Graphite boat
The graphite boat with rounded edges on void corners addresses the defects in large-sized solar cell production by enhancing yield and stability through improved contact and handling.
Patent Information
- Application Number
- CN202421712163.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-07-18
AI Technical Summary
Traditional graphite boats cannot meet the yield and machine stability requirements of large-sized battery cells, which can easily lead to problems such as graphite boat printing, battery workshop coating process fragments, and poor contact of graphite boats.
The curve design is added to the boat page of the graphite boat, specifically to set chamfers in the inner edge of the void to ensure that there is no trace when the silicon wafer is adsorbed in a negative pressure environment, and the limit structure is optimized through the snap point parts and positioning parts to improve the loading stability of the battery cell.
It improves the product yield and battery production capacity of large-size battery cells, reduces silicon wafer printing, and improves the overall yield of photovoltaic modules and the convenience of automated chip picking.
Smart Images
Figure CN223103068U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of photovoltaic, in particular to a graphite boat. Background Art
[0002] In the photovoltaic field, due to the development of the industry, the size of the battery chips is getting larger and larger. The large-size battery chips have also become a development trend. During the production process, the contact area between the graphite boat and the battery chips is also getting larger and larger. The traditional graphite boat pages cannot meet the yield of large-size battery chips and the stability of the machine, and it is easy to cause more and more defective battery chips. The defective battery chips are mainly concentrated in graphite boat printing, fragments in the coating process of the battery workshop, and poor contact of the graphite boat, etc. Summary of the Utility Model
[0003] Based on this, it is necessary to provide a graphite boat. The graphite boat of the utility model increases the arc on the boat page to ensure that the size of the battery chips increases without affecting the product yield and battery production capacity.
[0004] An embodiment of the present application provides a graphite boat.
[0005] A graphite boat includes a boat body, boat pages and clamping point components. The boat pages are connected to the boat body. The number of the boat pages is multiple. The multiple boat pages are sequentially distributed and spaced on the boat body. There is a gap between adjacent boat pages. A plurality of clearance holes penetrate through the surface of the boat page. A plurality of the clamping point components are respectively connected to the outer side positions of the respective clearance holes on the surface of the boat page. A bearing station for limiting the silicon wafer is formed between the plurality of clamping point components surrounding the corresponding clearance hole. The inner edge of the clearance hole has a chamfer.
[0006] In some embodiments, the clearance hole is a square hole, and each inner edge of the clearance hole has a chamfer.
[0007] In some embodiments, the inner edge of the clearance hole has a chamfer with a radius of R0.3 to R1.0.
[0008] In some embodiments, the top edge of the boat page has a chamfer.
[0009] In some embodiments, the top edge of the boat page has a chamfer with a radius of R0.3 to R1.0.
[0010] In some embodiments, the central line of the clearance hole has an angle of 10° to 30° with the vertical direction.
[0011] In some embodiments, the clamping point component is in a columnar structure. One end in the axial direction of the clamping point component is connected to the surface of the boat page. The outer peripheral surface of the clamping point component has a limiting groove for limiting the edge of the silicon wafer.
[0012] In some of these embodiments, the outer peripheral surface of the clamping point member gradually narrows from one end to the other along its axial direction, wherein the narrower end of the outer peripheral surface of the clamping point member is connected to the surface of the boat page.
[0013] In some of these embodiments, at least three of the clamping point members are respectively connected to the outer side positions of each of the clearance holes on the surface of the boat page, and at least one of the clamping point members is respectively arranged at the two sides and the bottom side positions of the clearance hole.
[0014] In some of these embodiments, a plurality of positioning members are further arranged on the boat page, and the plurality of positioning members are distributed at different positions on the surface of the boat page;
[0015] And / or, a clamping point hole is arranged on the surface of the boat page, and the clamping point member is detachably connected to the clamping point hole.
