Hydraulic characteristic simulation tool system, test method and simulation method

Abstract

The invention belongs to the technical field of flow batteries, and provides a hydraulic characteristic simulation tool system, an inspection method and a simulation method.The system comprises a first corrugated hose, a first electromagnetic control valve, a simulation unit, a second electromagnetic control valve and a second corrugated hose which are sequentially connected in the liquid flowing direction; the simulation unit comprises a built-in pipeline, a sensor array, a heating module, a data processing unit and a circulating pump; the data processing unit is installed on the surface of the built-in pipeline and electrically connected with the sensor array, the heating module and the circulating pump. According to the hydraulic characteristic simulation tool provided by the invention, a medium is driven to flow through the circulating pump, the temperature and pressure of the medium are monitored by adopting the sensor array, and data such as the temperature and the pressure are analyzed through the processing unit, so that the hydraulic characteristics of a liquid flow electric pile are simulated, and a designer is helped to optimize battery design; therefore, the actual test cost and time are reduced, and the research and development process of the flow battery is accelerated.

Description

Technical Field

[0001] The invention belongs to the technical field of liquid flow batteries, and in particular relates to a hydraulic characteristic simulation tooling system, a testing method and a simulation method. Background Art

[0002] The iron-chromium flow battery energy storage system is a new type of safe electrochemical energy storage system. It has the advantages of safety, environmental protection, high efficiency, long service life and flexible design. The iron-chromium flow battery system is mainly composed of a storage unit, a delivery unit and a power unit. The electrolyte is used as the medium, and the conversion between electrical energy and chemical energy is completed through the circulation of the electrolyte in the system. The storage unit mainly includes positive and negative electrolyte storage tanks; the delivery unit mainly includes pumps, valves and pipe fittings; the power unit mainly includes a battery stack.

[0003] During the design, production, and testing of flow battery products, the stability and safety of the electrolyte delivery unit directly affect the performance and life of the final product. Therefore, during the development and manufacturing of flow battery products, the manufactured pipeline system needs to be tested and verified. During the testing process, the pipeline needs to undergo multiple hydraulic tests that exceed the design parameters. If a flow battery stack is used in the testing under various test conditions, the cost is high, the test installation is difficult, and the operability is low. Summary of the invention

[0004] In order to solve the problems in the background technology, the present invention proposes a hydraulic characteristic simulation tooling system, a testing method and a simulation method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A hydraulic characteristics simulation tooling system, comprising:

[0007] Along the liquid flow direction, a first corrugated hose, a first electromagnetic control valve, a simulation unit, a second electromagnetic control valve and a second corrugated hose are sequentially connected;

[0008] The simulation unit includes a built-in pipeline, a sensor array, a heating module, a data processing unit and a circulation pump; the sensor array is installed on the surface of the built-in pipeline and is used to detect the fluid data in the built-in pipeline; the heating module is located on one side of the sensor array and is installed on the surface of the built-in pipeline and is used to heat the fluid in the built-in pipeline; the inlet and outlet of the circulation pump are connected to the built-in pipeline and are used to drive the fluid in the built-in pipeline to flow;

[0009] The data processing unit is installed on the surface of the built-in pipeline and is electrically connected to the sensor array, the temperature increasing module and the circulation pump, and is used to establish a curve of fluid pressure difference changing with fluid temperature and a curve of fluid pressure difference changing with fluid flow rate.

[0010] Preferably, a display screen is mounted on the surface of the simulation unit, and the display screen is electrically connected to the data processing unit.

[0011] Preferably, the sensor array comprises a first array and a second array;

[0012] The first array includes a plurality of sensors uniformly distributed along the circumference of the built-in pipeline, at least one of the sensors is a temperature sensor, at least one of the sensors is a pressure sensor; at least one of the sensors is a flow sensor;

[0013] The second array is a first array of a plurality of arrays arranged along the axial direction of the built-in pipeline.

