodiment improves the utilization rate of heat and reduces the cost by applying the fuel cell pipeline system.

[0043] It should be noted that in the present embodiment, the power generation work can be carried out in the stack 1, and the electrolysis hydrogen production work can also be carried out in the stack 1. It should be noted that in the present embodiment, the heat exchange principles of the first heat exchanger 3 and the second heat exchanger 5 mainly rely on the functions of temperature rising and temperature dropping of two types of substances with different temperatures through heat exchange. Since the specific structure and heat exchange principle of the first heat exchanger 3 and the second heat exchanger 5 belong to the prior art, they will not be described here.

[0044] Optionally, as shown in Figure 2 The first gas supply pipeline 2 includes a first heating member 21 and a second heating member 22. The outlet of the first heating member 21 is in communication with the first heat exchange inlet of the first heat exchanger 3. The first heat exchange outlet of the first heat exchanger 3 is in communication with the inlet of the second heating member 22. The outlet of the second heating member 22 is in communication with the first gas inlet of the stack 1. The structure design of the above-mentioned first gas supply pipeline 2 makes the fuel electrode gas transported in the first gas supply pipeline 2 first pass through the primary preheating of the first heating member 21, then enter the first heat exchanger 3 for further heating, and finally enter the second heating member 22 for further heating before entering the stack 1, thereby realizing the three-stage heating treatment of the fuel electrode gas, avoiding the problem of high power consumption caused by the traditional direct one-stage heating form, reducing the energy consumption, and also reducing the temperature difference between each heating member and the inlet and outlet of the first heat exchanger 3, thereby alleviating the stress and thermal deformation problems of the pipeline and equipment caused by the excessively high temperature difference, reducing the loss of the pipeline and equipment, and improving the safety and service life of the pipeline and equipment. In addition, by making the fuel electrode gas first pass through the primary preheating of the first heating member 21, then pass through the heat exchange heating of the first heat exchanger 3, and finally pass through the high-temperature heating of the second heating member 22, not only the heat in the first heat exchanger 3 can be fully utilized, but also the heating efficiency of the fuel electrode gas is improved, and the cost is reduced. It should be noted that in other embodiments, the first heating member 21 can also not be provided, and the fuel electrode gas transported in the first gas supply pipeline 2 can directly enter the first heat exchanger 3 for heating, and finally enter the second heating member 22 for further heating before entering the stack 1.

[0045] For example, after the primary preheating of the fuel electrode gas transported in the first gas supply pipeline 2 by the first heating member 21, the temperature of the fuel electrode gas discharged from the outlet of the first heating member 21 can reach 200°C, then after further heating in the first heat exchanger 3, the temperature of the fuel electrode gas discharged from the first heat exchange outlet of the first heat exchanger 3 can reach 500°C, thereby completing the temperature rising conversion from 200°C to 500°C, and finally after further heating in the second heating member 22, the temperature of the fuel electrode gas discharged from the outlet of the second heating member 22 can reach 750°C, thereby completing the temperature rising process from 500°C to 750°C, and ensuring that the temperature of the fuel electrode gas entering the stack 1 reaches 750°C.

[0046] Optionally, in the embodiment, the first heating member 21 is an electric heating member, and specifically, the first heating member 21 can be a resistance wire. The resistance wire has a good heating effect and a simple structure.

[0047] Optionally, in the embodiment, the first gas supply pipeline 2 is communicated with a first flow meter 23. The first flow meter 23 is arranged to facilitate monitoring of the flow of the fuel electrode gas conveyed in the first gas supply pipeline 2.

[0048] Optionally, in the embodiment, the first gas supply pipeline 2 is provided with a first filter valve 24. The first filter valve 24 is arranged to filter impurities in the first gas supply pipeline 2 and ensure the purity of the fuel electrode gas conveyed.

[0049] Optionally, in the embodiment, the first gas supply pipeline 2 is provided with a first adjusting valve 25. The first adjusting valve 25 is arranged to adjust the on-off of the first gas supply pipeline 2 and the flow of the fuel electrode gas conveyed by the first gas supply pipeline 2, so as to meet the testing requirements of different fuel electrode gas conveying flows. Specifically, the first adjusting valve 25 can be a flow adjusting valve.

