A fuel cell stack simulation device for the development of fuel cell cooling subsystem

Abstract

The present invention seeks protection for a fuel cell stack simulation device used in the development of a fuel cell cooling subsystem, characterized in that it includes: a flow resistance simulation module and a heat generation simulation module, wherein the flow resistance simulation module is used for the coolant to enter a heat exchanger to exchange heat with the heat generation module, and then pass through a flow resistance regulating valve, and adjust the opening of the flow resistance regulating valve according to the pressure difference of the inlet and outlet pressure sensors to achieve simulated flow resistance; the heat dissipation of the cooling subsystem is calculated by the temperature difference and flow rate of the inlet and outlet temperature sensors; the heat generation simulation module: is used to control the cooling water inlet temperature of the heat generation simulation module through a heater and a chiller, control the cooling water flow rate through a water pump, and calculate the heat generation of the heat generation simulation module through the inlet and outlet temperature difference measured by the temperature sensor and the flow rate measured by the flow sensor; the theoretical heat generation of the fuel cell under various working conditions is calculated, and then the inlet water temperature and flow rate of the coolant are controlled to achieve alternative stack simulation heat generation.

Description

Technical Field

[0001] The invention relates to the field of fuel cell testing, and in particular to a fuel cell stack simulation device used in the development of a fuel cell cooling subsystem. Background Art

[0002] As a clean and efficient energy conversion technology, fuel cells have important application prospects in the fields of transportation and power generation. Fuel cells are one of the important technologies for the development of new energy due to their advantages such as high efficiency, cleanliness, silence, high energy density, renewability and flexibility, and are expected to become an important choice to replace traditional energy. Fuel cells generate a lot of heat during operation. If the heat cannot be dissipated in a timely and effective manner, the fuel cell will overheat. The operating temperature of the fuel cell is crucial to its performance and life. The fuel cell cooling subsystem can effectively control the temperature of the fuel cell to ensure that it operates within a suitable operating temperature range and improve the efficiency and stability of the system. At the same time, a good thermal management system can effectively extend the service life of the fuel cell system, reduce the damage of thermal stress to the material, reduce the aging rate of the system, and improve the reliability and stability of the system. Therefore, the matching test of the fuel cell cooling subsystem is an important part of the integrated development of the fuel cell system. In the development process of the traditional fuel cell cooling subsystem, a fuel cell stack matching its power level needs to be used as the test object. The cost and working cost of the fuel cell stack itself are very high, and the operation of the stack requires the use of hydrogen. At present, it is difficult to apply for the qualifications of hydrogen-related laboratories. The high cost and instability of using hydrogen have greatly hindered the matching development of the fuel cell cooling subsystem. In the existing fuel cell stack simulation heat generation technology, most of them directly use heaters to simulate the heat generation of the stack, but the efficiency of the resistive heaters on the market is not high and the heat exchange efficiency of the cooling water through the heater is uncertain, so it is impossible to complete the accurate simulation of the heat generation. In addition, a single heater simulated heat generation will be difficult to cool down during actual operation, and it is impossible to complete the dynamic load reduction test of the cooling subsystem. The flow resistance of the water channel in the fuel cell stack is an important parameter that affects the flow rate of the fuel cell cooling water, and it is also an important parameter for calibrating the speed of the cooling subsystem water pump. Most of the existing fuel cell cooling subsystem stack simulation devices do not simulate the flow resistance inside the fuel cell stack. Summary of the invention

[0003] The present invention aims to solve the above problems of the prior art. A fuel cell stack simulation device applied to the development of a fuel cell cooling subsystem is proposed. The technical solution of the present invention is as follows:

[0004] A fuel cell stack simulation device used in the development of a fuel cell cooling subsystem includes: a flow resistance simulation module and a heat generation simulation module, wherein the flow resistance simulation module is used for a coolant to enter a first heat exchanger to exchange heat with the heat generation simulation module, and then pass through a flow resistance regulating valve, and adjust the opening of the flow resistance regulating valve according to the pressure difference of an inlet and outlet pressure sensor to achieve a simulated flow resistance; the heat dissipation of the cooling subsystem is calculated by the temperature difference and flow rate of the inlet and outlet temperature sensors;

