Furnace auxiliary heating device and reaction furnace

Abstract

The utility model provides a kind of furnace body auxiliary heating device and reaction furnace, wherein furnace body auxiliary heating device includes heat conduction sleeve, is installed on furnace body and extends into furnace body inside;Heating pipe, along the axial direction of heat conduction sleeve is set in heat conduction sleeve;Several heating furnace filaments, are around set in heating pipe outside;Lead-out wire, is connected to heating furnace filament, and along the axial direction of heat conduction sleeve leads out heat conduction sleeve;Furnace body auxiliary heating device controls heating furnace filament heating furnace body inside by lead-out wire.The utility model provides the heat conduction sleeve and heating pipe of furnace body auxiliary heating device are installed on furnace body and extend into furnace body, and the furnace body center area of reaction furnace can be assisted heating by furnace body auxiliary heating device, under the premise of guaranteeing that furnace body radial dimension increases to promote capacity, the temperature of furnace body center area is guaranteed simultaneously, promote the uniformity of temperature in reaction cavity, avoid that silicon wafer film-forming uniformity and battery piece quality decline.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic cell reactor technology, and in particular to a furnace auxiliary heating device and a reactor using the same. Background Technology

[0002] In the field of photovoltaic / solar cell reactor technology, the reactor is a commonly used piece of equipment for silicon wafer coating. The silicon wafer is placed inside the reactor (reaction tube) via a carrier boat to undergo a series of coating processes. Given that the total height of the equipment is limited by the height of the factory building, the industry currently generally adopts the method of increasing the diameter of the reactor (reaction tube) to further increase production capacity.

[0003] However, as the diameter of the furnace body (reaction tube) increases, the center of the furnace body is moved away from the heating device located on the furnace body, resulting in a lower temperature at that location. This reduces the temperature uniformity within the reaction chamber, which in turn leads to a decrease in the uniformity of silicon wafer film formation and the quality of the solar cells. Utility Model Content

[0004] This utility model proposes a furnace auxiliary heating device and a reaction furnace to solve the technical problem of uneven temperature in the reaction chamber of the furnace body as the pipe diameter increases in traditional furnaces.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model provides a furnace auxiliary heating device, including:

[0007] A heat-conducting sleeve is installed on the furnace body and extends into the furnace body;

[0008] The heating element is inserted into the heat-conducting sleeve along its axial direction.

[0009] Several heating wires are wound around the outside of the heating tube;

[0010] Lead wires are connected to the heating element and extend out of the heat-conducting sleeve along its axial direction.

[0011] The auxiliary heating device for the furnace body controls the heating wires to heat the inside of the furnace body via lead-out lines.

[0012] Preferably, at least two sets of heating wires are wound adjacent to each other along the axial direction of the heating tube on the outside of the heating tube;

[0013] At least two sets of lead wires are connected to each set of heating furnace wires, and lead out of the heat-conducting sleeve along the axial direction of the heat-conducting sleeve;

[0014] The auxiliary heating device for the furnace body controls the heating of different areas inside the furnace body by controlling each set of heating wires through each set of lead-out lines.

[0015] Preferably, one end of the heat-conducting sleeve is an open end, and the other end of the heat-conducting sleeve opposite to the open end is a closed end;

[0016] The heating tube includes a main body and a mounting top at one end of the main body. The mounting top extends out of the open end and is connected to the outside of the heat-conducting sleeve via a connecting assembly. The end of the main body away from the mounting top extends towards the closed end.

[0017] Preferably, the outer diameter of the mounting top is larger than the outer diameter of the main pipe;

[0018] The connection components include:

[0019] Several wire-threading supports are installed around the periphery of the mounting top seat, and the two ends of the wire-threading supports extend along the axial direction of the heating tube to the outside of the opening end and the end of the main tube away from the mounting top seat, respectively.

[0020] A retaining collar is fitted onto the outside of the heat-conducting sleeve near the opening end;

[0021] Washers are placed between the retaining collar and the heat-conducting sleeve.

[0022] A fixed bracket is connected between the wire threading support and the fixed collar.

