An automated soc stack test system

Abstract

The utility model discloses a kind of SOC electric pile test systems, for the electrochemical test of SOC electric pile discharging or electrolysis and the detection of carbon deposit in test pipeline, the SOC electric pile is placed in heating furnace;First pressure sensor is arranged on SOC electric pile anode gas inlet pipeline, third pressure sensor is arranged on anode gas outlet pipeline, for detecting the pressure change on SOC electric pile anode inlet and outlet pipeline;Second pressure sensor is arranged on SOC electric pile cathode gas inlet pipeline, fourth pressure sensor is arranged on cathode gas outlet pipeline, for detecting the pressure change on SOC electric pile cathode inlet and outlet pipeline;Gas chromatograph is connected on the SOC electric pile anode gas inlet pipeline or anode gas outlet pipeline, for detecting SOC electric pile anode gas inlet or gas outlet gas composition.This scheme detects pipeline pressure and gas composition simultaneously, monitors the carbon deposit condition of detection system, improves the carbon deposit reaction sensitivity of system.

Description

Technical Field

[0001] This utility model relates to the field of solid-state fuel cell testing technology, and more specifically, to an automated SOC stack testing system. Background Technology

[0002] Solid oxide batteries (SOCs) have the advantage of being able to use hydrocarbons such as CH4 and CO as fuels, but they also involve the cracking of hydrocarbons such as CH4 and the disproportionation reaction of CO: CH4 → C + 2H2.

[0003] The reaction 2CO→C+CO2 also leads to carbon buildup. When these fuels are used for fuel cell stack performance testing, the resulting carbon buildup gradually clogs the anode pipes, sometimes causing complete blockage. This increases the pressure difference between the electrodes, and in severe cases, prevents fuel gas flow. This will cause serious damage to the fuel cell stack and the entire testing system. Furthermore, severe carbon buildup typically requires complete replacement of the inlet or outlet pipes, which is extremely inconvenient for integrated, long-term automated testing equipment.

[0004] Therefore, to enhance the reliability and long-term stability of automated testing systems, effective carbon deposit detection methods and treatment measures are needed. Utility Model Content

[0005] This invention provides an automated SOC (Solar Charge) stack testing system that can effectively detect and address carbon buildup within the system.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A SOC fuel cell stack testing system is used to detect carbon deposits in the inlet and outlet gas pipelines of a SOC fuel cell stack, wherein the SOC fuel cell stack is placed in a heating furnace.

[0008] A first pressure sensor is installed on the anode inlet pipe of the SOC stack, and a third pressure sensor is installed on the anode outlet pipe, for detecting pressure changes on the anode inlet and outlet pipes of the SOC stack.

[0009] A second pressure sensor is installed on the cathode inlet pipe of the SOC stack, and a fourth pressure sensor is installed on the cathode outlet pipe, for detecting pressure changes on the cathode inlet and outlet pipes of the SOC stack.

[0010] A gas chromatograph is connected to the anode inlet pipe, anode outlet pipe, or cathode outlet pipe of the SOC fuel cell stack to detect the composition of the inlet or outlet gas of the SOC fuel cell stack.

[0011] As a further improvement, a first gas decarbonization filter is also provided on the anode inlet pipe of the SOC stack; and / or

[0012] A second gas decarbonization filter is also installed on the anode outlet pipe of the SOC stack;

[0013] The gas filtered by the first gas decarbonization filter and / or the second gas decarbonization filter enters the gas chromatograph.

[0014] As a further improvement, the first pressure sensor is located on the outlet side of the first gas decarbonization filter; and / or

[0015] The third pressure sensor is located on the inlet side of the second gas decarbonization filter.

[0016] As a further improvement, the anode gas inlet pipe of the SOC stack is also connected to a water vapor pipeline via a first three-way valve, which is located on the inlet side of the first gas decarbonization filter.

