CN112320804B - Vacuum heat treatment equipment for continuously preparing SiO negative electrode material of lithium ion battery - Google Patents
Vacuum heat treatment equipment for continuously preparing SiO negative electrode material of lithium ion battery Download PDFInfo
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- CN112320804B CN112320804B CN202011046389.5A CN202011046389A CN112320804B CN 112320804 B CN112320804 B CN 112320804B CN 202011046389 A CN202011046389 A CN 202011046389A CN 112320804 B CN112320804 B CN 112320804B
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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
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
- C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
- C01B33/182—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by reduction of a siliceous material, e.g. with a carbonaceous reducing agent and subsequent oxidation of the silicon monoxide formed
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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
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
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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 vacuum heat treatment equipment for continuously preparing a SiO negative electrode material of a lithium ion battery, which comprises a reaction section, a condensation section and a material receiving section; the reaction section comprises a vacuum cavity and a heat treatment assembly, a reaction heating thermal field is arranged in the vacuum cavity, and a reaction kettle is arranged in the reaction heating thermal field; the condensation section comprises a condensation cylinder, and a condensation heating furnace is wrapped on the outer ring of the condensation cylinder; the material receiving section comprises a material receiving cylinder body, the material receiving cylinder body is communicated with the bottom of the condensing cylinder body, the material receiving cylinder body is connected with an air inlet of an air pumping system through a pipeline, and the air inlet of the air pumping system is connected with the vacuum cavity through a vacuum connecting pipe; the invention adds a brand new device in the condensation section, can control the temperature of the condensation section, can stably prepare the needed SiO material, and has the advantages of separation of the reaction section, the condensation section and the material receiving section, realization of mass production of products and convenient installation and transportation.
Description
Technical Field
The invention relates to the technical field of electrical cabinets, in particular to vacuum heat treatment equipment for continuously preparing a SiO negative electrode material of a lithium ion battery.
Background
With the improvement of the energy density requirement of the lithium ion battery in the market, the negative electrode material used by the lithium ion battery is required to have high specific capacity and cycle performance, the negative electrode commonly used by the lithium battery at present is mainly a graphite material, the theoretical capacity of the negative electrode is only 372mAh/g, the negative electrode material can not meet the requirement of the lithium ion battery with the high specific energy density of 300WH/g, and the silicon material (nano silicon and silicon oxygen compound) is taken as an ideal negative electrode material of the lithium battery, has rich reserve and wide source, is an ideal negative electrode material of the lithium battery, is not stable enough in the preparation process of the existing SiO preparation equipment, is difficult to stably prepare the SiO material, is not beneficial to industrialized large-scale production, has a large integral structure, and is inconvenient to transport and install.
Disclosure of Invention
The invention mainly aims to provide vacuum heat treatment equipment for continuously preparing a SiO negative electrode material of a lithium ion battery, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that: a vacuum heat treatment device for continuously preparing a SiO negative electrode material of a lithium ion battery comprises a reaction section, a condensation section and a material receiving section; the reaction section comprises a vacuum cavity and a heat treatment component, a reaction heating thermal field is installed in the vacuum cavity, and a reaction kettle is arranged in the reaction heating thermal field; the condensation section comprises a condensation cylinder body, the condensation cylinder body is communicated with the reaction kettle through an air duct, and a condensation heating furnace is wrapped and installed on the outer ring of the condensation cylinder body; the material collecting section comprises a material collecting barrel, the material collecting barrel is communicated with the bottom of the condensing barrel, an air inlet of an air pumping system is connected with the material collecting barrel through a pipeline, and the air inlet of the air pumping system is connected with the vacuum cavity through a vacuum connecting pipe.
Preferably, the outer ring of the gas guide tube is provided with a transition heating furnace, and two ends of the transition heating furnace are detachably connected with the reaction section and the condensation section respectively.
Preferably, the bottom of the condensation cylinder body is of a funnel-shaped structure, and a sealing top cover is installed at the top of the condensation cylinder body.
Preferably, the bottom of the condensation barrel is detachably connected with the material receiving barrel, an air suction opening is formed in the side wall of the material receiving barrel and detachably connected with the pipeline, and the bottom of the material receiving barrel is provided with a roller.
Preferably, the air exhaust system is a mechanical pump, a first control valve is installed on the pipeline, a second control valve is installed on the vacuum connecting pipe, and the first control valve and the second control valve are both electromagnetic control valves.
Preferably, the reaction kettle is a sealed box body, a crucible is placed in the reaction kettle, and the crucible is used for placing reaction materials.
Preferably, the top of the vacuum cavity is provided with a hanging buckle, and the bottom of the vacuum cavity is provided with a supporting leg.
Preferably, the outer wall of the vacuum cavity is of a double-layer shell structure, and water is filled between the double-layer shells for cooling.
