CN116354388A - Preparation device and preparation method of lithium ion battery cathode material lithium titanate - Google Patents
Preparation device and preparation method of lithium ion battery cathode material lithium titanate Download PDFInfo
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- CN116354388A CN116354388A CN202310266576.1A CN202310266576A CN116354388A CN 116354388 A CN116354388 A CN 116354388A CN 202310266576 A CN202310266576 A CN 202310266576A CN 116354388 A CN116354388 A CN 116354388A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 33
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 32
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 31
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 20
- 239000010406 cathode material Substances 0.000 title claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 133
- 239000000463 material Substances 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 239000007773 negative electrode material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011268 mixed slurry Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- -1 lithium titanate Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010532 solid phase synthesis reaction Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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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
- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G23/00—Compounds of titanium
- C01G23/003—Titanates
- C01G23/005—Alkali titanates
-
- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a preparation device and a preparation method of lithium ion battery cathode material lithium titanate, and belongs to the technical field of lithium titanate production. The invention comprises a first heating cylinder, a second heating cylinder and a driver, wherein the first heating cylinder and the second heating cylinder are in transmission connection through a support ring; the inner walls of the first heating cylinder body and the second heating cylinder body are provided with blocking plates which are arranged in a threaded manner; the end parts of the first heating cylinder body, which are connected with the second heating cylinder body, are respectively provided with an external gear sleeve, the driver comprises a first driving gear and a second driving gear, the two external gear sleeves are respectively meshed with the first driving gear and the second driving gear, and the driver further comprises a driving wheel. According to the invention, the first heating cylinder body and the second heating cylinder body are heated in a distributed manner, can rotate independently, and control the corresponding temperature, so that the baking efficiency of the materials is improved, and meanwhile, the baking quality of the materials is improved.
Description
Technical Field
The invention belongs to the technical field of lithium titanate production, and particularly relates to a preparation device and a preparation method of lithium titanate serving as a negative electrode material of a lithium ion battery.
Background
The lithium titanate is an excellent lithium ion battery cathode material, most of the lithium titanate is prepared by adopting a solid phase synthesis method, the principle and the process are relatively simple, mass production is easy to realize, generally, a titanium source is prepared by mixing and grinding Ti02 with an anatase crystal form and a lithium source, and the lithium titanate is obtained by sintering at 800-1000 ℃ for 12-24 hours, but is limited by the diffusion speed of the lithium source in Ti02 crystals, and long-time sintering is needed;
when the lithium titanate is sintered, the rotary kiln is required to rotate at a low speed for 12-24 hours, so that the materials in the rotary kiln are prevented from being conveyed to an outlet material port of the rotary kiln too quickly, the material in the rotary drum is enabled to be low in turnover efficiency due to the fact that the materials are rotated at the low speed, the sintering is uneven, and the sintering time of the materials in the rotary kiln is prolonged.
Disclosure of Invention
The invention aims to provide a preparation device and a preparation method of lithium titanate serving as a negative electrode material of a lithium ion battery.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a preparation device of lithium ion battery cathode material lithium titanate, which comprises a first heating cylinder and a second heating cylinder, wherein the first heating cylinder and the second heating cylinder are communicated and are arranged in an integral inclined way, and the first heating cylinder and the second heating cylinder are in transmission connection through a supporting ring; the inner walls of the first heating cylinder body and the second heating cylinder body are provided with blocking plates which are arranged in a threaded manner;
the end parts of the first heating cylinder body and the end parts of the second heating cylinder body, which are connected, are respectively provided with an external gear sleeve,
the driving device comprises a first driving gear, a second driving gear, a first driving gear and a second driving gear, wherein the two outer gear sleeves are respectively meshed with the first driving gear and the second driving gear;
the friction ring is sleeved on the supporting ring and is attached to the outer side face of the driving wheel, the supporting ring is provided with an inner ring, and the end part of the inner ring is sleeved with a heating cylinder.
The support ring is provided with an outer ring, one end of the outer ring is in clearance connection with the first heating cylinder body, the other end of the outer ring is in clearance connection with the second heating cylinder body, the second heating cylinder body is internally provided with a mounting ring, the heating cylinder comprises an inner cylinder and an outer cylinder, the inner cylinder is fixed in the mounting ring, and one end of the outer cylinder is arranged in the inner ring;
the inner cylinder is provided with at least two rows of flame leakage holes arranged along the axial direction of the inner cylinder, the outer cylinder is provided with at least two hole rows, the hole rows are spirally distributed along the surface of the outer cylinder, each hole row comprises a first flame outlet hole and a second flame outlet hole, and the diameters of the first flame outlet hole and the second flame outlet hole are different.
