A battery string processing device

Abstract

This application relates to the field of photovoltaic cell processing, and more particularly to a cell string processing apparatus for processing cell strings, wherein the cell string includes a plurality of solar cells and solder strips, and the plurality of solar cells are connected by the solder strips; the processing apparatus includes: a platform for supporting the cell string; and a cutting assembly disposed on one side of the platform, the cutting assembly being used to cut the solder strips on the cell string, the cutting assembly having cutting points at which the solder strips are cut; the cutting assembly and the platform are movable relative to each other so that the cutting assembly can cut the solder strips at different positions on the cell string. By absorbing solder strip debris, the technical effect of reducing the risk of short circuits and contamination caused by solder strip breakage is achieved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic cell processing, and in particular to a battery string processing apparatus. Background Technology

[0002] Amid the wave of large-scale development in the photovoltaic industry, solar cells, as the core component of modules, are facing an urgent need for manufacturing process upgrades. As a crucial step in series-connected cell production, the precision and stability of the solder ribbon cutting directly impact the module's power output and reliability. Currently, among mainstream processes, mechanical cutting uses mature blade cutting technology to segment the solder ribbon, which, while low-cost, is prone to burrs and dimensional deviations. Laser cutting, with its micron-level processing precision and non-contact operation advantages, has become the standard process for high-efficiency cells such as PERC and HJT, especially in high-density grid line designs where it can precisely control the kerf width to ensure maximum current transmission efficiency.

[0003] In existing technologies, when pulsed lasers vaporize materials instantaneously, molten metal particles are sputtered at high speed, some of which adhere to the surface of the solar cell to form conductive particles, which may cause local short circuits and contamination; the debris that is not completely peeled off remains in the gaps between the grid lines, becoming a potential leakage channel after the module is laminated.

[0004] Therefore, the technical problem with the existing technology is that the breakage of the solder strip causes a high risk of battery short circuit and contamination. Utility Model Content

[0005] This application provides a battery string processing device that reduces the risk of battery short circuits and contamination caused by solder ribbon breakage by absorbing solder ribbon debris.

[0006] This application provides a battery string processing device, which adopts the following technical solution:

[0007] A battery string processing apparatus is disclosed for processing battery strings, the battery strings comprising a plurality of battery cells and solder strips, the plurality of battery cells being connected by the solder strips; the processing apparatus comprises: a platform for supporting the battery strings; and a cutting assembly disposed on one side of the platform, the cutting assembly being used to cut the solder strips on the battery strings, the cutting assembly having cutting points at which the solder strips are cut; the cutting assembly and the platform are movable relative to each other so that the cutting assembly can cut the solder strips at different positions on the battery strings.

[0008] Preferably, the device further includes an air suction component, which is disposed on one side of the cutting point and is used to suck up welding strip debris formed during cutting.

[0009] Preferably, the suction assembly is located above the cutting point so that it can suck up the welding strip debris.

[0010] Preferably, the platform includes: a sub-platform, having at least two sub-platforms for carrying solar cells; and multiple sub-platforms spaced apart to form a gap between adjacent sub-platforms, such that the solder strips between the solar cells and the cutting points are located in the gap.

[0011] Preferably, the suction component is located below the cutting point, and the suction component can suck up welding strip debris downward through the gap.

[0012] Preferably, the suction assembly has two sets, defined as a first suction assembly and a second suction assembly; the first suction assembly is located above the cutting point so that the first suction assembly can suck up the solder strip debris upwards; the second suction assembly is located below the cutting point so that the second suction assembly can suck up the solder strip debris downwards through the gap.

[0013] Preferably, the sub-platform is movable to drive the battery string transmission.

[0014] Preferably, the sub-platform is provided with a transmission component, which is used to drive the battery string.

[0015] Preferably, the distance from the suction component to the cutting point is defined as L, and the suction component is movable so that the distance L is adjustable.

[0016] Preferably, the cutting component is a laser component, and the suction component includes: a cover, the cover being disposed above the cutting point and surrounding the laser component so that the laser component passes through the cover and acts on the welding strip; and a negative pressure generator connected to the cover for generating negative pressure within the cover.

[0017] In summary, this application includes at least one of the following beneficial technical effects:

[0018] This application incorporates an air-suction component at the solder ribbon cutting point of the battery string, which can extract solder ribbon debris generated during or near the cutting point. This achieves the technical effect of reducing the risk of battery short circuits and contamination caused by solder ribbon breakage. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a battery string to which the processing apparatus described in this application is applicable;

[0020] Figure 2 This is a schematic diagram of the processing apparatus described in this application;

[0021] Figure 3 This is a schematic diagram of the first type of air intake component of the processing apparatus described in this application;

[0022] Figure 4 This is a schematic diagram of a second type of air intake component of the processing apparatus described in this application;

[0023] Figure 5 This is a schematic diagram of the air intake assembly of the processing apparatus described in this application.