[0005] Heat generation simulation module: used to control the cooling water inlet temperature of the heat generation simulation module through the heater and the chiller, control the cooling water flow through the water pump, and calculate the heat generation of the heat generation simulation module through the inlet and outlet temperature difference measured by the temperature sensor and the flow measured by the flow sensor; calculate the theoretical heat generation of the fuel cell under various working conditions, and then control the inlet water temperature and flow of the coolant to achieve the simulated heat generation of the alternative fuel cell stack;

[0006] The flow resistance simulation module includes a first hand valve, a flow sensor, an inlet temperature sensor, an inlet pressure sensor, a proportional valve, an outlet pressure sensor, an outlet temperature sensor, a four-way valve, a drain valve, a second hand valve, an exhaust valve, an expansion water tank and a water supply valve, wherein one path of the first hand valve is sequentially connected to the flow sensor, the inlet temperature sensor and the inlet pressure sensor, and the other path is sequentially connected to the exhaust valve, the expansion water tank and the water supply valve, the inlet pressure sensor is sequentially connected to the proportional valve, the outlet pressure sensor and the outlet temperature sensor after passing through the first heat exchanger, and the four-way valve is respectively connected to the water supply valve, the drain valve, the second hand valve and the outlet temperature sensor;

[0007] The heat generation simulation module includes a first heat exchanger, a third hand valve and a fourth hand valve, a heat generation end outlet temperature sensor, a heat generation end outlet pressure sensor, a first three-way valve, a water pump, an electric heater, a temperature sensor, a second heat exchanger, a chiller, a second three-way valve, a heat generation end drain valve, a flow sensor, an exhaust valve, a heat generation end expansion water tank, a heat generation end water supply valve, a heat generation end inlet pressure sensor and a heat generation end inlet temperature sensor. The first heat exchanger passes through the third hand valve, the heat generation end outlet temperature sensor, the heat generation end outlet pressure sensor, the first three-way valve and The water pump is connected to the electric heater, the temperature sensor and the second heat exchanger in sequence, the water chiller is connected to the second heat exchanger, the outlet of the second heat exchanger is also connected to the second three-way valve, the second three-way valve is connected to the drain valve at the heat generating end, the second three-way valve is also connected to the flow sensor, the first three-way valve is also connected to the water supply valve, the expansion water tank and the exhaust valve at the heat generating end in sequence, the flow sensor is connected to the fourth hand valve through the heat generating end inlet pressure sensor and the heat generating end inlet temperature sensor in sequence, and the fourth hand valve is connected to the first heat exchanger.

[0008] Furthermore, the first manual valve and the second manual valve are respectively used to open and close the coolant in the cooling subsystem circuit, so as to discharge the coolant when the sample is disassembled; the flow sensor is used to measure the coolant flow of the cooling subsystem, and upload the flow to the controller to calculate the total heat dissipation of the cooling subsystem; the inlet temperature sensor is used to measure the coolant temperature at the inlet of the alternative fuel cell, and upload the inlet temperature to the controller to calculate the total heat dissipation of the cooling subsystem; the inlet pressure sensor is used to measure the coolant pressure at the inlet of the alternative fuel cell, and upload the inlet pressure to the controller; Proportional valve: adjust the opening of the proportional valve according to the inlet and outlet pressure difference to simulate the flow resistance of the fuel cell; outlet pressure sensor: used to measure the coolant pressure at the outlet of the alternative fuel cell, and upload the inlet pressure to the controller; The outlet temperature sensor is used to measure the coolant temperature at the outlet of the alternative fuel cell stack, and upload the outlet temperature to the controller to calculate the total heat dissipation of the cooling subsystem; the four-way valve is used to replenish coolant into the main circulation and discharge coolant inside the cooling subsystem; the drain valve is used to discharge coolant from the cooling subsystem and the flow resistance simulation module; the exhaust valve is used to discharge bubbles in the circulation pipeline of the cooling subsystem and the flow resistance simulation module; the expansion water tank is used to replenish water and exhaust air in the coolant circulation system; the water replenishment valve is used to replenish coolant in the circulation pipeline of the cooling subsystem and the flow resistance simulation module.

