Blanking device for battery powder and battery preparation system

Abstract

The embodiment of the utility model provides a battery powder blanking device and a battery preparation system. The blanking device for the battery powder comprises a blanking bin and a blanking device, wherein the blanking bin comprises a feeding end and a discharging end; the screen is arranged at the discharging end; and the rotating assembly comprises a rotating body, the rotating body is constructed to be a cone, the rotating body is arranged in the blanking bin and located on the upstream portion of the screen, and the rotating body is configured to rotate so as to scatter powder introduced from the feeding end. The rotating body is located above the screen, battery powder enters the blanking bin from the feeding end of the blanking bin, the powder is scattered under the rotation of the rotating body, the scattered powder passes through the screen and is discharged from the discharging end, due to the diversity of the battery powder, the problem of caking of the battery powder exists, large-size battery powder blocks are scattered through the rotation of the rotating body, and the battery powder blocks are discharged from the discharging end of the blanking bin. The problem that equipment is blocked due to the fact that the size of the battery powder is too large and the battery powder is accumulated and blocked at the screen in the blanking process is solved, the blanking speed of the battery powder is increased, and the production efficiency of batteries is improved.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery powder dropping device and a battery preparation system. Background Art

[0002] In some related technologies, during the manufacturing process of battery pole pieces, the powder is first sent to a mixer through a feeding device, and the powder is mixed with a solvent in the mixer to form a slurry, which is then sent to a coating machine for coating on the pole piece. Due to the diversity of powders, there is a problem of clogging of the feeding device, which affects the delivery time of the slurry and reduces the production efficiency of the battery. Utility Model Content

[0003] Some embodiments of the present application provide a battery powder dropping device and a battery preparation system to alleviate the problem of material blockage.

[0004] Some embodiments of the present application also provide a battery powder dropping device, comprising: a dropping bin, comprising a feed end and a discharge end; a screen, arranged at the discharge end; and a rotating assembly, comprising a rotating body, which is constructed as a cone, and is arranged in the dropping bin and upstream of the screen, and the rotating body is configured to rotate to break up the powder introduced at the feed end.

[0005] In the above embodiment, along the direction of the battery powder falling, the rotating body is located above the screen, the battery powder enters the falling bin from the feeding end of the falling bin, and the powder is broken up under the rotation of the rotating body. The broken up powder passes through the screen and is sent out from the discharge end. Due to the diversity of battery powder, there is a problem of battery powder agglomeration. The large-volume battery powder blocks are broken up by the rotation of the rotating body, which improves the problem of battery powder clogging at the screen due to its large volume during the falling process, resulting in equipment blockage, and increases the falling speed of the battery powder, as well as the production efficiency of the battery. The rotating body is a cone, and the cone can generate different centrifugal forces at different parts during the rotation process. The different centrifugal forces generated from top to bottom along the rotating body are more conducive to the grading of battery powder. Large-block battery powder is more likely to be thrown to the rotating body, collide with the inner wall of the rotating body and break up, forming small particles of battery powder, which are easier to pass through the screen.

[0006] In some embodiments, the rotating body is disposed above the screen, and a rotation axis of the rotating body is perpendicular to the screen.

[0007] In the above embodiments, the rotating body is located above the sieve and below the feeding end. After the material falls from the feeding end and is guided by the rotating body, the amount of falling material can be controlled, preventing the battery powder from piling up vertically on the sieve and causing blockage. The volume of the rotating body itself can control the amount and speed of the battery powder, making the battery powder fall onto the sieve more dispersedly. Moreover, the rotating body is vertically arranged, making it easier for the battery powder to fall smoothly along the rotating body to the sieve due to gravity, improving the falling efficiency. And during the falling process, the battery powder is rotated and dispersed by the rotating body, avoiding accumulation and blockage at the sieve.

[0008] In some embodiments, the inner wall of the material dropping bin is configured to impact and gather the powder rotated and thrown out by the rotating body.

[0009] In the above embodiments, the inner diameter of the material dropping bin is larger than the outer dimension of the rotating body. During the process of the rotating body guiding the battery powder to fall onto the sieve, the rotating body rotates to generate centrifugal force, throwing the battery powder in all directions. The battery powder impacts the inner wall of the material dropping bin and is further dispersed by the inner wall of the material dropping bin, which can improve the passing rate of the battery powder through the sieve. And the inner wall of the material dropping bin encloses the battery powder, preventing the battery powder from scattering in all directions and making it all gather and fall onto the sieve, reducing the waste of battery materials.

[0010] In some embodiments, the rotating body is configured as a frustum cone that tapers from the discharge end to the feed end.

