CN201218769Y - Fuel battery membrane electrode leak detector - Google Patents
Fuel battery membrane electrode leak detector Download PDFInfo
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- CN201218769Y CN201218769Y CNU2008203006086U CN200820300608U CN201218769Y CN 201218769 Y CN201218769 Y CN 201218769Y CN U2008203006086 U CNU2008203006086 U CN U2008203006086U CN 200820300608 U CN200820300608 U CN 200820300608U CN 201218769 Y CN201218769 Y CN 201218769Y
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- membrane electrode
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- out console
- motor
- fuel cell
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Abstract
The utility model provides a leakage detector of fuel cell membrane electrode, comprising a frame (6), an upper detecting plate (4) and a lower detecting plate (5); wherein, the upper detecting plate (4) is connected with a motor moving device through insulating material (10); the motor moving device is provided in the frame (6); the lower detecting plate (5) connected with the insulating material (10) at the lower end is provided on a base (12); a meter (9) for measuring the voltage is provided between the upper and lower detecting plates. The fuel cell membrane electrode of the utility model is able to rapidly and exactly detect the leakage of the membrane electrode and provide efficient protection for ensuring the production quality and production efficiency of the membrane electrode.
Description
Technical field
The utility model relates to a kind of leak locator, especially relates to a kind of leak locator of fuel cell membrane electrode.
Background technology
Fuel cell is the device that a kind of chemical energy that produces can be with fuel and oxygenant generation electrochemical reaction the time is transformed into electric energy.The core component of this device is membrane electrode (Membrane Electrode Assembly, be called for short MEA), membrane electrode can be made up of by conductive porous property diffusion material (as carbon paper) with two that are clipped in the film both sides a PEM, is evenly distributed with the catalyzer (as metal platinum) of the caused electrochemical reaction of tiny dispersion on two boundary surfaces that PEM contacts with conductive material.Draw by external circuit with the electronics that conductive body will take place to produce in the electrochemical reaction process on the membrane electrode both sides, has just constituted current return.
Anode tap at membrane electrode, fuel can pass poriness diffusion material (as carbon paper) by infiltration, and in catalyst surface generation electrochemical reaction, loses electronics and form positive ion, positive ion can pass PEM by migration, arrives the other end cathode terminal of membrane electrode.Cathode terminal at membrane electrode, the gas (as air) that contains oxygenant (as oxygen), pass poriness diffusion material (as carbon paper) by infiltration, and in catalyst surface generation electrochemical reaction, obtain electronics and form negative ion, this negative ion further combines with the positive ion of coming from the anode tap migration, forms reaction product.
Be fuel with hydrogen, be in the Proton Exchange Membrane Fuel Cells of oxygenant (or be oxygenant with the pure oxygen) with the air that contains oxygen, fuel hydrogen loses the catalytic electrochemical reaction of electronics in the anodic site, form hydrogen positive ion (proton), its electro-chemical reaction equations is:
H
2＝2H
++2e
-
Oxygen obtains the catalytic electrochemical reaction of electronics in the cathodic area, form negative ion, and this negative ion further combines with the hydrogen positive ion of coming from the anode tap migration, forms reaction product water.Its electro-chemical reaction equations is:
2H
++1/2O
2+2e
-＝H
2O
PEM in the fuel cell is except the proton that is used for taking place electrochemical reaction and migration exchange reaction and produces, its effect comprises that also air-flow that will contain fuel hydrogen and the air-flow that contains oxygenant (oxygen) separate, and they can not mixed mutually and produces the explosion type reaction.
In typical Proton Exchange Membrane Fuel Cells, membrane electrode generally is placed between the pole plate of two conductions, all offers diversion trench on the two-plate, therefore is called guide plate again.On the surface that diversion trench is opened in membrane electrode contacts, mill formation at quarter by die casting, punching press or machinery, its quantity is at one or more.Guide plate can be made by metal material, also can be made by graphite material.The effect of the diversion trench on the guide plate is anodic site or the cathodic area that fuel or oxygenant is imported the membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there are a membrane electrode and two guide plates, two guide plate branches are located at the membrane electrode both sides, a guide plate as anode fuel, another is as the guide plate of cathode oxidant.These two guide plates also are the mechanical support on membrane electrode both sides both as current collector plate.Diversion trench on the guide plate is the passage that fuel or oxygenant enter the male or female surface, also is the exhalant canal that the water that generates in the battery operation process is taken away.
