Light source assembly, transport device and detection apparatus

Abstract

The application provides a light source assembly, a conveying device and a detection equipment. The light source assembly is used in cooperation with a conveying line assembly. The conveying line assembly is used for carrying and conveying materials. The light source assembly comprises a light source, an isolation belt made of a light-transmitting material, and the isolation belt at least partially covers the upper surface of the light source. When the materials move above the light source, the light source is used for irradiating light on the materials through the isolation belt. A roller mechanism is used for tensioning the isolation belt. The roller mechanism is used for tensioning the conveying isolation belt, so that the isolation belt continuously moves and covers the upper surface of the light source. The isolation belt covers the upper surface of the light source, and the roller mechanism drives the isolation belt to continuously move. The isolation belt can take away sundries from above the light source during the conveying process, realizes automatic cleaning, avoids the sundries staying above the light source for a long time and affecting the light effect, and ensures the imaging quality of the material shooting and the accuracy of the detection result.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell testing technology, and in particular to a light source component, a transport device, and a testing equipment. Background Technology

[0002] In the manufacturing of photovoltaic cells, multi-segmentation is a process that cuts a standard cell into multiple segments, including cutting, passivation, and joining. This process shortens the current path, reduces resistance loss, and improves the performance and efficiency of photovoltaic modules. In multi-segmentation, testing equipment is typically used to inspect the cell segments to ensure that only qualified segments proceed to the next process.

[0003] In related technologies, testing equipment typically includes a conveyor belt, a light source, and an imaging device. The conveyor belt transports battery wafers, and the light source illuminates the wafers on the conveyor belt. The imaging device captures images of the battery wafers on the conveyor belt, obtaining high-quality images under the illumination of the light source. However, the light source is usually located below the conveyor belt. Over long-term operation, fragments, debris, and other impurities from the battery wafers may fall onto the light source, affecting its illumination. If not cleaned promptly, this will impact the imaging quality of the imaging device and the accuracy of the testing results. Utility Model Content

[0004] In view of the above, it is necessary to provide a light source component, a transportation device, and a testing device to solve the problem that the light effect is easily affected by debris, thus affecting the shooting quality.

[0005] The first aspect of this application provides a light source assembly for working in conjunction with a transport line assembly for carrying and transporting materials. The light source assembly includes: a light source; a light-transmitting belt made of a light-transmitting material, the light source at least partially covering the upper surface of the light source; when the material moves over the light source, the light source illuminates the material through the light-transmitting belt; and a roller mechanism, the light-transmitting belt being tensioned and disposed on the roller mechanism; the roller mechanism is used to tension the transport light-transmitting belt so that the light-transmitting belt moves continuously and covers the upper surface of the light source.

[0006] In some embodiments, the roller mechanism includes a first roller, a second roller, and a driving member, wherein the first roller and the second roller are spaced apart along a first direction, which is parallel to the material transport direction; the isolation belt is annular, with its two ends respectively wrapped around the first roller and the second roller; the light source is disposed inside the isolation belt and located between the first roller and the second roller; the driving member is used to drive the first roller and the second roller to rotate, so that the isolation belt can move to cover the upper surface of the light source.

[0007] In some embodiments, the roller mechanism includes a take-up drum, an unwind drum, and a drive member, wherein the take-up drum and the unwind drum are spaced apart along a first direction, which is parallel to the material transport direction; the two ends of the isolation belt are respectively wound around the take-up drum and the unwind drum; the light source is disposed below the isolation belt and between the take-up drum and the unwind drum; the drive member is used to drive the take-up drum and the unwind drum to rotate, so as to drive the isolation belt to move to cover the upper surface of the light source.

[0008] In some embodiments, the light source assembly further includes a cleaning mechanism; the cleaning mechanism includes a support and a scraper, the support being disposed below the light source and the scraper being disposed on the support; the isolation strip moves at least partially and passes through the scraper, the scraper being used to scrape off debris attached to the isolation strip.

[0009] In some embodiments, the scraper has multiple scraper members, which are divided into a first scraper member and a second scraper member. The first scraper member and the second scraper member are spaced apart in a first direction to form a gap space for the isolation belt to pass through. The first direction is parallel to the material transport direction. When the isolation belt passes through the gap space, the first scraper member scrapes the lower surface of the isolation belt, and the second scraper member scrapes the upper surface of the isolation belt.

[0010] In some embodiments, the top height of the first scraper is greater than the bottom height of the second scraper, so that the projected portions of the first and second scrapers overlap in a first direction.