[0014] Preferably, a liquid filling / discharging port is provided on the pipeline between the simulation unit and the second electromagnetic control valve.

[0015] A hydraulic characteristics testing method, applied to the above-mentioned hydraulic characteristics simulation tooling system, comprises the following steps:

[0016] The inlet of the battery stack is connected through a first corrugated hose, and the outlet of the battery stack is connected through a second corrugated hose;

[0017] Injecting a test fluid into the built-in pipeline to maintain the same opening of the first solenoid control valve and the second solenoid control valve;

[0018] Driving fluid flow through a circulation pump;

[0019] Adjust the temperature raising module and obtain fluid data through the sensor array;

[0020] The fluid data is analyzed by a data processor unit.

[0021] Preferably, adjusting the temperature raising module and acquiring fluid data through the sensor array comprises the following steps:

[0022] The fluid temperature is obtained through the sensor array, denoted as T n , n≥1;

[0023] and, obtaining fluid flow rate through a sensor array;

[0024] And, the fluid pressure at the inlet and outlet of the fuel cell stack is obtained through a sensor array.

[0025] Preferably, analyzing the fluid data by a data processor unit comprises the following steps:

[0026] At the fluid temperature T i , the fluid pressure difference at the inlet and outlet of the stack is calculated based on the fluid data, n≥i≥1;

[0027] At the fluid temperature T i Next, calculate the Reynolds number based on the fluid data;

[0028] Adjustment steps: adjust the flow sensor accuracy in the sensor array to ≤1L / min;

[0029] Record the fluid pressure difference and Reynolds number from 0 to each preset working condition flow rate in sequence, select the working condition with Reynolds number ≥ 4000 and the corresponding fluid pressure difference as the data to be rejected, and the simulation unit displays an alarm and rejects the data to be rejected;

[0030] Calculate the friction coefficient of the simulated tooling based on the recorded fluid pressure difference;

[0031] The friction coefficient is retrieved by using the Moody diagram to obtain the corresponding theoretical fluid pressure difference. If the difference between the theoretical fluid pressure difference and the recorded fluid pressure difference is less than ±0.02, the calibration is deemed successful. Otherwise, the calibration returns to the adjustment step.

[0032] After the verification is successful, a curve showing the fluid pressure difference changing with the fluid temperature and a curve showing the fluid pressure difference changing with the fluid flow rate are established.

[0033] A hydraulic characteristics simulation method, applied to the above-mentioned hydraulic characteristics simulation tooling system, comprises the following steps:

[0034] Along the fluid flow direction, install hydraulic characteristic simulation tooling, electrolyte storage tank and working pump in sequence;

[0035] Inputting working parameters into the simulation unit based on the curve of fluid pressure difference changing with fluid temperature and the curve of fluid pressure difference changing with fluid flow rate;

[0036] Get real-time simulation data through simulation unit;

[0037] The simulation data is analyzed by a data processing unit, and the fluid pressure difference is adjusted based on the analysis result.

[0038] Preferably, the hydraulic characteristic simulation tooling, the electrolyte storage tank and the working pump are sequentially installed along the fluid flow direction, including the following steps:

[0039] Connect the first corrugated hose to the electrolyte tank inlet;

[0040] Connect the second corrugated hose to the outlet of the working pump;

[0041] Connect the electrolyte tank outlet to the working pump inlet.

[0042] Preferably, inputting working parameters into the simulation unit based on the fluid pressure difference versus fluid temperature variation curve and the fluid pressure difference versus fluid flow rate variation curve comprises the following steps:

[0043] Set the temperature value of the heating module;

[0044] And / or, set the output power of the circulation pump.

