CN111900341B - Preparation method of lithium ion material extraction compound - Google Patents
Preparation method of lithium ion material extraction compound Download PDFInfo
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- CN111900341B CN111900341B CN202010407886.7A CN202010407886A CN111900341B CN 111900341 B CN111900341 B CN 111900341B CN 202010407886 A CN202010407886 A CN 202010407886A CN 111900341 B CN111900341 B CN 111900341B
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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
- H01M4/362—Composites
- H01M4/366—Composites as layered products
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/20—Graphite
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
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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
- H01M4/58—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
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/624—Electric conductive fillers
- H01M4/625—Carbon or graphite
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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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Abstract
The invention discloses a preparation method of a lithium ion material extraction compound, which comprises the steps of firstly, driving a feeding dispersion rod to rotate by a motor to stir and disperse materials in a feeding case, avoiding agglomeration of powdery raw materials, then transferring the materials into a premixing case of a mixing device by a first driving shaft, on one hand, conveying solid-phase powder materials along a mixing pipe by a helical blade on the feeding rod, on the other hand, spraying liquid coating materials conveyed inside the feeding rod by a spray head, mixing the liquid coating materials with powdery solid-phase graphite, then feeding the mixture into the dispersion case, stirring and mixing the mixture by a stirring motor, feeding the mixture into a heating pipe for conveying, heating the heating pipe to avoid the increase of the cooling viscosity of the liquid materials, so as to cause mixing difficulty, and simultaneously removing solvent materials on the surface of the powdery graphite by heating, so as to facilitate subsequent treatment, the invention can uniformly mix the powdery solid-phase graphite and the liquid-phase coating material, thereby improving the quality of the finished product.
Description
Technical Field
The invention belongs to the technical field of lithium ion batteries, and particularly relates to a preparation method of a lithium ion material extraction compound.
Background
The lithium ion battery is a novel battery with high voltage, high energy density and high cycle, and is the most widely used secondary battery at present, wherein the negative electrode material of the lithium ion battery is mainly a carbon-based material, and graphite is a common negative electrode material in the lithium ion battery, but the application of the graphite material in the lithium ion battery is limited due to poor compatibility of the graphite and electrolyte;
in the prior art, the reaction process of coating graphite comprises the steps of mixing a graphite material with a fluidized coating material, heating to remove a solvent, uniformly coating the surface of the graphite material with the coating material, and then adding the treated raw material into a low-temperature kiln for carbonization treatment.
Disclosure of Invention
The invention aims to provide a preparation method of a lithium ion material extraction compound.
The technical problems to be solved by the invention are as follows:
in the prior art, the reaction process of coating graphite is to mix a graphite material with a fluidized coating material, heat the mixture to remove a solvent, uniformly coat the surface of the graphite material with the coating material, and add the treated raw material into a low-temperature kiln for carbonization treatment.
The purpose of the invention can be realized by the following technical scheme:
a preparation method of a lithium ion material extraction compound comprises the following steps:
adding a solid-phase raw material into a feeding case and a feeding pipe of an extraction device, stirring and dispersing the material in the feeding case by driving a feeding dispersion rod to rotate through a motor, and transferring the material into a premixing box of a mixing device by a first driving shaft;
liquid materials are input into the feeding rod through the material conveying pipe head and then are sprayed out from the spray head, the liquid materials sprayed out from the spray head and the solid materials transmitted by the feeding rod are mixed and then enter the dispersion box, and after the liquid materials and the solid materials are mixed by the stirring motor, the mixed materials enter the heating pipe for transmission.
