Energy-saving type vacuum sintering furnace for positive electrode material of lithium ion battery

Abstract

The invention discloses an energy-saving type vacuum sintering furnace for a positive electrode material of a lithium ion battery, and relates to the technical field of energy conservation, the energy-saving type vacuum sintering furnace comprises a supporting base, a sintering furnace main body is clamped to the top end of the supporting base, a sintering inner core is fixedly mounted in the middle of the inner side of the sintering furnace main body, and sealing furnace covers are rotatably mounted at the two ends of the sintering furnace main body; and an internal and external three-dimensional heat circulation mechanism is arranged in the sintering furnace main body, and the internal and external three-dimensional heat circulation mechanism comprises an internal isolation arc-shaped box. According to the sintering furnace, redundant heat in the sintering furnace body can be absorbed and stored through the rotating round box in the cooling stage, the heat stored in the rotating round box is used for preheating the sintering furnace next time, heat energy loss in the using process of the sintering furnace is reduced, heat in different stages is transferred out of the furnace, and the service life of the sintering furnace is prolonged. The excessive heat is prevented from being randomly diffused into external air to cause waste, and the energy-saving and environment-friendly properties of the sintering furnace are improved.

Description

Technical Field

[0001] The invention relates to the technical field of energy saving, in particular to an energy-saving vacuum sintering furnace for positive electrode materials of lithium ion batteries. Background Art

[0002] Lithium batteries are divided into lithium batteries and lithium-ion batteries. Mobile phones and laptops use lithium-ion batteries, which are commonly known as lithium batteries. Batteries generally use materials containing lithium elements as electrodes. They are the representative of modern high-performance batteries. Vacuum sintering furnaces are required in the production process of lithium-ion battery positive electrode materials.

[0003] For this purpose, a Chinese patent discloses a sintering furnace for processing solar silicon wafers, with application number 201710742229.6. The patent is provided with a first organic recovery device for the first waste outlet, a second organic recovery device for the second waste outlet, and a third organic recovery device for the third waste outlet;

[0004] At the same time, a Chinese patent discloses an energy-saving aluminum nitride ceramic sintering furnace, application number 202223401068.X. The patent allows the heat transfer oil in the first heat transfer cavity in the sintering furnace to flow to the second heat transfer cavity. The heat transfer oil can bring the heat of the sintering furnace to the second cavity for reasonable use, which is more energy-saving.

[0005] However, through comparison, it can be seen that both can achieve energy-saving and environmentally friendly operations, but in summary, the vacuum sintering furnace lacks the corresponding auxiliary adjustment structure during use, which leads to the inability to recover and store the heat inside the sintering furnace after completing a single raw material sintering, thereby reducing the heat utilization rate during the use of the sintering furnace, resulting in a large amount of heat being wasted during the use of the sintering furnace, increasing the use cost of the sintering furnace, and reducing the environmental protection performance of the sintering furnace. Summary of the invention

[0006] The present invention provides an energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries, which can effectively solve the problem that the vacuum sintering furnace proposed in the above background technology lacks a corresponding auxiliary adjustment structure during use, resulting in the inability to recover and store the heat inside the sintering furnace after completing a single raw material sintering, thereby reducing the heat utilization rate during the use of the sintering furnace, resulting in a large amount of heat being wasted during the use of the sintering furnace, increasing the use cost of the sintering furnace, and reducing the environmental protection performance of the sintering furnace.

[0007] To achieve the above object, the present invention provides the following technical solution: an energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries, comprising a support base, a sintering furnace body is clamped on the top of the support base, a sintering inner core is fixedly installed in the middle of the inner side of the sintering furnace body, and sealed furnace covers are rotatably installed at both ends of the sintering furnace body;

[0008] The sintering furnace body is provided with an internal and external three-dimensional heat circulation mechanism, which is used to collect and transfer the residual heat before the sintering furnace is turned on, and to circulate and evenly dissipate heat inside the sintering furnace during the process of turning on the sintering furnace;

[0009] The internal and external three-dimensional heat circulation mechanism includes an internal isolation arc box;

[0010] An internal isolation arc box is installed inside the sintering furnace body, heat storage side cylinders are installed on both sides of the sintering furnace body, an inner circular plate is installed inside the heat storage side cylinder, a protective outer cover is connected to one side of the inner circular plate, a transposition motor is installed on one side of the inner circular plate, a rotating circular box is connected to the output shaft of the transposition motor, a central long partition is installed in the middle of the inner side of the rotating circular box, an elastic isolation arc plate is installed inside the rotating circular box, and a heat conduction arc plate is embedded and installed in the heat storage side cylinder near the inner position of the sintering furnace body;

[0011] The side of the sintering furnace body is connected to a reflux bottom pipe, the end of the reflux bottom pipe is connected to a circulating liquid storage outer box, a top isolation partition is installed inside the circulating liquid storage outer box, a circulating pump is connected to the top of the circulating liquid storage outer box, and a liquid infusion top pipe is fixedly connected to the middle of the top of the circulating pump;

[0012] A heat-conducting bottom plate is fixedly installed at the middle position of the bottom surface of the sintering core inside the sintering furnace body, an air guide pipe is fixedly connected to the middle of one end of the bottom of the sintering furnace body, a circulating fan is connected to the end of the air guide pipe, a heat dissipation long box is connected to one end of the circulating fan, and a heat dissipation top plate is connected to the top surface of the heat dissipation long box.

[0013] Preferably, one end of the bottom of the heat dissipation long box is fixedly connected to a shunt fan through a pipeline, the shunt fan is powered by an external power supply, one end of the shunt fan is fixedly connected to a heat exchange rectangular inner box at a position corresponding to the inside of the circulating liquid storage outer box, the middle of one end of the side of the heat exchange rectangular inner box is fixedly connected to a return air distribution pipe, and the middle of the other end of the heat dissipation long box is fixedly connected to the return air main pipe between the sintering furnace body and the sintering furnace body;

[0014] The transposition motor is powered by an external power supply, the circulation pump is powered by an external power supply, and the circulation fan is powered by an external power supply.

