CN214203752U - Testing device for performance of fuel cell - Google Patents
Testing device for performance of fuel cell Download PDFInfo
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- CN214203752U CN214203752U CN202023281846.7U CN202023281846U CN214203752U CN 214203752 U CN214203752 U CN 214203752U CN 202023281846 U CN202023281846 U CN 202023281846U CN 214203752 U CN214203752 U CN 214203752U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/30—Hydrogen technology
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Abstract
The utility model relates to a testing device for the performance of a fuel cell, which comprises a central processing unit, and a load module, a fuel cell module, a direct current power supply module, a parameter measuring module and a dynamometer which are in communication connection with the central processing unit; the fuel cell and the DC power supply are connected in parallel and then connected to the load controller, and the output power of the DC power supply is lambda times of the output power of the fuel cell under the control of the central processing unit. Compared with the prior art, the utility model discloses set up a DC power supply ware parallelly connected with fuel cell, adjusted load, fuel cell and DC power supply ware's power through central processing unit for fuel cell's output changes along with the load, thereby can study fuel cell's performance under the scene is applied to high-power load, and simple structure is with low costs, is favorable to research units such as colleges and universities to popularize and apply.
Description
Technical Field
The utility model belongs to the technical field of fuel cell and specifically relates to a testing arrangement of fuel cell performance is related to.
Background
The hydrogen-oxygen fuel cell has the outstanding advantages of zero emission, environmental protection and the like, and has a huge application prospect, however, under a plurality of application scenes, the power required by the load can be changed rapidly, the output power of the fuel cell is also changed rapidly along with the rapid change of the load power, particularly on an automobile, the output power of the fuel cell is required to have high response speed and long service life, and the hydrogen-oxygen fuel cell is also a bottleneck of the application of the current fuel cell technology on a passenger car and is also a difficult problem which is seriously overcome by a plurality of scientific research institutions and companies. Therefore, it is important to study the operation characteristics of the fuel cell when the output power is rapidly changed.
For low power loads, the operation data of the fuel cell can be measured when the output power changes rapidly by directly changing the required power of the load. However, for a high-power load, a high-power fuel cell stack matched with the high-power load needs to be established, which is difficult and high in cost, at present, most of domestic research units still concentrate on researching the operation characteristics of the fuel cell in a low-power load application scene, and in a high-power load application scene, the analysis and research on the operation characteristics of the fuel cell stack are not sufficient
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a testing arrangement of fuel cell performance in order to overcome the defect that above-mentioned prior art exists, set up a DC power supply ware parallelly connected with fuel cell, adjust the power of load, fuel cell and DC power supply ware through central processing unit, make fuel cell's output change along with the load, thereby can research fuel cell's performance under the scene is applied to high-power load, moreover, the steam generator is simple in structure, and is low in cost, and research units such as being favorable to colleges and universities popularize and apply.
The purpose of the utility model can be realized through the following technical scheme:
a testing device for fuel cell performance comprises a load module, a fuel cell module, a direct current power supply module, a parameter measuring module, a dynamometer and a central processing unit;
the load module comprises a load and a load controller connected with the load; the load controller is in communication connection with the central processing unit, and the central processing unit changes the required power of the load through the load controller;
the fuel cell module comprises a fuel cell and a fuel cell controller connected with the fuel cell; the fuel cell controller is in communication connection with the central processing unit, and the central processing unit changes the output power of the fuel cell through the fuel cell controller;
the direct current power supply module comprises a direct current power supply and a direct current controller connected with the direct current power supply; the direct current controller is in communication connection with the central processing unit, the central processing unit changes the output power of the direct current power supply device through the direct current controller, and under the control of the central processing unit, the output power of the direct current power supply device is lambda (lambda is not equal to 0) times of the output power of the fuel cell, and lambda is a preset proportionality coefficient;
the fuel cell and the direct current power supply are connected in parallel and then connected to the load controller;
the parameter measuring module is connected with the fuel cell and used for measuring the working parameters of the fuel cell, is in communication connection with the central processing unit and transmits the measured working parameters of the fuel cell to the central processing unit;
the dynamometer is connected with the load and used for measuring the output power of the load, and the dynamometer is also in communication connection with the central processing unit and transmits the measured output power of the load to the central processing unit;
the central processing unit is used for acquiring a control command input by a user, generating control signals of the load controller, the fuel cell controller and the direct current controller according to the control command input by the user and the output power of the load measured by the dynamometer, acquiring working parameters of the fuel cell measured by the parameter measuring module and carrying out data analysis on the working parameters.
