Test device and test system

Abstract

This application relates to a testing apparatus and system, including an AC / DC coupling power supply, a control module, and a detection module. The AC / DC coupling power supply is used to connect various types of power supply modules and the electrolytic cell under test. The control module is connected to the AC / DC coupling power supply and is used to control the AC / DC coupling power supply to convert the initial power supply signal output by at least one type of power supply module into AC / DC power, and then output a target power supply signal to the electrolytic cell under test. The AC / DC conversion includes at least one of AC to DC and DC to DC conversion. The detection module is used to collect test parameters of the electrolytic cell under test when it operates under the target power supply signal. This application can meet the testing needs for testing the durability of electrolytic cell materials under various power supply scenarios.

Description

Technical Field

[0001] This application relates to the field of electrolytic cell testing technology, and in particular to testing apparatus and testing systems. Background Technology

[0002] Hydrogen energy, as a clean, low-carbon, flexible, efficient, widely available, and diverse energy source, is an ideal and reliable energy carrier for large-scale replacement of fossil fuels. Hydrogen production technology through water electrolysis, especially hydrogen production through renewable energy power generation (i.e., "green electricity hydrogen production"), can achieve zero carbon emissions.

[0003] Because renewable energy power generation, represented by wind power (AC) and photovoltaic (DC), is volatile and intermittent, directly coupling renewable energy to produce hydrogen poses a huge challenge to the service life of the core materials of the electrolyzer.

[0004] Conventional testing equipment cannot perform durability tests on the core materials of electrolytic cells under various scenarios. Utility Model Content

[0005] Therefore, it is necessary to provide a testing device and a testing system to address the aforementioned technical problems.

[0006] In a first aspect, this application provides a testing apparatus, comprising:

[0007] AC / DC coupled power supply, used to connect various types of power supply modules and electrolytic cells under test;

[0008] A control module, connected to the AC / DC coupling power supply, is used to control the AC / DC coupling power supply to convert the initial power supply signal output by at least one type of power supply module into AC / DC power, and then output the target power supply signal to the electrolytic cell under test; the AC / DC conversion includes at least one of AC to DC and DC to DC.

[0009] The detection module is used to collect test parameters of the electrolytic cell under test when it is working under the action of the target power supply signal.

[0010] In one embodiment, the various types of power supply modules include grid and photovoltaic modules; the initial power supply signal includes grid power supply signal and / or photovoltaic power supply signal; the AC / DC coupled power supply includes:

[0011] An AC / DC conversion module, connected to the control module, is used to connect to the power grid and the electrolytic cell under test, respectively.

[0012] A DC-DC conversion module, connected to the control module, is used to connect the photovoltaic module and the electrolytic cell under test, respectively.

[0013] The control module is used to control the operation of the AC / DC conversion module and / or the DC conversion module, correspondingly causing the AC / DC conversion module to convert the grid power supply signal output by the grid into the target power supply signal, and / or causing the DC conversion module to convert the photovoltaic power supply signal output by the photovoltaic module into the target power supply signal.

[0014] In one embodiment, the test parameters include the concentration of oxygen in hydrogen and the concentration of hydrogen in oxygen; the detection module includes:

[0015] The gas-liquid processing module is used to separate the hydrogen-alkali mixture and the oxygen-alkali mixture generated by the electrolysis of the electrolytic cell under test, so as to separate hydrogen and alkali, and oxygen and alkali respectively.

[0016] The hydrogen oxygen analyzer is electrically connected to the gas-liquid processing module and is used to detect the concentration of oxygen in hydrogen.

[0017] An oxygen-hydrogen analyzer is electrically connected to the gas-liquid processing module and is used to detect the concentration of hydrogen in oxygen.

[0018] In one embodiment, the gas-liquid processing module includes:

[0019] Hydrogen alkaline solution channel, oxygen alkaline solution channel, hydrogen emission pipeline and oxygen emission pipeline;

[0020] A hydrogen-alkali solution separator, wherein the inlet of the hydrogen-alkali solution separator is connected to the hydrogen outlet of the electrolyzer via the hydrogen-alkali solution channel to separate the hydrogen-alkali solution mixture and discharge the hydrogen through the hydrogen emission pipe;

[0021] An oxygen-alkali solution separator is used to connect to the oxygen outlet of the electrolytic cell via the oxygen-alkali solution channel to separate the oxygen-alkali solution mixture and discharge oxygen via the oxygen discharge pipe.

