WO2024000881A1 - 包覆装置及锂电池正极材料包覆系统 - Google Patents

包覆装置及锂电池正极材料包覆系统 Download PDF

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Publication number
WO2024000881A1
WO2024000881A1 PCT/CN2022/122262 CN2022122262W WO2024000881A1 WO 2024000881 A1 WO2024000881 A1 WO 2024000881A1 CN 2022122262 W CN2022122262 W CN 2022122262W WO 2024000881 A1 WO2024000881 A1 WO 2024000881A1
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WIPO (PCT)
Prior art keywords
tank
stirring
bottom cover
coating device
inert gas
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PCT/CN2022/122262
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English (en)
French (fr)
Inventor
黄璐
李长东
王皓
唐盛贺
裴秋宇
邓安志
Original Assignee
宜昌邦普循环科技有限公司
广东邦普循环科技有限公司
湖南邦普循环科技有限公司
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Publication of WO2024000881A1 publication Critical patent/WO2024000881A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/14—Production of inert gas mixtures; Use of inert gases in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/18—Stationary reactors having moving elements inside
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • 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
    • 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
    • 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
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • 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

Definitions

  • the present application relates to the field of lithium battery cathode materials, and in particular to a coating device and a lithium battery cathode material coating system.
  • ternary materials in the field of power batteries gradually matures, consumers are not only satisfied with the need for transportation in the city, but also have higher requirements for the cruising range of new energy vehicles.
  • ternary material batteries with significant advantages in energy density are generally favored by the market. Therefore, high-energy-density ternary materials have extremely competitive value in the future cathode material market.
  • ternary cathode materials are used as power battery cathode materials, their cycle performance and safety performance are far behind those of lithium iron phosphate batteries. Therefore, doping coating methods are often used to further modify the materials to improve their cycle performance. life.
  • the higher the nickel content of the cathode material the higher the energy density, and it is easy to react with oxygen, moisture and carbon dioxide in the air to form lithium carbonate and lithium hydroxide, resulting in excessive impurities.
  • the purpose of this application is to overcome the situation where impurities exceed the standard during the coating process of the ternary cathode material, and provide a coating device and a lithium battery cathode coating system that can reduce the generation of impurities.
  • a coating device includes a reaction tank, a stirring component and a fixing component
  • the reaction tank is provided with a connected mixing chamber, a vacuum pump interface, a feed port, an inert gas inlet and a discharge port.
  • the vacuum pump interface is connected to the exhaust port of the vacuum pump, and the inert gas inlet is connected to the inert gas outlet.
  • the air outlet of the air source is connected;
  • the stirring component is partially located inside the reaction tank, and the stirring component is used to stir and mix the materials in the reaction tank.
  • the reaction tank includes a top cover, a tank body and a bottom cover.
  • the top cover and the bottom cover are both connected to the tank body.
  • the top cover, the tank body and the bottom cover are connected to the tank body.
  • the bottom cover cooperates to form a mixing chamber;
  • the feed port includes a fixed material feed port and a liquid material feed port.
  • the vacuum pump interface and the solid material feed port are located on the top cover.
  • the liquid material feed port and the inert gas The air inlet is provided on the tank body, the discharge port is provided on the bottom cover, the vacuum pump interface, the solid material feed port, the liquid material feed port, and the inert gas inlet The air port and the discharge port are both connected with the mixing chamber.
  • the covering device is provided with a fixing component, and the fixing component is detachably connected to the tank; and/or,
  • the surface of the tank is provided with a heating jacket.
  • the tank further includes a first horizontal clamp and a first vertical clamp, the first horizontal clamp is used to make the tank horizontal to the fixing component, and the first The vertical clamp is used to make the tank vertical to the fixed component;
  • the fixing component includes a fixing frame, a first horizontal fastener and a first vertical fastener.
  • the first horizontal fastener and the first vertical fastener are both arranged on the fixing frame.
  • the fixed frame includes a bracket main body, an upper bracket and a lower bracket.
  • the upper bracket and the lower bracket are spaced apart in the vertical direction on the bracket main body.
  • the first horizontal fastener is arranged on On the upper bracket, the first vertical fastener is provided on the lower bracket; and/or,
  • the upper bracket is provided with a reinforcing fixing part, and the reinforcing fixing part is connected to the tank body.
  • the stirring assembly includes a driving motor, a stirring shaft, a dispersion disk and a plurality of stirring paddles.
