CN115317940A - Preparation facilities of nickel lithium manganate lithium cell cathode material - Google Patents
Preparation facilities of nickel lithium manganate lithium cell cathode material Download PDFInfo
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- CN115317940A CN115317940A CN202211269194.6A CN202211269194A CN115317940A CN 115317940 A CN115317940 A CN 115317940A CN 202211269194 A CN202211269194 A CN 202211269194A CN 115317940 A CN115317940 A CN 115317940A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/24—Evaporating by bringing a thin layer of the liquid into contact with a heated surface to obtain dry solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
- B01D1/222—In rotating vessels; vessels with movable parts
- B01D1/223—In rotating vessels; vessels with movable parts containing a rotor
- B01D1/225—In rotating vessels; vessels with movable parts containing a rotor with blades or scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/0804—Cleaning containers having tubular shape, e.g. casks, barrels, drums
- B08B9/0808—Cleaning containers having tubular shape, e.g. casks, barrels, drums by methods involving the use of tools, e.g. by brushes, scrapers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a preparation device of a lithium nickel manganese oxide lithium battery cathode material, which relates to the field of battery production and comprises a box body and a heating coil arranged on the outer wall of the box body, wherein a disc, a driving mechanism, a lifting mechanism and a scraping mechanism are arranged in the box body; stirring rods are arranged on two sides of the bottom of the disc along the axial direction of the box body, and a plurality of stirring strips are arranged outside the stirring rods; the driving mechanism is arranged on the box body and is used for driving the disc to rotate; the lifting mechanism comprises two screw rods fixedly connected to the top ends of the two stirring rods respectively and a linkage assembly for driving the two screw rods to move vertically respectively; the scraping mechanism comprises two scraping barrels which are respectively arranged on two sides of the bottom of the disc; this preparation facilities of nickel lithium manganate lithium battery cathode material can be when stirring the evaporation to dryness to solution, clears up remaining material on box inner wall and the puddler to avoided the easy scale deposit problem of box inner wall and puddler outer wall after long-time the use.
Description
Technical Field
The invention relates to a battery production technology, in particular to a preparation device of a lithium nickel manganese oxide lithium battery positive electrode material.
Background
Due to the increasing energy crisis, people are actively searching and researching new green clean energy, including super capacitors, lithium ion batteries, sodium ion batteries and the like, wherein the Lithium Ion Battery (LIB) becomes one of the most popular energy storage devices due to the advantages of high specific energy, low self-discharge rate, small environmental pollution and the like, and the LIB is widely applied to the fields of electronic products, electric bicycles, multifunctional automobiles, aeronautics and medicine and the like at present; however, the most advanced LIB at present has a little difference from the expectation of people due to limited power density and energy density, and in order to improve the energy/power density of LIB, the selection of the anode material is very important, and the specific discharge capacity and the lithium removal potential of the LIB are both improved. The spinel type lithium nickel manganese oxide has the advantages of high working voltage (4.7V), high energy density, low preparation cost and the like as one of high-voltage anode materials with the most application prospect, the energy density of the spinel type lithium nickel manganese oxide reaches 650W h/kg, and is obviously higher than that of the traditional materials, such as lithium cobaltate (518W h/kg), lithium manganese oxide (400W h/kg) and lithium iron phosphate (495W h/kg), inert atmosphere protection is not needed in the preparation process of the lithium nickel manganese oxide anode material, and the lithium nickel manganese oxide anode material can be directly calcined and prepared under the air atmosphere, so the material is very suitable for large-scale scientific research production and has great value and application prospect.
When current preparation facilities stirs the evaporation to dryness to nickel lithium manganate lithium cell cathode material preparation solution, the material is remained easily on device inner wall and puddler outer wall, and is inconvenient to be cleared up, and then leads to its easy scale deposit, influences this preparation facilities's long-term use, and for this reason, this scheme has provided a nickel lithium manganate lithium cell cathode material's preparation facilities.
