阅读说明：本技术 燃料电池夹具及测试装置 (Fuel cell clamp and testing device ) 是由 杨波 徐钦 欧绍辉 潘军 郑海光 杨怡萍 何彬彬 黄旭锐 于丰源 张行 卢彦杉 于 2021-08-03 设计创作，主要内容包括：本发明涉及一种燃料电池夹具及测试装置,用于膜电极封装的夹持,该燃料电池夹具包括沿膜电极封装厚度方向依次设置的第一端板、第一绝缘板、第一集流板、阳极板、阴极板、第二集流板、第二绝缘板、第二端板,膜电极封装可固定于阳极板与阴极板之间,其中：第一端板上开设有贯穿其厚度的阳极气路入口、阳极气路出口、阴极气路入口及阴极气路出口,且阳极气路入口与阴极气路出口相邻；第一绝缘板、第一集流板、阳极板、阴极板、膜电极封装上形成有气路通道,气路通道与阳极气路入口、阳极气路出口、阴极气路入口及阴极气路出口均连通；该燃料电池夹具可降低膜电极性能测试误差,并提高燃料电池夹具的耐久性性能。(The invention relates to a fuel cell clamp and a testing device, which are used for clamping a membrane electrode package, the fuel cell clamp comprises a first end plate, a first insulating plate, a first current collecting plate, an anode plate, a cathode plate, a second current collecting plate, a second insulating plate and a second end plate which are sequentially arranged along the thickness direction of the membrane electrode package, the membrane electrode package can be fixed between the anode plate and the cathode plate, wherein: the first end plate is provided with an anode gas path inlet, an anode gas path outlet, a cathode gas path inlet and a cathode gas path outlet which penetrate through the thickness of the first end plate, and the anode gas path inlet is adjacent to the cathode gas path outlet; the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package are provided with gas path channels, and the gas path channels are communicated with an anode gas path inlet, an anode gas path outlet, a cathode gas path inlet and a cathode gas path outlet; the fuel cell clamp can reduce the membrane electrode performance test error and improve the durability performance of the fuel cell clamp.)

1. The utility model provides a fuel cell anchor clamps for membrane electrode package's centre gripping, its characterized in that includes and follows membrane electrode package thickness direction sets gradually first end plate, first insulating plate, first current collector, anode plate, negative plate, second current collector, second insulation board, second end plate, membrane electrode package is fixed in the anode plate with between the negative plate, wherein:

the first end plate is provided with an anode gas path inlet, an anode gas path outlet, a cathode gas path inlet and a cathode gas path outlet which penetrate through the thickness of the first end plate, and the anode gas path inlet is adjacent to the cathode gas path outlet;

and the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package are provided with gas path channels, and the gas path channels are communicated with the anode gas path inlet, the anode gas path outlet, the cathode gas path inlet and the cathode gas path outlet.

2. The fuel cell clamp according to claim 1, wherein a plurality of through holes penetrating the first insulating plate, the second insulating plate, and the second end plate are opened at an edge of the first end plate, fastening bolts are inserted into the through holes, and none of the first current collecting plate, the anode plate, the cathode plate, and the second current collecting plate is in contact with the fastening bolts.

3. The fuel cell clamp of claim 1, wherein the anode plate and the cathode plate are provided with serpentine flow channels on a surface facing the membrane electrode package and along a thickness direction thereof.

4. The fuel cell clamp of claim 1, wherein the first end plate defines a coolant inlet and a coolant outlet extending through a thickness thereof;

and liquid path channels are formed on the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package, and are communicated with the cooling liquid inlet and the cooling liquid outlet.

5. The fuel cell clamp of claim 1, wherein the first end plate, the first insulating plate, the first current collecting plate, the anode plate, and the cathode plate are respectively provided with a sealing groove on a surface facing the membrane electrode package and along a thickness direction thereof, and a sealing gasket is embedded in the sealing groove.

6. The fuel cell clamp of claim 1, wherein when there are a plurality of membrane electrode assemblies, the fuel cell clamp further comprises a bipolar plate, one of the bipolar plates being disposed between two adjacent membrane electrode assemblies.

7. The fuel cell clamp of claim 1, wherein the anode plate and the cathode plate are both fabricated from a graphite material.

8. The fuel cell clamp according to claim 1, further comprising a polling device, wherein each of the first current collecting plate and the second current collecting plate is provided with an electrically conductive joint extending to the outside, and the polling device is electrically connected to the electrically conductive joint.