[0011] In the above embodiments, the diameter of the rotating body is smaller near the feed end and larger near the discharge end. During the rotation of the rotating body, different centrifugal forces can be generated from top to bottom to classify battery powder of different volumes, making it easier for large-volume battery powder to be thrown onto the rotating body and collide with the inner wall of the rotating body, being broken into small-volume powder. And the inclination angle of the conical rotating body can guide the battery powder to be thrown from the cone top to the cone bottom and slide or roll along the conical surface. Due to the conical design, the material moves on a gradually increasing radius, classifying the powder, improving the fluidity, reducing the accumulation of powder on the surface of the rotating body. Finally, the powder at the cone bottom part is subjected to a greater centrifugal force, causing the large-volume powder to be thrown towards the inner wall of the material dropping bin, colliding and being dispersed with the inner wall. Some of the powder slides along the inner wall of the material dropping bin, and some of the powder flows back towards the rotating body and finally passes through the sieve, thus improving the powder dropping effect.

[0012] In some embodiments, at least one convex block is provided on the outer wall of the rotating body; the convex block is provided at a position of the rotating body near the discharge end.

[0013] In the above embodiments, during the process of the powder material flowing along the rotating body, it collides with the bumps, and is more easily dispersed, which can alleviate the problem of powder caking or agglomeration and improve the efficiency of the powder material passing through the sieve mesh. Moreover, during the process of the powder material flowing along the rotating body, it collides and is dispersed with the bumps before separating from the rotating body, which is conducive to fully dispersing the powder material before it falls onto the sieve mesh, and slowing down the problem of the powder caking and accumulating on the sieve mesh and blocking the sieve mesh. And due to the setting of the bumps, the large-volume powder material can be more easily thrown onto the rotating body, collide with the inner wall of the rotating body, and be dispersed into small-volume powder material.

[0014] In some embodiments, the bump is configured as a triangular body; and a corner end is configured at a part of the bump away from the rotating body.

[0015] In the above embodiments, the bump is configured as a triangular body. The edges and corner ends of the triangular body are more likely to cut into the powder material, and can generate greater cutting and crushing forces, making it easier to loosen and disperse the caked or adhered powder material, etc., and enhancing the powder dispersing effect. And a corner end is configured at a part of the bump away from the rotating body, increasing the contact area between the powder material and the bump. During the collision process between the tip and the powder material, it can generate greater cutting and crushing forces, more easily cut into the caked or adhered powder material, and loosen and disperse the powder material, etc., enhancing the powder dispersing effect.

[0016] In some embodiments, at least two ribs are provided at intervals on the outer wall of the rotating body, and the ribs extend along the direction from the feed end to the discharge end.

[0017] In the above embodiments, the ribs extend along the direction from the feed end to the discharge end. A channel is formed between two adjacent ribs, and the channel is used to guide the powder material to slide from the feed end to the discharge end direction, avoiding the powder material from accumulating or staying, and making the powder material more evenly dispersed and fall onto the sieve mesh during the rotation of the rotating body. Moreover, during the process of the powder material flowing along the channel, it will also collide and rub with the ribs multiple times, so as to be further dispersed, which helps to break up the caked or agglomerated powder material and keep it in a loose state.

[0018] In some embodiments, a channel that flares from the feed end to the discharge end is formed between two adjacent ribs.

[0019] In the above embodiments, the channel is in a flared shape from the feed end to the discharge end, so that the channel gradually widens along the direction from the feed end to the discharge end, reducing the flow resistance of the powder material in the channel and reducing blockage and accumulation.

[0020] In some embodiments, a bump is provided at a part of the rotating body close to the discharge end, and the bump is located outside the flared end of the channel.

[0021] In the above embodiments, the bump is located below the flared end of the channel and generally faces the flared end of the channel. After the powder material falls along the channel, it can strike on the bump, so that the powder material is further dispersed, improving the dispersion effect of the powder material.

[0022] In some embodiments, the rotating assembly further includes a rod member, the rod member is fixedly connected to the screen, and the rotating body is rotatably disposed on the rod member.

[0023] In the above embodiments, the rod member is vertically disposed on the screen, and the rotating body is rotatably disposed on the rod member. The entire rotating assembly has a simple structure and is convenient for installation and disassembly with the screen.

[0024] In some embodiments, the rotating body is configured as a hollow structure, the rotating assembly further includes a power member, the power member is fixedly disposed on the rod member and is located inside the rotating body, and the power member is drivingly connected to the rotating body.