[0015] Preferably, the outer side of the rotating round box is tightly slidably fitted with the inner wall of the heat storage side cylinder, the interior of the rotating round box is filled with heat transfer oil, the top and bottom edges of the central long partition are evenly provided with liquid conduction holes, a sealed cavity is left between the outer side of the elastic isolation arc plate and the rotating round box, and the thermal conductivity of the thermal arc plate material is higher than the thermal conductivity of the side wall material of the heat storage side cylinder.

[0016] Preferably, heat conducting plates are evenly arranged on the top and bottom of one side of the internal isolation arc box, and the internal isolation arc box is filled with circulating heat conducting oil.

[0017] Preferably, the bottom outlet of the reflux bottom pipe is located at the top of the top isolation baffle, a flow guide rectangular groove is opened through the middle of the top surface of the top isolation baffle, and the bottom liquid inlet of the circulation pump is located at the bottom of the top isolation baffle.

[0018] Preferably, the heat exchange rectangular inner box is located at the bottom of the top isolation partition, and the end of the reflux air distribution pipe is connected to the inner cavity of the heat dissipation long box.

[0019] Preferably, a peripheral integral spray cooling mechanism is provided on the top of the support base, and the peripheral integral spray cooling mechanism is used to spray and cool the high-temperature container after the furnace is turned on, and collect and circulate the spray water mist during the cooling process;

[0020] The peripheral integral spray cooling mechanism includes supporting corner columns;

[0021] Support corner columns are fixedly installed at the four corners of the top surface of the support base, and the top surfaces of the plurality of support corner columns are commonly fixedly connected to a support top frame. Rectangular corner plates are fixedly installed at both ends of the top surface of the support top frame, and a telescopic motor is fixedly installed in the middle of the top surface of the rectangular corner plate. The telescopic motor is powered by an external power supply, and a driving gear is fixedly sleeved at the outer side of the output shaft of the telescopic motor corresponding to the bottom position of the rectangular corner plate;

[0022] Both ends of the supporting top frame are slidably interlaced with telescopic rectangular tubes, the ends of the telescopic rectangular tubes are fixedly connected with a collecting rectangular cover at the position corresponding to the top of the sintering furnace body, and the side of the telescopic rectangular tube facing the driving gear is fixedly connected with a driving rack;

[0023] A telescopic air guide tube is fixedly connected to the side of the collecting rectangular cover at a position corresponding to the inner part of the telescopic rectangular tube, and a collecting fan is fixedly connected to the end of the telescopic air guide tube at a position corresponding to one side of the supporting corner column. The collecting fan is powered by an external power supply, and a cooling air box is fixedly connected to the end of the collecting fan at a position corresponding to the inner part of the supporting corner column through a pipeline;

[0024] An isolation guide plate is fixedly installed in the middle of the inner side of the cooling wind box, and interception oblique fins are evenly staggered and fixedly connected at the bottom of both sides of the isolation guide plate, and a filter top net is embedded and installed at the top opening of the cooling wind box;

[0025] A return side capillary tube is fixedly connected to the bottom of one side of the cooling air box, and the ends of the return side capillary tube are fixedly connected to a liquid storage bottom box at positions corresponding to the two ends of the bottom of the support base, a driving inclined seat is embedded and installed in the middle of the inner bottom end of the support base, and a driving motor is fixedly installed in the middle of one end of the driving inclined seat, and the driving motor is powered by an external power supply, and a driving center screw is fixedly connected to the vertical axis of the driving motor at a position corresponding to the middle of the inner side of the driving inclined seat;

[0026] A sliding top seat is connected with a threaded sleeve at a position on the outside of the driving center screw rod corresponding to the top of the driving inclined seat, one end of the side of the liquid storage bottom box is fixedly connected with a liquid guiding hose, the end of the liquid guiding hose is fixedly connected with a spray pump at a position on the side of the sliding top seat, one end of the spray pump is fixedly connected with a liquid guiding rectangular box at positions on both ends of one side of the sliding top seat, and a water mist nozzle is evenly and equidistantly embedded in one end of the top surface of the liquid guiding rectangular box.

[0027] Preferably, the top of the telescopic rectangular tube is limited by a top plate, the outer side of the telescopic rectangular tube is tightly slidably fitted with the supporting top frame, and the driving gear and the driving rack are meshed with each other.

[0028] Preferably, a gap is left between the bottom end surface of the isolation guide plate and the inner bottom surface of the cooling air box, and a gap is left between the end of the intercepting inclined wing and the inner wall of the cooling air box.

[0029] Preferably, the bottom surface of the sliding top seat and the top surface of the driving inclined seat are tightly slidably fitted, and the end of the spray pump is embedded in the sliding top seat.

[0030] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0031] 1. An internal and external three-dimensional heat circulation mechanism is provided. Through the mutual cooperation between the internal components of the internal and external three-dimensional heat circulation mechanism, the heat circulation process during the use of the sintering furnace is optimized. Through the mutual cooperation of the internal components of the heat storage side cylinder and the continuous change of the position of the rotating round box, the sintering furnace can absorb and store the excess heat inside the main body of the sintering furnace through the rotating round box during the cooling stage. The interior of the rotating round box is insulated by the rotating round box transposition and the elastic isolation arc plate, and the heat stored in the rotating round box is used for the preheating of the next sintering furnace, thereby effectively reducing the loss of heat energy during the use of the sintering furnace, so that the sintering furnace can transfer the heat at different stages outside the furnace during the entire use process, preventing the excess heat from being randomly diffused into the external air and causing waste, thereby improving the energy saving and environmental protection of the sintering furnace;

