Portable fuel cell clamp

Abstract

The utility model provides a portable fuel cell clamp. The portable fuel cell clamp comprises a membrane electrode, a cathode plate, a cathode collector plate, a pneumatic clamping assembly, an anode plate, an anode collector plate and a mechanical holding assembly, the membrane electrode is arranged between the cathode plate and the anode plate, the cathode collector plate is arranged on one side of the cathode plate, the pneumatic clamping assembly is arranged on the outer side of the cathode collector plate, the anode collector plate is arranged on one side of the anode plate, and the mechanical holding assembly is arranged on the outer side of the anode plate. The clamp used in the membrane electrode testing process has the characteristics of simplicity in assembly, rapidness in replacement, convenience and rapidness, and capability of clearly knowing the acting force acting on the surface of the membrane electrode of the fuel cell.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell fixtures, and particularly relates to a portable fuel cell fixture. Background Art

[0002] Today, with the continuous development of fuel cell technology, fuel cell test fixtures, as important tools for fuel cell performance testing, their performance and reliability are crucial. However, there are many significant defects in the existing fuel cell test fixtures. Traditional fuel cell test fixtures usually require multiple bolts and nuts to cooperate for locking. This method not only has low work efficiency, but also due to human factors during the locking process, the force is often uneven, making it difficult to precisely control the clamping force. This results in difficulty in maintaining consistent clamping force between batches during the test, seriously affecting the assembly consistency. Due to the instability of the clamping force, the accuracy of single-cell test data cannot be effectively guaranteed.

[0003] In addition, the existing operation process is complicated, time-consuming and laborious for assembly, greatly increasing the test time cost and labor cost. For fixtures using screw locking methods, there is also the problem that the screws are prone to loosening during the test process, which will further affect the clamping effect. Moreover, since screw locking is a local force, it is easy to cause end plate deformation, resulting in uneven force on the single cell, directly affecting the performance of the single cell. Currently common clamping methods, such as hydraulic drive, motor drive, magnet adsorption, bolt fastening, etc., all have their own problems. Hydraulic drive and motor drive fixtures have complex structures and high costs; the magnet adsorption method has unstable clamping force; bolt fastening, as mentioned above, has defects such as low locking efficiency, uneven force, and easy loosening.

[0004] In summary, the existing fuel cell test fixtures cannot meet the increasingly high requirements for fuel cell performance testing, seriously restricting the development and application of fuel cell technology. Therefore, it has become an urgent task to develop a portable fuel cell fixture that can solve the above problems and improve test accuracy and work efficiency. Summary of the Invention

[0005] In view of the many technical problems that are likely to occur during the use of the above fuel cell test fixtures and affect the accuracy of fuel cell testing, a portable fuel cell fixture is provided. The utility model is based on the fixture used in the membrane electrode test process, and has the characteristics of simple assembly, rapid replacement, convenience and speed, and clearly knowing the acting force on the surface of the fuel cell membrane electrode.

[0006] The technical means adopted by the utility model are as follows:

[0007] A portable fuel cell fixture, comprising: a membrane electrode, a cathode plate, a cathode current collector plate, a pneumatic clamping assembly, an anode plate, an anode current collector plate and a mechanical clamping assembly;

[0008] The membrane electrode is placed between the cathode plate and the anode plate. A cathode current collector plate is installed on one side of the cathode plate, and a pneumatic clamping assembly is installed outside the cathode current collector plate. An anode current collector plate is installed on one side of the anode plate, and a mechanical clamping assembly is installed outside the anode plate.

[0009] Further, the pneumatic clamping assembly consists of a pressure gauge protective cover, a reset positioning pin, a pressure gauge, a reset spring, a pressure gauge locking bolt, a guide cavity, a speed control joint, an O-ring, a limit ring, a guide seat, a reset positioning pin locking bolt, a cathode electric heating rod, and a cathode buffer heat-conducting insulating gasket.

[0010] Further, the guide cavity is equipped with a pressure gauge protective cover, a pressure gauge and a speed control joint. The pressure gauge and the speed control joint body have their own threads and can be directly locked and fixed on the guide cavity. The pressure gauge protective cover is fixed to the guide cavity through the pressure gauge locking bolt.

[0011] Further, two counterbore holes are opened in the diagonal direction of the guide cavity. The reset spring is installed in this counterbore hole. The reset positioning pin sequentially passes through the reset spring, the guide cavity and the limit ring, and the reset positioning pin is fixed to the guide seat through the reset positioning pin locking bolt.

[0012] Further, the cross-section of the guide seat is fixed, and its size should be larger than the active area of the membrane electrode, and the air source force completely covers the active area of the membrane electrode.

[0013] Further, the mechanical clamping assembly consists of an adjustment bolt, a locking nut, a hoop, a positioning pin, an anode buffer heat-conducting insulating gasket, a hoop fixing bolt, an end plate, a hoop positioning pin, and an anode electric heating rod.