[0025] In the above embodiments, the rotating body is arranged as a hollow structure, which can reduce the weight of the rotating assembly, and the power member is arranged inside the hollow structure of the rotating body, which can effectively utilize the space inside the rotating body, making the structure of the entire rotating assembly compact. Moreover, the rotating body is equivalent to covering the top and the outside of the power member, which can reduce the impact damage of the powder material on the power member.

[0026] Some embodiments of the present application further provide a battery preparation system, which includes the blanking device for battery powder materials in any of the above embodiments; a pushing device; a blanking pipe connecting the discharge end of the blanking bin and the pushing device; a vibrator disposed on the blanking pipe; and a stirring device connected to the discharge port of the pushing device.

[0027] In the above embodiments, the battery powder materials first pass through the blanking device, are fed at the inlet end of the blanking bin, are dispersed by the rotation of the rotating body, the powder materials enter the blanking pipe through the discharge end, and enter the pushing device under the action of the vibrator in the blanking pipe. The pushing device pushes the powder materials to the stirring device, and the powder materials are stirred with the corresponding solvent in the stirring device to obtain battery slurry. The battery preparation system provided by the embodiments of the present application includes the blanking device in any of the above embodiments and correspondingly has the beneficial effects of the blanking device.

[0028] Based on the above technical solutions, the present application has at least the following beneficial effects:

[0029] In some embodiments, along the falling direction of the battery powder material, the rotating body is located above the screen mesh. The battery powder material enters the blanking bin from the feeding end of the blanking bin. Under the rotation of the rotating body, the powder material is dispersed. The dispersed powder material passes through the screen mesh and is sent out from the discharging end. Due to the diversity of the battery powder material, there is a problem of agglomeration of the battery powder material. By rotating the rotating body, the large-volume battery powder material blocks are dispersed, improving the problem that the battery powder material accumulates and blocks at the screen mesh due to its too large volume during the blanking process, resulting in material blockage of the equipment, increasing the falling speed of the battery powder material, and improving the production efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to the drawings without creative efforts.

[0031] Figure 1 is a schematic structural diagram of a vehicle disclosed in some embodiments of the present application;

[0032] Figure 2 is an exploded structural diagram of a battery cell disclosed in some embodiments of the present application;

[0033] Figure 3 is a schematic diagram of a battery preparation system disclosed in some embodiments of the present application;

[0034] Figure 4 is a schematic diagram of a blanking device disclosed in some embodiments of the present application;

[0035] Figure 5 is a top view schematic diagram of a blanking device disclosed in some embodiments of the present application;

[0036] Figure 6 is a schematic diagram of a rotating assembly disclosed in some embodiments of the present application;

[0037] Figure 7 is an exploded structural diagram of a rotating assembly disclosed in some embodiments of the present application.

[0038] In the drawings, the drawings are not drawn to actual scale.

[0039] Marking description: 1 - blanking bin; 11 - feeding end; 12 - discharging end; 13 - support; 2 - screen; 3 - rotating assembly; 31 - rotating body; 32 - bump; 33 - rib; 331 - channel; 34 - rod; 35 - power component; 361 - first mounting bracket; 362 - second mounting bracket; 363 - first bearing; 364 - second bearing; 365 - first cover; 366 - second cover; 4 - first valve; 5 - feeding bin; 6 - second valve; 10 - blanking device; 20 - vibrator; 30 - pushing device; 40 - stirring device; 50 - blanking pipe; 100 - battery device; 100a - battery cell; 101 - housing; 102 - battery core; 103 - end plate; 104 - terminal; 105 - explosion-proof valve; 200 - vehicle; 201 - axle; 202 - wheel; 203 - motor; 204 - controller. Detailed implementation mode

[0040] The following further describes the implementation mode of the present application in detail in combination with the drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principle of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0041] In the description of the present application, it should be noted that unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable error range. "Parallel" is not strictly parallel, but within the allowable error range.

[0042] The orientation words appearing in the following description are all the directions shown in the drawings, and do not limit the specific structure of the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0043] At present, from the perspective of the development of the market situation, the application of power batteries is becoming more and more extensive. Power batteries are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in electric vehicles such as electric motorcycles and electric cars, as well as many other fields. With the continuous expansion of the application fields of power batteries, the market demand is also constantly increasing.

[0044] The battery disclosed in the embodiments of the present application can be used as the power source of an electrical device or as the energy storage element of various energy storage systems.

[0045] The electrical device can be a mobile phone, a portable device, a laptop computer, a battery car, an electric vehicle, a ship, an electric toy, an electric tool, etc. Among them, the electric toy includes fixed or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric aircraft toys; the electric tool includes metal cutting electric tools, grinding electric tools, assembly electric tools, and electric tools for railways, etc., such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact electric drills, concrete vibrators, and electric planers.

