Rapid activation method for fuel cell

Abstract

The invention discloses a fuel cell rapid activation method, and relates to the technical field of fuel cells, and the activation method comprises the steps of early-stage preparation, electrode pretreatment, activation reagent injection, activation treatment, post-treatment and evaluation and optimization. The method has the advantages that the electrochemical impedance spectrometer is used for state inspection of the electrode and other components in the electrode pretreatment stage, the reliability of the fuel cell to be detected is ensured, the surface of the electrode is deeply cleaned through the cleaning agent and the ultrasonic cleaning machine, dust, oil stains and impurities on the surface of the electrode can be effectively removed, and the detection accuracy is improved. Meanwhile, the microstructure and chemical composition of the surface of the electrode are improved by utilizing a plasma technology, and the catalytic activity and corrosion resistance of the electrode are improved, so that the activation efficiency and the operation stability of the fuel cell are improved, and potential abnormities can be found and treated in time by evaluating the performance in real time; and the fuel cell is ensured to operate in an optimal state.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cells, in particular to a rapid activation method for fuel cells. Background Art

[0002] As an efficient and environmentally friendly energy conversion device, fuel cells have received extensive attention and application in many fields such as energy, transportation, and electricity in recent years. However, the performance and stability of fuel cells are affected by many factors, among which the state and activation effect of the electrode are one of the key factors;

[0003] Traditional fuel cell activation processes often lack a systematic pretreatment step, resulting in the presence of dust, oil and impurities on the electrode surface. These pollutants will hinder the electrochemical reaction, reduce the catalytic activity and corrosion resistance of the electrode, and thus affect the activation efficiency and operating stability of the fuel cell. To this end, we propose a method for rapid activation of fuel cells. Summary of the invention

[0004] The object of the present invention is to provide a method for rapid activation of a fuel cell.

[0005] In order to solve the problems raised in the above background technology, the present invention provides the following technical solutions: a method for rapid activation of a fuel cell, comprising the following steps:

[0006] Step 1: Preliminary preparation: testing the working status of the fuel cell and its components, and preparing the reagents and equipment required for activation;

[0007] Step 2: Electrode pretreatment: clean the fuel cell electrode, electrolyte layer and seal, and soak the electrode in a solution with a certain pH value according to the material of the electrode;

[0008] Step 3: injecting the activation reagent into the electrolyte layer of the fuel cell using a liquid injection device, and monitoring the pressure, temperature and liquid level of the fuel cell during the injection process;

[0009] Step 4: Activation treatment: connect the fuel cell injected with the activation reagent to the activation device, and set various parameters of the activation device;

[0010] Step 5: Post-processing: After activation is completed, the fuel cell is disassembled from the activation device, the remaining activation reagent is discharged, the residual activation reagent and impurities are removed, and the electrodes are inspected. If there is no abnormality, the fuel cell is reassembled;

[0011] Step 6: Evaluation and optimization: Conduct comprehensive performance tests on the activated fuel cell, compare the test results with the performance before activation, evaluate the activation effect, and adjust the parameters during the activation process based on the evaluation results. Establish a fuel cell activation database and record the process and results of each activation.

[0012] As a further solution of the present invention: in the step 1, the specific method of preliminary preparation is to use an electrochemical impedance spectrometer to inspect the electrodes, electrolyte layers, seals and connecting parts of the fuel cell.

[0013] As a further scheme of the present invention: In the step 2, the electrode pretreatment method is to use a fuel cell-specific cleaning agent and an ultrasonic cleaning machine to remove dust, oil and other impurities attached to the surface of the fuel cell electrode, electrolyte layer and seal, prepare dilute sulfuric acid with a pH value of 3 and a sodium hydroxide solution with a pH value of 12, adjust the pH value of the solution to a desired range according to the type of fuel cell, and the desired range is set according to the historical commonly used pH value of this type of fuel cell, immerse the cleaned electrode in the adjusted pH solution for 1 hour, observe the solution state and electrode surface changes every 10 minutes, and after the immersion is completed, take out the electrode from the solution, rinse it with deionized water to remove residual solution components, and use a paper towel to absorb the moisture on the electrode surface.

[0014] As a further solution of the present invention: during the electrode pretreatment process, plasma treatment technology is used to modify the surface of the fuel cell electrode, nitrogen is used as the plasma gas, the gas flow rate is 10sccm-100sccm, and the treatment temperature is 100°C-200°C.

