A lithium battery positive electrode material automatic production system and method

Abstract

The present invention relates to an automatic production system and method for positive electrode materials for lithium batteries. An automatic production system for positive electrode materials for lithium batteries, comprising: a batching mechanism, including a plurality of feeding components, a high-mixing device connected to the plurality of feeding components, and a mixing bin connected to the high-mixing device; a first sintering mechanism; a crushing mechanism; a dry coating mechanism and a wet coating structure respectively connected to the crushing mechanism; and a second sintering mechanism respectively connected to the dry coating mechanism and the wet coating mechanism; a packaging mechanism respectively connected to the crushing mechanism and the second sintering mechanism; the connection is a sealed connection through a connecting pipe. Compared with the prior art, the present method adopts an automated production line to produce positive electrode materials for lithium batteries. The production process is fully closed, which can avoid the overflow of dust and the introduction of foreign matter such as metal, and adopts a variety of production modes to effectively improve production efficiency and reduce material production costs.

Description

Technical Field

[0001] The present invention relates to the field of lithium battery production, and in particular to an automatic production system and method for lithium battery positive electrode materials. Background Art

[0002] Lithium batteries are mainly composed of positive electrode materials, negative electrode materials, separators and electrolytes. The positive electrode materials account for more than 40% of the total cost of lithium batteries, and the performance of the positive electrode materials directly affects the various performance indicators of lithium batteries. Therefore, lithium battery positive electrode materials occupy a core position in lithium batteries.

[0003] The production process of positive electrode materials for lithium batteries includes batching, sintering, crushing, coating, packaging, etc. In the existing technology, materials are transferred manually between each link. Since the materials are all micron-level, and some are even nano-level powder particles, dust may be generated during the transportation and transfer process. Once workers inhale it, it is harmful to the body, and the work intensity of production line employees is high and the efficiency is low. If materials are not handled in time, they are easy to absorb moisture or mix with foreign matter, which seriously affects the consistency and quality of the product.

[0004] Patent document with application number 201510777219.7 discloses an intelligent production process for lithium battery positive electrode materials. Although it is also an automatic production method, its main technical direction is to prevent other impurities from entering the positive electrode material, and there are still problems in protecting against the outside world.

[0005] Therefore, there are deficiencies in this field, and inventors are urgently needed to innovate and develop. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a system and method for automatically producing positive electrode materials for lithium batteries, which can realize automatic production, have little impact on the environment, and produce in multiple modes, thereby reducing manual participation.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An automatic production system for lithium battery positive electrode materials, comprising:

[0009] The batching mechanism includes a plurality of feeding components, a high-mixing device connected to the plurality of feeding components, and a mixing silo connected to the high-mixing device;

[0010] The feeding assembly includes a batching vacuum feeding device, a raw material silo connected to the batching vacuum feeding device, a weighing tank connected to the raw material silo, and a batching spiral feeder connected to the weighing tank;

[0011] A first sintering mechanism comprises a first loading device connected to the mixing bin, a first sintering device and a first bin;

[0012] The pulverizing mechanism comprises a pulverizing vacuum feeding device connected to the first silo, a pulverizer connected to the pulverizing vacuum feeding device, and a material temporary storage bin connected to the pulverizer;

[0013] A dry coating mechanism and a wet coating structure respectively connected to the pulverizing mechanism;

[0014] and a second sintering mechanism connected to the dry coating mechanism and the wet coating mechanism respectively;

[0015] A packaging mechanism connected to the pulverizing mechanism and the second sintering mechanism respectively;

[0016] The connection is a sealed connection through a connecting pipe.

[0017] Preferably, in the automatic production system of lithium battery positive electrode materials, in the first sintering mechanism, the first potting device includes a first sintering vacuum feeding device connected to the mixing bin, a first potting bin connected to the first sintering vacuum feeding device, and a first potting machine connected to the first potting bin;

[0018] The first sintering device comprises a first outer circulation track carrying a plurality of saggers, a first flattening and punching device, a first bowl stacking machine, a first sintering kiln, a first bowl separator, a first material dumper and a first outer circulation track sealing cover; the first outer circulation track aligns the saggers with the bowl loading machine and passes through the first flattening and punching device, the first bowl stacking machine, the first sintering kiln, the first bowl separator and the first material dumper in sequence;

[0019] The first material dumper is connected to the first material bin;

[0020] The first outer circulation track sealing cover seals the first sintering device.

