A sintering furnace for the positive and negative electrode materials of a lithium battery

Abstract

The present invention relates to the technical field of sintering furnaces, and discloses a sintering furnace for lithium battery positive and negative electrode materials, which includes a sintering furnace main body. The sintering furnace main body includes a high-temperature furnace body and a cooling furnace body. An air inlet pipe and an air outlet pipe are respectively installed on both sides of the cooling furnace body. A sagger conveyor is installed inside the cooling furnace body, and a clamp driving assembly and a composite clamp are further provided above the sagger conveyor. After the sagger containing the electrode material is initially cooled, through the cooperation of the composite clamp, the clamp driving assembly and the transfer assembly, the electrode material can be flipped and a new sagger can be replaced. After the electrode material is flipped, the cooling efficiency of the upper and lower layers changes, thereby eliminating the temperature difference formed between the upper and lower layers after the initial cooling of the electrode material, making the temperature of the electrode material more uniform after cooling, which is beneficial to reducing stress and improving the quality of the material. Moreover, the new sagger has a lower temperature than the old sagger, which is beneficial to heat conduction and also improves the efficiency and effect of subsequent cooling.

Description

Technical Field

[0001] The present invention relates to the technical field of sintering furnaces, and particularly to a sintering furnace for positive and negative electrode materials of lithium batteries. Background Art

[0002] The sintering of the positive and negative electrode materials of a battery is a process of producing a dense solid material by the grain growth and combination of raw materials in powder form under the action of thermal pressure. In the preparation of battery electrode materials, the sintering process is mainly used to improve the density of the material, and to regulate the microstructure and grain size of the material, so as to improve the electrochemical performance of the material. At present, it is mainly carried out by a sintering furnace. During operation, different temperature zones are provided inside the sintering furnace. The electrode material is pressed and loaded into a crucible, and the crucible is transported into the sintering furnace for sintering. After sintering, it also passes through the cooling zone in the sintering furnace for cooling, and finally is output and the raw materials in the crucible are poured out by a manipulator. However, the existing sintering furnace has certain deficiencies: At present, gas cooling is often used in the sintering furnace, that is, heat exchange is achieved through a low-temperature air flow. The main structure is the intake pipe and exhaust pipe arranged on both sides of the crucible conveyor. However, since the top of the material located in the crucible is exposed, while the bottom is located inside the crucible, the cooling efficiency of the top and bottom of the material varies greatly, the cooling is uneven, the stress in the material is large, and the material performance deteriorates. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a sintering furnace for positive and negative electrode materials of lithium batteries, which has the advantages of improving the cooling uniformity after sintering of the electrode material and improving the material performance, and solves the problem that the battery material needs to be placed in a crucible during sintering, but the presence of the crucible affects the cooling efficiency during cooling, resulting in uneven cooling of the upper and lower layers of the material and thus deterioration of the material performance.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A sintering furnace for positive and negative electrode materials of lithium batteries, including a sintering furnace main body, the sintering furnace main body includes a high-temperature furnace body and a cooling furnace body, an air inlet pipe and an exhaust pipe are respectively installed on both sides of the cooling furnace body, a crucible conveyor is installed inside the cooling furnace body, a fixture driving assembly and a fixture assembly are further provided above the crucible conveyor, a through groove is opened at the top of the cooling furnace body, a transfer assembly is installed above the through groove, and a circulating conveyor is fixed at the top of the cooling furnace body;

[0005] The fixture assembly includes two lower clamping jaws and two upper clamping jaws, and the fixture assembly is used for positioning and clamping the crucible;

[0006] The circulating conveyor passes by the through groove, and the circulating conveyor is used for placing and circulatingly transporting empty crucibles;

[0007] The transfer assembly includes a suction cup capable of moving between the circulating conveyor and the sagger conveyor, and the transfer assembly is used for transferring empty saggers;

[0008] The fixture driving assembly is installed on the top wall of the cooling furnace body and is in transmission connection with the fixture assembly. The fixture driving assembly is used for driving the fixture assembly to rotate and move vertically;

[0009] After the loaded sagger is preliminarily cooled in the cooling furnace body, the fixture driving assembly operates to force the fixture assembly to position and clamp the loaded sagger. Then the transfer assembly operates, and the empty sagger on the circulating conveyor is transferred and buckled on the loaded sagger through the suction cup. The fixture driving assembly operates again to clamp the empty sagger, and the fixture assembly, the loaded sagger and the empty sagger are flipped to force the raw materials to be poured into the empty sagger. Finally, the empty sagger filled with the inverted raw materials is subjected to secondary cooling, and the loaded sagger is adsorbed by the transfer assembly after being emptied and transferred to the circulating conveyor.

