CN114551936A - Anti-freezing solution testing device and method for bipolar plate of fuel cell - Google Patents
Anti-freezing solution testing device and method for bipolar plate of fuel cell Download PDFInfo
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- CN114551936A CN114551936A CN202210053455.4A CN202210053455A CN114551936A CN 114551936 A CN114551936 A CN 114551936A CN 202210053455 A CN202210053455 A CN 202210053455A CN 114551936 A CN114551936 A CN 114551936A
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- antifreeze
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0432—Temperature; Ambient temperature
- H01M8/04365—Temperature; Ambient temperature of other components of a fuel cell or fuel cell stacks
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/0438—Pressure; Ambient pressure; Flow
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The invention relates to a device and a method for testing anti-freezing solution resistance of a bipolar plate of a fuel cell, wherein the device comprises an anti-freezing solution storage tank and a test galvanic pile which are communicated through a circulating pipeline; the circulating pipeline is provided with a conveying component for conveying the antifreeze and a flow detection and adjustment component for detecting and adjusting the flow of the antifreeze; the testing electric pile is provided with a bipolar plate to be tested, a heating assembly is arranged on an antifreezing solution storage tank, the antifreezing solution in the antifreezing solution storage tank is introduced into a water cavity of the bipolar plate in the testing electric pile through a circulating pipeline, an inlet pressure sensor is arranged on the inlet side of the testing electric pile, and an outlet pressure sensor and an outlet temperature sensor are arranged on the outlet side of the testing electric pile. Compared with the prior art, the invention can simulate the state that the antifreeze circularly washes the graphite bipolar plate under the working state of the galvanic pile and test the durability of the antifreeze and the bipolar plate.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a device and a method for testing anti-freezing solution resistance of a bipolar plate of a fuel cell.
Background
A pem fuel cell is a power generation device that converts chemical energy present in a fuel and an oxidant directly into electrical energy. In a typical pem fuel cell, the membrane electrode is generally placed between two conductive plates, and the two plates are both provided with a guiding groove. The diversion trenches are arranged on the surface contacted with the membrane electrode and formed by die casting, stamping or mechanical milling, and the number of the diversion trenches is more than one. The unipolar plates may be made of a metallic material or may be made of a graphite material. The diversion trench on the bipolar plate is used for respectively guiding the fuel and the oxidant into the anode region and the cathode region at two sides of the membrane electrode.
In the single cell structure of a proton exchange membrane fuel cell, only one membrane electrode and two single-sheet polar plates are provided, two unipolar plates are respectively arranged at two sides of the membrane electrode, one anode unipolar plate is used for fuel, and the other cathode unipolar plate is used for oxidant. The anti-freezing liquid guide surfaces of the two are adhered together to form a complete bipolar plate. The bipolar plate is used as a current collector plate and a mechanical support at two sides of the membrane electrode.
The diversion trench on the outer side of the bipolar plate is a channel for fuel and oxidant to enter the anode and cathode surfaces, and is a drainage channel for taking away water generated in the operation process of the cell. The antifreeze solution guide groove on the inner side of the bipolar plate is used for maintaining the temperature of the bipolar plate and the surface of the membrane electrode within a reasonable range after being introduced. In order to better verify the characteristics and durability of the graphite bipolar plate passing through the antifreeze liquid water cavity in the galvanic pile, a set of simple device is urgently needed to be designed to simulate the state that the antifreeze liquid circularly washes the graphite bipolar plate under the working state of the galvanic pile and test the durability of the antifreeze liquid and the bipolar plate.
Disclosure of Invention
The invention aims to provide a device and a method for testing anti-freezing solution resistance of a bipolar plate of a fuel cell.
The purpose of the invention can be realized by the following technical scheme: a testing device for anti-freezing solution of a fuel cell bipolar plate comprises an anti-freezing solution storage tank and a testing electric pile which are communicated through a circulating pipeline;
the circulating pipeline is provided with a conveying component for conveying the antifreeze and a flow detection and adjustment component for detecting and adjusting the flow of the antifreeze;
the testing electric pile is provided with a bipolar plate to be tested, a heating assembly is arranged on an antifreezing solution storage tank, the antifreezing solution in the antifreezing solution storage tank is introduced into a water cavity of the bipolar plate in the testing electric pile through a circulating pipeline, an inlet pressure sensor is arranged on the inlet side of the testing electric pile, and an outlet pressure sensor and an outlet temperature sensor are arranged on the outlet side of the testing electric pile. The inlet pressure sensor, the outlet pressure sensor and the outlet temperature sensor jointly form a control detection assembly.
