Graphite boat ceramic ring

Abstract

The utility model provides a graphite boat ceramic ring. The graphite boat ceramic ring comprises an outer ring and an inner ring, a connecting part is arranged between the outer ring and the inner ring, the outer ring, the inner ring and the connecting part are integrally formed, trapezoidal grooves are formed in the upper surface and the lower surface of the connecting part, the inclined edge angle of each trapezoidal groove is 60 degrees, and a rough sawtooth structure is arranged on the outer surface of the outer ring. According to the graphite boat ceramic ring provided by the utility model, the outer ring, the inner ring and the connecting part are integrally formed, the trapezoidal grooves are formed in the connecting part, and the sawtooth structure is arranged on the outer ring, so that the surface area of the ceramic ring can be increased, the deposition area of the surface of the ceramic ring is further increased, the conduction risk between boat pages is reduced, and the process reworking frequency is reduced; the production cost is reduced while the yield is increased.

Description

Technical Field

[0001] The utility model relates to the field of solar cell production, and particularly relates to a graphite boat ceramic ring. Background Art

[0002] A solar cell is a thin photoelectric semiconductor sheet that directly generates electricity using sunlight, also known as a "solar chip" or "photovoltaic cell". As long as it is illuminated by light with a certain illuminance condition, it can instantaneously output voltage and generate current in the case of a circuit. As one of the cleanest energy sources at present, a large number of graphite boats composed of graphite boat leaves and ceramic rings are required in its manufacturing process to form an antireflection film on the surface of silicon wafers.

[0003] The graphite boat used for depositing film layers by a tube-type PECVD device is used as a carrier. The boat leaves of the graphite boat are made of graphite material, which has good electrical conductivity. Ceramic rings are used as electrical insulation between the boat leaves of the graphite boat.

[0004] For the poly process of TOPCoN cells, during the film layer deposition process, doped phosphorus amorphous silicon will be deposited on the boat leaves and ceramic rings of the graphite boat at the same time. And too much amorphous silicon layer deposited on the ceramic ring will cause conduction between two boat leaves, making the boat leaves no longer insulated, easily causing power fluctuations and then interrupting the process, increasing rework, and further affecting the output and production cost.

[0005] Therefore, it is necessary to provide a graphite boat ceramic ring to solve the above technical problems. Summary of the Utility Model

[0006] The utility model provides a graphite boat ceramic ring, which solves the problem that too much amorphous silicon layer deposited on the ceramic ring will cause conduction between two boat leaves.

[0007] To solve the above technical problems, the graphite boat ceramic ring provided by the utility model includes: an outer ring and an inner ring;

[0008] A connecting part is arranged between the outer ring and the inner ring. The outer ring, the inner ring and the connecting part are integrally formed. Trapezoidal grooves are arranged on both the upper and lower surfaces of the connecting part. The hypotenuse angle of the trapezoidal groove is 60°. A rough serrated structure is arranged on the outer surface of the outer ring.

[0009] Preferably, the outer diameter of the outer ring is 17 mm, the inner diameter is 15 mm, and the width is 10 mm.

[0010] Preferably, the outer diameter of the inner ring is 11 mm, the inner diameter is 9 mm, and the width is 12 mm.

[0011] Preferably, the serration angle of the serrated structure is 45 - 60°, and the cutting depth is 1 - 5 mm.

[0012] Preferably, the graphite boat ceramic ring includes an upper component, a lower component and a connecting piece. The connecting piece is in a circular ring structure. A plurality of first positioning blocks are fixedly connected to the bottom of the upper component. A plurality of first positioning grooves are arranged at the top of the connecting piece. A plurality of second positioning blocks are fixedly connected to the bottom of the connecting piece. A plurality of second positioning grooves are formed at the top of the lower component.

[0013] Preferably, the first positioning block is adapted to the first positioning groove, and the second positioning block is adapted to the second positioning groove.

[0014] Compared with the related art, the graphite boat ceramic ring provided by the present invention has the following beneficial effects:

[0015] The present invention provides a graphite boat ceramic ring. Through the integral molding of the outer ring, the inner ring and the connecting part, and the trapezoidal groove formed on the connecting part, as well as the serrated structure on the outer ring, the surface area of the ceramic ring can be increased, thereby increasing the deposition area on the surface of the ceramic ring, reducing the risk of conduction between the boat pages, reducing the number of process reworks, increasing the output and reducing the production cost at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a first embodiment of the graphite boat ceramic ring provided by the present invention;

[0017] Figure 2 is a schematic cross-sectional view of the graphite boat ceramic ring provided by the present invention;

[0018] Figure 3 is a schematic structural diagram of a second embodiment of the graphite boat ceramic ring provided by the present invention.

[0019] Reference numerals in the drawings: 1, outer ring; 2, inner ring; 3, connecting part; 4, trapezoidal groove; 5, serrated structure; 6, upper component; 7, lower component; 8, connecting piece; 9, first positioning block; 10, first positioning groove; 11, second positioning block; 12, second positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described below with reference to the drawings and embodiments.