[0021] Preferably, in the automatic production system of lithium battery positive electrode materials, the pulverizing mechanism further includes a pulverizing bin connected to the pulverizing vacuum feeding device and a pulverizing vibration screen connected to the pulverizing bin between the pulverizing vacuum feeding device and the pulverizer, and the pulverizing vibration screen is connected to the pulverizer;

[0022] The pulverizer is connected to the material temporary storage bin via a cyclone separator;

[0023] The pulverizer is also connected to the dust collection bin via a circulating fan;

[0024] The fine dust collection bin is also connected to the cyclone separator.

[0025] Preferably, the automatic production system for lithium battery positive electrode materials, the packaging mechanism includes a packaging vacuum feeding device connected to the material temporary storage bin, a batch mixer connected to the packaging vacuum feeding device, a packaging vibration screen connected to the batch mixer, a packaging silo connected to the packaging vibration screen, and a packaging machine connected to the packaging silo.

[0026] Preferably, the automatic production system for lithium battery positive electrode materials, the dry coating mechanism includes a dry vacuum feeding device connected to the material temporary storage bin, a dry silo connected to the dry vacuum feeding device, a dry weighing tank connected to the dry weighing tank, a dry spiral feeder connected to the dry spiral feeder, and a dry mixing silo connected to the dry high mixing equipment.

[0027] Preferably, the automatic production system of lithium battery positive electrode materials, the wet coating mechanism includes a wet vacuum feeding device connected to the material temporary storage bin, a wet temporary storage bin connected to the wet vacuum feeding device, a wet weighing tank connected to the wet temporary storage bin, a wet spiral feeder connected to the wet weighing tank, a coating tank connected to the wet spiral feeder, a filter press connected to the coating tank through a feeding pump, a dryer connected to the filter press, and a wet silo connected to the dryer;

[0028] The coating tank is equipped with a water making machine and a coating agent tank;

[0029] The dryer is equipped with an exhaust fan.

[0030] Preferably, in the automatic production system for lithium battery positive electrode materials, the second sintering mechanism comprises a second loading device, a second sintering device and a second silo;

[0031] The second potting device comprises a second sintering vacuum feeding device, a second potting silo connected to the second sintering vacuum feeding device, and a second potting machine connected to the second potting silo;

[0032] The second sintering device comprises a second outer circulation track carrying a plurality of saggers, a second flattening and punching device, a second sagger stacking machine, a second sintering kiln, a second sagger dividing machine, a second material dumping machine, and a second outer circulation track sealing cover; the second outer circulation track aligns the saggers with the sagger loading machine, and passes through the second flattening and punching device, the second sagger stacking machine, the second sintering kiln, the second sagger dividing machine, and the second material dumping machine in sequence;

[0033] The second material dumper is connected to the second material bin;

[0034] The second outer circulation track sealing cover seals the second sintering device.

[0035] Preferably, in the automatic production system for lithium battery positive electrode materials, the high-mixing equipment is a high-speed mixer or a ribbon mixer;

[0036] The dry high mixing equipment is a high-speed mixer or a ribbon mixer.

[0037] A method for automatically producing positive electrode materials for lithium batteries, using the automatic production system for positive electrode materials for lithium batteries for production, comprising the steps of:

[0038] S1. Adjust the response parameters of the batching mechanism, and fully mix several raw materials of the lithium battery positive electrode material by high-speed stirring;

[0039] S2, the first loading device transports the mixed raw materials to the first sintering mechanism for a sintering process;

[0040] S3, the crushing mechanism crushes the primary sintered material and transports the crushed material to the temporary material storage bin;

[0041] S4, reading the current system working mode information, if the working mode is the normal mode, executing step S7; if the working mode is the dry mode, executing step S5; if the working mode is the wet mode, executing step S6;

[0042] S5, the dry coating mechanism performs dry coating treatment on the materials in the temporary storage bin, and transports the treated materials to the second sintering mechanism for secondary sintering treatment, and then executes step S7;

[0043] S6, the wet coating mechanism performs wet coating treatment on the material in the temporary storage bin, and transports the treated material to the second sintering mechanism for secondary sintering treatment, and then executes step S7;

[0044] S7. The packaging mechanism packages the materials.

