Single cell test system of multi-channel high-temperature proton exchange membrane fuel cell

Abstract

The utility model relates to a single cell test system of a multi-channel high-temperature proton exchange membrane fuel cell, and belongs to the field of high-temperature proton exchange membrane fuel cell performance evaluation equipment. The test system comprises a plurality of test channels, the test channels are arranged in parallel, and each test channel comprises a gas supply module, an electronic load module, an electrochemical impedance module, an alarm monitoring module and an integrated control module. According to the single-cell test system of the multi-channel high-temperature proton exchange membrane fuel cell, the function of simultaneously carrying out single-cell performance test on multiple groups of fuel cells under different test conditions can be realized, and the efficiency is improved; the automation degree is high, the functions of automatic gas flow rate switching, automatic load changing, automatic data recording and the like can be achieved, one-key operation is achieved, and manual guarding is not needed.

Description

Technical Field

[0001] This application belongs to the field of high-temperature proton exchange membrane fuel cell performance evaluation equipment, specifically relating to a single-cell testing system for a multi-channel high-temperature proton exchange membrane fuel cell. Background Technology

[0002] Currently, hydrogen energy, as a clean energy source, is one of the most promising new energy sources, and hydrogen power generation is the most effective way to utilize hydrogen energy. Proton exchange membrane fuel cells (PEMFCs) are a common technology for hydrogen power generation. Universities, research institutes, and enterprises are investing in the research of high-temperature PEMFCs and promoting their commercial application. Performance testing of fuel cells is fundamental to fuel cell development; however, current fuel cell testing systems are mainly designed for specific fuel cells, and most commercially available single-cell PEMFC testing systems are single-channel, unable to simultaneously test multiple fuel cell units. Utility Model Content

[0003] This application provides a single-cell testing system for a multi-channel high-temperature proton exchange membrane fuel cell, which enables intelligent simultaneous and independent performance testing of single cells from multiple fuel cells, improving testing efficiency, saving time, and shortening the development cycle of fuel cells. It is particularly suitable for single-cell performance testing of high-temperature proton exchange membrane fuel cells.

[0004] To achieve the above objectives, this application adopts the following technical solution.

[0005] In a first aspect, this application provides a single-cell testing system for a multi-channel high-temperature proton exchange membrane fuel cell. The testing system includes multiple testing channels arranged in parallel (or concurrently), wherein each testing channel includes the following modules:

[0006] The gas supply module, including an air supply module, a hydrogen supply module, and a nitrogen supply module, is used to control the flow rate and pressure of air (or oxygen), hydrogen, and nitrogen in the high-temperature proton exchange membrane fuel cell, respectively.

[0007] The thermal management module includes an electric heating device and an electric heating control, which are used to control the output power of the electric heating rod to control the temperature of the high-temperature proton exchange membrane fuel cell.

[0008] An electronic load module is used to control the discharge of a high-temperature proton exchange membrane fuel cell and to evaluate the performance of the high-temperature proton exchange membrane fuel cell.

[0009] Electrochemical impedance spectroscopy module is used to obtain the electrochemical impedance spectrum of high-temperature proton exchange membrane fuel cells;

[0010] The alarm monitoring module is used to issue alarms for abnormal parameters occurring during the testing of high-temperature proton exchange membrane fuel cells and to provide protective measures for the high-temperature proton exchange membrane fuel cells; and

[0011] An integrated control module, including a PLC controller, a display screen (e.g., an LCD screen), host computer software, and integrated electrical components, is used for system control, data acquisition, analysis and processing, alarm protection, and wireless communication of high-temperature proton exchange membrane fuel cells.

[0012] In this application, the single-cell testing system for the multi-channel high-temperature proton exchange membrane fuel cell can be configured with the number of test channels selected according to actual needs. The minimum number of test channels is two, and a larger number can be selected as needed, such as eight, sixteen, or thirty-two, depending on the usage requirements and equipment size. The gas supply, temperature control, and discharge testing of each channel can be performed independently without interference. The operating time is unlimited, supporting continuous operation for 24 hours.

[0013] As an alternative implementation, the single cell includes a membrane electrode, a graphite plate, and a clamp.

[0014] As an optional implementation, the voltage of the high-temperature proton exchange membrane fuel cell single cell is ≤1.2V (e.g., 0.3V, 0.5V, 0.8V or 1.0V).

[0015] As an optional implementation, the current of the high-temperature proton exchange membrane fuel cell single cell is 0 to 200A (e.g., 50A, 100A, 120A, 150A or 180A).