In order to increase the power of Proton Exchange Membrane Fuel Cells, the composition electric battery that usually mode of two or more monocells by straight folded mode or tiling connected together, or be called battery pile.This electric battery tightens together by front end-plate, end plate and pull bar usually and becomes one.In electric battery, the two sides of the pole plate between two PEMs all is provided with diversion trench, is called bipolar plates.The wherein one side of bipolar plates is as the anode guide face of a membrane electrode, and another side is then as the cathode diversion face of another adjacent membranes electrode.1), the import and the flow-guiding channel of fuel and oxidant gas a typical electric battery also comprises usually:.2), the import and export and the flow-guiding channel of cooling fluid (as water) its effect is that fuel (as hydrogen, methyl alcohol or the hydrogen-rich gas that obtained after reforming by methyl alcohol, rock gas, gasoline) and oxygenant (mainly being oxygen or air) are distributed in the diversion trench of each anode, cathode plane equably:.3), the outlet and the flow-guiding channel of fuel and oxidant gas its effect is that cooling fluid is distributed in the cooling duct in each electric battery equably, absorbs the reaction heat that produces in the fuel cell and takes it out of electric battery and dispel the heat:.Its effect is that the unnecessary fuel gas and the oxygenant that do not participate in reaction are discharged, and will react the liquid state of generation or the water of gaseous state simultaneously and take out of.Above-mentioned fuel is imported and exported, oxygenant is imported and exported and the import and export of cooling fluid all are opened on the end plate of fuel cell group usually or be opened in respectively on two end plates.Membrane electrode is the core component of fuel cell, the quality of its quality is the key of the whole fuel battery performance of decision, the proton that membrane electrode produces in transportable exchange reaction, can not allow the fuel hydrogen and the air of membrane electrode both sides intersect, in order to avoid they mix mutually and blast.That is to say that membrane electrode definitely can not leak gas, whether the detection membrane electrode leaks gas is that membrane electrode is carried out the important ring that quality is checked on.In production reality, the quality testing that must all whether leak gas to each membrane electrode is rigid in checking up, and therefore, must design a kind of device that can hunt leak to membrane electrode exactly again fast, with quality and the production efficiency of guaranteeing membrane electrode.
Vacuum leak detector is used in the leak detection of membrane electrode at present more.Publication number is the vacuum leak detector that the Chinese patent of CN1789944 discloses a kind of fuel cell membrane electrode, it comprises frame, mobile intermediate plate, cylinder, the fixed test plate, the motion detection plate, vacuum meter and stopcock, during detection membrane electrode is fixed in the motion detection plate with the corresponding O RunddichtringO of the peripheral nonactive sealing area shape of membrane electrode on, make membrane electrode on the motion detection plate just in time be positioned at the corresponding O RunddichtringO of the peripheral nonactive sealing area shape of membrane electrode below on the fixed test plate by detent mechanism, to move on the motion detection plate then, corresponding the coincideing of the O-ring seal of check-out console is clipped in the middle membrane electrode up and down, take out the air between striping electrode and the fixed test plate then, and make vacuum tightness reach the 1mm mercury column, again stopcock cuts out, whether change by the pressure of observing on the vacuum meter, judge whether membrane electrode leaks gas.The membrane electrode disrepair phenomenon that causes because of vacuum tightness is excessive can appear in this device in use, and upper-lower seal circle butt joint degree of agreement has deviation will cause flase drop slightly.
The utility model content
The purpose of this utility model provides a kind of leak locator of fuel cell membrane electrode of can be quickly and accurately membrane electrode being hunted leak, with quality and the production efficiency of guaranteeing membrane electrode.
Its concrete technical scheme is as follows: a kind of leak locator of fuel cell membrane electrode, comprise frame, go up check-out console and following check-out console, the described check-out console of going up is connected with the motor movement device by insulating material, described motor movement device is located at described frame inside, and the following check-out console that described lower end links to each other with insulating material is located on the pedestal; The described instrument that is provided with measuring voltage up and down between the check-out console.
Described motor movement device comprises motor, endless screw apparatus and gear, wherein said endless screw apparatus is connected with motor by gear, and described endless screw apparatus is connected with last check-out console by insulating material, is provided with torque sensor between described gear and the motor.
Described motor movement device also comprises chronotron and the oscillator that is connected with motor, and wherein said chronotron is used to control the operation of motor, and described oscillator is used to control motor and reverses.
Described upper and lower check-out console is connected with the both positive and negative polarity of constant-current supply respectively, and is provided with power switch in the circuit, and it is located on the frame, is used to control entire circuit.
