CN218297073U

CN218297073U - Flatness detection device for membrane electrode of hydrogen fuel cell

Info

Publication number: CN218297073U
Application number: CN202222764282.5U
Authority: CN
Inventors: 晏圣古; 袁坚; 赵胤先; 彭旭
Original assignee: Linguang Measurement Technology Shenzhen Co ltd
Current assignee: Linguang Measurement Technology Shenzhen Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-01-13
Anticipated expiration: 2032-10-19

Abstract

The utility model provides a hydrogen fuel cell membrane electrode flatness detection device relates to flatness detection technical field, including a frame and a control system, an automatic displacement platform of first direction has set firmly in the frame, the automatic displacement bench top of first direction has set firmly a vacuum adsorption tool, still set firmly an automatic displacement platform of second direction in the frame, the automatic displacement bench of second direction has set firmly an automatic displacement platform of third direction, the automatic displacement bench bottom of third direction has set firmly a spectrum confocal sensor, measures the membrane electrode surface through adopting the spectrum confocal sensor, and the spectrum confocal sensor sends the incident light towards the membrane electrode surface that awaits measuring, and the incident light is passed back to the spectrum sensor after the confocal reflection of membrane electrode surface that awaits measuring, and the control system that the spectrum confocal sensor is connected reachs the distance of spectrum confocal sensor and the membrane electrode surface that awaits measuring through the spectral analysis of reverberation to obtain measured data.

Description

Flatness detection device for membrane electrode of hydrogen fuel cell

Technical Field

The utility model relates to a membrane electrode production technical field especially relates to a hydrogen fuel cell membrane electrode flatness detecting device.

Background

The membrane electrode is a place for energy conversion inside the fuel cell, takes charge of multi-phase substance transmission (liquid water, hydrogen, oxygen, proton, electron transmission and the like) in the fuel cell, converts chemical energy of hydrogen into electric energy through electrochemical reaction, and directly influences the performance of a fuel cell stack and even the whole hydrogen fuel cell system, so the membrane electrode is a core component of the hydrogen fuel cell. In a hydrogen fuel cell, a membrane electrode is usually placed between two membrane electrodes, and since the flatness of the membrane electrode directly affects the sealing performance of the two membrane electrodes, which in turn affects the safety and the electric energy conversion efficiency of the fuel cell, the flatness of the membrane electrode needs to be measured and detected in the production and manufacture of the membrane electrode, and meanwhile, since the membrane electrode is usually made of soft materials, the measurement difficulty is higher compared with that of hard materials.

In the prior art, three-coordinate measuring instruments are mainly used for measuring the flatness of the membrane electrode of the hydrogen fuel cell, but the three-coordinate measuring instruments have the following problems: firstly, the three-coordinate measuring instrument adopts a contact probe, so that the flexible surface of the membrane electrode is easily damaged during measurement, and the sealing property of the membrane electrode is influenced; secondly, the three-coordinate measuring instrument adopts a point measuring mode, a plurality of single points need to be selected for measuring one by one, the time consumption of single measurement is long, the efficiency of measuring the planeness of the whole membrane electrode is low, the time consumption is long, and the batch detection of the membrane electrode is not facilitated; and thirdly, the three-coordinate instrument adopts the traditional clamp to fix the membrane electrode, and the membrane electrode is made of flexible materials, so that the clamp is easy to cause secondary deformation of the membrane electrode.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a device for detecting the flatness of a membrane electrode of a hydrogen fuel cell.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a device for detecting the flatness of a membrane electrode of a hydrogen fuel cell comprises a rack and a control system, wherein a first-direction automatic displacement table is fixedly arranged on the rack, a vacuum adsorption jig is fixedly arranged at the top of the first-direction automatic displacement table, a second-direction automatic displacement table is also fixedly arranged on the rack, a third-direction automatic displacement table is fixedly arranged on the second-direction automatic displacement table, a spectrum confocal sensor is fixedly arranged at the bottom of the third-direction automatic displacement table, and the spectrum confocal sensor, the first-direction automatic displacement table, the second-direction automatic displacement table and the third-direction automatic displacement table are all electrically connected with the control system;

the first direction automatic displacement table, the second direction automatic displacement table and the third direction automatic displacement table are perpendicular to each other.

Preferably, the first direction automatic displacement table and the second direction automatic displacement table are driven by linear motors.

Preferably, the third direction automatic displacement table is driven by a stepping motor.

