Roller way type sintering furnace

Abstract

The utility model relates to the technical field of solar piece sintering, and particularly provides a roller way type sintering furnace. A roller way type sintering furnace comprises a furnace body, a transmission roller is arranged in the furnace body, the transmission roller is sleeved with at least two sets of bearing sleeves, and each set of bearing sleeves comprises two oppositely-arranged bearing sleeves; and each group of bearing sleeves is used for erecting the same battery piece. By means of the design of the multiple sets of bearing sleeves, simultaneous sintering of multiple battery pieces of different specifications can be compatible, the number of the bearing sleeves is the same as the number of the compatible battery pieces of different specifications, and sintering of the battery pieces of multiple specifications in the same sintering furnace can be achieved.

Description

Technical Field

[0001] This application relates to the technical field of solar cell sintering, and particularly to a roller hearth sintering furnace. Background Art

[0002] During the sintering process of solar cells, chain sintering furnaces or roller hearth sintering furnaces are generally used for sintering. Currently, a roller hearth sintering furnace can generally only sinter one specification of solar cells and cannot accommodate the simultaneous sintering of multiple specifications of solar cells. When it is necessary to sinter solar cells of other specifications, all the roller rods need to be replaced, which requires the furnace to stop for cooling, debugging and restarting, resulting in a long production cycle and low production efficiency.

[0003] It should be noted that the above content is not necessarily prior art and is not used to limit the scope of patent protection of this application. Utility Model Content

[0004] The embodiments of this application provide a roller hearth sintering furnace to solve or alleviate one or more of the above technical problems.

[0005] This application provides a roller hearth sintering furnace, including:

[0006] A furnace body, in which a driving roller is provided, and at least two groups of bearing sleeves are sleeved on the driving roller, and each group of bearing sleeves includes two bearing sleeves arranged opposite to each other;

[0007] Each group of bearing sleeves is used to support the same solar cell.

[0008] Through the design of multiple groups of bearing sleeves in this application, the simultaneous sintering of multiple different specifications of solar cells can be accommodated. The number of groups of bearing sleeves is the same as the number of different specifications of solar cells that can be accommodated, and the sintering of multiple specifications of solar cells in the same sintering furnace can be realized.

[0009] According to the embodiments of this application, the bearing sleeve includes a positioning portion and a bearing portion; through holes for sleeving on the driving roller are provided on both the bearing portion and the positioning portion; the positioning portion is used to limit the solar cell between two bearing sleeves. Thus, the solar cell is limited, making the transmission more stable.

[0010] According to the embodiments of this application, the bearing portion is frustum-shaped, and the side surface of the bearing portion is a bearing surface; when placed on the driving roller, the angle between the generatrix of the bearing portion and the horizontal line is 30° to 70°. Thus, the contact area with the solar cell is further reduced, and the negative impact of uneven heating on the solar cell is reduced.

[0011] According to the embodiments of this application, the positioning portion is cylindrical, the positioning portion is provided at the bottom surface of the bearing portion, and the two are coaxially connected; the diameter of the positioning portion is larger than the diameter of the bottom surface of the bearing portion. Thus, the solar cell is limited.

[0012] According to an embodiment of the present application, adjacent bearing sleeves are arranged at intervals; in the direction from the middle to the end of the furnace body, the diameters of the bearing surfaces gradually increase. Thus, interference during the transmission of the battery wafers is avoided, making the operation smoother.

[0013] According to an embodiment of the present application, the bearing sleeve is a detachable structure; the bearing sleeve includes a first part and a second part, and both the first part and the second part include a first connection end and a second connection end; the first connection end of the first part is hinged to the first connection end of the second part, and the second connection end of the first part and the second connection end of the second part are connected by a detachable hinge structure. Thus, the bearing sleeve can be disassembled and installed in situ, and then the adjustment of single-specification battery wafers on the transmission roller can be realized.

[0014] According to an embodiment of the present application, the first part and the second part are axially symmetrically designed. Thus, it is convenient to implement the detachable design.

[0015] According to an embodiment of the present application, a plurality of transmission rollers are arranged side by side in the furnace body, and the same bearing sleeves are provided on each transmission roller. Thus, the transmission of the battery wafers in the furnace body is realized.

