CN114420923A - Lithium ion battery cathode material lithium manganese iron phosphate material and preparation processing equipment thereof - Google Patents
Lithium ion battery cathode material lithium manganese iron phosphate material and preparation processing equipment thereof Download PDFInfo
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- CN114420923A CN114420923A CN202111531834.1A CN202111531834A CN114420923A CN 114420923 A CN114420923 A CN 114420923A CN 202111531834 A CN202111531834 A CN 202111531834A CN 114420923 A CN114420923 A CN 114420923A
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- 239000000463 material Substances 0.000 title claims abstract description 105
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- DVATZODUVBMYHN-UHFFFAOYSA-K lithium;iron(2+);manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[Fe+2].[O-]P([O-])([O-])=O DVATZODUVBMYHN-UHFFFAOYSA-K 0.000 title claims description 16
- 239000010406 cathode material Substances 0.000 title claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 claims abstract description 27
- 239000006258 conductive agent Substances 0.000 claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 19
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 17
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical class [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 239000010405 anode material Substances 0.000 claims abstract description 9
- 239000002270 dispersing agent Substances 0.000 claims abstract description 8
- CPSYWNLKRDURMG-UHFFFAOYSA-L hydron;manganese(2+);phosphate Chemical compound [Mn+2].OP([O-])([O-])=O CPSYWNLKRDURMG-UHFFFAOYSA-L 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 5
- 239000008367 deionised water Substances 0.000 claims abstract description 5
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 5
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 5
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 5
- 229910003481 amorphous carbon Inorganic materials 0.000 claims abstract description 4
- 239000006229 carbon black Substances 0.000 claims abstract description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims abstract description 4
- 239000002041 carbon nanotube Substances 0.000 claims abstract description 4
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 4
- 239000002070 nanowire Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 38
- 238000000227 grinding Methods 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 23
- 239000007774 positive electrode material Substances 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 claims description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 6
- 229910033181 TiB2 Inorganic materials 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- NDVLTYZPCACLMA-UHFFFAOYSA-N silver oxide Chemical compound [O-2].[Ag+].[Ag+] NDVLTYZPCACLMA-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000002033 PVDF binder Substances 0.000 claims description 3
- 238000001354 calcination Methods 0.000 claims description 3
- 239000003575 carbonaceous material Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 3
- 239000004800 polyvinyl chloride Substances 0.000 claims description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 229910001923 silver oxide Inorganic materials 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910018279 LaSrMnO Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 239000006256 anode slurry Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- 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
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/626—Metals
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to the technical field of nursery stocks, in particular to a lithium ferric manganese phosphate material as a lithium ion battery anode material and preparation and processing equipment thereof, wherein the lithium ferric manganese phosphate material comprises the following materials: 70-100 parts of lithium iron phosphate, 5-10 parts of a conductive material, 5-10 parts of a binder, 5-10 parts of modified silver powder, 25-50 parts of deionized water, 1-3 parts of a metal oxide, 2-5 parts of a dispersing agent and 1-3 parts of a low-temperature resistance material, wherein the conductive material comprises a carbon conductive agent and a metal ion conductive agent in a ratio of 1:1, and the carbon conductive agent comprises one or more of carbon black, amorphous carbon, a carbon nanotube, a carbon nanowire, carbon gel and graphene. The lithium ion battery has the beneficial effects that when the battery is used in a low-temperature environment, the resistance value of the low-temperature resistance material is increased due to temperature reduction, so that the heat productivity of the lithium ion battery is improved, the lithium ion battery can conduct electricity normally due to temperature increase, and the lithium iron phosphate battery can continue to work.
Description
Technical Field
The invention relates to the technical field of preparation of a lithium ion battery anode material, in particular to a lithium ferric manganese phosphate material for the lithium ion battery anode material and preparation and processing equipment thereof.
