Preparation equipment of BC battery

Abstract

The invention discloses BC battery preparation equipment which comprises diffusion equipment and a gantry conveying frame, the diffusion equipment is provided with a plurality of diffusion furnace tubes, one side of the diffusion equipment is provided with a preparation chamber matched with the diffusion furnace tubes, and the lower end of the diffusion equipment is fixedly connected with a first sliding block; a sliding rail matched with the first sliding block is arranged below the diffusion equipment, a cleaning mechanism matched with the diffusion furnace tube is installed on the gantry conveying frame, the cleaning mechanism comprises an outer barrel and an inner barrel, the outer barrel and the inner barrel are integrally formed, a cavity is formed between the inner barrel and the outer barrel, the cavity is filled with inert gas, and the outer barrel and the inner barrel are integrally formed. And a heat exchange piece matched with the inner cylinder is mounted on the outer cylinder. Compared with the prior art, the preparation equipment of the BC battery has the advantages that potential safety hazards caused by manual cleaning can be avoided, damage to the diffusion furnace tube in the manual dismounting and cleaning process can be avoided, meanwhile, the cleaning efficiency can be improved, the production cost of an enterprise can be reduced, and the production efficiency can be greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery production equipment, and in particular relates to a preparation device for a BC battery. Background Art

[0002] In recent years, with the rapid development of the photovoltaic industry, back contact cells (BC cells) have attracted much attention due to their high efficiency characteristics. In the manufacturing process of BC cells, the boron diffusion process is one of the key links. However, this process produces powdered boron trioxide and silicon dioxide, which adhere to the quartz boat and form accumulations that are difficult to remove. Over time, these accumulations reduce the efficiency of the diffusion process and thus affect the performance of the cell. Therefore, regular cleaning of the quartz boat and diffusion furnace tubes has become a necessary measure to ensure stable product quality.

[0003] At present, cleaning work mainly relies on manual operation, using corrosive cleaning solutions to remove the accumulation on the furnace tubes. However, this method has significant shortcomings and risks. First, corrosive solutions are potentially harmful to the human body, and complex protective equipment must be worn for operation, which increases the difficulty of safety management. Secondly, during the manual cleaning process, it is very likely that the furnace tubes will be damaged due to improper operation, which not only requires the equipment to be repaired and replaced, resulting in increased production costs for the company, but also causes production stagnation, making it impossible to complete production tasks as planned, affecting delivery time, and thus damaging customer trust and corporate market competitiveness.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a BC battery preparation device, which can solve the technical problems raised in the above background technology.

[0006] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows: A preparation device for BC batteries includes a diffusion device and a gantry conveyor frame, wherein a plurality of diffusion furnace tubes are arranged on the diffusion device, a preparatory chamber matching the diffusion furnace tubes is arranged on one side of the diffusion device, a first slider is fixedly connected to the lower end of the diffusion device, a slide rail matching the first slider is arranged below the diffusion device, a cleaning mechanism matching the diffusion furnace tubes is installed on the gantry conveyor frame, the cleaning mechanism includes an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are integrally formed, a cavity is formed between the inner cylinder and the outer cylinder, the cavity is filled with inert gas, a heat exchanger matching the inner cylinder is installed on the outer cylinder, a heat conduction mechanism is installed between the outer cylinder and the inner cylinder, a ninth connecting tube is installed on the outer cylinder, a plurality of evenly distributed nozzles are installed on the ninth connecting tube, and a sixth connecting tube is installed between the inner cylinder and the ninth connecting tube.

[0007] In one or more embodiments of the present invention, a baffle is installed on the outer cylinder, and the baffle separates the outer cylinder to form a first cavity and a second cavity. The inner cylinder is located in the first cavity, and an output pump is installed in the second cavity. A heat exchange tube is installed at the output end of the output pump, and the heat exchange tube runs through the heat conduction mechanism. The input end of the output pump is fixedly connected to an eighth connecting tube, and the end of the eighth connecting tube away from the output pump is connected to a cleaning solution source.

[0008] In one or more embodiments of the present invention, the heat conducting mechanism includes a plurality of heat exchange members, a slide groove is provided on the heat exchange member, a heat exchange block matching the slide groove is slidably connected to the heat exchange member, a memory metal member is installed between the heat exchange block and the bottom wall of the slide groove, the memory metal member is deformed when heated, forcing the heat exchange block to be located in the slide groove, a heat resistance block is fixedly connected to one end of the heat exchange block away from the memory metal member, a baffle matching the heat resistance block is provided on the outer cylinder, a second magnetic block is fixedly connected to the bottom wall of the baffle, a first magnetic block matching the baffle is fixedly connected to the heat resistance block, the first magnetic block and the second magnetic block repel each other, and the force generated by the deformation of the memory metal member is greater than the force repelling each other between the first magnetic block and the second magnetic block.