Further, the load controller, the fuel cell controller, the direct current controller and the dynamometer are connected with the central processing unit in a wireless communication mode.
Further, the fuel cell comprises a fuel cell stack, a fuel cell reactant supply device and a DCDC booster, wherein the fuel cell stack is respectively connected with the fuel cell controller, the fuel cell reactant supply device and the DCDC booster, the fuel cell reactant supply device is connected with the fuel cell controller, and the DCDC booster is connected with the direct current power supply device in parallel and then connected to the load controller.
Further, the direct current power supply is an energy storage battery.
Furthermore, the testing device also comprises a power supply module, wherein the power supply module is respectively connected with the load controller, the fuel cell controller, the direct current controller and the dynamometer and is used for providing a working power supply for the load controller, the fuel cell controller, the direct current controller and the dynamometer.
Furthermore, the power supply module is an alternating current power supply.
Furthermore, the testing device also comprises a rack, and the load module, the fuel cell module, the direct current power supply module and the dynamometer are all arranged on the rack.
Furthermore, the testing device also comprises an input module, wherein the input module is connected with the central processing unit and is used for inputting control commands of the load controller, the fuel cell controller and the direct current controller.
Furthermore, the testing device also comprises a display module, wherein the display module is connected with the central processing unit and is used for displaying the working parameters of the fuel cell measured by the parameter measuring module.
Furthermore, the testing device also comprises a storage module, wherein the storage module is connected with the central processing unit and is used for storing the working parameters of the fuel cell measured by the parameter measuring module.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the direct current power supply device connected with the fuel cell in parallel is arranged, the power of the load, the fuel cell and the direct current power supply device is adjusted through the central processing unit, so that the output power of the fuel cell changes along with the load, the performance of the fuel cell can be researched under the high-power load application scene, the structure is simple, the cost is low, and the direct current power supply device is beneficial to popularization and application of research units such as colleges and universities.
(2) An independent power supply module is arranged to supply power to the load controller, the fuel cell controller and the like, so that the work of the load, the fuel cell and the like is not influenced, and the complexity of the system is reduced.
(3) The parameter measuring module is used for measuring the working parameters of the fuel cell, so that the influence on the running characteristic of the fuel cell when the load is in different working conditions can be analyzed.
(4) The output power of the load is measured through the dynamometer, when the output power of the load is not equal to the required power, the fuel cell and the direct-current power supply are adjusted in real time, and the control precision is higher.
(5) Under the control of the central processing unit, the output power of the direct current power supply is lambda times of the output power of the fuel cell, the control variables are few, and the control process is simpler.
Drawings
FIG. 1 is a schematic structural diagram of a testing apparatus;
FIG. 2 is a graph showing the variation of output power of a fuel cell with power demanded by a load in the embodiment;
reference numerals: 11. the device comprises a load controller, 12, a load, 21, a fuel cell controller, 22, a fuel cell, 31, a direct current controller, 32, a direct current power supply, 4, a parameter measuring module, 5, a dynamometer, 6 and a central processing unit.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
a fuel cell performance testing device is shown in figure 1 and comprises a load module, a fuel cell module, a direct current power supply module, a parameter measuring module 4, a dynamometer 5 and a central processing unit 6.
The load module comprises a load 12 and a load controller 11 connected with the load 12; the load controller 11 is in communication connection with the central processing unit 6, and the central processing unit 6 changes the required power of the load 12 through the load controller 11;
the fuel cell module includes a fuel cell 22 and a fuel cell controller 21 connected to the fuel cell 22; the fuel cell controller 21 is communicatively connected to the cpu 6, and the cpu 6 changes the output power of the fuel cell 22 through the fuel cell controller 21.
In the present embodiment, the fuel cell 22 includes a fuel cell stack, a fuel cell reactant supply device, and a DCDC booster, the fuel cell stack is connected to the fuel cell controller 21, the fuel cell reactant supply device, and the DCDC booster, respectively, the fuel cell reactant supply device is connected to the fuel cell controller 21, and the DCDC booster is connected to the load controller 11 in parallel with the dc power supply 32.
The direct current power supply module comprises a direct current power supply 32 and a direct current controller 31 connected with the direct current power supply 32; the dc controller 31 is connected to the cpu 6 in a communication manner, the cpu 6 changes the output power of the dc power supply 32 through the dc controller 31, and the output power of the dc power supply 32 is λ (λ ≠ 0) times the output power of the fuel cell 22 under the control of the cpu 6, where λ is a preset proportionality coefficient.