[0011] In some embodiments, the support is provided with a storage slot located below the scraper, the storage slot being used to collect debris scraped off by the self-isolating strip.

[0012] In some embodiments, there are multiple light sources, which are spaced apart in a second direction, and a clearance space is formed between two adjacent light sources for at least partial accommodation by the transport line assembly. The second direction has an angle with the transport direction of the material.

[0013] A second aspect of this application provides a transportation device, including a transport line assembly and a light source assembly as provided in the first aspect; the transport line assembly includes a transport belt, a support platform, and a drive mechanism, wherein a first drive wheel and a second drive wheel are respectively provided at both ends of the support platform, and the two ends of the transport belt are respectively wound around the first drive wheel and the second drive wheel; the transport belt is used to carry materials; the drive mechanism is used to drive the first drive wheel and the second drive wheel to rotate, so as to drive the transport belt to move and transport materials along a first direction.

[0014] In some embodiments, there are multiple conveyor belts that are spaced apart in a second direction; there are multiple light sources, and the multiple light sources and multiple conveyor belts are arranged side by side and staggered in a second direction, with the first direction and the second direction having an angle.

[0015] In some embodiments, each support platform is configured with at least two conveyor belts, and the support platform is provided with a receiving groove in the space between two adjacent conveyor belts, the receiving groove being used to receive a light source.

[0016] In some embodiments, the support platform has a built-in negative pressure chamber, and the conveyor belt has multiple adsorption holes for communicating with the negative pressure chamber; when the conveyor belt carries materials, the negative pressure chamber is used to provide negative pressure and adsorb materials through the adsorption holes.

[0017] A third aspect of this application provides a detection device, including a shooting device and a transport device as provided in the second aspect; the shooting device is used to shoot the material on the transport device under the illumination provided by the light source component.

[0018] The light source assembly, transport device, and testing equipment provided in this application utilize a barrier belt covering the upper surface of the light source. If debris, residue, or other foreign matter falls during transport, it will fall directly onto the barrier belt, which will catch it, preventing it from contacting the light source. Furthermore, a roller mechanism drives the barrier belt in continuous motion, carrying away debris from above the light source during transport. This automatic cleaning prevents debris from remaining above the light source for extended periods, thus ensuring the imaging quality of the captured material and the accuracy of the testing results. Attached Figure Description

[0019] Figure 1 A schematic diagram showing the working state of the testing equipment provided in this application.

[0020] Figure 2 A schematic diagram of the transportation device provided in this application.

[0021] Figure 3 This is a schematic diagram showing the working state of the light source and the isolation zone provided in this application.

[0022] Figure 4 This is a structural schematic diagram of the isolation belt and roller mechanism provided in this application.

[0023] Figure 5 A schematic diagram showing the distribution of multiple light sources and multiple conveyor belts provided in this application.

[0024] Figure 6 A schematic diagram of the cleaning organization provided in this application.

[0025] Figure 7 A structural schematic diagram of the isolation strip in another embodiment of this application is provided.

[0026] Figure 8 This is a schematic diagram of the structure of the transport line assembly and the light source provided in this application.

[0027] Figure 9 The working principle diagram of the negative pressure chamber provided in this application.

[0028] Explanation of main component symbols 100. Light source assembly; 200. Conveyor line assembly; 300. Conveying device; 400. Shooting device; 500. Material; 10. Light source; 20. Isolation belt; 21. Clearance space; 30. Roller mechanism; 31. First roller; 32. Second roller; 33. First rotating frame; 331. First rotating shaft; 34. Second rotating frame; 341. Second rotating shaft; 35. Driving component; 36. Take-up drum; 37. Unwind drum; 40. Cleaning mechanism; 41. Support; 411. Storage slot; 42. Scraper; 421. First scraper; 422. Second scraper; 43. Top frame; 44. Column; 50. Conveyor belt; 51. Adsorption hole; 60. Support platform; 61. Receiving slot; 62. First drive wheel; 63. Second drive wheel; 64. Negative pressure chamber; 65. Perforation; 70. Driving mechanism. Detailed Implementation

[0029] In the description of the embodiments of this application, when an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an element centrally located simultaneously. When an element is considered to be "set" on another element, it can be directly set on the other element or there may be an element centrally located simultaneously. In this application, unless otherwise expressly specified and limited, the terms "installed," "connected," "attached," "fixed," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances. The directional descriptions in this embodiment, such as "up," "down," "top," "bottom," etc., are all based on the direction of the product in the actual use scenario.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the production and manufacturing of photovoltaic cells, the multi-segmentation process is a process that cuts a standard cell into multiple segments, including cutting, passivation treatment, and connection. It has the effect of shortening the current path, reducing resistance loss, and improving the performance and efficiency of photovoltaic modules.