[0023] Furthermore, the auxiliary heating device for the furnace body also includes:

[0024] An interface sleeve is fitted on the outside of the heat-conducting sleeve and spaced apart from the fixed collar at the end away from the opening end. The interface sleeve is installed at the installation interface of the furnace body for installing the furnace body auxiliary heating device.

[0025] The connecting pressure ring is sleeved on the outside of the heat-conducting sleeve and connected between the fixing collar and the interface sleeve;

[0026] A clamping collar is fitted over the outside of the connecting clamping ring and the interface sleeve, and abuts against the end of the fixing collar furthest from the opening end;

[0027] The sealing ring is fitted onto the outside of the heat-conducting sleeve and connected between the connecting pressure ring and the interface sleeve.

[0028] Preferably, the outer diameter of the clamping collar is larger than the outer diameter of the fixed collar, and the inner diameter of the clamping collar is smaller than the outer diameter of the fixed collar but larger than the inner diameter of the fixed collar.

[0029] Preferably, the fixing bracket includes:

[0030] A cross-shaped fixing plate is attached to one end of the wire-threading support that extends out of the opening.

[0031] The four support legs are bent and connected to the four ends of the cross-shaped fixing plate, and the four support legs are supported on the top of the fixing collar respectively;

[0032] An insulating collar is fitted onto the end of the mounting top that extends out of the opening and is connected to the four support feet respectively.

[0033] Furthermore, the auxiliary heating device for the furnace body also includes:

[0034] Several insulating sleeves are connected to the wire threading support and fitted around the heating wire.

[0035] This utility model also provides a reactor, including a furnace body and the aforementioned auxiliary heating device for the furnace body, which is installed in the middle of the furnace body.

[0036] Preferably, the reactor includes multiple auxiliary heating devices for the furnace body, which are evenly spaced apart in the middle of the furnace body.

[0037] Preferably, the furnace body includes:

[0038] Furnace tube body; upper end cap and lower end cap, respectively installed at the upper and lower ends of the furnace tube body;

[0039] The furnace body heating device is installed on the furnace tube body and is used to heat the furnace tube body.

[0040] Multiple auxiliary heating devices for the furnace body are evenly spaced in the middle of the upper end cover, and the corresponding heat-conducting sleeves of each auxiliary heating device extend into the interior of the furnace tube body.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The furnace auxiliary heating device provided by this utility model has a heat-conducting sleeve and a heating pipe that passes through the heat-conducting sleeve. The sleeve is installed on the furnace body and extends into the furnace body. It can be adapted to provide auxiliary heating to the central area inside the furnace body of the reactor through the furnace auxiliary heating device. While ensuring that the radial dimension of the reactor body is increased to improve the production capacity, it also ensures that the temperature in the central area inside the furnace body is not too low, thereby improving the temperature uniformity in the reaction chamber and avoiding the reduction of silicon wafer film uniformity and cell quality. Attached Figure Description

[0043] To more clearly illustrate the technical solution proposed by this utility model, the present utility model will be described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the embodiments and accompanying drawings described in the following detailed description are merely some embodiments of this utility model, and those skilled in the art can make changes to these drawings under the concept of this utility model.

[0044] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the auxiliary heating device for the furnace body provided by this utility model;

[0045] Figure 2 for Figure 1A magnified schematic diagram of a portion of region A in the diagram;

[0046] Figure 3 A front view structural schematic diagram of an embodiment of the furnace auxiliary heating device provided by this utility model;

[0047] Figure 4 A left-side view of the auxiliary heating device for the furnace body provided by this utility model, with part of the heat-conducting sleeve hidden.

[0048] Figure 5 for Figure 4 A magnified schematic diagram of the local structure of region B in the diagram;

[0049] Figure 6 for Figure 4 A magnified schematic diagram of the local structure of region C in the diagram;

[0050] Figure 7 A right-side structural schematic diagram of the auxiliary heating device for the furnace body provided by this utility model, with part of the heat-conducting sleeve hidden.

