Lithium battery anode and cathode material sintering furnace

Abstract

The invention relates to the technical field of sintering furnaces, and discloses a lithium battery anode and cathode material sintering furnace which comprises a sintering furnace body, the sintering furnace body comprises a high-temperature furnace body and a cooling furnace body, an air inlet pipe and an exhaust pipe are installed on the two sides of the cooling furnace body respectively, and a sagger conveyor is installed in the cooling furnace body. A clamp driving assembly and a composite clamp are further arranged above the sagger conveyor. After the sagger filled with the electrode material is primarily cooled, the electrode material can be turned over and replaced with a new sagger through cooperation of the composite clamp, the clamp driving assembly and the transfer assembly, the cooling efficiency of the upper layer and the lower layer is changed after the electrode material is turned over, and then the temperature difference formed by the upper layer and the lower layer after the electrode material is primarily cooled is eliminated; the temperature of the cooled electrode material is more uniform, stress is reduced, the quality of the material is improved, the temperature of a new sagger is lower than that of an old sagger, heat conduction is facilitated, and the subsequent cooling efficiency and the cooling effect are further improved.

Description

Technical Field

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

[0002] The sintering of positive and negative electrode materials of batteries is a process of producing dense solid materials by growing and combining powdered raw materials under the action of heat and pressure. In the preparation of battery electrode materials, the sintering process is mainly used to improve the density of the material and regulate the microstructure and grain size of the material, so as to improve the electrochemical properties of the material. At present, it is mainly carried out in a sintering furnace. During operation, different temperature zones are arranged inside the sintering furnace. The electrode material is pressed and loaded in a sagger. The sagger is transferred to the sintering furnace for sintering. After sintering, it is cooled in the cooling zone in the sintering furnace. Finally, the raw materials in the sagger are output and poured out by a manipulator. However, the existing sintering furnace has certain shortcomings: gas cooling is often used in the current sintering furnace, that is, heat exchange is achieved through low-temperature airflow. The main structure is an air inlet pipe and an exhaust pipe arranged on both sides of the sagger conveyor. However, since the top of the material in the sagger is exposed and the bottom is located in the sagger, the cooling efficiency of the top and bottom of the material is quite different, the cooling is uneven, the stress in the material is large, and the material performance is deteriorated. Summary of the invention

[0003] In view of the shortcomings 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 of electrode materials after sintering and improving material performance. It solves the problem that battery materials need to be placed in a sagger during sintering, but the presence of the sagger affects the cooling efficiency during cooling, resulting in uneven cooling of the upper and lower layers of the material, which in turn leads to deterioration of material performance.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a lithium battery positive and negative electrode material sintering furnace, comprising a sintering furnace body, the sintering furnace body comprising 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 composite fixture 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, and a circulating conveyor is fixed on the top of the cooling furnace body; The composite clamp comprises two lower clamps and two upper clamps, and the composite clamp 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 saggers; The transfer assembly comprises a suction cup capable of moving between the circulating conveyor and the sagger conveyor, and the transfer assembly is used for transferring the empty sagger; The fixture driving assembly is installed on the top wall of the cooling furnace body and is transmission-connected to the composite fixture, and the fixture driving assembly is used to drive the composite fixture to rotate and move vertically; After the load sagger is initially cooled in the cooling furnace, the fixture driving assembly operates to force the composite fixture to position and clamp the load sagger, 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 flip the composite fixture, the load sagger and the empty sagger to force the raw materials to pour into the empty sagger. Finally, the empty sagger is loaded with 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.

[0005] Preferably, the air inlet pipes are arranged in multiple groups and are evenly installed on the side wall of the cooling furnace body, the air inlet pipes include input pipes, the ends of the input pipes are fixedly connected with multiple input branch pipes, 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.

[0006] Preferably, the exhaust duct is arranged in multiple groups and evenly installed on the side wall of the cooling furnace body, the exhaust duct includes an output pipe, the end of the output pipe is fixedly connected to a plurality of output branch pipes, 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.

[0007] Preferably, the composite clamp also includes a base plate, the base plate is vertically distributed to the sagger conveyor, the surface of the base plate is provided with an upper slide groove and a lower slide groove, the upper slide groove and the lower slide groove are both horizontally arranged, a lower bidirectional screw is rotatably connected in the lower slide groove, two symmetrically distributed lower nut sleeves are threadedly connected on the lower bidirectional screw, the two lower 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, an upper bidirectional screw is rotatably connected in the upper slide groove, two symmetrically distributed upper nut sleeves are threadedly connected on the upper bidirectional screw, the two upper jaws are respectively fixed to the two upper nut sleeves, one end of the upper bidirectional screw extends to the edge of the base plate and is fixed with an upper gear.