[0032] Cutting refers to using laser cutting technology to slice standard-sized solar cells into multiple cell segments (also known as multi-segment solar cells). Laser cutting offers advantages such as high precision and low damage, ensuring the integrity of the cut edges and the mechanical strength of the solar cells. Passivation treatment refers to passivating the edges of the cut cell segments to reduce edge defects and minimize surface recombination losses. Connection refers to creating new series and parallel connections on the electrodes of the cell segments.

[0033] In multi-cell manufacturing processes, inspection equipment is typically used to test the battery cells to ensure that only qualified cells proceed to the next stage. This inspection equipment usually includes conveyor belts, a light source, and an imaging device. Multiple conveyor belts are typically arranged side-by-side with spacing between them. A large backlight is usually used, with the multiple conveyor belts positioned directly above it. During transport, the battery cells are simultaneously carried on multiple conveyor belts, with the backlight shining upwards. The imaging device, located above the backlight, captures images of the battery cells on the conveyor belts under the illumination provided by the light source, obtaining high-quality images.

[0034] However, the testing equipment in the relevant technologies has the following problems.

[0035] 1. During long-term operation, some fragments, residues and other debris may fall onto the light source from the battery cells, affecting the light effect of the light source. If not cleaned in time, it will affect the imaging quality of the shooting device and the accuracy of the detection results.

[0036] 2. Due to the large size of the backlight, there is interference between the backlight and the conveyor belt in the horizontal direction. The backlight must be placed below multiple conveyor belts, which causes the backlight and the conveyor belt to be misaligned in the horizontal direction. This results in a large distance between the backlight and the battery cells, poor light illumination, and difficulty in cleaning debris from the backlight surface.

[0037] 3. When the battery cells themselves are thin, they are prone to shifting during transportation, resulting in poor transportation stability and affecting the yield rate.

[0038] Therefore, embodiments of this application provide a light source assembly, a transport device, and a testing equipment to solve the above-mentioned problems.

[0039] This application first provides a light source assembly.

[0040] Figure 1 A schematic diagram showing the working state of the testing equipment provided in this application.

[0041] like Figure 1 As shown, the light source assembly 100 is applied to the transport device 300, which includes the light source assembly 100 and the transport line assembly 200. The transport line assembly 200 is used to carry and transport the material 500. The light source assembly 100 works in conjunction with the transport line assembly 200 to illuminate the material 500 on the transport line assembly 200. In the example of this application, the material 500 is a battery segment. The transport direction of the material 500 is defined as parallel to a first direction, which is the X direction in the figure, and the vertical direction is the Z direction in the figure.

[0042] The transport device 300 can be applied to a testing device, which includes an imaging device 400 and the transport device 300. The transport device 300 transports material 500 via the transport line assembly 200 and illuminates the material 500 via the light source assembly 100. The imaging device 400 photographs the material 500 on the transport device 300 under the illumination provided by the light source assembly 100. The imaging device 400 can be a CCD camera (charge-coupled device camera).

[0043] The light source assembly 100 provides illumination for the imaging device 400, ensuring sufficient and uniform light to illuminate the material 500 so that the imaging device 400 can capture high-quality images. These images can clearly capture minute surface defects on the material 500, allowing for timely detection and screening of problematic materials 500, preventing unqualified products from entering subsequent processing stages, thereby ensuring the quality and performance of the finished solar cells.

[0044] Figure 2 A schematic diagram of the transportation device provided in this application.

[0045] Please refer to the following: Figure 2 In this embodiment, the light source assembly 100 includes a light source 10, an isolation belt 20, and a roller mechanism 30. The upper part of the light source 10 is the light-emitting surface, and the light source 10 is used to emit light upwards. The light source 10 can be fixed to the transport line assembly 200, which supports the light source 10. The isolation belt 20 is made of a light-transmitting material and at least partially covers the upper surface of the light source 10. When the material 500 moves over the light source 10, the light source 10 emits light through the isolation belt 20 onto the material 500. The isolation belt 20 is tensioned in the roller mechanism 30. The roller mechanism 30 is used to tension the transport isolation belt 20, so that the isolation belt 20 continuously moves and covers the upper surface of the light source 10.

[0046] Figure 3A schematic diagram of the light source assembly provided in this application.

[0047] Please refer to the following: Figure 3 In actual operation, the transport line assembly 200 carries and moves the material 500. When the material 500 moves above the light source 10, the light source 10 shines light on the material 500 through the isolation belt 20. By utilizing the light transmission characteristics of the isolation belt 20, the light source 10 can provide sufficient and uniform light for the material 500.