Also be provided with gauge tap on the described frame, itself and motor are connected in series, and are used to control moving up and down of check-out console.
Described going up between check-out console and the motor movement device also is provided with universal shaft, and when last check-out console moved downward on the following check-out console that malleation is being placed with membrane electrode, universal shaft connected that contacting of check-out console and following check-out console pushed is more even tight.
The described check-out console of going up is to be made by common conductive material with following check-out console.
Described insulating material can be a kind of in teflon, rubber, phenolics, pottery, the glass.
Electric current＜the 1.5mA of described constant-current supply, the voltage＜1.5V at membrane electrode two ends prevents because the excessive membrane electrode that causes of voltage is impaired.
Compared with prior art, the leak locator of fuel cell membrane electrode of the present utility model can be hunted leak to membrane electrode quickly and accurately, does not damage membrane electrode in the leak detection process, for the quality of production and the production efficiency of guaranteeing membrane electrode provides effective guarantee.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of the utility model fuel battery membrane electrode leak detector critical piece;
Fig. 2 is the course of work synoptic diagram of the utility model fuel battery membrane electrode leak detector;
Fig. 3 is the three-dimensional structure diagram of the utility model fuel battery membrane electrode leak detector;
Fig. 4 is the circuit diagram of the utility model fuel battery membrane electrode leak detector.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail, but is not limited to the content of present embodiment.
As Fig. 1, Fig. 3 or shown in Figure 4, a kind of leak locator of fuel cell membrane electrode, comprise frame 6, go up check-out console 4 and following check-out console 5, the described check-out console 4 of going up is connected with the motor movement device by insulating material 10, described motor movement device is located at described frame 6 inside, described check-out console 5 down is located on the pedestal 12, and its lower end links to each other with insulating material 10; The described instrument 9 that is provided with measuring voltage up and down between the check-out console.
Described motor movement device comprises motor 1, endless screw apparatus 3 and gear 2, wherein said endless screw apparatus 3 is connected with motor 1 by gear 2, and described endless screw apparatus 3 is connected with last check-out console 4 by insulating material 10, is provided with torque sensor 11 between described gear 2 and the motor 1; Described motor movement device also comprises chronotron and the oscillator that is connected with motor 1.
Described upper and lower check-out console is connected with the both positive and negative polarity of constant-current supply 13 respectively, and is provided with power switch 8 in the circuit, and it is located on the frame 6; Also be provided with gauge tap 7 on the described frame 6, itself and motor 1 are connected in series; Described going up between check-out console 4 and the motor movement device also is provided with universal shaft 14, when last check-out console 4 moved downward on the following check-out console 5 that malleation is being placed with membrane electrode, universal shaft 14 connected that check-out console 4 and contacting of following check-out console 5 are pushed is more even tight.
Gear 2 and endless screw apparatus 3 are rotated, and check-out console 4 move downward on driving, and check-out console 4 just is being pressed on down on the check-out console 5; By the moment of torsion control to motor 1, last check-out console 4 is pushed down membrane electrode and is detected, after membrane electrode is pressed onto certain force value by last check-out console, torque sensor 11 changes, motor 1 stop motion simultaneously, the state of membrane electrode is pushed down in maintenance, under the control of chronotron, motor stops 60s and begins counter-rotating, under the control of oscillator, motor rotation 10s, last check-out console moves upward, stop after getting back to initial position, check-out console separately up and down.
The described check-out console of going up is to be made by common conductive material with following check-out console; Described insulating material is a kind of in teflon, rubber, phenolics, pottery, the glass.
Electric current＜the 1.5mA of described constant-current supply, the voltage＜1.5V at membrane electrode two ends.
The course of work of the utility model fuel battery membrane electrode leak detector and principle of work are described as follows in conjunction with Fig. 1, Fig. 2, Fig. 3 or Fig. 4:
At first fuel cell membrane electrode A is positioned over down on the check-out console 5, open the gauge tap 7 of motor 1 then, motor 1, gear 2 and endless screw apparatus 3 drive upward, and check-out console 4 moves downward, just be pressed on down on the check-out console 5, after treating system stability, power switch 8 about opening in the check-out console circuit, giving up and down, the check-out console two ends apply certain voltage.Because PEM is an insulator, if the PEM among the membrane electrode A is intact, then can be regarded as capacitor between the check-out console up and down, can be regarded as the charging process of capacitor behind the power-on switch 8, in 60 seconds time, the registration of the instrument 9 of measuring voltage should constantly increase; If the PEM breakage among the membrane electrode A, but two conductive materials that then are clipped in the film two sides just can contact with each other, at this moment, the membrane electrode A of check-out console and its clamping can regard conventional, electric-resistance as up and down, behind the power-on switch 8, in the time of 60s, the registration of the instrument 9 of measuring voltage should keep a numerical value constant substantially.By chronotron control, after motor stopped 60s, motor began counter-rotating, and by the control of oscillator, behind the motor counter-rotating 10s, last check-out console is got back to initial position, and so far a membrane electrode detects and finishes.Can change according to the registration of the instrument 9 of measuring voltage thus and accurately judge whether breakage of membrane electrode.
