Preparation device for magnetic conductive coating slurry of lithium battery
By using a bidirectional rotating mixing paddle and stirring paddle design, combined with heating wire heating, the problem of uneven mixing of raw materials in the preparation of magnetic conductive coating slurry for lithium batteries is solved, achieving more efficient mixing and uniformity, and improving the quality of the coating.
Patent Information
- Application Number
- CN202423125634.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-18
AI Technical Summary
In existing lithium battery magnetic conductive coating slurry preparation devices, the raw materials are not mixed evenly in the reaction vessel, which leads to the problem of impeded stirring and flow.
The design employs a bidirectional rotating mixing paddle and stirring paddle, combined with heating wire, to ensure uniform mixing of raw materials, and improves slurry flowability and heat exchange efficiency through a porous structure.
It improves the uniformity of raw material mixing, reduces flow resistance, ensures the uniformity and stability of the slurry, avoids particle agglomeration and sedimentation, and improves the quality of the coating.
Smart Images
Figure CN223669194U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to lithium battery manufacturing equipment technical field especially relates to a kind of lithium battery magnetic conductive coating slurry preparation device. BACKGROUND
[0002] Lithium battery has high energy density, lightweight and other characteristics, suitable for electric vehicle, portable electronic product and other fields of application, and lithium battery positive and negative electrode material contains a certain amount of magnetic material, such as iron oxide, cobalt oxide and the like, and magnetic material has a very important influence on the performance of battery, which can improve the magnetic permeability and magnetization degree of battery, thereby improving the energy density, charge-discharge efficiency and cycle life of battery, therefore, lithium battery needs magnetic conductive coating slurry to improve material dispersity and coating uniformity, thereby improving the performance and quality of battery.
[0003] At present, preparation device includes reaction kettle, magnetic field generator, filter, boiler and vacuum drying box, and its principle is that raw materials are mixed and stirred by reaction kettle, magnetic material is uniformly dispersed in coating by magnetic field generator to improve the uniformity and conductivity of coating, impurities and unreacted substances in raw materials after reaction preparation are removed by filter to improve the purity and uniformity of coating slurry, and water or solvent in raw materials is removed by boiler to improve the stability and electrochemical performance of raw materials, and finally the stability and electrochemical performance of product are improved by vacuum drying box.
[0004] At present, reaction kettle is usually driven by a rotating shaft to rotate a plurality of stirring paddles in the same direction to achieve stirring effect, but in actual operation, some positive and negative electrode materials in raw materials are composed of cobalt, nickel, manganese, iron and other metal oxides and carbon negative electrode, and these raw materials have certain adhesion, surface tension and other characteristics, which can easily hinder the fluid flow driven by stirring in reaction kettle, thereby causing uneven mixing phenomenon. SUMMARY
[0005] In order to overcome the defects of the prior art pointed out above, the present inventors have made in-depth research, and after a lot of creative labor, the present utility model is completed.
[0006] Specifically, the technical problem to be solved by the present utility model is to provide a lithium battery magnetic conductive coating slurry preparation device to solve the technical problem that the raw materials are easy to hinder the fluid flow driven by stirring in the reaction kettle 1, thereby causing uneven mixing phenomenon.
[0007] To solve the above technical problems, the utility model provides the following technical scheme:
[0008] The utility model provides a kind of lithium battery magnetic conductive coating slurry preparation device, including reaction kettle, leg fixed in the outer surface of reaction kettle, installation in the bottom of reaction kettle discharge pipe, located in the bottom of reaction kettle magnetic field generator, the top of the reaction kettle is fixedly connected with motor, the inside rotation of the reaction kettle is connected with fixed ring, the inside rotation of the fixed ring is connected with rotating shaft, the top of the rotating shaft penetrates fixed ring, and extends to the top of reaction kettle and the output end of motor is fixedly connected, the outer surface of the rotating shaft is fixedly connected with lower tooth disc, the bottom of the fixed ring is fixedly connected with upper tooth disc, gear is equipped between the upper tooth disc and lower tooth disc, the gear is equipped with two groups, and it is corresponding with each other, the upper tooth disc, gear and lower tooth disc are engaged with each other.