[0048] Meanwhile, by covering the upper surface of the light source 10 with the isolation belt 20, if debris such as fragments or residues fall from the material 500 during transportation, the debris will fall directly onto the isolation belt 20, which will catch the debris and prevent it from contacting the light source 10 after falling.

[0049] Furthermore, the roller mechanism 30 drives the isolation belt 20 to move continuously. During the transportation process, the isolation belt 20 can carry the debris away from above the light source 10, realizing automatic cleaning and preventing the debris from staying above the light source 10 for a long time and affecting the light effect, thus ensuring the imaging quality of the material 500 and the accuracy of the detection results.

[0050] Figure 4 This is a structural schematic diagram of the isolation belt and roller mechanism provided in this application.

[0051] Please refer to the following: Figure 4 In some embodiments, the isolation strip 20 is annular and is a closed film strip structure made of light-transmitting material.

[0052] The roller mechanism 30 includes a first roller 31, a second roller 32, a first rotating frame 33, a second rotating frame 34, and a driving member 35. The first rotating frame 33 and the second rotating frame 34 support the first roller 31 and the second roller 32, respectively. The first roller 31 and the second roller 32 work together to tension the isolation belt 20. The driving member 35 drives the first roller 31 and the second roller 32 to rotate synchronously, thereby enabling the isolation belt 20 to cover the upper surface of the light source 10.

[0053] Specifically, the first roller 31 and the second roller 32 are spaced apart along a first direction, and the two ends of the isolation strip 20 are respectively wrapped around the first roller 31 and the second roller 32. The first rotating frame 33 and the second rotating frame 34 are spaced apart along the first direction, with the first roller 31 rotatably connected to the first rotating frame 33 and the second roller 32 rotatably connected to the second rotating frame 34. The light source 10 is disposed inside the isolation strip 20 and located between the first roller 31 and the second roller 32.

[0054] It is understandable that when the first roller 31 and the second roller 32 rotate synchronously, the friction between the first roller 31, the second roller 32 and the isolation belt 20 causes both ends of the isolation belt 20 to roll on the surfaces of the first roller 31 and the second roller 32 respectively, so that the isolation belt 20 moves around the light source 10 as a whole. During this process, the part of the isolation belt 20 above the light source 10 can move to below the light source 10, and the part of the isolation belt 20 below the light source 10 can move to above the light source 10. There is always a part of the isolation belt 20 above the light source 10 to catch debris, and as the isolation belt 20 moves, the part catching debris can move away from above the light source 10, and so on.

[0055] Figure 5 A schematic diagram showing the distribution of multiple light sources and multiple conveyor belts provided in this application.

[0056] Please refer to the following: Figure 5 In some embodiments, there are multiple light sources 10, which are spaced apart in the second direction, with a clearance space 21 formed between adjacent light sources 10 for at least partial reception by the transport line assembly 200. The second direction forms an angle with the transport direction of the material 500. Exemplarily, the second direction is the Y direction shown in the figure.

[0057] When the transport line assembly 200 has multiple transport belts 50, the transport belts 50 can be housed within a housing space so that the multiple transport belts 50 and multiple light sources 10 can be staggered in the second direction. This eliminates horizontal positional interference between the transport belts 50 and the light sources 10, allowing the light sources 10 to be positioned close to and flush with the transport belts 50. This shortens the distance between the light sources 10 and the material 500, improving the lighting effect, and also reduces the obstruction of the light sources 10 by the transport belts 50, making it easier to clean debris above the light sources 10.

[0058] For example, there are multiple isolation belts 20, each corresponding to a multiple light source 10, with each light source 10 disposed within the inner circle of its corresponding isolation belt 20. The height of the light source 10 is configured such that its upper surface is close to being flush with the upper surface of the conveyor belt 50. The isolation belt 20 adheres to the upper surface of the light source 10, but does not contact the material 500 on the conveyor belt 50. In a second direction, the width of the isolation belt 20 is the same as the width of the light source 10, so that the isolation belt 20 can cover the upper surface of the light source 10.

[0059] For example, there are multiple first rollers 31 and multiple second rollers 32, each corresponding to a plurality of isolation strips 20. The plurality of first rollers 31 are spaced apart along a second direction, and the plurality of second rollers 32 are also spaced apart along a second direction. Each isolation strip 20 is tensioned between the corresponding first roller 31 and second roller 32.