Claims (6)
1. the leak locator of a fuel cell membrane electrode, comprise frame (6), go up check-out console (4) and following check-out console (5), it is characterized in that the described check-out console (4) of going up is connected with the motor movement device by insulating material (10), described motor movement device is located at frame (6) inside, and the lower end is connected with the following check-out console (5) of insulating material (10) and is located on the pedestal (12); The described instrument (9) that is provided with measuring voltage up and down between the check-out console.
2. the leak locator of fuel cell membrane electrode according to claim 1, it is characterized in that described motor movement device comprises motor (1), endless screw apparatus (3) and gear (2), wherein said motor (1) is located on the dividing plate of described frame inside, described endless screw apparatus (3) is connected with motor (1) by gear (2), and described endless screw apparatus (3) is connected with last check-out console (4) by insulating material (10), is provided with torque sensor (11) between described gear (2) and the motor (1).
3. the leak locator of fuel cell membrane electrode according to claim 2 is characterized in that described motor movement device comprises chronotron and the oscillator that is connected with motor (1).
4. according to the leak locator of claim 1 or 2 or 3 described fuel cell membrane electrodes, it is characterized in that described upper and lower check-out console is connected with the both positive and negative polarity of constant-current supply (13) respectively, and be provided with power switch in the circuit (8)
5. the leak locator of fuel cell membrane electrode according to claim 1 is characterized in that described going up between check-out console (4) and the motor movement device is provided with universal shaft (14).
6. the leak locator of fuel cell membrane electrode according to claim 4 is characterized in that the electric current＜1.5mA of described constant-current supply (13), the voltage＜1.5V at membrane electrode two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203006086U CN201218769Y (en) | 2008-04-22 | 2008-04-22 | Fuel battery membrane electrode leak detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203006086U CN201218769Y (en) | 2008-04-22 | 2008-04-22 | Fuel battery membrane electrode leak detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201218769Y true CN201218769Y (en) | 2009-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203006086U Expired - Lifetime CN201218769Y (en) | 2008-04-22 | 2008-04-22 | Fuel battery membrane electrode leak detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201218769Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713689A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Air leakage detecting method for water-pervious bipolar plate in proton exchange membrane fuel cell stack |
| CN109932132A (en) * | 2017-12-15 | 2019-06-25 | 中国科学院大连化学物理研究所 | A kind of test leakage detection apparatus of fuel cell membrane electrode and application |
| CN113740000A (en) * | 2021-09-04 | 2021-12-03 | 郑州大学 | Hydrogen leakage monitoring device for hydrogen-oxygen fuel cell |
-
2008
- 2008-04-22 CN CNU2008203006086U patent/CN201218769Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713689A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Air leakage detecting method for water-pervious bipolar plate in proton exchange membrane fuel cell stack |
| CN109932132A (en) * | 2017-12-15 | 2019-06-25 | 中国科学院大连化学物理研究所 | A kind of test leakage detection apparatus of fuel cell membrane electrode and application |
| CN109932132B (en) * | 2017-12-15 | 2021-06-08 | 中国科学院大连化学物理研究所 | Testing and leak detecting device for fuel cell membrane electrode and application thereof |
| CN113740000A (en) * | 2021-09-04 | 2021-12-03 | 郑州大学 | Hydrogen leakage monitoring device for hydrogen-oxygen fuel cell |
| CN113740000B (en) * | 2021-09-04 | 2024-03-15 | 郑州大学 | Hydrogen leakage monitoring device for hydrogen-oxygen fuel cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HANERGY SOLAR PHOTOVOLTAIC TECHNOLOGY LIMITED Free format text: FORMER NAME: HANERGY TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100107 Beijing Chaoyang District Anli Road No. 0-A Patentee after: Hanenergy Solar Photovoltaic Technology Co.,Ltd Address before: 102209 Beijing city Changping District town Beiqijia Hongfu Pioneer Park No. 15 hospital Patentee before: Hanergy Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090408 |