[0045] Preferably, analyzing the simulation data by a data processing unit and adjusting the fluid pressure difference based on the analysis result comprises the following steps:

[0046] Analyzing by a data processing unit the difference between the measured fluid pressure difference and the corresponding fluid pressure difference versus fluid temperature change curve, and / or the fluid pressure difference versus fluid flow rate change curve;

[0047] If the flow difference is ≥50L / h, an alarm will be given through the analog unit;

[0048] After the alarm, coarsely adjust the solenoid valve to make the fluid pressure difference change within the 10kPa range, and then fine-tune the solenoid valve to make the fluid pressure difference change within the 1kPa range, until the measured fluid pressure difference is consistent with the fluid pressure difference change curve with the fluid temperature, and / or the fluid pressure difference is consistent with the fluid flow rate change curve.

[0049] Beneficial effects of the present invention:

[0050] The present invention provides a hydraulic characteristic simulation tool, which drives the flow of the medium through a circulating pump, and uses a sensor array to monitor the temperature and pressure of the medium, and analyzes data such as temperature and pressure through a processing unit, thereby simulating the hydraulic characteristics of the liquid flow battery stack, helping designers to optimize the battery design, thereby reducing the cost and time of actual experiments and accelerating the research and development process of liquid flow batteries.

[0051] Other features and advantages of the present invention will be described in the following description, and partly become obvious from the description, or be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0053] Figure 1 A structural schematic diagram of a hydraulic characteristic simulation tooling system of the present invention is shown;

[0054] Figure 2 A schematic diagram of the battery stack hydraulic characteristics test is shown;

[0055] Figure 3A flow chart of a hydraulic characteristic testing method of the present invention is shown;

[0056] Figure 4a A diagram of a standard flow battery system is shown;

[0057] Figure 4b The schematic diagram of the system after the simulation tooling system replaces the battery stack is shown;

[0058] Figure 5 A flow chart of a hydraulic characteristic simulation method of the present invention is shown.

[0059] In the figure: 1. first corrugated hose; 2. first solenoid control valve; 3. display screen; 4. sensor array; 5. heating module; 6. data processing unit; 7. second solenoid control valve; 8. second corrugated hose; 9. filling / discharging port; 10. circulation pump. DETAILED DESCRIPTION

[0060] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] A hydraulic characteristics simulation tool, such as Figure 1 As shown, it includes a first corrugated hose 1, a first electromagnetic control valve 2, a simulation unit, a second electromagnetic control valve 7, a second corrugated hose 8, a liquid injection / discharge port 9 and a circulation pump 10. In the liquid flow direction, the first corrugated hose 1, the first electromagnetic control valve 2, the simulation unit, the second electromagnetic control valve 7 and the second corrugated hose 8 are connected in sequence.

[0062] Furthermore, the simulation unit includes a built-in pipeline, a sensor array 4, a heating module 5, a data processing unit 6 and a circulation pump 10. The sensor array 4 is installed on the surface of the built-in pipeline to detect the fluid data in the built-in pipeline. The heating module 5 is located on one side of the sensor array 4 and is installed on the surface of the built-in pipeline to heat the fluid in the built-in pipeline. The inlet and outlet of the circulation pump 10 are connected to the built-in pipeline to drive the flow of the fluid in the built-in pipeline; the data processing unit 6 is installed on the surface of the built-in pipeline and is electrically connected to the sensor array 4, the heating module 5 and the circulation pump 10 to establish a curve of fluid pressure difference changing with fluid temperature and a curve of fluid pressure difference changing with fluid flow rate. A display screen 3 is installed on the surface of the simulation unit, and the display screen 3 is electrically connected to the data processing unit 6. An injection / discharge port 9 is also provided on the pipeline between the simulation unit and the second electromagnetic control valve 7.

[0063] It should be noted that Figure 1 In the tooling system, corrugated hoses and universal adapters are used at both ends. It can cope with different port sizes under different systems. The end can be adapted to a variety of connection methods including flanges, threads, hot-melt welding, and quick-insert fittings. In addition, the tooling can inject or drain fluids such as water and electrolytes in the tooling through the injection / discharge port 9. In addition, the electromagnetic control valve can be used to coarsely or finely adjust the opening of the pipeline. The sensor array 4 is installed at a key position in the system to detect parameters such as pressure, flow rate, and temperature. The data processing unit 6 can receive sensor data for data analysis and processing. At the same time, data parameters can be issued to simulate the hydraulic characteristics of the target battery stack. The display screen 3 can provide an intuitive operating interface for users to confirm or set experimental conditions, view real-time data, and analyze and present results.