[0051] Figure 8 for Figure 7 A magnified schematic diagram of the local structure of region D in the diagram;

[0052] Figure 9 A cross-sectional structural schematic diagram of the auxiliary heating device for the furnace body provided by this utility model;

[0053] Figure 10 for Figure 9 A magnified schematic diagram of the local structure of region E in the diagram;

[0054] Figure 11 This is a three-dimensional structural diagram of the reactor provided by this utility model.

[0055] The main markings in the attached figures are as follows:

[0056] 1. Heat-conducting sleeve; 11. Open end; 12. Closed end; 2. Heating tube; 21. Main body; 22. Mounting top seat; 3. Heating wire; 31. First heating wire; 32. Second heating wire; 33. Third heating wire; 4. Lead wire; 41. First lead wire; 42. Second lead wire; 43. Third lead wire; 5. Wire threading support; 6. Fixing collar; 7. Washer; 8. Fixing bracket; 81. Cross fixing plate; 82. Support foot; 83. Insulating collar; 9. Interface sleeve; 10. Connecting pressure ring; 20. Pressing collar; 30. Sealing ring; 40. Insulating sleeve; 50. Reactor; 501. Furnace auxiliary heating device; 502. Furnace body; 5021. Furnace tube body; 5022. Upper end cover; 5023. Lower end cover. Detailed Implementation

[0057] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following description is provided in conjunction with the appendix. Figure 1-8 The present invention will be further described in detail with reference to the embodiments.

[0058] Please refer to the following: Figure 1-8 The auxiliary heating device 501 for the furnace body provided by this utility model includes:

[0059] A heat-conducting sleeve 1 is installed on the furnace body 502 and extends into the furnace body 502; a heating tube 2 is inserted into the heat-conducting sleeve 1 along the axial direction and extends into the furnace body 502; a plurality of heating wires 3 are wound around the outside of the heating tube 2; a lead wire 4 is connected to the heating wires 3 and leads out of the heat-conducting sleeve 1 along the axial direction.

[0060] The auxiliary heating device 501 for the furnace body provided by this utility model has a heat-conducting sleeve 1 and a heating tube 2 passing through the heat-conducting sleeve 1 installed on the furnace body 502 and extending into the furnace body 502. Therefore, the heating wire 3 can be controlled to heat the interior of the furnace body 502 through the lead wire 4. The auxiliary heating device 501 for the furnace body provided by this utility model can be adapted to provide auxiliary heating to the central area inside the furnace body 502 of the reaction furnace 50. While ensuring that the radial dimension of the furnace body 502 of the reaction furnace 50 is increased to improve production capacity, it also ensures that the temperature in the central area inside the furnace body 502 is not too low, thereby improving the temperature uniformity in the reaction chamber and avoiding the degradation of the film uniformity of silicon wafers and the quality of solar cells.

[0061] Please refer to the following: Figure 1-10 In one embodiment of the furnace auxiliary heating device 501 provided by this utility model, at least two sets of heating wires 3 are arranged adjacently around the outside of the heating tube 2 along the axial direction, respectively applying to at least two areas inside the furnace body 502 along the axial direction of the furnace auxiliary heating device 501 (heat-conducting sleeve 1). At least two sets of lead wires 4 are respectively connected to each set of heating wires 3, and respectively lead out of the heat-conducting sleeve 1 along the axial direction of the heat-conducting sleeve 1.

[0062] The auxiliary heating device 501 of the furnace body independently controls each group of heating wires 3 through each group of lead wires 4, thereby heating at least two different areas inside the furnace body 502 along the axial direction of the auxiliary heating device 501 (heat-conducting sleeve 1) in an adjustable temperature.

[0063] Please refer to the following: Figure 1-10 In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, one axial end of the heat-conducting sleeve 1 is an open end 11, and the other axial end of the heat-conducting sleeve 1 relative to the open end 11 is a closed end 12.

[0064] The heating tube 2 includes a main body 21 and a mounting top 22 located at one axial end of the main body 21. The mounting top 22 extends out of the open end 11 and is connected to the outside of the heat-conducting sleeve 1 through a connecting assembly. The main body 21 extends axially away from the end of the mounting top 22 and is close to the closed end 12 and spaced apart from the closed end 12, so that the main body 21 covers most of the area inside the heat-conducting sleeve 1.

