Comprehensive performance test board for thermal management subsystem of hydrogen fuel cell

Abstract

The utility model relates to the technical field of hydrogen fuel cells, and discloses a comprehensive performance test board for a thermal management subsystem of a hydrogen fuel cell, which comprises a test loop system, a master control system, an auxiliary controller system, an actuator driver system, a high-voltage power supply system and a low-voltage power supply system, the auxiliary controller system, the actuator driver system, the high-voltage power supply system and the low-voltage power supply system are all connected with the test loop system, and the main control system is connected with the auxiliary controller system and the actuator driver system. According to the utility model, performance test mechanical interfaces and electrical interfaces of important parts such as electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters and radiators of different brands can be compatible, and parameter test requirements of performance test of important parts such as electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters and radiators of different brands can be met; and control and detection interfaces are kept consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to a comprehensive performance test bench for a hydrogen fuel cell thermal management subsystem. Background Art

[0002] When the hydrogen fuel cell engine is working, the stack will continuously generate heat, which will have a certain impact on the stable operation of the engine. On the one hand, as the temperature of the stack increases, the catalyst activity at the proton exchange membrane will increase accordingly, the speed of the hydrogen oxidation chemical reaction will also increase, and the performance of the stack will improve accordingly, which is a positive effect; on the other hand, if the temperature of the stack is too high, it will not only reduce the strength of the proton exchange membrane or even destroy the structure of the membrane, but also cause the water vapor inside the hydrogen fuel cell to be discharged, which will affect the wetting conditions of the proton exchange membrane and even cause dehydration, causing the conductivity of the proton membrane to decrease, and the performance of the stack will decrease; if the temperature of the stack is too low, it will cause the catalyst activity at the proton exchange membrane to decrease rapidly, the speed of the hydrogen oxidation chemical reaction will slow down, and the performance of the stack will decrease, which is a negative effect.

[0003] Therefore, the inside of the hydrogen fuel cell should be maintained in a suitable temperature range to ensure the normal and efficient operation of the battery. Generally, the optimal operating temperature range should be kept around 70-80°C.

[0004] The thermal management subsystem of a hydrogen fuel cell generally includes important components such as an electronic water pump, thermostat, intercooler, deionizer, PTC heater, and radiator. Their safety and reliability play a vital role in the stable operation of the fuel cell engine. It mainly circulates the coolant inside each important component to smoothly discharge the heat generated by the chemical reaction in the stack out of the system, so that the stack is maintained in the optimal operating temperature range of 70 to 80°C, thereby achieving the purpose of accurately controlling the temperature of the hydrogen-oxidation chemical reaction and ultimately maintaining the thermal balance in the stack.

[0005] However, currently, the electronic water pump, thermostat, intercooler, deionizer, PTC heater, radiator and other important parts of hydrogen fuel cell systems in China are mainly customized and developed based on customer needs. There are certain differences in the design ideas and solutions of different companies, and it is difficult to unify them. Moreover, during the testing process, if there is a mismatch, it is very easy to damage the core parts of the battery system, thereby causing damage to equipment and personnel. Utility Model Content

[0006] The main problem that the utility model solves is that the existing hydrogen fuel cell system's important components such as electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters, radiators, etc. have many brands and inconsistent interfaces, lack testing methods and equipment, and are directly assembled on the vehicle-mounted hydrogen fuel cell system, which can easily cause mismatches, equipment damage, personal injuries, etc., thereby affecting the safe and reliable use of the hydrogen fuel cell system.

[0007] In order to solve the above technical problems, the technical solution of the utility model is to provide a comprehensive performance test bench for the thermal management subsystem of a hydrogen fuel cell, including a test loop system, a main control system, an auxiliary controller system, an actuator driver system, a high-voltage power supply system and a low-voltage power supply system, wherein the auxiliary controller system, the actuator driver system, the high-voltage power supply system and the low-voltage power supply system are all connected to the test loop system, and the main control system is connected to the auxiliary controller system and the actuator driver system, wherein:

[0008] The test loop system includes an expansion water tank, a PTC heater, an electronic water pump, a first thermostat, a test object and a second thermostat, wherein the PTC heater, the electronic water pump, the first thermostat, the test object and the second thermostat are sequentially connected and connected end to end through a pipeline, and the expansion water tank is connected to the PTC heater;

[0009] The main control system includes a control cabinet, a test bench controller, a main control computer and control software, which are interconnected and controlled with the test loop system through the CAN protocol;

[0010] The auxiliary controller system controls the start, stop and speed regulation of the equipment;

[0011] Each drive structure of the actuator drive system is actuated;

[0012] The high voltage power supply system is used to provide DC power supply;

[0013] The low voltage power supply system is responsible for providing control power.

