Fuel cell gas supply system and vehicle

Abstract

The utility model relates to a fuel cell gas supply system and a vehicle. The fuel cell gas supply system comprises an electric pile, a gas inlet loop and a gas exhaust loop, the air inlet loop is communicated with an air inlet of the electric pile and is used for supplying air into the electric pile; the exhaust loop comprises a turbine, a generator and a water-gas separator; a gas inlet of the water-gas separator is communicated with a gas outlet of the electric pile, and a gas outlet of the water-gas separator is communicated with a gas inlet of the turbine, so that gas flowing out of the water-gas separator pushes blades of the turbine to rotate; the turbine is connected with the generator, and blades of the turbine can drive the generator to generate electricity when rotating. According to the utility model, after being discharged from the electric pile, the waste gas is not directly discharged into the atmosphere, but is used for driving the blades of the turbine to rotate so as to drive the generator to generate electricity, so that the waste can be reduced, and the energy utilization rate can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile batteries, and in particular relates to a fuel cell gas supply system and a vehicle. Background Art

[0002] The main function of the fuel cell gas supply system is to provide air with a certain pressure to the stack. The oxygen in the air receives electrons from the anode at the cathode of the stack and generates water through a reduction reaction. The generated water can be discharged from the stack as exhaust gas together with other gases in the air in the form of water vapor.

[0003] However, in the related technology, the exhaust gas is directly discharged into the atmosphere after being discharged from the fuel cell stack, and the utilization rate is low. Utility Model Content

[0004] The utility model provides a fuel cell gas supply system and a vehicle, aiming to improve the waste gas utilization rate of the fuel cell.

[0005] In order to solve the above problems, on the one hand, an embodiment of the utility model provides a fuel cell gas supply system, including a fuel cell stack, an intake circuit and an exhaust circuit; the intake circuit is connected to the air inlet of the fuel cell stack, and is used to supply gas to the fuel cell stack; the exhaust circuit includes a turbine, a generator and a water-gas separator; the air inlet of the water-gas separator is connected to the air outlet of the fuel cell stack, and the air outlet of the water-gas separator is connected to the air inlet of the turbine, so that the gas flowing out of the water-gas separator can drive the blades of the turbine to rotate; the turbine is connected to the generator, and the rotation of the blades of the turbine can drive the generator to generate electricity.

[0006] Optionally, the fuel cell gas supply system also includes a humidifier; the humidifier has a first air inlet, a second air inlet, a first air outlet and a second air outlet, wherein the first air inlet is connected to the air outlet of the air intake circuit, the first air outlet is connected to the air inlet of the fuel cell stack, the second air inlet is connected to the air outlet of the fuel cell stack, and the second air outlet is connected to the air inlet of the water-gas separator; the gas in the air intake circuit enters the humidifier through the first air inlet and enters the fuel cell stack from the first air outlet; the gas flowing out of the air outlet of the fuel cell stack enters the humidifier from the second air inlet and enters the water-gas separator from the second air outlet; the gas entering the humidifier from the second air inlet is used to humidify the gas entering the humidifier from the first air inlet.

[0007] Optionally, the air intake circuit includes an air compressor and an intercooler, the air outlet of the air compressor is connected to the air inlet of the intercooler, and the air outlet of the intercooler is connected to the air inlet of the fuel cell stack.

[0008] Optionally, the intake circuit includes an air compressor, and the air outlet of the air compressor is connected to the air inlet of the fuel cell stack; the fuel cell gas supply system also includes a bypass branch, and the bypass branch includes a bypass valve, the air inlet of the bypass valve is connected to the air outlet of the air compressor, and the air outlet of the bypass valve is connected to the exhaust circuit; the bypass valve is used to control the gas flow rate entering the exhaust circuit from the intake circuit.

[0009] Optionally, the air outlet of the bypass valve is connected between the air inlet of the turbine and the air outlet of the fuel cell stack.

[0010] Optionally, the air outlet of the bypass valve is connected between the air inlet of the water-gas separator and the air outlet of the fuel cell stack.

[0011] Optionally, the intake circuit includes an air compressor and an intercooler, the air outlet of the air compressor is connected to the air inlet of the intercooler, and the air outlet of the intercooler is connected to the air inlet of the fuel cell stack; the air inlet of the bypass valve is connected between the air inlet of the intercooler and the air outlet of the air compressor.