  • One end of the stirring shaft is inserted into the tank, and the driving motor is installed on the stirring shaft.
  • the dispersion disk is installed at an end of the stirring shaft close to the bottom cover, and a plurality of stirring paddles are evenly mounted on the stirring shaft.
  • a spiral rake blade is installed on every two stirring blades, and two bar-shaped rake blades are installed on the stirring blade farthest from the top cover.
  • both the spiral rake blades and the bar-shaped rake blades are at a first distance from the tank; and/or,
  • the stirring paddle is a polytetrafluoroethylene stirring paddle; and/or,
  • spiral rake blades are polytetrafluoroethylene spiral rake blades; and/or,
  • the strip-shaped rake blades are polytetrafluoroethylene strip-shaped rake blades.
  • the bottom cover includes a bottom cover fixing clip and a bottom cover fixing screw.
  • the bottom cover fixing clips are respectively connected to the tank body and the bottom cover.
  • the bottom cover is provided with threads.
  • hole, the fixing clip on the bottom cover is provided with a through hole, and the bottom cover fixing screws are respectively inserted into the through hole and the threaded hole; and/or,
  • the reaction tank is provided with a sealing ring, and the sealing ring is installed between the tank body and the bottom cover.
  • a lithium battery cathode material coating system including a vacuum pump, an inert gas source and the coating device described in any of the above embodiments, the air extraction port of the vacuum pump is connected to the vacuum pump interface, the inert gas source The gas outlet is connected with the inert gas inlet.
  • the coating device of this application has a vacuum pump interface and an inert gas inlet on the reaction tank.
  • the air in the reaction tank is extracted through the vacuum pump interface to maintain a vacuum state in the reaction tank.
  • the ternary cathode material is fed through the feed port. It is input into the mixing chamber, and then the ternary cathode material is mixed through the stirring assembly.
  • the inert gas is transported through the inert gas inlet to protect the atmosphere of the ternary cathode material, thereby effectively avoiding the risk of ternary cathode materials.
  • the surface impurities of the ternary cathode material are generated, thereby improving the utilization rate of the ternary cathode material.
  • Figure 1 is a schematic structural diagram of a coating device according to an embodiment
  • Figure 2 is a schematic structural diagram of the coating device shown in Figure 1
  • Figure 3 is a partial structural diagram of the coating device
  • a coating device 10 in one embodiment includes a reaction tank 100 and a stirring assembly 200; the reaction tank 100 is provided with a connected mixing chamber 102, a vacuum pump interface 104, a feed port 106, and an inert gas inlet. Port 108 and discharge port 1010; part of the stirring assembly 200 is located inside the reaction tank 100, and the stirring assembly 200 is used to stir and mix the materials in the reaction tank 100.
  • the reaction tank 100 is provided with a vacuum pump interface 104 and an inert gas inlet 108.
  • the air in the reaction tank 100 is extracted through the vacuum pump interface 104 to maintain a vacuum state in the reaction tank 100.
  • 106 Input the ternary cathode material into the mixing chamber 102, and then mix the ternary cathode material through the stirring assembly 200.
  • the inert gas is delivered through the inert gas inlet 108, and the ternary cathode material is mixed. Atmosphere protection can effectively avoid the generation of surface impurities in the ternary cathode material, thus improving the utilization rate of the ternary cathode material.
  • the reaction tank 100 includes a top cover 110, a tank body 120, and a bottom cover 130.
  • the top cover 110 and the bottom cover 130 are both connected to the tank body 120.
  • the top cover 110 The tank 120 and the bottom cover 130 cooperate to form the mixing chamber 102;
  • the feed port 106 includes a fixed material feed port 106a and a liquid material feed port 106b.
  • the vacuum pump interface 104 and the solid material feed port 106a are located on the top cover 110.
  • the liquid material inlet 106b and the inert gas inlet 108 are located on the tank 120, the outlet 1010 is located on the bottom cover 130, the vacuum pump interface 104, the solid material inlet 106a, the liquid material inlet 106b, and the inert gas inlet 106b.
  • the gas inlet 108 and the outlet 1010 are both connected to the mixing chamber 102 .
  • the covering device 10 is provided with a fixing component 300 , and the fixing component 300 is detachably connected to the tank body 120 .
  • the fixing component 300 is detachably connected to the tank body 120 .
  • the cathode material can be dispersed in the coating liquid, thereby effectively improving the production efficiency and the coating uniformity of the bulk ternary cathode material, and further Effectively reduce the generation of surface impurities in ternary cathode materials.
