Proton exchange membrane impedance test fixture

Abstract

The utility model relates to a proton exchange membrane impedance test fixture, which comprises an upper cover plate and a lower cover plate, a positioning concave platform is formed on the lower end face of the upper cover plate, an upper template with a hollow middle part is inserted in the positioning concave platform, the lower end face of the upper template is abutted against a lower template, and the lower template is connected with the lower cover plate. Positioning holes are formed in the four corners of the upper die plate and the four corners of the lower die plate and used for containing positioning pins. The middle part of the lower cover plate is provided with a hollow test part corresponding to the surface of the proton exchange membrane; the periphery of the hollow-out testing part is provided with a positioning assembly in a vertically upward extending manner. The positioning assembly is used for abutting against and fixing the upper cover plate. The test surface of the proton exchange membrane is changed to be downward, so that the problem of water accumulation on the test surface of the proton exchange membrane is avoided, and the accuracy and the stability of impedance data of the proton exchange membrane are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of proton exchange membrane impedance testing, in particular to a proton exchange membrane impedance testing fixture. Background Art

[0002] In the prior art, when measuring the impedance of the membrane plane of the proton exchange membrane, the fixture used includes a fixture seat, two copper sheets and four electrode clips. When using the current fixture for measurement, the measuring surface of the proton exchange membrane is uniformly facing upward, which will cause water to accumulate on the measuring surface of the proton exchange membrane in the temperature and humidity chamber, thereby causing the water content of the membrane to be high, and ultimately affecting the impedance measurement data of the proton exchange membrane. Utility Model Content

[0003] The utility model aims to provide a proton exchange membrane impedance test fixture, which solves the problem of easy water accumulation on the proton exchange membrane measurement surface in the prior art and improves the measurement accuracy of the proton exchange membrane impedance.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] The utility model provides a proton exchange membrane impedance test fixture, comprising:

[0006] Upper cover and lower cover,

[0007] A positioning recess is formed on the lower end surface of the upper cover plate, an upper template with a hollow middle portion is inserted into the positioning recess, the lower end surface of the upper template abuts against the lower template, and positioning holes are formed at the four corners of the upper template and the lower template, and the positioning holes are used to accommodate positioning pins;

[0008] A hollow test portion corresponding to the surface of the proton exchange membrane is provided in the middle of the lower cover plate; a positioning component is vertically extended upward from the periphery of the hollow test portion; and the positioning component is used to abut and fix the upper cover plate.

[0009] Furthermore, the positioning recess is H-shaped, and the four ends of the positioning recess are respectively formed with grooves that penetrate the front and rear end surfaces of the upper cover plate.

[0010] Furthermore, a copper sheet is provided between the upper template and the lower template, and the positioning hole is provided on the copper sheet.

[0011] Furthermore, the upper template and the lower template have the same shape and size.

[0012] Furthermore, the positioning assembly includes a positioning frame and a positioning rod adjacent to and perpendicular to the positioning frame.

[0013] Furthermore, the middle portion of the positioning frame is hollowed out.

[0014] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0015] The utility model discloses a proton exchange membrane impedance testing fixture, which fixes and clamps the proton exchange membrane by an upper cover plate and a lower cover plate, and at the same time, a downwardly facing hollow testing portion exposing the surface of the proton exchange membrane is provided in the middle of the lower cover plate, so as to perform an impedance test on the proton exchange membrane through the hollow testing portion. Compared with the prior art in which the proton exchange membrane is uniformly tested with its face upward, the utility model avoids the problem that water accumulates on the proton exchange membrane measuring surface in a temperature and humidity chamber, thereby causing the water content of the membrane to be too high, and finally affecting the impedance measurement data of the proton exchange membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of a proton exchange membrane impedance test fixture provided by the utility model;

[0018] Figure 2 The utility model is a schematic diagram of the split structure of a proton exchange membrane impedance test fixture provided by the utility model.

[0019] The reference numerals are described as follows:

[0020] 1. Upper cover; 101. Positioning concave platform; 2. Lower cover; 201. Hollow test part; 202. Positioning assembly; 2020. Positioning frame; 2021. Positioning rod; 3. Upper template; 4. Lower template; 5. Positioning hole; 6. Positioning pin; 7. Copper sheet. DETAILED DESCRIPTION

[0021] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 and Figure 2 The proton exchange membrane impedance testing fixture includes an upper cover plate 1 and a lower cover plate 2.

[0023] The shape and size of the upper cover plate 1 and the lower cover plate 2 are not limited and can be changed according to the size of the proton exchange membrane. The upper cover plate 1 and the lower cover plate 2 in the utility model are both square and have the same size.

[0024] A positioning recess 101 is formed on the lower end surface of the upper cover plate 1, and an upper template 3 with a hollow middle portion is inserted into the positioning recess 101, and the lower end surface of the upper template 3 is abutted against the lower template 4. The upper template 3 and the lower template 4 have the same shape and size, and are used to clamp the proton exchange membrane. Of course, the upper template 3 is not limited to being inserted into the positioning recess 101, but can also be integrally formed with the positioning recess 101, or other methods that can connect the upper template 3 to the positioning recess 101 are adopted.

