Oil circulation cooling galvanic pile test platform

Abstract

The invention discloses an oil circulation cooling galvanic pile test platform, which comprises a test platform plate, the top of the test platform plate is fixedly connected with a support angle plate, the outer wall of the support angle plate is fixedly connected with a fan, the top of the test platform plate is fixedly connected with a plate heat exchanger, the outer wall of the plate heat exchanger is fixedly connected with a flow meter, and the flow meter is fixedly connected with a flow meter. And the fan, the plate heat exchanger and the flow meter are fixedly communicated with one another. By arranging the testing platform plate, the supporting angle plate, the fan, the plate heat exchanger, the expansion box, the flow meter, the air cooling heat exchanger, the circulating oil pump, the heating box, the cooling oil pile inlet pipe, the hydrogen-rich gas pile inlet pipe, the air pile outlet pipe, the cooling oil pile outlet pipe, the hydrogen-rich gas pile outlet pipe, the air pile inlet pipe and the ball valve, the whole structure is compact, the pipeline volume is small, and the testing efficiency is high. Meanwhile, the inlet ball valve and the outlet ball valve can effectively control overflow of cooling oil in an oil way, and waste of the cooling oil is reduced.

Description

Technical Field

[0001] This invention relates to the field of fuel cell stack testing equipment technology, and in particular to an oil-circulating cooled fuel cell stack testing platform. Background Technology

[0002] In a fuel cell system, the fuel cell stack is the key component that generates electricity through an electrochemical reaction between hydrogen and oxygen from the air. It also accounts for the largest portion of the cost, and its performance largely determines the overall performance of the fuel cell system. The fuel cell stack test bench, as a device for measuring stack performance, plays a crucial role in both the fuel cell stack research and development stage and the mass production (off-line testing) stage.

[0003] In existing technologies, during fuel cell stack testing, the test bench needs to accurately control variables such as the flow rate, temperature, humidity, and pressure of the gases (hydrogen, air) entering the stack for performance evaluation. Furthermore, the test bench adjusts a wider range of process variables and requires higher control precision, resulting in a structure completely different from that of a fuel cell system. This leads to a massive piping volume in the test bench, typically tens of times that of an engine system. Under these circumstances, simulating the dynamic operating conditions of an engine is extremely difficult. Therefore, reducing the piping volume is a crucial step in bridging the gap between the test bench and the engine system. Thus, we propose an oil-circulating cooled fuel cell stack test platform to address these issues. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and propose an oil-circulating cooled fuel cell stack test platform.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A test platform for an oil-circulating cooled fuel cell stack includes a test platform plate. A support corner plate is fixedly connected to the top of the test platform plate. A fan is fixedly connected to the outer wall of the support corner plate. A plate heat exchanger is fixedly connected to the top of the test platform plate. A flow meter is fixedly connected to the outer wall of the plate heat exchanger. The fan, plate heat exchanger, and flow meter are fixedly interconnected. An expansion tank is fixedly connected to the top of the test platform plate. The expansion tank is fixedly interconnected with the plate heat exchanger. An air-cooled heat exchanger is fixedly connected to the top of the test platform plate. The air-cooled heat exchanger is fixedly interconnected with the expansion tank. A circulating oil pump is fixedly connected to the top of the test platform plate. The circulating oil pump is fixedly interconnected with the air-cooled heat exchanger. A heating box is fixedly connected to the top of the test platform plate. The heating box is fixedly interconnected with the circulating oil pump. A cooling oil inlet pipe is fixedly interconnected to the outer wall of the heating box. A piping mechanism is provided on the top of the test platform plate.

[0007] Preferably, the piping system includes a hydrogen-rich gas inlet pipe and an air outlet pipe. Multiple first piping supports are fixedly connected to the top of the test platform plate. The outer walls of the multiple first piping supports are fixedly connected to the outer walls of the hydrogen-rich gas inlet pipe and the air outlet pipe. A second piping support is fixedly connected to the top of the test platform plate. The outer walls of the second piping support are fixedly connected to a cooling oil outlet pipe, a hydrogen-rich gas outlet pipe, and an air inlet pipe. The cooling oil outlet pipe is fixedly interconnected with the plate heat exchanger, and the air inlet pipe is fixedly interconnected with the plate heat exchanger. This piping system facilitates testing of the fuel cell stack.