[0015] As a further scheme of the present invention: in the step three, the activation reagent is hydrogen, and the specific method of injecting the activation reagent is to inject the hydrogen into the electrolyte layer of the fuel cell through the gas pipeline of the hydrogen tank. A sensor is provided at the inlet position of the hydrogen injection into the fuel cell, which can monitor the flow rate, pressure and temperature of the hydrogen in real time. The flow rate of hydrogen is between 0Kg / H-12Kg / H as a normal value, the pressure of hydrogen is between 4bar-15bar as a normal value, and the temperature of hydrogen is between 40℃-60℃ as a normal value. During the injection of the activation reagent, the fuel cell pressure, temperature, liquid level and the injection amount and time of the activation reagent are recorded.

[0016] As a further solution of the present invention: in the step 4, the specific method of the activation treatment is to connect the fuel cell that has been injected with hydrogen to the activation equipment. For small fuel cells, the current value is set to 50mA-300mA, the starting voltage is 0.6V, it is increased by 0.05V every 30 minutes, and the maximum voltage is less than 0.85V, the temperature range is 50℃-70℃, and the activation time is 2h-8h. For large fuel cells, the current value is set to 500mA-5A, the starting voltage is 0.4V, it is increased by 0.1V every 45 minutes, and the maximum voltage is less than 0.75V, the temperature range is 70℃-90℃, and the activation time is 12h-20h. During the activation process, the output power, voltage stability and current density of the fuel cell are continuously monitored. When abnormal fluctuations in performance indicators are found, the activation is immediately stopped and troubleshooting is performed.

[0017] As a further solution of the present invention: In step five, the specific method of post-processing is to disconnect all power connections, remove the fuel cell from the activation device, use a hydrogen emission control device to discharge the remaining hydrogen in the fuel cell, use a high-pressure nitrogen purge device to remove residual hydrogen and impurities, and use an aqueous detergent to clean the inside of the fuel cell. After cleaning, rinse with deionized water for 3-5 times, and use a sealant gun to seal the discharge port.

[0018] As a further solution of the present invention: in the step six, the specific method of performance testing is to use a motor dynamic power tester to test the power of the fuel cell, a voltage monitor calibrator to test the voltage stability of the fuel cell, a current density ruler to test the current density of the fuel cell, and an energy analyzer to test the energy conversion efficiency of the fuel cell; the specific method of adjusting the parameters in the activation process according to the evaluation results is: if the output power is low, adjust the current and voltage parameters of the activation equipment; if the voltage stability is low, adjust the temperature in the activation process; if the current density is low, increase the current and the amount of activator injection; if the energy conversion efficiency is low, adjust the current and voltage parameters of the activation equipment; the database for fuel cell activation is established by using the MySQL database management system to store the parameter data in the entire test step.

[0019] As a further solution of the present invention: in step 6, the activation effect is evaluated by using a formula to calculate the activation effect. The specific formula is as follows:

[0020] F=ω1A+ω2B+ω3C+ω4D

[0021] Among them, F represents the score of the activation effect, ω1, ω2, ω3 and ω4 represent the weights of the four factors of power, voltage stability, current density and energy conversion efficiency respectively, ω1:ω2:ω3:ω4=3:3:2:2, A, B, C and D represent the degree of power increase, the degree of voltage stability improvement, the degree of current density change and the degree of energy conversion efficiency change respectively. The larger the value of F, the better the activation effect.

[0022] By adopting the above technical solution, compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. The present invention uses an electrochemical impedance spectrometer to check the status of electrodes and other components during the electrode pretreatment stage to ensure the reliability of the fuel cell to be tested. The electrode surface is deeply cleaned by a cleaning agent and an ultrasonic cleaning machine to effectively remove dust, oil stains and impurities on the electrode surface. At the same time, plasma technology is used to improve the microstructure and chemical composition of the electrode surface, thereby improving the catalytic activity and corrosion resistance of the electrode, thereby improving the activation efficiency and operation stability of the fuel cell;

[0024] 2. The present invention sets sensors to monitor multiple parameters of the fuel cell such as pressure, temperature, and hydrogen flow rate in real time during the injection of activation reagents and the activation process, dynamically adjusts the current and voltage of the activation equipment, and evaluates the performance in real time, so as to timely discover and handle potential anomalies, ensure that the fuel cell operates in the best state, and reduce the risk of failure;