Preferably, the vacuum adsorption jig is connected with an air pump through a vacuum channel.

Preferably, the control system is electrically connected with an alarm lamp.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect, the utility model discloses an adopt spectrum confocal sensor to measure membrane electrode surface, spectrum confocal sensor sends the incident light towards the membrane electrode surface that awaits measuring, and the incident light passes back to spectrum confocal sensor after the membrane electrode surface reflection that awaits measuring, and the control system that spectrum confocal sensor connects reachs spectrum confocal sensor and the membrane electrode surface's that awaits measuring distance through the spectral analysis of reverberation to obtain measured data, consequently compare in adopting the three-coordinate appearance to measure, the utility model discloses an optical method has avoided causing the secondary damage to the membrane electrode, guarantees the membrane electrode integrality that awaits measuring. And simultaneously, the utility model discloses an adopt spectrum confocal sensor and three automatic displacement platform cooperation, can carry out the high accuracy scanning to the membrane electrode surface that awaits measuring fast, the point cloud data of generation can calculate the plane degree fast, compares in traditional three-coordinate appearance single-point measurement, and it is long when having shortened the measurement by a wide margin, has promoted measurement of efficiency. In addition, the utility model discloses a membrane electrode that awaits measuring is fixed to the vacuum adsorption tool, has eliminated and has leaded to the membrane electrode warpage to appear because of the clamping-force of anchor clamps is too big, has also avoided the centre gripping of anchor clamps to lead to the membrane electrode surface to produce the condition of harm.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the present invention;

fig. 3 is a schematic view of the back structure of the present invention.

Illustration of the drawings:

1. a frame; 2. a first direction automatic displacement table; 3. a vacuum adsorption jig; 4. a second direction automatic displacement table; 5. a third direction automatic displacement table; 6. a spectral confocal sensor; 7. a stepping motor; 8. a control system; 9. an alarm light; 10. an air pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in 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.

Examples

As shown in fig. 1-3, the utility model provides a technical solution: a hydrogen fuel cell membrane electrode flatness detection device comprises a rack 1 and a control system 8, wherein a first-direction automatic displacement table 2 is fixedly arranged on the rack 1, a vacuum adsorption jig 3 is fixedly arranged at the top of the first-direction automatic displacement table 2, a second-direction automatic displacement table 4 is also fixedly arranged on the rack 1, a third-direction automatic displacement table 5 is fixedly arranged on the second-direction automatic displacement table 4, a spectrum confocal sensor 6 is fixedly arranged at the bottom of the third-direction automatic displacement table 5, and the spectrum confocal sensor 6, the first-direction automatic displacement table 2, the second-direction automatic displacement table 4 and the third-direction automatic displacement table 5 are all electrically connected with the control system 8;

wherein, the first direction automatic displacement platform 2, the second direction automatic displacement platform 4 and the third direction automatic displacement platform 5 are mutually vertical.

The first direction automatic displacement table 2 and the second direction automatic displacement table 4 are driven by linear motors, and the first direction automatic displacement table 2 and the second direction automatic displacement table 4 are driven to move by the linear motors.

Wherein, the third direction automatic displacement platform 5 is driven by the stepping motor 7, and the third direction automatic displacement platform 5 is driven to move by the stepping motor 7.

Wherein, the vacuum adsorption jig 3 is connected with an air pump 10 through a vacuum channel, and the air pump 10 controls the vacuum adsorption jig 3 to adsorb the membrane electrode.

Wherein, control system 8 electricity is connected with a warning light 9, and control system 8 sends alarm signal to warning light 9, then carries out the police dispatch newspaper through warning light 9, and the guide staff rejects unqualified product.

The working principle is as follows:

as shown in fig. 1-3:

s1, controlling a third-direction automatic displacement table 5 through a control system to enable a spectrum confocal sensor 6 to reset to an original point, placing a membrane electrode to be detected on a vacuum adsorption jig 3, and then starting an air pump 10 to adsorb and fix the membrane electrode;

s2, driving the spectral confocal sensor 6 to descend to a proper working distance by the third-direction automatic displacement table 5, driving the spectral confocal sensor 6 to perform displacement in the second direction by the second-direction automatic displacement table 4, driving the vacuum adsorption jig 3 to perform displacement in the first direction by the first-direction automatic displacement table 2, measuring corresponding data by the spectral confocal sensor 6 in the displacement process, transmitting the corresponding data to the control system 8, and processing the acquired data by the control system 8;

