A busbar-free battery string EL detection device
By providing a pressurized plate on the second robot of the main gate-free battery string EL detection device, and applying pressure to improve the contact between the welding tape and the battery gate line, the problem of shadowing in the detection results is solved, and the detection accuracy and image clarity are significantly improved.
Patent Information
- Application Number
- CN202420573190.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-22
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-03-22
AI Technical Summary
During the EL detection process of the main gate-free battery string, the contact between the welding tape and the battery secondary gate is insufficient, resulting in large-scale shadows in the detection results, and the defective products cannot be fully identified.
A main gateless battery string EL detection device is designed, by providing a pressurized plate on the second robot, and applying pressure to the battery string during testing, so that the welding tape and the battery grid line are fully in contact.
The pressure applied by the pressurized plate improves the contact status between the welding tape and the battery gate line, and significantly improves the clarity and detection accuracy of the EL image.
Smart Images
Figure CN222720345U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar cells, in particular to an EL detection device for a main grid-free battery string. Background Art
[0002] In the field of solar cell technology, busbar-less technology is conducive to thinning in the silicon wafer stage and can reduce silver consumption in the cell stage.
[0003] In the component stage, if the diameter of the welding strip is reduced, the shading area can be reduced and the light absorption capacity can be increased. The busbar-free technology increases the number of welding strips, and the path of carrier transmission to the fine grid is greatly shortened, which has great potential for efficiency improvement. At the same time, the busbar-free technology does not require high-temperature welding in the string welding stage, which can improve the product quality rate. The busbar-free technology has received widespread attention due to its huge potential for cost reduction and efficiency improvement.
[0004] In some busbar-free technologies, when performing EL testing on a battery string, the soldering ribbon and the battery sub-grid fail to form sufficient contact, so the test results may have large shadows and cannot fully identify defective products. Summary of the invention
[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies in the prior art, the utility model provides an EL detection device for a battery string without a main grid, so as to fully improve the contact between the welding strip and the battery grid line and improve the EL image.
[0006] The technical solution adopted by the utility model to solve its technical problems is: a main-grid-free battery string EL detection device, comprising a first conveyor belt, a second conveyor belt and a detection platform arranged in parallel with each other, a first manipulator capable of lifting and lowering movement is arranged above the first conveyor belt, and a second manipulator capable of lifting and lowering movement is arranged above the first conveyor belt, the second conveyor belt and the detection platform, the first manipulator sucks the battery string conveyed by the first conveyor belt and then turns upward 180°, the second manipulator sucks the battery string on the first manipulator and then moves it to the detection platform, and after the detection is completed, the battery string is sucked and moved to the second conveyor belt for transmission to the next process; conductive modules are arranged at both ends of the detection platform, and a camera is arranged in the detection platform; the second manipulator has an arm beam, and a pressure plate that moves downward to apply pressure to the battery string is arranged on the bottom surface of the arm beam, and a suction cup that can extend to absorb the battery string is arranged in the pressure plate, and an electrode pressure plate fixed to the bottom surface of the arm beam is respectively arranged at both ends of the arranged pressure plates, and the electrode pressure plate corresponds to the conductive module.
[0007] Specifically, the conductive module and the electrode pressing plate on the second manipulator are positioned vertically opposite to each other to clamp the lead-out welding strip of the battery string to form a conductive path.
[0008] Furthermore, a transparent plate for placing battery strings is installed on the upper surface of the detection platform.
[0009] Specifically, the first manipulator has a first crossbeam, and a suction cup plate for sucking the battery string is arranged and installed on the bottom surface of the first crossbeam.
[0010] Furthermore, support plates are fixed at both ends of the frame of the first conveyor belt, and both ends of the first crossbeam are respectively rotatably coordinated with the upper ends of the support plates to realize a 180° flip of the first manipulator.
[0011] Furthermore, a slide rail spanning the first conveyor belt, the second conveyor belt and the detection platform is installed above the second manipulator, and the arm beam can move along the slide rail through motor control.
[0012] Furthermore, a support rod is fixed to the bottom surface of the arm beam, a first cylinder for pushing the pressure plate to move is installed at the center of the bottom surface of the support rod, and second cylinders for pushing the suction cup to extend and retract are installed on both sides of the bottom surface of the support rod.
[0013] Furthermore, a through hole corresponding to the position of the suction cup is formed on the pressure plate, and the suction cup extends through the through hole to the bottom surface of the pressure plate to absorb the battery string.
