Embedded heating single cell test tool for fuel cell and electrolytic cell

Abstract

The utility model relates to the technical field of proton exchange membrane fuel cells and electrolytic cells, and provides an embedded heating single cell test tool for a fuel cell and an electrolytic cell. The tool comprises a single cell test tool main body for a fuel cell and an electrolytic tank, an end plate, a collector plate and a polar plate, the inner side of the single battery test tool main body is connected with an end plate, the end plate is connected with a collector plate, and the collector plate is connected with a polar plate; the end plates are cathode end plates and anode end plates embedded with heating sheets; the collector plate is a cathode collector plate or an anode collector plate; the polar plate is a cathode polar plate or an anode polar plate; and the heating sheet in the end plate is connected with the control unit. According to the utility model, the problems that the temperature of reactants entering the battery is not uniform and the temperature is greatly different from the actually required temperature in the single battery testing and verifying process are solved, the temperature control of the device is more accurate, and the required device is simple, so that the testing and verifying results are more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of proton exchange membrane fuel cells and electrolytic cells, and relates to a single cell testing tool, in particular to a single cell testing tool with built-in heating for fuel cells and electrolytic cells. Background Art

[0002] When verifying the early design and selection of catalysts, membrane electrodes, etc., fuel cells and electrolyzers need to be tested using single-cell tooling. During the test, the optimal operating temperature range of the proton exchange membrane is 65-80°C, but due to the lack of self-heating capacity of the single cell, it needs to be heated and controlled externally. At present, the external temperature control method generally adopts the method of external heating of the reactants, such as preheating the reactants in a water bath, and then circulating them into the battery through the pipeline, but the structure of this heating method is relatively complex. In addition, after the reactants are heated, they are passed into the single-cell tooling through a conduit for reaction. The conduit is exposed to the air, which will cause the temperature of the reactants to change and be uneven, making it impossible to use a single-cell tooling to accurately characterize the reaction performance, resulting in inaccurate experimental results. Therefore, it is also necessary to install an insulation device on the circulation pipeline to ensure that the temperature of the reactants entering the single cell is consistent and uniform with the temperature of the water bath.

[0003] In view of the above technical defects, the utility model designs a single-cell test tool with built-in heating for fuel cells and electrolytic cells to solve the above problems. Utility Model Content

[0004] The utility model provides a single-cell test fixture device with built-in heating for fuel cells and electrolytic cells, which solves the problem that in proton exchange membrane fuel cells and electrolytic cell single-cell test fixtures, the complexity of the external heating system and the non-uniformity of the heating temperature lead to inaccurate test verification results, and the single-cell verification work on the catalyst, membrane electrode and plate, etc. cannot be effectively supported.

[0005] In order to solve the above problems, the utility model provides a single cell testing tool device with built-in heating for fuel cells and electrolytic cells.

[0006] A single-cell test fixture with built-in heating for fuel cells and electrolytic cells, comprising a single-cell test fixture body, an end plate, a current collecting plate and a polar plate for fuel cells and electrolytic cells; the inner side of the single-cell test fixture body is connected to the end plate, the end plate is connected to the current collecting plate, and the current collecting plate is connected to the polar plate;

[0007] Further preferably, the end plate is a cathode end plate and an anode end plate with embedded heating plates; the current collecting plate is a cathode current collecting plate or an anode current collecting plate; the plate is a cathode plate or an anode plate; the heating plate inside the end plate is connected to the control unit.

[0008] Further preferably, a through hole is provided on the end plate.

[0009] Further preferably, the cathode end plate and the anode end plate of the embedded heating plate are provided with a groove near the inner side of the current collector, and a lead groove is provided on one side of the groove; the groove is used to place the heating plate, and the lead connected to the heating plate is placed in the lead groove. Further preferably, the anode and cathode end plates are placed horizontally with the cathode and cathode plates, and the contact layer adopts an open-hole insulating gasket.

[0010] Further preferably, the heating plate placed in the end plate groove has a heating function and a built-in temperature probe, and is connected to an external temperature control unit via a lead wire.

[0011] Further preferably, the cathode end plate and the anode end plate of the embedded heating plate are arranged horizontally opposite to the current collecting plate, and the contact layer is arranged as an open-hole insulating gasket.

[0012] Further preferably, the heating plate is fixed to the inner side of the end plate groove by pressure provided by an external screw.

[0013] Further preferably, the end plate has an embedded heating plate in close contact with the electrode plate.

[0014] In the utility model, the end plate with heating function heats and controls the temperature of the reaction gas or liquid in the electrode plate and the diffusion layer by means of an embedded heating sheet.

[0015] Compared with the related art, the utility model has the following beneficial effects:

[0016] 1. The single-cell test fixture device with built-in heating provided by the utility model embeds a heating plate inside the inner side of the anode and cathode plates, cooperates with an external control unit to control the heating temperature of the heating plate, and regulates the reaction temperature in the test fixture.

[0017] 2. The single-cell test fixture device with built-in heating provided by the utility model tightly connects the built-in heating plate with the current collecting plate and the electrode plate through the pressure provided by the screw. The heating source is closer to the reaction zone, the reaction temperature can be controlled more accurately, and the energy loss can be reduced.

[0018] 3. The single-cell test fixture device with built-in heating provided by the utility model improves the integration level of the test device and simplifies the external auxiliary device by embedding the heating source into the anode and cathode extreme plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is the main structure diagram of the utility model;

[0021] Figure 3 This is a structural diagram of the heating unit of the present utility model.