s3, a spectrum confocal sensor 6 measures the flatness of the membrane electrode to be detected, the range of the flatness FLTt is configured on software of a control system 8, and if the flatness value FLTt is less than 0.8mm (FLTt is the sum of absolute values of deviation of wave peaks and wave troughs in a peak-valley flatness error plane and an ideal plane, and the ideal plane can use a minimum area reference plane or a least square reference plane), the membrane electrode to be detected on the surface meets the design requirements;

s4, collecting the flatness data of the membrane electrode scanned by the spectrum confocal sensor 6 in a control system 8, analyzing and processing carding, and after detection is finished, putting a product into a specified product box (external) if a sample is qualified according to detection result data, and putting the product into the specified product box (external) if the sample is unqualified;

s5, when the spectrum confocal sensor 6 detects an unqualified membrane electrode, the control system 8 sends an alarm signal to the alarm lamp 9, and then the alarm lamp 9 gives an alarm to guide the staff to remove the unqualified product;

and S6, after the measurement is finished, returning reference points of the first-direction automatic displacement table 2, the second-direction automatic displacement table 4 and the third-direction automatic displacement table 5, and closing the vacuum adsorption jig 3.

The utility model discloses an adopt spectrum confocal sensor 6 to measure the membrane electrode surface, spectrum confocal sensor 6 sends the incident light towards the membrane electrode surface that awaits measuring, and the incident light is passed back to spectrum confocal sensor 6 after the membrane electrode surface reflection that awaits measuring, and the control system 8 that spectrum confocal sensor 6 connects reachs the distance of spectrum confocal sensor 6 and the membrane electrode surface that awaits measuring through the spectral analysis of reverberation to obtain measured data, consequently compare in adopting the three-coordinate appearance to measure, the utility model discloses an optical method has avoided causing the secondary damage to the membrane electrode, guarantees the membrane electrode integrality that awaits measuring. And simultaneously, the utility model discloses an adopt spectrum confocal sensor 6 and three automatic displacement platform cooperation, can carry out the high accuracy scanning to the membrane electrode surface that awaits measuring fast, the point cloud data of generation can calculate the plane degree fast, compares in traditional three-coordinate appearance single-point measurement, and it is long when having shortened the measurement by a wide margin, has promoted measurement of efficiency. Additionally, the utility model discloses a membrane electrode that awaits measuring is fixed to vacuum adsorption tool 3, has eliminated because of the too big warpage that leads to the membrane electrode of the clamping-force of anchor clamps appears, has also avoided the centre gripping of anchor clamps to lead to the membrane electrode surface to produce the condition of harm.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims

1. The device for detecting the flatness of the membrane electrode of the hydrogen fuel cell is characterized by comprising a rack (1) and a control system (8), wherein a first-direction automatic displacement table (2) is fixedly arranged on the rack (1), a vacuum adsorption jig (3) is fixedly arranged at the top of the first-direction automatic displacement table (2), a second-direction automatic displacement table (4) is fixedly arranged on the rack (1), a third-direction automatic displacement table (5) is fixedly arranged on the second-direction automatic displacement table (4), a spectrum confocal sensor (6) is fixedly arranged at the bottom of the third-direction automatic displacement table (5), and the spectrum confocal sensor (6), the first-direction automatic displacement table (2), the second-direction automatic displacement table (4) and the third-direction automatic displacement table (5) are electrically connected with the control system (8);

the first direction automatic displacement table (2), the second direction automatic displacement table (4) and the third direction automatic displacement table (5) are perpendicular to each other.

2. The hydrogen fuel cell membrane electrode flatness detecting device according to claim 1, characterized in that: the first direction automatic displacement table (2) and the second direction automatic displacement table (4) are driven by linear motors.

3. The apparatus for detecting the flatness of a membrane electrode assembly for a hydrogen fuel cell according to claim 1, wherein: the third direction automatic displacement table (5) is driven by a stepping motor (7).

4. The hydrogen fuel cell membrane electrode flatness detecting device according to claim 1, characterized in that: the vacuum adsorption jig (3) is connected with an air pump (10) through a vacuum channel.

5. The hydrogen fuel cell membrane electrode flatness detecting device according to claim 1, characterized in that: the control system (8) is electrically connected with an alarm lamp (9).