Battery piece detection equipment and solar battery production line
By integrating the photoluminescence detection component and the automatic optical detection component into the battery chip detection equipment, the problems of single function and limited detection range of the detection equipment in the existing technology are solved, the comprehensive detection of battery chip defects is realized, and the detection efficiency and accuracy.
Patent Information
- Application Number
- CN202420317319.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-21
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-02-21
AI Technical Summary
In the prior art, the battery cell detection equipment has a single function and cannot fully detect the defects of the battery cell, and the detection range of the automatic optical detection equipment is limited.
Design a battery detection equipment that integrates optical light emitting detection components and automatic optical detection components. By lighting the battery sheet through multiple laser, enhance laser irradiation energy, and combined with automatic optical detection cameras to achieve comprehensive detection of battery defects Essence
The equipment can simultaneously detect defects such as cracks, breakage, scratches, and offsets in battery cells. It solves the problem of single function and limited detection range of the equipment, and improves detection efficiency and accuracy.
Smart Images
Figure CN222393984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery detection equipment, in particular to a battery sheet detection equipment and a solar cell production line. Background Art
[0002] The essence of battery technology iteration is to reduce costs and improve efficiency, and high efficiency and low cost are the direction of development. HJT is the development direction of the new generation of battery technology because of its high photoelectric conversion efficiency, simplified equipment process flow, large space for cost reduction and efficiency improvement, and broad prospects. The HJT battery process mainly includes four links: texturing, amorphous silicon deposition, TCO deposition, and screen printing. Among them, amorphous silicon deposition mainly uses the CVD (chemical vapor deposition) method. The CVD method can be divided into two basic types: open tube airflow method and sealed tube airflow method.
[0003] At present, most solar silicon wafer manufacturers in my country have many quality problems. In the production process, each section is mostly equipped with EL (electroluminescence), PL (photoluminescence), AOI (automatic optical inspection) and other inspection equipment. In the CVD section, there are inevitably defects such as hidden cracks. Among them, PL and AOI are non-contact inspections, which avoid the risk of secondary defects during inspection. At present, such equipment is becoming more and more mature, but a single device is not enough to detect more defects in a section. Utility Model Content
[0004] One purpose of the first aspect of the utility model is to provide a battery cell detection device to solve the problem in the prior art that the single device cannot meet the detection requirements.
[0005] Another object of the first aspect of the present utility model is to solve the problem of increasing the detection range of automatic optical detection equipment.
[0006] An object of the second aspect of the present invention is to provide a solar cell production line.
[0007] In particular, the utility model also provides a cell inspection device, comprising a bracket and at least one group of inspection devices arranged at the bracket, each group of the inspection devices comprising a photoluminescence inspection component and an automatic optical inspection component to detect defects of the cell.
[0008] Optionally, the photoluminescence detection component comprises:
[0009] At least one laser connected to the bracket and capable of moving relative to the bracket; the laser emitted by the laser is directed toward the battery sheet;
[0010] A photoluminescent camera is connected to the bracket and can move relative to the bracket, and is used to take an image of the laser irradiated portion of the battery sheet.
[0011] Optionally, the laser comprises a plurality of lasers, and the power of each laser is 50W to 100W.
[0012] Optionally, the laser irradiates the battery cell obliquely downward.
[0013] Optionally, the laser emitted by the laser is at an angle of 60° to 70° to the horizontal plane.
[0014] Optionally, the automatic optical inspection assembly includes:
[0015] A light emitting device, connected to the support and capable of moving relative to the support, for illuminating the battery sheet;
[0016] An automatic optical inspection camera is connected to the bracket and can move relative to the bracket, and is used to take an image of the portion of the battery sheet illuminated by the light-emitting device.
[0017] Optionally, an adjustment component is further included, and the detection device is connected to the bracket through the adjustment component.
[0018] Optionally, the adjustment assembly includes a first adjustment assembly, the first adjustment assembly includes a first adjustment plate and a second adjustment plate that are movably connected to each other, the second adjustment plate moves translationally in a preset direction relative to the first adjustment plate, the first adjustment plate is connected to the bracket, and the second adjustment plate is connected to the photoluminescent camera so that the photoluminescent camera can move translationally in a preset direction relative to the bracket.
[0019] Optionally, the adjustment component also includes at least one second adjustment component, each of the second adjustment components includes a fourth adjustment plate, a fifth adjustment plate and a sixth adjustment plate connected in sequence, the fourth adjustment plate translates relative to the fifth adjustment plate in the preset direction, the sixth adjustment plate rotates relative to the fifth adjustment plate, the fourth adjustment plate is connected to the bracket, and the sixth adjustment plate is connected to the laser or the automatic optical detection component, so that the laser or the automatic optical detection component can translate relative to the bracket in the preset direction and can rotate relative to the bracket.