9. The fuel cell clip of claim 1, wherein the first and second current collecting plates are made of copper material and have gold layers coated on the surfaces thereof.

10. A testing device comprising a fuel cell fixture according to any of claims 1-9.

Technical Field

The invention relates to the technical field of fuel cells, in particular to a fuel cell clamp and a testing device.

Background

The proton exchange membrane fuel cell is an energy device which directly converts chemical energy stored in fuel and oxidant into electric energy, has the advantages of high energy conversion efficiency, less environmental pollution, long service life and the like, is suitable for various occasions such as traffic, power stations, mobile power supplies and the like, and has wide market application prospect. The durability of the pem fuel cell, which is one of the major technical challenges that restrict its commercialization, is influenced by various factors such as the membrane electrode, and if it is desired to convert the chemical energy stored in the fuel and oxidant into electrical energy well, the performance requirements of each membrane electrode are high. Therefore, how to test the membrane electrode durability of the proton exchange membrane fuel cell is very important, and the method has very important significance for developing the high-performance proton exchange membrane fuel cell.

In the prior art, the durability of the proton exchange membrane fuel cell can not be truly reflected by the durability test and calculation of the proton exchange membrane fuel cell through a clamp, and the proton exchange membrane fuel cell is assembled through the fastening bolt, after the fastening bolt works at high temperature for a long time, the short circuit risk is easy to occur with the proton exchange membrane fuel cell, the durability test error of the proton exchange membrane fuel cell is larger, even the durability test of the proton exchange membrane fuel cell can not be carried out, in addition, the traditional clamp ensures the good contact between the seal of the proton exchange membrane fuel cell and the collector plate by means of the high pretightening force of the fastening screw in the assembly of the proton exchange membrane fuel cell, but at the same time, the compressibility of the membrane electrode cannot be well controlled, so that the durability test error of the proton exchange membrane fuel cell is large, and the test results all cause the scrapping of the clamp.

Disclosure of Invention

In view of the above, it is necessary to provide a fuel cell fixture and a testing apparatus for solving the problems of the fuel cell fixture, such as large error in testing the durability of the pem fuel cell and poor durability.

The utility model provides a fuel cell anchor clamps for membrane electrode package's centre gripping includes along membrane electrode package thickness direction sets gradually first end plate, first insulating plate, first current collector, anode plate, negative plate, second current collector, second insulation board, second end plate, membrane electrode package is fixed in the anode plate with between the negative plate, wherein:

the first end plate is provided with an anode gas path inlet, an anode gas path outlet, a cathode gas path inlet and a cathode gas path outlet which penetrate through the thickness of the first end plate, and the anode gas path inlet is adjacent to the cathode gas path outlet;

and the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package are provided with gas path channels, and the gas path channels are communicated with the anode gas path inlet, the anode gas path outlet, the cathode gas path inlet and the cathode gas path outlet.

The fuel cell clamp is used for clamping the membrane electrode package and detecting the durability performance, and the membrane electrode package is clamped and fixed between the anode plate and the cathode plate by the fuel cell clamp to detect the durability performance of the membrane electrode; an anode gas path inlet, an anode gas path outlet, a cathode gas path inlet and a cathode gas path outlet which penetrate through the thickness of the first end plate are formed on the first end plate, gas path channels are formed on the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package, and the gas path channels are communicated with the anode gas path inlet, the anode gas path outlet, the cathode gas path inlet and the cathode gas path outlet; the hydrogen of external supply enters into fuel cell anchor clamps through positive pole gas circuit entry in, external air enters into fuel cell anchor clamps through negative pole gas circuit entry in, hydrogen flows in the gas circuit passageway with the air, for membrane electrode performance detects and provides reactant gas, hydrogen after the reaction discharges to the external world through positive pole gas circuit export, water that generates after the reaction discharges through negative pole gas circuit export, and positive pole gas circuit entry is adjacent with negative pole gas circuit export, the water accessible proton membrane infiltration of negative pole gas circuit export gathering humidifies the hydrogen of positive pole gas circuit entry, improve the hydrogen humidification that fuel cell anchor clamps let in, then reduce membrane electrode performance test error, and improve the durability performance of fuel cell anchor clamps.