[0017] As a further improvement, the anode inlet of the SOC stack is provided with at least one air inlet pipe, on which a gas filter, a solenoid valve, a check valve, and a mass flow controller are sequentially arranged along the air inlet direction before converging to a heating and vaporization device; and / or

[0018] The cathode inlet pipe of the SOC stack is sequentially equipped with a gas filter, a solenoid valve, a check valve, a mass flow controller, and a heating and vaporization device along the inlet direction.

[0019] As a further improvement, the heating vaporization device on the anode inlet pipe of the SOC stack is a first heating vaporization device, which is located on the inlet side of the first three-way valve.

[0020] As a further improvement, a heat exchanger, a water-gas separator, a back pressure valve, and a solenoid valve are sequentially installed along the outlet direction on the anode outlet pipe of the SOC stack; and / or

[0021] The cathode outlet pipe of the SOC stack is equipped with a heat exchanger, a water-gas separator, a back pressure valve, and a solenoid valve in sequence along the outlet direction.

[0022] As a further improvement, the second gas decarbonization filter is located on the inlet side of the heat exchanger on the anode outlet pipe of the SOC stack.

[0023] As a further improvement, a first temperature sensor is installed on the anode inlet pipe of the SOC stack, and a third temperature sensor is installed on the anode outlet pipe; and / or

[0024] A second temperature sensor is installed on the cathode inlet pipe of the SOC stack, and a fourth temperature sensor is installed on the cathode outlet pipe.

[0025] As a further improvement, a constant flow pump is also installed on the steam pipeline, and the gas chromatograph, pressure sensor, temperature sensor and constant flow pump are all connected to the host computer through an electrical control system.

[0026] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0027] In this scheme, while detecting the pressure of the anode inlet, anode outlet, cathode inlet, and cathode outlet pipelines, the gas composition in the anode inlet and outlet pipelines is also analyzed simultaneously. If any deviation occurs, the host computer will react promptly to remove carbon deposits. By simultaneously detecting pipeline pressure and gas composition, the carbon deposit situation of the detection system is monitored, improving the system's sensitivity to carbon deposits. Attached Figure Description

[0028] Figure 1 A schematic diagram of an automated SOC testing system for preventing carbon buildup.

[0029] Label Explanation:

[0030] 100. Host computer; 200. Electrical control system; 300. Gas chromatograph; 400. Pressure bar; 500. Electrochemical integrated testing equipment; 600. Heating furnace;

[0031] 101. First gas filter; 102. Second gas filter; 103. Third gas filter; 104. Fourth gas filter; 105. Fifth gas filter; 106. Sixth gas filter;

[0032] 201. First solenoid valve; 202. Second solenoid valve; 203. Third solenoid valve; 204. Fourth solenoid valve; 205. Fifth solenoid valve; 206. Sixth solenoid valve; 207. Seventh solenoid valve; 208. Eighth solenoid valve; 209. Ninth solenoid valve; 2010. Tenth solenoid valve;

[0033] 301. First check valve; 302. Second check valve; 303. Third check valve; 304. Fourth check valve; 305. Fifth check valve; 306. Sixth check valve; 307. Seventh check valve;

[0034] 401. First mass flow controller; 402. Second mass flow controller; 403. Third mass flow controller; 404. Fourth mass flow controller; 405. Fifth mass flow controller; 406. Sixth mass flow controller;

[0035] 501. First heating and vaporization equipment; 502. Second heating and vaporization equipment; 503. Third heating and vaporization equipment; 601. First three-way valve; 602. Second three-way valve; 603. Third three-way valve; 701. First gas decarbonization filter; 702. Second gas decarbonization filter; 801. First back pressure valve; 802. Second back pressure valve; 901. First heat exchanger; 902. Second heat exchanger; 1001. First water-gas separator; 1002. Second water-gas separator;

[0036] 1101 Wastewater tank; 1201 Condensate coil; 1301 Constant flow pump; 2001 First temperature sensor; 2002 Second temperature sensor; 2003 Third temperature sensor; 2004 Fourth temperature sensor; 2101 First pressure sensor; 2102 Second pressure sensor; 2103 Third pressure sensor; 2104 Fourth pressure sensor. Detailed Implementation

[0037] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0038] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0039] Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of implementation. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this utility model.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate for the embodiments of this application described herein.