[0016] By increasing the radian on the inner edge of the clearance hole of the boat page of the above graphite boat, specifically, the inner edge of the clearance hole on the boat page has a chamfer. After the chamfer is arranged at the inner edge position of the clearance hole, when the boat page is in a negative pressure environment, the silicon wafer is adsorbed on the surface of the boat page, and no trace will appear when the silicon wafer contacts the inner edge of the clearance hole due to the existence of the chamfer. The increased radian of the inner edge of the clearance hole can ensure that the size of the battery chip increases without affecting the product yield and battery production capacity, and reduce or avoid the wafer mark on the boat. Further, the above graphite boat has a simple structural design, and the overall yield of the photovoltaic module is improved by controlling details and optimizing and reasonably adjusting the angle. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.
[0018] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals represent the same parts in the following description.
[0019] Figure 1 Schematic diagram of the graphite boat according to an embodiment of the present utility model;
[0020] Figure 2 Cross-sectional schematic diagram of the graphite boat according to an embodiment of the present utility model.
[0021] Description of the reference numerals in the drawings
[0022] 100. Boat page; 101. Clearance hole; 200. Card point component; 300. Loading station; 400. Positioning part. Detailed implementation manner
[0023] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation manner of the present utility model in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.
[0024] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.
[0025] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over", and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "beneath", and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature has a lower horizontal height than the second feature.
[0027] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0029] The present application provides a graphite boat to solve the problems that the graphite boat in the conventional technology cannot meet the requirements of large-size battery cell production yield and machine stability, and easily causes battery cell graphite boat printing, battery workshop coating process fragmentation, and poor contact of the graphite boat. The graphite boat will be described below in conjunction with the accompanying drawings.
[0030] The graphite boat provided in the embodiments of the present application is exemplary, see Figure 1 As shown, Figure 1 A schematic diagram of the structure of a graphite boat provided in an embodiment of the present application. The graphite boat of the present application can be used for the production of photovoltaic modules, and can be specifically used for loading solar cells.
[0031] In order to more clearly illustrate the structure of the graphite boat, the graphite boat will be introduced below with reference to the accompanying drawings. Figure 1 and Figure 2 As shown, Figure 1 A schematic diagram of the structure of a graphite boat provided in an embodiment of the present application, Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of a graphite boat provided in an embodiment of the present application.
[0032] A graphite boat comprises a boat body, a boat leaf 100 and a clamping point component 200.
[0033] Specifically, the boat page 100 is connected to the boat body. The number of boat pages 100 is multiple. The multiple boat pages 100 are sequentially distributed and spaced on the boat body, and there is a gap between adjacent boat pages 100. A number of clearance holes 101 penetrate through both side surfaces of the boat page 100, and the number of the a number of clearance holes 101 can be one or more. A number of clamping parts 200 are respectively connected to the outer side positions of each clearance hole 101 on the surface of the boat page 100. A loading station 300 for limiting the silicon wafer is formed between the a number of clamping parts 200 surrounding the corresponding clearance hole 101. The inner edge of the clearance hole 101 has a chamfer. The inner edge of the clearance hole 101 refers to the corner position between the surface of the boat page and the inner wall of the clearance hole 101.
[0034] By adding a chamfer to the inner edge of the clearance hole 101, the above-mentioned graphite boat can increase the radian of the inner edge of the clearance hole 101, and the increased radian can ensure that the size of the battery chip increases without affecting the product yield and battery production capacity.
[0035] In some embodiments, see Figure 1 As shown, the clearance hole 101 is a square hole, and each inner edge of the clearance hole 101 has a chamfer.
[0036] In some embodiments, the inner edges of the clearance holes 101 respectively have chamfers with R0.3 to R1.0. The chamfer angles of the inner edges of the clearance holes 101 can be set according to actual needs. It should be noted that the R0.3 chamfer refers to a chamfer with a radius of 0.3 mm, and the R1.0 chamfer refers to a chamfer with a radius of 1 mm.
[0037] Preferably, in one specific embodiment, each inner edge of the clearance hole 101 has a chamfer with R0.3 to R1.0.
