Cell box for placing photovoltaic cells

Abstract

The utility model relates to the field of solar cells, and provides a cell box for placing photovoltaic cells, which comprises a box body and a fixing structure, a placing cavity is arranged in the box body, the box body is provided with a pair of processing windows, the pair of processing windows are respectively positioned on two opposite sides of the placing cavity, the placing cavity is suitable for placing the cells with two opposite cutting surfaces, and the fixing structure is arranged on the fixing structure. The pair of processing windows is suitable for exposing two cutting surfaces of the battery piece; the fixing structure is suitable for fixing the battery piece in the placing cavity. According to the piece box for placing the photovoltaic battery pieces, passivation and film coating processing can be effectively carried out on two opposite cutting surfaces of the battery pieces at the same time, the structure is simple and reasonable, the production efficiency is greatly improved, automatic assembling, taking and placing can be simply and conveniently carried out, the film coating quality can be improved, and winding plating is reduced.

Description

Technical Field

[0001] The utility model relates to the field of solar cells, and further relates to a cassette for placing photovoltaic cells. Background Art

[0002] With the rapid development of photovoltaic power generation technology, as the core component of it, the photoelectric conversion efficiency and production cost of solar cells have become the focus of the industry. In order to improve the overall performance of the solar photovoltaic system and reduce the manufacturing cost, in recent years, the cutting process of the cells has been continuously optimized. Similar to the half-cell technology, the cutting method of dividing the cell into three pieces is also to accurately cut the whole cell into three equal or unequal small pieces through a certain cutting process (such as laser cutting, mechanical cutting, etc.). The purpose of this is usually to further reduce the packaging loss, improve the power generation efficiency and reliability of the module, and may bring optimization of the manufacturing cost. However, this more refined cutting method also brings new technical challenges, especially in the surface passivation and coating processes of the cells.

[0003] The cassette is a carrier for the cells to enter the coating equipment for sidewall passivation after being sliced, ensuring the effective progress of the passivation treatment, and also guaranteeing the safety and quality of the cells during the passivation process. When dealing with the three-piece cut traditionally, it is necessary to coat multiple cut surfaces of the three-piece cut separately, and the operation convenience is insufficient. When loading and unloading the cells, the operation is complex, time-consuming and laborious. Moreover, each time only one cut surface can be coated, resulting in low space utilization rate of the thin film deposition equipment. Summary of the Utility Model

[0004] Aiming at the above technical problems, the purpose of the utility model is to provide a cassette for placing photovoltaic cells, which can effectively carry out passivation and coating processing on two opposite cut surfaces of the cells at the same time, with a simple and reasonable structure, greatly improving the production efficiency, and can be simply assembled and taken and placed automatically, which is beneficial to improving the coating quality and reducing the overcoating.

[0005] In order to achieve the above purpose, the utility model provides a cassette for placing photovoltaic cells, including a box body and a fixing structure. A placement cavity is arranged in the box body. The box body has a pair of processing windows, and the pair of processing windows are respectively located on opposite sides of the placement cavity. The placement cavity is suitable for placing a cell with two opposite cut surfaces, and the pair of processing windows are suitable for exposing the two cut surfaces of the cell;

[0006] The fixing structure is suitable for fixing the cell in the placement cavity.

[0007] In some embodiments, a pair of the processing windows are respectively located on the front and back of the box body. The box body includes a left side plate, a right side plate, a bottom plate, and a top plate. The left side plate and the right side plate are oppositely arranged at two ends of the bottom plate, and the top plate is arranged on top of the left side plate and the right side plate. The solar cell is horizontally arranged in the placement cavity.

[0008] In some embodiments, the top plate is detachably installed on top of the left side plate and the right side plate and presses the solar cell in the placement cavity.

[0009] In some embodiments, the left side plate and / or the right side plate are movably arranged on top of the bottom plate, and the top plate is connected to the left side plate or the right side plate, so that the distance between the left side plate and the right side plate can be adjusted.

[0010] In some embodiments, it further includes a movable plate. The movable plate is separably arranged on top of the bottom plate, and the top of the movable plate is suitable for stacking the solar cells.

[0011] In some embodiments, the fixing structure includes a pair of fixing grooves. The pair of fixing grooves are respectively arranged on the opposite sides of the left side plate and the right side plate, and the left and right ends of the solar cell are suitable for being clamped in the fixing grooves.

[0012] In some embodiments, the fixing structure includes a plurality of columns. A plurality of card slots are respectively arranged at the front and rear ends of the top plate. The columns are suitable for being clamped and fixed in the card slots and abutting against the front and rear ends of the solar cell.