Background
At present, lithium batteries are widely applied due to the advantages of light weight, high energy density, small self-discharge, long service life, high discharge power, environmental protection and the like, and comprise four materials, namely an anode, a cathode, a diaphragm, electrolyte and the like, wherein the anode material is the most critical raw material in the lithium batteries, determines the safety performance of the batteries and the maximization of the batteries and accounts for about 30% of the cost of battery core materials of the lithium batteries, and the commonly used anode materials at present mainly comprise four materials, namely lithium cobaltate, lithium manganate, ternary materials and lithium iron phosphate.
Chinese patent No. CN102956885A provides a positive electrode material for a lithium iron phosphate battery, a lithium iron phosphate battery using the positive electrode material, and a method for preparing the same. The anode material comprises the following components in parts by weight: lithium iron phosphate: 40% -55%; first conductive agent: 1% -2%; second conductive agent: 0 to 1.5; adhesive: 2% -5%, and solvent: 42 to 57 percent. The battery comprises a positive pole piece coated with the positive pole material. The preparation method of the battery comprises a process of grinding the positive electrode material by a three-roll grinder. The pole piece manufactured by grinding the anode slurry of the lithium iron phosphate battery through the three-roller grinder has enhanced flexibility and does not crack or fall powder. In addition, the capacity exertion degree of the battery applying the pole piece is 5Ah-5.2Ah, and the capacity of the ground slurry is improved by about 4 percent compared with that of the unground slurry.
At present, the electronic conductance of the lithium ion battery made of the existing lithium iron manganese phosphate material is very low, and especially, the lithium iron phosphate material almost becomes a non-conductive insulator in a low-temperature environment, so that the lithium iron phosphate battery can hardly work at low temperature, and the existing lithium ion battery lithium iron phosphate material can not be ground, mixed and other multiple steps in preparation, but equipment required by multiple steps is generally separated, so that the lithium iron phosphate material is not continuously prepared, and therefore, the lithium iron manganese phosphate material as the positive electrode material of the lithium ion battery and the preparation processing equipment thereof need to be designed urgently to solve the problems.
Disclosure of Invention
The invention aims to provide a lithium iron manganese phosphate material as a positive electrode material of a lithium ion battery and preparation processing equipment thereof, and aims to solve the problems of poor conductivity and discontinuity in preparation of the conventional lithium iron phosphate battery in the background art.
The technical scheme of the invention is as follows: a lithium ferric manganese phosphate material for a positive electrode material of a lithium electronic battery comprises the following materials: 70-100 parts of lithium iron phosphate, 5-10 parts of conductive material, 5-10 parts of binder, 5-10 parts of modified silver powder, 25-50 parts of deionized water, 1-3 parts of metal oxide, 2-5 parts of dispersant and 1-3 parts of low-temperature resistance material.
Further, the conductive material comprises a carbon conductive agent and a metal ion conductive agent, the ratio of the carbon conductive agent to the metal ion conductive agent is 1:1, the carbon conductive agent comprises one or more of carbon black, amorphous carbon, carbon nano tubes, carbon nano wires, carbon gel and graphene, the conductive carbon material is in a granular structure, the metal ion conductive agent comprises one or more of aluminum oxide, manganese dioxide, silver oxide and magnesium oxide, and the metal ion conductive agent is in a powdery shape.
Furthermore, the adhesive is polyvinyl chloride or polyvinylidene fluoride, the dispersing agent is polyvinylpyrrolidone, and the low-temperature resistance material is composed of LaSrMnO and (Ni, Zn) FeO.
Further, the modified silver powder is prepared by sintering silver powder, nano-carbon, a silane coupling agent and titanium diboride in a calcining furnace at 400-500 ℃ for 2-4h and then crushing, wherein the mixing ratio of the silver powder, the nano-carbon, the silane coupling agent and the titanium diboride is 28:2:1.5: 2.
