Wafer box for passivation equipment

Abstract

The utility model relates to the field of solar cells, and provides a wafer box for passivation equipment. The wafer box comprises a base, a box body and an inclined structure; the base is mounted on the tray; two adjacent side surfaces of the box body are provided with processing windows, the interior of the box body is suitable for placing a battery panel, and the two processing windows are suitable for exposing a cutting surface of a battery piece; the box body is installed on the base through the inclined structure, and the inclined angle of the box body can be adjusted through the inclined structure, so that the two machining windows of the box body are suitable for being matched with the spraying device. The coating film repairing equipment comprises a film box. The two adjacent cutting surfaces of the battery piece are exposed through the two adjacent processing windows of the piece box, so that the two cutting surfaces of the battery piece can be efficiently coated at the same time, and the coating efficiency of the battery piece is improved; the inclination angle of the box body can be adjusted through the inclination structure, so that the two air outlet faces of the spraying plate are matched with the two machining windows of the box body correspondingly, the uniformity of adjacent cutting surface film layers of the battery piece is improved, and good adaptability is achieved.

Description

Technical Field

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

[0002] In order to improve the overall performance and economic benefits of the photovoltaic system, the cutting process of the battery wafers has been continuously optimized. Among them, the quarter-cut battery wafers, as a new design, reduce the internal resistance and improve the current collection efficiency by reducing the unit size, and facilitate modular installation. However, this more refined cutting method also brings new technical challenges, especially in the passivation and coating processes of the two cutting surfaces of the quarter battery wafers, which require more refined processing techniques and equipment.

[0003] Currently, the coating repair of the cutting surface of the battery wafers is generally carried out by stacking the battery wafers in a cassette, and a thin film is deposited on the cutting surface exposed outside the cassette through the saturation of the gas. Currently, the commonly used is a single-sided processing window cassette, but there is more than one cutting surface for the quarter battery wafers, which results in the need to coat the same batch of battery wafers twice, with low coating efficiency and unable to meet the needs of high-efficiency production. Moreover, separate coating of the two cutting surfaces of the battery wafers is also prone to problems such as uneven coating and serious overcoating. Summary of the Utility Model

[0004] Aiming at the above technical problems, the purpose of the utility model is to provide a cassette for a passivation device. The two adjacent cutting surfaces of the battery wafers are exposed through two adjacent processing windows of the cassette, which can efficiently coat the two cutting surfaces of the battery wafers simultaneously, improve the coating efficiency of the battery wafers, and meet the requirements of high-efficiency production; the inclined structure can adjust the inclination angle of the cassette body, so that the two air outlet surfaces of the spray plate are respectively adapted to the two processing windows of the cassette body, improve the uniformity of the film layer on the adjacent cutting surfaces of the battery wafers, have good adaptability, can easily adapt to various sidewall passivation devices, and support automated assembly to meet the needs of modern photovoltaic production lines.

[0005] To achieve the above purpose, the utility model provides a cassette for a passivation device, including a base, a cassette body and an inclined structure, and the base is suitable for being installed on a tray;

[0006] The cassette body is provided with processing windows on two adjacent side surfaces, the interior of the cassette body is suitable for placing battery wafers with two adjacent cutting surfaces, and the two adjacent processing windows are respectively suitable for exposing the two adjacent cutting surfaces;

[0007] The cassette body is installed on the base through the inclined structure, and the inclined structure can adjust the inclination angle of the cassette body, so that the two processing windows of the cassette body are suitable for being adapted to a spraying device.

[0008] In some embodiments, the cassette includes a front plate, a rear plate, a bottom plate, and side plates, and the two processing windows are respectively disposed on opposite sides of the bottom plate and the side plates;

[0009] The inclined structure connects the bottom plate, the side plates, and the base.

[0010] In some embodiments, the inclined structure includes two telescopic members and a fixing member arranged at intervals. One telescopic member connects the base and the bottom plate, and the other telescopic member connects the side plate and the base. The two telescopic members adjust the inclination angle of the cassette by adjusting their own lengths, and the fixing member is adapted to fixedly connect the telescopic members and the bottom plate and the side plates of the cassette.