[0050] In the embodiment, as shown in Figure 2 and Figure 3 , the fuel cell pipeline system further comprises a fuel electrode gas supply tank 8. The fuel electrode gas supply tank 8 is used to store fuel electrode gas, and the fuel electrode gas supply tank 8 is communicated with the first gas supply pipeline 2. The above arrangement enables the fuel electrode gas in the fuel electrode gas supply tank 8 to enter the first heat exchanger 3 after sequentially passing through the first filter valve 24, the first adjusting valve 25, the first flow meter 23 and the first heating member 21 in the first gas supply pipeline 2, and then enter the stack 1 after passing through the second heating member 22 in the first gas supply pipeline 2.

[0051] Optionally, as shown in Figure 2 and Figure 3As shown, the second gas supply pipeline 4 comprises a third heating member 41 and a fourth heating member 42. The outlet of the third heating member 41 is in communication with the first heat exchange inlet of the second heat exchanger 5. The first heat exchange outlet of the second heat exchanger 5 is in communication with the inlet of the fourth heating member 42. The outlet of the fourth heating member 42 is in communication with the second gas inlet of the stack 1. The structure of the second gas supply pipeline 4 is designed in such a way that the air electrode gas delivered in the second gas supply pipeline 4 is first preheated by the third heating member 41, then enters the second heat exchanger 5 for further heating, and finally enters the fourth heating member 42 for further heating before entering the stack 1. In this way, the air electrode gas is subjected to three-stage heating, avoiding the high power consumption problem caused by the traditional direct one-stage heating. The energy consumption is reduced, and the temperature difference at the inlet and outlet of each heating member and the second heat exchanger 5 is also reduced, thereby relieving the stress and thermal deformation problem of the pipeline and equipment caused by the high temperature difference, reducing the loss of the pipeline and equipment, and improving the safety and service life of the pipeline and equipment. In addition, by preheating the air electrode gas by the third heating member 41 first, then heating by the second heat exchanger 5, and finally high-temperature heating by the fourth heating member 42, the heat in the second heat exchanger 5 can be fully utilized, and the heating efficiency of the air electrode gas is improved, and the cost is reduced. It should be noted that in other embodiments, the third heating member 41 can be omitted, and the air electrode gas delivered in the second gas supply pipeline 4 can be directly heated by the second heat exchanger 5, and finally heated by the fourth heating member 42 before entering the stack 1.

[0052] For example, the temperature of the air electrode gas delivered in the second gas supply pipeline 4 can reach 200℃ after the preliminary preheating by the third heating member 41. Then, the air electrode gas is further heated in the second heat exchanger 5, and the temperature of the air electrode gas delivered from the first heat exchange outlet of the second heat exchanger 5 can reach 500℃, thereby completing the temperature rise from 200℃ to 500℃. Finally, the air electrode gas is further heated in the fourth heating member 42, and the temperature of the air electrode gas delivered from the outlet of the fourth heating member 42 can reach 750℃, thereby completing the temperature rise from 500℃ to 750℃, and ensuring that the temperature of the air electrode gas entering the stack 1 reaches 750℃.

[0053] Optionally, in the present embodiment, the third heating member 41 is an electric heating member, specifically, the third heating member 41 can be a resistance wire. The resistance wire has good heating effect and simple structure.

[0054] Optionally, in the present embodiment, the second gas supply pipeline 4 is provided with a second flow meter 43. The second flow meter 43 is configured to monitor the flow of the air electrode gas delivered in the second gas supply pipeline 4.

[0055] Optionally, in the embodiment, the second gas supply pipeline 4 is provided with a second filter valve 44. By arranging the second filter valve 44, impurities in the second gas supply pipeline 4 can be filtered, and the purity of the air electrode gas delivered can be ensured.

[0056] Optionally, in the embodiment, the second gas supply pipeline 4 is provided with a second adjusting valve 45. By arranging the second adjusting valve 45, the on-off of the second gas supply pipeline 4 and the flow of the air electrode gas delivered by the second gas supply pipeline 4 can be adjusted, so as to meet the testing requirements of different delivery flow of the air electrode gas. Specifically, the second adjusting valve 45 can be a flow adjusting valve.

[0057] In the embodiment, as shown in Figure 2 and Figure 3 , the fuel cell pipeline system further comprises an air electrode gas supply tank 9, the air electrode gas supply tank 9 is used for storing air electrode gas, and the air electrode gas supply tank 9 is in communication with the second gas supply pipeline 4. The above arrangement makes the air electrode gas in the air electrode gas supply tank 9 pass through the second filter valve 44, the second adjusting valve 45, the second flow meter 43 and the third heating member 41 in the second gas supply pipeline 4 in sequence, and then enter the second heat exchanger 5, and then pass through the fourth heating member 42 in the second gas supply pipeline 4 and enter the stack 1.

