CN220136293U - Diaphragm covers off-line check out test set - Google Patents
Diaphragm covers off-line check out test set Download PDFInfo
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- CN220136293U CN220136293U CN202320650446.3U CN202320650446U CN220136293U CN 220136293 U CN220136293 U CN 220136293U CN 202320650446 U CN202320650446 U CN 202320650446U CN 220136293 U CN220136293 U CN 220136293U
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- light source
- glass platform
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- diaphragm
- glass
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- 239000011521 glass Substances 0.000 claims abstract description 91
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 239000012528 membrane Substances 0.000 claims description 15
- 238000013016 damping Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims 9
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 21
- 238000005259 measurement Methods 0.000 description 17
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012982 microporous membrane Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The utility model discloses a diaphragm coverage off-line detection device, which comprises: a glass platform for placing a diaphragm is arranged in the machine body; the light source module is spanned in the width direction of the glass platform and is fixed with the machine body through a rotating shaft, and the light source module rotates along the rotating shaft to enable the light emitted by the light source module to irradiate in the width direction of the glass platform at an inclined angle; the multi-axis truss is erected in the machine body, a camera is arranged on the multi-axis truss, and the camera moves right above the glass platform through the multi-axis truss and shoots towards the direction of the glass platform so as to obtain an image for analyzing the coverage rate of the diaphragm. According to the utility model, the camera is driven to move right above the glass platform by the multi-axis truss, and meanwhile, the diaphragm on the glass platform is illuminated by the light source, so that the automatic detection effect is realized, and the detection efficiency is improved.
Description
Technical Field
The utility model relates to the field of visual detection equipment, in particular to diaphragm coverage off-line detection equipment.
Background
The diaphragm is an important component of the lithium ion battery, is a microporous membrane for separating positive and negative pole pieces, and is a polymer functional material with a nanoscale microporous structure. Its main function is to prevent the contact of the two poles from short-circuiting while allowing electrolyte ions to pass through. The performance determines the interface structure, internal resistance and the like of the battery, and directly influences the capacity, circulation and safety performance of the battery. The porosity of the battery diaphragm, also called the diaphragm coverage rate, also affects the performance of the battery, but the traditional detection method lacks visual detection equipment for detecting the diaphragm coverage rate, and cannot improve the battery detection efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the diaphragm covering off-line detection equipment which can improve the detection efficiency of the battery diaphragm.
The utility model adopts the following technical scheme:
a membrane covered off-line detection apparatus comprising:
a glass platform for placing a diaphragm is arranged in the machine body;
the light source module is spanned in the width direction of the glass platform and is fixed with the machine body through a rotating shaft, and the light source module rotates along the rotating shaft to enable the light emitted by the light source module to irradiate in the width direction of the glass platform at an inclined angle;
the multi-axis truss is erected in the machine body, a camera is arranged on the multi-axis truss, and the camera moves right above the glass platform through the multi-axis truss and shoots towards the direction of the glass platform so as to obtain an image for analyzing the coverage rate of the diaphragm.
Further, a glass cover is further arranged on the glass platform, and the glass cover is placed on the diaphragm and is used for fixing the diaphragm between the glass cover and the glass platform.
Further, the side edge of the glass cover is connected with the glass platform by adopting a damping hinge, so that the glass cover can realize opening and closing movement.
Further, the damping hinge is set as a limiting hinge and is used for limiting the moving range of the glass cover; the glass cover and the glass platform remain horizontal when the limit hinge is moved to a minimum angle.
Further, the multi-axis truss comprises a truss driving motor, an X-axis frame and a Y-axis beam, wherein the Y-axis beam is positioned in the width direction of the glass platform and is movably connected with the X-axis frame; the camera is arranged on the Y-axis beam, and the Y-axis beam is driven by the driving motor to reciprocate along the X-axis frame.
Further, the camera moves along the Y-axis beam and moves to a designated position of the Y-axis beam so that the shooting range of the camera covers the glass platform.
Further, the light source module is provided with a light source driving motor for driving the light source module to rotate along an axis so as to change the angle of light rays emitted to the glass platform by the light source module.
