CN217766621U - Resistivity testing device for carbon fiber graphite felt - Google Patents
Resistivity testing device for carbon fiber graphite felt Download PDFInfo
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- CN217766621U CN217766621U CN202221772587.4U CN202221772587U CN217766621U CN 217766621 U CN217766621 U CN 217766621U CN 202221772587 U CN202221772587 U CN 202221772587U CN 217766621 U CN217766621 U CN 217766621U
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- supporting seat
- lower supporting
- carbon fiber
- plated copper
- copper plate
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model provides a resistivity test device of carbon fiber graphite felt, includes the fixed bolster, its technical essential is: a lifter with a motor is arranged at the lower part of the fixed bracket, and a liftable lower supporting seat is fixedly arranged at the top of the lifter; an upper supporting seat which is symmetrical to the lower supporting seat is arranged at the upper part of the fixed bracket; c-shaped limiting baffles fixedly connected with the top of the lower supporting seat and the bottom of the upper supporting seat are correspondingly arranged at the top of the lower supporting seat, a circular gold-plated copper plate with a wiring board is horizontally placed on the inner side of each C-shaped limiting baffle, and the wiring board of the circular gold-plated copper plate extends out of the notch of each C-shaped limiting baffle; and the top of the lower supporting seat and the bottom of the upper supporting seat are also vertically and correspondingly provided with an infrared inductor and an infrared receiver. The utility model discloses utilize the lift power compression sample that rises, utilize infrared ray position sensor's sensing distance to confirm the position that the compression stopped, treat the stable direct reading resistivity measured value of data after the compression stops.
Description
Technical Field
The utility model belongs to the technical field of the analysis and test, concretely relates to resistivity test device of carbon fiber graphite felt.
Background
The porous carbon fiber electrode graphite felt is used as an electrode material of the all-vanadium redox flow battery, and provides a reaction site for electrochemical reaction of the all-vanadium redox flow battery, so that the porous carbon fiber electrode graphite felt is required to have high chemical and electrochemical stability, and the service life of the battery can be prolonged. It should also have excellent conductivity to reduce ohmic polarization of the cell during charging and discharging. The ion conduction efficiency in the electrode is closely related to the technical performance, service life and cost of novel energy sources such as fuel cells, metal-air cells, lithium ion batteries and the like, so that the realization of efficient and accurate detection of the conductivity of the porous carbon fiber electrode graphite felt is a key technology for preparing electrode materials and structures.
At present, a resistivity measurement value is read by a laboratory resistivity testing device when the resistance change rate is lower than 5%, and the detection method has difference in practical application of the porous carbon fiber electrode graphite felt, so that the measurement is not consistent with the practice.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a resistivity test device of carbon fiber graphite felt, the laboratory of resistivity detects unanimously with practical application, has solved the not enough of prior art existence.
The utility model discloses a realize through following technical scheme: the utility model provides a resistivity test device of carbon fiber graphite felt, is including the fixed bolster that has the support post, and its technical essential is: a lifter with a motor is arranged at the lower part of the fixed bracket, and a liftable lower supporting seat is fixedly arranged at the top of the lifter; an upper supporting seat which is symmetrical to the lower supporting seat is arranged at the upper part of the fixed bracket; c-shaped limit baffles fixedly connected with the top of the lower supporting seat and the bottom of the upper supporting seat are correspondingly arranged at the top of the lower supporting seat, a circular gold-plated copper plate with a wiring board is horizontally placed at the inner side of each C-shaped limit baffle, and the wiring board of the circular gold-plated copper plate extends out of the notch of each C-shaped limit baffle; the top of the lower supporting seat is provided with an infrared receiver positioned at the outer side of the C-shaped limit baffle, and the bottom of the upper supporting seat is provided with an infrared inductor vertically corresponding to the infrared receiver.
In order to prevent the short circuit formed by the over-close position of the wiring board when measuring the internal resistance, the upper and the lower circular gold-plated copper plates are arranged in a staggered way.
In order to ensure the stability of the lower support seat in the lifting process and prevent the mirror image of the lower support seat from shifting, a lifting limit plate is arranged between the lower support seat and the lifter, and a hole site which is slidably sleeved with the support upright is arranged on the lifting limit plate.