[0014] The beneficial effect of the utility model is as follows: the utility model arranges a pressure plate on the second manipulator, and during testing, the pressure plate applies a certain pressure to the battery string, so that the welding strip can fully contact with the battery grid line. In this way, the EL test of the battery string is performed under the pressurized state, which can fully improve the contact condition between the welding strip and the battery grid line, effectively improve the clarity of the EL image, and improve the detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.
[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.
[0017] Figure 2 It is a schematic diagram of the exploded structure of the utility model.
[0018] Figure 3 It is a schematic diagram of the structure of the second manipulator in the utility model when viewed from above.
[0019] Figure 4 It is a schematic diagram of the main structure of the second manipulator of the utility model.
[0020] Figure 5 It is a schematic diagram of the structure of the pressure plate of the utility model when viewed from above.
[0021] Figure 6 It is a schematic diagram of the main structure of the pressure plate of the utility model.
[0022] In the figure: 1. first conveyor belt, 2. second conveyor belt, 3. detection platform, 4. first manipulator, 4-1. first beam, 4-2. suction cup plate, 5. second manipulator, 5-1. arm beam, 5-2. pressure plate, 5-3. suction cup, 5-4. electrode pressure plate, 5-5. support rod, 6. conductive module, 7. camera, 8. transparent flat plate, 9. support plate, 10. slide rail, 11. first cylinder, 12. second cylinder. DETAILED DESCRIPTION
[0023] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0024] like Figure 1 , Figure 2 The EL detection device for a busbar-free battery string shown in the figure comprises a first conveyor belt 1, a second conveyor belt 2, a detection platform 3, a first manipulator 4 and a second manipulator 5. The first conveyor belt 1, the second conveyor belt 2 and the detection platform 3 are arranged parallel to each other from right to left, and the first manipulator 4 and the second manipulator 5 can both perform lifting movements.
[0025] Conductive modules 6 are respectively provided at both ends of the detection platform 3. A transparent plate 8 for placing battery strings is installed on the upper end surface of the detection platform 3 between the conductive modules 6. Two cameras 7 for photographing the battery strings are installed in the detection platform 3 below the transparent plate 8 at a distance.
[0026] The first manipulator 4 is located above the first conveyor belt 1. The first manipulator 4 includes a first beam 4-1. The bottom surface of the first beam 4-1 is arranged with a suction cup plate 4-2 for sucking the battery string. Support plates 9 are fixed at both ends of the frame of the first conveyor belt 1. The two ends of the first beam 4-1 are respectively rotated with the upper end of the support plate 9 to realize a 180° flip of the first manipulator 4.
[0027] The second manipulator 5 can be lifted and lowered, and a slide rail 10 is provided across the first conveyor belt 1 , the second conveyor belt 2 and the detection platform 3 .
[0028] The second manipulator 5 has an arm crossbeam 5 - 1 , and the arm crossbeam 5 - 1 can move along the slide rail 10 through motor control.
[0029] like Figure 3 , Figure 4As shown, a pressure plate 5-2 is arranged and installed on the bottom surface of the arm beam 5-1 and moves downward to apply pressure to the battery string. A suction cup 5-3 that can be extended to absorb the battery string is provided in the pressure plate 5-2. Electrode pressure plates 5-4 fixed to the bottom surface of the arm beam 5-1 and corresponding to the conductive module 6 are provided at both ends of the arranged pressure plate 5-2. The electrode pressure plate 5-4 and the conductive module 6 are positioned opposite to each other in upper and lower directions to clamp the lead-out welding strip of the battery string to form a conductive path.
[0030] like Figure 5 , Figure 6 As shown, a support rod 5-5 is fixed to the bottom surface of the arm beam 5-1, a first cylinder 11 for pushing the pressure plate 5-2 to move is installed at the center of the bottom surface of the support rod 5-5, and second cylinders 12 for pushing the suction cup 5-3 to extend and retract are installed on both sides of the bottom surface of the support rod 5-5.
[0031] The pressure plate 5-2 is provided with a through hole corresponding to the position of the suction cup 5-3, and the suction cup 5-3 extends through the through hole to extend from the bottom surface of the pressure plate 5-2 to absorb the battery string.
[0032] The specific EL test steps are as follows:
[0033] S1, the soldered battery string is conveyed to the first conveyor belt 1;
[0034] S2, the first manipulator 4 descends to absorb the battery string conveyed by the first conveyor belt 1 and then rises and turns upward by 180°, so that the battery string is located above the first manipulator 4.