Preferably, the outer wall of the reaction heating thermal field is provided with a heat-insulating screen.
Compared with the prior art, the invention has the following beneficial effects:
1. this vacuum heat treatment equipment of continuous preparation lithium ion battery SiO negative electrode material can effectually carry out the preparation of SiO material, can large-scale industrial preparation production to this equipment condensation segment has increased brand-new device, can control condensation segment temperature, thereby can be stable prepare out the SiO material that needs, reaction section, condensation segment, receipts material section are separately, can realize the mass production of product, easy to assemble and transportation.
2. According to the vacuum heat treatment equipment for continuously preparing the SiO cathode material of the lithium ion battery, the heating thermal field can heat the interior of the equipment to 1350-.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a segmented schematic diagram of the overall structure of the present invention.
In the figure: 1. a vacuum chamber; 2. a reaction heating thermal field; 3. a reaction kettle; 4. a crucible; 5. an air duct; 6. a transition heating furnace; 7. a condensing cylinder; 8. a condensation heating furnace; 9. a material receiving cylinder body; 10. an air extraction system; 11. hanging a buckle; 12. sealing the top cover; 13. supporting legs; 14. an air extraction opening; 15. a pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, a vacuum heat treatment apparatus for continuously preparing a SiO cathode material of a lithium ion battery comprises a reaction section, a condensation section and a material receiving section; the reaction section comprises a vacuum cavity 1 and a heat treatment assembly, a reaction heating thermal field 2 is installed in the vacuum cavity 1, and a reaction kettle 3 is arranged in the reaction heating thermal field 2; the condensation section comprises a condensation cylinder body 7, the condensation cylinder body 7 is communicated with the reaction kettle 3 through an air duct 5, and a condensation heating furnace 8 is wrapped and installed on the outer ring of the condensation cylinder body 7; the material receiving section comprises a material receiving cylinder 9, the material receiving cylinder 9 is communicated with the bottom of the condensing cylinder 7, an air inlet of an air pumping system 10 is connected to the material receiving cylinder 9 through a pipeline 15, the air inlet of the air pumping system 10 is connected with the vacuum cavity 1 through a vacuum connecting pipe, when the air pumping system is used for vacuumizing, the internal pressure and the external pressure of the reaction kettle can be balanced, a pipeline connected with the vacuum cavity can be closed when receiving materials, only SiO gas in the reaction kettle is pumped, and the air pumping system can be used for vacuumizing the interior of the reaction kettle to 1Pa through the vacuum connecting pipe.
In this embodiment, transition heating furnace 6 is installed to the outer lane of air duct 5, transition heating furnace 6's both ends can be dismantled with reaction section and condensation segment respectively and be connected, conveniently dismantle transportation and installation, and transition heating can heat up to 1400 ℃, keeps gaseous state when making SiO gaseous pass through the air duct, can not condense.
In this embodiment, the bottom of condensation barrel 7 is the infundibulate structure, seal cap 12 is installed at the top of condensation barrel 7, the convenient collection to conveniently clear up the condensation barrel, the condensation barrel of sealed setting, SiO gas enters into the condensation barrel through the air duct and condenses, prevents to reveal.
In this embodiment, the bottom of condensation barrel 7 and receipts material barrel 9 can be dismantled and be connected, the lateral wall of receiving material barrel 9 is provided with extraction opening 14, extraction opening 14 and pipeline 15 can be dismantled and be connected, the gyro wheel is installed to the bottom of receiving material barrel 9.
In this embodiment, the air pumping system 10 is a mechanical pump, the pipeline 15 is provided with a first control valve, the vacuum connection pipe is provided with a second control valve, and the first control valve and the second control valve are both electromagnetic control valves.
In this embodiment, reation kettle 3 is sealed box, crucible 4 has been placed to 3 insides of reation kettle, crucible 4 is used for placing reaction material, makes the SiO gas that generates of reaction can not lose in thermal field and the vacuum cavity.
In this embodiment, the top of vacuum chamber 1 is provided with hangs dress knot 11, vacuum chamber 1's bottom is provided with supporting leg 13, conveniently hoists and transports.
In this embodiment, the outer wall of the vacuum chamber 1 is a double-layer shell structure, water is introduced between the double-layer shells for cooling, and a double-layer shell structure is adopted, and water is introduced between the double-layer jackets for cooling, so that the surface temperature of the chamber can be ensured to be lower than 50 ℃.
