PEM electrolytic bath test system and method

Abstract

The invention discloses a PEM electrolytic bath test system and method, and is applied to the technical field of water electrolysis hydrogen production, the PEM electrolytic bath test system is characterized in that a water outlet of a water storage and exhaust unit is connected with a deionized water inlet of a PEM electrolytic bath, and a gas inlet of the water storage and exhaust unit is connected with an oxygen outlet of the PEM electrolytic bath; the water supply test unit is arranged at the bottom of the water storage exhaust unit; a gas inlet of the gas water content testing unit is connected with a gas outlet of the water storage and gas exhaust unit; a gas inlet of the hydrogen output test unit is connected with a hydrogen outlet of the PEM electrolytic cell; the test data recording unit is respectively connected with the water supply test unit, the gas water-containing test unit and the hydrogen output test unit. Therefore, the operation time and the working current of the PEM electrolytic cell, the supply amount of the deionized water, the residual amount of the deionized water, and the water content and the hydrogen content in the mixed gas can be measured and recorded, so that the accurate measurement of the anode water seepage amount and the cathode hydrogen seepage amount can be realized.

Description

Technical Field

[0001] This application relates to the technical field of hydrogen production by water electrolysis, and particularly to a PEM electrolyzer test system and method. Background Art

[0002] A Proton Exchange Membrane (PEM) electrolyzer is the main equipment for hydrogen production by water electrolysis. Deionized water is filled in the water tank of the PEM electrolyzer. Under the action of direct current, water molecules undergo an oxidation reaction at the anode, losing electrons to generate oxygen and hydrogen ions. Subsequently, electrons are transferred to the cathode through an external circuit. Under the action of an electric field, hydrogen ions are conducted through the proton exchange membrane to the cathode and undergo a reduction reaction at the cathode, obtaining electrons to generate hydrogen, thereby realizing the hydrogen production function.

[0003] During the operation of a PEM electrolyzer, when there is a certain concentration difference or pressure difference between hydrogen and oxygen, hydrogen at the cathode will permeate to the anode, and water in the anode will also permeate to the cathode through the proton exchange membrane due to reasons such as electroosmotic drag or concentration difference diffusion. The measurement of the water permeation amount at the anode and the hydrogen permeation amount at the cathode of a PEM electrolyzer is crucial for the design and optimization of the PEM electrolyzer. However, the current PEM electrolyzer test system is difficult to accurately measure the water permeation amount at the anode and the hydrogen permeation amount at the cathode of a PEM electrolyzer. Summary of the Invention

[0004] This application provides a PEM electrolyzer test system and method to solve the problem that it is difficult to accurately measure the water permeation amount at the anode and the hydrogen permeation amount at the cathode of a PEM electrolyzer in the prior art. The technical solutions provided by this application are as follows:

[0005] On the one hand, this application provides a PEM electrolyzer test system, including a DC power supply module, a water storage and exhaust module, a water supply measurement module, a water content measurement module, a hydrogen production measurement module, and a measurement data recording module;

[0006] The water outlet of the water storage and exhaust module is connected to the deionized water inlet of the PEM electrolyzer, and the air inlet of the water storage and exhaust module is connected to the oxygen outlet of the PEM electrolyzer; the water storage and exhaust module is used to supply deionized water to the PEM electrolyzer;

[0007] The power supply interface of the DC power supply module is connected to the power supply interface of the PEM electrolyzer; the DC power supply module is used to provide a DC power supply for the PEM electrolyzer to start running, or to disconnect the DC power supply from the PEM electrolyzer to end its operation;

[0008] The water supply measurement module is arranged at the bottom of the water storage and exhaust module; the water supply measurement module is used to measure the deionized water supply amount of the water storage and exhaust module before the PEM electrolyzer starts running and the remaining deionized water amount of the water storage and exhaust module after the PEM electrolyzer ends its operation;

[0009] The air inlet of the water content measurement module is connected to the exhaust port of the water storage and exhaust module; the water content measurement module is used to measure the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer discharged by the water storage and exhaust module.

[0010] The air inlet of the hydrogen production measurement module is connected to the hydrogen outlet of the PEM electrolyzer; the hydrogen production measurement module is used to measure the hydrogen content generated at the cathode during the operation of the PEM electrolyzer.

[0011] The measurement data recording module is respectively connected to the water supply measurement module, the water content measurement module and the hydrogen production measurement module; the measurement data recording module is used to record the operation time and working current of the PEM electrolyzer, the deionized water supply amount, the remaining amount of deionized water, the water content and the hydrogen content.

[0012] In a possible implementation manner, the water storage and exhaust module includes a deionized water supply device, a water supply control valve, a water tank, a liquid level sensor, a first condenser and a water pump; the water outlet of the deionized water supply device is connected to the water inlet of the water supply control valve; the water outlet of the water supply control valve is connected to the water inlet of the water tank; the water outlet of the water tank is connected to the water inlet of the water pump; the water outlet of the water pump is connected to the deionized water inlet of the PEM electrolyzer; the air inlet of the first condenser is connected to the exhaust port of the water tank, and the exhaust port of the first condenser is connected to the air inlet of the water content measurement module; the liquid level sensor is arranged in the tank body of the water tank.

[0013] In a possible implementation manner, the water storage and exhaust module further includes a conductivity meter and a first drain valve; the conductivity meter is arranged in the tank body of the water tank; the first drain valve is arranged at the drain port of the water tank.

[0014] In a possible implementation manner, the water supply measurement module includes a weighing scale; the weighing scale is arranged at the bottom of the water tank and is connected to the measurement data recording module.

[0015] In a possible implementation manner, the water content measurement module includes a hygrometer and a first flow meter connected in sequence; the hygrometer and the first flow meter are respectively connected to the measurement data recording module.

[0016] In a possible implementation manner, the water content measurement module further includes a first exhaust valve; the first exhaust valve is arranged after the first flow meter.

[0017] In a possible implementation manner, the hydrogen production measurement module includes a gas-liquid separation device, an oxygen removal device, a dryer and a second flow meter connected in sequence; the second flow meter is connected to the measurement data recording module.

[0018] In a possible implementation, the gas-water separation device includes a second condenser and a second drain valve; the second drain valve is disposed at the drain outlet of the second condenser.

[0019] In a possible implementation, the hydrogen production measurement module further includes a second exhaust valve; the second exhaust valve is disposed after the second flowmeter.

[0020] In a possible implementation, the PEM electrolyzer test system provided by the present application further includes a first temperature sensor, a second temperature sensor, a first pressure sensor, and a second pressure sensor; the first temperature sensor and the first pressure sensor are disposed on the connecting pipeline between the water outlet of the water storage and exhaust module and the deionized water inlet of the PEM electrolyzer; the second temperature sensor and the second pressure sensor are disposed on the connecting pipeline between the air inlet of the water storage and exhaust module and the oxygen outlet of the PEM electrolyzer.

