Battery piece conveying and screening device
The automated detection and sorting of solar cells by the solar cell conveying and screening device solves the problem of sorting out defective products during the solar cell conveying process, improves production efficiency and reduces costs, and ensures the sequential arrangement of solar cells.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI AUTOWELL TECH
- Filing Date
- 2025-03-31
- Publication Date
- 2026-04-17
AI Technical Summary
In the existing technology, the detection and sorting of defective solar cells during transportation and stringing are complicated, which increases the complexity and cost of production equipment and can easily disrupt the arrangement of solar cells.
A cell conveying and screening device is adopted, including a conveying mechanism, a detection mechanism, a storage mechanism, and a rejection mechanism. The conveying mechanism conveys the cell packs step by step, the detection mechanism determines whether the cells meet the standards, the storage mechanism stores the compliant and non-compliant cells separately, and the rejection mechanism removes and stores the non-compliant cells to ensure that the order of the cells is not disrupted.
It enables automated conveying, detection, and sorting of solar cells, improving production efficiency, reducing manual sorting workload, lowering operational complexity and costs, and ensuring that the arrangement order of solar cells is not disrupted.
Smart Images
Figure CN224127942U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of solar cell processing, and more specifically, to a solar cell conveying and screening device. Background Technology
[0002] The back-contact battery strings feature a two-piece design, where the battery cells are split into A-pieces and B-pieces and sequentially conveyed onto the battery cell conveyor line. During conveying, the battery cells undergo visual inspection to remove defective ones. Since the battery cells must be arranged in the order A, B, A, B… on the conveyor line and during stringing, if one A-piece is detected as defective, both the A-piece and its paired B-piece must be removed simultaneously to ensure that the arrangement order of the battery cells is not disrupted.
[0003] In existing technologies, two boxes are typically used to store the removed A-pieces and their paired B-pieces respectively. Specifically, a conveying mechanism places the removed A-pieces and B-pieces (containing defective pieces) into the two boxes. Since some A-pieces and some B-pieces in a pair are defective, the box containing A-pieces will contain both good and defective pieces, and the box containing B-pieces will also contain both good and defective pieces. However, in actual production, the good pieces still need to be reused. Therefore, manual sorting of the cells in the two boxes or sorting using a specialized cell sorting and inspection structure is required, increasing the complexity of the operation and production equipment, and raising production costs. Utility Model Content
[0004] To solve the above-mentioned technical problems, this application provides a battery cell conveying and sorting device, which adopts the following technical solution:
[0005] A solar cell conveying and screening device includes a conveying mechanism, a detection mechanism, a storage mechanism, and a rejection mechanism, wherein:
[0006] The conveying mechanism is configured to step-convey at least one set of battery cell groups along a first direction, each set of battery cell groups including a pair of battery cells, the two battery cells being a first battery cell and a second battery cell arranged in sequence;
[0007] The testing mechanism is configured to determine whether the first and second cells in each cell group on the conveying mechanism meet the standards, and cell groups in which the first and / or second cells are found to be substandard are abnormal cell groups.
[0008] The storage mechanism includes a first storage component and a second storage component located on both sides of the conveying mechanism. The first storage component is used to store the first and second non-compliant battery cells in each abnormal battery cell group, and the second storage component is used to store the first and second compliant battery cells in each abnormal battery cell group.
[0009] The rejection mechanism includes a mounting frame and a first drive assembly and a pickup assembly mounted on the mounting frame. The pickup assembly is configured to simultaneously pick up a first and a second battery cell from an abnormal battery cell group on a conveyor mechanism.
[0010] The first drive assembly is configured to drive the pickup assembly to move between the first storage assembly, the conveying mechanism, and the second storage assembly, so that the pickup assembly delivers substandard cells into the first storage assembly and delivers compliant cells from each abnormal cell group into the second storage assembly.
[0011] The solar cell conveying and screening device provided in this application conveys solar cell groups by a conveying mechanism; determines whether the solar cells meet the standards by a detection mechanism; stores compliant and non-compliant solar cells by a first storage component and a second storage component; and sends non-compliant solar cells into the first storage component and compliant solar cells into the second storage component by a rejection mechanism.
[0012] As can be seen, the solar cell conveying and screening device provided in this application achieves automatic conveying and inspection of solar cells through the cooperation of the conveying mechanism and the inspection mechanism, thereby improving production efficiency. The first and second solar cells that do not meet the standards in each abnormal solar cell group are stored separately in the first storage component, and the first and second solar cells that meet the standards in each abnormal solar cell group are stored separately in the second storage component, which facilitates subsequent processing and management. The rejection mechanism can remove the first and second solar cells in the abnormal solar cell group from the conveying mechanism, reducing interference with subsequent production processes.
[0013] Optionally, the distance from the first storage component to the conveying mechanism is the same as the distance from the second storage component to the conveying mechanism. The picking component includes a first picker and a second picker, which are used to pick up the first and second battery cells in the abnormal battery cell group, respectively.
[0014] The mounting bracket is provided with a first guide rail and a second guide rail that are parallel to each other along the second direction. The first pickup is slidably mounted on the first guide rail, and the second pickup is slidably mounted on the second guide rail. The second direction is perpendicular to the first direction on the horizontal plane.