[0032] At the same time, the internal isolation arc box cooperates with the circulating liquid storage outer box to drive the heat transfer oil inside and outside the sintering furnace body to circulate continuously, and then accelerates the heat dissipation process inside the sintering furnace body through the circulation of the heat transfer oil, so that the sintering furnace body can quickly and evenly dissipate heat before opening, and the heat inside the sintering furnace body is stored externally through the circulating liquid storage outer box to achieve staged heat exchange inside the sintering furnace body. After the sintering furnace body is opened, the inside is continuously cooled by the circulating airflow, and the range of heat diffusion inside the sintering furnace body is controlled by the circulating airflow, which effectively avoids the increase of furnace mouth temperature caused by the opening of the sintering furnace body and affects the normal work of the operator, and improves the use experience of the sintering furnace;

[0033] Through the cooperation between the internal isolation arc box, the heat storage side tube and the circulating fan, the heat exchange cooling at different stages inside the sintering furnace is realized, the heat inside the sintering furnace body is stored and transferred before the furnace is opened, and the inside of the sintering furnace body is preheated by heat transfer oil and hot air flow when the furnace is opened next time, thereby effectively reducing the energy consumption when the sintering furnace is opened for the second time, and effectively reducing the use cost of the sintering furnace.

[0034] 2. An integral spray cooling mechanism is set up. Through the cooperation between the components inside the integral spray cooling mechanism, the spray cooling process of the sintered material after it comes out of the furnace is optimized. The water mist generated by the spray pump and the water mist nozzle is used to quickly cool the finished material after it comes out of the furnace, so as to facilitate the subsequent transportation and handling of the finished material. At the same time, the temperature of the material can be indirectly judged by the density of water vapor, which effectively prevents the transporter from being injured by accidental touch, thereby effectively improving the safety of the sintering furnace;

[0035] At the same time, the water vapor generated in the material cooling process can be collected through the telescopic rectangular tube and the collecting rectangular hood, and the water vapor is liquefied and circulated through the mutual cooperation between the components inside the cooling bellows, thereby effectively reducing the waste of water resources in the material cooling process, and effectively avoiding the water vapor generated in the material cooling process from diffusing into the surrounding environment at will to cause pollution, thereby effectively improving the environmental protection of the sintering furnace, and through the synchronous movement and spraying between the water mist nozzle and the collecting rectangular hood, the spraying effect in the material cooling process is effectively improved, the collection process of the water vapor generated in the cooling process is optimized, and the use fluency and safety of the sintering furnace are further improved.

[0036] In summary, through the mutual cooperation between the internal and external three-dimensional heat circulation mechanisms and the internal components of the peripheral integral spray cooling mechanism, the use process of the sintering furnace is comprehensively optimized through a variety of heat conduction, heat storage and cooling methods, and the residual heat of the sintering furnace is used to preheat the next furnace. At the same time, a variety of heat transfer methods are used to dissipate heat in stages inside the sintering furnace body, which effectively prevents the damage of materials and components caused by excessive heat dissipation inside the sintering furnace body. The material just out of the furnace is quickly cooled by spraying external coolant. At the same time, the water vapor is quickly collected and liquefied, which effectively reduces the waste of water resources, prevents pollution to the surrounding environment during the cooling process of the material, and further improves the environmental friendliness of the use of the sintering furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0038] Figure 1 It is a schematic diagram of the structure of the present invention;

[0039] Figure 2 It is a schematic diagram of the structure of the sintered inner core installation of the present invention;

[0040] Figure 3 It is a structural schematic diagram of the installation of the driving inclined seat of the present invention;

[0041] Figure 4 It is a structural schematic diagram of the internal and external three-dimensional heat circulation mechanism of the present invention;

[0042] Figure 5 It is a structural schematic diagram of the installation of the heat exchange rectangular inner box of the present invention;

[0043] Figure 6 It is a structural schematic diagram of the installation of the elastic isolation arc plate of the present invention;

[0044] Figure 7 It is a structural schematic diagram of the installation of the heat dissipation long box of the present invention;

[0045] Figure 8 It is a structural schematic diagram of the peripheral integral spray cooling mechanism of the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the installation of the isolation guide plate of the present invention;

[0047] Fig.10 It is a structural schematic diagram of the installation of the sliding top seat of the present invention;

[0048] Numbers in the figure: 1. Support base; 2. Sintering furnace body; 3. Sintering core; 4. Sealing furnace cover;

[0049] 5. Internal and external three-dimensional heat circulation mechanism; 501. Internal isolation arc box; 502. Heat storage side cylinder; 503. Install inner circular plate; 504. Protective outer cover; 505. Transposition motor; 506. Rotating circular box; 507. Central long partition; 508. Elastic isolation arc plate; 509. Heat conduction arc plate; 510. Reflux bottom pipe; 511. Circulating liquid storage outer box; 512. Top isolation partition; 513. Circulating pump; 514. Infusion top pipe; 515. Heat conduction bottom plate; 516. Air guide pipe; 517. Circulating fan; 518. Heat dissipation long box; 519. Heat dissipation top plate; 520. Diverter fan; 521. Heat exchange rectangular inner box; 522. Reflux air distribution pipe; 523. Return air pipe;

[0050] 6. External integral spray cooling mechanism; 601. Supporting corner column; 602. Supporting top frame; 603. Installing rectangular corner plate; 604. Telescopic motor; 605. Driving gear; 606. Telescopic rectangular tube; 607. Collecting rectangular cover; 608. Driving rack; 609. Telescopic air duct; 610. Collecting fan; 611. Cooling bellows; 612. Isolation guide plate; 613. Intercepting inclined fins; 614. Filtering top net; 615. Reflux side capillary; 616. Liquid storage bottom box; 617. Driving inclined seat; 618. Driving motor; 619. Driving center screw rod; 620. Sliding top seat; 621. Liquid guide hose; 622. Spray pump; 623. Liquid guide rectangular box; 624. Water mist nozzle. DETAILED DESCRIPTION

[0051] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0052] Example: Figure 1-10 As shown, the present invention provides a technical solution, an energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries, comprising a support base 1, a sintering furnace body 2 is fixedly clamped on the top of the support base 1, a sintering inner core 3 is fixedly installed in the middle of the inner side of the sintering furnace body 2, and sealing furnace covers 4 are rotatably installed at both ends of the sintering furnace body 2;

[0053] An internal and external three-dimensional heat circulation mechanism 5 is provided inside the sintering furnace body 2. The internal and external three-dimensional heat circulation mechanism 5 is used to collect and transfer the residual heat before the sintering furnace is turned on, and to circulate and evenly dissipate heat inside the sintering furnace during the process of turning on the sintering furnace.

