Battery piece dust removal device of photovoltaic battery screen printing machine

Abstract

The utility model provides a photovoltaic cell screen printing machine cell piece dust removal device which comprises a box body, a conveying device and a dust removal device, the conveying device is arranged at the bottom of the box body, and a cell piece to be cleaned is placed on the conveying device; a dust removal device is arranged above the conveying device, and a first distance is formed between the dust removal device and the to-be-cleaned battery piece; motors are arranged at the two ends of the dust removal device respectively, the motors are fixed to the side wall of the box body, and the dust removal device is coaxially connected with rotating shafts of the motors; the top of the box body is further provided with a dust suction device, and the dust suction device is arranged on the central axis of the dust removal device and penetrates out of the top of the box body. According to the battery piece dust removal device of the photovoltaic battery screen printing machine, dust on the surface of the battery piece can be efficiently and evenly removed before the battery piece enters a screen printing procedure, and meanwhile new pollutants are prevented from being introduced or the surface of the battery piece is prevented from being damaged in the cleaning process.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell manufacturing, in particular to a photovoltaic cell screen printer cell sheet dust removal device. Background Art

[0002] Photovoltaic cell production is a precision process, especially when using Topcon technology. Surface cleanliness has a crucial impact on cell performance and overall production yield. Topcon technology enhances photovoltaic conversion efficiency by applying a specific coating to the cell surface. However, subsequent cell cleanliness remains a major challenge within the industry.

[0003] In Topcon's workshop, after the coating process, solar cells must maintain extremely high cleanliness levels during transfer to the screen-printing process. However, existing production processes present the following challenges: Air exposure risk - During transportation between coating and screen printing, solar cells are fully exposed to the workshop air, easily absorbing airborne dust and particulates. These contaminants directly impact cell quality and the success rate of the printing process. Cleaning brushes - While they can physically remove some dust, the hard bristles can scratch the cell surface, damaging not only the appearance but also electrical performance. Cleaning with dust-free cloths - Dust accumulates during the wiping process, potentially contaminating subsequent cells. Fan-assisted cleaning - Wind speed is difficult to control. Too little wind can't effectively remove dust, while too much wind can shift or damage the cells. Uneven wind speed can also cause cell shifting during transport, impacting printing accuracy.

[0004] Due to the above problems, the existing cleaning methods cannot effectively ensure that the solar cells are dust-free before each printing, resulting in the production of dusty cells, which in turn affects the overall production yield. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that the cleaning device damages the battery cell film during the cleaning process.

[0006] The utility model provides a photovoltaic cell screen printing machine cell dust removal device, comprising a box, a conveying device and a dust removal device, wherein the conveying device is placed at the bottom of the box, and the cell to be cleaned is placed on the conveying device;

[0007] A dust removal device is provided above the conveying device, and a first distance is provided between the dust removal device and the battery cell to be cleaned; a motor is provided at each end of the dust removal device, the motor being fixed to the side wall of the box, and the dust removal device is coaxially connected to the rotating shaft of the motor;

[0008] A dust suction device is also provided on the top of the box body. The dust suction device is placed on the central axis of the dust removal device and passes through the top of the box body.

[0009] Furthermore, the dust removal device includes a cleaning rod and a plurality of cleaning wires, both ends of the cleaning rod are fixedly connected to the output shaft of the motor respectively, and the cleaning wires are fixed to the outer circumference of the cleaning rod.

[0010] Furthermore, there is an angle between the cleaning wire and the cleaning rod.

[0011] Furthermore, the angle range is 50°-90°.

[0012] Furthermore, the cleaning wire is placed above the battery cell to be cleaned, and a first distance is set between the cleaning wire and the battery cell to be cleaned.

[0013] Furthermore, the first distance ranges from 1 mm to 2 mm.

[0014] Furthermore, a plurality of the cleaning filaments are evenly distributed around the cleaning rod to form a cleaning filament group. The cleaning filament groups are spaced apart along the length direction of the cleaning rod, and a second distance is set between adjacent cleaning filament groups.