[0009] Furthermore, the first heat exchanger is used for heat exchange between the fuel cell cooling subsystem and the alternative stack heat generation module; the third manual valve and the fourth manual valve are used to open and close the coolant in the heat generation simulation module circuit to facilitate equipment maintenance; the heat generation end outlet temperature sensor is used to measure the coolant temperature of the heat generation simulation module after passing through the first heat exchanger, and transmit it to the controller for calculating the simulated heat generation; the heat generation end outlet pressure sensor is used to measure the coolant pressure of the heat generation simulation module after passing through the first heat exchanger; the first three-way valve is used to be arranged behind the water pump to replenish the coolant in the heat generation simulation module; the water pump is used to circulate the coolant in the heat generation simulation module and control its flow rate; the electric heater is used to heat the coolant in the heat generation simulation module by controlling the power of the electric heater and control the increase in the coolant temperature; the temperature sensor is used to measure the temperature of the coolant after being heated by the electric heater; the second heat exchanger is used to exchange heat between the coolant of the heat generation simulation module and the coolant of the chiller; the chiller The machine is used to cool down the coolant in the heat generation simulation module by controlling the coolant temperature and flow in the chiller when there is an overshoot of the heater-controlled coolant heating or simulating the cold start condition of the fuel cell stack, so as to control the temperature of the coolant to decrease; the second three-way valve is used to discharge the coolant from the heat generation simulation module; the heat generation end drain valve is used to discharge the coolant from the heat generation simulation module, which is convenient for equipment maintenance; the flow sensor is used to measure the flow of the coolant in the heat generation simulation module; the exhaust valve is used to discharge the bubbles of the coolant in the circulation pipeline of the heat generation simulation module; the heat generation end expansion water tank is used to replenish water and exhaust the coolant circulation system of the heat generation simulation module; the heat generation end water replenishment valve: replenishes the coolant in the circulation pipeline of the heat generation simulation module; the heat generation end inlet pressure sensor is used to measure the coolant pressure before the heat generation simulation module enters the first heat exchanger; the heat generation end inlet temperature sensor is used to measure the coolant temperature before the heat generation simulation module enters the first heat exchanger, and transmits it to the controller for calculating the simulated heat generation.

[0010] Furthermore, it also includes a programmable high and low voltage power supply, which is used to provide a high voltage DC power supply for the water pump in the cooling subsystem, and a low voltage DC power supply for the fan, PTC, thermostat and controller; and a controller (401), which automatically controls the key parameters of each actuator by collecting the signals of each sensor through the automatic control program built into the controller.

[0011] The advantages and beneficial effects of the present invention are as follows:

[0012] The problem of high development and testing costs of the fuel cell cooling subsystem is solved. At the same time, the stack simulation device can work without using hydrogen, and then further increases the water path flow resistance simulation on the basis of restoring the heat generated by the fuel cell as much as possible, so as to improve the accuracy of the stack simulation. The fuel cell cooling subsystem is mainly composed of a water pump, a thermostat, a filter, a PTC heater, a deionizer, a radiator, a fan, and a controller. In the matching development test process, a heat source that can simulate the heat generation of the fuel cell stack and an alternative stack of the water path flow resistance of the fuel cell stack are required, as well as a high and low voltage power supply that can power the water pump, the fan, the thermostat, the controller, etc. Therefore, the present invention mainly includes the following devices: ① Flow resistance simulation module: the coolant of the fuel cell cooling subsystem enters the alternative stack through a manual valve, and the air inside the cooling subsystem can be discharged through the exhaust valve. The coolant enters the heat exchanger after passing through the flow, temperature, and pressure sensors to exchange heat with the heat generating module, and then passes through the flow resistance regulating valve (proportional valve). Through the pressure difference of the pressure sensor at the inlet and outlet, the opening of the flow resistance regulating valve is adjusted to achieve the purpose of simulating the flow resistance; the heat dissipation of the cooling subsystem can be calculated through the temperature difference and flow of the temperature sensor at the inlet and outlet. ② Heat generation simulation module: The cooling water inlet temperature of the heat generation simulation module is controlled by the heater and the chiller, the cooling water flow rate can be controlled by the water pump, and the heat generation of the heat generation simulation module can be calculated by the inlet and outlet temperature difference measured by the temperature sensor and the flow rate measured by the flow sensor. The theoretical heat generation of the fuel cell under various working conditions is calculated, and then the inlet water temperature and flow rate of the coolant are controlled to achieve the purpose of simulating heat generation of the replacement stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall block diagram of the simulation structure of a fuel cell stack according to a preferred embodiment of the present invention;

[0014] Figure 2 It is a schematic diagram of the flow resistance simulation module;

[0015] Figure 3 It is a schematic diagram of the heat generation simulation module. DETAILED DESCRIPTION

[0016] The following will describe the technical solutions in the embodiments of the present invention in detail in conjunction with the accompanying drawings in the embodiments of the present invention. The described embodiments are only part of the embodiments of the present invention.

