Device and method for quickly starting fuel cell

Abstract

The invention relates to a fuel cell rapid starting device and a starting method.The device comprises an active hydrogen elimination device, a hydrogen side treatment assembly and an oxygen side treatment assembly, the hydrogen side treatment assembly comprises a first buffer tank, a hydrogen pump, a second buffer tank and a mass flow controller, the gas inlet end of the first buffer tank is communicated with hydrogen side waste gas of an electric pile, and the gas outlet end of the second buffer tank is communicated with the mass flow controller; the first buffer tank is provided with a first gas outlet end and a second gas outlet end, and the first gas outlet end, the hydrogen pump, the second buffer tank, the mass flow controller and the first gas inlet end of the active hydrogen elimination device are communicated in sequence; the oxygen side treatment assembly comprises an oxygen supply pipe, an air blower and an oxygen discharge pipe; the electric pile can adopt high-flow purging, all hydrogen-side waste gas can be completely received through the arranged hydrogen-side treatment assembly, and meanwhile, the flow of the conveyed hydrogen-side waste gas can be ensured to be matched with the treatment capacity of the active hydrogen elimination device through the arranged mass flow controller, so that the active hydrogen elimination device is in a high-efficiency operation state.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to a device and method for rapid start-up of a fuel cell. Background Technology

[0002] Hydrogen-oxygen proton exchange membrane fuel cells (HECFCs) typically use pure hydrogen and pure oxygen as reactants and operate with both the anode and cathode outlets sealed. During operation, HECFCs generate a large amount of water that remains in the membrane electrode assembly, gas diffusion layer, and bipolar plates. When the cell restarts, this excess water can affect performance and cause start-up failure. Therefore, purging is a widely accepted and common start-up method. Purging primarily involves using a large amount of gas to expel the water from the cell, preventing it from clogging the porous layers and channels, and establishing a stable gas environment, which plays a crucial role in restoring the performance of the HECFC.

[0003] In an open environment, fuel cells are typically purged using nitrogen or other purging gases, which are then directly discharged into the environment without any waste gas treatment process. In a closed environment, however, hydrogen-oxygen fuel cells typically use pure hydrogen and pure oxygen to purge the cathode and anode respectively, and the resulting waste gas is usually eliminated using active or passive hydrogen removal methods.

[0004] Typically, during battery startup, the purge gas flow rate is high, generating a significant amount of waste gas that is difficult for the hydrogen removal device to eliminate quickly. Therefore, a slow purge method with a low flow rate is generally used for startup; however, this results in a longer battery startup time. Summary of the Invention

[0005] In view of this, it is necessary to provide a device and method for rapid start-up of fuel cells to solve the problem of long start-up time of existing fuel cells due to the limitation of exhaust gas treatment efficiency.

[0006] On one hand, the present invention provides a device for rapid start-up of a fuel cell, used to treat hydrogen-side and oxygen-side exhaust gases purged from the fuel cell stack, including a dynamic hydrogen eliminator, a hydrogen-side treatment component, and an oxygen-side treatment component. The dynamic hydrogen eliminator has a first inlet end and a second inlet end. The hydrogen-side treatment component includes a first buffer tank, a hydrogen pump, a second buffer tank, and a mass flow controller. The inlet end of the first buffer tank is connected to the hydrogen-side exhaust gas outlet of the fuel cell stack. The first buffer tank has an alternately opening first outlet end and a second outlet end. The first outlet end, the hydrogen pump, the second buffer tank, the mass flow controller, and the first inlet end of the dynamic hydrogen eliminator are sequentially connected, and the second outlet end is connected to the first inlet end of the dynamic hydrogen eliminator. The oxygen-side treatment component includes an oxygen supply pipe, a blower, and an oxygen exhaust pipe. The outlet end of the oxygen supply pipe is connected to the second inlet end of the dynamic hydrogen eliminator via the blower, and the inlet end of the oxygen exhaust pipe is connected to the oxygen-side exhaust gas outlet of the fuel cell stack.