[0008] Preferably, the composite clamp 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 to 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, the upper and lower side edges of the support plate are respectively fixedly connected to a first rack and a second rack, the first rack matches the position of the lower gear, and the second rack matches the position of the upper gear.

[0009] Preferably, 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, and the suction cup is provided in plurality and fixed on the mounting plate.

[0010] Preferably, the clamp 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 interior of 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.

[0011] Preferably, 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.

[0012] Preferably, the end of the output pipe is fixedly connected to a guide pipe, a fan is installed on the guide pipe, and one end of the guide pipe extends above the circulating conveyor and is fixedly connected to an air guide funnel.

[0013] Preferably, a bent frame is fixedly connected to the edge of the circulating conveyor, a temperature sensor is fixedly connected to the bent frame, the temperature sensor faces the surface of the circulating conveyor, the input pipe is also fixedly connected to a distribution pipe, 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.

[0014] Compared with the prior art, the present invention provides a sintering furnace for positive and negative electrode materials of lithium batteries, which has the following beneficial effects: 1. The lithium battery positive and negative electrode material sintering furnace is provided with a sagger conveyor, a circulating conveyor, a composite clamp, a clamp driving assembly, a through trough and a transfer assembly. After the sagger containing the electrode material is initially cooled, the electrode material in the sagger can be turned over and a new sagger can be replaced by the cooperation of the composite clamp, the clamp driving assembly and the transfer assembly. After the electrode material is turned over, the cooling efficiency of the upper and lower layers is changed, thereby eliminating the temperature difference between the upper and lower layers after the initial cooling of the electrode material, so that the temperature of the electrode material after cooling is more uniform, which is beneficial to reducing stress and improving the quality of the material. The temperature of the new sagger is lower than that of the old sagger, which is beneficial to heat conduction and also improves the efficiency and cooling effect of subsequent cooling.

[0015] 2. This type of lithium battery positive and negative electrode material sintering furnace can make secondary use of the cooling airflow with a lower temperature by setting a guide pipe, a fan and an air guide funnel, and discharge it to a circulating conveyor, which is beneficial to cooling the replaced sagger, improving energy utilization. The sagger can be reused after cooling down, and then used to replace the hot sagger in the cooling furnace, which can further improve the efficiency of secondary cooling of motor materials.

[0016] 3. This type of lithium battery positive and negative electrode material sintering furnace is equipped with a temperature sensor, a solenoid valve, a distribution pipe and an air supply funnel. When the cooling effect of the sagger on the conveyor is insufficient, the air flow with a lower temperature can be delivered to the circulating conveyor to further cool the sagger, thereby improving the cooling effect of the sagger on the circulating conveyor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a lithium battery positive and negative electrode material sintering furnace of the present invention Figure 1 ; Figure 2 A schematic diagram of the three-dimensional structure of a lithium battery positive and negative electrode material sintering furnace of the present invention Figure 2 ; Figure 3 It is a structural schematic diagram of a cooling furnace body of the present invention; Figure 4 For the present invention Figure 3 A magnified view of part A; Figure 5 It is a schematic structural diagram of the transport component of the present invention; Figure 6 It is a schematic structural diagram of the composite clamp of the present invention; Figure 7 It is a structural schematic diagram of the clamp driving assembly of the present invention; Figure 8 It is a working schematic diagram of the circulating conveyor of the present invention.

[0018] In the figure: 1, sintering furnace 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, fixture drive assembly; 41, second vertical cylinder; 42, mounting frame; 43, adjustment motor; 44, guide rod; 5, composite fixture; 501, lower clamp; 502, upper clamp; 503, base plate; 504, upper slide; 505, lower slide; 506, lower bidirectional screw; 507, lower nut sleeve; 508, lower gear; 50 9. Upper bidirectional screw; 510. Upper nut sleeve; 511. Upper gear; 512. Support plate; 513. Drive motor; 514. Drive screw; 515. Bearing seat; 516. Nut seat; 517. Movable plate; 518. First rack; 519. Second rack; 6. Transfer assembly; 61. Suction cup; 62. Slide; 63. Bracket; 64. Slide; 65. First vertical cylinder; 66. Mounting plate; 7. Circulating conveyor; 8. Export pipe; 9. Fan; 10. Air guide funnel; 11. Bending frame; 12. Temperature sensor; 13. Distribution pipe; 14. Solenoid valve; 15. Air supply funnel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0020] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a sintering furnace for positive and negative electrode materials of lithium batteries.

