A test system and test method for testing a simulated water thermal management system

Abstract

The present invention provides a test system for testing a simulated water thermal management system, wherein the water thermal management system includes a main heat dissipation system and an auxiliary heat dissipation system. The test system includes: a main water thermal test system and an auxiliary water thermal test system; the main water thermal test system communicates with the main heat dissipation system to measure the heat dissipation performance index of the main heat dissipation system; and the auxiliary water thermal test system communicates with the auxiliary heat dissipation system to measure the heat dissipation performance index of the auxiliary heat dissipation system. The fuel cell water thermal management test system of the present invention can quickly detect the operating status of the fuel cell engine by simulating different temperatures, and can debug, optimize and improve the water thermal management of the fuel cell engine through controllable operating temperature, pressure, flow rate and flow rate.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a test system and a test method for testing a simulated water thermal management system. Background Art

[0002] Proton exchange membrane fuel cell engines are power generation devices that directly convert chemical energy into electrical energy. They offer advantages such as high energy conversion efficiency, low noise, a wide range of fuel sources, zero pollution, fast startup, and high output current, and hold broad application prospects. However, the output performance of fuel cell engines is affected by many factors, with temperature being particularly important. A sound hydrothermal management system can improve fuel cell engine performance and battery life. Conversely, improper hydrothermal management can reduce fuel cell engine performance, shorten its lifespan, and even cause experimental safety accidents. Therefore, testing the hydrothermal management system of fuel cell engines is of great significance.

[0003] Existing tests only test the generated heat and water separately, which cannot accurately simulate the working environment of the fuel cell, and thus cannot fully test the fuel cell water thermal management system, and cannot achieve the purpose of optimizing the water thermal management system.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The first purpose of the present invention is to provide a test system for testing a simulated water thermal management system. The test system can simulate the working environment of the water thermal management system and realize the working test function under various temperature environments. The test function is comprehensive and the measurement accuracy is high. It can quickly detect the working status of the fuel cell engine and realize the detection, debugging, optimization and product improvement of the water thermal management of the fuel cell engine through controllable working temperature, pressure, flow rate and flow.

[0006] The second purpose of the present invention is to provide a testing method for a fuel cell water thermal management system. By applying the above-mentioned testing system for testing a simulated water thermal management system, the working status of the water thermal management system under different temperature environments is tested. The operation is simple and is conducive to the optimization of the water thermal management system.

[0007] In order to achieve the above-mentioned purpose of the present invention, the following technical solutions are adopted:

[0008] The present invention provides a test system for testing a simulated water thermal management system, wherein the water thermal management system includes a main heat dissipation system and an auxiliary heat dissipation system, and the test system includes: a main water thermal test system and an auxiliary water thermal test system; the main water thermal test system is communicated with the main heat dissipation system to measure the heat dissipation performance index of the main heat dissipation system; the auxiliary water thermal test system is communicated with the auxiliary heat dissipation system to measure the heat dissipation performance index of the auxiliary heat dissipation system; the heat dissipation performance index of the main heat dissipation system includes any one or more of the temperature and pressure of the cooling water inlet of the main heat dissipation system, the temperature and pressure of the cooling water outlet of the main heat dissipation system and the cooling water flow rate of the main heat dissipation system; the heat dissipation performance index of the auxiliary radiator includes any one or more of the temperature and pressure of the cooling water inlet of the auxiliary heat dissipation system, the temperature and pressure of the cooling water outlet of the auxiliary heat dissipation system and the cooling water flow rate of the auxiliary heat dissipation system.

[0009] In the existing technology, the test of the water thermal management system only tests the generated heat and water separately, which cannot accurately simulate the working environment of the fuel cell, and thus cannot fully test the fuel cell water thermal management system, and cannot achieve the purpose of optimizing the water thermal management system.