[0009] As an improved technical solution, the bottom of the fixed ring is fixedly connected with a limiting shell, the limiting shell is located outside the upper tooth disc, the lower tooth disc is located inside the limiting shell and is movably connected thereto, one end of the rotating shaft extends to the bottom of the limiting shell and is movably connected thereto, and the gear is located inside the limiting shell and is rotatably connected thereto.
[0010] As an improved technical solution, the outer surface of the rotating shaft is fixedly connected with a mixing paddle, the mixing paddles are arranged in an annular array, the mixing paddles are provided in two groups and correspond to each other, the mixing paddles are located at the bottom of the limiting shell, the mixing paddle comprises a mounting portion fixed to the outer surface of the rotating shaft, one end of the mounting portion away from the rotating shaft is fixedly connected with a bearing rod, the surface of the bearing rod is fixedly connected with an electric heating wire, the electric heating wire is arranged in an annular array, the surface of the electric heating wire is provided with a shell, and one end of the shell is connected with the mounting portion.
[0011] As an improved technical solution, the bottom of the fixed ring is fixedly connected with a rotating rod, the rotating rods are arranged in an annular array, the inside of the rotating rod is fixedly connected with a stirring paddle, the stirring paddle is located between the two groups of mixing paddles, the stirring paddle is in the form of an inclined plate, and holes are formed in the surface of the stirring paddle.
[0012] As an improved technical solution, the bottom of the rotating rod is fixedly connected with a bottom rod and an inclined rod, the inclined rod is located at the top of the bottom rod, and the end of the inclined rod away from the rotating rod is fixedly connected with a base.
[0013] As an improved technical solution, the three groups of inclined rods are connected through the base, and the bottom of the rotating shaft is located inside the base and is rotatably connected thereto.
[0014] As an improved technical solution, the outer side of the rotating rod is fixedly connected with a scraper, the scraper is in the form of a triangle, and the end of the scraper away from the rotating rod is in contact with the inner wall of the reaction kettle.
[0015] After the above technical scheme is adopted, the utility model has the following beneficial effects:
[0016] 1、The utility model discloses, can make mixed paddle and stirring paddle reach the purpose of bidirectional rotation, and further can improve the uniformity of raw material mixing, can reduce the fluid flow that raw material is driven in the reaction kettle simultaneously to stirring and produce the hindrance.
[0017] 2、The utility model discloses, can pass through the electric heating wire and can heat through the electric current, improve the slurry temperature to the set working temperature range, further guarantee the stirring effect and uniformity, and can make each component in raw material better dispersion and mixing, thereby reduce the agglomeration phenomenon in slurry, promote the uniformity and quality of coating
[0018] 3、The utility model discloses, can avoid the agglomeration or precipitation of particle, improve the dispersibility and stability of slurry, can also improve the heat exchange efficiency between slurry and stirring paddle to promote heat transfer. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment description, and obviously, the drawing in the following description is only some embodiments of the utility model, and for the ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings. Wherein:
[0020] Fig. 1 It is the whole structure schematic diagram of the lithium battery magnetic conductive coating slurry preparation device of the utility model.
[0021] Fig. 2 It is the sectional structure schematic diagram of the lithium battery magnetic conductive coating slurry preparation device of the utility model.
[0022] Fig. 3 It is the limiting shell and pivot relevant structure schematic diagram of the lithium battery magnetic conductive coating slurry preparation device of the utility model.
[0023] Fig. 4 It is the fixed ring and pivot relevant explosion structure schematic diagram of the lithium battery magnetic conductive coating slurry preparation device of the utility model.
[0024] Fig. 5 It is the mixed paddle structure schematic diagram of the lithium battery magnetic conductive coating slurry preparation device of the utility model.
[0025] BRIEF DESCRIPTION OF DRAWINGS
[0026] 1, reactor; 2, leg; 3, discharge pipe; 4, magnetic field generator; 5, motor; 6, rotating shaft; 7, lower tooth disc; 8, gear; 9, upper tooth disc; 10, fixed ring; 1001, limiting shell; 11, mixing paddle; 1101, mounting portion; 1102, bearing rod; 1103, heating wire; 1104, shell; 12, rotating rod; 13, stirring paddle; 1301, hole; 14, bottom rod; 15, inclined rod; 16, base; 17, scraper. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0028] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.