[0022] In one embodiment, it further includes:

[0023] The first drying pipe is connected to the hydrogen emission pipe and the hydrogen oxygen analyzer, and is used to dry the hydrogen emitted by the gas-liquid treatment module so that the hydrogen oxygen analyzer can detect the concentration of oxygen in the dried hydrogen.

[0024] The second drying pipe is connected to the oxygen emission pipe and the oxygen-hydrogen analyzer, and is used to dry the oxygen emitted by the gas-liquid treatment module so that the oxygen-hydrogen analyzer can detect the concentration of hydrogen in the dried oxygen.

[0025] In one embodiment, it further includes:

[0026] An alkaline heat exchanger is provided, wherein the inlet of the alkaline heat exchanger is connected to the outlet pipelines of the hydrogen alkaline separator and the oxygen alkaline separator, and the alkaline heat exchanger is used to cool the alkaline solutions separated by the hydrogen alkaline separator and the oxygen alkaline separator under the action of the first condensate.

[0027] An alkaline solution filter is connected to the outlet of the alkaline solution heat exchanger and is used to remove impurities from the alkaline solution discharged from the alkaline solution heat exchanger.

[0028] An alkaline solution circulation pump is provided, with its inlet connected to the outlet of the alkaline solution filter. The two outlets of the alkaline solution circulation pump are respectively connected to the hydrogen-side alkaline solution inlet and the oxygen-side alkaline solution inlet of the electrolyzer via external alkaline solution transmission pipes, so as to introduce alkaline solution into the electrolyzer to be tested.

[0029] In one embodiment, it further includes:

[0030] The first condensate pipeline has one end connected to the condensate outlet of the alkaline heat exchanger, and is used to transmit the second condensate acting on the alkaline heat exchanger.

[0031] A chilled water system, wherein the inlet of the chilled water system is connected to the other end of the first condensate pipe, for converting the second condensate into the first condensate;

[0032] The second condensate pipe has its two ends connected to the outlet of the chiller and the condensate inlet of the alkali heat exchanger, respectively, for transmitting the first condensate to the alkali heat exchanger.

[0033] In one embodiment, it further includes:

[0034] Water tank;

[0035] A water supply pipeline is connected to the water tank and the gas-liquid treatment module to transmit water from the water tank to the gas-liquid treatment module.

[0036] In one embodiment, the test parameters include voltage data from multiple chambers in the electrolytic cell under test; the detection module includes:

[0037] A voltage acquisition module, connected to the control module, is used to acquire voltage data from multiple chambers in the electrolytic cell under test.

[0038] In one embodiment, the voltage acquisition module includes:

[0039] The voltage acquisition unit includes multiple acquisition channels for acquiring voltage data from multiple chambers in the electrolytic cell under test.

[0040] A communication unit, connected to the voltage acquisition unit, is used to establish a communication connection with the control module to transmit the voltage data acquired by the voltage acquisition unit to the control module.

[0041] Secondly, this application provides a testing system, including: a power supply module, at least one electrolytic cell under test, and at least one testing device as described above.

[0042] The aforementioned testing apparatus and system include an AC / DC coupling power supply, a control module, and a detection module. The AC / DC coupling power supply is used to connect various types of power supply modules and the electrolytic cell under test. The control module is connected to the AC / DC coupling power supply and is used to control the AC / DC coupling power supply to convert the initial power supply signal output from at least one type of power supply module into an AC / DC signal, and then output a target power supply signal to the electrolytic cell under test. The AC / DC conversion includes at least one of AC to DC and DC to DC. The detection module is used to collect test parameters of the electrolytic cell under test when it operates under the target power supply signal. This application can control the AC / DC coupling power supply to convert the initial power supply signal output from different types of power supply modules into a target power supply signal before supplying power to the electrolytic cell under test, such as AC to DC and / or DC to DC. Based on the test parameters collected by the detection module when the electrolytic cell under test operates under the corresponding target power supply signal, it can meet the testing requirements for testing the durability of electrolytic cell materials under various power supply scenarios. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is one of the structural schematic block diagrams of the testing device in one embodiment of this application;

[0045] Figure 2 This is a schematic block diagram of the AC / DC coupled power supply in one embodiment of this application;

[0046] Figure 3 This is one of the schematic block diagrams of the test module in one embodiment of this application;

[0047] Figure 4 This is a schematic block diagram of the gas-liquid processing module in one embodiment of this application;

[0048] Figure 5 This is a second schematic block diagram of the test device in one embodiment of this application;

[0049] Figure 6 This is the third schematic block diagram of the test device in one embodiment of this application;

[0050] Figure 7 This is the fourth schematic block diagram of the test device in one embodiment of this application;

[0051] Figure 8 This is a second schematic block diagram of the test module in one embodiment of this application.