[0045] Preferably, in the automatic production method of lithium battery positive electrode materials, in step S1, the response parameter includes the weight of each raw material loaded each time.

[0046] Compared with the prior art, the present invention provides an automatic production system and method for lithium battery positive electrode materials. The method adopts an automated production line to produce lithium battery positive electrode materials. The entire production process is closed, which can avoid the overflow of dust and the introduction of foreign matter such as metal. It also adopts a variety of production modes to effectively improve production efficiency and reduce material production costs. At the same time, it reduces labor and is efficient and convenient, which is a great progress in this field. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1It is a structural block diagram of the automatic production system of lithium battery positive electrode materials provided by the present invention;

[0048] Figure 2 It is a structural diagram of the batching mechanism provided by the present invention;

[0049] Figure 3 is a structural diagram of a first sintering mechanism provided by the present invention;

[0050] Figure 4 It is a structural diagram of the crushing mechanism provided by the present invention;

[0051] Figure 5 It is a structural diagram of the dry coating mechanism provided by the present invention;

[0052] Figure 6 It is a structural diagram of the wet coating mechanism provided by the present invention;

[0053] Figure 7 is a structural diagram of a second sintering mechanism provided by the present invention;

[0054] Figure 8 It is a structural diagram of the packaging mechanism provided by the present invention. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] Example 1

[0057] The present invention provides a method for automatically producing a positive electrode material for a lithium battery, comprising the steps of:

[0058] S1. Adjust the response parameters of the batching mechanism, and fully mix several raw materials of the lithium battery positive electrode material by high-speed stirring;

[0059] S2, the first loading device transports the mixed raw materials to the first sintering mechanism for a primary sintering process; the sintering conditions of the primary sintering are: temperature 200-1200°C, time 10-50h;

[0060] S3, the crushing mechanism crushes the primary sintered material and transports the crushed material to the temporary material storage bin;

[0061] S4, reading the current system working mode information, if the working mode is the normal mode, executing step S7; if the working mode is the dry mode, executing step S5; if the working mode is the wet mode, executing step S6;

[0062] S5, the dry coating mechanism performs dry coating treatment on the materials in the temporary storage bin, and transports the treated materials to the second sintering mechanism for secondary sintering treatment, and then executes step S7;

[0063] S6, the wet coating mechanism performs wet coating treatment on the material in the temporary storage bin, and transports the treated material to the second sintering mechanism for secondary sintering treatment, and then executes step S7;

[0064] S7. The packaging mechanism packages the materials.

[0065] As a preferred solution, in this embodiment, the step S1 further includes the following steps:

[0066] S0, set working mode;

[0067] The working modes include: normal mode, dry mode and wet mode.

[0068] For details, please refer to Figure 1-Figure 8 The present invention also provides a lithium battery positive electrode material automatic production system to cooperate with the automatic production method to work, comprising:

[0069] The batching mechanism 1 includes a plurality of feeding components, a high-mixing device 104 connected to the plurality of feeding components, and a mixing silo 105 connected to the high-mixing device 104;

[0070] The feeding assembly includes a batching vacuum feeding device 101, a raw material bin 102 connected to the batching vacuum feeding device 101, a weighing tank 103 connected to the raw material bin 102, and a batching spiral feeder 106 connected to the weighing tank 103;

[0071] The first sintering mechanism 2 comprises a first loading device connected to the mixing bin, a first sintering device and a first bin 211;

[0072] The crushing mechanism 3 includes a crushing vacuum feeding device 301 connected to the first material bin, a crusher 305 connected to the crushing vacuum feeding device 301, and a material temporary storage bin 307 connected to the crusher 305;

[0073] A dry coating mechanism 4 and a wet coating structure 5 respectively connected to the pulverizing mechanism;

[0074] and a second sintering mechanism 6 connected to the dry coating mechanism 4 and the wet coating mechanism 5 respectively;

[0075] a packaging mechanism 7 connected to the pulverizing mechanism 3 and the second sintering mechanism 6 respectively;

[0076] The connection is a sealed connection through a connecting pipe.

