TOPCon battery piece subfissure detection device

Abstract

The invention relates to the technical field of detection devices, in particular to a TOPCon battery piece subfissure detection device which comprises a supporting frame, a mounting top plate is detachably mounted on the supporting frame, an automatic detection mechanism used for limiting a battery piece is arranged on the supporting frame, and a detection auxiliary mechanism used for removing impurities on the surface of the battery piece is arranged below the automatic detection mechanism. The detection auxiliary mechanism is used for changing the height of the automatic detection mechanism, the automatic detection mechanism comprises a material conveying platform, a bearing frame is fixedly installed on the material conveying platform, and fixed sliding rods are symmetrically arranged in the bearing frame. By arranging the automatic detection mechanism and adopting the linkage design of a push rod assembly, a reset spring and a connecting plate, opening and closing of a clamping assembly can be triggered through one key, it is ensured that no displacement risk exists in the detection process of a battery piece, in addition, the flexible contact design of a rubber clamping plate can protect the surface of the battery piece from being scratched, the device can adapt to battery pieces of different thicknesses, and the detection efficiency is improved. And the universality and the safety of the device are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a TOPCon battery cell hidden crack detection device. Background Art

[0002] With the rapid development of the photovoltaic industry, TOPCon cells have attracted widespread attention due to their excellent conversion efficiency and stability. However, during the production process, microcracks (hidden cracks) that are difficult to detect with the naked eye may appear on the cell surface. These defects can seriously affect the performance and life of the cell. Therefore, efficient and accurate hidden crack detection technology has become a key demand in the photovoltaic manufacturing field. Currently, the most common cell hidden crack detection method on the market mainly uses infrared detection technology. Its principle is to scan the cell surface with an infrared probe and camera in a completely dark environment.

[0003] However, the clamping, conveying and detection processes of the detection device in the existing technology lack effective linkage and usually require step-by-step operation. Not only is it difficult to ensure the accurate positioning and centering of the battery cell, but external light can easily enter the detection area through the gaps in the equipment, interfering with the infrared detection results, making it inconvenient to use. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a TOPCon battery cell hidden crack detection device, which solves the technical problem that the clamping, transportation and detection processes of the detection device in the existing technology lack effective linkage, which easily leads to inaccurate detection results. It has the advantages of being able to achieve precise clamping and positioning, environmental sealing and isolation, and online cleaning.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: TOPCon battery cell hidden crack detection device, including a support frame, on which a mounting top plate is detachably mounted, an automatic detection mechanism for limiting the position of the battery cell is provided on the support frame, and a detection auxiliary mechanism for removing impurities on the surface of the battery cell is provided below the automatic detection mechanism. The detection auxiliary mechanism is used to change the height of the automatic detection mechanism. After the staff puts the battery cell in the designated position, the automatic detection mechanism will first clamp and limit the battery cell. Next, the detection auxiliary mechanism will automatically transport the battery cell vertically to the detection area. Subsequently, the automatic detection mechanism will perform hidden crack detection on the surface of the battery cell. The automatic detection mechanism includes a feeding platform, a telescopic connecting rod is provided between the feeding platform and the mounting top plate, a load-bearing frame is fixedly installed on the feeding platform, fixed slide bars are symmetrically provided inside the load-bearing frame, clamping assemblies are respectively provided on the two fixed slide bars, rubber splints are detachably installed on the clamping assemblies, a connecting circular tube is fixedly installed on the load-bearing frame, a push rod assembly is slidably connected to the connecting circular tube, a connecting plate is provided between the push rod assembly and the clamping assembly, a detection box is fixedly installed on the mounting top plate, and a detection device is provided on the detection box, when the push rod assembly moves along the connecting circular tube, the two clamping assemblies will be moved away from each other by cooperating with the connecting plate, thereby facilitating the staff to place the battery cells.

[0006] Preferably, a sealing gasket is provided on the feeding platform. When the battery cell extends into the interior of the detection box, the sealing gasket will contact the lower end of the mounting top plate, thereby ensuring that the interior of the detection box is in a dark environment.