Disclosure of Invention
The invention aims to provide a preparation device of a lithium nickel manganese oxide lithium battery positive electrode material, which aims to overcome the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: a preparation device for a lithium nickel manganese oxide lithium battery cathode material comprises a box body and a heating coil arranged on the outer wall of the box body, wherein a disc, a driving mechanism, a lifting mechanism and a scraping mechanism are arranged inside the box body;
stirring rods are arranged on two sides of the bottom of the disc along the axial direction of the box body, and a plurality of stirring strips are arranged outside the stirring rods;
the driving mechanism is arranged on the box body and is used for driving the disc to rotate;
the lifting mechanism comprises two screw rods fixedly connected to the top ends of the two stirring rods respectively and a linkage assembly for driving the two screw rods to vertically move respectively;
scrape the material mechanism including installing respectively two in disc bottom both sides scrape the feed cylinder, scrape the inner wall of feed cylinder and the outer wall of puddler all with install the outer wall looks adaptation at the outside a plurality of stirring strips of puddler.
Further, install reinforced leak pipe on the outer wall of box one side, the detachable tube cap is installed at the top of reinforced leak pipe, the one end and the box inside of reinforced leak pipe are linked together, the feed opening has been seted up to the bottom of box, the spiro union has sealed lid on the inner wall of feed opening, the bottom of box has a plurality of column bases along its radial rigid coupling.
Further, the linkage subassembly includes that the spiro union is respectively at two screw sleeves of two screw rod outsides, cup joints respectively at the outside first gear of two screw sleeves, the internal tooth arc of rigid coupling on the box inner wall and installs the outside tooth arc in the box, the internal tooth arc cooperatees with two first gears respectively, the outside tooth arc is located the inboard of first gear, and the outside tooth arc cooperatees with two first gears respectively, the equal rigid coupling in both sides at outside tooth arc top has the dead lever with box top inner wall looks rigid coupling.
Furthermore, the two sides of the top of the disc are fixedly connected with first supporting blocks of an L-shaped structure, and the bottom ends of the two thread sleeves are respectively and rotatably connected to the tops of the two first supporting blocks.
Further, the screw rod runs through the swivel nut setting, the top rigid coupling of screw rod has the guide block, the inside of guide block has the guide bar along screw rod axial direction sliding connection, the top rigid coupling of guide bar has first slider, first slider is along box circumference sliding connection on the inner wall at its top.
Further, scrape material mechanism still include along the puddler radially respectively the rigid coupling scrape the strip at two first of two puddler bottoms and respectively the rigid coupling scrape the strip at two seconds of disc bottom both sides, the bottom of first scraping the strip and the inner wall butt of bottom half, the outer wall of strip and the inner wall butt of box are scraped to the second, two the first one end of scraping the strip and keeping away from mutually all seted up scrapes the identical groove of scraping of strip outer wall with the second, scrape the inner wall in groove and the outer wall butt of scraping the strip, two with the second all be connected with elastic mechanism on the puddler.
Furthermore, the stirring rod is of a hollow structure, an adaptive groove is formed in the bottom of the first scraping strip, the elastic mechanism comprises a second sliding block which is axially connected inside the elastic mechanism in a sliding manner along the stirring rod, a sliding rod fixedly connected to the bottom of the second sliding block, a spring fixedly connected to the top of the second sliding block and a third scraping strip which is fixedly connected to one end of the sliding rod and extends to the inner end of the adaptive groove, the third scraping strip is matched with the adaptive groove, and the other end of the spring is fixedly connected with the inner wall of the top of the stirring rod.
Further, actuating mechanism is including installing the motor at the box top and the drive shaft of rigid coupling in motor output shaft one end, the top rigid coupling of box has the second supporting shoe of L type structure, the motor is installed on the second supporting shoe, the drive shaft sets up along box axial direction, and the bottom of drive shaft extends to the outside of box, the disc cup joints the outside at the drive shaft.