[0077] Wherein, the normal mode is that the raw materials are processed in sequence by the batching mechanism 1, the first sintering mechanism 2, the pulverizing mechanism 3 and the packaging mechanism 7 to produce the positive electrode material for lithium batteries;

[0078] The dry process mode is that the raw materials are processed in sequence by the batching mechanism 1, the first sintering mechanism 2, the pulverizing mechanism 3, the dry coating mechanism 4, the second sintering mechanism 6 and the packaging mechanism 7 to produce the positive electrode material for lithium batteries;

[0079] The wet process mode is that the raw materials are processed in sequence by the batching mechanism 1, the first sintering mechanism 2, the pulverizing mechanism 3, the wet coating mechanism 5, the second sintering mechanism 6 and the packaging mechanism 7 to produce lithium battery positive electrode materials.

[0080] The high mixing equipment 104 is a high-speed mixer or a ribbon mixer.

[0081] Specifically, the batching vacuum feeding device 101 receives raw materials through a feeding port 100, and is provided with a first weighing module. When the first weighing module measures that the raw materials entering the batching vacuum feeding device 101 are greater than or equal to a first predetermined mass, the batching vacuum feeding device 101 stops working, otherwise the batching vacuum feeding device 101 works normally; at the same time, the raw materials enter the raw material bin 102 through the batching vacuum feeding device 101, and the raw material bin 102 is provided with an air bowl, an air hammer, and a discharge butterfly valve. The air hammer is used to prevent the material from forming a bridge, and the discharge butterfly valve is connected to a weighing tank 103. The weighing tank 103 quantitatively conveys the material to the spiral discharger 106, and the spiral discharger 106 conveys the material to the high-mixing equipment 104. After being fully mixed by the high-mixing equipment 104, the material is conveyed to the mixing bin 105.

[0082] The feeding components can be two sets, three sets or more sets, depending on the type of raw materials.

[0083] In a further preferred embodiment, a rotating permanent magnetic iron remover is also installed between the unloading butterfly valve and the spiral unloader, and the weighing tank 103 has an agitator and a second weighing module. The agitator is used to ensure that the material in the weighing tank 103 is fluffy and not agglomerated. When the second weighing module measures that the weight of the material in the weighing tank 103 is greater than or equal to the second predetermined mass, the unloading butterfly valve and the rotating permanent magnetic iron remover stop working, otherwise the unloading butterfly valve and the rotating permanent magnetic iron remover work normally.

[0084] As a preferred solution, in this embodiment, the first sintering mechanism 2 includes a first loading device connected to the mixing bin 105, a first sintering device and a first bin 211;

[0085] In the first sintering mechanism 2, the first potting device includes a first sintering vacuum feeding device 201 connected to the mixing bin 105, a first potting bin 202 connected to the first sintering vacuum feeding device 201, and a first potting machine 203 connected to the first potting bin 202;

[0086] The first sintering device comprises a first outer circulation track 204 carrying a plurality of first saggers 213, a first flattening and punching device 205, a first sagger stacking machine 206, a first sintering kiln 207, a first sagger separating machine 208, a first material dumping machine 209 and a first outer circulation track sealing cover 210; the first outer circulation track 204 aligns the first saggers 213 with the sagger loading machine 203, and passes through the first flattening and punching device 205, the first sagger stacking machine 206, the first sintering kiln 207, the first sagger separating machine 208 and the first material dumping machine 209 in sequence;

[0087] The first material dumper 209 is connected to the first material bin 211;

[0088] The first outer circulation track sealing cover 210 seals the first sintering device.

[0089] Specifically, the first sagger 213 is used to hold the material conveyed by the first loader 203; the first flattening and punching device 204 is used to compact the material in the first sagger 213 and punch a plurality of small holes in the compacted material, similar to the shape of honeycomb coal; the first stacking machine 206 is used to stack two adjacent single first saggers 213 together; the first sintering kiln 209 is used to sinter the material in the first sagger 213 at high temperature; the first separator 208 is used to split the stacked first saggers 213 into two; the first dumper 209 is used to pour out the material in the first sagger 213.