[0020] In particular, the utility model also provides a solar cell production line, including the above-mentioned cell detection equipment
[0021] The cell inspection device of the present application integrates a photoluminescence inspection component and an automatic optical inspection component, and can simultaneously detect defects such as hidden cracks, breakages, scratches, and offsets of the cell, solving the problem of single function of the equipment in the prior art.
[0022] The purpose of designing multiple lasers in the photoluminescence detection component of the present application is to enable multiple lasers to irradiate the battery cell at the same time, thereby increasing the laser irradiation energy, and thus better detecting defects inside the battery cell, solving the problem of insufficient energy of a single laser, and increasing the detection range of automatic optical inspection equipment.
[0023] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:
[0025] Figure 1 is a schematic structural diagram of a battery cell detection device according to a specific embodiment of the utility model;
[0026] Figure 2 It is a partial schematic structural diagram of a battery cell detection device according to a specific embodiment of the utility model.
[0027] Description of Reference Numerals
[0028] Cell detection equipment-100; bracket-200; detection device-300; photoluminescence detection component-310; laser-311; photoluminescence camera-312; laser controller-313; automatic optical detection component-320; light-emitting device-321; automatic optical detection camera-322; adjustment component-400; first adjustment component-410; first adjustment plate-411; second adjustment plate-412; first through hole-413; second adjustment component-420; fourth adjustment plate-421; fifth adjustment plate-422; sixth adjustment plate-423; second strip hole-424. DETAILED DESCRIPTION
[0029] In the description of this embodiment, it should be understood that the terms "length", "width", "height", "up", "down", "left", "right", "vertical", "horizontal", "bottom", "inside" and "outside" etc. indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0030] Figure 1is a schematic structural diagram of a battery cell detection device 100 according to a specific embodiment of the utility model; Figure 2 It is a partial schematic structural diagram of a cell inspection device according to a specific embodiment of the utility model. As a specific embodiment of the utility model, this embodiment provides a cell inspection device 100, which may include a bracket 200 and at least one group of inspection devices 300 arranged at the bracket 200, each group of inspection devices 300 may include a photoluminescence inspection component 310 and an automatic optical inspection component 320 to detect defects of the cell.
[0031] In this embodiment, the detection principle of the photoluminescence detection component 310 for the battery cell is to detect the defects of the battery cell by the photoluminescence method. Specifically, the photoluminescence method is that the photoluminescence image is obtained by limiting the imaging field of view to a thin line across the width of the battery cell, and irradiating the laser to the thin line through a laser, and the line scan camera collects the photoluminescence (PL) image. A voltage difference will be formed between the irradiated area and the unirradiated area of the solar cell, causing a lateral current to flow and emit fluorescence. Since the conductivity and energy level of the defective area and the normal area are different, the degree of fluorescence emitted by the defective area is darker. Therefore, the defective battery cell can be identified based on the fluorescence intensity displayed by the PL image. The photoluminescence detection component 310 can detect defects inside the battery cell.
[0032] The automatic optical inspection component 320 of this embodiment detects defects of the battery cell by an automatic optical inspection method. The specific automatic optical inspection method is based on optical principles to detect common defects encountered in battery cell production, obtains the surface state of the battery cell by optical means, and detects surface damage and other defects by image processing. This method has the advantages of low environmental requirements, clear imaging, and high detection efficiency. The automatic optical inspection component 320 of this embodiment can detect defects on the surface of the battery cell.
[0033] Specifically, the appendix of this embodiment Figure 1 The cell inspection device 100 is provided with two groups of inspection devices 300, and each group of inspection devices 300 can detect defects of the cell individually or together. Of course, in other embodiments, the cell inspection device 100 can also include more groups of inspection devices 300. Multiple groups of inspection devices 300 can all detect defects of the cell individually or together.
[0034] Specifically, the cell inspection device 100 of this embodiment integrates a photoluminescence inspection component 310 and an automatic optical inspection component 320, and can simultaneously inspect defects such as hidden cracks, breakages, scratches, and offsets of the cell, thus solving the problem of single function of the device in the prior art.