[0009] In one or more embodiments of the present invention, a circulation system is arranged on the preparation chamber, and the circulation system includes a circulation pump, the output end of the circulation pump is fixedly connected to a first connecting pipe, the end of the first connecting pipe away from the circulation pump is fixedly connected to an air outlet plate, the input end of the circulation pump is fixedly connected to a second connecting pipe, the end of the second connecting pipe away from the circulation pump is fixedly connected to a filtering mechanism, the inner bottom wall of the preparation chamber is fixedly connected to a return air plate, and a third connecting pipe is fixedly connected between the return air plate and the filtering mechanism.

[0010] In one or more embodiments of the present invention, the air outlet plate is provided with a plurality of evenly distributed air outlets, and the air return plate is provided with a plurality of evenly distributed return air outlets.

[0011] In one or more embodiments of the present invention, a drain pipe matching the diffusion furnace tube is installed on the diffusion device, and the other end of the drain pipe away from the diffusion device is connected to the filtering mechanism. A temperature measuring device and a first valve are fixedly connected to the first connecting pipe, and a fourth connecting pipe is fixedly connected between the temperature measuring device and the first valve.

[0012] In one or more embodiments of the present invention, a microbubble generating system is installed on one side of the fourth connecting tube, the microbubble generating system includes a microbubble generator, a fifth connecting tube is installed between the microbubble generator and the fourth connecting tube, a third valve is fixedly connected to the fifth connecting tube, a second valve is fixedly connected to the fourth connecting tube, and an end of the fourth connecting tube away from the first valve is communicated with the ninth connecting tube.

[0013] In one or more embodiments of the present invention, a cold air supply system is provided on one side of the fourth connecting pipe, and the cold air supply system includes a cold air generator. A seventh connecting pipe is installed between the cold air generator and the fourth connecting pipe, and a fourth valve is provided on the seventh connecting pipe.

[0014] In one or more embodiments of the present invention, the gantry conveyor frame includes a frame body, a first walking device is slidably connected to the frame body, a second walking device is slidably connected to the first walking device, the sliding direction of the first walking device is perpendicular to the sliding direction of the second walking device, a third walking device is slidably connected to the second walking device, the third walking device slides up and down on the second walking device, and the cleaning mechanism is detachably mounted on the third walking device.

[0015] In one or more embodiments of the present invention, the outer diameter of the cleaning mechanism is smaller than the inner diameter of the diffusion furnace tube.

[0016] Compared with the prior art, the BC battery preparation equipment of the present invention can avoid the safety hazards caused by manual cleaning and avoid damage to the diffusion furnace tubes during manual disassembly and cleaning. At the same time, it can improve the cleaning efficiency, reduce the production cost of the enterprise, and greatly improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a BC battery manufacturing device according to an embodiment of the present invention Figure 1 ; Figure 2 for Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 for Figure 1 Schematic diagram of the structure at F in the middle; Figure 4 A schematic diagram of a BC battery manufacturing device according to an embodiment of the present invention Figure 2 ; Figure 5 A schematic diagram of a BC battery manufacturing device according to an embodiment of the present invention Figure 3 ; Figure 6 It is a structural schematic diagram of a cleaning mechanism in one embodiment of the present invention; Figure 7 for Figure 6 Schematic diagram of the structure at B in the middle; Figure 8 is a cross-sectional view of a cleaning mechanism in one embodiment of the present invention; Fig. 9 for Figure 8 Schematic diagram of the structure at C in the middle; Fig.10 for Figure 8 Schematic diagram of the structure at D in the middle; Fig.11 for Figure 8 Schematic diagram of the structure at E in the middle; Fig.12 FIG. 4 is a cross-sectional view of a heat conduction mechanism in one embodiment of the present invention.