[0021] Example 1: Please refer to Figure 1-Figure 4 A lithium battery positive and negative electrode material sintering furnace, comprising a sintering furnace body 1, the sintering furnace body 1 comprising a high-temperature furnace body 101 and a cooling furnace body 102, air inlet pipes 2 and exhaust pipes 3 are respectively installed on both sides of the cooling furnace body 102, a sagger conveyor 103 is installed inside the cooling furnace body 102, a fixture driving component 4 and a composite fixture 5 are also arranged above the sagger conveyor 103, a through slot 104 is opened on the top of the cooling furnace body 102, a transfer component 6 is installed above the through slot 104, and a circulating conveyor 7 is fixed on the top of the cooling furnace body 102; The composite clamp 5 includes two lower clamping jaws 501 and two upper clamping jaws 502, and the composite clamp 5 is used to position and clamp the sagger; The circulating conveyor 7 passes by the through slot 104, and the circulating conveyor 7 is used to place and circulate the empty saggers; The transfer assembly 6 comprises a suction cup 61 that can move between the circulating conveyor 7 and the sagger conveyor 103, and the transfer assembly 6 is used to transfer the empty sagger; The fixture driving assembly 4 is installed on the top wall of the cooling furnace body 102 and is in transmission connection with the composite fixture 5. The fixture driving assembly 4 is used to drive the composite fixture 5 to rotate and move vertically. After the load sagger is initially cooled in the cooling furnace body 102, the clamp driving component 4 operates to force the composite clamp 5 to position and clamp the load sagger, and then the transfer component 6 operates to transfer the empty sagger on the circulating conveyor 7 through the suction cup 61 and buckle it on the load sagger. The clamp driving component 4 operates again to clamp the empty sagger, and flips the composite clamp 5, the load sagger and the empty sagger to force the raw materials to pour into the empty sagger. Finally, the empty sagger is loaded with the inverted raw materials for secondary cooling. After the load sagger is empty, it is adsorbed by the transfer component 6 and transferred to the circulating conveyor 7.

[0022] The sagger containing the electrode material is first sintered by the high-temperature furnace body 101, and then cooled by 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 the prior art and will not be described in detail. The projection of the through slot 104 in the vertical direction is just located on the inner side of the composite fixture 5. In actual application, a number of empty saggers are pre-placed on the circulating conveyor 7, and the saggers are inverted. The air inlet pipe 2 and the exhaust pipe 3 are connected to the airflow control system of the sintering furnace. When in use, the air inlet pipe 2 inputs low-temperature airflow into the cooling furnace body 102, and the low-temperature airflow passes through the sagger conveyor 103 and is discharged through the exhaust pipe 3. The sagger moves on the sagger conveyor 103 and is initially cooled. Then the clamp driving component 4 is started, and the clamp driving component 4 drives the composite clamp 5 to move down to the surface of the sagger conveyor 103. The moving load sagger cannot move when it contacts the composite clamp 5. Then the composite clamp 5 is operated to force the two lower clamps 501 to move, so as to position and clamp the load sagger in the composite clamp 5. Then the transfer component 6 is operated, and the transfer component 6 sucks the load sagger through the suction cup 61. The empty sagger on the attached circulation conveyor 7 is then placed inside the cooling furnace body 102 through the through slot 104 and just buckled onto the load sagger. Then the composite clamp 5 is started to force the two upper jaws 502 to move and clamp the empty sagger. Then the clamp driving assembly 4 is operated again to drive the composite clamp 5 to move up and then rotate 180 degrees, and then move down again, thereby forcing the empty sagger and the load sagger to exchange positions, and the electrode material in the load sagger is also poured into the empty sagger during the rotation process. Then the empty sagger carrying the electrode material continues to move on the sagger conveyor 103 and is subsequently cooled. By arranging the sagger conveyor 103, the circulating conveyor 7, the composite clamp 5, the clamp driving assembly 4, the through groove 104 and the transfer assembly 6, after the sagger containing the electrode material is initially cooled, the electrode material in the sagger can be turned over and replaced with a new sagger through the cooperation of the composite clamp 5, the clamp driving assembly 4 and the transfer assembly 6. After the electrode material is turned over, the cooling efficiency of the upper and lower layers is changed, thereby eliminating the temperature difference between the upper and lower layers after the initial cooling of the electrode material, so that the temperature of the electrode material after cooling is more uniform, which is beneficial to reducing stress and improving the quality of the material. The temperature of the new sagger is lower than that of the old sagger, which is beneficial to heat conduction and also improves the efficiency and cooling effect of subsequent cooling.

