CN107895773A - A kind of lithium ion material secondary extracts silicon-carbon compound system - Google Patents
A kind of lithium ion material secondary extracts silicon-carbon compound system Download PDFInfo
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- CN107895773A CN107895773A CN201711355984.5A CN201711355984A CN107895773A CN 107895773 A CN107895773 A CN 107895773A CN 201711355984 A CN201711355984 A CN 201711355984A CN 107895773 A CN107895773 A CN 107895773A
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- carbon
- lithium ion
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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
- H01M4/04—Processes of manufacture in general
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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
-
- 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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- 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
- H01M4/62—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
Abstract
The invention discloses a kind of lithium ion material secondary to extract silicon-carbon compound system, including grinding case, No.1 pipeline, No. two pipelines, No. three pipelines, carbon coating case, crush box and briquetting box, the grinding case side is fixedly connected with briquetting box by No.1 pipeline, the briquetting box side is fixedly connected with crush box by No. two pipelines, the crush box side is fixedly connected with carbon coating case by No. three pipelines, the carbon coating case inner rotation is connected with No. three rotary shafts, stirrer gear is fixedly connected with the outside of No. three rotary shafts, the carbon coating case upper end is fixedly connected with No. two motors, No. two motors are fixedly connected with No. three rotary shafts, the carbon coating bottom portion is fixedly connected with No. two heating tubes.The lithium ion material secondary extracts silicon-carbon compound with equipment by being internally provided with stirrer gear in carbon coating case, and stirrer gear accelerates the reaction speed of graphite powder and liquid covering material, improves the efficiency and quality of secondary carbon coating.
Description
Technical field
The present invention relates to lithium ion material secondary extraction silicon-carbon composite technology field, specially a kind of lithium ion material two
Secondary extraction silicon-carbon compound system.
Background technology
The graphite material such as graphite powder and graphite film is more and more extensive due to its unique electrically and thermally performance, application.Stone
Ink be used in lithium ion battery have operating voltage is high, in light weight, small volume bigger than energy, have extended cycle life, can quick charge and discharge
Electricity and the advantages that non-environmental-pollution, and in recent years, due to mobile device and communication apparatus to lithium ion battery energy density per unit volume and
The continuous improvement of the performance requirements such as charging interval, electric bicycle and electric automobile are to the course continuation mileage of lithium ion battery, circulation
Life-span, high temperature performance and security etc. propose higher requirement, and these performance requirement direct correlation of lithium ion battery exist
Lithium ion battery aligns, on the property indices of negative material, and performance of the negative material to performance of lithium ion battery has
Bigger influence, at present, industrialized lithium ion battery negative material are mainly carbon material (graphite, hard carbon, soft carbon etc.) and titanium
Sour lithium, graphite material technology is most ripe among these, and native graphite has the advantages of capacity is high, is once widely used.
It is existing when manufacturing ion cathode material lithium, because the compatibility of graphite and electrolyte is poor, limit pure stone
Application of the ink in lithium ion battery.Therefore graphite material must be modified, secondary carbon bag is carried out to graphite, obtains silicon-carbon
Composite, and in one layer of amorphous silicon carbon material of Graphite Coating, tap density is improved, increases battery charging and discharging capacity
Greatly.Coated graphite course of reaction is usually first by graphite dispersion in liquid covering material or the covering material of fusing, then will
Solvent or covering material evaporation make amorphous carbon presoma be coated on graphite material surface, are then carbonized.In the mistake of processing
Equipment in journey due to carbide furnace constructs, and the shortcomings of uneven stirring and carbonization effect difference be present, causes the massive losses of energy,
Production cost is high.