As a further scheme of the invention, the extraction device comprises a processing platform, the processing platform is fixedly provided with a feeding device through a support rod, the processing platform is also fixedly provided with a mixing device, the mixing device is connected with the feeding device through a bottom connecting pipe, and one end of the bottom connecting pipe is connected with a feeding pipe;
a first driving shaft is rotatably arranged in the bottom connecting pipe, two ends of the first driving shaft are rotatably connected with two ends of the bottom connecting pipe through shaft extensions, a second driving wheel is fixedly sleeved on one end of the first driving shaft, and the second driving wheel is connected with the shaft extensions of the driving motors through belts;
two sections of areas on the side surface of the first driving shaft are provided with helical blades, the helical directions of the two sections of helical blades are opposite, one section of helical blade is positioned at the bottom of the feeding case, and the other section of helical blade is positioned at the bottom of the feeding pipe;
the mixing device comprises a premixing box, the premixing box is communicated with the bottom connecting pipe, and a first driving shaft between two sections of spiral blades is positioned above the premixing box;
the premixing box is communicated with the mixing pipe, a feeding rod is rotatably installed in the mixing pipe, the feeding rod is of a tubular structure with openings communicated at two ends, one end of the feeding rod is connected with a spray head, the other end of the feeding rod is connected with one end of a material conveying pipe head through a mechanical sealing structure, a spiral blade is fixedly installed on the outer wall of the feeding rod, and the outer wall of the feeding rod is rotatably connected with the mixing pipe through a stabilizing bearing and a sealing bearing;
the mixing device is characterized in that one end of the discharge end of the mixing pipe is connected with one end of the dispersion box, a stirring motor is fixedly mounted on the outer wall of the dispersion box, a shaft extension of the stirring motor is connected with a dispersion stirring rod, two ends of the dispersion stirring rod are rotatably connected with the box wall of the dispersion box through bearings, a plurality of stirring blades are fixed on the dispersion stirring rod, and one end of the dispersion box is connected with a heating pipe through a pipeline.
As a further scheme of the invention, a feeding dispersion rod is rotatably mounted in a feeding case of the feeding device, a feeding port is formed in the top of the feeding case, two ends of the feeding dispersion rod are rotatably connected with the case wall of the feeding case through bearings, a first driving wheel is fixedly sleeved on one end of the feeding dispersion rod and is connected with a shaft extension of a driving motor through a chain or a belt, and the bottom of the feeding case is communicated with a bottom connecting pipe.
As a further scheme of the invention, the heating pipe comprises an inner layer and an outer layer, a heating coil is coiled between the inner layer and the outer layer, and the heating coil is used for heating the inner layer of the heating pipe.
The invention has the beneficial effects that:
when the extraction device works, firstly, the feeding dispersion rod is driven by the motor to rotate to stir and disperse materials in the feeding case, so that powdery raw materials are prevented from agglomerating, then the materials are transferred into the premixing box of the mixing device through the first driving shaft, at the moment, on one hand, solid-phase powder materials are conveyed along the mixing pipe through the spiral blade on the feeding rod, on the other hand, liquid holding materials conveyed inside the feeding rod are sprayed out through the spray head, liquid coating materials and powdery solid-phase graphite are mixed and then enter the dispersion box, after the stirring and mixing are carried out through the stirring motor, the mixed materials enter the heating pipe for conveying, the heating pipe is heated, so that the problem that the cooling viscosity of the liquid materials is increased to cause mixing difficulty can be avoided, meanwhile, solvent materials on the surface of the powdery graphite can be removed through heating, so that the subsequent treatment is convenient, and the invention can uniformly mix the powdery solid-phase graphite and the liquid coating materials, the finished product quality of the product is improved.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic view of the extracting apparatus according to the present invention;
FIG. 2 is a partial schematic view of a mixing apparatus;
FIG. 3 is a schematic structural view of a feeding device;
fig. 4 is a partial structural schematic view of the mixing device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, 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.
A preparation method of a lithium ion material extraction compound comprises the following steps:
adding the solid-phase raw materials into a feeding case 37 or/and a feeding pipe 4 of the extraction device, stirring and dispersing the materials in the feeding case 37 by driving a feeding dispersing rod 32 to rotate through a motor, and transferring the materials into a premixing box 52 of a mixing device 5 through a first driving shaft 34;
liquid material is input into the feeding rod 53 through the material conveying pipe head 57 and then is sprayed out from the spray head 58 at a high speed, the liquid material sprayed out from the spray head and the solid material transmitted by the feeding rod 53 are mixed and then enter the dispersing box 59, the mixture is stirred and mixed by the stirring motor 510, the mixed material enters the heating pipe 511 for transmission, and the heating pipe 511 is heated to avoid the increase of the cooling viscosity of the liquid material, so that the mixing difficulty is caused.