[0011] In some embodiments, the two telescopic members have equal lengths, and the two telescopic members are respectively connected to the center of the bottom plate and the center of the side plate, so that the cassette forms a V shape, and the two processing windows of the cassette are symmetrically arranged along the central axis of the base.

[0012] In some embodiments, the inclined structure includes a rotating shaft and a lifting member. The rotating shaft connects one end of the bottom plate and the base, and the other end of the bottom plate is connected to the base through the lifting member, and the lifting member can drive the bottom plate to rotate around the rotating shaft.

[0013] In some embodiments, the front plate is movable along the length direction of the cassette for pressing the battery cell between the front plate and the rear plate.

[0014] In some embodiments, a chute is further provided in the side plate and / or the bottom plate, and a slider is further provided on the end face of the front plate, and the slider is slidably installed in the chute.

[0015] In some embodiments, an elastic member and a baffle are further included. The baffle is disposed at one end of the cassette where the front plate is provided, and the elastic member connects the baffle and the front plate, and the elastic member drives the front plate to approach the rear plate.

[0016] In some embodiments, a blocking member is further included. The blocking member is installed at the connection of the two processing windows and is adapted to abut against a cutting surface of the battery cell;

[0017] Or, a positioning member is further included. The positioning member is disposed on the base for fixedly installing the base on the tray.

[0018] Compared with the prior art, the cassette for a passivation device provided by the present utility model has at least one of the following beneficial effects:

[0019] 1. Two adjacent cutting surfaces of the cell are exposed through two adjacent processing windows of the cassette, enabling efficient coating of the two cutting surfaces of the cell simultaneously, improving the coating efficiency of the cell, and meeting the requirements of high-efficiency production. The inclined structure can adjust the inclination angle of the cassette body, making the two air outlet surfaces of the spray plate respectively adapt to the two processing windows of the cassette body, improving the uniformity of the film layers on the adjacent cutting surfaces of the cell, having good adaptability, being able to easily adapt to various sidewall passivation devices, and supporting automated assembly to meet the requirements of modern photovoltaic production lines.

[0020] 2. The cassette body is in a V shape, and the two processing windows of the cassette body are symmetrically arranged along the central axis of the base, making the two processing windows match the same air outlet surface of the spraying device, increasing the adaptability between the spraying device and the cassette, and improving the coating efficiency and coating uniformity of the cell.

[0021] 3. The front plate is movable along the length direction of the cassette body to press the cell between the front plate and the rear plate, preventing the cell from moving and colliding during the coating process, and improving the yield of the cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above characteristics, technical features, advantages and their implementation manners of the present utility model will be further described below in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0023] Figure 1 is an overall view of a cassette for a passivation device;

[0024] Figure 2 is a side view of a cassette for a passivation device.

[0025] REFERENCE NUMERALS IN THE DRAWINGS:

[0026] Base 1, cassette body 2, processing window 20, front plate 21, rear plate 22, bottom plate 23, side plate 24, inclined structure 3, telescopic member 31, baffle 32, cell 4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, and other embodiments can also be obtained.

[0028] To simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, to simplify the drawings for easy understanding, in some figures, only one of the components with the same structure or function is schematically shown, or only one of them is labeled. In this article, "one" not only means "only this one", but also can mean "more than one" situation.

[0029] It should also be further understood that the term "and / or" used in the description of this application and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0030] In this article, 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 this utility model can be understood according to specific circumstances.

[0031] 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 as needed. The above are only the preferred embodiments of this utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of this utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of this utility model.

[0032] Referring to Figure 1 and Figure 2 , the present utility model provides a cassette for a passivation device, including a base 1, a cassette body 2, and an inclined structure 3. The base 1 is adapted to be installed on a tray; the cassette body 2 is provided with processing windows 20 on two adjacent sides, and the interior of the cassette body 2 is adapted to place a battery cell 4 having two adjacent cutting surfaces. The two adjacent processing windows 20 are respectively adapted to expose the two adjacent cutting surfaces; the cassette body 2 is installed on the base 1 through the inclined structure 3, and the inclined structure 3 can adjust the inclination angle of the cassette body 2 so that the two processing windows 20 of the cassette body 2 are adapted to be matched with a spraying device.