[0065] Please refer to the following: Figure 4-10 In a more preferred embodiment of the auxiliary heating device 501 for the furnace body provided by this utility model, the heating wire 3 includes three sets, namely a first heating wire 31, a second heating wire 32 and a third heating wire 33. The first heating wire 31, the second heating wire 32 and the third heating wire 33 are sequentially and adjacently wound around the outside of the heating tube 2 away from the open end 11 (i.e. close to the closed end 12) along the axial direction of the heating tube 2, respectively applied to three regions inside the furnace body 502 in the axial direction of the auxiliary heating device 501 (heat-conducting sleeve 1).

[0066] The lead wire 4 includes three sets, namely the first lead wire 41, the second lead wire 42 and the third lead wire 43. The first lead wire 41, the second lead wire 42 and the third lead wire 43 are respectively connected to the first heating element 31, the second heating element 32 and the third heating element 33, and extend along the axial direction of the heat-conducting sleeve 1 close to the open end 11 (i.e. away from the closed end 12) until the heat-conducting sleeve 1 is led out from the open end 11, and an external power supply is used to power the corresponding heating element 3 to make it heat up.

[0067] That is, the furnace auxiliary heating device 501 provided by this utility model, through the first lead-out line 41, the second lead-out line 42 and the third lead-out line 43 with gradually increasing lengths, allows the furnace auxiliary heating device 501 to independently control the first heating wire 31, the second heating wire 32 and the third heating wire 33 that gradually extend into the heat-conducting sleeve 1 along the axial direction of the heating tube 2 (away from the open end 11 and close to the closed end 12), thereby heating the three regions inside the furnace body 502 along the axial direction of the furnace auxiliary heating device 501 (heat-conducting sleeve 1) in an adjustable temperature.

[0068] Please refer to the following: Figure 4-10In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the first heating wire 31, the second heating wire 32, and the third heating wire 33 are spirally wound around the outside of the heating tube 2 along the axial direction of the heating tube 2, and the first heating wire 31, the second heating wire 32, and the third heating wire 33 extend for the same length along the axial direction of the heating tube 2, respectively applying to three regions of the same length in the axial direction of the furnace auxiliary heating device 501 (heat-conducting sleeve 1) inside the heating furnace 502. That is, the heating tube 2 is divided into three heating regions of three equal lengths by the first heating wire 31, the second heating wire 32, and the third heating wire 33 extending for the same length along its axial direction, realizing that the heating tube 2 heats the interior of the furnace 502 in multiple sections. The temperature inside the furnace 502 can be independently adjusted in different areas according to the carrier boat and silicon wafer conditions and the coating requirements, so that the cell coating is more uniform and the furnace auxiliary heating device 501 can be replaced and maintained in sections.

[0069] Please refer to the following: Figure 1-10 In one embodiment of the auxiliary heating device 501 for the furnace body provided by this utility model, the outer diameter of the mounting top seat 22 is larger than the outer diameter of the main pipe 21.

[0070] The connection components include:

[0071] Several wire-threading supports 5 are inserted around the mounting top seat 22, and the two ends of the wire-threading supports 5 extend along the axial direction of the heating tube 2 to the outside of the opening end 11 and the end of the main tube body 21 away from the mounting top seat 22, respectively; a fixing collar 6 is fitted on the outside of the heat-conducting sleeve 1 near the opening end 11; a washer 7 is placed between the fixing collar 6 and the heat-conducting sleeve 1; and a fixing bracket 8 is connected between the end of the wire-threading support 5 extending out of the opening end 11 and the fixing collar 6.

[0072] Please refer to the following: Figure 1-10 In one embodiment of the auxiliary heating device 501 for the furnace body provided by this utility model, the auxiliary heating device 501 for the furnace body further includes:

[0073] Interface sleeve 9 is fitted outside the heat-conducting sleeve 1 and spaced apart from the fixed collar 6 at the end away from the opening end 11. Interface sleeve 9 is installed at the installation interface of the furnace body 502 for installing the furnace auxiliary heating device 501. Connecting pressure ring 10 is fitted outside the heat-conducting sleeve 1 and connected between the fixed collar 6 and the interface sleeve 9. Pressing collar 20 (pressure cap) is fitted outside the connecting pressure ring 10 and the interface sleeve 9 and abuts against the end of the fixed collar 6 away from the opening end 11. Sealing ring 30 is fitted outside the heat-conducting sleeve 1 and connected between the connecting pressure ring 10 and the interface sleeve 9.