In one embodiment, a plurality of through holes penetrating through the first insulating plate, the second insulating plate and the second end plate are formed in the edge of the first end plate, fastening bolts penetrate through the through holes, and the first current collecting plate, the anode plate, the cathode plate and the second current collecting plate are not in contact with the fastening bolts.

In one embodiment, the anode plate and the cathode plate are provided with serpentine flow channels on one surface facing the membrane electrode package and along the thickness direction of the anode plate and the cathode plate.

In one embodiment, the first end plate is provided with a cooling liquid inlet and a cooling liquid outlet which penetrate through the thickness of the first end plate;

and liquid path channels are formed on the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package, and are communicated with the cooling liquid inlet and the cooling liquid outlet.

In one embodiment, the first end plate, the first insulating plate, the first current collecting plate, the anode plate and the cathode plate are respectively provided with a sealing groove on one surface facing the membrane electrode package and along the thickness direction thereof, and a sealing gasket is embedded in the sealing groove.

In one embodiment, when there are a plurality of membrane electrode assemblies, the fuel cell clamp further comprises a bipolar plate, one of the bipolar plates being disposed between two adjacent membrane electrode assemblies.

In one embodiment, the anode plate and the cathode plate are both made of graphite materials.

In one embodiment, the intelligent detection device further comprises a patrol instrument, wherein the first current collecting plate and the second current collecting plate are respectively provided with a conductive joint extending to the outside, and the patrol instrument is electrically connected with the conductive joints.

In one embodiment, the first current collecting plate and the second current collecting plate are both made of copper materials, and gold layers are coated on the surfaces of the first current collecting plate and the second current collecting plate.

A testing apparatus comprising the fuel cell fixture of any of the above claims.

The testing device is used for clamping the membrane electrode package and detecting the durability performance, and comprises a fuel cell clamp, wherein the fuel cell clamp clamps and fixes the membrane electrode package between an anode plate and a cathode plate to detect the performance of the membrane electrode; an anode gas path inlet, an anode gas path outlet, a cathode gas path inlet and a cathode gas path outlet which penetrate through the thickness of the first end plate are formed on the first end plate, gas path channels are formed on the first insulating plate, the first current collecting plate, the anode plate, the cathode plate and the membrane electrode package, and the gas path channels are communicated with the anode gas path inlet, the anode gas path outlet, the cathode gas path inlet and the cathode gas path outlet; the hydrogen of external supply enters into to the fuel cell anchor clamps in through positive pole gas circuit entry, external air enters into to the fuel cell anchor clamps in through negative pole gas circuit entry, hydrogen flows in the gas circuit passageway with the air, detect and provide reactant gas for membrane electrode performance, hydrogen after the reaction passes through positive pole gas circuit export and discharges to the external world, water that generates after the reaction passes through negative pole gas circuit export and discharges, and positive pole gas circuit entry is adjacent with negative pole gas circuit export, the water accessible proton membrane infiltration of negative pole gas circuit export gathering humidifies the hydrogen of positive pole gas circuit entry, improve the hydrogen humidification that the fuel cell anchor clamps let in, reduce membrane electrode performance test error then, and improve detection device's durability performance.

Drawings

FIG. 1 is an exploded view of a fuel cell clamp according to the present invention;

FIG. 2 is a schematic view of the position of the opening in the first end plate according to the present invention;

FIG. 3 is an exploded view of a fuel cell fixture when holding a plurality of membrane electrode assemblies;

figure 4 is a schematic view of a fuel cell fixture assembly when holding a plurality of membrane electrode assemblies.

Reference numerals:

100. a fuel cell fixture; 110. a first end plate; 111. an anode gas path inlet; 112. an anode gas path outlet; 113. a cathode gas path inlet; 114. a cathode gas path outlet; 115. a through hole; 116. positioning holes; 117. a coolant inlet; 118. a coolant outlet; 120. a first insulating plate; 121. a sealing groove; 122. sealing gaskets; 130. a first collector plate; 131. a conductive joint; 140. an anode plate; 150. packaging a membrane electrode; 151. an outer frame; 152. a bipolar plate; 160. a cathode plate; 161. a serpentine flow channel; 170. a second collector plate; 180. a second insulating plate; 190. a second end plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical scheme provided by the embodiment of the invention is described below by combining the accompanying drawings.