[0025] 3. The present invention quantitatively analyzes the activation effect by using evaluation indicators in four dimensions, namely power, voltage stability, current density and energy conversion efficiency, in the performance test after activation, and constructs a special database to record the data of each activation. It can accurately reflect the activation effect of the fuel cell and provide a scientific basis for subsequent parameter adjustment and optimization. By continuously optimizing the parameters, the activation efficiency of the fuel cell can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the activation method steps in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] The present invention provides a method for rapid activation of a fuel cell, comprising the following steps:

[0030] Step 1: Preliminary preparation: testing the working status of the fuel cell and its components, and preparing the reagents and equipment required for activation;

[0031] Step 2: Electrode pretreatment: clean the fuel cell electrode, electrolyte layer and seal, and soak the electrode in a solution with a certain pH value according to the material of the electrode;

[0032] Step 3: injecting the activation reagent into the electrolyte layer of the fuel cell using a liquid injection device, and monitoring the pressure, temperature and liquid level of the fuel cell during the injection process;

[0033] Step 4: Activation treatment: connect the fuel cell injected with the activation reagent to the activation device, and set various parameters of the activation device;

[0034] Step 5: Post-processing: After activation is completed, the fuel cell is disassembled from the activation device, the remaining activation reagent is discharged, the residual activation reagent and impurities are removed, and the electrodes are inspected. If there is no abnormality, the fuel cell is reassembled;

[0035] Step 6: Evaluation and optimization: Conduct comprehensive performance tests on the activated fuel cell, compare the test results with the performance before activation, evaluate the activation effect, and adjust the parameters during the activation process based on the evaluation results. Establish a fuel cell activation database to record the process and results of each activation.

[0036] In step 1, the specific method of preliminary preparation is to use an electrochemical impedance spectrometer to inspect the electrodes, electrolyte layers, seals and connecting parts of the fuel cell;

[0037] In step 2, the electrode pretreatment method is to use a fuel cell-specific cleaning agent and an ultrasonic cleaning machine to remove dust, oil and other impurities attached to the surface of the fuel cell electrode, electrolyte layer and seal, prepare dilute sulfuric acid with a pH value of 3 and a sodium hydroxide solution with a pH value of 12, adjust the pH value of the solution to the required range according to the type of fuel cell, and the required range is set according to the historical commonly used pH value of this type of fuel cell, immerse the cleaned electrode in the adjusted pH solution for 1 hour, observe the solution state and electrode surface changes every 10 minutes, and after the immersion is completed, take out the electrode from the solution, rinse it with deionized water to remove the residual solution components, and use a paper towel to absorb the moisture on the electrode surface;

[0038] During the electrode pretreatment process, plasma treatment technology is used to modify the surface of the fuel cell electrode. Nitrogen is used as the plasma gas, the gas flow rate is 10sccm-100sccm, and the treatment temperature is 100℃-200℃.

[0039] Specific work flow: In a new energy automobile manufacturing enterprise, the fuel cell rapid activation method of the present invention is adopted. In the electrode pretreatment stage, an electrochemical impedance spectrometer is used to inspect the electrode, electrolyte layer, seal and connection parts of the fuel cell, and some potential poor connection problems are found and repaired in time. Then, a fuel cell-specific cleaning agent and an ultrasonic cleaning machine are used to clean the electrode surface to remove oil and impurities on the electrode surface. Then, plasma treatment technology is used to modify the electrode surface, using nitrogen as the plasma gas, the gas flow rate is set to 50sccm, and the treatment temperature is 150°C. After treatment, the surface roughness of the electrode is significantly reduced, and the catalytic activity is increased by about 20%;

[0040] During the injection of the activation reagent, hydrogen is injected into the electrolyte layer of the fuel cell through the gas pipeline of the hydrogen tank. The sensor at the inlet position monitors the flow, pressure and temperature of the hydrogen in real time. The flow of hydrogen is stable at 5Kg / H, the pressure is maintained at 8bar, and the temperature is controlled at 50°C. In the activation treatment stage, according to the specifications of the fuel cell (a small fuel cell), the current value is set to 300mA, the starting voltage is 0.5V, and it is increased by 0.08V every 40 minutes. The maximum voltage does not exceed 0.8V, the temperature range is 60°C-80°C, and the activation time is 10 hours. During the activation process, the output power, voltage stability and current density of the fuel cell are continuously monitored. By adjusting the parameters in real time, the fuel cell is ensured to operate in the best state. After the activation is completed, a performance test is carried out. The output power is increased by 30% using the motor dynamic power tester, the voltage monitor calibrator shows that the voltage stability is improved by 25%, the current density measured by the current density ruler is increased by 20%, and the energy conversion efficiency is increased by 15% using the energy analyzer. Through this activation, the cruising range of the company's new energy vehicles has been significantly improved, and the reliability and stability of the vehicle have also been improved.