As shown in fig. 1 to 4, the extraction device includes a processing platform 1, the processing platform 1 is fixedly provided with a feeding device 3 through a support rod 2, the processing platform 1 is further fixedly provided with a mixing device 5, the mixing device 5 is connected with the feeding device 3 through a bottom connecting pipe 36, and one end of the bottom connecting pipe 36 is connected with a feeding pipe 4;
a feeding dispersion rod 32 is rotatably mounted in a feeding case 37 of the feeding device 3, a feeding port 31 is formed in the top of the feeding case 37, two ends of the feeding dispersion rod 32 are rotatably connected with a case wall of the feeding case 37 through bearings, a first driving wheel 33 is fixedly sleeved on one end of the feeding dispersion rod 32, the first driving wheel 33 is connected with a shaft extension of a driving motor through a chain or a belt, the bottom of the feeding case 37 is communicated with a bottom connecting pipe 36, a first driving shaft 34 is rotatably arranged in the bottom connecting pipe 36, two ends of the first driving shaft 34 are rotatably connected with two ends of the bottom connecting pipe 36 through a shaft extension, a second driving wheel 35 is fixedly sleeved on one end of the first driving shaft 34, and the second driving wheel 35 is connected with the shaft extension of the driving motor through a belt or a chain;
two sections of areas on the side surface of the first driving shaft 34 are provided with helical blades, and the helical directions of the two sections of helical blades are opposite, wherein one section of helical blade is positioned at the bottom of the feeding case 37, and the other section of helical blade is positioned at the bottom of the feeding pipe 4;
the mixing device 5 comprises a premixing box 52, the premixing box 52 is communicated with the bottom connecting pipe 36, and the first driving shaft 34 between the two sections of spiral blades is positioned above the premixing box 52;
the premixing box 52 is communicated with the mixing pipe 51, a feeding rod 53 is rotatably installed in the mixing pipe 51, the feeding rod 53 is of a tubular structure with openings communicated at two ends, one end of the feeding rod 53 is connected with a spray head 58, the other end of the feeding rod 53 is connected with one end of a material conveying pipe head 57 through a mechanical sealing structure, a helical blade is fixedly installed on the outer wall of the feeding rod 53, and the outer wall of the feeding rod 53 is rotatably connected with the mixing pipe 51 through a stabilizing bearing 55 and a sealing bearing 54;
one end of the mixing pipe 51 for discharging is connected with one end of a dispersion box 59, a stirring motor 510 is fixedly mounted on the outer wall of the dispersion box 59, a shaft extension of the stirring motor 510 is connected with a dispersion stirring rod, two ends of the dispersion stirring rod are rotatably connected with the box wall of the dispersion box 59 through bearings, a plurality of stirring blades are fixed on the dispersion stirring rod, and one end of the dispersion box 59 is connected with a heating pipe 511 through a pipeline;
When the extraction device works, firstly, the feeding dispersion rod 32 is driven by the motor to rotate to stir and disperse materials in the feeding case 37, so that powdery raw materials are prevented from agglomerating, then the materials are transferred into the premixing box 52 of the mixing device 5 through the first driving shaft 34, at the moment, on one hand, solid-phase powder materials are transmitted along the mixing pipe 51 through the helical blade on the feeding rod 53, on the other hand, liquid coating materials transmitted inside the feeding rod 53 are sprayed out through the spray head 58, the liquid coating materials and the powdery solid-phase graphite are mixed and then enter the dispersion box 59, after the materials are stirred and mixed through the stirring motor 510, the mixed materials enter the heating pipe 511 for transmission, the heating of the heating pipe 511 can avoid the increase of the cooling viscosity of the liquid materials, so that the mixing is difficult, and simultaneously, the solvent materials on the surface of the powdery graphite can be removed through heating, the invention is convenient for subsequent treatment, can uniformly mix the powdery solid-phase graphite and the liquid-phase coating material, and improves the finished product quality of the product.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (2)
1. A preparation method of a lithium ion material extraction compound is characterized by comprising the following steps:
adding solid-phase raw materials into a feeding case (37) and a feeding pipe (4) of an extraction device, driving a feeding dispersion rod (32) to rotate through a motor to stir and disperse the materials in the feeding case (37), and transferring the materials into a premixing box (52) of a mixing device (5) through a first driving shaft (34);