Further, a baffle is arranged in the inner ring, a first middle hole is formed in the middle of the baffle, a circle of first through holes are formed in the baffle, a heat conducting rod is arranged on each first through hole, and one end of the heat conducting rod extends into the first heating cylinder.
Further, install the mounting bracket on the baffle, install first reset spring in the mounting bracket, the tip of first reset spring is provided with the reset plate, reset plate movable fit is in first reset spring.
Further, the first driving gear is provided with a stepped hole, a second through hole is formed in the stepped surface of the stepped hole, the second driving gear and the first driving gear are identical in structure, a transmission shaft is installed in the first driving gear, and one end of the transmission shaft is connected with the motor.
Further, the transmission shaft comprises a second middle rod and a second circular ring arranged on the second middle rod, a circle of second limiting rod is arranged on the second circular ring, and the second limiting rod is movably matched with a second through hole on the first driving gear.
Further, a third through hole is formed in the driving wheel, a circle of notch is formed in each of two ends of the third through hole, a corresponding notch limiting strip is arranged on the second middle rod, and an inward concave ring is arranged in the middle of the third through hole.
Further comprises a driving shaft, the driving shaft comprises a first middle rod and a first circular ring, the first circular ring is sleeved on the first middle rod, a first limiting rod is arranged on the first circular ring,
the end of the second middle rod is provided with a blind hole, the blind hole is provided with a second reset spring, the end of the first middle rod is provided with a push rod, the push rod is abutted against the second reset spring, the end of the first middle rod provided with the push rod is provided with a circle of first limiting rod, and the other end of the first middle rod is connected with a linear driver.
Further, the motor and the linear driver are respectively arranged on an installation frame, the installation frame is provided with a box body, the top surface on the box body is provided with a notch, the edge of the top plate is provided with an installation plate, the bottom of the box body is provided with a connecting frame, and the two installation frames are connected through the connecting frame.
The preparation method of the lithium ion battery cathode material lithium titanate is characterized in that the flame is controlled to control the temperature in the first heating cylinder and the second heating cylinder.
The invention has the following beneficial effects:
the invention carries out distributed heating on the first heating cylinder body and the second heating cylinder body, can independently rotate and control the corresponding temperature, improves the baking efficiency of the materials and the baking quality of the materials,
when the outer cylinder rotates along with the supporting ring, flame sprayed on the inner cylinder is sprayed out from the first flame outlet hole, the flame leakage hole or the second flame outlet hole and the flame leakage hole which are briefly communicated, and enters the second heating cylinder to directly bake materials, wherein the baking is intermittent baking, or the inner cylinder and the outer cylinder are closed, and heat conduction is carried out through the inner cylinder and the outer cylinder, so that the temperature in the second heating cylinder is kept at a preset temperature, the required fuel consumption is reduced, and the heating of the materials in the first heating cylinder is accelerated.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a lithium titanate heating apparatus;
FIG. 2 is a schematic view of the internal structure of a lithium titanate heating apparatus;
FIG. 3 is a schematic view of the structure of the heating cylinder and the support ring;
FIG. 4 is an enlarged view of FIG. 3A;
FIG. 5 is a schematic view of the internal structure of the support ring;
FIG. 6 is a schematic structural view of the outer tub;
FIG. 7 is a schematic structural view of an inner barrel;
FIG. 8 is a schematic diagram of a driver;
FIG. 9 is a schematic diagram of the internal structure of the driver;
FIG. 10 is a schematic view of the structure of the drive shaft;
FIG. 11 is a schematic structural view of a drive shaft;
FIG. 12 is a schematic view of a first drive gear;
FIG. 13 is a schematic view of the drive wheel;
in the drawings, the list of components represented by the various numbers is as follows:
1-bearing connecting ring, 2-first heating cylinder, 3-external gear sleeve, 4-second heating cylinder, 5-driver, 6-support semi-ring, 7-heating cylinder, 8-driving ring, 9-driving wheel, 10-mounting frame, 11-heat conducting rod, 12-supporting ring, 13-friction ring, 14-first driving gear, 15-second driving gear, 16-driving shaft, 17-transmission shaft, 201-blocking plate, 701-outer cylinder, 702-first flame outlet hole, 703-second flame outlet hole, 704-flame leakage hole, 705-inner cylinder, 901-third through hole, 902-notch, 902-concave ring, 1001-box, 1002-connecting frame, 1003-notch, 1004-mounting plate, 1005-lifting ring, 1201-telescopic rod, 1202-connecting cylinder, 1203-outer ring, 1204-connecting rod, 1205-inner ring, 1206-first through hole, 1207-first middle hole, 1208-baffle, 1209-first return spring, 1210-return plate, 1211-mounting bracket, 1401-second through hole, 1402-stepped hole, 1601-ejector rod, 1602-protrusion, 1603-first circular ring, 1604-first limit rod, 1605-first middle rod, 1701-second middle rod, 1702-second circular ring, 1703-second limit rod, 1704-limit rod, 1705-blind hole, 1706-second return spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "open," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like indicate orientation or positional relationships, merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the components or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1-13, a preparation device of lithium titanate as a negative electrode material of a lithium ion battery is used for carrying out sectional heating calcination on mixed slurry in a rotary kiln, wherein the rotary kiln is provided with a preheating section and a heating section, preheating is carried out on the mixed slurry at 250-450 ℃, and then forming heating is carried out on the mixed slurry at 700-1000 ℃ in the other section.