[0016] As an optional implementation, the operating temperature of the high-temperature proton exchange membrane fuel cell single cell is 100–200°C (e.g., 120°C, 140°C, 160°C, or 180°C).

[0017] As an optional implementation, the membrane electrode area of ​​the single cell of the high-temperature proton exchange membrane fuel cell is 10–200 mm². 2 (For example, 20mm) 2 50mm 2 100mm 2 150mm 2 Or 180mm 2 ).

[0018] As an alternative implementation, the single cell is formed by fixing a single film electrode between two graphite plates using a clamp.

[0019] As an optional implementation, the clamp is made of aluminum alloy.

[0020] As an optional implementation, the clamp is wrapped with insulating cotton on the outside.

[0021] In this application, the clamp serves two purposes in the single cell: fixing and heat storage; the graphite plate serves to conduct electricity and distribute gas.

[0022] As an optional implementation, the gas supply module includes an air path, a hydrogen path, and a nitrogen path, with the hydrogen path providing anode gas, the air path providing cathode gas, and the nitrogen path providing purge gas.

[0023] As an optional implementation, the air path, hydrogen path, and nitrogen path all include a solenoid valve, a ball valve, a mass flow meter, and a check valve.

[0024] As an optional implementation, the nitrogen path is connected to and converges with the hydrogen path to provide a hydrogen-rich mixture.

[0025] As an optional embodiment, the electric heating device includes an electric heating rod for heating a single cell of a high-temperature proton exchange membrane fuel cell, so that the high-temperature proton exchange membrane fuel cell reaches a target temperature. Optionally, the target temperature is 100-200°C (e.g., 120°C, 140°C, 150°C, 160°C, 180°C, or 190°C).

[0026] In this application, the electric heating rod is disposed inside the single battery, for example, inside the clamp. Due to the good thermal conductivity of the aluminum alloy material used in the clamp, the clamp can uniformly transfer heat to the graphite plate and the membrane electrode.

[0027] The thermal management module is used to heat up the high-temperature proton exchange membrane fuel cell during the startup phase. The electric heating rod is located inside the fixture. During heating, heat is transferred from the electric heating rod to the fixture, and then to the graphite plate and membrane electrode, keeping the temperature of the high-temperature proton exchange membrane fuel cell stable within the normal range.

[0028] As an optional implementation, the electric heating control includes a temperature sensor; the temperature sensor detects the temperature of the high-temperature proton exchange membrane fuel cell single cell, and the electric heating control controls the electric heating device through an integrated control module based on the detected temperature to achieve temperature control of the high-temperature proton exchange membrane fuel cell single cell.

[0029] As an alternative implementation, the temperature sensor is disposed on one side of the graphite plate near the membrane electrode and is used to measure the temperature of the membrane electrode.

[0030] As an optional implementation, the electronic load module includes an electronic load meter.

[0031] In this application, after setting the discharge parameters (including current or voltage, gas flow rate, and discharge time) for the corresponding fuel cell channel on the host computer, testing can begin. The integrated control module will automatically adjust the load and record data according to the set parameters. This enables functions such as polarization curve testing, membrane electrode performance testing, and lifespan testing. Each channel's corresponding electronic load can operate independently, recording test data separately, and can be started and stopped at any time without interference, achieving the effect of multi-channel fuel cell testing.

[0032] As an optional implementation, the discharge in the electronic load module includes two modes: constant current discharge and constant voltage discharge.

[0033] As an optional implementation, in the electronic load module, the voltage testing accuracy of a single battery reaches 0.0001V; the current testing accuracy reaches 0.0001A.

[0034] As an optional implementation, the alarm monitoring module has four protection measures: environmental hydrogen concentration monitoring, voltage monitoring, gas pressure monitoring, and battery temperature monitoring.

[0035] For example, an alarm mechanism is triggered when the hydrogen concentration in the environment is greater than 1000 ppm (the setting range can be modified as needed), and a self-protection mechanism is triggered when it is greater than 1%, which means stopping the discharge, shutting off hydrogen and air, and starting nitrogen purging.

[0036] The voltage is detected by an electronic load. When the detected voltage exceeds the set range (e.g., 0.5–1.2V, which can be modified as needed), the alarm monitoring module will automatically trigger the alarm mechanism and activate self-protection measures. Specifically, an alarm prompt will automatically pop up on the display screen and computer, the alarm indicator light will illuminate, and the system will automatically stop discharging and purge with nitrogen.