liquid materials are input into a feeding rod (53) through a material conveying pipe head (57) and then are sprayed out from a spray head (58), the liquid materials sprayed out from the spray head and the solid materials transmitted by the feeding rod (53) are mixed and then enter a dispersing box (59), and after being stirred and mixed by a stirring motor (510), the mixed materials enter a heating pipe (511) for transmission;
the extraction device comprises a processing platform (1), wherein the processing platform (1) is fixedly provided with a feeding device (3) through a support rod (2), the processing platform (1) is also fixedly provided with a mixing device (5), the mixing device (5) is connected with the feeding device (3) through a bottom connecting pipe (36), and one end of the bottom connecting pipe (36) is connected with a feeding pipe (4);
a first driving shaft (34) is rotatably arranged in the bottom connecting pipe (36), two ends of the first driving shaft (34) are rotatably connected with two ends of the bottom connecting pipe (36) through shaft extensions, a second driving wheel (35) is fixedly sleeved on one end of the first driving shaft (34), and the second driving wheel (35) is connected with the shaft extensions of the driving motors through belts;
two sections of areas on the side surface of the first driving shaft (34) are provided with helical blades, the helical directions of the two sections of helical blades are opposite, one section of helical blade is positioned at the bottom of the feeding machine box (37), and the other section of helical blade is positioned at the bottom of the feeding pipe (4);
the mixing device (5) comprises a premixing tank (52), the premixing tank (52) is communicated with a bottom connecting pipe (36), and a first driving shaft (34) between two sections of spiral blades is positioned above the premixing tank (52);
the premixing box (52) is communicated with the mixing pipe (51), a feeding rod (53) is rotatably mounted in the mixing pipe (51), the feeding rod (53) is of a tubular structure with openings communicated at two ends, one end of the feeding rod (53) is connected with a spray head (58), the other end of the feeding rod (53) is connected with one end of a material conveying pipe head (57) through a mechanical sealing structure, a spiral blade is fixedly mounted on the outer wall of the feeding rod (53), and the outer wall of the feeding rod (53) is rotatably connected with the mixing pipe (51) through a stabilizing bearing (55) and a sealing bearing (54);
one end of the mixing pipe (51) for discharging is connected with one end of a dispersion box (59), a stirring motor (510) is fixedly mounted on the outer wall of the dispersion box (59), a shaft extension of the stirring motor (510) is connected with a dispersion stirring rod, two ends of the dispersion stirring rod are rotatably connected with the box wall of the dispersion box (59) through bearings, a plurality of stirring blades are fixed on the dispersion stirring rod, and one end of the dispersion box (59) is connected with a heating pipe (511) through a pipeline;
feeding dispersion pole (32) are installed to feeding machine case (37) internal rotation of feed arrangement (3), and the top of feeding machine case (37) is provided with feed inlet (31), and the box wall rotation that the bearing was passed through at the both ends of feeding dispersion pole (32) and feeding machine case (37) is connected, one of feeding dispersion pole (32) is served and is fixed to be cup jointed first drive wheel (33), and first drive wheel (33) are connected through chain or belt and driving motor's axle extension, the bottom and the bottom connecting pipe (36) switch-on of feeding machine case (37).
2. The method for preparing a lithium ion material extraction composite as claimed in claim 1, wherein the heating tube (511) comprises an inner layer and an outer layer, a heating coil (512) is coiled between the inner layer and the outer layer, and the heating coil (512) is used for heating the inner layer of the heating tube (511).
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| CN202010407886.7A CN111900341B (en) | 2020-05-14 | 2020-05-14 | Preparation method of lithium ion material extraction compound |
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| CN202010407886.7A CN111900341B (en) | 2020-05-14 | 2020-05-14 | Preparation method of lithium ion material extraction compound |
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| CN111900341B true CN111900341B (en) | 2021-11-23 |
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| CN113729460B (en) * | 2021-09-06 | 2022-10-14 | 张家港江苏科技大学产业技术研究院 | Crushing and eating assisting device with heating function |
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