  • a heating jacket 1210 is provided on the surface of the tank 120 .
  • reaction tank 100 is heated through the heating jacket 1210 to maintain a dry environment inside the tank 120, to avoid the occurrence of impurities produced by the reaction between moisture and the ternary cathode material, thereby effectively reducing the surface of the ternary cathode material. Impurities are generated.
  • the tank 120 further includes a first horizontal clamp 1220 and a first vertical clamp 1230 .
  • the first horizontal clamp 1220 is used to make the tank 120 horizontal to the fixed position.
  • Assembly 300, the first vertical clamp 1230 is used to make the tank 120 perpendicular to the fixing assembly 300;
  • the fixing assembly 300 includes a fixing frame 310, a first horizontal fastener 320 and a first vertical fastener 330, the first horizontal fastener 320 and The first vertical fasteners 330 are arranged on the fixing frame 310 .
  • the tank 120 when the first horizontal fastener 1220 is fastened with the first horizontal fastener 320, the tank 120 is fixed to the fixing frame 310 in the horizontal direction; when the first vertical fastener 1230 is fastened with the first vertical fastener 330 When connected, the tank body 120 is fixed to the fixing frame 310 in a vertical direction. Therefore, the tank 120 can be placed horizontally or vertically on the fixed assembly 300 through the first horizontal fastener 1220 and the first vertical fastener 1230, which can realize the movement of materials in both horizontal and vertical directions.
  • the vertical stirring assembly The operation of 200 realizes the dispersion of the cathode material in the coating liquid, and a heating jacket 1210 is provided on the surface of the tank 120 so that the operation of the stirring assembly 200 in the horizontal direction realizes the coating drying process.
  • This direction can increase the heating area and effectively Improve production efficiency and coating uniformity of ternary cathode materials, while effectively reducing the generation of surface impurities of ternary cathode materials.
  • the fixing bracket 310 includes a bracket main body 3110 , an upper bracket 3120 and a lower bracket 3130 .
  • the upper bracket 3120 and the lower bracket 3130 are spaced apart in the vertical direction on the bracket main body 3110 , the first horizontal fastener 320 is provided on the upper bracket 3120, and the first vertical fastener 330 is provided on the lower bracket 3130.
  • the tank 120 is placed horizontally on the upper layer.
  • the bracket 3120 can be placed vertically on the lower bracket 3130 to realize the movement of materials in both horizontal and vertical directions.
  • the upper bracket 3120 is provided with a reinforcing fixing part 340, and the reinforcing fixing part 340 is connected to the tank body 120. It can be understood that the function of the reinforcing fixing member 340 is to make the connection between the tank body 120 and the fixing bracket 310 more stable.
  • the stirring assembly 200 includes a driving motor 210, a stirring shaft 220, a dispersion plate 230 and a plurality of stirring paddles 240.
  • One end of the stirring shaft 220 is inserted into the tank 120.
  • the drive motor 210 is installed at the end of 220 away from the tank 120
  • the dispersion disk 230 is installed at the end of 220 close to the bottom cover 130
  • multiple stirring paddles 240 are evenly mounted on the 220.
  • the dispersion disk 230 is driven to prevent the material from sinking to the bottom due to excessive specific gravity, so that the material and the coating liquid are more fully contacted.
  • a spiral rake blade 2410 is installed on every two stirring paddles 240, and two strips are installed on the stirring paddle 240 farthest from the top cover 110. Shape rake leaves 2420. It should be noted that the spiral rake blades 2410 make the operation coverage of the stirring paddle 240 larger, thereby making the material stirring process more uniform.
  • the strip rake blades cooperate with the stirring of the dispersion disk 230 to avoid the material sinking to the bottom, thus effectively improving the coating uniformity of the ternary cathode material and further reducing the ternary Surface impurities are generated in the cathode material.
  • the first distance refers to the spiral rake blades 2410 and strip rake blades 2420 are almost close to the surface of the tank 120 but there is a certain gap, effectively ensuring the coverage of the entire inside of the tank 120 without scratching the tank 120, thereby effectively improving the utilization rate of the ternary cathode material , thereby effectively improving the coating uniformity of the ternary cathode material. and/or, in one embodiment, a stirring paddle 240.
  • the stirring paddle 240 made of polytetrafluoroethylene can reduce the introduction of magnetic substances into the material, thereby effectively reducing the generation of impurities in the ternary cathode material.
