Solar cell surface flatness detection device

Abstract

The invention relates to the technical field of detection devices, in particular to a solar cell surface flatness detection device which comprises a base and a detection auxiliary mechanism which is movably installed on the base and used for forming a closed detection area and preventing external dust from entering. The laser leveling mechanism comprises an installation support fixed to the base, and a U-shaped frame body is connected to the installation support in a sliding mode. According to the invention, a strict one-to-one correspondence relationship is formed by arranging the laser leveling mechanism, the multiple groups of laser lamps arranged at equal intervals and the light receiving channels, the flatness detection precision can be improved to a great extent through the precise geometrical optical layout, and the lifting push rod can accurately drive the U-shaped frame body to perform vertical displacement adjustment, so that the flatness detection precision is improved. Therefore, the laser of the light emitting assembly can always irradiate the surface of the battery at an accurate 45-degree incident angle, manual intervention and adjustment are not needed, and the detection efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection devices, in particular to a solar cell surface flatness detection device. BACKGROUND

[0002] In the production process of solar cells, surface flatness is a key parameter affecting cell performance, especially for TOPCon (tunnel oxide passivated contact) cells, which have strict requirements for surface flatness due to their back passivation structure. Therefore, a detection device is needed to detect the flatness of the cell surface.

[0003] In the prior art, the flatness of the surface of a solar cell is mainly detected by contact probes, laser triangulation or machine vision technology. These methods generally have low detection efficiency, are easily affected by the environment, have complex equipment and high maintenance costs, and are difficult to balance high precision and high efficiency, and lack effective environmental anti-interference design. SUMMARY

[0004] To overcome the shortcomings of the prior art, the present application provides a solar cell surface flatness detection device, which solves the technical problems of low detection efficiency and susceptibility to environmental influences of the flatness detection device in the prior art, and has the advantages of effectively improving detection efficiency and effectively preventing environmental influences.

[0005] To solve the above technical problems, the present application provides the following technical solution: a solar cell surface flatness detection device, comprising a base and a detection auxiliary mechanism movably mounted on the base for forming a closed detection area and blocking dust from the outside, the base is provided with a laser leveling mechanism for detecting the flatness of the cell surface, after the worker places the cell on the detection platform mechanism, the detection auxiliary mechanism will first perform air extraction treatment on the detection area to remove the dust near the detection area, then the laser leveling mechanism will automatically detect the flatness of the cell, the laser leveling mechanism comprises a mounting bracket fixed to the base, a U-shaped frame body is slidably connected to the mounting bracket, a light emitting assembly and a light receiving assembly are symmetrically arranged on the U-shaped frame body, a lifting push rod is installed on the mounting bracket to simultaneously control the height position of the light emitting assembly and the light receiving assembly in the detection area, the laser incidence direction of the light emitting assembly is at an angle of forty-five degrees to the surface of the cell, a light receiving channel is provided on the light receiving assembly to synchronously receive the reflected laser beam of the cell surface, when the laser lamp is directed at an angle of forty-five degrees to the surface of the cell body, if the irradiation area is flat, the light beam will be reflected to the inside of the light receiving channel.

[0006] Preferably, the inside of the light receiving assembly is provided with a suction disc, the suction disc is slidably connected with the light receiving assembly, and a photosensitive paper is detachably installed on the suction disc, after the reflected light beam passes through the light receiving channel, a trace will be left on the photosensitive paper.

[0007] Preferably, the lower part of the laser leveling mechanism is provided with a detection platform mechanism for placing the battery, the detection platform mechanism comprises a fixed sleeve fixedly connected with the base, a reset spring is fixedly installed in the fixed sleeve, a sliding sleeve is coaxially movably connected on the fixed sleeve, a rectangular platform is fixedly installed on the sliding sleeve, the upper end of the reset spring is fixedly connected with the rectangular platform, a top rod is fixedly installed in the sliding sleeve, and a touch switch is arranged in the fixed sleeve; when the sliding sleeve slides downward, the top rod will contact the touch switch, so that the touch switch is automatically turned on.

[0008] Preferably, the inside of the fixed sleeve is provided with a movable buckle, and a clamping groove is formed in the inner side wall of the sliding sleeve; when the sliding sleeve continuously moves downward, the movable buckle will extend into the inside of the clamping groove, so that the sliding sleeve is fixed with the fixed sleeve.

[0009] Preferably, the touch switch and the laser lamp on the light emitting assembly are electrically connected through wires; after the touch switch is turned on, a plurality of laser lamps will simultaneously emit laser beams at an angle of forty-five degrees to the surface of the battery body.