[0025] Furthermore, positioning holes 5 are formed at the four corners of the upper template 3 and the lower template 4. The positioning holes 5 are used to accommodate positioning pins 6. The positioning pins 6 are used to limit and fix the upper template 3 and the lower template 4. Of course, threads can also be provided in the positioning holes 5, and the positioning pins 6 can be replaced with nuts. The nuts are connected to the threads in the positioning holes 5, so that the upper template 3 and the lower template 4 can be fixedly connected.

[0026] In addition, between the upper template 3 and the lower template 4, two copper sheets 7 are also sandwiched, and the copper sheets 7 are also provided with positioning holes 5 as mentioned above, so the aforementioned positioning pins 6 are actually inserted between the upper template 3, the lower template 4 and the copper sheets 7 for clamping and fixing. The function of the copper sheets 7 is to provide a conductance path for the proton exchange membrane and promote proton transmission. Of course, platinum sheets, gold-plated sheets or other metal materials with good electrical conductivity can also be used to carry out proton transmission and provide a conductance path. In addition, a polymer material with good electrical conductivity can also be used as the base material of the proton exchange membrane test fixture to provide a more stable conductance path.

[0027] The cross section of the positioning recess 101 is H-shaped as a whole, and grooves penetrating the front and rear end surfaces of the upper cover plate 1 are formed at the four ends of the positioning recess 101. The shape and structure of the positioning recess 101 combined with the groove can limit and fix the upper template 3, and then limit and fix the lower template 4.

[0028] The middle part of the aforementioned lower cover plate 2 is hollowed out to form a hollow test portion 201 corresponding to the surface of the proton exchange membrane, and a positioning component 202 is vertically extended upward from the periphery of the hollow test portion 201. The positioning component 202 is used to abut and fix the aforementioned upper cover plate 1 to prevent the fixture from being misaligned during the test and affecting the impedance test effect of the proton exchange membrane.

[0029] Specifically, the above-mentioned positioning assembly 202 includes two groups of positioning frames 2020 and positioning rods 2021 adjacent to and perpendicular to the positioning frames 2020. Of course, the above-mentioned positioning assembly 202 can also be set as only two groups of adjacent and perpendicular positioning frames 2020, or can also be set as only two groups of adjacent and perpendicular positioning rods 2021, as long as it can play a role in abutting and fixing the aforementioned upper cover plate 1.

[0030] The middle part of the positioning frame 2020 is hollowed out, and thus a membrane surface observation window is reserved, so that the real-time state of the proton exchange membrane during the test can be observed. In addition, the hollow setting can provide a breathable external environment for the proton exchange membrane, reduce the phenomenon of water accumulation on the surface of the proton exchange membrane, and improve the accuracy of the impedance test of the proton exchange membrane.

[0031] In summary, the utility model provides a proton exchange membrane impedance test fixture, by changing the conventional setting method of the proton exchange membrane test surface facing upward, the proton exchange membrane is clamped between the upper cover plate 1 and the lower cover plate 2 through the upper template 3 and the lower template 4, and is fixed by the positioning pin 6, and a hollow portion corresponding to the surface of the proton exchange membrane is opened on the lower cover plate 2, thereby setting the test surface of the proton exchange membrane to face downward, thereby avoiding the problem that when the impedance test is performed in the temperature and humidity chamber, the measuring surface of the proton exchange membrane is easy to accumulate water, thereby causing the water content of the proton exchange membrane to increase, and then affecting the accuracy of the impedance data. The impedance data of the proton exchange membrane finally measured is accurate and stable.

[0032] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A proton exchange membrane impedance test fixture, characterized in that: include: The upper cover plate (1) and the lower cover plate (2), A positioning recess (101) is formed on the lower end surface of the upper cover plate (1), an upper template (3) with a hollow middle portion is inserted into the positioning recess (101), the lower end surface of the upper template (3) is in contact with the lower template (4), and positioning holes (5) are formed at the four corners of the upper template (3) and the lower template (4), and the positioning holes (5) are used to accommodate positioning pins (6); A hollow testing portion (201) corresponding to the surface of the proton exchange membrane is provided in the middle of the lower cover plate (2); a positioning component (202) is provided on the periphery of the hollow testing portion (201) extending vertically upwards; the positioning component (202) is used to abut and fix the upper cover plate (1).

2. A proton exchange membrane impedance test fixture according to claim 1, characterized in that: The positioning recessed platform (101) is H-shaped, and the four ends of the positioning recessed platform are respectively formed with grooves that penetrate the front and rear end surfaces of the upper cover plate (1).

3. A proton exchange membrane impedance test fixture according to claim 1, characterized in that: A copper sheet (7) is provided between the upper template (3) and the lower template (4), and the positioning hole (5) is provided on the copper sheet (7).

4. A proton exchange membrane impedance test fixture according to claim 1, characterized in that: The upper template (3) and the lower template (4) have the same shape and size.

5. A proton exchange membrane impedance test fixture according to claim 1, characterized in that: The positioning assembly (202) comprises a positioning frame (2020) and a positioning rod (2021) adjacent to and perpendicular to the positioning frame (2020).

6. A proton exchange membrane impedance test fixture according to claim 5, characterized in that: The positioning frame (2020) is hollowed out in the middle.

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