[0021] On the other hand, the present application provides a PEM electrolyzer test method, which is applied to the PEM electrolyzer test control device in the above PEM electrolyzer test control system, and includes:

[0022] When it is determined that the PEM electrolyzer meets the test start condition, control the water storage and exhaust module to supply deionized water to the PEM electrolyzer, so that the water tank and pipeline of the PEM electrolyzer are filled with deionized water;

[0023] Control the water supply measurement module to measure the supply amount of deionized water of the water storage and exhaust module before the PEM electrolyzer starts to operate, and transmit it to the measurement data recording module for recording;

[0024] Control the DC power supply module to provide DC power to the PEM electrolyzer, so that the PEM electrolyzer starts to operate;

[0025] Control the water content measurement module to continuously measure the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer, and transmit it to the measurement data recording module for recording; and control the hydrogen production measurement module to continuously measure the hydrogen content generated at the cathode during the operation of the PEM electrolyzer, and transmit it to the measurement data recording module for recording;

[0026] When it is determined that the PEM electrolyzer reaches the set operation time, control the DC power supply module to disconnect the DC power supply from the PEM electrolyzer, so that the PEM electrolyzer ends its operation;

[0027] Control the water supply measurement module to measure the remaining amount of deionized water of the water storage and exhaust module after the PEM electrolyzer ends its operation, and transmit it to the measurement data recording module for recording;

[0028] Control the measurement data recording module to record the operation time and working current of the PEM electrolyzer;

[0029] Obtain the hydrogen content, deionized water supply amount, deionized water remaining amount, water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode, operating time and working current of the PEM electrolyzer recorded by the measurement data recording module;

[0030] Calculate the amount of hydrogen infiltrated into the cathode based on the hydrogen content, operating time and working current of the PEM electrolyzer;

[0031] Calculate the amount of water infiltrated into the anode based on the deionized water supply amount, deionized water remaining amount, water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode, operating time and working current of the PEM electrolyzer.

[0032] The beneficial effects of this application are as follows:

[0033] This application measures the deionized water supply amount of the water storage and exhaust module before the PEM electrolyzer starts running and the deionized water remaining amount of the water storage and exhaust module after the PEM electrolyzer ends running through the water supply measurement module, measures the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode during the operation of the PEM electrolyzer discharged by the water storage and exhaust module through the water content measurement module, and records the operating time and working current of the PEM electrolyzer through the measurement data recording module, so as to realize the measurement and recording of the deionized water supply amount, deionized water remaining amount, water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode, operating time and working current of the PEM electrolyzer. Thus, based on the deionized water supply amount, deionized water remaining amount, water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode, operating time and working current of the PEM electrolyzer, the amount of water infiltrated from the anode to the cathode can be accurately measured. Moreover, by measuring the hydrogen content during the operation of the PEM electrolyzer through the hydrogen production measurement module and recording the operating time and working current of the PEM electrolyzer through the measurement data recording module, the measurement and recording of the hydrogen content, operating time and working current of the PEM electrolyzer can be realized. Thus, based on the hydrogen content, operating time and working current of the PEM electrolyzer, the amount of hydrogen infiltrated from the cathode to the anode can be accurately measured, and furthermore, accurate and effective data reference can be provided for the design and optimization of the PEM electrolyzer.

[0034] Other features and advantages of this application will be described in the subsequent specification, and part of them can be made obvious from the specification or understood by implementing this application. The objectives and other advantages of this application can be achieved and obtained through the structures specifically pointed out in the written specification, claims, and drawings. Description of the Drawings

[0035] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0036] Figure 1 is a schematic structural diagram of the composition of the PEM electrolyzer in the embodiment of the present application;

[0037] Figure 2 is a schematic structural diagram of a composition of the PEM electrolyzer test system in the embodiment of the present application;

[0038] Figure 3 is a schematic structural diagram of another composition of the PEM electrolyzer test system in the embodiment of the present application;

[0039] Figure 4 is a schematic general flow diagram of the PEM electrolyzer test control method in the embodiment of the present application;

[0040] Figure 5 is a schematic functional structure diagram of the PEM electrolyzer test control device in the embodiment of the present application;

[0041] Figure 6 is a schematic hardware structure diagram of the PEM electrolyzer test control device in the embodiment of the present application.

[0042] In the figure, 10 - water storage and exhaust module; 11 - deionized water supply device; 12 - water supply control valve; 13 - water tank; 14 - liquid level sensor; 15 - first condenser; 16 - water pump; 17 - conductivity meter; 18 - first drain valve; 20 - water supply measurement module; 21 - weighing instrument; 30 - water content measurement module; 31 - hygrometer; 32 - first flow meter; 33 - first exhaust valve; 40 - hydrogen production measurement module; 41 - gas-water separation device; 411 - second condenser; 412 - second drain valve; 42 - deoxidation device; 43 - dryer; 44 - second flow meter; 45 - second exhaust valve; 50 - measurement data recording module; 51 - recorder; 60 - DC power supply module; 71 - first temperature sensor; 72 - second temperature sensor; 73 - first pressure sensor; 74 - second pressure sensor. Detailed implementation manners

[0043] In order to make the purpose, technical solutions and beneficial effects of the present application clearer and more understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0044] The PEM electrolyzer is the main equipment for hydrogen production by water electrolysis. Refer to Figure 1 As shown, the PEM electrolyzer mainly consists of an anode end plate, a cathode end plate, an anode diffusion layer, a cathode diffusion layer, an anode catalyst layer, a cathode catalyst layer, and a proton exchange membrane. Among them, the anode diffusion layer, the anode catalyst layer, the proton exchange membrane, the cathode catalyst layer, and the cathode diffusion layer are the core sites for material transport and electrochemical reactions in the entire PEM electrolyzer. Under the action of direct current, water molecules in the water tank of the PEM electrolyzer undergo an oxidation reaction at the anode, losing electrons to generate oxygen and hydrogen ions. Subsequently, the electrons are conducted to the cathode through the external circuit. Under the action of the electric field, the hydrogen ions are conducted through the proton exchange membrane to the cathode and undergo a reduction reaction at the cathode, obtaining electrons to generate hydrogen, thus realizing the hydrogen production function. During this process, when there is a certain concentration difference or pressure difference between hydrogen and oxygen, hydrogen in the cathode will permeate to the anode, and water in the anode will also permeate to the cathode. The measurement of the water permeation amount in the anode and the hydrogen permeation amount in the cathode of the PEM electrolyzer is crucial for the design and optimization of the PEM electrolyzer. However, the current PEM electrolyzer test system is difficult to accurately measure the water permeation amount in the anode and the hydrogen permeation amount in the cathode of the PEM electrolyzer.