[0037] When the gas pressure exceeds the set range (e.g., 0.2-0.3 MPa, the set range can be modified as needed), the system will also automatically trigger the alarm mechanism and activate self-protection measures.

[0038] The battery operating temperature should be maintained at the set value (for example, the normal operating temperature of a fuel cell is 160°C). If the temperature cannot be stabilized, the alarm monitoring mechanism will be automatically triggered and the protection mechanism will be activated.

[0039] As an optional implementation, the wireless communication enables remote control operation of the high-temperature proton exchange membrane fuel cell via mobile phone.

[0040] As an optional embodiment, the operating temperature of the high-temperature proton exchange membrane fuel cell is 100–200°C (e.g., 120°C, 140°C, 150°C, 160°C, 180°C, or 190°C).

[0041] In this application, the integrated control module includes parameter setting functions; the parameters are controlled through host computer software or can be set on the device display screen.

[0042] Secondly, this application also provides a single-cell testing method for a multi-channel high-temperature proton exchange membrane fuel cell, which uses the aforementioned single-cell testing system for the multi-channel high-temperature proton exchange membrane fuel cell. The testing method includes the following steps:

[0043] 1) In the test system, select one of the test channels to assemble the membrane electrode, graphite plate and fixture, connect the single cell, air path, hydrogen path and nitrogen path of the high temperature proton exchange membrane fuel cell to be tested to the test system, connect the electrode clamps to the cathode and anode of the single cell respectively, and place the temperature sensor and electric heating device (e.g. electric heating rod) in the corresponding positions.

[0044] 2) Open the nitrogen solenoid valve, set the mass flow meter parameters to make the nitrogen flow rate reach the applicable value, and purge the hydrogen and air paths of the high-temperature proton exchange membrane fuel cell. After purging is completed, close the nitrogen solenoid valve.

[0045] 3) While purging in step 2), the electric heating device is turned on to heat the single cell of the high-temperature proton exchange membrane fuel cell, so that the temperature of the high-temperature proton exchange membrane fuel cell reaches the set value.

[0046] 4) Enter the test parameters into the host computer software, and then click Start Test;

[0047] 5) The discharge performance of the high-temperature proton exchange membrane fuel cell is tested by an electronic load tester. During the discharge test, the system will automatically adjust the gas flow rates of hydrogen and air (or oxygen) to the target value according to the set value, and then discharge and automatically record the data.

[0048] As an optional implementation, in step 4), the test parameters include gradient discharge voltage or current, gradient discharge time, gradient gas flow rate, membrane electrode area, current density, and gas metering ratio.

[0049] As an optional implementation, in step 5), during the discharge period, the discharge current starts from a small current and gradually increases to a stable level for testing.

[0050] As an optional implementation, step 5) further includes: monitoring the internal resistance of the single cell by impedance.

[0051] As an optional implementation, the single-battery testing method further includes: an integrated control module in the testing system controlling other modules in the testing system, collecting and analyzing data, and providing alarm protection and wireless communication.

[0052] In this application, the above technical solutions can be freely combined to form new technical solutions, provided that they do not conflict with each other.

[0053] The technical solution of this application has the following beneficial technical effects compared with the prior art:

[0054] (1) The single-cell testing system for multi-channel high-temperature proton exchange membrane fuel cells provided in this application can realize the function of simultaneously performing single-cell performance testing on multiple fuel cells under different test conditions, thereby improving efficiency;

[0055] (2) The single cell test system of the multi-channel high-temperature proton exchange membrane fuel cell provided in this application has a high degree of automation. It can realize functions such as automatic switching of gas flow rate, automatic load change, and automatic data recording. It can be operated with one click and does not require manual supervision.

[0056] (3) The single cell test system for the multi-channel high-temperature proton exchange membrane fuel cell provided in this application can be used for fuel cell testing, in addition to the pure hydrogen test mode, or the mixed gas test mode in which nitrogen and hydrogen are mixed in any proportion.

[0057] (4) The single-cell test system for multi-channel high-temperature proton exchange membrane fuel cells provided in this application uses an electric heating rod to heat the fuel cell under test. The temperature range is 100-200℃, and the temperature can be precisely controlled. It is especially suitable for single-cell performance testing of high-temperature proton exchange membrane fuel cells.

