Surface treatment device for TOPCon battery processing

Abstract

The invention relates to the technical field of battery processing, in particular to a TOPCon battery processing surface treatment device which comprises a shell cover hinged to the top of a passivation device shell, a clamping mechanism used for fixing battery panels of different specifications is arranged in the passivation device shell, and a moving mechanism used for pushing out the battery panels is further arranged on the passivation device shell. The clamping mechanism comprises a traction plate arranged on the passivation device shell, a supporting frame fixed to the bottom of the traction plate and hand wheels arranged at the two ends of the supporting frame correspondingly, and a threaded rod is fixedly arranged on one side of each hand wheel. The stability of the TOPCon battery panel in the passivation mechanism can be improved, the phenomenon that the TOPCon battery shakes randomly in the passivation process is avoided, the quality of the material surface can be effectively kept, the influence of the external environment on the battery performance is reduced, the long-term stability and durability of the TOPCon battery are enhanced, meanwhile, the thickness and uniformity of a passivation layer can be accurately controlled, and the service life of the TOPCon battery panel is prolonged. Therefore, the production efficiency and the yield are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, in particular to a surface treatment device for TOPCon battery processing. Background Art

[0002] TOPCon cells use N-type silicon as a substrate and achieve passivation contact through tunneling oxide, thereby improving the performance of solar cells. As a new passivation technology, TOPCon has become a research hotspot. This technology generates an ultra-thin tunneling oxide layer and a highly doped polysilicon layer on the surface of the cell. The passivation effect of the oxide layer and the field passivation effect of the highly doped polysilicon layer can greatly reduce the minority carrier recombination rate. At the same time, the highly doped polysilicon layer has good conductivity for majority carriers.

[0003] During the processing of TOPCon batteries, surface passivation equipment is often used to passivate the surface of the TOPCon batteries to improve the subsequent use of the batteries. Currently, the TOPCon batteries are generally placed in a special placement box, and then the upper end of the passivation tank is sealed. Then, a hydrogen plasma generator is connected to the inlet pipe, and the generated hydrogen plasma is passed into the interior of the passivation tank. In this way, the hydrogen ions in the plasma will be attracted and quickly injected into the surface of the TOPCon battery, which can passivate the silicon crystal defects in the battery cell in a short time. However, the existing passivation device lacks a clamping and fixing component, which causes the TOPCon battery to shake randomly during the subsequent passivation process, which deteriorates the passivation effect. In addition, the operation of the TOPCon battery requires reaching into the passivation device to operate, which is cumbersome and less practical. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a surface treatment device for TOPCon battery processing, which solves the problem in the prior art that the TOPCon battery shakes randomly during the passivation process, thereby affecting the passivation effect.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] TOPCon battery processing surface treatment device, including a shell cover hingedly arranged on the top of the passivation device shell, the interior of the passivation device shell is provided with a clamping mechanism for fixing battery panels of different specifications, and the passivation device shell is also provided with a moving mechanism for pushing out the battery panels, the clamping mechanism includes a traction plate arranged on the passivation device shell, a support frame fixed to the bottom of the traction plate, and handwheels respectively arranged at both ends of the support frame, a threaded rod is fixedly provided on one side of the handwheel, one end of the threaded rod passes through the support frame and is threadedly connected to the support frame, and clamping frames are provided at both ends of the inner side of the support frame, the two clamping frames are used to clamp the battery panels, and the end of the threaded rod away from the handwheel is rotatably connected to the clamping frame through a bearing, and sliders are fixedly connected to the outer walls of both sides of the two clamping frames, and slide grooves are respectively provided at the four inner corners of the support frame.

[0007] As a further optimization solution of the present invention, the four sliders slide in the corresponding inner sides of the sliding grooves respectively, and the sliders are slidably sleeved with support rods located in the inner sides of the sliding grooves and fixed to the support frame.

[0008] As a further optimization solution of the present invention, a communicating fault-tolerant groove is provided on the top of the passivation device housing, and the traction plate passes through the fault-tolerant groove and extends outside the passivation device housing.

[0009] As a further optimization scheme of the present invention, the moving mechanism includes vertical plates fixedly arranged on the outer walls on both sides of the passivation device shell, and rotating grooves respectively opened on the vertical plates. The bottom of the passivation device shell is fixedly connected to a dual-axis motor, and the output shafts at both ends of the dual-axis motor are fixedly connected to shaft rods.