[0010] Preferably, multiple air inlet pipes are provided and evenly installed on the side wall of the cooling furnace body. The air inlet pipe includes an input pipe, and a plurality of input branch pipes are fixedly connected to the end of the input pipe. The input branch pipes are inserted into the interior of the cooling furnace body and fixed to the side wall of the cooling furnace body.

[0011] Preferably, multiple air outlet pipes are provided and evenly installed on the side wall of the cooling furnace body. The air outlet pipe includes an output pipe, and a plurality of output branch pipes are fixedly connected to the end of the output pipe. The output branch pipes are inserted into the interior of the cooling furnace body and fixedly connected to the side wall of the cooling furnace body.

[0012] Preferably, the fixture assembly further includes a substrate, which is vertically distributed with the sagger conveyor. The surface of the substrate is provided with an upper sliding groove and a lower sliding groove, both of which are horizontally arranged. A lower bidirectional screw is rotatably connected in the lower sliding groove, and two symmetrically distributed lower nut sleeves are threadedly connected to the lower bidirectional screw. The two lower clamping jaws are respectively fixed to the two lower nut sleeves. One end of the lower bidirectional screw extends to the edge of the substrate and is fixed with a lower gear. An upper bidirectional screw is rotatably connected in the upper sliding groove, and two symmetrically distributed upper nut sleeves are threadedly connected to the upper bidirectional screw. The two upper clamping jaws are respectively fixed to the two upper nut sleeves. One end of the upper bidirectional screw extends to the edge of the substrate and is fixed with an upper gear.

[0013] Preferably, the fixture assembly further includes a support plate fixed to the edge of the substrate. The support plate is vertically distributed with respect to the substrate. A driving motor is fixed on the surface of the support plate. The output shaft of the driving motor is fixedly connected to a driving screw. The driving screw is installed on the surface of the support plate through a bearing seat. A nut seat is threadedly connected to the driving screw. A movable plate is fixedly connected to the nut seat. The movable plate is slidably connected to the surface of the support plate. First and second racks are respectively fixedly connected to the upper and lower edges of the support plate. The first rack is matched with the position of the lower gear, and the second rack is matched with the position of the upper gear.

[0014] Preferably, the transfer assembly includes a slide table horizontally arranged above the cooling furnace body. The slide table passes above the circulating conveyor. Brackets are fixedly connected to both ends of the slide table. The brackets are fixed to the side wall of the cooling furnace body. A slide seat is installed on the slide table. A first vertical cylinder is fixedly connected to the slide seat. The output end of the first vertical cylinder faces downward and is fixedly connected to a mounting plate. A plurality of suction cups are arranged and fixed on the mounting plate.

[0015] Preferably, the fixture driving assembly includes a second vertical cylinder fixed to the top of the cooling furnace body. The output end of the second vertical cylinder extends into the cooling furnace body and is fixedly connected to a mounting frame. An adjustment motor is fixedly connected to the mounting frame. The output end of the adjustment motor is fixedly connected to the side wall of the substrate.

[0016] Preferably, a plurality of vertically arranged guide rods are fixedly connected to the top of the mounting frame. The guide rods are movably inserted into the top wall of the cooling furnace body.

[0017] Preferably, the end of the output pipe is fixedly connected to a lead-out pipe. A blower is installed on the lead-out pipe. One end of the lead-out pipe extends above the circulating conveyor and is fixedly connected to a wind guide funnel.

[0018] Preferably, a bent frame is fixedly connected to the edge of the circulating conveyor. A temperature measuring sensor is fixedly connected to the bent frame. The temperature measuring sensor faces the surface of the circulating conveyor. A distribution pipe is also fixedly connected to the input pipe. An electromagnetic valve is installed on the distribution pipe. One end of the distribution pipe extends above the circulating conveyor and is fixedly connected to a air supply funnel.