[0054] The internal and external three-dimensional heat circulation mechanism 5 includes an internal isolation arc box 501, a heat storage side cylinder 502, an installation inner circular plate 503, a protective outer cover 504, a transposition motor 505, a rotating circular box 506, a central long partition 507, an elastic isolation arc plate 508, a heat conduction arc plate 509, a reflux bottom pipe 510, a circulating liquid storage outer box 511, a top isolation partition 512, a circulation pump 513, an infusion top pipe 514, a heat conduction bottom plate 515, an air guide pipe 516, a circulation fan 517, a heat dissipation long box 518, a heat dissipation top plate 519, a flow splitter fan 520, a heat exchange rectangular inner box 521, a reflux air splitter pipe 522 and a return air main pipe 523;

[0055] Internal isolation arc boxes 501 are embedded and installed at positions on both sides of the sintering core 3 in the sintering furnace body 2, and heat conduction plates are evenly arranged on the top and bottom of one side of the internal isolation arc box 501, and the internal isolation arc box 501 is filled with circulating heat conduction oil;

[0056] A heat storage side cylinder 502 is embedded and installed at the inner position of the internal isolation arc box 501 corresponding to the middle of both sides of the sintering furnace body 2, and an inner circular plate 503 is embedded and installed at one end of the heat storage side cylinder 502. A protective outer cover 504 is fixedly connected to the inner position of the heat storage side cylinder 502 on one side of the inner circular plate 503, and a transposition motor 505 is fixedly installed on the inner position of the protective outer cover 504 on one side of the inner circular plate 503. The transposition motor 505 is powered by an external power supply, and a rotating circular box 506 is fixedly connected to the output shaft of the transposition motor 505 at the position corresponding to the other side of the inner circular plate 503. The rotating circular box 506 is fixedly installed in the middle of the inner side There is a central long partition 507, and an elastic isolation arc plate 508 is fixedly installed at a position on one side of the central long partition 507 inside the rotating round box 506. A heat-conducting arc plate 509 is embedded and installed at a position inside the heat storage side cylinder 502 close to the sintering furnace body 2. The outer side of the rotating round box 506 and the inner wall of the heat storage side cylinder 502 are tightly slidably fitted, and the interior of the rotating round box 506 is filled with heat-conducting oil. The top and bottom edges of the central long partition 507 are evenly provided with liquid-conducting holes. A sealed cavity is left between the outer side of the elastic isolation arc plate 508 and the rotating round box 506. The thermal conductivity of the heat-conducting arc plate 509 material is higher than that of the side wall material of the heat storage side cylinder 502.

[0057] A reflux bottom pipe 510 is fixedly connected at the side positions of the internal isolation arc box 501 at both ends of the side of the sintering furnace body 2, and a circulating liquid storage outer box 511 is fixedly connected at the ends of the reflux bottom pipe 510 corresponding to the top positions on both sides of the support base 1. A top isolation partition 512 is fixedly installed on the inner top of the circulating liquid storage outer box 511. A circulating pump 513 is fixedly connected to the top of the circulating liquid storage outer box 511 through a pipeline. The circulating pump 513 is powered by an external power supply. A liquid infusion top pipe 514 is fixedly connected to the middle of the top of the circulating pump 513. The bottom outlet of the reflux bottom pipe 510 is located at the top of the top isolation partition 512. A guide rectangular groove is opened through the middle of the top surface of the top isolation partition 512, and the bottom liquid inlet of the circulating pump 513 is located at the bottom of the top isolation partition 512.

[0058] A heat-conducting bottom plate 515 is fixedly installed at the middle position of the bottom surface of the sintering inner core 3 inside the sintering furnace body 2, and an air guide pipe 516 is fixedly connected to the middle of one end of the bottom of the sintering furnace body 2. A circulating fan 517 is fixedly connected to the end of the air guide pipe 516. The circulating fan 517 is powered by an external power supply. One end of the circulating fan 517 is fixedly connected to the positions on both sides of the sintering furnace body 2. A heat dissipation long box 518 is fixedly connected to the top surface of the heat dissipation long box 518 at an equidistant and uniform distance.

[0059] One end of the bottom of the heat dissipation long box 518 is fixedly connected to a shunt fan 520 through a pipeline, and the shunt fan 520 is powered by an external power supply. One end of the shunt fan 520 is fixedly connected to a heat exchange rectangular inner box 521 at a position corresponding to the internal position of the circulating liquid storage outer box 511. A reflux air distribution pipe 522 is fixedly connected to the middle of one end of the side of the heat exchange rectangular inner box 521. A return air main pipe 523 is fixedly connected between the middle of the other end of the heat dissipation long box 518 and the sintering furnace body 2. The heat exchange rectangular inner box 521 is located at the bottom of the top isolation partition 512, and the end of the reflux air distribution pipe 522 is connected to the inner cavity of the heat dissipation long box 518. Through the internal and external three-dimensional heat circulation mechanism The mutual cooperation among the internal components optimizes the heat circulation process during the use of the sintering furnace. Through the mutual cooperation among the internal components of the heat storage side cylinder 502 and the continuous change of the position of the rotating round box 506, the sintering furnace can absorb and store the excess heat inside the sintering furnace body 2 through the rotating round box 506 during the cooling stage. The rotating round box 506 is replaced with the elastic isolation arc plate 508 to keep the inside of the rotating round box 506 warm, and the heat stored in the rotating round box 506 is used for the preheating of the next sintering furnace, thereby effectively reducing the loss of heat energy during the use of the sintering furnace and improving the energy saving and environmental protection of the sintering furnace.