[0064] Furthermore, in order to improve the accuracy of data collected by the sensor array 4, this embodiment proposes an installation layout, specifically: the sensor array 4 includes a first array and a second array, wherein the first array includes a plurality of sensors uniformly distributed along the circumference of the built-in pipe, at least one sensor is a temperature sensor, at least one sensor is a pressure sensor, and at least one sensor is a flow sensor. The second array is a plurality of first arrays arranged along the axial direction of the built-in pipe.

[0065] It should be noted that in some preferred schemes, taking into account the differences in temperature and pressure at various locations of the fluid, two or more temperature sensors, pressure sensors and flow sensors can be set, and a symmetrical design is adopted between the temperature sensors, which is conducive to obtaining temperature data on the upper and lower sides or left and right sides of the built-in pipeline.

[0066] like Figure 2 As shown, Figure 1 An application structure of the tooling system in the middle, which installs the hydraulic characteristic simulation tooling system on the battery stack to perform characteristic inspection before simulation. It flows the test fluid through the battery stack to obtain the hydraulic characteristics of the battery stack, establish the temperature-pressure difference change curve and the power-pressure difference change curve. The specific process is shown in Figure 3 .

[0067] like Figure 3 As shown in the figure, it is a hydraulic characteristic inspection method, which is applied to Figure 1 A hydraulic characteristics simulation tool for an iron-chromium liquid flow battery stack includes the following steps:

[0068] S1: The inlet of the battery stack is connected through the first corrugated hose 1, and the outlet of the battery stack is connected through the second corrugated hose 8.

[0069] S2: inject the fluid used for testing into the built-in pipeline to keep the first electromagnetic control valve 2 and the second electromagnetic control valve 7 at the same opening.

[0070] S3: The circulation pump 10 drives the fluid to flow.

[0071] S4: adjusting the temperature increasing module 5 and obtaining fluid data through the sensor array 4, including:

[0072] S401: Obtain the fluid temperature through the sensor array 4, denoted as T n , n≥1, and the fluid flow is obtained through the sensor array 4, and the fluid pressure at the inlet and outlet of the fuel cell stack is obtained through the sensor array 4.

[0073] S5: Analyzing the fluid data by the data processor unit 6, including the following steps:

[0074] S501: At the fluid temperature T i Under this condition, the fluid pressure difference at the inlet and outlet of the stack is calculated based on the fluid data, n≥i≥1, and the formula is as follows:

[0075] ΔP=P 出 -P 入 ;

[0076] Where ΔP is the difference between the inlet and outlet pressure sensors, i.e., the resistance drop of the stack under this condition, kPa; P 出 is the value of the pressure sensor at the fluid outlet of the simulation tooling, kPa; P 入 The value of the pressure sensor at the fluid inlet of the simulation tooling, kPa.

[0077] S502: At the fluid temperature T i The Reynolds number is calculated based on the fluid data as follows:

[0078]

[0079] Where Re is the Reynolds number; ρ is the fluid density, kg / m 3 ; V is the liquid flow rate, m / s; D is the pipe diameter, m; μ is the dynamic viscosity of the fluid, Pa·s.

[0080] S503: Adjust the accuracy of the flow sensor in the sensor array 4 to ≤1 L / min.

[0081] S504: recording the fluid pressure difference and Reynolds number at flow rates from 0 to each preset working condition in sequence, selecting working conditions with Reynolds number ≥ 4000 and the corresponding fluid pressure difference as data to be eliminated, and displaying an alarm on the display screen 3 in the simulation unit and eliminating the data to be eliminated;

[0082] S505: Calculate the friction coefficient of the simulation tooling based on the recorded fluid pressure difference, specifically using the Darcy-Weisbach equation:

[0083]

[0084] Where ΔP is the difference between the inlet and outlet pressure sensors; L is a constant, i.e., the length of the internal pipeline of the simulation tooling; and f is the friction coefficient.

