CN114879051A

CN114879051A - Fuel cell test equipment

Info

Publication number: CN114879051A
Application number: CN202210389899.5A
Authority: CN
Inventors: 汪宁航
Original assignee: Ningbo Haorui Automation Technology Co ltd
Current assignee: Ningbo Haorui Automation Technology Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-08-09

Abstract

A fuel cell testing apparatus of the present invention includes a frame having an upper portion, a middle portion, and a lower portion; a pressurizing mechanism which is arranged at the upper part of the frame and is adjustable; the protective cover movable sliding mechanism is arranged in the middle of the rack through the working panel; a movable heating protective cover which is movably arranged on the protective cover movable sliding mechanism and can slide left and right on the upper part of the protective cover movable sliding mechanism; the heating test assembly is arranged in the middle and is partially positioned in the movable heating protection cover; the heating test assembly can be provided with a fuel cell which is covered by a movable heating protective cover and then is subjected to a heating test; firstly, the X-axis servo electric shock driving sliding table and the Y-axis servo electric cylinder driving sliding table are adopted for controlling so that the stroke is more accurate, and the control can be realized through software control; the movable heating protective cover can be driven to move left and right by adopting a connecting rod structure.

Description

Fuel cell test equipment

Technical Field

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

Background

A fuel cell is a chemical device that directly converts chemical energy possessed by a fuel into electric energy, and is a fourth power generation technology following hydroelectric power generation, thermal power generation, and atomic power generation. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; in addition, fuel gas and oxygen are used as power generation sources for the fuel cell, and no mechanical transmission part is arranged, so that no sound pollution is caused, and the emission of harmful gas is extremely low.

Conventional pressure device pressurizes pressure sensor, adopts manual rocker to wave the pressurization, because manual rocker pressurization can't accurate control, does not operate well again, leads to the error great.

Disclosure of Invention

Technical problem to be solved

In order to overcome the defects of the prior art, the fuel cell testing equipment is provided, the conventional pressurizing device is solved, the pressure sensor is pressurized, the manual rocker is adopted to shake and pressurize, and the problem of large error caused by the fact that the manual rocker cannot be accurately controlled and is not easy to operate is solved

(II) technical scheme

The invention relates to a fuel cell testing device, which comprises a frame, a testing device and a testing device, wherein the frame is provided with an upper part, a middle part and a lower part; a pressurizing mechanism which is arranged at the upper part of the frame and is adjustable; the protective cover movable sliding mechanism is arranged in the middle of the rack through the working panel; a movable heating protective cover which is movably arranged on the protective cover movable sliding mechanism and can slide left and right on the upper part of the protective cover movable sliding mechanism; the heating test assembly is arranged in the middle and is partially positioned in the movable heating protection cover; the heating test assembly may be configured with the fuel cell covered by a removable heating shield and then subjected to a heating test.

Preferably, the movable heating protective cover comprises a group of movable heating protective cover components which are opposite left and right; the group of movable heating protective cover assemblies can be in two states of left-right separation/left-right closing on the protective cover movable sliding mechanism, namely, a door closing state/a door opening state is realized.

Preferably, the movable heating protection cover assembly comprises a supporting plate for the movable heating protection cover, a heating body with a heating cavity, a heating frame arranged around the outside of the heating body, and a door body arranged at the heating frame;

a plurality of sliding blocks are fixedly arranged below the supporting plate for the movable heating protective cover;

the upper part of the heating body is provided with a heating and pressurizing channel for the ceramic pressurizing rod to pass through; heating channels which are transversely embedded and arranged are arranged in the heating body, and three surfaces of the heating cavity are provided with three groups of heating channels in a surrounding mode.

