Photovoltaic cell film coating carrier boat

Abstract

The utility model discloses a photovoltaic cell film coating carrier boat. Comprising a bottom plate, side plates, limiting plates, sealing plates and elastic fixing mechanisms. Side plates are symmetrically arranged on the bottom plate, limiting plates are arranged at the top ends of the side plates, the two ends of each limiting plate are in lap joint with the corresponding side plates, the bottom plate, the side plates and the limiting plates define a boat carrying cavity with the front, back, left and right closed, the bottom of the boat carrying cavity is covered with a sealing plate, the sealing plate is connected with the bottom plate and the side plates, and an elastic fixing mechanism is arranged in the boat carrying cavity; the elastic fixing mechanism comprises an upper pressing plate, a lower base plate, a high-temperature compression spring and a hexagon socket cap shoulder screw, the lower base plate is arranged on the bottom plate, the upper pressing plate and the lower base plate are oppositely arranged, the upper pressing plate is connected with the limiting plate through the hexagon socket cap shoulder screw, the hexagon socket cap shoulder screw is sleeved with the high-temperature compression spring, and the high-temperature compression spring is connected with the limiting plate through the high-temperature compression spring. The two ends of the high-temperature compression spring abut against the position between the limiting plate and the upper pressing plate, the upper pressing plate is arranged in the boat carrying cavity in a floating mode, and an elastic station is formed between the upper pressing plate and the lower base plate. According to the utility model, cracks caused by overlarge stress on the edge of the silicon wafer are avoided, and the quality of the battery piece is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to photovoltaic cell production technical field, especially relates to a kind of photovoltaic cell piece coating boat. BACKGROUND

[0002] The cell piece in solar cell is made of silicon wafer, to reduce the reflection of cell piece to light, in the cell piece production process, need to be plated on the surface of silicon wafer, form plating layer on the surface of silicon wafer, effectively reduce reflection.

[0003] To ensure the plating effect and efficiency of cell piece, in the cell piece plating process, silicon wafer is usually contained and fixed in boat, then the boat is placed in plating equipment to be plated.In actual production, due to the high temperature in plating equipment, the size of silicon wafer will change after being heated, since the size of the station for placing silicon wafer in boat is fixed, the force of the edge of silicon wafer and the contact part of station increases, leading to the emergence of small crack in the edge of silicon wafer, which affects the quality of cell piece.Therefore, it is a problem to be solved to design a boat that can change the station elastically according to the size change of silicon wafer after being heated.

[0004] The information disclosed in this section is intended only to add an understanding of the general background to the present application, and should not be considered as admitting or implying in any form that the information constitutes prior art known to those skilled in the art. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of photovoltaic cell piece coating boat, to overcome the defects in the prior art described above.

[0006] To achieve the above object, the utility model provides a kind of photovoltaic cell piece coating boat, including bottom plate, side plate, limit board, sealing plate, elastic fixing mechanism;The bottom plate is symmetrically provided with side plate, the side plate top end is provided with limit board, and the limit board two ends are respectively overlapped with corresponding side plate, and the bottom plate, side plate and limit board enclose the front and back and left and right closed boat cavity, and the boat cavity bottom is covered with sealing plate, and the sealing plate is connected with bottom plate, side plate respectively, and the boat cavity is provided with elastic fixing mechanism;The elastic fixing mechanism includes upper pressing plate, lower pad, high-temperature compression spring, internal hexagonal cylindrical head shoulder screw, lower pad is arranged on bottom plate, upper pressing plate is oppositely arranged with lower pad, upper pressing plate is connected with limit board by internal hexagonal cylindrical head shoulder screw, high-temperature compression spring is sleeved on internal hexagonal cylindrical head shoulder screw, and high-temperature compression spring two ends are placed between limit board and upper pressing plate, upper pressing plate is floatingly arranged in boat cavity, and elastic station is formed between upper pressing plate and lower pad, and silicon wafer is fixed in elastic station;Upper pressing plate is floatingly displaced according to the size of silicon wafer after being heated and expanded.

[0007] Preferably, in the technical scheme, the top surface of the upper pressing plate and the bottom surface of the limiting plate are provided with corresponding annular grooves, and the high-temperature compression spring is arranged on the annular grooves between the limiting plate and the upper pressing plate.