[0007] Furthermore, the hydrogen-side treatment assembly also includes a delivery pipeline, which includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The first connecting pipe connects the hydrogen-side exhaust outlet of the fuel cell stack to the inlet of the first buffer tank. The second connecting pipe connects the first outlet of the first buffer tank to the inlet of the fourth connecting pipe. The third connecting pipe connects the second outlet of the first buffer tank to the inlet of the fourth connecting pipe. The outlet of the fourth connecting pipe is connected to the first inlet of the active hydrogen eliminator. The hydrogen pump, the second buffer tank, and the mass flow controller are all mounted on the second connecting pipe.

[0008] Furthermore, the hydrogen-side processing assembly also includes a first check valve installed on the first connecting pipe, a second check valve and a first solenoid valve installed on the second connecting pipe, a third check valve and a second solenoid valve installed on the third connecting pipe, and a fourth check valve installed on the fourth connecting pipe.

[0009] Furthermore, the hydrogen-side processing assembly also includes a first pressure sensor mounted on the first buffer tank and a second pressure sensor mounted on the second buffer tank; The first pressure sensor is electrically connected to the hydrogen pump, and the first pressure sensor is configured to turn on the hydrogen pump when the pressure value it detects reaches a preset value. The second pressure sensor is electrically connected to the mass flow controller, and the mass flow controller is configured to activate when the pressure value detected by the second pressure sensor reaches a preset value.

[0010] Furthermore, the device also includes a temperature sensor installed inside the active hydrogen eliminator, the temperature sensor being electrically connected to the mass flow controller, the mass flow controller operating according to the temperature inside the active hydrogen eliminator.

[0011] Furthermore, the catalyst used in the active hydrogen eliminator is made of Pt alumina, palladium alumina, or rhodium alumina.

[0012] Furthermore, the oxygen-side treatment assembly also includes a reflux pipe, the inlet end of which is connected to the oxygen exhaust pipe, and the outlet end of which is connected to the oxygen supply pipe.

[0013] Furthermore, the oxygen-side treatment assembly also includes a fifth check valve and a third solenoid valve installed on the oxygen supply pipe, and a sixth check valve and a fourth solenoid valve installed on the oxygen exhaust pipe.

[0014] Furthermore, the oxygen-side processing assembly also includes an oxygen concentration sensor installed on the oxygen supply pipe, wherein the oxygen concentration sensor is electrically connected to the blower and is used to control the blower operation based on the detected oxygen concentration.

[0015] On the other hand, the present invention provides a method for rapid start-up of a fuel cell, applicable to the apparatus for rapid start-up of a fuel cell as described above, comprising the following steps: Step S10: Before purging the fuel cell stack, turn on the blower and adjust it to the preset speed, and monitor the oxygen concentration in the sealed chamber to ensure it is within the normal range. Step S20: Start the fuel cell stack purging. Open the first outlet of the first buffer tank and close the second outlet. Simultaneously start the hydrogen pump until the pressure of the second buffer tank reaches the preset value. Then, start the mass flow controller to introduce hydrogen into the active hydrogen eliminator at the maximum limit. Step S30: Monitor the temperature of the active hydrogen eliminator in real time until the temperature rises to the limit value; Step S40: After the fuel cell stack is purged, the first outlet of the first buffer tank is closed and the second outlet is opened, and the fuel cell stack enters the running state, thus completing the startup.

[0016] Compared to existing technologies, during fuel cell stack startup, the first air inlet is opened and the second air inlet is closed. The fuel cell stack purges its hydrogen-side exhaust gas into the first and second buffer tanks for storage. The mass flow controller, based on the processing capacity of the active hydrogen eliminator, delivers the hydrogen-side exhaust gas from the second buffer tank to the active hydrogen eliminator. The fuel cell stack discharges its oxygen-side exhaust gas through the oxygen exhaust pipe. Simultaneously, the oxygen supply pipe delivers external oxygen to the active hydrogen eliminator via a blower. As the temperature inside the active hydrogen eliminator increases, its processing capacity gradually increases, and the flow rate of the hydrogen-side exhaust gas delivered by the mass flow controller gradually increases until it reaches the maximum processing capacity of the active hydrogen eliminator. The aforementioned fuel cell stack can employ high-flow purging. The hydrogen-side processing components can completely receive all hydrogen-side exhaust gas. At the same time, the mass flow controller ensures that the flow rate of the delivered hydrogen-side exhaust gas matches the processing capacity of the active hydrogen eliminator, enabling the active hydrogen eliminator to operate at high efficiency and achieving rapid fuel cell startup. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the fuel cell rapid start-up device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the fuel cell fast start-up method provided in an embodiment of the present invention; Figure 3 This is a flowchart illustrating the rapid start-up method for fuel cells provided in an embodiment of the present invention. Detailed Implementation