Specifically, the first heating cylinder 2 is used as a preheating section, the second heating cylinder 4 is used as a forming heating section, wherein the first heating cylinder 2 and the second heating cylinder 4 are communicated and are arranged in an integral inclined way, and the inclined angle is 5-10 degrees.
Wherein, both ends of first heating barrel 2 and second heating barrel 4 all are provided with bearing go-between 1, with second heating barrel 4 kiln through bearing go-between 1, install flaming heating device and discharge chamber in the kiln head, the bearing go-between 1 at the tail end of first heating barrel 2 connects the kiln tail, kiln tail department is provided with outlet flue and feed chamber.
Specifically, when the first heating cylinder 2 and the second heating cylinder 4 are connected and then arranged between the kiln head and the kiln tail, a support semi-ring is arranged below the first heating cylinder 2 and the second heating cylinder 4, preferably, a wire winding is provided with bearings on the first heating cylinder 2 and the second heating cylinder 4, and an outer ring of each bearing is arranged on the support semi-ring.
Wherein the first heating cylinder 2 and the second heating cylinder 4 are in transmission connection through a support ring 12; wherein, the first heating cylinder 2 and the second heating cylinder 4 are driven by a driving gear respectively, so that each heating cylinder can rotate independently, that is, the material from the first heating cylinder 2 to the second heating cylinder 4 is controllable.
Preferably, the blocking plates 201 are arranged on the inner walls of the first heating cylinder 2 and the second heating cylinder 4, the blocking plates 201 are arranged in a threaded manner along the inner walls of the first heating cylinder 2 or the second heating cylinder 4, when the first heating cylinder 2 and the second heating cylinder 4 rotate forward, forward material conveying is accelerated, when the first heating cylinder 2 and the second heating cylinder 4 rotate in the opposite direction, forward material conveying can be delayed, less turnover kiln is carried out, and the material firing efficiency and quality are improved.
Correspondingly, the end parts, connected with the first heating cylinder 2 and the second heating cylinder 4, of the first heating cylinder are respectively provided with an external gear sleeve 3, the external gear sleeve further comprises a driver 5, the driver 5 comprises a first driving gear 14 and a second driving gear 15, the two external gear sleeves 3 are respectively meshed with the first driving gear 14 and the second driving gear 15, the first driving gear 14 and the second driving gear 15 of the corresponding driver 5 also provide support for the first heating cylinder 2 and the second heating cylinder 4, the driver 5 further comprises a driving wheel 9, a friction ring 13 is sleeved on the supporting ring 12, the friction ring 13 is attached to the outer side surface of the driving wheel 9, and the friction ring 13 is driven to rotate through rotation of the driving wheel 9.
The support ring 12 has an inner ring 1205, and the end of the inner ring 1205 is sleeved with a heating cylinder 7.
