CN116930776B - Variable flow field multifunctional PCB test board for air-cooled fuel cell cathode - Google Patents
Variable flow field multifunctional PCB test board for air-cooled fuel cell cathode Download PDFInfo
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- CN116930776B CN116930776B CN202310763625.2A CN202310763625A CN116930776B CN 116930776 B CN116930776 B CN 116930776B CN 202310763625 A CN202310763625 A CN 202310763625A CN 116930776 B CN116930776 B CN 116930776B
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 239000000446 fuel Substances 0.000 title claims abstract description 42
- 239000002184 metal Substances 0.000 claims abstract description 55
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052802 copper Inorganic materials 0.000 claims abstract description 16
- 239000010949 copper Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims description 2
- 210000004027 cell Anatomy 0.000 claims 13
- 210000000170 cell membrane Anatomy 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/378—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] specially adapted for the type of battery or accumulator
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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
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- Fuel Cell (AREA)
Abstract
The invention relates to a variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode, which comprises a PCB substrate; the multi-resistance resistor block comprises at least two groups of resistors connected in parallel; the multi-section type current collecting metal sheets are arranged on the PCB substrate in parallel, and each section of the multi-section type current collecting metal sheet is internally provided with a current guiding copper column; the variable cathode flow field block is detachably arranged on the PCB substrate, and at least one temperature and humidity measurement module is arranged on the variable cathode flow field block. The variable cathode flow field block is detachably arranged on the PCB substrate, so that the PCB test board can be suitable for various flow field structures, the PCB test board can select proper measuring ranges according to working conditions by arranging the multi-resistance resistor block, the current density distribution of the membrane electrode can be accurately measured, and the temperature and humidity measurement module is arranged, so that the PCB test board can simultaneously measure the temperature distribution and the humidity distribution.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode.
Background
With the rapid development of new energy automobiles, fuel cells are also being continuously optimized as an important power source thereof. The proton exchange membrane fuel cell has the advantages of high efficiency, quick start, no pollution and the like, and has larger reaction area to meet the power requirement, and meanwhile, the phenomenon of uneven distribution of multiple physical fields such as current density, temperature, humidity and the like exists in the fuel cell due to complex heat transfer, mass transfer and electrochemical reaction in the fuel cell, so that the uneven reaction in the fuel cell is caused, and the improvement of the performance of the fuel cell is limited.
In the research and development of the air-cooled fuel cell, the test for the cathode flow field of the air-cooled fuel cell is single, and only the conventional current density distribution can be measured, but the temperature distribution and the humidity distribution cannot be measured at the same time; meanwhile, when the MEA current density is measured, the existing testing method has large interference on the internal flow field of the fuel cell, and a proper measuring range cannot be selected according to working conditions, so that the application range of the testing plate is small, and the practicability is low.
In addition, the existing test plate for the cathode flow field of the air-cooled fuel cell has only a single flow field structure, the flow field structure of the proton exchange membrane fuel cell is changeable, the test plate with the single flow field structure cannot adapt to different flow field structures, and different flow field structures cannot be selected in a targeted manner according to different use environments.
Therefore, development of a variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode is needed.
Disclosure of Invention
In view of the above, the invention provides a multifunctional variable flow field PCB test board for an air-cooled fuel cell cathode, and aims to provide a multifunctional PCB test board which can be used for a variable flow field structure and can simultaneously measure current density distribution, temperature distribution and humidity distribution on the premise of affecting the internal flow field of fuel to the minimum extent, and meanwhile, the PCB test board can select a proper measuring range according to working conditions, so that the current density distribution of a membrane electrode MEA is accurately measured.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode comprises,
a PCB substrate;
the multi-resistance resistor block is welded on the PCB substrate and comprises at least two groups of parallel resistors, each group of parallel resistors comprises a plurality of parallel resistor elements, the resistance values of the resistor elements in the same group are the same, and the resistance values of the parallel resistors in each group are different;
the multi-section type current collecting metal sheets comprise a plurality of multi-section type current collecting metal sheets, the multi-section type current collecting metal sheets are arranged on the PCB substrate in parallel, the multi-section type current collecting metal sheets are distributed at equal intervals, a flow channel is formed at intervals between the multi-section type current collecting metal sheets, a current guiding copper column is arranged in each section of the multi-section type current collecting metal sheets, and the current guiding copper column penetrates through the PCB substrate through the multi-section type current collecting metal sheets;
the variable cathode flow field block is detachably arranged on the PCB substrate, is arranged in the flow channel and is provided with at least one temperature and humidity measurement module.