[0024] Explanation of reference numerals in the attached drawings: 100, battery string; 110, welding strip; 120, battery cell; 200, platform; 210, sub-platform; 220, space between sections; 300, cutting assembly; 310, cutting point; 400, suction assembly; 410, first suction cutting assembly; 420, second suction assembly; 430, cover; 440, negative pressure generator. Detailed Implementation

[0025] The serial numbers assigned to components in this document, such as "first" and "second," are used solely to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used solely for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0027] This application provides a battery string 100 processing device, which reduces the risk of battery short circuits and contamination caused by broken solder ribbon 110 by absorbing solder ribbon 110 debris.

[0028] To better understand the above technical solutions, a detailed description of the technical solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application.

[0029] This invention proposes a battery string 100 processing device for processing battery strings 100, such as... Figure 1 As shown, the battery string 100 includes a plurality of battery cells 120 and solder ribbons 110, with the battery cells 120 connected by the solder ribbons 110 (the attached figure uses a BC battery as an example; the applicable batteries for this application include, but are not limited to, BC batteries). Figure 2 As shown, the processing device includes a platform 200 and a cutting assembly 300. The platform 200 supports the battery string 100, providing a stable support foundation for it. The cutting assembly 300 is located on one side of the platform 200, and its main function is to cut the solder strip 110 on the battery string 100. The cutting assembly 300 has cutting points 310, where the solder strip 110 is cut. Simultaneously, the cutting assembly 300 and the platform 200 are relatively movable. This design allows the cutting assembly 300 to cut at different positions on the solder strip 110 of the battery string 100, meeting the needs of processing battery strings 100 of different lengths and layouts, thus improving the versatility and flexibility of the device.

[0030] In one embodiment, such as Figure 2 As shown, platform 200 is a rectangular, flat structure used to support the battery string 100, ensuring its stability during processing. A cutting assembly 300 is positioned on one side of platform 200. In one embodiment, the cutting assembly 300 employs a laser assembly capable of generating a high-energy laser beam that precisely targets the cutting point 310 of the solder strip 110, achieving rapid cutting of the solder strip 110. The cutting assembly 300 can move relative to platform 200 via a driving device. When processing battery strings 100 of different lengths or layouts, the cutting assembly 300 can move above platform 200 along a predetermined trajectory to reach different positions of the solder strip 110 in the battery string 100 for cutting operations; alternatively, by moving platform 200, the cutting assembly 300 can also cut at different positions of the solder strip 110 in the battery string 100.

[0031] Furthermore, such as Figure 2 As shown, the battery string 100 processing device also includes a suction assembly 400, which is disposed on one side of the cutting point 310. Its function is to suck up the solder ribbon 110 debris generated during cutting, preventing the debris from adhering to the surface of the battery cell 120 or remaining in the grid gaps, thereby reducing the risk of battery short circuits and contamination. In some embodiments, the suction assembly 400 is located above the cutting point 310, which allows for convenient upward suction of the solder ribbon 110 debris generated during the cutting process, promptly removing the debris from the surface and surrounding area of ​​the battery cell 120, further improving the cleaning effect and the cleanliness of the battery cell 120.

[0032] Considering the actual processing layout and debris collection efficiency, such as Figure 3 , 4 As shown, platform 200 includes sub-platforms 210, of which at least two are used to support the solar cells 120. Multiple sub-platforms 210 are spaced apart, with gaps 220 formed between adjacent sub-platforms 210, such that the welding ribbons 110 connecting the solar cells 120 and the cutting points 310 are located within the gaps 220. This design not only provides sufficient operating space for the cutting assembly 300 but also creates conditions for the suction assembly 400 to extract debris from below.

[0033] In other words, such as Figure 3 , 4 As shown, platform 200 is specifically composed of multiple sub-platforms 210, which are spaced apart on the base of platform 200, forming a gap space 220 between adjacent sub-platforms 210. Battery cells 120 are placed on the sub-platforms 210, and the welding ribbons 110 connecting the battery cells 120 are located above the gap space 220. The cutting point 310 is positioned directly above the gap space 220. This provides an unobstructed path for the laser beam of the cutting assembly 300, facilitating the cutting of the welding ribbons 110, and also creates space for the second suction assembly 420 to extract debris from below.