[0074] Please refer to the following: Figure 1-10In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the outer diameter of the clamping ring 20 is larger than the outer diameter of the fixing ring 6, and the inner diameter of the clamping ring 20 is smaller than the outer diameter of the fixing ring 6 but larger than the inner diameter of the fixing ring 6. That is, the heating tube 2 is inserted into the heat-conducting sleeve 1, and two annular convex rings are provided at the axial end of the heat-conducting sleeve 1 near the opening end 11, that is, the fixing ring 6 and the clamping ring 20 are adjacent to each other vertically along the axial direction of the heat-conducting sleeve 1.

[0075] The upper, smaller-diameter retaining ring 6 (first convex ring) serves as a support structure for connecting the heat pipe, while the lower, larger-diameter pressing ring 20 (second convex ring) serves as a sealing structure connecting the upper and lower retaining rings 6 and the interface sleeve 9. The retaining ring 6 (first convex ring) is supported by the pressing ring 20 (second convex ring), the connecting pressure ring 10, and the washer 7. The connecting pressure ring 10, the sealing ring 30, and the interface sleeve 9 are supported by the clamping ring 20 (the second convex ring). That is, the sealing ring 30 is pressed between the bottom end of the connecting pressure ring 10 and the top end of the interface sleeve 9, and the sealing ring 30 is also sleeved on the outer surface of the heat-conducting sleeve 1. By locking the clamping ring 20 which is sleeved on the outside of the connecting pressure ring 10 and the interface sleeve 9, the connecting pressure ring 10 and the interface sleeve 9 are simultaneously pressed, thereby compacting the sealing ring 30 pressed between the bottom end of the connecting pressure ring 10 and the top end of the interface sleeve 9, preventing the process gas inside the furnace body 502 from leaking to the outside of the furnace body 502 from the connection between the furnace body 502 and the furnace auxiliary heating device 501.

[0076] Please refer to the following: Figure 1-10 In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the fixed bracket 8 includes:

[0077] A cross-shaped fixing plate 81 is connected to one end of the wire threading support 5 extending from the opening end 11; four support legs 82 are bent and connected to the four ends of the cross-shaped fixing plate 81 of the furnace auxiliary heating device 501, and the four support legs 82 are respectively supported on the top of the fixing collar 6; an insulating collar 83 is fitted onto the end of the mounting top seat 22 extending from the opening end 11, and is respectively connected to the four support legs 82.

[0078] Please refer to the following: Figure 1-10In a more preferred embodiment of the auxiliary heating device 501 for the furnace body provided by this utility model, one end of the wire threading support 5 extending out of the opening end 11 is provided with an external thread, so that one end of the wire threading support 5 extending out of the opening end 11 forms a connecting stud. The cross fixing plate 81 is provided with a threaded hole (not shown in the figure) that matches the external thread of the connecting stud. The cross fixing plate 81 is fastened to one end of the wire threading support 5 extending out of the opening end 11 through its threaded hole and the threaded connection of the connecting stud. At the same time, it is supported by four support feet 82 on the top of the fixing ring 6 sleeved on the outside of the heat-conducting sleeve 1 to prevent the heating tube 2 from falling into the heat-conducting sleeve 1 and hitting the closed end 12 at the bottom of the heat-conducting sleeve 1.

[0079] In other embodiments of the auxiliary heating device 501 for the furnace body provided by this utility model, the fixed bracket 8 can also be a circular or rectangular sheet metal frame or frame.