[0019] Description of main reference numerals: 1. Diffusion equipment; 101. Diffusion furnace tube; 2. First slider; 3. Slide rail; 4. Preparation room; 5. Circulation system; 6. Circulation pump; 7. First connecting pipe; 8. Air outlet plate; 801. Air outlet; 9. Second connecting pipe; 10. Filter mechanism; 11. Return air plate; 1101. Return air outlet; 1102. Third connecting pipe; 12. Temperature measuring equipment; 13. Fourth connecting pipe; 14. First valve; 15. Second valve; 16. Microbubble generating system; 17. Microbubble generator; 18. Fifth connecting pipe; 19. Third valve; 20. Exhaust pipe; 21. Cold air supply system; 22. Cold air generator; 23. Seventh connecting pipe; 24. Fourth valve; 25. Drain pipe ; 26. Gantry conveyor frame; 27. Frame body; 28. First walking device; 29. ​​Second walking device; 30. Third walking device; 31. Cleaning mechanism; 32. Outer cylinder; 3201. Baffle; 3202. Heat dissipation hole; 33. Inner cylinder; 34. Heat exchange component; 3401. Slide; 35. Heat exchange block; 36. Heat resistance block; 3601. Storage slot; 37. Memory metal part; 38. First magnetic block; 39. Second magnetic block; 40. Heat exchange tube; 41. Output pump; 42. Eighth connecting tube; 43. First cavity; 44. Second cavity; 45. Protrusion; 46. Air bag; 47. Ninth connecting tube; 48. Nozzle; 49. Sixth connecting tube; 50. Drain pipe. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0021] like Figure 1 As shown, a BC battery preparation device in one embodiment of the present invention includes a diffusion device 1, and a plurality of diffusion furnace tubes 101 are arranged in the diffusion device 1. The diffusion device 1 is mainly used to allow the BC battery to complete the diffusion process. There are mainly two stages. The first is the pre-diffusion stage. Nitrogen and oxygen are first introduced into the pre-diffusion to maintain the temperature at 20~100°C. After the pre-diffusion is completed, boron trichloride is introduced and the main diffusion process begins. At this time, the temperature rises to 700~1000°C. It is worth noting that in the main diffusion stage, nitrogen is no longer required, so no NOx waste gas is generated during the entire diffusion process. In a high temperature environment, boron trichloride decomposes to form borosilicate glass on the surface of the silicon wafer.

[0022] like Figure 1-2As shown, a preparatory chamber 4 is installed on one side of the diffusion device 1, and an entrance (not shown in the figure) is provided on the preparatory chamber 4, through which the quartz boat enters the preparatory chamber 4. The diffusion device 1 and the preparatory chamber 4 are in contact, and in order to form a gap between the diffusion device 1 and the preparatory chamber 4 during cleaning, a first slider 2 is fixedly connected to the lower end of the diffusion device 1, and a slide rail 3 matching the first slider 2 is fixedly connected to the lower side of the diffusion device 1. The first slider 2 slides along the direction in which the slide rail 3 is set, and can slide on the slide rail 3 with the diffusion device 1.

[0023] like Figure 1 As shown, the diffusion device 1 is provided with a gantry conveyor frame 26, and a cleaning mechanism 31 is installed on the gantry conveyor frame 26. The outer diameter of the cleaning mechanism 31 is smaller than the inner diameter of the diffusion furnace tube 101. The cleaning mechanism 31 can extend into the diffusion furnace tube 101 and form a cavity between the diffusion furnace tube 101 and the inner wall of the diffusion furnace tube 101. The inner wall of the diffusion furnace tube 101 is cleaned by introducing a cleaning solution and bubbles.

[0024] like Figure 1 As shown, the gantry conveyor frame 26 includes a frame 27, the diffusion device 1 is located below the frame 27, and the diffusion device 1 slides along the direction in which the frame 27 is set. A first walking device 28 is slidably connected to the frame 27, and a second walking device 29 is slidably connected to the first walking device 28, and the sliding directions of the first walking device 28 and the second walking device 29 are perpendicular. A third walking device 30 is slidably connected to the second walking device 29, and the third walking device 30 is slidably connected to the second walking device 29 up and down. In this way, the cleaning mechanism 31 can enter different diffusion furnace tubes 101 to achieve cleaning of diffusion furnace tubes 101 at different heights.

[0025] Of course, the gantry conveyor frame 26 can be provided with a cleaning mechanism 31 that matches the number and position of the diffusion furnace tubes 101 , that is, if there are three diffusion furnace tubes 101 on the diffusion device 1 , three cleaning mechanisms 31 can be provided to achieve simultaneous cleaning of the three diffusion furnace tubes 101 .

[0026] like Figures 1 to 12 As shown, the cleaning mechanism 31 includes an outer cylinder 32 and an inner cylinder 33, both of which are made of materials that are not heat-conductive or have poor heat-conductive capacity. The outer cylinder 32 and the inner cylinder 33 are integrally formed, and a cavity is formed between the outer cylinder 32 and the inner cylinder 33. The cavity is filled with a heat-insulating medium such as an inert gas for heat insulation, so as to reduce the temperature outside the outer cylinder 32 from affecting the temperature inside the inner cylinder 33. A heat-conducting mechanism is also installed between the outer cylinder 32 and the inner cylinder 33, and the heat-conducting mechanism is used to transfer a fixed amount of heat from the outside of the outer cylinder 32 to the inside of the inner cylinder 33.