[0019] Compared with the prior art, the present invention provides a sintering furnace for lithium battery positive and negative materials, having the following beneficial effects:

[0020] 1. The sintering furnace for the positive and negative electrode materials of this lithium battery can, after the crucible containing the electrode materials is preliminarily cooled, flip the electrode materials in the crucible and replace them with new crucibles through the cooperation of the crucible conveyor, the circulating conveyor, the fixture assembly, the fixture driving assembly, the through groove and the transfer assembly. After the electrode materials are flipped, the cooling efficiency of the upper and lower layers changes, thereby eliminating the temperature difference formed between the upper and lower layers after the preliminary cooling of the electrode materials, making the temperature of the electrode materials more uniform after cooling, which is beneficial to reducing stress and improving the quality of the materials. Moreover, the new crucible has a lower temperature than the old crucible, which is beneficial to heat conduction and also improves the efficiency and effect of subsequent cooling.

[0021] 2. The sintering furnace for the positive and negative electrode materials of this lithium battery can reapply the cooling air flow with a lower temperature by setting the outlet pipe, the blower and the air guiding funnel, and discharge it onto the circulating conveyor, which is beneficial to cooling the replaced crucibles, improving the energy utilization rate. After the crucibles are cooled, they can be reused to replace the hot crucibles in the cooling furnace, and can further improve the efficiency of the secondary cooling of the electrode materials.

[0022] 3. The sintering furnace for the positive and negative electrode materials of this lithium battery can, when the cooling effect of the crucibles on the conveyor is insufficient, also convey the air flow with a lower temperature to the circulating conveyor to further cool the crucibles, improving the cooling effect on the crucibles on the circulating conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic perspective structure of a sintering furnace for the positive and negative electrode materials of a lithium battery according to the present invention Figure 1 ;

[0024] Figure 2 Schematic perspective structure of a sintering furnace for the positive and negative electrode materials of a lithium battery according to the present invention Figure 2 ;

[0025] Figure 3 Schematic structural diagram of the cooling furnace body according to the present invention;

[0026] Figure 4 According to the present invention Figure 3 Enlarged view of part A;

[0027] Figure 5 Schematic structural diagram of the transfer assembly according to the present invention;

[0028] Figure 6 Schematic structural diagram of the fixture assembly according to the present invention;

[0029] Figure 7 Schematic structural diagram of the fixture driving assembly according to the present invention;

[0030] Figure 8 This is a working schematic diagram of the circulating conveyor of the present invention.

[0031] In the figure: 1. Sintering furnace main body; 101. High-temperature furnace body; 102. Cooling furnace body; 103. Sagger conveyor; 104. Through slot; 2. Air inlet pipe; 21. Input pipe; 22. Input branch pipe; 3. Exhaust pipe; 31. Output pipe; 32. Output branch pipe; 4. Clamp driving assembly; 41. Second vertical cylinder; 42. Mounting frame; 43. Adjusting motor; 44. Guide rod; 5. Clamp assembly; 501. Lower jaw; 502. Upper jaw; 503. Substrate; 504. Upper chute; 505. Lower chute; 506. Lower double-threaded screw; 507. Lower nut sleeve; 508. Lower gear; 509. Upper double-threaded screw; 510. Upper nut sleeve; 511. Upper gear; 512. Support plate; 513. Driving motor; 514. Driving screw; 515. Bearing seat; 516. Nut seat; 517. Movable plate; 518. First rack; 519. Second rack; 6. Transfer assembly; 61. Suction cup; 62. Slide table; 63. Support; 64. Slide seat; 65. First vertical cylinder; 66. Mounting plate; 7. Circulating conveyor; 8. Outlet pipe; 9. Fan; 10. Air guide funnel; 11. Bent frame; 12. Temperature measuring sensor; 13. Distribution pipe; 14. Solenoid valve; 15. Air supply funnel. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a sintering furnace for lithium battery positive and negative electrode materials.

[0034] Embodiment 1: Please refer to Figures 1-4 , a sintering furnace for lithium battery positive and negative electrode materials, including a sintering furnace main body 1, the sintering furnace main body 1 includes a high-temperature furnace body 101 and a cooling furnace body 102, the cooling furnace body 102 is respectively provided with an air inlet pipe 2 and an exhaust pipe 3 on both sides, a sagger conveyor 103 is installed inside the cooling furnace body 102, a clamp driving assembly 4 and a clamp assembly 5 are further provided above the sagger conveyor 103, a through slot 104 is opened at the top of the cooling furnace body 102, a transfer assembly 6 is installed above the through slot 104, and a circulating conveyor 7 is fixed at the top of the cooling furnace body 102;

[0035] The fixture assembly 5 includes two lower jaws 501 and two upper jaws 502, and the fixture assembly 5 is used for positioning and clamping the sagger.