A lithium ion battery anode material lithium manganese iron phosphate material preparation and processing device comprises an upper barrel and a lower barrel, wherein the lower barrel is welded on the outer wall of the bottom of the upper barrel, a shell is welded on the inner wall of the side surface of the upper barrel close to the top, grooves which are distributed in an annular structure at equal intervals are formed in the outer wall of the top of the shell, a support plate is integrally formed on the inner wall of one side of each groove, a weighing sensor is mounted on the outer wall of the top of the support plate and the center of the inner wall of the bottom of the upper barrel through bolts, springs are mounted at the top ends of the weighing sensors through bolts, a charging barrel which is connected with the inside of the upper barrel in a sliding mode is mounted at the top ends of the springs through bolts, telescopic pipes are inserted into two sides of the outer wall of the bottom of the charging barrel, a charging box is mounted at the top end of the spring through bolts, a third electromagnetic valve is mounted at the center of the outer wall of the bottom of the charging box through a pipeline, and a charging pipe is inserted into one side of the outer wall of the top of the upper barrel, go up barrel top outer wall center department and install the motor through the bolt, and the output shaft of motor installs the installation axle that extends to down the internal portion of jar through the parallel key, and installs the axle bottom and seted up the through-hole, all weld on the installation axle both sides outer wall and have lain in the inside stirring board of feed cylinder, and the stirring board link up with the through-hole each other.
Further, go up and install the control cabinet through the bolt on barrel one side outer wall, go up barrel side inner wall and be close to top department and install through the bolt and grind the shell, and grind shell side inner wall and be close to bottom department and set up the silo that the equidistance is the annular structure and distributes, the silo link up with the recess each other, install and install the grinding roller that is located the shell inside through the parallel key on the side outer wall of axle side.
Further, the outer wall of the two sides of the installation shaft is welded with a rotating plate above the grinding roller near the top, the outer wall of the two sides of the installation shaft is welded with a stirring blade inside the lower tank near the bottom, and the outer wall of the side face of the stirring blade and the outer wall of the side face of the stirring plate are provided with air holes distributed in an equidistant structure.
Further, the installation cavity has been seted up to jar internal portion down, and installation cavity bottom inner wall both sides all install through the bolt with jar two solenoid valve that link up each other of body down, telescopic tube bottom threaded connection is at two feed ends of solenoid valve.
Further, the cavity has been seted up to jar internal portion down, jar one side outer wall down is close to bottom department and pegs graft and have the outlet duct that extends to the cavity inside, jar one side outer wall down is close to top department and pegs graft and have the intake pipe that extends to the cavity inside.
Further, lower jar of body one side outer wall is close to top department and pegs graft and have the inlet pipe that extends to down jar internal portion, it has the discharging pipe to peg graft on the outer wall of jar body bottom down, and discharging pipe bottom threaded connection has a solenoid valve one, it has the gas-supply pipe to peg graft on the outer wall of discharging pipe one side, and a gas-supply pipe one end threaded connection has the installation head that is located the discharging pipe, the installation head is pegged graft inside the through-hole.
Compared with the prior art, the invention provides a lithium ferric manganese phosphate material as a positive electrode material of a lithium electronic battery and preparation and processing equipment thereof by improvement, and the lithium ferric manganese phosphate material has the following improvements and advantages:
(1) according to the low-temperature resistance material designed by the method, when the battery is used in a low-temperature environment, the resistance value of the low-temperature resistance material is reduced due to the temperature, so that the heat productivity of the lithium battery is improved, the lithium ion battery can conduct electricity normally due to the temperature rise, and the lithium iron phosphate battery can continue to work.
(2) When the battery is used, the electrochemical performance, particularly the rate performance, of the lithium iron phosphate material can be greatly improved by the conductive material and the modified silver powder, so that the overall conductivity is improved, the specific capacity attenuation of the battery is small, the cycle use frequency of the product is improved, and the service life is prolonged.
(3) According to the upper barrel and the lower tank designed by the invention, when the lithium iron phosphate material is prepared, the structure formed by the upper barrel, the lower tank and the like can realize continuous grinding, mixing and heating treatment on the material, so that the time required by the preparation of the original material is reduced, and the preparation efficiency of the lithium iron phosphate material is improved.