[0022] The components in the figure are as follows: main body 1, control unit 2, silicone gasket 3, current collecting plate 4, electrode plate 5, end plate 6, heating plate 7. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments; based on the embodiments in 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. Therefore, the drawings and descriptions are considered to be illustrative in nature and not restrictive.

[0024] Example 1

[0025] like Figures 1 to 3 As shown, a single-cell test fixture device with built-in heating for fuel cells and electrolytic cells includes a single-cell test fixture body 1 and an external control unit 2, wherein the external control unit is a temperature controller, and the single-cell test fixture body 1 is internally provided with an end plate 6, a current collecting plate 4, and a plate 5, as shown in FIG. Figure 2 As shown, from left to right, they are the anode end plate of the embedded heating plate, the anode current collecting plate, the anode plate, the cathode plate, the cathode current collecting plate, and the cathode end plate of the embedded heating plate. Figure 3 As shown, the end plate 6 and the heating plate 7 form the cathode end plate and the anode end plate of the embedded heating plate. The heating temperature is set to 50-90°C by the external control unit 2, and the heating plate 7 generates heat, which is transferred to the membrane electrode side reaction zone through the current collecting plate 4 and the electrode plate 5 for heating, and the temperature is precisely controlled by the integrated temperature probe in the heating plate 7. The heating plate 7 is tightly embedded in the end plate 3 and fits tightly with the current collecting plate 4.

[0026] In this embodiment, a through hole is provided on the end plate, and a groove is provided on the cathode end plate and the anode end plate of the embedded heating plate near the inner side of the current collector, and a lead groove is provided on one side of the groove; the groove is used to place the heating plate, and the lead connected to the heating plate is placed in the lead groove. In this embodiment, the heating plate has a heating function and a built-in temperature probe.

[0027] Based on the structure described above, the heating plate 7 is embedded in the current collecting plate and connected to the external control unit through a lead wire. The current collecting plate and the end plate are tightly fitted together through an insulating gasket 3 with openings. The insulating gasket 3 can be a silicone gasket.

[0028] Example 2

[0029] like Figures 1 to 3As shown, a single-cell test fixture device with built-in heating for fuel cells and electrolytic cells includes a single-cell test fixture body 1 and an external control unit 2. The single-cell test fixture body 1 is internally provided with an end plate 6, an anode and cathode current collecting plates 4, and an anode and cathode plates 5. Figure 2 As shown, from left to right, they are the anode end plate of the embedded heating plate, the anode current collecting plate, the anode plate, the cathode plate, the cathode current collecting plate, and the cathode end plate of the embedded heating plate. Figure 3 As shown, the end plate 6 and the heating plate 7 form the cathode end plate and the anode end plate of the embedded heating plate. Before the experiment, the membrane electrode, the anode and cathode plates, the cathode and cathode current collecting plates and the cathode and cathode end plates with embedded heating plates are fixed and fastened together by screws. The heating plate is close to the metal current collecting plate, the metal current collecting plate is close to the plate, and the plate is close to the membrane electrode. The current collecting plate and the plate have excellent thermal conductivity, which can transfer the heat generated by the heating plate to the membrane electrode to promote the catalytic reaction. The heating operation of the heating plate is set by the temperature controller, and the actual temperature is fed back by the built-in temperature probe, so that the temperature of the test tooling is stabilized at the set temperature, ensuring that the membrane electrode operates stably at the set temperature point.

[0030] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single cell test fixture with built-in heating for fuel cells and electrolytic cells, characterized in that: The single cell test fixture comprises a main body (1), an end plate (6), a current collecting plate and a polar plate for a fuel cell and an electrolytic cell; the inner side of the main body (1) of the single cell test fixture is connected to the end plate (6), the end plate (6) is connected to the current collecting plate, and the current collecting plate is connected to the polar plate; The end plate (6) is a cathode end plate and an anode end plate of an embedded heating plate; the current collecting plate is a cathode current collecting plate or an anode current collecting plate; the electrode plate is a cathode electrode plate or an anode electrode plate; The heating plate (7) inside the end plate (6) is connected to the control unit (2).

2. The single cell test fixture with built-in heating for fuel cells and electrolytic cells according to claim 1, characterized in that: The end plate is provided with a through hole.

3. The single cell test fixture with built-in heating for fuel cells and electrolytic cells according to claim 1, characterized in that: The cathode end plate and the anode end plate of the embedded heating plate are provided with grooves near the inner side of the current collector, and a lead groove is provided on one side of the groove; the groove is used to place the heating plate, and the lead connected to the heating plate is placed in the lead groove.

4. The single cell test fixture with built-in heating for fuel cells and electrolytic cells according to claim 2, characterized in that: The heating plate is connected to an external control unit via a lead wire.

5. The single cell test fixture with built-in heating for fuel cells and electrolytic cells according to claim 1, characterized in that: The cathode end plate and the anode end plate of the embedded heating plate are arranged horizontally opposite to the current collecting plate, and the contact layer is arranged as an open-hole insulating gasket (3).

6. The single cell test fixture with built-in heating for fuel cells and electrolytic cells according to claim 5, characterized in that: The end plate, the current collecting plate and the insulating gasket are connected and fixed by screws.

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