[0012] Optionally, the intake circuit includes an air compressor, and the air outlet of the air compressor is connected to the air inlet of the fuel cell stack; the fuel cell gas supply system also includes an air cooling branch, the air inlet end of the air cooling branch is connected to the exhaust circuit, and the air outlet end of the air cooling branch is connected to the inlet of the cooling channel of the air compressor.

[0013] Optionally, the air inlet of the air cooling branch is connected between the air outlet of the water-gas separator and the air inlet of the turbine.

[0014] Optionally, the fuel cell gas supply system also includes a shell and a purge branch, and the fuel cell stack is installed in the shell; the air inlet of the purge branch is connected to the exhaust circuit; the shell has an air inlet and an air outlet, and the air outlet of the purge branch is connected to the air inlet of the shell.

[0015] Optionally, the air inlet of the purge branch is connected between the air outlet of the water-gas separator and the air inlet of the turbine.

[0016] Optionally, the intake circuit includes an air compressor, and the air outlet of the air compressor is connected to the air inlet of the fuel cell stack; the fuel cell gas supply system also includes an air cooling branch, the air inlet end of the air cooling branch is connected to the exhaust circuit, and the air outlet end of the air cooling branch is connected to the inlet of the cooling channel of the air compressor; the fuel cell gas supply system also includes a casing and a purge branch, and the fuel cell stack is installed in the casing; the air inlet of the purge branch is connected to the exhaust circuit; the casing has an air inlet and an air outlet, and the air outlet of the purge branch is connected to the air inlet of the casing; the exhaust circuit also includes an exhaust pipe, and the outlet of the cooling channel of the turbine, the air outlet of the casing and the air outlet of the turbine are all connected to the exhaust pipe.

[0017] In order to solve the above problems, on the other hand, an embodiment of the present invention provides a vehicle, comprising any one of the fuel cell gas supply systems described above.

[0018] In the fuel cell gas supply system and vehicle provided by the embodiment of the utility model, after the exhaust gas is discharged from the gas outlet of the fuel cell stack, it is not directly discharged into the atmosphere, but the exhaust gas is used to drive the blades of the turbine to rotate, so as to drive the generator to generate electricity, which can reduce waste and improve energy utilization. In addition, the exhaust gas introduced into the turbine is dried by the water-gas separator, which can effectively prevent the blades and other parts of the turbine from being corroded by the moisture in the exhaust gas, thereby improving the service life of the turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a fuel cell gas supply system module provided in one embodiment of the utility model.

[0020] Reference numerals:

[0021] 100. Fuel cell gas supply system; 10. Fuel cell stack; 20. Intake circuit; 30. Exhaust circuit; 40. Humidifier; 50. Bypass branch; 60. Air cooling branch; 70. Purge branch; 80. Inlet shut-off valve; 90. Outlet shut-off valve; 1. Turbine; 2. Generator; 3. Water-gas separator; 4. Air compressor; 5. Intercooler; 6. Bypass valve. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] like Figure 1As shown, in one embodiment, the fuel cell gas supply system 100 includes a fuel cell stack 10, an intake circuit 20 and an exhaust circuit 30; the intake circuit 20 is connected to the air inlet of the fuel cell stack 10, and is used to supply gas to the fuel cell stack 10; the exhaust circuit 30 includes a turbine 1, a generator 2 and a water-gas separator 3; the air inlet of the water-gas separator 3 is connected to the air outlet of the fuel cell stack 10, and the air outlet of the water-gas separator 3 is connected to the air inlet of the turbine 1, so that the gas flowing out of the water-gas separator 3 drives the blades of the turbine 1 to rotate; the turbine 1 is connected to the generator 2, and when the blades of the turbine 1 rotate, they can drive the generator 2 to generate electricity.

[0024] In this embodiment, the air intake circuit 20 mainly supplies air to the stack 10. The air is passed into the stack 10 from the air intake circuit 20 to perform an oxidation reaction. After the exhaust gas is discharged from the air outlet of the stack 10, it is not directly discharged into the atmosphere, but the exhaust gas is used to drive the blades of the turbine 1 to rotate, so as to drive the generator 2 to generate electricity, which can reduce waste and improve energy utilization. In addition, the exhaust gas passed into the turbine 1 is dried by the water-gas separator 3, which can effectively prevent the blades of the turbine 1 and other parts from being corroded by the moisture in the exhaust gas, thereby improving the service life of the turbine 1.