[0035] As a specific embodiment of the utility model, the photoluminescence detection assembly 310 of this embodiment may include at least one laser 311 and a photoluminescence camera 312. Among them, at least one laser 311 is connected to the bracket 200 and can move relative to the bracket 200. The laser emitted by the laser 311 is directed toward the battery cell to irradiate the battery cell. The photoluminescence camera 312 is connected to the bracket 200 and can move relative to the bracket 200 to capture an image of the laser 311 irradiated portion of the battery cell.
[0036] Specifically, in this embodiment, the laser 311 is used to irradiate the cell, and the photoluminescence camera 312 takes a picture of the irradiated part, so as to obtain image information of the part of the cell irradiated by the laser 311, and by processing the image (stretching, cropping, sharpening, etc.), it can be determined whether there are defects on the cell. Of course, a laser controller 313 is also provided at the laser 311, and the action of the laser 311 is controlled by the laser controller 313.
[0037] As a specific embodiment of the present invention, the laser 311 of this embodiment may include multiple lasers, for example, the number of lasers 311 in this embodiment is 2. The power of each laser 311 is 50W to 100W. For example, in this embodiment, the power of one laser 311 is 50W, and the power of the other laser 311 is 90W.
[0038] The purpose of designing multiple lasers 311 in this embodiment is to enable multiple lasers 311 to irradiate the battery cell at the same time, thereby increasing the laser irradiation energy, and further enabling better detection of defects inside the battery cell, thereby solving the problem of insufficient energy of a single laser 311 and increasing the detection range of the automatic optical inspection equipment 100.
[0039] As a specific embodiment of the utility model, the laser 311 of this embodiment irradiates the battery cell obliquely downward. The laser emitted by the laser 311 is 60° to 70° with the horizontal plane. For example, the laser emitted by the laser 311 can be at an angle of 60°, 65° or 70° with the horizontal plane. In this embodiment, the oblique irradiation of the laser 311 can facilitate the arrangement of the position of the laser 311, and can also increase the area of the laser irradiation at the battery cell.
[0040] As a specific embodiment of the utility model, the automatic optical detection assembly 320 of this embodiment may include a light emitting device 321 and an automatic optical detection camera 322. The light emitting device 321 is connected to the bracket 200 and can move relative to the bracket 200 to illuminate the battery cell. The automatic optical detection camera 322 is connected to the bracket 200 and can move relative to the bracket 200 to capture an image of the portion of the battery cell illuminated by the light emitting device 321.
[0041] The automatic optical inspection assembly 320 of this embodiment illuminates the cell through the light emitting device 321, so that the automatic optical inspection camera 322 can take clearer images. The automatic optical inspection camera 322 processes the image taken by the cell to obtain the defects on the surface of the cell.
[0042] As a specific embodiment of the present invention, the battery cell detection device 100 of this embodiment may further include an adjustment component 400 , and the detection device 300 is connected to the bracket 200 via the adjustment component 400 .
[0043] In this embodiment, the detection device 300 and the bracket 200 are connected by the adjustment component 400, so that the relative position between the detection device 300 and the bracket 200 can be adjusted, so as to be compatible with different workstations and different conditions, thereby improving the compatibility of the detection device 300.
[0044] As a specific embodiment of the present utility model, the adjustment component 400 of this embodiment may include a first adjustment component 410, and the first adjustment component 410 may include a first adjustment plate 411 and a second adjustment plate 412 which are movably connected to each other, and the second adjustment plate 412 moves in a preset direction relative to the first adjustment plate 411, and the first adjustment plate 411 is connected to the bracket 200, and the second adjustment plate 412 is connected to the photoluminescent camera 312 so that the photoluminescent camera 312 can move in a preset direction relative to the bracket 200.
[0045] Specifically, in this embodiment, the first adjustment plate 411 is detachably connected to the bracket 200, and the relative position of the first adjustment plate 411 and the bracket 200 can be adjusted as needed, and after adjustment, they are fastened and connected using fasteners. The relative position between the first adjustment plate 411 and the second adjustment plate 412 can also be adjusted. Generally speaking, the preset direction of this embodiment is the vertical direction. One of the embodiments is to set a strip-shaped first through hole 413 at the first adjustment plate 411 or the second adjustment plate 412, and then fasten them with fasteners after adjusting the relative position of the first adjustment plate 411 and the second adjustment plate 412 as needed. Of course, the movement of the first adjustment plate 411 relative to the second adjustment plate 412 can also be electrically adjusted using components such as cylinders, which can save manpower and improve accuracy.