[0058] In the embodiment, as shown in Figure 2 , the fuel cell pipeline system further comprises a heating furnace 7, and the stack 1, the second heating member 22 and the fourth heating member 42 are accommodated in the heating furnace 7. By arranging the heating furnace 7, the second heating member 22, the fourth heating member 42 and the stack 1 are provided with heating and heat preservation functions, so as to ensure the normal reaction of the stack 1. Specifically, the high-temperature environment in the heating furnace 7 can heat and preserve the second heating member 22 and the fourth heating member 42, so that the second heating member 22 heats the fuel electrode gas flowing inside, and the fourth heating member 42 heats the air electrode gas flowing inside. Since the specific structure and heating principle of the heating furnace 7 belong to the prior art, they will not be described here.

[0059] Optionally, in the present embodiment, the second heating member 22 is a first heating coil. By designing the second heating member 22 in the form of a first heating coil, the extension path of the second heating member 22 in the heating furnace 7 is effectively lengthened, so that the fuel electrode gas is slowly and gradually heated in the second heating member 22 during the flow of the fuel electrode gas in the second heating member 22, effectively relieving the stress and thermal deformation of the pipeline, increasing the safety and service life of the pipeline. In addition, by designing the second heating member 22 in the form of a first heating coil, the structure of the second heating member 22 is more compact, so that the extension length of the second heating member 22 can be further lengthened in the limited space of the heating furnace 7. Optionally, in the present embodiment, the first heating coil can be a ring-shaped heating coil or a square-shaped heating coil, and the present embodiment does not limit the specific form of the first heating coil.

[0060] Optionally, in the present embodiment, the fourth heating member 42 is a second heating coil. By designing the fourth heating member 42 in the form of a second heating coil, the extension path of the fourth heating member 42 in the heating furnace 7 is effectively lengthened, so that the air electrode gas is slowly and gradually heated in the fourth heating member 42 during the flow of the air electrode gas in the fourth heating member 42, effectively relieving the stress and thermal deformation of the pipeline, increasing the safety and service life of the pipeline. In addition, by designing the fourth heating member 42 in the form of a second heating coil, the structure of the fourth heating member 42 is more compact, so that the extension length of the fourth heating member 42 can be further lengthened in the limited space of the heating furnace 7. Optionally, in the present embodiment, the second heating coil can be a ring-shaped heating coil or a square-shaped heating coil, and the present embodiment does not limit the specific form of the second heating coil.

[0061] In the present embodiment, as Figure 2 and Figure 3As shown, the fuel cell pipeline system further comprises a water cooling device 10, the exhaust pipeline 6 comprises a first exhaust branch 61 and a second exhaust branch 62, wherein the inlet of the first exhaust branch 61 is communicated with the exhaust port of the stack 1, the outlet of the first exhaust branch 61 is communicated with the second heat exchange inlet of the first heat exchanger 3, the second heat exchange outlet of the first heat exchanger 3 is communicated with the inlet of the water cooling device 10, the inlet of the second exhaust branch 62 is communicated with the exhaust port of the stack 1, the outlet of the second exhaust branch 62 is communicated with the second heat exchange inlet of the second heat exchanger 5, and the second heat exchange outlet of the second heat exchanger 5 is communicated with the inlet of the water cooling device 10. The above arrangement makes the high-temperature exhaust gas discharged from the exhaust port of the stack 1 enter the first heat exchanger 3 through the first exhaust branch 61 to exchange heat with the fuel electrode gas and then enter the water cooling device 10 for further cooling, and the high-temperature exhaust gas discharged from the exhaust port of the stack 1 enters the second heat exchanger 5 through the second exhaust branch 62 to exchange heat with the air electrode gas and then enters the water cooling device 10 for further cooling, so as to realize two-stage cooling operation of the high-temperature exhaust gas, meet the cooling demand of the high-temperature exhaust gas, and avoid waste of heat in the high-temperature exhaust gas.

[0062] It should be noted that in the embodiment, the high-temperature exhaust gas discharged from the exhaust port of the stack 1 can be cooled from 750℃ to below 50℃ through two-stage cooling operation, so as to avoid the influence of the high-temperature exhaust gas on the atmospheric environment. Alternatively, the water cooling device 10 cools the exchanged exhaust gas through water cooling, and the specific structure and working principle of the water cooling device 10 belong to the prior art, which will not be described here.