[0038] In some embodiments, the top edge of the boat page 100 has a chamfer with R0.3 to R1.0. The chamfer angle of the top edge of the boat page 100 can be set according to actual needs. The top edge of the boat page 100 refers to the corner position between the surface of the boat page and the top surface of the boat page. Preferably, the top edge of the boat page 100 has a chamfer with R0.4 to R0.7.
[0039] In some embodiments, see Figure 1 As shown, the center line of the clearance hole 101 has an angle of 10° to 30° with the vertical direction, and the clearance hole 101 is inclined at an angle of 10° to 30°.
[0040] In some embodiments, the clamping part 200 has a columnar structure. One end of the clamping part 200 in the axial direction is connected to the surface of the boat page 100, and the outer peripheral surface of the clamping part 200 has a limiting groove for limiting the edge of the silicon wafer.
[0041] In some embodiments, one end to the other end of the outer peripheral surface of the clamping point member 200 gradually narrows along its axial direction. Among them, the narrower end of the outer peripheral surface of the clamping point member 200 is connected to the surface of the boat page 100. That is to say, the clamping point member 200 is generally in a frustum-shaped column structure. Such a setting of the outer peripheral surface of the clamping point member 200 can facilitate clamping of the silicon wafer on the one hand, and can also adapt to silicon wafers of different sizes on the other hand. When the size of the silicon wafer changes, the position of the silicon wafer on the outer peripheral surface of the clamping point member 200 can change adaptively.
[0042] In some embodiments, at least three clamping point members 200 are respectively connected to the outer side positions of each clearance hole 101 on the surface of the boat page 100, and at least one clamping point member 200 is respectively arranged at the two sides and the bottom side positions of the clearance hole 101.
[0043] For example, referring to Figure 1 As shown, in one specific embodiment, three clamping point members 200 are respectively connected to the outer side positions of each clearance hole 101 on the surface of the boat page 100. Among them, one of the three clamping point members 200 is located at the bottom side of the clearance hole 101, and the other two clamping point members 200 are respectively located at the two side positions of the clearance hole 101. The clamping point member 200 does not need to be arranged at the top side position of the clearance hole 101, so that it is convenient to put the silicon wafer into the loading station 300.
[0044] In some embodiments, the distance between the clamping point member 200 and the inner edge of the clearance hole 101 can be 0.5 mm to 5 mm. Preferably, the distance between the clamping point member 200 and the inner edge of the clearance hole 101 can be 0.5 mm to 2 mm. For example, in one specific embodiment, the distance between the clamping point member 200 and the inner edge of the clearance hole 101 is 0.5 mm. In another specific embodiment, the distance between the clamping point member 200 and the inner edge of the clearance hole 101 is 5 mm. It is not difficult to understand that in other specific embodiments, the distance between the clamping point member 200 and the inner edge of the clearance hole 101 can also be 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 1.7 mm, 2 mm, 2.2 mm, 2.5 mm, 2.8 mm, 3 mm, 3.3 mm, 3.5 mm, 3.8 mm, 4 mm, 4.2 mm, 4.5 mm or any value within the range between the above values.
[0045] In some embodiments, a plurality of positioning members 400 are further arranged on the boat page 100. The plurality of positioning members 400 are distributed at different positions on the surface of the boat page 100.
[0046] In some embodiments, a plurality of positioning members 400 are respectively arranged on the outer sides of each clearance hole 101 on the boat page 100. Referring toFigure 1 As shown, four positioning members 400 are respectively arranged on the outer sides of the clearance holes 101 on the boat page 100, and the four positioning members 400 are respectively located at the four corner positions of the clearance holes 101.
[0047] In some embodiments, the surface of the boat page 100 is provided with clamping point holes. The clamping point member 200 is detachably connected to the clamping point holes. Preferably, the connection mode between the clamping point member 200 and the clamping point holes on the surface of the boat page 100 can be an embedded connection, a threaded connection or the like.