According to the invention, the bipolar plate to be tested is arranged on the test galvanic pile, the temperature provided by the heating assembly is consistent with the actual working condition temperature of the galvanic pile, the temperature setting range is 65-90 ℃, the antifreeze in the antifreeze storage tank is introduced into a water cavity of the bipolar plate in the test galvanic pile through a circulating pipeline, an inlet pressure test assembly is arranged on the inlet side of the test galvanic pile, the flow is adjusted to change the inlet pressure of the test galvanic pile, the inlet pressure is consistent with the actual working condition pressure of the galvanic pile, the pressure setting range is 5-20 kPa, an outlet pressure test assembly and an outlet temperature test assembly are arranged on the outlet side of the test galvanic pile, the outlet pressure and temperature data are monitored, and the display parameters of the outlet pressure and temperature are not less than 5-10% of the inlet parameters.
Preferably, the flow detection regulating assembly comprises a rotor flow meter. And adjusting the flow of the flowmeter to change the inlet pressure of the test pile.
Preferably, the inlet side and the outlet side of the flow detection and adjustment assembly are respectively provided with an inlet valve and an outlet valve.
Preferably, a bypass drainage pipeline is arranged on the circulating pipeline.
Further preferably, the bypass drainage pipeline is arranged between the outlet side of the test galvanic pile and the inlet side of the antifreeze storage tank, and a drainage valve is arranged on the bypass drainage pipeline.
Still further preferably, an on-off ball valve is arranged between the bypass drain line and an inlet of the antifreeze storage tank.
Preferably, a switch valve and a filter are arranged between the outlet side of the antifreeze liquid storage tank and the circulating pipeline.
Preferably, an inlet temperature sensor is arranged on the inlet side of the test pile. Through the arrangement of the inlet temperature sensor, the temperature and pressure changes of the antifreeze liquid before and after flowing through the test galvanic pile can be further detected, and the detection precision and the controllability of the device are improved.
Preferably, an exhaust pipeline and/or a safety valve are arranged at the upper part of the anti-freezing solution storage tank. When the heating assembly works, the antifreeze in the tank evaporates to cause a larger pressure difference between the inside and the outside of the tank, and the pressure balance between the inside and the outside of the tank can be kept through the safety valve.
Preferably, the inlet pressure sensor, the outlet pressure sensor and the outlet temperature sensor are connected with a data acquisition assembly.
A method for testing the anti-freezing solution resistance of a bipolar plate of a fuel cell is carried out by using the device and comprises the following steps:
s1: heating the antifreeze in the antifreeze storage tank by using a heating assembly;
s2: starting the conveying assembly to convey the antifreeze in the circulating pipeline;
s3: detecting and adjusting the flow of the antifreeze solution in the circulating pipeline through a flow detection and adjustment component;
s4: the antifreeze flows through a test galvanic pile provided with a bipolar plate to be tested, the inlet antifreeze hydraulic pressure of the test galvanic pile is detected by an inlet pressure sensor, and the outlet antifreeze hydraulic pressure and temperature of the test galvanic pile are detected by an outlet pressure sensor and an outlet temperature sensor;
s5: the antifreeze returns to the antifreeze storage tank through a circulating pipeline.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the heated antifreeze to simulate the state of circularly scouring the graphite bipolar plate under the working state of the galvanic pile, and tests the durability of the antifreeze and the bipolar plate, so that the result is more accurate and reliable;
2. the invention can effectively evaluate the anti-freezing solution resistance of the water cavity for a long time in the verification stage of the graphite bipolar plate, verify known various severe working conditions by adjusting temperature and pressure parameters, and avoid various problems during subsequent stacking and test run;
3. according to the invention, through the matching arrangement of the circulating pipeline, the conveying assembly and the flow regulating and detecting assembly, the antifreeze can circularly flow between the antifreeze storage tank and the test galvanic pile, and controllable circular scouring of the bipolar plate on the test galvanic pile is realized;
4. according to the invention, through the matching arrangement of the inlet pressure sensor, the outlet pressure sensor and the outlet temperature sensor, the pressure value in the galvanic pile can be matched through the numerical value change of the inlet pressure sensor and the outlet pressure sensor, the use working condition of the graphite bipolar plate in the real galvanic pile working environment can be simulated, and in addition, the temperature of the heating assembly in the antifreeze storage tank can be adjusted in real time through the temperature change of the outlet temperature sensor, and the temperature sensor is also used for simulating the use working condition of the graphite bipolar plate in the real galvanic pile working environment;
5. according to the invention, by arranging the bypass drainage pipeline, the waste antifreeze can be discharged outside, and the quality of the antifreeze in the circulating pipeline is ensured.