(4) According to the gas pipe, the through hole and the air hole designed by the invention, when the lithium iron phosphate material flows out of the lower tank body, gas can be conveyed into the air hole through the gas pipe, so that the gas enters the stirring plate and the stirring blades and is blown out of the air hole, so that powder adhered to the stirring plate and the stirring blades is removed, the stirring plate and the stirring blades are cleaned, the influence on the next material preparation is avoided, and the material can be inflated during mixing to raise the mixing effect.
(5) According to the weighing sensor designed by the invention, when materials are added to the structure formed by the upper cylinder body and the lower tank body, the precise feeding of the preparation equipment can be realized through the detection of the weighing sensor, the phenomenon that the performance of lithium iron phosphate is influenced by too much and too little material clamping is avoided, and the waste can be saved.
Drawings
The invention is further explained below with reference to the figures and examples:
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the upper barrel construction of the present invention;
FIG. 3 is a schematic view of the construction of the lower can body of the present invention;
FIG. 4 is a schematic structural diagram of A of the present invention;
FIG. 5 is a schematic structural view of B of the present invention;
fig. 6 is a control flow diagram of the present invention.
Description of reference numerals:
1 upper cylinder body, 2 lower tank body, 3 shell body, 4 feeding pipe, 5 air inlet pipe, 6 air outlet pipe, 7 discharging pipe, 8 first electromagnetic valve, 9 air conveying pipe, 10 control table, 11 motor, 12 material injection pipe, 13 groove, 14 material box, 15 mounting shaft, 16 rotating plate, 17 grinding roller, 18 grinding shell, 19 material groove, 20 material cylinder, 21 stirring plate, 22 air hole, 23 telescopic pipe, 24 weighing sensor, 25 spring, 26 cavity body, 27 stirring blade, 28 second electromagnetic valve, 29 mounting cavity, 30 support plate, 31 third electromagnetic valve, 32 mounting head and 33 through hole.
Detailed Description
The present invention will be described in detail with reference to fig. 1 to 6, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention provides a lithium ferric manganese phosphate material as a positive electrode material of a lithium electronic battery through improvement, which comprises the following materials: 80 parts of lithium iron phosphate, 5 parts of conductive material, 5 parts of binder, 7 parts of modified silver powder, 30 parts of deionized water, 2 parts of metal oxide, 3 parts of dispersant and 2 parts of low-temperature resistance material, wherein the low-temperature resistance material can reduce the resistance value to increase due to temperature, so that the heat productivity of the lithium battery is improved, the lithium iron phosphate battery can conduct electricity normally due to temperature increase, the lithium iron phosphate battery can continue to work, the conductive material comprises carbon conductive agent and metal ion conductive agent, the ratio of the carbon conductive agent to the metal ion conductive agent is 1:1, the carbon conductive agent comprises one or more of carbon black, amorphous carbon, carbon nano tube, carbon nano wire, carbon gel and graphene, the conductive carbon material is in a granular structure, the metal ion conductive agent comprises one or more of aluminum oxide, manganese dioxide, silver oxide and magnesium oxide, and the metal ion conductive agent is in a powdery state, the conductive material is matched with the modified silver powder, so that the electrochemical performance, particularly the rate performance, of the lithium iron phosphate material can be greatly improved, the overall conductivity is improved, the specific capacity attenuation of the battery is small, the recycling frequency of the product is improved, the service life is prolonged, the adhesive is polyvinyl chloride or polyvinylidene fluoride, the dispersing agent is polyvinylpyrrolidone, the low-temperature resistance material is composed of LaSrMnO and (Ni, Zn) FeO, the modified silver powder is prepared by sintering silver powder, nano carbon, a silane coupling agent and titanium diboride in a calcining furnace at the temperature of 400 ℃ and 500 ℃ for 2-4h and then crushing, and the mixing ratio of the silver powder, the nano carbon, the silane coupling agent and the titanium diboride is 28:2:1.5: 2.