[0014] Further, the surface of the end plate is coated with glue and is flatly attached to the anode buffer heat-conducting insulating gasket. The end plate is provided with a deep hole for installing the anode electric heating rod. Two equidistant positioning pins are installed in the deep holes opened in the diagonal direction of the end plate. The hoop is positioned with the end plate through the hoop positioning pin. The hoop fixing bolt passes through the hoop positioning pin to lock the end plate. The hoop can complete a relative movement of 90° to 180° relative to the end plate, and the hoop is equipped with an adjustment bolt.

[0015] Due to the adoption of the above technical solutions, compared with the prior art, the present utility model has the following advantages:

[0016] 1. The portable fuel cell fixture provided by the present utility model is simple to operate, quick to disassemble and assemble, reduces the preparation time before and after testing, and improves the testing efficiency.

[0017] 2. A portable fuel cell fixture provided by the present utility model. Under the action of gas pushing, the guide seat presses the cathode current collector plate, cathode plate, membrane electrode, anode plate, and anode current collector plate against the end plate, which can better ensure the uniformity of the force on the membrane electrode. Compared with the screw-nut locking method, it has more advantages in preventing uneven force on the membrane electrode caused by the deformation of the middle part of the end plate due to locking around the end plate.

[0018] 3. A portable fuel cell fixture provided by the present utility model. The cross-sectional size of the guide seat is fixed. When used in cooperation with a pressure gauge, it can clearly know the acting force on the surface of the membrane electrode, which is more conducive to ensuring the consistency of each clamping of the membrane electrode and is of great significance for repeated testing of the fuel cell membrane electrode.

[0019] 4. A portable fuel cell fixture provided by the present utility model. It adopts a double-gantry hoop form to tightly hold and clamp the anode current collector plate, anode plate, membrane electrode, cathode plate, cathode current collector plate, and pneumatic clamping components. And the hoop is equipped with adjustment bolts. Point contact can better ensure the uniformity of the force on the membrane electrode compared with surface contact.

[0020] 5. A portable fuel cell fixture provided by the present utility model. An electric heating rod is installed inside the fixed end plate, and a heating rod is also installed on the mobile guide seat, which can better ensure the uniformity of the temperature on the surface of the fuel cell.

[0021] 6. A portable fuel cell fixture provided by the present utility model. It has a simple structure. By using a heat-conducting and insulating gasket, the end plate can be used to squeeze the anode current collector plate, or the guide seat can be used to squeeze the cathode current collector plate, which alleviates the difficulty of machining flatness of the end plate and the guide seat.

[0022] 7. A portable fuel cell fixture provided by the present utility model. After losing the gas source, the spring automatically resets, the fuel cell is unloaded, and it is more convenient and fast to disassemble and assemble the battery by rotating the hoop.

[0023] Based on the above reasons, the present utility model can be widely promoted in the technical field of fuel cell fixtures. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 It is a three-dimensional model schematic diagram of a portable fuel cell fixture described in the present utility model;

[0026] Figure 2It is a three-dimensional explosion schematic diagram of a portable fuel cell fixture described in the present utility model;

[0027] Figure 3 It is an explosion schematic diagram of a pneumatic clamping assembly of a portable fuel cell fixture described in the present utility model;

[0028] Figure 4 It is an explosion schematic diagram of a clamping component of a portable fuel cell fixture described in the present utility model;

[0029] Figure 5 It is a sectional schematic diagram of a portable fuel cell fixture described in the present utility model.

[0030] In the figure: 1. Membrane electrode; 2. Cathode plate; 3. Cathode current collector plate; 4. Pneumatic clamping assembly; 4-1. Pressure gauge protective cover; 4-2. Reset positioning pin; 4-3. Pressure gauge; 4-4. Reset spring; 4-5. Pressure gauge locking bolt; 4-6. Guide cavity; 4-7. Speed control joint; 4-8. O-ring; 4-9. Limit ring; 4-10. Guide seat; 4-11. Reset positioning pin locking bolt; 4-12. Cathode electric heating rod; 4-13. Cathode buffer heat-conducting insulating gasket; 5. Anode plate; 6. Anode current collector plate; 7. Mechanical clamping assembly; 7-1. Adjusting bolt; 7-2. Locking nut; 7-3. Hoop; 7-4. Positioning pin; 7-5. Anode buffer heat-conducting insulating gasket; 7-6. Hoop fixing bolt; 7-7. End plate; 7-8. Hoop positioning pin; 7-9. Anode electric heating rod. Specific embodiments

[0031] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restrictive of the present utility model and its application or use. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments of the present utility model. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be clear that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model. The orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0036] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure is inverted, the device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used herein.

[0037] In addition, it should be noted that the use of terms such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present utility model.

[0038] Embodiment

[0039] As Figures 1 to 5 shown, the present utility model provides a portable fuel cell fixture, including: a membrane electrode 1, a cathode plate 2, a cathode current collector plate 3, a pneumatic clamping assembly 4, an anode plate 5, an anode current collector plate 6, and a mechanical clamping assembly 7;

[0040] First, adjust the hoop 7-3 in the mechanical clamping assembly 7 to 180°, and then successively install the anode current collector plate 6, the anode plate 5, the membrane electrode 1, the cathode plate 2, the cathode current collector plate 3, and the pneumatic clamping assembly 4 under the action of the positioning pin 7-4.