[0014] Optionally, the first thermostat includes a first thermostat left water outlet, a first thermostat right water outlet and a first thermostat water inlet, the first thermostat water inlet is connected to the electronic water pump, the first thermostat right water outlet is connected to the object to be tested, and the first thermostat left water outlet is connected to the PTC heater and the fifth solenoid valve.

[0015] Optionally, the opening degree of the first thermostat is 0°~90°. When the opening degree is 0°, the water inlet of the first thermostat is only connected with the left water outlet of the first thermostat. When the opening degree is greater than 0° and less than 90°, the water inlet of the first thermostat is connected with both the left water outlet of the first thermostat and the right water outlet of the first thermostat. When the opening degree is 90°, the water inlet of the first thermostat is only connected with the right water outlet of the first thermostat.

[0016] Optionally, the second thermostat includes a second thermostat left water outlet, a second thermostat right water outlet and a second thermostat water inlet, the second thermostat water inlet is connected to the object to be tested, the second thermostat left water outlet is connected to the PTC heater and the fifth solenoid valve, and the second thermostat left water outlet is connected in parallel with the first thermostat left water outlet.

[0017] Optionally, a second thermostat plug is provided on the right water outlet of the second thermostat.

[0018] Optionally, the opening of the second thermostat is 0° to 90°. When the opening is less than 90°, the water inlet of the second thermostat is only connected to the left water outlet of the second thermostat. When the opening is 90°, the second thermostat is closed.

[0019] Optionally, a first solenoid valve, a first pressure transmitter and a first temperature transmitter are sequentially provided on the pipeline from the PTC heater to the electronic water pump, a second pressure transmitter, a second temperature transmitter and a second solenoid valve are sequentially provided on the pipeline from the electronic water pump to the first thermostat, and a second mass flowmeter is provided on the pipeline from the first thermostat to the PTC heater.

[0020] Optionally, a third solenoid valve and a third pressure transmitter are provided in sequence on the pipeline from the electronic water pump to the object to be tested, a fourth pressure transmitter and a third temperature transmitter are provided on the pipeline from the object to be tested to the second thermostat, and a first mass flow meter and a fourth solenoid valve are provided in sequence on the left water outlet of the second thermostat.

[0021] Optionally, an expansion water tank return pipe is provided between the expansion water tank and the PTC heater.

[0022] Optionally, a test bench cabinet is also included, and the test loop system is arranged in the test bench cabinet and fixed by a pipe clamp.

[0023] In summary, the utility model has at least one of the following beneficial effects:

[0024] 1. The utility model can meet the performance test of important parts such as electronic water pump, thermostat, intercooler, deionizer, PTC heater, radiator, etc. for fuel cells with a power of 10 to 150 kW.

[0025] 2. The utility model is compatible with the mechanical interface and electrical interface of the performance test of important components such as electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters, radiators, etc. of different brands, and can meet the parameter testing requirements of the performance test of important components such as electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters, radiators, etc. of different brands, and the control and detection interfaces remain consistent.

[0026] 3. The utility model can be used as a separate system for operation test, can be conveniently transported and even disassembled and assembled, and is easy to maintain in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall layout of the utility model;

[0028] Figure 2 This is the principle diagram of the test loop system of the utility model;

[0029] Figure 3 This is the overall circuit schematic diagram of the utility model;