A lithium ion battery anode material lithium manganese iron phosphate material preparation and processing device comprises an upper barrel 1 and a lower barrel 2, wherein the lower barrel 2 is welded on the outer wall of the bottom of the upper barrel 1, a shell 3 is welded on the inner wall of the side surface of the upper barrel 1 near the top, grooves 13 which are distributed in an annular structure at equal intervals are formed in the outer wall of the top of the shell 3, a feed box 14 is conveniently installed on the shell 3 through the grooves 13, a support plate 30 is integrally formed on the inner wall of one side of each groove 13, a weighing sensor 24 is installed on the outer wall of the top of each support plate 20 and the center of the inner wall of the bottom of the upper barrel 1 through a bolt, the type of the weighing sensor 24 is preferably CCG, the material weight of the feed box 14 and the material inside the feed box 20 can be conveniently detected, accurate feeding is realized, a spring 25 is installed at the top end of the weighing sensor 24 through a bolt, the spring 25 is convenient for enabling the weighing sensor 24 to install the feed box 20 and the feed box 14, the top end of one spring 25 is provided with a charging barrel 20 which is connected with the inside of the upper barrel 1 in a sliding mode through a bolt, two sides of the outer wall of the bottom of the charging barrel 20 are respectively provided with a telescopic pipe 23 in an inserted mode, the telescopic pipes 23 are convenient for connecting the charging barrel 20 with a second electromagnetic valve 28, the top end of the other spring 25 is provided with a feed box 14 through a bolt, the feed box 14 is convenient for storing materials, the center of the outer wall of the bottom of the feed box 14 is provided with a third electromagnetic valve 31 through a pipeline, the type of the third electromagnetic valve 31 is preferably 2W040-10, the weighing sensor 24 at the bottom of the charging barrel 20 is convenient to start when detecting that the numerical value reaches the proper numerical value, the materials in the feed box 14 enter the shell 3 and then enter the upper barrel 1 through a feed trough 19, one side of the outer wall of the top of the upper barrel 1 is provided with a feeding pipe 12 in an inserted mode, the feeding pipe 12 is convenient for feeding lithium iron phosphate materials into the upper barrel 1, and the center of the outer wall of the top of the upper barrel 1 is provided with a motor 11 through a bolt, the type of the motor 11 is preferably 5IK90A-CF, which is convenient for providing power for the rotation of the mounting shaft 15, the mounting shaft 15 extending to the inside of the lower tank body 2 is installed on the output shaft of the motor 11 through a flat key, the mounting shaft 15 is convenient for transmitting motion, so that the rotating plate 16, the stirring plate 21, the stirring blade 27 and other structures rotate, the bottom end of the mounting shaft 15 is provided with a through hole 33, the through hole 33 is convenient for gas flowing from the gas pipe 9 to enter the stirring blade 27 and the stirring plate 21, the stirring plates 21 positioned in the charging barrel 20 are welded on the outer walls of the two sides of the mounting shaft 15, the stirring plates 21 can stir materials in the charging barrel 20 under the driving of the mounting shaft 15, so that the materials are uniformly mixed, the stirring plates 21 and the through hole 33 are mutually communicated, the control console 10 is installed on the outer wall of one side of the upper barrel 1 through a bolt, the control console 10 is convenient for controlling the operation of the equipment, the grinding shell 18 is installed on the inner wall of the side surface of the upper barrel 1 near the top through a bolt, the grinding shell 18 is convenient to be matched with a grinding roller 17 to grind materials, material grooves 19 which are distributed in an annular structure at equal intervals are formed in the position, close to the bottom, of the inner wall of the side face of the grinding shell 18, the material grooves 19 are convenient to fall on the bottom of the shell 3 and can flow between the grinding roller 17 and the grinding shell 18, the material grooves 19 are communicated with the grooves 13, the grinding roller 17 which is located inside the grinding shell 18 is installed on the outer wall of the side face of the installation shaft 15 through a flat key, the grinding roller 17 is matched with the grinding shell 18 and can be driven by the installation shaft 15 to grind powder falling between the grinding roller 17 and the grinding shell 18, rotating plates 16 which are located above the grinding roller 17 are welded on the outer walls of the two sides of the installation shaft 15 and close to the top end, the rotating plates 16 can be driven by the installation shaft 15 to scatter materials entering the upper barrel 1 through the material injection pipe 12, so that the materials can fall between the grinding roller 17 and the grinding shell 18 from different directions, and the falling of the materials can be prevented from being accumulated together to influence the falling of the materials, installation axle 15 both sides outer wall is close to bottom department and all welds the stirring leaf 27 that is located down jar body 2 inside, stirring leaf 27 can stir the material of jar body 2 inside down under installation axle 15 drives, and stir leaf 27, all set up the gas pocket 22 that is equidistant structure distribution on the outer wall of stirring board 21 side, gas pocket 22 can be so that get into stirring board 21 from through-hole 33, the gaseous outflow in the stirring leaf 27, thereby get rid of stirring leaf 27, the powder on the stirring board 21, simultaneously can spout when mixing and make the powder raise the improvement mixed effect.
