CN214200523U

CN214200523U - Fuel cell stack leakage detection equipment

Info

Publication number: CN214200523U
Application number: CN202022386698.9U
Authority: CN
Inventors: 杨宇明; 盛斯斯; 朱俊娥; 欧阳洵; 赖平化
Original assignee: Beijing Nowogen Technology Co ltd
Current assignee: Beijing Nowogen Technology Co ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-09-14
Anticipated expiration: 2030-10-23

Abstract

The utility model relates to a fuel cell piles equipment of leaking hunting, mainly include elevating system, positioning mechanism, pressure mechanism, gas tightness detection mechanism etc. and pressure mechanism contains this equipment rack, and inside this mechanism was arranged in to other mechanism branches. The mechanisms are mutually matched to assist in finishing the electric pile loading and air tightness detection process. The utility model discloses a pressure mechanism includes: the device comprises a press base, a pressure sensor, a press outer frame, a pressure motor, a pressure guide pillar, a press upright post, a pressure rod, a press support, a pressure contact plate and a pressure sensor. The press base is on the level ground, and the press frame is stood on the press base, and pressure motor controls the flexible of pressure pole at press frame top, and the end and the pressure connection board of pressure pole link to each other, and the rethread pressure guide pillar passes pressure to pressure contact plate on. In order to monitor the pressure of the press in real time, the pressure sensor is connected with the press upright post, placed on the press base platform and connected with the press support.

Description

Fuel cell stack leakage detection equipment

Technical Field

The utility model relates to a fuel cell pile assembly and quality detection technique belongs to fuel cell production field, particularly is a fuel cell dress piles equipment of leaking hunting.

Background

Proton Exchange Membrane Fuel Cells (PEMFC) are formed by stacking a plurality of sub-electrodes, and comprise a plurality of parts such as a cathode bipolar plate, a anode bipolar plate, a membrane electrode, a copper electrode, a mounting plate and the like, and the stacking process is more and takes longer time. The air tightness of an anode channel, a cathode channel and a cooling channel of the electric pile needs to be detected when the electric pile is assembled, so that the gas communication among the channels is prevented, and the product performance and the safety are prevented from being influenced. In the prior art, most of fuel cells firstly complete the assembly and packaging of the galvanic pile and then carry out air tightness detection on the galvanic pile, if the air tightness is detected to be unqualified, the galvanic pile is disassembled and the efficiency is checked again to be too low, and meanwhile, the parts of the galvanic pile can be damaged in the process of disassembling and reassembling the galvanic pile, so that the cost is increased. In addition, the electric pile is large in size, heavy in weight, inconvenient to transfer, labor-consuming in carrying different equipment rooms, and capable of influencing the performance of the electric pile due to collision and severe vibration

The utility model discloses a be CN201921606866.1 utility model patent, provide a servo rotatory fuel cell stack kludge, dress in its test is piled and is needed dismouting locating lever many times with the in-process of leaking hunting, and must encapsulate earlier and just can carry out the gas tightness and detect, leans on self gravity and locating lever contact to adjust well the alignment because of each part thereof, can't leak hunting under the state of not demolising the locating lever in the scheme that provides, presses the chance otherwise to have the interference with the locating lever. In addition, repeated disassembly and assembly of the positioning rod can influence the stacking precision, and the actual production requirement cannot be met.

The utility model discloses a publication number is CN201922436019.1 utility model patent, a multipurpose frock for fuel cell stack equipment and leak hunting is provided, this frock is only applicable to pile screw rod packaging mode, bandage and curb plate packaging mode that incompatible present mainstream trend adopted, if add the bandage, this tool only can't guarantee through locating hole and reference column that the material piles up neatly, and can interfere when actually assembling with the press, do not have sealed original paper between each exit of tool and pile, gas tightness when can't guarantee the test. The three channels of air inlet and exhaust on two sides share one air cavity, so that the air tightness detection of a single channel cannot be carried out, and the actual use requirement cannot be met.