[0018] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0019] like Figure 1 As shown, in one aspect, an embodiment of the present invention provides a device for rapid start-up of a fuel cell, used to treat hydrogen-side exhaust gas and oxygen-side exhaust gas purged from the fuel cell stack 100, including a dynamic hydrogen eliminator 200, a hydrogen-side treatment component 300, and an oxygen-side treatment component 400. The dynamic hydrogen eliminator 200 has a first inlet end and a second inlet end; the hydrogen-side treatment component 300 includes a first buffer tank 310, a hydrogen pump 320, a second buffer tank 330, and a mass flow controller 340. The inlet end of the first buffer tank 310 is connected to the hydrogen-side exhaust gas of the fuel cell stack 100, and the first buffer tank 310 has... The device has an alternately opening first and second outlet. The first outlet, hydrogen pump 320, second buffer tank 330, mass flow controller 340, and first inlet of active hydrogen eliminator 200 are connected in sequence. The second outlet is connected to the first inlet of active hydrogen eliminator 200. The oxygen-side treatment assembly 400 includes an oxygen supply pipe 410, a blower 420, and an oxygen exhaust pipe 430. The outlet of the oxygen supply pipe 410 is connected to the second inlet of active hydrogen eliminator 200 via the blower 420. The inlet of the oxygen exhaust pipe 430 is connected to the oxygen-side exhaust gas of the fuel cell stack 100.

[0020] During implementation, when the fuel cell stack 100 starts up, the first air inlet is opened and the second air inlet is closed. The fuel cell stack 100 purges its hydrogen-side exhaust gas into the first buffer tank 310 and the second buffer tank 330 for storage. The mass flow controller 340, based on the processing capacity of the active hydrogen eliminator 200, delivers the hydrogen-side exhaust gas from the second buffer tank 330 to the active hydrogen eliminator 200. The fuel cell stack 100 discharges its oxygen-side exhaust gas through the oxygen exhaust pipe 430. Simultaneously, the oxygen supply pipe 410 delivers external oxygen to the active hydrogen eliminator 200 through the blower 420. As the temperature inside the reactor increases, its processing capacity gradually increases. The flow rate of hydrogen-side exhaust gas delivered by the mass flow controller 340 gradually increases until it reaches the maximum processing capacity of the active hydrogen purifier 200. The aforementioned fuel cell stack 100 can be purged with a large flow rate. The hydrogen-side processing component 300 can completely receive all hydrogen-side exhaust gas. At the same time, the mass flow controller 340 can ensure that the flow rate of the delivered hydrogen-side exhaust gas is matched with the processing capacity of the active hydrogen purifier 200, so that the active hydrogen purifier 200 is in a high-efficiency operating state, realizing the rapid start-up of the fuel cell.

[0021] The active hydrogen eliminator 200 in this embodiment is used to eliminate hydrogen-side exhaust gas and has a first inlet end and a second inlet end.

[0022] In one embodiment, the designed hydrogen removal capacity of the active hydrogen remover 200 is the maximum tail discharge capacity of the fuel cell stack 100 under operating conditions.

[0023] The hydrogen-side treatment component 300 in this embodiment includes a first buffer tank 310, a hydrogen pump 320, a second buffer tank 330, and a mass flow controller 340. The inlet end of the first buffer tank 310 is connected to the hydrogen-side exhaust gas of the fuel cell stack 100. The first buffer tank 310 has an alternately opening first outlet end and a second outlet end. The first outlet end, the hydrogen pump 320, the second buffer tank 330, the mass flow controller 340, and the first inlet end of the active hydrogen eliminator 200 are connected in sequence. The second outlet end is connected to the first inlet end of the active hydrogen eliminator 200.