As shown in fig. 1 and fig. 2, the present invention provides a fuel cell fixture 100 for clamping a membrane electrode package 150 and testing durability performance, the fuel cell fixture 100 includes a first end plate 110, a first insulating plate 120, a first current collecting plate 130, an anode plate 140, a cathode plate 160, a second current collecting plate 170, a second insulating plate 180, and a second end plate 190, and the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160, the second current collecting plate 170, the second insulating plate 180, and the second end plate 190 are sequentially disposed along a thickness direction of the membrane electrode package 150, and the membrane electrode package 150 can be clamped and fixed between the anode plate 140 and the cathode plate 160 to test the durability performance of a membrane electrode (not shown), wherein:

set up the positive pole gas circuit entry 111 that runs through its thickness on the first end plate 110, positive pole gas circuit export 112, negative pole gas circuit entry 113 and negative pole gas circuit export 114, the hydrogen of external supply accessible positive pole gas circuit entry 111 gets into to inside fuel cell anchor clamps 100, outside air accessible negative pole gas circuit entry 113 gets into to inside fuel cell anchor clamps 100, in order to provide the required reaction gas of membrane electrode durability performance detection, hydrogen after the reaction discharges to the external world through positive pole gas circuit export 112, the water of reaction generation discharges to the external world through negative pole gas circuit export 114, and positive pole gas circuit entry 111 and negative pole gas circuit export 114 are close to the setting, can make the water of negative pole gas circuit export 114 gathering pass through proton membrane infiltration and carry out the humidification to the hydrogen of positive pole gas circuit entry 111. It should be noted that, in the prior art, a humidifier is additionally used to humidify the anode gas, but in this embodiment, the anode gas path inlet 111 and the cathode gas path outlet 114 are arranged close to each other, the water collected by the cathode gas path outlet 114 humidifies the hydrogen gas at the anode gas path inlet 111, and the water and the humidifier cooperate to humidify the hydrogen gas introduced into the anode gas path inlet 111, or even replace the humidifier to humidify the hydrogen gas introduced into the anode gas path inlet 111, so that the membrane electrode performance test error is reduced, and the durability performance of the fuel cell clamp 100 is improved.

The first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160, and the membrane electrode package 150 are formed with gas path channels, the gas path channels are all communicated with the anode gas path inlet 111, the anode gas path outlet 112, the cathode gas path inlet 113, and the cathode gas path outlet 114, and the gas path channels facilitate the flow of hydrogen and air inside the fuel cell fixture 100.

It should be noted that the membrane electrode package 150 includes a membrane electrode and an outer frame 151, the outer frame 151 can fix the membrane electrode, and during the process of clamping the membrane electrode package 150 by the fuel cell fixture 100, the outer frame 151 cannot be compressed, so that the compression controllability of the membrane electrode can be realized, and the detection accuracy of the membrane electrode durability performance can be improved. When the compression amount of the membrane electrode is too small, poor contact between the membrane electrode and the fuel cell clamp 100 is easily caused, the resistance is too large, and the detection error of the durability performance of the membrane electrode is large; when the compression amount of the membrane electrode is too large, the transmission of reaction gas is easy to be blocked, and the membrane electrode lacks fuel, so that the durability performance of the membrane electrode cannot be detected.

The fuel cell clamp 100 is used for clamping the membrane electrode package 150 and detecting the durability performance, and the fuel cell clamp 100 clamps and fixes the membrane electrode package 150 between the anode plate 140 and the cathode plate 160 to detect the durability performance of the membrane electrode package; the first end plate 110 is provided with an anode gas path inlet 111, an anode gas path outlet 112, a cathode gas path inlet 113 and a cathode gas path outlet 114 which penetrate through the thickness of the first end plate, gas path channels are formed on the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160 and the membrane electrode package 150, and the gas path channels are communicated with the anode gas path inlet 111, the anode gas path outlet 112, the cathode gas path inlet 113 and the cathode gas path outlet 114; the hydrogen supplied from the outside enters the fuel cell clamp 100 through the anode gas path inlet 111, the outside air enters the fuel cell clamp 100 through the cathode gas path inlet 113, the hydrogen and the air flow in the gas path channel to provide reaction gas for membrane electrode performance detection, the hydrogen after reaction is discharged to the outside through the anode gas path outlet 112, the water generated after reaction is discharged through the cathode gas path outlet 114, the anode gas path inlet 111 is adjacent to the cathode gas path outlet 114, the water gathered by the cathode gas path outlet 114 can humidify the hydrogen at the anode gas path inlet 111 through proton membrane permeation, the humidification degree of the hydrogen introduced into the fuel cell clamp 100 is improved, the membrane electrode performance test error is reduced, and the durability performance of the fuel cell clamp 100 is improved.