The two methods are not suitable for batch production, and the positioning jig needs to be repeatedly disassembled and assembled, so that the practical use is inconvenient, and the production beat is influenced

In view of the above problems, the technical problem to be solved by the present invention is to provide a fuel cell stack leakage detection device, which solves the problem of packaging a fuel cell under the condition of ensuring that the fuel cell is qualified in air tightness; the problems that the fuel cell stack is large in size, heavy in weight and difficult to take and place on equipment are solved; the problem of uneven regularity of parts such as a fuel electric stack polar plate, a membrane electrode and the like during stacking is solved; the problems of improving the consistency of products, improving the production efficiency and the like during batch production of the galvanic pile are solved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of fuel cell dress piles equipment of leaking hunting mainly includes elevating system, positioning mechanism, pressure mechanism, gas tightness detection mechanism etc. and pressure mechanism contains this equipment rack, and other mechanisms divide and arrange this mechanism in inside. The mechanisms are mutually matched to assist in finishing the electric pile loading and air tightness detection process. The device is whole arrange the level subaerial in, at the within range that the manipulator goes up and down the utility model discloses a pressure mechanism includes: the device comprises a press base, a pressure sensor, a press outer frame, a pressure motor, a pressure guide pillar, a press upright post, a pressure rod, a press support, a pressure contact plate and a pressure sensor. The press base is on the level ground, and the press frame is stood on the press base, and pressure motor controls the flexible of pressure pole at press frame top, and the end and the pressure connection board of pressure pole link to each other, and the rethread pressure guide pillar passes pressure to pressure contact plate on. The length of pressure rod depends on the pile height, for real time monitoring press pressure size, links to each other pressure sensor and press stand and arranges in on the press base platform and link to each other with the press support, the utility model discloses a positioning mechanism includes: the positioning device comprises a positioning column, a positioning column guide rail, a positioning push rod, a positioning cylinder and a positioning platform; on press support was arranged in to positioning mechanism is whole, there were two reference columns back one side, and the left and right sides respectively had a reference column totally 4 reference columns, all adorned in the reference column guide rail, and the reference column of the left and right sides links to each other with the cylinder push rod, and location cylinder accessible location push rod control reference column back-and-forth movement in the reference column guide rail, the utility model discloses an elevating system includes: lifting cylinder, lifting push rod, cylinder layer board, lift guide pillar. The lifting cylinder is arranged in the press base and is connected with the cylinder supporting plate through the lifting push rod, the lifting guide pillar fixed on the cylinder supporting plate and the four guide holes on the bottom surface of the leakage detection jig are coaxial, and the shock pad is arranged at the contact position of the lifting guide pillar and the leakage detection jig.

Further, the utility model discloses an airtightness detection mechanism includes: the leak hunting tool, end cap, sealing washer and outside system of leaking hunting. The mechanism is arranged in a groove reserved in the positioning mechanism, a cathode air inlet, an anode air inlet and a cooling air inlet are arranged on the leak detection jig, and each air inlet is communicated with a corresponding air inlet channel. Three inlets

Further, the utility model discloses contain a manipulator when implementing full-automatic formation, arrange the one side that this equipment did not adorn the reference column in, keep suitable distance in order to satisfy the manipulator and accomplish the getting of each material on equipment and put and get shifting of galvanic pile. The manipulator can automatically replace the tool according to the category and the function of the material.

Further, the utility model discloses well manipulator need lift the tool together when taking off the pile on the equipment, and there is the counter bore tool bottom, and is corresponding and can insert one section degree of depth with the position of lifter, and is more stable when making the pile go up and down.

The utility model discloses there are two sets of tools can use alternately, and reserve tool is placed near equipment, can be accomplished placing of tool by manual work or manipulator.