[0024] In one embodiment, the first buffer tank 310 has a water separation function, using methods such as cyclone, gravity settling, baffle or adsorption to separate the steam and water in the hydrogen-side waste gas.

[0025] In one embodiment, the second buffer tank 330 is a pressure-resistant storage tank, and its hydrogen storage capacity is the same as the hydrogen capacity used for purging the fuel cell stack 100.

[0026] In one embodiment, the ratio of hydrogen to oxygen concentration in the active hydrogen eliminator 200 is controlled by the set value of the mass flow controller 340 and the rotation speed of the blower 420, so that the hydrogen concentration is kept below the lower explosive limit and the temperature is rapidly increased by catalytic combustion.

[0027] In one embodiment, the hydrogen-side treatment assembly 300 further includes a delivery pipeline 350, which includes a first connecting pipe 351, a second connecting pipe 352, a third connecting pipe 353, and a fourth connecting pipe 354. The first connecting pipe 351 connects the hydrogen-side exhaust gas of the fuel cell stack 100 to the inlet of the first buffer tank 310. The second connecting pipe 352 connects the first outlet of the first buffer tank 310 to the inlet of the fourth connecting pipe 354. The third connecting pipe 353 connects the second outlet of the first buffer tank 310 to the inlet of the fourth connecting pipe 354. The outlet of the fourth connecting pipe 354 is connected to the first inlet of the active hydrogen eliminator 200. The hydrogen pump 320, the second buffer tank 330, and the mass flow controller 340 are all mounted on the second connecting pipe 352.

[0028] The hydrogen-side processing assembly 300 further includes a first check valve A1 installed on the first connecting pipe 351, a second check valve A2 and a first solenoid valve B1 installed on the second connecting pipe 352, a third check valve A3 and a second solenoid valve B2 installed on the third connecting pipe 353, and a fourth check valve A4 installed on the fourth connecting pipe 354.

[0029] The hydrogen-side processing assembly 300 also includes a first pressure sensor P1 installed on the first buffer tank 310 and a second pressure sensor P2 installed on the second buffer tank 330.

[0030] The first pressure sensor P1 is electrically connected to the hydrogen pump 320. The first pressure sensor P1 is configured to turn on the hydrogen pump 320 when the pressure value it detects reaches a preset value.

[0031] In one embodiment, a second pressure sensor P2 is electrically connected to a mass flow controller 340, and the second pressure sensor P2 is configured to activate the mass flow controller 340 when the pressure value it detects reaches a preset value.

[0032] A pressure reducing valve D is installed on the second connecting pipe 352 at the position between the second buffer tank 330 and the mass flow controller 340, and a flame arrester E is installed on the fourth connecting pipe 354.

[0033] In one embodiment, the device further includes a temperature sensor T installed within the active hydrogen eliminator 200, the temperature sensor T being electrically connected to a mass flow controller 340, the mass flow controller 340 operating according to the temperature within the active hydrogen eliminator 200.

[0034] When the temperature reaches the upper limit of the preset value, the set value of the mass flow controller 340 can be reduced to slow down the heating of the hydrogen elimination reactor, and the excess gas can be eliminated with the tail gas when the fuel cell stack 100 is in operation.

[0035] In one embodiment, the catalyst in the active hydrogen eliminator 200 is made of Pt alumina, palladium alumina, or rhodium alumina.

[0036] The oxygen-side treatment assembly 400 in this embodiment includes an oxygen supply pipe 410, a blower 420, and an oxygen exhaust pipe 430. The outlet end of the oxygen supply pipe 410 is connected to the second inlet end of the active hydrogen eliminator 200 via the blower 420, and the inlet end of the oxygen exhaust pipe 430 is connected to the oxygen-side exhaust gas of the fuel cell stack 100.