[0046] As a specific embodiment of the utility model, the adjustment component 400 of this embodiment may also include at least one second adjustment component 420, each second adjustment component 420 may include a fourth adjustment plate 421, a fifth adjustment plate 422 and a sixth adjustment plate 423 connected in sequence, the fourth adjustment plate 421 moves horizontally in a preset direction relative to the fifth adjustment plate 422, the sixth adjustment plate 423 rotates relative to the fifth adjustment plate 422, the fourth adjustment plate 421 is connected to the bracket 200, and the sixth adjustment plate 423 is connected to the laser 311 or the automatic optical detection component 320, so that the laser 311 or the automatic optical detection component 320 can move horizontally in a preset direction relative to the bracket 200 and can rotate relative to the bracket 200.
[0047] In this embodiment, the second adjustment assembly 420 may include three, two of which are connected to a laser 311 respectively, and the other is connected to the automatic optical detection assembly 320. And similarly, the fourth adjustment plate 421 of the second adjustment assembly 420 is detachably connected to the bracket 200, and is fastened with fasteners after the position is fixed. The fourth adjustment plate 421 and the fifth adjustment plate 422 can also move relative to each other in the vertical direction. A second strip hole 424 extending in the vertical direction is provided on the fourth adjustment plate 421 or the fifth adjustment plate 422, which can be adjusted manually or electrically using components such as a cylinder. The fifth adjustment plate 422 and the sixth adjustment plate 423 can be rotated to ensure that the laser 311 or the automatic optical detection assembly 320 can adjust the angle.
[0048] As a specific embodiment of the utility model, the fourth adjustment plate 421 of this embodiment is movably connected to the bracket 200, so that the fourth adjustment plate 421 moves in a direction perpendicular to the preset direction relative to the bracket 200. Specifically, a strip-shaped through hole can be set at the bracket 200, and the fourth adjustment plate 421 is fastened with a fastener after the position is adjusted. Of course, the fourth adjustment plate 421 can also be adjusted by other components, such as a screw assembly.
[0049] As a specific embodiment of the utility model, this embodiment also provides a solar cell production line, and the solar cell production line includes the above-mentioned cell detection equipment.
[0050] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.
Claims
1. A battery cell testing device, characterized in that: It comprises a support and at least one group of detection devices arranged at the support, each group of the detection devices comprises a photoluminescence detection component and an automatic optical detection component to detect defects of the battery sheet; Wherein, the photoluminescence detection component comprises: At least one laser connected to the bracket and capable of moving relative to the bracket; the laser emitted by the laser is directed toward the battery sheet; A photoluminescent camera connected to the bracket and capable of moving relative to the bracket, for taking an image of the laser irradiated portion of the cell; The automatic optical detection assembly comprises: A light emitting device, connected to the support and capable of moving relative to the support, for illuminating the battery sheet; An automatic optical inspection camera is connected to the bracket and can move relative to the bracket, and is used to take an image of the portion of the battery sheet illuminated by the light-emitting device.
2. The battery cell testing equipment according to claim 1, characterized in that: The laser comprises a plurality of lasers, and the power of each laser is 50W-100W.
3. The battery cell testing equipment according to claim 2, characterized in that: The laser irradiates the battery sheet obliquely downward.
4. The battery cell testing equipment according to claim 3, characterized in that: The laser emitted by the laser is 60° to 70° with the horizontal plane.
5. The battery cell testing device according to any one of claims 1 to 4, characterized in that: It also includes an adjustment component, and the detection device is connected to the bracket through the adjustment component.
6. The battery cell testing equipment according to claim 5, characterized in that: The adjustment assembly includes a first adjustment assembly, which includes a first adjustment plate and a second adjustment plate that are movably connected to each other, the second adjustment plate moves in a preset direction relative to the first adjustment plate, the first adjustment plate is connected to the bracket, and the second adjustment plate is connected to the photoluminescent camera so that the photoluminescent camera can move in a preset direction relative to the bracket.
7. The battery cell testing device according to claim 6, characterized in that: The adjustment component also includes at least one second adjustment component, each of the second adjustment components includes a fourth adjustment plate, a fifth adjustment plate and a sixth adjustment plate connected in sequence, the fourth adjustment plate translates relative to the fifth adjustment plate in the preset direction, the sixth adjustment plate rotates relative to the fifth adjustment plate, the fourth adjustment plate is connected to the bracket, and the sixth adjustment plate is connected to the laser or the automatic optical detection component, so that the laser or the automatic optical detection component can translate relative to the bracket in the preset direction and can rotate relative to the bracket.
8. A solar cell production line, characterized in that: A battery cell detection device comprising any one of claims 1-7.