Further, the inside of disc runs through the air channel of seting up ring type structure, the rigid coupling has the filter screen on the inner wall of air channel, the top of filter screen still is provided with by the drive shaft drive, in order to be used for accelerating steam emission's exhaust mechanism, exhaust mechanism includes along drive shaft axial direction rigid coupling at the inside aiutage at box top, along aiutage axial direction distribution and rotate the first transmission shaft of connecting on its top inner wall, cup joint respectively in the outside and the outside two second gears of first transmission shaft of drive shaft, the flabellum of rigid coupling in first transmission shaft bottom and install the blast pipe on aiutage one side outer wall, the aiutage is located the filter screen directly over, the bottom of aiutage extends to the inside of box, two the second gear meshes mutually, and all is located the top of aiutage, still be connected with on the drive shaft by the swivel nut drive, in order to be used for carrying out the clearance mechanism of clearance to the filter screen bottom.
Further, the drive shaft is hollow mechanism, clearance mechanism is including rotating the second transmission shaft of connection on the inner wall of drive shaft top, rigid coupling at the brush strip that the second transmission shaft extends to filter screen bottom one end, rotate the third transmission shaft of connection on the inner wall of drive shaft near swivel nut one side and cup joint respectively outside the second transmission shaft with two outside first bevel gears of third transmission shaft, two first bevel gear meshes mutually, the bottom butt of brush strip and filter screen, the one end of third transmission shaft extends to the outside of drive shaft, clearance mechanism still includes cup joints respectively outside the third transmission shaft and outside two second bevel gears of swivel nut, two second bevel gear meshes mutually.
Compared with the prior art, the device for preparing the lithium nickel manganese oxide lithium battery cathode material, provided by the invention, has the advantages that through the matching of the driving mechanism, the lifting mechanism and the scraping mechanism, the solution can be stirred and evaporated to dryness, and meanwhile, the residual materials on the inner wall of the box body and the stirring rod can be cleaned, so that the problem that the inner wall of the box body and the outer wall of the stirring rod are easy to scale after being used for a long time is solved, in addition, the speed of steam discharge in the box body can be accelerated, and meanwhile, the powder is prevented from being discharged to the outside of the box body.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic cross-sectional view of the interior of the overall structure provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a scraping mechanism provided in the embodiment of the present invention;
FIG. 3 is a schematic view of a partial structure of a linkage assembly according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a resilient mechanism according to an embodiment of the present invention;
fig. 5 is a schematic partial structure diagram of a cleaning mechanism according to an embodiment of the present invention.
Description of reference numerals:
1. a box body; 2. a disc; 3. a stirring rod; 4. stirring strips; 5. a screw; 6. scraping the material barrel; 7. a heating coil; 8. a feeding leak pipe; 9. a sealing cover; 10. a column shoe; 11. a threaded sleeve; 12. a first gear; 13. an inner tooth arc; 14. an outer tooth arc; 15. a guide block; 16. a guide bar; 17. a first slider; 18. a first wiper strip; 19. a second wiper strip; 20. a second slider; 21. a slide bar; 22. a spring; 23. a third scraping bar; 24. a motor; 25. a drive shaft; 26. a filter screen; 27. an exhaust funnel; 28. a first transmission shaft; 29. a second gear; 30. a fan blade; 31. an exhaust pipe; 32. a second transmission shaft; 33. brushing the strip; 34. a third drive shaft; 35. a first bevel gear; 36. a second bevel gear.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1-4, a device for preparing a lithium nickel manganese oxide lithium battery cathode material comprises a box body 1 and a heating coil 7 arranged on the outer wall of the box body 1, wherein a disc 2, a driving mechanism, a lifting mechanism and a scraping mechanism are arranged inside the box body 1, the outer wall of the disc 2 is abutted to the inner wall of the box body 1, a feeding leakage pipe 8 is arranged on the outer wall of one side of the box body 1, a detachable pipe cover is arranged at the top of the feeding leakage pipe 8, one end of the feeding leakage pipe 8 is communicated with the inside of the box body 1, a feed opening is formed in the bottom of the box body 1, a sealing cover 9 is screwed on the inner wall of the feed opening, a plurality of column feet 10 are fixedly connected to the bottom of the box body 1 along the radial direction of the bottom of the box body, a solution is added into the box body 1 through the feeding leakage pipe 8, the feed pipe 8 is sealed through the pipe cover after the solution is added, the sealing cover 9 is firstly screwed down during feeding, the feed opening is opened, and the column feet 10 are arranged to enable the box body 1 to have a certain space away from the ground, so that the feed opening is convenient for feeding;