[0010] As a further optimization solution of the present invention, one end of the shaft is fixedly connected to a driving gear, one side of the driving gear is provided with a meshing driven gear, and the driven gear is fixedly connected to a screw rod.

[0011] As a further optimization scheme of the present invention, the top end of the screw rod passes through the bottom of the vertical plate and extends into the rotating groove. The two ends of the bottom of the traction plate are fixedly connected with connecting sleeves, which are inserted into the rotating groove and threaded onto the screw rod.

[0012] As a further optimization solution of the present invention, through openings are respectively provided at both ends of the bottom of the vertical plate, and ball bearings fixed to the vertical plate are provided on the inner side of the through openings, and the screw rod is fixedly inserted in the ball bearings.

[0013] As a further optimization solution of the present invention, four supporting feet arranged in a rectangular shape are fixedly connected to the bottom of the passivation device housing, and a connecting pipe is fixedly inserted into one side of the passivation device housing.

[0014] By means of the above technical solution, the present invention provides a surface treatment device for TOPCon battery processing, which has at least the following beneficial effects compared to the prior art:

[0015] 1. The present invention fixes the TOPCon battery panel on the inner side of the passivation device housing by providing a clamping assembly, which can improve the stability of the TOPCon battery panel in the passivation mechanism and avoid the phenomenon of TOPCon battery shaking during the passivation process. It can effectively maintain the quality of the material surface, reduce the impact of the external environment on battery performance, enhance the long-term stability and durability of the TOPCon battery, and at the same time can accurately control the thickness and uniformity of the passivation layer, reduce processing errors, and thus improve production efficiency and output.

[0016] 2. The present invention provides a moving mechanism to allow the clamping assembly and TOPCon solar panel to be removed from the passivation device, which facilitates manual operation and eliminates the need for manual pushing into the passivation device. Parameters such as gas flow, temperature, and pressure during the passivation process can be more accurately controlled. Through such fine regulation, the passivation effect can be further optimized, and defects and unevenness on the material surface can be reduced, thereby improving the efficiency and stability of the battery. At the same time, the processing process can be completed efficiently and quickly enter the next stage, reducing pauses and switching time and improving production efficiency.

[0017] 3. The present invention performs passivation operations by stably moving the TOPCon solar panel, which can effectively avoid the influence of external pollutants or physical damage on the passivation layer. During the treatment process, the surface treatment process is ensured to be clean and interference-free, thereby ensuring the consistency and high quality of the passivation layer. At the same time, it can also ensure that each battery has the same effect after passivation treatment, reducing the quality fluctuation caused by equipment instability, helping to improve the consistency and reliability of the final product and meet high quality requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0021] Figure 3 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0022] Figure 4 for Figure 3 An enlarged schematic diagram of the structure of part B.

[0023] In the figure: 1. Passivation device housing; 2. Housing cover;

[0024] 3. Clamping mechanism; 31. Pulling plate; 32. Support frame; 33. Handwheel; 34. Threaded rod; 35. Clamping frame; 36. Slider; 37. Slide; 38. Support rod;

[0025] 4. Moving mechanism; 41. Vertical plate; 42. Rotating groove; 43. Dual-axis motor; 44. Shaft; 45. Driving gear; 46. Driven gear; 47. Screw; 48. Connecting sleeve; 49. Ball bearing;

[0026] 5. Support legs; 6. Connecting pipe. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] First embodiment

[0029] Since the TOPCon battery processing surface treatment device is currently used to passivate the battery panel, the TOPCon battery panel is prone to shaking, which leads to poor passivation effect and reduced quality of the TOPCon battery panel. In order to improve the stability of the TOPCon battery panel in the passivation mechanism and avoid the TOPCon battery panel shaking during the passivation process, refer to Figure 1 - Figure 4 This embodiment provides a surface treatment device for TOPCon battery processing, including a shell cover 2 hingedly arranged on the top of a passivation device shell 1. Four supporting legs 5 arranged in a rectangular shape are fixedly connected to the bottom of the passivation device shell 1 for supporting the entire passivation device shell 1 and the surface treatment device. A connecting pipe 6 is fixedly inserted on one side of the passivation device shell 1, and a passivation liquid can be added to the passivation device shell 1 through the connecting pipe 6.