[0045] To this end, the embodiments of the present application provide a PEM electrolyzer test system. After the PEM electrolyzer test system supplies deionized water to the PEM electrolyzer through the water storage and exhaust module to fill the water tank and pipeline of the PEM electrolyzer with deionized water, the water supply measurement module measures the supply amount of deionized water of the water storage and exhaust module before the PEM electrolyzer starts to operate; subsequently, the DC power supply module provides a DC power supply for the PEM electrolyzer to start the operation of the PEM electrolyzer, and the water content measurement module measures the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer discharged by the water storage and exhaust module. At the same time, the hydrogen production measurement module measures the hydrogen content generated at the cathode during the operation of the PEM electrolyzer, and the measurement data recording module records the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer and the hydrogen content generated at the cathode; after that, after the PEM electrolyzer operates for a period of time, the DC power supply module disconnects the DC power supply for the PEM electrolyzer to end the operation of the PEM electrolyzer, and the water supply measurement module measures the remaining amount of deionized water of the water storage and exhaust module after the PEM electrolyzer ends the operation, and the measurement data recording module records the operation time and working current of the PEM electrolyzer. In this way, through the water supply measurement module, the water content measurement module, the hydrogen production measurement module and the measurement data recording module, the measurement and recording of the hydrogen content, the supply amount of deionized water, the remaining amount of deionized water, the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, the operation time and working current of the PEM electrolyzer can be realized. Therefore, based on the supply amount of deionized water, the remaining amount of deionized water, the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, the operation time and working current of the PEM electrolyzer, the water leakage amount at the anode can be accurately measured, and based on the hydrogen content, the operation time and working current of the PEM electrolyzer, the hydrogen infiltration amount at the cathode can be accurately measured, and thus accurate and effective data reference can be provided for the design and optimization of the PEM electrolyzer.

[0046] Next, the PEM electrolyzer test system provided by the embodiments of the present application will be described in detail. Refer to Figure 2 As shown, the PEM electrolyzer test system provided by the embodiments of the present application includes a water storage and exhaust module 10, a water supply measurement module 20, a water content measurement module 30, a hydrogen production measurement module 40, a measurement data recording module 50 and a DC power supply module 60;

[0047] The water outlet of the water storage and exhaust module 10 is connected to the deionized water inlet of the PEM electrolyzer, and the air inlet of the water storage and exhaust module 10 is connected to the oxygen outlet of the PEM electrolyzer; the water storage and exhaust module 10 is used to supply deionized water to the PEM electrolyzer;

[0048] The power supply interface of the DC power supply module 60 is connected to the power supply interface of the PEM electrolyzer; the DC power supply module 60 is used to provide DC power for the PEM electrolyzer to start operation, or to disconnect the DC power from the PEM electrolyzer to end its operation;

[0049] The water supply measurement module 20 is arranged at the bottom of the water storage and exhaust module 10; the water supply measurement module 20 is used to measure the supply amount of deionized water in the water storage and exhaust module 10 before the PEM electrolyzer starts operation and the remaining amount of deionized water in the water storage and exhaust module 10 after the PEM electrolyzer ends operation;

[0050] The air inlet of the water content measurement module 30 is connected to the exhaust port of the water storage and exhaust module 10; the water content measurement module 30 is used to measure the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer discharged by the water storage and exhaust module 10;

[0051] The air inlet of the hydrogen production measurement module 40 is connected to the hydrogen outlet of the PEM electrolyzer; the hydrogen production measurement module 40 is used to measure the hydrogen content generated at the cathode during the operation of the PEM electrolyzer;

[0052] The measurement data recording module 50 is respectively connected to the water supply measurement module 20, the water content measurement module 30 and the hydrogen production measurement module 40; the measurement data recording module 50 is used to record the operation time and working current of the PEM electrolyzer, the supply amount of deionized water, the remaining amount of deionized water, the water content and the hydrogen content.

[0053] In the embodiments of the present application, when testing a PEM electrolyzer, deionized water is first supplied to the PEM electrolyzer through the water storage and exhaust module 10. After the water tank and pipeline of the PEM electrolyzer are filled with deionized water, the deionized water supply amount of the water storage and exhaust module 10 before the PEM electrolyzer starts running is measured by the water supply measurement module 20, and the deionized water supply amount is recorded by the measurement data recording module 50. Subsequently, a DC power supply is provided to the PEM electrolyzer through the DC power supply module 60 to start electrolyzing water in the PEM electrolyzer, that is, to start the operation of the PEM electrolyzer. During the operation of the PEM electrolyzer, the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode of the PEM electrolyzer flows into the water storage and exhaust module 10 from the oxygen outlet of the PEM electrolyzer, and then flows into the water content measurement module 30 through the exhaust port of the water storage and exhaust module 10. The water content measurement module 30 continuously measures the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer, and records the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode by the measurement data recording module 50. At the same time, the mixed gas of hydrogen generated at the cathode and water vapor infiltrated at the anode of the PEM electrolyzer flows into the hydrogen production amount measurement module 40 through the hydrogen outlet of the PEM electrolyzer. The hydrogen production amount measurement module 40 continuously measures the hydrogen content generated at the cathode during the operation of the PEM electrolyzer, and records the hydrogen content by the measurement data recording module 50. After that, after the PEM electrolyzer operates for a period of time, the DC power supply to the PEM electrolyzer is disconnected through the DC power supply module 60 to end the operation of the PEM electrolyzer, and the remaining amount of deionized water in the water storage and exhaust module 10 after the PEM electrolyzer ends operation is measured by the water supply measurement module 20, and the remaining amount of deionized water is recorded by the measurement data recording module 50, and the operation time and working current of the PEM electrolyzer are recorded by the measurement data recording module 50.

[0054] In this way, by measuring and recording the deionized water supply amount, the remaining amount of deionized water, the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, the operation time and working current of the PEM electrolyzer, the water infiltration amount at the anode can be accurately measured based on the deionized water supply amount, the remaining amount of deionized water, the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, the operation time and working current of the PEM electrolyzer. At the same time, by measuring and recording the hydrogen content, the operation time and working current of the PEM electrolyzer, the hydrogen infiltration amount at the cathode can be accurately measured based on the hydrogen content, the operation time and working current of the PEM electrolyzer. Furthermore, accurate and effective data references can be provided for the design and optimization of the PEM electrolyzer.