[0030] In the figure: 100, test loop system; 200, main control system; 300, auxiliary controller system; 400, actuator driver system; 500, high voltage power supply system; 600, low voltage power supply system; 700, test bench cabinet; 1, expansion tank; 2, PTC heater; 3, electronic water pump; 4, first thermostat; 5, object to be tested; 6, second thermostat; 7, first pressure transmitter; 8, second pressure transmitter; 9, third pressure transmitter; 10, fourth pressure transmitter; 11, first temperature transmitter; 12, second temperature transmitter; 13, third temperature transmitter; 14, first mass flow meter; 15, second mass flow meter; 16, first solenoid valve; 17, second solenoid valve; 1 8. The third solenoid valve; 19. The fourth solenoid valve; 20. The fifth solenoid valve; 101. The return pipe of the expansion tank; 201. The water inlet pipe of the PTC heater; 202. The water outlet pipe of the PTC heater; 301. The water inlet pipe of the electronic water pump; 302. The water outlet pipe of the electronic water pump; 401. The water inlet pipe of the first thermostat; 402. The left water outlet pipe of the first thermostat; 403. The right water outlet pipe of the first thermostat; 501. The water inlet pipe of the object to be tested; 502. The water outlet pipe of the object to be tested; 601. The plug of the second thermostat; K1. The water inlet of the first thermostat; K2. The left water outlet of the first thermostat; K3. The right water outlet of the first thermostat; K4. The water inlet of the second thermostat; K5. The left water outlet of the second thermostat; K6. The right water outlet of the second thermostat. DETAILED DESCRIPTION

[0031] The following combination Figure 1-3 The utility model is described in further detail.

[0032] The utility model discloses a comprehensive performance test bench for the thermal management subsystem of a hydrogen fuel cell. Figure 1, including a test loop system 100, a main control system 200, an auxiliary controller system 300, an actuator driver system 400, a high voltage power supply system 500, a low voltage power supply system 600 and a test bench cabinet 700, wherein the auxiliary controller system 300, the actuator driver system 400, the high voltage power supply system 500 and the low voltage power supply system 600 are all connected to the test loop system 100, the main control system 200 is connected to the auxiliary controller system 300 and the actuator driver system 400, the test loop system 100 is arranged in the test bench cabinet 700 and fixed by a pipe clamp, wherein,

[0033] The test loop system 100 includes an expansion water tank 1, a PTC heater 2, an electronic water pump 3, a first thermostat 4, a test object 5 and a second thermostat 6. The PTC heater 2, the electronic water pump 3, the first thermostat 4, the test object 5 and the second thermostat 6 are sequentially connected and connected end to end through pipelines. The expansion water tank 1 is connected to the PTC heater 2.

[0034] The main control system 200 includes a control cabinet, a test bench controller, a main control computer and control software, and is interconnected and controlled with the test loop system 100 through the CAN protocol;

[0035] The auxiliary controller system 300 controls the start, stop and speed regulation of the equipment;

[0036] The actuator driver system 400 drives each drive structure to actuate;

[0037] The high voltage power supply system 500 is used to provide a DC power supply;

[0038] The low voltage power supply system 600 is responsible for providing control power;

[0039] The test bench cabinet 700 can integrate and install all mechanical equipment, pipelines and other structural parts of the test bench in the cabinet, and fix them with various types of pipe clamps to ensure the normal operation of the thermal management subsystem path. If the test bench needs to be transferred, transported, or modified, the test bench cabinet 700 can be easily disassembled and reassembled.

[0040] The utility model can complete the following test functions:

[0041] 1. Characteristic test of electronic water pump: adjust the inlet and outlet pressure, temperature and flow rate of the electronic water pump according to the demand; test the characteristics of the water pump, and draw the relationship curve between the pressure, power, efficiency and flow rate of the electronic water pump at different speeds;

[0042] 2. Operation test of electronic water pump: change the use conditions of the electronic water pump according to the needs, such as overpressure, underpressure, overtemperature, overload, stalling, idling, etc., observe the operation status of the electronic water pump and its control feedback, and verify the stability of the electronic water pump's own protection program;

[0043] 3. Cyclic test of electronic water pump: set the cyclic working conditions according to the requirements, simulate the cyclic operation state of the electronic water pump, and verify the failure or durability of the electronic water pump;

[0044] 4. Test and collect the inlet and outlet pressure, temperature, and flow rate of the coolant at different temperatures and flow rates of the thermostat, intercooler, deionizer, PTC heater, and radiator, and automatically draw the flow resistance curve.