In addition, the support ring 12 comprises an outer ring 1203, one end of the outer ring 1203 is in gap connection with the first heating cylinder 2, the other end of the outer ring 1203 is in gap connection with the second heating cylinder 4 through a connecting rod 1204, a mounting ring is arranged in the second heating cylinder 4, the heating cylinder 7 comprises an inner cylinder 705 and an outer cylinder 701, the inner cylinder 705 is fixed in the mounting ring, and one end of the outer cylinder 701 is arranged in the inner ring 1205;
the inner cylinder 705 is provided with at least two rows of flame leakage holes 704 axially arranged along the inner cylinder 705, the outer cylinder 701 is provided with at least two rows of holes, the rows of holes are arranged in a spiral mode along the surface of the outer cylinder 701, each row of holes comprises a first flame outlet hole 702 and a second flame outlet hole 703, the diameters of the first flame outlet hole 702 and the second flame outlet hole 703 are different, specifically, as shown in fig. 7 and 8, 4 rows of flame leakage holes 704 are arranged on the surface of the inner cylinder 705, four rows of holes are arranged on the surface of the outer cylinder 701, wherein the holes on each row of holes are alternately arranged according to a first flame outlet hole section, a second flame outlet hole section, a first flame outlet hole section, a second flame outlet hole section and a first flame outlet hole section, and the first flame outlet holes are sprayed out of the inner cylinder 705 from the first flame outlet holes 702, the flame leakage holes 704 or the second flame outlet holes 703 and the flame leakage holes after being communicated in a short time when the outer cylinder 701 rotates along with the support ring 12, and enter the second heating cylinder 4 to bake the inner cylinder, or bake the inner cylinder 705 intermittently, or the inner cylinder and bake the inner cylinder 701 and the fuel consumption is kept low by the preset temperature and the preset temperature, and the temperature is kept in the outer cylinder 701 and the required to be low by the heating cylinder 701.
Specifically, a baffle 1208 is disposed in the inner ring 1205, a first middle hole 1207 is disposed in the middle of the baffle 1208, a circle of first through holes 1206 are disposed on the baffle 1208, a heat conducting rod 11 is mounted on each first through hole 1206, one end of the heat conducting rod 11 extends into the first heating cylinder 2, and when the first heating cylinder 2 is normally insulated, heating in the first heating cylinder 2 is conducted through the heat conducting rod 11, namely, heat in the second heating cylinder 4 is conducted through the heat conducting rod 11.
Further, a mounting frame 1211 is mounted on the baffle 1208, a first return spring 1209 is mounted in the mounting frame 1211, a return plate 1210 is disposed at an end of the first return spring 1209, and the return plate 1210 is movably fitted in the first return spring 1209.
In addition, when new materials are poured into the first heating cylinder 2, namely when heat needs to be rapidly supplemented in the first heating cylinder 2, the inner cylinder 705 and the outer cylinder 701 are mutually blocked in a staggered mode, so that the wind speed of a fan in the rotary kiln is increased, flames penetrate through the inner cylinder 705 and the inner ring 1205 to be directly communicated with the first heating cylinder 2, the reset plate 1210 is fixed by wind power, the inner cylinder 705 and the first heating cylinder 2 are communicated, and the materials in the first heating cylinder 2 are rapidly preheated.
A driver 5 corresponding to the external gear housing 3 and the friction ring is mounted on the mounting frame 10.
The mounting frame 10 is provided with a box 1001, a notch 1003 is formed in the top surface of the box 1001, a mounting plate 1004 is arranged on the edge of the top plate on the notch 1003, a connecting frame 1002 is arranged at the bottom of the box 1001, and the two mounting frames 10 are connected through the connecting frame 1002.
The first driving gear 14 has a stepped hole 1402, a second through hole 1401 is disposed on a stepped surface of the stepped hole 1402, the second driving gear and the first driving gear 14 have the same structure, a transmission shaft 17 is installed in the first driving gear 14, one end of the transmission shaft 17 is connected with a motor, preferably, the motor and the transmission shaft 17 are connected through a speed reducer, the speed reducer is fixed on a mounting plate 1004, the motor is installed in a box 1001, an input shaft of the speed reducer and an output shaft of the motor are driven by a chain, and the chain passes through a notch 1003.
Further, the transmission shaft 17 includes a second middle rod 1701 and a second circular ring 1702 disposed on the second middle rod 1701, a circle of second limiting rods 1703 are disposed on the second circular ring 1702, and the second limiting rods 1703 are movably matched with the second through holes 1401 on the first driving gear 14.
The driving wheel 9 is provided with a third through hole 901, two ends of the third through hole 901 are respectively provided with a circle of notch 902, the second middle rod 1701 is provided with a limit strip 1704 corresponding to the notch 902, and the middle part of the third through hole 901 is provided with a concave ring 903.
Further, the driving shaft 16 is further included, the driving shaft 16 includes a first middle rod 1605 and a first circular ring 1603, the first circular ring 1603 is sleeved on the first middle rod 1605, and a first limiting rod 1604 is arranged on the first circular ring 1603.