[0027] Specifically, Figures 1 to 12As shown, the inner cylinder 33 is filled with a cleaning solution, which is generally a 20% HF solution. The number of heat-conducting mechanisms is multiple, evenly distributed on the outer cylinder 32. The heat-conducting mechanism includes a heat-resisting block 36, which is Y-shaped, the middle of the heat-resisting block 36 is located in the inner cylinder 33, the outside of the heat-resisting block 36 extends out of the surface of the outer cylinder 32, and each extended portion is provided with a receiving groove 3601, and the heat-resisting block 36 is slidably connected with a heat exchange block 35 matching the receiving groove 3601. When the heat exchange block 35 is exposed to the air, the heat exchange block 35 and the part of the heat exchange block 36 that extends out of the surface of the outer cylinder 32 can absorb heat and transfer heat to the heat exchange element 34, and the heat exchange element 34 then transfers the heat to the cleaning solution in the inner cylinder 33 to achieve heating of the cleaning solution.

[0028] like Figures 1 to 12 As shown, a memory metal piece 37 is installed between the heat exchange block 35 and the bottom wall of the storage groove 3601, a baffle 3201 matching the heat resistance block 36 is provided on the outer cylinder 32, a second magnetic block 39 is fixedly connected to the bottom wall of the baffle 3201, and a first magnetic block 38 matching the baffle 3201 is fixedly connected to the heat resistance block 36. The first magnetic block 38 and the second magnetic block 39 repel each other, and the memory metal piece 37 will curl up after being heated to a certain degree, pulling the heat exchange block 35 to slide into the storage groove 3601. And the pulling force generated by the curling of the memory metal piece 37 is greater than the repulsive force of the first magnetic block 38 and the second magnetic block 39. Therefore, the heat resistance block 36 can be located inside the baffle 3201. When the heat resistance block 36 is located inside the baffle 3201, the heat resistance block 36 can seal the baffle 3201 to prevent heat from continuing to be transferred to the inner tube 33 through the heat exchange block 35 and the heat exchange element 34, thereby preventing the cleaning solution in the inner tube 33 from continuing to be heated.

[0029] In general, the temperature at which the memory metal part 37 curls up when heated matches the optimal working temperature of the cleaning solution. For example, the optimal working temperature of the cleaning solution is 60°C. When the memory metal part 37 is heated to about 60°C, the memory metal part 37 curls up. The different materials of the heat exchange block 35 and the heat exchange element 34, as well as the different materials of the memory metal part 37, will cause the cleaning solution and the memory metal part 37 to be heated to different degrees. The material of the memory metal part 37 can be selected according to the actual situation. Of course, the memory metal part 37 can also use an electric push rod, which drives the push rod by detecting the temperature of the cleaning solution in the inner cylinder 33. However, the cost of using the memory metal part 37 is lower, maintenance costs can be reduced, and the stability is relatively higher.

[0030] like Figure 8 to Figure 12As shown, a baffle 3201 is fixedly connected to the outer cylinder 32, and the baffle 3201 divides the outer cylinder 32 to form a first cavity 43 and a second cavity 44. The inner cylinder 33 is located in the first cavity 43, and the output pump 41 is installed in the second cavity 44. The outer cylinder 32 is provided with a heat dissipation hole 3202 for heat dissipation of the output pump 41, and the input end of the output pump 41 is fixedly connected to the eighth connecting pipe 42, and the end of the eighth connecting pipe 42 away from the output pump 41 is used to connect to a cleaning solution source, that is, a storage device for storing the cleaning solution. The output end of the output pump 41 is fixedly connected to a heat exchange tube 40, and a portion of the heat exchange tube 40 located in the first cavity 43 passes through the heat conduction mechanism, that is, the first cavity 43 can be used as a part of the heat conduction mechanism. At the same time, the cleaning solution can enter the inner tube 33 through the heat exchange tube 40. In this process, during the transportation process, the cleaning solution in the heat exchange tube 40 exchanges heat with the heat exchange tube 40. When the cleaning solution is located in the inner tube 33, the cleaning solution exchanges heat with the heat exchange tube 40 and the heat conduction mechanism to achieve heating of the cleaning solution, and the cleaning solution can be heated more evenly.

[0031] like Figures 8 to 10 As shown, a ninth connecting tube 47 is installed on the outer tube 32, and a plurality of nozzles 48 are installed on the ninth connecting tube 47. A sixth connecting tube 49 is installed between the ninth connecting tube 47 and the sixth connecting tube 49, and a pump (not shown in the figure) is connected to the sixth connecting tube 49. Through the cooperation of the pump, the sixth connecting tube 49, the ninth connecting tube 47 and the nozzles 48, the cleaning solution in the inner tube 33 is evenly sprayed into the cavity formed by the outer tube 32 and the diffusion furnace tube 101, so that the cleaning solution is in full contact with the inner wall of the diffusion furnace tube 101.