[0052] Explanation of icon numbers:

[0053] 100: Testing device; 110: AC / DC coupling power supply; 111: AC / DC conversion module; 112: DC conversion module; 120: Control module; 130: Detection module; 131: Gas-liquid processing module; 1311: Hydrogen-alkali solution channel; 1312: Oxygen-alkali solution channel; 1313: Hydrogen emission pipeline; 1314: Oxygen emission pipeline; 1315: Hydrogen-alkali solution separator; 1316: Oxygen-alkali solution separator; 1 32: Hydrogen-oxygen analyzer; 133: Oxygen-hydrogen analyzer; 134: Voltage acquisition module; 140: Alkali heat exchanger; 150: Alkali filter; 160: Alkali circulation pump; 170: First condensate pipeline; 180: Chilled water system; 190: Second condensate pipeline; 1100: Water tank; 1200: Water supply pipeline; 200: Power supply module; 210: Power grid; 220: Photovoltaic module; 300: Electrolytic cell under test. Detailed Implementation

[0054] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] In one embodiment, see Figure 1 , attached Figure 1 This diagram illustrates one of the structural schematic block diagrams of a test apparatus 100 according to an embodiment of this application. The test apparatus 100 in this embodiment may include an AC / DC coupled power supply 110, a control module 120, and a detection module 130. The AC / DC coupled power supply 110 is used to connect to various types of power supply modules 200 (as shown in the attached diagram). Figure 1 The diagram shows power supply modules 200#1 to 200#n (where n is an integer greater than 1) and the electrolytic cell 300 under test; control module 120 is connected to AC / DC coupling power supply 110 and is used to control AC / DC coupling power supply 110 to convert the initial power supply signal output by at least one type of power supply module 200 into AC / DC power, and then output the target power supply signal to the electrolytic cell 300 under test; AC / DC conversion includes at least one of AC to DC and DC to DC; detection module 130 is used to collect test parameters of the electrolytic cell 300 under test when it is working under the action of the target power supply signal.

[0059] The AC / DC coupling power supply 110 is a power supply device capable of integrating, converting, and transmitting alternating current (AC) and direct current (DC). On one hand, the AC / DC coupling power supply 110 can convert AC to DC. On the other hand, it can directly output DC. That is, the AC / DC coupling power supply 110 can achieve separate AC / DC input and AC / DC coupled input, enabling the testing device 100 to perform durability tests on the materials of the electrolytic cell 300 under various operating conditions corresponding to different types of power supply modules 200. For example, the various types of power supply modules 200 may include photovoltaic modules 220, power grids 210, wind power, etc., and are not limited to these.

[0060] The control module 120 may include processor units such as microprocessors / digital signal processors and sensor units. The control module 120 can output corresponding control signals to control the AC / DC coupled power supply 110 to start working, thereby converting the initial power supply signal output by the corresponding type of power supply module 200 to output the target power supply signal.

[0061] The detection module 130 may include one or more modules capable of detecting electrical parameters characterizing the durability of the materials in the electrolytic cell 300 under test. Exemplarily, the materials in the electrolytic cell 300 under test may include electrodes and a diaphragm. For example, the durability of the electrodes in the electrolytic cell 300 under test can be characterized by voltage changes in the corresponding chambers within the electrolytic cell 300. The durability of the diaphragm in the electrolytic cell 300 under test can be characterized by the concentration of oxygen in the hydrogen gas released from the electrolytic cell 300 under test and / or the concentration of hydrogen in the oxygen gas. Therefore, correspondingly, the detection module 130 may include a hydrogen-oxygen analyzer 132 and / or an oxygen-hydrogen analyzer. This is not a limitation.

[0062] In this embodiment, the control module 120 controls the AC / DC coupled power supply 110 to convert the initial power supply signals output by different types of power supply modules 200 into target power supply signals before supplying power to the electrolytic cell 300 under test, such as AC to DC and / or DC to DC. Based on the test parameters collected by the detection module 130 when the electrolytic cell 300 under test is working under the corresponding target power supply signal, the test requirements for testing the durability of electrolytic cell materials under various power supply scenarios can be met.