Further, a mounting cavity 29 is formed in the lower tank body 2, the mounting cavity 29 is convenient for mounting a second electromagnetic valve 28 and other structures on the lower tank body 2, two sides of the inner wall of the bottom of the mounting cavity 29 are respectively provided with a second electromagnetic valve 28 communicated with the lower tank body 2 through bolts, the type of the second electromagnetic valve 28 is preferably 2W040-10, the mounting cavity is convenient to start under the action of the console 10 after the weighing sensor 24 in the upper barrel body 1 detects that the internal mass of the charging barrel 20 reaches a proper value for a period of time, so that the material in the charging barrel 20 flows into the lower tank body 2, the bottom end of the telescopic pipe 23 is in threaded connection with the feeding end of the second electromagnetic valve 28, a cavity 26 is formed in the lower tank body 2, the cavity 26 is convenient for steam to enter the lower tank body 2 to heat the material in the lower tank body 2, a proper environment is provided for material mixing, and an air outlet pipe 6 extending into the cavity 26 is inserted in the position, close to the bottom, on one side of the lower tank body 2, the outlet pipe 65 is convenient for water vapor to flow out of the cavity 26, an inlet pipe 5 extending into the cavity 26 is inserted at the position, close to the top, of the outer wall of one side of the lower tank body 2, the inlet pipe 5 is convenient for water vapor to enter the cavity 26 to heat the lower tank body 2, an inlet pipe 4 extending into the lower tank body 2 is inserted at the position, close to the top, of the outer wall of one side of the lower tank body 2, a discharge pipe 7 is inserted on the outer wall of the bottom of the lower tank body 2, the discharge pipe 7 is convenient for installing a first electromagnetic valve 8 on the lower tank body 2, meanwhile, materials can flow out of the lower tank body 2, the bottom end of the discharge pipe 7 is in threaded connection with the first electromagnetic valve 8, the type of the first electromagnetic valve 8 is preferably 2W040-10, the control on time when the materials in the lower tank body 1 flow out is convenient, a gas pipe 9 is inserted on the outer wall of one side of the discharge pipe 7, one end of the gas pipe 9 is installed on a gas pump, and the gas can conveniently enter the through hole 33 to provide power, and the air pipe 9 one end threaded connection has the installation head 32 that is located the inside of discharging pipe 7, and installation head 32 passes through sealed bearing and installs in the 15 bottom of installation axle to make air pipe 9 and through-hole 32 communicate, installation head 32 pegs graft inside through-hole 33.