[0046] For the convenience of description, the following embodiments will take a vehicle 200, which is an electrical device provided in some embodiments of the present application, as an example for description.

[0047] Refer to Figure 1 , Figure 1 which is a schematic structural diagram of the vehicle 200 provided in some embodiments of the present application. The vehicle 200 can be a fuel vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 200, and the battery device 100 can be arranged at the bottom, head, or tail of the vehicle 200. The battery device 100 can be used for the power supply of the vehicle 200. For example, the battery device 100 can be used as the operating power source of the vehicle 200. The vehicle 200 may further include an axle 201, wheels 202 connected to the axle 201, as well as a motor 203 and a controller 204. The motor 203 is used to drive the axle 201 to rotate, and the controller 204 is used to control the operation of the motor 203. The battery device 100 can be used to provide electrical energy for the operation of the motor 203 and other components in the vehicle.

[0048] In some embodiments of the present application, the battery device 100 can not only be used as the operating power source of the vehicle 200, but also as the driving power source of the vehicle 200, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 200.

[0049] Refer to Figure 2, in some embodiments, the battery device 100 includes at least one battery cell 100a, and each battery cell 100a includes a housing 101, an electrode assembly 102, an end plate 103, terminals 104, and an explosion-proof valve 105. One or more electrode assemblies 102 can be placed inside the housing 101, and the shape of the housing 101 can be determined according to the shape of the combination of one or more electrode assemblies 102. For example, the housing 101 can be a hollow cuboid, cube, or cylinder, and one of the faces of the housing 101 has an opening for one or more electrode assemblies 102 to be placed inside the housing 101. An end plate 103 is provided on the opening face of the housing 101, and the end plate 103 closes the opening of the housing 101. Terminals 104 and an explosion-proof valve 105 are provided on the end plate 103.

[0050] In some embodiments, the electrode assembly 102 includes electrode plates and a separator. Among them, the electrode plates include an anode plate and a cathode plate. Both the anode plate and the cathode plate include a current collector and a coating layer. The active material of the anode plate is coated on the current collector of the anode plate to form a coating layer, and the active material of the cathode plate is coated on the current collector of the cathode plate to form a coating layer. The separator is an insulator and is disposed between the anode plate and the cathode plate. The separator is used to separate the coating layer of the anode plate and the coating layer of the cathode plate. The anode plate, the separator, and the cathode plate are stacked and wound in sequence to form the electrode assembly 102.

[0051] Reference Figure 3 , in the process of preparing the battery electrode plate, the powder material is put into the stirring device 40 through the blanking device 10. In the stirring device 40, the powder material is mixed and stirred with the solvent. After being stirred and dispersed by the stirring device 40, a uniform slurry is formed. The slurry can be the active material of the anode plate or the active material of the cathode plate. The slurry is pumped from the stirring device 40 to the transfer tank through a pipeline, and then pumped from the transfer tank to the coating head to be coated on the current collector to form a coating layer.

[0052] In some related technologies, there is a problem of material blockage during the blanking process of the powder material.

[0053] Based on this, some embodiments of the present application provide a blanking device for battery powder materials and a battery preparation system, which are used to alleviate the problem of material blockage.

[0054] Reference Figure 4 And Figure 5 , in some embodiments, the blanking device 10 for battery powder materials includes a blanking bin 1, a screen 2, and a rotating assembly 3.

[0055] The blanking bin 1 includes a feed end 11 and a discharge end 12.

[0056] The screen 2 is provided at the discharge end 12.

[0057] The rotating assembly 3 includes a rotating body 31 which is constructed as a cone. The rotating body 31 is disposed in the feeding bin 1 and upstream of the screen 2 . The rotating body 31 is configured to rotate to break up the powder introduced from the feeding end 11 .

[0058] In the above embodiment, along the falling direction of the battery powder, the rotating body 31 is located above the screen 2, and the battery powder enters the falling bin 1 from the feeding end 11 of the falling bin 1. Under the rotation of the rotating body 31, the powder is broken up, and the broken up powder passes through the screen 2 and is sent out from the discharge end 12. Due to the diversity of battery powder, there is a problem of battery powder agglomeration. The large volume of battery powder blocks is broken up by the rotation of the rotating body 31, which improves the problem that the battery powder accumulates and clogs at the screen 2 due to its large volume during the falling process, resulting in equipment blockage, thereby increasing the falling speed of the battery powder and improving the production efficiency of the battery.