[0007] Preferably, a return spring is provided inside the connecting tube, and the return spring is fixedly connected to the inner wall of the connecting tube. When the push rod assembly moves toward the inside of the connecting tube, the return spring is compressed, and when the return spring returns to its original length, the push rod assembly moves outward.

[0008] Preferably, one end of the connecting plate is rotatably connected to the push rod assembly, and the other end of the connecting plate is rotatably connected to the clamping assembly. When the push rod assembly moves, the two clamping assemblies will move closer to or farther away from each other.

[0009] Preferably, the detection auxiliary mechanism includes a bidirectional threaded rod, on which two movable protrusions are symmetrically arranged, a fixed protrusion is arranged at the bottom of the feeding platform, and a swinging straight rod is rotatably connected between the fixed protrusion and the movable protrusion. When the two movable protrusions approach each other, the feeding platform will move up or down through cooperation with the swinging straight rod.

[0010] Preferably, a micro fan is fixedly mounted on the outside of the support frame, and an inclined nozzle is provided on the inside of the support frame. When the micro fan is powered on, air is blown obliquely downward through the inclined nozzle.

[0011] Preferably, the bidirectional threaded rod is threadably matched with the movable protrusion, and when the bidirectional threaded rod rotates, the two movable protrusions are moved closer to or farther away from each other.

[0012] Preferably, a driving motor is fixedly mounted on the outside of the support frame, and the driving motor is used to drive the bidirectional threaded rod to rotate.

[0013] By means of the above technical solution, the present invention provides a TOPCon cell hidden crack detection device, which has at least the following beneficial effects: 1. The present invention provides an automatic detection mechanism and adopts a linkage design of a push rod assembly, a return spring and a connecting plate. It can trigger the opening and closing of the clamping assembly with one click, ensuring that there is no risk of displacement of the battery cell during the detection process. In addition, the flexible contact design of the rubber splint can not only protect the surface of the battery cell from scratches, but also adapt to battery cells of different thicknesses, enhancing the versatility and safety of the device.

[0014] 2. The present invention sets up an automatic detection mechanism and adopts an integrated detection box and a sealing gasket. When the carrier sends the battery cell into the detection box, the sealing gasket will be in close contact with the installation top plate, which can effectively isolate external light and ensure that the interior of the detection box is in a completely dark environment. This design eliminates the interference of ambient light on infrared detection, allowing the camera and probe to accurately capture hidden cracks on the surface of the battery cell, effectively improving the accuracy of detection.

[0015] 3. The present invention sets up a detection auxiliary mechanism and adopts a bidirectional threaded rod and a swinging straight rod linkage design, which can smoothly and accurately feed the battery cells into the detection box at a constant speed, completely avoiding the vibration or deviation that may be caused by traditional feeding. It can not only significantly improve the detection efficiency, but also provide an ideal positioning reference for subsequent hidden crack detection, so that the detection accuracy is reliably guaranteed.

[0016] 4. The present invention sets up a detection auxiliary mechanism and utilizes the mutual cooperation between the inclined nozzle and the micro-blower to timely remove tiny pollutants such as dust and fibers on the surface of the battery cell before the hidden crack detection, which can effectively prevent the detection system from misjudging, and can also improve the detection accuracy and greatly enhance the reliability of the detection results.

[0017] 5. The present invention provides an automatic detection mechanism, and the detection box and the feeding platform adopt a modular layout, which makes the maintenance or upgrade of the detection equipment (such as cameras and probes) more convenient. This modular design not only reduces the long-term use cost, but also improves the adaptability and scalability of the equipment, and is suitable for the detection needs of battery cells of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 The three-dimensional structure of the overall structure of the present invention Figure 1 ; Figure 2 The three-dimensional structure of the overall structure of the present invention Figure 2 ; Figure 3 Schematic diagram of the structure of the automatic detection mechanism of the present invention; Figure 4 It is a schematic diagram of some structures in the present invention; Figure 5 Schematic diagram of the structure of the carrier frame in the present invention; Figure 6 Schematic diagram of the structure of the connecting circular tube in the present invention; Figure 7 It is a structural schematic diagram of the detection auxiliary mechanism in the present invention.