  • the spiral rake blades 2410 are polytetrafluoroethylene spiral rake blades; it can be understood that using the spiral rake blades 2410 made of polytetrafluoroethylene can reduce the introduction of magnetic substances into the material. , thereby effectively reducing the generation of impurities in the ternary cathode material.
  • the strip rake blades 2420 are polytetrafluoroethylene strip rake blades. It can be understood that the use of strip-shaped rake blades 2420 made of polytetrafluoroethylene can reduce the introduction of magnetic substances into the material, thereby effectively reducing the generation of impurities in the ternary cathode material.
  • the bottom cover 130 includes a bottom cover fixing clip 1310 and a bottom cover fixing screw 1320.
  • the bottom cover 130 fixing clips are connected to the tank 120 and the bottom cover 130 respectively.
  • the cover 130 is provided with a threaded hole
  • the bottom cover fixing clip 1310 is provided with a through hole
  • the bottom cover fixing screw 1320 is inserted into the through hole and the threaded hole. It can be understood that by arranging the bottom cover fixing screw 1320 and the bottom cover fixing clip 1310, the tank body 120 and the bottom cover 130 can be detachably connected, which facilitates subsequent device maintenance and repair, and also facilitates cleaning of the covering device 10 to avoid expiration. Impurities generated from residues may affect the ternary cathode material.
  • the reaction tank 100 is provided with a sealing ring 140 , and the sealing ring 140 is installed between the tank body 120 and the bottom cover 130 . It should be noted that by providing the sealing ring 140, the sealing performance of the can 120 is effectively ensured, thereby ensuring the vacuum environment in the can 120, thereby effectively reducing the generation of impurities in the ternary cathode material.
  • This application also provides a lithium battery cathode material coating system, including a vacuum pump, an inert gas source and the coating device described in any of the above embodiments.