[0059] In the above embodiment, the rotating body 31 is a cone. During the rotation process, the cone can generate different centrifugal forces at different parts. The different centrifugal forces generated from top to bottom along the rotating body 31 are more conducive to the classification of battery powder. Large pieces of battery powder are more easily thrown onto the rotating body 31, collide with the inner wall of the rotating body 31 and break up to form small particles of battery powder, which are easier to pass through the screen 2.

[0060] In some embodiments, the material dropping device 10 further includes a bracket 13 , and the bracket 13 is used to support the material dropping bin 1 .

[0061] refer to Figure 6 In some embodiments, the rotating body 31 is disposed above the screen 2 , and the rotation axis of the rotating body 31 is perpendicular to the screen 2 .

[0062] In the above embodiment, the rotating body 31 is located above the screen 2, and the rotating body 31 is located below the feed end 11. After the material falls from the feed end 11, the amount of material falling can be controlled by the guidance of the rotating body 31, and the battery powder will not fall vertically on the screen 2 to cause blockage. The volume of the rotating body 31 itself can control the amount and speed of the battery powder, so that the battery powder falls on the screen 2 more dispersedly, and the rotating body 31 is arranged vertically, which makes it easier for the battery powder to fall smoothly along the rotating body 31 to the screen 2 due to gravity, thereby improving the falling efficiency, and in the process of falling, the battery powder is broken up by the rotation of the rotating body 31, which can avoid accumulation and blockage at the screen 2.

[0063] In some embodiments, the inner wall of the material drop bin 1 is configured to impact and gather the powder thrown out by the rotating body 31 .

[0064] In the above embodiments, the inner diameter of the blanking bin 1 is larger than the outer dimension of the rotating body 31. During the process of the rotating body 31 guiding the battery powder material to fall onto the sieve mesh 2, the rotating body 31 rotates to generate centrifugal force, which throws the battery powder material in all directions. The battery powder material impacts the inner wall of the blanking bin 1 and is further dispersed by the inner wall of the blanking bin 1, which can improve the passing rate of the battery powder material through the sieve mesh 2. Moreover, the inner wall of the blanking bin 1 encloses the battery powder material, preventing it from scattering in all directions and making it all gather and fall onto the sieve mesh 2, reducing the waste of battery materials.

[0065] In some embodiments, the rotating body 31 is configured as a frustum cone that contracts from the discharge end 12 to the feed end 11.

[0066] In the above embodiments, the diameter of the rotating body 31 near the feed end 11 is small, and the diameter near the discharge end 12 is large. During the rotation of the rotating body 31, different centrifugal forces can be generated from top to bottom to classify battery powder materials of different volumes, making it easier for large-volume battery powder materials to be thrown onto the rotating body 31 and collide with the inner wall of the rotating body 31, being dispersed into small-volume powder materials. Moreover, the inclination angle of the conical rotating body 31 can guide the battery powder material to be thrown from the cone top to the cone bottom and slide or roll along the conical surface. Due to the conical design, the material moves on a gradually increasing radius, classifying the powder material, improving the fluidity, reducing the accumulation of the powder material on the surface of the rotating body 31. The powder material finally receives a greater centrifugal force at the bottom of the cone, causing the large-volume powder material to be thrown onto the inner wall of the blanking bin 1 and collide and disperse with the inner wall. Some of the powder material slides along the inner wall of the blanking bin 1, and some of the powder material flows back towards the rotating body 31 and finally passes through the sieve mesh 2, thereby improving the powder material blanking effect.

[0067] In some embodiments, at least one convex block 32 is provided on the outer wall of the rotating body 31.

[0068] In the above embodiments, during the process of the powder material flowing along the rotating body 31, it collides with the convex block 32 and is more easily dispersed, which can alleviate the problem of powder material caking or agglomeration and improve the efficiency of the powder material passing through the sieve mesh 2.

[0069] In some embodiments, the convex block 32 is provided at a position of the rotating body 31 near the discharge end 12.

[0070] In the above embodiments, during the process of the powder material flowing along the rotating body 31, it collides and is dispersed with the convex block 32 before separating from the rotating body 31, which is conducive to fully dispersing the powder material before it falls onto the sieve mesh 2, slowing down the problem of the powder material caking and accumulating on the sieve mesh 2 and blocking the sieve mesh 2. Moreover, due to the setting of the convex block 32, it can make it easier for large-volume powder materials to be thrown onto the rotating body 31 and collide with the inner wall of the rotating body 31, being dispersed into small-volume powder materials.

[0071] In some embodiments, the convex block 32 is configured as a triangular body.