Considering the cost problem and the difficulty of building, the power of the fuel cell 22 for laboratory research is small, when the power of the load 12 is small, the fuel cell 22 can be matched with the load 12, the required power of the load 12 is directly changed, the output power of the fuel cell 22 is changed, and the performance change of the fuel cell 22 can be researched. When the power of the load 12 is large, the fuel cell 22 cannot match the load 12, and the dc power supply 32 and the fuel cell 22 are used as the input of the load 12.
The fuel cell 22 and the direct current power supply 32 are connected in parallel and then connected to the load controller 11; the sum of the output power of the dc power supply 32 and the output power of the fuel cell 22 is the input power of the load 12, and the input power of the load 12 is (1+ λ) times the output power of the fuel cell 22, so that the output power of the fuel cell 22 varies in equal proportion to the required power of the load 12. Thus, the change in the performance of the fuel cell 22 under the high power load 12 can be directly studied without building the high power fuel cell 22. In this embodiment, the dc power supply 32 is an energy storage battery, and can provide power of different magnitudes, and in other embodiments, the dc power supply 32 may also be other dc power supply devices.
The parameter measuring module 4 is connected with the fuel cell 22 and used for measuring the working parameters of the fuel cell 22, and the parameter measuring module 4 is also in communication connection with the central processing unit 6 and transmits the measured working parameters of the fuel cell 22 to the central processing unit 6; the cpu 6 analyzes the operating parameters of the fuel cell 22 to study the change in the performance of the fuel cell 22, and the like.
The dynamometer 5 is connected with the load 12 and used for measuring the output power of the load 12, the dynamometer 5 is also in communication connection with the central processing unit 6 and transmits the measured output power of the load 12 to the central processing unit 6; theoretically, the output power of the load 12 is equal to the demanded power of the load 12, but in the actual regulation process, fluctuation may occur, and therefore, after the demanded power of the load 12 is set, the output power of the load 12 is also measured by the dynamometer 5, and if the output power is not equal to the demanded power, the cpu 6 regulates the fuel cell controller 21 and the dc controller 31 so that the output power of the load 12 is equal to the demanded power.
The central processing unit 6 is used for acquiring a control command input by a user, generating control signals of the load controller 11, the fuel cell controller 21 and the direct current controller 31 according to the control command input by the user and the output power of the load 12 measured by the dynamometer 5, acquiring an operating parameter of the fuel cell 22 measured by the parameter measuring module 4 and carrying out data analysis on the operating parameter. The control command input by the user includes the required power of the load 12, and for example, the user inputs the control command to operate the load 12 according to the required power curve under a certain condition, and the required power of the load 12 changes with time.
In this embodiment, the load controller 11, the fuel cell controller 21, the dc controller 31, and the dynamometer 5 are connected to the central processing unit 6 in a wireless communication manner, so that the number of connections is reduced, the connection manner is more flexible, and the positions of the load controller 11, the fuel cell controller 21, the dc controller 31, and the dynamometer 5 to the central processing unit 6 can be arbitrarily adjusted. In other embodiments, communication may be performed by a data line connection method, and the reliability of communication may be ensured by wired communication.
The testing device further comprises a power supply module, wherein the power supply module is respectively connected with the load controller 11, the fuel cell controller 21, the direct current controller 31 and the dynamometer 5 and is used for providing working power for the load controller 11, the fuel cell controller 21, the direct current controller 31 and the dynamometer 5. In this embodiment, the power supply module is an ac power supply.
The load controller 11, the fuel cell controller 21, the direct current controller 31 and the dynamometer 5 are independently powered through the power supply module, the load 12, the fuel cell 22 and the direct current power supply 32 are not affected, the complexity of the system is reduced, and the control variables are fewer.
The testing device further comprises a rack, and the load module, the fuel cell module, the direct current power supply module and the dynamometer 5 are all arranged on the rack.
The testing device further comprises an input module, which is connected with the central processing unit 6 and is used for inputting control commands of the load controller 11, the fuel cell controller 21 and the direct current controller 31.
The testing device further comprises a display module, which is connected with the central processing unit 6 and is used for displaying the working parameters of the fuel cell 22 measured by the parameter measuring module 4.
The testing device further comprises a storage module, which is connected with the central processing unit 6 and is used for storing the working parameters of the fuel cell 22 measured by the parameter measuring module 4, and then the working parameters stored in the storage module can be checked and analyzed. In this embodiment, the storage module is a memory such as a usb disk or a hard disk, and in other embodiments, a cloud storage platform may also be used.