[0063] In one embodiment, see Appendix Figure 2 , attached Figure 2 A schematic block diagram of the AC / DC coupled power supply 110 is shown. Various types of power supply modules 200 may include a power grid 210 and photovoltaic modules 220. The initial power supply signal may include a power supply signal from the power grid 210 and / or a photovoltaic power supply signal; the AC / DC coupled power supply 110 includes an AC / DC conversion module 111 and a DC / DC conversion module 112.

[0064] AC / DC conversion module 111 is used to connect the power grid 210 and the electrolytic cell under test 300 respectively; DC conversion module 112 is used to connect the photovoltaic module 220 and the electrolytic cell under test 300 respectively.

[0065] AC / DC conversion module 111 can convert alternating current (AC) to direct current (DC). DC conversion module 112 can convert DC voltage from one type to another. For example, under the control of control module 120, DC conversion module 112 can boost or buck the output voltage of photovoltaic module 220.

[0066] The control module 120 is connected to the AC / DC conversion module 111 and the DC conversion module 112 respectively, so as to control the operation of the AC / DC conversion module 111 and / or the DC conversion module 112, which respectively causes the AC / DC conversion module 111 to convert the power supply signal output by the power grid 210 into the target power supply signal, and / or causes the DC conversion module 112 to convert the photovoltaic power supply signal output by the photovoltaic module 220 into the target power supply signal.

[0067] In this embodiment, the AC / DC coupling power supply 110 includes an AC / DC conversion module 111 and a DC conversion module 112, which can convert the initial power supply signal output by the corresponding type of power supply module 200 under different test requirements, so as to meet the needs of testing the durability of the material of the electrolytic cell 300 under different working conditions.

[0068] It is understood that an electrolytic cell produces hydrogen and oxygen based on an electrolytic reaction. Therefore, when producing hydrogen and oxygen by electrolyzing an alkaline solution (such as sodium hydroxide or potassium hydroxide solution) in an electrolytic cell, a hydrogen-alkaline mixture and an oxygen-alkaline mixture are generated, respectively. To prevent the mixing of oxygen produced at the anode and hydrogen produced at the cathode during processes such as water electrolysis in the electrolytic cell, thus avoiding danger and improving the purity of the gas products, a diaphragm can be installed between the anode and cathode to isolate hydrogen and oxygen. Therefore, by testing the concentration of hydrogen in oxygen and / or the concentration of hydrogen in oxygen, the gas barrier properties of the diaphragm in the electrolytic cell 300 under test can be obtained. The lower the concentration of hydrogen in oxygen, the higher the oxygen purity and the better the gas barrier properties of the diaphragm; the lower the concentration of oxygen in hydrogen, the higher the hydrogen concentration and the better the gas barrier properties of the diaphragm. Exemplarily, in one embodiment, see the appendix... Figure 3 , attached Figure 3 This diagram illustrates one of the structural block diagrams of a test module according to an embodiment of this application. The detection module 130 may include a gas-liquid processing module 131 and a hydrogen-oxygen analyzer 132. Test parameters may include the concentration of oxygen in hydrogen and the concentration of hydrogen in oxygen.

[0069] The gas-liquid processing module 131 is used to separate the hydrogen-alkali mixture and the oxygen-alkali mixture generated by the electrolysis of the electrolytic cell 300, so as to separate hydrogen and alkali, as well as oxygen and alkali, respectively.

[0070] The hydrogen oxygen analyzer 132 is electrically connected to the gas-liquid processing module 131 and is used to detect the concentration of oxygen in hydrogen.

[0071] In one embodiment, the detection module 130 may further include an oxygen-hydrogen analyzer 133, which is electrically connected to the gas-liquid processing module 131 and is used to detect the concentration of hydrogen in oxygen.

[0072] In this embodiment, the gas and liquid are separated by the gas-liquid processing module 131 to obtain hydrogen and oxygen respectively. The concentration of oxygen in the hydrogen is detected by the hydrogen-oxygen analyzer 132, which reflects the gas barrier properties of one side of the diaphragm. Furthermore, the concentration of hydrogen in the oxygen is detected by the oxygen-hydrogen analyzer 133, which reflects the gas barrier properties of the other side of the diaphragm. Therefore, the testing device 100 in this embodiment can test the gas barrier properties of at least one side of the diaphragm in the electrolytic cell 300 under test. By combining the concentrations of oxygen in the hydrogen and hydrogen in the oxygen, the gas barrier properties of both sides of the diaphragm can be comprehensively detected.