[0080] In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the heat-conducting sleeve 1 is made of quartz material. This allows the heat-conducting sleeve 1 to prevent the process gas in the furnace body 502 from contacting the heating wire 3 on the heating tube 2 inside the heat-conducting sleeve 1, thereby protecting the heating tube 2 and preventing damage to the heating wire 3. On the other hand, since the quartz heat-conducting sleeve 1 has good thermal conductivity, it can quickly transfer the heat emitted by the heating wire 3 to the interior of the furnace body 502, providing timely heat for the coating process to meet its temperature requirements inside the furnace.

[0081] In a preferred embodiment of the auxiliary heating device 501 for the furnace body provided by this utility model, the heating tube 2 is made of materials such as quartz and silicon carbide.

[0082] In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the gasket 7 is made of polytetrafluoroethylene (PTFE). Since the gasket 7 is positioned between the fixing ring 6 and the heat-conducting sleeve 1, and the heat-conducting sleeve 1 is preferably made of quartz, a material with good thermal conductivity but prone to breakage, the gasket 7, made of highly flexible PTFE, provides cushioning to prevent direct rigid contact between the fixing ring 6 and the heat-conducting sleeve 1, thus avoiding damage to the heat-conducting sleeve 1. Furthermore, the gasket 7 on the heat-conducting sleeve 1 enhances the sealing effect and resists the corrosiveness of acidic and alkaline media, giving the furnace auxiliary heating device 501 a longer service life.

[0083] Please refer to the following: Figure 1-10 In a more preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the heat-conducting sleeve 1, the heating tube 2 and the interface sleeve 9 are all hollow cylindrical, and the fixing ring 6, the washer 7, the connecting pressure ring 10, the pressing ring 20 and the sealing ring 30 are all annular.

[0084] In other embodiments of the auxiliary heating device 501 for the furnace body provided by this utility model, the heat-conducting sleeve 1, the heating tube 2 and the interface sleeve 9 may all be hollow cubes or cuboids, and the fixing ring 6, the washer 7, the connecting pressure ring 10, the pressing ring 20 and the sealing ring 30 may also be rectangular rings or square rings.

[0085] Please refer to the following: Figure 4-10 In a preferred embodiment of the furnace auxiliary heating device 501 provided by this utility model, the furnace auxiliary heating device 501 further includes:

[0086] Several insulating sleeves 40 are connected to the wire threading support 5 and sleeved on the outside of the heating wire 3.

[0087] Please refer to the following: Figure 1-11 The present invention also provides a reactor 50, including a furnace body 502 and the aforementioned auxiliary heating device 501. The auxiliary heating device 501 is installed in the middle of the furnace body 502, and its heat-conducting sleeve 1, heating tube 2, and heating wire 3 extend into the central part / area of ​​the furnace body 502.

[0088] Please see Figure 11 In one embodiment of the reactor 50 provided by this utility model, the reactor 50 includes a plurality of auxiliary heating devices 501. The plurality of auxiliary heating devices 501 are evenly spaced in the middle of the furnace body 502, and the corresponding heat-conducting sleeves 1, heating tubes 2, and heating wires 3 of each auxiliary heating device 501 extend into the central part / area of ​​the furnace body 502 at intervals.

[0089] The reactor 50 provided by this utility model has multiple auxiliary heating devices 501 added to the center of the furnace body 502, and each auxiliary heating device 501 can independently control the heating temperature. At the same time, each auxiliary heating device 501 can independently control the temperature of its different areas. For the furnace body 502 with a large radial dimension, it can ensure that the temperature at the center of the furnace body 502 meets the standard, so as to improve the uniformity of the film formation of the battery cells.

[0090] Please see Figure 11 In a preferred embodiment of the reaction furnace 50 provided by this utility model, the axial directions of the furnace body 502, the heat-conducting sleeve 1, and the heating tube 2 are all parallel to the vertical direction. The furnace body 502 includes:

[0091] The furnace tube body 5021 has a reaction chamber inside; the upper end cover 5022 and the lower end cover 5023 are respectively installed at the upper and lower ends of the furnace tube body 5021 and seal the reaction chamber; the furnace body heating device (not shown in the figure) is installed on the furnace tube body 5021 and is used to heat the furnace tube body 5021.

[0092] Multiple auxiliary heating devices 501 are evenly spaced in the middle of the upper end cover 5022, and the corresponding heat-conducting sleeve 1 of each auxiliary heating device 501 extends into the interior of the furnace tube body 5021.