[0008] Preferably, a first temperature sensor is fixedly installed on the outer wall of the cooling oil inlet pipe, and a fourth temperature sensor is fixedly installed on the outer wall of the cooling oil outlet pipe. The first temperature sensor detects the temperature of the cooling oil in the cooling oil inlet pipe.

[0009] Preferably, a second temperature sensor is fixedly installed on the outer wall of the hydrogen-rich gas inlet pipe, and a fifth temperature sensor is fixedly installed on the outer wall of the hydrogen-rich gas outlet pipe. The second temperature sensor detects the temperature of the gas inside the hydrogen-rich gas inlet pipe.

[0010] Preferably, a third temperature sensor is fixedly installed on the outer wall of the air outlet pipe, and a sixth temperature sensor is fixedly installed on the outer wall of the air inlet pipe. The third temperature sensor detects the temperature of the air inside the air outlet pipe.

[0011] Preferably, the cooling oil inlet pipe is fixedly connected to the outer wall of the first pipeline support.

[0012] Preferably, ball valves are fixedly installed on the outer walls of both the cooling oil inlet pipe and the cooling oil outlet pipe. By setting ball valves, the overflow of cooling oil in the oil circuit can be effectively controlled.

[0013] Preferably, a pressure sensor is fixedly embedded in the outer wall of the air-cooled heat exchanger.

[0014] Compared with the prior art, the advantages of the present invention are as follows:

[0015] This solution features a test platform plate, support corner plates, a fan, a plate heat exchanger, an expansion tank, a flow meter, an air-cooled heat exchanger, a circulating oil pump, a heating box, cooling oil inlet pipe, hydrogen-rich gas inlet pipe, air outlet pipe, cooling oil outlet pipe, hydrogen-rich gas outlet pipe, air inlet pipe, and ball valves. The overall structure is compact with small pipeline volume, which facilitates dynamic engine operation and reduces test deviations. At the same time, the inlet and outlet ball valves can effectively control the overflow of cooling oil in the oil circuit, reducing cooling oil waste. Attached Figure Description

[0016] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural schematic diagram of an oil-circulating cooled fuel cell stack test platform proposed in this invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the first part of an oil-circulating cooled fuel cell stack test platform proposed in this invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the second part of an oil-circulating cooled fuel cell stack test platform proposed in this invention.

[0020] In the diagram: 1. Test platform plate; 2. Supporting corner plate; 3. Fan; 4. Plate heat exchanger; 5. Expansion tank; 6. Flow meter; 7. Air-cooled heat exchanger; 8. Circulating oil pump; 9. Heating box; 10. Cooling oil inlet pipe; 11. First temperature sensor; 12. First pipeline support; 13. Hydrogen-rich gas inlet pipe; 14. Air outlet pipe; 15. Second temperature sensor; 16. Third temperature sensor; 17. Second pipeline support; 18. Cooling oil outlet pipe; 19. Hydrogen-rich gas outlet pipe; 20. Air inlet pipe; 21. Fourth temperature sensor; 22. Fifth temperature sensor; 23. Sixth temperature sensor; 24. Pressure sensor; 25. Ball valve. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] Depend on Figures 1-3 As shown, a test platform for an oil-circulating cooled fuel cell stack is disclosed, comprising a test platform plate 1, a support corner plate 2 fixedly connected to the top of the test platform plate 1, a fan 3 fixedly connected to the outer wall of the support corner plate 2, the support corner plate 2 supporting the fan 3, a plate heat exchanger 4 fixedly connected to the top of the test platform plate 1, a flow meter 6 fixedly connected to the outer wall of the plate heat exchanger 4, the flow meter 6 calculating the flow rate based on the volume of the airflow passing through the pipe, the fan 3, the plate heat exchanger 4 and the flow meter 6 being fixedly interconnected via existing pipes, an expansion tank 5 fixedly connected to the top of the test platform plate 1, the expansion tank 5 being fixedly interconnected with the plate heat exchanger 4 via existing pipes, and an air-cooled heat exchanger 7 fixedly connected to the top of the test platform plate 1, the air-cooled heat exchanger 7 cooling the cooling oil, and the air after heat exchange entering the fuel cell stack to react with the hydrogen-rich gas.

[0024] A pressure sensor 24 is fixedly embedded in the outer wall of the air-cooled heat exchanger 7. When pressure is applied to the piezoelectric material on the pressure sensor 24, the charge distribution inside the material changes, thereby generating charge. By measuring these charges, the magnitude of the pressure can be obtained.

