Anode material diverging mixing device

Abstract

The utility model discloses an anode material divergent mixing device which comprises a cylindrical barrel body, a stirring paddle is mounted in the center of the bottom of the barrel body, and a first motor for driving the stirring paddle to rotate is arranged below the barrel body; a discharging pipe and a discharging disc are installed on the upper side of the barrel body, and a second motor for driving the discharging pipe to rotate along the axis is arranged on the upper side of the barrel body. The discharging disc is of a disc-shaped structure and comprises upper and lower circular plates, an interlayer is arranged between the upper and lower circular plates, and the center of the upper circular plate is communicated with a pipe opening of the discharging pipe and used for being communicated with the interlayer. The powder is dispersed through the centrifugal dispersion effect of the discharging disc, the powder agglomeration phenomenon is avoided, the impact effect of powder adding is reduced, coal tar, graphene and SiOx particles used for anode materials can be evenly dispersed, and the quality of finished products is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrode material preparation equipment, and particularly relates to an anode material dispersion mixing device. BACKGROUND

[0002] Lithium ion batteries, as a kind of high efficient energy storage equipment, have been widely applied in mobile electronic products, electric vehicles and large-scale energy storage systems. In order to improve the energy density and cycle performance of the battery, new anode materials are always explored. Silicon monoxide (SiOx) is concerned due to its high theoretical specific capacity (1300-1500 mAh / g), but its application is limited by low electrical conductivity and irreversible side reactions with electrolyte.

[0003] Silicon monoxide (SiOx) as an anode material shows low initial coulombic efficiency (ICE) and poor cycle performance. These problems mainly result from the low electrical conductivity of SiOx and the irreversible side reactions with electrolyte. By introducing graphene, graphite and coal tar as components of the composite material, the electrical conductivity and chemical stability are improved. By introducing graphene and coal tar, SiOx particles are wrapped, the electrical conductivity of the anode material is improved, the side reactions are reduced, and thus the initial coulombic efficiency of the battery is improved. In the preparation process of wrapping SiOx particles by mixing graphene and coal tar first and then adding, since the coal tar is in liquid state and has high viscosity coefficient, the material should not be added too violently during stirring, and the powder material is easy to form a lump and enter the coal tar. Due to the limitation of stirring amplitude, the powder lump cannot be dispersed by stirring, and finally the problem of uneven dispersion of the powder is caused. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing an anode material dispersion mixing device, which solves the problem that anode powder material and liquid material are easy to form a lump when mixed.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0006] An anode material dispersion mixing device, comprising a barrel body in a cylindrical shape, a stirring paddle is installed at the bottom center of the barrel body, a first motor for driving the stirring paddle to rotate is arranged below the barrel body;

[0007] A discharge pipe is installed on the upper side of the barrel body, the upper end of the discharge pipe is an open side for a feeding port, the lower end extends to the inside of the barrel body, and a discharge disc is installed, a second motor for driving the discharge pipe to rotate along the axis is arranged on the upper side of the barrel body;

[0008] The blanking disc is disc-shaped structure, and the blanking disc comprises upper and lower circular plates, and a sandwich layer between the upper and lower circular plates.

[0009] Further, the arc-shaped connecting plates are connected between the upper and lower circular plates, and the connecting plates are multiple and uniformly arranged around the center of the circular plate to form multiple powder scattering channels.

[0010] The edge of the upper circular plate is provided with a eave wall, which is annular and surrounds the edge of the upper circular plate, and the eave wall is arc-shaped and curved towards the sandwich layer to guide the powder downward.

[0011] Further, the upper side of the barrel body is provided with a top plate, the top plate forms an opening side for feeding of the barrel body, the opening side is provided with a closable cover plate, the blanking pipe is limitingly installed on the top plate and rotationally matched, and the motor is installed on the top plate and located beside the blanking pipe and drives the blanking pipe to rotate around the axis through a belt wheel and a belt.

[0012] The feeding funnel is installed at the position of the feeding opening of the upper end of the blanking pipe, the lower end of the feeding funnel is extended and sleeved on the upper end of the blanking pipe, the third motor is installed in the feeding funnel, and the output end of the third motor is coaxially installed with a spiral feeder, and the spiral feeder is extended into the feeding pipe.