[0010] In order to solve the above technical problems, the present invention provides a fuel cell water thermal management test system, which can quickly detect the working status of the fuel cell engine by simulating different temperatures, and realize the debugging, optimization and product improvement of the fuel cell engine water thermal management through controllable working temperature, pressure, flow rate and flow rate.

[0011] Preferably, the main hydrothermal test system includes a fuel cell stack connected to the cooling water outlet of the main heat dissipation system; the fuel cell stack is connected to a first bus, a first heat exchanger, a cold water tank, a first constant flow regulating valve and a second bus in sequence; the second bus is connected to the cooling water inlet of the main heat dissipation system; a thermometer is provided between the first constant flow regulating valve and the second bus to measure the temperature of the main heat dissipation system inlet; a thermometer and a pressure gauge are provided between the fuel cell stack and the first bus to measure the temperature and pressure of the main heat dissipation system outlet. The main hydrothermal test system is used to detect the inlet and outlet temperatures and pressures of the main heat dissipation system of the hydrothermal management system to be tested, thereby optimizing the main heat dissipation system. The fuel cell stack is equivalent to a heat source, and the first constant flow regulating valve can adjust the cooling water flow in the pipeline, thereby realizing dynamic simulation of the main heat dissipation system.

[0012] Preferably, the auxiliary hydrothermal test system includes the first bus connected to the cooling water outlet of the auxiliary cooling system; the first bus is connected in sequence to the first heat exchanger, the cold water tank, the third solenoid valve, the second constant flow regulating valve and the third bus; the third bus is connected to the cooling water inlet of the auxiliary cooling system; a thermometer is provided between the second constant flow regulating valve and the third bus to measure the temperature of the auxiliary cooling system inlet; a thermometer and a pressure gauge are provided between the first bus and the auxiliary cooling system to measure the temperature and pressure of the auxiliary cooling system outlet. The auxiliary hydrothermal test system is used to detect the auxiliary cooling system of the hydrothermal management system to be tested, and the second constant flow regulating valve can adjust the cooling water flow in the pipeline, thereby realizing dynamic simulation of the auxiliary cooling system.

[0013] Preferably, the test system further includes a first expansion water tank and a second expansion water tank for replenishing cooling water to the system; the first expansion water tank is connected to the second expansion water tank, the primary hydrothermal test system, and the auxiliary hydrothermal test system, respectively. The first and second expansion water tanks can provide sufficient cooling water to the primary and auxiliary hydrothermal test systems and replenish water losses in real time, ensuring test accuracy.

[0014] Preferably, a heater is provided in the second expansion water tank; the second expansion water tank is connected to the first constant flow regulating valve and the second constant flow regulating valve, respectively. The heater in the second expansion water tank can preheat the cooling water and adjust the heating temperature of the cooling water according to actual needs.

[0015] Preferably, the second expansion water tank is connected to the first busbar via a second heat exchanger. When the system under test needs to be tested at high temperature, the water flows through the second heat exchanger to the second expansion tank, is reheated by the heater, and then flows into the pipeline.

[0016] Preferably, a first flow meter is provided between the fuel cell stack and the first busbar, through which the cooling water flow of the main water thermal management system can be monitored in real time.

[0017] Preferably, the auxiliary hydrothermal test system is provided with a second flow meter to measure the circulating cooling water flow of the auxiliary hydrothermal test system. The second flow meter facilitates real-time monitoring of the cooling water flow of the auxiliary heat dissipation system.

[0018] Preferably, the above-mentioned test system further includes a power supply system, which is connected to the water thermal management system to be tested to provide the electric energy required for the operation of the water thermal management system to be tested.

[0019] Preferably, the above-mentioned test system further includes an air-conditioning system, which is used to adjust the ambient temperature, thereby simulating different working environments and detecting the working status of the water thermal management system under different temperature environments.

[0020] Preferably, the main cooling system includes a first water pump, a thermostat and a first radiator connected in sequence; the auxiliary cooling system includes a second water pump, a DC / DC converter, an air compressor controller, an air compressor motor and a second radiator connected in sequence.