Drawings
FIG. 1 is a schematic diagram of a testing apparatus according to the present invention;
FIG. 2 is a flow chart of a test method of the present invention;
FIG. 3 is a schematic view of the installation of the testing device of the present invention;
in the figure: 1-a circulation pipeline, 2-an antifreeze liquid storage tank, 3-a test galvanic pile, 4-a conveying assembly, 5-a flow detection and regulation assembly, 6-an inlet pressure sensor, 7-an outlet pressure sensor, 8-an outlet temperature sensor, 9-an inlet valve, 10-an outlet valve, 11-a bypass drainage pipeline, 12-a drainage valve, 13-a switching ball valve, 14-a switching valve, 15-a filter, 16-a quick-twisting tee joint and 17-a movable rack.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments. The following examples are carried out on the premise of the technical scheme of the invention, and detailed embodiments and specific operation processes are given, but the scope of the invention is not limited to the following examples.
Example 1
A testing device for anti-freezing solution resistance of a fuel cell bipolar plate is shown in figure 1 and comprises a circulating pipeline 1, an anti-freezing solution storage tank 2, a testing electric pile 3, a conveying assembly 4, a flow detection and adjustment assembly 5, an inlet pressure sensor 6, an outlet pressure sensor 7 and an outlet temperature sensor 8.
The antifreeze solution storage tank 2 is filled with antifreeze solution, a heating rod is arranged in the antifreeze solution storage tank, the antifreeze solution storage tank 2 is communicated with the test galvanic pile 3 through a circulating pipeline 1, during testing, a flexible graphite bipolar plate to be tested is fixed on the test galvanic pile 3, so that the antifreeze solution flows through the bipolar plate through the circulating pipeline 1, and then the antifreeze solution circulates back to the antifreeze solution storage tank 2. The circulation pipeline 1 is provided with a conveying assembly 4 and a flow detection and adjustment assembly 5, an inlet pressure sensor 6 is arranged on the inlet side of the test electric pile 3, and an outlet pressure sensor 7 and an outlet temperature sensor 8 are arranged on the outlet side of the test electric pile 3. In this embodiment, the conveying assembly 4 is a self-priming pump, the flow detection and adjustment assembly 5 is a rotor flow meter, and the inlet pressure sensor 6 and the outlet pressure sensor 7 are pressure gauges.
A method for testing anti-freezing solution resistance of a bipolar plate of a fuel cell uses the device of the embodiment to perform the following steps: firstly, setting the heating temperature of the antifreeze in the antifreeze storage tank 2, starting a self-priming pump to extract the antifreeze after the preparation is completed, changing the pressure value of the antifreeze by adjusting the flow of a flow meter, adding pressure gauges (an inlet pressure sensor 6 and an outlet pressure sensor 7) for detecting the inlet and outlet pressure of a small stack (a test electric stack 3) fixed on a graphite bipolar plate to be detected at two sides of the small stack, and adding a temperature sensor (an outlet temperature sensor 8) for detecting the temperature at an outlet for detecting the actual temperature of the antifreeze discharged from the small stack.
The invention leads the heated antifreeze to pass through the flowmeter and the detection device, circularly erodes the water cavity of the graphite bipolar plate for a long time, simulates the state that the antifreeze circularly erodes the graphite bipolar plate under the working state of the galvanic pile, and tests the durability of the antifreeze and the bipolar plate for a long time.
Example 2
An inlet valve 9 and an outlet valve 10 are respectively arranged on the inlet side and the outlet side of a flow detection and adjustment assembly 5, a switch valve 14 (a stop ball valve) and a filter 15 are arranged between the outlet of an antifreeze storage tank 2 and a circulating pipeline 1, and in the embodiment, the inlet valve 9 and the outlet valve 10 are quick-screw ball valves. The rest of the structure is the same as in example 1.