[0090] The materials in the mixing bin 105 are transported to the first loading bin 202 by the first sintering vacuum feeding device 201 under the action of vacuum negative pressure, and the loading machine 203 evenly loads the materials in the first sagger 213. Driven by the first outer circulation track 204, the first sagger 213 passes through the first flattening and punching device 205, the first sagger stacking machine 206, the first sintering kiln 207, the first sagger dividing machine 208 and the first dumping machine 209 in sequence; the materials in the first sagger 213 have a certain hardness after being sintered by the first sintering kiln 207, and the first dumping machine 209 has a first coarse crusher 212. After the action of the first coarse crusher 212, the materials are sent to the first bin 211 for temporary storage.

[0091] As a preferred solution, in this embodiment, the crushing mechanism 3 includes a crushing vacuum feeding device 301 connected to the first material bin 211, a crusher 305 connected to the crushing vacuum feeding device 301, and a material temporary storage bin 307 connected to the crusher; the crusher 305 is a mechanical crusher or a jet crusher;

[0092] In the pulverizing mechanism 3, a pulverizing bin 302 connected to the pulverizing vacuum feeding device and a pulverizing vibration screen 304 connected to the pulverizing bin 302 are further included between the pulverizing vacuum feeding device 301 and the pulverizer 305, and the pulverizing vibration screen 304 is connected to the pulverizer 305;

[0093] The pulverizer 305 is connected to the material temporary storage bin 307 via a cyclone separator 306;

[0094] The pulverizer 305 is also connected to the dust collection bin 308 via a circulating fan (not shown);

[0095] The fine dust collection bin 308 is also connected to the cyclone separator 306 .

[0096] As a preferred solution, in this embodiment, the packaging mechanism 7 also includes a packaging vacuum loading device 701 connected to the material temporary storage bin 307, a batch mixer 703 connected to the packaging vacuum loading device 701, a packaging vibration screen 705 connected to the batch mixer 703, a packaging material silo 707 connected to the packaging vibration screen 705, and a packaging machine 708 connected to the packaging material silo 707.

[0097] Specifically, the materials in the first bin 211 are transported to the crushing bin 302 to wait for crushing under the vacuum negative pressure of the crushing vacuum feeding device 301; there is also a crushing rotating permanent magnetic iron remover 303 between the crushing bin 302 and the crushing vibration screen 304. After filtering out the magnetic substances, sagger slag and large-sized materials in the materials, the materials are crushed by the crusher 305 and sent to the cyclone separator 306 for cyclone separation into normal-sized materials and micro-powders. The normal-sized materials are stored in the material temporary storage bin 307, and the micro-powders are collected in the dust collection bin 308. Of course, during the normal operation of the crusher 305, micro-dust will also be generated, and it is necessary to use the circulating fan to send the micro-dust generated at this time into the micro-dust collection bin 308 for collection.

[0098] The materials in the temporary storage bin will pass through the packaging vacuum feeding device 701, enter the batch mixer 703, and enter the packaging machine 708 for packaging through the packaging vibrating screen 705 and the packaging bin 707. Preferably, the packaging bin 707 is also equipped with a packaging permanent magnetic iron remover 706 to further eliminate magnetic impurities in the materials.

[0099] As a preferred embodiment, in this embodiment, the dry coating mechanism 4 includes a dry vacuum feeding device 401 connected to the material temporary storage bin 307, a dry material bin 402 connected to the dry vacuum feeding device 401, a dry weighing tank 403 connected to the dry material bin 402, a dry spiral feeder 404 connected to the dry weighing tank 403, a dry high mixing equipment 405 connected to the dry spiral feeder 404, and a dry mixing bin 406 connected to the dry high mixing equipment 405.

[0100] Specifically, in the process of the dry mode, in the normal mode, step S4 specifically further includes:

[0101] The dry process vacuum feeding device 401 transports the material in the material temporary storage bin 307 to the dry process silo 402 through the vacuum negative pressure. The dry process vacuum feeding device 401 is provided with a dry process weighing module. When the dry process weighing module measures that the material entering the dry process vacuum feeding device 401 is greater than or equal to the predetermined dry process mass, the dry process vacuum feeding device 401 stops working, otherwise the dry process vacuum feeding device 401 works normally. The dry process silo 402 has the same technical features as the raw material silo 102, and the unloading butterfly valve is connected to the dry process weighing tank. 403 is connected, the dry weighing tank 403 quantitatively conveys the material to the spiral feeder 404, the dry spiral feeder 404 conveys the material in the dry weighing tank 403 to the dry high mixing equipment 405, the dry high mixing equipment 405 has an auxiliary material port (not marked), a certain amount of coating agent is added at the auxiliary material port, after being fully mixed by the dry high mixing equipment 405, the coated material is conveyed to the dry mixing silo 406, and then enters the second sintering mechanism 6 for secondary sintering treatment, and then conveyed to the packaging mechanism 7 for packaging.