[0029] Meanwhile, "and / or" or "and / or" appearing throughout the text means that three solutions are included, taking "A and / or B" as an example, including A solution, or B solution, or A and B solutions are satisfied at the same time.
[0030] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.
[0031] For example, the first and second features can be combined to form a third feature, and the third feature can be combined with the first feature to form a fourth feature. Figs. 1 to 5As shown in the embodiment, the lithium battery magnetic conductive coating slurry preparation device comprises a reaction kettle 1, a supporting leg 2 fixed on the outer surface of the reaction kettle 1, a discharge pipe 3 installed at the bottom of the reaction kettle 1, a magnetic field generator 4 located at the bottom of the reaction kettle 1, the magnetic field generator 4 is located at the bottom of the discharge pipe 3, the discharge pipe 3 is opened and closed through an electromagnetic valve, a feeding port is installed at the top of the reaction kettle 1, a motor 5 is fixedly connected to the top of the reaction kettle 1, a fixed ring 10 is rotatably connected to the inner side of the reaction kettle 1, a rotating shaft 6 is rotatably connected to the inner side of the fixed ring 10, the top of the rotating shaft 6 penetrates through the fixed ring 10 and extends to the top of the reaction kettle 1 and is fixedly connected to the output end of the motor 5.
[0032] A lower tooth disc 7 is fixedly connected to the outer surface of the rotating shaft 6, an upper tooth disc 9 is fixedly connected to the bottom of the fixed ring 10, and a gear 8 is arranged between the upper tooth disc 9 and the lower tooth disc 7, the gear 8 is provided in two groups and corresponds to each other, the upper tooth disc 9, the gear 8 and the lower tooth disc 7 are meshed with each other, the rotating directions of the upper tooth disc 9 and the lower tooth disc 7 are opposite, the mixed paddle 11 and the stirring paddle 13 are driven to rotate in two directions, so that the purpose of bidirectional stirring is achieved, and the mixing efficiency is improved.
[0033] A limiting shell 1001 is fixedly connected to the bottom of the fixed ring 10, the limiting shell 1001 is located outside the upper tooth disc 9, the lower tooth disc 7 is located inside the limiting shell 1001 and movably connected thereto, one end of the rotating shaft 6 extends to the bottom of the limiting shell 1001 and movably connected thereto, the gear 8 is located inside the limiting shell 1001 and rotatably connected thereto, the limiting shell 1001 can limit and support the two gears 8, so that the two gears 8 will not deviate, and the limiting shell 1001 does not contact the upper tooth disc 9.
[0034] A mixed paddle 11 is fixedly connected to the outer surface of the rotating shaft 6, the mixed paddles 11 are arranged in an annular array, the mixed paddles 11 are provided in two groups and correspond to each other, and the mixed paddles 11 are located at the bottom of the limiting shell 1001.
[0035] The mixed paddle 11 comprises a mounting portion 1101 fixed to the outer surface of the rotating shaft 6, a bearing rod 1102 fixedly connected to one end of the mounting portion 1101 away from the rotating shaft 6, an electric heating wire 1103 fixedly connected to the surface of the bearing rod 1102, the electric heating wire 1103 is arranged in an annular array, a shell 1104 is arranged on the surface of the electric heating wire 1103, one end of the shell 1104 is connected to the mounting portion 1101, the mixed paddle 11 can preliminarily mix raw materials, the electric heating wire 1103 is connected to an external device through an electric signal, the setting of the electric heating wire 1103 can realize the effect of constant temperature heating, ensure the uniformity of the temperature of the reaction system, improve the reaction efficiency, and realize temperature control through the electric heating wire 1103, so that the reaction system can maintain a certain temperature precision and stability, thereby obtaining a lithium battery magnetic conductive coating slurry with higher quality.