[0041] like Figure 1 As shown, this embodiment provides a SOC stack testing system for detecting carbon deposits in the inlet and outlet gas pipelines of an SOC stack.

[0042] Specifically, when testing the SOC fuel cell stack, the SOC fuel cell stack is placed in a heating furnace 600. The SOC fuel cell stack has an anode inlet, an anode outlet, a cathode inlet, and a cathode outlet, and the anode inlet, anode outlet, cathode inlet, and cathode outlet are all connected to corresponding pipelines.

[0043] The SOC fuel cell stack includes a first pressure sensor 2101 installed on the anode inlet pipe and a third pressure sensor 2103 installed on the anode outlet pipe to detect pressure changes in these pipes. Both sensors are connected to the electrical control system 200, which monitors the pressure values ​​K1 and K2 detected on the anode inlet and outlet pipes in real time and feeds them back to the electrical control system 200. The electrical control system 200 is connected to a host computer 100. The host computer 100 has pre-set allowable ranges for pressure values ​​K1 and K2; it reacts promptly when these ranges are exceeded. In one specific implementation, the electrical control system 200 can be a Siemens S7-1500 PLC module.

[0044] A second pressure sensor 2102 is installed on the cathode inlet pipe of the SOC fuel cell stack, and a fourth pressure sensor 2104 is installed on the cathode outlet pipe to detect pressure changes in the cathode inlet and outlet pipes. Similarly, both the second pressure sensor 2102 and the fourth pressure sensor 2104 are connected to the electrical control system 200, which transmits the detected pressure values ​​K3 and K4 on the cathode inlet pipe to the electrical control system 200 in real time. The electrical control system 200 is connected to the host computer 100. The host computer 100 also has preset allowable ranges for pressure values ​​K3 and K4; when these ranges are exceeded, the host computer 100 will react promptly.

[0045] Simultaneously, the anode inlet pipe of the SOC fuel cell stack is connected to a gas chromatograph 300 for detecting the composition of the gas entering the anode. The gas chromatograph 300 is connected to the electrical control system 200, which in turn is connected to a host computer 100. The host computer 100 presets the gas composition SV in the anode inlet pipe, and the gas chromatograph 300 detects the actual value PV of the gas composition in the anode inlet pipe, analyzing the carbon content in the gas. If the deviation between these values ​​deviates from the preset range, the host computer 100 will react promptly.

[0046] It should be noted that, in other embodiments, a gas chromatograph 300 can also be connected to the anode and cathode outlet pipes of the SOC stack to detect the composition of the outlet gas from the anode or cathode of the SOC stack.

[0047] In this scheme, while detecting the pressure in the anode inlet, anode outlet, cathode inlet, and cathode outlet pipelines, the gas composition in the anode inlet and outlet pipelines is also analyzed simultaneously. If any deviation occurs, the host computer 100 will react promptly. In one scenario, if carbon deposits are dispersed and accumulated in different locations in the pipeline, the pressure sensor detects a pressure change that does not deviate from the preset value, but the gas composition in the gas chromatograph 300 pipeline has deviated from the preset value; in this case, the host computer 100 can react promptly. In another scenario, if carbon deposits accumulate in one location in the pipeline, the pressure sensor detects a pressure change that deviates from the preset value, but the gas composition in the gas chromatograph 300 pipeline does not deviate from the preset value; in this case, the host computer 100 will also react promptly. This scheme simultaneously detects pipeline pressure and gas composition, monitors the carbon deposition status of the detection system, improves the system's sensitivity to carbon deposition, and thus enables timely response.