[0058] (5) The single-cell testing system for the multi-channel high-temperature proton exchange membrane fuel cell provided in this application is suitable for membrane electrode areas of 10–200 mm². 2 Single-cell performance testing of high-temperature proton exchange membrane fuel cells;

[0059] (6) The single-cell test system for the multi-channel high-temperature proton exchange membrane fuel cell provided in this application has four protection measures: ambient hydrogen concentration, gas pressure, temperature and voltage. When the measured value exceeds the set value, the platform will give an alarm and cut off the power and gas supply, which is safe and reliable. Attached Figure Description

[0060] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0061] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a schematic diagram of the electrical control structure of a single-cell test system for a multi-channel high-temperature proton exchange membrane fuel cell according to this application;

[0063] Figure 2 This is a schematic diagram of the gas path of a multi-channel high-temperature proton exchange membrane fuel cell single-cell test system according to this application. Detailed Implementation

[0064] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0065] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this application can be purchased from the market or prepared by existing methods.

[0066] Example 1

[0067] A multi-channel high-temperature proton exchange membrane fuel cell single-cell testing system is provided for testing the performance of single cells in a high-temperature proton exchange membrane fuel cell. The testing system includes multiple test channels arranged in parallel, enabling independent and simultaneous performance testing of multiple single cells without interference. Each test channel includes, for example, […]. Figure 1 The six modules shown are: gas supply module, thermal management module, electronic load module, electrochemical impedance spectroscopy module, alarm control module, and integrated control module. The structure and function of the single cell and each module of the high-temperature proton exchange membrane fuel cell under test are described in detail below.

[0068] (1) The high-temperature proton exchange membrane fuel cell single cell to be tested includes a membrane electrode assembly (MEA), graphite plates, and a clamp. A single MEA is fixed between two graphite plates using the clamp to form a single cell. Its operating voltage is ≤1.2V, current range is 0~200A, operating temperature is 100~200℃, and the MEA area is 10~200mm². 2 The clamp is made of aluminum alloy and wrapped with insulation cotton on the outside. In the single cell, the clamp serves two purposes: fixing the cell in place and storing heat. In the single cell, the graphite plate serves to conduct electricity and distribute gas.

[0069] (2) The gas supply module includes an air supply submodule, a hydrogen supply submodule and a nitrogen supply submodule, which are used to control the flow rate and pressure of air (or oxygen), hydrogen and nitrogen in the high-temperature proton exchange membrane fuel cell, respectively. Figure 2 A schematic diagram of the gas path for a single-cell test system of a multi-channel high-temperature proton exchange membrane fuel cell is shown.

[0070] like Figure 2 As shown, the gas supply module includes an air path, a hydrogen path, and a nitrogen path. The hydrogen path provides the anode gas for the single cell, the air path provides the cathode gas, and the nitrogen path provides the purge gas. Each of the air, hydrogen, and nitrogen paths includes a solenoid valve, a ball valve, a mass flow meter, and a check valve. When the single cell requires a hydrogen-rich mixture, the solenoid valve is controlled to connect the nitrogen and hydrogen paths, converging the nitrogen gas into the hydrogen path to provide the single cell with a hydrogen-rich mixture.

[0071] (3) The thermal management module includes an electric heating device and an electric heating control, which are used to control the output power of the electric heating device to control the temperature of the high-temperature proton exchange membrane fuel cell.

[0072] The electric heating device uses an electric heating rod, which is installed inside the clamp of the single cell to heat the high-temperature proton exchange membrane fuel cell single cell, so that the high-temperature proton exchange membrane fuel cell reaches the target operating temperature (e.g., 160°C).

[0073] The electric heating control includes a temperature sensor positioned on one side of the graphite plate near the membrane electrode assembly (MEA) to measure the MEA temperature. Based on the detected temperature, the electric heating control uses an integrated control module to control the electric heating device, thereby controlling the temperature of the high-temperature proton exchange membrane fuel cell cell.

[0074] During the startup phase, the thermal management module heats the fuel cell by using an electric heating rod located inside the clamp of the single cell. The heat is then transferred to the clamp, and then to the graphite plate and membrane electrode assembly, thereby raising the temperature of the high-temperature proton exchange membrane fuel cell. By controlling the electric heating rod, the temperature of the high-temperature proton exchange membrane fuel cell is stabilized within the normal operating range.

[0075] (4) The electronic load module includes an electronic load instrument, which is used to control the discharge of the high-temperature proton exchange membrane fuel cell and evaluate the performance of the high-temperature proton exchange membrane fuel cell.

