Fuel cell low temperature shutdown purging control method and system, fuel cell and automobile

Abstract

This invention discloses a fuel cell cryogenic shutdown purging control method, system, fuel cell, and vehicle in the field of fuel cell technology. The method includes: in response to a control command to enter a shutdown purging procedure, collecting and recording the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack; calculating the rate of change of the absolute humidity entering the stack based on the collected absolute humidity; determining the purging time according to a set fuel cell cryogenic shutdown purging logic based on the ambient absolute humidity, the absolute humidity entering the stack, the rate of change of the absolute humidity entering the stack, and a given target ambient temperature; and stopping the purging procedure in response to the purging duration reaching the determined purging time, so as to enter the shutdown procedure. This invention improves the control accuracy of the purging time, preventing both over-purging and under-purging.

Description

Technical Field

[0001] This invention belongs to the field of fuel cell technology, specifically relating to a fuel cell low-temperature shutdown purging control method, system, fuel cell, and automobile. Background Technology

[0002] The reactants in a hydrogen fuel cell are hydrogen and oxygen from the air, producing electricity and pure water. Because a large amount of water is generated inside the fuel cell during operation, there are limitations to its storage and startup in low-temperature environments. When a fuel cell vehicle is parked at low temperatures (below 0°C), the water remaining inside the fuel cell may freeze. If the water inside the membrane electrode assembly (MEA) freezes, it can easily form ice crystals, piercing the proton exchange membrane and causing perforation. Furthermore, repeated freezing-thawing cycles can lead to a loosening of the MEA's internal structure, resulting in deterioration of electrical performance—all irreversible damage that affects the fuel cell's lifespan. If ice forms inside the bipolar plates, it can affect the transfer of air and hydrogen to the catalyst surface; if the area is large, the fuel cell will fail to start on subsequent attempts. If ice forms on components such as the throttle body, hydrogen recirculation pump, and hydrogen exhaust valve, it can cause these components to jam, leading to malfunction and preventing the fuel cell from starting and operating normally.

[0003] Therefore, when storing a fuel cell at low temperatures after it has been operating normally, it is essential to purge the liquid water from the membrane electrode assembly, bipolar plates, and other components through which water flows by using gas purging. This ensures that the fuel cell stack and system will not suffer irreversible damage or fail to start up again due to freezing during storage at low temperatures.

[0004] Purging occurs on both the air and hydrogen sides of the system. On the air side, a large flow of air is used to blow liquid water from the bipolar plates, fuel cell stack, and various parts of the air subsystem to the outside. Once the air side is sufficiently dry, the water content in the hydrogen side and proton exchange membrane will gradually decrease to a safe level, ensuring the safety of the fuel cell stack during storage in low-temperature or even extremely cold environments. Generally, the lower the storage temperature, the lower the water content needs to be throughout the fuel cell, and the longer the purging time required under the same purging conditions. Current technology does not precisely control the purging time, easily leading to insufficient or excessive purging. Excessive purging reduces stack lifespan and subsequent startup performance, and wastes electricity (energy consumed during purging of various components) and hydrogen (hydrogen is released during purging). Insufficient purging can damage the fuel cell stack at low temperatures, while excessive purging reduces stack lifespan and subsequent startup performance, and wastes electricity and hydrogen. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a fuel cell low-temperature shutdown purging control method, system, fuel cell, and vehicle, which improves the control accuracy of purging time, preventing both over-purging and under-purging.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, a fuel cell cryogenic shutdown purging control method is provided, comprising: in response to a control command to enter a shutdown purging procedure, acquiring and recording the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack; calculating the rate of change of the absolute humidity of the air entering the stack based on the acquired absolute humidity of the air entering the stack; determining the purging time according to a set fuel cell cryogenic shutdown purging logic based on the ambient absolute humidity, the absolute humidity of the air entering the stack, the rate of change of the absolute humidity of the air entering the stack, and a given target ambient temperature; and stopping the purging procedure in response to the purging time reaching the determined purging time, so as to enter the shutdown procedure.