[0037] In one embodiment, the oxygen-side treatment assembly 400 further includes a return pipe 440, the inlet end of which is connected to the oxygen exhaust pipe 430, and the outlet end of which is connected to the oxygen supply pipe 410.

[0038] The oxygen-side treatment assembly 400 also includes a fifth check valve A5 and a third solenoid valve B3 installed on the oxygen supply pipe 410, and a sixth check valve A6 and a fourth solenoid valve B4 installed on the oxygen exhaust pipe 430.

[0039] In one embodiment, the oxygen-side processing assembly 400 further includes an oxygen concentration sensor C mounted on the oxygen supply pipe 410, wherein the oxygen concentration sensor C is electrically connected to the blower 420 and is used to control the operation of the blower 420 according to the detected oxygen concentration.

[0040] Among them, the oxygen concentration in the sealed chamber is monitored in real time by oxygen concentration sensor C in order to revise the set value of mass flow controller 340.

[0041] On the other hand, such as Figure 2 As shown, this embodiment of the invention provides a method for rapid start-up of a fuel cell, applicable to the aforementioned apparatus for rapid start-up of a fuel cell, comprising the following steps: Step S10: Before purging the fuel cell stack, turn on the blower and adjust it to the preset speed, and monitor the oxygen concentration in the sealed chamber to ensure it is within the normal range. Step S20: Start the fuel cell stack purging. Open the first outlet of the first buffer tank and close the second outlet. Simultaneously start the hydrogen pump until the pressure of the second buffer tank reaches the preset value. Then, start the mass flow controller to introduce hydrogen into the active hydrogen eliminator at the maximum limit. Step S30: Monitor the temperature of the active hydrogen eliminator in real time until the temperature rises to the limit value; Step S40: After the fuel cell stack is purged, the first outlet of the first buffer tank is closed and the second outlet is opened, and the fuel cell stack enters the running state, thus completing the startup.

[0042] In steps S10-S30, during the startup process of the fuel cell stack 100, the pressure of the first buffer tank 310 needs to be monitored at all times to ensure continuous purging of the fuel cell stack 100. When the pressure of the first buffer tank 310 reaches the preset value, the first solenoid valve B1 and the hydrogen pump 320 are started, and the second solenoid valve B2 is closed. At the same time, the pressure of the second buffer tank 330 is monitored at all times, and a large amount of hydrogen is supplied to the active hydrogen eliminator 200 through the proportional valve, so that the active hydrogen eliminator 200 heats up rapidly and reaches the preset hydrogen elimination temperature.

[0043] In step S40, after the fuel cell stack 100 is started, the first solenoid valve B1 and the second solenoid valve B2 are closed.

[0044] The rapid start-up method of this invention fully utilizes the start-up characteristics of the fuel cell stack 100, resulting in short start-up time, low exhaust gas emissions, high hydrogen removal efficiency, and good safety. Specifically: Before purging, open the first solenoid valve B1, close the second solenoid valve B2, open the third solenoid valve B3, and close the fourth solenoid valve B4. Turn on the blower 420 and adjust it to the preset speed. Monitor the oxygen concentration sensor C reading in the sealed chamber to ensure it is within the normal range. Start the purging of fuel cell stack 100, and simultaneously turn on the hydrogen pump 320 until the temperature of the second pressure sensor P2 on the second buffer tank 330 reaches the preset value. Turn on the mass flow controller 340 to introduce hydrogen into the hydrogen elimination reactor at the maximum limit. Monitor the temperature sensor T in real time until the temperature rises to the limit. After the purging of fuel cell stack 100 is completed, close the first solenoid valve B1, open the second solenoid valve B2, close the third solenoid valve B3, and open the fourth solenoid valve B4 to enter the operating state of fuel cell stack 100. Startup complete.