The beneficial effects of the utility model are that:
the utility model discloses a pneumatic pressure lift is replaced to the lift, and the thickness that directly is required to compress by computer end output is sample compression ratio 15%, and the position that the compression stopped is confirmed to the response distance that the lift passes through infrared position inductor, and the compression stops the back and treats that data stabilize and directly read the resistivity measurement value.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
The sequence numbers of the main parts in the figure illustrate that: 1. a fixed mount; 2. an elevator; 3. a lifting limit plate; 4. a lower support seat; 5. an upper support base; 6. a C-shaped limit baffle; 7. a circular gold-plated copper plate; 701. a wiring board; 8. an infrared receiver; 9. an infrared sensor.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Detailed Description
The present invention will be described in detail with reference to fig. 1 by way of specific examples.
Examples
This resistivity testing arrangement of carbon fiber graphite felt, including the fixed bolster that has the support post, wherein: the lower part of the fixed bracket is provided with a lifter with a motor, and the motor is a 86BYG250C-14 motor of core grinding technology; a liftable lower supporting seat is fixedly arranged at the top of the lifter; in order to ensure the stability of the lower support seat in the lifting process and prevent the mirror image of the lower support seat from shifting, a lifting limit plate is arranged between the lower support seat and the lifter, and a hole site which is slidably sleeved with the support upright is arranged on the lifting limit plate. An upper supporting seat which is symmetrical to the lower supporting seat is arranged at the upper part of the fixed bracket; the top of the lower supporting seat and the bottom of the upper supporting seat are horizontal planes, and are correspondingly provided with C-shaped limiting baffles fixedly connected with the lower supporting seat, and the C-shaped limiting baffles are used for preventing a sample from radially moving in a test; a circular gold-plated copper plate with a wiring board is horizontally placed on the inner side of the C-shaped limiting baffle, the wiring board of the circular gold-plated copper plate extends out of the notch of the C-shaped limiting baffle, and the extended wiring board avoids interference when a measuring clamp is connected; in order to prevent the short circuit formed by the position of the wiring board when the internal resistance is measured, the upper circular gold-plated copper plate and the lower circular gold-plated copper plate are arranged in a staggered mode. The top of the lower supporting seat is provided with an infrared receiver positioned at the outer side of the C-shaped limit baffle, and the bottom of the upper supporting seat is provided with an infrared sensor vertically corresponding to the infrared receiver; the infrared sensor and the infrared receiver are used for testing the distance between the infrared sensor and the infrared receiver and transmitting and receiving instruction signals.
The utility model is used with a computer and corresponding software, and the software can input sample number, detection date, temperature, humidity and sample thickness; the elevator outputs dynamic instructions through computer software, executes the instructions, and feeds back the instruction completion condition through the infrared sensor; after the detection is finished, a computer can automatically form a detection report, and the content of the detection report comprises a sample number, detection date, temperature, humidity, sample thickness and resistivity.
The utility model discloses a working process as follows:
three circular carbon fiber graphite felt samples with the diameters of 50mm are prepared, the average thickness of the samples is measured, measuring clamps of the internal resistance tester are respectively clamped on a wiring board of a circular gold-plated copper plate, and the resistivity testing device is adjusted to be in a to-be-tested mode, namely, a lower supporting seat is positioned at the lower part of a fixed support.
The method comprises the steps of placing 1 sample at the center of a circular gold-plated copper plate on a lower supporting seat, setting a sensing distance between an infrared receiver and an infrared sensor, starting a lifter, automatically stopping rising after the lifter drives the lower supporting seat to rise for the set sensing distance, namely, stopping rising after the lower supporting seat is compressed to 85% of the thickness of an original sample, recording data after a resistance to be measured is stable, and recording the resistance R1 tested by an internal resistance tester and the thickness d1 unit mm of the sample after the sample is compressed by 15%.