[0045] In a further embodiment, referring to Figure 2 The first thermostat 4 includes a first thermostat left water outlet K2, a first thermostat right water outlet K3 and a first thermostat water inlet K1. The first thermostat water inlet K1 is connected to the electronic water pump 3, the first thermostat right water outlet K3 is connected to the object to be tested 5, the first thermostat left water outlet K2 is connected to the PTC heater 2 and the fifth solenoid valve 20, and the opening of the first thermostat 4 is 0° to 90°. When the opening is 0°, the first thermostat water inlet K1 is only connected to the first thermostat left water outlet K2, that is, the coolant at the first thermostat water inlet K1 All flows to the left water outlet K2 of the first thermostat; when the opening is greater than 0° and less than 90°, the water inlet K1 of the first thermostat is connected to both the left water outlet K2 and the right water outlet K3 of the first thermostat, that is, the coolant at the water inlet K1 of the first thermostat flows to the left water outlet K2 and the right water outlet K3 of the first thermostat in proportion; when the opening is 90°, the water inlet K1 of the first thermostat is only connected to the right water outlet K3 of the first thermostat, that is, all the coolant at the water inlet K1 of the first thermostat flows to the right water outlet K3 of the first thermostat;

[0046] The second thermostat 6 includes a second thermostat left water outlet K5, a second thermostat right water outlet K6 and a second thermostat water inlet K4. The second thermostat water inlet K4 is connected to the object to be tested 5. The second thermostat left water outlet K5 is connected to the PTC heater 2 and the fifth solenoid valve 20. The second thermostat left water outlet K5 is connected in parallel with the first thermostat left water outlet K2. The second thermostat right water outlet K6 is provided with a second thermostat plug 601. The opening of the second thermostat 6 is 0° to 90°. When the opening is less than 90°, the water inlet K4 of the second thermostat is only connected to the left water outlet K5 of the second thermostat, and when the opening is 0°, all the coolant at the water inlet K4 of the second thermostat flows to the left water outlet K5 of the second thermostat. When the opening is greater than 0° and less than 90°, the coolant at the water inlet K4 of the second thermostat flows to the left water outlet K5 of the second thermostat at a proportional flow rate. When the opening is 90°, the second thermostat 6 is closed, that is, the coolant at the water inlet K4 of the second thermostat stops flowing.

[0047] In a further embodiment, a first solenoid valve 16, a first pressure transmitter 7 and a first temperature transmitter 11 are sequentially provided on the pipeline from the PTC heater 2 to the electronic water pump 3, a second pressure transmitter 8, a second temperature transmitter 12 and a second solenoid valve 17 are sequentially provided on the pipeline from the electronic water pump 3 to the first thermostat 4, a second mass flowmeter 15 is provided on the pipeline from the first thermostat 4 to the PTC heater 2, a third solenoid valve 18 and a third pressure transmitter 9 are sequentially provided on the pipeline from the electronic water pump 3 to the object to be tested 5, a fourth pressure transmitter 10 and a third temperature transmitter 13 are provided on the pipeline from the object to be tested 5 to the second thermostat 6, a first mass flowmeter 14 and a fourth solenoid valve 19 are sequentially provided on the left water outlet K5 of the second thermostat, and an expansion water tank return pipe 101 is provided between the expansion water tank 1 and the PTC heater 2.

[0048] Specifically, refer to Figure 3 The PTC heater 2 is connected to the first solenoid valve 16 through the PTC heater outlet pipe 202, the first solenoid valve 16 is connected to the electronic water pump 3 through the electronic water pump inlet pipe 301, the electronic water pump inlet pipe 301 is provided with a first pressure transmitter 7 and a first temperature transmitter 11 in sequence, the outlet of the electronic water pump 3 is connected to the second solenoid valve 17 through the electronic water pump outlet pipe 302, the electronic water pump outlet pipe 302 is provided with a second pressure transmitter 8 and a second temperature transmitter 12 in sequence, the second solenoid valve 17 is connected to the first thermostat water inlet K1 through the first thermostat inlet pipe 401, the second thermostat left outlet K5 is connected to the fifth solenoid valve 20 through the first thermostat left outlet pipe 402, the first thermostat right outlet K3 is connected to the third solenoid valve 18 through the first thermostat right outlet pipe 403, the third solenoid valve 18 is connected to the third solenoid valve 19 through the first thermostat right outlet pipe 404, The valve 18 is connected to the object to be tested 5 through the object to be tested water inlet pipe 501, and the object to be tested water inlet pipe 501 is provided with a third pressure transmitter 9. The object to be tested 5 is connected to the right water outlet K6 of the second thermostat through the object to be tested water outlet pipe 502, and the object to be tested water outlet pipe 502 is provided with a fourth pressure transmitter 10 and a third temperature transmitter 13. The left water outlet K5 of the second thermostat is connected to the first mass flowmeter 14 and the fourth solenoid valve 19 and communicates with the left water outlet pipe 402 of the first thermostat. The left water outlet pipe 402 of the first thermostat is also connected to the second mass flowmeter 15. The second mass flowmeter 15 is connected to the PTC heater 2 through the PTC heater water inlet pipe 201. The expansion water tank 1 is connected to the PTC heater water inlet pipe 201, and an expansion water tank return pipe 101 is also connected between the expansion water tank 1 and the PTC heater water inlet pipe 201;