  • the air extraction port of the vacuum pump is connected to the vacuum pump interface 104, and the inert gas source is The gas outlet is connected with the inert gas inlet 108 .
  • the reaction tank 100 is provided with a vacuum pump interface 104 and an inert gas inlet 108.
  • the vacuum pump pumps out the air in the reaction tank 100 through the vacuum pump interface 104, so that the vacuum state is maintained in the tank body 120 of the reaction tank 100.
  • the inert gas source is transported through the inert gas inlet 108
  • the inert gas protects the atmosphere of the ternary cathode material, thereby effectively avoiding the generation of surface impurities in the ternary cathode material, thereby increasing the utilization rate of the ternary cathode material.
  • a heating jacket layer 1210 is added to the tank body 120, and the tank body 120 is heated through the heating jacket layer 1210, so that the tank body 120 maintains a dry environment and avoids the occurrence of impurities generated by the reaction between the ternary cathode material and moisture.

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  • Organic Chemistry (AREA)
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Abstract

本申请提供一种包覆装置及锂电池正极材料包覆系统，包覆装置包括反应罐、搅拌组件及固定组件；反应罐开设有相连通的混合腔、真空泵接口、进料口、惰性气体进气口及出料口，真空泵接口与真空泵的抽气口连通，惰性气体进气口与惰性气体气源的出气口连通；搅拌组件部分位于反应罐的内部，搅拌组件用于将反应罐内的材料搅拌混匀。

Description

包覆装置及锂电池正极材料包覆系统 技术领域
本申请涉及锂电池正极材料领域，特别是涉及一种包覆装置及锂电池正极材料包覆系统。
背景技术
随着三元材料在动力电池领域的安全性逐步成熟，消费者也不仅仅满足于城市内代步的需求，而是对新能源汽车的续航里程提出了更高的要求。目前，基于消费市场对于续航里程的需求提升，在能量密度上具有显著优势的三元材料电池被市场普遍看好。因此高能量密度的三元材料在未来的正极材料市场上极具竞争价值。
然而，三元正极材料作为动力电池正极材料时，其循环性能和安全性能与磷酸铁锂电池有一定的差距，因此目前常采用掺杂包覆的方法对材料进行进一步的改性，提升其循环寿命。而镍含量越高的正极材料，能量密度越高，也很容易与空气中的氧气、水份及二氧化碳发生反应生成碳酸锂及氢氧化锂，出现杂质超标的情况。
发明内容
本申请的目的是克服三元正极材料在包覆过程中出现杂质超标的情况，提供一种能够减少杂质生成的包覆装置及锂电池正极包覆系统。
本申请的目的是通过以下技术方案来实现的：
一种包覆装置，包括反应罐、搅拌组件及固定组件；
所述反应罐开设有相连通的混合腔、真空泵接口、进料口、惰性气体进气口及出料口，所述真空泵接口与真空泵的抽气口连通，所述惰性气体进气口与惰性气体气源的出气口连通；
所述搅拌组件部分位于所述反应罐的内部，所述搅拌组件用于将所述反应罐内的材料搅拌混匀。
在其中一个实施例中，所述反应罐包括顶盖、罐体及底盖，所述顶盖和所述底盖均与所述罐体连接，所述顶盖、所述罐体及所述底盖配合形成混合腔；
所述进料口包括固定料进料口和液体料进料口，所述真空泵接口和所述固体料进料口设于所述顶盖上，所述液体料进料口和所述惰性气体进气口设于所述罐体上，所述出料口设于所述底盖上，所述真空泵接口、所述固体料进料口、所述液体料进料口、所述惰性气体进气口及所述出料口均与所述混合腔连通。
在其中一个实施例中，所述包覆装置设有固定组件，所述固定组件与所述罐体可拆卸连接；及/或，
所述罐体的表面设有加热套层。