[0073] In one embodiment, see Appendix Figure 4 , attached Figure 4 A schematic block diagram of the gas-liquid processing module 131 in one embodiment of this application is shown. The gas-liquid processing module 131 in this embodiment may include a hydrogen-alkali solution channel 1311, an oxygen-alkali solution channel 1312, a hydrogen emission pipe 1313, an oxygen emission pipe 1314, a hydrogen-alkali solution separator 1315, and an oxygen-alkali solution separator 1316. The inlet of the hydrogen-alkali solution separator 1315 is connected to the hydrogen outlet of the electrolyzer via the hydrogen-alkali solution channel 1311 to separate the hydrogen-alkali solution mixture, and the hydrogen is discharged through the hydrogen emission pipe 1313. The oxygen-alkali solution separator 1316 is connected to the oxygen outlet of the electrolyzer via the oxygen-alkali solution channel 1312 to separate the oxygen-alkali solution mixture, and the oxygen is discharged through the oxygen emission pipe 1314.

[0074] In this embodiment, the hydrogen-alkali solution channel 1311 is used to transport hydrogen-containing alkali solution. The oxygen detection channel is used to transport oxygen-containing alkali solution. The hydrogen-alkali solution separator 1315 is connected to the hydrogen-alkali solution channel 1311 and the hydrogen emission pipe 1313, and is used to receive hydrogen-containing alkali solution through the hydrogen-alkali solution channel 1311, separate the hydrogen-containing alkali solution, and discharge the separated hydrogen through the hydrogen emission pipe 1313. The oxygen-alkali solution separator 1316 is connected to the oxygen-alkali solution channel 1312 and the oxygen emission pipe 1314, respectively, and is used to receive oxygen-containing alkali solution through the oxygen-alkali solution channel 1312, separate the oxygen-containing alkali solution, and discharge the oxygen through the oxygen emission pipe 1314, thereby realizing the gas-liquid separation of the hydrogen-alkali solution mixture and the oxygen-alkali solution mixture generated by the electrolysis of the electrolytic cell 300 under test.

[0075] In one embodiment, the testing apparatus may further include a first drying pipe and a second drying pipe.

[0076] The first drying pipeline is connected to the hydrogen emission pipeline and the hydrogen oxygen analyzer, and is used to dry the hydrogen emitted by the gas-liquid treatment module so that the hydrogen oxygen analyzer can detect the concentration of oxygen in the dried hydrogen.

[0077] The second drying pipeline is connected to the oxygen emission pipeline and the oxygen-hydrogen analyzer, and is used to dry the oxygen emitted by the gas-liquid treatment module so that the oxygen-hydrogen analyzer can detect the concentration of hydrogen in the dried oxygen.

[0078] In this embodiment, before the hydrogen-oxygen analyzer and the oxygen-hydrogen analyzer perform detection, the hydrogen and oxygen emitted by the gas-liquid processing module are dried through the first drying pipe and the second drying pipe, respectively, thereby reducing the moisture in the hydrogen and oxygen and improving the detection accuracy of the hydrogen-oxygen analyzer and the oxygen-hydrogen analyzer.

[0079] In one embodiment, see Appendix 7, Appendix Figure 7 The fourth schematic block diagram of the test device 100 in one embodiment of this application is shown. The test device 100 in this embodiment may further include a water tank 1100 and a water supply pipeline 1200. The water supply pipeline 1200 is electrically connected to the water tank 1100 and the gas-liquid processing module 131, and is used to transfer water in the water tank 1100 to the gas-liquid processing module 131.

[0080] The water supply pipeline 1200 transmits water from the water tank 1100 to the gas-liquid processing module 131, maintaining the liquid level in the gas-liquid processing module 131 to balance the pressure difference on both sides and prevent hydrogen and oxygen from mixing. Additionally, it can replenish water to the electrolytic cell 300 under test.

[0081] In this embodiment, the testing device 100 also includes a water tank 1100 and a water supply pipeline 1200. The water in the water tank 1100 is transmitted to the gas-liquid processing module 131 through the water supply pipeline 1200, which can maintain the liquid level in the gas-liquid processing module 131, so that the testing device can work normally.

[0082] In one embodiment, see Appendix Figure 5 , attached Figure 5 The second schematic block diagram of the test apparatus 100 in one embodiment of this application is shown. The test apparatus 100 in this embodiment may further include an alkali heat exchanger 140, an alkali filter 150, and an alkali circulation pump 160.