[0025] The fuel cell may be a hydrogen fuel cell, that is, air and hydrogen react in the fuel cell stack 10. The electricity generated by the generator 2 may be stored in a corresponding storage battery so as to be used when needed.

[0026] It should be noted that the turbine 1, the generator 2 and the water-gas separator 3 can all be existing designs, and this embodiment does not impose too many restrictions.

[0027] In addition, it should be understood that in the fuel cell gas supply system 100, the way to achieve gas path communication between two parts can be to directly connect the two parts to achieve gas path communication, or to achieve gas path communication between the two parts through relevant pipelines.

[0028] like Figure 1 As shown, in one embodiment, the intake circuit 20 includes an air compressor 4 and an intercooler 5, the air outlet of the air compressor 4 is connected to the air inlet of the intercooler 5, and the air outlet of the intercooler 5 is connected to the air inlet of the fuel cell stack 10. The air compressor 4 is used to compress air and make the air flow to the fuel cell stack 10, and the intercooler 5 is used to cool the gas flowing out of the air compressor 4. In this embodiment, the air outlet of the air compressor 4 is connected to the air inlet of the fuel cell stack 10 through the intercooler 5, wherein the air outlet of the intercooler 5 can be regarded as the air outlet of the intake circuit 20.

[0029] It should be noted that the air compressor 4 and the intercooler 5 can both be existing designs, and this embodiment does not impose too many restrictions.

[0030] like Figure 1As shown, in one embodiment, the exhaust circuit 30 further includes an exhaust pipe, the gas outlet of the turbine 1 is connected to the exhaust pipe, and the gas in the exhaust circuit 30 is discharged into the atmosphere through the exhaust pipe.

[0031] like Figure 1 As shown, in one embodiment, the fuel cell gas supply system 100 also includes a humidifier 40; the humidifier 40 has a first air inlet, a second air inlet, a first air outlet and a second air outlet, wherein the first air inlet is connected to the first air outlet, and the second air inlet is connected to the second air outlet; after assembly, the first air inlet is connected to the air outlet of the intake circuit 20, the first air outlet is connected to the air inlet of the fuel cell stack 10, the second air inlet is connected to the air outlet of the fuel cell stack 10, and the second air outlet is connected to the air inlet of the water vapor separator 3.

[0032] During operation, the gas in the intake circuit 20 enters the humidifier 40 through the first air inlet and enters the fuel cell stack 10 from the first air outlet; the gas flowing out from the air outlet of the fuel cell stack 10 can enter the humidifier 40 from the second air inlet and enter the water-gas separator 3 from the second air outlet; the gas entering the humidifier 40 from the second air inlet is used to humidify the gas entering the humidifier 40 from the first air inlet.

[0033] The humidifier 40 may be of existing design, and this embodiment does not impose too many restrictions.

[0034] In actual working scenarios, when the air intake circuit 20 has an air compressor 4, the air compressor 4 is prone to surge, which is specifically manifested in large pressure fluctuations and obvious noise at the air outlet of the air compressor 4, which can easily cause damage to the air compressor 4.

[0035] To solve this problem, Figure 1 As shown, in one embodiment, the fuel cell gas supply system 100 also includes a bypass branch 50, the bypass branch 50 includes a bypass valve 6, the air inlet of the bypass valve 6 is connected to the air outlet of the air compressor 4, and the air outlet of the bypass valve 6 is connected to the exhaust circuit 30; the bypass valve 6 is used to control the gas flow from the intake circuit 20 into the exhaust circuit 30.

[0036] During operation, when the air pressure at the air outlet of the air compressor 4 is too high, the bypass valve 6 can be adjusted to increase the air flow from the intake circuit 20 to the exhaust circuit 30, thereby reducing the pressure at the air outlet of the air compressor 4; when the air pressure at the air outlet of the air compressor 4 is too low, the bypass valve 6 can be adjusted to reduce the air flow from the intake circuit 20 to the exhaust circuit 30, thereby increasing the pressure at the air outlet of the air compressor 4. That is, by adjusting the bypass valve 6, it is beneficial to keep the air pressure at the air outlet of the air compressor 4 stable, thereby avoiding the air compressor 4 from surging.