[0030] A clamping mechanism 3 for fixing battery panels of different specifications is provided inside the passivation device housing 1. The clamping mechanism 3 includes a traction plate 31 provided on the passivation device housing 1, a support frame 32 fixed to the bottom of the traction plate 31, and hand wheels 33 provided at both ends of the support frame 32. A threaded rod 34 is fixed on one side of the hand wheel 33. One end of the threaded rod 34 passes through the support frame 32 and is threadedly connected thereto. Clamping frames 35 are provided at both ends of the inner side of the support frame 32. The two clamping frames 35 are used to clamp the battery panels. The threaded rod 34 is away from the battery panel. One end of the handwheel 33 is rotatably connected to the clamping frame 35 through a bearing. Sliders 36 are fixedly connected to the outer walls of both sides of the two clamping frames 35. Slide grooves 37 are respectively provided at the four inner corners of the support frame 32, and the four slides 36 slide inside the corresponding slide grooves 37 respectively. A support rod 38 located inside the slide groove 37 and fixed to the support frame 32 is slidably sleeved on the slide 36, so that the movement of the clamping frame 35 is more stable. A connected fault-tolerant groove is provided on the top of the passivation device housing 1, and the traction plate 31 passes through the fault-tolerant groove and extends outside the passivation device housing 1.

[0031] By rotating the two hand wheels 33 respectively, the two hand wheels 33 respectively drive the threaded rod 34 on one side thereof to rotate on the support frame 32. At this time, the clamping frame 35 installed on one end of the threaded rod 34 will move under the push of the threaded rod 34. The two clamping frames 35 are brought close to each other to clamp and fix the topcon solar panel. Not only can the topcon solar panel be clamped stably, but also solar panels of different sizes can be clamped, thereby expanding the scope of application of the surface treatment device.

[0032] Second embodiment

[0033] In order to precisely control the treatment process of the battery surface, further optimize the passivation effect, and reduce the defects and unevenness of the material surface, refer to Figure 1 and Figure 2In this embodiment, a moving mechanism 4 for pushing out the battery panel is further provided on the passivation device housing 1. Specifically, the moving mechanism 4 includes vertical plates 41 fixedly provided on the outer walls of both sides of the passivation device housing 1, and rotation slots 42 respectively provided on the vertical plates 41. A dual-axis motor 43 is fixedly connected to the bottom of the passivation device housing 1. A shaft 44 is fixedly connected to the output shafts at both ends of the dual-axis motor 43. One end of the shaft 44 is fixedly connected to a driving gear 45. A driven gear 46 is provided on one side of the driving gear 45 to engage with the driven gear 46. A screw rod 47 is fixedly connected, the top of which passes through the bottom of the vertical plate 41 and extends into the rotating groove 42. The two ends of the bottom of the traction plate 31 are fixedly connected with connecting sleeves 48, which are inserted into the rotating groove 42 and threaded onto the screw rod 47. When the screw rod 47 rotates, it pushes the connecting sleeve 48 to move in the rotating groove 42. A through-hole is provided at the two ends of the bottom of the vertical plate 41, and a ball bearing 49 fixed to the vertical plate 41 is provided on the inner side of the through-hole. The screw rod 47 is fixedly inserted in the ball bearing 49 to ensure that the rotation of the screw rod 47 is more stable.

[0034] By starting the dual-axis motor 43, the shafts 44 on both ends can be rotated. At this time, the shafts 44 will drive the driving gear 45 and the driven gear 46 to rotate simultaneously, thereby realizing the rotation of the screw rod 47. When the screw rod 47 rotates, the connecting sleeve 48 threadedly connected to the screw rod 47 moves upward in the rotating groove 42, thereby driving the traction plate 31 to move upward. The traction plate 31 will then cause the support frame 32 to extend out of the passivation device housing 1, which can more accurately control the treatment process of the battery surface, avoid being in a high temperature and chemical treatment environment for a long time, thereby better protecting the battery surface, avoiding excessive reaction of the surface layer, and maintaining the uniformity and stability of the passivation effect.

[0035] The present invention fixes the TOPCon solar panel on the inner side of the passivation device housing 1 through a clamping assembly, and can also remove the clamping assembly and the TOPCon solar panel from the passivation device through a moving mechanism 4, which can improve the stability of the TOPCon solar panel in the passivation mechanism, avoid the phenomenon of TOPCon batteries shaking randomly during the passivation process, effectively maintain the quality of the material surface, and more accurately control parameters such as gas flow, temperature and pressure during the passivation process. Through such fine regulation, the passivation effect can be further optimized and defects and unevenness on the material surface can be reduced.