[0017] The technical solution of the present invention to solve the above technical problems is:

[0018] like Figure 1As shown, a fuel cell stack simulation device used in the development of a fuel cell cooling subsystem includes: a flow resistance simulation module and a heat generation simulation module, wherein the flow resistance simulation module is used for the coolant to enter the first heat exchanger 201 to exchange heat with the heat generation module, and then pass through the flow resistance regulating valve, and adjust the opening of the flow resistance regulating valve according to the pressure difference of the inlet and outlet pressure sensors to achieve the simulated flow resistance; the heat dissipation of the cooling subsystem is calculated by the temperature difference and flow rate of the inlet and outlet temperature sensors;

[0019] Heat generation simulation module: used to control the cooling water inlet temperature of the heat generation simulation module through the heater and the chiller, control the cooling water flow through the water pump, calculate the heat generation of the heat generation simulation module through the inlet and outlet temperature difference measured by the temperature sensor and the flow measured by the flow sensor; calculate the theoretical heat generation of each working condition of the fuel cell, and then control the inlet water temperature and flow of the coolant to achieve the simulated heat generation of the alternative fuel cell stack.

[0020] like Figure 2 As shown, preferably, the flow resistance simulation module includes a first hand valve 101, a flow sensor 102, an inlet temperature sensor 103, an inlet pressure sensor 104, a proportional valve 105, an outlet pressure sensor 106, an outlet temperature sensor 107, a four-way valve 108, a drain valve 109, a second hand valve 110, an exhaust valve 111, an expansion water tank 112 and a water supply valve 113, wherein one path of the first hand valve 101 is connected to the flow sensor 102, the inlet temperature sensor 103 and the inlet pressure sensor 104 in sequence, and the other path is connected to the exhaust valve 111, the expansion water tank 112 and the water supply valve 113 in sequence, the inlet pressure sensor 104 is connected to the proportional valve 105, the outlet pressure sensor 106 and the outlet temperature sensor 107 in sequence after passing through the first heat exchanger 201, and the four-way valve 108 is connected to the water supply valve 113, the drain valve 109, the second hand valve 110 and the outlet temperature sensor 107 respectively.

[0021] Preferably, the first hand valve 101 and the second hand valve 110 are respectively used to turn on and off the coolant in the cooling subsystem circuit, so as to discharge the coolant when the sample is disassembled; the flow sensor 102 is used to measure the coolant flow of the cooling subsystem, and upload the flow to the controller to calculate the total heat dissipation of the cooling subsystem; the inlet temperature sensor 103 is used to measure the coolant temperature at the inlet of the alternative battery stack, and upload the inlet temperature to the controller to calculate the total heat dissipation of the cooling subsystem; the inlet pressure sensor 104 is used to measure the coolant pressure at the inlet of the alternative battery stack, and upload the inlet pressure to the controller; the proportional valve 105: adjusts the opening of the proportional valve according to the inlet and outlet pressure difference to simulate the flow resistance of the battery stack; the outlet pressure sensor 106: is used to measure the coolant pressure at the outlet of the alternative battery stack, and uploads the inlet pressure to the controller; The outlet temperature sensor 107 is used to measure the coolant temperature at the outlet of the alternative fuel cell stack, and upload the outlet temperature to the controller to calculate the total heat dissipation of the cooling subsystem; the four-way valve 108 is used to replenish coolant into the main circulation circuit and discharge the coolant inside the cooling subsystem; the drain valve 109 is used to discharge the coolant from the cooling subsystem and the flow resistance simulation module; the exhaust valve 111 is used to discharge the bubbles in the circulation pipeline of the cooling subsystem and the flow resistance simulation module; the expansion water tank 112 is used to replenish water and exhaust air in the coolant circulation system; the water replenishment valve 113 is used to replenish the coolant in the circulation pipeline of the cooling subsystem and the flow resistance simulation module.