[0021] The present invention also provides a test method for testing a simulated water thermal management system, and the test is performed using the above-mentioned test system for testing a simulated water thermal management system.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The fuel cell water thermal management test system of the present invention can quickly detect the working status of the fuel cell engine by simulating different temperatures, and realize the debugging, optimization and product improvement of the fuel cell engine water thermal management through controllable working temperature, pressure, flow rate and flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0025] Figure 1 A schematic structural diagram of a test system for testing a simulated water thermal management system provided by an embodiment of the present invention.

[0026] in:

[0027] 10-first expansion water tank; 20-second expansion water tank;

[0028] 30-heater; 40-second heat exchanger;

[0029] 50-first solenoid valve; 60-first busbar;

[0030] 70-first heat exchanger; 80-cold water tank;

[0031] 90-fourth solenoid valve; 100-second solenoid valve;

[0032] 110-third solenoid valve; 120-third one-way valve;

[0033] 130-first constant flow regulating valve; 140-second constant flow regulating valve;

[0034] 150-second busbar; 160-third busbar;

[0035] 170-second water pump; 180-first water pump;

[0036] 190-DC / DC converter; 200-thermostat;

[0037] 210-air compressor controller; 220-air compressor motor;

[0038] 230-first radiator; 240-second radiator;

[0039] 250-differential pressure gauge; 260-fuel cell stack;

[0040] 270-3kW high-voltage power supply cabinet; 280-5kW high-voltage power supply cabinet;

[0041] 290-first flow meter; 300-first one-way valve;

[0042] 310 - second flow meter; 320 - second one-way valve;

[0043] 330-fifth solenoid valve; 340-sixth solenoid valve. DETAILED DESCRIPTION

[0044] The technical scheme of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but it will be understood by those skilled in the art that the following described embodiments are part of embodiments of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. Those who do not specify specific conditions in the embodiments are carried out according to normal conditions or the conditions recommended by the manufacturer. Those whose reagents or instruments are not specified by the manufacturer are conventional products that can be purchased commercially.

[0045] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0047] In order to more clearly illustrate the technical solutions of the present invention, specific embodiments are provided below for illustration.

[0048] Example

[0049] See Figure 1 As shown, this embodiment provides a test system for testing a simulated water thermal management system, wherein: Figure 1 The dotted box in the middle is the water and heat management system to be tested. The water and heat management system includes the main heat dissipation system and the auxiliary heat dissipation system. The test system includes: a main water and heat test system and an auxiliary water and heat test system; the main water and heat test system is connected to the main heat dissipation system to measure the heat dissipation performance indicators of the main heat dissipation system; the auxiliary water and heat test system is connected to the auxiliary heat dissipation system to measure the heat dissipation performance indicators of the auxiliary heat dissipation system; the heat dissipation performance indicators of the main heat dissipation system include the temperature and pressure of the cooling water inlet of the main heat dissipation system, the temperature and pressure of the cooling water outlet of the main heat dissipation system and the cooling water flow rate of the main heat dissipation system, any one or more of them; the heat dissipation performance indicators of the auxiliary radiator include the temperature and pressure of the cooling water inlet of the auxiliary heat dissipation system, the temperature and pressure of the cooling water outlet of the auxiliary heat dissipation system and the cooling water flow rate of the auxiliary heat dissipation system.

[0050] In this embodiment, the main hydrothermal test system includes a fuel cell stack 260 connected to the cooling water outlet of the main heat dissipation system; the fuel cell stack 260 is connected in sequence to the first bus 60, the first heat exchanger 70, the cold water tank 80, the first constant flow regulating valve 130 and the second bus 150; the second bus 150 is connected to the cooling water inlet of the main heat dissipation system; a thermometer is arranged between the first constant flow regulating valve 130 and the second bus 150 to measure the temperature of the main heat dissipation system inlet; a thermometer and a pressure gauge are arranged between the fuel cell stack 260 and the first bus 60 to measure the temperature and pressure of the main heat dissipation system outlet.