[0036] During the actual use of the surface treatment device, the solar panel to be treated is first placed between the two clamping frames 35, and then the two hand wheels 33 are rotated respectively. The two hand wheels 33 respectively drive the threaded rods 34 on one side to rotate on the support frame 32. The two threaded rods 34 respectively push the clamping frames 35 at one end to move toward the middle. The clamping frames 35 drive the sliders 36 at both ends to move. The sliders 36 slide inside the slide grooves 37. The two clamping frames 35 are brought close to each other to clamp and fix the topcon solar panel. When the solar panel needs to be pushed out of the passivation device housing 1, the dual-axis motor 43 is started, and the dual-axis motor 43 simultaneously drives the shafts 44 on both ends thereof to rotate. The shaft 44 drives the driving gear 45 at one end thereof to rotate, and the driving gear 45 drives the driven gear 46 meshing with it to rotate. The driven gear 46 drives the screw rod 47 on one side thereof to rotate. When the screw rod 47 rotates, the connecting sleeve 48 moves upward in the rotating groove 42. The connecting sleeve 48 pushes the traction plate 31 to move upward. The traction plate 31 will then cause the support frame 32 to move upward, and the support frame 32 drives the solar panel to extend upward out of the passivation device housing 1.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0038] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. TOPCon battery processing surface treatment device, characterized by: The passivation device comprises a cover (2) hingedly arranged on the top of a passivation device housing (1); a clamping mechanism (3) for fixing battery panels of different specifications is provided inside the passivation device housing (1); and a moving mechanism (4) for pushing out the battery panels is also provided on the passivation device housing (1); The clamping mechanism (3) comprises a traction plate (31) arranged on the passivation device housing (1), a support frame (32) fixed on the bottom of the traction plate (31), and hand wheels (33) respectively arranged at both ends of the support frame (32). A threaded rod (34) is fixedly arranged on one side of the hand wheel (33). One end of the threaded rod (34) passes through the support frame (32) and is threadedly connected thereto. Clamping frames (35) are arranged at both ends of the inner side of the support frame (32). The two clamping frames (35) are used to clamp the battery panel. The end of the threaded rod (34) away from the hand wheel (33) is rotatably connected to the clamping frame (35) through a bearing. Sliders (36) are fixedly connected to the outer walls of both sides of the two clamping frames (35). Slide grooves (37) are respectively provided at the four inner corners of the support frame (32).

2. The surface treatment device for TOPCon battery processing according to claim 1, characterized in that: The four sliders (36) slide in the inner sides of the corresponding slide grooves (37) respectively. The sliders (36) are slidably sleeved with support rods (38) located in the inner sides of the slide grooves (37) and fixed to the support frame (32). 。 3. The surface treatment device for TOPCon battery processing according to claim 1, characterized in that: A communicating fault-tolerant groove is provided on the top of the passivation device housing (1), and the traction plate (31) passes through the fault-tolerant groove and extends out of the passivation device housing (1).

4. The surface treatment device for TOPCon battery processing according to claim 1, characterized in that: The moving mechanism (4) comprises vertical plates (41) fixedly arranged on the outer walls of both sides of the passivation device housing (1), and rotation slots (42) respectively provided on the vertical plates (41); a dual-axis motor (43) is fixedly connected to the bottom of the passivation device housing (1); and shafts (44) are fixedly connected to the output shafts at both ends of the dual-axis motor (43).

5. The surface treatment device for TOPCon battery processing according to claim 4, characterized in that: One end of the shaft (44) is fixedly connected to a driving gear (45), one side of the driving gear (45) is provided with a meshing driven gear (46), and a screw rod (47) is fixedly connected to the driven gear (46).

6. The surface treatment device for TOPCon battery processing according to claim 5, characterized in that: The top end of the screw rod (47) passes through the bottom of the vertical plate (41) and extends into the rotating groove (42). The two ends of the bottom of the traction plate (31) are respectively fixedly connected with connecting sleeves (48). The connecting sleeves (48) are inserted into the rotating groove (42) and threadedly sleeved on the screw rod (47).

7. The surface treatment device for TOPCon battery processing according to claim 6, characterized in that: The bottom ends of the vertical plate (41) are respectively provided with through openings, and the inner sides of the through openings are provided with ball bearings (49) fixed to the vertical plate (41), and the screw rod (47) is fixedly inserted in the ball bearings (49).

8. The surface treatment device for TOPCon battery processing according to claim 1, characterized in that: Four supporting legs (5) arranged in a rectangular shape are fixedly connected to the bottom of the passivation device housing (1), and a connecting pipe (6) is fixedly inserted into one side of the passivation device housing (1).

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