[0048] In this application, the gas chromatograph 300 is connected to the anode inlet pipe of the SOC stack via the second three-way valve 602, and the gas chromatograph 300 is connected to the anode outlet pipe of the SOC stack via the third three-way valve 603.

[0049] The gas chromatograph 300 is connected to both the inlet and outlet gas pipelines via a second three-way valve 602 and a third three-way valve 603. In some cases, it is necessary to collect gas components from the inlet pipeline, and in others, from the outlet pipeline. To facilitate control, a ninth solenoid valve 209 is installed on the connection line between the second three-way valve 602 and the gas chromatograph 300, and a tenth solenoid valve 2010 is installed on the connection line between the third three-way valve 603 and the gas chromatograph 300. This allows for control of the gas entering the gas chromatograph 300. Additionally, a condenser coil 1201 is installed between the second three-way valve 602 and the gas chromatograph 300. Since the gas chromatograph 300 uses an automatic sample injection method, the condenser coil 1201 cools the gas before injection and separates any moisture, protecting the gas chromatograph and improving analytical accuracy.

[0050] As a further improvement, a first gas decarbonization filter 701 is installed on the anode inlet pipe of the SOC stack, and a second gas decarbonization filter 702 is installed on the anode outlet pipe. The gas filtered by the first gas decarbonization filter 701 and the second gas decarbonization filter 702 enters the gas chromatograph 300. That is, both the first gas decarbonization filter 701 and the second gas decarbonization filter 702 are located on the inlet side of the second three-way valve 602 and the third three-way valve 603. The first gas decarbonization filter 701 and the second gas decarbonization filter 702 are used to adsorb and filter carbon generated by cracking and disproportionation reactions.

[0051] The anode inlet pipe of the SOC stack is also connected to a steam pipe via a first three-way valve 601, which is located on the inlet side of the first gas decarbonization filter 701. Specifically, a constant flow pump 1301, a seventh one-way valve 307, and a third heating vaporization device 503 are sequentially installed on the steam pipe along its inlet direction, and the third heating vaporization device 503 is connected to the inlet of the first three-way valve 601.

[0052] The anode and cathode inlet pipes of the SOC fuel cell stack are sequentially equipped with a gas filter, a solenoid valve, a check valve, a mass flow controller, and a heating vaporization device along the gas inlet direction. The gas filter removes impurities from the gas, improving its purity; the solenoid valve facilitates control of the on / off state of its gas line; the check valve prevents backflow in its gas line; and the mass flow controller automatically controls the gas flow rate in the lines. The heating vaporization device on the anode inlet pipe of the SOC fuel cell stack is a first heating vaporization device 501, located on the inlet side of the first three-way valve 601.

[0053] Specifically, for ease of explanation, the following components are sequentially arranged along the air intake direction on the cathode inlet pipe of the SOC fuel cell stack: a sixth gas filter 106, a sixth solenoid valve 206, a sixth check valve 306, a sixth mass flow controller 406, and a second heating and vaporization device 502. Air enters the SOC fuel cell cathode sequentially through the sixth gas filter 106, the sixth solenoid valve 206, the sixth check valve 306, the sixth mass flow controller 406, and the second heating and vaporization device 502. The sixth gas filter 106 filters the air, the sixth mass flow controller 406 controls the incoming gas flow rate, and the second heating and vaporization device 502 heats and vaporizes the gas, preheating it.

[0054] In this application, the gas intake of the SOC stack can be a single gas or a mixture of gases, such as at least one of CH4, CO2, CO, and H2, and an auxiliary gas, such as N2, can also be added. In this embodiment, CH4, CO2, CO, H2, and N2 enter the SOC stack anode, each gas is transported separately through a pipeline, and preheated and mixed in the first heating and vaporization device 501. Each intake pipeline is equipped with a gas filter, a solenoid valve, a check valve, and a mass flow controller. For ease of explanation, exemplarily, the pipeline transporting CH4 is arranged sequentially along its intake direction as a first gas filter 101, a first solenoid valve 201, a first check valve 301, and a first mass flow controller 401, and the outlet of the first mass flow controller 401 is connected to the inlet of the first heating and vaporization device 501.