[0032] like Fig.10 As shown, a convex portion 45 is fixedly connected to the outer cylinder 32, and an air bag 46 is installed on the convex portion 45. The outer diameter of the convex portion 45 is smaller than the outer diameter of the diffusion furnace tube 101, and the outer diameter of the air bag 46 is larger than the outer diameter of the diffusion furnace tube 101. The air bag 46 can enter the diffusion furnace tube 101 by insertion, and fully contact with the inner wall of the diffusion furnace tube 101 to form a seal.

[0033] Of course, the airbag 46 can also be inflated to achieve sealing between the diffusion furnace tube 101 and the protrusion 45. The airbag 46 is made of high temperature resistant material, specifically, one or more combinations of nickel-based alloy, ceramic fiber or ceramic-based composite material.

[0034] After the cleaning solution is filled in the cavity between the outer tube 32 and the diffusion furnace tube 101, microbubbles can be continuously output into the cleaning solution through the ninth connecting tube 47. The microbubbles burst after contacting the inner wall of the diffusion furnace tube 101, and the destructive force released when the microbubbles dissipate and dissolve is used to peel off the dirt.

[0035] Specifically, Figure 1 to Figure 5As shown, a microbubble generating system 16 is installed on one side of the diffusion device 1, and the microbubble generating system 16 includes a microbubble generator 17, a third valve 19 is installed on the microbubble generator 17, a fifth connecting pipe 18 is installed on the third valve 19, the third valve 19 is connected to the ninth connecting pipe 47, the third valve 19 transports gas to the ninth connecting pipe 47, and the gas is sprayed through the nozzle 48 to form microbubbles. In the process of transporting gas, the ninth connecting pipe 47 can clean the inner wall of the ninth connecting pipe 47, so that the cleaning solution remaining in the ninth connecting pipe 47 can be discharged, which is beneficial to prolonging the service life of the ninth connecting pipe 47.

[0036] The passage between the sixth connecting pipe 49 and the ninth connecting pipe 47 is controlled by a valve.

[0037] like Figure 1 As shown, the diffusion device 1 is equipped with a drain pipe 25 that matches the diffusion furnace tube 101. The drain pipe 25 is used to discharge the waste gas in the diffusion furnace tube 101 and the waste liquid formed by the cleaning solution cleaning the diffusion furnace tube 101. Specifically, one end of the drain pipe 25 is fixedly connected to a drain pipe 50, and the waste liquid used to clean the diffusion furnace tube 101 is transported from the drain pipe 25 to the drain pipe 50, and then the waste liquid is discharged by the drain pipe 50. Generally, a pump (not shown in the figure) is provided at one end of the drain pipe 50 away from the drain pipe 25, and the waste liquid is discharged by the pump to provide power.

[0038] Among them, the ninth connecting pipe 47 is also connected to a pure water input pipe (not shown in the figure). After the waste liquid is discharged, pure water is sprayed from the ninth connecting pipe 47 and the nozzle 48 to the inner wall of the diffusion furnace tube 101 to clean the waste liquid remaining on the inner wall of the diffusion furnace tube 101, so as to avoid the waste liquid residue from affecting the BC battery production.

[0039] In the above-mentioned preparation device, pure water, cleaning solution, and gas for forming microbubbles are not input into the inner cylinder 33 at the same time, and the three are transported in a certain order, and only the ninth connecting pipe 47 can be used as a transport pipeline. Alternatively, three corresponding pipelines can be set to transport pure water, cleaning solution, and gas for forming microbubbles respectively.

[0040] like Figure 1-2As shown, a circulation system 5 is provided on the preparatory chamber 4, and the circulation system 5 cleans the BC battery by circulating air. The circulation system 5 includes a circulation pump 6, and the output end of the circulation pump 6 is fixedly connected to a first connecting pipe 7, and the end of the first connecting pipe 7 away from the circulation pump 6 is fixedly connected to an air outlet plate 8, and the air outlet plate 8 is provided with a plurality of evenly distributed air outlets 801. The air outlet plate 8 is installed above the preparatory chamber 4 and can transport gas from top to bottom to the preparatory chamber 4. The input end of the circulation pump 6 is fixedly connected to a second connecting pipe 9, and the end of the second connecting pipe 9 away from the circulation pump 6 is fixedly connected to a filter mechanism 10, and a third connecting pipe 1102 is installed on the filter mechanism 10, and the end of the third connecting pipe 1102 away from the filter mechanism 10 is fixedly connected to a return air plate 11, and the return air plate 11 is provided with a plurality of evenly distributed return air outlets 1101. The air discharged from the air outlet plate 8 is recovered through the return air plate 11, and the recovered air passes through the filtering mechanism 10, and the impurities in the recovered air are filtered by the filtering mechanism 10 to make the discharged air purer. During the circulation process, the wind can remove impurities on the surface of the BC battery to prevent the impurities from affecting the quality of the BC battery.