The content of the invention
It is an object of the invention to provide a kind of lithium ion material secondary to extract silicon-carbon compound system, existing to solve
When manufacturing ion cathode material lithium, because the compatibility of graphite and electrolyte is poor, limit pure graphite in lithium-ion electric
Application in pond.Therefore graphite material must be modified, secondary carbon bag is carried out to graphite, obtains Si-C composite material, and
In one layer of amorphous silicon carbon material of Graphite Coating, tap density is improved, increases battery charging and discharging capacity.Coated graphite
Course of reaction is usually first by graphite dispersion in liquid covering material or the covering material of fusing, then by solvent or cladding material
Material evaporation makes amorphous carbon presoma be coated on graphite material surface, is then carbonized.Due to carbonization during processing
The equipment construction of stove, the shortcomings of uneven stirring and carbonization effect difference be present, cause the massive losses of energy, production cost is high
Problem.
To achieve the above object, the present invention provides following technical scheme a kind of lithium ion material secondary extraction silicon-carbon compound
With system, including grinding case, No.1 pipeline, No. two pipelines, No. three pipelines, carbon coating case, crush box and briquetting box, the grinding
Case side is fixedly connected with briquetting box by No.1 pipeline, and the briquetting box side is fixedly connected with crushing by No. two pipelines
Case, the crush box side are fixedly connected with carbon coating case by No. three pipelines, and the carbon coating case inner rotation is connected with three
Number rotary shaft, stirrer gear is fixedly connected with the outside of No. three rotary shafts, the carbon coating case upper end is fixedly connected with No. two electricity
Machine, No. two motors are fixedly connected with No. three rotary shafts, and the carbon coating bottom portion is fixedly connected with No. two heating tubes, described
Baffle plate is provided with above No. two heating tubes, the baffle plate is fixedly connected with carbon coating chamber interior wall, and the carbon coating case side is set
There is observation window, the crush box inner rotation is connected with No. two rotary shafts, crushing knife is fixedly connected with the outside of No. two rotary shafts,
No. two screen packs are provided with below the crushing knife, No. two screen packs are fixedly connected with crushing chamber interior wall, No. two mistakes
Dividing plate is provided with below filter screen, is fixedly connected with hydraulic cylinder at the top of the briquetting box, the hydraulic cylinder lower end is fixedly connected with pressure
Block, the briquetting box bottom are fixedly connected with No.1 heating tube, fixed plate, the fixation are provided with above the No.1 heating tube
Plate is fixedly connected with briquetting chamber interior wall, and the grinding case inner rotation is connected with No.1 rotary shaft, the No.1 rotary shaft outside
Dynamic roll flute is fixedly connected with, the grinding chamber interior wall is fixedly connected with quiet roll flute, and the grinding case side is fixedly connected with No.1
Motor, the No.1 motor are fixedly connected with No.1 rotary shaft.
Preferably, the grinding case upper end is provided with charging aperture.
Preferably, the grinding case is provided with No.1 screen pack with No.1 pipeline junction.
Preferably, the carbon coating case upper end is provided with charge door, and the carbon coating case side is provided with discharging opening.
Preferably, between the dividing plate is slant setting, and the inclined angle of the dividing plate is 30 °~60 °.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, by being internally provided with stirrer gear in carbon coating case, No. three rotary shafts of No. two motor drivens rotate so as to drive the present invention
Stirrer gear rotates, and stirrer gear accelerates the reaction speed of graphite powder and liquid covering material so that carbon-silicon composite material it is pure
Du Genggao, so as to improve the efficiency of secondary carbon coating and quality.
2nd, the present invention can be facilitated to the secondary carbon inside observation carbon coating case by being provided with observation window using observation window
The process of cladding is observed, and strengthens the degree of controllability to production.
3rd, for the present invention by being internally provided with No. two screen packs and tilted-putted dividing plate in crush box, No. two screen packs can
Effectively to be filtered to the silicon Carbon Materials after crushing, the broken uniformity of silicon powdered carbon is improved, and be easy to enter silicon Carbon Materials
The secondary cladding of row.By being provided with No.1 screen pack between grinding case and No.1 pipeline, No.1 screen pack can be effectively right
Elemental silicon after crushing is filtered, and improves the crudy of elemental silicon.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is carbon coating case internal structure schematic diagram of the present invention.