[0015] The first drive assembly includes a timing belt and a first drive member. The timing belt is horizontally mounted on a mounting bracket. The first drive member is driven to connect with the timing belt. A first pickup and a second pickup are fixedly connected to the two sides of the timing belt, respectively. The first drive member is configured to drive the timing belt to rotate so that the first pickup and the second pickup move in opposite directions.
[0016] The first and second storage components are at the same distance from the conveying mechanism, making the movement path of the picking components symmetrical and improving the stability and efficiency of the operation. The first and second pickers are used to pick up the first and second battery cells respectively, realizing the simultaneous processing of different battery cells in the abnormal battery cell group. The first and second pickers are fixedly connected to the two sides of the synchronous belt respectively, realizing the synchronous reverse movement of the first and second pickers, improving the coordination and efficiency of the operation.
[0017] Optionally, the first pickup includes a first carrier frame and a second drive member and a first adsorption member disposed on the first carrier frame. The first carrier frame is slidably mounted on a first guide rail. The second drive member is configured to drive the first adsorption member to rise and fall. The first adsorption member is configured to adsorb or release the first battery cell.
[0018] The second pickup includes a second carrier frame, a third driving member and a second adsorption member disposed on the second carrier frame. The second carrier frame is slidably mounted on a second guide rail. The third driving member is configured to drive the second adsorption member to rise and fall. The second adsorption member is configured to adsorb or release the second battery cell.
[0019] The first pickup uses a first adsorption element to adsorb or release the first battery cell, and the second pickup uses a second adsorption element to adsorb or release the second battery cell. The first and second pickups have clear division of labor and compact structure, making them suitable for adsorbing or releasing the first and second battery cells in a limited space.
[0020] Optionally, the first adsorption element is provided with at least one first adsorption structure, and the second adsorption element is provided with at least one second adsorption structure; the first adsorption structure and the second adsorption structure are suction cups or adsorption holes.
[0021] The design of the first and second adsorption structures optimizes the adsorption and release process, improving operational efficiency. Furthermore, the first and second adsorption structures provide diverse adsorption methods for the design of suction cups or adsorption holes, allowing for the selection of appropriate adsorption structures based on actual needs.
[0022] Optionally, a first sensor is mounted on the first pickup, and the first sensor is configured to detect whether the first pickup has picked up the first battery cell.
[0023] A second sensor is installed on the second pickup, and the second sensor is configured to detect whether the second pickup has picked up a second battery cell.
[0024] The first / second sensor can detect in real time whether the first / second battery cell is on the first / second pickup, ensuring the accuracy and safety of the operation; through the feedback of the first / second sensor, abnormal situations in the pickup process can be detected in a timely manner, and fault warnings and handling can be carried out.
[0025] Optionally, the rejection mechanism may also include a suspension, which is fixedly installed; the mounting bracket is slidably installed along the first direction or detachably installed at the lower end of the suspension.
[0026] The mounting bracket can be slidably or detachably mounted on the suspension, allowing it to move back and forth in the first direction, i.e., along the conveying direction of the conveying mechanism, to accommodate battery cells of different sizes.
[0027] Optionally, the first storage component includes a first and a second material box arranged side by side.
[0028] The first picker is configured to move the first non-compliant cell in the abnormal cell group to the first cassette and release it into the first cassette.
[0029] The second picker is configured to move the non-compliant second cell from the abnormal cell group to the second cassette and release it into the second cassette.
[0030] The design of the first and second material boxes allows for the separate storage of substandard first and second battery cells, facilitating subsequent processing and management. The first / second picker directly moves the substandard first / second battery cells to the corresponding first / second material box, reducing intermediate steps and improving operational efficiency. The side-by-side arrangement of the first and second material boxes simplifies the structure and facilitates installation and maintenance.
[0031] Optionally, the second storage component includes a conveying track, a first material basket and a second material basket. The conveying track is sequentially provided with a loading position, a first storage position and a second storage position. The first material basket is located at the first storage position and the second material basket is located at the second storage position.
[0032] The picking component is configured to move and release the first qualified cell in the abnormal cell group to the loading position, and the conveying track is configured to convey the first cell at the loading position to the first basket at the first storage position;
[0033] The picking component is configured to move and release the qualified second cell from the abnormal cell group to the loading position, and the conveying track is configured to convey the second cell at the loading position to the second basket at the second storage position.
[0034] By coordinating the conveyor track and the first / second material baskets, the automatic storage of qualified first / second solar cells is achieved, reducing manual intervention; the qualified first / second solar cells stored in the first / second material baskets can still be reused.
[0035] Optionally, the first basket includes a hopper and a fourth drive unit, wherein:
[0036] The hopper includes a base, a first hopper plate, and a second hopper plate. The first hopper plate and the second hopper plate are installed on opposite sides of the base. The inner sidewall of the first hopper plate is provided with multiple first support members arranged parallel from top to bottom and spaced apart. The inner sidewall of the second hopper plate is provided with second support members that correspond one-to-one with each of the first support members. Each first support member and its corresponding second support member are arranged opposite each other in the same horizontal plane to jointly support a battery cell.
[0037] The hopper straddles the conveyor track, and the two ends of the battery cell protrude from the conveyor track along the width direction of the conveyor track. The distance between each first support member and the corresponding second support member is greater than the width of the conveyor track and less than the length of the battery cell.
[0038] The fourth drive unit is configured to drive the hopper to rise step by step, so that the first qualified cell in each abnormal cell group is carried from top to bottom by the first and second supports of each group.