[0036] The bottom of the fixed ring 10 is fixedly connected with the rotating rods 12, the rotating rods 12 are arranged in an annular array, the inner side of the rotating rods 12 is fixedly connected with the stirring paddles 13, the stirring paddles 13 are located between the two groups of mixing paddles 11, the stirring paddles 13 are in the form of inclined plates, the surface of the stirring paddles 13 is provided with the holes 1301, the holes 1301 are arranged at equal intervals, the inclined stirring paddles 13 are helpful to change the flow direction and speed of the slurry in the stirring process, so that the slurry is more uniformly distributed in the reaction kettle 1, the stirring efficiency of the raw materials can be improved, the uniform dispersion of the solid particles and the liquid in the slurry is accelerated, the holes 1301 can guide the slurry flow to form stronger turbulence, which is helpful to achieve better mixing of the raw materials during stirring, the holes 1301 increase the contact area between the stirring paddles 13 and the slurry, promote the uniform distribution of each component in the slurry, prevent the phenomenon of sedimentation or aggregation of particles in the slurry, and at the same time, the stirring paddles 13 and the mixing paddles 11 rotate in opposite directions, so that the mixing of the raw materials is more uniform, and the raw materials can avoid hindering the fluid flow driven by stirring.
[0037] The bottom of the rotating rod 12 is fixedly connected with the bottom rod 14 and the inclined rod 15, the inclined rod 15 is located at the top of the bottom rod 14, the end of the inclined rod 15 away from the rotating rod 12 is fixedly connected with the base 16, the inclined rod 15 can provide support for the three groups of rotating rods 12 and ensure that they do not deviate.
[0038] The three groups of inclined rods 15 are connected through the base 16, the bottom of the rotating shaft 6 is located inside the base 16 and is rotatably connected therewith, which can provide support for the rotating shaft 6 and ensure its stability during rotation, and at the same time, the stability of the rotating rod 12 can be ensured, and the bottom rod 14 can prevent the raw materials from accumulating at the bottom of the reaction kettle 1, thereby increasing the uniformity of the mixing of the raw materials.
[0039] The outer side of the rotating rod 12 is fixedly connected with the scraper 17, the scraper 17 is in the form of a triangle, the end of the scraper 17 away from the rotating rod 12 is in contact with the inner wall of the reaction kettle 1, which can prevent the raw materials from remaining on the inner wall of the reaction kettle 1, thereby increasing the stability during mixing and improving the utilization rate of the raw materials.
[0040] In use, the raw materials are put into the reaction kettle 1 through the feed inlet, then the motor 5 is started to drive the rotating shaft 6 to rotate, the rotating shaft 6 drives the lower gear plate 7 to rotate during rotation, the lower gear plate 7 drives the upper gear plate 9 to rotate through the two groups of gears 8, so that the upper gear plate 9 and the lower gear plate 7 rotate in opposite directions, at the same time, the lower gear plate 7 drives the mixing paddles 11 to rotate through the rotating shaft 6, the upper gear plate 9 drives the fixed ring 10 to rotate in the opposite direction of the mixing paddles 11, thereby achieving the purpose of bidirectional rotation, thereby improving the uniformity of the mixing of the raw materials, and reducing the hindering of the raw materials to the fluid flow driven by stirring in the reaction kettle 1;
[0041] At the same time, the mixing paddle 11 can be heated by the electric heating wire 1103 through the current during rotation, so as to increase the temperature of the slurry to the set working temperature range. Many coatings and slurries need to be kept at a certain temperature during preparation to ensure that their rheological properties and viscosities are within the ideal range, thereby ensuring the stirring effect and uniformity, and enabling the various components in the raw materials to be better dispersed and mixed, thereby reducing the agglomeration in the slurry and improving the uniformity and quality of the coating.
[0042] In addition, by arranging the stirring paddle 13 and the hole 1301, the surface area of the stirring paddle 13 in contact with the slurry can be increased, thereby improving the shearing action of the stirring paddle 13 on the slurry and promoting the uniform dispersion of the slurry. In particular, in the slurry containing solid particles (such as magnetic materials, conductive fillers, etc.), the hole 1301 can effectively avoid the agglomeration or precipitation of the particles, improve the dispersibility and stability of the slurry, and also improve the heat exchange efficiency between the slurry and the stirring paddle 13 to facilitate heat transfer.