Further, the multi-section current collecting metal sheets are connected with the battery membrane electrode, the multi-resistance resistor blocks are arranged in an outward-guiding mode, the multi-resistance resistor blocks are arranged outside the flow field, each group of resistor elements in the parallel resistors are in one-to-one correspondence with each section of the multi-section current collecting metal sheets, one end of each group of resistor elements in the parallel resistors and one section of the multi-section current collecting metal sheets corresponding to each group of resistor elements in the parallel resistors are communicated through gold-plated lines in the PCB substrate, and the other end of each group of resistor elements in the parallel resistors is connected with a battery anode binding post.
Furthermore, a wedge-shaped socket is arranged on the PCB substrate, and the variable cathode flow field block is inserted into the wedge-shaped socket and is arranged on the PCB substrate.
Further, the temperature and humidity measurement module consists of two thermocouples and a heating piece which are sequentially arranged along the airflow direction, and the temperature and humidity measurement module is used for quantitatively measuring the temperature distribution of the cathode of the air-cooled fuel cell and qualitatively measuring the humidity distribution of the cathode of the air-cooled fuel cell.
Further, the temperature distribution is obtained by reading the data of the first thermocouple facing the wind, and the qualitative data of the humidity distribution is obtained by calculating the temperature difference of the two thermocouples.
Further, the multi-section type current collecting metal sheets are in direct contact with the membrane electrode of the battery, and the multi-section type current collecting metal sheets are used for collecting the local current of the membrane electrode.
Further, the inside of the variable cathode flow field block is provided with a wiring groove, the temperature and humidity measurement module is embedded in the wiring groove, the PCB substrate is also provided with the wiring groove, and the wiring groove in the inside of the variable cathode flow field block is communicated with the wiring groove on the PCB substrate.
Further, the temperature and humidity measuring modules are uniformly distributed on the variable cathode flow field block along the length direction of the variable cathode flow field block.
Further, the drainage copper column is arranged in the middle of each section of the multi-section type current collecting metal sheet and used for guiding the current collected by the multi-section type current collecting metal sheet to the back surface of the PCB substrate.
Furthermore, the drainage copper column is of a hollow structure, and when the temperature and humidity testing module is not used, the hollow structure is used as a jack to be inserted into a common testing block or a sensor.
Compared with the prior art, the invention has the beneficial effects that:
(1) Through set up many resistance blocks on the base plate of PCB test board, can select to use different resistance under different load demands and precision demands in order to satisfy the service condition, can be according to the different operating mode selectivity access corresponding resistance, the break-make through the resistance of different resistance and circuit connection selects suitable resistance, makes circuit board test range bigger, and adaptability is better.
(2) The multi-resistance resistor blocks are arranged outside the flow field without burying resistors inside the flow field, so that the processing difficulty is effectively reduced, the processing cost is reduced, and the influence on the flow field inside the fuel cell is small.
(3) By arranging the variable cathode flow field block and detachably mounting the variable cathode flow field block on the substrate of the PCB test board, different flow field structures can be selected according to different use environments in a targeted manner, so that the quick replacement of the cathode flow field on the PCB test board is realized, and the PCB test board is applied to various different flow field types.
(4) The temperature and humidity measurement module is used for quantitatively measuring the temperature distribution of the cathode of the air-cooled fuel cell and qualitatively measuring the humidity distribution of the cathode of the air-cooled fuel cell, and is simple in structure, small in size, low in cost and small in interference to air flow distribution in a flow channel, so that interference to the flow structure of a sensor wire harness is avoided, and meanwhile, the installation difficulty is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a perspective exploded view of a PCB test board according to an embodiment of the present invention;
FIG. 2 shows a schematic front view of a PCB test board according to an embodiment of the present invention;
FIG. 3 shows a schematic back view of a PCB test board according to an embodiment of the invention;
FIG. 4 shows a schematic diagram of an embodiment of the invention where a PCB test plate is not mounted with a variable cathode flow field block;
fig. 5 shows an enlarged perspective view of a variable cathode flow field block a in an embodiment of the invention;
fig. 6 shows an enlarged perspective view of a variable cathode flow field block B in an embodiment of the invention;
FIG. 7 is a schematic diagram of a circuit of a multi-resistance resistor block according to an embodiment of the present invention when the multi-resistance resistor block has two parallel resistors with different total resistances.