[0016] According to an embodiment of the present application, the transmission roller is a two-section type, and the two-section transmission rollers are respectively arranged at both ends of the furnace body, and the two-section transmission rollers located inside the furnace body do not contact each other. Thus, the temperature uniformity is better, and the negative impact of uneven temperature distribution on the sintering of the battery wafers is reduced.

[0017] According to an embodiment of the present application, the material of the transmission roller is ceramic. Thus, it has high-temperature stability.

[0018] According to an embodiment of the present application, the material of the bearing sleeve is ceramic. Thus, it has high-temperature stability. Description of the Drawings

[0019] In the drawings, unless otherwise specified, the same reference numerals throughout the several views denote the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed according to the present application and should not be regarded as limiting the scope of the present application.

[0020] Figure 1 is a schematic structural view of a roller hearth sintering furnace provided by an embodiment of the present application;

[0021] Figure 2 is a cross-sectional view of a transmission roller provided by an embodiment of the present application;

[0022] Figure 3 is a cross-sectional view of a battery wafer placed on a transmission roller provided by an embodiment of the present application;

[0023] Figure 4 is a schematic structural view of a bearing sleeve provided by some embodiments of the present application;

[0024] Figure 5 is a schematic structural view of a bearing sleeve provided by some other embodiments of the present application;

[0025] Figure 6 is a schematic structural view of a bearing sleeve provided by still some other embodiments of the present application;

[0026] Figure 7 is a top view of a roller hearth sintering furnace provided by an embodiment of the present application;

[0027] Figure 8 is a schematic structural view of a bearing sleeve provided by some other embodiments of the present application;

[0028] Figure 9 is a schematic structural view of a bearing sleeve provided by some other embodiments of the present application;

[0029] Figure 10 is a schematic structural view of a bearing sleeve provided by some other embodiments of the present application.

[0030] Explanation of reference numerals:

[0031] 1 - driving roller; 2 - bearing sleeve; 3 - furnace body; 4 - solar cell; 2 - 1 - bearing part; 2 - 2 - positioning part. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above - mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such terms may be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non - exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these process, method, product or device.

[0034] To this end, the embodiments of the present application provide a roller hearth sintering furnace. Based on this, it is to solve the problem that the roller hearth sintering furnace cannot be compatible with battery wafers of different specifications. See the following for details.

[0035] Next, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. It should be noted that these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments described herein.

[0036] The embodiments of the present application provide a roller hearth sintering furnace. Refer to Figure 1 , this roller hearth sintering furnace includes: a furnace body 3, a driving roller 1, and a bearing sleeve 2.

[0037] In some embodiments, the furnace body 3 is used to provide a sintering place for the battery wafer 4. The battery wafer 4 enters the furnace body 3 from the inlet end of the furnace body 3, and after passing through the specified sintering system in the furnace body 3, it is output from the outlet end. Thus, the sintering is completed.

[0038] In some embodiments, the driving roller 1 is located inside the furnace body 3 and is used to transport the battery wafer 4 from the inlet end of the furnace body 3 to the outlet end. It should be noted that see Figure 7 , a plurality of driving rollers 1 are rotatably arranged side by side inside the furnace body 3. Thus, the driving rollers 1 designed side by side rotate in the same direction, so that the battery wafers 4 located thereon are sequentially conveyed along the driving rollers 1 and are output from the outlet end of the furnace body 3. In some embodiments, the driving roller 1 is of a two-piece type, and the two sections of the driving roller are respectively arranged at both ends of the furnace body, and the two sections of the driving roller located inside the furnace body do not contact each other. During operation, the two sections of the driving roller rotate synchronously to realize the conveyance of the battery wafer. Thus, the two-piece type driving roller has better temperature uniformity, a smaller contact area with the battery wafer, and reduces the scratching and pollution of the battery wafer. In some embodiments, the material of the driving roller 1 is ceramic and has high temperature stability. For example, it can be made mainly of oxides such as alumina and silica; it can also be made mainly of non-oxides such as silicon carbide and silicon nitride. Thus, they all have the characteristics of high heat resistance and high corrosion resistance.

