CN110289433B

CN110289433B - Fuel cell clamp convenient to quickly disassemble and assemble

Info

Publication number: CN110289433B
Application number: CN201910539695.3A
Authority: CN
Inventors: 郑明刚; 廉钰弢; 朱万超
Original assignee: Shandong Jianzhu University
Current assignee: Shandong Jianzhu University
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-08-14
Anticipated expiration: 2039-06-21
Also published as: CN110289433A

Abstract

The invention discloses a fuel cell clamp convenient for quick disassembly and assembly, which comprises a membrane electrode, wherein a negative plate and an anode plate are respectively arranged at two sides of the membrane electrode, an air guide piston is arranged at one side of the negative plate far away from the membrane electrode, a cathode frame is arranged outside the air guide piston and the negative plate, an anode backing plate is arranged at one side of the anode plate far away from the membrane electrode, an anode frame is arranged outside the anode backing plate and the anode plate, a plurality of adjustable screws are arranged at one side of the cathode frame far away from the negative plate, the anode frame is hinged with a fixing frame for tightly pressing the cathode frame and the cathode frame, and the. The fixture solves the problems of assembly and clamping in the test and production processes of the fuel cell, and simultaneously improves the air tightness of the fixture.

Description

Fuel cell clamp convenient to quickly disassemble and assemble

Technical Field

The invention relates to the field of fuel cells, in particular to a fuel cell clamp convenient to rapidly disassemble and assemble.

Background

The fuel cell is a device for directly converting chemical energy of fuel into electric energy, has the advantages of high power generation efficiency, large specific energy, strong reliability, environmental protection, no pollution, fuel diversification and the like, becomes an important new energy development direction in the 21 st century, and is praised as a fourth generation power generation technology after water power, firepower and nuclear power. The proton exchange membrane fuel cell has the advantages of high power, simple structure, simple and convenient operation and the like, is one of the fuel cells with the widest adaptability, and is one of the first-choice energy sources of the electric automobile and the fixed power station which are generally accepted at present.

Because the quality of the membrane electrode and the flow channel directly determines the output performance of the fuel cell, the membrane electrode with different properties or the flow channel with different structures needs to be frequently replaced for repeated verification and comparison in test research, so the cell clamp needs to be frequently disassembled and assembled, the clamp used in the prior art is shown in fig. 1, the anode plate and the anode plate are clamped by an external frame, and then the external frame is fixed by a screw, and the clamp has the following defects:

1. the upper frame and the lower frame are locked by mainly adopting 4-8 bolts and nuts, so that the working efficiency is low, the force is not uniform during locking, the pretightening force is difficult to control, and the anode plate and the cathode plate are dislocated or poorly contacted, thereby affecting the performance of the battery and testing data;

2. the problem that the clamp is easy to loosen, especially loose in clamping is easy to occur in the long-time use process, the influence on the air tightness of the fuel cell is extremely serious, and then the performance of the cell is hindered, test data are interfered, and the use of the fuel cell is influenced. When the situation occurs, the clamping can only be realized by tightening the bolt and the nut, but the clamping effect of the connection mode with local stress is not ideal.

3. When different membrane electrodes or runner plates are replaced, all parts need to be disassembled in sequence, the operation process is complicated, and the assembly wastes time and labor;

4. the assembly consistency and the air tightness of the fuel cell are difficult to ensure, and the accuracy of single cell test data is seriously influenced.

Disclosure of Invention

In order to solve the problems, the invention provides the fuel cell clamp which is convenient to disassemble and assemble quickly, is quick and convenient to disassemble and replace, is simple to operate, solves the assembling and clamping problems in the test and production processes of the fuel cell, and simultaneously improves the air tightness of the clamp.

The utility model provides a fuel cell anchor clamps convenient to quick assembly disassembly, includes the membrane electrode, shown membrane electrode both sides are provided with negative plate and anode plate respectively, the one side that the membrane electrode was kept away from to the negative plate is provided with the air guide piston, air guide piston and negative plate outside are provided with the cathode frame, the one side that the membrane electrode was kept away from to the anode plate is provided with the anode backing plate, anode backing plate and anode plate outside are provided with the anode frame, the cathode frame is connected with anode frame contact, one side that the cathode plate was kept away from to the cathode frame is provided with a plurality of adjustable screws, the anode frame articulates there is the rotatory mount that compresses tightly cathode frame and cathode frame, the outside plane and the inboard plane.

Preferably, a sealing ring is arranged between the air guide piston and the cathode frame.

Preferably, the cathode frame is provided with a first step and a second step for limiting the sealing ring.

Preferably, the outer side plane of the second step is provided with a plurality of positioning holes, the first positioning hole is correspondingly connected with the anode frame, and the second positioning hole is connected with the anode backing plate in a positioning manner.

Preferably, the outer side plane of the second step is in contact connection with the cathode plate.

Preferably, the anode frame is provided with a first positioning rod matched with the first positioning hole, and the anode backing plate is provided with a second positioning rod matched with the second positioning hole.