Further, the light source driving motor drives the light source module to rotate along the axis, so that the normal line of the light rays emitted to the glass platform by the light source module always coincides with the shooting direction of the camera.
Further, a safety grating is arranged on one side surface of the machine body.
Further, the other side surface of the machine body is provided with an opening and closing door plate.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the camera is driven to move right above the glass platform by the multi-axis truss, and meanwhile, the diaphragm on the glass platform is illuminated by the light source, so that the automatic detection effect is realized, and the detection efficiency is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a detection device according to the present utility model;
FIG. 2 is a schematic diagram of the structure of the detecting device (with the upper body hidden);
FIG. 3 is a schematic diagram of the front structure of the detecting device of the present utility model;
FIG. 4 is a schematic flow chart of the operation of the detecting device of the present utility model.
In the figure: 1. a body; 2. a glass platform; 3. damping hinges; 4. a light source module; 5. a truss driving motor; 6. an X-axis frame; 7. a Y-axis beam; 8. a camera; 9. a security grating.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and detailed description, wherein it is to be understood that, on the premise of no conflict, the following embodiments or technical features may be arbitrarily combined to form new embodiments.
The embodiment provides a diaphragm coverage off-line detection device for detecting diaphragm coverage. The detection equipment comprises a machine body 1, a light source module 4, a multi-axis truss and a camera 8; as shown in fig. 1, a safety grating 9 is disposed on one side of the machine body 1, and an opening and closing door plate is disposed on the other side of the machine body 1, wherein the safety grating 9 can be disposed on an equipment operation surface for protecting an operator; the door panel is removable and can be directly removed when not needed later because the door panel is kept to prevent dust from entering the device in consideration of the service cycle of the device. In addition, a glass platform 2 is arranged in the machine body 1, and a diaphragm is placed on the glass platform 2.
In this embodiment, in order to better fix the diaphragm, a layer of glass cover may be further covered on the glass platform 2, so that the diaphragm is clamped between the glass platform 2 and the glass cover, and when the diaphragm on the front surface of the diaphragm needs to be detected, the front surface of the diaphragm is clamped between the glass platform 2 and the glass cover; if the membrane on the opposite side of the membrane is to be tested, the opposite side of the membrane is clamped up between the glass platform 2 and the glass cover.
In order to better move the glass cover, as shown in fig. 2, the glass cover may be connected to the glass platform 2 through a damping hinge 3, and the glass cover may be driven to realize opening and closing movement under the action of the hinge. In addition, the damping hinge 3 can also be a limiting hinge with a limiting function, and is used for limiting the moving range of the glass cover; when the limiting hinge moves to a maximum angle, the glass cover is far away from the glass platform 2, so that the diaphragm on the glass platform 2 can be adjusted and replaced; the glass cover and the glass platform 2 remain horizontal when the limit hinge is moved to a minimum angle, thereby limiting the membrane between the glass cover and the glass platform 2.
The diaphragm is placed on glass platform 2 by artifical level, then covers glass, and glass size is 600 by 700 by 10mm, and glass adopts damping hinge 3 to connect, takes mechanical spacing to prevent glass collision, places and starts equipment after leveling.
The equipment is also provided with a light source module 4 and a multi-axis truss, wherein the light source module 4 comprises a light source body and a light source bracket, and the light source body is fixed on the machine body 1 through the light source bracket so as to transversely span the width direction of the glass platform 2; meanwhile, a rotating shaft is further arranged on the light source support, and the light source body is connected with the rotating shaft, so that the light source body can rotate along the rotating shaft to enable light emitted by the light source body to irradiate on the width direction of the glass platform 2 at an inclined angle.
The machine body 1 is also internally provided with a multi-axis truss, in this embodiment, the multi-axis truss comprises a truss driving motor 5, an X-axis frame 6 and a Y-axis beam 7, and the Y-axis beam 7 is positioned in the width direction of the glass platform 2 and is movably connected with the X-axis frame 6; the camera 8 is mounted on the Y-axis beam 7, and the camera 8 can move back and forth along the Y-axis beam 7, so that the camera 8 stays at a designated position of the Y-axis beam 7 in the moving process of the camera 8 along the Y-axis beam 7, and the shooting width of the camera 8 is ensured to cover the glass platform 2, so that the diaphragm on the glass platform 2 can be completely shot to form an image.