[0008] Furthermore, the method for determining the target ambient temperature includes: (1) using the lowest temperature collected in the past set time interval as the target ambient temperature; (2) using the lowest ambient temperature predicted in the local future set time interval as the target ambient temperature; and (3) using the ambient temperature manually input as the target ambient temperature.

[0009] Further, determining the purging time according to the set fuel cell low-temperature shutdown purging logic based on the absolute humidity of the fuel cell pile includes: taking the time t1 when the absolute humidity of the fuel cell pile begins to decrease as the purging time for shutting down the fuel cell in the target ambient temperature above 0°C; taking the time t2 when the rate of change of the absolute humidity of the fuel cell pile increases to a first set value as the purging time for shutting down the fuel cell in the target ambient temperature of 0 to -10°C; taking the time t3 when the rate of change of the absolute humidity of the fuel cell pile reaches the maximum k0 as the purging time for shutting down the fuel cell in the target ambient temperature of -10 to -20°C; taking the time t4 when the absolute humidity of the fuel cell pile decreases to H2 as the purging time for shutting down the fuel cell in the target ambient temperature of -20 to -25°C; and taking the time t5 when the absolute humidity of the fuel cell pile decreases to H3 as the purging time for shutting down the fuel cell in the target ambient temperature below -25°C.

[0010] Furthermore, it also includes a set maximum purging protection time. When the purging time is greater than or equal to the set maximum purging protection time, the purging time is replaced by the set maximum purging protection time.

[0011] Furthermore, the methods for determining H2 include:

[0012] H2=(H1-H0)×a%

[0013] Where H2 is the absolute humidity of the infeed when the purging time is determined to be t4, H1 is the absolute humidity of the infeed collected at the start of the purging, H0 is the collected ambient absolute humidity, and a% is a set percentage change in the absolute humidity of the infeed.

[0014] Furthermore, the methods for determining H3 include:

[0015] H3=(H1-H0)×b%

[0016] Where H3 is the absolute humidity of the infeed when the purging time is determined to be t5, and b% is another set percentage change in the absolute humidity of the infeed.

[0017] Secondly, a fuel cell cryogenic shutdown purging control system is provided, comprising: an absolute humidity acquisition module, used to acquire and record the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack in response to a control command to enter the shutdown purging procedure; a calculation module, used to calculate the rate of change of the absolute humidity entering the stack based on the acquired absolute humidity entering the stack; a purging time determination module, used to determine the purging time according to the ambient absolute humidity, the absolute humidity entering the stack, the rate of change of the absolute humidity entering the stack, and a given target ambient temperature, according to a set fuel cell cryogenic shutdown purging logic based on the absolute humidity entering the stack; and a purging execution module, used to stop the purging procedure in response to the purging duration reaching the determined purging time, so as to enter the shutdown procedure.

[0018] Thirdly, a fuel cell is provided, wherein the fuel cell is configured with the fuel cell cryogenic shutdown purging control system described in the second aspect.

[0019] Further, it includes a fuel cell stack, a humidifier, an air compressor, a second humidity sensor installed on the inlet pipe of the air compressor, and a first humidity sensor installed on the air inlet pipe of the fuel cell stack; the air compressor is used to send compressed air into the humidifier, and the air humidified by the humidifier enters the fuel cell stack through the air inlet pipe of the fuel cell stack; the air discharged from the fuel cell stack enters the humidifier and is discharged through the humidifier; the humidifier is used to humidify the low humidity air entering the fuel cell stack using the high humidity air discharged from the fuel cell stack.

[0020] Fourthly, a new energy vehicle is provided, wherein the new energy vehicle is equipped with the fuel cell described in the third aspect.

[0021] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0022] (1) In response to the control command to enter the shutdown purging program, the present invention collects and records the absolute humidity of the environment and the absolute humidity of the air entering the fuel cell stack; calculates the rate of change of the absolute humidity of the air entering the stack based on the collected absolute humidity of the air entering the stack; determines the purging time according to the set fuel cell low temperature shutdown purging logic based on the absolute humidity of the air entering the stack, based on the absolute humidity of the environment, the absolute humidity of the air entering the stack, the rate of change of the absolute humidity of the air entering the stack and the given target ambient temperature; and stops the purging program in response to the purging time reaching the determined purging time so as to enter the shutdown program, thereby improving the control accuracy of the purging time and preventing both over-purging and under-purging.