the stirring rods 3 are arranged on two sides of the bottom of the disc 2 along the axial direction of the box body 1, the stirring strips 4 are uniformly distributed on the outer portion of the stirring rods 3 along the radial direction, the stirring strips 4 are arranged on the outer portion of the stirring rods 3, the lifting mechanism comprises two screw rods 5 fixedly connected to the top ends of the two stirring rods 3 respectively and a linkage assembly for driving the two screw rods 5 to vertically move respectively, the linkage assembly comprises two screw sleeves 11 respectively screwed on the outer portions of the two screw rods 5, first gears 12 respectively sleeved on the outer portions of the two screw sleeves 11, inner tooth arcs 13 fixedly connected to the inner wall of the box body 1 and outer tooth arcs 14 arranged inside the box body 1, the inner tooth arcs 13 are respectively matched with the two first gears 12, the outer tooth arcs 14 are positioned on the inner sides of the first gears 12 and respectively matched with the two first gears 12, fixing rods fixedly connected to the inner wall of the top of the box body 1 are fixedly connected to two sides of the top of the outer tooth arcs 14, the screw 5 penetrates through the screw sleeve 11, the top end of the screw 5 is fixedly connected with a guide block 15, the inside of the guide block 15 is connected with a guide rod 16 in a sliding manner along the axial direction of the screw 5, the top end of the guide rod 16 is fixedly connected with a first slide block 17, the guide rod 16 drives the first slide block 17 to do circumferential movement along the inner wall of the top of the box body 1 in the process of revolving movement by taking the axis of the disc 2 as the center, the first slide block 17 is connected on the inner wall of the top of the box body 1 in a sliding manner along the circumferential direction, the disc 2 drives the two screw sleeves 11 to do revolving movement by taking the axis of the disc 2 as the center in the process of rotating, in the process, when a first gear 12 outside the screw sleeve 11 is meshed with the inner tooth arcs 13, the screw sleeve 11 is driven to rotate, the screw 5 is further driven to move upwards, the guide block 15 moves upwards along the outer wall of the guide rod 16, and the stirring rod 3 and the stirring bar 4 move upwards along the inner wall of the material scraping barrel 6, when the first gear 12 outside the threaded sleeve 11 is meshed with the outer toothed arc 14, the threaded sleeve 11 is driven to rotate in the opposite direction, the screw rod 5 is driven to move downwards, the guide block 15 moves downwards along the outer wall of the guide rod 16, and the stirring rod 3 and the stirring strip 4 move downwards along the inner wall of the material scraping barrel 6;
two sides of the top of the disc 2 are fixedly connected with first supporting blocks of an L-shaped structure, the bottom ends of the two thread sleeves 11 are respectively and rotatably connected to the tops of the two first supporting blocks, and the first supporting blocks are used for supporting the thread sleeves 11;
the scraping mechanism comprises two scraping cylinders 6 which are respectively arranged on two sides of the bottom of the disc 2, a screw rod 5 sequentially penetrates through the disc 2 and the scraping cylinders 6, the inner wall of each scraping cylinder 6 and the outer wall of each stirring rod 3 are matched with the outer walls of a plurality of stirring strips 4 arranged outside the stirring rods 3, the scraping mechanism further comprises two first scraping strips 18 which are fixedly connected to the bottom ends of the two stirring rods 3 respectively along the radial direction of the stirring rods 3 and two second scraping strips 19 which are fixedly connected to two sides of the bottom of the disc 2 respectively, the bottoms of the first scraping strips 18 are abutted to the inner wall of the bottom of the box body 1, the outer wall of each second scraping strip 19 is abutted to the inner wall of the box body 1, one ends, far away from the two first scraping strips 18, are respectively provided with scraping grooves which are matched with the outer wall of the second scraping strip 19, the inner wall of each scraping groove is abutted to the outer wall of the second scraping strip 19, the disc 2 drives the two second scraping strips 19 to rotate along the inner wall of the box body 1 in the rotating process, so as to prevent the materials from remaining on the inner wall of the box body 1 through the friction between the stirring rods 3 and the stirring rods 3, the stirring rods 3 and the stirring rods are cleaned when the stirring rods 4 and the stirring rods are fixedly connected to the stirring rods, and the stirring rods 3, and the stirring rods are cleaned up and down;