[0036] The circulating conveyor 7 passes by the through slot 104, and the circulating conveyor 7 is used for placing and circulatingly transporting empty saggers.

[0037] The transfer assembly 6 includes a suction cup 61 that can move between the circulating conveyor 7 and the sagger conveyor 103, and the transfer assembly 6 is used for transferring empty saggers.

[0038] The fixture driving assembly 4 is installed on the top wall of the cooling furnace body 102 and is in transmission connection with the fixture assembly 5, and the fixture driving assembly 4 is used for driving the fixture assembly 5 to rotate and move vertically.

[0039] After the loaded sagger is preliminarily cooled in the cooling furnace body 102, the fixture driving assembly 4 operates to force the fixture assembly 5 to position and clamp the loaded sagger. Then the transfer assembly 6 operates, and the empty sagger on the circulating conveyor 7 is transferred and buckled on the loaded sagger through the suction cup 61. The fixture driving assembly 4 operates again to clamp the empty sagger, and the fixture assembly 5, the loaded sagger and the empty sagger are flipped to force the raw material to be poured into the empty sagger. Finally, the empty sagger filled with the inverted raw material is subjected to secondary cooling, and the loaded sagger after being emptied is adsorbed by the transfer assembly 6 and transferred to the circulating conveyor 7.

[0040] Among them, the sagger containing the electrode material inside first undergoes sintering in the high-temperature furnace body 101, and then undergoes cooling in the cooling furnace body 102. During the cooling process, the sagger is slowly transported on the sagger conveyor 103. The structure of the circulating conveyor 7 is prior art and will not be described in detail. The projection of the through slot 104 in the vertical direction is just located inside the fixture assembly 5. In practical applications, a number of empty saggers are pre-placed on the circulating conveyor 7, and the saggers are inverted. Both the air inlet pipe 2 and the air outlet pipe 3 are connected to the air flow control system of the sintering furnace.

[0041] During use, the air inlet pipe 2 inputs low-temperature air flow into the cooling furnace body 102. The low-temperature air flow passes through the sagger conveyor 103 and is then discharged through the exhaust pipe 3. The saggers move on the sagger conveyor 103 and are initially cooled. Then, the clamp driving assembly 4 is started. The clamp driving assembly 4 drives the clamp assembly 5 to move downward to the surface of the sagger conveyor 103. The moving loaded saggers cannot move when they come into contact with the clamp assembly 5. Then, the clamp assembly 5 operates, forcing the two lower jaws 501 to move, positioning and clamping the loaded saggers within the clamp assembly 5. Then, the transfer assembly 6 operates. The transfer assembly 6 adsorbs the empty saggers on the circulating conveyor 7 through the suction cups 61, and then places the empty saggers into the cooling furnace body 102 through the through slot 104 and just buckles them onto the loaded saggers. After that, the clamp assembly 5 is started, forcing the two upper jaws 502 to move and clamp the empty saggers. Subsequently, the clamp driving assembly 4 operates again, driving the clamp assembly 5 to move upward and then rotate 180 degrees, and then move downward again, thereby forcing the positions of the empty saggers and the loaded saggers to be swapped. The electrode material in the loaded saggers is also poured into the empty saggers during the rotation process. After that, the empty saggers carrying the electrode material continue to move on the sagger conveyor 103 and are subjected to subsequent cooling;

[0042] By providing the sagger conveyor 103, the circulating conveyor 7, the clamp assembly 5, the clamp driving assembly 4, the through slot 104, and the transfer assembly 6, after the saggers containing the electrode material are initially cooled, the electrode material in the saggers can be flipped and new saggers can be replaced through the cooperation of the clamp assembly 5, the clamp driving assembly 4, and the transfer assembly 6. After the electrode material is flipped, the cooling efficiency of the upper and lower layers changes, thereby eliminating the temperature difference formed between the upper and lower layers after the initial cooling of the electrode material, making the temperature of the electrode material more uniform after cooling, which is beneficial to reducing stress and improving the quality of the material. The new saggers are cooler than the old saggers, which is beneficial to heat conduction and also improves the efficiency and effect of subsequent cooling.