In order to realize the fixed connection of the fuel cell fixture 100, as shown in fig. 1 and 2, in a preferred embodiment, a plurality of through holes 115 penetrating through the thickness of each of the first end plate 110, the first insulating plate 120, the second insulating plate 180, and the second end plate 190 are formed, a plurality of sets of through holes 115 are formed in the first end plate 110, the first insulating plate 120, the second insulating plate 180, and the second end plate 190, and the axes of the plurality of sets of through holes 115 are aligned in the thickness direction of the membrane electrode package 150. And fastening bolts (not shown) are arranged in the through holes 115 in a penetrating manner, specifically, a single fastening bolt is arranged in the through holes 115 in the same group in a penetrating manner, and the length and the thread diameter of the fastening bolt can be specifically set according to requirements. The first end plate 110, the first insulating plate 120, the second insulating plate 180 and the second end plate 190 are fixedly connected into a whole through fastening bolts penetrating through the through holes 115. And the first current collecting plate 130, the anode plate 140, the cathode plate 160 and the second current collecting plate 170 are not in contact with the fastening bolt, specifically, in the embodiment, the first current collecting plate 130, the anode plate 140, the cathode plate 160 and the second current collecting plate 170 are set to be smaller, so that the first current collecting plate 130, the anode plate 140, the cathode plate 160 and the second current collecting plate 170 are prevented from being in contact with the fastening bolt, in the fastening process of the fastening bolt, the stress applied to the first current collecting plate 130, the anode plate 140, the cathode plate 160 and the second current collecting plate 170 is uniformly distributed, the risk of short circuit between the fastening bolt and the fuel cell clamp 100 after the fastening bolt works at a high temperature for a long time is reduced, the performance test error of the fuel cell clamp 100 on the membrane electrode is reduced, and the durability of the fuel cell clamp 100 is improved.

It should be noted that, in one embodiment, the through holes 115 may be provided in four sets, and the four sets of through holes 115 are respectively located at four opposite corners of the first end plate 110, the first insulating plate 120, the second insulating plate 180, and the second end plate 190. In another embodiment, the through holes 115 may be uniformly distributed at the edges of the first end plate 110, the first insulating plate 120, the second insulating plate 180, and the second end plate 190. The reliability of the fixed connection between the first end plate 110, the first insulating plate 120, the second insulating plate 180, and the second end plate 190 can be improved. Of course, in other embodiments, the number and the number of the through holes 115 may be specifically set according to the processing technique and the positional relationship of the fuel cell jig 100.

In order to realize the positioning connection between the fuel cell fixtures 100, in a preferred embodiment, a plurality of positioning holes 116 penetrating the thickness of each of the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160, the second current collecting plate 170, the second insulating plate 180, and the second end plate 190 are formed, a plurality of positioning holes 116 are formed in each of the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160, the second current collecting plate 170, the second insulating plate 180, and the second end plate 190, the axes of the positioning holes 116 in the same group are aligned in the thickness direction of the membrane electrode package 150, and positioning pins (not shown) are inserted into the positioning holes 116. Specifically, a single positioning pin is arranged in the same group of positioning holes 116 in a penetrating manner, and the length and the diameter of the positioning pin can be specifically set according to requirements. The positioning connection among the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160, the second current collecting plate 170, the second insulating plate 180 and the second end plate 190 is realized through positioning pins penetrating in the positioning holes 116.

In order to distribute and diffuse the reactant gas uniformly throughout the fuel cell fixture 100, in a preferred embodiment, as shown in fig. 1, the anode plate 140 is provided with a serpentine channel 161 on a surface facing the membrane electrode package 150, the serpentine channel 161 has a certain depth along the thickness direction of the anode plate 140, similarly, the cathode plate 160 is provided with a serpentine channel 161 on a surface facing the membrane electrode package 150, and the serpentine channel 161 has a certain depth along the thickness direction of the cathode plate 160, so that the reactant gas can be distributed and diffused uniformly throughout the fuel cell fixture 100, so as to provide the reactant gas required by the fuel cell fixture 100 for membrane electrode performance detection, and improve the membrane electrode performance detection accuracy.