[0049] Among them, the expansion water tank return pipe 101 is a long hose, and its two ends are plug-in connected to the expansion water tank 1 and the PTC heater inlet pipe 201 respectively; when the coolant temperature in the circulation loop increases, the coolant pressure will also increase accordingly. At this time, the expanded coolant will automatically flow back to the expansion water tank 1 through the expansion water tank return pipe 101 for storage; when the coolant temperature in the circulation loop decreases, the coolant pressure will also decrease accordingly. At this time, the coolant in the expansion water tank 1 will also be sucked back into the circulation loop for reuse; the PTC heater inlet pipe 201 is a curved pipe structure, and is connected to the PTC heater 2 and the second mass flowmeter 15 by a hose; the PTC heater outlet pipe 202 is a long hose, and its two ends are plug-in connected to the PTC heater 2 and the first solenoid valve 16; the electronic water pump inlet pipe 301 is a curved pipe structure, and is connected to the first solenoid valve 16 and the electronic The water pump 3 is connected with a hose; the electronic water pump outlet pipe 302 is connected with the electronic water pump 3 and the second solenoid valve 17 by a hose; the first thermostat water inlet pipe 401 is a long hose, and both ends are plug-in connected with the second solenoid valve 17 and the first thermostat 4; the left water outlet pipe 402 of the first thermostat is a four-way pipe structure, and is connected with the first thermostat 4, the second mass flowmeter 15, the fourth solenoid valve 19, and the fifth solenoid valve 20 by a hose; the right water outlet pipe 403 of the first thermostat is a long hose, and both ends are plug-in connected with the first thermostat 4 and the third solenoid valve 18; the water inlet pipe 501 of the object to be tested is a curved pipe structure, and is connected with the third solenoid valve 18 and the object to be tested 5 by a hose; the water outlet pipe 502 of the object to be tested is connected with the object to be tested 5 and the second thermostat 6 by a hose; the second thermostat plug 601 is connected with the second thermostat 6 by a hose, blocking the right water outlet K6 of the second thermostat.

[0050] The utility model includes two cycle test loops, referring to Figure 2 and Figure 3 (In the figure, A1 is the coolant inlet and A2 is the coolant outlet). Its working principle is:

[0051] 1. The first cycle test loop: This loop is mainly composed of an expansion water tank 1, a PTC heater 2, an electronic water pump 3, a first thermostat 4, and related instruments and valves; the PTC heater 2, the electronic water pump 3, and the first thermostat 4 of the first cycle test loop are used as test objects to replace and test products of different brands;

[0052] First, close the third solenoid valve 18, the fourth solenoid valve 19 and the fifth solenoid valve 20, and open the first solenoid valve 16 and the second solenoid valve 17, so that the first circulation loop is opened;

[0053] Then, the low-temperature coolant in the expansion water tank 1 enters the PTC heater 2 through the coolant inlet A1 for heating, and the heating temperature, time and other parameters are detected to simulate the low-temperature cold start of the actual hydrogen fuel cell stack; the heated coolant reaches a higher temperature value and flows into the electronic water pump 3, the heart of the hydrogen fuel cell thermal management subsystem, to reduce the temperature of the coolant by increasing the flow rate of the coolant to simulate how a large amount of heat in the actual hydrogen fuel cell stack is quickly and effectively dissipated using the electronic water pump; then, the coolant flows into the first thermostat 4 through the first thermostat water inlet K1. At this time, the right water outlet K3 of the first thermostat can no longer pass through. The flow rate of the left water outlet K2 of the first thermostat can be accurately adjusted by controlling the opening of the first thermostat 4 from 0° to 90°, and finally the coolant flows back to the PTC heater 2 to enter the next cycle.

