Lamp tube protection structure and solar cell sintering furnace lower furnace body with the protection structure

Abstract

The utility model relates to the technical field of solar cell sintering furnaces, and specifically to a lamp tube protection structure and a lower furnace body of a solar cell sintering furnace having the protection structure, wherein the lamp tube protection structure includes a plurality of rib members spanning above the lamp tube, and the area surrounded by the plurality of rib members forms a collection space for waste to slide down. The lower furnace body of the solar cell sintering furnace having the protection structure has a plurality of lamp tubes arranged in parallel inside, and the lamp tube protection structure spans above the lamp tube, with the lower end fixed to the bottom or inner wall of the furnace. The utility model is mainly used in roller type sintering furnaces and chain rod type sintering furnaces, and by adding a plurality of rib members above the lamp tube in the lower furnace, a diversion function is played, allowing broken solar cell sheets to slide down to the collection space, avoiding blocking the lamp tube under the normally operating solar cell, and effectively ensuring the sintering performance.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell sintering furnaces, in particular to a lamp tube protection structure and a lower furnace body of a solar cell sintering furnace with the protection structure. Background Art

[0002] The solar cell sintering furnace is one of the key equipment in the production process of crystalline silicon cells. Its main function is to form ohmic contact between the screen-printed electrodes and the silicon wafers under high temperature to improve the conversion efficiency of the cells. Therefore, the cells need to be placed in the sintering furnace and transported in and out of the sintering furnace. Currently, with the iteration and development of technology, mesh belt sintering furnaces, roller sintering furnaces, and chain rod sintering furnaces have gradually emerged. Their functions are all to sinter solar cells at high temperatures. The difference is that the carriers that transport the solar cells are different.

[0003] At present, for roller-type sintering furnaces and chain-rod sintering furnaces, the battery cells may break and fall into the lower furnace during use. The current treatment method is to regularly clean the lower furnace. However, when some battery fragments fall onto the lamp tube, they will block the lamp tube and weaken the heat radiated by the lamp tube, affecting the efficiency of the sintering furnace. Therefore, the utility model has developed a lamp tube protection structure and a lower furnace body of a solar cell sintering furnace with the protection structure to solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to provide a lamp protection structure and a lower furnace body of a solar cell sintering furnace having the protection structure, so as to solve the problem in the prior art that solar cell fragments in roller type sintering furnaces and chain rod type sintering furnaces break and fall, thereby blocking the lamp and weakening the efficiency of the sintering furnace.

[0005] The technical solution of the utility model is: a lamp tube protection structure, comprising a plurality of rib components straddling the lamp tube, and a collection space for waste materials to slide down is formed around the area surrounded by the plurality of rib components.

[0006] Preferably, the highest position of the area contour surrounded by the plurality of rib members forms a point or a horizontal line, and the area contour has a guide area inclined in at least one direction.

[0007] Preferably, the rib member corresponding to the guide area is in a straight line shape, or an arc shape, or a combination thereof.

[0008] Preferably, the projection angle between the axis of the lamp tube and the rib member corresponding to the guide area in the horizontal plane can form any angle.

[0009] Preferably, the plurality of rib members at least include a fixing portion and a guiding portion, the guiding portion is located in an area traversed by the diversion area, the fixing portion is fixedly connected at a lower end, and the upper end is used to support the guiding portion.

[0010] Preferably, when the rib member only has a fixing portion and a guide portion, the highest position of the regional contour is configured to form a point.

[0011] Preferably, the plurality of rib members further include a connecting portion, and the connecting portion is used to connect the fixing portion and / or the guiding portion;

[0012] When the connecting portion is horizontal, the highest position of the area outline is configured to form a line; when the connecting portion is non-horizontal, the highest position of the area outline is configured to form a point.

[0013] Preferably, the fixing portion and the guiding portion having the connection node are formed by bending as an integral structure, or are fixedly connected by splicing as a split structure.