[0093] Please see Figure 11 In a more preferred embodiment of the reactor 50 provided by this utility model, five auxiliary heating devices 501 are radially (annularly) evenly distributed at the center of the upper end cover 5022, so as to make the center temperature inside the furnace body 502 reach the standard.

[0094] In other embodiments of the reactor 50 provided by this utility model, the number of auxiliary heating devices 501 can be adjusted according to the process formula and the uniformity of cell film formation. If the process formula and the uniformity of cell film formation require a higher temperature at the center of the furnace body 502, the number of auxiliary heating devices 501 is increased accordingly. If the process formula and the uniformity of cell film formation require a lower temperature at the center of the furnace body 502, the number of auxiliary heating devices 501 is reduced accordingly.

[0095] In one embodiment of the reactor 50 provided by this utility model, when the diameter of the furnace tube body 5021 of the reactor 50 is large, the interior of the reactor 50 is uniformly divided into three reaction chambers in a 120-degree fan shape. The interior of each reaction chamber is heated by several auxiliary heating devices 501. Furthermore, the furnace tube body 5021 is divided into three detachable furnace tube modules corresponding to the three reaction chambers, allowing each reaction chamber to be maintained independently by disassembling the corresponding furnace tube module, thus facilitating the assembly, disassembly, and maintenance of the furnace tube body 5021 of the reactor 50.

[0096] Please refer to the following: Figure 1-11 The method for replacing the auxiliary heating device 501 of the reactor 50 provided by this utility model is as follows:

[0097] When it is necessary to replace the sealing ring 30, first remove the retaining ring 6 from the heat-conducting sleeve 1, then remove the gasket 7, then loosen the clamping ring 20, then remove the connecting pressure ring 10 from the heat-conducting sleeve 1, and finally remove the old sealing ring 30 and replace it with a new sealing ring 30. Reassemble the above components in the reverse order.

[0098] If heating tube 2 needs to be replaced, if the plant height is sufficient, the fixing bracket 8 can be removed from the top of the reactor 50 and the old heating tube 2 can be taken out from inside the heat-conducting sleeve 1. Then, the new heating tube 2 and fixing bracket 8 can be assembled in reverse order. If the plant height is insufficient, the lower end cover 5023 of the furnace body 502 and fixing bracket 8 can be removed, and the old heating tube 2 can be taken out from inside the heat-conducting sleeve 1 from the bottom of the reactor 50. Then, the new heating tube 2, fixing bracket 8, and lower end cover 5023 can be reassembled in reverse order.

[0099] Therefore, the reactor 50 provided by this utility model can improve production capacity while also facilitating the disassembly and maintenance of the furnace body 502 and the heating tube 2 of the auxiliary heating device 501, and ensuring that the center temperature of the furnace body 502 meets the requirements for uniform film formation of the battery cells, thereby ensuring the production efficiency of the reactor 50.

[0100] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Those skilled in the art should understand that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A furnace auxiliary heating device (501), characterized in that, include: A heat-conducting sleeve (1) is installed on the furnace body (502) and extends into the furnace body (502); The heating tube (2) is inserted into the heat-conducting sleeve (1) along the axial direction of the heat-conducting sleeve (1); Several heating wires (3) are wound around the outside of the heating tube (2); Lead wire (4) is connected to the heating wire (3) and leads out of the heat-conducting sleeve (1) along the axial direction of the heat-conducting sleeve (1); The auxiliary heating device (501) of the furnace body controls the heating wire (3) to heat the inside of the furnace body (502) through the lead wire (4).

2. The furnace auxiliary heating device (501) as described in claim 1, characterized in that, At least two sets of heating wires (3) are wound adjacent to each other on the outside of the heating tube (2) along the axial direction; At least two sets of lead wires (4) are respectively connected to each set of heating furnace wires (3), and the heat-conducting sleeve (1) is led out along the axial direction of the heat-conducting sleeve (1); The auxiliary heating device (501) of the furnace body controls the heating wires (3) of each group to heat different areas inside the furnace body (502) through each group of lead wires (4).