[0043] Embodiment 2: Refer to Figures 1-3 and Figure 8 , different from the above embodiment, a plurality of groups of the air inlet pipes 2 are provided and are evenly installed on the side wall of the cooling furnace body 102. The air inlet pipe 2 includes an input pipe 21. A plurality of input branch pipes 22 are fixedly connected to the end of the input pipe 21. The input branch pipes 22 are inserted into the cooling furnace body 102 and are fixedly connected to the side wall of the cooling furnace body 102. A plurality of groups of the exhaust pipes 3 are provided and are evenly installed on the side wall of the cooling furnace body 102. The exhaust pipe 3 includes an output pipe 31. A plurality of output branch pipes 32 are fixedly connected to the end of the output pipe 31. The output branch pipes 32 are inserted into the cooling furnace body 102 and are fixedly connected to the side wall of the cooling furnace body 102;

[0044] Among them, multiple groups of air inlet pipes 2 and exhaust pipes 3 are distributed in a linear array. Cold air flows into the interior of the cooling furnace body 102 through the input pipe 21 and the input branch pipe 22, passes through the sagger conveyor 103, and then is discharged through the output branch pipe 32 and the output pipe 31, thereby realizing heat exchange, which is beneficial to cooling the sagger and the internal electrode material.

[0045] Embodiment 3. Refer to Figure 6 , different from the above embodiment, the fixture assembly 5 further includes a substrate 503, the substrate 503 is vertically distributed with the sagger conveyor 103, the surface of the substrate 503 is provided with an upper sliding groove 504 and a lower sliding groove 505, both the upper sliding groove 504 and the lower sliding groove 505 are horizontally arranged, a lower bidirectional screw 506 is rotatably connected in the lower sliding groove 505, two symmetrically distributed lower nut sleeves 507 are threadedly connected to the lower bidirectional screw 506, the two lower clamping jaws 501 are respectively fixed to the two lower nut sleeves 507, one end of the lower bidirectional screw 506 extends to the edge of the substrate 503 and is fixed with a lower gear 508, an upper bidirectional screw 509 is rotatably connected in the upper sliding groove 504, two symmetrically distributed upper nut sleeves 510 are threadedly connected to the upper bidirectional screw 509, the two upper clamping jaws 502 are respectively fixed to the two upper nut sleeves 510, one end of the upper bidirectional screw 509 extends to the edge of the substrate 503 and is fixed with an upper gear 511, the fixture assembly 5 further includes a support plate 512 fixed to the edge of the substrate 503, the support plate 512 is vertically distributed with the substrate 503, a driving motor 513 is fixed to the surface of the support plate 512, the output shaft of the driving motor 513 is fixedly connected with a driving screw 514, the driving screw 514 is installed on the surface of the support plate 512 through a bearing seat 515, a nut seat 516 is threadedly connected to the driving screw 514, a movable plate 517 is fixedly connected to the nut seat 516, the movable plate 517 is slidably connected to the surface of the support plate 512, the upper and lower edges of the support plate 512 are respectively fixedly connected with a first rack 518 and a second rack 519, the first rack 518 is matched with the position of the lower gear 508, and the second rack 519 is matched with the position of the upper gear 511.

[0046] Among them, two groups of symmetric and oppositely rotating threads are arranged on the surface of the upper bidirectional screw 509, the two upper nut sleeves 510 are respectively matched with the two groups of threads, two groups of symmetric and oppositely rotating threads are also arranged on the surface of the lower bidirectional screw 506, the two lower nut sleeves 507 are respectively matched with the two groups of threads, the sliding direction of the movable plate 517 is the same as the direction of the driving screw 514, the positions of the first rack 518 and the second rack 519 are staggered, and the distance from the first rack 518 to the lower gear 508 is less than the distance from the second rack 519 to the upper gear 511 in the initial state;