[0072] In the above embodiment, the bump 32 is configured as a triangular body, and the edges and corners of the triangular body are more likely to cut into the powder material, capable of generating greater cutting and crushing forces, making it easier to loosen and disperse the agglomerated or adhered powder material, etc., enhancing the powder dispersing effect.

[0073] In some embodiments, the part of the bump 32 away from the rotating body 31 is configured with a corner end.

[0074] In the above embodiment, the part of the bump 32 away from the rotating body 31 is configured with a corner end, increasing the contact area between the powder material and the bump. During the collision between the tip and the powder material, greater cutting and crushing forces can be generated, making it easier to cut into the agglomerated or adhered powder material, loosen and disperse the powder material, etc., enhancing the powder dispersing effect.

[0075] In some embodiments, at least two ribs 33 are provided at intervals on the outer wall of the rotating body 31, and the ribs 33 extend along the direction from the feed end 11 to the discharge end 12.

[0076] In the above embodiment, the ribs 33 extend along the direction from the feed end 11 to the discharge end 12, and a channel 331 is formed between two adjacent ribs 33. The channel 331 is used to guide the powder material to slide from the feed end 11 towards the discharge end 12, avoiding powder material accumulation or retention, so that the powder material is more evenly dispersed and falls onto the screen 2 during the rotation of the rotating body 31. Moreover, during the process of flowing along the channel 331, the powder material will also collide and rub against the ribs 33 multiple times, thereby being further dispersed, contributing to breaking up the agglomerated or aggregated powder material and keeping it in a loose state.

[0077] In some embodiments, a channel 331 that flares from the feed end 11 to the discharge end 12 is formed between two adjacent ribs 33.

[0078] In the above embodiment, the channel 331 is in a flared shape from the feed end 11 to the discharge end 12, such that the channel 331 gradually becomes wider along the direction from the feed end 11 to the discharge end 12, reducing the flow resistance of the powder material in the channel 331 and reducing blockage and accumulation.

[0079] In some embodiments, a bump 32 is provided at the part of the rotating body 31 close to the discharge end 12, and the bump 32 is located outside the flared end of the channel 331.

[0080] In the above embodiment, the bump 32 is located below the flared end of the channel 331, generally facing the flared end of the channel 331. After the powder material falls along the channel 331, it can impact on the bump 32, further dispersing the powder material and improving the powder dispersing effect.

[0081] In some embodiments, the rotating assembly 3 further includes a rod member 34, the rod member 34 is fixedly connected to the screen 2, and the rotating body 31 is rotatably arranged on the rod member 34.

[0082] In the above embodiments, the rod member 34 is vertically disposed on the screen 2, and the rotating body 31 is rotatably disposed on the rod member 34. The entire rotating assembly 3 has a simple structure and is convenient for installation and disassembly with the screen 2.

[0083] In some embodiments, the rotating body 31 is configured as a hollow structure. The rotating assembly 3 further includes a power member 35. The power member 35 is fixedly disposed on the rod member 34 and is located inside the rotating body 31. The power member 35 is drivingly connected to the rotating body 31.

[0084] In the above embodiments, the rotating body 31 is set as a hollow structure, which can reduce the weight of the rotating assembly 3. Moreover, the power member 35 is disposed inside the hollow structure of the rotating body 31, which can effectively utilize the space inside the rotating body 31, making the structure of the entire rotating assembly 3 compact. Also, the rotating body 31 is equivalent to covering the top and the outside of the power member 35, which can reduce the impact damage of the powder material on the power member 35.

[0085] In some embodiments, the power member 35 includes a motor. The power shaft of the motor is drivingly connected to the rotating body 31.

[0086] Reference Figure 7 In some embodiments, the rotating assembly 3 further includes a first mounting bracket 361, a second mounting bracket 362, a first bearing 363, a second bearing 364, a first cover 365, and a second cover 366.

[0087] The first mounting bracket 361 and the second mounting bracket 362 are motor mounting brackets. Both the first mounting bracket 361 and the second mounting bracket 362 are fixedly arranged on the rod member 34, and the first mounting bracket 361 is closer to the screen 2 than the second mounting bracket 362. The motor is arranged between the first mounting bracket 361 and the second mounting bracket 362 and is fixed on the rod member 34 through the first mounting bracket 361 and the second mounting bracket 362. The first end of the power shaft of the motor passes through the first mounting bracket 361 and is provided with the first bearing 363. The first bearing 363 is mounted on the first mounting bracket 361. The first cover 365 is arranged on the side of the first mounting bracket 361 close to the discharge end 12. The second end of the power shaft of the motor extends from the end of the rotating body 31 close to the discharge end 12 towards the end of the rotating body 31 close to the feed end 11, and passes through the second mounting bracket 362, extending to the top of the rotating body 31 close to the feed end 11. The second end of the power shaft is provided with the second bearing 364. The second bearing 364 is mounted on the rotating body 31. The second cover 366 is arranged outside the top of the rotating body 31 close to the feed end 11.