[0039] The structure of the second material basket is the same as that of the first material basket. The second material basket is used to carry the qualified second solar cells in each abnormal solar cell group from top to bottom.
[0040] By setting several sets of one-to-one corresponding first and second support members along the height direction in the hopper, the hopper straddles the conveyor track and is driven upward by the fourth drive member, so that the hopper can carry several battery cells from top to bottom, realizing automatic storage of battery cells and improving operational efficiency; and, due to the design of the first and second support members, there are gaps between adjacent battery cells in the hopper, so there is no need to lay isolation paper between the battery cells, thus avoiding damage to the blue film surface.
[0041] Optionally, a testing station may be provided on the conveying mechanism;
[0042] The testing mechanism includes a light source and a testing component. The light source is located below the testing station of the conveying mechanism and is configured to illuminate the battery cells located at the testing station. The testing component is configured to detect whether the battery cells illuminated by the light source meet the standards.
[0043] The combination of the light source and the detection components enables the detection of solar cells during the transportation process, reducing detection time and improving production efficiency; the illumination from the light source allows the detection components to more accurately determine whether the solar cells meet the standards, reducing detection errors.
[0044] Optionally, the detection components include a camera and a PL detector, wherein:
[0045] The camera is used to capture images of the surface of the battery cells;
[0046] The PL detector is used to excite electrons within the solar cell and detect the photoluminescence signal of the solar cell.
[0047] The combination of camera and PL detector enables comprehensive inspection of the surface and interior of the solar cells, improving the accuracy of the inspection; the dual detection of surface images and photoluminescence signals reduces the possibility of missed detections and ensures the quality of the solar cells.
[0048] Compared with the prior art, the beneficial effects of the technical solution of this application are:
[0049] This application provides a solar cell conveying and screening device. Through the coordinated operation of a conveying mechanism, a detection mechanism, a storage mechanism, and a rejection mechanism, this device can automatically complete the conveying, detection, sorting, and storage of solar cells, significantly improving screening efficiency. During conveying and stringing, the solar cells need to be arranged sequentially. When a substandard solar cell is detected in a cell group, the rejection mechanism can simultaneously remove it and its paired cells, ensuring that the cell arrangement order is not disrupted and avoiding confusion in subsequent processes. The rejection mechanism, through the cooperation of a first driving component and a picking component, can pick up solar cells from the abnormal cell group and place them into a first storage component and a second storage component, achieving automated operation and reducing human error and operation time. This application uses the first and second storage components to separately store substandard and compliant solar cells in the abnormal cell group, reducing the workload of manual sorting and lowering operational complexity and labor costs. Attached Figure Description
[0050] Figure 1 This is a schematic diagram of the battery cell conveying and sorting device in an embodiment of this application from a first-view perspective.
[0051] Figure 2 This is a schematic diagram of the battery cell conveying and sorting device in the embodiment of this application from a second perspective.
[0052] Figure 3 This is a schematic diagram showing the positional relationship between the conveying mechanism, the first storage component, and the rejection mechanism in the battery cell conveying and sorting device of this application embodiment;
[0053] Figure 4 This is a schematic diagram of the structure of the second storage component in the battery cell conveying and sorting device in the embodiments of this application;
[0054] Figure 5This is a schematic diagram of the rejection mechanism in the battery cell conveying and screening device in the embodiments of this application;
[0055] Figures 1 to 5 Includes:
[0056] Conveying mechanism 1;
[0057] Testing unit 2, light source 21, testing component 22, camera 221, PL detector 222;
[0058] Storage mechanism 3:
[0059] First storage component 31, first material box 311, second material box 312,
[0060] Second storage component 32, conveying track 321, first basket 322, hopper 3221, first support component 32211, second support component 32212, fourth drive component 3222, second basket 323;
[0061] Rejection mechanism 4:
[0062] Mounting bracket 41, first guide rail 411, second guide rail 412,
[0063] First drive component 42, synchronous belt 421, first drive element 422
[0064] Pickup assembly 43, first pickup 431, first support frame 4311, first adsorption element 4312, first sensor 4313, second pickup 432, second support frame 4321, second adsorption element 4322, second sensor 4323,
[0065] Suspension 44. Detailed Implementation
[0066] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0067] like Figure 1-2 As shown, a solar cell conveying and screening device includes a conveying mechanism 1, a detection mechanism 2, a storage mechanism 3, and a rejection mechanism 4, wherein:
[0068] The conveying mechanism 1 is configured to move along a first direction (e.g.) Figure 1 The X-direction shown in the figure indicates that at least one set of battery cell groups is conveyed in a step-by-step manner. Each set of battery cell groups includes a pair of battery cells, which are a first battery cell and a second battery cell arranged in sequence. For example, on the conveying mechanism 1, a first battery cell, a second battery cell, a first battery cell, a second battery cell, a first battery cell, a second battery cell, a first battery cell, a second battery cell, a first battery cell, a second battery cell, a second battery cell, a first battery cell, a second battery cell, and so on are arranged in sequence along the first direction.
[0069] The detection mechanism 2 is configured to determine whether the first and second cells in each cell group on the conveying mechanism 1 meet the standards. A cell group in which both the first and second cells meet the standards is a normal cell group, and a cell group in which the first cell and / or the second cell do not meet the standards is an abnormal cell group. In other words, if any one of the first and second cells in a cell group does not meet the standards, or if neither of them does, then the cell group is an abnormal cell group.