Meanwhile, the Y-axis beam 7 is driven by the driving motor to move back and forth along the X-axis frame 6, so that the camera 8 can move right above the glass platform 2 and shoot towards the glass platform 2.
The detection device of the embodiment further comprises a controller, wherein the controller is connected with the truss driving motor 5, the camera 8 and the light source module 4, and is used for controlling the movement of the camera 8, analyzing the coverage rate of the image collected by the camera 8, and controlling the light source condition of the light source module 4.
In some embodiments, the light source module 4 is further provided with a light source driving motor for driving the light source module 4 to rotate along an axis, so as to change the angle of the light emitted by the light source module 4 to the glass platform 2. In order to better scan a clear diaphragm image, the rotation angle of the light source body and the position of the camera 8 on the glass platform 2 can be coordinated by the controller, so that the normal line of the light emitted by the light source module 4 to the glass platform 2 always coincides with the shooting direction of the camera 8, as shown in fig. 3, the downward shooting direction of the camera 8 in fig. 3 coincides with the normal line of the light beam emitted by the light source module 4, and therefore the shooting quality is improved.
As shown in fig. 4, the detection starts after the device is started, the device encoder counts and photographs, performs preprocessing on the image to divide the discrimination area, and then performs image analysis on the discrimination area to obtain a detection result.
The principle of the membrane coverage detection performed by the device in this embodiment is as follows:
acquiring a measurement area image, identifying particles in the measurement area image and calculating the area of each particle; the measurement area image is obtained by shooting through a camera 8 which is opposite to the diaphragm;
and counting the sum of the areas of all the particles in each channel in the measurement area image, calculating the proportion between the sum of the areas of all the particles in each channel and the area of each channel in the measurement area image to obtain coverage rate, displaying each coverage rate data of the measurement area image in a partition mode, and carrying out alarm prompt on abnormal coverage rate data.
Since the diaphragm is fixed by the glass with the damping hinge 3, the camera 8 may photograph objects other than the diaphragm such as the hinge at the same time when photographing the diaphragm, and thus the measurement area image photographed by the camera 8 is preprocessed to remove the area other than the diaphragm in the image. Specifically, extracting a dark area with gray level lower than a second preset value in the measurement area image, wherein the value of the second preset value can be preset, eliminating the dark area in the measurement area image, and not identifying particles.
After removing dark areas from the measurement area image, carrying out particle recognition on the rest image, and amplifying the measurement area image according to preset amplification factors before recognition, wherein the amplified image can show small particles, and the colors of the small particles in the image are obviously different from the ground colors of the image, so that the amplified areas with the brightness higher than a first preset value in the measurement area image are extracted, and each area with the brightness higher than the first preset value is marked as particles, so that all the particles in the image are recognized.
For the whole measurement area image, the ratio of the sum of the areas of all particles in the whole image to the image area, i.e. the coverage rate, is taken as the coverage rate. In order to perform the partition real-time coverage detection on the image, the image is divided into a plurality of channels in advance.
The user can preset the custom parameters, and after the system acquires the custom parameters, the measurement area image is divided into a plurality of transverse or longitudinal channels according to the custom parameters; the custom parameters comprise channel trend and channel width, wherein the channel trend comprises transverse direction and longitudinal direction; dividing the image size of the measurement region image into a plurality of transverse or longitudinal regions according to the channel width set by user definition, and respectively judging the coverage rate in each channel in an abnormal manner.
In this embodiment, the method for judging coverage rate data abnormality for each channel includes:
randomly selecting the specified number of particles in the channel, calculating the area average value of all the selected particles, comparing the areas of the rest particles in the channel with the area average value, and if the comparison difference is larger than a third preset value, carrying out alarm prompt on the position corresponding to the particles in the measurement area image; wherein the third preset value may be preset.