[0083] The inlet of the alkali heat exchanger 140 is connected to the outlet pipes of the hydrogen alkali separator 1315 and the oxygen alkali separator 1316. The alkali heat exchanger 140 is used to cool the alkali separated by the hydrogen alkali separator 1315 and the oxygen alkali separator 1316 under the action of the first condensate.

[0084] The alkali filter 150 is electrically connected to the outlet of the alkali heat exchanger 140 and is used to remove impurities from the alkali discharged from the alkali heat exchanger 140.

[0085] The inlet of the alkali circulation pump 160 is connected to the outlet of the alkali filter 150. The two outlets of the alkali circulation pump 160 are connected to the hydrogen-side alkali inlet and the oxygen-side alkali inlet of the electrolyzer through external alkali transmission pipes, respectively, so as to introduce the alkali into the electrolyzer 300 to be tested.

[0086] In this embodiment, the electrolytic cell 300 under test generates heat during operation. Excessive temperature may cause the material in the electrolytic cell 300 to expand and deform, accelerating material aging and corrosion; excessively low temperature may affect the efficiency of the electrolysis reaction. The inlet of the alkali heat exchanger 140 is connected to the outlet pipes of the hydrogen alkali separator 1315 and the oxygen alkali separator 1316. The alkali heat exchanger 140 is used to cool the alkali solutions separated by the hydrogen alkali separator 1315 and the oxygen alkali separator 1316 under the action of the first condensate. This allows the temperature of the alkali solution to be controlled within a suitable range through heat exchange, ensuring that the material in the electrolytic cell 300 under test is in a stable temperature environment. This enables accurate assessment of the material's durability under specific temperature conditions and improves the detection accuracy of the testing device 100. The alkali solution may contain various impurities, such as metal particles, dust, and rust. These impurities can cause wear and blockage of the material in the electrolytic cell 300 under test during the alkali circulation process, accelerating material damage and interfering with accurate testing of material durability. The alkali filter 150 effectively intercepts and removes these impurities, ensuring the purity of the alkali solution. This allows the testing environment to better reflect the durability of the material under normal operating conditions, improving the detection accuracy of the testing device 100. During the electrolytic reaction in the electrolytic cell 300 under test, the alkali solution needs to continuously contact the electrodes, simultaneously carrying away the reaction products (oxygen and hydrogen). The alkali solution circulation pump 160 provides the power for the circulation of the alkali solution, ensuring that the alkali solution is evenly distributed within the electrolytic cell 300 under test. This allows the electrolytic reaction to proceed continuously and stably, thereby improving the accuracy of the testing device 100 in testing the durability of the material in the electrolytic cell 300 under test.

[0087] In one embodiment, see Appendix Figure 6 , attached Figure 6 The third schematic block diagram of the test apparatus 100 in one embodiment of this application is shown. The test apparatus 100 in this embodiment may further include a first condensate pipe 170, a chiller 180, and a second condensate pipe 190.

[0088] One end of the first condensate pipe 170 is connected to the condensate outlet of the alkali heat exchanger 140, and is used to transmit the second condensate that acts on the alkali heat exchanger 140.

[0089] The inlet of the chiller 180 is connected to the other end of the first condensate pipe 170 to convert the second condensate into the first condensate.

[0090] The two ends of the second condensate pipe 190 are connected to the outlet of the chiller 180 and the condensate inlet of the alkaline heat exchanger 140, respectively, for transmitting the first condensate to the alkaline heat exchanger 140.

[0091] The alkali heat exchanger 140 can adopt a shell-and-tube or plate structure. In a shell-and-tube alkali heat exchanger 140, the alkali solution flows in the tube side or shell side, while another medium (such as steam or condensate) flows in the other side. When the alkali solution temperature is higher than the required temperature, condensate can be introduced as a cooling medium. Due to the temperature difference between the alkali solution and the condensate, heat is transferred from the alkali solution to the condensate, lowering the alkali solution temperature. Conversely, when the alkali solution temperature is too low, a heating medium such as steam can be introduced. The steam releases heat and condenses within the heat exchanger, transferring heat to the alkali solution and raising its temperature. In a plate heat exchanger, the alkali solution and the hot and cold media flow between different plates, exchanging heat through the plates.