[0037] The bypass valve 6 may be a flow control valve in the prior art, and when in operation, it may be adjusted by a corresponding control device in a device using the gas supply system 100. The device using the gas supply system 100 may be a vehicle, etc. In addition, a corresponding pressure detector may be provided in the fuel cell gas supply system 100 so as to detect the gas pressure at the gas outlet of the air compressor 4 through the pressure detector.

[0038] like Figure 1 As shown, the outlet of the bypass valve 6 is connected between the air inlet of the turbine 1 and the air outlet of the fuel cell stack 10 , which can increase the pressure of the gas entering the turbine 1 and improve the power generation energy of the generator 2 .

[0039] Further, such as Figure 1 As shown, in one embodiment, the air outlet of the bypass valve 6 is connected between the air inlet of the moisture separator 3 and the air outlet of the fuel cell stack 10. That is, the air directly discharged from the intake circuit 20 into the exhaust circuit 30 also needs to be dried by the moisture separator 3 before it can flow to the turbine 1. This can increase the pressure of the gas entering the turbine 1 and prevent the moisture in the air from corroding the turbine 1.

[0040] like Figure 1 As shown, in the embodiment where the intake circuit 20 includes both the air compressor 4 and the intercooler 5, the intake port of the bypass valve 6 is connected between the intake port of the intercooler 5 and the outlet port of the air compressor 4. In this way, the pressure of the gas entering the exhaust circuit 30 through the bypass branch 50 can be higher, thereby further increasing the pressure of the gas entering the turbine 1.

[0041] When the air intake circuit 20 includes the air compressor 4, the air compressor 4 generates heat during operation, especially the motor and bearings of the air compressor 4 generate heat significantly, so it needs to be cooled. Specifically, the air compressor 4 has a corresponding cooling channel, and the air compressor 4 can be cooled by introducing a corresponding cooling medium into the cooling channel.

[0042] like Figure 1 As shown, in one embodiment, the fuel cell gas supply system 100 also includes an air cooling branch 60, the air inlet end of the air cooling branch 60 is connected to the exhaust circuit 30, and the air outlet end of the air cooling branch 60 is connected to the inlet of the cooling channel of the air compressor 4. Among them, the temperature of the exhaust gas is lower than the temperature of the area where the air compressor 4 needs to be cooled (such as the temperature of the area where the motor and the bearing are located), so the air compressor 4 can be cooled by the exhaust gas as a cooling medium, so that there is no need to introduce other cooling media into the cooling channel of the air compressor 4, and the air compressor 4 can be cooled conveniently. Moreover, the exhaust gas discharged from the fuel cell stack 10 after the reaction is used to cool the air compressor 4, and no additional flow demand is generated, that is, the air compressor 4 does not need to provide additional gas to cool the air compressor 4, thereby reducing the power consumption of the air compressor 4.

[0043] like Figure 1 As shown, in one embodiment, the air inlet of the air cooling branch 60 is connected between the air outlet of the water-gas separator 3 and the air inlet of the turbine 1, so as to prevent the moisture in the exhaust gas from corroding the cooling channel.

[0044] In addition, the outlet of the cooling channel may be connected to the exhaust pipe, so that the gas entering from the cooling channel inlet can be discharged from the cooling channel outlet and discharged into the atmosphere from the exhaust pipe. The air cooling branch 60 may include an air pipe, one end of which is the air inlet of the air cooling branch 60, and the other end of which is the air outlet of the air cooling branch 60.

[0045] exist Figure 1 In the figure, one of the two lines indicated by the air-cooling branch 60 represents an air inlet path and the other represents an air outlet path, wherein the arrows of the two lines represent other flow directions.

[0046] In one embodiment, the fuel cell gas supply system 100 further includes a housing, and the fuel cell stack 10 is installed in the housing, wherein corresponding avoidance windows are provided on the housing so that the intake circuit 20 and the exhaust circuit 30 can be connected to the fuel cell stack 10 in the housing.

[0047] In actual operation, hydrogen or other fuel in the fuel stack 10 may leak into the housing. When the concentration of hydrogen or other fuel in the housing is too high, it may easily cause danger. Therefore, it is necessary to eliminate this danger.