[0063] Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the embodiments of the present application, and are not intended to limit the embodiments of the present application. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the embodiments of the present application shall be included in the protection scope of the claims of the embodiments of the present application.

Claims

1. A fuel cell plumbing system, characterized by, The fuel cell pipeline system comprises: a first gas supply pipeline (2) and a first heat exchanger (3), the first gas supply pipeline (2) is communicated with a first gas inlet of the electric pile (1), the first gas supply pipeline (2) is used for introducing fuel electrode gas into the electric pile (1), and the first gas supply pipeline (2) is communicated with the first heat exchanger (3); a second gas supply pipeline (4) and a second heat exchanger (5), the second gas supply pipeline (4) is communicated with a second gas inlet of the electric pile (1), the second gas supply pipeline (4) is used for introducing air electrode gas into the electric pile (1), and the second gas supply pipeline (4) is communicated with the second heat exchanger (5); and an exhaust pipeline (6) communicated with an exhaust port of the electric pile (1), the exhaust pipeline (6) is used for discharging high-temperature tail gas in the electric pile (1), and the exhaust pipeline (6) is communicated with the first heat exchanger (3) and the second heat exchanger (5) at the same time.

2. The fuel cell plumbing system of claim 1, wherein, The first gas supply pipeline (2) comprises a second heating element (22), a first heat exchanger outlet of the first heat exchanger (3) is communicated with an inlet of the second heating element (22), and an outlet of the second heating element (22) is communicated with the first gas inlet of the electric pile (1); and / or The second gas supply pipeline (4) comprises a fourth heating element (42), a first heat exchanger outlet of the second heat exchanger (5) is communicated with an inlet of the fourth heating element (42), and an outlet of the fourth heating element (42) is communicated with the second gas inlet of the electric pile (1).

3. The fuel cell plumbing system of claim 1, wherein, The first gas supply pipeline (2) comprises a first heating element (21), and an outlet of the first heating element (21) is communicated with a first heat exchanger inlet of the first heat exchanger (3); and / or The second gas supply pipeline (4) comprises a third heating element (41), and an outlet of the third heating element (41) is communicated with a first heat exchanger inlet of the second heat exchanger (5).

4. The fuel cell plumbing system of claim 2, wherein, The fuel cell pipeline system further comprises: a heating furnace (7), the electric pile (1), the second heating element (22) and the fourth heating element (42) are all accommodated in the heating furnace (7).

5. The fuel cell plumbing system of claim 4, wherein, The second heating element (22) is a first heating coil; and / or The fourth heating element (42) is a second heating coil.

6. The fuel cell plumbing system of claim 5, wherein, The first heating coil is a ring-shaped heating coil or a square-shaped heating coil; and / or The second heating coil is a ring-shaped heating coil or a square-shaped heating coil.

7. The fuel cell plumbing system according to any one of claims 1 to 6, wherein The fuel cell pipeline system further comprises a water cooling element (10), and the exhaust pipeline (6) comprises: a first exhaust branch (61), an inlet of the first exhaust branch (61) is communicated with the exhaust port of the electric pile (1), an outlet of the first exhaust branch (61) is communicated with a second heat exchanger inlet of the first heat exchanger (3), and a second heat exchanger outlet of the first heat exchanger (3) is communicated with an inlet of the water cooling element (10); and a second exhaust branch (62), an inlet of the second exhaust branch (62) is communicated with the second heat exchanger outlet of the first heat exchanger (3), an outlet of the second exhaust branch (62) is communicated with a second heat exchanger inlet of the second heat exchanger (5), and a second heat exchanger outlet of the second heat exchanger (5) is communicated with an inlet of the water cooling element (10). A second exhaust branch (62) has an inlet communicating with an exhaust port of the stack (1), an outlet communicating with a second heat exchange inlet of the second heat exchanger (5), and a second heat exchange outlet communicating with an inlet of the water cooling member (10).

8. The fuel cell plumbing system of any of claims 1-6, wherein, The first gas supply pipeline (2) is provided with a first flow meter (23); and / or The second gas supply pipeline (4) is provided with a second flow meter (43).

9. The fuel cell plumbing system according to any one of claims 1 to 6, wherein The first gas supply pipeline (2) is provided with a first filter valve (24); and / or The second gas supply pipeline (4) is provided with a second filter valve (44).

10. A fuel cell testing apparatus characterized by comprising: A fuel cell system comprising a stack (1) and a fuel cell pipeline system according to any one of claims 1-9, the stack (1) communicating with the fuel cell pipeline system.

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