[0092] In this embodiment, the first condensate is transmitted to the alkali heat exchanger 140 through the second condensate pipe, so that the first condensate can effectively cool the alkali in the alkali heat exchanger 140. The second condensate, which has acted on the alkali heat exchanger 140, is transmitted through the first condensate pipe, so that the second condensate can flow back to the chiller 180. The chiller 180 freezes the second condensate and converts it into the first condensate, thus realizing the recycling of condensate.

[0093] In one embodiment, the test parameters include voltage data from multiple chambers in the electrolytic cell 300 under test; see appendix. Figure 8 , attached Figure 8 The second schematic block diagram of the test module in one embodiment of this application is shown. The detection module 130 in this embodiment may further include a voltage acquisition module 134. The voltage acquisition module 134 is connected to the control module 120 and is used to acquire voltage data of multiple chambers in the electrolytic cell 300 under test.

[0094] In this embodiment, voltage data of multiple chambers in the electrolytic cell 300 under test is collected by the voltage acquisition module 134. The voltage data of each chamber can reflect the durability of the electrode material in the corresponding chamber. For example, if the voltage of a chamber gradually increases, it indicates that the durability of the electrode in that chamber is deteriorating. If the voltage of a chamber is higher than a safe voltage threshold for a long time, it may damage the electrolytic cell 300 under test.

[0095] In one embodiment, the voltage acquisition module may include a voltage acquisition unit and a communication unit.

[0096] The voltage acquisition unit includes multiple acquisition channels, which are used to acquire voltage data from multiple chambers in the electrolytic cell under test.

[0097] The communication unit is connected to the voltage acquisition unit and is used to establish a communication connection with the control module so as to transmit the voltage data acquired by the voltage acquisition unit to the control module.

[0098] In this embodiment, the voltage data of multiple chambers in the electrolytic cell under test is collected by the voltage acquisition unit, and the voltage output of each chamber is transmitted to the control module through the communication unit, so that the control module can monitor the voltage changes in each chamber in a timely manner and obtain the durability changes of the electrode materials in each chamber in a timely manner.

[0099] In one embodiment, the control module can also be connected to the hydrogen-oxygen analyzer, the oxygen-hydrogen analyzer, the hydrogen-alkali separator, the oxygen-alkali separator, the alkali heat exchanger, the alkali filter, the alkali circulation pump, the chiller, the water tank, and the voltage acquisition unit respectively, to control the operation of the hydrogen-oxygen analyzer, the oxygen-hydrogen analyzer, the hydrogen-alkali separator, the oxygen-alkali separator, the alkali heat exchanger, the alkali filter, the alkali circulation pump, the chiller, the water tank, and the voltage acquisition unit respectively.

[0100] In one embodiment, this application also provides a testing system. The testing system in this embodiment includes a power supply module, at least one electrolytic cell under test, and at least one testing device as described in any of the above embodiments.

[0101] The number of electrolytic cells corresponds to the number of testing devices.

[0102] In this embodiment, each testing device can independently test an electrolytic cell under test. Through the testing system in this embodiment, it is possible to test a single electrolytic cell under test or to test multiple electrolytic cells under test in parallel, thus enabling flexible and rapid testing of the materials in the electrolytic cells under test.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A testing device, characterized in that, include: AC / DC coupled power supply, used to connect various types of power supply modules and electrolytic cells under test; A control module, connected to the AC / DC coupling power supply, is used to control the AC / DC coupling power supply to convert the initial power supply signal output by at least one type of power supply module into AC / DC power, and then output the target power supply signal to the electrolytic cell under test; the AC / DC conversion includes at least one of AC to DC and DC to DC. The detection module is used to collect test parameters of the electrolytic cell under test when it is working under the action of the target power supply signal.

2. The testing apparatus according to claim 1, characterized in that, The various types of power supply modules include grid power and photovoltaic modules; the initial power supply signal includes grid power supply signal and / or photovoltaic power supply signal; The AC / DC coupling power supply includes: An AC / DC conversion module, connected to the control module, is used to connect to the power grid and the electrolytic cell under test, respectively. A DC-DC conversion module, connected to the control module, is used to connect the photovoltaic module and the electrolytic cell under test, respectively. The control module is used to control the operation of the AC / DC conversion module and / or the DC conversion module, correspondingly causing the AC / DC conversion module to convert the grid power supply signal output by the grid into the target power supply signal, and / or causing the DC conversion module to convert the photovoltaic power supply signal output by the photovoltaic module into the target power supply signal.