[0023] Example 2: See Figure 1-Figure 3 as well as Figure 8 , which is different from the above embodiment, the air inlet pipe 2 is arranged in multiple groups and is evenly installed on the side wall of the cooling furnace body 102, the air inlet pipe 2 includes an input pipe 21, and the end of the input pipe 21 is fixedly connected with multiple input branch pipes 22, the input branch pipes 22 are plugged into the cooling furnace body 102 and fixed to the side wall of the cooling furnace body 102, the exhaust pipe 3 is arranged in multiple groups and is evenly installed on the side wall of the cooling furnace body 102, the exhaust pipe 3 includes an output pipe 31, and the end of the output pipe 31 is fixedly connected with multiple output branch pipes 32, the output branch pipe 32 is plugged into the cooling furnace body 102 and fixedly connected to the side wall of the cooling furnace body 102; Among them, multiple groups of air inlet pipes 2 and exhaust pipes 3 are distributed in a linear array. The cold air flows through the input pipe 21 and the input branch pipe 22 into the cooling furnace body 102, passes through the sagger conveyor 103, and 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.

[0024] Example 3, see Figure 6, different from the above embodiment, the composite clamp 5 also includes a base plate 503, the base plate 503 is vertically distributed with the sagger conveyor 103, the surface of the base plate 503 is provided with an upper slide groove 504 and a lower slide groove 505, the upper slide groove 504 and the lower slide groove 505 are both horizontally arranged, a lower bidirectional screw 506 is rotatably connected in the lower slide groove 505, two symmetrically distributed lower nut sleeves 507 are threadedly connected on the lower bidirectional screw 506, the two lower clamping jaws 501 are respectively fixed with the two lower nut sleeves 507, one end of the lower bidirectional screw 506 extends to the edge of the base plate 503 and is fixed with a lower gear 508, an upper bidirectional screw 509 is rotatably connected in the upper slide groove 504, two symmetrically distributed upper nut sleeves 510 are threadedly connected on the upper bidirectional screw 509, the two upper clamping jaws 502 are respectively fixed with the two upper nut sleeves 510, One end of the upper bidirectional screw 509 extends to the edge of the base plate 503 and is fixed with an upper gear 511. The composite clamp 5 also includes a support plate 512 fixed to the edge of the base plate 503. The support plate 512 is vertically distributed with the base plate 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 matches the position of the lower gear 508, and the second rack 519 matches the position of the upper gear 511.

[0025] The upper bidirectional screw 509 has two sets of symmetrical threads with opposite rotation directions, and the two upper nut sleeves 510 are matched with the two sets of threads respectively. The lower bidirectional screw 506 also has two sets of symmetrical threads with opposite rotation directions, and the two lower nut sleeves 507 are matched with the two sets of threads respectively. The sliding direction of the movable plate 517 is consistent with the direction of the driving screw 514. The positions of the first rack 518 and the second rack 519 are staggered. In the initial state, the distance between the first rack 518 and the lower gear 508 is smaller than the distance between the second rack 519 and the upper gear 511. When in use, when the composite fixture 5 moves to the sagger conveyor 103 under the action of the fixture driving assembly 4, the load sagger contacts the base plate 503 and is blocked by the base plate 503. At this time, the load sagger is just located between the two lower jaws 501, and the driving motor 513 is started. The driving motor 513 drives the driving screw 514 to rotate. When the driving screw 514 rotates, the nut seat 516 and the movable plate 517 are driven to 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, thereby driving the two lower jaws 501 to approach each other. The two lower jaws 501 push the sagger. When the transfer assembly 6 snaps the empty sagger onto the loaded sagger, the driving motor 513 operates again, at which 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, and when the upper gear 511 rotates, it drives the upper bidirectional screw 509 to rotate, and 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 clamping jaws 502 to approach each other, and the two lower clamping jaws 501 clamp the empty sagger, and when the composite clamp 5 rotates 180 degrees, the driving motor 513 is controlled to operate, which can drive the upper bidirectional screw 509 and the upper bidirectional screw 509 to rotate in sequence, because at this time the upper bidirectional screw 509 is switched to the bottom after rotating 180 degrees, so it will first drive the two upper clamping jaws 502 to move and release the empty sagger; By providing the composite clamp 5 and starting the driving motor 513 , the lower clamping jaw 501 and the upper clamping jaw 502 can be driven to move, thereby realizing the positioning, clamping and releasing of the loaded sagger and the empty sagger, which facilitates the inversion of electrode materials and the replacement of the sagger.