[0047] In use, when the fixture assembly 5 moves onto the sagger conveyor 103 under the action of the fixture drive assembly 4, the loaded sagger contacts the substrate 503 and is blocked by the substrate 503. At this time, the loaded sagger is just located between the two lower jaws 501. Start the drive motor 513. The operation of the drive motor 513 drives the drive screw 514 to rotate. When the drive screw 514 rotates, the drive nut seat 516 and the movable plate 517 slide. When the movable plate 517 slides, it drives the first rack 518 and the second rack 519 to move. The first rack 518 first contacts the lower gear 508 and drives the lower gear 508 to rotate. When the lower gear 508 rotates, it drives the lower bidirectional screw 506 to rotate. When the lower bidirectional screw 506 rotates, it drives the two lower nut sleeves 507 to approach each other, and then drives the two lower jaws 501 to approach each other. The two lower jaws 501 push the sagger and finally clamp the loaded sagger. When the transfer assembly 6 buckles the empty sagger onto the loaded sagger, the drive motor 513 operates again. At this time, the first rack 518 just completely disengages from the lower gear 508, and the second rack 519 contacts and drives the upper gear 511 to rotate. When the upper gear 511 rotates, it drives the upper bidirectional screw 509 to rotate. When the upper bidirectional screw 509 rotates, it drives the two upper nut sleeves 510 to approach each other, and then drives the two upper jaws 502 to approach each other. The two upper jaws 502 clamp the empty sagger. When the fixture assembly 5 rotates 180 degrees, control the drive motor 513 to operate, which can drive the upper bidirectional screw 509 and the lower bidirectional screw 506 to rotate in sequence. Since the upper bidirectional screw 509 is switched to the lower side after rotating 180 degrees at this time, it will first drive the two upper jaws 502 to move and release the empty sagger;

[0048] By setting the fixture assembly 5, starting the drive motor 513 can drive the lower jaws 501 and the upper jaws 502 to move, thereby realizing the positioning, clamping and releasing of the loaded sagger and the empty sagger, which facilitates the inversion of the electrode material and the replacement of the sagger.

[0049] Embodiment 4, refer to Figure 5 , different from the above embodiment, the transfer assembly 6 includes a sliding table 62 horizontally arranged above the cooling furnace body 102. The sliding table 62 passes above the circulating conveyor 7. Both ends of the sliding table 62 are fixedly connected with brackets 63. The brackets 63 are fixedly connected with the side wall of the cooling furnace body 102. A sliding seat 64 is installed on the sliding table 62. A first vertical cylinder 65 is fixedly connected to the sliding seat 64. The output end of the first vertical cylinder 65 faces downward and is fixedly connected with a mounting plate 66. The suction cups 61 are provided in plurality and are fixed on the mounting plate 66.

[0050] Among them, the structures of the sliding table 62 and the sliding seat 64 are both prior arts. The sliding table 62 is horizontally arranged, and the mounting plate 66 is arranged as a horizontal plate. During use, the sliding table 62 operates to drive the sliding seat 64 to move. The movement of the sliding seat 64 drives the first vertical cylinder 65 and the mounting plate 66 to move onto the circulating conveyor 7. The empty cassettes are adsorbed by the suction cups 61, and then the empty cassettes are moved above the through groove 104. Then, the first vertical cylinder 65 is started. After the first vertical cylinder 65 extends, it drives the mounting plate 66, the suction cups 61, and the empty cassettes to move downward, just buckling on the loaded cassettes. When the loaded cassettes are flipped 180 degrees along with the fixture assembly 5, the loaded cassettes are adsorbed by the suction cups 61. By starting the first vertical cylinder 65 and the sliding table 62 again, the empty loaded cassettes at this time can be moved onto the circulating conveyor 7.

[0051] Embodiment Five. Refer to Figure 7 , different from the above embodiment, the fixture driving assembly 4 includes a second vertical cylinder 41 fixed to the top of the cooling furnace body 102. The output end of the second vertical cylinder 41 extends into the cooling furnace body 102 and is fixedly connected with a mounting frame 42. A regulating motor 43 is fixedly connected to the mounting frame 42. The output end of the regulating motor 43 is fixedly connected to the side wall of the substrate 503. A plurality of vertically arranged guide rods 44 are fixedly connected to the top of the mounting frame 42. The guide rods 44 are movably inserted into the top wall of the cooling furnace body 102.

[0052] Among them, a plurality of linear bearings are fixed on the top wall of the cooling furnace body 102. The linear bearings are sleeved on the guide rods 44 to reduce the friction force. During use, the telescopic movement of the second cylinder can drive the mounting frame 42 to move vertically, and then drive the regulating motor 43 and the fixture assembly 5 as a whole to move vertically. When the regulating motor 43 operates, it drives the substrate 503 to rotate, and then drives the entire fixture assembly 5 to rotate, which is beneficial to driving the clamped loaded cassettes and empty cassettes to exchange positions, and also enables the electrode materials in the loaded cassettes to fall into the empty cassettes during the rotation process.