[0015] Furthermore, the second distance is less than or equal to 1 cm.

[0016] Furthermore, the conveying device includes a conveying track and a conveyor belt. The conveyor belt runs along the conveying track, and the battery cells to be cleaned are placed on the conveyor belt.

[0017] Furthermore, the motor is threadedly connected to the side wall of the box.

[0018] Compared to existing technologies, the present invention offers at least the following advantages: The coordinated operation of the conveyor and dust removal devices enables continuous and efficient cleaning of battery cells, reducing the defective rate caused by dust contamination. The non-contact cleaning method maintains a distance between the cleaning wire and the battery cells, effectively preventing damage to the cell surface during the cleaning process and maintaining cell quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0020] Figure 1This is a schematic diagram of a photovoltaic cell screen printing machine cell dust removal device in one embodiment of the present invention;

[0021] Among them, 1-transmission track; 2-battery cell; 3-motor; 4-cleaning rod; 5-cleaning wire; 6-dust suction device. DETAILED DESCRIPTION

[0022] The following is a more detailed description of a photovoltaic cell screen printer cell dust removal device according to the present invention, with reference to schematic diagrams. These schematic diagrams illustrate preferred embodiments of the present invention. It should be understood that those skilled in the art may modify the present invention as described herein while still achieving its beneficial effects. Therefore, the following description should be understood as generally known to those skilled in the art and not as a limitation of the present invention.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "includes," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0025] This utility model provides a photovoltaic cell screen printing machine cell dust removal device, please refer to Figure 1 , including a box (not shown in the figure), a conveying device and a dust removal device. The conveying device is placed at the bottom of the box, and the battery cell 2 to be cleaned is placed on the conveying device.

[0026] A dust removal device is provided above the conveying device, and a first distance is provided between the dust removal device and the battery cell 2 to be cleaned; motors 3 are provided at both ends of the dust removal device, and the motors 3 are fixed on the side walls of the box, and the dust removal device is coaxially connected to the rotating shaft of the motor 3.

[0027] A dust collecting device 6 is further provided on the top of the box body. The dust collecting device 6 is placed on the central axis of the dust removing device and passes through the top of the box body.

[0028] In this embodiment, the housing is the main structure of the dust removal system, providing a closed operating environment for the conveyor and dust removal devices within. This prevents dust from spreading into the workshop during the cleaning process and protects the internal components. The conveyor is located at the bottom of the housing, and its primary function is to carry and transport the battery cells to be cleaned. Battery cells 2 are placed on the conveyor, and through its operation, the battery cells 2 are sequentially transported into the dust removal area for cleaning.

[0029] The dust removal device is located above the conveyor and is responsible for cleaning the surface of the battery cells 2. A motor 3 is located at each end of the dust removal device. These motors 3 are connected to the dust removal device via a rotating shaft, enabling the dust removal device to rotate or vibrate to remove dust from the surface of the battery cells 2. The dust removal device may be a brush, roller, or other mechanism that effectively removes dust.

[0030] The dust collection device 6 is located at the top of the box, exactly on the central axis of the dust removal device, and extends out of the top of the box. Its function is to simultaneously remove dust from the surface of the battery cells while the dust removal device is removing it, and to suck the dust out of the box to prevent it from settling back on the battery cells or dispersing into the workshop environment.

[0031] Furthermore, the dust removal device includes a cleaning rod 4 and a plurality of cleaning wires 5 . Both ends of the cleaning rod 4 are fixedly connected to the output shaft of the motor 3 , and the cleaning wires 5 are fixed to the outer periphery of the cleaning rod 4 .

[0032] Furthermore, there is an angle between the cleaning wire 5 and the cleaning rod 4 .

[0033] Furthermore, the angle range is 50°-90°.

[0034] Specifically, cleaning rod 4 is a key component of the dust removal device. Its two ends are fixedly connected to the output shaft of motor 3. As the motor runs, cleaning rod 4 rotates, driving cleaning filaments 5 fixed to its outer circumference to perform cleaning operations. Cleaning filaments 5 are fixed to the outer circumference of the cleaning rod and are used to remove dust.