The end of the second middle rod 1701 is provided with a blind hole 1705, the blind hole 1705 is provided with a second reset spring 1706, the end of the first middle rod 1605 is provided with a push rod 1601, the push rod 1601 is abutted against the second reset spring 1706, the end of the first middle rod 1605 provided with the push rod 1601 is provided with a circle of first limiting rod 1604, the other end of the first middle rod 1605 is connected with a linear driver, the linear driver is arranged on the other mounting frame 10, and the driving shaft 16 is driven to move transversely through the linear driver.
When the material is normally baked, the first heating cylinder 2 and the second heating cylinder 4 rotate synchronously, at this time, the first limiting rod 1604 on the driving shaft 16 is matched with the second through hole 1401 on the second driving gear 15, the limiting bar 1602 on the driving shaft 16 is matched with the notch 902 in the driving wheel 9, the first limiting rod 1604 on the driving shaft 16 is matched with the notch 902 in the driving wheel 9, the second limiting rod 1703 is matched with the second through hole 1401 on the first driving gear 14, the limiting bar 1704 is matched with the notch 902 in the driving wheel 9, and the first driving gear 14, the second driving gear 15 and the driving wheel 9 rotate coaxially when the motor works.
When the heating of the materials in the first heating cylinder 2 is quickened, the first heating cylinder 2 rotates, the second heating cylinder 4 does not rotate, at this moment, the driving shaft 16 is controlled to move through the linear driver, the first limiting rod 1604 and the second through hole 1401 on the second driving gear 15 are separated, the ejector rod 1601 is abutted against the second reset spring 1706 and is submerged into the blind hole 1705, at this moment, the limiting rod 1602 enters the concave ring 903, the other side is matched with the second limiting rod 1703 and the second through hole 1401 on the first driving gear 14, the limiting rod 1704 is matched with the notch 902 in the driving wheel 9, namely, when the motor works, the first driving gear 14 drives the first heating cylinder 2 to rotate, the driving wheel 9 drives the friction ring 13 to further drive the supporting ring 12 to rotate, at this moment, the wind force of the blower is increased, flame in the inner cylinder 705 is blown into the first heating cylinder 2, the materials in the first heating cylinder 2 are heated, and the heating cylinder 4 is normally heated when the outer cylinder 701 rotates along with the supporting ring 12.
Preferably, the ends of the driving wheel 9 and the driving shaft 16 are welded, when the driving shaft 16 moves towards the direction of deviating from the transmission shaft 17, the driving wheel 9 is separated from the transmission shaft 17, and at this time, the transmission shaft 17 only drives the first heating cylinder 2 to rotate when rotating, so as to uniformly heat the heating cylinder of the first heating cylinder 2, and in addition, when the inner cylinder 705 and the outer cylinder 701 are mutually blocked in a staggered manner, the rapid heating effect of the first heating cylinder 2 is better.
Alternatively, the motor does not work, the wind speed of the fan is directly increased, and the top baffle 1208 directly heats the material in the first heating cylinder 2.
The preparation method of the lithium ion battery cathode material lithium titanate comprises the steps of preparing the battery cathode material lithium titanate by using the preparation device of the lithium ion battery cathode material lithium titanate, controlling the size of flame and controlling the temperature of the driver 5 in the first heating cylinder 2 and the second heating cylinder 4.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (10)
1. The utility model provides a preparation facilities of lithium ion battery negative pole material lithium titanate, includes first heating barrel (2) and second heating barrel (4), and first heating barrel (2) and second heating barrel (4) UNICOM and whole slope are arranged, its characterized in that: the first heating cylinder body (2) and the second heating cylinder body (4) are in transmission connection through a support ring (12); the inner walls of the first heating cylinder (2) and the second heating cylinder (4) are provided with baffle plates (201), and the baffle plates (201) are arranged in a threaded manner;
the end parts connected with the first heating cylinder body (2) and the second heating cylinder body (4) are respectively provided with an external gear sleeve (3);
the device also comprises a driver (5), wherein the driver (5) comprises a first driving gear (14) and a second driving gear (15), the two external gear sleeves (3) are respectively meshed with the first driving gear (14) and the second driving gear (15), and the driver (5) also comprises a driving wheel (9);
the friction ring (13) is sleeved on the support ring (12), the friction ring (13) is attached to the outer side surface of the driving wheel (9), the support ring (12) is provided with an inner ring (1205), and the end part of the inner ring (1205) is sleeved with the heating cylinder (7).