[0053] Embodiment Six. Refer to Figure 8 , different from the above embodiment, the end of the output pipe 31 is fixedly connected with a lead-out pipe 8. A blower 9 is installed on the lead-out pipe 8. One end of the lead-out pipe 8 extends above the circulating conveyor 7 and is fixedly connected with a wind guide funnel 10. A bent frame 11 is fixedly connected to the edge of the circulating conveyor 7. A temperature measuring sensor 12 is fixedly connected to the bent frame 11. The temperature measuring sensor 12 faces the surface of the circulating conveyor 7. A distribution pipe 13 is also fixedly connected to the input pipe 21. A solenoid valve 14 is installed on the distribution pipe 13. One end of the distribution pipe 13 extends above the circulating conveyor 7 and is fixedly connected with a wind supply funnel 15.

[0054] Among them, the outlet pipe 8 is connected to one of the multiple output pipes 31 near the discharge port of the sintering furnace. Since the sintering furnace near the discharge port has been cooled to a relatively low temperature, the temperature of the gas flow discharged from the output pipe 31 near the discharge port is relatively low.

[0055] During use, the fan 9 is started. The fan 9 sucks the gas flow in the output pipe 31 into the outlet pipe 8, and then discharges it to the surface of the circulating conveyor 7 through the air guiding funnel 10 to cool the replaced crucibles on the circulating conveyor 7. The cooled crucibles are then transported below the temperature measuring sensor 12. The temperature measuring sensor 12 monitors the temperature of the crucibles. If the crucibles are still at a relatively high temperature, the solenoid valve 14 is controlled to operate and open. At this time, the cold gas flow in the input pipe 21 is discharged through the distribution pipe 13 and the air supply funnel 15 to cool the crucibles on the circulating conveyor 7 again.

[0056] By providing the outlet pipe 8, the fan 9 and the air guiding funnel 10, the relatively low-temperature cooling gas flow can be applied for a second time and discharged onto the circulating conveyor 7, which is beneficial to cooling the replaced crucibles, improving the energy utilization rate. After the crucibles are cooled, they can be reused to replace the hot crucibles in the cooling furnace, and can further improve the efficiency of secondary cooling of the electrode material. By providing the temperature measuring sensor 12, the solenoid valve 14, the distribution pipe 13 and the air supply funnel 15, when the cooling effect of the crucibles on the conveyor is insufficient, a gas flow with a lower temperature can be transported onto the circulating conveyor 7 to further cool the crucibles, improving the cooling effect on the crucibles on the circulating conveyor 7.

[0057] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery positive and negative electrode material sintering furnace, characterized in that: It includes a sintering furnace body, which includes a high-temperature furnace body and a cooling furnace body. Air inlet pipes and exhaust pipes are respectively installed on both sides of the cooling furnace body. A sagger conveyor is installed inside the cooling furnace body. A fixture driving component and a fixture component are also arranged above the sagger conveyor. A through slot is opened on the top of the cooling furnace body. A transfer component is installed above the through slot. A circulating conveyor is fixed on the top of the cooling furnace body. The clamp assembly includes two lower clamps and two upper clamps, and the clamp assembly is used to position and clamp the sagger; the circulating conveyor passes by the through slot, and the circulating conveyor is used to place and circulate the empty sagger; the transfer assembly includes a suction cup that moves between the circulating conveyor and the sagger conveyor, and the transfer assembly is used to transfer the empty sagger; the clamp drive assembly is installed on the top wall of the cooling furnace body and is connected to the clamp assembly in transmission, and the clamp drive assembly is used to drive the clamp assembly to rotate and move vertically; After the load sagger is initially cooled in the cooling furnace, the fixture driving assembly operates to position and clamp the load sagger by the fixture assembly, and then the transfer assembly operates to transfer the empty sagger on the circulating conveyor through the suction cup and buckle it on the load sagger. The fixture driving assembly operates again to clamp the empty sagger, and flips the fixture assembly, the load sagger and the empty sagger to force the raw materials to pour into the empty sagger. Finally, the empty sagger contains the inverted raw materials for secondary cooling. After the load sagger is empty, it is adsorbed by the transfer assembly and transferred to the circulating conveyor. The air inlet pipe is arranged in multiple groups and is evenly installed on the side wall of the cooling furnace body. The air inlet pipe includes an input pipe, and multiple input branch pipes are fixedly connected to the end of the input pipe. The input branch pipes are plugged into the interior of the cooling furnace body and fixed to the side wall of the cooling furnace body; the exhaust pipe is arranged in multiple groups and is evenly installed on the side wall of the cooling furnace body. The exhaust pipe includes an output pipe, and multiple output branch pipes are fixedly connected to the end of the output pipe. The output branch pipes are plugged into the interior of the cooling furnace body and fixedly connected to the side wall of the cooling furnace body; the multiple groups of air inlet pipes and exhaust pipes are distributed in a linear array, and the cold air flows through the input pipe and the input branch pipe into the interior of the cooling furnace body, passes through the sagger conveyor, and then is discharged through the output branch pipe and the output pipe to realize heat exchange; The end of the output pipe is fixedly connected with an outlet pipe, a fan is installed on the outlet pipe, one end of the outlet pipe extends to the top of the circulating conveyor and is fixedly connected with an air guide funnel.