[0023] (2) The present invention can improve the low temperature resistance of fuel cells and extend the service life of fuel cells. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the control logic of a fuel cell low-temperature shutdown purging control method provided in an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a fuel cell system structure is provided in an embodiment of the present invention;

[0026] Figure 3 This is a curve of the absolute humidity entering the fuel cell stack collected by the first humidity sensor installed on the air inlet pipe of the fuel cell stack in this embodiment of the invention.

[0027] Figure 4 This is the curve showing the rate of change of absolute humidity of the pile collected by the first humidity sensor in this embodiment of the invention;

[0028] Figure 2 The components are: 1. Fuel cell stack; 2. Fuel cell hydrogen system; 3. Fuel cell thermal management system; 4. First humidity sensor; 5. Second humidity sensor; 6. Humidifier; 7. Air compressor. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0030] Example 1:

[0031] like Figures 1-4 As shown, this embodiment provides a method for controlling the cryogenic shutdown and purging of a fuel cell. Figure 2As shown, the fuel cell hydrogen system 2 and the fuel cell thermal management system 3 are connected to the fuel cell stack 1, respectively. The air compressor 7 delivers compressed air to the humidifier 6. The humidified air then enters the fuel cell stack 1 through the air inlet pipe. Air discharged from the fuel cell stack 1 enters the humidifier 6 and is discharged through it. The humidifier 6 uses the high-humidity air discharged from the fuel cell stack 1 to humidify the low-humidity air entering the fuel cell stack 1. A first humidity sensor 4 is installed on the air inlet pipe of the fuel cell stack 1 to collect the absolute humidity of the air entering the fuel cell stack 1. A second humidity sensor 5 is installed on the inlet pipe of the air compressor 7 to collect the absolute humidity of the environment.

[0032] The first humidity sensor 4 is located after the humidifier 6 and before the fuel cell stack. The reason is that, based on the principle of the humidifier, the air entering the stack is humidified by the high-humidity air exiting the stack. Low humidity of the air entering the stack definitely means that the humidity entering the stack is reduced. Conversely, low humidity of the air exiting the stack does not necessarily mean that the humidity entering the stack is low, because there will be a certain amount of water stored in the humidifier 6. In order to ensure that the humidity inside the fuel cell stack is reduced to the target value, it is necessary to ensure that the humidifier 6 does not humidify the air entering the stack. Therefore, it is necessary to collect the humidity of the air entering the stack.

[0033] The second humidity sensor 5 is installed at the inlet of the air compressor 7. It collects the absolute humidity of the air before it enters the air compressor 7, which represents the absolute humidity of the current environment when the fuel cell is shut down for purging. The absolute humidity does not change with temperature. After the air passes through the air compressor 7, the temperature rises, but the absolute humidity remains unchanged.

[0034] In the system hardware scheme, all control components and humidity sensors are controlled by the fuel cell controller (FCU). The control wiring harness and fuel cell controller are not shown in this figure.

[0035] like Figure 1 As shown, a fuel cell cryogenic shutdown purging control method includes: in response to a control command to enter a shutdown purging procedure, collecting and recording the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack; calculating the rate of change of the absolute humidity of the air entering the stack based on the collected absolute humidity of the air entering the stack; determining the purging time according to a set fuel cell cryogenic shutdown purging logic based on the ambient absolute humidity, the absolute humidity of the air entering the stack, the rate of change of the absolute humidity of the air entering the stack, and a given target ambient temperature; and stopping the purging procedure in response to the purging time reaching the determined purging time, so as to enter the shutdown procedure.