3. The testing apparatus according to claim 1, characterized in that, The test parameters include the concentration of oxygen in hydrogen and the concentration of hydrogen in oxygen; the detection module includes: The gas-liquid processing module is used to separate the hydrogen-alkali mixture and the oxygen-alkali mixture generated by the electrolysis of the electrolytic cell under test, so as to separate hydrogen and alkali, and oxygen and alkali respectively. The hydrogen oxygen analyzer is electrically connected to the gas-liquid processing module and is used to detect the concentration of oxygen in hydrogen. An oxygen-hydrogen analyzer is electrically connected to the gas-liquid processing module and is used to detect the concentration of hydrogen in oxygen.

4. The testing apparatus according to claim 3, characterized in that, The gas-liquid processing module includes: Hydrogen alkaline solution channel, oxygen alkaline solution channel, hydrogen emission pipeline and oxygen emission pipeline; A hydrogen-alkali solution separator, wherein the inlet of the hydrogen-alkali solution separator is connected to the hydrogen outlet of the electrolyzer via the hydrogen-alkali solution channel to separate the hydrogen-alkali solution mixture and discharge the hydrogen through the hydrogen emission pipe; An oxygen-alkali solution separator is used to connect to the oxygen outlet of the electrolytic cell via the oxygen-alkali solution channel to separate the oxygen-alkali solution mixture and discharge oxygen via the oxygen discharge pipe.

5. The testing apparatus according to claim 4, characterized in that, Also includes: The first drying pipe is connected to the hydrogen emission pipe and the hydrogen oxygen analyzer, and is used to dry the hydrogen emitted by the gas-liquid treatment module so that the hydrogen oxygen analyzer can detect the concentration of oxygen in the dried hydrogen. The second drying pipe is connected to the oxygen emission pipe and the oxygen-hydrogen analyzer, and is used to dry the oxygen emitted by the gas-liquid treatment module so that the oxygen-hydrogen analyzer can detect the concentration of hydrogen in the dried oxygen.

6. The testing apparatus according to claim 4, characterized in that, Also includes: An alkaline heat exchanger is provided, wherein the inlet of the alkaline heat exchanger is connected to the outlet pipelines of the hydrogen alkaline separator and the oxygen alkaline separator, and the alkaline heat exchanger is used to cool the alkaline solutions separated by the hydrogen alkaline separator and the oxygen alkaline separator under the action of the first condensate. An alkaline solution filter is connected to the outlet of the alkaline solution heat exchanger and is used to remove impurities from the alkaline solution discharged from the alkaline solution heat exchanger. An alkaline solution circulation pump is provided, with its inlet connected to the outlet of the alkaline solution filter. The two outlets of the alkaline solution circulation pump are respectively connected to the hydrogen-side alkaline solution inlet and the oxygen-side alkaline solution inlet of the electrolyzer via external alkaline solution transmission pipes, so as to introduce alkaline solution into the electrolyzer to be tested.

7. The testing apparatus according to claim 6, characterized in that, Also includes: The first condensate pipeline has one end connected to the condensate outlet of the alkaline heat exchanger, and is used to transmit the second condensate acting on the alkaline heat exchanger. A chilled water system, wherein the inlet of the chilled water system is connected to the other end of the first condensate pipe, for converting the second condensate into the first condensate; The second condensate pipe has its two ends connected to the outlet of the chiller and the condensate inlet of the alkali heat exchanger, respectively, for transmitting the first condensate to the alkali heat exchanger.

8. The testing apparatus according to claim 3, characterized in that, Also includes: Water tank; A water supply pipeline is connected to the water tank and the gas-liquid treatment module to transmit water from the water tank to the gas-liquid treatment module.

9. The testing apparatus according to claim 1 or 3, characterized in that, The test parameters include voltage data of multiple chambers in the electrolytic cell under test; The detection module includes: A voltage acquisition module, connected to the control module, is used to acquire voltage data from multiple chambers in the electrolytic cell under test.

10. The testing apparatus according to claim 9, characterized in that, The voltage acquisition module includes: The voltage acquisition unit includes multiple acquisition channels for acquiring voltage data from multiple chambers in the electrolytic cell under test. A communication unit, connected to the voltage acquisition unit, is used to establish a communication connection with the control module to transmit the voltage data acquired by the voltage acquisition unit to the control module.

11. A testing system, characterized in that, include: The power supply module, at least one electrolytic cell under test, and at least one testing device as described in any one of claims 1 to 10.

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