Preferably, the pressurizing mechanism comprises a pressurizing fixed plate fixedly arranged at the upper part of the rack, a screw rod sliding table module transversely fixed on the pressurizing fixed plate, an X-axis servo electric shock driving sliding table fixedly arranged on the pressurizing fixed plate and arranged in parallel with the screw rod sliding table module, a Y-axis servo electric cylinder driving sliding table, a pressurizing sliding plate slidably arranged on the screw rod sliding table module, a pressurizing support plate positioned right above the pressurizing sliding plate, a first air cylinder fixed plate positioned right above the pressurizing support plate, a pressurizing air cylinder, a ceramic pressurizing assembly and a second air cylinder fixed plate; the pressurizing sliding plate and the pressurizing supporting plate are supported and fixed through a plurality of vertical rods, the pressurizing supporting plate and the first air cylinder fixing plate are supported and fixed through a plurality of vertical rods, the first air cylinder fixing plate and the second air cylinder fixing plate are movably fixed through a plurality of vertical rods, and the second air cylinder fixing plate can slide up and down under the driving of a Y-axis servo electric cylinder driving sliding table; the lower part of the second cylinder fixing plate is fixedly arranged on the movable column and is matched and fixed with the pressurizing support plate, and the ceramic pressurizing assembly is arranged below the pressurizing support plate and can perform pressurizing operation under the driving of the Y-axis servo electric cylinder driving sliding table.

Preferably, the ceramic pressurizing assembly passes through the heating pressurizing channel from top to bottom to the heating cavity;

the ceramic pressurizing assembly comprises a pressurizing connecting plate and a ceramic pressurizing rod arranged at the pressurizing connecting plate; the ceramic pressure rod extends downward to the heating cavity and is positioned above the heating test assembly to be accessible.

Preferably, a pressure sensor is arranged at the matching part of the movable column and the pressurizing support plate;

the driving end of the X-axis driving sliding table can drive the pressurizing sliding plate to horizontally slide on the lead screw sliding table module through the connecting mechanism.

Preferably, the device also comprises a limiting component fixedly arranged on the pressurizing fixing plate; the limiting assembly comprises a group of limiting parts, and the group of limiting parts are arranged at the tail end of the horizontal position of the screw rod sliding table module and are provided with a group of sensors.

Preferably, the protective cover movable sliding mechanism comprises a slide rail arranged on the working panel and a slide block arranged below the movable heating protective cover, wherein the number of the slide rail and the slide block is more than one group; the movable heating protective cover moves horizontally on the protective cover movable sliding mechanism.

Preferably, the device further comprises a link mechanism; the connecting rod mechanism comprises a connecting rod driving cylinder and a connecting rod which are fixedly arranged on the frame; the connecting rod mechanism drives the air cylinder through the connecting rod to pull the connecting rod so as to drive the heating test assembly to slide left and right on the protective cover movable sliding mechanism, and sliding operation is realized.

(III) advantageous effects

Firstly, the X-axis servo electric shock driving sliding table and the Y-axis servo electric cylinder driving sliding table are adopted for controlling so that the stroke is more accurate, and the control can be realized through software control; the movable heating protective cover can be driven to move left and right by adopting a connecting rod structure.

Drawings

FIG. 1 is a schematic front view of a fuel cell testing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a fuel cell testing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a pressurizing device of a fuel cell testing apparatus according to the present invention;

FIG. 4 is a schematic front view of a pressurizing device of a fuel cell testing apparatus according to the present invention;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 1;

fig. 6 is a partially enlarged structural diagram of the structure a in the figure.

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 description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the normal use of a product.

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 drawings of the embodiment of the invention, a coordinate axis Z is arranged, wherein the positive direction of the Z axis represents the upper direction, and the negative direction of the Z axis represents the lower direction.

Reference is made to fig. 1, 2, 3, 4, 5 and 6; in a combined description, fig. 1 is a schematic front view of a fuel cell testing apparatus according to an embodiment of the present invention; FIG. 2 is a schematic front view of a fuel cell testing apparatus according to an embodiment of the present invention; FIG. 3 is a schematic perspective view of a pressurizing device of a fuel cell testing apparatus according to the present invention; FIG. 4 is a schematic front view of a pressurizing device of a fuel cell testing apparatus according to the present invention; FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 1; fig. 6 is a partially enlarged structural diagram of the structure a in the figure.

The fuel cell testing equipment is mainly applied to fuel cell testing, and has the advantages that the fuel cell is pressurized and fixed, the fuel cell is heated and tested in the heating protective cover 4 through the heating testing component 5, particularly, the pressurizing mechanism 2 which is accurately pressurized is adopted for pressurizing, the software control is more accurate, and the operation is more convenient;