[0060] The first rotating frame 33 is provided with a first rotating shaft 331, which is rotatably connected to the first rotating frame 33 and extends along a second direction. Each first roller 31 is coaxially connected to the first rotating shaft 331. The driving component 35 is a servo motor, and its output shaft is connected to the first rotating shaft 331 through a rotation transmission assembly. The driving component 35 drives the first rotating shaft 331 to rotate, thereby causing each first roller 31 to rotate synchronously.

[0061] The second rotating frame 34 is provided with a second rotating shaft 341, which is rotatably connected to the second rotating frame 34 and extends along a second direction. Each second roller 32 is coaxially connected to the second rotating shaft 341. When each first roller 31 rotates, the friction between each first roller 31, each second roller 32 and each isolation belt 20 causes each second roller 32 to rotate synchronously with each first roller 31.

[0062] It is worth noting that in the example of this application, each of the first rollers 31 and each of the second rollers 32 are driven by the same drive unit 35 as a power source, which simplifies the design of the power mechanism and reduces equipment costs. In other embodiments, each of the first rollers 31 and each of the second rollers 32 may also be driven by different power sources, as long as the effect of the first rollers 31 and the second rollers 32 working together to drive the isolation belt 20 to move can be achieved. This application does not impose any restrictions on this.

[0063] In the example of this application, during the transportation of material 500, the drive unit 35 is configured to operate continuously, causing the first roller 31 and the second roller 32 to continuously drive the isolation belt 20 in a cyclical motion. In other embodiments, the drive unit 35 may also be configured to operate periodically, or to operate triggered when debris is detected adhering to the isolation belt 20, causing the first roller 31 and the second roller 32 to drive the isolation belt 20 in a cyclical motion periodically or triggered by the application; this application does not impose any limitations on this.

[0064] Figure 6 A schematic diagram of the cleaning organization provided in this application.

[0065] Please refer to the following: Figure 6 In some embodiments, the light source assembly 100 further includes a cleaning mechanism 40, which is disposed below the light source 10. The isolation strip 20 passes at least partially through the cleaning mechanism 40, which is used to clean debris attached to the isolation strip 20, thereby cleaning the isolation strip 20.

[0066] For example, the cleaning mechanism 40 extends along the second direction, and each isolation zone 20 passes through the cleaning mechanism 40, so that the cleaning mechanism 40 can clean each isolation zone 20 simultaneously. In other embodiments, there may be multiple cleaning mechanisms 40, with each isolation zone 20 passing through a different cleaning mechanism 40; this application does not limit this.

[0067] In some embodiments, the cleaning mechanism 40 includes a support 41 and a scraper 42. The support 41 is disposed below the light source 10, and the scraper 42 is disposed on the support 41. The isolation strip 20 moves at least partially and passes over the scraper 42, which is used to scrape off debris attached to the isolation strip 20. The support 41 is provided with a receiving groove 411, which forms an opening on the upper surface of the support 41. The receiving groove 411 is located below the scraper 42 and is used to receive debris scraped off from the isolation strip 20.

[0068] Understandably, during the cyclical movement of the isolation belt 20, the portion of the isolation belt 20 located below the light source 10 can pass through the scraper 42, which scrapes off debris from the isolation belt 20, ensuring that the isolation belt 20 returns to the light source 10 in a clean state, thus avoiding debris residue caused by incomplete cleaning. Simultaneously, the debris scraped off by the scraper 42 can fall into the collection trough 411 for collection and centralized processing.

[0069] In some embodiments, the scraper 42 has a plurality of scraper members 42, which are divided into a first scraper member 421 and a second scraper member 422. The first scraper member 421 and the second scraper member 422 are spaced apart in a first direction to form a gap space through which the isolation strip 20 passes.

[0070] When the isolation strip 20 passes through the gap space, the first scraper 421 scrapes the lower surface of the isolation strip 20, and the second scraper 422 scrapes the upper surface of the isolation strip 20. Through the cooperation of the first scraper 421 and the second scraper 422, the upper and lower surfaces of the isolation strip 20 can be scraped respectively, achieving a thorough cleaning.

[0071] For example, the support 41 is provided with a base frame, which is disposed in the storage groove 411. The two ends of the base frame are respectively fixed to the support 41, and the upper surface of the base frame is exposed outside the groove of the storage groove 411. The first scraper 421 is fixed to the upper part of the base frame, and the upper part of the first scraper 421 has bristles. The isolation strip 20 passes over the base frame, and the first scraper 421 can scrape the lower surface of the isolation strip 20 through the bristles.