[0021] First Embodiment

[0022] Please refer to Figure 1 , Figure 2 , wherein, Figure 1 is a schematic structural diagram of a first embodiment of the graphite boat ceramic ring provided by the present invention; Figure 2 is a schematic cross-sectional view of the graphite boat ceramic ring provided by the present invention. The graphite boat ceramic ring includes: an outer ring 1 and an inner ring 2;

[0023] A connecting part 3 is arranged between the outer ring 1 and the inner ring 2. The outer ring 1, the inner ring 2 and the connecting part 3 are integrally formed. Trapezoidal grooves 4 are arranged on both the upper and lower surfaces of the connecting part 3. The hypotenuse angle of the trapezoidal groove 4 is 60°. A rough serrated structure 5 is arranged on the outer surface of the outer ring 1.

[0024] By arranging the trapezoidal grooves 4 and the serrated structure 5 on the ceramic ring, a lightweight effect can be achieved, the manufacturing cost is reduced, and it is also convenient for molding.

[0025] The trapezoidal groove 4 has a length of 1 mm, a width of 4 mm, and a height of 4 mm.

[0026] The outer diameter of the outer ring 1 is 17 mm, the inner diameter is 15 mm, and the width is 10 mm.

[0027] The outer diameter of the inner ring 2 is 11 mm, the inner diameter is 9 mm, and the width is 12 mm.

[0028] The serrated angle of the serrated structure 5 is 45 - 60°, and the cutting depth is 1 - 5 mm.

[0029] Preferably, the serrated angle of the serrated structure 5 is 45°, and the cutting depth is 2 mm

[0030] Compared with the related technology, the graphite boat ceramic ring provided by the present utility model has the following beneficial effects:

[0031] Through the integral molding of the outer ring 1, the inner ring 2 and the connecting part 3, and by opening trapezoidal grooves 4 on the connecting part 3 and the serrated structure 5 on the outer ring 1, the surface area of the ceramic ring can be increased, thereby increasing the deposition area on the surface of the ceramic ring, reducing the risk of conduction between the boat pages, reducing the number of process reworks, increasing the output, and reducing the production cost at the same time.

[0032] Second Embodiment

[0033] Please refer to Figure 3 , based on the graphite boat ceramic ring provided in the first embodiment of the present application, the second embodiment of the present application proposes another graphite boat ceramic ring. The second embodiment is only a preferred manner of the first embodiment, and the implementation of the second embodiment will not affect the independent implementation of the first embodiment.

[0034] Specifically, the difference between the graphite boat ceramic ring provided in the second embodiment of the present application is that the graphite boat ceramic ring includes an upper component 6, a lower component 7 and a connecting member 8. The connecting member 8 is a circular ring structure. A plurality of first positioning blocks 9 are fixedly connected to the bottom of the upper component 6. A plurality of first positioning grooves 10 are arranged on the top of the connecting member 8. A plurality of second positioning blocks 11 are fixedly connected to the bottom of the connecting member 8. A plurality of second positioning grooves 12 are opened on the top of the lower component 7.

[0035] Both the upper part 6 and the lower part 7 include features such as an outer ring 1, an inner ring 2, a connecting part 3, a trapezoidal groove 4, and a serrated structure 5.

[0036] The inner diameter of the connecting member 8 is 9 mm and the outer diameter is 17 mm.

[0037] The first positioning block 9 is adapted to the first positioning groove 10, and the second positioning block 11 is adapted to the second positioning groove 12.

[0038] Compared with the related art, the graphite boat ceramic ring provided by the present utility model has the following beneficial effects:

[0039] By dividing the graphite boat ceramic ring into three parts: an upper part 6, a lower part 7, and a connecting member 8, the effect of adjusting the width of the graphite boat ceramic ring can be achieved by installing different numbers of connecting members 8, so that it can be adapted to different scenarios and is also convenient for assembly. Only need to stack multiple connecting members 8 so that the second positioning block on the top connecting member 8 enters the first positioning groove 10 of the bottom connecting member, and then snap the upper part 6 and the lower part 7 with the connecting member 8.

[0040] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present utility model.

Claims

1. A graphite boat ceramic ring, characterized in that, Comprising: An outer ring and an inner ring; A connecting part is arranged between the outer ring and the inner ring. The outer ring, the inner ring and the connecting part are integrally formed. Trapezoidal grooves are provided on both the upper and lower surfaces of the connecting part. The hypotenuse angle of the trapezoidal groove is 60°. A rough serrated structure is provided on the outer surface of the outer ring.

2. The graphite boat ceramic ring according to claim 1, characterized in that, The outer diameter of the outer ring is 17 mm, the inner diameter is 15 mm, and the width is 10 mm.

3. The graphite boat ceramic ring according to claim 1, characterized in that, The outer diameter of the inner ring is 11 mm, the inner diameter is 9 mm, and the width is 12 mm.

4. The graphite boat ceramic ring according to claim 1, wherein The serration angle of the serrated structure is 45 - 60°, and the cutting depth is 1 - 5 mm.

5. The graphite boat ceramic ring according to claim 1, wherein The graphite boat ceramic ring includes an upper part, a lower part and a connecting member. The connecting member is in a circular ring structure. A plurality of first positioning blocks are fixedly connected to the bottom of the upper part. A plurality of first positioning grooves are provided on the top of the connecting member. A plurality of second positioning blocks are fixedly connected to the bottom of the connecting member. A plurality of second positioning grooves are formed in the top of the lower part.

6. The graphite boat ceramic ring according to claim 5, wherein The first positioning block is adapted to the first positioning groove, and the second positioning block is adapted to the second positioning groove.

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