reference is made to fig. 1, 2, 3, 4, 5 and 6; the invention relates to a fuel cell testing device, which comprises a frame 1, wherein the frame 1 is integrally in a frame shape and is provided with an upper part 11, a middle part 12 and a lower part 13, wherein the upper part 11 is used for placing a fixed pressurizing mechanism 2, the middle part is used for preventing a heating protection cover 4 from being fixed, the lower part 13 can be used for placing a part of a heating testing component 5, the upper part of the heating testing component 4 is arranged in the middle part 12 and is also arranged in a heating cavity 420 of the heating protection cover 4; the pressurizing mechanism 2 is positioned at the upper part 11 of the frame 1 and is designed from top to bottom, penetrates through the heating test assembly 5 through the ceramic pressurizing assembly 28 and can perform pressurizing and fixing operation on the fuel cell on the heating test assembly 5; the movable heating protective cover 4 is positioned in the middle part 12 of the frame 1 and can horizontally move in the middle part 12 through the protective cover movable sliding mechanism 3, specifically, the movable heating protective cover 4 comprises a left movable heating protective cover component 40 and a right movable heating protective cover component 40, the two movable heating protective cover components 40 are opposite left and right, and can be separated left and right or closed left and right, namely, a door closing state or a door opening state is realized; the heating test assembly 5 is partially positioned in the middle part 12 of the machine frame 1 and partially positioned in the lower part 13 of the machine frame 1; specifically, the main body of the heating test assembly 5 is located in the heating cavity 420 of the heating protection cover 4, the link mechanism 6, one end of the link mechanism 6 is fixed on the side surface of the rack 1, the other end of the link mechanism 6 is fixed on the side surface of the heating test assembly 5, and the link mechanism 6 drives the connecting rod 61 through the connecting rod driving cylinder 60 to pull the connecting rod 61 so as to drive the heating test assembly 5 to slide left and right on the protection cover sliding mechanism 3, thereby realizing the sliding operation;

reference is made to fig. 1, 2, 3, 4, 5 and 6; in this embodiment, the heating test assembly 5 may be configured with a fuel cell covered by a removable heating protective cover 4 and then subjected to a heating test.

Reference is made to fig. 1, 2, 3, 4, 5 and 6; the movable heating protection cover assembly 40 includes a support plate 41 for the movable heating protection cover, a heating body 42 having a heating cavity 420, a heating frame 43 surrounding the heating body 42, and a door 44 disposed at the heating frame 43, wherein the heating body 32 has a concave heating cavity 420 therein, the door 44 can be made of a transparent material and can be used for observation by a worker, the heating body 42 is further provided with a thermocouple 45 penetrating from the outside, the thermocouple 45 penetrates through the heating frame 43 and the heating body 42 from the outside to the inside and extends into the heating cavity 420, the number of the thermocouples 45 can be plural, in this embodiment, the number of the thermocouples 45 is three; a plurality of sliding blocks 32 are fixedly arranged below the supporting plate 41 for the movable heating protective cover, and the movable heating protective cover assembly 40 can horizontally slide on the sliding rails 31 under the sliding of the sliding blocks 32, so that the daily test requirement is realized; the upper part of the heating body 42 is provided with a heating and pressurizing channel 421 for the ceramic pressurizing rod 280 to pass through, and the heating and pressurizing channel 421 is vertically arranged, so that the ceramic pressurizing rod 280 can pass through the heating and pressurizing channel 421 from top to bottom to the heating cavity 420 for pressurizing and fixing the fuel cell; the concave heating cavity 420 has three surfaces, each of the three surfaces has a heating channel 422, and a resistance wire (not shown) is arranged in the heating channel 422, and the heating channel 422 is heated by the resistance wire (not shown), wherein the number of the heating channels 422 is a plurality, so that heat can be reflected to the fuel cell for further heating treatment;

specifically, the thermocouple 45 may detect the temperature in the heating chamber 420 for real-time observation.

