Integrated test bench for solid oxide fuel stack
By designing an integrated test bench, including stack installation module, electronic load module, exhaust gas treatment module, gas supply module and DC power module, the existing test devices are solved by dispersed structure, single functions and lack of integration, and flexible switching between power generation and electrolytic states and comprehensive performance evaluation is achieved, and the accuracy and reliability of the test are improved.
Patent Information
- Application Number
- CN202421657764.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-12
AI Technical Summary
The existing solid oxide battery test devices are structurally dispersed, have single functions, lack integration, and cannot flexibly switch between power generation and electrolytic states, resulting in the impact of the accuracy and reliability of the test.
An integrated test bench is designed, including a stack installation module, an electronic load module, an exhaust treatment module, a gas supply module and a DC power module, which can be tested in discharge and electrolytic states and achieve flexible switching between the two states. The gas supply module supplies different gases through the same set of equipment, enriching the testing functions.
It improves the accuracy and repeatability of solid oxide fuel stack testing, realizes comprehensive performance evaluation under different working conditions, and reduces the difficulty and cost of testing.
Smart Images
Figure CN222952461U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of solid oxide fuel cell stack testing, in particular to an integrated test bench for solid oxide fuel cell stacks. Background Art
[0002] Solid oxide cell (SOC) is a high-temperature fuel cell that uses solid oxide as the electrolyte material and can directly convert chemical energy into electrical energy under high temperature conditions (usually 600 to 1000°C). Its working principle is based on electrochemical reactions. The chemical reactions occurring on the anode and cathode sides are: fuel gas (such as hydrogen H 2 or methane CH 4 ) undergoes an oxidation reaction at the anode, releasing electrons and generating protons (H + ) and possible other ions; oxygen undergoes a reduction reaction at the cathode, absorbs electrons transferred from the anode, passes through the electrolyte, reaches the anode and combines with hydrogen ions or other ions to form water or other compounds.
[0003] Compared with traditional combustion power generation methods, solid oxide cells produce almost no pollutant emissions during the power generation process and are an environmentally friendly energy conversion technology. And because they work under high temperature conditions, the energy conversion efficiency of solid oxide cells is usually very high, reaching more than 60%. If combined with cogeneration, the total efficiency can exceed 80%. At the same time, solid oxide cells can use a variety of types of fuels, including hydrogen, methane, carbon monoxide, and even certain types of biogas, which increases their adaptability in different application scenarios. In addition, the reversibility of solid oxide cells also makes them have potential application value in the field of energy storage. They can store energy through water electrolysis or other chemical reactions when electricity demand is low, and release energy when demand is high.
[0004] Testing of solid oxide batteries is an important part of evaluating their performance and stability. Testing equipment and methods are crucial to ensuring the development and optimization of solid oxide battery technology. During the testing process, the performance of solid oxide batteries and battery stacks needs to be tested, including key indicators such as power generation efficiency, power output, and fuel utilization. Through these tests, researchers can evaluate the performance of SOCs, which helps optimize the design of SOCs and thus promote the commercialization of solid oxide battery technology.
[0005] Existing solid oxide battery test devices have the following limitations in design and function: 1) The integration between the various components and subsystems of the existing test devices is not high, resulting in a scattered overall layout, which may cause unstable inlet and outlet air of the entire test bench and uneven heating, thereby affecting the accuracy and repeatability of the test; 2) Due to the insufficient integration between the components and subsystems, the existing test devices often require additional interfaces and connections to achieve the coordinated work of the various parts, which increases the complexity of the system and may also affect the stability and reliability of the test; 3) Existing test devices are often designed only for specific test requirements, and the test bench has a single function and can only supply one type of fuel gas or oxidizing gas. When the battery stack is tested with different types of gases or multiple test conditions are required, it may be necessary to replace or reconfigure the equipment, which increases the difficulty and cost of the test and also affects the reliability of the test; 4) Existing test devices can only perform discharge tests or electrolysis tests, but when performing performance tests on solid oxide batteries, it may be necessary to switch between two different working states, namely the power generation state and the electrolysis state. The existing test devices lack flexible state switching functions, which limits the comprehensive evaluation of the performance of solid oxide batteries under different working conditions. Utility Model Content
[0006] The utility model aims to provide an integrated test bench for a solid oxide fuel cell stack, so as to solve the problems of the solid oxide battery device in the prior art, such as dispersed structure, single function, lack of integration and inability to switch between different working states.