[0022] like Figure 3As shown, preferably, the heat generation simulation module includes a first heat exchanger 201, a third hand valve 202 and a fourth hand valve 219, a heat generation end outlet temperature sensor 203, a heat generation end outlet pressure sensor 204, a first three-way valve 205, a water pump 206, an electric heater 207, a temperature sensor 208, a second heat exchanger 209, a chiller 210, a second three-way valve 211, a heat generation end drain valve 212, a flow sensor 213, an exhaust valve 214, a heat generation end expansion water tank 215, a heat generation end water supply valve 216, a heat generation end inlet pressure sensor 217 and a heat generation end inlet temperature sensor 218, and the first heat exchanger 201 passes through the third hand valve 202, the heat generation end outlet temperature sensor 203, the heat generation end outlet pressure sensor 204, the first three-way valve 20 5 is connected to the water pump 206, the water pump 206 is connected to the electric heater 207, the temperature sensor 208 and the second heat exchanger 209 in sequence, the water chiller 210 is connected to the second heat exchanger 209, the outlet of the second heat exchanger 209 is also connected to the second three-way valve 211, the second three-way valve 211 is connected to the heat generating end drain valve 212, the second three-way valve 211 is also connected to the flow sensor 213, the first three-way valve 205 is also connected to the heat generating end water replenishment valve 216, the heat generating end expansion tank 215 exhaust valve 214 in sequence, the flow sensor 213 is connected to the fourth hand valve 219 through the heat generating end inlet pressure sensor 217, the heat generating end inlet temperature sensor 218, and the fourth hand valve 219 is connected to the first heat exchanger 201.

[0023] Preferably, the first heat exchanger 201 is used for heat exchange between the fuel cell cooling subsystem and the alternative stack heat generation module; the third manual valve 202 and the fourth manual valve 219 are used to turn on and off the coolant in the heat generation simulation module circuit to facilitate equipment maintenance; the heat generation end outlet temperature sensor 203 is used to measure the coolant temperature of the heat generation simulation module after passing through the first heat exchanger 201; transmitted to the controller for calculating the simulated heat generation; the heat generation end outlet pressure sensor 204 is used to measure the coolant pressure of the heat generation simulation module after passing through the first heat exchanger 201; the first three-way valve 205 is used to be arranged behind the water pump for replenishing coolant in the heat generation simulation module; the water pump 206 is used to circulate the coolant in the heat generation simulation module and control its flow rate; the electric heater 207 is used to heat the coolant in the heat generation simulation module by controlling the power of the electric heater to control the increase in the coolant temperature; the temperature sensor 208 is used to measure the temperature of the coolant after being heated by the electric heater; the second heat exchanger 209 is used for heat exchange between the coolant of the heat generation simulation module and the coolant of the chiller; the chiller 210 is used to cool down the coolant in the heat generation simulation module by controlling the coolant temperature and flow in the chiller 210 when there is an overshoot of the heater-controlled coolant heating or simulating the cold start condition of the fuel cell stack, so as to control the coolant temperature to decrease; the second three-way valve 211 is used to discharge the coolant from the heat generation simulation module; the heat generation end drain valve 212 is used to discharge the coolant from the heat generation simulation module, which is convenient for equipment maintenance; the flow sensor 213 is used to measure the flow of the coolant in the heat generation simulation module; the exhaust valve 214 is used to discharge the bubbles of the coolant in the circulation pipeline of the heat generation simulation module; the heat generation end expansion water tank 215 is used to replenish water and exhaust the coolant circulation system of the heat generation simulation module; the heat generation end water replenishment valve 216: replenish the coolant in the circulation pipeline of the heat generation simulation module; the heat generation end inlet pressure sensor 217 is used to measure the coolant pressure before the heat generation simulation module enters the first heat exchanger 201; the heat generation end inlet temperature sensor 218 is used to measure the coolant temperature before the heat generation simulation module enters the first heat exchanger 201; it is transmitted to the controller for calculating the simulated heat generation.

[0024] Preferably, it also includes a programmable high and low voltage power supply 301, which is used to provide a high voltage DC power supply for the water pump in the cooling subsystem, and a low voltage DC power supply for the fan, PTC, thermostat, and controller; and a controller 401, which automatically controls the key parameters of each actuator by collecting signals from various sensors through the automatic control program built into the controller.

[0025] The systems, devices, modules or units described in the above embodiments may be implemented by computer chips or entities, or by products with certain functions.

[0026] It should also be noted that the term "includes", "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, commodity or device including the element.