[0013] In some embodiments, it further includes a positioning assembly. The positioning assembly includes a plurality of first positioning members and a plurality of second positioning members. The plurality of first positioning members are respectively arranged on the mutually remote sides of the left side plate and the right side plate; the plurality of second positioning members are arranged on top of the left side plate and the right side plate.

[0014] In some embodiments, it further includes a plurality of third positioning members. The third positioning members are arranged at intervals on the bottom of the bottom plate.

[0015] In some embodiments, there are two box bodies, and the two box bodies are arranged at intervals front and back in the coating space.

[0016] Compared with the prior art, the cassette for placing photovoltaic cells provided by the present utility model has at least one of the following beneficial effects:

[0017] 1. It can effectively carry out passivation and coating processing on two opposite cutting surfaces of the solar cell at the same time. The structure is simple and reasonable, greatly improving the production efficiency, and can be easily assembled and taken and placed automatically, which is beneficial to improving the coating quality and reducing overcoating.

[0018] 2. After the battery cells are loaded into the box body, pressing is performed through the top plate, which can improve the stability during processing, thereby improving the processing efficiency and avoiding the problem of bypass plating.

[0019] 3. Any one or more of the left side plate and the right side plate are movable, and the distance between the left side plate and the right side plate can be adjusted, facilitating the placement of the battery cells in the placement cavity and fixing them in the placement cavity.

[0020] 4. The movable plate is separable from the bottom plate. The top of the movable plate is suitable for stacking battery cells, facilitating the loading of the battery cells onto the movable plate through an automated assembly tool such as a manipulator, and then putting the movable plate into the cassette through an automated assembly tool such as a manipulator, making the automated assembly more convenient.

[0021] 5. The left and right ends of the battery cells are suitable for being abutted and fixed in the fixing grooves, which can effectively prevent the movement and collision of the battery cells during the coating process and reduce the risk of surface damage.

[0022] 6. The fixing structure includes several columns. The front and rear ends of the top plate are respectively provided with several card slots, and the columns are suitable for being clamped and fixed in the card slots and abutting against the front and rear ends of the battery cells.

[0023] 7. The positioning component facilitates the rotation of the cassette through an automated tool in the sidewall passivation equipment and also facilitates the precise positioning of the cassette by other processing components, contributing to the automated picking and placing and positioning. Description of the Drawings

[0024] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present utility model in a clear and understandable manner in combination with the drawings and preferred embodiments.

[0025] Figure 1 is the top view of the cassette;

[0026] Figure 2 is the left view of the cassette;

[0027] Figure 3 is the front view of the cassette in another embodiment;

[0028] Figure 4 is the top view of the cassette in another embodiment.

[0029] Explanation of the Reference Numerals in the Drawings:

[0030] Cassette body 1, processing window 10, placement cavity 101, left side plate 11, right side plate 12, bottom plate 13, top plate 14, movable plate 15, first positioning member 17, second positioning member 18, third positioning member 19. Fixing structure 2, fixing groove 21, column 22, card slot 23, battery cell 3, cutting surface 30. Detailed implementation manners

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will describe the specific implementation manners of the present invention with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other implementation manners can also be obtained.

[0032] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. Additionally, to make the drawings concise and easy to understand, in some drawings, for components with the same structure or function, only one of them is schematically shown, or only one of them is labeled. In this document, "one" not only means "only this one", but also can mean "more than one" situation.

[0033] It should also be further understood that the term "and / or" used in the specification and appended claims of this application refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0034] In this document, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0035] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. It should be noted that the above embodiments can be freely combined according to needs. The above are only the preferred implementation manners of the present invention. It should be pointed out that for those of ordinary skill in the technical field, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

[0036] Reference Figure 1 and Figure 3, the present utility model provides a cassette for placing photovoltaic cells, which includes a cassette body 1 and a fixing structure 2. A placing cavity 101 is provided inside the cassette body 1. The cassette body 1 has a pair of processing windows 10, and the pair of processing windows 10 are respectively located on the opposite sides of the placing cavity 101. The placing cavity 101 is adapted to place a cell 3 having two opposite cutting surfaces 30, and the pair of processing windows 10 are adapted to expose the two cutting surfaces 30 of the cell 3; the fixing structure 2 is adapted to fix the cell 3 in the placing cavity 101.