[0025] The air-cooled heat exchanger 7 and the expansion tank 5 are fixedly connected through existing pipelines. The top of the test platform plate 1 is fixedly connected to a circulating oil pump 8, which realizes closed-loop circulation of oil cooling. The circulating oil pump 8 and the air-cooled heat exchanger 7 are fixedly connected through existing pipelines. The top of the test platform plate 1 is fixedly connected to a heating box 9. During initial startup, the heating box 9 electrically heats the cooling oil to raise its temperature. The heating box 9 and the circulating oil pump 8 are fixedly connected through existing pipelines. The outer wall of the heating box 9 is fixedly connected to a cooling oil inlet pipe 10. A first temperature sensor 11 is fixedly installed on the outer wall of the cooling oil inlet pipe 10. The first temperature sensor 11 detects the temperature of the cooling oil in the cooling oil inlet pipe 10.

[0026] The top of the test platform plate 1 is equipped with a pipeline mechanism, which includes a hydrogen-rich gas inlet pipe 13 and an air outlet pipe 14. A second temperature sensor 15 is fixedly installed on the outer wall of the hydrogen-rich gas inlet pipe 13 to detect the temperature of the gas in the hydrogen-rich gas inlet pipe 13. A third temperature sensor 16 is fixedly installed on the outer wall of the air outlet pipe 14 to detect the temperature of the air in the air outlet pipe 14.

[0027] Multiple first pipeline supports 12 are fixedly connected to the top of the test platform plate 1. The outer walls of the multiple first pipeline supports 12 are fixedly connected to the outer walls of the hydrogen-rich gas inlet pipe 13 and the air outlet pipe 14. The cooling oil inlet pipe 10 is fixedly connected to the outer walls of the first pipeline supports 12. A second pipeline support 17 is fixedly connected to the top of the test platform plate 1. The outer walls of the second pipeline support 17 are fixedly connected to the cooling oil outlet pipe 18, the hydrogen-rich gas outlet pipe 19 and the air inlet pipe 20. Ball valves 25 are fixedly installed on the outer walls of the cooling oil inlet pipe 10 and the cooling oil outlet pipe 18. The ball valves 25 can effectively control the overflow of cooling oil in the oil circuit.

[0028] A fourth temperature sensor 21 is fixedly installed on the outer wall of the cooling oil outlet pipe 18. The fourth temperature sensor 21 detects the cooling oil in the cooling oil outlet pipe 18. A fifth temperature sensor 22 is fixedly installed on the outer wall of the hydrogen-rich gas outlet pipe 19. The fifth temperature sensor 22 detects the hydrogen-rich gas in the hydrogen-rich gas outlet pipe 19. A sixth temperature sensor 23 is fixedly installed on the outer wall of the air inlet pipe 20. The sixth temperature sensor 23 detects the air temperature in the air inlet pipe 20. The cooling oil outlet pipe 18 and the plate heat exchanger 4 are fixedly interconnected through existing pipes. The air inlet pipe 20 and the plate heat exchanger 4 are also fixedly interconnected through existing pipes. The first temperature sensor 11, the second temperature sensor 15, the third temperature sensor 16, the fourth temperature sensor 21, the fifth temperature sensor 22, and the sixth temperature sensor 23 all measure temperature by utilizing the difference in thermoelectric potential generated by two different metals when the temperature changes. When the two metals are connected into a circuit, the temperature change will cause an electromotive force to be generated in the circuit. This electromotive force is proportional to the temperature, so the temperature can be determined by measuring the electromotive force.

[0029] Working principle: During operation, air is drawn into the plate heat exchanger 4 by the fan 3 through the flow meter 6 and exchanges heat with the cooling oil. The heated air then enters the test stack and reacts with hydrogen-rich gas to generate electricity. The hydrogen-rich gas enters the stack through the hydrogen-rich gas inlet pipe 13 and reacts with the air to generate electricity. The exhaust gas is discharged from the low-level outlet. The cooling oil is controlled by the ball valve 25 and enters the stack through the first temperature sensor 11 to cool the stack. It then enters the plate heat exchanger 4 through the cooling oil outlet pipe 18, the fourth temperature sensor 21, and the ball valve 25 to exchange heat with the air, achieving the purpose of cooling the oil and heating the air. The cooling oil enters the expansion tank 5 through the plate heat exchanger 4 and flows into the air-cooled heat exchanger 7 for cooling. The circulating oil pump 8 provides the power for oil circulation and pumps the oil into the heating tank 9 (to heat the cooling oil during initial startup). The oil then re-enters the test stack through the ball valve 25, realizing a closed-loop circulation for oil cooling. The inlet and outlet ball valves 25 can effectively control the overflow of cooling oil in the oil circuit and reduce the waste of cooling oil.