[0072] For example, the support 41 is also provided with a top frame 43, and the top frame 43 has columns 44 at both ends, which extend vertically. The lower end of the column 44 is disposed in the storage groove 411 and is fixedly connected to the support 41. The second scraper 422 is fixed to the bottom of the top frame 43, and the lower part of the second scraper 422 has bristles. The isolation strip 20 passes under the top frame 43, and the second scraper 422 can scrape the upper surface of the isolation strip 20 with the bristles.

[0073] In some embodiments, the top height of the first scraper 421 is greater than the bottom height of the second scraper 422, so that the projected portions of the first scraper 421 and the second scraper 422 overlap in the first direction.

[0074] When the isolation belt 20 passes through the gap space, the first scraper 421 and the second scraper 422 can cooperate to resist the upper and lower surfaces of the isolation belt 20 to form a pre-tightening force. The pre-tightening force ensures that the isolation belt 20 can make complete contact with the first scraper 421 and the second scraper 422, resulting in a more thorough cleaning effect.

[0075] It is worth noting that in the example of this application, the isolation strip 20 adopts a closed-loop ring structure. In other embodiments, the isolation strip 20 may also adopt a roll-up structure, for example, as shown in... Figure 7 As shown, the roller mechanism 30 includes a take-up drum 36, an unwind drum 37, and a drive member 35. The take-up drum 36 and the unwind drum 37 are spaced apart along a first direction, which is parallel to the transport direction of the material 500. The two ends of the isolation belt 20 are respectively wound around the take-up drum 36 and the unwind drum 37. The light source 10 is disposed below the isolation belt 20 and between the take-up drum 36 and the unwind drum 37. The drive member 35 is used to drive the take-up drum 36 and the unwind drum 37 to rotate, so that the isolation belt 20 can move to cover the upper surface of the light source 10.

[0076] The take-up drum 36 is located on the first roller 31 and can wind up the used isolation tape 20. The unwind drum 37 is located on the second roller 32 and can wind up the unused isolation tape 20. The first roller 31 and the second roller 32 drive the take-up drum 36 and the unwind drum 37 to rotate, so that the isolation tape 20 moves continuously and covers the upper surface of the light source 10. The used isolation tape 20 can also carry away any debris it has collected, preventing debris from remaining above the light source 10 and affecting the light effect.

[0077] This application also provides a transport device.

[0078] Figure 8 This is a schematic diagram of the structure of the transport line assembly and the light source provided in this application.

[0079] Please refer to the following: Figure 1 , Figure 2 and Figure 8 As shown, the transport device 300 includes a transport line assembly 200 and a light source assembly 100 as described in any of the above embodiments. The transport line assembly 200 includes a transport belt 50, a support platform 60, and a drive mechanism 70. The transport belt 50 is disposed on the support platform 60, and a first drive wheel 62 and a second drive wheel 63 are respectively disposed at both ends of the support platform 60. The two ends of the transport belt 50 are respectively wound around the first drive wheel 62 and the second drive wheel 63. The transport belt 50 is used to carry material 500; the drive mechanism 70 is used to drive the first drive wheel 62 and the second drive wheel 63 to rotate, thereby driving the transport belt 50 to move and transport material 500 along a first direction.

[0080] Multiple conveyor belts 50 are distributed at intervals in the second direction. Multiple light sources 10 are arranged side by side with the multiple conveyor belts 50, and are staggered in the second direction. Exemplarily, the multiple light sources 10 are distributed at intervals in the second direction, and a clearance space 21 is formed between two adjacent light sources 10, within which the conveyor belts 50 can be accommodated.

[0081] In this way, the horizontal positional interference between the conveyor belt 50 and the light source 10 can be eliminated, allowing the position of the light source 10 to be close to the level of the conveyor belt 50. On the one hand, this can shorten the distance between the light source 10 and the material 500 and improve the lighting effect. On the other hand, it can reduce the obstruction of the light source 10 by the conveyor belt 50 and make it easier to clean up the debris above the light source 10.

[0082] In some embodiments, each support platform 60 is configured with at least two conveyor belts 50, and the support platform 60 is provided with a receiving groove 61 in the space between two adjacent conveyor belts 50, the receiving groove 61 being used to receive the light source 10. Exemplarily, each support platform 60 is configured with two conveyor belts 50. At least two first drive wheels 62 are provided at one end of the support platform 60, and at least two second drive wheels 63 are provided at the other end of the support platform 60. The two ends of each conveyor belt 50 are respectively wound around the corresponding first drive wheel 62 and second drive wheel 63.