[0088] Optionally, both the first bearing 363 and the second bearing 364 can adopt ceramic bearings.

[0089] In the above embodiments, the rotating body 31 can be driven by a motor to rotate, so as to break up large-volume powder materials. Moreover, the rotating body 31 can control the feeding and discharging speed by using its own volume. Of course, the rotating body 31 can also control the operating speed by adjusting the knob of the motor.

[0090] In some embodiments, the rotating assembly 3 includes a control part, a power part and a rotating main body part. Among them, the control part includes a power line, a signal line and an integrated circuit board. The motor action is wirelessly controlled through an HMI (Human Machine Interface). The power part includes a mini motor and a battery pack power supply. The battery pack power supply supplies power to the control part and the power part.

[0091] The rotating main body part includes a rotating body 31, a rod member 34, a first mounting bracket 361, a second mounting bracket 362, a first bearing 363, a second bearing 364, a first cover 365 and a second cover 366.

[0092] One end of the rod member 34 passes through the screen 2 and is fixed to the screen 2. The first mounting bracket 361 and the second mounting bracket 362 are arranged at intervals and are fixedly connected to the rod member 34 by threads. The first mounting bracket 361 and the second mounting bracket 362 are motor mounting brackets, and the motor is arranged between the first mounting bracket 361 and the second mounting bracket 362. The first mounting bracket 361 is fixedly connected to the motor by a stainless steel countersunk nut. The rotating body 31 covers the outside of the motor and the motor mounting bracket. The second bearing 364 and the first bearing 363 are respectively installed at the top end of the rotating body 31 and the first mounting bracket 361, and then the first cover 365 and the second cover 366 are installed to fix the first bearing 363, the second bearing 364 and prevent dust, and finally the motor wire is connected to the battery pack power supply.

[0093] During operation, the battery pack inside the motor supplies power to the motor, and the motor rotation is wirelessly controlled through the integrated circuit board. The motor controls the rotation of the rotating body 31. When feeding, the powder materials are broken up by the convex blocks 32 and the ribs 33 through the rotating body 31, and then are filtered into small-volume powder materials by the screen 2 and fall, achieving the effect of preventing material blockage.

[0094] The entire rotating assembly 3 is detachable, which is convenient for replacing the battery inside the motor and for maintenance.

[0095] Optionally, the whole screen is processed by 304 stainless steel, and the surface is chrome-plated to increase hardness and prevent scratching.

[0096] Reference Figure 3 In some embodiments of the present application, a battery preparation system is further provided, which includes the blanking device 10 for battery powder materials in any of the above embodiments.

[0097] The battery preparation system provided by the embodiments of the present application includes the blanking device 10 of any of the above embodiments, and accordingly has the beneficial effects of the blanking device 10.

[0098] In some embodiments, the battery preparation system further includes a pusher device 30, a blanking pipe 50, a vibrator 20, and a stirring device 40.

[0099] The blanking pipe 50 is connected to the discharge end 12 of the blanking bin 1 and the pusher device 30. The vibrator 20 is provided on the blanking pipe 50.

[0100] The stirring device 40 is connected to the discharge port of the pusher device 30.

[0101] In the above embodiments, the battery powder first passes through the blanking device 10, enters at the inlet end of the blanking bin 1, is dispersed by the rotation of the rotating body 31, the powder enters the blanking pipe 50 through the discharge end 12, and enters the pusher device 30 under the action of the vibrator 20 in the blanking pipe 50. The pusher device 30 pushes the powder to the stirring device 40, and the powder is stirred with the corresponding solvent in the stirring device 40 to obtain the battery slurry.

[0102] In some embodiments, the battery preparation system further includes a first valve 4. The first valve 4 is provided at the connection between the blanking pipe 50 and the blanking bin 1 and is located upstream of the vibrator 20. The first valve 4 is used to adjust the powder flow rate entering the blanking pipe 50 from the blanking bin 1.

[0103] In some embodiments, the battery preparation system further includes a feed bin 5 and a second valve 6. The feed bin 5 is provided upstream of the blanking bin 1 and is interconnected. The powder is conveyed to the blanking bin 1 through the feed bin 5. A second valve 6 is provided at the connection between the feed bin 5 and the blanking bin 1. The second valve 6 is used to control the powder flow rate conveyed from the feed bin 5 to the blanking bin 1.