[0055] The pipeline for conveying CO2 is sequentially equipped with a second gas filter 102, a second solenoid valve 202, a second check valve 302, and a second mass flow controller 402 along its inlet direction, and the outlet of the second mass flow controller 402 is connected to the inlet of the first heating and vaporization device 501.

[0056] The pipeline for conveying CO is sequentially equipped with a third gas filter 103, a third solenoid valve 203, a third check valve 303 and a third mass flow controller 403 along its inlet direction. The outlet of the third mass flow controller 403 is connected to the inlet of the first heating and vaporization device 501.

[0057] The pipeline for conveying H2 is sequentially equipped with a fourth gas filter 104, a fourth solenoid valve 204, a fourth check valve 304 and a fourth mass flow controller 404 along its inlet direction. The outlet of the fourth mass flow controller 404 is connected to the inlet of the first heating and vaporization device 501.

[0058] The pipeline for conveying N2 is sequentially equipped with a fifth gas filter 105, a fifth solenoid valve 205, a fifth check valve 305 and a fifth mass flow controller 405 along its inlet direction. The outlet of the fifth mass flow controller 405 is connected to the inlet of the first heating and vaporization device 501.

[0059] As a further improvement, a heat exchanger, a water-gas separator, a back pressure valve, and a solenoid valve are sequentially installed along the outlet direction on the anode and cathode outlet pipes of the SOC stack. Furthermore, a second gas decarbonization filter 702 is located on the inlet side of the heat exchanger on the anode outlet pipe. The back pressure valve regulates the back pressure at the anode and cathode outlets to release pressure in a timely manner, thereby balancing the pressure difference between the anode and cathode pipes.

[0060] Specifically, the anode outlet pipe of the SOC stack is sequentially equipped with a second gas decarbonization filter 702, a first heat exchanger 901, a first water-gas separator 1001, a third three-way valve 603, a first back pressure valve 801, and a seventh solenoid valve 207 along its outlet direction. The outlet of the first water-gas separator 1001 is also connected to a wastewater tank 1101.

[0061] The cathode outlet pipe of the SOC stack is sequentially equipped with a second heat exchanger 902, a second water-gas separator 1002, a second back pressure valve 802, and an eighth solenoid valve 208 along its outlet direction.

[0062] In addition, a first temperature sensor 2001 is installed on the anode inlet pipe of the SOC fuel cell stack, and a third temperature sensor 2003 is installed on the anode outlet pipe; a second temperature sensor 2002 is installed on the cathode inlet pipe of the SOC fuel cell stack, and a fourth temperature sensor 2004 is installed on the cathode outlet pipe. Furthermore, the first temperature sensor 2001 and the first pressure sensor 2101 are both located near the anode inlet of the SOC fuel cell stack, the third temperature sensor 2003 and the third pressure sensor 2103 are both located near the anode outlet of the SOC fuel cell stack, the second temperature sensor 2002 and the second pressure sensor 2102 are both located near the cathode inlet of the SOC fuel cell stack, and the fourth temperature sensor 2004 and the fourth pressure sensor 2104 are both located near the cathode outlet of the SOC fuel cell stack. The temperature sensors are used to measure the gas temperature in the pipes, and the pressure sensors are used to measure the gas pressure in the pipes.

[0063] A constant flow pump 1301 is also installed on the steam pipeline. The gas chromatograph 300, pressure sensor, temperature sensor, and constant flow pump 1301 are all connected to the host computer 100 (not shown in the figure) through the electrical control system 200. The flow rate of steam in the steam pipeline can be controlled by the constant flow pump 1301.

[0064] In this embodiment, the SOC stack is also connected to an electrochemical integrated testing device 500 for electrochemical testing of the SOC stack. The electrochemical integrated testing device 500 is also connected to an electrical control system 200.