In the figure: 1. a PCB substrate; 2. a multi-resistance block; 2-1, a small-resistance parallel resistor; 2-2, a large-resistance parallel resistor; 3. a multi-stage current collecting metal sheet; 4. drainage copper columns; 5. a variable cathode flow field block; 5-1, a variable cathode flow field block a;5-2, a variable cathode flow field block B; 6. a temperature and humidity measurement module; 7-1, switch A;7-2, switch B.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode, which is shown in figures 1-7 and comprises:
a PCB substrate 1;
the multi-resistance resistor block 2 is welded on the PCB substrate, the multi-resistance resistor block 2 comprises at least two groups of parallel resistors, each group of parallel resistors comprises a plurality of parallel resistor elements, the resistance values of the resistor elements in the same group are the same, and the resistance values of the parallel resistors in each group are different;
the multi-section type current collecting metal sheets 3, wherein the multi-section type current collecting metal sheets 3 comprise multi-section type current collecting metal sheets, the multi-section type current collecting metal sheets 3 are arranged on the PCB substrate 1 in parallel, the multi-section type current collecting metal sheets 3 are distributed at equal intervals, the intervals among the multi-section type current collecting metal sheets 3 form a flow passage, each section of the multi-section type current collecting metal sheets 3 is internally provided with a current guiding copper column 4, and the current guiding copper column 4 passes through the multi-section type current collecting metal sheets 3 and penetrates through the PCB substrate 1;
the variable cathode flow field block 5 is detachably arranged on the PCB substrate 1, the variable cathode flow field block 5 is arranged in a flow channel, and at least one temperature and humidity measurement module 6 is arranged on the variable cathode flow field block 5.
The multi-section type current collecting metal sheets 3 are in direct contact with the membrane electrode MEA of the cell, and the current density of each part of the membrane electrode MEA can be accurately reflected by local current collecting of the membrane electrode MEA through the plurality of multi-section type current collecting metal sheets 3, and the number of the multi-section type current collecting metal sheets 3 can be specifically selected according to the measuring area of the membrane electrode MEA.
Preferably, the multi-section current collecting metal sheet 3 is a multi-section current collecting copper sheet.
The drainage copper column 4 is arranged in the middle of each section of the multi-section type current collecting metal sheet 3 and used for guiding the current collected by the multi-section type current collecting metal sheet 3 to the back surface of the PCB substrate 1.
The multi-section current collecting metal sheet 3 is connected with a battery membrane electrode, the multi-resistance resistor blocks 2 are arranged in an outward-guiding mode, the multi-resistance resistor blocks 2 are arranged outside a flow field, each group of resistor elements in the parallel resistors are in one-to-one correspondence with each section of the multi-section current collecting metal sheet 3, one end of each group of resistor elements in the parallel resistors and one section of the multi-section current collecting metal sheet 3 corresponding to each group of resistor elements in the parallel resistors are communicated through a gold-plated circuit in the PCB substrate 1, and the other end of each group of resistor elements in the parallel resistors is connected with a battery anode binding post.
Compared with the prior art that the resistor is buried in the flow field to measure the current density distribution, the multi-resistance resistor block 2 is arranged in an outward-guiding mode, the current at each position of the membrane electrode MEA is collected by the multi-section type current collecting metal sheet 3, then flows to the back face of the PCB substrate 1 through the current guiding copper column 4 on the multi-section type current collecting metal sheet 3, flows to the multi-resistance resistor block 2 through the gold plating line embedded in the PCB substrate, the other end of the multi-resistance resistor block 2 is directly connected with the battery anode binding post, a circuit is conducted, the resistor voltage is measured, and the current quantity generated by the membrane electrode MEA in the area is calculated, so that the current density distribution at the cathode side of the membrane electrode of the air-cooled fuel cell can be measured. The multi-resistance resistor block 2 is arranged in an outward-guiding mode, machining difficulty is effectively reduced, machining cost is reduced, and influence on an internal flow field of the fuel cell is small.