the stirring rods 3 are of a hollow structure, adaptive grooves are formed in the bottoms of the first scraping strips 18, elastic mechanisms are connected to the two stirring rods 3 respectively, each elastic mechanism comprises a second sliding block 20 which is connected to the corresponding stirring rod 3 in a sliding mode in the axial direction, a sliding rod 21 fixedly connected to the bottom of the second sliding block 20, a spring 22 fixedly connected to the top of the second sliding block 20 and a third scraping strip 23 fixedly connected to one end, extending to the inner end of the adaptive groove, of the sliding rod 21, the third scraping strip 23 is matched with the adaptive grooves, the other end of the spring 22 is fixedly connected with the inner wall of the top of the stirring rod 3, when the stirring rods 3 move upwards, the second sliding blocks 20 are driven to move downwards along the inner walls of the stirring rods 3 under the elastic action of the springs 22, the sliding rods 21 are used for driving the third scraping strips 23 to be always abutted to the inner wall of the bottom of the box body 1, and therefore the third scraping strips 23 are ensured to be capable of always scraping the inner wall of scraping the bottom of the box body 1;
actuating mechanism installs on box 1, in order to be used for driving disc 2 and rotate, actuating mechanism is including installing motor 24 and the drive shaft 25 of rigid coupling in motor 24 output shaft one end at box 1 top, the top rigid coupling of box 1 has the second supporting shoe of L type structure, motor 24 installs on the second supporting shoe, drive shaft 25 sets up along 1 axial direction of box, and the bottom of drive shaft 25 extends to the outside of box 1, disc 2 cup joints the outside at drive shaft 25, drive shaft 25 and rotate through its output shaft of starter motor 24 cooperation, and then drive disc 2 and rotate.
Example two:
referring to fig. 1, the embodiment provides a technical solution based on the first embodiment: the inside of disc 2 runs through the air channel of seting up ring type structure, the rigid coupling has filter screen 26 on the inner wall of air channel, the top of filter screen 26 still is provided with and is driven by drive shaft 25, in order to be used for accelerating the exhaust mechanism of steam discharge, exhaust mechanism includes along the inside aiutage 27 of drive shaft 25 axial direction rigid coupling at box 1 top, along aiutage 27 axial direction distribution and rotate the first transmission shaft 28 of connecting on its top inner wall, cup joint respectively outside drive shaft 25 and outside two second gear 29 of first transmission shaft 28, the flabellum 30 of rigid coupling at first transmission shaft 28 bottom and install the blast pipe 31 on the outer wall of one side of aiutage 27, aiutage 27 is located directly over filter screen 26, the bottom of aiutage 27 extends to the inside of box 1, two second gear 29 mesh, and all are located the top of aiutage 27, the air channel, the setting of aiutage 27 and blast pipe 31 is the emission of the inside steam of box 1, the setting of filter screen 26 is used for preventing the powder from discharging to the box 1 outside, in the rotation of drive shaft 25 in-process, through the effect of meshing between two second gear 29, and then drive first transmission shaft 28, thereby drive the transmission shaft 28, make the inside aiutage 30 rotate, thereby make the inside aiutage 30 rotate and make the box 1 produce the suction outside make the suction of box produce the suction fast.
Example three:
referring to fig. 1 and fig. 5, the present embodiment provides a technical solution on the basis of the first embodiment and the second embodiment: the driving shaft 25 is further connected with a cleaning mechanism driven by the screw sleeve 11 and used for cleaning the bottom of the filter screen 26, the driving shaft 25 is a hollow mechanism, the cleaning mechanism comprises a second transmission shaft 32 rotatably connected to the inner wall of the top of the driving shaft 25, a brush bar 33 fixedly connected to the second transmission shaft 32 and extending to one end of the bottom of the filter screen 26, a third transmission shaft 34 rotatably connected to the inner wall of one side of the driving shaft 25, close to the screw sleeve 11, and two first bevel gears 35 respectively sleeved on the outer portion of the second transmission shaft 32 and the outer portion of the third transmission shaft 34, the two first bevel gears 35 are meshed with each other, when the first gear 12 is respectively meshed with the second bevel gear 13 and the outer bevel gear 14 to drive the screw sleeve 11 to rotate, the third transmission shaft 34 is driven to rotate through the meshing effect between the two inconvenient bevel gears 36, the second bevel gears 32 are driven to rotate through the meshing effect between the two first bevel gears 35, the second bevel gears 32 are driven to rotate, and the brush bar 33 is driven to rub the bottom of the filter screen 26 to clean the powder, thereby avoiding the problem that the filter screen 26 is adhered to the bottom.