[0048] In this regard, Figure 1 As shown, in one embodiment, the fuel cell gas supply system 100 further includes a purge branch 70, the air inlet of the purge branch 70 is connected to the exhaust circuit 30; the housing has an air inlet and an air outlet, and the air outlet of the purge branch 70 is connected to the air inlet of the housing. During operation, the exhaust gas in the exhaust circuit 30 can enter the housing from the air inlet, and can drive the hydrogen and other fuels in the housing to be discharged from the housing through the air outlet. Thereby reducing the concentration of hydrogen and other fuels in the housing, and improving the safety performance of the fuel cell gas supply system 100.

[0049] Moreover, the exhaust gas discharged from the fuel cell stack 10 after the reaction is used to purge the outer shell to reduce the concentration of fuel such as hydrogen in the outer shell. No additional flow demand is generated, that is, the air compressor 4 is not required to provide additional gas to purge the outer shell, thereby reducing the power consumption of the air compressor 4.

[0050] In addition, the gas outlet of the housing may be connected to an exhaust pipe so that the gas in the housing can be discharged into the atmosphere through the exhaust pipe.

[0051] like Figure 1As shown, in one embodiment, the air inlet of the purge branch 70 is connected between the air outlet of the water-gas separator 3 and the air inlet of the turbine 1, so that the moisture in the exhaust gas can be prevented from corroding the cooling channel. In addition, the purge branch 70 can include an air pipe, one end of which is the air inlet of the purge branch 70, and the other end of which is the air outlet of the purge branch 70.

[0052] exist Figure 1 In the figure, one of the two lines indicated by the purge branch 70 represents an air inlet path and the other represents an air outlet path, wherein the arrows of the two lines represent other flow directions.

[0053] like Figure 1 As shown, in one embodiment, the fuel cell gas supply system 100 further includes a stack entry shutoff valve 80, which is disposed between the air outlet of the intake circuit 20 and the air inlet of the fuel cell stack 10. The stack entry shutoff valve 80 can control the on-off between the intake circuit 20 and the air inlet of the fuel cell stack 10. The stack entry shutoff valve 80 can be an existing design, and this embodiment will not be described in detail.

[0054] like Figure 1 As shown, in one embodiment, the fuel cell gas supply system 100 further includes a stack shutoff valve 90, which is disposed between the gas outlet of the fuel cell stack 10 and the gas inlet of the water-gas separator 3. The shutoff valve can control the on-off between the gas outlet of the fuel cell stack 10 and the gas inlet of the water-gas separator 3. The stack shutoff valve 90 can be an existing design, and this embodiment will not be described in detail here.

[0055] It should be understood that the above-mentioned related designs may also be replaced by other methods, such as:

[0056] In other embodiments, the air intake circuit 20 may also include the air compressor 4 but not the intercooler 5 . In this case, the air outlet of the air compressor 4 may be regarded as the air outlet of the air intake circuit 20 .

[0057] In other embodiments, the air outlet of the bypass valve 6 may also be connected between the air outlet of the water-gas separator 3 and the air inlet of the turbine 1; or, the air outlet of the bypass valve 6 may also be connected to the air outlet of the turbine 1, that is, the air outlet of the bypass valve 6 may be directly connected to the exhaust pipe. At this time, the gas entering the exhaust circuit 30 from the bypass branch 50 is not used to drive the turbine 1.

[0058] In other embodiments, the air inlet of the air cooling branch 60 may also be connected between the air inlet of the water-gas separator and the air outlet of the fuel cell stack 10 .

[0059] In other embodiments, the air inlet of the purge branch 70 may also be connected between the air inlet of the water-gas separator and the air outlet of the fuel cell stack 10 .

[0060] An embodiment of the present invention further provides a vehicle, which comprises the fuel cell gas supply system 100 as described in any one of the above embodiments.

[0061] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell gas supply system, characterized in that: Including battery stack, intake circuit and exhaust circuit; The air intake circuit is in communication with the air intake port of the fuel cell stack and is used to supply air into the fuel cell stack; The exhaust circuit includes a turbine, a generator and a water-gas separator; The air inlet of the water-gas separator is communicated with the air outlet of the fuel cell stack, and the air outlet of the water-gas separator is communicated with the air inlet of the turbine, so that the blades of the turbine are driven to rotate by the gas flowing out of the water-gas separator; The turbine is connected to the generator, and the turbine blades can drive the generator to generate electricity when rotating.