[0076] Specifically, after setting the discharge parameters (including current or voltage, gas flow rate, and discharge time) for the corresponding fuel cell channel on the host computer, the performance of a single cell is tested. The integrated control module automatically adjusts the load and records the data according to the set parameters. This electronic load module includes constant current discharge and constant voltage discharge modes, enabling functions such as polarization curve testing, membrane electrode performance testing, and lifespan testing. Each channel's electronic load can operate independently, recording test data separately, and can be started and stopped at any time without interference, achieving the effect of multi-channel testing of fuel cells.

[0077] (5) Electrochemical impedance module, used to obtain the electrochemical impedance spectrum of high-temperature proton exchange membrane fuel cell; the internal resistance of a single cell can be calculated through electrochemical impedance.

[0078] (6) Alarm monitoring module, which has four protection measures: environmental hydrogen concentration monitoring, voltage monitoring, gas pressure monitoring and battery temperature monitoring. It is used to alarm abnormal parameters that occur during the testing of high-temperature proton exchange membrane fuel cells and to provide protection measures for high-temperature proton exchange membrane fuel cells.

[0079] (7) An integrated control module, including a PLC controller, a display screen (e.g., an LCD screen), host computer software, and integrated electrical components, is used for system control, data acquisition, analysis and processing, alarm protection, and wireless communication of the high-temperature proton exchange membrane fuel cell. For example, wireless communication enables remote monitoring and control of the high-temperature proton exchange membrane fuel cell via mobile phone. The integrated control module includes parameter setting functions; parameter control is achieved through host computer software or on the device display screen.

[0080] In this embodiment, the single-cell testing system for the multi-channel high-temperature proton exchange membrane fuel cell can be configured with the number of test channels selected according to actual needs, for example, 8, 16, or 32. The gas supply, temperature control, and discharge testing of each channel can be performed independently without interference, and the operating time is unlimited, supporting continuous operation for 24 hours. This multi-channel high-temperature proton exchange membrane fuel cell single-cell testing system is suitable for performance testing of high-temperature proton exchange membrane fuel cell single cells, especially for performance testing of high-temperature proton exchange membrane fuel cell single cells operating at 100–200°C.

[0081] Example 2

[0082] A single-cell testing method for a multi-channel high-temperature proton exchange membrane fuel cell is provided, using the single-cell testing system for the multi-channel high-temperature proton exchange membrane fuel cell provided in Example 1, for testing a membrane electrode area of ​​165 mm². 2 The performance of a single cell of a high-temperature proton exchange membrane fuel cell was tested, including the following steps:

[0083] Step S1: In the test system, select a test channel to assemble the membrane electrode, graphite plate and fixture, connect the single cell, air path, hydrogen path and nitrogen path of the high-temperature proton exchange membrane fuel cell to be tested to the test system, connect the electrode clamps to the cathode and anode of the single cell respectively, and place the temperature sensor and electric heating rod in the corresponding positions.

[0084] Step S2: Open the nitrogen solenoid valve, set the mass flow meter parameter to 100 mL / min to make the nitrogen flow rate reach this value, purge the hydrogen and air paths of the high-temperature proton exchange membrane fuel cell, and close the nitrogen solenoid valve after the purging is completed.

[0085] Step S3: While purging in step S2, the electric heating device is turned on to heat the single cell of the high-temperature proton exchange membrane fuel cell, so that the temperature of the high-temperature proton exchange membrane fuel cell reaches 160°C.

[0086] Step S4: Input the test parameters into the host computer software, including gradient discharge voltage or current, gradient discharge time, gradient gas flow rate, membrane electrode area, current density, gas metering ratio, etc., and then click Start Test;

[0087] Step S5: The discharge performance of the high-temperature proton exchange membrane fuel cell is tested using an electronic load tester. During the discharge test, the system automatically adjusts the flow rates of hydrogen and air (or oxygen) to the target values ​​according to the set values, then discharges and automatically records the data. During the discharge, the discharge current starts from a small current and gradually increases to a stable level for testing. In addition, the internal resistance of a single cell is monitored by impedance matching.

[0088] In this embodiment, a testing system is used to test the operation of a single cell of the fuel cell. The integrated control module in the testing system controls other modules in the testing system, collects and analyzes data, and provides alarm protection and wireless communication. For example, the integrated control module enables remote control of the operation of the high-temperature proton exchange membrane fuel cell via wireless communication using a mobile phone. When any of the monitoring results of hydrogen concentration monitoring, single cell voltage monitoring, reaction gas pressure monitoring, single cell temperature monitoring, and electrical output power monitoring are abnormal, the alarm control module will issue an alarm indicating the abnormality. In the case of severe abnormality, the alarm control module will cut off the power supply and gas supply to ensure the safe and stable operation of the high-temperature proton exchange membrane fuel cell.