[0007] In order to achieve the above-mentioned purpose, the utility model provides an integrated test bench for a solid oxide fuel cell stack, including a cell stack installation module, an electronic load module for testing the discharge performance of the cell stack in the cell stack installation module, and an exhaust gas treatment module for receiving the exhaust gas in the cell stack installation module, and also includes a gas supply module for supplying fuel gas to the cell stack installation module in the cell stack discharge state, and supplying electrolysis gas to the cell stack installation module in the cell stack electrolysis state, and a DC power supply module electrically connected to the cell stack in the cell stack electrolysis state; the cell stack can be tested in two different working states of discharge and electrolysis, and flexible switching between the two test states can be achieved. Specifically, the cell stack installation module includes a closed cell stack installation chamber, and a temperature control device and a pressurizing device are also provided in the cell stack installation chamber. In addition, the gas supply module can supply different gases through the same set of gas supply equipment, so as to achieve the test of the cell stack under different working conditions without changing the test equipment.
[0008] Furthermore, the gas supply module includes a gas input precision control device and a gas input heating device connected to each other, wherein the gas input precision control device is used to input anode gas and cathode gas to the solid oxide fuel cell stack, and the gas input heating device is used to heat the anode gas and cathode gas respectively and transport them to the stack installation module. Specifically, the gas input precision control device includes a filter, a valve and a flow controller connected to each other. Furthermore, the gas input precision control device includes at least a hydrogen inlet, a CO / CO 2 The air inlet and the methane inlet, as well as the cathode gas air inlet, can introduce different gases according to the requirements of the fuel cell test, thereby enriching the test function; it also includes an electronic control module, which controls the gas input of the flow controller through electrical signals to achieve precise control, wherein the electronic control module may include an electronic control device and an electronic control controller for controlling the electronic control device.
[0009] Furthermore, the exhaust gas treatment module includes a heat exchange module for recovering the heat energy of the exhaust gas discharged from the stack installation module. Specifically, the heat exchange module includes a heat exchange pipe connected to the stack installation module, the heat exchange pipe has an anode gas outlet, a cathode gas outlet, and a fluid inlet, which is used to make the exhaust gas and the high-temperature gas in the heat exchange pipe flow through the cooling fluid, thereby cooling the high-temperature gas discharged from the stack installation module, and facilitating the recovery or discharge of the exhaust gas.
[0010] In addition, a gas leakage alarm module is further included, which is connected to the battery stack installation module and the connecting pipes between the modules. Specifically, a probe can be used to test whether there is gas leakage in the battery stack in the battery stack installation module. Similarly, and in a basically similar manner, whether there is gas leakage in each connecting pipe can be detected.
[0011] Furthermore, it also includes an integrated box, which includes at least two separated mounting cavities, one side of the mounting cavity is provided with a stack mounting module, and the other side of the mounting cavity is provided with an electronic load module and a DC power supply module.
[0012] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0013] 1) The integrated test bench provided in the present application integrates a stack installation module, an electronic load module, an exhaust gas treatment module, a gas supply module for providing fuel gas and electrolytic gas, and a DC power supply module, making the structure of the test system more centralized;
[0014] 2) The integrated test bench can test the stack in two different working states: discharge and electrolysis, and realize flexible switching between the two test states;
[0015] 3) The gas supply module can supply different gases through the same set of gas supply equipment, so that the battery stack can be tested under different working conditions without changing the test equipment, and the performance of the solid oxide battery can be fully evaluated under different working conditions;
[0016] 4) The integrated test bench provided in this application can improve the accuracy and repeatability of solid oxide fuel cell stack testing. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In the drawings, the sizes and proportions do not represent the sizes and proportions of actual products. The drawings are merely illustrative, and some non-essential elements or features are omitted for clarity.
[0018] Figure 1 This is a schematic structural diagram of an integrated test bench for a solid oxide fuel cell stack according to an embodiment of the utility model (I);
[0019] Figure 2 This is a structural schematic diagram (II) of an integrated test bench for a solid oxide fuel cell stack according to an embodiment of the utility model.
[0020] Description of Reference Numerals
[0021] 1. Stack installation module; 2. Electronic load module; 3. Exhaust gas treatment module; 301. Heat exchange module; 4. Gas supply module; 401. Gas input precision control device; 402. Gas input heating device; 5. DC power supply module; 6. Electronic control module; 601. Electronic control equipment; 602. Electronic control controller; 7. Gas leakage alarm module; 8. Integrated box; 801. Installation cavity. DETAILED DESCRIPTION
[0022] The present invention will be described in detail with reference to the accompanying drawings. What is described here is only a preferred embodiment of the present invention, and those skilled in the art can think of other ways to implement the present invention based on the preferred embodiment, and other ways also fall within the scope of the present invention.