[0036] The control method described in this embodiment is as follows:

[0037] (1) After receiving the shutdown command, the fuel cell starts to shut down and enters the purging procedure. The purging procedure generally includes the following processes: the system current will drop to the idle point (idle point: the minimum operating power point or current point after the fuel cell stack starts to supply hydrogen and air. If the operating point is further reduced, the average membrane electrode voltage of the fuel cell will exceed 0.85V. At the electrochemical level, the voltage of 0.85V is too high, which will lead to carbon corrosion at the micro level and have a significant impact on the life of the fuel cell). The stack temperature is further reduced to the set value by the fuel cell thermal management system (to facilitate the liquefaction of more gas water and blow it out of the stack). The air side of the stack is purged with a large flow rate (metering ratio). The hydrogen side is purged with high-speed circulation (the circulation pump rotates at high speed or accelerates hydrogen discharge).

[0038] (2) Based on Figure 2 The first humidity sensor 4 and the second humidity sensor 5 are used in the reactor. The first humidity sensor 4 mainly records the absolute humidity of the reactor, and continuously records the curve of the absolute humidity of the reactor over time. At the same time, the correspondence between the rate of change of the absolute humidity of the reactor and time is calculated. The second humidity sensor 5 records the absolute humidity of the environment.

[0039] Based on the ambient absolute humidity, the absolute humidity at the fuel cell inlet, the rate of change of the absolute humidity at the fuel cell inlet, and the given target ambient temperature, the purging time is determined according to the set fuel cell low-temperature shutdown purging logic based on the absolute humidity at the fuel cell inlet, including:

[0040] (a) During the fuel cell shutdown purging process, when the absolute humidity of the fuel cell after being humidified by the humidifier begins to decrease, the time t1 when the absolute humidity of the fuel cell begins to decrease is taken as the purging time for the fuel cell to shut down at the target ambient temperature above 0°C.

[0041] (b) When the rate of change of absolute humidity in the fuel cell begins to increase rapidly, the time t2 when the rate of change of absolute humidity in the fuel cell increases to the first set value is taken as the purging time for the fuel cell to shut down in the target ambient temperature of 0 to -10°C.

[0042] (c) When the rate of change of absolute humidity in the fuel cell reaches the maximum k0, the time t3 when the rate of change of absolute humidity in the fuel cell reaches the maximum k0 is taken as the purging time for the fuel cell to shut down in the target ambient temperature of -10 to -20℃.

[0043] (d) When the absolute humidity of the fuel cell gradually decreases to H2, the time t4 when the absolute humidity of the fuel cell decreases to H2 is taken as the purging time for the fuel cell to shut down in the target ambient temperature of -20 to -25℃.

[0044] (e) When the absolute humidity of the fuel cell gradually decreases to H3, the time t5 when the absolute humidity of the fuel cell decreases to H3 is taken as the purging time for the fuel cell to shut down in the target ambient temperature of less than -25°C.

[0045] (3) Set the longest purging protection time. If t1 to t5 exceeds this time, purging will stop. That is, when the purging time is greater than or equal to the set longest purging protection time, the purging time will be replaced by the set longest purging protection time; if it does not exceed this time, it will be executed according to the t1 to t5 time.

[0046] (4) After the purging stops, start the shutdown: the DC / DC internal discharge further reduces the stack voltage; close the air valves at both ends of the stack to consume the oxygen inside the stack and reduce the stack voltage; the components of each auxiliary system are shut down in sequence, and the shutdown is completed.

[0047] In this embodiment, the target ambient temperature refers to the lowest temperature in the low-temperature environment that the fuel cell may experience after shutdown. The method for determining the target ambient temperature includes:

[0048] (1) The lowest temperature within a previously set time interval is used as the target ambient temperature; for example, the ambient temperature collected by the temperature sensor installed at the front end of the air compressor is the lowest value collected at a specific time (e.g., 48 hours) in the past.

[0049] (2) The target ambient temperature is the lowest ambient temperature in the local future within a set time interval as predicted; for example, the lowest ambient temperature in the local future within a specific time (e.g., 48 hours) obtained through a remote data monitoring platform.

[0050] (3) Temperature obtained through other means, such as using the ambient temperature input manually as the target ambient temperature.

[0051] The meanings of each character symbol and the data source / calculation method in this application are summarized in Table 1.

[0052] Table 1 Summary of the meaning and data source / calculation method of each character symbol.