[0035] The material and design of the cleaning wire 5 must ensure that the battery cells 2 are not damaged during the cleaning process. In this embodiment, a specific angle is formed between the cleaning wire 5 and the cleaning rod 4. This angle is designed to optimize the cleaning effect. In this embodiment, the angle is preferably 90°.

[0036] Furthermore, the cleaning wire 5 is placed on the battery cell 2 to be cleaned, and a first distance is set between the cleaning wire 5 and the battery cell 2 to be cleaned.

[0037] Furthermore, the first distance ranges from 1 mm to 2 mm.

[0038] Specifically, due to the second distance between the cleaning wire 5 and the cell 2 to be cleaned, the cleaning wire 5 does not directly contact the cell 2 when the cleaning device is in operation, thus preventing damage to the thin film on the cell 2. Simultaneously, the rotation of the motor 3 drives the cleaning rod 4 and the cleaning wire 5 to rotate. The rotation of the cleaning wire 5 also generates airflow, which in turn removes dust from the surface of the cell 2, thereby cleaning the cell 2. In this embodiment, the first distance is preferably 1.5 mm.

[0039] Furthermore, a plurality of the cleaning filaments 5 are evenly distributed around the cleaning rod 4 to form a cleaning filament group. The cleaning filament groups are spaced apart along the length direction of the cleaning rod 4 , and a second distance is set between adjacent cleaning filament groups.

[0040] Furthermore, the second distance is less than or equal to 1 cm.

[0041] In this embodiment, multiple cleaning wires 5 are evenly distributed around the cleaning rod, which ensures that the airflow generated when the cleaning rod 4 rotates is uniform, and each part of the surface of the battery cell 2 can be evenly cleaned, thereby improving cleaning efficiency and consistency.

[0042] The number of cleaning filaments 5 in a cleaning filament group is not fixed. In one possible embodiment of the present invention, a single cleaning filament group may consist of two cleaning filaments 5, with the two cleaning filaments 5 spaced 180° apart in the circumferential direction. The two cleaning filaments 5 may be located on the same cross-section or on different cross-sections (i.e., staggered). In another possible embodiment of the present invention, a single cleaning filament group may consist of three cleaning filaments 5, with each two cleaning filaments 5 spaced 120° apart in the circumferential direction. To achieve a better cleaning effect, those skilled in the art may adjust the number of cleaning filaments 5 to achieve this.

[0043] Regarding the second distance, if the second distance is too small, the cleaning wires may interfere with each other, affecting the cleaning effect. If the second distance is too large, it may leave uncleaned areas on the surface of the battery cell, requiring multiple cleanings. Preferably, the second distance is 3 mm.

[0044] Furthermore, the conveying device includes a conveying track 1 and a conveyor belt. The conveyor belt runs along the conveying track 1, and the battery cell 2 to be cleaned is placed on the conveyor belt.

[0045] Please continue to refer to Figure 1The conveyor track 1 is the basic structure of the conveyor device, which provides a fixed running path for the conveyor belt. The design of the conveyor track 1 needs to ensure that the battery cells 2 move stably and accurately during the conveying process to avoid deviation or falling. The conveyor belt is the movable part of the conveyor device, which runs along the conveyor track. The function of the conveyor belt is to carry the battery cells 2 to be cleaned and smoothly send them to the dust removal area. The battery cells 2 to be cleaned are placed on the conveyor belt. When the conveyor belt starts and runs along the conveyor track, the battery cells 2 will move with it, pass through the dust removal device in turn, and receive cleaning treatment.

[0046] Furthermore, the motor is threadedly connected to the side wall of the housing. This threaded connection improves the assembly and maintenance convenience of the device. The threaded connection simplifies the installation and removal of the motor, facilitating routine maintenance and troubleshooting. This enhances the stability and durability of the device. The secure connection ensures the motor's stability over extended periods of operation, reducing the failure rate caused by connection issues. Furthermore, the flexibility of the threaded connection allows the device to adapt to varying production environments and changing production conditions.