[0104] In some embodiments, the pusher device 30 includes a cylinder push rod mechanism or a screw push rod mechanism.

[0105] In the present application, the battery preparation system mainly describes the preparation process of battery electrode sheets.

[0106] The preparation process of the battery electrode sheet includes the pre-process of manufacturing power lithium batteries and energy storage battery electrode sheets. Specifically: first, the powder is sent into the stirring device 40 through the blanking device 10, the vibrator 20, and the pusher device 30, then the powder is mixed with the solvent in the stirring device 40, and after being stirred and dispersed by the stirring device 40, a uniform slurry is formed. The slurry is pumped from the stirring device 40 to the transfer tank through the slurry pipeline, and then from the transfer tank to the coating head for the coating process.

[0107] Since the battery powder may be sticky powder or powder with high humidity (such as lithium iron phosphate material), it is easy to agglomerate, and there is a problem of material blockage during the process of feeding it into the stirring device 40. The feeding device provided in this application can realize the normal feeding of the powder and relieve the waiting time of the subsequent processes affected by the material blockage.

[0108] In this application, the rotating body 31 of the feeding device 10 is rotated by a motor. The large-volume powder is scattered by the edges and corners through the rotating body 31, then enters the feeding pipe 50 after being filtered by the screen 2, and continues to fall by the vibration of the vibrator 20. Finally, it is sent into the stirring device 40 by a pushing device 30 such as a cylinder push rod / screw push rod to relieve the problem of powder blockage.

[0109] Based on the above-described embodiments of the present disclosure, in the case of no explicit negation or conflict, the technical features of one embodiment can be beneficially combined with one or more other embodiments.

[0110] Although this application has been described with reference to the preferred embodiments, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of this application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. This application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery powder dropping device, characterized in that: include: A material discharge bin (1), comprising a feed end (11) and a discharge end (12); A screen (2) is arranged at the discharge end (12); and The rotating assembly (3) comprises a rotating body (31), wherein the rotating body (31) is constructed as a cone, and the rotating body (31) is arranged in the drop bin (1) and located upstream of the screen (2). The rotating body (31) is configured to rotate to break up the powder introduced from the feed end (11).

2. The battery powder dropping device according to claim 1, characterized in that: The rotating body (31) is arranged above the screen (2), and the rotation axis of the rotating body (31) is perpendicular to the screen (2).

3. The battery powder dropping device according to claim 1, characterized in that: The inner wall of the material drop bin (1) is configured to impact and gather the powder thrown out by the rotating body (31).

4. The battery powder dropping device according to claim 1, characterized in that: The rotating body (31) is configured as a truncated cone that contracts from the discharge end (12) toward the feed end (11).

5. The battery powder dropping device according to any one of claims 1 to 4, characterized in that: At least one protrusion (32) is provided on the outer wall of the rotating body (31); and the protrusion (32) is provided at a position of the rotating body (31) close to the discharge end (12).

6. The battery powder dropping device according to claim 5, characterized in that: The convex block (32) is constructed as a triangle; and the portion of the convex block (32) away from the rotating body (31) has an angular end.

7. The battery powder dropping device according to any one of claims 1 to 4, characterized in that: At least two ribs (33) are arranged at intervals on the outer wall of the rotating body (31), and the ribs (33) extend in a direction from the feed end (11) to the discharge end (12).

8. The battery powder dropping device according to claim 7, characterized in that: A channel (331) that expands from the feed end (11) to the discharge end (12) is formed between two adjacent ribs (33).

9. The battery powder dropping device according to claim 8, characterized in that: A protrusion (32) is provided at a portion of the rotating body (31) close to the discharge end (12), and the protrusion (32) is located outside the flared end of the channel (331).

10. The battery powder dropping device according to any one of claims 1 to 4, characterized in that: The rotating assembly (3) further comprises a rod (34), wherein the rod (34) is fixedly connected to the screen (2), and the rotating body (31) is rotatably disposed on the rod (34).

11. The battery powder dropping device according to claim 10, characterized in that: The rotating body (31) is constructed as a hollow structure. The rotating assembly (3) further comprises a power member (35). The power member (35) is fixedly arranged on the rod member (34) and is located inside the rotating body (31). The power member (35) is drivingly connected to the rotating body (31).

12. A battery preparation system, characterized in that: include: The battery powder dropping device according to any one of claims 1 to 11; Pushing device (30); A material discharge pipe (50) connected to a discharge end (12) of the material discharge bin (1) and the material pushing device (30); a vibration exciter (20), arranged on the drop tube (50); and The stirring device (40) is connected to the discharge port of the pushing device (30).

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