[0055] In a possible implementation manner, refer to Figure 3As shown in the figure, the water storage and exhaust module 10 includes a deionized water supply device 11, a water supply control valve 12, a water tank 13, a liquid level sensor 14, a first condenser 15, and a water pump 16; the water outlet of the deionized water supply device 11 is connected to the water inlet of the water supply control valve 12; the water outlet of the water supply control valve 12 is connected to the water inlet of the water tank 13; the water outlet of the water tank 13 is connected to the water inlet of the water pump 16; the water outlet of the water pump 16 is connected to the deionized water inlet of the PEM electrolyzer; the air inlet of the first condenser 15 is connected to the exhaust port of the water tank 13, and the exhaust port of the first condenser 15 is connected to the air inlet of the water content measurement module 30; the liquid level sensor 14 is arranged inside the water tank 13.

[0056] In the embodiment of the present application, the water supply control valve 12 can be a manual valve or an electromagnetic valve; in order to make the water tank and pipeline of the PEM electrolyzer full of deionized water, when testing the PEM electrolyzer, the water supply control valve 12 can be opened first, so that the deionized water supply device 11 supplies deionized water to the water tank 13. After the deionized water in the water tank 13 reaches the set liquid level measured by the liquid level sensor 14, the water supply control valve 12 is closed and the water pump 16 is opened, so that the pipeline and the water tank 13 are full of deionized water; then, the deionized water supply amount of the water storage and exhaust module 10 before the PEM electrolyzer starts to operate is measured by the water supply measurement module 20; subsequently, direct current is supplied to the PEM electrolyzer through a DC power supply to make the PEM electrolyzer start electrolyzing water, that is, to make the PEM electrolyzer start to operate; during the operation of the PEM electrolyzer, the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode of the PEM electrolyzer flows from the oxygen outlet of the PEM electrolyzer into the water tank 13, and then flows into the first condenser 15 through the exhaust port of the water tank 13. The first condenser 15 condenses the water vapor in the mixed gas of oxygen and hydrogen and flows it back to the water tank 13. The mixed gas of oxygen and hydrogen flows into the water content measurement module 30 through the exhaust port of the first condenser 15, and the water content measurement module 30 continuously measures the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer; at the same time, the mixed gas of hydrogen generated at the cathode and water vapor infiltrated at the anode of the PEM electrolyzer flows into the hydrogen production measurement module 40 through the hydrogen outlet of the PEM electrolyzer, and the hydrogen production measurement module 40 continuously measures the hydrogen content during the operation of the PEM electrolyzer; at the same time, the operation time and working current of the PEM electrolyzer, the deionized water supply amount, the remaining amount of deionized water, the water content and hydrogen content in the mixed gas are recorded by the measurement data recording module 50.

[0057] In a possible implementation manner, refer to Figure 3 As shown in the figure, the water storage and exhaust module 10 further includes a conductivity meter 17 and a first drain valve 18; the conductivity meter 17 is arranged inside the water tank 13; the first drain valve 18 is arranged at the drain port of the water tank 13.

[0058] In the embodiment of the present application, the first drain valve 18 can be a manual valve or a solenoid valve; during the operation of the PEM electrolyzer, the conductivity meter 17 can measure the conductivity of the deionized water in the water tank 13. When the conductivity of the deionized water is greater than the set threshold, the PEM electrolyzer test can be interrupted, and the first drain valve 18 can be opened to drain water. After the deionized water in the water tank 13 and the pipeline is drained, the first drain valve 18 is closed, and the water supply control valve 12 is opened to supply deionized water to the PEM electrolyzer. After the water tank and the pipeline of the PEM electrolyzer are filled with deionized water, the PEM electrolyzer test is continued, thereby effectively avoiding the problem that the hydrogen production performance of the PEM electrolyzer is affected due to the too high conductivity of the deionized water in the water tank 13, and then affecting the accuracy of the PEM electrolyzer test results.

[0059] In a possible implementation manner, refer to Figure 3 As shown, the water supply measurement module 20 includes a weighing instrument 21; the weighing instrument 21 is arranged at the bottom of the water tank 13, and the weighing instrument 21 is connected to the measurement data recording module 50.

[0060] In the embodiment of the present application, the deionized water supply amount before the PEM electrolyzer starts to operate and the remaining amount of deionized water after the PEM electrolyzer ends its operation are measured by the weighing instrument 21 arranged at the bottom of the water tank 13, and are recorded by the measurement data recording module 50.

[0061] In a possible implementation manner, refer to Figure 3 As shown, the water content measurement module 30 includes a hygrometer 31 and a first flowmeter 32 connected in sequence; the hygrometer 31 and the first flowmeter 32 are respectively connected to the measurement data recording module 50.

[0062] In the embodiment of the present application, by monitoring the numerical changes before and after the hygrometer 31 and the gas flow measured by the first flowmeter 32, the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer can be accurately measured.

[0063] In a possible implementation manner, refer to Figure 3 As shown, the water content measurement module 30 further includes a first exhaust valve 33; the first exhaust valve 33 is arranged after the first flowmeter 32.

[0064] In the embodiment of the present application, the first exhaust valve 33 can be a manual valve or a solenoid valve; the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer can be directly discharged, or can be controlled to be discharged through the first exhaust valve 33 arranged after the first flowmeter 32. Specifically, the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer can be discharged to a subsequent treatment process system (such as an oxygen recovery system, etc.).

[0065] In a possible implementation, refer to Figure 3 As shown, the hydrogen production measurement module 40 includes a gas-liquid separator 41, a deoxygenation device 42, a dryer 43, and a second flowmeter 44 connected in sequence; the second flowmeter 44 is connected to the measurement data recording module 50.

[0066] In the embodiment of the present application, during the operation of the PEM electrolyzer, the mixed gas of hydrogen generated at the cathode and oxygen infiltrated from the anode is separated from the water vapor by the gas-liquid separator 41. Then, the oxygen in the mixed gas is removed by the deoxygenation device 42. Subsequently, the hydrogen enters the dryer 43 for drying and then enters the second flowmeter 44. The second flowmeter 44 continuously measures the actual hydrogen flow rate and records it through the measurement data recording module 50, so that the measurement and recording of the actual hydrogen flow rate of the hydrogen generated at the cathode during the operation of the PEM electrolyzer can be realized. Furthermore, based on the actual hydrogen flow rate recorded by the measurement data recording module 50 within the operation time range of the PEM electrolyzer, the hydrogen content during the operation of the PEM electrolyzer can be measured.

[0067] In a possible implementation, refer to Figure 3 As shown, the gas-liquid separator 41 includes a second condenser 411 and a second drain valve 412; the second drain valve 412 is arranged at the drain port of the second condenser 411.