[0045] Example: like Figure 3 As shown, this embodiment of the invention provides a device for rapid start-up of a fuel cell. Based on the purging rate of the fuel cell stack 100, the first buffer tank 310 is designed with a volume of 20L and a design pressure of 0.15MPa; the second buffer tank 330 has a volume of 30L and a design pressure of 1MPa. The active hydrogen eliminator 200 uses Pt alumina microspheres as a catalyst, with a maximum hydrogen elimination rate of 10SL / min and a suitable reaction temperature of 100℃-200℃. Taking a certain type of hydrogen-oxygen fuel cell for a closed environment as an example, the hydrogen exhaust rate at rated power is 10SL / min, and the hydrogen and oxygen flow rates during purging are 150SL / min, with a purging time of 2 minutes. The significant effects of this invention are further explained below in conjunction with its structure and technical principles.

[0046] First, before purging, open the first solenoid valve B1 (ON), close the second solenoid valve B2 (OFF), open the third solenoid valve B3, and close the fourth solenoid valve B4. Turn on the blower 420 and adjust it to the preset speed. At this time, the air volume is 200SL / min. Monitor the oxygen concentration sensor C reading in the sealed chamber. If the oxygen concentration is higher than the preset value, increase the speed of the blower 420. If the oxygen concentration is lower than the preset value, decrease the speed of the blower 420.

[0047] The fuel cell stack 100 is purged. The purging hydrogen first enters the first buffer tank 310. When the first pressure sensor P1 reaches the preset value (state M1, hydrogen pump 320 is not turned on if it is below the preset value, state M2, hydrogen pump 320 is turned on if it is above the preset value), the hydrogen pump 320 is turned on until the second pressure sensor P2 reaches the preset value. Then the mass flow controller 340 is turned on to control the hydrogen flow rate of 10SL / min into the active hydrogen eliminator 200. The temperature sensor T is monitored in real time until the temperature rises to 80°C. Then, the mass flow controller 340 is adjusted to control the hydrogen flow rate to 5SL / min into the active hydrogen elimination reactor. If the temperature exceeds 200°C, the mass flow controller 340 is turned off (state M5, if the temperature is higher than the preset value, the mass flow controller 340 is adjusted to reduce the flow rate; state M6, if the temperature is lower than the preset value, the mass flow controller 340 is adjusted to increase the flow rate). After the fuel cell stack 100 is purged, the first solenoid valve B1 on the hydrogen side is closed, the second solenoid valve B2 is opened, the third solenoid valve B3 is closed, and the fourth solenoid valve B4 is opened, thus entering the fuel cell stack 100 operating state and the startup is complete. After the fuel cell stack 100 is started, if the hydrogen tail discharge is 1 SL / min, adjust the mass flow controller 340 to control the hydrogen flow rate to 9 SL / min. If the hydrogen tail discharge is 2 SL / min, adjust the mass flow controller 340 to control the hydrogen flow rate to 8 SL / min, and so on, always keeping the hydrogen removal capacity of the active hydrogen remover 200 at the upper limit.

[0048] Compared with existing technologies: 1) Short start-up time: This invention utilizes the purge gas of the fuel cell stack 100 to heat the hydrogen elimination reactor, enabling the hydrogen elimination reactor to quickly reach the optimal hydrogen elimination temperature, saving the reactor waiting time to heat up, and enabling the system to start up quickly. 2) Good safety: The hydrogen and oxygen of the 100-purge stack react directly with the help of a catalyst, decomposing into two gas-solid reactions without producing open flames. The purge hydrogen is completely consumed and does not need to be discharged into a closed environment, which increases the safety of the system.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for rapid start-up of a fuel cell, used to treat hydrogen-side exhaust gas and oxygen-side exhaust gas emitted during fuel cell stack purging, characterized in that, include: A dynamic hydrogen eliminator, which has a first inlet end and a second inlet end; The hydrogen-side treatment assembly includes a first buffer tank, a hydrogen pump, a second buffer tank, and a mass flow controller. The inlet of the first buffer tank is connected to the hydrogen-side exhaust outlet of the fuel cell stack. The first buffer tank has an alternately opening first outlet and a second outlet. The first outlet, the hydrogen pump, the second buffer tank, the mass flow controller, and the first inlet of the active hydrogen eliminator are connected in sequence. The second outlet is connected to the first inlet of the active hydrogen eliminator. The oxygen-side treatment assembly includes an oxygen supply pipe, a blower, and an oxygen exhaust pipe. The outlet end of the oxygen supply pipe is connected to the second inlet end of the active hydrogen eliminator via the blower, and the inlet end of the oxygen exhaust pipe is connected to the oxygen-side exhaust outlet of the fuel cell stack.