[0070] Storage mechanism 3 includes a first storage component 31 and a second storage component 32 located on both sides of conveying mechanism 1. The first storage component 31 is used to store the first and second batteries that do not meet the standards in each abnormal battery cell group, and the second storage component 32 is used to store the first and second batteries that meet the standards in each abnormal battery cell group.
[0071] The rejection mechanism 4 includes a mounting frame 41 and a first drive assembly 42 and a pickup assembly 43 mounted on the mounting frame 41. The pickup assembly 43 is configured to simultaneously pick up the first and second battery cells in the abnormal battery cell group on the conveying mechanism 1.
[0072] The first drive assembly 42 is configured to drive the pickup assembly 43 to move between the first storage assembly 31, the conveying mechanism 1, and the second storage assembly 32, so that the pickup assembly 43 delivers substandard battery cells into the first storage assembly 31 and delivers compliant battery cells from each abnormal battery cell group into the second storage assembly 32.
[0073] The working process of the solar cell conveying and sorting device provided in this application includes:
[0074] m groups of battery cells are conveyed in a stepping manner along the first direction by the conveying mechanism 1, where m ≥ 1, and each group of battery cells includes a first battery cell and a second battery cell arranged in sequence.
[0075] The detection mechanism 2 sequentially detects whether the first and second battery cells in each battery cell group on the conveying mechanism 1 meet the standards, and battery cell groups in which the first and / or second battery cells are found to be substandard are identified as abnormal battery cell groups.
[0076] When the detection mechanism 2 detects an abnormal battery cell group on the conveying mechanism 1, it simultaneously picks up two battery cells (the first battery cell and the second battery cell) from the abnormal battery cell group on the conveying mechanism 1 through the picking component 43, and sends the substandard battery cell from the abnormal battery cell group into the first storage component 31, and the qualified battery cell into the second storage component 32.
[0077] The solar cell conveying and screening device provided in this application conveys solar cell groups by a conveying mechanism 1; determines whether the solar cells meet the standards by a detection mechanism 2; stores compliant and non-compliant solar cells by a first storage component 31 and a second storage component 32; and sends non-compliant solar cells into the first storage component 31 and compliant solar cells into the second storage component 32 by a rejection mechanism 4.
[0078] As can be seen, by using the cell conveying and screening device provided in this application, the automatic conveying and detection of cells are achieved through the cooperation of the conveying mechanism 1 and the detection mechanism 2, thereby improving production efficiency. The first and second cells that do not meet the standards in each abnormal cell group are stored separately in the first storage component 31, and the first and second cells that meet the standards in each abnormal cell group are stored separately in the second storage component 32, which facilitates subsequent processing and management. The rejection mechanism 4 can remove the first and second cells in the abnormal cell group from the conveying mechanism 1, reducing interference with the subsequent production process.
[0079] Optionally, the conveying mechanism 1 includes a conveyor belt and a driver, the driver being used to provide power to the conveyor belt; a plurality of battery cell packs are placed on the conveyor belt along a first direction, the conveyor belt being configured to step along the first direction to convey the plurality of battery cell packs placed on the conveyor belt.
[0080] The conveying mechanism 1 also includes a PLC, an encoder, and a photoelectric sensor. The driver includes a stepper motor and a drive roller. The stepping conveyor belt is realized through the stepper motor, the drive roller, and the encoder. The stepper motor receives pulse signals from the PLC and rotates at a fixed angle with each pulse, driving the drive roller to move the conveyor belt precisely a preset distance. The encoder provides feedback on position information to ensure stepping accuracy. The photoelectric sensor detects the material position and triggers the next action.
[0081] Optionally, the conveying mechanism 1 is configured to advance one group of battery cells (first battery cell and second battery cell) each time along the first direction; that is, each group of battery cells moves forward along the first direction to the position of the previous group of battery cells each time.
[0082] Optional, such as Figure 2 As shown, the distance from the first storage component 31 to the conveying mechanism 1 is the same as the distance from the second storage component 32 to the conveying mechanism 1. The picking component 43 includes a first picker 431 and a second picker 432. The first picker 431 and the second picker 432 are respectively used to pick up the first battery cell and the second battery cell in the abnormal battery cell group.
[0083] like Figure 2 and Figure 5 As shown, the mounting bracket 41 is provided with a second direction (e.g., Figure 1The first guide rail 411 and the second guide rail 412 (shown in the Y direction) are set and parallel to each other. The first pickup 431 is slidably mounted on the first guide rail 411, and the second pickup 432 is slidably mounted on the second guide rail 412. The second direction is perpendicular to the first direction on the horizontal plane.
[0084] like Figure 3 As shown, the first drive assembly 42 includes a timing belt 421 and a first drive member 422. The timing belt 421 is horizontally mounted on the mounting bracket 41. The first drive member 422 is drivenly connected to the timing belt 421. The first pickup 431 and the second pickup 432 are respectively fixedly connected to the two sides of the timing belt 421. The first drive member 422 is configured to drive the timing belt 421 to rotate, so that the first pickup 431 and the second pickup 432 move in opposite directions.
[0085] Optionally, the first drive component 422 can be selected by those skilled in the art according to production needs; for example, a servo motor can be selected.