The working principle of the invention is as follows: when the device is used, a worker can add prepared lithium iron phosphate material into the upper barrel 1 through the material injection pipe 12, then the worker pours conductive material, modified silver powder, metal oxide and low-temperature resistance material into the material box 14 in the shell 3 respectively, and simultaneously when the lithium iron phosphate material enters the upper barrel 1, the motor 11 is started under the control of the console 10, so that the mounting shaft 15 rotates, the rotating plate 16 breaks up the material falling into the upper barrel 1, the grinding roller 17 rotates under the transmission of the mounting shaft 15, so that the material falling between the grinding roller 17 and the grinding shell 18 is ground, and the ground material falls into the charging barrel 20, at the same time, the weighing sensor 24 below the charging barrel 20 detects the weight of the material in the charging barrel 20, when the detected value reaches the set value on the console 10, the third electromagnetic valve 31 positioned at the bottom of the feed box 14 under the control of the control console 10 is started, so that the materials in the feed box 14 can fall to the bottom of the groove 13, then flow into the space between the grinding shell 18 and the grinding roller 17 in the upper barrel 1 through the feed groove 19, then the ground materials flow into the material barrel 20 under the action of gravity, and are mixed together during grinding, at the same time, the weighing sensor 24 positioned in the feed box 14 also starts to operate, when the weight of the materials in the feed box 14 reaches a certain value range, the third electromagnetic valve 31 is closed under the control of the control console 10, so that the material injection step is completed, then the materials falling into the material barrel 20 are mixed together under the action of the stirring plate 21, and after a period of mixing, the second electromagnetic valve 28 is started under the control of the control console 10, so that the materials in the material barrel 20 enter the lower tank body 2 through the telescopic pipe 23 and the second electromagnetic valve 28, at this moment, the staff can add the binder, the deionized water and the dispersing agent to the lower tank body 2 interior in proper order through the inlet pipe 4 according to the result that is located 24 inside weighing sensor of feed cylinder 24 and detects, and the stirring leaf 27 can stir the material of the lower tank body 2 interior under the drive of installation axle 15 this moment to make the material misce bene, can start the solenoid valve 8 after later mixing a period, make the material that mixes well flow out the lower tank body 2.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A lithium ion battery anode material lithium ferric manganese phosphate material is characterized in that: comprises the following materials: 70-100 parts of lithium iron phosphate, 5-10 parts of conductive material, 5-10 parts of binder, 5-10 parts of modified silver powder, 25-50 parts of deionized water, 1-3 parts of metal oxide, 2-5 parts of dispersant and 1-3 parts of low-temperature resistance material.
2. The lithium iron manganese phosphate material as a positive electrode material of a lithium ion battery according to claim 1, wherein: the conductive material comprises a carbon conductive agent and a metal ion conductive agent, the ratio of the carbon conductive agent to the metal ion conductive agent is 1:1, the carbon conductive agent comprises one or more of carbon black, amorphous carbon, a carbon nano tube, a carbon nano wire, carbon gel and graphene, the conductive carbon material is in a granular structure, the metal ion conductive agent comprises one or more of aluminum oxide, manganese dioxide, silver oxide and magnesium oxide, and the metal ion conductive agent is in a powder shape.
3. The lithium iron manganese phosphate material as a positive electrode material of a lithium ion battery according to claim 1, wherein: the adhesive is polyvinyl chloride or polyvinylidene fluoride, the dispersing agent is polyvinylpyrrolidone, and the low-temperature resistance material is prepared from
And (4) forming.
4. The lithium iron manganese phosphate material as a positive electrode material of a lithium ion battery according to claim 1, wherein: the modified silver powder is prepared by sintering silver powder, nano-carbon, a silane coupling agent and titanium diboride in a calcining furnace at 400-500 ℃ for 2-4h and then crushing, wherein the mixing ratio of the silver powder, the nano-carbon, the silane coupling agent and the titanium diboride is 28:2:1.5: 2.