[0051] Among them, a first one-way valve 300 is provided between the first bus 60 and the main heat dissipation system. The fuel cell stack 260 is equivalent to a heat source. The first constant flow regulating valve 130 can adjust the cooling water flow in the pipeline, thereby realizing the dynamic simulation of the main heat dissipation system. A first flowmeter 290 is provided between the fuel cell stack 260 and the first bus 60 to measure the circulating cooling water flow of the main hydrothermal test system. A thermometer is also provided between the fuel cell stack 260 and the first one-way valve 300 to measure the temperature of the cooling water outlet of the fuel cell stack 260. A fourth solenoid valve 90 is provided between the cold water tank 80 and the first constant flow regulating valve 130. In order to measure the inlet and outlet pressure difference of the fuel cell stack 260 in real time, a differential pressure gauge 250 is connected in parallel to the fuel cell stack 260.

[0052] The auxiliary hydrothermal testing system includes a first bus 60 connected to the cooling water outlet of the auxiliary cooling system; the first bus 60 is connected in sequence to the first heat exchanger 70, the cold water tank 80, the third solenoid valve 110, the second constant flow regulating valve 140 and the third bus 160; the third bus 160 is connected to the cooling water inlet of the auxiliary cooling system; a thermometer is arranged between the second constant flow regulating valve 140 and the third bus 160 to measure the temperature of the auxiliary cooling system inlet; a thermometer and a pressure gauge are arranged between the first bus 60 and the auxiliary cooling system to measure the temperature and pressure of the auxiliary cooling system outlet.

[0053] Specifically, a second flowmeter 300 is provided on the auxiliary hydrothermal test system to measure the circulating cooling water flow of the auxiliary hydrothermal test system. In this embodiment, the second flowmeter 310 is arranged between the first bus 60 and the auxiliary heat dissipation system. A second one-way valve 320 is also provided between the first bus 60 and the auxiliary heat dissipation system. A third one-way valve 120 is installed between the third solenoid valve 110 and the second constant flow regulating valve 140. The auxiliary hydrothermal test system is used to detect the auxiliary heat dissipation system of the hydrothermal management system to be tested, so as to optimize the auxiliary heat dissipation system. The second constant flow regulating valve 140 can adjust the cooling water flow in the pipeline, so as to realize dynamic simulation of the auxiliary heat dissipation system.

[0054] In this embodiment, the test system further includes a first expansion water tank 10 and a second expansion water tank 20 for replenishing cooling water to the system. The first expansion water tank 10 is connected to the second expansion water tank 20, the main hydrothermal test system, and the auxiliary hydrothermal test system. A fifth solenoid valve 330 is installed between the first expansion water tank 10 and the first one-way valve 300; a sixth solenoid valve 340 is installed between the first expansion water tank 10 and the second one-way valve 320; and a two-way valve is installed between the first expansion water tank 10 and the second expansion water tank 20. The first and second expansion water tanks 10, 20 provide sufficient cooling water for the main and auxiliary hydrothermal test systems, replenishing losses in real time and ensuring test accuracy.

[0055] Specifically, the second expansion tank 20 is equipped with a thermometer and a heater 30. The second expansion tank 20 is connected to the first constant flow regulating valve 130 and the second constant flow regulating valve 140, respectively. To facilitate the addition of coolant, a first solenoid valve 50 is installed between the second expansion tank 20 and the first constant flow regulating valve 130, and a second solenoid valve 100 is installed between the second expansion tank 20 and the second constant flow regulating valve 140. The heater 30 in the second expansion tank 20 preheats the cooling water and can adjust the cooling water temperature according to actual needs.

[0056] Specifically, the second expansion tank 20 is connected to the first bus 60 via the second heat exchanger 40. When the system under test needs to be tested at high temperature, the water flows through the second heat exchanger 40 to the second expansion tank, is heated by the heater 30, and then flows into the pipeline.