[0083] The two first drive wheels 62 are connected by a connecting shaft, and the two first drive wheels 62 are coaxially connected and rotate synchronously through the connecting shaft. The drive mechanism 70 is a servo motor, and the output shaft of the drive mechanism 70 is connected to the connecting shaft through a transmission assembly. The drive mechanism 70 drives the connecting shaft to rotate, thereby driving each first drive wheel 62 to rotate synchronously.

[0084] A receiving groove 61 is formed in the middle of the support platform 60, and the receiving groove 61 extends vertically through the upper and lower surfaces of the support platform 60. Two conveyor belts 50 are respectively located on both sides of the receiving groove 61 in the second direction. The light source 10, the isolation belt 20 covering the light source 10, the first roller 31 connected to the isolation belt 20, and the second roller 32 connected to the isolation belt 20 are all housed in the receiving groove 61.

[0085] The receiving slot 61 of the support platform 60 allows space to be provided between the two conveyor belts 50 for the light source 10 and the isolation belt 20, avoiding positional interference between the light source 10 and the support platform 60, and ensuring that the light source 10, the isolation belt 20 and the conveyor belt 50 can all work normally.

[0086] The support platform 60 can be used as a support structure for the light source 10. The side walls of the support platform 60 and the inner wall of the receiving groove 61 can be fixedly connected to the light source 10 to support the light source 10. In other embodiments, the light source 10 can also be configured with an independent support structure, and this application does not limit this.

[0087] In the example of this application, there are 5 light sources 10, 4 conveyor belts 50, and 2 support platforms 60. The two support platforms 60 are spaced apart in the second direction, and each support platform 60 is equipped with two conveyor belts 50 and two first drive wheels 62. The connecting shafts of all the first drive wheels 62 are coaxially fixed by couplings, so that the drive mechanism 70 can simultaneously drive all the first drive wheels 62 to rotate synchronously.

[0088] Two of the five light sources 10 are distributed on the side of the two support platforms 60 away from each other and fixed to the side wall of the support platform 60; the other two light sources 10 are distributed in the receiving grooves 61 of the two support platforms 60 and fixed to the inner wall of the receiving grooves 61; the remaining light source 10 is distributed in the gap between the two support platforms 60 and fixed to the side wall of the support platform 60.

[0089] It is understood that the number of light sources 10 and conveyor belts 50 can be adaptively adjusted according to actual needs such as the length of material 500 and the brightness of light. For example, when the material is long, the number of conveyor belts 50 can be increased, and the number of light sources 10 and support platforms 60 can be configured accordingly, as long as the effect of stable material transport and lighting can be achieved. This application does not impose any restrictions on this.

[0090] Figure 9 The working principle diagram of the negative pressure chamber provided in this application.

[0091] Please refer to the following: Figure 9In some embodiments, the support platform 60 has a built-in negative pressure chamber 64, and the conveyor belt 50 has a plurality of adsorption holes 51 for communicating with the negative pressure chamber 64. When the conveyor belt 50 carries material 500, the negative pressure chamber 64 is used to provide negative pressure and adsorb material 500 through the adsorption holes 51.

[0092] For example, the support platform 60 has a hollow interior forming a negative pressure chamber 64, and an air nozzle connected to the negative pressure chamber 64 is provided on the side of the support platform 60. The air nozzle is used to connect to an external air extraction device. The upper surface of the support platform 60 has a plurality of through holes 65 connected to the negative pressure chamber 64, and the plurality of through holes 65 are distributed at the location of the conveyor belt 50.

[0093] When the conveyor belt 50 carries and transports the material 500, as the conveyor belt 50 moves, the adsorption holes 51 on the conveyor belt 50 can overlap with the perforations 65. By extracting the gas in the negative pressure chamber 64 through the air extraction device, a negative pressure can be formed at each adsorption hole 51 to adsorb the material 500 onto the conveyor belt 50, reducing the risk of the material 500 falling off during transportation. Especially in the transportation scenario of thin and high aspect ratio battery wafers (such as silicon wafers), it can significantly reduce the breakage rate and effectively improve the wafer formation rate.

[0094] This application also provides a testing device.

[0095] like Figure 1 As shown, the detection equipment includes an imaging device 400 and a transport device 300 as described in any of the above embodiments. The imaging device 400 is used to photograph the material 500 on the transport device 300 under the illumination provided by the light source assembly 100. Exemplarily, the imaging device 400 is a CCD camera, and the imaging device 400 is located above the light source assembly 100.