The multi-resistance resistor block 2 is provided with at least two groups of parallel resistors with different resistance values, the resistors with different resistance values are designed to be connected into a circuit in parallel respectively, and the resistors with different resistance values can be selected under different load demands and precision demands to meet the use conditions, so that the corresponding resistors can be selectively connected according to different working conditions. As shown in fig. 3 and fig. 7, the multi-resistance resistor block 2 has two groups of parallel resistors with different resistance values, the small-resistance parallel resistor 2-1 and the large-resistance parallel resistor 2-2, the small-resistance parallel resistor 2-1 comprises a plurality of parallel resistor elements, the resistance value of each resistor element is the same, the number of the resistor elements in each group is equal to the total number of the multiple sections of the current collecting metal sheets 3, namely, each resistor element in the small-resistance parallel resistor 2-1 corresponds to one section of the current collecting metal sheet, when the switch A7-1 is closed and the switch B7-2 is opened, the local current collected by the multiple sections of the current collecting metal sheets 3 flows to the anode binding post after passing through each resistor element in the small-resistance parallel resistor 2-1; when the switch B7-2 is closed and the switch A7-1 is opened, the local current collected by the multi-section current collecting metal sheet 3 respectively passes through each resistance element in the large-resistance parallel resistor 2-2 and then flows to the anode binding post. The large-resistance resistor has a large measuring range, has a large influence on the internal resistance of the battery, and is suitable for use under the low-current condition; the small-resistance resistor has smaller measuring range, but has smaller influence on the internal resistance of the battery, and is more suitable for the high-current condition. The resistance of the resistor is selected to be suitable through the connection and disconnection of the resistors with different resistance values and the circuit, so that the testing range of the circuit board is larger, and the adaptability is better.
The number of parallel resistors in the multi-resistance resistor block 2 can be adaptively selected according to the specific application environment and the purpose of use.
The variable cathode flow field block 5 and the PCB substrate 1 are designed in a separated mode, the variable cathode flow field block 5 is detachably arranged on the PCB substrate 1, and particularly, a wedge-shaped socket is arranged on the PCB substrate 1, and the variable cathode flow field block 5 is inserted into the wedge-shaped socket, so that the variable cathode flow field block can be conveniently and rapidly extracted, inserted and replaced. When the device is used, the wedge-shaped socket design can enable the variable cathode flow field block 5 to be naturally locked with the PCB substrate 1 under the action of wind power, so that experimental errors caused by flow field movement in the testing process are prevented.
As shown in fig. 5-6, the variable cathode flow field block 5 may be a variable cathode flow field block A5-1, a variable cathode flow field block B5-2. The proton exchange membrane fuel cell flow field structure is changeable, different flow field structures can be selected according to different use environments, and the variable cathode flow field block 5 with different flow field structures is inserted onto the PCB substrate 1, so that the quick replacement of the cathode flow field on the PCB substrate 1 is realized, and the PCB test board is applied to various different flow field types. The structure of the variable cathode flow field block 5 is therefore not limited to the two types described above.
The temperature and humidity measurement module 6 consists of two thermocouples and a heating piece which are sequentially arranged along the airflow direction, and the temperature and humidity measurement module 6 is used for quantitatively measuring the temperature distribution of the cathode of the air-cooled fuel cell and qualitatively measuring the humidity distribution of the cathode of the air-cooled fuel cell.
The temperature distribution is measured by one of the two thermocouples in the temperature and humidity measuring module 6, and is determined according to the air flow direction, and the temperature distribution is obtained by reading the data of the first thermocouple facing the wind.
Qualitative data of humidity distribution are calculated by temperature difference of two thermocouples, and the principle is as follows:
because the temperature and humidity measurement modules are uniformly distributed and the thermocouple arrangement intervals are very close, the temperature change of air passing through the heating sheet is only related to the specific heat capacity of the air, and the air flow is supplied by the fan, and the Mach number is lower than 0.3, so that the temperature and humidity measurement module can be regarded as incompressible flow.
According to the specific heat capacity formula:
Q＝cmΔT
the heating value in unit time can be obtained on the basis: q/t=c (m/T) Δt
I.e. p=cq m ΔT
As shown in the formula, P is the power of the heating sheet and is a known quantity; inside the fuel cell, the gas mass flow rate Q in the same flow channel m Equal, different flow channels gas mass flow Q m Close, thus Q m Can be approximated as a constant value; the temperature difference delta T can be calculated through the temperature difference of two thermocouples in the temperature and humidity measurement module, namely the temperature difference delta T is a known quantity, so that the specific heat capacities of different positions can be compared, and the local humidity can be qualitatively represented.