[0053]

[0054]

[0055]

[0056]

[0057] This invention can accurately determine the optimal purging time in different low temperature and humidity environments, providing a precise judgment logic for low temperature shutdown purging, avoiding the problems of fuel cell performance degradation caused by over-purging and fuel cell freezing damage caused by insufficient purging at low temperatures;

[0058] (1) Different temperatures: Different precise purging times were set for several temperature ranges, including above 0℃, -10~0℃, -20~-25℃, and below -25℃.

[0059] (2) Different humidity: The purging time is calculated based on the current ambient humidity, thus taking into account the purging time under different humidity conditions in different regions and seasons.

[0060] Example 2:

[0061] Based on the fuel cell cryogenic shutdown purging control method described in Embodiment 1, this embodiment provides a fuel cell cryogenic shutdown purging control system, including:

[0062] The absolute humidity acquisition module is used to collect and record the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack in response to the control command to enter the shutdown purging procedure.

[0063] The calculation module is used to calculate the rate of change of the absolute humidity of the pile based on the collected absolute humidity of the pile.

[0064] The purging time determination module is used to determine the purging time according to the set fuel cell low-temperature shutdown purging logic based on the ambient absolute humidity, the absolute humidity of the fuel cell, the rate of change of the absolute humidity of the fuel cell and the given target ambient temperature.

[0065] The purging execution module is used to stop the purging program in response to the purging time reaching a certain purging duration, so as to enter the shutdown program.

[0066] Example 3:

[0067] Based on the fuel cell low-temperature shutdown purging control system described in Embodiment 2, this embodiment provides a fuel cell equipped with the fuel cell low-temperature shutdown purging control system described in Embodiment 2; including a fuel cell stack, a humidifier, an air compressor, a second humidity sensor installed on the inlet pipe of the air compressor, and a first humidity sensor installed on the air inlet pipe of the fuel cell stack; the air compressor is used to send compressed air into the humidifier, and the air humidified by the humidifier enters the fuel cell stack through the air inlet pipe of the fuel cell stack; the air discharged from the fuel cell stack enters the humidifier and is discharged through the humidifier; the humidifier is used to humidify the low-humidity air entering the fuel cell stack using the high-humidity air discharged from the fuel cell stack.

[0068] Example 4:

[0069] Based on the fuel cell described in Embodiment 3, this embodiment provides a new energy vehicle, which is equipped with the fuel cell described in Embodiment 3.

[0070] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for controlling cryogenic shutdown and purging of a fuel cell, characterized in that, include: In response to the control command to enter the shutdown purging procedure, the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack are collected and recorded. Calculate the rate of change of the absolute humidity of the pile based on the collected absolute humidity. Based on the ambient absolute humidity, the absolute humidity of the fuel cell, the rate of change of the absolute humidity of the fuel cell, and the given target ambient temperature, the purging time is determined according to the set fuel cell low-temperature shutdown purging logic based on the absolute humidity of the fuel cell. When the purging time reaches the predetermined purging time, the purging program is stopped so that the shutdown program can be entered. The step of determining the purging time according to the set fuel cell low-temperature shutdown purging logic based on the absolute humidity of the fuel cell stack includes: The time t1 when the absolute humidity of the fuel cell begins to decrease is taken as the purging time for shutting down the fuel cell at the target ambient temperature above 0°C. The time t2 when the rate of change of absolute humidity in the fuel cell increases to the first set value is taken as the purging time for the fuel cell to shut down in the target ambient temperature of 0 to -10℃. The time t3 when the rate of change of absolute humidity in the fuel cell reaches the maximum k0 is taken as the purging time for the fuel cell to be shut down in the target ambient temperature range of -10 to -20℃. The time t4 when the absolute humidity of the fuel cell is reduced to H2 is taken as the purging time for the fuel cell to be shut down in the target ambient temperature range of -20 to -25°C. The time t5 when the absolute humidity of the fuel cell is reduced to H3 is taken as the purging time for the fuel cell to be shut down at the target ambient temperature of less than -25°C. Methods for determining H2 include: H2 = (H1 - H0) × a% Where H2 is the absolute humidity of the infeed when the purging time is determined to be t4, H1 is the absolute humidity of the infeed collected at the start of the purging, H0 is the collected ambient absolute humidity, and a% is a set percentage change in the absolute humidity of the infeed. The methods for determining H3 include: H3 = (H1 - H0) × b% Where H3 is the absolute humidity of the infeed when the purging time is determined to be t5, and b% is another set percentage change in the absolute humidity of the infeed.