[0086] The first storage component 31 and the second storage component 32 are at the same distance from the conveying mechanism 1, making the movement path of the picking component 43 symmetrical and improving the stability and efficiency of the operation. The first picker 431 and the second picker 432 are used to pick up the first battery cell and the second battery cell respectively, realizing the simultaneous processing of different battery cells in the abnormal battery cell group. The first picker 431 and the second picker 432 are fixedly connected to the two sides of the synchronous belt 421 respectively, realizing the synchronous reverse movement of the first picker 431 and the second picker 432, improving the coordination and efficiency of the operation.
[0087] Optional, please continue reading Figure 2 and Figure 5 The first pickup 431 includes a first support frame 4311 and a second drive member and a first adsorption member 4312 disposed on the first support frame 4311. The first support frame 4311 is slidably mounted on the first guide rail 411. The second drive member is configured to drive the first adsorption member 4312 to rise and fall. The first adsorption member 4312 is configured to adsorb or release the first battery cell.
[0088] The second pickup 432 includes a second support frame 4321 and a third driving member and a second adsorption member 4322 disposed on the second support frame 4321. The second support frame 4321 is slidably mounted on the second guide rail 412. The third driving member is configured to drive the second adsorption member 4322 to rise and fall. The second adsorption member 4322 is configured to adsorb or release the second battery cell.
[0089] The first pickup 431 uses the first adsorption element 4312 to adsorb or release the first battery cell, and the second pickup 432 uses the second adsorption element 4322 to adsorb or release the second battery cell. The first pickup 431 and the second pickup 432 have clear division of labor and compact structure, which is suitable for adsorbing or releasing the first battery cell and the second battery cell in a limited space. Furthermore, the first guide rail 411 can support the weight of the first pickup 431 and provide guidance, and the second guide rail 412 can support the weight of the second pickup 432 and provide guidance.
[0090] Optionally, the first pickup 431 and the second pickup 432 are initially positioned side by side directly above the conveying mechanism 1. Those skilled in the art can adjust the distance between the first pickup 431 and the second pickup 432 according to actual production needs, so that the first pickup 431 and the second pickup 432 can pick up one of the two paired battery cells in the battery cell group directly below.
[0091] For example, the operation of the first pickup 431 and the second pickup 432 can be as follows:
[0092] When the testing mechanism 2 detects an abnormal battery cell group, and only one of the two cells in the abnormal battery cell group meets the standard while the other does not, the conveying mechanism 1 conveys the abnormal battery cell group to directly below the first pickup 431 and the second pickup 432. The battery cell directly below the first pickup 431 is the non-compliant battery cell, and the battery cell directly below the second pickup 432 is the compliant battery cell. The first pickup 431 and the second pickup 432 descend and pick up the battery cell directly below them. The first pickup 431 moves the non-compliant battery cell forward along the second direction to directly above the first storage component 31, while the second pickup 432 simultaneously moves the compliant battery cell backward along the second direction to directly above the second storage component 32. The first pickup 431 and the second pickup 432 descend and release the battery cell, and then the first pickup 431 and the second pickup 432 return to their initial positions.
[0093] Similarly, if the battery cell directly below the first pickup 431 is a qualified battery cell and the battery cell directly below the second pickup 432 is a substandard battery cell, the first pickup 431 will move the qualified battery cell in the reverse direction along the second direction to above the second storage component 32, while the second pickup 432 will move the substandard battery cell in the forward direction along the second direction to above the first storage component 31.
[0094] When the detection mechanism 2 detects an abnormal battery cell group, and both battery cells in the abnormal battery cell group are substandard, the conveying mechanism 1 conveys the abnormal battery cell group to directly below the first picker 431 and the second picker 432. After the first picker 431 and the second picker 432 pick up one battery cell from the abnormal battery cell group, the first picker 431 first puts the substandard battery cell into the first storage component 31, and then moves in the opposite direction to above the second storage component 32, so that the second picker 432 moves above the first storage component 31 and performs the feeding action. Then the first picker 431 and the second picker 432 return to their initial positions.
[0095] Optionally, the first adsorption member 4312 is provided with at least one first adsorption structure, and the second adsorption member 4322 is provided with at least one second adsorption structure; the first adsorption structure and the second adsorption structure are suction cups or adsorption holes.
[0096] The design of the first and second adsorption structures optimizes the adsorption and release process, improving operational efficiency. Furthermore, the first and second adsorption structures provide diverse adsorption methods for the design of suction cups or adsorption holes, allowing for the selection of appropriate adsorption structures based on actual needs.
[0097] Optional, please continue reading Figure 5 A first sensor 4313 is installed on the first pickup 431. The first sensor 4313 is configured to detect whether the first pickup 431 has picked up the first battery cell.
[0098] A second sensor 4323 is mounted on the second pickup 432. The second sensor 4323 is configured to detect whether the second pickup 432 has picked up a second battery cell.
[0099] Optionally, the model of the first sensor 4313 / second sensor 4323 can be selected according to production needs. For example, position sensors such as photoelectric sensors, infrared sensors, proximity sensors, and ultrasonic sensors can be selected.
[0100] The first sensor 4313 and the second sensor 4323 can detect in real time whether there is a first battery cell or a second battery cell on the first pickup 431 and the second pickup 432, ensuring the accuracy and safety of the operation; through the feedback of the first sensor 4313 and the second sensor 4323, abnormal situations in the pickup process can be detected in time, and fault warnings and handling can be carried out.
[0101] Optional, please continue reading Figure 5 The material rejection mechanism 4 also includes a suspension 44, which is fixedly installed; the mounting bracket 41 is slidably installed along the first direction or detachably installed at the lower end of the suspension 44.