[0027] The above embodiments should be understood to be only used to illustrate the present invention and not to limit the protection scope of the present invention. After reading the contents of the present invention, technicians can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

Claims

1. A fuel cell stack simulation device used in the development of a fuel cell cooling subsystem, characterized in that: include: The flow resistance simulation module and the heat generation simulation module, wherein the flow resistance simulation module is used for the coolant to enter the first heat exchanger to exchange heat with the heat generation simulation module, and then pass through the flow resistance regulating valve, and adjust the opening of the flow resistance regulating valve according to the pressure difference of the inlet and outlet pressure sensors to achieve the simulated flow resistance; the heat dissipation of the cooling subsystem is calculated through the temperature difference and flow rate of the inlet and outlet temperature sensors; Heat generation simulation module: used to control the cooling water inlet temperature of the heat generation simulation module through the heater and the chiller, control the cooling water flow through the water pump, and calculate the heat generation of the heat generation simulation module through the inlet and outlet temperature difference measured by the temperature sensor and the flow measured by the flow sensor; calculate the theoretical heat generation of the fuel cell under various working conditions, and then control the inlet water temperature and flow of the coolant to achieve the simulated heat generation of the alternative fuel cell stack; The flow resistance simulation module comprises a first manual valve (101), a flow sensor (102), an inlet temperature sensor (103), an inlet pressure sensor (104), a proportional valve (105), an outlet pressure sensor (106), an outlet temperature sensor (107), a four-way valve (108), a drain valve (109), a second manual valve (110), an exhaust valve (111), an expansion water tank (112) and a water supply valve (113), wherein the first manual valve (101) is connected in sequence to the flow sensor (102), the inlet temperature sensor (103), the proportional valve (105), the outlet pressure sensor (106), the outlet temperature sensor (107), a four-way valve (108), a drain valve (109), a second manual valve (110), an exhaust valve (111), an expansion water tank (112) and a water supply valve (113). A first path is connected to a pressure sensor (103) and an inlet pressure sensor (104), and the other path is connected to an exhaust valve (111), an expansion water tank (112) and a water supply valve (113) in sequence. The inlet pressure sensor (104) is connected to a proportional valve (105), an outlet pressure sensor (106) and an outlet temperature sensor (107) in sequence after passing through a first heat exchanger (201). The four-way valve (108) is connected to the water supply valve (113), a drain valve (109), a second hand valve (110) and an outlet temperature sensor (107) respectively. The heat generation simulation module comprises a first heat exchanger (201), a third manual valve (202) and a fourth manual valve (219), a heat generation end outlet temperature sensor (203), a heat generation end outlet pressure sensor (204), a first three-way valve (205), a water pump (206), an electric heater (207), a temperature sensor (208), a second heat exchanger (209), a chiller (210), a second three-way valve (211), a heat generation end drain valve (212), a flow sensor (213), an exhaust valve (214), a heat generation end expansion water tank (215), a heat generation end water replenishment valve (216), a heat generation end inlet pressure sensor (217) and a heat generation end inlet temperature sensor (218), wherein the first heat exchanger (201) passes through the third manual valve (202), the heat generation end outlet temperature sensor (203), the heat generation end outlet pressure sensor (204), the first three-way valve (205) in sequence. ) is connected to a water pump (206), the water pump (206) is connected in sequence to an electric heater (207), a temperature sensor (208) and a second heat exchanger (209), the water chiller (210) is connected to the second heat exchanger (209), the outlet of the second heat exchanger (209) is also connected to a second three-way valve (211), the second three-way valve (211) is connected to a heat generating end drain valve (212), the second three-way valve (211) is also connected to a heat generating end drain valve (212), The first three-way valve (205) is connected to the flow sensor (213), and is also connected in sequence to the heat generating end water supply valve (216), the heat generating end expansion water tank (215), and the exhaust valve (214). The flow sensor (213) is connected in sequence to the fourth manual valve (219) via the heat generating end inlet pressure sensor (217) and the heat generating end inlet temperature sensor (218). The fourth manual valve (219) is connected to the first heat exchanger (201).