[0065] When performing electrochemical tests on a SOC (Solar Charge) fuel cell, the SOC needs to be pressurized. A pressure bar 400 is installed on top of the SOC to provide pressure to the SOC. Specifically, the pressure bar 400 can be connected to a cylinder piston, and the cylinder piston can be moved by the air at the cathode inlet of the SOC to push the pressure bar 400.

[0066] In this design, temperature and pressure sensors are installed at the inlet and outlet of both the anode and cathode of the SOC fuel cell stack to monitor the temperature and pressure of the gas entering and exiting the stack in real time. Simultaneously, a gas chromatograph 300 is connected to the anode inlet and outlet pipelines of the SOC fuel cell stack to detect the gas composition in the pipelines. By simultaneously detecting pipeline pressure and gas composition through multiple detection methods, the carbon deposition status of the detection system is monitored, improving the system's sensitivity to carbon deposition.

[0067] The anode gas enters the first heating vaporization device 501 for thorough mixing and heating, while the cathode gas enters the SOC stack after being thoroughly mixed and heated in the second heating vaporization device 502. Furthermore, the anode-side gas is further mixed with water vapor from the third heating vaporization device 503 on the water vapor pipeline in the first three-way valve 601, and then enters the first gas decarbonization filter 701. The first gas decarbonization filter 701 can adsorb and filter various carbon deposits produced by hydrocarbon cracking and carbon monoxide cracking. The filtered gas is then introduced into the anode of the SOC stack, and simultaneously, gas sampling and analysis of carbon content changes are performed through the second three-way valve 602.

[0068] The second gas decarbonization filter 702 on the anode outlet pipeline is used to adsorb and filter carbon deposits that may be generated in the anode tail gas. A first back pressure valve 801 and a second back pressure valve 802 are installed in the anode and cathode tail gas of the fuel cell stack, respectively. These valves automatically adjust the gas pressure to maintain it within a reasonable range based on feedback from pressure sensors and user-preset differential pressure requirements. The high-temperature tail gas generated by the fuel cell stack is first cooled by the first heat exchanger 901 and the second heat exchanger 902, then passed through the first water-gas separator 1001 and the second water-gas separator 1002 to remove the water generated therein and collect it in the wastewater tank 1101. Finally, the tail gas is discharged from the system controlled by the seventh solenoid valve 207 and the eighth solenoid valve 208.

[0069] When carbon-containing fuel runs in the pipeline, carbon deposits caused by cracking and disproportionation reactions gradually accumulate in the pipeline. If the pressure sensors detect a gradual increase in pressure, the gas chromatograph 300 will also detect a certain deviation between the actual value and the preset value of the carbon-containing fuel ratio. When the deviation exceeds the allowable range, the system automatically intervenes to prevent carbon buildup. On the one hand, when carbon buildup blockage is detected, the system suspends the discharge or electrolysis state and increases the nitrogen flow for purging. The first gas decarbonization filter 701 and the second gas decarbonization filter 702 will adsorb and filter the carbon deposits. On the other hand, the system will increase the water vapor content by adjusting the constant flow pump 1301, thereby converting and suppressing the generated carbon deposits and maintaining the stability of the test system. This is achieved through the following reactions: C + H₂O → CO + H₂, CO + H₂O → CO₂ + H₂.

[0070] In addition, the first gas decarbonization filter 701 and the second gas decarbonization filter 702 are detachable filters. Due to their adsorption effect, a large amount of carbon will preferentially accumulate at the first gas decarbonization filter 701 and the second gas decarbonization filter 702. When the system detects carbon deposits, the first gas decarbonization filter 701 and the second gas decarbonization filter 702 can be cleaned and replaced accordingly without replacing the entire pipeline.