[0054] The temperature of the circulation loop can be ensured to be within the optimal working range by properly controlling the parameters of the PTC heater 2, the electronic water pump 3 and the first thermostat 4. The fifth solenoid valve 20 can be opened to discharge the coolant in the first circulation loop, thereby detecting the matching performance of each device.

[0055] 2. Second cycle test loop: This loop is mainly composed of an expansion water tank 1, a PTC heater 2, an electronic water pump 3, a first thermostat 4, an object to be tested 5, a second thermostat 6, and related instruments and valves; the object to be tested 5 of the second cycle test loop can be an intercooler, a deionizer, a radiator and other equipment, and different brands of products can be replaced and tested;

[0056] First, close the fifth solenoid valve 20, open the first solenoid valve 16, the second solenoid valve 17, the third solenoid valve 18, and the fourth solenoid valve 19, then the second circulation loop is opened, and the low-temperature coolant in the expansion water tank 1 enters the PTC heater 2 from the coolant inlet A1 for heating, and detects the heating temperature, time and other parameters to simulate the low-temperature cold start of the actual hydrogen fuel cell stack; the heated coolant reaches a higher temperature value and flows into the heart of the hydrogen fuel cell thermal management subsystem, the electronic water pump 3, and the temperature of the coolant is reduced by increasing the flow rate of the coolant to simulate how a large amount of heat in the actual hydrogen fuel cell stack is quickly and effectively dissipated by the electronic water pump;

[0057] Then, the coolant flows into the first thermostat 4 through the first thermostat water inlet K1. By controlling the opening of the first thermostat 4 to 90°, all the coolant flows to the right water outlet K3 of the first thermostat, and then flows into the object to be tested 5. By controlling the opening of the second thermostat 6 to 0°~90°, the flow rate of the left water outlet K5 of the second thermostat is accurately adjusted.

[0058] By properly controlling the parameters of the PTC heater 2, the electronic water pump 3, the first thermostat 4, the object to be tested 5, and the second thermostat 6, the temperature of the circulation loop can be ensured to be within the optimal working range, thereby detecting the matching performance of each device, and opening the fifth solenoid valve 20 to discharge the coolant in the second circulation loop.

[0059] During the operation of the utility model, it is necessary to continuously collect and transmit performance parameters through pressure transmitters, temperature transmitters, flow meters, etc. The performance parameters mainly include: pressure and temperature before and after the electronic water pump 3; pressure before and after the object to be tested 5, temperature after the object to be tested 5; flow after the first thermostat 4; flow after the second thermostat 6. Finally, data can be sorted according to actual needs, and characteristic maps of the PTC heater 2, electronic water pump 3, first thermostat 4, object to be tested 5, and second thermostat 6 can be drawn, stored and printed in document format.