[0013] Further, the barrel body is arranged in a high position through a support frame, the support frame comprises a bottom plate and support walls on the front and back sides, the support walls are extended to the upper side of the barrel body and are provided with a hinged sleeve, and the barrel body is provided with a hinged shaft which is supported on the hinged sleeve and hingedly installed.

[0014] The utility model has the advantages that the powder is scattered through the centrifugal scattering of the blanking disc, the powder agglomeration phenomenon is avoided, the impact of the powder is reduced, the coal tar, graphene and SiOx particles of the anode material can be uniformly dispersed, and the product quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used for the embodiment description.

[0016] Figure 1 The utility model structural schematic diagram.

[0017] Figure 2 The utility model blanking disc structure schematic diagram.

[0018] Figure 3: A partial cross-sectional structural diagram of the feeding disc of this utility model.

[0019] The components represented by each number in the attached diagram are listed below: barrel body 1, stirring paddle 12, first motor 11, feeding pipe 2, feeding tray 3, second motor 21, circular plate 31, connecting plate 32, eaves 33, cover plate 13, feeding funnel 4, feeding pipe 42, third motor 41, screw feeder 43, support frame 5. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figures 1-3 As shown: An anode material dispersion mixing device includes a cylindrical barrel 1, with a stirring paddle 12 installed at the center of the bottom of the barrel 1, and a first motor 11 for driving the stirring paddle 12 to rotate located below the barrel 1; the corresponding shaft of the first motor passes through the center of the bottom of the barrel and extends to the upper side of the bottom of the barrel for mounting the stirring paddle, and the barrel prevents liquid coal tar from circulating during stirring.

[0022] A feeding pipe 2 is installed on the upper side of the barrel body 1. The feeding pipe is vertically arranged and coaxial with the barrel body. The upper end of the feeding pipe 2 is an open side for feeding powder materials, such as graphene or SiOx particles, to be added. The lower end extends into the interior of the barrel body 1 and is equipped with a feeding plate 3. A second motor 21 is installed on the upper side of the barrel body 1 to drive the feeding pipe 2 to rotate along the axis. The feeding plate is located above the coal tar, about 100-150cm above the liquid surface.

[0023] The feeding tray 3 has a disc-shaped structure, including upper and lower circular plates 31 with an interlayer between them. The center of the upper circular plate 31 is connected to the opening of the feeding pipe 2 to connect the interlayer. Powder is added through the upper opening of the feeding pipe and falls into the interlayer between the feeding trays. The feeding tray and the feeding pipe are an integral structure that rotates along the axis under the drive of the second motor. The powder falling into the feeding tray is spread out under the centrifugal force of rotation and spreads along the circumference of the interlayer, and is evenly sprinkled into the barrel. With the action of the stirring paddle in the barrel, it is evenly transferred into the liquid material.

[0024] The powder is dispersed by centrifugal dispersion through a feeding tray, preventing agglomeration and reducing the impact of powder addition. This ensures uniform dispersion of coal tar, graphene, and SiOx particles used in anode materials, improving the quality of the finished product. The preparation method involves first metering coal tar into a container, then sequentially adding graphene and SiOx particles. After the coal tar and graphene are mixed, the SiOx particles are added to form a coating.

[0025] As Figure 3 shown: the upper and lower circular plates 31 are connected with arc-shaped connecting plates 32, the connecting plates 32 are multiple, uniformly arranged around the center of the circular plate 31, forming multiple powder scattering channels. For uniformly dividing the powder material in the feeding pipe into multiple parts, and then uniformly scattering by the powder scattering channel. The edge of the upper circular plate 31 has an eave wall 33, which is annular and surrounds the edge side of the upper circular plate 31, and the eave wall 33 is arc-shaped and curved towards the interlayer, which is used to guide the powder downward. The structure of the eave wall can block the horizontal throwing of the powder, and form a shielding effect and arc-shaped downward guiding, preventing the granular powder from splashing after hitting the inner side wall of the barrel.