2. The fuel cell gas supply system according to claim 1, characterized in that: The fuel cell gas supply system also includes a humidifier; The humidifier has a first air inlet, a second air inlet, a first air outlet and a second air outlet, wherein the first air inlet is communicated with the air outlet of the air inlet circuit, the first air outlet is communicated with the air inlet of the fuel cell stack, the second air inlet is communicated with the air outlet of the fuel cell stack, and the second air outlet is communicated with the air inlet of the water-gas separator; The gas in the air intake circuit enters the humidifier through the first air inlet and enters the fuel cell stack from the first air outlet; The gas flowing out of the gas outlet of the fuel cell stack enters the humidifier from the second gas inlet, and enters the water-gas separator from the second gas outlet; The gas entering the humidifier from the second gas inlet is used to humidify the gas entering the humidifier from the first gas inlet.

3. The fuel cell gas supply system according to claim 1, characterized in that: The air intake circuit includes an air compressor and an intercooler, the air outlet of the air compressor is connected to the air inlet of the intercooler, and the air outlet of the intercooler is connected to the air inlet of the fuel cell stack.

4. The fuel cell gas supply system according to claim 1, characterized in that: The air intake circuit includes an air compressor, and the air outlet of the air compressor is connected to the air inlet of the fuel cell stack; The fuel cell gas supply system also includes a bypass branch, which includes a bypass valve. The air inlet of the bypass valve is connected to the air outlet of the air compressor, and the air outlet of the bypass valve is connected to the exhaust circuit; the bypass valve is used to control the gas flow from the intake circuit into the exhaust circuit.

5. The fuel cell gas supply system according to claim 4, characterized in that: The air outlet of the bypass valve is connected between the air inlet of the turbine and the air outlet of the fuel cell stack.

6. The fuel cell gas supply system according to claim 5, characterized in that: The air outlet of the bypass valve is connected between the air inlet of the water-gas separator and the air outlet of the fuel cell stack.

7. The fuel cell gas supply system according to claim 4, characterized in that: The air intake circuit includes an air compressor and an intercooler, the air outlet of the air compressor is connected to the air inlet of the intercooler, and the air outlet of the intercooler is connected to the air inlet of the fuel cell stack; The air inlet of the bypass valve is connected between the air inlet of the intercooler and the air outlet of the air compressor.

8. The fuel cell gas supply system according to claim 1, characterized in that: The air intake circuit includes an air compressor, and the air outlet of the air compressor is connected to the air inlet of the fuel cell stack; The fuel cell gas supply system further includes an air cooling branch, an air inlet end of the air cooling branch is connected to the exhaust circuit, and an air outlet end of the air cooling branch is connected to the inlet of the cooling channel of the air compressor.

9. The fuel cell gas supply system according to claim 8, characterized in that: The air inlet of the air cooling branch is connected between the air outlet of the water-gas separator and the air inlet of the turbine.

10. The fuel cell gas supply system according to claim 1, characterized in that: The fuel cell gas supply system further comprises a housing and a purge branch, and the fuel cell stack is installed in the housing; The air inlet of the purge branch is in communication with the exhaust circuit; The shell has an air inlet and an air outlet, and the air outlet of the purge branch is communicated with the air inlet of the shell.

11. The fuel cell gas supply system according to claim 10, characterized in that: The air inlet of the purge branch is connected between the air outlet of the water-gas separator and the air inlet of the turbine.

12. The fuel cell gas supply system according to claim 1, characterized in that: The air intake circuit includes an air compressor, and the air outlet of the air compressor is connected to the air inlet of the fuel cell stack; The fuel cell gas supply system further comprises an air cooling branch, an air inlet end of the air cooling branch is connected to the exhaust circuit, and an air outlet end of the air cooling branch is connected to the inlet of the cooling channel of the air compressor; The fuel cell gas supply system further comprises a housing and a purge branch, the fuel cell stack is installed in the housing; the air inlet of the purge branch is communicated with the exhaust circuit; the housing has an air inlet and an air outlet, the air outlet of the purge branch is communicated with the air inlet of the housing; The exhaust circuit further includes an exhaust pipe, and the outlet of the cooling channel of the turbine, the air outlet of the housing, and the air outlet of the turbine are all in communication with the exhaust pipe.

13. A vehicle, characterized in that: A fuel cell gas supply system comprising any one of claims 1-12.

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