Meanwhile, the method for judging coverage rate data abnormality of each channel further comprises the following steps:
screening out particles with the largest area and particles with the smallest area in each channel, and subtracting the particle area with the largest area from the particle area with the smallest area, so as to calculate the extremely bad; if the range of any channel is larger than a fourth preset value, generating a corresponding alarm prompt; wherein the fourth preset value can also be preset.
After the front diaphragm is detected, taking the diaphragm out of the glass platform 2 of the device, turning the diaphragm upwards to enable the reverse side of the diaphragm to be upwards, placing the diaphragm on the glass platform 2 again, covering a glass cover, placing the diaphragm flatly, and restarting the device; at the moment, the camera 8 shoots an image of a measuring area on the reverse side of the diaphragm, coverage rate detection is carried out on the reverse side of the diaphragm by using equipment, reverse side coverage rate data are obtained, and abnormality judgment and display are carried out on the reverse side coverage rate data.
According to the embodiment, the particles and the areas of the diaphragm are automatically identified through the visual detection system, the coverage rate of the diaphragm is calculated through the ratio of the sum of the areas of all the particles to the area of the measurement area, and the detection result is displayed on the display, so that automatic detection is realized, and the detection accuracy is improved.
The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.
Claims (10)
1. A membrane covered off-line inspection apparatus, comprising:
a glass platform for placing a diaphragm is arranged in the machine body;
the light source module is spanned in the width direction of the glass platform and is fixed with the machine body through a rotating shaft, and the light source module rotates along the rotating shaft to enable the light emitted by the light source module to irradiate in the width direction of the glass platform at an inclined angle;
the multi-axis truss is erected in the machine body, a camera is arranged on the multi-axis truss, and the camera moves right above the glass platform through the multi-axis truss and shoots towards the direction of the glass platform so as to obtain an image for analyzing the coverage rate of the diaphragm.
2. The membrane covered off-line inspection apparatus of claim 1, wherein a glass cover is further mounted on the glass platform, the glass cover being placed on the membrane for securing the membrane between the glass cover and the glass platform.
3. The membrane covered off-line inspection apparatus of claim 2, wherein the glass cover has sides connected to the glass platform with damped hinges to allow the glass cover to open and close.
4. A diaphragm cover off-line inspection apparatus according to claim 3, wherein the damping hinge is provided as a limit hinge for limiting the range of motion of the glass cover; the glass cover and the glass platform remain horizontal when the limit hinge is moved to a minimum angle.
5. The diaphragm coverage off-line inspection apparatus of claim 1, wherein the multi-axis truss comprises a truss drive motor, an X-axis frame, and a Y-axis beam, the Y-axis beam being located in a width direction of the glass platform and being movably connected to the X-axis frame; the camera is arranged on the Y-axis beam, and the Y-axis beam is driven by the driving motor to reciprocate along the X-axis frame.
6. The membrane coverage off-line inspection apparatus of claim 5, wherein the camera moves along the Y-axis beam and to a designated position of the Y-axis beam such that a shooting range of the camera covers the glass platform.
7. The membrane covered off-line inspection apparatus of claim 1, wherein the light source module is provided with a light source driving motor for driving the light source module to rotate along an axis to change an angle of light emitted from the light source module to the glass platform.
8. The diaphragm coverage off-line detection apparatus according to claim 7, wherein the light source driving motor drives the light source module to rotate along an axis so that a normal line of light rays emitted from the light source module onto the glass platform always coincides with a shooting direction of the camera.
9. The membrane covered off-line inspection apparatus of claim 1, wherein a safety grating is provided on a side of the housing.
10. The membrane covered off-line inspection apparatus of claim 9, wherein the other side of the housing is provided with an openable door panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320650446.3U CN220136293U (en) | 2023-03-28 | 2023-03-28 | Diaphragm covers off-line check out test set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320650446.3U CN220136293U (en) | 2023-03-28 | 2023-03-28 | Diaphragm covers off-line check out test set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220136293U true CN220136293U (en) | 2023-12-05 |
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ID=88956317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320650446.3U Active CN220136293U (en) | 2023-03-28 | 2023-03-28 | Diaphragm covers off-line check out test set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220136293U (en) |
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2023
- 2023-03-28 CN CN202320650446.3U patent/CN220136293U/en active Active
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