Readjusting the resistivity testing device to a mode to be tested, superposing 2 samples on the center position of a circular gold-plated copper plate on a lower supporting seat, resetting the sensing distance between an infrared receiver and an infrared sensor, starting a lifter, automatically stopping rising when the lifter drives the lower supporting seat to rise for the set sensing distance, namely, compressing the samples to 85% of the thickness of the original sample, then stopping rising, and recording data after the resistance to be tested is stable, wherein the data is recorded by the resistance R2 tested by a resistance tester and the thickness d2 of the 2-layer sample after being compressed by 15%;
the two values of the sheet resistance and the resistivity related in the detection report cover the calculation formula which needs to be input when the computer software is programmed, and the calculation formula comprises the following steps:
R3=（R1*d2-R2*d1）/（d2-d1）
ρ=（R1-R3）*S/d1
r1-resistance in the thickness direction of the single-layer sample, bulk resistance of the measuring electrode, contact resistance between the sample and two measuring electrodes, and unit milliohm (m omega);
r2-2 layer sample resistance in the thickness direction at this time, bulk resistance of the measuring electrode, contact resistance between the sample and two measuring electrodes, in milliohms (m Ω);
d 1-thickness in centimeters (cm) of 15% compression of the monolayer sample;
d 2-thickness of 15% compression of the layer sample in centimeters (cm);
r3-2 sum of electrode bulk resistance, contact resistance between sample and two measurement electrodes, in milliohms (m Ω);
s-area of round sample π r 2 I.e., a constant value of 19.625;
ρ -resistivity in milliohms cm (m Ω cm) in the thickness direction of the sample;
the detailed test data are compared as follows:
table i, new and old resistivity testing device testing data
According to the testing data can be seen, the utility model discloses an electrical resistivity obviously is greater than old type resistivity testing arrangement's electrical resistivity, explains the utility model discloses the light of compression, the hole of carbon fiber is normal, does not cause destruction to the fibre of carbon fiber and hole, compensaties the test error that detects and practical application exist simultaneously.
The utility model discloses a pneumatic pressure lift is replaced to the lift, and the direct thickness that is the sample compression ratio 15% that is arrived by the required compression of computer end output, the position that the compression stopped is confirmed to the response distance that the lift passes through infrared ray position sensor, and the compression stops the back and treats that data stability directly reads the resistivity measurement value.
Claims (3)
1. The utility model provides a resistivity testing arrangement of carbon fiber graphite felt, includes the fixed bolster that has the support post, its characterized in that: a lifter with a motor is arranged at the lower part of the fixed bracket, and a liftable lower supporting seat is fixedly arranged at the top of the lifter; an upper supporting seat which is symmetrical to the lower supporting seat is arranged at the upper part of the fixed bracket; c-shaped limiting baffles fixedly connected with the top of the lower supporting seat and the bottom of the upper supporting seat are correspondingly arranged at the top of the lower supporting seat, a circular gold-plated copper plate with a wiring board is horizontally placed on the inner side of each C-shaped limiting baffle, and the wiring board of the circular gold-plated copper plate extends out of the notch of each C-shaped limiting baffle; the top of the lower supporting seat is provided with an infrared receiver positioned at the outer side of the C-shaped limit baffle, and the bottom of the upper supporting seat is provided with an infrared inductor vertically corresponding to the infrared receiver.
2. The resistivity testing device of the carbon fiber graphite felt according to claim 1, characterized in that: the upper round gold-plated copper plate and the lower round gold-plated copper plate are arranged in a staggered mode.
3. The resistivity testing device of the carbon fiber graphite felt according to claim 1, characterized in that: a lifting limit plate is arranged between the lower supporting seat and the lifter, and a hole site which is slidably sleeved with the supporting upright post is arranged on the lifting limit plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221772587.4U CN217766621U (en) | 2022-07-11 | 2022-07-11 | Resistivity testing device for carbon fiber graphite felt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221772587.4U CN217766621U (en) | 2022-07-11 | 2022-07-11 | Resistivity testing device for carbon fiber graphite felt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217766621U true CN217766621U (en) | 2022-11-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221772587.4U Active CN217766621U (en) | 2022-07-11 | 2022-07-11 | Resistivity testing device for carbon fiber graphite felt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217766621U (en) |
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2022
- 2022-07-11 CN CN202221772587.4U patent/CN217766621U/en active Active
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