[0060] At the same time, the internal isolation arc box 501 cooperates with the circulating liquid storage outer box 511 to drive the heat transfer oil inside and outside the sintering furnace main body 2 to circulate continuously, and then the heat dissipation process inside the sintering furnace main body 2 is accelerated by the circulation of the heat transfer oil, so that the sintering furnace main body 2 can quickly and evenly dissipate heat before being turned on, and the heat inside the sintering furnace main body 2 is externally stored by the circulating liquid storage outer box 511 to achieve staged heat exchange inside the sintering furnace main body 2. After the sintering furnace main body 2 is turned on, the inside is continuously cooled by the circulating airflow, and the range of heat diffusion inside the sintering furnace main body 2 is controlled by the circulating airflow, which effectively avoids the temperature rise of the furnace mouth caused by the opening of the sintering furnace main body 2 affecting the normal work of the operator, and improves the user experience of the sintering furnace;

[0061] Finally, through the cooperation between the internal isolation arc box 501, the heat storage side tube 502 and the circulating fan 517, the heat exchange cooling at different stages inside the sintering furnace is realized, the heat inside the sintering furnace body 2 is stored and transferred before the furnace is opened, and the inside of the sintering furnace body 2 is preheated by heat transfer oil and hot air flow when the furnace is opened next time, thereby effectively reducing the energy consumption when the sintering furnace is opened for the second time, and effectively reducing the use cost of the sintering furnace;

[0062] The top of the support base 1 is provided with a peripheral integral spray cooling mechanism 6, which is used to spray and cool the high-temperature container after the furnace is turned on, and collect and circulate the spray water mist during the cooling process;

[0063] The peripheral integral spray cooling mechanism 6 includes a supporting corner column 601, a supporting top frame 602, a mounting rectangular corner plate 603, a telescopic motor 604, a driving gear 605, a telescopic rectangular tube 606, a collecting rectangular cover 607, a driving rack 608, a telescopic air guide 609, a collecting fan 610, a cooling air box 611, an isolation guide plate 612, an intercepting inclined wing 613, a filtering top net 614, a reflux side capillary 615, a liquid storage bottom box 616, a driving inclined seat 617, a driving motor 618, a driving center screw 619, a sliding top seat 620, a liquid guide hose 621, a spray pump 622, a liquid guide rectangular box 623 and a water mist nozzle 624;

[0064] Supporting corner columns 601 are fixedly installed at the four corners of the top surface of the supporting base 1, and the top surfaces of multiple supporting corner columns 601 are commonly fixedly connected to a supporting top frame 602. Rectangular corner plates 603 are fixedly installed at both ends of the top surface of the supporting top frame 602. A telescopic motor 604 is fixedly installed in the middle of the top surface of the rectangular corner plate 603. The telescopic motor 604 is powered by an external power supply, and a driving gear 605 is fixedly sleeved at the outer side of the output shaft of the telescopic motor 604 corresponding to the bottom position of the rectangular corner plate 603;

[0065] Telescopic rectangular tubes 606 are slidably installed at both ends of the support frame 602, and a collecting rectangular cover 607 is fixedly connected to the end of the telescopic rectangular tube 606 corresponding to the top position of the sintering furnace body 2. A driving rack 608 is fixedly connected to the side of the telescopic rectangular tube 606 facing the driving gear 605. The top of the telescopic rectangular tube 606 is limited by the top plate. The outer side of the telescopic rectangular tube 606 is tightly slidably fitted with the support frame 602, and the driving gear 605 and the driving rack 608 are meshed with each other.

[0066] A telescopic air guide 609 is fixedly connected to the side of the collecting rectangular cover 607 at a position corresponding to the inside of the telescopic rectangular tube 606, and a collecting fan 610 is fixedly connected to the end of the telescopic air guide 609 at a position corresponding to one side of the supporting corner column 601. The collecting fan 610 is powered by an external power supply, and a cooling air box 611 is fixedly connected to the end of the collecting fan 610 at a position corresponding to the inside of the supporting corner column 601 through a pipeline;

[0067] An isolation guide plate 612 is fixedly installed in the middle of the inner side of the cooling air box 611, and interception oblique fins 613 are evenly staggered and fixedly connected at the bottom of both sides of the isolation guide plate 612. A filter top net 614 is embedded and installed at the top opening of the cooling air box 611. A gap is left between the bottom end surface of the isolation guide plate 612 and the inner bottom surface of the cooling air box 611, and a gap is left between the end of the interception oblique fin 613 and the inner wall of the cooling air box 611.

[0068] A return side capillary 615 is fixedly connected to the bottom of one side of the cooling air box 611, and a liquid storage bottom box 616 is fixedly connected to the ends of the return side capillary 615 at positions corresponding to both ends of the bottom of the support base 1, and a driving inclined seat 617 is embedded in the middle of the inner bottom end of the support base 1, and a driving motor 618 is fixedly installed in the middle of one end of the driving inclined seat 617. The driving motor 618 is powered by an external power supply, and a driving center screw 619 is fixedly connected to the vertical axis of the driving motor 618 at the middle position of the inner side of the driving inclined seat 617;