[0096] The light source assembly 100 provides the necessary illumination for the imaging device 400 to capture and inspect images, ensuring sufficient and uniform light shines on the material 500 so that the imaging device 400 can capture high-quality images. These images can clearly capture minute surface defects on the material 500, allowing for timely detection and screening of problematic materials 500, preventing unqualified products from entering subsequent processing stages, thereby ensuring the quality and performance of the finished solar cells.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A light source assembly, characterized in that, The light source assembly is used in conjunction with the transport line assembly, which is used to carry and transport materials. The light source assembly includes: light source; The isolation strip is made of a light-transmitting material and at least partially covers the upper surface of the light source; when the material moves over the light source, the light source illuminates the material through the isolation strip. A roller mechanism is provided, wherein the isolation belt is tensioned and disposed on the roller mechanism; the roller mechanism is used to tension and transport the isolation belt so that the isolation belt moves continuously and covers the upper surface of the light source.

2. The light source assembly according to claim 1, characterized in that, The roller mechanism includes a first roller, a second roller, and a driving component. The first roller and the second roller are spaced apart along a first direction, which is parallel to the transport direction of the material. The isolation belt is annular, with its two ends wrapped around the first roller and the second roller, respectively. The light source is disposed inside the isolation belt and located between the first roller and the second roller. The driving component is used to drive the first roller and the second roller to rotate, so that the isolation belt can move to cover the upper surface of the light source.

3. The light source assembly according to claim 1, characterized in that, The roller mechanism includes a take-up drum, an unwind drum, and a drive component. The take-up drum and the unwind drum are spaced apart along a first direction, which is parallel to the transport direction of the material. The two ends of the isolation belt are respectively wound around the take-up drum and the unwind drum. The light source is located below the isolation belt and between the take-up drum and the unwind drum. The drive unit is used to drive the take-up drum and the unwind drum to rotate, so that the isolation belt can move to cover the upper surface of the light source.

4. The light source assembly according to claim 1, characterized in that, The light source assembly further includes a cleaning mechanism; the cleaning mechanism includes a support and a scraper, the support is disposed below the light source, and the scraper is disposed on the support; the isolation strip moves at least partially and passes through the scraper, and the scraper is used to scrape off debris attached to the isolation strip.

5. The light source assembly according to claim 4, characterized in that, The scraper has multiple components, which are divided into a first scraper and a second scraper. The first and second scraper are spaced apart in a first direction to form a gap space for the isolation belt to pass through. The first direction is parallel to the transport direction of the material. When the isolation belt passes through the gap space, the first scraper scrapes the lower surface of the isolation belt, and the second scraper scrapes the upper surface of the isolation belt.

6. The light source assembly according to claim 5, characterized in that, The top height of the first scraper is greater than the bottom height of the second scraper, so that the projected portions of the first and second scrapers in the first direction overlap.

7. The light source assembly according to claim 4, characterized in that, The support is provided with a storage groove located below the scraper, and the storage groove is used to collect debris scraped off from the isolation strip.

8. The light source assembly according to any one of claims 1 to 7, characterized in that, The light source has multiple light sources, which are spaced apart in the second direction. A clearance space is formed between two adjacent light sources for at least partial accommodation by the transport line assembly. The second direction has an angle with the transport direction of the material.

9. A transport device, characterized in that, Includes the transport line assembly and the light source assembly as described in any one of claims 1 to 7; The transport line assembly includes a transport belt, a support platform, and a drive mechanism, wherein a first drive wheel and a second drive wheel are respectively provided at both ends of the support platform, and the two ends of the transport belt are respectively wound around the first drive wheel and the second drive wheel; The conveyor belt is used to carry the material; the drive mechanism is used to drive the first drive wheel and the second drive wheel to rotate, so as to drive the conveyor belt to move and transport the material along the first direction.

10. The transport device according to claim 9, characterized in that, The conveyor belts are multiple and spaced apart in the second direction; The light source has multiple components, and the multiple light sources and multiple conveyor belts are arranged side by side and staggered in the second direction, with the first direction and the second direction having an angle.

11. The transport device according to claim 9, characterized in that, Each of the support platforms is provided with at least two of the conveyor belts, and the support platform is provided with a receiving groove in the space between two adjacent conveyor belts, the receiving groove being used to receive the light source.

12. The transport device according to claim 9, characterized in that, The support platform has a built-in negative pressure chamber, and the conveyor belt has multiple adsorption holes for communicating with the negative pressure chamber; when the conveyor belt carries the material, the negative pressure chamber is used to provide negative pressure and adsorb the material through the adsorption holes.

13. A testing device, characterized in that, The device includes a camera and a transport device as described in any one of claims 9 to 12; the camera is used to photograph the material on the transport device under the illumination provided by the light source assembly.

Images