Preferably, the anode frame is provided with a through step hole, and the anode backing plate and the anode plate are connected with a larger hole of the step hole in a matching manner.

Preferably, the air guide piston is provided with an air inlet hole and an air outlet hole which are communicated with the cathode plate.

Preferably, the anode backing plate and the anode frame are respectively provided with a positioning vent hole, and the anode frame is also provided with a sensor hole.

Preferably, a fixed shaft penetrates through the anode frame, a rotary fixing frame is hinged to the fixed shaft, and a locking handle used for increasing locking force is arranged between the rotary fixing frame and the anode frame.

The invention has the beneficial effects that:

(1) the invention adopts the mode that the fixing frames with two ends rotate around the fixed shaft to clamp the cathode frame and the anode frame, the locking handle assists the fixing frame to rotate and clamp, the bolt-nut connection mode of the traditional fuel cell clamp is abandoned, and the whole process from the clamp disassembly to the membrane electrode and the electrode plate replacement to the clamp re-clamping does not need any tool, thereby being convenient, rapid, time-saving and labor-saving, and greatly improving the working efficiency of the test and production of the fuel cell. The disassembly and the assembly are convenient and quick.

(2) For a cathode plate, a membrane electrode and an anode plate of a main research object of a fuel cell test, the rapid positioning and placing mode of matching the positioning hole and the positioning rod is adopted, and the connecting mode of bonding the cathode plate, the membrane electrode and the anode plate in the traditional fuel cell clamp is abandoned, so that the replacement time of the cathode plate, the membrane electrode and the anode plate during the test is greatly shortened, the experimental efficiency is improved, and the test accuracy is improved.

(3) The design of adjustable screw makes anchor clamps when appearing not hard up, can be according to not hard up difference of degree, and the cooperation mount is guaranteed to the independent adjusting screw in degree between the long-time use in-process frame of anchor clamps and is lasted closely laminating.

(4) The air guide piston is arranged in the cathode frame, the contact pressure between the piston and the cathode plate is changed through fine adjustment of the upper position and the lower position of the air guide piston, and then the clamping force among the cathode plate, the membrane electrode and the anode plate is adjusted, so that the air tightness is guaranteed on one hand, and on the other hand, the air guide piston is particularly convenient for specific relevant research and test aiming at the clamping force.

(5) Aiming at the problem that the anode plate is inconvenient to replace due to the fact that the anode plate is fixed by the existing clamp and the flexibility of the anode plate is sacrificed, the anode backing plate structure designed by the invention ensures the positioning accuracy and the gas tightness of the anode plate, and meanwhile, the anode plate can be replaced randomly, so that the anode backing plate structure has universality and is particularly convenient for specific relevant research and test aiming at the anode plate.

(6) The anode backing plate is designed into a structure capable of being finely adjusted up and down, and the direct extrusion of the anode plate by the pressure from the non-flow channel side of the anode plate is buffered.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a structural diagram of a conventional fuel cell in the background art of the present invention;

FIG. 2 is a top view of a fuel cell of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a perspective view of a fuel cell according to the present invention;

FIG. 6 is a perspective view of a second fuel cell in accordance with the present invention;

FIG. 7 is an exploded view of an anode frame layout structure;

in the figure: 1. the air guide device comprises an air guide piston, 2, an adjustable nut, 3, a sealing ring, 4, a cathode frame, 5, a cathode plate, 6, a membrane electrode, 7, an anode plate, 8, an anode backing plate, 8-a, a second positioning rod, 9, an anode frame, 9-a, a first positioning rod, 9-b, a positioning ventilation table, 9-c, a first reserved hole, 9-d, a second reserved hole, 10, a rotary fixing frame, 11, a locking handle, 12 and a fixing shaft.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

As shown in fig. 2 to 7, the gas guide piston 1 can move downward along the circular space inside the cathode frame 4 under the action of external force, and the cathode plate 5 is pressed against the membrane electrode 6. In order to improve the sealing performance between the air guide piston 1 and the cathode frame 4, a sealing ring 3 is arranged between the first step and the second step of the cathode frame 4, the air guide piston is arranged in the sealing ring, and the sealing ring is a rubber sealing ring. The sealing ring 3 is used on the one hand to limit the radial movement of the air guide piston 1 and on the other hand to ensure the air tightness between the air guide piston 1 and the cathode plate 5. The non-flow channel surface of the cathode plate 5 is tightly attached to the lower end surface of the air guide piston 1; the cathode gas enters the cathode plate flow channel through the air inlet hole on the upper end surface of the air guide piston 1 and is discharged through the air outlet hole; two circular arc shaped handles around the cathode frame 4 facilitate gripping of the fuel cell.