[0019] In the figure: 1. Mounting base; 2. Support frame; 3. Mounting top plate; 4. Automatic detection mechanism; 401. Feeding platform; 402. Telescopic connecting rod; 403. Carrying frame; 404. Fixed slide bar; 405. Clamping assembly; 406. Rubber splint; 407. Connecting round tube; 408. Push rod assembly; 409. Return spring; 410. Connecting plate; 411. Sealing gasket; 412. Detection box; 413. Detection equipment; 5. Detection auxiliary mechanism; 501. Bidirectional threaded rod; 502. Driving motor; 503. Moving bump; 504. Fixed bump; 505. Swinging straight rod; 506. Micro fan; 507. Tilted nozzle. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1 The clamping, conveying and detection processes of the detection device in the existing technology lack effective linkage and usually require step-by-step operation. Not only is it difficult to ensure the accurate positioning and centering of the battery cell, but external light can easily enter the detection area through the gaps in the equipment, interfering with the infrared detection results and making it inconvenient to use. In order to solve this technical defect in the existing technology, Figures 1-6As shown, this embodiment proposes a TOPCon battery cell hidden crack detection device, which can effectively ensure that there is no risk of displacement of the battery cell during the detection process and can eliminate the interference of ambient light on infrared detection. A support frame 2 is fixedly installed on the mounting base 1, and a mounting top plate 3 is detachably installed on the support frame 2. An automatic detection mechanism 4 for limiting the battery cell is provided on the support frame 2, and a detection auxiliary mechanism 5 for removing impurities on the surface of the battery cell is provided below the automatic detection mechanism 4. The detection auxiliary mechanism 5 is used to change the height of the automatic detection mechanism 4. After the staff puts the battery cell in the specified position, the automatic detection mechanism 4 will first clamp and limit the battery cell. Next, the detection auxiliary mechanism 5 will automatically transport the battery cell vertically to the detection area. Subsequently, the automatic detection mechanism 4 will perform hidden crack detection on the surface of the battery cell.

[0022] Specifically, the automatic detection mechanism 4 includes a feeding platform 401, a telescopic connecting rod 402 is provided between the feeding platform 401 and the mounting top plate 3, a carrier 403 is fixedly installed on the feeding platform 401, and fixed slide bars 404 are symmetrically provided inside the carrier 403, and clamping assemblies 405 are respectively provided on the two fixed slide bars 404, and rubber splints 406 are detachably installed on the clamping assemblies 405, a connecting circular tube 407 is fixedly installed on the carrier 403, and a push rod assembly 408 is slidably connected to the connecting circular tube 407, and a return spring 409 is provided inside the connecting circular tube 407, and the return spring 409 is fixedly connected to the inner wall of the connecting circular tube 407. When the push rod assembly 408 moves toward the inside of the connecting circular tube 407, the return spring 409 is compressed, and when the return spring 409 returns to its original length, the push rod assembly 408 moves outward. When the push rod assembly 408 moves, a connecting plate 410 is provided between the push rod assembly 408 and the clamping assembly 405. One end of the connecting plate 410 is rotatably connected to the push rod assembly 408, and the other end of the connecting plate 410 is rotatably connected to the clamping assembly 405. When the push rod assembly 408 moves, the two clamping assemblies 405 are moved closer to or away from each other. A sealing gasket 411 is provided on the feeding platform 401. When the battery cell is extended into the interior of the detection box 412, the sealing gasket 411 will contact the lower end of the mounting top plate 3, thereby ensuring that the interior of the detection box 412 is in a dark environment. The detection box 412 is fixedly installed on the mounting top plate 3, and the detection box 412 is provided with a detection device 413. When the push rod assembly 408 moves along the connecting circular tube 407, it will cooperate with the connecting plate 410 to make the two clamping assemblies 405 move away from each other, thereby facilitating the staff to place the battery cell.

[0023] According to the above content, when using the device to detect hidden cracks on the surface of the battery cell, first, the staff will push the push rod assembly 408 toward the inside of the carrier 403. At this time, the two clamping assemblies 405 will move to both sides respectively under the action of the connecting plate 410, and then the battery cell will be placed on the carrier 403 and the push rod assembly 408 will be released.