[0102] The mounting bracket 41 can be slidably or detachably mounted on the suspension 44, so that the mounting bracket 41 can move back and forth along the first direction, that is, along the conveying direction of the conveying mechanism 1, to accommodate battery cells of different sizes.
[0103] Optional, such as Figure 3 As shown, the first storage component 31 includes a first material box 311 and a second material box 312 arranged side by side along a first direction.
[0104] The first picker 431 is configured to move the first non-compliant cell in the abnormal cell group to the first cassette 311 and release it into the first cassette 311.
[0105] The second picker 432 is configured to move the substandard second cell in the abnormal cell group to the second cassette 312 and release it into the second cassette 312.
[0106] The design of the first material box 311 and the second material box 312 allows the substandard first and second battery cells to be stored separately, which facilitates subsequent processing and management. The first / second picker 432 directly moves the substandard first / second battery cells to the corresponding first / second material box 312, reducing intermediate steps and improving operational efficiency. The side-by-side arrangement of the first material box 311 and the second material box 312 has a simple structure and is easy to install and maintain.
[0107] Optional, such as Figure 4 As shown, the second storage component 32 includes a conveyor track 321, a first material basket 322, and a second material basket 323.
[0108] The conveyor track 321 is provided with a loading position, a first storage position and a second storage position in sequence. The first material basket 322 is located at the first storage position and the second material basket 323 is located at the second storage position.
[0109] Please continue reading. Figure 1-2 The picking component 43 is configured to move and release the first qualified cell in the abnormal cell group to the loading position, and the conveying track 321 is configured to convey the first cell at the loading position to the first material basket 322 at the first storage position.
[0110] Pick-up component 43 is configured to move and release the qualified second cell in the abnormal cell group to the loading position, and conveyor track 321 is configured to convey the second cell at the loading position to the second basket 323 in the second storage position.
[0111] By cooperating with the conveyor track 321 and the first / second material basket 323, the automatic storage of qualified first / second solar cells is achieved, reducing manual intervention; the qualified first / second solar cells stored in the first / second material basket 323 can still be reused.
[0112] Optional, please continue reading Figure 4 The first basket 322 includes a hopper 3221 and a fourth drive unit 3222, wherein:
[0113] The hopper 3221 includes a base, a first hopper plate, and a second hopper plate. The first hopper plate and the second hopper plate are installed on opposite sides of the base. The inner sidewall of the first hopper plate is provided with a plurality of first support members 32211 arranged parallel from top to bottom and spaced apart. The inner sidewall of the second hopper plate is provided with second support members 32212 that correspond one-to-one with each of the first support members 32211. Each first support member 32211 and the corresponding second support member 32212 are arranged opposite each other in the same horizontal plane to jointly support a battery cell.
[0114] The hopper 3221 straddles the conveying track 321. The two ends of the battery cell in the length direction protrude from the conveying track 321 in the width direction of the conveying track 321. The distance between each first support member 32211 and the corresponding second support member 32212 is greater than the width of the conveying track 321 and less than the length of the battery cell.
[0115] The fourth drive unit 3222 is configured to drive the material bin 3221 to rise step by step, so that the first qualified cell in each abnormal cell group is carried from top to bottom by the first support member 32211 and the second support member 32212 of each group.
[0116] Optionally, the fourth drive element 3222 can be selected by those skilled in the art according to production needs. For example, an electric cylinder can be selected as the fourth drive element 3222, and the fourth drive element 3222 is configured to drive the lifting of the hopper 3221.
[0117] For ease of description, the inner wall of the first compartment plate is provided with i first support members 32211 parallel from top to bottom and spaced at intervals, and the inner wall of the second compartment plate is provided with i second support members 32212 corresponding one-to-one with each first support member 32211, where i is a positive integer greater than or equal to 1.
[0118] The nth first support member 32211 and the corresponding nth second support member 32212 (set opposite to each other in the same horizontal plane) are regarded as the nth group of support members, 1≤n≤i, and n is a positive integer;
[0119] The first basket 322 receives solar cells sequentially from top to bottom. The fourth drive unit 3222 first lowers the first basket 322 to its lowest position, so that the upper surface of the first set of support members at the top is lower than the conveying surface of the conveying track 321. When the solar cell moves above the set of support members, the fourth drive unit 3222 raises the basket to a predetermined height, and the first set of support members lifts the first solar cell on the conveying track 321 upwards. The fourth drive unit 3222 then raises the first basket 322 to a specified height h, so that the second set of support members arrives at the position of the first set of support members, and continues to wait for the arrival of the second solar cell.
[0120] Repeat the rising action of the first basket 322 (the first basket 322 rises to a specified height h each time) until the i-th battery cell is inserted into the i-th support member, which means that the first basket 322 is full of battery cells.
[0121] By setting several sets of corresponding first support members 32211 and second support members 32212 along the height direction in the hopper 3221, the hopper 3221 straddles the conveyor track 321 and is driven upward by the fourth drive member 3222, so that the hopper 3221 can carry several battery cells from top to bottom, realizing automatic storage of battery cells and improving operational efficiency; and, due to the design of the first support members 32211 and second support members 32212, there are gaps between adjacent battery cells in the hopper 3221, so there is no need to lay isolation paper between the battery cells, thus avoiding damage to the blue film surface.