[0008] Preferably, in the technical scheme, the side plate is provided with a scale, and the scale position corresponds to the position of the upper pressing plate, so that the floating displacement value of the upper pressing plate can be conveniently recorded.

[0009] Preferably, in the technical scheme, the side plate is provided with a claw mechanism, the claw mechanism comprises a fixed plate and a claw, the fixed plate is arranged on the side plate, the claw is arranged on the fixed plate, the fixed plate protrudes from the top surface of the limiting plate, the claw extends above the top surface of the limiting plate, the claw is arranged towards the limiting plate, and a gap between the claw and the top surface of the limiting plate forms a clamping groove, the size of the clamping groove is matched with the boat holder fixing structure of the placed boat, and the boat is fixed on the boat holder through the claw mechanism.

[0010] Preferably, in the technical scheme, the side plate is provided with a claw mechanism, the claw mechanism comprises a fixed plate and a claw, the fixed plate is arranged on the side plate, the claw is arranged on the fixed plate, the fixed plate protrudes from the top surface of the limiting plate, the claw extends above the top surface of the limiting plate, the claw is arranged towards the limiting plate, and a gap between the claw and the top surface of the limiting plate forms a clamping groove, the size of the clamping groove is matched with the boat holder fixing structure of the placed boat, and the boat is fixed on the boat holder through the claw mechanism.

[0011] Compared with the prior art, the photovoltaic cell piece coating boat structure has the following beneficial effects:

[0012] The elastic fixing mechanism forms an elastic station which can be floatingly changed, corresponding displacement is made according to the size of the silicon wafer after thermal expansion, cracks caused by excessive force on the edge of the silicon wafer and the contact position of the elastic station are avoided, and the quality of the battery piece is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a photovoltaic cell piece coating boat structure schematic view of the utility model;

[0014] Fig. 2 It is a limiting plate structure schematic view of the utility model;

[0015] Fig. 3 It is an upper pressing plate structure schematic view of the utility model. DETAILED DESCRIPTION

[0016] The specific embodiments of the utility model are described in detail below, but it should be understood that the protection scope of the utility model is not limited by the specific embodiments.

[0017] Unless otherwise explicitly indicated, in the entire specification and claims, the term "comprises" or its variants such as "contains" or "includes" and the like will be understood to include the stated element or component, but not exclude other elements or components.

[0018] As Figs. 1-3As shown, a photovoltaic cell piece coating film carrier includes a bottom plate 1, a side plate 2, a limiting plate 3, a sealing plate 4, and an elastic fixing mechanism 5. The bottom plate 1 is symmetrically provided with the side plate 2. The top end of the side plate 2 is provided with the limiting plate 3. The limiting plate 3 is respectively overlapped with the corresponding side plate 2 at both ends. The bottom plate 1, the side plate 2, and the limiting plate 3 enclose a front-to-back and left-to-right closed carrier cavity. The carrier cavity bottom is covered with the sealing plate 4. The sealing plate 4 is respectively connected with the bottom plate 1 and the side plate 2. The carrier cavity is provided with the elastic fixing mechanism 5. The elastic fixing mechanism 5 includes an upper pressing plate 50, a lower pad plate 51, a high-temperature compression spring 52, and an internal hexagonal cylindrical head shoulder screw 53. The lower pad plate 51 is arranged on the bottom plate 1. The upper pressing plate 50 is oppositely arranged with the lower pad plate 51. The upper pressing plate 50 is connected with the limiting plate 3 through the internal hexagonal cylindrical head shoulder screw 53. The high-temperature compression spring 52 is sleeved on the internal hexagonal cylindrical head shoulder screw 53. The top surface of the upper pressing plate 50 and the bottom surface of the limiting plate 3 are provided with corresponding annular grooves 54. The high-temperature compression spring 52 is positioned at both ends between the annular grooves 54 of the limiting plate 3 and the upper pressing plate 50. The upper pressing plate 50 is floatingly arranged in the carrier cavity. An elastic station is formed between the upper pressing plate 50 and the lower pad plate 51. A silicon wafer is fixed in the elastic station. The upper pressing plate 50 is floatingly displaced according to the size of the silicon wafer after being heated and expanded.