[0047] The following is the operation process of the photovoltaic cell screen printing machine cell dust removal device in this embodiment:

[0048] The cell 2 is transported to the printer CV1 via the conveyor track 1. When the cell reaches the cleaning area of ​​the printer CV1, the motor 3 begins to rotate. The rotation of the motor 3 drives the cleaning rod 4 to rotate, and the cleaning wire 5 on the cleaning rod 4 also rotates. As the cleaning wire 5 rotates, it generates an airflow above the cell. This airflow can lift the dust on the surface of the cell and suspend it. As the dust is carried by the airflow, the dust suction device 6 located above is activated to suck away the suspended dust. The control switch and storage box of the dust suction device 6 are located on the top of the printer. The operator can manually turn the dust suction device on or off to ensure the effective cleaning process. With the combined action of the cleaning wire 5 and the dust suction device 6, the dust on the surface of the cell 2 is successfully removed. The cleaned cell continues to move along the conveyor track 1, ready to enter the next printing process.

[0049] In summary, in this embodiment, the coordinated operation of the conveyor and dust removal devices enables continuous and efficient cleaning of the battery cells, reducing the defective rate caused by dust contamination. The non-contact cleaning method maintains a distance between the cleaning wire and the battery cells, effectively avoiding damage to the battery cell surface during the cleaning process and maintaining the quality of the battery cells. The combined use of the dust collection device can promptly remove dust generated during the cleaning process, preventing dust from re-depositing on the battery cells and ensuring effective cleaning.

[0050] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A photovoltaic cell screen printing machine cell sheet dust removal device, comprising a box, a conveying device and a dust removal device, characterized in that: The transmission device is placed at the bottom of the box, and the battery slices to be cleaned are placed on the transmission device; A dust removal device is provided above the conveying device, and a first distance is provided between the dust removal device and the battery cell to be cleaned; a motor is provided at each end of the dust removal device, the motor being fixed to the side wall of the box, and the dust removal device is coaxially connected to the rotating shaft of the motor; A dust suction device is also provided on the top of the box body. The dust suction device is placed on the central axis of the dust removal device and passes through the top of the box body.

2. The photovoltaic cell screen printer cell dust removal device according to claim 1, characterized in that: The dust removal device includes a cleaning rod and a plurality of cleaning wires. Both ends of the cleaning rod are fixedly connected to the output shaft of the motor respectively, and the cleaning wires are fixed on the outer periphery of the cleaning rod.

3. The photovoltaic cell screen printing machine cell dust removal device according to claim 2, characterized in that: An angle is formed between the cleaning wire and the cleaning rod.

4. The photovoltaic cell screen printing machine cell dust removal device according to claim 3, characterized in that: The angle range of the included angle is 50°-90°.

5. The photovoltaic cell screen printing machine cell dust removal device according to claim 2, characterized in that: The cleaning wire is placed above the battery cell to be cleaned and has a first distance between it and the battery cell to be cleaned.

6. The photovoltaic cell screen printer cell dust removal device according to claim 5, characterized in that: The first distance ranges from 1 mm to 2 mm.

7. The photovoltaic cell screen printer cell dust removal device according to claim 2, characterized in that: A plurality of cleaning filaments are evenly distributed around the cleaning rod to form cleaning filament groups. The cleaning filament groups are spaced apart along the length direction of the cleaning rod, and a second distance is set between adjacent cleaning filament groups.

8. The photovoltaic cell screen printer cell dust removal device according to claim 7, characterized in that: The second distance is less than or equal to 1 cm.

9. The photovoltaic cell screen printer cell dust removal device according to claim 1, characterized in that: The conveying device includes a conveying track and a conveying belt. The conveying belt runs along the conveying track, and the battery slices to be cleaned are placed on the conveying belt.

10. The photovoltaic cell screen printer cell dust removal device according to claim 1, characterized in that: The motor is threadedly connected to the side wall of the box.

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