[0014] The utility model also discloses a lower furnace body of a solar cell sintering furnace, comprising the above-mentioned lamp tube protection structure and a lower furnace body;

[0015] A plurality of lamp tubes are arranged in parallel in the furnace of the lower furnace body. The lamp tube protection structure is arranged across the lamp tubes, and the lower end is fixed to the bottom or inner wall of the furnace.

[0016] Preferably, the lower furnace body is divided into a plurality of furnaces, each of the furnaces has at least one lamp protection structure, and the lamp protection structure is provided with the aggregate space on the side of the guide area with a lower height.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] (1) For roller-type sintering furnaces and chain-rod sintering furnaces, multiple rib components are added above the lamp tubes in the lower furnace to play a guiding role, allowing broken solar cells to slide to the aggregation space outside the normal operating area of ​​the cells, thereby preventing the broken cells from falling directly onto the lamp tubes below the normal operating area of ​​the cells, thereby ensuring the radiation effect of the lamp tubes below the cells, thereby effectively ensuring their sintering performance.

[0019] (2) The rib members can be arranged in various ways. The highest point of the top can form a point or a line. The guide area formed by the regional contour is used to guide the broken solar cells to the surrounding side. In the direction perpendicular to the axis of the lamp tube, the broken solar cells are prevented from being carried. In the direction parallel to the axis of the lamp tube, the broken solar cells can avoid the area directly below the normally operating solar cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic structural diagram of a lower furnace body of a solar cell sintering furnace described in the utility model;

[0022] Figure 2 This is a schematic diagram of the guide portion of the rib member of the utility model viewed along the axial direction of the lamp tube being in a straight line shape;

[0023] Figure 3 This is a schematic diagram of the guide portion in the rib member of the utility model viewed along the axial direction of the lamp tube in an arc shape;

[0024] Figure 4 This is a schematic diagram of a combination of a straight line and an arc line in the guide portion of the rib member of the utility model viewed along the axial direction of the lamp tube;

[0025] Figure 5 This is a schematic diagram of the fixing portion of the utility model being in an arc shape and connected to the inner wall of the furnace;

[0026] Figure 6 This is a schematic diagram of the fixing portion of the utility model being in a straight line shape and connected to the inner wall of the furnace;

[0027] Figure 7 It is a schematic diagram of the utility model in which the guide part is fixedly connected to the bottom of the furnace as viewed perpendicular to the axial direction of the lamp tube;

[0028] Figure 8 It is a schematic diagram of the utility model in which the guide part is fixedly connected to the inner wall of the furnace as viewed perpendicular to the axial direction of the lamp tube;

[0029] Fig. 9 A schematic diagram of the highest position structure forming point of the regional outline of the utility model;

[0030] Fig.10 It is a principle diagram of the highest position structure forming line of the regional outline of the utility model;

[0031] Fig.11 It is a structural schematic diagram of the highest position structure formation point of the corresponding regional contour when the rib member in the first embodiment of the utility model is composed of a fixing portion and a guide portion;

[0032] Fig.12 It is a structural schematic diagram of the highest position structure formation point of the corresponding regional contour when the rib member in the second embodiment of the utility model is composed of a fixing portion and a guide portion;

[0033] Fig.13It is a structural schematic diagram of a formation point of the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion and a guide portion in the third embodiment of the utility model;

[0034] Fig.14 It is a structural schematic diagram of a formation point of the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion and a guide portion in the fourth embodiment of the present invention;

[0035] Fig.15 It is a structural schematic diagram of a formation point of the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion, a guide portion and a connecting portion in the fifth embodiment of the utility model;

[0036] Fig.16 It is a structural schematic diagram of a formation point of the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion, a guide portion and a connecting portion in the sixth embodiment of the present invention;

[0037] Fig.17 It is a structural schematic diagram of a formation point of the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion, a guide portion and a connecting portion in the seventh embodiment of the utility model;

[0038] Fig.18 It is a structural schematic diagram of a line formed by the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion, a guide portion and a connecting portion in the eighth embodiment of the present invention;