在其中一个实施例中，所述罐体还包括第一水平卡件和第一垂直卡件，所述第一水平卡件用于使所述罐体水平于所述固定组件，所述第一垂直卡件用于使所述罐体垂直于所述固定组件；
所述固定组件包括固定架、第一水平扣件及第一垂直扣件，所述第一水平扣件和所述第一垂直扣件均设置在所述固定架上。
在其中一个实施例中，所述固定架包括支架主体、上层支架和下层支架，所述上层支架和所述下层支架沿竖直方向间隔设置于支架主体上，所述第一水平扣件设置在所述上层支架上，所述第一垂直扣件设置在下层支架上；及/或，
所述上层支架设有加强固定件，所述加强固定件与所述罐体连接。
在其中一个实施例中，所述搅拌组件包括驱动电机、搅拌轴、分散盘及多个搅拌桨，所述搅拌轴的一端穿设于所述罐体内，所述驱动电机安装在所述搅拌轴远离所述罐体的一端，所述分散盘安装在所述搅拌轴靠近所述底盖的一端，多个所述搅拌桨均匀套设在所述搅拌轴上。
在其中一个实施例中，每两个所述搅拌桨上安装有一个螺旋耙叶，且在距离所述顶盖最远的一所述搅拌桨上安装有两个条形耙叶。
在其中一个实施例中，所述螺旋耙叶和所述条形耙叶均与所述罐体存在有第一距离；及/或，
所述搅拌桨为聚四氟乙烯搅拌桨；及/或，
所述螺旋耙叶为聚四氟乙烯螺旋耙叶；及/或，
所述条形耙叶为聚四氟乙烯条形耙叶。
在其中一个实施例中，所述底盖包括底盖固定夹和底盖固定螺丝，所述底盖固定夹分别连接于所述罐体和所述底盖上，所述底盖上开设有螺纹孔，所述底盖上固定夹开设有通孔，所述底盖固定螺丝分别穿设于所述通孔和所述螺纹孔中；及/或，
所述反应罐设有密封圈，所述密封圈安装在所述罐体与所述底盖之间。
一种锂电池正极材料包覆系统，包括真空泵、惰性气体气源及上述任一项实施例所述的 包覆装置，所述真空泵的抽气口与所述真空泵接口连通，所述惰性气体气源的出气口与所述惰性气体进气口连通。
与现有技术相比，本申请至少具有以下优点：
本申请的包覆装置，在反应罐上开设有真空泵接口和惰性气体进气口，通过真空泵接口将反应罐内的空气抽出，使得反应罐内保持真空状态，通过进料口将三元正极材料输入至混合腔内，再通过搅拌组件对三元正极材料进行混匀，其中，在搅拌过程中通过惰性气体进气口输送惰性气体，对三元正极材料进行气氛保护，从而有效地避免了三元正极材料的表面杂质生成，进而提高了三元正极材料的使用率。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为一实施例的包覆装置的结构示意图；
图2为图1所示包覆装置的结构示意图
图3为包覆装置的局部结构示意图；
附图标记：包覆装置10；反应罐100；混合腔102；真空泵接口104；进料口106；固定料进料口106a；液体料进料口106b；惰性气体进气口108；出料口1010；顶盖110；罐体120；加热套层1210；第一水平卡件1220；第一垂直卡件1230；底盖130；底盖固定夹1310；底盖固定螺丝1320；密封圈140；搅拌组件200；驱动电机210；搅拌轴220；分散盘230；搅拌桨240；螺旋耙叶2410；条形耙叶2420；固定组件300；固定架310；支架主体3110；上层支架3120；下层支架3130；第一水平扣件320；第一垂直扣件330；加强固定件340。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳实施方式。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本申请的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本申请。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1和图2，一实施方式的包覆装置10包括反应罐100和搅拌组件200；反应罐100开设有相连通的混合腔102、真空泵接口104、进料口106、惰性气体进气口108及出料口1010；搅拌组件200的部分位于反应罐100的内部，搅拌组件200用于将反应罐100内的材料搅拌混匀。
在本实施例中，在反应罐100上开设有真空泵接口104和惰性气体进气口108，通过真空泵接口104将反应罐100内的空气抽出，使得反应罐100内保持真空状态，通过进料口106将三元正极材料输入至混合腔102内，再通过搅拌组件200对三元正极材料进行混匀，其中，在搅拌过程中通过惰性气体进气口108输送惰性气体，对三元正极材料进行气氛保护，从而有效地避免了三元正极材料的表面杂质生成，进而提高了三元正极材料的使用率。
如图1和图2所示，在其中一个实施例中，反应罐100包括顶盖110、罐体120、及底盖130，顶盖110和底盖130均与罐体120连接，顶盖110、罐体120及底盖130配合形成混合腔102；进料口106包括固定料进料口106a和液体料进料口106b，真空泵接口104和固体料进料口106a设于顶盖110上，液体料进料口106b和惰性气体进气口108设于罐体120上，出料口1010设于底盖130上，真空泵接口104、固体料进料口106a、液体料进料口106b、惰性气体进气口108及出料口1010均与混合腔102连通。