3. The furnace auxiliary heating device (501) as described in claim 2, characterized in that, One end of the heat-conducting sleeve (1) is an open end (11), and the other end of the heat-conducting sleeve (1) relative to the open end (11) is a closed end (12). The heating tube (2) includes a main body (21) and a mounting top (22) located at one end of the main body (21). The mounting top (22) extends out of the open end (11) and is connected to the outside of the heat-conducting sleeve (1) through a connecting assembly. The end of the main body (21) away from the mounting top (22) extends close to the closed end (12).

4. The furnace auxiliary heating device (501) as described in claim 3, characterized in that, The outer diameter of the mounting top (22) is larger than the outer diameter of the main body (21); The connection component includes: Several wire-threading supports (5) are inserted around the mounting top seat (22), and the two ends of the wire-threading supports (5) extend along the axial direction of the heating tube (2) to the outside of the opening end (11) and the end of the main tube body (21) away from the mounting top seat (22), respectively. A fixing collar (6) is fitted on the outside of the heat-conducting sleeve (1) near the opening end (11); Washer (7) is placed between the fixing collar (6) and the heat-conducting sleeve (1); A fixed bracket (8) is connected between the threading support (5) and the fixed collar (6).

5. The furnace auxiliary heating device (501) as described in claim 4, characterized in that, Also includes: An interface sleeve (9) is sleeved on the outside of the heat-conducting sleeve (1) and spaced apart from the fixed collar (6) at one end away from the opening end (11). The interface sleeve (9) is installed on the furnace body (502) at the installation interface for installing the furnace body auxiliary heating device (501). The connecting pressure ring (10) is sleeved on the outside of the heat-conducting sleeve (1) and connected between the fixing sleeve (6) and the interface sleeve (9); A clamping collar (20) is fitted on the outside of the connecting clamping collar (10) and the interface sleeve (9), and abuts against the end of the fixing collar (6) away from the opening end (11); A sealing ring (30) is fitted on the outside of the heat-conducting sleeve (1) and connected between the connecting pressure ring (10) and the interface sleeve (9).

6. The furnace auxiliary heating device (501) as described in claim 5, characterized in that, The outer diameter of the clamping collar (20) is greater than the outer diameter of the fixing collar (6), and the inner diameter of the clamping collar (20) is less than the outer diameter of the fixing collar (6) but greater than the inner diameter of the fixing collar (6).

7. The furnace auxiliary heating device (501) as described in claim 4, characterized in that, The fixed bracket (8) includes: A cross-shaped fixing plate (81) is connected to one end of the wire-threading support (5) that extends out of the opening end (11); Four support legs (82) are bent and connected to the four ends of the cross fixing plate (81), and the four support legs (82) are respectively supported on the top of the fixing collar (6); An insulating collar (83) is fitted onto the end of the mounting top seat (22) that extends out of the opening end (11) and is connected to the four support feet (82) respectively.

8. The furnace auxiliary heating device as described in any one of claims 4-7, characterized in that, Also includes: Several insulating sleeves (40) are connected to the wire threading support (5) and sleeved on the outside of the heating wire (3).

9. A reactor (50), comprising a furnace body (502), characterized in that, It also includes several furnace body auxiliary heating devices (501) as described in any one of claims 1-8, wherein the furnace body auxiliary heating devices (501) are installed in the middle of the furnace body (502).

10. The reactor (50) as described in claim 9, characterized in that, The reactor (50) includes a plurality of auxiliary heating devices (501) for the furnace body, which are evenly spaced in the middle of the furnace body (502).

11. The reactor (50) as described in claim 10, characterized in that, The furnace body (502) includes: Furnace tube body (5021); The upper end cover (5022) and the lower end cover (5023) are respectively installed at the upper and lower ends of the furnace tube body (5021); A furnace body heating device is installed on the furnace tube body (5021) and is used to heat the furnace tube body (5021); Multiple auxiliary heating devices (501) are evenly spaced in the middle of the upper end cover (5022), and the corresponding heat-conducting sleeve (1) of each auxiliary heating device (501) extends into the interior of the furnace tube body (5021).

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