2. The apparatus for rapid start-up of a fuel cell according to claim 1, characterized in that, The hydrogen-side treatment assembly further includes a delivery pipeline, which includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The first connecting pipe connects the hydrogen-side exhaust outlet of the fuel cell stack to the inlet of the first buffer tank. The second connecting pipe connects the first outlet of the first buffer tank to the inlet of the fourth connecting pipe. The third connecting pipe connects the second outlet of the first buffer tank to the inlet of the fourth connecting pipe. The outlet of the fourth connecting pipe is connected to the first inlet of the active hydrogen eliminator. The hydrogen pump, the second buffer tank, and the mass flow controller are all mounted on the second connecting pipe.

3. The apparatus for rapid start-up of a fuel cell according to claim 2, characterized in that, The hydrogen-side processing assembly further includes a first check valve installed on the first connecting pipe, a second check valve and a first solenoid valve installed on the second connecting pipe, a third check valve and a second solenoid valve installed on the third connecting pipe, and a fourth check valve installed on the fourth connecting pipe.

4. The apparatus for rapid start-up of a fuel cell according to claim 3, characterized in that, The hydrogen-side processing assembly also includes a first pressure sensor mounted on the first buffer tank and a second pressure sensor mounted on the second buffer tank; The first pressure sensor is electrically connected to the hydrogen pump, and the first pressure sensor is configured to turn on the hydrogen pump when the pressure value it detects reaches a preset value. The second pressure sensor is electrically connected to the mass flow controller, and the mass flow controller is configured to activate when the pressure value detected by the second pressure sensor reaches a preset value.

5. The apparatus for rapid start-up of a fuel cell according to claim 4, characterized in that, The device also includes a temperature sensor installed inside the active hydrogen eliminator, the temperature sensor being electrically connected to the mass flow controller, the mass flow controller operating according to the temperature inside the active hydrogen eliminator.

6. The apparatus for rapid start-up of a fuel cell according to claim 1, characterized in that, The catalyst used in the active hydrogen eliminator is made of Pt alumina, palladium alumina, or rhodium alumina.

7. The apparatus for rapid start-up of a fuel cell according to claim 1, characterized in that, The oxygen-side treatment assembly also includes a reflux pipe, the inlet end of which is connected to the oxygen exhaust pipe, and the outlet end of which is connected to the oxygen supply pipe.

8. The apparatus for rapid start-up of a fuel cell according to claim 7, characterized in that, The oxygen-side treatment assembly also includes a fifth check valve and a third solenoid valve installed on the oxygen supply pipe, and a sixth check valve and a fourth solenoid valve installed on the oxygen exhaust pipe.

9. The apparatus for rapid start-up of a fuel cell according to claim 8, characterized in that, The oxygen-side processing assembly also includes an oxygen concentration sensor installed on the oxygen supply pipe, wherein the oxygen concentration sensor is electrically connected to the blower and is used to control the blower operation based on the detected oxygen concentration.

10. A method for rapid start-up of a fuel cell, characterized in that, An apparatus suitable for rapid start-up of a fuel cell as described in any one of claims 1-9, comprising the following steps: Before purging the fuel cell stack, turn on the blower and adjust it to the preset speed, and monitor the oxygen concentration in the sealed chamber to ensure it is within the normal range. Start the fuel cell stack purging, open the first outlet of the first buffer tank and close the second outlet, and simultaneously start the hydrogen pump until the pressure of the second buffer tank reaches the preset value. Then, start the mass flow controller to introduce hydrogen into the active hydrogen eliminator to the maximum extent. Monitor the temperature of the active hydrogen eliminator in real time until the temperature rises to the limit. After the fuel cell stack is purged, the first outlet of the first buffer tank is closed and the second outlet is opened, and the fuel cell stack enters the operating state, thus completing the startup.

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