[0026] Example 4, see Figure 5 , different from the above-mentioned embodiment, the transfer component 6 includes a slide 62 horizontally arranged above the cooling furnace body 102, the slide 62 passes above the circulating conveyor 7, both ends of the slide 62 are fixedly connected with brackets 63, the bracket 63 is fixed to the side wall of the cooling furnace body 102, a slide seat 64 is installed on the slide 62, a first vertical cylinder 65 is fixedly connected to the slide seat 64, the output end of the first vertical cylinder 65 faces downward and is fixedly connected to a mounting plate 66, and the suction cup 61 is arranged in plurality and fixed on the mounting plate 66.

[0027] Among them, the structures of the slide 62 and the slide seat 64 are both existing technologies. The slide 62 is horizontally arranged, and the mounting plate 66 is arranged as a horizontal plate. When in use, the slide 62 operates to drive the slide seat 64 to move. The movement of the slide seat 64 drives the first vertical cylinder 65 and the mounting plate 66 to move onto the circulating conveyor 7, and the empty sagger is adsorbed by the suction cup 61, and then the empty sagger is moved to above the through groove 104, and then the first vertical cylinder 65 is started. After the first vertical cylinder 65 is extended, it drives the mounting plate 66 suction cup 61 and the empty sagger to move downward, just buckling on the load sagger. When the load sagger is flipped 180 degrees with the composite fixture 5, the load sagger is adsorbed by the suction cup 61, and the first vertical cylinder 65 and the slide 62 are started again, so that the load sagger in this time and space can be transferred to the circulating conveyor 7.

[0028] Example 5, see Figure 7 , different from the above-mentioned embodiment, the clamp driving assembly 4 includes a second vertical cylinder 41 fixed on the top of the cooling furnace body 102, the output end of the second vertical cylinder 41 extends to the inside of the cooling furnace body 102 and is fixedly connected to a mounting frame 42, an adjusting motor 43 is fixedly connected to the mounting frame 42, the output end of the adjusting motor 43 is fixedly connected to the side wall of the substrate 503, and a plurality of vertically arranged guide rods 44 are fixedly connected to the top of the mounting frame 42, and the guide rods 44 are movably plugged into the top wall of the cooling furnace body 102.

[0029] Among them, a plurality of linear bearings are fixed on the top wall of the cooling furnace body 102, and the linear bearings are sleeved on the guide rod 44 to reduce friction. When in use, the second cylinder can be extended and retracted to drive the mounting frame 42 to move vertically, thereby driving the adjusting motor 43 and the composite fixture 5 to move vertically as a whole. When the adjusting motor 43 is running, it drives the base plate 503 to rotate, thereby driving the entire composite fixture 5 to rotate, which is conducive to driving the clamped load sagger and the empty sagger to exchange positions, and during the rotation process, the electrode material in the load sagger also falls into the empty sagger.

[0030] Example 6, see Figure 8 , which is different from the above embodiment, the end of the output pipe 31 is fixedly connected to the export pipe 8, the export pipe 8 is equipped with a fan 9, one end of the export pipe 8 extends to the top of the circulating conveyor 7 and is fixedly connected to an air guide funnel 10, the edge of the circulating conveyor 7 is fixedly connected to a bent frame 11, the bent frame 11 is fixedly connected to a temperature sensor 12, the temperature sensor 12 faces the surface of the circulating conveyor 7, the input pipe 21 is also fixedly connected to a distribution pipe 13, the distribution pipe 13 is equipped with a solenoid valve 14, one end of the distribution pipe 13 extends to the top of the circulating conveyor 7 and is fixedly connected to an air supply funnel 15.