如图1和图2所示，在其中一个实施例中，包覆装置10设有固定组件300，固定组件300与罐体120可拆卸连接。可以理解的是，通过改变罐体120与固定组件300的位置连接关系，可以实现正极材料在包覆液内的分散，从而有效地提高生产效率和体三元正极材料的包覆均匀性，进而有效地减少三元正极材料的表面杂质生成。及/或，在其中一个实施例中，罐体120的表面设有加热套层1210。可以理解的是，通过加热套层1210对反应罐100进行加热，使 得罐体120内保持干燥环境，避免水分与三元正极材料反应产生杂质的情况出现，进而有效地减少三元正极材料的表面杂质生成。
如图1和图2所示，在其中一个实施例中，罐体120还包括第一水平卡件1220和第一垂直卡件1230，第一水平卡件1220用于使罐体120水平于固定组件300，第一垂直卡件1230用于使罐体120垂直于固定组件300；固定组件300包括固定架310、第一水平扣件320及第一垂直扣件330，第一水平扣件320和第一垂直扣件330均设置在固定架310上。需要说明的是，当第一水平卡件1220与第一水平扣件320扣接时，罐体120沿水平方向固定于固定架310；当第一垂直卡件1230与第一垂直扣件330扣接时，罐体120沿垂直方向固定于固定架310。因此可以通过第一水平卡扣件1220和第一垂直卡扣件1230使罐体120水平或垂直放置于固定组件300上，可以实现物料在水平及垂直两个方向上的运转，垂直方向搅拌组件200的运转实现正极材料在包覆液内的分散，且在罐体120的表面设有加热套层1210使得水平方向搅拌组件200的运转实现包覆干燥过程，该方向可增加受热面积，有效地提高生产效率和提高三元正极材料的包覆均匀性，同时有效地减少三元正极材料的表面杂质生成。
如图1和图2所示，在其中一个实施例中，固定架310包括支架主体3110、上层支架3120和下层支架3130，上层支架3120和下层支架3130沿竖直方向间隔设置于支架主体3110上，第一水平扣件320设置在上层支架3120上，第一垂直扣件330设置在下层支架3130上。需要说明的是，通过使第一水平卡扣件1220与第一水平扣件320扣接、或第一垂直卡扣件1230与第一垂直扣件330扣接，使得罐体120水平放置于上层支架3120或垂直放置于下层支架3130上，可以实现物料在水平及垂直两个方向上的运转。及/或，在其中一个实施例中，上层支架3120设有加强固定件340，加强固定件340与罐体120连接。可以理解的是，加强固定件340的作用是使罐体120与固定架310的连接更加地稳固。
如图1和图2所示，在其中一个实施例中，搅拌组件200包括驱动电机210、搅拌轴220、分散盘230及多个搅拌桨240，搅拌轴220的一端穿设于罐体120内，驱动电机210安装在220远离罐体120的一端，分散盘230安装220靠近底盖130的一端，多个搅拌桨240均匀套设在220上，需要说明的是，通过调整驱动电机210的频率，使得220的旋转方向可以顺时针或逆时针，再由220带动搅拌桨240顺时针或逆时针转动，从而有效地提升三元正极材料的包覆均匀性，进而有效地减少三元正极材料的表面杂质生成。
进一步地，当罐体120垂直放置于固定架310时，通过驱动分散盘230，避免物料因比 重过大造成沉底，使物料与包覆液更加充分地接触。
如图1和图2所示，在其中一个实施例中，每两个搅拌桨240上安装有一个螺旋耙叶2410，且在距离顶盖110最远的一搅拌桨240上安装有两个条形耙叶2420。需要说明的是，螺旋耙叶2410使得搅拌桨240的运作覆盖范围更大，从而使得物料搅拌过程更加地均匀。当罐体120垂直放置于固定架310时，条形耙叶配合分散盘230的搅拌，避免了物料沉底的情况出现，进而有效地提升三元正极材料的包覆均匀性，进一步地减少三元正极材料的表面杂质生成。
如图1和图2所示，在其中一个实施例中，螺旋耙叶2410和条形耙叶2420与罐体120存在有第一距离；需要说明的是，第一距离指的是螺旋耙叶2410和条形耙叶2420几乎贴近罐体120表面但存在有一定的间隙，有效地保证全罐体120内部的覆盖，同时不会刮蹭罐体120，从而有效地提高三元正极材料使用率，进而有效地提升了三元正极材料的包覆均匀性。及/或，在其中一个实施例中，搅拌桨240。可以理解的是，采用聚四氟乙烯制成的搅拌桨240，能够减少材料内磁性物质的引入，从而有效地减少三元正极材料的杂质生成。及/或，在其中一个实施例中，螺旋耙叶2410为聚四氟乙烯螺旋耙叶；可以理解的是，采用聚四氟乙烯制成的螺旋耙叶2410，能够减少材料内磁性物质的引入，从而有效地减少三元正极材料的杂质生成。及/或，在其中一个实施例中，条形耙叶2420为聚四氟乙烯条形耙叶。可以理解的是，采用聚四氟乙烯制成的条形耙叶2420，能够减少材料内磁性物质的引入，从而有效地减少三元正极材料的杂质生成。
如图1至图3所示，在其中一个实施例中，底盖130包括底盖固定夹1310和底盖固定螺丝1320，底盖130固定夹分别连接于罐体120和底盖130上，底盖130上开设有螺纹孔，底盖固定夹1310上开设有通孔，底盖固定螺丝1320穿设于通孔和螺纹孔中。可以理解的是，通过设置底盖固定螺丝1320和底盖固定夹1310，使得罐体120与底盖130可拆卸连接，便于后期装置保养和维修，同时便于对包覆装置10进行清理，避免过期残留物产生杂质对三元正极材料造成影响的情况发生。及/或，在其中一个实施例中，反应罐100设有密封圈140，密封圈140安装在罐体120与底盖130之间。需要说明的是，通过设置密封圈140，有效地保证了罐体120的密封性，从而保证了罐体120内的真空环境，进而有效地减少三元正极材料的杂质生成。