[0068] In the embodiment of the present application, the second drain valve 412 can be a manual valve or a solenoid valve; during the operation of the PEM electrolyzer, the hydrogen generated at the cathode and the mixed gas of oxygen infiltrated from the anode are in the gas-liquid separator 41, and the water vapor in the mixed gas of hydrogen and oxygen is condensed by the second condenser 411, so as to separate the water vapor from the mixed gas of hydrogen and oxygen, and the liquid water condensed by the second condenser 411 is discharged through the second drain valve 412.

[0069] In a possible implementation, refer to Figure 3 As shown, the hydrogen production measurement module 40 further includes a second exhaust valve 45; the second exhaust valve 45 is arranged after the second flowmeter 44.

[0070] In the embodiment of the present application, the second exhaust valve 45 can be a manual valve or a solenoid valve; the hydrogen generated at the cathode during the operation of the PEM electrolyzer can be directly discharged or controlled to be discharged through the second exhaust valve 45 arranged after the second flowmeter 44. Specifically, the hydrogen generated at the cathode during the operation of the PEM electrolyzer can be discharged to the subsequent hydrogen production process system (such as a pressurized liquefaction system, etc.).

[0071] In a possible implementation, refer to Figure 3As shown in the figure, the PEM electrolyzer test system provided by the embodiment of the present application further includes a first temperature sensor 71, a second temperature sensor 72, a first pressure sensor 73, and a second pressure sensor 74; the first temperature sensor 71 and the first pressure sensor 73 are arranged on the connecting pipeline between the water outlet of the water storage and exhaust module 10 and the deionized water inlet of the PEM electrolyzer; the second temperature sensor 72 and the second pressure sensor 74 are arranged on the connecting pipeline between the air inlet of the water storage and exhaust module 10 and the oxygen outlet of the PEM electrolyzer; the first temperature sensor 71, the second temperature sensor 72, the first pressure sensor 73, and the second pressure sensor 74 are respectively connected to the measurement data recording module 50.

[0072] In the embodiment of the present application, the temperature and pressure of the deionized water inlet and the oxygen outlet of the PEM electrolyzer are measured by the first temperature sensor 71, the second temperature sensor 72, the first pressure sensor 73, and the second pressure sensor 74, and recorded by the measurement data recording module 50. Thus, the measurement and recording of the temperature and pressure of the deionized water inlet and the oxygen outlet during the operation of the PEM electrolyzer can be realized. Therefore, based on the temperature and pressure of the deionized water inlet and the oxygen outlet during the operation of the PEM electrolyzer, the hydrogen production rate of the PEM electrolyzer can be accurately measured.

[0073] In a possible implementation manner, refer to Figure 3 As shown in the figure, the measurement data recording module 50 provided by the embodiment of the present application includes a recorder 51.

[0074] In the embodiment of the present application, through the recorder 51, the real-time recording of the deionized water supply amount, the remaining amount of deionized water, the water content, the hydrogen content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, the operation time and the working current of the PEM electrolyzer can be realized during the operation of the PEM electrolyzer. Therefore, based on the deionized water supply amount, the remaining amount of deionized water, the water content in the mixed gas, the hydrogen content, the operation time and the working current recorded by the recorder 51, the water infiltration amount at the anode and the hydrogen infiltration amount at the cathode can be accurately measured. Furthermore, accurate and effective data references can be provided for the design and optimization of the PEM electrolyzer.

[0075] In a possible implementation manner, the water supply measurement module 20, the water content measurement module 30, and the hydrogen production measurement module 40 are respectively connected to the measurement data recording module 50 through signal lines. That is, in the embodiment of the present application, the weighing instrument 21, the hygrometer 31, the first flowmeter 32, and the second flowmeter 44 are respectively connected to the measurement data recording module 50 through signal lines.

[0076] Based on the above embodiments, an embodiment of the present application provides a PEM electrolyzer test control system, which includes the PEM electrolyzer test system provided by the embodiment of the present application, and a PEM electrolyzer test control device for controlling the PEM electrolyzer test system. In the embodiment of the present application, the water supply control valve 12, the water pump 16, the first drain valve 18, the second drain valve 412, the first exhaust valve 33, and the second exhaust valve 45 in the PEM electrolyzer test system are all solenoid valves, and the PEM electrolyzer test control device is electrically connected to the water supply control valve 12, the water pump 16, the first drain valve 18, the second drain valve 412, the first exhaust valve 33, and the second exhaust valve 45 in the PEM electrolyzer test system respectively; the PEM electrolyzer test control device is also communicatively connected to the liquid level sensor 14, the conductivity meter 17, and the recorder 51 in the PEM electrolyzer test system respectively.

[0077] Based on the above embodiments, an embodiment of the present application provides a PEM electrolyzer test control method, which is applied to the PEM electrolyzer test control device in the PEM electrolyzer test control system provided by the embodiment of the present application. Refer to Figure 4 As shown, the general process of the PEM electrolyzer test control method provided by the embodiment of the present application is as follows:

[0078] Step 401: When it is determined that the PEM electrolyzer meets the test start condition, control the water storage and exhaust module 10 to supply deionized water to the PEM electrolyzer so that the water tank and pipeline of the PEM electrolyzer are filled with deionized water.

[0079] In the embodiment of the present application, before testing the PEM electrolyzer, it is possible to first detect whether the first drain valve 18 and the second drain valve 412 of the PEM electrolyzer are in the closed state; when it is detected that the first drain valve 18 and the second drain valve 412 are not in the closed state, the first drain valve 18 and the second drain valve 412 can be controlled to close so that the PEM electrolyzer meets the test start condition; when it is detected that the first drain valve 18 and the second drain valve 412 are in the closed state, it can be directly determined that the PEM electrolyzer meets the test start condition; then control the water supply control valve 12 to open, so that the deionized water supply device 11 supplies deionized water to the water tank 13, and periodically obtain the current liquid level of the deionized water in the water tank 13 measured by the liquid level sensor 14. When it is determined that the current liquid level of the deionized water in the water tank 13 reaches the set liquid level, control the water supply control valve 12 to close, and further control the water pump 16 to open so that the pipeline and the water tank 13 of the PEM electrolyzer are filled with deionized water.

[0080] Step 402: Control the water supply measurement module 20 to measure the supply amount of deionized water of the water storage and exhaust module 10 before the PEM electrolyzer starts to operate, and transmit it to the measurement data recording module 50 for recording.

[0081] In the embodiment of the present application, after controlling the water pump 16 to open and filling the pipeline of the PEM electrolyzer and the water tank 13 with deionized water, the weighing instrument 21 arranged at the bottom of the water tank 13 can be controlled to measure the supply amount of deionized water before the PEM electrolyzer starts to operate and transmit it to the recorder 51 for recording, so as to calculate the anode water leakage amount subsequently.