[0039] In some embodiments, at least two groups of bearing sleeves 2 are sleeved on the driving roller 1, and each group of bearing sleeves 2 includes two relatively arranged bearing sleeves 2. Thus, a battery wafer can be erected between each group of bearing sleeves 2, and the design of multiple groups of bearing sleeves 2 can be compatible with the simultaneous sintering of multiple battery wafers of different specifications. The number of groups of bearing sleeves 2 is the same as the number of battery wafers 4 of different specifications that can be compatible. For example, two groups of bearing sleeves 2 can be compatible with the simultaneous sintering of two specifications of battery wafers 4, and three groups of bearing sleeves 2 can be compatible with the simultaneous sintering of three specifications of battery wafers 4.

[0040] In some embodiments, refer to Figure 4, the carrier sleeve 2 includes a positioning portion 2-2 and a bearing portion 2-1. Through holes are provided on both the bearing portion 2-1 and the positioning portion 2-2 so as to be sleeved on the driving roller 1; the positioning portion 2-2 is used to limit the battery cell 4 between two carrier sleeves 2. Thereby, the transmission of the battery cell is made more stable, preventing the battery cell from running off due to unevenness caused by roller wear.

[0041] Preferably, the bearing portion 2-1 is frustum-shaped, and the side surface of the bearing portion 2-1 is a bearing surface. Thereby, the bearing surface is an inclined surface, when bearing the battery cell 4, the contact area with the battery cell 4 is reduced, and the negative impact of the contact on sintering is reduced. The inclination range of the bearing surface in the embodiment of the present application is wide, as long as it is a frustum-shaped bearing portion 2-1. For example, Figure 5 the included angle between the generatrix of the bearing portion 2 in Figure 6 and the horizontal line is 35°,

[0042] the included angle between the generatrix of the bearing portion 2 in

[0043] and the horizontal line is 21°. Preferably, when placed on the driving roller, the included angle between the generatrix of the bearing portion 2-1 and the horizontal line is 30° to 70°, for example, 30°, 35°, 50°, 65°, 70°, etc. Thereby, the contact area with the battery cell is further reduced, and the negative impact of uneven heating on the battery cell is reduced. Figures 8 to 10 In some embodiments, referring to Figure 8 which is a schematic structural diagram of the first part and the second part connected as a whole, Figure 9 and Figure 10 which is a schematic diagram of the first part and the second part in a disassembled state. As can be seen from the figure, both the first connection end and the second connection end are located in the bearing portion 2-1. Thereby, through this structural design, the carrier sleeve 2 can be disassembled and installed in place, and then the adjustment of single-specification battery cells on the driving roller 1 can be realized. Referring to Figure 3 Figure 3 ​There are 3 groups of bearing sleeves 2 sleeved on the middle transmission roller 1, and each group of bearing sleeves 2 bears one specification of battery cells 4. During operation, if it is necessary to replace or increase the specification of the battery cells 4, the bearing sleeves 2 can be directly added or the original bearing sleeves 2 can be replaced. If it is not a design that can be disassembled in place, the bearing sleeves 2 need to be removed from the end of the transmission roller 1, and there are more bearing sleeves 2 to be moved, resulting in a large replacement workload.

[0044] In the embodiment of the present application, the adjacent bearing sleeves 2 are arranged at intervals. The design of multiple groups of bearing sleeves 2 can be compatible with multiple different specifications of battery cells, which means that in the direction from the middle to the end of the furnace body 3, the diameter of the bearing surface gradually increases. Figures 1 to 3 All the bearing sleeves 2 in follow this rule. Thus, the battery cells 4 of different specifications are distributed at different heights, which can avoid interference between the battery cells 4. Since the battery cells 4 are conveyed in the furnace body 3 from one transmission roller 1 to the next transmission roller 1, and so on, in the embodiment of the present application, each transmission roller 1 is provided with the same bearing sleeves 2, that is, the specifications and positions of the bearing sleeves 2 on the transmission roller 1 are the same, so as to realize the transmission of the battery cells 4.