[0030] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the fan 3, plate heat exchanger 4, expansion tank 5, flow meter 6, air-cooled heat exchanger 7, circulating oil pump 8, heating box 9, first temperature sensor 11, second temperature sensor 15, third temperature sensor 16, fourth temperature sensor 21, fifth temperature sensor 22, sixth temperature sensor 23, pressure sensor 24, and ball valve 25 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is merely to illustrate the beneficial effects that this hardware structure improvement can achieve, based on common knowledge.

[0031] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A test platform for an oil-circulating cooled fuel cell stack, comprising a test platform plate (1), characterized in that, The top of the test platform plate (1) is fixedly connected to a support corner plate (2), and a fan (3) is fixedly connected to the outer wall of the support corner plate (2). A plate heat exchanger (4) is fixedly connected to the top of the test platform plate (1), and a flow meter (6) is fixedly connected to the outer wall of the plate heat exchanger (4). The fan (3), plate heat exchanger (4), and flow meter (6) are fixedly interconnected. An expansion tank (5) is fixedly connected to the top of the test platform plate (1), and the expansion tank (5) is fixedly interconnected with the plate heat exchanger (4). 1) The top of the test platform plate (1) is fixedly connected to an air-cooled heat exchanger (7), which is fixedly connected to the expansion tank (5). The top of the test platform plate (1) is fixedly connected to a circulating oil pump (8), which is fixedly connected to the air-cooled heat exchanger (7). The top of the test platform plate (1) is fixedly connected to a heating box (9), which is fixedly connected to the circulating oil pump (8). The outer wall of the heating box (9) is fixedly connected to a cooling oil inlet pipe (10). The top of the test platform plate (1) is provided with a pipeline mechanism.

2. The oil-circulating cooled fuel cell stack test platform according to claim 1, characterized in that, The piping system includes a hydrogen-rich gas inlet pipe (13) and an air outlet pipe (14). The top of the test platform plate (1) is fixedly connected to a plurality of first pipe supports (12). The outer walls of the plurality of first pipe supports (12) are fixedly connected to the outer walls of the hydrogen-rich gas inlet pipe (13) and the air outlet pipe (14). The top of the test platform plate (1) is fixedly connected to a second pipe support (17). The outer walls of the second pipe support (17) are fixedly connected to a cooling oil outlet pipe (18), a hydrogen-rich gas outlet pipe (19), and an air inlet pipe (20). The cooling oil outlet pipe (18) is fixedly connected to the plate heat exchanger (4), and the air inlet pipe (20) is fixedly connected to the plate heat exchanger (4).

3. The oil-circulating cooled fuel cell stack test platform according to claim 2, characterized in that, A first temperature sensor (11) is fixedly installed on the outer wall of the cooling oil inlet pipe (10), and a fourth temperature sensor (21) is fixedly installed on the outer wall of the cooling oil outlet pipe (18).

4. The oil-circulating cooled fuel cell stack test platform according to claim 2, characterized in that, A second temperature sensor (15) is fixedly installed on the outer wall of the hydrogen-rich gas inlet pipe (13), and a fifth temperature sensor (22) is fixedly installed on the outer wall of the hydrogen-rich gas outlet pipe (19).

5. The oil-circulating cooled fuel cell stack test platform according to claim 2, characterized in that, A third temperature sensor (16) is fixedly installed on the outer wall of the air outlet pipe (14), and a sixth temperature sensor (23) is fixedly installed on the outer wall of the air inlet pipe (20).

6. The oil-circulating cooled fuel cell stack test platform according to claim 2, characterized in that, The cooling oil inlet pipe (10) is fixedly connected to the outer wall of the first pipeline support (12).

7. The oil-circulating cooled fuel cell stack test platform according to claim 1, characterized in that, Ball valves (25) are fixedly installed on the outer walls of both the cooling oil inlet pipe (10) and the cooling oil outlet pipe (18).

8. The oil-circulating cooled fuel cell stack test platform according to claim 1, characterized in that, A pressure sensor (24) is fixedly embedded in the outer wall of the air-cooled heat exchanger (7).

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