[0041] Secondly, adjust the hoop 7-3 in the mechanical clamping assembly 7 to 180°. At this time, the integral bolt 7-1 will be in a non-contact state with the guide cavity 4-6. Introduce air source into the speed regulating joint 4-7 in the pneumatic clamping assembly 4, and observe the reading of the pressure gauge 4-3 by adjusting the pressure at the air source until the pressure required for the experiment is reached. Since the inner diameter of the guide cavity 4-6 is a fixed value, the acting force on the surface of the membrane electrode can be clearly known. During the air intake process, the two adjusting bolts 7-1 will contact the guide cavity 4-6, and the relative position between the guide seat 4-10 and the guide cavity 4-6 reaches the action position.

[0042] Thirdly, conduct the test on the single cell of the fuel cell membrane electrode. After the test is completed, close the air source. After observing that the reading of the pressure gauge 4-3 is at normal pressure, the guide seat 4-10 and the guide cavity 4-6 return to the initial position under the action of the return spring 4-4.

[0043] Finally, adjust the hoop 7-3 in the mechanical clamping assembly 7 to 90°, remove the membrane electrode 1, and complete the test.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable fuel cell fixture, characterized in that Comprising: a membrane electrode (1), a cathode plate (2), a cathode current collector plate (3), a pneumatic clamping assembly (4), an anode plate (5), an anode current collector plate (6), and a mechanical clamping assembly (7); The membrane electrode (1) is placed between the cathode plate (2) and the anode plate (5). A cathode current collector plate (3) is installed on one side of the cathode plate (2), and a pneumatic clamping assembly (4) is installed outside the cathode current collector plate (3). An anode current collector plate (6) is installed on one side of the anode plate (5), and a mechanical clamping assembly (7) is installed outside the anode plate.

2. A portable fuel cell fixture according to claim 1, wherein, The pneumatic clamping assembly (4) consists of a pressure gauge protective cover (4-1), a reset positioning pin (4-2), a pressure gauge (4-3), a reset spring (4-4), a pressure gauge locking bolt (4-5), a guiding cavity (4-6), a speed regulating joint (4-7), an O-ring (4-8), a limiting ring (4-9), a guiding seat (4-10), a reset positioning pin locking bolt (4-11), a cathode electric heating rod (4-12), and a cathode buffer heat-conducting insulating gasket (4-13).

3. A portable fuel cell fixture according to claim 2, wherein, The guiding cavity (4-6) is equipped with a pressure gauge protective cover (4-1), a pressure gauge (4-3), and a speed regulating joint (4-7). The pressure gauge (4-3) and the speed regulating joint (4-7) have threads on their bodies and can be directly locked and fixed on the guiding cavity (4-6). The pressure gauge protective cover (4-1) is fixed to the guiding cavity (4-6) through the pressure gauge locking bolt (4-5).

4. A portable fuel cell fixture according to claim 2, characterized in that, Two counterbored holes are drilled in the diagonal direction of the guiding cavity (4-6). The reset spring (4-4) is installed in these counterbored holes. The reset positioning pin (4-2) sequentially passes through the reset spring (4-4), the guiding cavity (4-6), and the limiting ring (4-9), and the reset positioning pin (4-2) is fixed to the guiding seat (4-10) through the reset positioning pin locking bolt (4-11).

5. A portable fuel cell fixture according to claim 4, characterized in that, The cross-section of the guiding seat (4-10) is fixed, and its size should be larger than the active area of the membrane electrode, and the force of the gas source completely covers the active area of the membrane electrode.

6. A portable fuel cell fixture according to claim 1, wherein, The mechanical clamping assembly (7) consists of an adjusting bolt (7-1), a locking nut (7-2), a hoop (7-3), a positioning pin (7-4), an anode buffer heat-conducting insulating gasket (7-5), a hoop fixing bolt (7-6), an end plate (7-7), a hoop positioning pin (7-8), and an anode electric heating rod (7-9).

7. A portable fuel cell fixture according to claim 6, characterized in that, The surface of the end plate (7-7) is coated with glue and fits flatly with the anode buffer heat-conducting insulating gasket (7-5). The end plate (7-7) is provided with a deep hole for installing the anode electric heating rod (7-9). Two equidistant positioning pins (7-4) are installed in the deep holes drilled in the diagonal direction of the end plate (7-7). The hoop (7-3) is positioned with the end plate (7-7) through the hoop positioning pin (7-8). The hoop fixing bolt (7-6) passes through the hoop positioning pin (7-8) to lock the end plate (7-7). The hoop (7-3) can perform a relative movement of 90° to 180° relative to the end plate (7-7), and the hoop (7-3) is equipped with an adjusting bolt (7-1).

Images