[0010] Preferably, the detection auxiliary mechanism comprises a protective cover, the protective cover is slidably connected with the mounting bracket, and an exhaust fan is arranged at the upper end of the protective cover; when the protective cover moves downward, the detection area can be shielded, so that the interference of environmental light and dust on the detection process can be effectively avoided.

[0011] Preferably, vertical sliding grooves are symmetrically formed in the two sides of the protective cover, the mounting bracket is slidably connected with the vertical sliding grooves, so that the protective cover can move a certain distance in the vertical direction, and interference with the process of placing the battery body can be avoided.

[0012] Preferably, shielding cloth curtains are fixedly installed on the upper and lower sides of the vertical sliding grooves, respectively, and the shielding cloth curtains are fixedly connected with the mounting bracket, so as to shield the vertical sliding grooves to the certain extent, and external dust entering the protective cover through the vertical sliding grooves is avoided as much as possible.

[0013] By means of the above technical scheme, the solar cell surface flatness detection device provided by the application has at least the following beneficial effects: 1、The laser leveling mechanism is arranged, a plurality of laser lamps arranged at equal intervals form a strict one-to-one correspondence with the light receiving channel, the precise geometric optical layout can greatly improve the flatness detection precision, the lifting push rod can accurately drive the U-shaped frame body to vertically displace and adjust, so that the laser of the light emitting assembly can always irradiate the battery surface at an accurate forty-five degree incident angle, manual intervention for adjustment is not needed, and the detection efficiency is significantly improved.

[0014] 2、The present application sets up the laser leveling mechanism, adopts the light receiving channel with specific depth to build the efficient "optical screening" mechanism, when the battery surface is flat, the reflected light beam can pass through the light receiving channel completely and form complete light spot on the photosensitive paper, when the surface is uneven, the reflected light beam is blocked by the sidewall of the light receiving channel, resulting in the light spot loss or defect on the photosensitive paper, the staff can quickly judge the flatness of the battery surface by simply observing the light spot distribution on the photosensitive paper, without relying on complex electronic analysis equipment, which reduces the detection cost and avoids the error caused by electronic signal processing.

[0015] 3、The present application sets up the detection platform mechanism, when the sliding sleeve is displaced downward, the movable buckle can be automatically embedded into the clamping groove to realize mechanical locking, ensure the stability of the platform during detection, and the ejector rod can trigger the touch switch accurately to automatically start the laser detection, realizing the one-key operation of "placing and detecting", and simplifying the operation process.

[0016] 4、The present application sets up the detection platform mechanism, the ejector rod triggers the laser work only in the pressed state, and the reset spring pushes the platform to reset and automatically cuts off the laser power as soon as the battery is removed after detection, which can prevent energy waste caused by continuous laser irradiation, ensure the absolute stability of the platform during detection through the mechanical self-locking structure, avoid vibration interference, realize the dual effects of safety protection and energy saving control through simple and reliable mechanical structure, and greatly reduce the use cost and maintenance demand of the equipment.

[0017] 5、The present application sets up the detection auxiliary mechanism, the protective cover is designed to be liftable, which can completely shield the detection area during detection and facilitate battery placement operation, the suction fan can actively discharge air and dust particles in the protective cover before detection, effectively eliminating environmental interference, and the shielding curtains on both sides form a closed detection space, which double-blocks the external dust, can significantly reduce the interference of environmental light on laser detection, and effectively control the influence of dust on the detection result. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings: Figure 1 The laser leveling mechanism of the present application is a three-dimensional structure Figure 1 ; Figure 2 The overall structure of the present application is a three-dimensional structure Figure 2 ; Figure 3 The structure of the laser leveling mechanism in the present application is a structure diagram Figure 4This is a schematic diagram of the structure of the optical receiving component in this invention; Figure 5 This is a schematic diagram of the detection platform mechanism in this invention; Figure 6 This is a schematic diagram of the detection auxiliary mechanism in this invention.