In figure：1st, case is ground, 2, quiet roll flute, 3, charging aperture, 4, dynamic roll flute, 5, No.1 rotary shaft, 6, No.1 motor, 7, one
Number screen pack, 8, No.1 pipeline, 9, fixed plate, 10, No.1 heating tube, 11, No. two pipelines, 12, No. two screen packs, 13, No. two
Rotary shaft, 14, dividing plate, 15, No. three pipelines, 16, No. two heating tubes, 17, No. three rotary shafts, 18, baffle plate, 19, discharging opening, 20,
Carbon coating case, 21, observation window, 22, stirrer gear, 23, No. two motors, 24, charge door；25th, crushing knife, 26, No. three motors, 27,
Crush box, 28, briquetting, 29, hydraulic cylinder, 30, briquetting box.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Fig. 1-2 is referred to, the present invention provides a kind of technical scheme：A kind of lithium ion material secondary extraction silicon-carbon compound is used
System, including grinding case 1, quiet roll flute 2, charging aperture 3, dynamic roll flute 4, No.1 rotary shaft 5, No.1 motor 6, No.1 screen pack 7, one
Number pipeline 8, fixed plate 9,12, No. two rotary shafts 13 of the screen pack of pipeline 11, two of No.1 heating tube 10, two, dividing plate 14, three
Pipeline 15, two heating tube 16, three rotary shaft 17, baffle plate 18, discharging opening 19, carbon coating case 20, observation window 21, stirrer gear
22nd, No. two motors 23, charge door 24,25, No. three motors 26 of crushing knife, crush box 27, briquetting 28, hydraulic cylinder 29 and briquetting box
30, the grinding side of case 1 is fixedly connected with briquetting box 30 by No.1 pipeline 8, and grinding case 1 is provided with the junction of No.1 pipeline 8
No.1 screen pack 7, No.1 screen pack 7 can be filtered effectively to the elemental silicon after crushing, improve the processing of elemental silicon
Quality, the side of briquetting box 30 are fixedly connected with crush box 27 by No. two pipelines 11, and the side of crush box 27 passes through No. three pipelines 15
Carbon coating case 20 is fixedly connected with, the inner rotation of carbon coating case 20 is connected with No. three rotary shafts 17, and No. three outsides of rotary shaft 17 are solid
Surely stirrer gear 22 is connected with, stirrer gear 22 accelerates the reaction speed of graphite powder and liquid covering material so that carbon silicon is compound
The purity of material is higher, and so as to improve the efficiency of secondary carbon coating and quality, the upper end of carbon coating case 20 is fixedly connected with No. two
Motor 23, No. two motors 23 are fixedly connected with No. three rotary shafts 17, and the bottom of carbon coating case 20 is fixedly connected with No. two heating tubes 16,
No. two tops of heating tube 16 are provided with baffle plate 18, and baffle plate 18 is fixedly connected with the inwall of carbon coating case 20, and the side of carbon coating case 20 is set
Observation window 21 is equipped with, can be facilitated using observation window 21 and the process of the secondary carbon coating inside observation carbon coating case 20 is seen
Examine, strengthen the degree of controllability to production, the upper end of carbon coating case 20 is provided with charge door 24, and the side of carbon coating case 20 is provided with discharging opening
19, charge door 24 is easy to add the raw material into carbon coating case 20, and discharging opening 19 is easy to the silicon charcoal for preparing completion meeting material
Material discharge, the inner rotation of crush box 27 are connected with No. two rotary shafts 13, and No. two outsides of rotary shaft 13 are fixedly connected with crushing knife 25, powder