本申请还提供一种锂电池正极材料包覆系统，包括真空泵、惰性气体气源及上述任一项 实施例所述的包覆装置，真空泵的抽气口与真空泵接口104连通，惰性气体气源的出气口与惰性气体进气口108连通。
在本实施例中，在反应罐100上开设有真空泵接口104和惰性气体进气口108，真空泵通过真空泵接口104将反应罐100内的空气抽出，使得反应罐100的罐体120内保持真空状态，通过进料口106将三元正极材料输入至混合腔102内，再通过搅拌组件200对三元正极材料进行混匀，其中在搅拌过程中，惰性气体气源通过惰性气体进气口108输送惰性气体，对三元正极材料进行气氛保护，从而有效地避免了三元正极材料的表面杂质生成，进而提高了三元正极材料的使用率。进一步地，在罐体120上加设有加热套层1210，通过加热套层1210对罐体120进行加热，使得罐体120保持干燥环境，避免三元正极材料与水分反应生成杂质的情况出现，进而有效地减少杂质的生成，再通过反应罐120和搅拌组件200的组合使用，使得同一装置内实现三元正极材料湿法包覆过程中所需的全部步骤，即混料、包覆、干燥过程，有效地减少生产时间和减少材料周转造成的成本损失。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本申请范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种包覆装置，其特征在于，包括反应罐和搅拌组件；
    所述反应罐开设有相连通的混合腔、真空泵接口、进料口、惰性气体进气口及出料口，所述真空泵接口与真空泵的抽气口连通，所述惰性气体进气口与惰性气体气源的出气口连通；
    所述搅拌组件部分位于所述反应罐的内部，所述搅拌组件用于将所述反应罐内的材料搅拌混匀。
  2. 根据权利要求1所述的包覆装置，其特征在于，所述反应罐包括顶盖、罐体及底盖，所述顶盖和所述底盖均与所述罐体连接，所述顶盖、所述罐体及所述底盖配合形成混合腔；
    所述进料口包括固定料进料口和液体料进料口，所述真空泵接口和所述固体料进料口设于所述顶盖上，所述液体料进料口和所述惰性气体进气口设于所述罐体上，所述出料口设于所述底盖上，所述真空泵接口、所述固体料进料口、所述液体料进料口、所述惰性气体进气口及所述出料口均与所述混合腔连通。
  3. 根据权利要求2所述的包覆装置，其特征在于，所述包覆装置设有固定组件，所述固定组件与所述罐体可拆卸连接；及/或，
    所述罐体的表面设有加热套层。
  4. 根据权利要求3所述的包覆装置，其特征在于，所述罐体还包括第一水平卡件和第一垂直卡件，所述第一水平卡件用于使所述罐体水平于所述固定组件，所述第一垂直卡件用于使所述罐体垂直于所述固定组件；
    所述固定组件包括固定架、第一水平扣件及第一垂直扣件，所述第一水平扣件和所述第一垂直扣件均设置在所述固定架上。
  5. 根据权利要求4所述的包覆装置，其特征在于，所述固定架包括支架主体、上层支架和下层支架，所述上层支架和所述下层支架沿竖直方向间隔设置于支架主体上，所述第一水平扣件设置在所述上层支架上，所述第一垂直扣件设置在下层支架上；及/或，
    所述上层支架设有加强固定件，所述加强固定件与所述罐体连接。
  6. 根据权利要求2所述的包覆装置，其特征在于，所述搅拌组件包括驱动电机、搅拌轴、分散盘及多个搅拌桨，所述搅拌轴的一端穿设于所述罐体内，所述驱动电机安装在所述搅拌轴远离所述罐体的一端，所述分散盘安装在所述搅拌轴靠近所述底盖的一端，多个所述搅拌 桨均匀套设在所述搅拌轴上。
  7. 根据权利要求6所述的包覆装置，其特征在于，每两个所述搅拌桨上安装有一个螺旋耙叶，且在距离所述顶盖最远的一所述搅拌桨上安装有两个条形耙叶。
  8. 根据权利要求7所述的包覆装置，其特征在于，所述螺旋耙叶和所述条形耙叶均与所述罐体存在有第一距离；及/或，
    所述搅拌桨为聚四氟乙烯搅拌桨；及/或，
    所述螺旋耙叶为聚四氟乙烯螺旋耙叶；及/或，
    所述条形耙叶为聚四氟乙烯条形耙叶。
  9. 根据权利要求2所述的包覆装置，其特征在于，所述底盖包括底盖固定夹和底盖固定螺丝，所述底盖固定夹分别连接于所述罐体和所述底盖上，所述底盖上开设有螺纹孔，所述底盖固定夹上开设有通孔，所述底盖固定螺丝分别穿设于所述通孔和所述螺纹孔中；及/或，
    所述反应罐设有密封圈，所述密封圈安装在所述罐体与所述底盖之间。
  10. 一种锂电池正极材料包覆系统，其特征在于，包括真空泵、惰性气体气源及权利要求1-9中任一项所述的包覆装置，所述真空泵的抽气口与所述真空泵接口连通，所述惰性气体气源的出气口与所述惰性气体进气口连通。
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