A test method of antifreeze solution resistance of a fuel cell bipolar plate comprises the steps of heating antifreeze solution in an antifreeze solution storage tank 2 to a working temperature of a galvanic pile, opening a switch valve 14 and a conveying assembly 4 at the moment, sucking the antifreeze solution out of the antifreeze solution storage tank 2 through the suction force of the conveying assembly 4 at the moment, enabling the antifreeze solution to enter a rotor flow meter through the switch valve 14, a filter 15 and an inlet valve 9, changing the flow rate and the pressure of the antifreeze solution through a knob of the rotor flow meter at the moment, enabling the antifreeze solution to enter a pipeline directly connected with an inlet pressure sensor 6 through an outlet valve 10, and enabling the antifreeze solution to enter the galvanic pile (test galvanic pile 3) provided with a graphite bipolar plate. The antifreeze liquid enters the water cavity of the graphite bipolar plate through the circulating pipeline, is discharged from the water cavity of the graphite bipolar plate through the circulating pipeline, and returns to the antifreeze liquid storage tank through a valve block in which an outlet pressure sensor 7 and an outlet temperature sensor 8 are installed in series.
The pressure value in the galvanic pile is matched through the numerical value change of the inlet pressure sensor 6 and the outlet pressure sensor 7, the use condition of the graphite bipolar plate under the real galvanic pile working environment is simulated, in addition, the temperature of the heating rod in the antifreeze storage tank 2 is adjusted in real time through the temperature change of the outlet temperature sensor 8 at the galvanic pile outlet end, and the device is also used for simulating the use condition of the graphite bipolar plate under the real galvanic pile working environment.
Example 3
A bypass device bypass drainage pipeline 11 is added through a quick-twisting tee joint 16 before antifreeze returns to an antifreeze storage tank 2 through a small stack (a test galvanic pile 3), a drain valve 12 is arranged on the bypass drainage pipeline 11, and a switch ball valve 13 is arranged between the bypass drainage pipeline 11 and an inlet of the antifreeze storage tank 2. The bypass drain line 11 is used to drain the contaminated antifreeze solution, and can load the drained waste antifreeze solution into the waste antifreeze solution storage tank. The rest of the structure is the same as in example 2. A flowchart of a method for testing anti-freezing solution resistance of a bipolar plate of a fuel cell in the embodiment is shown in fig. 2. In this embodiment, the drain valve 12 and the on-off ball valve 13 are also quick-screwing ball valves, and the drain valve 12 can be used for discharging the waste antifreeze.
Example 4
A testing device for anti-freezing solution of a fuel cell bipolar plate is characterized in that an anti-freezing solution storage tank 2 is of an unsealed structure and used for pressure relief of a pipeline, and meanwhile, a fan can be additionally arranged on the upper portion of the anti-freezing solution storage tank 2 to discharge evaporated harmful gas to the outside through an exhaust and filter device. The rest of the structure is the same as in example 3.
Example 5
A safety valve is arranged at the upper part of an antifreeze liquid storage tank 2, when a heating assembly works, antifreeze liquid in the tank evaporates to cause a larger pressure difference between the inside and the outside of the tank, and the safety valve keeps the pressure balance between the inside and the outside of the tank. The rest of the structure is the same as in example 3.
Example 6
A testing device for anti-freezing solution of a fuel cell bipolar plate is provided with an inlet temperature sensor at the inlet side of a testing electric pile 3, and the rest of the structure is the same as that of the embodiment 3. When the anti-freezing solution test is carried out on the bipolar plate, the heating assembly is utilized to heat the anti-freezing solution in the anti-freezing solution storage tank 2 to 65-90 ℃. The inlet pressure of the galvanic pile 3 is tested by utilizing the matching control of the flow detection adjusting assembly 5 and the inlet pressure sensor 6, so that the inlet pressure is consistent with the actual working condition pressure of the galvanic pile, the pressure setting range is 5 kPa-20 kPa, and the inlet temperature is further detected by utilizing the inlet temperature sensor. And detecting the outlet pressure and temperature data of the galvanic pile by using an outlet pressure sensor 7 and an outlet temperature sensor 8, wherein the outlet pressure and temperature parameters are not less than 5-10% of the inlet parameters.