The broken lower section of knife 25 is provided with No. two screen packs 12, and No. two screen packs 12 are fixedly connected with the inwall of crush box 27, and No. two filterings 12 can
Effectively to be filtered to the silicon Carbon Materials after crushing, the broken uniformity of silicon powdered carbon is improved, and be easy to enter silicon Carbon Materials
The secondary cladding of row, No. two lower sections of screen pack 12 are provided with dividing plate 14, and dividing plate 14 is slant setting, and 14 inclined angle of dividing plate is
Between 30 °~60 °, tilted-putted dividing plate 14 is easy to the raw material after crushing being flowed into carbon coating case 20, and briquetting box 30 pushes up
Portion is fixedly connected with hydraulic cylinder 29, and the lower end of hydraulic cylinder 29 is fixedly connected with briquetting 28, and the bottom of briquetting box 30 is fixedly connected with No.1
Heating tube 10, the top of No.1 heating tube 10 are provided with fixed plate 9, and fixed plate 9 is fixedly connected with the inwall of briquetting box 30, grinds case 1
Inner rotation is connected with No.1 rotary shaft 5, and the outside of No.1 rotary shaft 5 is fixedly connected with dynamic roll flute 4, and grinding case 1 inwall, which is fixed, to be connected
Quiet roll flute 2 is connected to, grinding case 1 side is fixedly connected with No.1 motor 6, and No.1 motor 6 is fixedly connected with No.1 rotary shaft 5, ground
The upper end of tumbling barrel 1 is provided with charging aperture 3, and charging aperture 3 is easy to add the raw material into grinding case 1.
Operation principle：Simple substance silicon ball is added in grinding case 1 by charging aperture when in use, opens No.1 motor 6, No.1
Motor 6 drives dynamic roll flute 4 to rotate, and simple substance ball silicon is ground, the raw material after grinding is flowed into briquetting box 30 by No.1 pipeline 8
In, No.1 screen pack 7 is installed in No.1 pipeline 8 and grinding case 1 junction, No.1 screen pack 7 can effectively to crushing after
Elemental silicon filtered, improve the crudy of elemental silicon, be then turned on the cylinder of hydraulic pressure 29, hydraulic cylinder 29 drive briquetting 28 to
Bottom is moved, and briquetting is carried out to raw material, and the No.1 heating tube 10 of the bottom of briquetting box 30 heats to raw material, heats briquetting
Raw material afterwards is flowed into crush box 27 by No. two pipelines 11, and in crush box 27 No. three motor 26 drives crushing knife 25 to rotate,
Pulverization process is carried out to raw material, the raw material after crushing is flowed out by No. two screen packs 12, and is flowed in carbon coating case 20, No. two mistakes
Filter screen 12 can be filtered effectively to the silicon Carbon Materials after crushing, the broken uniformity of silicon powdered carbon be improved, then to charge door
24 add the raw material for needing carbon coating, are opening No. two motors 23, No. two motors 23 drive stirrer gear 22 to rotate, and stirrer gear 22 adds
Fast reaction speed of the graphite powder with liquid covering material so that the purity of carbon-silicon composite material is higher, so as to improve two
The efficiency and quality of secondary carbon coating, finally obtain silicon-carbon and meet material, are discharged by discharging opening 19.
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art,
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacing, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., this should be included in
Within the protection domain of invention.