[0034] Accordingly, such as Figure 4 As shown, the suction component 400 can be located below the cutting point 310 and can suck up the welding strip 110 debris downward through the interval space 220, so as to collect the debris from different directions and improve the comprehensiveness and thoroughness of debris cleaning.

[0035] To further optimize debris collection, such as Figure 4 As shown, the suction assembly 400 can be configured with two sets, defined as a first suction assembly 400 and a second suction assembly 420. The first suction assembly 400 is located above the cutting point 310 and is responsible for upward suction of solder ribbon 110 debris; the second suction assembly 420 is located below the cutting point 310 and downward suction of solder ribbon 110 debris through the gap space 220. Through the simultaneous action of the two suction assemblies 400, solder ribbon 110 debris generated in various directions and positions during the cutting process can be collected more efficiently, minimizing debris residue.

[0036] Furthermore, such as Figure 4As shown, the suction port of the first suction component 400 faces the area above the cutting point 310, and can promptly suck up the welding strip 110 debris generated during the cutting process; the suction port of the second suction component 420 is located below the cutting point 310 and faces the cutting point 310, and sucks up the welding strip 110 debris downward through the gap space 220 between the sub-platforms 210. The debris is collected from both the top and bottom directions at the same time, which greatly improves the efficiency and thoroughness of debris cleaning.

[0037] In some cases, to facilitate the transfer of the battery string 100 during processing, the sub-platform 210 can be designed to be movable, thereby driving the battery string 100 for transmission, enabling the battery string 100 to move smoothly between different workstations of the processing device, improving processing efficiency and automation. Furthermore, a transmission assembly can also be installed on the sub-platform 210 specifically for driving the battery string 100.

[0038] In one embodiment, the sub-platform 210 is movable, and its bottom is equipped with a conveyor belt, guide rail, or other driving structure to enable synchronous movement. This allows the sub-platform 210 to smoothly drive the battery string 100 along a predetermined direction, achieving automated transmission of the battery string 100 between various workstations in the processing device and improving processing efficiency. In another embodiment, the sub-platform 210 can be fixed, and a transmission component, such as a conveyor belt, is provided on it to transport the battery string 100. It should be noted that when the battery string 100 needs to be cut, by notifying the conveyor belt on the sub-platform 210 of its progress, the battery cell 120 can be positioned on the sub-platform 210, while the welding strip 110 to be cut is positioned in the gap space 220, ensuring that the cutting assembly 300 can accurately cut the welding strip 110.

[0039] Regarding the relative positional relationship between the suction component 400 and the cutting point 310, the distance between the suction component 400 and the cutting point 310 is defined as L. The suction component 400 is movable, allowing the distance L to be adjustable. This adjustable design allows for flexible adjustment of the distance between the suction component 400 and the cutting point 310 based on the actual cutting conditions and the amount of debris generated, achieving the best suction effect. This effectively collects debris without affecting the normal operation of the cutting component 300 or causing unnecessary interference to the battery cell 120 due to excessive distance.

[0040] Furthermore, the distance from the suction component 400 to the cutting point 310 is defined as L. The suction component 400 is movable, making the distance L adjustable. In this embodiment, the suction component 400 is mounted on an adjustable bracket to adjust the distance L. The adjustable bracket is equipped with a slide rail and a locking screw. The suction component 400 can slide up and down along the slide rail. After being adjusted to a suitable position, it is fixed by the locking screw, thereby changing the distance L between the suction component 400 and the cutting point 310. This allows for flexible adjustment of the position of the suction component 400 according to the amount and spatter range of welding strip 110 debris generated during actual cutting, achieving the best suction effect. This effectively collects debris without interfering with the normal operation of the cutting component 300.

[0041] In one embodiment, when the cutting assembly 300 uses a laser assembly, such as Figure 4 As shown, the suction assembly 400 includes a housing 430 and a negative pressure generator 440. The housing 430 is positioned above the cutting point 310 and surrounds the laser assembly, allowing the laser assembly to pass through the housing 430 and act on the welding ribbon 110. The negative pressure generator 440 is connected to the housing 430 and is used to create a negative pressure inside the housing 430, thereby generating suction near the cutting point 310. This suction draws the debris generated during the cutting of the welding ribbon 110 into the housing 430 and discharges it, achieving effective collection and treatment of the debris.