[0102] As a preferred embodiment, in this embodiment, the wet coating mechanism 5 includes a wet vacuum feeding device 501 connected to the material temporary storage bin 307, a wet temporary storage bin 502 connected to the wet vacuum feeding device 501, a wet weighing tank 503 connected to the wet temporary storage bin 502, a wet spiral feeder 504 connected to the wet weighing tank 503, a coating tank 505 connected to the wet spiral feeder 504, a filter press 506 connected to the coating tank 505 through a feeding pump (not marked), a dryer 507 connected to the filter press, and a wet silo 508 connected to the dryer 507; the filter press is a plate filter press, a frame filter press or a centrifugal filter; the dryer is a handle dryer, a microwave dryer or a belt dryer;

[0103] The coating tank is equipped with a water making machine 510 and a coating agent tank 509;

[0104] The dryer is equipped with an exhaust fan (not shown).

[0105] Specifically, in the process of the wet mode, step S4 specifically further includes:

[0106] The wet process vacuum feeding device 501 transports the material in the material temporary storage bin 307 to the wet process temporary storage bin 502 through the vacuum negative pressure. The wet process temporary storage bin 502 is provided with a wet process weighing module. When the wet process weighing module measures that the material entering the wet process vacuum feeding device is greater than or equal to the wet process predetermined mass, the wet process vacuum feeding device 501 stops working, otherwise the wet process vacuum feeding device 501 works normally; the wet process weighing tank 503 receives the material in the wet process temporary storage bin 502, and when the set weight is reached, the material is discharged through the wet process spiral feeder 504. 04 is put into the coating tank 505, water and coating agent are added into the coating tank 505 through the water making machine 510 and the coating agent tank 510, after being fully mixed and coated, they are transported to the filter press 506 through the feeding pump to remove most of the moisture, and then the dryer 507 is used for drying and dehydration, and the exhaust fan removes the water vapor of the dryer 507 to facilitate rapid drying, and after the wet coated material is dehydrated, it is put into the wet silo 508, and then enters the second sintering mechanism 6 for secondary sintering treatment, and then transported to the packaging mechanism 7 for packaging.

[0107] The second sintering mechanism 6 includes a second potting device, a second sintering device and a second silo 611;

[0108] The second potting device comprises a second sintering vacuum feeding device 601, a second potting material bin 602 connected to the second sintering vacuum feeding device 601, and a second potting machine 603 connected to the second potting material bin 602;

[0109] The second sintering device comprises a second outer circulation track 604 carrying a plurality of second saggers 613, a second flattening and punching device 605, a second sagger stacking machine 606, a second sintering kiln 607, a second sagger dividing machine 608, a second material dumping machine 609 and a second outer circulation track sealing cover 610; the second outer circulation track 604 aligns the second saggers 613 with the sagger loading machine 603, and passes through the second flattening and punching device 605, the second sagger stacking machine 606, the second sintering kiln 607, the second sagger dividing machine 608 and the second material dumping machine 609 in sequence;

[0110] The second material dumper 609 is connected to the second material bin 611;

[0111] The second outer circulation track sealing cover 610 seals the second sintering device.

[0112] The secondary sintering process of the second sintering mechanism 6 is the same as the operating mechanism of the first sintering mechanism 2, and will not be described in detail here.

[0113] The present invention adopts an intelligent production line to produce lithium battery positive electrode materials, and the whole process is closed, which can avoid the overflow of dust and the introduction of foreign matter such as metal, effectively improve production efficiency and reduce material production costs.

[0114] The high-mix equipment and the dry high-mix equipment can be high-mixers of the same specifications, with the inner lining being a tungsten carbide coating; or they can be the same ribbon mixers, with the inner lining being a tungsten carbide coating or PTFE (Poly tetra fluoroethylene ptfe).