In this embodiment, the outer wall of the reaction heating thermal field 2 is provided with a heat-insulating screen, so that the heat inside the thermal field is not dissipated, and the influence on sealing caused by the temperature inside the cavity outside the thermal field being less than or equal to 150 ℃ is avoided.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (6)
1. A vacuum heat treatment device for continuously preparing SiO cathode materials of lithium ion batteries is characterized in that: comprises a reaction section, a condensation section and a material receiving section;
the reaction section comprises a vacuum cavity and a heat treatment component, a reaction heating thermal field is installed in the vacuum cavity, and a reaction kettle is arranged in the reaction heating thermal field;
the condensation section comprises a condensation cylinder body, the condensation cylinder body is communicated with the reaction kettle through an air duct, and a condensation heating furnace is wrapped and installed on the outer ring of the condensation cylinder body;
the material receiving section comprises a material receiving cylinder body, the material receiving cylinder body is communicated with the bottom of the condensing cylinder body, the material receiving cylinder body is connected with an air inlet of an air pumping system through a pipeline, and the air inlet of the air pumping system is connected with the vacuum cavity through a vacuum connecting pipe;
the bottom of condensation barrel is the infundibulate structure, sealing top cap is installed at the top of condensation barrel, the bottom of condensation barrel can be dismantled with receipts material barrel and be connected, the lateral wall of receiving the material barrel is provided with the extraction opening, the extraction opening can be dismantled with the pipeline and be connected, receive the bottom of material barrel and install the gyro wheel, the outer wall of vacuum cavity is double shell structure, it cools off to lead to water between the double shell.
2. The vacuum heat treatment equipment for continuously preparing the SiO negative electrode material of the lithium ion battery according to claim 1, is characterized in that: the outer ring of the gas guide pipe is provided with a transition heating furnace, and two ends of the transition heating furnace are detachably connected with the reaction section and the condensation section respectively.
3. The vacuum heat treatment equipment for continuously preparing the SiO negative electrode material of the lithium ion battery according to claim 1, is characterized in that: the air extraction system is a mechanical pump, a first control valve is installed on the pipeline, a second control valve is installed on the vacuum connecting pipe, and the first control valve and the second control valve are both electromagnetic control valves.
4. The vacuum heat treatment equipment for continuously preparing the SiO negative electrode material of the lithium ion battery according to claim 1, is characterized in that: the reaction kettle is a sealed box body, a crucible is placed in the reaction kettle, and the crucible is used for placing reaction materials.
5. The vacuum heat treatment equipment for continuously preparing the SiO negative electrode material of the lithium ion battery according to claim 1, is characterized in that: the top of the vacuum cavity is provided with a hanging buckle, and the bottom of the vacuum cavity is provided with a supporting leg.
6. The vacuum heat treatment equipment for continuously preparing the SiO negative electrode material of the lithium ion battery according to claim 1, characterized in that: and the outer wall of the reaction heating thermal field is provided with a heat-insulating screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011046389.5A CN112320804B (en) | 2020-09-29 | 2020-09-29 | Vacuum heat treatment equipment for continuously preparing SiO negative electrode material of lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011046389.5A CN112320804B (en) | 2020-09-29 | 2020-09-29 | Vacuum heat treatment equipment for continuously preparing SiO negative electrode material of lithium ion battery |
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| CN112320804A CN112320804A (en) | 2021-02-05 |
| CN112320804B true CN112320804B (en) | 2022-09-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6227318A (en) * | 1985-07-29 | 1987-02-05 | Kawasaki Steel Corp | Method and apparatus for producing pulverous sio powder |
| JPS63103833A (en) * | 1986-10-20 | 1988-05-09 | Seiko Epson Corp | Production of quartz glass |
| JP3571287B2 (en) * | 2000-11-09 | 2004-09-29 | 独立行政法人 科学技術振興機構 | Method for producing silicon oxide nanowires |
| CN107026258A (en) * | 2016-01-29 | 2017-08-08 | 中国科学院上海硅酸盐研究所 | SiO/C combination electrode materials of conductive support load and its preparation method and application |
| CN209685323U (en) * | 2019-03-11 | 2019-11-26 | 杭州致德新材料有限公司 | The equipment for preparing silicon monoxide using biomass silicon source serialization |
| CN109879290B (en) * | 2019-03-11 | 2023-09-12 | 兰溪致德新能源材料有限公司 | Method for continuously preparing silicon monoxide by utilizing silicon-containing biomass |
| CN110311118B (en) * | 2019-07-10 | 2022-05-13 | 洛阳联创锂能科技有限公司 | Disproportionated SiOx material for lithium ion battery and preparation method thereof |
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Address after: 226000 Plant 1, Jufeng Scientific Innovation Industrial Park, west of Jinding Road, south of Xingyuan West Road, Jinxin Street, Tongzhou District, Nantong City, Jiangsu Province Patentee after: Jiangsu Haoyue Vacuum Equipment Co.,Ltd. Address before: 201800 No.49, Xiejing 1st Road, Anting Town, Jiading District, Shanghai Patentee before: SHANGHAI HAOYUE ELECTRIC TECHNOLOGY CO.,LTD. |
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