Reference is made to fig. 1, 2, 3, 4, 5 and 6; the above-mentioned pressurizing structure 2 is usually fixedly disposed on the frame 1, and its position is generally located at the upper portion 11, but it may be placed at the left and right sides of the frame 1 according to actual requirements, and the like, and in this embodiment, the above-mentioned pressurizing structure 2 is placed at the upper position of the frame 1; the pressurizing mechanism 2 comprises a pressurizing fixing plate 20 fixedly arranged at the upper part of the frame, and the pressurizing fixing plate 20 is mainly a fixing position for ensuring that the pressurizing mechanism 2 can have a stable and firm processing position; the screw rod sliding table module 21 is transversely fixed on the pressurizing fixing plate 20, the screw rod sliding table module 21 comprises a sliding rail and a sliding block combination, and the sliding block can slide on the sliding rail; the X-axis servo electric shock driving sliding table 22 is fixedly arranged on the pressurizing fixing plate 20 and is parallel to the lead screw sliding table module 21, the X-axis servo electric shock driving sliding table 22 is positioned on the front side of the lead screw sliding table module 21 and is parallel to the lead screw sliding table module, and reliable displacement sliding and machining and testing accuracy can be guaranteed by adopting the X-axis servo electric shock driving sliding table 22; a Y-axis servo electric cylinder driving sliding table 23 fixedly arranged on the pressurizing fixing plate 20, wherein the Y-axis servo electric cylinder driving sliding table 23 is perpendicular to the pressurizing fixing plate 20, the upper part of the Y-axis servo electric cylinder driving sliding table is a driving end, and the lower part of the Y-axis servo electric cylinder driving sliding table is a fixed end; the pressurizing sliding plate 24 is slidably arranged on the lead screw sliding table module 21, a sliding block is arranged below the pressurizing sliding plate 21, the sliding block can horizontally slide on a sliding rail of the lead screw sliding table module 21, and the design is designed for testing work requirements, wherein a connecting mechanism 220 is arranged at the driving end of the X-axis servo electric shock driving sliding table 22, one end of the connecting mechanism 220 is fixed at the driving end of the X-axis servo electric shock driving sliding table 22, and the other end of the connecting mechanism 220 is fixedly arranged on the pressurizing sliding plate 24, so that the pressurizing sliding plate 24 can be driven to horizontally move on the lead screw sliding table module 21 by the X-axis servo electric shock driving sliding table 22; a pressure support plate 25 located right above the pressure sliding plate 24, the pressure sliding plate 24 and the pressure support plate 25 are supported and fixed by a plurality of vertical rods, and the distance between the pressure sliding plate 24 and the pressure support plate 25 is the height of the vertical rods; a first pressurized cylinder fixing plate 26 positioned right above the pressurized support plate 25, wherein the pressurized support plate 25 and the first pressurized cylinder fixing plate 26 are supported and fixed through a plurality of vertical rods, and the distance between the pressurized support plate 25 and the first pressurized cylinder fixing plate 26 is the height of the vertical rods; the pressurizing cylinder 27 is fixedly arranged at the first pressurizing cylinder fixing plate 26 from top to bottom, the driving end of the pressurizing cylinder 27 is designed downwards, and the driving end of the pressurizing cylinder 27 penetrates through the first pressurizing cylinder fixing plate 26 and extends downwards to a position between the pressurizing sliding plate 24 and the pressurizing supporting plate 25, specifically, the driving end of the pressurizing cylinder 27 is provided with a pressurizing limit connecting plate 270, the position of the pressurizing limit connecting plate 270 is positioned between the pressurizing sliding plate 24 and the pressurizing supporting plate 25, the pressurizing supporting plate 25 is the ascending limit position of the pressurizing supporting plate, and the pressurizing sliding plate 24 is the descending limit position of the pressurizing sliding plate; the ceramic pressing assembly 28 is disposed right below the pressing fixing plate 20, the ceramic pressing assembly 28 includes a pressing connecting plate 281, and a ceramic pressing rod 280 disposed at the pressing connecting plate 281, the ceramic pressing rod 280 is disposed below the pressing connecting plate 281 and fixedly connected to the pressing connecting plate 281, the left and right ends of the pressing connecting plate 281 extend upward to the pressing supporting plate 25 through a column and are fixedly connected to the pressing supporting plate 25, and the pressing supporting plate 25 can move along with the ceramic pressing assembly when moving downward to complete the pressing operation; specifically, the ceramic pressurizing assembly 28 is disposed below the pressurizing support plate 25, so that the pressurizing operation can be performed under the driving of the Y-axis servo electric cylinder driving sliding table 23.