[0042] For the cooperative structure of the laser component and the suction component 400, the cover 430 is a circular or square hollow shell structure, positioned above the cutting point 310 and closely surrounding the light outlet of the laser component. This allows the laser beam from the laser component to pass smoothly through the cover 430 and accurately act on the cutting point 310 of the welding strip 110. The cover 430 and the laser component are sealed together by a sealing ring or other sealing structure to prevent air leakage from affecting the suction effect. A negative pressure generator 440, such as a vacuum pump, is connected to the cover 430. When the negative pressure generator 440 is working, it creates a negative pressure environment inside the cover 430, thereby generating a strong suction force near the cutting point 310. This force promptly draws molten metal particles and other debris generated instantaneously during the cutting of the welding strip 110 into the cover 430 and discharges them to the outside through connecting pipes. This achieves effective collection and treatment of the welding strip 110 debris, preventing debris from contaminating the battery cell 120 and posing a short-circuit risk.

[0043] In actual operation, the battery string 100 to be processed is first placed on the sub-platform 210. The laser component of the cutting assembly 300 starts working according to the preset program, generating a high-energy laser beam that irradiates the cutting point 310 of the solder ribbon 110, causing the solder ribbon 110 to melt and be cut instantly at the cutting point 310. At the same time, the suction assembly 400 starts working. The first suction assembly 400 is located above the cutting point 310, promptly sucking up the solder ribbon 110 debris that splashes upward during the cutting process; the second suction assembly 420 sucks up the debris that falls downward or remains during the cutting process through the gap space 220. A negative pressure area is formed around the cutting point 310, further enhancing the debris collection capacity and ensuring that all kinds of debris near the cutting point 310 can be effectively cleaned up, thereby ensuring the cleanliness of the surface of the battery cell 120, reducing the risk of battery short circuit and contamination, and improving the quality and reliability of the photovoltaic module.

[0044] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0045] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A battery string processing apparatus, characterized in that, For processing battery strings (100), the battery strings (100) include a plurality of battery cells (120) and solder strips (110), the plurality of battery cells (120) being connected by the solder strips (110); the processing apparatus includes: Platform (200), said platform (200) is used to carry battery strings (100); A cutting component (300) is disposed on one side of the platform (200). The cutting component (300) is used to cut the solder strips (110) on the battery string (100). The cutting component (300) has cutting points (310) at which the solder strips (110) are cut. The cutting component (300) and the platform (200) are movable relative to each other so that the cutting component (300) can cut the solder strips (110) at different positions on the battery string (100).

2. The battery string processing apparatus according to claim 1, characterized in that, Also includes: A suction assembly (400) is disposed on one side of the cutting point (310) and is used to suck up the welding strip (110) debris formed by cutting.

3. The battery string processing apparatus according to claim 2, characterized in that, The suction assembly (400) is located above the cutting point (310) so that the suction assembly (400) can suck up the solder strip (110) debris.

4. The battery string processing apparatus according to claim 2, characterized in that, The platform (200) includes: Sub-platforms (210), at least two of which are used to support the battery cells (120); the multiple sub-platforms (210) are spaced apart so that a gap space (220) is formed between adjacent sub-platforms (210) so that the solder strips (110) between the battery cells (120) and the cutting points (310) are located on the gap space (220).

5. The battery string processing apparatus according to claim 4, characterized in that, The suction assembly (400) is located below the cutting point (310), and the suction assembly (400) can suck up the welding strip (110) debris downward through the gap space (220).

6. The battery string processing apparatus according to claim 4, characterized in that, The air intake assembly (400) has two sets, defined as a first air intake assembly (400) and a second air intake assembly (420); The first suction assembly (400) is located above the cutting point (310) so that the first suction assembly (400) can suck up the solder strip (110) debris. The second suction component (420) is located below the cutting point (310) and can suck up the welding strip (110) debris downward through the gap space (220).

7. The battery string processing apparatus according to claim 4, characterized in that, The sub-platform (210) is movable to drive the battery string (100) through a transmission.

8. The battery string processing apparatus according to claim 4, characterized in that, The sub-platform (210) is provided with a transmission component, which is used to drive the battery string (100).

9. The battery string processing apparatus according to claim 2, characterized in that, The distance from the suction component (400) to the cutting point (310) is defined as L. The suction component (400) is movable so that the distance L is adjustable.

10. The battery string processing apparatus according to claim 2, characterized in that, The cutting assembly (300) is a laser assembly, and the suction assembly (400) includes: A cover (430) is disposed above the cutting point (310). The cover (430) surrounds the laser assembly so that the laser assembly passes through the cover (430) and acts on the welding strip (110). A negative pressure generator (440) is connected to the cover (430) and is used to generate negative pressure inside the cover (430).

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