[0019] In the diagram: 1. Base; 2. Laser leveling mechanism; 201. Mounting bracket; 202. U-shaped frame; 203. Lifting push rod; 204. Light emission assembly; 205. Light receiving assembly; 206. Light receiving channel; 207. Drawer; 3. Detection platform mechanism; 301. Fixed sleeve; 302. Return spring; 303. Sliding sleeve; 304. Rectangular platform; 305. Top rod; 306. Touch switch; 307. Movable buckle; 308. Slot; 4. Detection auxiliary mechanism; 401. Protective cover; 402. Suction fan; 403. Vertical slide; 404. Shielding curtain; 5. Battery body. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Current technologies for detecting the flatness of solar cell surfaces primarily rely on contact probes, laser triangulation, or machine vision. These methods generally suffer from low detection efficiency, susceptibility to environmental interference, complex equipment, and high maintenance costs, making it difficult to balance high precision and high efficiency, and lacking effective environmental interference resistance designs. To address these shortcomings in existing technologies, such as... Figures 1-4 As shown, this embodiment proposes a solar cell surface flatness detection device. Through a precise geometric optical layout, the flatness detection accuracy can be greatly improved. It includes a base 1 and a detection auxiliary mechanism 4 movably mounted on the base 1 to form a closed detection area and prevent external dust from entering. The base 1 is equipped with a laser flatness measuring mechanism 2 for detecting the flatness of the battery surface. After the operator places the battery on the detection platform mechanism 3, the detection auxiliary mechanism 4 will first perform air extraction on the detection area to remove the dust near the detection area. Then, the laser flatness measuring mechanism 2 will automatically detect the flatness of the battery.

[0022] Specifically, the laser leveling mechanism 2 comprises a mounting bracket 201 fixedly connected with the base 1, a U-shaped bracket body 202 slidably connected on the mounting bracket 201, a lifting push rod 203 arranged on the mounting bracket 201 and configured to drive the U-shaped bracket body 202 to move up and down, a light emitting assembly 204 and a light receiving assembly 205 symmetrically arranged on the U-shaped bracket body 202, a plurality of groups of laser lamps arranged on the light emitting assembly 204 at equal intervals, a light receiving channel 206 formed on the light receiving assembly 205, and a suction tray 207 arranged in the light receiving assembly 205 and slidably connected with the light receiving assembly 205. The suction tray 207 is detachably provided with a photosensitive paper. When the laser lamps are directed at the surface of the battery body 5 at an angle of 45 degrees, the reflected light beams will enter the light receiving channel 206 if the irradiation area is flat.

[0023] According to the above content, during the detection operation, as shown in the figure, the worker will place the battery body 5 on the detection platform mechanism 3, and then the lifting push rod 203 will drive the U-shaped bracket body 202 to move up or down under the action of the controller, so as to ensure that the laser incidence direction of the light emitting assembly 204 is at an angle of 45 degrees with the surface of the battery body 5. Figure 1

[0024] Next, the plurality of laser lamps on the light emitting assembly 204 will simultaneously emit laser beams to irradiate the battery body 5 at an angle of 45 degrees, and then the reflected light beams will be directed to the light receiving assembly 205 after being reflected by the surface of the battery body 5.

[0025] Moreover, the setting position of the light receiving channel 206 and the setting position of the laser lamp are one-to-one corresponding. If the irradiation area on the battery body 5 is flat, the reflected light beams will just pass through the light receiving channel 206 to irradiate the photosensitive paper and form a complete light spot, otherwise, if the irradiation area is not flat, the reflected light beams of the laser beams cannot pass through the light receiving channel 206 with a certain depth completely, and no complete light spot or light spot will be formed on the photosensitive paper.

[0026] After the detection is completed, the worker will pull out the suction tray 207, and then observe the light spot distribution on the photosensitive paper to quickly determine whether the surface of the battery body 5 is flat.

[0027] ​The embodiment sets the laser leveling mechanism 2, and a plurality of groups of laser lamps arranged at equal intervals form a strict one-to-one correspondence with the light receiving channel 206. Through this precise geometric optical layout, the flatness detection precision can be greatly improved. In addition, the lifting push rod 203 can accurately drive the U-shaped frame body 202 to perform vertical displacement adjustment, so that the laser of the light emitting assembly 204 can always irradiate the battery surface at an accurate forty-five-degree incidence angle, without the need for manual intervention for adjustment, thereby significantly improving the detection efficiency. In addition, the embodiment sets the laser leveling mechanism 2, and the light receiving channel 206 with a specific depth is used to construct an efficient “optical screening” mechanism. When the battery surface is flat, the reflected light beam can completely pass through the light receiving channel 206 and form a complete light spot on the photosensitive paper. When the surface is uneven, the reflected light beam is blocked by the side wall of the light receiving channel 206, resulting in the absence or damage of the light spot on the photosensitive paper. The staff can quickly judge the flatness of the battery surface by simply observing the light spot distribution on the photosensitive paper, without relying on complex electronic analysis equipment, thereby reducing the detection cost and avoiding errors that may be introduced by electronic signal processing.