[0085] S506: Using the Moody chart to retrieve the friction coefficient, obtain the corresponding theoretical fluid pressure difference. If the difference between the theoretical fluid pressure difference and the recorded fluid pressure difference is less than ±0.02, it is considered that the calibration is successful. Otherwise, return to the adjustment step.

[0086] S507: After the verification is successful, a curve of the fluid pressure difference changing with the fluid temperature and a curve of the fluid pressure difference changing with the fluid flow rate are established.

[0087] It should be noted that in S1-S5, the two ends of the hydraulic characteristic simulation fixture system are connected to the liquid inlet and outlet of the target battery stack respectively. After starting the inspection function, the built-in circulation pump 10 is started to circulate the liquid in the battery stack and the hydraulic characteristic simulation fixture system. The sensor in the system detects the flow resistance of the battery stack through the pressure difference at both ends of the system, and the detection data is analyzed by the data processing unit 6, and the instruction is sent to the simulation unit, which can self-adjust and correct the inspection result through the solenoid valve.

[0088] It should be noted that in S503, the opening and closing degree of the first electromagnetic control valve 2 is adjusted to change the flow sensor parameters within the accuracy range of 20L / min, and then the opening and closing degree of the second electromagnetic control valve 7 is adjusted to change the flow sensor within the accuracy range of 1L / min.

[0089] It should be further explained that the user may also omit steps S1 to S5 and directly input the battery stack parameters and operating conditions through the display screen 3 .

[0090] like Figure 4a The figure shows a standard flow battery system diagram, which includes a battery stack, an electrolyte storage tank, and a working pump connected in sequence. During operation, the battery stack undergoes a chemical reaction, and the electrolyte produced flows into the electrolyte storage tank. Figure 1 The tooling system can replace the battery stack to simulate its hydraulic flow characteristics.

[0091] like Figure 4b As shown in the figure, the target battery stack is replaced by a hydraulic characteristic simulation fixture system, and the two ends of the fixture system that has completed the inspection or parameter setting are connected to the inlet and outlet of the original target battery stack in the system. It can simulate the hydraulic characteristics of the battery stack, the working pump and the electrolyte storage tank when working, and then obtain real-time data to compare the fluid pressure difference with the fluid temperature change curve and the fluid pressure difference with the fluid flow rate change curve, see for details Figure 5 .

[0092] like Figure 5As shown in the figure, it is a hydraulic characteristics simulation method, which is applied to Figure 1 A hydraulic characteristics simulation tool for an iron-chromium liquid flow battery stack includes the following steps:

[0093] P1: Along the fluid flow direction, install the hydraulic characteristics simulation tooling, electrolyte storage tank and working pump in sequence.

[0094] P2: Input working parameters into the simulation unit based on the curve of fluid pressure difference changing with fluid temperature and the curve of fluid pressure difference changing with fluid flow rate;

[0095] P3: Get real-time simulation data through simulation unit;

[0096] P4: The simulation data is analyzed by the data processing unit 6, and the fluid pressure difference is adjusted based on the analysis result.

[0097] Furthermore, in P1, along the fluid flow direction, a hydraulic characteristic simulation tool, an electrolyte storage tank and a working pump are sequentially installed, including the following steps:

[0098] P101: Connect the first corrugated hose 1 to the electrolyte tank inlet;

[0099] P102: Connect the second corrugated hose 8 to the outlet of the working pump;

[0100] P103: Connect the electrolyte tank outlet to the working pump inlet.

[0101] Furthermore, in P2, inputting working parameters into the simulation unit based on the fluid pressure difference versus fluid temperature variation curve and the fluid pressure difference versus fluid flow rate variation curve includes the following steps:

[0102] P201: Set the temperature value of the temperature increasing module 5 and / or set the output power of the circulation pump 10.