[0023] Reference Figure 1-Figure 2 This embodiment provides an integrated test bench for a solid oxide fuel cell stack, which integrates a stack installation module 1, an electronic load module 2, an exhaust gas treatment module 3, a gas supply module 4, and a DC power supply module 5.
[0024] In one possible embodiment, the battery stack installation module 1 includes a sealed battery stack installation compartment, which is also provided with a temperature control device and a pressurizing device. When the test bench is working, the battery stack or battery is placed in the battery stack installation compartment, and the temperature control device and the pressurizing device are used to heat the battery stack and apply a specific pressure to the battery stack so that the battery stack meets the test conditions.
[0025] In order to help the solid oxide fuel cell stack work, the present embodiment provides a gas supply module 4, wherein the gas supply module 4 can supply fuel gas to the stack mounting module 1 in the stack discharge state, and can also supply electrolysis gas to the stack mounting module 1 in the stack electrolysis state. The gas supply module can supply different gases through the same set of gas supply equipment, so as to test the stack under different working conditions without changing the test equipment. Specifically, the gas supply module may include a plurality of air inlet pipes, each of which is used to connect to a different gas source, so as to supply different gases to the stack. To match it, the present embodiment provides an electronic load module 2, which is connected to the fuel cell installation module 1. When the fuel cell stack is in the power generation state, the gas supply module 4 supplies fuel gas to the fuel electrode of the fuel cell stack, and at the same time supplies oxidizing gas to the air electrode of the fuel cell stack, so as to test the power generation performance of the fuel cell stack and complete the test of the solid oxide fuel cell stack in the discharge state; the present embodiment also provides a DC power supply module 5, which is connected to the fuel cell installation module 1. When the fuel cell stack is in the electrolysis state, it provides power to the fuel cell stack. At the same time, the gas supply module 4 supplies electrolytic gas to the air electrode of the fuel cell stack to enable the fuel cell stack to perform electrolysis, thereby realizing flexible state switching and being able to comprehensively evaluate the performance of the SOC under different working conditions (power generation state or electrolysis state).
[0026] Specifically, in this embodiment, the gas supply module 4 includes a gas input precision control device 401 and a gas input heating device 402 connected to each other, wherein the gas input precision control device 401 is used to input anode gas and cathode gas to the solid oxide fuel cell stack, and the gas input heating device 402 is used to heat the anode gas and cathode gas respectively and transport them to the stack installation module 1. Among them, the gas input precision control device 401 includes a filter, a valve and a flow controller connected to each other to achieve gas purification and control the gas flow.
[0027] In order to accurately control the gas input, the present embodiment is further provided with an electric control module 6, which may include an electric control device 601 and an electric control controller 602 for controlling the electric control device 601, and controls the gas input of the flow controller through an electrical signal, thereby achieving accurate control.
[0028] In order to further enrich the test function, in a possible embodiment, the gas input precise control device 401 at least includes a hydrogen gas inlet, a CO gas inlet, a CO 2 The gas inlet and the methane inlet, as well as the cathode gas air inlet, may also include H 2 O air inlet and O 2Gas inlet. It can be used to introduce different gases according to the requirements of the stack test to meet various conditions of the stack test. For example, in the power generation mode, fuel gas, such as H 2 At least one of CO and methane is supplied to the air electrode of the stack to supply an oxidizing gas, such as O 2 , CO 2 and H 2 O at least one; in electrolysis mode, supply CO to the air electrode of the stack 2 and / or H 2 O, it is possible to test the fuel cell stack under different working conditions (different fuel gases / electrolyte gases) without changing the test equipment.
[0029] In addition, since the solid oxide fuel cell stack will generate a large amount of high-temperature exhaust gas regardless of whether it is in the discharge state or the electrolysis state, for this reason, the present embodiment also provides an exhaust gas treatment module 3 for receiving the exhaust gas in the stack installation module 1. Among them, the exhaust gas treatment module 3 includes a heat exchange module 301, which is used to recover the heat energy of the exhaust gas discharged from the stack installation module 1. Specifically, the heat exchange module 301 includes a heat exchange pipe connected to the stack installation module 1, and the heat exchange pipe has an anode outlet, a cathode outlet, and a fluid inlet, which is used to provide a cooling fluid for convection with the high-temperature gas in the heat exchange pipe. The fluid includes but is not limited to air and / or water, thereby cooling the high-temperature gas discharged from the stack installation module 1, and facilitating the recovery or discharge of the exhaust gas.