[0057] In this embodiment, the test system further includes a power supply system, which is connected to the water thermal management system to provide the electrical energy required for the operation of the water thermal management system.

[0058] The above-mentioned test system also includes an air-conditioning system, which is used to adjust the ambient temperature, thereby simulating different working environments and testing the working status of the water thermal management system under different temperature environments.

[0059] In this embodiment, the main cooling system includes a first water pump 180, a thermostat 200, and a first radiator 230 connected in sequence. The first water pump 180 serves as the cooling water inlet of the main cooling system, and the first radiator 230 serves as the cooling water outlet of the main cooling system. The thermostat 200 is connected to the first radiator 230 and the fuel cell stack 260, respectively. The auxiliary cooling system includes a second water pump 170, a DC / DC converter 190, an air compressor controller 210, an air compressor motor 220, and a second radiator 240 connected in sequence. The second water pump 170 serves as the cooling water inlet of the auxiliary cooling system, and the second radiator 240 serves as the cooling water outlet of the auxiliary radiator. The DC / DC converter 190, the air compressor controller 210, and the air compressor motor 220 are equivalent to heat sources. In actual use, the water thermal management system is to dissipate heat and regulate temperature for these components to ensure reliable and efficient operation of the fuel cell engine.

[0060] In order to improve the test effect and obtain more accurate temperature and pressure parameters, temperature gauges and pressure gauges are installed between the first water pump 180 and the thermostat 200, between the second water pump 170 and the DC / DC converter 190, between the DC / DC converter 190 and the air compressor controller 210, between the air compressor controller 210 and the air compressor motor 220, and between the air compressor motor 220 and the second radiator 240 to measure the inlet and outlet temperatures and pressures of various components of the auxiliary cooling system in real time.

[0061] In addition, people skilled in the art should understand that the water thermal management system to be tested in this embodiment is only for illustrating the working process of the fuel cell water thermal management test system in this embodiment, and is not intended to limit the present invention. In actual use, the water thermal management system to be tested can be connected to the fuel cell water thermal management test system of this embodiment as needed.

[0062] To ensure the power supply effect, in this embodiment, the power supply system includes a 5kW high-voltage power supply cabinet 280 and a 3kW high-voltage power supply cabinet 270, wherein the 5kW high-voltage power supply cabinet 280 supplies power to the first water pump 180 and the second water pump 170, and the 3kW high-voltage power supply cabinet 270 supplies power to the first radiator 230 and the second radiator 240.

[0063] In this embodiment, the test method of the fuel cell water thermal management test system is as follows: during the test, the second bus 150 is connected to the first water pump 180 of the water thermal management system, the third bus 160 is connected to the second water pump 170 of the water thermal management system, the first radiator 230 is connected to the fuel cell stack 260, and the second radiator 240 is connected to the second one-way valve 320.

[0064] The first expansion water tank 10 and the second expansion water tank 20 provide cooling water to the main hydrothermal test system and the auxiliary hydrothermal test system. In the main hydrothermal test system, the fuel cell 260 simulates a heat source, and the cooling water flows into the first water pump 180 through the first constant flow regulating valve 130 and the second bus 150, and passes through the thermostat 200. When the cooling water is lower than the set temperature of the thermostat 200, the cooling water flows directly to the fuel cell 260. When the cooling water is higher than the set temperature of the thermostat 200, the cooling water flows to the fuel cell 260 after dissipating heat through the first radiator 230; after the cooling water exchanges heat with the fuel cell 260, it flows into the cold water tank 80 through the first flow meter 290, the first one-way valve 300, the first bus 60, and the first heat exchanger 70. The cooling water in the cold water tank 80 The first constant flow regulating valve 130 is entered again through the fourth solenoid valve 90 to realize the dynamic simulation of the main heat dissipation system, and the temperature on the cold water tank 80 is measured by the thermometer on the cold water tank 80, and the temperature at the inlet of the main heat dissipation system is measured by the thermometer set between the first constant flow regulating valve 130 and the second bus 150; the temperature and pressure at the outlet of the main heat dissipation system are measured by the thermometer and pressure gauge set between the battery stack 260 and the first bus 60, the inlet and outlet pressure difference of the cooling water of the battery stack 260 is measured by the pressure differential meter 250 connected in parallel with the battery stack 260, the outlet cooling water temperature of the battery stack 260 is measured by the thermometer set between the battery stack 260 and the first bus 60, and the cooling water flow in the main heat dissipation system is measured by the first flow meter 290.