[0082] Step 403: Control the DC power supply module 60 to provide DC power for the PEM electrolyzer so that the PEM electrolyzer starts to operate.

[0083] In the embodiment of the present application, after controlling the weighing instrument 21 arranged at the bottom of the water tank 13 to measure the supply amount of deionized water before the PEM electrolyzer starts to operate, the DC power supply module 60 can be controlled to provide DC power for the PEM electrolyzer so that the PEM electrolyzer starts to operate.

[0084] Step 404: Control the water content measurement module 30 to continuously measure the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer and transmit it to the measurement data recording module 50 for recording; and control the hydrogen production measurement module 40 to continuously measure the hydrogen content generated at the cathode during the operation of the PEM electrolyzer and transmit it to the measurement data recording module 50 for recording.

[0085] In the embodiment of the present application, during the operation of the PEM electrolyzer, the hygrometer 31 can be controlled to measure the humidity value of the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode of the PEM electrolyzer and the first flowmeter 32 can be controlled to measure the gas flow rate of the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode of the PEM electrolyzer and transmit them to the recorder 51 for recording, so as to calculate the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode subsequently; and control the second flowmeter 44 to measure the actual hydrogen flow rate generated at the cathode of the PEM electrolyzer and transmit it to the recorder 51 for recording, so as to calculate the hydrogen content generated at the cathode during the operation of the PEM electrolyzer subsequently.

[0086] Step 405: After determining that the PEM electrolyzer reaches the set operation time, control the DC power supply module 60 to disconnect the DC power supply for the PEM electrolyzer so that the PEM electrolyzer ends its operation.

[0087] In the embodiment of the present application, after determining that the PEM electrolyzer reaches the set operation time, the DC power supply module 60 can be controlled to disconnect the DC power supply for the PEM electrolyzer so that the PEM electrolyzer ends its operation.

[0088] Step 406: Control the water supply measurement module 20 to measure the remaining amount of deionized water in the water storage and exhaust module 10 after the PEM electrolyzer ends its operation and transmit it to the measurement data recording module 50 for recording.

[0089] In the embodiments of the present application, after the DC power supply module 60 is controlled to disconnect the DC power supply from the PEM electrolyzer, causing the PEM electrolyzer to end its operation, the weighing instrument 21 provided at the bottom of the water tank 13 can be controlled to measure the remaining amount of deionized water after the PEM electrolyzer ends its operation and transmit it to the recorder 51 for recording, so as to calculate the anode water seepage amount subsequently.

[0090] Step 407: Control the measurement data recording module 50 to record the operation time and working current of the PEM electrolyzer.

[0091] In the embodiments of the present application, in order to calculate the anode water seepage amount and the cathode hydrogen permeation amount, the recorder 51 can also be controlled to record the operation time and working current of the PEM electrolyzer.

[0092] Step 408: Obtain the hydrogen content, deionized water supply amount, remaining amount of deionized water, water content in the mixed gas of oxygen generated at the anode and hydrogen permeated into the cathode, operation time and working current of the PEM electrolyzer recorded by the measurement data recording module 50.

[0093] In the embodiments of the present application, various test data such as the hydrogen content, deionized water supply amount, remaining amount of deionized water, water content in the mixed gas of oxygen generated at the anode and hydrogen permeated into the cathode, operation time and working current of the PEM electrolyzer involved in the PEM electrolyzer test process can be recorded by the recorder 51.

[0094] Step 409: Calculate the cathode hydrogen permeation amount based on the hydrogen content, operation time and working current of the PEM electrolyzer.

[0095] In the embodiments of the present application, when calculating the cathode hydrogen permeation amount based on the hydrogen content, operation time and working current of the PEM electrolyzer, the actual hydrogen flow rate recorded by the recorder 51 within the operation time range of the PEM electrolyzer can be used to calculate the actual value L1 of the hydrogen content during the operation of the PEM electrolyzer, and the operation time and working current of the PEM electrolyzer recorded by the recorder 51 can be used to calculate the theoretical value L2 of the hydrogen content during the operation of the PEM electrolyzer. Furthermore, based on the actual value L1 of the hydrogen content and the theoretical value L2 of the hydrogen content, the cathode hydrogen permeation amount L3 of the PEM electrolyzer can be accurately measured, that is, L3 = L2 - L1.

[0096] Step 410: Calculate the anode water seepage amount based on the deionized water supply amount, remaining amount of deionized water, water content in the mixed gas of oxygen generated at the anode and hydrogen permeated into the cathode, operation time and working current of the PEM electrolyzer.

[0097] In the embodiment of the present application, when calculating the anode water leakage amount based on the deionized water supply amount, the remaining deionized water amount, the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode, the operation time and the working current of the PEM electrolyzer, the humidity value of the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode measured by the hygrometer 31 recorded by the recorder 51 and the gas flow rate of the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode measured by the first flowmeter 32 can be used to calculate the water content G2 of the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode, and the deionized water usage amount G3 during the operation of the PEM electrolyzer can be calculated based on the operation time and the working current of the PEM electrolyzer recorded by the recorder 51. Furthermore, based on the deionized water supply amount G1, the remaining deionized water amount G4, the deionized water usage amount G3 and the water content G2 of the mixed gas of oxygen generated at the anode and hydrogen infiltrated into the cathode recorded by the recorder 51, the anode water leakage amount G5 of the PEM electrolyzer can be accurately measured, that is, G5 = G1 - G2 - G3 - G4.

[0098] In addition, in the embodiment of the present application, during the operation of the PEM electrolyzer, the first temperature sensor 71, the second temperature sensor 72, the first pressure sensor 73 and the second pressure sensor 74 can also be controlled to measure the temperature and pressure of the deionized water inlet and the oxygen outlet of the PEM electrolyzer and transmit them to the recorder 51 for recording. After the operation of the PEM electrolyzer ends, the temperature and pressure of the deionized water inlet and the oxygen outlet during the operation of the PEM electrolyzer recorded by the recorder 51 can also be obtained, and the hydrogen production rate of the PEM electrolyzer can be determined based on the temperature and pressure of the deionized water inlet and the oxygen outlet during the operation of the PEM electrolyzer, so that the accurate measurement of the hydrogen production rate of the PEM electrolyzer can be realized.