[0115] The raw material silo, the mixing silo, the silo, the first loading silo, the first silo, the crushing silo, the packaging silo, the dry process silo, the dry process mixing silo, the wet process temporary storage silo, the wet process silo, the second loading silo, and the second silo are all lined with tungsten carbide coating or PTFE.

[0116] The first / second sintering furnace is a push plate sintering furnace, an open roller sintering furnace or a closed roller sintering furnace.

[0117] The first / second outer circulation track sealing cover adopts a sealed structure, and the connecting bracket between the first / second outer circulation track is made of aluminum alloy. The first / second outer circulation track sealing cover is a high-temperature resistant tempered glass or organic glass plate or a transparent PP (polypropylene) plate to ensure that the material is handled in a closed environment to prevent material dust from flying and overflowing, polluting the environment, and harming the health of production line personnel.

[0118] In the automatic production system of lithium battery positive electrode materials provided by the present invention, unless otherwise specified, the connection involved is a sealed connection through the connecting pipe (not marked). The connecting pipe is a stainless steel pipe lined with ceramic, tungsten carbide coating, PTFE or glass, and has a protective layer outside the pipe.

[0119] As a preferred solution, in this embodiment, it further includes a setting device and a controller connected to the setting device;

[0120] The setting device is used to set the working mode of the system;

[0121] The control is also used to drive the batching mechanism, the first sintering mechanism, the pulverizing mechanism, the dry coating mechanism, the wet coating mechanism, the second sintering mechanism and the packaging mechanism to work normally according to the signal of the setting device to realize automatic production.

[0122] There are control valves at the connection between each mechanism, which are used to control the closing and conduction between the mechanisms; there are also corresponding control valves between each device in each mechanism. The control valves include air supply valves, material discharge butterfly valves, star-shaped dischargers, butterfly valves, and material feed butterfly valves.

[0123] Example 2

[0124] The present invention also provides an automatic production line for lithium battery positive electrode materials, which operates using the automatic production system for lithium battery positive electrode materials.

[0125] The intelligent lithium battery positive electrode material production line has a high degree of automation, less pollution, and is environmentally friendly. It can effectively reduce labor intensity and improve production efficiency. It ensures that materials are operated in a closed environment, prevents material dust from flying and overflowing, polluting the environment, and harming the health of production line personnel. It is a great progress in this field.

[0126] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the claims attached to the present invention.

Claims

1. An automatic production system for lithium battery positive electrode materials, characterized in that: include: The batching mechanism includes a plurality of feeding components, a high-mixing device connected to the plurality of feeding components, and a mixing silo connected to the high-mixing device; The feeding assembly includes a batching vacuum feeding device, a raw material silo connected to the batching vacuum feeding device, a weighing tank connected to the raw material silo, and a batching spiral feeder connected to the weighing tank; A first sintering mechanism comprises a first loading device connected to the mixing bin, a first sintering device and a first bin; The pulverizing mechanism comprises a pulverizing vacuum feeding device connected to the first silo, a pulverizer connected to the pulverizing vacuum feeding device, and a material temporary storage bin connected to the pulverizer; A dry coating mechanism and a wet coating mechanism respectively connected to the pulverizing mechanism; and a second sintering mechanism connected to the dry coating mechanism and the wet coating mechanism respectively; A packaging mechanism connected to the pulverizing mechanism and the second sintering mechanism respectively; The connection is a sealed connection through a connecting pipe; The packaging mechanism includes a packaging vacuum feeding device connected to the material temporary storage bin; the dry coating mechanism includes a dry vacuum feeding device connected to the material temporary storage bin; the wet coating mechanism includes a wet vacuum feeding device connected to the material temporary storage bin.

2. The automatic production system of lithium battery positive electrode materials according to claim 1, characterized in that: In the first sintering mechanism, the first potting device includes a first sintering vacuum feeding device connected to the mixing bin, a first potting bin connected to the first sintering vacuum feeding device, and a first potting machine connected to the first potting bin; The first sintering device comprises a first outer circulation track carrying a plurality of saggers, a first flattening and punching device, a first bowl stacking machine, a first sintering kiln, a first bowl separator, a first material dumper and a first outer circulation track sealing cover; the first outer circulation track aligns the saggers with the bowl loading machine and passes through the first flattening and punching device, the first bowl stacking machine, the first sintering kiln, the first bowl separator and the first material dumper in sequence; The first material dumper is connected to the first material bin; The first outer circulation track sealing cover seals the first sintering device.