[0033] In this embodiment, two adjacent cutting surfaces of the battery cell are exposed through two adjacent processing windows 20 of the cassette, enabling efficient coating of the two cutting surfaces of the battery cell simultaneously, improving the coating efficiency of the battery cell, and meeting the requirements of high-efficiency production; the inclined structure 3 can adjust the inclination angle of the cassette body 2, so that the two air outlet surfaces of the spray plate are respectively adapted to the two processing windows 20 of the cassette body 2, improving the uniformity of the film layers on the adjacent cutting surfaces of the battery cell, having good adaptability, being able to easily adapt to various sidewall passivation devices, and supporting automated assembly to meet the requirements of modern photovoltaic production lines.

[0034] Specifically, the quarter cell is obtained by cross - cutting. The cell has two adjacent cutting surfaces. The cassette also has processing windows 20 on two adjacent sides. These processing windows 20 match the cutting surfaces of the cell, and the two cutting surfaces of the cell are respectively exposed through the processing windows 20 of the two cassettes 2 so as to perform coating simultaneously in the reaction chamber. The cassette 2 includes a front plate 21, a rear plate 22, a bottom plate 23 and side plates 24. The two processing windows 20 are respectively arranged on the opposite sides of the bottom plate 23 and the side plate 24. The inclined structure 3 connects the bottom plate 23, the side plate 24 and the base 1. In one embodiment, the inclined structure 3 includes two telescopic members 31 and a fixing member arranged at intervals. One telescopic member 31 connects the base 1 and the bottom plate 23, and the other telescopic member 31 connects the side plate 24 and the base 1. The two telescopic members 31 adjust the inclination angle of the cassette 2 by adjusting their own lengths. The fixing member is suitable for fixedly connecting the telescopic members 31 and the bottom plate 23 and the side plate 24 of the cassette 2. The telescopic member 31 includes but is not limited to elongation structures such as telescopic rods, lead screws, etc. Even the telescopic member 31 can be a support rod, and different angles of inclination of the cassette 2 can be achieved by replacing support rods of different lengths. The fixing member includes but is not limited to fastening structures such as clips, screws, etc., and no further limitation is made here in this application. It should be noted that the passivation equipment includes a spraying device and a tray. The cassette 2 is installed on the tray, the tray is placed in the reaction chamber, the spraying device is arranged above the tray, and the air outlet surface of the spraying device matches the processing window 20 of the cassette 2. When coating the cell, the base 1 is fixedly installed on the tray in the reaction chamber, the spraying plate is horizontally arranged above the cassette, and an air outlet surface is provided at both ends of the central axis of the base 1. When the inclined structure 3 inclines the cassette 2 so that the diagonal of the cassette 2 is arranged along the central axis of the tray, that is, the two processing windows 20 of the cassette 2 respectively correspond to the two air outlet surfaces of the spraying plate, the uniformity of the two cutting surfaces of the cell is controlled by controlling the two air outlet surfaces of the spraying plate. Of course, the spraying plate can also be used in combination with several spray pipes to form a spraying device. The several spray pipes are vertically arranged at the bottom of the spraying plate and the several spray pipes are arranged at intervals. The cassette 2 is relatively located between adjacent spray pipes. The spraying device is in any one of the shapes of C, T, E, and F. When the cassette 2 is placed horizontally, the two air outlet surfaces of the spraying plate match the processing window 20 at the top of the cassette 2, and the air outlet surface of the spray pipe matches the processing window 20 on the side of the cassette 2. The spraying plate and the spray pipe respectively coat the two cutting surfaces of the cell.

[0035] Preferably, the two telescopic members 31 have equal lengths, and the two telescopic members 31 are respectively connected to the centers of the bottom plate 23 and the side plate 24, so that the cassette 2 is in a V - shape, and the two processing windows 20 of the cassette 2 are symmetrically arranged along the central axis of the base 1.

[0036] In this embodiment, the cartridge 2 is in a V shape, and the two processing windows 20 of the cartridge 2 are symmetrically arranged along the central axis of the base 1, so that the two processing windows 20 match the same air outlet surface of the spraying device, increasing the adaptability between the spraying device and the cassette, and improving the coating efficiency and coating uniformity of the battery cells.