[0031] The outlet pipe 8 is connected to one of the multiple outlet pipes 31 near the outlet of the sintering furnace. Since the sintering furnace near the outlet has been cooled to a relatively low temperature, the airflow discharged from the outlet pipe 31 near the outlet has a relatively low temperature. When in use, the fan 9 is started, and the fan 9 sucks the airflow 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 guide funnel 10, so as to cool down the sagger replaced on the circulating conveyor 7, and the cooled sagger is then transported to the bottom of the temperature sensor 12, and the temperature sensor 12 monitors the temperature of the sagger. If the sagger is still at a relatively high temperature, the solenoid valve 14 is controlled to open after operation, and at this time, the cold air in the input pipe 21 is discharged through the distribution pipe 13 and the air supply funnel 15, so as to cool down the sagger on the circulating conveyor 7 again; By arranging the outlet pipe 8, the fan 9 and the air guide funnel 10, the cooling airflow with a lower temperature can be used for a second time and discharged to the circulating conveyor 7, which is beneficial to cooling the replaced sagger and improving the energy utilization rate. The sagger can be reused after cooling and used to replace the hot sagger in the cooling furnace, which can further improve the efficiency of secondary cooling of the motor material. By arranging the temperature sensor 12, the solenoid valve 14, the distribution pipe 13 and the air supply funnel 15, when the cooling effect of the sagger on the conveyor is insufficient, the airflow with a lower temperature can be transported to the circulating conveyor 7 to further cool the sagger, thereby improving the cooling effect of the sagger on the circulating conveyor 7.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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, comprising a sintering furnace body, the sintering furnace body comprising a high-temperature furnace body and a cooling furnace body, the cooling furnace body is respectively provided with an air inlet pipe and an exhaust pipe, characterized in that: A sagger conveyor is installed inside the cooling furnace body, a fixture driving component and a composite fixture are also provided 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, and a circulating conveyor is fixed on the top of the cooling furnace body; The composite clamp comprises two lower clamps and two upper clamps, and the composite clamp 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 saggers; The transfer assembly comprises a suction cup capable of moving between the circulating conveyor and the sagger conveyor, and the transfer assembly is used for transferring the empty sagger; The fixture driving assembly is installed on the top wall of the cooling furnace body and is transmission-connected to the composite fixture, and the fixture driving assembly is used to drive the composite fixture to rotate and move vertically; After the load sagger is initially cooled in the cooling furnace, the fixture driving assembly operates to force the composite fixture to position and clamp the load sagger, 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 flip the composite fixture, the load sagger and the empty sagger to force the raw materials to pour into the empty sagger. Finally, the empty sagger is loaded with 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.

2. A lithium battery positive and negative electrode material sintering furnace according to claim 1, characterized in that: The air inlet pipes are arranged in multiple groups and are evenly installed on the side wall of the cooling furnace body. The air inlet pipes include input pipes, 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.

3. A lithium battery positive and negative electrode material sintering furnace according to claim 2, characterized in that: The exhaust ducts are arranged in multiple groups and are evenly installed on the side wall of the cooling furnace body. The exhaust ducts include output pipes, and multiple output branch pipes are fixedly connected to the ends of the output pipes. 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.

4. A lithium battery positive and negative electrode material sintering furnace according to claim 1, characterized in that: The composite clamp also includes a base plate, which is distributed vertically with 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 on the lower bidirectional screw, and the two lower clamping jaws are respectively fixed to the two lower nut sleeves, and 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 on the upper bidirectional screw, and the 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.

5. The lithium battery positive and negative electrode material sintering furnace according to claim 1, characterized in that: The composite clamp also includes a support plate fixed on the edge of the base plate, the support plate is distributed vertically with the base plate, a driving motor is fixed on the surface of the support plate, the output shaft of the driving motor is fixedly connected with 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, and the upper and lower side edges of the support plate are respectively fixedly connected with a first rack and a second rack, the first rack matches the position of the lower gear, and the second rack matches the position of the upper gear.

6. A lithium battery positive and negative electrode material sintering furnace according to claim 1, 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, and the suction cup is arranged in plurality and fixed on the mounting plate.

7. A lithium battery positive and negative electrode material sintering furnace according to claim 1, characterized in that: The clamp 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 interior of 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.

8. A lithium battery positive and negative electrode material sintering furnace according to claim 7, 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.

9. A lithium battery positive and negative electrode material sintering furnace according to claim 3, characterized in that: The end of the output pipe is fixedly connected with an outlet pipe, a fan is installed on the outlet pipe, and one end of the outlet pipe extends above the circulating conveyor and is fixedly connected with an air guide funnel.

10. A lithium battery positive and negative electrode material sintering furnace according to claim 9, 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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