[0103] Furthermore, in P4, the simulation data is analyzed by the data processing unit 6, and the fluid pressure difference is adjusted based on the analysis result, including the following steps:

[0104] P401: Analyzing the difference between the measured fluid pressure difference and the corresponding fluid pressure difference versus fluid temperature change curve, and / or the fluid pressure difference versus fluid flow rate change curve by the data processing unit 6;

[0105] P402: If the flow difference is ≥50L / h, an alarm will be given through the display screen 3 of the simulation unit;

[0106] P403: After the alarm, coarsely adjust the first solenoid control valve 2 to make the fluid pressure difference vary within the range of 10kPa, and then finely adjust the second solenoid control valve 7 to make the fluid pressure difference vary within the range of 1kPa, until the measured fluid pressure difference is consistent with the curve of fluid pressure difference changing with fluid temperature, and / or the curve of fluid pressure difference changing with fluid flow rate is consistent.

[0107] It should be noted that, in starting the hydraulic characteristic simulation function, the hydraulic characteristic simulation tooling system data processing unit 6 first needs to adjust the low-precision solenoid valve, i.e., the first solenoid control valve 2, so that the system provides hydraulic characteristics close to the real target battery stack, and then fine-tune the high-precision solenoid valve, i.e., the second solenoid control valve 7, so that it is consistent with the hydraulic characteristics of the real target battery stack. The user interface presents the monitoring data in real time for the user to analyze and optimize.

[0108] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydraulic characteristics simulation tooling system, characterized in that: include: Along the liquid flow direction, a first corrugated hose (1), a first electromagnetic control valve (2), a simulation unit, a second electromagnetic control valve (7) and a second corrugated hose (8) are sequentially connected; The simulation unit comprises a built-in pipeline, a sensor array (4), a heating module (5), a data processing unit (6) and a circulation pump (10); the sensor array (4) is mounted on the surface of the built-in pipeline and is used to detect fluid data in the built-in pipeline; the heating module (5) is located on one side of the sensor array (4) and is mounted on the surface of the built-in pipeline and is used to heat the fluid in the built-in pipeline; the inlet and outlet of the circulation pump (10) are connected to the built-in pipeline and are used to drive the fluid in the built-in pipeline to flow; The data processing unit (6) is installed on the surface of the built-in pipeline and is electrically connected to the sensor array (4), the temperature increasing module (5) and the circulation pump (10), and is used to establish a curve of fluid pressure difference changing with fluid temperature and a curve of fluid pressure difference changing with fluid flow rate.

2. A hydraulic characteristics simulation tooling system according to claim 1, characterized in that: A display screen (3) is installed on the surface of the simulation unit, and the display screen (3) is electrically connected to the data processing unit (6).

3. A hydraulic characteristics simulation tooling system according to claim 1 or 2, characterized in that: The sensor array (4) comprises a first array and a second array; The first array includes a plurality of sensors uniformly distributed along the circumference of the built-in pipeline, at least one of the sensors is a temperature sensor, at least one of the sensors is a pressure sensor; at least one of the sensors is a flow sensor; The second array is a first array of a plurality of arrays arranged along the axial direction of the built-in pipeline.

4. A hydraulic characteristics simulation tooling system according to claim 1, characterized in that: A liquid injection / discharge port (9) is provided on the pipeline between the simulation unit and the second electromagnetic control valve (7).

5. A hydraulic characteristics testing method, applied to a hydraulic characteristics simulation tooling system according to any one of claims 1 to 4, characterized in that: The following steps are involved: The inlet of the battery stack is connected via a first corrugated hose (1), and the outlet of the battery stack is connected via a second corrugated hose (8); Injecting a fluid for testing into the built-in pipeline to maintain the same opening degree of the first electromagnetic control valve (2) and the second electromagnetic control valve (7); Driving the fluid to flow by a circulation pump (10); Adjusting the temperature raising module (5) and acquiring fluid data through the sensor array (4); The fluid data is analyzed by a data processor unit (6).