2. A lithium battery positive and negative electrode material sintering furnace according to claim 1, characterized in that: The clamp assembly also includes a base plate, which is vertically distributed to the sagger conveyor, and an upper slide groove and a lower slide groove are arranged on the surface of the base plate, and the upper slide groove and the lower slide groove are both arranged horizontally. A lower bidirectional screw is rotatably connected in the lower slide groove, and two symmetrically distributed lower nut sleeves are threadedly connected to the lower bidirectional screw, and two lower clamping jaws are respectively fixed to the two lower nut sleeves, one end of the lower bidirectional screw extends to the edge of the base plate and is fixed with a lower gear, and an upper bidirectional screw is rotatably connected in the upper slide groove, and two symmetrically distributed upper nut sleeves are threadedly connected to the upper bidirectional screw, and two upper clamping jaws are respectively fixed to the two upper nut sleeves, and one end of the upper bidirectional screw extends to the edge of the base plate and is fixed with an upper gear.

3. A lithium battery positive and negative electrode material sintering furnace according to claim 2, characterized in that: The clamp assembly also includes a support plate fixed on the edge of the base plate, the support plate is distributed vertically to the base plate, a driving motor is fixed on the surface of the support plate, a driving screw is fixedly connected to the output shaft of the driving motor, the driving screw is installed on the surface of the support plate through a bearing seat, a nut seat is threadedly connected to the driving screw, a movable plate is fixedly connected to the nut seat, the movable plate is slidably connected to the surface of the support plate, and a first rack and a second rack are fixedly connected to the upper and lower edges of the support plate respectively, the first rack matches the position of the lower gear, and the second rack matches the position of the upper gear.

4. A lithium battery positive and negative electrode material sintering furnace according to claim 3, characterized in that: The transfer assembly includes a slide arranged horizontally above the cooling furnace body. The slide passes above the circulating conveyor. Both ends of the slide are fixedly connected with brackets. The brackets are fixed to the side walls of the cooling furnace body. A slide seat is installed on the slide. A first vertical cylinder is fixedly connected to the slide seat. The output end of the first vertical cylinder faces downward and is fixedly connected to a mounting plate. A plurality of suction cups are provided and fixed on the mounting plate.

5. A lithium battery positive and negative electrode material sintering furnace according to claim 4, characterized in that: The fixture driving assembly includes a second vertical cylinder fixed on the top of the cooling furnace body, the output end of the second vertical cylinder extends into the cooling furnace body and is fixedly connected to a mounting frame, an adjusting motor is fixedly connected to the mounting frame, and the output end of the adjusting motor is fixedly connected to the side wall of the substrate.

6. A lithium battery positive and negative electrode material sintering furnace according to claim 5, characterized in that: A plurality of vertically arranged guide rods are fixedly connected to the top of the mounting frame, and the guide rods are movably plugged into the top wall of the cooling furnace body.

7. A lithium battery positive and negative electrode material sintering furnace according to claim 6, characterized in that: A bent frame is fixedly connected to the edge of the circulating conveyor, and a temperature sensor is fixedly connected to the bent frame. The temperature sensor faces the surface of the circulating conveyor. A distribution pipe is also fixedly connected to the input pipe, and a solenoid valve is installed on the distribution pipe. One end of the distribution pipe extends to the top of the circulating conveyor and is fixedly connected to an air supply funnel.

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