[0069] The outer side of the driving center screw rod 619 corresponds to the top position of the driving inclined seat 617, and a sliding top seat 620 is connected through a threaded sleeve. One end of the side of the liquid storage bottom box 616 is fixedly connected to a liquid guide hose 621. The end of the liquid guide hose 621 is fixedly connected to a spray pump 622 at the side position corresponding to the sliding top seat 620. One end of the spray pump 622 corresponds to the two ends of one side of the sliding top seat 620. A liquid guide rectangular box 623 is fixedly connected. One end of the top surface of the liquid guide rectangular box 623 is evenly embedded with a water mist nozzle 624. The bottom surface of the sliding top seat 620 and the top surface of the driving inclined seat 617 are equidistantly and evenly embedded. The spray pump 622 and the water mist nozzle 624 are tightly slidably fitted together, and the end of the spray pump 622 is embedded in the sliding top seat 620. Through the mutual cooperation between the components inside the peripheral integral spray cooling mechanism 6, the spray cooling process after the sintered material comes out of the furnace is optimized. The water mist generated by the spray pump 622 and the water mist nozzle 624 can quickly cool the finished material after it comes out of the furnace, so as to facilitate the subsequent transportation and handling of the finished material. At the same time, the temperature of the material can be indirectly judged by the density of the water vapor, which effectively prevents the transporter from being injured by accidental touch, thereby effectively improving the safety of the sintering furnace.

[0070] At the same time, the water vapor generated during the material cooling process can be collected through the telescopic rectangular tube 606 and the collecting rectangular cover 607, and the water vapor is liquefied and circulated through the mutual cooperation between the components inside the cooling bellows 611, thereby effectively reducing the waste of water resources during the material cooling process, and effectively avoiding the water vapor generated during the material cooling process from diffusing into the surrounding environment and causing pollution, thereby effectively improving the environmental protection of the sintering furnace, and through the synchronous movement and spraying between the water mist nozzle 624 and the collecting rectangular cover 607, the spraying effect during the material cooling process is effectively improved, the collection process of the water vapor generated during the cooling process is optimized, and the smoothness and safety of the use of the sintering furnace are further improved.

[0071] Working principle and use process of the present invention: In the process of using the sintering furnace of the present invention, the raw materials to be sintered need to be loaded into the sintering inner core 3 first, and then the sealing furnace cover 4 is closed to seal the sintering furnace body 2, and then the materials are sintered by the sintering furnace. After the sintering of the materials is completed, the heat inside the sintering furnace body 2 needs to be dissipated first, and then the sintering furnace is opened to take out the materials;

[0072] Through the cooperation of the components inside the heat storage side cylinder 502 and the continuous change of the position of the rotating round box 506, the sintering furnace can absorb and store the excess heat inside the sintering furnace body 2 through the rotating round box 506 during the cooling stage, and the rotating round box 506 is replaced by the elastic isolation arc plate 508 to insulate the inside of the rotating round box 506, and the heat stored in the rotating round box 506 is used for preheating the sintering furnace next time, thereby effectively reducing the loss of heat energy during the use of the sintering furnace, and enabling the sintering furnace to transfer the heat at different stages outside the furnace during the entire use process, preventing the excess heat from being randomly diffused into the external air and causing waste, thereby improving the energy saving and environmental protection of the sintering furnace;

[0073] When the inside of the sintering furnace body 2 needs to be cooled down, the components inside are installed on both sides of the sintering furnace body 2 through the heat storage side tube 502, and the outer side of the transposition motor 505 is protected by installing the inner circular plate 503 and the protective outer cover 504 to prevent the transposition motor 505 from running in a high temperature environment for a long time and malfunctioning. After the sintering furnace body 2 enters the cooling stage, the rotating circular box 506 is driven to rotate by the transposition motor 505, so that the heat transfer oil inside the rotating circular box 506 can fit tightly between the rotating circular box 506 and the heat conduction arc plate 509, and then the residual heat inside the sintering furnace body 2 is absorbed and conducted to the inside of the rotating circular box 506 through the heat conduction arc plate 509, so as to achieve the initial slow cooling of the inside of the sintering furnace body 2;

[0074] When the temperature inside the sintering furnace body 2 cools down to a suitable range, the transposition motor 505 is started again to drive the rotating circular box 506 to rotate, and during the rotation of the rotating circular box 506, the heat-conducting oil inside the rotating circular box 506 after absorbing heat can slowly pass through the installed inner circular plate 503 for mixing, so as to achieve uniform distribution of heat inside the rotating circular box 506 and prevent the rotating circular box 506 from malfunctioning due to uneven temperature inside the rotating circular box 506. Then, the elastic isolation arc plate 508 is rotated to the side close to the heat-conducting arc plate 509, and then the side of the rotating circular box 506 is isolated by the vacuum cavity outside the elastic isolation arc plate 508, so as to prevent the heat inside the rotating circular box 506 from being quickly dissipated and wasted after the sintering furnace body 2 is opened.

[0075] While the heat transfer oil in the rotating round box 506 is absorbing and transferring the heat inside the sintering furnace body 2, the circulating pump 513 is started synchronously to cooperate with the liquid infusion top pipe 514 to introduce the heat transfer oil in the circulating liquid storage outer box 511 into the inner isolation arc box 501, and then the heat transfer oil in the sintering furnace body 2 is quickly exchanged with the heat in the process of flowing through the inner isolation arc box 501, and then the heat transfer oil after heat exchange flows back to the circulating liquid storage outer box 511 through the reflux bottom pipe 510, and then the heat inside the sintering furnace body 2 is absorbed and taken away by the circulating flow of the heat transfer oil, so as to achieve rapid cooling of the inside of the sintering furnace body 2;

[0076] When the temperature inside the sintering furnace body 2 drops to a suitable range and the furnace can be opened, the circulating fan 517 is started to suck the airflow inside the air guide pipe 516, and then the airflow inside the lower cavity of the sintering furnace body 2 is sucked through the air guide pipe 516, and during the flow of the lower airflow of the sintering furnace body 2, the heat can be exchanged and conducted with the heat outside the sintering inner core 3 through the heat-conducting bottom plate 515, and then the airflow after absorbing heat is introduced into the heat dissipation long box 518 through the circulating fan 517, and the high-temperature airflow is quickly dissipated through the heat dissipation top plate 519 when it flows through the heat dissipation long box 518, so as to prevent the sintering furnace body 2 from being opened with a high temperature and causing damage to the operator;