6. A hydraulic characteristics testing method according to claim 5, characterized in that: The temperature raising module (5) is adjusted, and fluid data is obtained through the sensor array (4), comprising the following steps: The fluid temperature is obtained through the sensor array (4), denoted as T n , n≥1; and, obtaining the fluid flow rate through a sensor array (4); And, the fluid pressure at the inlet and outlet of the fuel cell stack is obtained through a sensor array (4).

7. A hydraulic characteristics testing method according to claim 6, characterized in that: Analyzing the fluid data by a data processor unit (6) comprises the following steps: At the fluid temperature T i , the fluid pressure difference at the inlet and outlet of the stack is calculated based on the fluid data, n≥i≥1; At the fluid temperature T i Next, calculate the Reynolds number based on the fluid data; Adjustment step: adjusting the accuracy of the flow sensor in the sensor array (4) to ≤1L / min; Record the fluid pressure difference and Reynolds number from 0 to each preset working condition flow rate in sequence, select the working condition with Reynolds number ≥ 4000 and the corresponding fluid pressure difference as the data to be rejected, and the simulation unit displays an alarm and rejects the data to be rejected; Calculate the friction coefficient of the simulated tooling based on the recorded fluid pressure difference; The friction coefficient is retrieved by using the Moody diagram to obtain the corresponding theoretical fluid pressure difference. If the difference between the theoretical fluid pressure difference and the recorded fluid pressure difference is less than ±0.02, the calibration is deemed successful. Otherwise, the calibration returns to the adjustment step. After the verification is successful, a curve showing the fluid pressure difference changing with the fluid temperature and a curve showing the fluid pressure difference changing with the fluid flow rate are established.

8. A hydraulic characteristics simulation method, applied to a hydraulic characteristics simulation tooling system according to claim 1, characterized in that: The following steps are involved: Along the fluid flow direction, install hydraulic characteristic simulation tooling, electrolyte storage tank and working pump in sequence; Inputting working parameters into the simulation unit based on the curve of fluid pressure difference changing with fluid temperature and the curve of fluid pressure difference changing with fluid flow rate; Get real-time simulation data through simulation unit; The simulation data is analyzed by a data processing unit (6), and the fluid pressure difference is adjusted based on the analysis result.

9. A hydraulic characteristics simulation method according to claim 8, characterized in that: Along the fluid flow direction, the hydraulic characteristic simulation tooling, electrolyte storage tank and working pump are installed in sequence, including the following steps: Connecting the first corrugated hose (1) to the inlet of the electrolyte storage tank; Connecting the second corrugated hose (8) to the outlet of the working pump; Connect the electrolyte tank outlet to the working pump inlet.

10. A hydraulic characteristics simulation method according to claim 8, characterized in that: Inputting working parameters into the simulation unit based on the fluid pressure difference versus fluid temperature change curve and the fluid pressure difference versus fluid flow rate change curve includes the following steps: Setting the temperature value of the heating module (5); And / or, setting the output power of the circulation pump (10).

11. A hydraulic characteristics simulation method according to claim 8, characterized in that: The simulation data is analyzed by a data processing unit (6), and the fluid pressure difference is adjusted based on the analysis result, including the following steps: Analyzing the difference between the measured fluid pressure difference and the corresponding fluid pressure difference versus fluid temperature change curve, and / or the fluid pressure difference versus fluid flow rate change curve by a data processing unit (6); If the flow difference is ≥50L / h, an alarm will be given through the analog unit; After the alarm, coarsely adjust the solenoid valve to make the fluid pressure difference change within the 10kPa range, and then fine-tune the solenoid valve to make the fluid pressure difference change within the 1kPa range, until the measured fluid pressure difference is consistent with the fluid pressure difference change curve with the fluid temperature, and / or the fluid pressure difference is consistent with the fluid flow rate change curve.

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