In this embodiment, the central processing unit 6 is a computer, the input module is a keyboard, and the display module is a display screen, and a user sets the required power of the load 12 through the computer, and then adjusts the output powers of the fuel cell 22 and the dc power supply 32, and the sum of the output powers of the fuel cell 22 and the dc power supply 32 is the input power of the load 12. When the required power of the load 12 changes, the output power of the fuel cell 22 changes, the parameter measuring module 4 continuously measures the operating parameters of the fuel cell 22, such as current, voltage, internal structure parameters, and the like, and displays the data and the analysis result of the data on the display screen.
In testing the performance of the fuel cell 22, the following steps are included:
s1: the maximum required power of the load 12 is obtained, the fuel cell 22 and the direct current power supply 32 matched with the load 12 are selected, and the proportionality coefficient lambda is determined, so that the maximum output power of the fuel cell 22 and the maximum required power of the load 12 satisfy the following formula:
(1+λ)P2_max_output＞P1_max_need
wherein, P1_max_needIs the maximum power demand, P, of the load 122_max_outputThe maximum output power of the fuel cell 22;
s2: connecting and debugging a load module, a fuel cell module, a direct current power supply module, a parameter measurement module, a dynamometer and a central processing unit 6, wherein the central processing unit 6 regulates the required power of a load 12 according to a control command of a user;
s3: the CPU 6 obtains the required power P of the load 121_needIf P is1_need＞(1+λ)P2_max_outputIf not, executing step S5, otherwise, executing step S4;
s4: the cpu 6 adjusts the output power of the fuel cell 22 and the output power of the dc power supply 32, and then performs step S6, so that the output power of the fuel cell 22 and the output power of the dc power supply 32 satisfy the following relation:
P1_need＝P1_output＝η×P1_input
P1_input＝P2_output+P3_output＝P2_output+λP2_output＝(1+λ)×P2_output
wherein, P1_needIs the required power of the load 12, P1_outputThe output power of the load 12 measured by the dynamometer 5, η is the conversion efficiency, P1_inputIs the input power of the load 12, P2_outputIs the output power, P, of the fuel cell 223_outputThe output power of the dc power supply 32;
s5: the cpu 6 adjusts the required power of the load 12, the output power of the fuel cell 22, and the output power of the dc power supply 32, and then performs step S6 so that the output power of the fuel cell 22 is the maximum output power P2_max_outputSo that the output power of the fuel cell 22 and the output power of the dc power supply 32 satisfy the following relationship:
P1_need＝P1_output＝η×P1_input
P1_input＝P2_max_output+P3_output
wherein, P1_needIs the required power of the load 12, P1_outputThe output power of the load 12 measured by the dynamometer 5, η is the conversion efficiency, P1_inputIs the input power of the load 12, P2_outputIs the output power, P, of the fuel cell 223_outputThe output power of the dc power supply 32;
s6: the central processing unit 6 obtains the working parameters of the fuel cell 22 measured by the parameter measuring module 4 and performs data analysis on the working parameters;
s7: the cpu 6 adjusts the required power of the load 12 in accordance with the control command of the user, and repeats step S3 until the test of the performance of the fuel cell 22 is stopped.
In this embodiment, the load 12 is a vehicle motor, the load controller 11 adjusts the required power by controlling the torque and the rotation speed of the vehicle motor, and the maximum required power P of the load 121_max_needAt 29kw, the maximum output power P of the fuel cell 222_max_output10kw, the cpu 6 controls the output power of the dc power supply 32 to be λ times the output power of the fuel cell 22 during the test, so that the following formula is obtained:
P1_input＝P2_output+P3_output＝P2_output+λP2_output＝(1+λ)×P2_output
in this embodiment, λ is set to 2, the input power of the load 12 is 3 times the output power of the fuel cell 22, and the output power of the fuel cell 22 varies in equal proportion to the input power of the load 12.
The direct current power supply 32 with the output power being lambda times of the output power of the fuel cell 22 is connected to the fuel cell 22 in parallel, so that the output power of the fuel cell 22 changes proportionally with the input power of the load 12, and the performance test of the fuel cell 22 can be performed by changing the required power of the high-power load 12 in the application scene of the high-power load 12.
As shown in fig. 2, when the required power of the load 12 changes, the output power of the fuel cell 22 also changes, and the trend of the change is substantially uniform.
In order to ensure the safety of the fuel cell 22, an overload protection is set, that is, in step S5, the cpu 6 controls the output power of the fuel cell 22 to be always less than a preset safety value, and an overload condition does not occur. When the power demand of the load 12 suddenly changes, if the output power of the fuel cell 22 is increased to the preset safe value, P still cannot be satisfied1_input＝(1+λ)×P2_outputThe output power of the fuel cell 22 is not increased further but the output power of the dc power supply 32 is increased, so that the safety of the fuel cell 22 is ensured although the fuel cell 22 cannot follow the change of the load 12 in an equal proportion.