[0039] Fig.19 It is a structural schematic diagram of a line formed by the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion, a guide portion and a connecting portion in the ninth embodiment of the utility model;

[0040] Fig. 20 It is a structural schematic diagram of a line formed by the highest position structure of the corresponding regional contour when the rib member is composed of a fixing portion, a guide portion and a connecting portion in the tenth embodiment of the utility model;

[0041] Fig.21 It is a structural schematic diagram of the utility model in which ribs are added between adjacent guide parts;

[0042] Fig. 22 This is a schematic diagram of the structure of the utility model in which the rib components of the diversion area are constructed into a mesh shape;

[0043] Fig.23 The utility model is a top view of the local structure of the lower furnace body of a solar cell sintering furnace.

[0044] Among them: 1. Lower furnace body;

[0045] 2. Furnace;

[0046] 3. Light tube;

[0047] 4. rib member, 41. fixing portion, 42. guide portion, 43. connecting portion;

[0048] 5. Aggregate space;

[0049] 6. Area outline, 61. Diversion area. DETAILED DESCRIPTION

[0050] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0051] To facilitate understanding, the application scenario of the present application is first explained. In roller-type sintering furnaces and chain-rod sintering furnaces, battery cells will inevitably break during the daily sintering process. When the rollers or brackets are unable to carry the broken battery cells, they will fall into the furnace 2 below. However, since there are lamp tubes 3 in the furnace 2, in traditional sintering furnaces, there is a problem that battery fragments are directly carried on the lamp tubes 3. At this time, the blocked lamp tubes 3 cannot radiate enough heat to the normally operating battery cells above, thereby affecting the performance of the sintering furnace.

[0052] In the existing solar cell sintering furnace, the only way to prevent the generation of cell fragments is to clean the furnace 2 of the lower furnace body 1 regularly, and the cleaning frequency is relatively high. Figure 1 As shown, a lamp protection structure is provided, which is arranged in the furnace 2 of the lower furnace body 1. Figure 2-Figure 8 As shown, a lamp protection structure includes a plurality of rib members 4 arranged across the lamp 3, and a collection space 5 for waste to slide down is formed around the area surrounded by the plurality of rib members 4. Fig. 9 , Fig.10 As shown, a plurality of rib members 4 are defined to enclose a region contour 6 , and the region contour 6 has a flow guide region 61 inclined in at least one direction.

[0053] In one embodiment, if Figure 2 As shown, the plurality of rib members 4 include a fixed portion 41 and a guide portion 42. The guide portion 42 is located in the area traversed by the diversion area 61. The lower end of the fixed portion 41 is fixedly connected, and the upper end is used to support the guide portion 42. The fixed portion 41 and the guide portion 42 with a connection node are formed by bending in an integral structure, or are spliced ​​and fixedly connected in a split structure. Since the rib member 4 corresponding to the diversion area 61 is used to guide the battery fragments, it is necessary to construct it in an inclined shape. In this embodiment, the guide portion 42 is constructed in a straight line. In another embodiment, as shown in FIG. Figure 3As shown, the guide portion 42 may be configured in an arc shape, which may be an upward convex arc shape structure, or a downward concave or side concave arc shape structure; or, as shown in FIG. Figure 4 As shown, the guide portion 42 may also be configured as a combination of a straight line shape and an arc shape.

[0054] As for the connection of the fixing portion 41, in a direction perpendicular to the central axis of the lamp tube 3, as shown in FIG. Figure 2-Figure 4 As shown, the fixing portion 41 can be directly fixed to the bottom of the furnace 2. At this time, the material collecting space 5 is between adjacent area contours 6, or between the area contour 6 and the inner wall of the furnace 2; Figure 5 , Figure 6 As shown, the fixing portion 41 can also be fixed to the inner wall of the furnace 2, and the material collecting space 5 is located in the upper space corresponding to the lowest point of the fixing portion 41. Correspondingly, the fixing portion 41 can be in an arc shape or a straight line shape.