[0019] A claw mechanism is arranged on the side plate 2. The claw mechanism includes a fixed plate 21 and a hook 22. The fixed plate 21 is arranged on the side plate 2. The hook 22 is arranged on the fixed plate 21. The fixed plate 21 protrudes from the top surface of the limiting plate 3. The hook 22 extends above the top surface of the limiting plate 3. The hook 22 is arranged towards the limiting plate 3. The gap between the hook 22 and the top surface of the limiting plate 3 forms a clamping groove. The size of the clamping groove is matched with a boat holder fixing structure for placing the carrier.

[0020] In use, the silicon wafer is placed in the elastic station. The front and rear ends of the silicon wafer are respectively abutted against the upper pressing plate 50 and the lower pad plate 51. The bottom surface of the silicon wafer is supported by the sealing plate 4. After the carrier is filled with the silicon wafers, the carrier is placed on the boat holder. The boat holder fixing structure is inserted into the clamping groove. The carrier is fixed on the boat holder. In the coating film equipment, the silicon wafer is expanded after being heated. The silicon wafer presses the upper pressing plate 50. The upper pressing plate 50 is correspondingly moved towards the limiting plate 3 after being pressed. After the silicon wafer is coated, the carrier is removed from the coating film equipment. During the cooling process, the silicon wafer is contracted. The stress on the upper pressing plate 50 is gradually reduced. The upper pressing plate 50 is gradually reset under the action of the high-temperature compression spring 52. Through the floating change of the elastic station, the force on the contact position between the edge of the silicon wafer and the elastic station is avoided to be too large to cause cracks. The quality of the cell piece is ensured.

[0021] The foregoing description of specific exemplary embodiments of the present application is intended to be illustrative only and is not intended to limit the application to the precise forms disclosed. Many modifications and variations are possible in light of the above teachings without departing from the spirit or essential characteristics of the application. The exemplary embodiments were chosen and described in order to explain the principles of the application and its practical application and to allow others skilled in the art to understand the application for various exemplary embodiments with various modifications being applicable. The scope of the application is intended to be defined by the claims and their equivalents.

Claims

1. A photovoltaic cell coating carrier boat, characterized in that: The device includes a base plate, side plates, a limiting plate, a sealing plate, and an elastic fixing mechanism. Side plates are symmetrically arranged on the base plate, and a limiting plate is positioned at the top of each side plate. The two ends of the limiting plate overlap with the corresponding side plates. The base plate, side plates, and limiting plate form a closed, front-to-back, left-to-right carrier cavity. The bottom of the carrier cavity is covered by a sealing plate, which is connected to both the base plate and the side plates. An elastic fixing mechanism is installed within the carrier cavity. This mechanism includes an upper pressure plate, a lower pad, a high-temperature compression spring, and hexagonal head screws. The lower pad is positioned on the base plate, and the upper pressure plate is positioned opposite to it. The upper pressure plate is connected to the limiting plate via hexagonal head screws. The high-temperature compression spring is fitted onto the hexagonal head screws, with both ends resting between the limiting plate and the upper pressure plate. The upper pressure plate is floating within the carrier cavity, forming an elastic work position between it and the lower pad. The silicon wafer is fixed within this elastic work position. The upper pressure plate floats and shifts according to the dimensions of the silicon wafer after thermal expansion.

2. The photovoltaic cell coating carrier according to claim 1, characterized in that: The top surface of the upper pressure plate and the bottom surface of the limiting plate are provided with corresponding annular grooves, and the two ends of the high-temperature compression spring are placed between the annular grooves of the limiting plate and the upper pressure plate.

3. The photovoltaic cell coating carrier according to claim 1, characterized in that: The side plate has graduations, and the graduation positions correspond to the positions of the upper pressure plate.

4. The photovoltaic cell coating carrier according to claim 1, characterized in that: A claw mechanism is provided on the side plate. The claw mechanism includes a fixed plate and a hook. The fixed plate is set on the side plate, and the hook is set on the fixed plate. The fixed plate protrudes from the top surface of the limiting plate, and the hook extends to the top surface of the limiting plate. The hook is set towards the limiting plate, and the gap between the hook and the top surface of the limiting plate forms a groove. The size of the groove matches the boat support fixing structure on which the boat is placed.

5. The photovoltaic cell coating carrier according to claim 1, characterized in that: A gripping block is provided on the side panel.

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