2. A fuel cell stack simulation device for developing a fuel cell cooling subsystem according to claim 1, characterized in that: The first manual valve (101) and the second manual valve (110) are respectively used to open and close the coolant in the cooling subsystem circuit, so as to facilitate the discharge of the coolant when the sample is disassembled and assembled; the flow sensor (102) is used to measure the coolant flow of the cooling subsystem, and upload the flow to the controller to calculate the total heat dissipation of the cooling subsystem; the inlet temperature sensor (103) is used to measure the coolant temperature at the inlet of the alternative fuel cell, and upload the inlet temperature to the controller to calculate the total heat dissipation of the cooling subsystem; the inlet pressure sensor (104) is used to measure the coolant pressure at the inlet of the alternative fuel cell, and upload the inlet pressure to the controller; the proportional valve (105): adjusts the opening of the proportional valve according to the inlet and outlet pressure difference to simulate the flow resistance of the fuel cell; the outlet pressure sensor (106): is used to measure the coolant pressure at the outlet of the alternative fuel cell, and uploads the inlet pressure to the controller; The outlet temperature sensor (107) is used to measure the coolant temperature at the outlet of the alternative battery stack, and upload the outlet temperature to the controller to calculate the total heat dissipation of the cooling subsystem; the four-way valve (108) is used to replenish coolant into the main circulation path and discharge coolant inside the cooling subsystem; the drain valve (109) is used to discharge coolant from the cooling subsystem and the flow resistance simulation module; the exhaust valve (111) is used to discharge bubbles in the circulation pipeline of the cooling subsystem and the flow resistance simulation module; the expansion water tank (112) is used to replenish water and exhaust air in the coolant circulation system; the water replenishment valve (113) is used to replenish coolant in the circulation pipeline of the cooling subsystem and the flow resistance simulation module.

3. The stack simulation device for developing a fuel cell cooling subsystem according to claim 1, characterized in that: The first heat exchanger (201) is used for heat exchange between the fuel cell cooling subsystem and the alternative stack heat generation module; the third manual valve (202) and the fourth manual valve (219) are used to switch on and off the coolant in the heat generation simulation module circuit to facilitate equipment maintenance; the heat generation end outlet temperature sensor (203) is used to measure the coolant temperature of the heat generation simulation module after passing through the first heat exchanger (201), and transmit it to the controller for calculating the simulated heat generation; the heat generation end outlet pressure sensor (204) is used to measure the coolant pressure of the heat generation simulation module after passing through the first heat exchanger (201); the first three-way valve (205) is used to be arranged behind the water pump to replenish the coolant in the heat generation simulation module; the water pump (206) is used to circulate the coolant in the heat generation simulation module and control its flow rate; The electric heater (207) is used to heat the coolant in the heat generation simulation module by controlling the power of the electric heater, thereby controlling the temperature of the coolant to rise; the temperature sensor (208) is used to measure the temperature of the coolant after being heated by the electric heater; the second heat exchanger (209) is used to exchange heat between the coolant in the heat generation simulation module and the coolant in the chiller; The chiller (210) is used to cool the coolant in the heat generation simulation module by controlling the temperature and flow of the coolant in the chiller (210) when there is an overshoot of the coolant heating controlled by the heater or when simulating a cold start condition of the battery stack, so as to control the coolant temperature to decrease; the second three-way valve (211) is used to discharge the coolant in the heat generation simulation module; The heat generating end drain valve (212) is used to discharge the coolant of the heat generating simulation module, so as to facilitate equipment maintenance; the flow sensor (213) is used to measure the flow of the coolant of the heat generating simulation module; The exhaust valve (214) is used to exhaust bubbles in the coolant in the circulation pipeline of the heat generation simulation module; the heat generation end expansion water tank (215) is used to replenish water and exhaust the coolant circulation system of the heat generation simulation module; the heat generation end water replenishment valve (216) replenishes the coolant in the circulation pipeline of the heat generation simulation module; the heat generation end inlet pressure sensor (217) is used to measure the coolant pressure before the heat generation simulation module enters the first heat exchanger (201); the heat generation end inlet temperature sensor (218) is used to measure the coolant temperature before the heat generation simulation module enters the first heat exchanger (201), and transmits it to the controller for calculating the simulated heat generation.

4. A fuel cell stack simulation device for use in the development of a fuel cell cooling subsystem according to any one of claims 1 to 3, characterized in that: It also includes a programmable high and low voltage power supply (301) for providing a high voltage DC power supply for a water pump in the cooling subsystem and a low voltage DC power supply for a fan, a PTC, a thermostat and a controller; and a controller (401) for automatically controlling key parameters of each actuator by collecting signals from various sensors through an automatic control program built into the controller.

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