[0077] When the inside of the circulating liquid storage outer box 511 needs to be heat exchanged, the airflow is introduced into the inside of the heat exchange rectangular inner box 521 through the split flow fan 520, and heat is exchanged with the heat transfer oil inside the circulating liquid storage outer box 511 during the airflow flowing through the inside of the heat exchange rectangular inner box 521, and the airflow inside the heat exchange rectangular inner box 521 is introduced into the tail cavity of the heat dissipation long box 518 through the return air split pipe 522, so that this hot airflow directly skips the heat dissipation process of the heat dissipation long box 518 and returns to the inside of the sintering furnace body 2 through the return air main pipe 523, and then the components inside the sintering furnace body 2 are circulated and heated by the high-temperature circulating airflow;

[0078] In the process of taking out the sintered finished product from the inside of the sintering furnace body 2, it is necessary to spray the sintered finished product for protection. When spraying and cooling the sintered material, the driving motor 618 at the end of the driving inclined seat 617 is started to drive the driving center screw 619 to rotate, and the sliding top seat 620 is driven to slide along the top of the driving inclined seat 617 by driving the rotation of the center screw 619, and the spray pump 622 and the liquid guide rectangular box 623 are synchronously driven to slide in the process of driving the inclined seat 617 to slide, and the spray pump 622 cooperates with the liquid guide hose 621 to introduce the spray liquid in the liquid storage bottom box 616 into the liquid guide rectangular box 623, and then the spray liquid is sprayed evenly from bottom to top through the water mist nozzle 624, and then when the water mist flows through the outside of the material just out of the furnace, it adheres to the outside of the material to form water droplets, and the water droplets are evaporated into water vapor and floated up by the residual temperature of the material itself, further completing the cooling of the sintered material;

[0079] When it is necessary to collect the water vapor generated during the spray cooling process, the collection fan 610 is started to cooperate with the telescopic air guide tube 609 to continuously suck the air flow inside the collection rectangular cover 607, and then the water vapor in the bottom space of the collection rectangular cover 607 is sucked and collected by negative pressure. At the same time, the floating water vapor is sucked by the collection rectangular cover 607, and the telescopic motor 604 installed on the top of the rectangular corner plate 603 is started to drive the driving gear 605 to rotate. During the rotation of the driving gear 605, the driving rack 608 is cooperated to drive the telescopic rectangular tube 606 to slide along the top of the supporting top frame 602. During the sliding process of the telescopic rectangular tube 606, the collection rectangular cover 607 and the water mist nozzle 624 are driven to move synchronously to ensure that the water mist generated by the water mist nozzle 624 can be fully collected.

[0080] The water vapor collected by the collecting rectangular cover 607 can be introduced into the cooling air box 611 through the telescopic air guide pipe 609, and after the water vapor enters the cooling air box 611 with the air flow, the water vapor can be guided and intercepted by the isolation guide plate 612 and the intercepting inclined wing 613, and the water vapor can be re-liquefied and drip into the cooling air box 611, and finally the re-liquefied spray liquid is guided back to the liquid storage bottom box 616 through the reflux side capillary 615 to realize the circulation of the spray liquid.

[0081] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries, comprising a supporting base (1), characterized in that: The top of the support base (1) is clamped with a sintering furnace body (2), a sintering inner core (3) is fixedly installed in the middle of the inner side of the sintering furnace body (2), and sealing furnace covers (4) are rotatably installed at both ends of the sintering furnace body (2); The sintering furnace body (2) is provided with an internal and external three-dimensional heat circulation mechanism (5), which is used to collect and transfer the residual heat before the sintering furnace is turned on, and to circulate and uniformly dissipate heat inside the sintering furnace during the process of turning on the sintering furnace; The internal and external three-dimensional heat circulation mechanism (5) comprises an internal isolation arc box (501); An internal isolation arc box (501) is installed inside the sintering furnace body (2), heat storage side cylinders (502) are installed on both sides of the sintering furnace body (2), an installation inner circular plate (503) is installed inside the heat storage side cylinder (502), one side of the installation inner circular plate (503) is connected to a protective outer cover (504), one side of the installation inner circular plate (503) is installed with a transposition motor (505), the output shaft of the transposition motor (505) is connected to a rotating circular box (506), a central long partition plate (507) is installed in the middle of the inner side of the rotating circular box (506), an elastic isolation arc plate (508) is installed inside the rotating circular box (506), and a heat conduction arc plate (509) is embedded and installed in the heat storage side cylinder (502) near the inner position of the sintering furnace body (2); The sintering furnace body (2) is connected to a reflux bottom pipe (510) on its side, the end of the reflux bottom pipe (510) is connected to a circulating liquid storage outer box (511), a top isolation baffle (512) is installed inside the circulating liquid storage outer box (511), a circulating pump (513) is connected to the top of the circulating liquid storage outer box (511), and a top infusion pipe (514) is fixedly connected to the middle of the top of the circulating pump (513); A heat-conducting bottom plate (515) is fixedly installed in the middle of the bottom surface of the sintering inner core (3) inside the sintering furnace body (2), and an air guide pipe (516) is fixedly connected to the middle of one end of the bottom of the sintering furnace body (2). A circulating fan (517) is connected to the end of the air guide pipe (516), and a heat dissipation long box (518) is connected to one end of the circulating fan (517). The top surface of the heat dissipation long box (518) is connected to a heat dissipation top plate (519).

2. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 1, characterized in that: One end of the bottom of the heat dissipation long box (518) is fixedly connected to a flow splitter fan (520) through a pipeline, and the flow splitter fan (520) is powered by an external power supply. One end of the flow splitter fan (520) is fixedly connected to a heat exchange rectangular inner box (521) at a position corresponding to the inside of the circulating liquid storage outer box (511). A return air splitter pipe (522) is fixedly connected to the middle of one end of the side of the heat exchange rectangular inner box (521). A return air main pipe (523) is fixedly connected between the middle of the other end of the heat dissipation long box (518) and the sintering furnace body (2); The transposition motor (505) is powered by an external power supply, the circulation pump (513) is powered by an external power supply, and the circulation fan (517) is powered by an external power supply.

3. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 1, characterized in that: The outer side of the rotating circular box (506) is tightly slidably fitted with the inner wall of the heat storage side cylinder (502), the interior of the rotating circular box (506) is filled with heat transfer oil, the top and bottom edges of the central long partition (507) are evenly provided with liquid transfer holes, a sealed cavity is left between the outer side of the elastic isolation arc plate (508) and the rotating circular box (506), and the thermal conductivity of the material of the heat transfer arc plate (509) is higher than the thermal conductivity of the side wall material of the heat storage side cylinder (502).

4. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 1, characterized in that: Heat conduction plates are evenly arranged on the top and bottom of one side of the internal isolation arc box (501), and the internal isolation arc box (501) is filled with circulating heat conduction oil.

5. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 1, characterized in that: The bottom outlet of the reflux bottom pipe (510) is located at the top of the top isolation baffle (512), a flow guide rectangular groove is opened through the middle of the top surface of the top isolation baffle (512), and the bottom liquid inlet of the circulation pump (513) is located at the bottom of the top isolation baffle (512).

6. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 1, characterized in that: The heat exchange rectangular inner box (521) is located at the bottom of the top isolation baffle (512), and the end of the return air distribution pipe (522) is connected to the inner cavity of the heat dissipation long box (518).

7. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 1, characterized in that: The top of the support base (1) is provided with a peripheral integral spray cooling mechanism (6), which is used to spray and cool the high-temperature container after the furnace is turned on, and to collect and circulate the spray water mist during the cooling process; The peripheral integral spray cooling mechanism (6) comprises a supporting corner column (601); Supporting corner columns (601) are fixedly installed at the four corners of the top surface of the support base (1); the top surfaces of the plurality of supporting corner columns (601) are commonly fixedly connected to a supporting top frame (602); both ends of the top surface of the supporting top frame (602) are fixedly installed with mounting rectangular corner plates (603); a telescopic motor (604) is fixedly installed in the middle of the top surface of the mounting rectangular corner plate (603); the telescopic motor (604) is powered by an external power supply; and a driving gear (605) is fixedly sleeved at the outer side of the output shaft of the telescopic motor (604) corresponding to the bottom position of the mounting rectangular corner plate (603); Both ends of the supporting top frame (602) are slidably interlaced with telescopic rectangular tubes (606), the ends of the telescopic rectangular tubes (606) are fixedly connected with a collecting rectangular cover (607) at a position corresponding to the top of the sintering furnace body (2), and the side of the telescopic rectangular tube (606) facing the driving gear (605) is fixedly connected with a driving rack (608); A telescopic air guide tube (609) is fixedly connected to a position inside the telescopic rectangular tube (606) on the side of the collecting rectangular cover (607); a collecting fan (610) is fixedly connected to a position on one side of the supporting corner column (601) at the end of the telescopic air guide tube (609); the collecting fan (610) is powered by an external power supply; and a cooling air box (611) is fixedly connected to the end of the collecting fan (610) at a position inside the supporting corner column (601) via a pipeline; An isolation guide plate (612) is fixedly installed in the middle of the inner side of the cooling wind box (611), and interception oblique fins (613) are evenly staggered and fixedly connected to the bottom of both sides of the isolation guide plate (612), and a filtering top net (614) is embedded and installed at the top opening of the cooling wind box (611); A return side capillary tube (615) is fixedly connected to the bottom of one side of the cooling air box (611); the ends of the return side capillary tube (615) are fixedly connected to a liquid storage bottom box (616) at positions corresponding to both ends of the bottom of the support base (1); a driving inclined seat (617) is embedded and installed in the middle of the inner bottom end of the support base (1); a driving motor (618) is fixedly installed in the middle of one end of the driving inclined seat (617); the driving motor (618) is powered by an external power supply; and a driving center screw rod (619) is fixedly connected to the vertical axis of the driving motor (618) at a position corresponding to the inner middle of the driving inclined seat (617); A sliding top seat (620) is connected to the outside of the driving center screw rod (619) at a position corresponding to the top of the driving inclined seat (617) through a threaded sleeve, and a liquid guide hose (621) is fixedly connected to one end of the side of the liquid storage bottom box (616), and a spray pump (622) is fixedly connected to the end of the liquid guide hose (621) at a position corresponding to the side of the sliding top seat (620), and one end of the spray pump (622) is fixedly connected to a liquid guide rectangular box (623) at positions corresponding to both ends of one side of the sliding top seat (620), and a water mist nozzle (624) is evenly and equidistantly embedded and installed at one end of the top surface of the liquid guide rectangular box (623).

8. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 7, characterized in that: The top of the telescopic rectangular tube (606) is limited by a top plate, the outer side of the telescopic rectangular tube (606) is tightly slidably fitted with the supporting top frame (602), and the driving gear (605) and the driving rack (608) are meshed with each other.

9. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 7, characterized in that: A gap is left between the bottom end surface of the isolation guide plate (612) and the inner bottom surface of the cooling air box (611), and a gap is left between the end of the intercepting inclined wing (613) and the inner wall of the cooling air box (611).

10. The energy-saving vacuum sintering furnace for positive electrode materials of lithium-ion batteries according to claim 7, characterized in that: The bottom surface of the sliding top seat (620) and the top surface of the driving inclined seat (617) are tightly slidably fitted, and the end of the spray pump (622) is embedded in the sliding top seat (620).

Images