[0024] Next, the push rod assembly 408 will move outward under the action of the return spring 409. When the push rod assembly 408 moves, the two clamping assemblies 405 will be brought closer to each other through the connecting plate 410, thereby clamping and limiting the battery cell to ensure stability during the detection process.

[0025] Subsequently, the carrier 403 will move vertically upward under the drive of the detection auxiliary mechanism 5, thereby transporting the battery cell and the carrier 403 to the interior of the detection box 412. Next, the camera and probe on the detection equipment 413 will perform hidden crack detection on the surface of the battery cell. After the inspection is completed, the carrier 403 will be moved out of the detection box 412 under the action of the detection auxiliary mechanism 5.

[0026] Moreover, if Figure 4 As shown, a sealing gasket 411 is provided on the feeding platform 401. When the battery cell moves into the interior of the detection box 412, the sealing gasket 411 will be in close contact with the lower end of the mounting top plate 3, thereby ensuring that the interior of the detection box 412 is in a dark environment, which can effectively improve the accuracy of hidden crack detection.

[0027] This embodiment sets an automatic detection mechanism 4 and adopts a linkage design of a push rod assembly 408, a return spring 409 and a connecting plate 410, which can trigger the opening and closing of the clamping assembly 405 with one button, ensuring that there is no risk of displacement of the battery cell during the detection process. In addition, the flexible contact design of the rubber splint 406 can not only protect the surface of the battery cell from scratches, but also adapt to battery cells of different thicknesses, thereby enhancing the versatility and safety of the device. Moreover, this embodiment sets an automatic detection mechanism 4 and adopts a matching design of an integrated detection box 412 and a sealing gasket 411. When the carrier 403 sends the battery cell into the detection box 412, the sealing gasket 411 will contact the installation The top plate 3 is in close contact and can effectively isolate external light, ensuring that the interior of the detection box 412 is in a completely dark environment. This design eliminates the interference of ambient light on infrared detection, allowing the camera and probe to accurately capture hidden cracks on the surface of the battery cell, effectively improving the accuracy of detection. In addition, this embodiment adopts a modular layout by setting an automatic detection mechanism 4, and the detection box 412 and the feeding platform 401, so that the maintenance or upgrade of the detection equipment 413 (such as cameras and probes) is more convenient. This modular design not only reduces the long-term use cost, but also improves the adaptability and scalability of the equipment, and is suitable for the detection needs of battery cells of different specifications.

[0028] Example 2 In order to be able to smoothly and accurately feed the battery cells into the inspection box 412 at a constant speed, completely avoiding the vibration or deviation that may be caused by traditional feeding, based on the embodiment 1, as shown in FIG. Figure 1 、 Figure 2 、 Figure 3 as well as Figure 7As shown, this embodiment is provided with a detection auxiliary mechanism 5. Specifically, the detection auxiliary mechanism 5 includes a bidirectional threaded rod 501, and a driving motor 502 is fixedly installed on the outside of the support frame 2. The driving motor 502 is used to drive the bidirectional threaded rod 501 to rotate. Two moving protrusions 503 are symmetrically arranged on the bidirectional threaded rod 501, and the bidirectional threaded rod 501 is threadedly engaged with the moving protrusion 503. When the bidirectional threaded rod 501 rotates, the two moving protrusions 503 will move closer to or away from each other. A fixed protrusion 504 is provided at the bottom of the feeding platform 401, and a swinging straight rod 505 is rotatably connected between the fixed protrusion 504 and the moving protrusion 503. When the two moving protrusions 503 approach each other, the feeding platform 401 will move up or down through the cooperation with the swinging straight rod 505. A micro fan 506 is fixedly installed on the outside of the support frame 2, and an inclined nozzle 507 is provided on the inner side of the support frame 2. When the micro fan 506 is powered on, it will blow air downward through the inclined nozzle 507.

[0029] According to the above content, it can be seen that after the automatic detection mechanism 4 fixes the position of the battery cell, the bidirectional threaded rod 501 will rotate under the action of the drive motor 502. When the bidirectional threaded rod 501 rotates, the two moving protrusions 503 will approach each other. During the movement of the moving protrusion 503, the feeding platform 401 will move upward through cooperation with the swing straight rod 505, thereby smoothly transporting the battery cell to the interior of the detection box 412.