[0041] Furthermore, during the electrode pretreatment stage, an electrochemical impedance spectrometer is used to check the status of electrodes and other components to ensure the reliability of the fuel cell to be tested. The electrode surface is deeply cleaned by detergents and ultrasonic cleaners to effectively remove dust, oil stains and impurities on the electrode surface. At the same time, plasma technology is used to improve the microstructure and chemical composition of the electrode surface, thereby improving the catalytic activity and corrosion resistance of the electrode, thereby improving the activation efficiency and operating stability of the fuel cell.

[0042] Embodiment 2:

[0043] Based on the first embodiment, in step 3, the activation reagent is hydrogen, and the specific method of injecting the activation reagent is to inject hydrogen into the electrolyte layer of the fuel cell through the gas pipeline of the hydrogen tank. A sensor is provided at the inlet position of the hydrogen injection fuel cell, which can monitor the flow rate, pressure and temperature of the hydrogen in real time. The flow rate of hydrogen is between 0Kg / H-12Kg / H as a normal value, the pressure of hydrogen is between 4bar-15bar as a normal value, and the temperature of hydrogen is between 40°C-60°C as a normal value. During the injection of the activation reagent, the fuel cell pressure, temperature, liquid level, and the injection amount and time of the activation reagent are recorded;

[0044] In step 4, the specific method of activation treatment is to connect the fuel cell that has been injected with hydrogen to the activation equipment. For small fuel cells, the current value is set to 50mA-300mA, the starting voltage is 0.6V, and it is increased by 0.05V every 30min, and the maximum voltage is less than 0.85V. The temperature range is 50℃-70℃, and the activation time is 2h-8h. For large fuel cells, the current value is set to 500mA-5A, the starting voltage is 0.4V, and it is increased by 0.1V every 45min, and the maximum voltage is less than 0.75V. The temperature range is 70℃-90℃, and the activation time is 12h-20h. During the activation process, the output power, voltage stability and current density of the fuel cell are continuously monitored. When abnormal fluctuations in performance indicators are found, the activation is immediately stopped and troubleshooting is carried out;

[0045] In step five, the specific method of post-processing is to disconnect all power connections, remove the fuel cell from the activation equipment, use the hydrogen emission control device to discharge the remaining hydrogen in the fuel cell, use a high-pressure nitrogen purge device to remove residual hydrogen and impurities, and use an aqueous detergent to clean the inside of the fuel cell. After cleaning, rinse with deionized water 3-5 times and use a sealant gun to seal the exhaust port.

[0046] Specific workflow: In a laboratory, a small proton exchange membrane fuel cell was activated. First, in the preliminary preparation stage, an electrochemical impedance spectrometer was used to conduct a comprehensive inspection of the fuel cell to determine the initial state of the battery. In the electrode pretreatment stage, the electrode was immersed in a dilute sulfuric acid solution with a pH value of 3 for 1 hour, and the solution state and electrode surface changes were observed every 10 minutes. After the immersion, it was rinsed with deionized water and the water was dried. Then, plasma treatment was performed using nitrogen plasma with a gas flow rate of 30sccm and a treatment temperature of 120°C.

[0047] During the activation reagent injection stage, the flow rate, pressure and temperature of hydrogen are strictly controlled to be maintained at 2Kg / H, 6bar and 45°C respectively. During the activation treatment stage, the current value is set to 100mA, the starting voltage is 0.6V, and it is increased by 0.05V every 30 minutes. The temperature range is 55°C and the activation time is 5 hours. During the activation process, the performance indicators are monitored in real time, and troubleshooting is carried out in time when abnormal fluctuations are found. After the activation is completed, performance tests are carried out. The results show that the output power is increased by 25%, the voltage stability is improved by 20%, the current density is increased by 15%, and the energy conversion efficiency is increased by 10%.