[0065] In the auxiliary hydrothermal test system, the cooling water flows into the second water pump 170 through the second constant flow regulating valve 140 and the third bus 160, and then passes through the DC / DC converter 190, the air compressor controller 210, and the air compressor motor 220 to the second radiator 240 to realize heat interaction. The cooling water flows into the cold water tank 80 through the second flow meter 310, the second one-way valve 320, the first bus 60, and the first heat exchanger 70. The cooling water in the cold water tank 80 flows into the second constant flow regulating valve 140 again through the third solenoid valve 110 and the third one-way valve 120. The valve realizes the dynamic simulation of the auxiliary cooling system. The temperature at the inlet of the auxiliary cooling system is measured by a thermometer arranged between the second constant flow regulating valve 140 and the third bus 160, and the temperature and pressure of the cooling water inlets of the DC / DC converter 190, the air compressor controller 210 and the air compressor motor 220 are measured by thermometers and pressure gauges arranged at their respective cooling water inlets. The temperature and pressure of the cooling water inlet and outlet of the second radiator 240 are measured by thermometers and pressure gauges respectively arranged at the cooling water inlet and outlet of the second radiator 240, and the cooling water flow of the auxiliary cooling system is measured by the second flowmeter 310.

[0066] During actual testing, the ambient temperature can also be adjusted through the air-conditioning system, and the cooling water flow in the pipeline can be adjusted through the first constant flow regulating valve 130 and the second constant flow regulating valve 140 to achieve real-time dynamic simulation of the water thermal management system to be tested. The cooling water temperature can be adjusted through the heater 30 to test the working status of the water thermal management system at different temperatures. According to the measured inlet and outlet temperatures and pressures of the main cooling system and the auxiliary cooling system, the optimal working status of the main cooling system and the auxiliary cooling system can be obtained.

[0067] The parameters that need to be measured in this embodiment are shown in the following table:

[0068] parameter unit Measuring range Number Constant flow control valve outlet temperature ℃ -30～100 2 Pump outlet pressure Bar 0～3 2 Pump outlet temperature ℃ -30～100 2 Circulating cooling water flow of the main cooling system L / min 0～400 1 Stack cooling water inlet temperature ℃ -30～100 1 Stack cooling water inlet pressure Bar 0～3 1 Stack cooling water outlet temperature ℃ -30～100 1 Stack cooling water inlet and outlet pressure difference Bar 0～1 1 Second expansion tank temperature ℃ 0～100 1 Cold water tank temperature ℃ -30～100 1 Auxiliary cooling system circulating cooling water flow L / min 0～100 1 Inlet temperature of the tested component of the auxiliary cooling system ℃ -30～100 3 Inlet pressure of the tested component of the auxiliary cooling system Bar 0～3 3 Second radiator inlet temperature ℃ -30～100 1 Second radiator inlet pressure Bar 0～3 1

[0069] In the above table, the measurement position can be adjusted according to actual needs, and a thermometer and a pressure gauge can be set at the corresponding position. The measurement range refers to the range that the fuel cell water thermal management test system of this embodiment can measure. The tested components of the auxiliary heat dissipation system refer to the DC / DC converter 190, the air compressor controller 210 and the air compressor motor 220, and their inlet pressure and temperature can be measured by setting a thermometer and a pressure gauge at their inlet; the inlet temperature and pressure of the stack cooling water are the temperature and pressure of the main heat dissipation system outlet. In addition, it should be noted that the various components in this embodiment are existing components, and the number of thermometers and pressure gauges can be increased according to actual measurement needs, as long as the above-mentioned measurement range can be met.