[0122] Optionally, the structure of the second basket 323 may be the same as or different from that of the first basket 322;
[0123] When the structure of the second material basket 323 is the same as that of the first material basket 322, the second material basket 323 is configured to sequentially carry the qualified second solar cells in each abnormal solar cell group from top to bottom.
[0124] Optionally, when the first basket 322 is full of first battery cells, or the second basket 323 is full of second battery cells, the loading end of the conveying mechanism 1 can idle for one cycle, creating an empty space on the conveying mechanism 1. The first basket 322 and the second basket 323 then descend and release one first battery cell and one second battery cell onto the conveying track 321, respectively. The conveying track 321 rotates in the opposite direction, transporting the first and second battery cells to the loading position. When the empty space on the conveying mechanism 1 moves directly below the rejection mechanism 4, the rejection mechanism 4 sequentially picks up the first and second battery cells from the loading position and moves them to the empty space on the conveying mechanism 1. This allows for the automated use of qualified first battery cells in the first basket 322 and qualified second battery cells in the second basket 323, eliminating the need for manual removal of the battery cells from the first basket 322 and the second basket 323, thus improving the ease of operation and automation level of the equipment.
[0125] Optionally, when the detection mechanism 2 detects an abnormal battery cell group on the conveying mechanism 1 where neither the first nor the second battery cell meets the standards, the first basket 322 and the second basket 323 descend and release one first battery cell and one second battery cell onto the conveying track 321, respectively. The conveying track 321 then rotates in the opposite direction, conveying the first and second battery cells to the loading position. During this process, the rejection mechanism 4 sends the substandard first and second battery cells from the abnormal battery cell group to the first storage component 31. Subsequently, the rejection mechanism 4 retrieves the compliant first and second battery cells from the loading position and sends them to the conveying mechanism 1 to replace the aforementioned abnormal battery cell group. This achieves both the replenishment function of the conveying mechanism 1 and avoids excessive material accumulation in the first basket 322 and the second basket 323, which would require manual removal.
[0126] Optional, please continue reading Figure 1 The conveying mechanism 1 is equipped with a testing station;
[0127] The testing mechanism 2 includes a light source 21 and a testing component 22. The light source 21 is located below the testing station of the conveying mechanism 1. The light source 21 is configured to illuminate the battery cells located at the testing station. The testing component 22 is configured to detect whether the battery cells illuminated by the light source 21 meet the standards.
[0128] The cooperation between the light source 21 and the detection component 22 enables the detection of the battery cells during the transportation process, reducing detection time and improving production efficiency. With the illumination of the light source 21, the detection component 22 can more accurately determine whether the battery cells meet the standards, reducing detection errors.
[0129] Optional, please continue reading Figure 1 The detection component 22 includes a camera 221 and a PL detector 222, wherein:
[0130] Camera 221 is used to acquire surface images of the battery cells;
[0131] The PL detector 222 is used to excite electrons in the solar cell and detect the photoluminescence signal of the solar cell.
[0132] The combination of camera 221 and PL detector 222 enables comprehensive inspection of the surface and interior of the solar cell, improving the accuracy of the inspection; through dual detection of surface images and photoluminescence signals, the possibility of missed detection is reduced, ensuring the quality of the solar cell.
[0133] PL detection is a photoluminescence detection method, and its principle is as follows:
[0134] By using light of a specific wavelength as an excitation source to irradiate the solar cell, electrons in the solar cell absorb photon energy and transition from the ground state to the excited state.
[0135] When these excited electrons return to the ground state, they release energy in the form of light, that is, they emit fluorescence of a specific wavelength.
[0136] By collecting these fluorescence signals through filtering and special photosensitive elements, and then processing the data, information such as defects on the surface of the solar cell can be obtained.
[0137] For example, narrowband filters and photodetectors can be used to collect fluorescence signals in specific wavelength bands. Subsequently, the fluorescence signals can be quantitatively analyzed using instruments such as a spectrometer or charge-coupled device, and combined with image processing algorithms, the PL intensity distribution map of the solar cell can be reconstructed.
[0138] In the inspection of solar cells, photoluminescence (PL) detection can effectively identify microscopic defects in the material, such as grain boundary defects, dislocations, impurities, and surface recombination centers. By analyzing the relationship between PL intensity and carrier recombination rate, the minority carrier lifetime and photoelectric conversion efficiency of the material can be further evaluated. Furthermore, PL detection can be combined with electroluminescence detection technology to achieve comprehensive characterization of the cell performance.
[0139] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, and not by the above descriptions in the embodiments.
Claims
1. A battery cell conveying and screening device, characterized in that, The solar cell conveying and screening device includes a conveying mechanism, a detection mechanism, a storage mechanism, and a rejection mechanism, wherein: The conveying mechanism is configured to step-convey at least one set of battery cell groups along a first direction, each set of battery cell groups comprising a pair of battery cells, the two battery cells being a first battery cell and a second battery cell arranged in sequence. The detection mechanism is configured to determine whether the first and second battery cells in each battery cell group on the conveying mechanism meet the standards, and a battery cell group in which the first and / or second battery cells are found to be substandard is an abnormal battery cell group. The storage mechanism includes a first storage component and a second storage component located on both sides of the conveying mechanism. The first storage component is used to store the first and second non-compliant battery cells in each of the abnormal battery cell groups, and the second storage component is used to store the first and second compliant battery cells in each of the abnormal battery cell groups. The rejection mechanism includes a mounting frame and a first drive assembly and a pickup assembly mounted on the mounting frame. The pickup assembly is configured to simultaneously pick up a first battery cell and a second battery cell from an abnormal battery cell group on the conveying mechanism. The first drive component is configured to drive the pickup component to move between the first storage component, the conveying mechanism, and the second storage component, so that the pickup component delivers substandard battery cells into the first storage component and delivers compliant battery cells from each of the abnormal battery cell groups into the second storage component.