Reference is made to fig. 1, 2, 3, 4, 5 and 6; the second cylinder fixing plate 29 is located right above the first cylinder fixing plate 26 and fixed by a movable vertical rod, a movable column 290 is further fixedly disposed at the lower end of the second cylinder fixing plate 29, and the end of the movable column 290 is connected with a pressure sensor 250 and disposed on the pressing support plate 25, in this embodiment, the driving end of the Y-axis servo electric cylinder driving sliding table 23 can drive the second cylinder fixing plate 29 matched therewith to perform downward operation, and simultaneously drive the movable column 290 matched therewith to perform downward operation, and simultaneously drive the pressing support plate 25 to perform downward operation, and simultaneously, the ceramic pressing assembly 28 can also move downward along with the downward movement of the pressing support plate 25, and a continuous movement operation is performed, so that the ceramic pressing assembly 28 performs downward pressing operation.

Reference is made to fig. 1, 2, 3, 4, 5 and 6; the pressure fixing plate 20 is also provided with a limiting component 7; the limiting assembly 7 includes a set of limiting members 71, the set of limiting members 71 is disposed at the end of the horizontal position of the screw rod sliding table module 21 and has a set of sensors 72, and the set of sensors 72 can transmit signals to the controller for alarm processing.

Reference is made to fig. 1, 2, 3, 4, 5 and 6; the heating test assembly 5 can be configured with a fuel cell to be tested, the fuel cell is fixed in position in the first step through the test die 52, and after the fuel cell is fixed, the fuel cell is pressed through the ceramic pressurizing rod 280 above the fuel cell for further fixing, so that the stability during testing is ensured; the support seat 51 for heating test is fixedly arranged on the support plate 41 for movable heating protection cover, the insulating gas pipeline 53 penetrates through the support seat 51 for heating test from bottom to top and is arranged around the mold 52 for heating test, and the insulating gas pipeline 53 is communicated with external equipment to convey insulating gas, so that the temperature of the heating cavity 420 can be reasonably maintained during heating test, and daily heating test is facilitated.

The working principle is as follows:

reference is made to fig. 1, 2, 3, 4, 5 and 6; the fuel cell to be tested is placed in the mold 52 for testing, the slide table 23 is driven by the Y-axis servo electric cylinder in the pressurizing structure 2 to drive the ceramic pressurizing rod 280 to move downwards, the fuel cell to be tested is further fixed in the mold 52 for testing, then the movable heating protection cover assemblies 40 on the two sides are drawn inwards to be in a closed state from left to right, so that the heating cavity 420 formed by the movable heating protection cover assemblies 40 on the two sides is kept, at the moment, the resistance wire in the heating body 42 is electrified and heated, the heating cavity 420 is detected by the thermocouple 45, intermittent control is carried out after the predicted temperature is reached, meanwhile, the heat-insulating gas pipeline 53 is conveyed in, so that the temperature of the heating cavity 420 is kept, the fuel cell can be taken down after the heating test is completed according to the preset time, and the work is completed.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims

1. A fuel cell testing apparatus characterized by: it comprises a frame (1) having an upper portion, a middle portion and a lower portion; a pressurizing mechanism (2) which is arranged at the upper part of the frame (1) and is adjustable; a protective cover movable sliding mechanism (3) which is configured in the middle of the frame (1) through a working panel (30); a movable heating protective cover (4) which is movably arranged on the protective cover movable sliding mechanism (3) and can slide left and right on the upper part of the protective cover movable sliding mechanism; a heating test assembly (5) which is arranged in the middle and is partially positioned in the movable heating protection cover (4); the heating test component (5) can be configured with a fuel cell covered by a movable heating protective cover (4) and then subjected to a heating test.

2. The fuel cell testing apparatus according to claim 1, characterized in that: the movable heating protective cover (4) comprises a group of movable heating protective cover components (40) which are opposite left and right; the group of movable heating protective cover assemblies (40) can be in two states of left-right separation/left-right closing on the protective cover movable sliding mechanism (3), namely, a door closing state/a door opening state is realized.

3. The fuel cell testing apparatus according to claim 2, characterized in that: the movable heating protection cover assembly (40) comprises a supporting plate (41) for the movable heating protection cover, a heating body (42) with a heating cavity (420), a heating frame (43) arranged outside the heating body (42) in a surrounding mode, and a door body (44) arranged at the position of the heating frame (43);

a plurality of sliding blocks (32) are fixedly arranged below the supporting plate (41) for the movable heating protective cover;

the upper part of the heating body (42) is provided with a heating and pressurizing channel (421) for the ceramic pressurizing rod (280) to pass through; the heating device is characterized in that a heating channel (422) which is transversely embedded and arranged is arranged in the heating body (42), three surfaces of the heating cavity (420) are provided with three groups of heating channels (422) in a surrounding mode, and a resistance wire for heating is arranged in each heating channel (422).