[0043] It should be understood that the use of these embodiments is only for the purpose of illustrating the present application and is not intended to limit the scope of protection of the present application. In addition, it should also be understood that after reading the technical content of the present application, those skilled in the art can make various modifications, modifications and / or variations to the present application, and all these equivalent forms also fall within the protection scope defined by the claims attached hereto.
Claims
1. A kind of lithium battery magnetic conductive coating slurry preparation device, including reaction kettle (1), the support leg (2) of fixed in the outer surface of reaction kettle (1), the discharge pipe (3) of installation in the bottom of reaction kettle (1), the magnetic field generator (4) in the bottom of reaction kettle (1), it is characterized by: The top of the reactor (1) is fixedly connected with a motor (5), the inner side of the reactor (1) is rotatably connected with a fixed ring (10), the inner side of the fixed ring (10) is rotatably connected with a rotating shaft (6), the top of the rotating shaft (6) penetrates through the fixed ring (10) and extends to the top of the reactor (1) and is fixedly connected with the output end of the motor (5); The outer surface of the rotating shaft (6) is fixedly connected with a lower tooth disc (7), the bottom of the fixed ring (10) is fixedly connected with an upper tooth disc (9), the upper tooth disc (9) and the lower tooth disc (7) are provided with gears (8) therebetween, the gears (8) are provided in two groups and correspond to each other, and the upper tooth disc (9), the gears (8) and the lower tooth disc (7) are meshed with each other.
2. The device for preparing a slurry of a magnetic conductive coating for lithium batteries according to claim 1, characterized in that: The bottom of the fixed ring (10) is fixedly connected with a limiting shell (1001), the limiting shell (1001) is located outside the upper tooth disc (9), the lower tooth disc (7) is located inside the limiting shell (1001) and movably connected therewith, one end of the rotating shaft (6) extends to the bottom of the limiting shell (1001) and movably connected therewith, and the gears (8) are located inside the limiting shell (1001) and rotatably connected therewith.
3. The device for preparing a slurry of a magnetic conductive coating for lithium batteries according to claim 2, characterized in that: The outer surface of the rotating shaft (6) is fixedly connected with mixing paddles (11), the mixing paddles (11) are arranged in an annular array, the mixing paddles (11) are provided in two groups and correspond to each other, and the mixing paddles (11) are located at the bottom of the limiting shell (1001); The mixing paddles (11) comprise mounting portions (1101) fixed to the outer surface of the rotating shaft (6), one end of the mounting portion (1101) away from the rotating shaft (6) is fixedly connected with a bearing rod (1102), the surface of the bearing rod (1102) is fixedly connected with an electric heating wire (1103), the electric heating wire (1103) is arranged in an annular array, and the surface of the electric heating wire (1103) is provided with a shell (1104), one end of the shell (1104) is connected with the mounting portion (1101).
4. The device for preparing a slurry of a magnetic conductive coating for lithium batteries according to claim 3, characterized in that: The bottom of the fixed ring (10) is fixedly connected with a rotating rod (12), the rotating rod (12) is arranged in an annular array, the inner side of the rotating rod (12) is fixedly connected with stirring paddles (13), the stirring paddles (13) are located between the two groups of mixing paddles (11), the stirring paddles (13) are in the form of inclined plate structures, and the surface of the stirring paddles (13) is provided with holes (1301) arranged at equal intervals.
5. The device for preparing a magnetic conductive coating slurry for lithium batteries according to claim 4, characterized in that: The bottom of the rotating rod (12) is fixedly connected with a bottom rod (14) and an inclined rod (15), the inclined rod (15) is located at the top of the bottom rod (14), and one end of the inclined rod (15) away from the rotating rod (12) is fixedly connected with a base (16).
6. The device for preparing a slurry of a magnetic conductive coating for lithium batteries according to claim 5, characterized in that: The three groups of inclined rods (15) are connected through the base (16), the bottom of the rotating shaft (6) is located inside the base (16) and rotatably connected therewith.
7. The device for preparing a magnetic conductive coating slurry for lithium batteries according to claim 6, characterized in that: The outer side of the rotating rod (12) is fixedly connected with a scraper (17), the scraper (17) is in the form of a triangular structure, and one end of the scraper (17) away from the rotating rod (12) is in contact with the inner wall of the reactor (1).