3. The automatic production system of lithium battery positive electrode materials according to claim 1, characterized in that: In the pulverizing mechanism, a pulverizing bin connected to the pulverizing vacuum feeding device and a pulverizing vibration screen connected to the pulverizing bin are further included between the pulverizing vacuum feeding device and the pulverizer, and the pulverizing vibration screen is connected to the pulverizer; The pulverizer is connected to the material temporary storage bin via a cyclone separator; The pulverizer is also connected to the dust collection bin via a circulating fan; The fine dust collection bin is also connected to the cyclone separator.

4. The automatic production system of lithium battery positive electrode materials according to claim 1, characterized in that: The packaging mechanism also includes a batch mixer connected to the packaging vacuum feeding device, a packaging vibration screen connected to the batch mixer, a packaging silo connected to the packaging vibration screen, and a packaging machine connected to the packaging silo.

5. The automatic production system of lithium battery positive electrode materials according to claim 1, characterized in that: The dry coating mechanism also includes a dry silo connected to the dry vacuum feeding device, a dry weighing tank connected to the dry silo, a dry screw feeder connected to the dry weighing tank, a dry high-mixing device connected to the dry screw feeder, and a dry mixing silo connected to the dry high-mixing device.

6. The automatic production system of lithium battery positive electrode materials according to claim 1, characterized in that: The wet coating mechanism also includes a wet temporary storage bin connected to the wet vacuum feeding device, a wet weighing tank connected to the wet temporary storage bin, a wet spiral feeder connected to the wet weighing tank, a coating tank connected to the wet spiral feeder, a filter press connected to the coating tank via a feeding pump, a dryer connected to the filter press, and a wet bin connected to the dryer; The coating tank is equipped with a water making machine and a coating agent tank; The dryer is equipped with an exhaust fan.

7. The automatic production system of lithium battery positive electrode materials according to claim 1, characterized in that: The second sintering mechanism includes a second potting device, a second sintering device and a second silo; The second potting device comprises a second sintering vacuum feeding device, a second potting silo connected to the second sintering vacuum feeding device, and a second potting machine connected to the second potting silo; The second sintering device comprises a second outer circulation track carrying a plurality of saggers, a second flattening and punching device, a second sagger stacking machine, a second sintering kiln, a second sagger dividing machine, a second material dumping machine, and a second outer circulation track sealing cover; the second outer circulation track aligns the saggers with the sagger loading machine, and passes through the second flattening and punching device, the second sagger stacking machine, the second sintering kiln, the second sagger dividing machine, and the second material dumping machine in sequence; The second material dumper is connected to the second material bin; The second outer circulation track sealing cover seals the second sintering device.

8. The automatic production system of lithium battery positive electrode materials according to claim 5, characterized in that: The high mixing equipment is a high-speed mixer or a ribbon mixer; The dry high mixing equipment is a high-speed mixer or a ribbon mixer.

9. A method for automatically producing positive electrode materials for lithium batteries, characterized in that: Includes steps: S1. Adjust the response parameters of the batching mechanism, and fully mix several raw materials of the lithium battery positive electrode material by high-speed stirring; S2, the first loading device transports the mixed raw materials to the first sintering mechanism for a sintering process; S3, the crushing mechanism crushes the primary sintered material and transports the crushed material to the temporary material storage bin; S4, reading the current system working mode information, if the working mode is the normal mode, executing step S7; if the working mode is the dry mode, executing step S5; if the working mode is the wet mode, executing step S6; S5, the dry coating mechanism performs dry coating treatment on the materials in the temporary storage bin, and transports the treated materials to the second sintering mechanism for secondary sintering treatment, and then executes step S7; S6, the wet coating mechanism performs wet coating treatment on the material in the temporary storage bin, and transports the treated material to the second sintering mechanism for secondary sintering treatment, and then executes step S7; S7. The packaging mechanism packages the materials.

10. The automatic production method of lithium battery positive electrode material according to claim 9, characterized in that: In the step S1, the response parameter includes the weight of each raw material loaded each time.

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