[0099] Next, a brief introduction to the functional structure of the PEM electrolyzer test control device provided in the embodiment of the present application will be given. Refer to Figure 5 As shown, the PEM electrolyzer test control device 500 provided in the embodiment of the present application at least includes:

[0100] A water supply control unit 501, configured to control the water storage and exhaust module 10 to supply deionized water to the PEM electrolyzer when it is determined that the PEM electrolyzer meets the test start condition, so that the water tank and pipeline of the PEM electrolyzer are filled with deionized water;

[0101] A first measurement control unit 502, configured to control the water supply measurement module 20 to measure the deionized water supply amount of the water storage and exhaust module 10 before the PEM electrolyzer starts to operate and transmit it to the measurement data recording module 50 for recording;

[0102] The first power control unit 503 is used to control the DC power supply module 60 to provide DC power for the PEM electrolyzer, so that the PEM electrolyzer starts to operate;

[0103] The second measurement control unit 504 is used to control the water content measurement module 30 to continuously measure the water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode during the operation of the PEM electrolyzer, and transmit it to the measurement data recording module 50 for recording; and control the hydrogen production measurement module 40 to continuously measure the hydrogen content generated at the cathode during the operation of the PEM electrolyzer, and transmit it to the measurement data recording module 50 for recording;

[0104] The second power control unit 505 is used to determine that after the PEM electrolyzer reaches the set operation time, control the DC power supply module 60 to disconnect the DC power supply for the PEM electrolyzer, so that the PEM electrolyzer ends its operation;

[0105] The third measurement control unit 506 is used to control the water supply measurement module 20 to measure the remaining amount of deionized water in the water storage and exhaust module 10 after the PEM electrolyzer ends its operation, and transmit it to the measurement data recording module 50 for recording;

[0106] The fourth measurement control unit 507 is used to control the measurement data recording module 50 to record the operation time and working current of the PEM electrolyzer;

[0107] The data acquisition unit 508 is used to acquire the hydrogen content, deionized water supply amount, remaining amount of deionized water, water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, operation time and working current of the PEM electrolyzer recorded by the measurement data recording module 50;

[0108] The hydrogen infiltration amount calculation unit 509 is used to calculate the hydrogen infiltration amount at the cathode based on the hydrogen content, operation time and working current of the PEM electrolyzer;

[0109] The water infiltration amount calculation unit 510 is used to calculate the water infiltration amount at the anode based on the deionized water supply amount, remaining amount of deionized water, water content in the mixed gas of oxygen generated at the anode and hydrogen infiltrated at the cathode, operation time and working current of the PEM electrolyzer.

[0110] It should be noted that the principle of the PEM electrolyzer test control device 500 provided in the embodiments of the present application to solve the technical problems is similar to the PEM electrolyzer test control method provided in the embodiments of the present application. Therefore, the implementation of the PEM electrolyzer test control device 500 provided in the embodiments of the present application can refer to the implementation of the PEM electrolyzer test control method provided in the embodiments of the present application, and the repeated parts will not be described again.

[0111] The following briefly introduces the hardware structure of the PEM electrolyzer test control device 500 provided in the embodiments of the present application. Refer to Figure 6 As shown, the PEM electrolyzer test control device 500 provided in the embodiments of the present application at least includes a processor 601, a memory 602, and a computer program stored on the memory 602 and executable on the processor 601. When the processor 601 executes the computer program, it implements the PEM electrolyzer test control method provided in the present application.

[0112] The PEM electrolyzer test control device 500 provided in the embodiments of the present application may further include a bus 603 that connects different components (including the processor 601 and the memory 602). Among them, the bus 603 represents one or more of several types of bus structures, including a memory bus, a peripheral bus, a local bus, etc.

[0113] The memory 602 may include a readable storage medium in the form of a volatile memory, such as a random access memory (RAM) 6021 and / or a cache memory 6022, and may further include a read-only memory (ROM) 6023. The memory 602 may also include a program tool 6025 having a set (at least one) of program modules 6024. The program modules 6024 include, but are not limited to, an operating subsystem, one or more application programs, other program modules, and program data. Each or some combination of these examples may include the implementation of a network environment.

[0114] The processor 601 may be a processing element or a collective term for multiple processing elements. For example, the processor 601 may be a central processing unit (CPU), or one or more integrated circuits configured to implement the PEM electrolyzer test control method provided in the embodiments of the present application. Specifically, the processor 601 may be a general-purpose processor, including but not limited to a CPU, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0115] The PEM electrolyzer test control device 500 can communicate with one or more external devices 604 (such as a keyboard, remote control, etc.), and can also communicate with one or more devices (such as a mobile phone, computer, etc.) that enable users to interact with the PEM electrolyzer test control device 500, and / or communicate with a device (such as a router, modem, etc.) that enables the PEM electrolyzer test control device 500 to communicate with one or more other electronic devices. Such communication can be carried out through an input / output (I / O) interface 605. Moreover, the PEM electrolyzer test control device 500 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 606. As Figure 6 shown, the network adapter 606 communicates with other modules of the PEM electrolyzer test control device 500 through a bus 603. It should be understood that although Figure 6 not shown in the figure, other hardware and / or software modules can be used in combination with the PEM electrolyzer test control device 500, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, redundant arrays of independent disks (RAID) subsystems, tape drives, and data backup storage subsystems, etc.

[0116] It should be noted that Figure 6 the PEM electrolyzer test control device 500 shown is only an example and should not impose any limitations on the functions and usage scope of the embodiments of the present application.

[0117] In addition, the embodiments of the present application also provide a computer-readable storage medium, which stores computer instructions, and when the computer instructions are executed by a processor, the PEM electrolyzer test control method provided by the embodiments of the present application is implemented. Specifically, the computer instructions can be built-in or installed in the processor, so that the processor can implement the PEM electrolyzer test control method provided by the embodiments of the present application by executing the built-in or installed computer instructions.

[0118] In addition, the PEM electrolyzer test control method provided by the embodiments of the present application can also be implemented as a computer program product, which includes program code, and when the program code runs on a processor, the PEM electrolyzer test control method provided by the embodiments of the present application is implemented.

[0119] The computer program product provided by the embodiments of the present application may adopt one or more computer-readable storage media, and the computer-readable storage media may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the above. Specifically, more specific examples (non-exhaustive list) of the computer-readable storage media include an electrical connection having one or more wires, a portable disk, a hard disk, a RAM, a ROM, an erasable programmable read-only memory (EPROM), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0120] The computer program product provided by the embodiments of the present application may adopt a CD-ROM and include program codes, and may also run on a PEM electrolyzer test control device. However, the computer program product provided by the embodiments of the present application is not limited thereto. In the embodiments of the present application, the computer-readable storage media may be any tangible medium that contains or stores program codes, and the program codes may be used by or in combination with an instruction execution system, apparatus, or device.

[0121] It should be noted that the "first", "second", etc. mentioned in the embodiments of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0122] Although several units or subunits of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present application, the features and functions of the two or more units described above may be embodied in one unit. Conversely, the features and functions of one unit described above may be further divided and embodied by multiple units.