Example four:
a preparation method of a lithium nickel manganese oxide lithium battery positive electrode material comprises the following steps:
s1, weighing Li2CO, niO and MnO according to a molar ratio of 0.5: 1.5, adding the Li2CO, niO and MnO into a ball milling tank (3% of Li2CO3 is required to be excessive, so as to compensate for lithium loss in the high-temperature calcination process), simultaneously putting ball milling beads and absolute ethyl alcohol into the ball milling tank, putting the ball milling tank into a ball milling instrument, rotating 0.5 h at 200 r/min, and then rotating 4h at 400 r/min;
s2, putting the obtained material into a 105 ℃ oven, drying 4h, putting the dried material into a mortar for grinding, putting the ground material into a muffle furnace, calcining in an air atmosphere, keeping the temperature at 500 ℃ for 250 min, keeping the temperature at 850 ℃ for 8 h, naturally cooling to room temperature at the heating rates of 5 ℃/min to obtain a LiNi0.5Mn1.5O (4 LNMO) material, and marking as Pristine LNMO;
s3, coating SmPO4 on the surface of the LNMO material by a hydrothermal method, adding Sm (NO 3) 3.6H 2O and 2 g of Pristine LNMO material into deionized water, stirring and dissolving, dissolving NH4H2PO4 into the deionized water, and then dropwise adding the solution into the previous mixed solution at a constant speed for 2H;
s4, pouring the obtained mixed solution into a hydrothermal reaction kettle with a polytetrafluoroethylene lining, and keeping the temperature of the hydrothermal reaction kettle at 6h in a 150-DEG C drying oven;
s5, pouring the liquid into a box body 1 at 90 ℃, stirring and evaporating to dryness to obtain powder;
s6, drying the obtained powder in an oven at 80 ℃ for 10 h, then placing the powder in a tube furnace, calcining 4h at 450 ℃, wherein the heating rate is 3 ℃/min, the obtained material is marked as LNMO @ SP-0.5 (the mass fraction of SmPO4 is 0.5%), and preparing the LNMO anode materials with different SmPO4 coating amounts (the mass fractions are 0.25%, 1% and 2%) according to the method.
The working principle is as follows: when the device is used, firstly, a worker adds a solution into the box body 1 through the feeding leakage pipe 8, after the solution is added, the feeding leakage pipe 8 is sealed through the pipe cover, the solution in the box body 1 is heated through the heating coil 7, then the driving shaft 25 is driven to rotate through the starting motor 24 matched with the output shaft of the starting motor to drive the disc 2 to rotate, so that the stirring rod 3 and the stirring bar 4 outside the stirring rod 3 are driven to stir the solution in the box body 1, the disc 2 drives the two screw sleeves 11 to do revolution motion by taking the axis of the disc 2 as the center in the rotating process, in the process, when the first gear 12 outside the screw sleeve 11 is meshed with the inner arc 13, the screw sleeve 11 is driven to rotate, so that the screw rod 5 is driven to move upwards, the guide block 15 moves upwards along the outer wall of the guide rod 16, and the stirring rod 3 and the stirring bar 4 move upwards along the inner wall of the scraping cylinder 6, when the first gear 12 outside the threaded sleeve 11 is engaged with the outer toothed arc 14, the threaded sleeve 11 is driven to rotate in the opposite direction, and further the screw 5 is driven to move downwards, the guide block 15 moves downwards along the outer wall of the guide rod 16, the stirring rod 3 and the stirring strip 4 move downwards along the inner wall of the scraping cylinder 6, the materials outside the stirring rod 3 and the stirring strip 4 are cleaned away through the friction effect of the stirring rod 3, the stirring strip 4 and the scraping cylinder 6, the two second scraping strips 19 are driven to rotate along the inner side wall of the box 1 in the rotation process of the disc 2, so that the materials are prevented from remaining on the inner wall of the box 1, meanwhile, the inner wall at the bottom of the box 1 is scraped through the first scraping strip 18 at the bottom of the stirring rod 3, the first transmission shaft 28 is driven to rotate through the engagement effect between the two second gears 29 in the rotation process of