[0035] S3, the second manipulator 5 descends, the second cylinder 12 pushes the suction cup 5-3 out of the pressure plate 5-2, sucks the battery string above the first manipulator 4, and moves along the slide rail 10 to the top of the detection platform 3, and places the battery string on the transparent plate 8, the suction cup 5-3 shrinks back into the through hole of the pressure plate 5-2, and the first cylinder 11 pushes the pressure plate 5-2 downward, so that the electrode pressure plate 5-4 and the conductive module 6 are tightly fitted in the vertical direction to clamp the battery string lead wire, and the battery string is energized through the electrode pressure plate 5-4, and unbalanced carriers are injected into the battery cell, and the camera 7 takes pictures, and then the first cylinder 11 pushes the pressure plate 5-2 to rise and reset, and the suction cup 5-3 extends out of the pressure plate 5-2, sucks the battery string and transports it to the second conveyor belt 2;
[0036] S4, the tested battery string is conveyed to the next process by the second conveyor belt 2.
[0037] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A busbar-free battery string EL detection device, comprising a first conveyor belt (1), a second conveyor belt (2) and a detection platform (3) arranged in parallel with each other, characterized in that: A first manipulator (4) capable of lifting and lowering is provided above the first conveyor belt (1), and a second manipulator (5) capable of lifting and lowering is provided above the first conveyor belt (1), the second conveyor belt (2) and the detection platform (3). The first manipulator (4) absorbs the battery string conveyed by the first conveyor belt (1) and then turns upward 180°. The second manipulator (5) absorbs the battery string on the first manipulator (4) and then moves and places it on the detection platform (3). After the detection is completed, the battery string is absorbed and moved to the second conveyor belt (2) for transmission to the next process. Conductive modules (6) are provided at both ends of the detection platform (3), and a camera (7) is provided inside the detection platform (3); The second manipulator (5) comprises an arm crossbeam (5-1), the bottom surface of the arm crossbeam (5-1) is arranged with a pressure plate (5-2) which moves downward to apply pressure to the battery string, the pressure plate (5-2) is provided with a suction cup (5-3) which can be extended to absorb the battery string, and the two ends of the arranged pressure plates (5-2) are respectively provided with electrode pressure plates (5-4) fixed to the bottom surface of the arm crossbeam (5-1), and the electrode pressure plate (5-4) corresponds to the conductive module (6).
2. The busbar-free battery string EL detection device according to claim 1, characterized in that: The conductive module (6) and the electrode pressing plate (5-4) on the second manipulator (5) are positioned vertically opposite to each other to clamp the lead-out welding strip of the battery string to form a conductive path.
3. The busbar-free battery string EL detection device according to claim 1, characterized in that: The upper end surface of the detection platform (3) is provided with a transparent flat plate (8) for placing the battery string.
4. The busbar-free battery string EL detection device according to claim 1, characterized in that: The first manipulator (4) comprises a first crossbeam (4-1), and a suction cup plate (4-2) for sucking the battery string is arranged and installed on the bottom surface of the first crossbeam (4-1).
5. The busbar-free battery string EL detection device according to claim 4, characterized in that: Support plates (9) are fixed at both ends of the frame of the first conveyor belt (1), and both ends of the first crossbeam (4-1) are respectively rotatably matched with the upper end of the support plate (9) to realize 180° flipping of the first manipulator (4).
6. The busbar-free battery string EL detection device according to claim 1, characterized in that: A slide rail (10) is installed above the second manipulator (5) and spans the first conveyor belt (1), the second conveyor belt (2) and the detection platform (3). The arm beam (5-1) can move along the slide rail (10) through motor control.
7. The busbar-free battery string EL detection device according to claim 6, characterized in that: A support rod (5-5) is fixed to the bottom surface of the arm crossbeam (5-1), a first cylinder (11) for pushing the pressure plate (5-2) to move is installed at the center of the bottom surface of the support rod (5-5), and second cylinders (12) for pushing the suction cup (5-3) to extend and retract are installed on both sides of the bottom surface of the support rod (5-5).
8. The busbar-free battery string EL detection device according to claim 7, characterized in that: The pressure plate (5-2) is provided with a through hole corresponding to the position of the suction cup (5-3), and the suction cup (5-3) extends out of the bottom surface of the pressure plate (5-2) through the through hole to absorb the battery string.