2. The fuel cell cryogenic shutdown purging control method according to claim 1, characterized in that, The method for determining the target ambient temperature includes: (1) The lowest temperature within the previously set time interval is taken as the target ambient temperature; (2) The target ambient temperature is the lowest ambient temperature predicted for the local future within a set time interval; (3) The target ambient temperature is the ambient temperature that is manually input.

3. The fuel cell cryogenic shutdown purging control method according to claim 1, characterized in that, It also includes the setting of the maximum purge protection time. When the purge time is greater than or equal to the setting of the maximum purge protection time, the purge time is replaced by the setting of the maximum purge protection time.

4. A fuel cell cryogenic shutdown purging control system, characterized in that, include: The absolute humidity acquisition module is used to collect and record the ambient absolute humidity and the absolute humidity of the air entering the fuel cell stack in response to the control command to enter the shutdown purging procedure. The calculation module is used to calculate the rate of change of the absolute humidity of the pile based on the collected absolute humidity of the pile. The purging time determination module is used to determine the purging time according to the set fuel cell low-temperature shutdown purging logic based on the ambient absolute humidity, the absolute humidity of the fuel cell, the rate of change of the absolute humidity of the fuel cell and the given target ambient temperature. The purging execution module is used to stop the purging program in response to the purging time reaching a certain purging time, so as to enter the shutdown program; The step of determining the purging time according to the set fuel cell low-temperature shutdown purging logic based on the absolute humidity of the fuel cell stack includes: The time t1 when the absolute humidity of the fuel cell begins to decrease is taken as the purging time for shutting down the fuel cell at the target ambient temperature above 0°C. The time t2 when the rate of change of absolute humidity in the fuel cell increases to the first set value is taken as the purging time for the fuel cell to shut down in the target ambient temperature of 0 to -10℃. The time t3 when the rate of change of absolute humidity in the fuel cell reaches the maximum k0 is taken as the purging time for the fuel cell to be shut down in the target ambient temperature range of -10 to -20℃. The time t4 when the absolute humidity of the fuel cell is reduced to H2 is taken as the purging time for the fuel cell to be shut down in the target ambient temperature range of -20 to -25°C. The time t5 when the absolute humidity of the fuel cell is reduced to H3 is taken as the purging time for the fuel cell to be shut down at the target ambient temperature of less than -25°C. Methods for determining H2 include: H2 = (H1 - H0) × a% Where H2 is the absolute humidity of the infeed when the purging time is determined to be t4, H1 is the absolute humidity of the infeed collected at the start of the purging, H0 is the collected ambient absolute humidity, and a% is a set percentage change in the absolute humidity of the infeed. The methods for determining H3 include: H3 = (H1 - H0) × b% Where H3 is the absolute humidity of the infeed when the purging time is determined to be t5, and b% is another set percentage change in the absolute humidity of the infeed.

5. A fuel cell, characterized in that, The fuel cell is equipped with the fuel cell low-temperature shutdown purging control system as described in claim 4.

6. The fuel cell according to claim 5, characterized in that, It includes a fuel cell stack, a humidifier, an air compressor, a second humidity sensor installed on the inlet pipe of the air compressor, and a first humidity sensor installed on the air inlet pipe of the fuel cell stack; The air compressor is used to send compressed air into the humidifier. The air humidified by the humidifier enters the fuel cell stack through the air inlet pipe of the fuel cell stack. The air discharged from the fuel cell stack enters the humidifier and is discharged through the humidifier. The humidifier is used to humidify the low-humidity air entering the fuel cell stack using the high-humidity air discharged from the fuel cell stack.

7. A new energy vehicle, characterized in that, The new energy vehicle is equipped with the fuel cell described in claim 5 or 6.

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