After the load 12 operates for a period of time under a certain working condition, for example, 1000 hours, the parameter measurement module 4 may obtain an output voltage curve, an output current curve, an output power curve, and the like of the fuel cell 22, and may analyze the performance degradation condition of the fuel cell 22, thereby further researching the durability of the fuel cell 22.
The performance change of the fuel cell 22 with different optimization schemes can be tested by the testing device provided by the application, so that whether the optimization scheme of the fuel cell 22 is reasonable or not can be researched.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The device for testing the performance of the fuel cell is characterized by comprising a load module, a fuel cell module, a direct current power supply module, a parameter measuring module (4), a dynamometer (5) and a central processing unit (6);
the load module comprises a load (12) and a load controller (11) connected with the load (12); the load controller (11) is in communication connection with the central processing unit (6), and the central processing unit (6) changes the required power of the load (12) through the load controller (11);
the fuel cell module comprises a fuel cell (22) and a fuel cell controller (21) connected with the fuel cell (22); the fuel cell controller (21) is in communication connection with the central processing unit (6), and the central processing unit (6) changes the output power of the fuel cell (22) through the fuel cell controller (21);
the direct current power supply module comprises a direct current power supply device (32) and a direct current controller (31) connected with the direct current power supply device (32); the direct current controller (31) is in communication connection with the central processing unit (6), and the central processing unit (6) changes the output power of the direct current power supply (32) through the direct current controller (31);
the fuel cell (22) and the direct current power supply (32) are connected in parallel and then connected to the load controller (11);
the parameter measuring module (4) is connected with the fuel cell (22) and is used for measuring the working parameters of the fuel cell (22), and the parameter measuring module (4) is also in communication connection with the central processing unit (6) and transmits the measured working parameters of the fuel cell (22) to the central processing unit (6);
the dynamometer (5) is connected with the load (12) and used for measuring the output power of the load (12), and the dynamometer (5) is also in communication connection with the central processing unit (6) and transmits the measured output power of the load (12) to the central processing unit (6);
the central processing unit (6) is used for acquiring a control command input by a user, generating control signals of the load controller (11), the fuel cell controller (21) and the direct current controller (31) according to the control command input by the user and the output power of the load (12) measured by the dynamometer (5), acquiring working parameters of the fuel cell (22) measured by the parameter measuring module (4) and analyzing the working parameters.
2. The fuel cell performance testing device according to claim 1, wherein the load controller (11), the fuel cell controller (21), the direct current controller (31) and the dynamometer (5) are connected with the central processing unit (6) in a wireless communication mode.
3. The device for testing the performance of the fuel cell according to claim 1, wherein the fuel cell (22) comprises a fuel cell stack, a fuel cell reactant supply device and a DCDC booster, the fuel cell stack is respectively connected with a fuel cell controller (21), the fuel cell reactant supply device and the DCDC booster, the fuel cell reactant supply device is connected with the fuel cell controller (21), and the DCDC booster is connected with a direct current power supply (32) in parallel and then connected to the load controller (11).
4. A fuel cell performance testing device according to claim 1, characterized in that the dc power supply (32) is an energy storage battery.
5. The device for testing the performance of the fuel cell is characterized by further comprising a power supply module, wherein the power supply module is respectively connected with the load controller (11), the fuel cell controller (21), the direct current controller (31) and the dynamometer (5) and is used for supplying working power to the load controller (11), the fuel cell controller (21), the direct current controller (31) and the dynamometer (5).
6. The device for testing the performance of the fuel cell according to claim 5, wherein the power supply module is an alternating current power supply.
7. The fuel cell performance testing device of claim 1, further comprising a frame, wherein the load module, the fuel cell module, the dc power supply module and the dynamometer (5) are disposed on the frame.
8. The fuel cell performance testing device according to claim 1, further comprising an input module, connected to the central processing unit (6), for inputting control commands of the load controller (11), the fuel cell controller (21) and the dc controller (31).
9. The fuel cell performance testing device according to claim 1, further comprising a display module, connected to the central processing unit (6), for displaying the operating parameters of the fuel cell (22) measured by the parameter measuring module (4).
10. The fuel cell performance testing device according to claim 1, further comprising a storage module, connected to the central processing unit (6), for storing the operating parameters of the fuel cell (22) measured by the parameter measuring module (4).
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