5. The utility model provides a lithium ion battery cathode material lithium iron manganese phosphate material preparation processing equipment which characterized in that: the feed bin comprises an upper barrel body (1) and a lower barrel body (2), wherein the lower barrel body (2) is welded on the outer wall of the bottom of the upper barrel body (1), a shell (3) is welded on the inner wall of the side surface of the upper barrel body (1) close to the top, grooves (13) which are distributed in an annular structure at equal intervals are formed in the outer wall of the top of the shell (3), a support plate (30) is integrally formed on the inner wall of one side of each groove (13), weighing sensors (24) are mounted on the outer wall of the top of each support plate (20) and the center of the inner wall of the bottom of the upper barrel body (1) through bolts, springs (25) are mounted at the top ends of the weighing sensors (24) through bolts, a feed barrel (20) which is connected with the inner part of the upper barrel body (1) in a sliding mode is mounted at the top end of one of the springs (25) through bolts, telescopic pipes (23) are inserted in two sides of the outer wall of the bottom of the feed barrel (20), and a feed bin (14) is mounted at the top end of the other spring (25) through bolts, and workbin (14) bottom outer wall center department has solenoid valve three (31) through the pipeline mounting, it has notes material pipe (12) to go up to peg graft in barrel (1) top outer wall one side, go up barrel (1) top outer wall center department and install motor (11) through the bolt, and the output shaft of motor (11) installs through the parallel key and extends to down jar installation axle (15) of body (2) inside, and installs axle (15) bottom and seted up through-hole (33), all weld stirring board (21) that are located feed cylinder (20) inside on installation axle (15) both sides outer wall, and stirring board (21) link up each other with through-hole (33).
6. The lithium iron manganese phosphate material preparation and processing equipment for the positive electrode material of the lithium ion battery according to claim 5, wherein the equipment comprises: go up and install control cabinet (10) through the bolt on barrel (1) one side outer wall, go up barrel (1) side inner wall and be close to top department and install mill shell (18) through the bolt, and mill shell (18) side inner wall is close to bottom department and sets up silo (19) that the equidistance is the annular structure and distributes, silo (19) link up each other with recess (13), install and install grinding roller (17) that are located mill shell (18) inside through the parallel key on axle (15) side outer wall.
7. The lithium iron manganese phosphate material preparation and processing equipment for the positive electrode material of the lithium ion battery according to claim 5, wherein the equipment comprises: install axle (15) both sides outer wall and be close to top department and all weld and be located commentaries on classics board (16) of grinding roller (17) top, install axle (15) both sides outer wall and be close to bottom department and all weld stirring leaf (27) that are located down jar body (2) inside, and all offer on stirring leaf (27), the stirring board (21) side outer wall and be gas pocket (22) that equidistant structure distributes.
8. The lithium iron manganese phosphate material preparation and processing equipment for the positive electrode material of the lithium ion battery according to claim 5, wherein the equipment comprises: the installation cavity (29) has been seted up to the lower tank body (2) inside, and installation cavity (29) bottom inner wall both sides all install through the bolt with the lower tank body (2) solenoid valve two (28) that link up each other, flexible pipe (23) bottom threaded connection is at solenoid valve two (28) feed end.
9. The lithium iron manganese phosphate material preparation and processing equipment for the positive electrode material of the lithium ion battery according to claim 5, wherein the equipment comprises: the inner part of the lower tank body (2) is provided with a cavity (26), the outer wall of one side of the lower tank body (2) is spliced with an air outlet pipe (6) extending to the inner part of the cavity (26) near the bottom, and the outer wall of one side of the lower tank body (2) is spliced with an air inlet pipe (5) extending to the inner part of the cavity (26) near the top.
10. The lithium iron manganese phosphate material preparation and processing equipment for the positive electrode material of the lithium ion battery according to claim 5, wherein the equipment comprises: the outer wall of one side of the lower tank body (2) is close to the top and is spliced with an inlet pipe (4) extending to the inner part of the lower tank body (2), the outer wall of the bottom of the lower tank body (2) is spliced with a discharging pipe (7), the bottom end of the discharging pipe (7) is in threaded connection with a first electromagnetic valve (8), the outer wall of one side of the discharging pipe (7) is spliced with a gas pipe (9), one end of the gas pipe (9) is in threaded connection with an installing head (32) located inside the discharging pipe (7), and the installing head (32) is spliced inside the through hole (33).
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| CN114420923B (en) | 2024-07-09 |
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