[0071] The first back pressure valve 801 and the second back pressure valve 802 can automatically open to relieve pressure when the pressure in the system pipeline increases, preventing overpressure in the system. All pipelines can be made of Incoloy 800H (nickel alloy) material and coated with chromium carbide ceramic to reduce the rate of carbon buildup and minimize carbon deposits.

[0072] The terms “installation,” “setup,” “equipped with,” and “connection” used herein should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0073] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A SOC fuel cell stack testing system for detecting carbon deposits in the inlet and outlet gas pipelines of a SOC fuel cell stack, wherein the SOC fuel cell stack is placed in a heating furnace (600); Its features are: A first pressure sensor (2101) is installed on the anode inlet pipe of the SOC stack, and a third pressure sensor (2103) is installed on the anode outlet pipe, for detecting pressure changes on the anode inlet and outlet pipes of the SOC stack. A second pressure sensor (2102) is installed on the cathode inlet pipe of the SOC stack, and a fourth pressure sensor (2104) is installed on the cathode outlet pipe, for detecting pressure changes on the cathode inlet and outlet pipes of the SOC stack. A gas chromatograph (300) is connected to the anode inlet pipe, anode outlet pipe, or cathode outlet pipe of the SOC stack for detecting the composition of the inlet or outlet gas of the SOC stack.

2. The SOC stack test system of claim 1, wherein: The SOC stack is also equipped with a first gas decarbonization filter (701) on the anode inlet pipe; and / or A second gas decarbonization filter (702) is also installed on the anode outlet pipe of the SOC stack; The gas filtered by the first gas decarbonization filter (701) and / or the second gas decarbonization filter (702) enters the gas chromatograph (300).

3. The SOC stack testing system according to claim 2, characterized in that: The first pressure sensor (2101) is located on the outlet side of the first gas decarbonization filter (701); and / or The third pressure sensor (2103) is located on the inlet side of the second gas decarbonization filter (702).

4. The SOC stack testing system according to claim 2, characterized in that: The SOC stack anode inlet pipe is also connected to a steam pipe via a first three-way valve (601), which is located on the inlet side of the first gas decarbonization filter (701).

5. The SOC stack testing system according to claim 4, characterized in that: The SOC stack has at least one air inlet pipe at its anode inlet. A gas filter, a solenoid valve, a check valve, and a mass flow controller are sequentially installed along the air inlet direction on the anode air inlet pipe before converging at a heating and vaporization device; and / or The cathode inlet pipe of the SOC stack is sequentially equipped with a gas filter, a solenoid valve, a check valve, a mass flow controller, and a heating and vaporization device along the inlet direction.

6. The SOC stack testing system according to claim 5, characterized in that: The heating and vaporization device on the anode inlet pipe of the SOC stack is a first heating and vaporization device (501), which is located on the inlet side of the first three-way valve (601).

7. The SOC stack testing system according to claim 2, characterized in that: A heat exchanger, a water-gas separator, a back pressure valve, and a solenoid valve are sequentially installed along the outlet direction on the anode outlet pipe of the SOC stack; and / or The cathode outlet pipe of the SOC stack is equipped with a heat exchanger, a water-gas separator, a back pressure valve, and a solenoid valve in sequence along the outlet direction.

8. The SOC stack testing system according to claim 7, characterized in that: On the anode outlet pipe of the SOC stack, the second gas decarbonization filter (702) is located on the inlet side of the heat exchanger.

9. The SOC stack testing system according to claim 4, characterized in that: A first temperature sensor (2001) is installed on the anode inlet pipe of the SOC stack, and a third temperature sensor (2003) is installed on the anode outlet pipe; and / or A second temperature sensor (2002) is installed on the cathode inlet pipe of the SOC stack, and a fourth temperature sensor (2004) is installed on the cathode outlet pipe.

10. The SOC stack testing system according to claim 9, characterized in that: A constant flow pump (1301) is also installed on the steam pipeline. The gas chromatograph (300), pressure sensor, temperature sensor and constant flow pump (1301) are all connected to the host computer (100) through the electrical control system (200).

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