[0028] Embodiment two In order to realize the one-key operation of “placing and detecting”, simplify the operation process, on the basis of the embodiment one, as shown in Figure 1 and Figure 5 , the embodiment sets a detection platform mechanism 3. Specifically, the detection platform mechanism 3 includes a fixed sleeve 301 fixedly connected with the base 1. The inside of the fixed sleeve 301 is fixedly installed with a return spring 302. The fixed sleeve 301 is coaxially and movably connected with a sliding sleeve 303. The sliding sleeve 303 is fixedly installed with a rectangular platform 304. The upper end of the return spring 302 is fixedly connected with the rectangular platform 304. The inside of the sliding sleeve 303 is fixedly installed with a top rod 305. The inside of the fixed sleeve 301 is provided with a touch switch 306. The touch switch 306 and the laser lamp on the light emitting assembly 204 are electrically connected through wires. When the sliding sleeve 303 slides downward, the top rod 305 will contact the touch switch 306, so that the touch switch 306 is automatically turned on. After the touch switch 306 is turned on, a plurality of groups of laser lamps will simultaneously emit laser beams at a forty-five-degree angle to the surface of the battery body 5. The inside of the fixed sleeve 301 is provided with a movable buckle 307. The inner side wall of the sliding sleeve 303 is provided with a clamping groove 308. When the sliding sleeve 303 continuously moves downward, the movable buckle 307 will extend into the inside of the clamping groove 308, so that the sliding sleeve 303 is fixed with the fixed sleeve 301.

[0029] According to the above, when the flatness is detected, the staff will first put the battery body 5 on the rectangular platform 304, and then press the rectangular platform 304 gently downward, then the rectangular platform 304 and the sliding sleeve 303 will move vertically downward and press the reset spring 302.

[0030] When the sliding sleeve 303 moves to the specified position, the movable buckle 307 will automatically extend into the inside of the clamping groove 308, thereby clamping the sliding sleeve 303.

[0031] At the same time, the top rod 305 will contact the touch switch 306 to make it on, and then the laser lamp on the light emitting assembly 204 will emit a laser beam to the surface of the battery body 5, thereby quickly completing the detection work.

[0032] After the detection is completed, the staff will take the battery body 5 from the rectangular platform 304, at this time, the sliding sleeve 303 will be elastically returned to the original position under the action of the reset spring 302, in the process, the top rod 305 will be separated from the touch switch 306, thereby automatically turning off the laser lamp.

[0033] The embodiment sets the detection platform mechanism 3, when the sliding sleeve 303 moves downward, the movable buckle 307 can automatically embed into the clamping groove 308 to realize mechanical locking, which ensures the stability of the platform during detection, and the top rod 305 can accurately trigger the touch switch 306 to automatically start the laser detection, which perfectly realizes the one-key operation of "placing and detecting", simplifies the operation process; moreover, the embodiment sets the detection platform mechanism 3, only in the pressed state, the top rod 305 triggers the laser to work, once the detection is completed and the battery is taken down, the reset spring 302 will immediately push the platform to reset and automatically cut off the laser power, which can prevent energy waste caused by continuous laser irradiation, and can ensure the absolute stability of the platform during detection through the mechanical self-locking structure, avoid vibration interference, through the simple and reliable mechanical structure, the dual effects of safety protection and energy saving control are realized, which greatly reduces the use cost and maintenance demand of the equipment.

[0034] Embodiment three In order to eliminate the influence of the environment, reduce the interference of the environmental light and dust on the laser detection, on the basis of the above embodiment, like Figure 2 and Figure 6As shown, the embodiment is provided with a detection auxiliary mechanism 4. Specifically, the detection auxiliary mechanism 4 includes a protective cover 401, the protective cover 401 is in sliding connection with the mounting bracket 201, the upper end of the protective cover 401 is provided with a suction fan 402, when the protective cover 401 moves downward, the detection area can be shielded, and the interference of environmental light and dust on the detection process can be effectively avoided, vertical sliding grooves 403 are symmetrically formed on the two sides of the protective cover 401, the mounting bracket 201 is in sliding connection with the vertical sliding grooves 403, the protective cover 401 can be moved in the vertical direction by a certain distance, and interference on the process of placing the battery body 5 is avoided, the upper and lower sides of the vertical sliding grooves 403 are respectively fixedly provided with shielding cloth curtains 404, the shielding cloth curtains 404 are fixedly connected with the mounting bracket 201, so that the vertical sliding grooves 403 are shielded to the greatest extent, and external dust is prevented from entering the protective cover 401 through the vertical sliding grooves 403.