It should be noted that the serpentine channel 161 on the anode plate 140 may be integrally formed with the anode plate 140 by molding, pouring, or the like, or the serpentine channel 161 on the anode plate 140 may be formed by additionally forming the serpentine channel 161 on the anode plate 140 by other auxiliary tools after the anode plate 140 is formed; similarly, the serpentine channels 161 of the cathode plate 160 may be integrally formed with the cathode plate 160 by molding, pouring, or the like, or the serpentine channels 161 of the cathode plate 160 may be formed by separately forming the serpentine channels 160 after the cathode plate 160 is formed by other auxiliary tools. The specific opening manner of the serpentine channel 161 is not limited in the present invention. In addition, the serpentine channels 161 of the anode plate 140 and the cathode plate 160 can be a plurality of sets, and the number of the serpentine channels 161 can be specifically set according to the requirement.

In order to control the temperature of the membrane electrode reaction region, as shown in fig. 1 and 2, in a preferred embodiment, a cooling fluid inlet 117 and a cooling fluid outlet 118 are formed on the first end plate 110, and both the cooling fluid inlet 117 and the cooling fluid outlet 118 penetrate through the first end plate 110. In addition, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160, and the membrane electrode package 150 have a fluid passage formed therein, and the fluid passage communicates with the coolant inlet 117 and the coolant outlet 118. The coolant may enter through the coolant inlet 117, enter into the reaction region of the membrane electrode through the fluid path channel, and then be discharged to the outside through the coolant outlet 118. Because the fuel cell can continuously release heat in the reaction process, the temperature of the membrane electrode reaction area can be reduced by introducing cooling liquid into the fuel cell clamp 100, and the membrane electrode is prevented from being burnt and even damaging the galvanic pile due to the out-of-control temperature of the membrane electrode reaction area.

In order to ensure the sealing performance of the fuel cell fixture 100, as shown in fig. 1, in a preferred embodiment, the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, and the cathode plate 160 are all provided with a sealing groove 121, the sealing groove 121 is located on a side facing the membrane electrode package 150, and a sealing gasket 122 is embedded in the sealing groove 121, so that the sealing performance inside the fuel cell fixture 100 can be ensured, a gap is prevented from being formed among the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, and the cathode plate 160, and a reaction gas and a cooling liquid introduced into the fuel cell fixture 100 can leak from the gap. Specifically, the sealing groove 121 may be integrally formed with the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, and the cathode plate 160 by molding, casting, or the like, and the sealing groove 121 may also be formed by separately opening the first end plate 110, the first insulating plate 120, the first current collecting plate 130, the anode plate 140, and the cathode plate 160 by using other auxiliary tools after molding.

In order to improve the membrane electrode durability performance detection efficiency, in a preferred embodiment, as shown in fig. 3 and 4, a plurality of membrane electrode packages 150 may be held by the fuel cell fixture 100, and when there are a plurality of membrane electrode packages 150, the fuel cell fixture 100 further includes a bipolar plate 152, and one bipolar plate 152 is disposed between two adjacent membrane electrode packages 150. Specifically, when there are two membrane electrode assemblies 150, the fuel cell fixture 100 has a bipolar plate 152 corresponding thereto, and the bipolar plate 152 is located between the two membrane electrode assemblies 150; when there are three membrane electrode assemblies 150, the fuel cell fixture 100 has two bipolar plates 152 corresponding thereto, and the two bipolar plates 152 are respectively located between the two adjacent membrane electrode assemblies 150. It should be noted that the bipolar plate 152 is composed of an anode plate 140 and a cathode plate 160, and the bipolar plate 152 is provided with serpentine channels 161 on both sides facing the membrane electrode package 150, and the serpentine channels 161 have a certain depth along the thickness direction of the bipolar plate 152.

It should be noted that, in the fastening process of the fuel cell clamp 100, the bipolar plate 152 is not in contact with the fastening bolt, in addition, the bipolar plate 152 is provided with a sealing groove 121 on both sides facing the membrane electrode package 150, and a sealing gasket 122 is embedded in the sealing groove 121, so as to ensure the sealing performance inside the fuel cell clamp 100.