[0037] In this embodiment, the cassette of the present application can effectively perform passivation and coating processing on the two opposite cutting surfaces 30 of the cell 3 at the same time. The structure is simple and reasonable, greatly improving the production efficiency, and can be easily assembled and taken and placed automatically, which is beneficial to improving the coating quality and reducing the problem of overcoating.

[0038] Specifically, the cassette of the present application is designed specifically for the cell 3 having two opposite cutting surfaces 30, and is designed specifically for the middle piece of the one-third cell 3. The passivation and coating of the two opposite cutting surfaces 30 of the cell 3 are carried out simultaneously to ensure the uniform passivation and coating quality of each cell 3, reduce the surface recombination loss, and improve the photoelectric conversion efficiency. The pair of processing windows 10 are respectively located on the front and back of the cassette body 1. The cassette body 1 includes a left side plate 11, a right side plate 12, a bottom plate 13 and a top plate 14. The left side plate 11 and the right side plate 12 are oppositely arranged at both ends of the bottom plate 13, and the top plate 14 is arranged on the tops of the left side plate 11 and the right side plate 12. The cell 3 is horizontally arranged in the placing cavity 101.

[0039] It should be noted that the pair of processing windows 10 can also be located on other opposite side walls of the cassette body 1, and the present application will not elaborate further on this.

[0040] Furthermore, the top plate 14 is detachably installed on the tops of the left side plate 11 and the right side plate 12 and presses the cell 3 in the placing cavity 101.

[0041] In this embodiment, after the cell 3 is loaded into the cassette body 1, it is pressed tightly by the top plate 14, which can improve the stability during processing, thereby improving the processing efficiency and avoiding the problem of overcoating.

[0042] Specifically, the size of the top plate 14 is equivalent to the cross-section of the placement cavity 101. The top plate 14 is adapted to press the battery cell 3 in the placement cavity 101. In this embodiment, the top plate 14 is adapted to enter the placement cavity 101. In a modified embodiment, the top plate 14 may also be larger than the cross-section of the placement cavity 101, such that the top plate 14 cannot enter the placement cavity 101 and abuts against the battery cell 3. It should be noted that the top of the left side plate 11 and the right side plate 12 is provided with, including but not limited to, the top plate 14, and other pressing components may also be provided to press the battery cell 3, such as a pressing block, etc. At the same time, the top plate 14 can also be slidably arranged in the placement cavity 101, that is, a sliding groove is provided on the adjacent side of the left side plate 11 and the right side plate 12, and the top plate 14 is slidably installed in the sliding groove. The movement process of the top plate 14 in this application is not further limited as long as it can press the battery cell 3.

[0043] In a modified embodiment, the left side plate 11 and / or the right side plate 12 may be movably arranged on the top of the bottom plate 13, and the top plate 14 is connected to the left side plate 11 or the right side plate 12, such that the distance between the left side plate 11 and the right side plate 12 can be adjusted.

[0044] In this embodiment, any one or more of the left side plate 11 and the right side plate 12 can be moved, and the distance between the left side plate 11 and the right side plate 12 can be adjusted, facilitating the placement of the battery cell 3 in the placement cavity 101 and fixing it in the placement cavity 101.

[0045] Specifically, at this time, the top plate 14 is fixedly arranged on the top of the left side plate 11, the right side plate 12 is movably arranged on the bottom plate 13, and the right side plate 12 moves away from the left side plate 11 to open the placement cavity 101. At this time, it is suitable to place the battery cell 3 in the placement cavity 101, and then move the right side plate 12 in the reverse direction to fix the battery cell 3 in the placement cavity 101. In this application, the moving direction of the right side plate 12 can be either along the left-right direction of the box body 1, or along the front-back direction of the box body 1, or even along the up-down direction of the box body 1. It should be noted that the moving structure of the left side plate 11 or the right side plate 12 is not further limited in this application, and it includes a lead screw, a sliding groove, a screw, etc. In a modified embodiment, the right side plate 12 can also be rotatably arranged on the bottom plate 13, and a rotating shaft is provided at the connection between the right side plate 12 and the bottom plate 13. The right side plate 12 flips to one side to open one side wall of the placement cavity 101 for placing the battery cell 3.

[0046] Further, referring to Figure 3 , it further includes a movable plate 15. The movable plate 15 can be detachably arranged on the top of the bottom plate 13, and the top of the movable plate 15 is suitable for stacking the battery cells 3.