[0055] Accordingly, regarding the connection of the fixing portion 41, in a direction parallel to the central axis of the lamp tube 3, as shown in FIG. Figure 7 As shown, the lower end of the fixing portion 41 is directly fixed to the top of the furnace 2. At this time, the material collecting space 5 is between the contour area and the inner wall of the furnace 2; Figure 8 As shown, the fixing portion 41 can also be fixed on the inner wall of the furnace 2, and the material collecting space 5 is located in the upper space corresponding to the lowest point of the fixing portion 41. Figure 7 As shown, in the sintering furnace, since the width of the cell (corresponding to the area where the cell runs) is smaller than the width of the furnace 2, the sintering of the cell will not be affected as long as the lamp 3 directly below the cell is not blocked. Figure 8 As shown, when the battery fragments slide to both sides along the axis of the lamp tube 3, even if they are finally carried on the lamp tube 3, since they are not directly under the battery cell, the influence on the sintering of the battery cell can be ignored.

[0056] In the present invention, the rib member 4 is mainly used to guide the battery fragments, and its arrangement is varied, such as Fig. 9 , Fig.10 As shown, the highest position of the area outline 6 surrounded by the plurality of rib members 4 is formed into a point or a horizontal line. When the rib member 4 only has the fixing portion 41 and the guide portion 42, the highest position of the area outline 6 is formed into a point. Figure 11-Figure 14 shown.

[0057] In other embodiments, the plurality of rib members 4 include a fixing portion 41, a guiding portion 42 and a connecting portion 43, and the connecting portion 43 is used to connect the fixing portion 41 and / or the guiding portion 42. Figure 15-17 As shown, when the connecting portion 43 is non-horizontal, the highest position of the area contour 6 is formed into a point. Figure 18-Figure 20As shown, when the connecting portion 43 is horizontal, the highest position of the area contour 6 is configured to form a line.

[0058] As a further optimization, in the above embodiments, since the function of the rib member 4 is mainly to prevent the battery sheet from falling directly and being carried on the lamp tube 3, the distance between adjacent guide parts in any horizontal direction can be designed to be smaller than the gap width between adjacent lamp tubes 3. Fig.11 For example, the guide portions 42 are mainly distributed in a divergent manner. However, due to the different shapes of the battery fragments, it is inevitable that long strips of battery fragments will fall directly from between two adjacent guide portions 42 and directly fall onto the lamp tube 3. Therefore, ribs arranged in the horizontal direction can be fixed between adjacent guide portions 42. For details, refer to Fig.21 The shaded area in the figure is shown.

[0059] Of course, in order to achieve more effective protection for the lamp tube 3, a mesh-shaped structure can be directly set above the lamp tube 3. Fig. 22 As shown, in specific implementation, the mesh rib member 4 can be distributed at the position corresponding to the guide area 61, and the distance between any two points in the mesh structure is controlled to be smaller than the gap width between adjacent lamp tubes 3, so as to ensure to the greatest extent that the battery fragments falling through the mesh structure will not be carried on the lamp tube 3. However, it should be noted that in the above-mentioned embodiments, since the shapes of battery fragments are different and the falling states are different in the application scenarios, the lamp tube protection structure is only used to minimize the possibility of battery fragments being carried directly below the area where the battery sheet is running, so as to avoid the battery fragments affecting the performance of the sintering furnace.

[0060] Based on the disclosure of the above implementation modes, in actual application scenarios, such as Fig.23 As shown, the projection angle between the axis of the lamp tube 3 and the rib member 4 (guide portion 42) corresponding to the guide area 61 in the horizontal plane can form any angle, and α1, α2, and α3 in the figure are used to show angles of different sizes.

[0061] The utility model also discloses a lower furnace body of a solar cell sintering furnace, comprising the above-mentioned lamp tube protection structure and a lower furnace body 1; a furnace chamber 2 of the lower furnace body 1 has a plurality of lamp tubes 3 arranged in parallel, the lamp tube protection structure is arranged across the lamp tubes 3, and the lower end is fixed to the bottom or inner wall of the furnace chamber 2.