In order to further improve the durability of the fuel cell fixture 100, in a preferred embodiment, as shown in fig. 1 and 3, the anode plate 140 and the cathode plate 160 are made of graphite materials, and the bipolar plate 152 is also made of graphite materials when the durability performance of the membrane electrode packages 150 is tested. Because the graphite material has better rigidity, the durability of the fuel cell clamp 100 can be improved; meanwhile, when the durability performance of the plurality of membrane electrode packages 150 is detected, the phenomenon that the membrane electrode is single-low due to uneven reaction gas intake can be effectively avoided, and the detection precision of the durability performance of the membrane electrode is improved.

In order to control and monitor the operating current and voltage inside the fuel cell fixture 100, in a preferred embodiment, as shown in fig. 1, the fuel cell fixture 100 further includes a polling device (not shown), the first current collecting plate 130 is provided with an electrically conductive connector 131 extending to the outside, and the second current collecting plate 170 is also provided with an electrically conductive connector 131 extending to the outside. Specifically, the conductive connector 131 may be disposed on the first current collecting plate 130 and the second current collecting plate 170 by welding, screwing, and the like, and the conductive connector 131 is connected to an electronic load, so as to control and monitor the operating current and voltage. The polling instrument is electrically connected with the conductive connector 131 through a wire, and monitors the current and voltage of the membrane electrode in real time, so as to avoid the single-low phenomenon on the membrane electrode, which causes the fuel cell clamp 100 to have errors in the detection of the membrane electrode performance.

In order to simplify the manufacturing process of the first current collecting plate 130 and the second current collecting plate 170, as shown in fig. 1 and 3, a preferred embodiment is that the first current collecting plate 130 is made of copper and the second current collecting plate 170 is also made of copper, the first current collecting plate 130 and the second current collecting plate 170 made of copper in the embodiment are easy to process, low in processing cost and easy to thin, the manufacturing process of the first current collecting plate 130 and the second current collecting plate 170 can be simplified, the volume of the fuel cell fixture 100 can be reduced, and the miniaturization design of the fuel cell fixture 100 can be realized. And the mechanical strength of copper is high, which can improve the bearing capacity of the first current collecting plate 130 and the second current collecting plate 170, and prolong the service life of the fuel cell fixture 100.

In addition, gold layers are coated on the surfaces of the first current collecting plate 130 and the second current collecting plate 170 to improve the conductivity of the first current collecting plate 130 and the second current collecting plate 170, and since the fuel cell fixture 100 needs to detect the performance of the membrane electrode under an acidic or alkaline condition, the gold layers are coated on the surfaces of the first current collecting plate 130 and the second current collecting plate 170 to enhance the corrosion resistance of the first current collecting plate 130 and the second current collecting plate 170, and improve the electron transfer efficiency and the service life of the fuel cell fixture 100.

As shown in fig. 1, 2, 3 and 4, the present invention also provides a testing apparatus including the fuel cell fixture 100 according to any one of the above-mentioned embodiments.

The testing device is used for clamping the membrane electrode package 150 and detecting the durability performance, and comprises a fuel cell clamp 100, wherein the fuel cell clamp 100 clamps and fixes the membrane electrode package 150 between an anode plate 140 and a cathode plate 160 to detect the performance of the membrane electrode; the first end plate 110 is provided with an anode gas path inlet 111, an anode gas path outlet 112, a cathode gas path inlet 113 and a cathode gas path outlet 114 which penetrate through the thickness of the first end plate, gas path channels are formed on the first insulating plate 120, the first current collecting plate 130, the anode plate 140, the cathode plate 160 and the membrane electrode package 150, and the gas path channels are communicated with the anode gas path inlet 111, the anode gas path outlet 112, the cathode gas path inlet 113 and the cathode gas path outlet 114; the hydrogen that external supply enters into fuel cell anchor clamps 100 through anode gas circuit entry 111, external air enters into fuel cell anchor clamps 100 through cathode gas circuit entry 113, hydrogen flows in the gas circuit passageway with the air, detect and provide reactant gas for membrane electrode performance, hydrogen after the reaction discharges to the external world through anode gas circuit exit 112, water that generates after the reaction discharges through cathode gas circuit exit 114, and anode gas circuit entry 111 is adjacent with cathode gas circuit exit 114, the water of cathode gas circuit exit 114 gathering can pass through proton membrane infiltration and humidify the hydrogen of anode gas circuit entry 111, improve the hydrogen humidification that fuel cell anchor clamps 100 let in, then reduce membrane electrode performance test error, and improve detection device's durability performance.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.