[0037] Specifically, the spraying device includes a spraying plate which is horizontally arranged. Tilting the cartridge 2 into a V shape can make the two processing windows 20 of the cartridge 2 match the two air outlet surfaces on the spraying plate, that is, the two air outlet surfaces on the spraying plate simultaneously form a coating at the two processing windows 20 of the battery cell, greatly increasing the uniformity of the two cutting surfaces of the battery cell. The air output of the two air outlet surfaces of the spraying plate is the same. It should be noted that in this embodiment, the two air outlet surfaces of the spraying plate coat the two cutting surfaces of the battery cell. When the battery cell 1 is not square, the air output on both sides of the diagonal of the cassette needs to be adjusted through the spray pipe to make the two cutting surfaces 10 evenly coated, that is, to control the same air output of the two air outlet surfaces of the spraying plate, and the air outlet surface of the spray pipe supplements the air outlet surface of one side of the spraying plate. In this embodiment, the spraying plate and the spray pipe can also be used in combination, that is, the air outlet surface of the spraying plate and the air outlet surface of the spray pipe together coat one processing window 20 of the inclined cassette 2. The spray pipe plays a role in supplementing and strengthening the coating of the inclined and need-to-be-strengthened cutting surface 10, improving the overall coating rate. At this time, each processing window 20 of the cassette 2 matches multiple air outlet surfaces of the spraying device.

[0038] In a variant embodiment, one air outlet surface of the spraying plate and one air outlet surface of the spray pipe can also simultaneously coat one processing window 20 of the battery cell. Since the two processing windows 20 of the cartridge 2 are symmetrically arranged along the central axis of the base 1, the uniformity of the two cutting surfaces can also be well maintained. In this application, the battery cell is a quarter battery cell and is square. If the battery cell is rectangular, tilting the cartridge 2 can make the diagonal of the battery cell vertically arranged. Then, the air output on both sides of the diagonal of the cassette needs to be adjusted through the spray pipe to make the two cutting surfaces evenly coated, that is, to control the same air output of the two air outlet surfaces of the spraying plate, and the air outlet surface of the spray pipe supplements the air outlet surface of one side of the spraying plate. In this embodiment, the spraying plate and the spray pipe are used in combination, that is, the air outlet surface of the spraying plate and the air outlet surface of the spray pipe together coat one processing window of the inclined cassette. The spray pipe plays a role in supplementing and strengthening the coating of the inclined and need-to-be-strengthened cutting surface, improving the overall coating rate. At this time, each processing window of the cassette matches multiple air outlet surfaces of the spraying device.

[0039] In a variant embodiment, the inclined structure 3 includes a rotating shaft and a lifting member. The rotating shaft connects one end of the bottom plate 23 and the base 1, and the other end of the bottom plate 23 is connected to the base 1 through the lifting member. The lifting member can drive the bottom plate 23 to rotate around the rotating shaft.

[0040] Further, the front plate 21 is movable along the length direction of the cassette 2 and is used to press the solar cell between the front plate 21 and the rear plate 22.

[0041] In this embodiment, the front plate 21 is movable along the length direction of the cassette 2 to press the solar cell between the front plate 21 and the rear plate 22, preventing the solar cell 4 from moving and colliding during the coating process and improving the yield rate of the solar cell.

[0042] Specifically, it further includes an elastic member and a baffle 32. The baffle 32 is arranged at one end of the cassette 2 where the front plate 21 is provided. The elastic member connects the baffle and the front plate 21, and the elastic member drives the front plate 21 to approach the rear plate 22. Especially when the number of solar cells is insufficient, the elastic member drives the front plate 21 to approach the rear plate 22 to press the solar cell, improving the usage scenario of the cassette 2. It should be noted that a chute is also provided in the side plate 24 and / or the bottom plate 23, and a slider is also provided on the end face of the front plate 21. The slider is slidably installed in the chute, enabling the front plate 21 to slide in the chute. Moreover, the chute can also be a special-shaped chute such as a dovetail groove with a binding force to prevent the front plate 21 from falling during the rotation of the tray.