[0047] In this embodiment, the movable plate 15 is separable from the bottom plate 13. The top of the movable plate 15 is suitable for stacking the battery wafers 3, which facilitates loading the battery wafers 3 onto the movable plate 15 by means of an automated assembly tool such as a manipulator, and then putting the movable plate 15 into the cassette by means of an automated assembly tool such as a manipulator, making the automated assembly more convenient.

[0048] Specifically, the movable plate 15 is separably arranged on the upper surface of the bottom plate 13 and is used for loading the battery wafers 3 to be passivated on the side walls. Fixed structures 2 can also be arranged on both sides of the movable plate 15 to fix the battery wafers 3. First, the battery wafers 3 are cut. After a manipulator sucks and picks up the cut battery wafers 3 one by one and places them on the movable plate 15, after all 1000 battery wafers 3 have fallen on the movable plate 15, the movable plate 15 is put on the bottom plate 13 of the cassette by the manipulator, the top plate is covered, and finally the cassette is put into the subsequent side-wall passivation equipment by the manipulator. The cassette structure is simple and reasonable, making the automated assembly more convenient, the subsequent coating easier, and also improving the coating effect and avoiding overcoating, greatly enhancing the passivation efficiency of the middle piece of the three-piece cut.

[0049] Further, referring to Figure 1 , the fixed structure 2 includes a pair of fixing grooves 21, and the pair of fixing grooves 21 are respectively arranged on the opposite sides of the left side plate 11 and the right side plate 12. The left and right ends of the battery wafer 3 are suitable for being clamped in the fixing grooves 21.

[0050] In this embodiment, the left and right ends of the battery wafer 3 are suitable for being abutted and fixed in the fixing grooves 21, which can effectively prevent the movement and collision of the battery wafer 3 during the coating process and reduce the risk of surface damage.

[0051] Specifically, the left side plate 11 and the right side plate 12 of the cassette are oppositely arranged on the side surface of the bottom plate 13. The opposite sides of the left side plate 11 and the right side plate 12 form fixing grooves 21 for placing the battery wafers 3. The battery wafers 3 are horizontally placed in the fixing grooves 21, and the two cut surfaces 30 of the battery wafers 3 are exposed from the openings of the fixing grooves 21, thus facilitating the subsequent passivation of the cut surfaces 30 of the battery wafers 3.

[0052] In a variant embodiment, referring to Figure 4 , the fixed structure 2 includes a plurality of columns 22, and a plurality of card slots 23 are respectively arranged at the front and rear ends of the top plate 14. The columns 22 are suitable for being clamped and fixed in the card slots 23 and abutting against the front and rear ends of the battery wafer 3.

[0053] Specifically, the bottom plate 13 of the cassette is different from the box body 1 in the above embodiment in that there are two oppositely arranged card slots 23 protruding from the edges of the top plate 14 on both sides of the top plate 14. The upright posts 22 can be fixed at the card slots 23; the top ends of the upright posts 22 are connected to the card slots 23 of the top plate 14, and the bottom ends are connected to the movable plate 15. In this application, there are four upright posts 22, with two upright posts 22 as a group. The two groups of upright posts 22 are respectively arranged on the front and rear sides of the box body 1, which can effectively fix the battery wafers 3 and keep the battery wafers 3 stable during the passivation process. First, the battery wafers 3 are cut. After the manipulator sucks the cut battery wafers 3 one by one and places them on the movable plate 15, after all 2000 battery wafers 3L are placed on the movable plate 15, the manipulator places the movable plate 15 on the bottom plate 13 of the cassette and fixes it through the upright posts 22, and then the manipulator places the cassette into the subsequent sidewall passivation equipment. The structure of the cassette is simple and reasonable, making the automatic assembly more convenient and the subsequent coating easier, greatly improving the passivation efficiency of the middle piece of the three-piece cut.

[0054] Further, referring to Figure 2 and Figure 4 , it further includes a positioning component. The positioning component includes a plurality of first positioning members 17 and a plurality of second positioning members 18. The plurality of first positioning members 17 are respectively arranged on the mutually remote sides of the left side plate 11 and the right side plate 12; the plurality of second positioning members 18 are arranged on the tops of the left side plate 11 and the right side plate 12.

[0055] In this embodiment, the positioning component facilitates the rotation of the cassette in the sidewall passivation equipment through an automatic tool, and also facilitates other processing components to accurately position the cassette, which helps with the automatic picking, placing, and positioning.