[0048] Furthermore, by setting sensors to monitor multiple parameters of the fuel cell in real time during the injection of activation reagents and the activation process, such as pressure, temperature, hydrogen flow, etc., dynamically adjusting the current and voltage of the activation equipment, and evaluating the performance in real time, potential anomalies can be discovered and handled in a timely manner, ensuring that the fuel cell operates in the best condition and reducing the risk of failure.

[0049] Embodiment three:

[0050] Based on the second embodiment, in step six, the specific method of performance testing is to use a motor dynamic power tester to test the power of the fuel cell, a voltage monitor calibrator to test the voltage stability of the fuel cell, a current density ruler to test the current density of the fuel cell, and an energy analyzer to test the energy conversion efficiency of the fuel cell. The specific method of adjusting the parameters in the activation process according to the evaluation results is to adjust the current and voltage parameters of the activation device if the output power is low, adjust the temperature in the activation process if the voltage stability is low, increase the current size and the amount of activator injection if the current density is low, and adjust the current and voltage parameters of the activation device if the energy conversion efficiency is low. The database for fuel cell activation is established by using the MySQL database management system to store the parameter data in the entire test step;

[0051] In step 6, the activation effect is evaluated by using a formula to calculate the activation effect. The specific formula is as follows:

[0052] F=ω1A+ω2B+ω3C+ω4D

[0053] Among them, F represents the score of the activation effect, ω1, ω2, ω3 and ω4 represent the weights of the four factors of power, voltage stability, current density and energy conversion efficiency respectively, ω1:ω2:ω3:ω4=3:3:2:2, A, B, C and D represent the degree of power increase, the degree of voltage stability improvement, the degree of current density change and the degree of energy conversion efficiency change respectively. The larger the value of F, the better the activation effect.

[0054] Specific workflow: In a fuel cell manufacturer, a batch of large fuel cells were activated. In the early preparation, an electrochemical impedance spectrometer was used to carefully check the status of each fuel cell. In the electrode pretreatment stage, ultrasonic cleaning was first performed, and then the electrode was immersed in a sodium hydroxide solution with an adjusted pH value of 12. Nitrogen was used for plasma treatment, with a gas flow rate of 80sccm and a treatment temperature of 180°C.

[0055] During the injection of activation reagents, ensure that the hydrogen flow rate is 8Kg / H, the pressure is 12bar, and the temperature is 55℃. During the activation treatment, set the current value to 4A, the starting voltage to 0.4V, increase 0.1V every 45 minutes, the maximum voltage does not exceed 0.7V, the temperature range is 80℃, and the activation time is 15 hours. During the activation process, pay close attention to various performance indicators of the fuel cell. After the activation is completed, performance tests show that the output power is increased by 35%, the voltage stability is improved by 30%, the current density is increased by 25%, and the energy conversion efficiency is increased by 20%.

[0056] Furthermore, by using the four-dimensional evaluation indicators of power, voltage stability, current density and energy conversion efficiency to quantitatively analyze the activation effect in the performance test after activation, and building a dedicated database to record the data of each activation, it can accurately reflect the activation effect of the fuel cell and provide a scientific basis for subsequent parameter adjustment and optimization. By continuously optimizing the parameters, the activation efficiency of the fuel cell can be further improved.

[0057] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for rapid activation of a fuel cell, characterized in that: The following steps are involved: Step 1: Preliminary preparation: testing the working status of the fuel cell and its components, and preparing the reagents and equipment required for activation; Step 2: Electrode pretreatment: clean the fuel cell electrode, electrolyte layer and seal, and soak the electrode in a solution with a certain pH value according to the material of the electrode; Step 3: injecting the activation reagent into the electrolyte layer of the fuel cell using a liquid injection device, and monitoring the pressure, temperature and liquid level of the fuel cell during the injection process; Step 4: Activation treatment: connect the fuel cell injected with the activation reagent to the activation device, and set various parameters of the activation device; Step 5: Post-processing: After activation is completed, the fuel cell is disassembled from the activation device, the remaining activation reagent is discharged, the residual activation reagent and impurities are removed, and the electrodes are inspected. If there is no abnormality, the fuel cell is reassembled; Step 6: Evaluation and optimization: Conduct comprehensive performance tests on the activated fuel cell, compare the test results with the performance before activation, evaluate the activation effect, and adjust the parameters during the activation process based on the evaluation results. Establish a fuel cell activation database and record the process and results of each activation.

2. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In the step 1, the specific method of the preliminary preparation is to use an electrochemical impedance spectrometer to inspect the electrodes, electrolyte layers, seals and connecting parts of the fuel cell.

3. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In the step 2, the electrode pretreatment method is to use a fuel cell-specific cleaning agent and an ultrasonic cleaning machine to remove dust, oil and other impurities attached to the surface of the fuel cell electrode, electrolyte layer and seal, prepare dilute sulfuric acid with a pH value of 3 and a sodium hydroxide solution with a pH value of 12, adjust the pH value of the solution to a desired range according to the type of fuel cell, and the desired range is set according to the historical commonly used pH value of this type of fuel cell, immerse the cleaned electrode in the adjusted pH solution for 1 hour, observe the solution state and electrode surface changes every 10 minutes, and after the immersion is completed, take out the electrode from the solution, rinse it with deionized water to remove the residual solution components, and use a paper towel to absorb the moisture on the electrode surface.

4. A method for rapid activation of a fuel cell according to claim 1, characterized in that: During the electrode pretreatment process, plasma treatment technology is used to modify the surface of the fuel cell electrode, nitrogen is used as plasma gas, the gas flow rate is 10sccm-100sccm, and the treatment temperature is 100°C-200°C.

5. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In the step three, the activation reagent is hydrogen. The specific method of injecting the activation reagent is to inject hydrogen into the electrolyte layer of the fuel cell through the gas pipeline of the hydrogen tank. A sensor is provided at the inlet position of the hydrogen injection fuel cell, which can monitor the flow rate, pressure and temperature of the hydrogen in real time. The normal value is that the flow rate of hydrogen is between 0Kg / H-12Kg / H, the normal value is that the pressure of hydrogen is between 4bar-15bar, and the normal value is that the temperature of hydrogen is between 40℃-60℃. During the injection of the activation reagent, the fuel cell pressure, temperature, liquid level, and the injection amount and time of the activation reagent are recorded.

6. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In the step 4, the specific method of the activation treatment is to connect the fuel cell that has been injected with hydrogen to the activation equipment. For small fuel cells, the current value is set to 50mA-300mA, the starting voltage is 0.6V, it is increased by 0.05V every 30 minutes, and the maximum voltage is less than 0.85V, the temperature range is 50℃-70℃, and the activation time is 2h-8h. For large fuel cells, the current value is set to 500mA-5A, the starting voltage is 0.4V, it is increased by 0.1V every 45 minutes, and the maximum voltage is less than 0.75V, the temperature range is 70℃-90℃, and the activation time is 12h-20h. During the activation process, the output power, voltage stability and current density of the fuel cell are continuously monitored. When abnormal fluctuations in performance indicators are found, the activation is immediately stopped and troubleshooting is performed.

7. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In step five, the specific method of post-processing is to disconnect all power connections, remove the fuel cell from the activation device, use the hydrogen emission control device to discharge the remaining hydrogen in the fuel cell, use a high-pressure nitrogen purge device to remove residual hydrogen and impurities, and use an aqueous detergent to clean the inside of the fuel cell. After cleaning, rinse with deionized water 3-5 times and seal the exhaust port with a sealant gun.

8. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In step six, the specific method of performance testing is to use a motor dynamic power tester to test the power of the fuel cell, a voltage monitor calibrator to test the voltage stability of the fuel cell, a current density ruler to test the current density of the fuel cell, and an energy analyzer to test the energy conversion efficiency of the fuel cell. The specific method of adjusting the parameters in the activation process according to the evaluation results is: if the output power is low, adjust the current and voltage parameters of the activation equipment; if the voltage stability is low, adjust the temperature in the activation process; if the current density is low, increase the current and the amount of activator injected; if the energy conversion efficiency is low, adjust the current and voltage parameters of the activation equipment; the method of establishing the database for fuel cell activation is to use the MySQL database management system to store the parameter data in the entire test step.

9. A method for rapid activation of a fuel cell according to claim 1, characterized in that: In step 6, the activation effect is evaluated by using a formula to calculate the activation effect. The specific formula is as follows: F=ω1A+ω2B+ω3C+ω4D Among them, F represents the score of the activation effect, ω1, ω2, ω3 and ω4 represent the weights of the four factors of power, voltage stability, current density and energy conversion efficiency respectively, ω1:ω2:ω3:ω4=3:3:2:2, A, B, C and D represent the degree of power increase, the degree of voltage stability improvement, the degree of current density change and the degree of energy conversion efficiency change respectively. The larger the value of F, the better the activation effect.

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