[0045] In the embodiment of the present application, the material of the bearing sleeve 2 is ceramic and has high-temperature stability. For example, it can be made mainly from oxides such as alumina and silica; it can also be made mainly from non-oxides such as silicon carbide and silicon nitride. Thus, they all have the characteristics of high heat resistance, high corrosion resistance, etc.

[0046] It should be noted that the terms used here are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used here, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0047] For ease of description, the orientation or positional relationships indicated by orientation terms such as "front, rear, top, bottom, left, right", "horizontal, vertical, perpendicular, horizontal", and "top, bottom", etc. are usually based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing the present application and simplifying the description. Without contrary explanations, these orientation terms do not indicate or imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the outline of each component itself. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "on top of other devices or structures" will then be positioned as "below other devices or structures" or "beneath other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the relative spatial descriptions used here.

[0048] Unless otherwise clearly specified and defined, terms such as "mounted", "connected", "connected to", "fixed", 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, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0049] Unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature can include the direct contact between the first and second features, or can also include the situation where the first and second features are not in direct contact but are in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below", "beneath", and "under" the second feature includes the first feature being directly below and diagonally below the second feature, or simply indicating that the first feature is at a lower horizontal level than the second feature.

[0050] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0051] It should also be noted that the "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures, or characteristics described in connection with that embodiment being included in at least one embodiment generally described in the present application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure, or characteristic in connection with any embodiment, it is intended that the implementation of such feature, structure, or characteristic in combination with other embodiments also fall within the scope of the present application.

[0052] In the above embodiments, the descriptions of the various embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0053] It should also be noted that the above are only the preferred embodiments of the present application, and do not limit the scope of patent protection of the present application. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be similarly included in the scope of patent protection of the present application.

Claims

1. A roller hearth sintering furnace, characterized in that, Comprising: A furnace body, inside which there is a driving roller, and at least two groups of bearing sleeves are sleeved on the driving roller, and each group of bearing sleeves includes two relatively arranged bearing sleeves; Each group of the bearing sleeves is used for mounting the same solar cell.

2. The roller hearth sintering furnace according to claim 1, characterized in that, The bearing sleeve includes a positioning part and a bearing part; Through holes for sleeving on the driving roller are formed in both the bearing part and the positioning part; The positioning part is used for limiting the solar cell between a group of bearing sleeves.

3. The roller hearth sintering furnace according to claim 2, wherein, The bearing part is frustum-shaped, and the side surface of the bearing part is a bearing surface; When placed on the driving roller, the included angle between the generatrix of the bearing part and the horizontal line is 30° - 70°.

4. The roller hearth sintering furnace according to claim 3, characterized in that, The positioning part is cylindrical, the positioning part is arranged at the bottom surface of the bearing part, and the positioning part and the bearing part are coaxially connected; The diameter of the positioning part is larger than the diameter of the bottom surface of the bearing part.

5. The roller hearth sintering furnace according to claim 3, characterized in that, Adjacent bearing sleeves are arranged at intervals; In the direction from the middle to the end of the furnace body, the diameter of the bearing surface gradually increases.

6. The roller hearth sintering furnace according to claim 1, wherein The bearing sleeve is a detachable structure; The bearing sleeve includes a first part and a second part, and both the first part and the second part include a first connection end and a second connection end; The first connection end of the first part is hinged to the first connection end of the second part, and the second connection end of the first part and the second connection end of the second part are connected by a detachable hinge structure.

7. The roller hearth sintering furnace according to claim 6, characterized in that, The first part and the second part are axisymmetrically designed.

8. The roller hearth sintering furnace according to any one of claims 1 to 7, characterized in that, A plurality of driving rollers are arranged side by side inside the furnace body, and the same bearing sleeves are arranged on each driving roller so as to realize the transmission of solar cells.

9. The roller hearth sintering furnace according to claim 8, wherein, The driving roller is of a two-section type, and the two-section driving rollers are respectively arranged at both ends of the furnace body, and the two driving rollers located inside the furnace body do not contact each other.

10. The roller hearth sintering furnace according to claim 8, wherein, The material of the driving roller is ceramic; and / or The material of the bearing sleeve is ceramic.

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