4. The fuel cell testing apparatus according to claim 3, characterized in that: the pressurizing mechanism (2) comprises a pressurizing fixed plate (20) fixedly arranged on the upper part of the rack (1), a screw rod sliding table module (21) transversely fixed on the pressurizing fixed plate (20), an X-axis servo electric shock driving sliding table (22) fixedly arranged on the pressurizing fixed plate (20) and arranged in parallel with the screw rod sliding table module (21), a Y-axis servo electric cylinder driving sliding table (23), a pressurizing sliding plate (24) slidably arranged on the screw rod sliding table module (21), a pressurizing support plate (25) positioned right above the pressurizing sliding plate (24), a cylinder fixed plate I (26) positioned right above the pressurizing support plate (25), a pressurizing cylinder (27), a ceramic pressurizing assembly (28) and a cylinder fixed plate II (29); the pressurizing sliding plate (24) and the pressurizing supporting plate (25) are supported and fixed through a plurality of vertical rods, the pressurizing supporting plate (25) and the cylinder fixing plate I (26) are supported and fixed through a plurality of vertical rods, the cylinder fixing plate I (26) and the cylinder fixing plate II (29) are movably fixed through a plurality of vertical rods, and the cylinder fixing plate II (29) can slide up and down under the driving of the Y-axis servo electric cylinder driving sliding table (23); the lower part of the second cylinder fixing plate (29) is fixedly arranged on the movable column (290) and is matched and fixed with the pressurizing support plate (25), and the ceramic pressurizing assembly (28) is arranged below the pressurizing support plate (25) and can perform pressurizing operation under the driving of the Y-axis servo electric cylinder driving sliding table (23).

5. The fuel cell testing apparatus according to claim 4, characterized in that: the ceramic pressurizing assembly (28) penetrates through the heating pressurizing channel (421) from top to bottom to the heating cavity (45);

the ceramic pressurizing assembly (28) comprises a pressurizing connecting plate (281) and a ceramic pressurizing rod (280) arranged at the pressurizing connecting plate (281); the ceramic pressure bar (280) extends downwardly into the heating chamber (45) and is accessible above the heating test assembly (5).

6. The fuel cell testing apparatus according to claim 5, characterized in that: a pressure sensor (250) is arranged at the matching part of the movable column (290) and the pressurizing support plate (25);

the driving end of the X-axis driving sliding table (22) can drive the pressurizing sliding plate (24) to horizontally slide on the screw rod sliding table module (21) through a connecting mechanism (220).

7. The fuel cell testing apparatus according to claim 6, characterized in that: the device also comprises a limiting component (7) fixedly arranged on the pressurizing fixing plate (20); the limiting assembly (7) comprises a group of limiting pieces (71), and the group of limiting pieces (71) are arranged at the tail end of the horizontal position of the screw rod sliding table module (21) and are provided with a group of sensors (72).

8. The fuel cell testing apparatus according to claim 7, characterized in that: the protective cover movable sliding mechanism (3) comprises a sliding rail (31) arranged on the working panel (30) and a sliding block (32) arranged below the movable heating protective cover (4), wherein the number of the sliding rail (31) and the sliding block (32) is more than 2; the movable heating protective cover (4) moves horizontally on the protective cover movable sliding mechanism (3).

9. The fuel cell testing apparatus according to claim 8, characterized in that: the device also comprises a link mechanism (6); the connecting rod mechanism (6) comprises a connecting rod driving cylinder (60) and a connecting rod (61) which are fixedly arranged on the rack (1); the connecting rod mechanism (6) pulls the connecting rod (61) through the connecting rod driving cylinder (60) so as to drive the heating test assembly (5) to slide left and right on the protective cover sliding mechanism (3), and sliding operation is realized.

10. The fuel cell testing apparatus according to claim 9, characterized in that: the heating test assembly (5) comprises a supporting seat (51) for heating test, a mold (52) for heating test and testing, and a heat preservation gas pipeline (53), wherein the mold (52) for heating test and testing is arranged above the supporting seat (51) for heating test and fixed together; the heat preservation gas pipeline (53) penetrates through the supporting seat (51) for the heating test from bottom to top and is arranged around the die (52) for the heating test in a surrounding mode.