[0030] Moreover, at the same time, the micro fan 506 will be automatically powered on and operated under the action of the controller (not shown in the figure). Next, the inclined nozzle 507 will spray out a high-speed airflow, thereby blowing and cleaning the surface of the battery cell during the vertical transportation process, thereby preventing the filamentous impurities on the surface of the battery cell from interfering with the detection of hidden cracks.

[0031] This embodiment sets up a detection auxiliary mechanism 5 and adopts a linkage design of a bidirectional threaded rod 501 and a swinging straight rod 505, which can smoothly and accurately feed the battery cells into the detection box 412 at a constant speed, completely avoiding the vibration or deviation that may be caused by traditional feeding. It can not only significantly improve the detection efficiency, but also provide an ideal positioning reference for subsequent hidden crack detection, so that the detection accuracy is reliably guaranteed; moreover, this embodiment sets up a detection auxiliary mechanism 5 and utilizes the mutual cooperation between the inclined nozzle 507 and the micro fan 506 to timely remove tiny pollutants such as dust and fibers on the surface of the battery cell before hidden crack detection, which can effectively prevent the detection system from misjudging, and can also improve the detection accuracy, thereby greatly improving the reliability of the detection results.

[0032] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0033] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A TOPCon battery cell hidden crack detection device, comprising a support frame (2), on which a mounting top plate (3) is detachably mounted, and characterized in that: An automatic detection mechanism (4) for limiting the position of the battery cell is provided on the support frame (2); a detection auxiliary mechanism (5) for removing impurities on the surface of the battery cell is provided below the automatic detection mechanism (4); the detection auxiliary mechanism (5) is used to change the height of the automatic detection mechanism (4); The automatic detection mechanism (4) includes a feeding platform (401), a telescopic connecting rod (402) is provided between the feeding platform (401) and the mounting top plate (3), a supporting frame (403) is fixedly installed on the feeding platform (401), fixed sliding rods (404) are symmetrically provided inside the supporting frame (403), a clamping assembly (405) is respectively provided on the two fixed sliding rods (404), a rubber clamping plate (406) is detachably installed on the clamping assembly (405), a connecting circular tube (407) is fixedly installed on the supporting frame (403), a push rod assembly (408) is slidably connected to the connecting circular tube (407), a connecting plate (410) is provided between the push rod assembly (408) and the clamping assembly (405), a detection box (412) is fixedly installed on the mounting top plate (3), and a detection device (413) is provided on the detection box (412).

2. The TOPCon cell crack detection device according to claim 1, characterized in that: A sealing gasket (411) is provided on the feeding platform (401).

3. The TOPCon cell crack detection device according to claim 1, characterized in that: A return spring (409) is provided inside the connecting circular tube (407), and the return spring (409) is fixedly connected to the inner wall of the connecting circular tube (407).

4. The TOPCon cell crack detection device according to claim 1, characterized in that: One end of the connecting plate (410) is rotatably connected to the push rod assembly (408), and the other end of the connecting plate (410) is rotatably connected to the clamping assembly (405).

5. The TOPCon cell crack detection device according to claim 1, characterized in that: The detection auxiliary mechanism (5) comprises a bidirectional threaded rod (501), two movable protrusions (503) are symmetrically arranged on the bidirectional threaded rod (501), a fixed protrusion (504) is arranged at the bottom of the feeding platform (401), and a swinging straight rod (505) is rotatably connected between the fixed protrusion (504) and the movable protrusion (503).

6. The TOPCon cell crack detection device according to claim 5, characterized in that: A micro fan (506) is fixedly mounted on the outside of the support frame (2), and an inclined nozzle (507) is provided on the inside of the support frame (2).

7. The TOPCon cell crack detection device according to claim 5, characterized in that: The bidirectional threaded rod (501) is threadably engaged with the movable protrusion (503).

8. The TOPCon cell crack detection device according to claim 5, characterized in that: A driving motor (502) is fixedly mounted on the outside of the support frame (2), and the driving motor (502) is used to drive the bidirectional threaded rod (501) to rotate.

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