Example 7
In a manner of mounting the testing apparatus for antifreeze solution resistance of a fuel cell bipolar plate described in embodiment 3, as shown in fig. 3, each component is integrally mounted on a movable stage 17, and an antifreeze solution storage tank 2 and a test cell stack 3 are provided on a horizontal surface of the movable stage 17.
This embodiment is through the mode that integrates, is convenient for transport and maintain, through the integration that detects and control division, when realizing that the resistant antifreeze of graphite cake erodees the experiment, the structure is more compact, and is overall arrangement more reasonable, and the control mode integrated level and the occupation space of mesa formula are less, can carry out long-time experiment to the graphite cake by the limited operation platform of make full use of, detects the simple and easy control mode of control division application, and pipeline and control ball valve are overall arrangement reasonable, the operation of the hands of being convenient for and maintenance.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The testing device for the anti-freezing solution of the fuel cell bipolar plate is characterized by comprising an anti-freezing solution storage tank (2) and a testing electric pile (3) which are communicated through a circulating pipeline (1);
the circulating pipeline (1) is provided with a conveying assembly (4) for conveying the antifreeze and a flow detection and adjustment assembly (5) for detecting and adjusting the flow of the antifreeze;
the bipolar plate to be tested is arranged on the test galvanic pile (3), a heating assembly is arranged on the antifreezing solution storage tank (2), the antifreezing solution in the antifreezing solution storage tank (2) is introduced into a water cavity of the bipolar plate in the test galvanic pile (3) through the circulating pipeline (1), an inlet pressure sensor (6) is arranged on the inlet side of the test galvanic pile (3), and an outlet pressure sensor (7) and an outlet temperature sensor (8) are arranged on the outlet side of the test galvanic pile (3).
2. The testing device for the antifreeze solution resistance of the fuel cell bipolar plate according to claim 1, wherein the flow detection adjusting assembly (5) comprises a rotameter.
3. The testing device for testing antifreeze solution resistance of fuel cell bipolar plate according to claim 1, wherein the inlet side and the outlet side of the flow detection and adjustment assembly (5) are respectively provided with an inlet valve (9) and an outlet valve (10).
4. The testing device for the anti-freezing solution resistance of the fuel cell bipolar plate according to claim 1, wherein a bypass drain line (11) is arranged on the circulating line (1).
5. The testing device for the antifreeze solution resistance of the fuel cell bipolar plate according to claim 4, wherein the bypass drain line (11) is arranged between the outlet side of the test cell stack (3) and the inlet side of the antifreeze solution storage tank (2), and the bypass drain line (11) is provided with a drain valve (12).
6. The testing device for testing anti-freezing solution resistance of the fuel cell bipolar plate according to claim 5, wherein an on-off ball valve (13) is arranged between the bypass drain pipeline (11) and an inlet of the anti-freezing solution storage tank (2).
7. The testing device for testing anti-freezing solution resistance of the fuel cell bipolar plate according to claim 1, wherein a switch valve (14) and a filter (15) are arranged between the outlet side of the anti-freezing solution storage tank (2) and the circulating pipeline (1).
8. The testing device for antifreeze solution resistance of fuel cell bipolar plate according to claim 1, wherein a vent line and/or a safety valve is provided at an upper portion of the antifreeze solution storage tank (2).
9. The testing device for the anti-freezing solution resistance of the fuel cell bipolar plate according to claim 1, wherein a data acquisition assembly is connected with the inlet pressure sensor (6), the outlet pressure sensor (7) and the outlet temperature sensor (8).
10. A test method for anti-freezing solution resistance of a fuel cell bipolar plate is characterized by being carried out by using the device as claimed in any one of claims 1 to 9, and comprising the following steps of:
s1: heating the antifreeze in the antifreeze storage tank (2) by using a heating assembly;
s2: starting the conveying assembly (4) to convey the antifreeze in the circulating pipeline (1);
s3: the flow of the antifreeze solution in the circulating pipeline (1) is detected and adjusted through the flow detection and adjustment component (5);
s4: the antifreeze flows through a test galvanic pile (3) provided with a bipolar plate to be tested, the inlet antifreeze hydraulic pressure of the test galvanic pile (3) is detected by an inlet pressure sensor (6), and the outlet antifreeze hydraulic pressure and temperature of the test galvanic pile are detected by an outlet pressure sensor (7) and an outlet temperature sensor (8);
s5: the antifreeze returns to the antifreeze storage tank (2) through the circulating pipeline (1).
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