[0041] like Figure 1 As shown, an exhaust pipe 20 is installed between the sewage pipe 25 and the filter mechanism 10, and the exhaust pipe 20 can transport the exhaust gas to the filter mechanism 10, and then the filter mechanism 10 filters it to obtain clean and high-temperature air. A temperature measuring device 12 and a first valve 14 are installed on the first connecting pipe 7, and a fourth connecting pipe 13 is installed between the temperature measuring device 12 and the first valve 14. The temperature measuring device 12 is used to detect the temperature of the clean and high-temperature air, and controls whether the air is discharged through the first connecting pipe 7 or the fourth connecting pipe 13 through the first valve 14.

[0042] That is, under normal conditions, the circulation system 5 is used to circulate air in the preparation chamber 4 to remove impurities on the surface of the BC battery and prevent the impurities from affecting the diffusion effect of the BC battery. When the diffusion furnace tube 101 needs to be cleaned, the circulation system 5 stops circulating air in the preparation chamber 4 and mixes the hot air with the cold air, that is, by inhaling the high-temperature gas in the diffusion furnace tube 101 and the normal-temperature gas in the preparation chamber 4, the two are mixed to cool the high-temperature gas. And it is discharged through the fourth connecting pipe 13, and the end of the fourth connecting pipe 13 away from the first connecting pipe 7 is connected to the ninth connecting pipe 47 (not shown in the figure). Compared with the air in the diffusion furnace tube 101, the lower temperature air is transported to the diffusion furnace tube 101 through the ninth connecting pipe 47 and the nozzle 48 to achieve the cooling of the diffusion furnace tube 101, which can prevent the air from directly entering the diffusion furnace tube 101, resulting in excessive temperature difference and damage to the diffusion furnace tube 101.

[0043] In order to further improve the cooling efficiency of the diffusion furnace tube 101, a cold air supply system 21 is installed on the fourth connecting tube 13, and the cold air supply system 21 includes a cold air generator 22, a seventh connecting tube 23 is installed on the cold air generator 22, and a fourth valve 24 is installed on the seventh connecting tube 23. The cold air generated by the cold air generator 22 is transported to the fourth connecting tube 13, and the other end of the fourth connecting tube 13 is connected to the ninth connecting tube 47. At this time, the colder gas is transported to the diffusion furnace tube 101 to achieve rapid cooling of the diffusion furnace tube 101. In this process, it should be ensured that the temperature difference between the gas discharged from the diffusion furnace tube 101 and the relatively cold gas input does not exceed 50°C to avoid damage to the diffusion furnace tube 101 due to excessive temperature difference.

[0044] like Figure 1 to Figure 3 As shown, one end of the third valve 19 is connected to the fourth connecting pipe 13, a fifth connecting pipe 18 is installed on the third valve 19, and a second valve 15 is installed on the fourth connecting pipe 13. The fifth connecting pipe 18 and the second valve 15 control whether the fourth connecting pipe 13 transports gas for forming microbubbles or cooling gas.

[0045] It is worth noting that the gas used for cooling and the gas used for forming microbubbles are not output to the diffusion furnace tube 101 at the same time. Therefore, the two can share the ninth connecting tube 47. Of course, it is also possible to choose to set up separate delivery pipelines for delivering the gas used for cooling and the gas used for forming microbubbles.

[0046] When the BC battery preparation equipment is in use, first, the BC battery is placed on the quartz boat and enters through the entrance of the preparation chamber 4. The circulation system 5 will start, and the air will be sucked through the return air plate 11, and the inhaled air will be discharged through the air outlet plate 8 through the circulation pump 6. During the air suction process, the filter mechanism 10 can filter the inhaled air to make the ejected air clean, so as to achieve the cleaning of impurities on the surface of the BC battery. After the BC battery passes through the preparation chamber 4, it will enter the diffusion furnace tube 101 and complete the diffusion process.

[0047] After the diffusion furnace tube 101 has been used for a period of time, silicon dioxide, boron trioxide and other substances are formed on the inner wall of the diffusion furnace tube 101. When these substances adhere to the diffusion furnace tube 101 and affect the preparation of BC batteries, the first slider 2 will carry the diffusion device 1 to move to the end away from the preparation chamber 4, so that a gap is formed between the diffusion device 1 and the preparation chamber 4. This gap is used to place the cleaning mechanism 31, so that the cleaning mechanism 31 can enter the diffusion furnace tube 101 through the gap. Specifically, the first walking device 28 slides on the frame 27, so that the cleaning mechanism 31 is located between the diffusion device 1 and the preparation chamber 4, and then the third walking device 30 slides downward to align the cleaning mechanism 31 with the diffusion furnace tube 101 to be cleaned. The central axis of the cleaning mechanism 31 is aligned with the central axis of the diffusion furnace tube 101 through the second walking device 29, and then the first walking device 28 moves in the opposite direction to insert the cleaning mechanism 31 into the diffusion furnace tube 101, and the air bag 46 contacts the inner wall of the diffusion furnace tube 101 to achieve the sealing of the diffusion furnace tube 101.