Because the temperature and humidity measurement module 6 comprises two thermocouples and a heating piece that arrange in proper order along the air current direction, simple structure, small in size, low cost, it is little to the air current distribution interference in the runner, avoid sensor pencil to disturb to the flow structure, reduce the installation degree of difficulty simultaneously.
The inside of the variable cathode flow field block 5 is provided with a wiring groove, the temperature and humidity measurement modules 6 are embedded in the wiring groove, the influence on experimental accuracy caused by flow field interference is avoided, the number of the temperature and humidity measurement modules 6 can be adaptively selected according to the measurement area, and a certain number of the temperature and humidity measurement modules 6 are uniformly distributed on the variable cathode flow field block 5.
As shown in fig. 5-6, the variable cathode flow field block A5-1 and the variable cathode flow field block B5-2 are respectively provided with 3 temperature and humidity measuring modules 6, which are uniformly distributed along the length direction of the flow field block.
The wiring groove is also arranged on the PCB substrate 1, and the wiring groove in the variable cathode flow field block 5 is communicated with the wiring groove on the PCB substrate 1, so that accurate measurement of each temperature and humidity measurement module 6 is ensured, and the installation is convenient.
The drainage copper column 4 is of a hollow structure, when the temperature and humidity testing module 6 is not used, the hollow structure is used as a jack, a common testing block can be inserted to replace the jack to meet the flow field requirement, and meanwhile, a thermocouple wire or other sensors can be inserted into the jack to meet the testing requirement.
All the circuits in the PCB substrate 1 are embedded and are not in direct contact with the outside, so that local short circuit caused by water generated by the reaction of hydrogen and oxygen is avoided.
Although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode is characterized by comprising,
a PCB substrate (1);
the multi-resistance resistor block (2) is welded on a PCB substrate, the multi-resistance resistor block (2) comprises at least two groups of parallel resistors, each group of parallel resistors comprises a plurality of parallel resistor elements, the resistance values of the resistor elements in the same group are the same, and the resistance values of the parallel resistors in each group are different;
the multi-section type current collecting metal sheets (3), the multi-section type current collecting metal sheets (3) comprise multi-section type current collecting metal sheets, the multi-section type current collecting metal sheets (3) are arranged on the PCB substrate (1) in parallel, the multi-section type current collecting metal sheets (3) are distributed at equal intervals, the intervals among the multi-section type current collecting metal sheets (3) form a flow channel, each section of the multi-section type current collecting metal sheets (3) is internally provided with a current guiding copper column (4), and the current guiding copper columns (4) penetrate through the multi-section type current collecting metal sheets (3) and penetrate through the PCB substrate (1);
the variable cathode flow field block (5), the variable cathode flow field block (5) is detachably arranged on the PCB substrate (1), the variable cathode flow field block (5) is arranged in the flow channel, and at least one temperature and humidity measurement module (6) is arranged on the variable cathode flow field block (5).
2. The variable flow field multifunctional PCB test board for the air-cooled fuel cell cathode according to claim 1, wherein the multi-section current collecting metal sheets (3) are connected with a cell membrane electrode, the multi-resistance resistor blocks (2) are arranged in an outward-guiding mode, the multi-resistance resistor blocks (2) are arranged outside the flow field, each group of resistor elements in the parallel resistors are in one-to-one correspondence with each section of the multi-section current collecting metal sheets (3), one end of each group of resistor elements in the parallel resistors is communicated with one section of the multi-section current collecting metal sheets (3) corresponding to the resistor elements in the parallel resistors through a gold plating circuit in the PCB substrate (1), and the other end of each group of resistor elements in the parallel resistors is connected with a cell anode binding post.
3. The multifunctional variable flow field PCB test board for an air-cooled fuel cell cathode according to claim 1 or 2, wherein a wedge-shaped socket is provided on the PCB substrate (1), and the variable cathode flow field block (5) is inserted into the wedge-shaped socket and mounted on the PCB substrate (1).