[0060] The utility model can meet the performance test of important parts such as electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters, radiators, etc. for hydrogen fuel cells of 10-150KW level; with slight modifications to a small number of mechanical and electrical components, it can be compatible with the mechanical interfaces and electrical interfaces of electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters, and radiators of different brands; with slight additions or modifications to the system and software, it can meet the parameter test requirements of electronic water pumps, thermostats, intercoolers, deionizers, PTC heaters, and radiators of different brands, and the control and detection interfaces remain consistent; the utility model can be used as a separate system for operation testing, can be conveniently transported or even disassembled and assembled, and is convenient for later maintenance and function changes. The bench testing, control, data acquisition and processing related software are open source to users; manual and automatic control can be realized for the operating condition test in the characteristic test, and the experimental data can be automatically collected, processed, displayed, stored and printed out in excel / pdf documents.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A comprehensive performance test bench for a hydrogen fuel cell thermal management subsystem, characterized in that: The invention comprises a test loop system (100), a main control system (200), an auxiliary controller system (300), an actuator driver system (400), a high voltage power supply system (500) and a low voltage power supply system (600), wherein the auxiliary controller system (300), the actuator driver system (400), the high voltage power supply system (500) and the low voltage power supply system (600) are all connected to the test loop system (100), and the main control system (200) is connected to the auxiliary controller system (300) and the actuator driver system (400), wherein: The test loop system (100) comprises an expansion water tank (1), a PTC heater (2), an electronic water pump (3), a first thermostat (4), an object to be tested (5) and a second thermostat (6); the PTC heater (2), the electronic water pump (3), the first thermostat (4), the object to be tested (5) and the second thermostat (6) are sequentially connected and connected end to end via a pipeline; the expansion water tank (1) is connected to the PTC heater (2); The main control system (200) includes a control cabinet, a test bench controller, a main control computer and control software, and is interconnected and controlled with the test loop system (100) via a CAN protocol; The auxiliary controller system (300) controls the start, stop and speed regulation of the equipment; Each drive structure of the actuator driver system (400) is actuated; The high voltage power supply system (500) is used to provide a DC power supply; The low voltage power supply system (600) is responsible for providing control power.

2. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 1 is characterized in that: The first thermostat (4) comprises a first thermostat left water outlet (K2), a first thermostat right water outlet (K3) and a first thermostat water inlet (K1), wherein the first thermostat water inlet (K1) is connected to the electronic water pump (3), the first thermostat right water outlet (K3) is connected to the object to be tested (5), and the first thermostat left water outlet (K2) is connected to the PTC heater (2) and the fifth solenoid valve (20).

3. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 2 is characterized in that: The opening degree of the first thermostat (4) is 0° to 90°. When the opening degree is 0°, the water inlet (K1) of the first thermostat is only connected to the left water outlet (K2) of the first thermostat. When the opening degree is greater than 0° and less than 90°, the water inlet (K1) of the first thermostat is connected to both the left water outlet (K2) of the first thermostat and the right water outlet (K3) of the first thermostat. When the opening degree is 90°, the water inlet (K1) of the first thermostat is only connected to the right water outlet (K3) of the first thermostat.

4. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 2, characterized in that: The second thermostat (6) comprises a second thermostat left water outlet (K5), a second thermostat right water outlet (K6) and a second thermostat water inlet (K4); the second thermostat water inlet (K4) is connected to the object to be tested (5); the second thermostat left water outlet (K5) is connected to the PTC heater (2) and the fifth solenoid valve (20); the second thermostat left water outlet (K5) is connected in parallel to the first thermostat left water outlet (K2).

5. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 4 is characterized in that: A second thermostat plug (601) is provided on the right water outlet (K6) of the second thermostat.

6. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 4, characterized in that: The opening degree of the second thermostat (6) is 0° to 90°. When the opening degree is less than 90°, the water inlet (K4) of the second thermostat is only connected to the left water outlet (K5) of the second thermostat. When the opening degree is 90°, the second thermostat (6) is closed.

7. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 4, characterized in that: A first solenoid valve (16), a first pressure transmitter (7) and a first temperature transmitter (11) are sequentially arranged on the pipeline from the PTC heater (2) to the electronic water pump (3); a second pressure transmitter (8), a second temperature transmitter (12) and a second solenoid valve (17) are sequentially arranged on the pipeline from the electronic water pump (3) to the first thermostat (4); and a second mass flow meter (15) is arranged on the pipeline from the first thermostat (4) to the PTC heater (2).

8. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 4, characterized in that: A third solenoid valve (18) and a third pressure transmitter (9) are provided in sequence on the pipeline from the electronic water pump (3) to the object to be measured (5); a fourth pressure transmitter (10) and a third temperature transmitter (13) are provided on the pipeline from the object to be measured (5) to the second thermostat (6); and a first mass flow meter (14) and a fourth solenoid valve (19) are provided in sequence on the left water outlet (K5) of the second thermostat.

9. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 1, characterized in that: An expansion water tank return pipe (101) is provided between the expansion water tank (1) and the PTC heater (2).

10. The comprehensive performance test bench for the hydrogen fuel cell thermal management subsystem according to claim 1, characterized in that: It also includes a test bench cabinet (700), in which the test loop system (100) is arranged and fixed by a pipe clamp.

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