[0048] After the cleaning mechanism 31 enters the diffusion furnace tube 101, the diffusion furnace tube 101 will be cooled first. The cooling process is that the circulating pump 6 extracts the hot air in the diffusion furnace tube 101 and mixes the room temperature air and the cold air to form a mixed air. The temperature of the mixed air is lower than the heat of the gas extracted from the diffusion furnace tube 101. The mixed air is transported to the diffusion furnace tube 101 through the circulating pump 6, the fourth connecting pipe 13, and the ninth connecting pipe 47, thereby realizing the cooling of the diffusion furnace tube 101. In the process of cooling the diffusion furnace tube 101, the heat exchange block 35 and the heat exchange element 34 absorb the heat in the diffusion furnace tube 101, and this heat is transferred to the inner tube 33 to heat the cleaning solution so that the cleaning solution is at the optimal working temperature. When the cleaning solution in the inner tube 33 is at the optimal working temperature, the heat exchange block 35 is pulled to the inside of the slide groove 3401 by the force generated by the curling of the memory metal piece 37, so that the heat exchange block 35 and the heat exchange element 34 do not continue to conduct heat.

[0049] When the temperature of the diffusion furnace tube 101 is reduced to the cleaning temperature, generally the temperature of the diffusion furnace tube 101 is 20-60°C, the cleaning solution in the inner tube 33 passes through the sixth connecting tube 49 and the ninth connecting tube 47, and finally sprays out from the nozzle 48, and evenly sprays the cleaning solution onto the inner wall of the diffusion furnace tube 101, and fills the cavity formed by the diffusion furnace tube 101 and the cleaning mechanism 31. Then the microbubble generating system 16 outputs the gas used to generate microbubbles through the fourth connecting tube 13 and the ninth connecting tube 47, so that microbubbles are formed in the cleaning solution, and the force generated by the rupture of the microbubbles is used to peel off impurities, thereby cleaning the impurities.

[0050] After the impurities are cleaned, the waste liquid formed by the cleaning solution and the impurities is discharged from the drain pipe 25 and the liquid discharge pipe 50. After the waste liquid is discharged, the pure water input pipe cooperates with the ninth connecting pipe 47 to transport the pure water to the cavity between the diffusion furnace tube 101 and the cleaning mechanism 31, flushes the remaining cleaning solution, and discharges it from the drain pipe 25 and the liquid discharge pipe 50. After the pure water is discharged, the water in the diffusion device 1 can be blown dry by conveying air into the diffusion device 1 to reduce the generation of water stains.

[0051] like Figure 1 As shown, the upper end of the sewage pipe 25 is connected to the exhaust pipe 20, and the lower end is connected to the liquid discharge pipe 50, and valves are provided at both ends of the sewage pipe 25.

[0052] After the diffusion furnace tube 101 on the diffusion equipment 1 is completely cleaned, the gantry conveyor frame 26 with the cleaning mechanism 31 is located at the upper end of the diffusion equipment 1, and the first slider 2 slides on the slide rail 3 and slides with the diffusion equipment 1 to align the diffusion furnace tube 101 on the diffusion equipment 1 with the preparation chamber 4.

[0053] In the above embodiment, the present invention can realize the cleaning of the diffusion furnace tube 101 without disassembly, avoid the possibility of damage to the diffusion furnace tube 101 during the disassembly process, and can realize the rapid cooling of the diffusion furnace tube 101. Compared with the traditional cleaning after disassembly, the cleaning speed of the diffusion furnace tube 101 is faster and more efficient. In addition, the equipment is not cleaned manually, which can reduce the manual work and increase the frequency of cleaning. Even if the cleaning frequency is increased, it is safer and more efficient than manual cleaning, so as to avoid the situation where the impurities attached to the diffusion furnace tube 101 affect the preparation of BC batteries.