The anode plate 7 and the anode backing plate 8 are stacked in a larger hole of the step hole of the anode frame 9; the anode backing plate 8 is matched with the positioning ventilation table 9-b through the positioning ventilation hole on the lower surface, so that the purpose that the anode backing plate is positioned on the anode frame is achieved on one hand, and on the other hand, anode gas is ensured to reach the anode backing plate 8 through the positioning ventilation hole at the bottom of the anode frame 9 and further reach the anode plate flow channel through the ventilation hole on the anode backing plate; the anode frame is matched with the first positioning hole on the cathode frame 4 through the first positioning rod 9-a, so that the position positioning of the cathode frame 4 and the position positioning of the anode frame 9 are ensured; four corners of the membrane electrode 6 and the anode plate 7 are provided with through holes, when the fixture is used, the through holes of the membrane electrode 6 and the anode plate 7 penetrate through the second positioning rod 8-a, so that the positions of the membrane electrode 6, the anode plate 7 and the anode base plate 8 are fixed, and smooth air guiding is ensured; the first reserved hole 9-c and the second reserved hole 9-d are used as reserved sensor holes for mounting a temperature sensor and a humidity sensor.

The fixed shaft 12 passes through the rotary fixing frame 10 and the locking handle 11 to form a revolute pair; the rotary fixing frame can rotate around the fixed shaft, the adjustable screw 2 is in threaded connection with the cathode frame, the inner side of the rotary fixing frame is tightly attached to the upper end of the adjustable screw 2, and the rotary fixing frame 10 is tightly pressed by adjusting the height of the adjustable screw 2 on the cathode frame 4 to play a role in clamping the cathode frame and the anode frame; one side surface of the locking handle 11 is tightly attached to one side surface of the inner side of the fixing frame, and the other side surface is tightly attached to the frame and used for assisting the fixing frame to lock the cathode frame and the anode frame.

When the device is disassembled, the rotary fixing frame 10 and the locking handle 11 rotate around the fixed shaft 12, so that the inner side surface of the rotary fixing frame 10 is separated from the cathode frame 4, the cathode frame can be separated from the anode frame, and the cathode plate, the membrane electrode and the anode plate can be replaced. After the replacement, the first positioning hole of the cathode frame is matched with the first positioning rod of the anode frame, and then the rotary fixing frame 10 and the locking handle 11 rotate around the fixing shaft 12 in the opposite direction, so that the cathode frame and the anode frame can be locked. After being disassembled and assembled for many times, the rotary fixing frame 10 is loosened, the inner side surface of the rotary fixing frame is not tightly matched with the outer side surface of the cathode frame, and the adjustable screw 2 is rotated at the moment, so that the height of the adjustable screw from the cathode frame is increased, and the clamping effect can be achieved.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fuel cell clamp convenient for quick assembly and disassembly is characterized by comprising a membrane electrode (6), a negative plate (5) and an anode plate (7) are respectively arranged at two sides of the membrane electrode, an air guide piston (1) is arranged at one side of the negative plate far away from the membrane electrode, a cathode frame (4) is arranged outside the air guide piston and the cathode plate, an anode backing plate (8) is arranged on one side of the anode plate away from the membrane electrode, an anode frame (9) is arranged outside the anode backing plate and the anode plate, the cathode frame is in contact connection with the anode frame, a plurality of adjustable screws (2) are arranged on one side of the cathode frame far away from the cathode plate, the anode frame is hinged with a fixing frame (10) which tightly presses the anode frame and the cathode frame, after the fixing frame is clamped with the cathode plate, the outer side plane of the adjustable screw is contacted with the inner side plane of the fixing frame;

a sealing ring (3) is arranged between the air guide piston and the cathode frame;

the cathode frame is provided with a first step and a second step for limiting the sealing ring;

a plurality of positioning holes are formed in the outer side plane of the second step, the first positioning holes are correspondingly connected with the anode frame, the anode frame is matched with the first positioning holes in the cathode frame (4) through first positioning rods (9-a), and the second positioning holes are connected with the anode base plate in a positioning mode; a through hole is drilled on the anode plate (7) and is matched with a second positioning rod (8-a) on the anode backing plate 8;

the membrane electrode (6) is provided with a through hole, and the through hole of the membrane electrode penetrates through the second positioning rod (8-a);

the air guide piston is provided with an air inlet and an air outlet which are communicated with the cathode plate;

the anode base plate and the anode frame are respectively provided with a positioning vent hole, and the anode frame is also provided with a sensor hole.

2. The fuel cell clamp facilitating quick assembly and disassembly as recited in claim 1, wherein the second step outer side plane is in contact connection with the cathode plate.

3. The fuel cell fixture of claim 1, wherein the anode frame is provided with a through stepped hole, and the anode backing plate and the anode plate are connected to the larger hole of the stepped hole in a matching manner.

4. The fuel cell clamp convenient for quick assembly and disassembly as recited in claim 1, wherein a fixed shaft (12) is arranged in the anode frame in a penetrating way, the fixed shaft is hinged with a fixed frame (10), and a locking handle (11) used for increasing locking force is arranged between the fixed frame and the anode frame.