[0062] Combination Figure 1 , Fig.23 As shown, a plurality of furnace chambers 2 are formed by partitioning in the lower furnace body 1, each furnace chamber 2 has at least one lamp tube protection structure, and a collection space 5 is provided on the side of the lamp tube protection structure where the height of the guide area 61 is low; in actual application scenarios, the collection space 5 can be between the lamp tube protection structure and the inner wall of the furnace chamber 2, or between adjacent lamp tube protection structures.

[0063] The utility model is used for the lower furnace body 1 of the roller type sintering furnace and the chain rod type sintering furnace. By adding a plurality of rib members 4 above the lamp tube 3 in the lower furnace chamber 2, it plays a diversion role, allowing the broken solar cell sheets to slide to the aggregate space 5, avoiding shielding the lamp tube 3 under the normally operating solar cell, and effectively ensuring the performance of the sintering furnace. Since the cell sheet fragmentation is generally an occasional phenomenon, even if it occurs, the cell fragments can be guided to the side of the cell sheet operation area or vertically set in the furnace chamber 2 based on the setting of the lamp tube protection structure. When the cell fragments do not shield the heat radiated by the lamp tube 3, the subsequent cleaning frequency of the cell fragments by the staff can also be greatly reduced.

[0064] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A lamp protection structure, characterized in that: It comprises a plurality of rib members (4) arranged across the top of the lamp tube (3), wherein the peripheral side of the area surrounded by the plurality of rib members (4) forms a collection space (5) for waste to slide down; The highest position of the area contour (6) surrounded by the plurality of rib members (4) forms a point or a horizontal line, and the area contour (6) has a flow guide area (61) inclined in at least one direction; The rib member (4) corresponding to the flow guide area (61) is in a straight line shape, or an arc shape, or a combination thereof.

2. A lamp protection structure according to claim 1, characterized in that: The projection angle between the axis of the lamp tube (3) and the rib member (4) corresponding to the flow guide area (61) in the horizontal plane can form any angle.

3. The lamp protection structure according to claim 1, characterized in that: The plurality of rib members (4) at least comprise a fixing portion (41) and a guiding portion (42), wherein the guiding portion (42) is located in an area traversed by the flow guide area (61), and the fixing portion (41) is fixedly connected at the lower end and used to support the guiding portion (42) at the upper end.

4. A lamp protection structure according to claim 3, characterized in that: When the rib member (4) has only a fixing portion (41) and a guide portion (42), the highest position of the area contour (6) is constructed to form a point.

5. The lamp protection structure according to claim 3, characterized in that: The plurality of rib components (4) further include a connecting portion (43), wherein the connecting portion (43) is used to connect the fixing portion (41) and / or the guiding portion (42); When the connecting portion (43) is horizontal, the highest position structure of the regional outline (6) forms a line; when the connecting portion (43) is non-horizontal, the highest position structure of the regional outline (6) forms a point.

6. The lamp protection structure according to claim 3, characterized in that: The fixing portion (41) and the guiding portion (42) having a connection node are formed by bending in an integral structure, or are fixedly connected by splicing in a split structure.

7. A solar cell sintering furnace lower furnace body, characterized in that: It comprises a lamp tube protection structure as claimed in any one of claims 1 to 6, and a lower furnace body (1); A plurality of lamp tubes (3) are arranged in parallel in the furnace chamber (2) of the lower furnace body (1); the lamp tube protection structure is arranged across the top of the lamp tubes (3) and has its lower end fixed to the bottom or inner wall of the furnace chamber (2).

8. The lower furnace body of a solar cell sintering furnace according to claim 7, characterized in that: The lower furnace body (1) is divided into a plurality of furnace chambers (2), each of the furnace chambers (2) having at least one lamp tube protection structure, and the lamp tube protection structure is provided with the aggregate space (5) on the side of the guide area (61) with a lower height.

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