the driving shaft 25, and further the fan blades 30 are driven to rotate, thereby make the inside negative pressure suction that produces of aiutage 27, and then make steam discharge to box 1 outside fast, in addition, swivel nut 11 is when rotating, through the effect of meshing between two second bevel gears 36, drive third transmission shaft 34 and rotate, through the effect of meshing between two first bevel gears 35, drive second transmission shaft 32 and rotate, and then drive brush strip 33 and rotate, through the effect of brush strip 33 and filter screen 26 bottom friction, clear up the powder of filter screen 26 bottom, thereby the problem of inconvenient clearance of going on filter screen 26 has been avoided the powder to adhere to.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the invention.
Claims (10)
1. The preparation device of the lithium nickel manganese oxide lithium battery cathode material comprises a box body (1) and a heating coil (7) arranged on the outer wall of the box body (1), and is characterized in that a disc (2), a driving mechanism, a lifting mechanism and a scraping mechanism are arranged in the box body (1);
stirring rods (3) are arranged on two sides of the bottom of the disc (2) along the axial direction of the box body (1), and a plurality of stirring strips (4) are arranged outside the stirring rods (3);
the driving mechanism is arranged on the box body (1) and is used for driving the disc (2) to rotate;
the lifting mechanism comprises two screw rods (5) fixedly connected to the top ends of the two stirring rods (3) respectively and a linkage assembly for driving the two screw rods (5) to move vertically respectively;
scrape material mechanism including installing two of disc (2) bottom both sides respectively and scrape feed cylinder (6), scrape the outer wall of the inner wall of feed cylinder (6) and puddler (3) all with install the outer wall looks adaptation in a plurality of stirring strip (4) of puddler (3) outside.
2. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 1, wherein a feeding leakage pipe (8) is installed on the outer wall of one side of the box body (1), a detachable pipe cover is installed at the top of the feeding leakage pipe (8), one end of the feeding leakage pipe (8) is communicated with the inside of the box body (1), a discharging opening is formed in the bottom of the box body (1), a sealing cover (9) is screwed on the inner wall of the discharging opening, and a plurality of column feet (10) are fixedly connected to the bottom of the box body (1) along the radial direction of the bottom.
3. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 1, wherein the linkage assembly comprises two screw sleeves (11) respectively screwed outside the two screws (5), first gears (12) respectively sleeved outside the two screw sleeves (11), an inner toothed arc (13) fixedly connected to the inner wall of the box body (1), and an outer toothed arc (14) installed inside the box body (1), wherein the inner toothed arc (13) is respectively matched with the two first gears (12), the outer toothed arc (14) is located on the inner side of the first gears (12), the outer toothed arc (14) is respectively matched with the two first gears (12), and fixing rods fixedly connected with the inner wall of the top of the box body (1) are fixedly connected to two sides of the top of the outer toothed arc (14).
4. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 3, wherein the first supporting blocks with L-shaped structures are fixedly connected to two sides of the top of the disc (2), and the bottom ends of the two screw sleeves (11) are respectively and rotatably connected to the tops of the two first supporting blocks.
5. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 3, wherein the screw (5) penetrates through the threaded sleeve (11), a guide block (15) is fixedly connected to the top end of the screw (5), a guide rod (16) is slidably connected to the inside of the guide block (15) along the axial direction of the screw (5), a first sliding block (17) is fixedly connected to the top end of the guide rod (16), and the first sliding block (17) is slidably connected to the inner wall of the top of the box (1) along the circumferential direction of the box.
6. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 1, wherein the scraping mechanism further comprises two first scraping strips (18) fixedly connected to the bottom ends of the two stirring rods (3) respectively along the radial direction of the stirring rods (3) and two second scraping strips (19) fixedly connected to two sides of the bottom of the disc (2) respectively, the bottom of each first scraping strip (18) is abutted to the inner wall of the bottom of the box body (1), the outer wall of each second scraping strip (19) is abutted to the inner wall of the box body (1), two scraping grooves matched with the outer wall of each second scraping strip (19) are formed in one ends, away from each first scraping strip (18), the inner walls of the scraping grooves are abutted to the outer walls of the second scraping strips (19), and elastic mechanisms are connected to the two stirring rods (3).
7. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 6, wherein the stirring rod (3) is of a hollow structure, an adaptive groove is formed in the bottom of the first scraping strip (18), the elastic mechanism comprises a second sliding block (20) which is axially slidably connected to the stirring rod (3), a sliding rod (21) which is fixedly connected to the bottom of the second sliding block (20), a spring (22) which is fixedly connected to the top of the second sliding block (20), and a third scraping strip (23) which is fixedly connected to one end, extending to the inner end of the adaptive groove, of the sliding rod (21), the third scraping strip (23) is matched with the adaptive groove, and the other end of the spring (22) is fixedly connected to the inner wall of the top of the stirring rod (3).
8. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 1, wherein the driving mechanism comprises a motor (24) mounted at the top of the box body (1) and a driving shaft (25) fixedly connected to one end of an output shaft of the motor (24), a second supporting block of an L-shaped structure is fixedly connected to the top of the box body (1), the motor (24) is mounted on the second supporting block, the driving shaft (25) is arranged along the axial direction of the box body (1), the bottom end of the driving shaft (25) extends to the outside of the box body (1), and the disc (2) is sleeved on the outside of the driving shaft (25).
9. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 8, wherein a ventilation groove with a circular ring structure is formed in the disc (2) in a penetrating manner, a filter screen (26) is fixedly connected to the inner wall of the ventilation groove, an exhaust mechanism driven by a drive shaft (25) and used for accelerating steam emission is further arranged above the filter screen (26), the exhaust mechanism comprises an internal exhaust cylinder (27) fixedly connected to the top of the box (1) along the axial direction of the drive shaft (25), a first drive shaft (28) rotationally connected to the inner wall of the top of the exhaust cylinder (27) and distributed along the axial direction of the exhaust cylinder (27), two second gears (29) respectively sleeved outside the drive shaft (25) and outside the first drive shaft (28), fan blades (30) fixedly connected to the bottom end of the first drive shaft (28), and an exhaust pipe (31) mounted on the outer wall of one side of the exhaust cylinder (27), the exhaust cylinder (27) is located directly above the filter screen (26), the bottom end of the exhaust cylinder (27) extends to the inside of the box (1), the two second gears (29) are meshed and located above the exhaust pipe (27) and are located above the exhaust cylinder (27), and the drive shaft (11) is used for cleaning the screw sleeve for cleaning the bottom of the drive shaft (11).
10. The device for preparing the lithium nickel manganese oxide lithium battery cathode material according to claim 9, wherein the driving shaft (25) is a hollow mechanism, the cleaning mechanism comprises a second transmission shaft (32) rotatably connected to the inner wall of the top of the driving shaft (25), a brush strip (33) fixedly connected to the second transmission shaft (32) and extending to one end of the bottom of the filter screen (26), a third transmission shaft (34) rotatably connected to the inner wall of the driving shaft (25) on the side close to the threaded sleeve (11), and two first bevel gears (35) respectively sleeved on the outer portion of the second transmission shaft (32) and the outer portion of the third transmission shaft (34), the two first bevel gears (35) are engaged, the brush strip (33) is abutted against the bottom of the filter screen (26), one end of the third transmission shaft (34) extends to the outer portion of the driving shaft (25), the cleaning mechanism further comprises two second bevel gears (36) respectively sleeved on the outer portion of the third transmission shaft (34) and the outer portion of the threaded sleeve (11), and the two second bevel gears (36) are engaged.
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| CN115317940B (en) | 2022-12-23 |
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