[0048] In some embodiments, the thickness of the boat page 100 is 2 mm to 10 mm. Preferably, the thickness of the boat page 100 is 2 mm to 5 mm. For example, in one specific embodiment, the thickness of the boat page 100 is 2 mm. In another specific embodiment, the thickness of the boat page 100 is 10 mm. It is not difficult to understand that in other specific embodiments, the thickness of the boat page 100 can also be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm or any value within the range between the above values.
[0049] In summary, in the present application, chamfers with R0.3 to R1.0 are respectively arranged at the inner edge of the clearance hole 101 of the boat page 100 and at the top edge position of the boat page. After the chamfer is arranged at the inner edge position of the clearance hole 101, when the boat page 100 is in a negative pressure environment, the silicon wafer is adsorbed on the surface of the boat page 100. When the silicon wafer contacts the inner edge of the clearance hole, no trace will appear due to the existence of the chamfer. The increased radian can ensure that the size of the battery sheet increases without affecting the product yield and battery production capacity, realizing almost zero boat mark on the battery sheet and facilitating automatic wafer picking. The chamfer with R0.3 to R1.0 arranged at the top edge position of the boat page makes it not easy for the operator to break the wafer during wafer picking and can also prevent the occurrence of suction cup marks. Compared with the traditional technology, no additional structure is added in the present application, the graphite boat structure design is simple, and the overall yield of the photovoltaic module is improved by controlling the structural details and optimizing the reasonable angle adjustment.
[0050] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.
[0052] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.
Claims
1. A graphite boat, characterized in that, It includes a boat body, boat pages (100) and clamping point components (200). The boat pages (100) are connected to the boat body. The number of the boat pages (100) is multiple. The multiple boat pages (100) are sequentially distributed and spaced on the boat body. There is a gap between adjacent boat pages (100). A number of clearance holes (101) penetrate through the surface of the boat pages (100). Multiple clamping point components (200) are respectively connected to the outer side positions of each of the clearance holes (101) on the surface of the boat pages (100). A loading station (300) for limiting a silicon wafer is formed by enclosing among the multiple clamping point components (200) around the corresponding clearance hole (101). The inner edge of the clearance hole (101) has a chamfer.
2. The graphite boat according to claim 1, wherein The clearance hole (101) is a square hole, and each inner edge of the clearance hole (101) has a chamfer.
3. The graphite boat according to claim 2, characterized in that, The inner edge of the clearance hole (101) has a chamfer with a radius of R0.3 - R1.
0.
4. The graphite boat according to claim 1, characterized in that, The top edge of the boat page (100) has a chamfer.
5. The graphite boat according to claim 4, wherein The top edge of the boat page (100) has a chamfer with a radius of R0.3 - R1.
0.
6. The graphite boat according to claim 2, characterized in that, The center line of the clearance hole (101) has an included angle of 10° - 30° with the vertical direction.
7. The graphite boat according to any one of claims 1 to 6, characterized in that, The clamping point component (200) has a columnar structure. One end in the axial direction of the clamping point component (200) is connected to the surface of the boat page (100). The outer peripheral surface of the clamping point component (200) has a limiting groove for limiting the edge of the silicon wafer.
8. The graphite boat according to claim 7, wherein The outer peripheral surface of the clamping point component (200) gradually narrows from one end to the other end along its axial direction. Among them, the narrower end of the outer peripheral surface of the clamping point component (200) is connected to the surface of the boat page (100).
9. The graphite boat according to any one of claims 1 to 6 and 8, characterized in that, At least three clamping point components (200) are respectively connected to the outer side positions of each of the clearance holes (101) on the surface of the boat page (100). At least one clamping point component (200) is respectively arranged at the two sides and the bottom side positions of the clearance hole (101).
10. The graphite boat according to any one of claims 1 to 6 and 8, characterized in that, A number of positioning components (400) are further arranged on the boat page (100). The multiple positioning components (400) are distributed at different positions on the surface of the boat page (100); And / or, a clamping point hole is arranged on the surface of the boat page (100), and the clamping point component (200) is detachably connected to the clamping point hole.