2. The preparation device of lithium titanate as claimed in claim 1, wherein the support ring (12) has an outer ring (1203), one end of the outer ring (1203) is connected with the first heating cylinder (2) in a gap way, the other end is connected with the second heating cylinder (4) in a gap way, a mounting ring is arranged in the second heating cylinder (4), the heating cylinder (7) comprises an inner cylinder (705) and an outer cylinder (701), the inner cylinder (705) is fixed in the mounting ring, and one end of the outer cylinder (701) is arranged in the inner ring (1205);
the inner cylinder (705) is provided with at least two rows of flame leakage holes axially arranged along the inner cylinder (705), the outer cylinder (701) is provided with at least two hole rows, the hole rows are spirally distributed along the surface of the outer cylinder (701), each hole row comprises a first flame outlet hole (702) and a second flame outlet hole (703), and the diameters of the first flame outlet hole (702) and the second flame outlet hole (703) are different.
3. The device for preparing the lithium titanate as a negative electrode material of the lithium ion battery of claim 2, wherein a baffle plate (1208) is arranged in the inner ring (1205), a first middle hole (1207) is arranged in the middle of the baffle plate (1208), a circle of first through holes (1206) are arranged on the baffle plate (1208), a heat conducting rod (11) is arranged on each first through hole (1206), and one end of the heat conducting rod (11) extends into the first heating cylinder (2).
4. The device for preparing the lithium titanate serving as the negative electrode material of the lithium ion battery according to claim 1, wherein a mounting frame (1211) is mounted on the baffle (1208), a first reset spring (1209) is mounted in the mounting frame (1211), a reset plate (1210) is arranged at the end part of the first reset spring (1209), and the reset plate (1210) is movably matched in the first reset spring (1209).
5. The device for preparing the lithium titanate serving as the negative electrode material of the lithium ion battery according to any one of claims 1 to 4, wherein the first driving gear (14) is provided with a stepped hole (1402), a second through hole (1401) is formed in a stepped surface of the stepped hole (1402), the second driving gear and the first driving gear (14) are identical in structure, a transmission shaft (17) is installed in the first driving gear (14), and one end of the transmission shaft is connected with a motor.
6. The device for preparing the lithium titanate as claimed in claim 5, wherein the transmission shaft (17) comprises a second middle rod (1701) and a second circular ring (1702) arranged on the second middle rod (1701), a circle of second limiting rod (1703) is arranged on the second circular ring (1702), and the second limiting rod (1703) is movably matched with a second through hole (1401) on the first driving gear (14).
7. The preparation device of lithium ion battery negative electrode material lithium titanate according to claim 6, wherein the driving wheel (9) is provided with a third through hole (901), two ends of the third through hole (901) are respectively provided with a circle of notch (902), the second middle rod (1701) is provided with a limiting strip (1704) corresponding to the notch (902), and the middle part of the third through hole (901) is provided with a concave ring (903).
8. The device for preparing lithium titanate as a negative electrode material of a lithium ion battery according to claim 7, further comprising a driving shaft (16), wherein the driving shaft (16) comprises a first middle rod (1605) and a first circular ring (1603), the first circular ring (1603) is sleeved on the first middle rod (1605), a first limiting rod (1604) is arranged on the first circular ring (1603),
the end of second well pole (1701) has blind hole (1705), and second reset spring (1706) are installed to blind hole (1705), and the end of first well pole (1605) is provided with ejector pin (1601), and conflict second reset spring (1706) on ejector pin (1601), the end of first well pole (1605) that is provided with ejector pin (1601) is provided with round first gag lever post (1604), and the other end of first well pole (1605) is connected the linear drive.
9. The preparation device of lithium ion battery negative electrode material lithium titanate according to claim 8, wherein the motor and the linear driver are respectively installed on a mounting frame (10), the mounting frame (10) is provided with a box body (1001), a notch (1003) is formed in the top surface of the box body (1001), a mounting plate (1004) is arranged on the edge of the top plate, a connecting frame (1002) is arranged at the bottom of the box body (1001), and the connecting frame (1002) is arranged between the two mounting frames (10).
10. A method for preparing lithium titanate as a lithium ion battery cathode material, which is characterized in that the preparation device of the lithium titanate as the lithium ion battery cathode material is used for preparing the lithium titanate as the battery cathode material, and is characterized in that the flame size is controlled and the temperature in a first heating cylinder (2) and a second heating cylinder (4) of a driver (5) is controlled.
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