[0054] In another embodiment, a detection mechanism (not shown in the figure) is provided at the front end of the outer cylinder 32, which can determine the degree of impurity adhesion in the diffusion furnace tube 101. According to the degree of impurity adhesion, the microbubble generating system 16 is cooperated to release different amounts of microbubbles to parts with different degrees of impurity adhesion, so as to achieve precise decontamination.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0056] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A BC battery preparation device, characterized in that: include: A diffusion device, wherein a plurality of diffusion furnace tubes are arranged on the diffusion device, a preparatory chamber matching the diffusion furnace tubes is arranged on one side of the diffusion device, a first slider is fixedly connected to the lower end of the diffusion device, and a slide rail matching the first slider is arranged below the diffusion device; A gantry conveyor frame, on which a cleaning mechanism matching the diffusion furnace tube is installed, the cleaning mechanism comprising an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder are integrally formed, a cavity is formed between the inner cylinder and the outer cylinder, and the cavity is filled with an inert gas; The outer tube is provided with a heat exchanger matching the inner tube, a heat conduction mechanism is provided between the outer tube and the inner tube, a ninth connecting tube is provided on the outer tube, a plurality of evenly distributed nozzles are provided on the ninth connecting tube, and a sixth connecting tube is provided between the inner tube and the ninth connecting tube.

2. A BC battery preparation device according to claim 1, characterized in that: The outer cylinder is provided with a baffle plate, which separates the outer cylinder to form a first cavity and a second cavity, and the inner cylinder is located in the first cavity; An output pump is installed in the second cavity, a heat exchange tube is installed at the output end of the output pump, and the heat exchange tube runs through the heat conduction mechanism; The input end of the output pump is fixedly connected with an eighth connecting pipe, and one end of the eighth connecting pipe away from the output pump is connected with a cleaning solution source.

3. The BC battery preparation device according to claim 1, characterized in that: The heat transfer mechanism comprises a plurality of heat exchangers, each of which is provided with a slide groove, and a heat exchange block matching the slide groove is slidably connected to the heat exchanger; A memory metal piece is installed between the heat exchange block and the bottom wall of the slide groove, and the memory metal piece is deformed when heated, forcing the heat exchange block to be located in the slide groove; A heat-resisting block is fixedly connected to one end of the heat exchange block away from the memory metal part, a baffle matching the heat-resisting block is provided on the outer cylinder, a second magnetic block is fixedly connected to the bottom wall of the baffle, a first magnetic block matching the baffle is fixedly connected to the heat-resisting block, the first magnetic block and the second magnetic block repel each other, and the force generated by the deformation of the memory metal part is greater than the force of mutual repulsion between the first magnetic block and the second magnetic block.

4. The BC battery manufacturing equipment according to claim 1, characterized in that: The preparation chamber is provided with a circulation system, the circulation system comprises a circulation pump, the output end of the circulation pump is fixedly connected to a first connecting pipe, and the end of the first connecting pipe away from the circulation pump is fixedly connected to an air outlet plate; The input end of the circulation pump is fixedly connected with a second connecting pipe, the end of the second connecting pipe away from the circulation pump is fixedly connected with a filtering mechanism, the inner bottom wall of the preparation chamber is fixedly connected with a return air plate, and a third connecting pipe is fixedly connected between the return air plate and the filtering mechanism.

5. The BC battery manufacturing equipment according to claim 4, characterized in that: The air outlet plate is provided with a plurality of evenly distributed air outlets, and the air return plate is provided with a plurality of evenly distributed air return outlets.

6. The BC battery manufacturing equipment according to claim 5, characterized in that: The diffusion device is provided with a sewage pipe matching the diffusion furnace tube, and one end of the sewage pipe away from the diffusion device is communicated with the filtering mechanism; The first connecting pipe is fixedly connected with a temperature measuring device and a first valve, and a fourth connecting pipe is fixedly connected between the temperature measuring device and the first valve.

7. A BC battery preparation device according to claim 6, characterized in that: A microbubble generating system is installed on one side of the fourth connecting tube, and the microbubble generating system includes a microbubble generator. A fifth connecting tube is installed between the microbubble generator and the fourth connecting tube, a third valve is fixedly connected to the fifth connecting tube, a second valve is fixedly connected to the fourth connecting tube, and an end of the fourth connecting tube away from the first valve is communicated with the ninth connecting tube.

8. The BC battery manufacturing equipment according to claim 7, characterized in that: A cold air supply system is arranged on one side of the fourth connecting pipe, and the cold air supply system includes a cold air generator. A seventh connecting pipe is installed between the cold air generator and the fourth connecting pipe, and a fourth valve is arranged on the seventh connecting pipe.

9. The BC battery manufacturing equipment according to claim 1, characterized in that: The gantry conveyor frame includes a frame body, a first walking device is slidably connected to the frame body, a second walking device is slidably connected to the first walking device, the sliding direction of the first walking device and the sliding direction of the second walking device are perpendicular to each other, a third walking device is slidably connected to the second walking device, the third walking device slides up and down on the second walking device, and the cleaning mechanism is detachably mounted on the third walking device.

10. The BC battery manufacturing equipment according to claim 1, characterized in that: The outer diameter of the cleaning mechanism is smaller than the inner diameter of the diffusion furnace tube.

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