The fuel cell pile assembly firstly needs to ensure that all parts are aligned with each other through a positioning mechanism, constant pressure is provided for an air tightness detection mechanism through a pressure mechanism to finish pile leakage detection, the pile reaches a preset height to finish packaging and fixing, finally, the pile is lifted to an operable position from the equipment through a lifting mechanism, and then the pile is taken away by a manipulator. All the procedures are mutually matched and do not interfere with each other, and the integration of functions such as stacking, leakage detection and transfer can be realized.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a can accomplish fuel cell stack assembly and process detection twice process on same equipment simultaneously, guarantee that the galvanic pile gas tightness of encapsulation is qualified, avoid revealing to reprocess and increase work load because of the galvanic pile, cause the influence to the galvanic pile gas tightness when reducing the removal between different stations simultaneously.

2. The utility model discloses a semi-automatization is accomplished and is piled and gas tightness detects twice process, improves production efficiency and guarantees the uniformity of product, satisfies actual batchization fuel cell production and piles and the needs of leaking hunting.

3. The utility model discloses a can compatible multiple pile packaging method, like bandage encapsulation, screw rod encapsulation and curb plate encapsulation etc..

4. The utility model discloses a both can be used to the laboratory research and development dress heap, also can be used to automatic batch production, automatic batch production.

5. The utility model adds the positioning device, which can align the materials in the stacking process;

6. the utility model can meet the assembly and test of the galvanic pile with different numbers and specifications, such as the metal plate galvanic pile, the graphite plate galvanic pile, etc.;

7. the utility model discloses a can realize continuity of operation, can use two sets of tools alternate use for guaranteeing the beat, the manipulator removes the back with the good electric pile of previous encapsulation together with the tool, can put another set of tool immediately and continue the production of piling.

8. The utility model discloses a transfer on the galvanic pile slave unit is accomplished through the manipulator, can steadily rotate the galvanic pile to the angle of supplementary subsequent handling, and the subsequent handling of being convenient for goes on.

9. The utility model provides a manipulator can assist and accomplish the pile removal work of galvanic pile, avoids key parts such as membrane electrode to cause the damage and load in mixture because of the manual work.

Drawings

FIG. 1 is a schematic view of the overall structure of the fuel cell stack leakage detection system of the present invention;

FIG. 2 is a schematic diagram of the overall structure of the electric pile removed after the electric pile is packaged;

FIG. 3 is a schematic structural view of the positioning mechanism of the present invention;

FIG. 4 is a view of the leakage detecting jig of the present invention;

FIG. 5 is a schematic cross-sectional view of the leak detection jig of the present invention;

fig. 6 is a schematic structural view of the lifting mechanism of the present invention;

fig. 7 is a schematic diagram of the leakage detecting external system of the present invention.

1. A press base; 2. a lifting mechanism; 3. a pressure sensor; 4. an unpackaged fuel cell stack; 5. A leakage detection jig; 6. a pressure contact plate; 7. a positioning mechanism; 8. a pressure guide post; 9. a pressure connection plate; 10. a pressure rod 11 and a press outer frame; 12. a pressure motor; 13. a lifting push rod; 14. a lifting cylinder; 15. a positioning column; 16. positioning column guide rails; 17. packaging the fuel cell stack; 18. a lifting guide post; 19. a press support; 20. positioning the air cylinder; 21. positioning the platform; 22. positioning the push rod; 23. an anode gas inlet; 24. cooling the air inlet; 25. a cathode gas inlet; 26. a stack cathode channel; 27. a stack cooling channel; 28. a strap slot; 29. a stack anode channel; 30. a plug; 31. a seal ring; 32. a cylinder support plate; 33. the press stand.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a pair of fuel cell dress piles equipment of leaking hunting.