[0070] In summary, the fuel cell water thermal management test system of the present invention can quickly detect the working status of the fuel cell engine by simulating different temperatures, and realize the debugging, optimization and product improvement of the fuel cell engine water thermal management through controllable working temperature, pressure, flow rate and flow rate.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A test system for testing a simulated water thermal management system, wherein the water thermal management system includes a main heat dissipation system and an auxiliary heat dissipation system, characterized in that: The test system includes: a main hydrothermal test system and an auxiliary hydrothermal test system; the main hydrothermal test system is communicated with the main cooling system to measure the heat dissipation performance index of the main cooling system; the auxiliary hydrothermal test system is communicated with the auxiliary cooling system to measure the heat dissipation performance index of the auxiliary cooling system; the heat dissipation performance index of the main cooling system includes any one or more of the temperature and pressure of the cooling water inlet of the main cooling system, the temperature and pressure of the cooling water outlet of the main cooling system and the cooling water flow rate of the main cooling system; the heat dissipation performance index of the auxiliary cooling system includes any one or more of the temperature and pressure of the cooling water inlet of the auxiliary cooling system, the temperature and pressure of the cooling water outlet of the auxiliary cooling system and the cooling water flow rate of the auxiliary cooling system; The main hydrothermal test system includes a fuel cell stack connected to the cooling water outlet of the main heat dissipation system; the fuel cell stack is sequentially connected to a first busbar, a first heat exchanger, a cold water tank, a first constant flow regulating valve, and a second busbar; the second busbar is connected to the cooling water inlet of the main heat dissipation system; a thermometer is provided between the first constant flow regulating valve and the second busbar to measure the temperature of the main heat dissipation system inlet; a thermometer and a pressure gauge are provided between the fuel cell stack and the first busbar to measure the temperature and pressure of the main heat dissipation system outlet; The auxiliary hydrothermal testing system includes a first busbar connected to the cooling water outlet of the auxiliary cooling system; the first busbar is sequentially connected to the first heat exchanger, the cold water tank, the third solenoid valve, the second constant flow regulating valve and the third busbar; the third busbar is connected to the cooling water inlet of the auxiliary cooling system; a thermometer is provided between the second constant flow regulating valve and the third busbar to measure the temperature of the auxiliary cooling system inlet; a thermometer and a pressure gauge are provided between the first busbar and the auxiliary cooling system to measure the temperature and pressure of the auxiliary cooling system outlet; A first flow meter is provided between the fuel cell stack and the first busbar; The auxiliary hydrothermal testing system is provided with a second flow meter to measure the circulating cooling water flow of the auxiliary hydrothermal testing system.

2. The test system for testing a simulated water thermal management system according to claim 1, characterized in that: It also includes a first expansion water tank and a second expansion water tank for replenishing cooling water into the system; the first expansion water tank is connected to the second expansion water tank, the main hydrothermal test system and the auxiliary hydrothermal test system respectively.

3. The test system for testing a simulated water thermal management system according to claim 2, characterized in that: A heater is provided in the second expansion water tank; the second expansion water tank is connected to the first constant flow regulating valve and the second constant flow regulating valve respectively.

4. The test system for testing a simulated water thermal management system according to claim 2, characterized in that: The second expansion water tank is connected to the first busbar via a second heat exchanger.

5. The test system for testing a simulated water thermal management system according to claim 1, characterized in that: It also includes a power supply system, which is connected to the water thermal management system to provide the electrical energy required for the operation of the water thermal management system.

6. A test method for testing a simulated water thermal management system, characterized in that: The test is performed using the test system for testing a simulated water thermal management system as described in any one of claims 1 to 5.

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