[0043] Further, it further includes a blocking member. The blocking member is installed at the connection of the two processing windows 20 and is adapted to abut against any cutting surface of the solar cell. In this embodiment, the blocking member is adapted to and abuts against the cutting surface of the solar cell, used to prevent the solar cell inside the cassette 2 from falling out when the tray rotates, increasing the safety performance of the cassette. Specifically, the blocking member is arranged on the processing window 20 on the side of the cassette 2 away from the central axis of the tray, used to prevent one end of the solar cell from tilting up when the tray rotates. The blocking member includes but is not limited to a strip, a rib, etc., used to reduce the covering area of the blocking member on the cutting surface of the solar cell and ensure the coating effect of the cutting surface.

[0044] Further, it further includes a positioning member. The positioning member is arranged on the base 1 and is used to fixedly install the base 1 on the tray.

[0045] In this embodiment, multiple positioning members are provided on the base 1 of the cassette. The positioning member includes but is not limited to a pin shaft and can also be a fastener such as a bolt.

[0046] Further, the present application provides a coating repair device, including the cassette, a spraying device, and a tray in any one of the above preferred embodiments. The cassette is installed on the tray, the tray is placed in the reaction chamber, the spraying device is arranged above the tray, and the gas outlet surface of the spraying device matches the processing window 20 of the cassette 2.

[0047] It should be noted that the above embodiments can be freely combined as needed. 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 refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A cassette for a passivation device, characterized in that, Comprising: A base, the base being adapted to be mounted on a tray; A box body, the box body being provided with processing windows on two adjacent sides, the interior of the box body being adapted to place a battery cell having two adjacent cutting surfaces, and the two adjacent processing windows being respectively adapted to expose the two adjacent cutting surfaces; An inclined structure, the box body being mounted on the base through the inclined structure, and the inclined structure being capable of adjusting the inclination angle of the box body so that the two processing windows of the box body are adapted to be matched with a spraying device.

2. The wafer cassette for a passivation device according to claim 1, wherein The box body includes a front plate, a rear plate, a bottom plate and side plates, and the two processing windows are respectively arranged on opposite sides of the bottom plate and the side plates; The inclined structure connects the bottom plate, the side plates and the base.

3. The wafer cassette for a passivation device according to claim 2, wherein The inclined structure includes two spaced telescopic members and a fixing member. One telescopic member connects the base and the bottom plate, and the other telescopic member connects the side plate and the base. The two telescopic members adjust the inclination angle of the box body by adjusting their own lengths, and the fixing member is adapted to fixedly connect the telescopic members and the bottom plate and the side plates of the box body.

4. The wafer cassette for a passivation device according to claim 3, wherein The two telescopic members have equal lengths, and the two telescopic members are respectively connected to the centers of the bottom plate and the side plate, so that the box body forms a V shape, and the two processing windows of the box body are symmetrically arranged along the central axis of the base.

5. The wafer cassette for a passivation device according to claim 2, wherein The inclined structure includes a rotating shaft and a lifting member. The rotating shaft connects one end of the bottom plate and the base, and the other end of the bottom plate is connected to the base through the lifting member, and the lifting member can drive the bottom plate to rotate around the rotating shaft.

6. The wafer cassette for a passivation device according to claim 2, wherein The front plate is movable along the length direction of the box body for pressing the battery cell between the front plate and the rear plate.

7. The wafer cassette for a passivation device according to claim 6, wherein A chute is further provided in the side plate and / or the bottom plate, and a slider is further provided on the end face of the front plate, and the slider is slidably mounted in the chute.

8. The wafer cassette for a passivation device according to claim 6, wherein It further includes an elastic member and a baffle. The baffle is arranged at one end of the box body where the front plate is provided, and the elastic member connects the baffle and the front plate, and the elastic member drives the front plate to approach the rear plate.

9. The wafer cassette for a passivation device according to claim 1, wherein It further includes a blocking member, and the blocking member is mounted at the connection of the two processing windows and is adapted to abut against one cutting surface of the battery cell; Or, it further includes a positioning member, and the positioning member is arranged on the base for fixedly mounting the base on the tray.

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