Claims (5)
1. a kind of lithium ion material secondary extracts silicon-carbon compound system, including grinding case（1）, No.1 pipeline（8）, No. two pipes
Road（11）, No. three pipelines（15）, carbon coating case（20）, crush box（27）And briquetting box（30）, the grinding case（1）Side passes through
No.1 pipeline（8）It is fixedly connected with briquetting box（30）, the briquetting box（30）Side passes through No. two pipelines（11）It is fixedly connected with
Crush box（27）, the crush box（27）Side passes through No. three pipelines（15）It is fixedly connected with carbon coating case（20）, its feature exists
In：The carbon coating case（20）Inner rotation is connected with No. three rotary shafts（17）, No. three rotary shafts（17）Outside, which is fixed, to be connected
It is connected to stirrer gear（22）, the carbon coating case（20）Upper end is fixedly connected with No. two motors（23）, No. two motors（23）With
No. three rotary shafts（17）It is fixedly connected, the carbon coating case（20）Bottom is fixedly connected with No. two heating tubes（16）, described No. two
Heating tube（16）Top is provided with baffle plate（18）, the baffle plate（18）With carbon coating case（20）Inwall is fixedly connected, the carbon bag
Cover case（20）Side is provided with observation window（21）, the crush box（27）Inner rotation is connected with No. two rotary shafts（13）, described two
Number rotary shaft（13）Outside is fixedly connected with crushing knife（25）, the crushing knife（25）Lower section is provided with No. two screen packs（12）,
No. two screen packs（12）With crush box（27）Inwall is fixedly connected, No. two screen packs（12）Lower section is provided with dividing plate
（14）, the briquetting box（30）Top is fixedly connected with hydraulic cylinder（29）, the hydraulic cylinder（29）Lower end is fixedly connected with briquetting
（28）, the briquetting box（30）Bottom is fixedly connected with No.1 heating tube（10）, the No.1 heating tube（10）Top is provided with
Fixed plate（9）, the fixed plate（9）With briquetting box（30）Inwall is fixedly connected, the grinding case（1）Inner rotation is connected with one
Number rotary shaft（5）, the No.1 rotary shaft（5）Outside is fixedly connected with dynamic roll flute（4）, the grinding case（1）Inwall, which is fixed, to be connected
It is connected to quiet roll flute（2）, the grinding case（1）Side is fixedly connected with No.1 motor（6）, the No.1 motor（6）Turn with No.1
Moving axis（5）It is fixedly connected.
A kind of 2. lithium ion material secondary extraction silicon-carbon compound system according to claim 1, it is characterised in that：Institute
State grinding case（1）Upper end is provided with charging aperture（3）.
A kind of 3. lithium ion material secondary extraction silicon-carbon compound system according to claim 1, it is characterised in that：Institute
State grinding case（1）With No.1 pipeline（8）Junction is provided with No.1 screen pack（7）.
A kind of 4. lithium ion material secondary extraction silicon-carbon compound system according to claim 1, it is characterised in that：Institute
State carbon coating case（20）Upper end is provided with charge door（24）, the carbon coating case（20）Side is provided with discharging opening（19）.
A kind of 5. lithium ion material secondary extraction silicon-carbon compound system according to claim 1, it is characterised in that：Institute
State dividing plate（14）For slant setting, and the dividing plate（14）Between inclined angle is 30 °~60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711355984.5A CN107895773A (en) | 2017-12-16 | 2017-12-16 | A kind of lithium ion material secondary extracts silicon-carbon compound system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711355984.5A CN107895773A (en) | 2017-12-16 | 2017-12-16 | A kind of lithium ion material secondary extracts silicon-carbon compound system |
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| Publication Number | Publication Date |
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| CN107895773A true CN107895773A (en) | 2018-04-10 |
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ID=61808034
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| CN201711355984.5A Pending CN107895773A (en) | 2017-12-16 | 2017-12-16 | A kind of lithium ion material secondary extracts silicon-carbon compound system |
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| CN111900341A (en) * | 2020-05-14 | 2020-11-06 | 常州华芯装备工程有限公司 | Preparation method of lithium ion material extraction compound |
| CN112002888A (en) * | 2020-08-26 | 2020-11-27 | 成都新柯力化工科技有限公司 | Method for preparing lithium battery silicon-carbon cathode by using screw extruder |
| CN112290006A (en) * | 2020-11-23 | 2021-01-29 | 山东硅纳新材料科技有限公司 | Simple and efficient preparation method of silicon-carbon anode material |
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| CN112002888A (en) * | 2020-08-26 | 2020-11-27 | 成都新柯力化工科技有限公司 | Method for preparing lithium battery silicon-carbon cathode by using screw extruder |
| CN112290006A (en) * | 2020-11-23 | 2021-01-29 | 山东硅纳新材料科技有限公司 | Simple and efficient preparation method of silicon-carbon anode material |
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