[0123] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0124] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A PEM electrolyzer testing system, characterized in that: It includes a DC power supply module, a water storage and exhaust module, a water supply measurement module, a water content measurement module, a hydrogen production measurement module and a measurement data recording module; The water outlet of the water storage and exhaust module is connected to the deionized water inlet of the PEM electrolyzer, and the air inlet of the water storage and exhaust module is connected to the oxygen outlet of the PEM electrolyzer; the water storage and exhaust module is used to supply deionized water to the PEM electrolyzer; The power supply interface of the DC power supply module is connected to the power supply interface of the PEM electrolyzer; the DC power supply module is used to provide a DC power supply to the PEM electrolyzer to start the operation of the PEM electrolyzer, or to disconnect the DC power supply to the PEM electrolyzer to stop the operation of the PEM electrolyzer; The water supply measurement module is arranged at the bottom of the water storage and exhaust module; the water supply measurement module is used to measure the deionized water supply of the water storage and exhaust module before the PEM electrolyzer starts to operate and the remaining amount of deionized water of the water storage and exhaust module after the PEM electrolyzer ends its operation; The air inlet of the water content measurement module is connected to the exhaust port of the water storage and exhaust module; the water content measurement module is used to measure the water content in the mixed gas of oxygen generated by the anode and hydrogen infiltrated by the cathode during the operation of the PEM electrolyzer discharged by the water storage and exhaust module; The air inlet of the hydrogen production measurement module is connected to the hydrogen outlet of the PEM electrolyzer; the hydrogen production measurement module is used to measure the hydrogen content generated by the cathode during the operation of the PEM electrolyzer; The measurement data recording module is connected to the water supply measurement module, the water content measurement module and the hydrogen production measurement module respectively; the measurement data recording module is used to record the operating time and working current of the PEM electrolyzer, the deionized water supply, the remaining deionized water, the water content and the hydrogen content.

2. The PEM electrolyzer testing system according to claim 1, characterized in that: The water storage and exhaust module includes a deionized water supply device, a water supply control valve, a water tank, a liquid level sensor, a first condenser and a water pump; the water outlet of the deionized water supply device is connected to the water inlet of the water supply control valve; the water outlet of the water supply control valve is connected to the water inlet of the water tank; the water outlet of the water tank is connected to the water inlet of the water pump; the water outlet of the water pump is connected to the deionized water inlet of the PEM electrolyzer; the air inlet of the first condenser is connected to the exhaust port of the water tank, and the exhaust port of the first condenser is connected to the air inlet of the water content measurement module; the liquid level sensor is arranged in the tank body of the water tank.

3. The PEM electrolyzer testing system according to claim 2, characterized in that: The water storage and exhaust module also includes a conductivity meter and a first drain valve; the conductivity meter is arranged in the tank body of the water tank; the first drain valve is arranged at the drain outlet of the water tank.

4. The PEM electrolyzer testing system according to claim 2, characterized in that: The water supply measurement module includes a weighing instrument; the weighing instrument is arranged at the bottom of the water tank, and the weighing instrument is connected to the measurement data recording module.

5. The PEM electrolyzer testing system according to claim 1, characterized in that: The moisture content measurement module comprises a hygrometer and a first flowmeter which are connected in sequence; the hygrometer and the first flowmeter are respectively connected to the measurement data recording module.

6. The PEM electrolyzer testing system according to claim 5, characterized in that: The water content measurement module further includes a first exhaust valve; the first exhaust valve is arranged after the first flow meter.

7. The PEM electrolyzer testing system according to any one of claims 1 to 6, characterized in that: The hydrogen production amount measurement module comprises a gas-water separation device, a deoxygenation device, a dryer and a second flow meter which are connected in sequence; the second flow meter is connected to the measurement data recording module.

8. The PEM electrolyzer testing system according to claim 7, characterized in that: The hydrogen production amount measurement module also includes a second exhaust valve; the second exhaust valve is arranged after the second flow meter.

9. The PEM electrolyzer testing system according to claim 1, characterized in that: It also includes a first temperature sensor, a second temperature sensor, a first pressure sensor and a second pressure sensor; the first temperature sensor and the first pressure sensor are arranged on the connecting pipeline between the water outlet of the water storage and exhaust module and the deionized water inlet of the PEM electrolyzer; the second temperature sensor and the second pressure sensor are arranged on the connecting pipeline between the air inlet of the water storage and exhaust module and the oxygen outlet of the PEM electrolyzer.

10. A PEM electrolyzer testing method, characterized in that: A PEM electrolyzer test control device used in a PEM electrolyzer test control system as claimed in any one of claims 1 to 9, comprising: When it is determined that the PEM electrolyzer meets the test start condition, controlling the water storage and exhaust module to supply deionized water to the PEM electrolyzer, so that the water tank and pipeline of the PEM electrolyzer are filled with deionized water; The water supply measurement module is controlled to measure the deionized water supply of the water storage and exhaust module before the PEM electrolyzer starts to operate, and transmits the deionized water supply to the measurement data recording module for recording; Controlling the DC power supply module to provide DC power to the PEM electrolyzer so that the PEM electrolyzer starts to operate; Control the water content measurement module to continuously measure the water content in the mixed gas of the oxygen generated by the anode and the hydrogen infiltrated by the cathode during the operation of the PEM electrolyzer, and transmit it to the measurement data recording module for recording; and control the hydrogen production measurement module to continuously measure the hydrogen content generated by the cathode during the operation of the PEM electrolyzer, and transmit it to the measurement data recording module for recording; After determining that the PEM electrolyzer reaches a set operating time, controlling the DC power supply module to disconnect the DC power supply for the PEM electrolyzer, so that the PEM electrolyzer ends operation; Controlling the water supply measurement module to measure the remaining amount of deionized water in the water storage and exhaust module after the PEM electrolyzer ends operation, and transmitting the amount to the measurement data recording module for recording; Controlling the measurement data recording module to record the operating time and operating current of the PEM electrolyzer; Obtaining the hydrogen content, the deionized water supply, the deionized water remaining amount, the water content in the mixed gas of the oxygen generated by the anode and the hydrogen infiltrated by the cathode, the operating time and the operating current of the PEM electrolyzer recorded by the measurement data recording module; Calculating the cathode hydrogen permeation amount based on the hydrogen content, the operating time and the operating current of the PEM electrolyzer; The anode water seepage amount is calculated based on the deionized water supply amount, the deionized water remaining amount, the water content in the mixed gas of the oxygen generated at the anode and the hydrogen permeated from the cathode, the operating time and the operating current of the PEM electrolyzer.

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