[0030] In addition, it further includes a gas leakage alarm module 7, which is connected to the battery stack installation module 1 and the connecting pipes between the modules. Specifically, the probe can be used to test whether there is gas leakage in the battery stack in the battery stack installation module 1. Similarly, in a basically similar way, it can also be used to detect whether there is gas leakage in each connecting pipe, thereby enhancing the safety performance of the test system.
[0031] Furthermore, in a possible embodiment, it also includes an integrated box 8, which includes at least two separated installation cavities 801, one side of the installation cavity 801 is provided with a battery stack installation module 1, and the other side of the installation cavity 801 is provided with an electronic load module 2 and a DC power supply module 5, and the space inside the integrated box 8 is reasonably planned.
[0032] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "inside" and "outside" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0034] The protection scope of the present invention is limited only by the claims. Thanks to the teachings of the present invention, those skilled in the art will easily recognize that alternative structures to the structures disclosed in the present invention can be used as feasible alternative embodiments, and the embodiments disclosed in the present invention can be combined to generate new embodiments, which also fall within the scope of the appended claims.
Claims
1. An integrated test bench for a solid oxide fuel cell stack, comprising a stack installation module (1), an electronic load module (2) for testing the discharge performance of the stack in the stack installation module (1), and an exhaust gas treatment module (3) for receiving exhaust gas in the stack installation module (1), characterized in that: Also includes A gas supply module (4), the gas supply module (4) being used to supply fuel gas to the stack installation module (1) when the stack is in a discharge state, and to supply electrolysis gas to the stack installation module (1) when the stack is in an electrolysis state; A direct current power supply module (5), the direct current power supply module (5) being electrically connected to the cell stack and being used to supply power to the cell stack when the cell stack is in an electrolysis state.
2. An integrated test bench for a solid oxide fuel cell stack according to claim 1, characterized in that: The gas supply module (4) comprises a gas input precision control device (401) and a gas input heating device (402) which are connected to each other, wherein the gas input precision control device (401) is used to input anode gas and cathode gas to the solid oxide fuel cell stack, and the gas input heating device (402) is used to heat the anode gas and cathode gas respectively and transport them to the cell stack installation module (1).
3. An integrated test bench for a solid oxide fuel cell stack according to claim 2, characterized in that: The gas input precise control device (401) comprises a filter, a valve and a flow controller which are connected to each other.
4. An integrated test bench for a solid oxide fuel cell stack according to claim 3, characterized in that: The gas input precise control device (401) comprises at least a hydrogen inlet, a CO / CO2 inlet, a methane inlet, and an oxidizing gas inlet.
5. The integrated test bench for solid oxide fuel cell stack according to claim 3, characterized in that: It also includes an electric control module (6) for controlling the gas input of the flow controller through an electric signal.
6. The integrated test bench for a solid oxide fuel cell stack according to claim 1, characterized in that: The battery stack installation module (1) comprises a sealed battery stack installation chamber, in which a temperature control device and a pressurizing device are also provided.
7. An integrated test bench for a solid oxide fuel cell stack according to claim 1, characterized in that: The tail gas treatment module (3) comprises a heat exchange module (301) for cooling the high-temperature gas discharged from the fuel cell installation module (1).
8. An integrated test bench for a solid oxide fuel cell stack according to claim 7, characterized in that: The heat exchange module (301) comprises a heat exchange pipe connected to the stack installation module (1), the heat exchange pipe having an anode gas outlet, a cathode gas outlet, and a fluid inlet for providing a cooling fluid for convection with the high-temperature gas in the heat exchange pipe.
9. An integrated test bench for a solid oxide fuel cell stack according to claim 1, characterized in that: It also includes a gas leakage alarm module (7) which is connected to the fuel cell installation module (1) and the connecting pipes between the modules.
10. An integrated test bench for a solid oxide fuel cell stack according to any one of claims 1 to 9, characterized in that: It also includes an integrated box (8), wherein the integrated box (8) includes at least two separated mounting cavities (801), one mounting cavity (801) being provided with a stack mounting module (1), and the other mounting cavity (801) being provided with an electronic load module (2) and a DC power supply module (5).