Example 1: full-automatic scheme

Before the pile is loaded, the positioning cylinder push rod is in a tightening state, and the positioning column is far away from the pile. The mechanical arm stacks the parts such as the electric pile tail plate, the negative and positive bipolar plates and the membrane electrode on the leakage detection tool in sequence according to a designated sequence, slowly falls down along the positioning column, and after the assembly of the last part is completed, the positioning cylinder controls the positioning push rod to push the left positioning rod and the right positioning rod to clamp each part of the electric pile, so that each part is aligned. The pressure motor is started, the pressure rod extends to press the pressure contact plate and the electric pile tightly and apply certain pressure. The air tightness detection mechanism is started, and the externally communicated air passage is respectively connected with the anode air inlet, the cathode air inlet and the cooling air inlet of the leakage detection jig. When the anode channel is measured, the electromagnetic valve A is opened, compressed air enters the galvanic pile, the gas pressure gauge at the gas inlet end displays that the electromagnetic valve A is closed to stop gas inlet after the gas inlet pressure reaches, the pressure sensor monitors the pressure variation, and the cathode and the cooling channel have the same steps. If any channel exceeds the qualified test and is qualified, the air tightness of the galvanic pile does not reach the standard, the exhaust valve A/B/C is opened, the pressure motor is started to rotate reversely, the pressure rod is retracted, and the actions are repeated after the problems are checked. If the air tightness of the three channels is qualified, the manipulator electric pile is used for packaging. The positioning cylinder is started to pull the positioning rod to the direction far away from the electric pile. The lifting cylinder is started to drive the lifting push rod to extend, the lifting guide pillar is driven to penetrate through four vacant positions reserved on the press support, the shock pad at the top end of the lifting guide pillar is in contact with four positioning holes behind the leakage detection jig, the galvanic pile is stably ejected out, the height of the mechanical arm 'Contraband' type clamp capable of stretching out is increased, after the mechanical arm galvanic pile is clamped, the bottom surface of the galvanic pile is transferred upwards to the next station by rotating 180 degrees, and other parts such as a transfer plate and an interface are installed.

And finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fuel cell stack leak detection apparatus, characterized in that: mainly include elevating system, positioning mechanism, pressure mechanism, gas tightness detection mechanism, pressure mechanism includes: press base, press frame, pressure motor, pressure contact plate and pressure sensor, the press base is subaerial at the level, the press frame is stood on the press base, pressure motor controls the flexible of pressure pole at press frame top, and the end of pressure pole links to each other with the pressure connection board, and rethread pressure guide pillar passes pressure to the pressure contact plate on, and pressure sensor and press stand link to each other and arrange in on the press base platform and link to each other with the press support, positioning mechanism includes: reference column, reference column guide rail, location push rod, location cylinder and locating platform, positioning mechanism wholly arranges in on the press support, and there are two reference columns back one side, and the left and right sides respectively has a reference column totally 4 reference columns, all adorns in the reference column guide rail, and the reference column of the left and right sides links to each other with the cylinder push rod, and location cylinder accessible location push rod control reference column is back-and-forth movement in the reference column guide rail, elevating system includes: lifting cylinder, lifting push rod, cylinder layer board, lift guide pillar.

2. A fuel cell stack leak hunting apparatus according to claim 1, wherein: the lifting cylinder is arranged in the press base and is connected with the cylinder supporting plate through the lifting push rod, the lifting guide pillar fixed on the cylinder supporting plate and the four guide holes in the bottom surface of the leakage detection jig are coaxial, and the shock pad is arranged at the contact position of the lifting guide pillar and the leakage detection jig.

3. A fuel cell stack leak hunting apparatus according to claim 2, wherein: the airtightness detection mechanism includes: the leak hunting tool, end cap, sealing washer and outside system of leaking hunting.

4. A fuel cell stack leak hunting apparatus according to claim 3, wherein: the air tightness detection mechanism is arranged in a groove reserved in the positioning mechanism, the leak detection jig is provided with a cathode air inlet, an anode air inlet and a cooling air inlet, and each air inlet is communicated with a corresponding air inlet channel.