2. The battery cell conveying and screening apparatus according to claim 1, wherein, The distance from the first storage component to the conveying mechanism is the same as the distance from the second storage component to the conveying mechanism. The picking component includes a first picker and a second picker, which are respectively used to pick up the first and second battery cells in the abnormal battery cell group. The mounting bracket is provided with a first guide rail and a second guide rail that are parallel to each other along the second direction. The first pickup is slidably mounted on the first guide rail, and the second pickup is slidably mounted on the second guide rail. The second direction is perpendicular to the first direction on the horizontal plane. The first drive assembly includes a timing belt and a first drive member. The timing belt is horizontally mounted on the mounting bracket. The first drive member is drivenly connected to the timing belt. The first pickup and the second pickup are respectively fixedly connected to the two sides of the timing belt. The first drive member is configured to drive the timing belt to rotate so that the first pickup and the second pickup move in opposite directions.
3. The battery cell conveying and screening device according to claim 2, characterized in that, The first pickup includes a first support frame and a second driving member and a first adsorption member disposed on the first support frame. The first support frame is slidably mounted on the first guide rail. The second driving member is configured to drive the first adsorption member to rise and fall. The first adsorption member is configured to adsorb or release the first battery cell. The second pickup includes a second support frame and a third driving member and a second adsorption member disposed on the second support frame. The second support frame is slidably mounted on the second guide rail. The third driving member is configured to drive the second adsorption member to move up and down. The second adsorption member is configured to adsorb or release the second battery cell.
4. The cell conveying and screening apparatus according to claim 3, wherein The first adsorption element is provided with at least one first adsorption structure, and the second adsorption element is provided with at least one second adsorption structure; the first adsorption structure and the second adsorption structure are suction cups or adsorption holes.
5. The battery cell conveying and screening device according to claim 2, characterized in that, The first pickup is equipped with a first sensor, which is configured to detect whether the first pickup has picked up a first battery cell. The second pickup is equipped with a second sensor, which is configured to detect whether the second pickup has picked up a second battery cell.
6. The cell conveying and screening apparatus of claim 1, wherein, The material rejection mechanism also includes a suspension, which is fixedly installed; the mounting bracket is slidably installed along the first direction or detachably installed at the lower end of the suspension.
7. The cell conveying and screening apparatus of claim 2, wherein, The first storage component includes a first material box and a second material box arranged side by side. The first picker is configured to move the first non-compliant cell in the abnormal cell group to the first cassette and release it in the first cassette; The second picker is configured to move the second non-compliant cell from the abnormal cell group to the second cassette and release it into the second cassette.
8. The cell conveying and screening apparatus according to any one of claims 1 to 7, characterized in that, The second storage component includes a conveying track, a first material basket, and a second material basket. The conveying track is sequentially provided with a loading position, a first storage position, and a second storage position. The first material basket is located at the first storage position, and the second material basket is located at the second storage position. The picking component is configured to move and release the first compliant battery cell in the abnormal battery cell group to the loading position, and the conveying track is configured to convey the first battery cell at the loading position to the first material basket at the first storage position. The picking component is configured to move and release the qualified second cell from the abnormal cell group to the loading position, and the conveying track is configured to convey the second cell at the loading position to the second basket at the second storage position.
9. The solar cell conveying and screening device according to claim 8, characterized in that, The first basket includes a hopper and a fourth drive unit, wherein: The hopper includes a base, a first hopper plate, and a second hopper plate. The first hopper plate and the second hopper plate are installed on opposite sides of the base. The inner sidewall of the first hopper plate is provided with a plurality of first support members arranged parallel from top to bottom and spaced apart. The inner sidewall of the second hopper plate is provided with second support members that correspond one-to-one with each of the first support members. Each first support member and the corresponding second support member are arranged opposite each other in the same horizontal plane to jointly support a battery cell. The hopper straddles the conveying track, and the two ends of the battery cell in the length direction protrude from the conveying track in the width direction. The distance between each first support member and the corresponding second support member is greater than the width of the conveying track and less than the length of the battery cell. The fourth drive unit is configured to drive the hopper to rise step by step, so that the first qualified battery cell in each abnormal battery cell group is carried from top to bottom by the first and second supports of each group. The structure of the second material basket is the same as that of the first material basket. The second material basket is used to carry the qualified second battery cells in each abnormal battery cell group from top to bottom.
10. The cell conveying and screening apparatus according to any one of claims 1 to 7, wherein, The conveying mechanism is equipped with a testing station; The testing mechanism includes a light source and a testing component. The light source is located below the testing station of the conveying mechanism. The light source is configured to illuminate the battery cells located at the testing station. The testing component is configured to detect whether the battery cells illuminated by the light source meet the standards.
11. The cell conveying and screening apparatus of claim 10, wherein, The detection component includes a camera and a PL detector, wherein: The camera is used to acquire surface images of the battery cells; The PL detector is used to excite electrons within the solar cell and detect the photoluminescence signal of the solar cell.