4. A variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode according to claim 3, wherein the temperature and humidity measurement module (6) is composed of two thermocouples and a heating plate which are sequentially arranged along the air flow direction, and the temperature and humidity measurement module (6) is used for quantitatively measuring the temperature distribution of the cell cathode and qualitatively measuring the humidity distribution of the cell cathode.
5. The variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode of claim 4, wherein the temperature distribution is obtained by reading data of a first thermocouple facing the wind, and the qualitative data of the humidity distribution is obtained by calculating the temperature difference of two thermocouples.
6. The variable flow field multifunctional PCB test plate for an air-cooled fuel cell cathode according to claim 1, wherein the multi-section current collecting metal sheets (3) are in direct contact with the cell membrane electrode, and the multi-section current collecting metal sheets (3) are used for locally collecting current to the membrane electrode.
7. The multifunctional variable flow field PCB test board for an air-cooled fuel cell cathode according to any one of claims 1 or 2, wherein the variable cathode flow field block (5) is internally provided with a wiring groove, the temperature and humidity measurement module (6) is embedded in the wiring groove, the PCB substrate (1) is also provided with the wiring groove, and the wiring groove in the variable cathode flow field block (5) is communicated with the wiring groove on the PCB substrate (1).
8. The multifunctional variable flow field PCB test board for an air-cooled fuel cell cathode according to claim 7, wherein the temperature and humidity measurement modules (6) are uniformly distributed on the variable cathode flow field block (5) along the length direction of the variable cathode flow field block (5).
9. The variable flow field multifunctional PCB test board for an air-cooled fuel cell cathode according to claim 1 or 2, wherein the drainage copper pillar (4) is disposed in the middle of each section of the multi-section current collecting metal sheet (3) for guiding the current collected by the multi-section current collecting metal sheet (3) to the back surface of the PCB substrate (1).
10. The multifunctional PCB test board for a variable flow field of an air-cooled fuel cell cathode according to claim 9, wherein the drainage copper pillar (4) is a hollow structure, and the hollow structure is used as a jack, inserted into a common test block, or inserted into a sensor when the temperature and humidity measurement module (6) is not used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310763625.2A CN116930776B (en) | 2023-06-27 | 2023-06-27 | Variable flow field multifunctional PCB test board for air-cooled fuel cell cathode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310763625.2A CN116930776B (en) | 2023-06-27 | 2023-06-27 | Variable flow field multifunctional PCB test board for air-cooled fuel cell cathode |
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| Publication Number | Publication Date |
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| CN116930776A CN116930776A (en) | 2023-10-24 |
| CN116930776B true CN116930776B (en) | 2024-02-02 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245920A (en) * | 2013-04-10 | 2013-08-14 | 同济大学 | Multifunctional fuel cell on-line testing printed circuit board |
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| CN112229537A (en) * | 2020-09-17 | 2021-01-15 | 电子科技大学 | Subarea test system for detecting current and temperature distribution of fuel cell |
| CN113030736A (en) * | 2021-03-02 | 2021-06-25 | 上海交通大学 | Integrated fuel cell multifunctional on-line testing device |
| CN113701824A (en) * | 2021-09-29 | 2021-11-26 | 中国科学院大连化学物理研究所 | Device and method for testing local current density-temperature distribution of fuel cell |
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2023
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| CN103245920A (en) * | 2013-04-10 | 2013-08-14 | 同济大学 | Multifunctional fuel cell on-line testing printed circuit board |
| CN108562783A (en) * | 2018-04-13 | 2018-09-21 | 武汉理工大学 | A kind of subregion test system and method for cold boot of fuel cell current density and temperature |
| CN208507826U (en) * | 2018-07-05 | 2019-02-15 | 清华大学 | The variable board-like fuel cell test device in flow field |
| CN110176613A (en) * | 2019-07-05 | 2019-08-27 | 武汉雄韬氢雄燃料电池科技有限公司 | A kind of fuel cell pile resistance test system and method |
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| CN112229537A (en) * | 2020-09-17 | 2021-01-15 | 电子科技大学 | Subarea test system for detecting current and temperature distribution of fuel cell |
| CN113030736A (en) * | 2021-03-02 | 2021-06-25 | 上海交通大学 | Integrated fuel cell multifunctional on-line testing device |
| CN113701824A (en) * | 2021-09-29 | 2021-11-26 | 中国科学院大连化学物理研究所 | Device and method for testing local current density-temperature distribution of fuel cell |
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