[0056] Specifically, two first positioning members 17 are respectively arranged on the outer sides of the left side plate 11 and the right side plate 12, and two second positioning members 18 are arranged on the upper surfaces of the tops of the left side plate 11 and the right side plate 12. It further includes a plurality of third positioning members 19 which are arranged at intervals on the bottom of the bottom plate 13. Arranging the second positioning members 18 on the tops of the left side plate 11 and the right side plate 12 and arranging the third positioning members 19 on the bottom plate 13 facilitates feeding the cassette into the subsequent sidewall passivation device through an automated tool. Arranging the first positioning members 17 on the sidewalls of the left side plate 11 and the right side plate 12 facilitates rotating the cassette in the sidewall passivation device through an automated tool and also facilitates precise positioning of the cassette by other processing components. The processing components include but are not limited to cylinders. Therefore, arranging the first positioning members 17, the second positioning members 18 and the third positioning members 19 on the cassette helps with the automated picking and placing and positioning of the cassette. It should be noted that the specific number and arrangement of the first positioning members 17, the second positioning members 18 and the third positioning members 19 are not further limited in this application. According to actual processing requirements, the number and arrangement of the positioning components can also be appropriately adjusted. It should be noted that the positioning parts are preferably pin shafts, but are not limited thereto, and can also be other suitable positioning parts.

[0057] Further, there are two cassette bodies 1 which are arranged at intervals front and back in the coating space.

[0058] In this embodiment, the cassette of this application is specifically designed for the middle piece of the one-third battery piece 3 and can passivate the two side cut surfaces of the middle piece at the same time. Two groups of battery pieces 3 are placed in the two cassette bodies 1, which helps to simplify the production process, improve production efficiency and reduce manufacturing costs. Specifically, the two cassette bodies 1 are arranged at intervals in the coating space, which can improve the utilization rate of the coating space and reduce the coating cost.

[0059] It should be noted that the above-mentioned embodiments can be freely combined according to needs. The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A cell box for placing photovoltaic cells, characterized in that: include: A box body, wherein a placement cavity is provided in the box body, and the box body has a pair of processing windows, which are respectively located at opposite sides of the placement cavity, and the placement cavity is suitable for placing a battery cell with two opposite cutting surfaces, and the pair of processing windows are suitable for exposing the two cutting surfaces of the battery cell; A fixing structure, wherein the fixing structure is suitable for fixing the battery sheet in the placement cavity.

2. A cell box for placing photovoltaic cells according to claim 1, characterized in that: A pair of processing windows are respectively located on the front and back of the box body, and the box body includes a left side plate, a right side plate, a bottom plate and a top plate. The left side plate and the right side plate are relatively arranged at two ends of the bottom plate, and the top plate is arranged on the top of the left side plate and the right side plate. The battery cell is horizontally arranged in the placement cavity.

3. A cell box for placing photovoltaic cells according to claim 2, characterized in that: The top plate is detachably mounted on the top of the left side plate and the right side plate and presses the battery sheet into the placement cavity.

4. A cell box for placing photovoltaic cells according to claim 2, characterized in that: The left side plate and / or the right side plate are movably arranged on the top of the bottom plate, and the top plate is connected to the left side plate or the right side plate, so that the distance between the left side plate and the right side plate can be adjusted.

5. A cell box for placing photovoltaic cells according to claim 2, characterized in that: It also includes a movable plate, which can be detachably arranged on the top of the bottom plate, and the top of the movable plate is suitable for stacking the battery sheets.

6. A cell box for placing photovoltaic cells according to any one of claims 2 to 5, characterized in that: The fixing structure comprises a pair of fixing grooves, which are respectively arranged on opposite sides of the left plate and the right plate, and the fixing grooves are suitable for clamping the left and right ends of the battery sheet.

7. A cell box for placing photovoltaic cells according to any one of claims 2 to 5, characterized in that: The fixing structure includes a plurality of columns. The front and rear ends of the top plate are respectively provided with a plurality of slots. The columns are suitable for being fixed in the slots and abutting against the front and rear ends of the battery sheet.

8. A cell box for placing photovoltaic cells according to claim 2, characterized in that: It also includes a positioning component, which includes a plurality of first positioning members and a plurality of second positioning members, wherein the plurality of first positioning members are respectively arranged on the side of the left plate and the right plate away from each other; and the plurality of second positioning members are arranged on the top of the left plate and the right plate.

9. A cell box for placing photovoltaic cells according to claim 7, characterized in that: It also includes a plurality of third positioning members, which are arranged at intervals at the bottom of the base plate.

10. A cell box for placing photovoltaic cells according to claim 1, characterized in that: There are two box bodies, and the two box bodies are arranged in the coating space at a front-back interval.

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