[0089] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein. In this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise expressly defined. The terms "install," "connect," "link," and "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0090] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0091] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0092] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A multi-channel high temperature proton exchange membrane fuel cell single cell test system, characterized by, The test system comprises a plurality of test channels arranged side by side, wherein each test channel comprises the following modules: a gas supply module comprising an air supply module, a hydrogen supply module and a nitrogen supply module for controlling the flow and pressure of air, hydrogen and nitrogen in the high-temperature proton exchange membrane fuel cell respectively; a thermal management module comprising an electric heating device and an electric heating control for controlling the output power of the electric heating rod to control the temperature of the high-temperature proton exchange membrane fuel cell; an electronic load module for controlling the discharge of the high-temperature proton exchange membrane fuel cell and evaluating the performance of the high-temperature proton exchange membrane fuel cell; an electrochemical impedance module for obtaining the electrochemical impedance spectrum of the high-temperature proton exchange membrane fuel cell; an alarm monitoring module for alarming abnormal parameters occurring during the test of the high-temperature proton exchange membrane fuel cell and providing protection measures for the high-temperature proton exchange membrane fuel cell; and an integrated control module comprising a PLC controller, a display screen, upper computer software and integrated electrical components for system control, data acquisition, analysis and processing, alarm protection and wireless communication of the high-temperature proton exchange membrane fuel cell. The single cell comprises a membrane electrode, a graphite plate and a clamp; the working temperature of the high-temperature proton exchange membrane fuel cell single cell is 100-200℃.

2. The single cell test system of the multi-channel high-temperature proton exchange membrane fuel cell according to claim 1, wherein the voltage of the high-temperature proton exchange membrane fuel cell single cell is ≤1.2 V; or / and the current of the high-temperature proton exchange membrane fuel cell single cell is 0-200 A.

3. The single cell test system of the multi-channel high-temperature proton exchange membrane fuel cell according to claim 1, wherein The membrane electrode area of the high-temperature proton exchange membrane fuel cell single cell is 10-200 mm 2 .

4. The multi-pass high temperature proton exchange membrane fuel cell single cell test system of any one of claims 1-3, wherein, the gas supply module comprises an air path, a hydrogen path and a nitrogen path, the hydrogen path provides anode gas, the air path provides cathode gas, and the nitrogen path provides purge gas; the air path, the hydrogen path and the nitrogen path each comprise a solenoid valve, a ball valve, a mass flow meter and a check valve; the nitrogen path communicates with the hydrogen path and converges in the hydrogen path to provide hydrogen-rich mixed gas.

5. The multi-pass high temperature proton exchange membrane fuel cell single cell test system of any one of claims 1-3, wherein, The electric heating device comprises an electric heating rod for heating the high-temperature proton exchange membrane fuel cell single cell to make the high-temperature proton exchange membrane fuel cell reach a target temperature; The electric heating control comprises a temperature sensor; the temperature sensor is arranged on one side of the graphite plate close to the membrane electrode for measuring the temperature of the membrane electrode.

6. The single cell test system of the multi-channel high-temperature proton exchange membrane fuel cell according to any one of claims 1-3, wherein In the electronic load module, the electronic load module comprises an electronic load instrument.

7. The single cell test system of the multi-channel high-temperature proton exchange membrane fuel cell according to any one of claims 1-3, wherein In the electronic load module, the discharge comprises two modes of constant current discharge and constant voltage discharge.

8. The single cell test system of the multi-channel high-temperature proton exchange membrane fuel cell according to claim 7, wherein The voltage test precision of the single cell in the electronic load module reaches 0.0001 V; the current test precision reaches 0.0001 A.

9. The multi-pass high temperature proton exchange membrane fuel cell single cell test system of any one of claims 1-3, wherein, The alarm monitoring module has four protection measures of environment hydrogen concentration monitoring, voltage monitoring, gas pressure monitoring and battery temperature monitoring.

10. The multi-pass high temperature proton exchange membrane fuel cell single cell test system of any one of claims 1-3, wherein, The wireless communication can realize the mobile phone remote control operation of the proton exchange membrane fuel cell.

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