[0035] According to the above content, when the battery body 5 is placed, the protective cover 401 is pushed upward by the worker, and after the placement is completed, the protective cover 401 is pulled downward, so that the detection area is shielded by the protective cover 401, the interference of environmental light on the flatness detection process is avoided, and the detection accuracy can be effectively improved.

[0036] Moreover, before the laser detection starts, the suction fan 402 automatically sucks out the air inside the protective cover 401, so that most of the dust particles inside the protective cover 401 are discharged, and the adverse effects of the dust particles on the laser detection can be effectively avoided.

[0037] The embodiment can effectively eliminate environmental interference by the detection auxiliary mechanism 4, the protective cover 401 adopts a lifting design, the detection area can be completely shielded during detection, and the battery placement operation is facilitated, the suction fan 402 can actively discharge the air and dust particles in the protective cover 401 before detection, the environmental interference is effectively eliminated, the shielding cloth curtains 404 are arranged on the two sides, a closed detection space is formed, external dust is prevented from entering, the interference of environmental light on the laser detection is significantly reduced, and the influence of dust factors on the detection result is effectively controlled.

[0038] The control mode of the present application is automatically controlled by a controller, the control circuit of the controller can be realized by simple programming of those skilled in the art, the power supply also belongs to the common knowledge in the art, and the present application is mainly used for protecting mechanical devices, so the control mode and circuit connection of the present application will not be explained in detail.

[0039] It should be noted that, as used in this text, the terms "includes," "including" or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not limited to only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous modifications and changes can be made to the embodiments without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A device for detecting the flatness of a solar cell surface, comprising a base (1), and a detection auxiliary mechanism (4) movably mounted on the base (1) for forming a closed detection area and blocking the entry of external dust, characterized in that: The base (1) is provided with a laser leveling mechanism (2) for detecting the flatness of the battery surface; The laser leveling mechanism (2) comprises a mounting bracket (201) fixed to the base (1), a U-shaped bracket body (202) slidably connected to the mounting bracket (201), a light emitting assembly (204) and a light receiving assembly (205) symmetrically arranged on the U-shaped bracket body (202), and a lifting push rod (203) installed on the mounting bracket (201) and used to simultaneously control the height positions of the light emitting assembly (204) and the light receiving assembly (205) in a detection area, the laser incidence direction of the light emitting assembly (204) is at an angle of 45 degrees with the battery surface, and the light receiving assembly (205) is provided with a light receiving channel (206) for synchronously receiving reflected laser beams of the battery surface.

2. The solar cell surface flatness detection apparatus according to claim 1, characterized by: The light receiving assembly (205) is internally provided with a suction tray (207) slidably connected to the light receiving assembly (205), and the suction tray (207) is detachably installed with a photosensitive paper.

3. The solar cell surface flatness detection apparatus according to claim 1, characterized by: The laser leveling mechanism (2) is provided below with a detection platform mechanism (3) for placing the battery, the detection platform mechanism (3) comprises a fixed sleeve (301) fixedly connected with the base (1), a reset spring (302) fixedly installed in the fixed sleeve (301), a sliding sleeve (303) coaxially movably connected to the fixed sleeve (301), a rectangular platform (304) fixedly installed on the sliding sleeve (303), an upper end of the reset spring (302) fixedly connected with the rectangular platform (304), a top rod (305) fixedly installed in the sliding sleeve (303), and a touch switch (306) arranged in the fixed sleeve (301).

4. The solar cell surface flatness detection apparatus according to claim 3, characterized by: The fixed sleeve (301) is internally provided with a movable buckle (307), and the inner side wall of the sliding sleeve (303) is provided with a clamping groove (308).

5. The solar cell surface flatness detection apparatus according to claim 3, characterized by: The touch switch (306) and the laser lamp on the light emitting assembly (204) are electrically connected through wires.

6. The solar cell surface flatness inspection apparatus according to claim 1, characterized by: The detection auxiliary mechanism (4) comprises a protective cover (401) slidably connected with the mounting bracket (201), and a suction fan (402) arranged at the upper end of the protective cover (401).

7. The solar cell surface flatness detection apparatus according to claim 6, characterized by: The protective cover (401) is symmetrically provided at both sides with vertical sliding grooves (403), and the mounting bracket (201) is slidably connected with the vertical sliding grooves (403).

8. The solar cell surface flatness detection apparatus according to claim 7, characterized by: The vertical sliding grooves (403) are respectively fixedly installed with shielding cloth curtains (404) at the upper and lower sides, and the shielding cloth curtains (404) are fixedly connected with the mounting bracket (201).

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