[0026] As Figure 1 shown: the upper side of the barrel 1 has a top plate, which forms an opening side for feeding the barrel 1, and the opening side has a closable cover plate 13. The feeding pipe 2 is limitingly installed on the top plate and rotationally matched. The second motor 21 is installed on the top plate and located beside the feeding pipe 2, and drives the rotation of the axis of the feeding pipe 2 through the belt pulley and the belt. The upper side of the barrel is sealed by the top plate, and the top plate has an opening side for adding liquid materials such as coal tar, which can keep the mixing process in a closed environment and prevent the powder from overflowing in the air. The position of the feeding pipe passing through the top plate has a limiting sleeve ring for limiting the feeding pipe and providing rotation support. The feeding pipe is sleeved with a belt pulley at the upper part of the top plate and driven by a belt. The feeding pipe 2 is provided with a feeding funnel 4 at the position of the feeding port at the upper end, and the lower end feeding pipe 42 of the feeding funnel 4 extends and is sleeved with the upper end pipe of the feeding pipe 2. The third motor 41 is installed in the feeding funnel 4, and the output end of the third motor 41 is coaxially installed with the screw feeder 43, which extends into the feeding pipe 42. For accurate feeding, the screw feeder includes a rotating shaft and a spiral blade on the outer side wall of the rotating shaft, which can not only adjust the feeding rate according to the rotating speed of the third motor, but also prevent the powder from being blocked in the extruded state.

[0027] The barrel 1 is arranged high by the support frame 5, which includes a bottom plate and support walls on the front and back sides, the support walls extend to the upper side of the barrel and have a hinged sleeve, and the barrel 1 has a hinged shaft supported by the hinged sleeve and hingedly installed. It is convenient to overturn the barrel after completing the mixing process to pour out the material.

[0028] The embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model.

Claims

1. Anode material dispersion mixing device characterized in that: It comprises a cylindrical barrel (1), the bottom center of which is provided with a stirring paddle (12), and a first motor (11) is arranged below the barrel (1) to drive the rotation of the stirring paddle (12). A discharge pipe (2) is arranged on the upper side of the barrel (1), the upper end of which is an open side for a feeding port, and the lower end extends into the barrel (1) and is provided with a discharge disc (3), and a second motor (21) is arranged on the upper side of the barrel (1) to drive the rotation of the discharge pipe (2) along the axis. The discharge disc (3) is a disc-shaped structure, which comprises upper and lower circular plates (31) with a sandwich layer therebetween, and the upper circular plate (31) is connected to the pipe opening of the discharge pipe (2) for communication with the sandwich layer.

2. The anode material diverging mixing device according to claim 1, wherein: Arc-shaped connecting plates (32) are connected between the upper and lower circular plates (31), which are arranged uniformly around the center of the circular plate (31) to form multiple powder scattering channels.

3. The anode material diverging mixing device of claim 2, wherein: The edge of the upper circular plate (31) has an eave wall (33), which is annular and surrounds the edge of the upper circular plate (31), and the eave wall (33) is arc-shaped and curved towards the sandwich layer to guide the powder downward.

4. The anode material diverging mixing device of claim 1, wherein: The upper side of the barrel (1) has a top plate, which forms an opening side for feeding the barrel (1), and the opening side is provided with a closable cover plate (13), the discharge pipe (2) is limitingly arranged on the top plate and is rotationally connected, the second motor (21) is arranged on the top plate, and the second motor (21) is located beside the discharge pipe (2) and drives the axial rotation of the discharge pipe (2) through a belt pulley and a belt.

5. The anode material diverging mixing device of claim 4, wherein: A feeding funnel (4) is arranged at the feeding port position of the upper end of the discharge pipe (2), the lower end feeding pipe (42) of the feeding funnel (4) extends and is sleeved on the upper end pipe opening of the discharge pipe (2), a third motor (41) is arranged in the feeding funnel (4), and a spiral feeder (43) is coaxially arranged on the output end of the third motor (41) and extends into the feeding pipe (42).

6. The anode material diverging mixing device of claim 1, wherein: The barrel (1) is arranged on a support frame (5), which comprises a bottom plate and front and rear support walls, the support walls extend to the upper side of the barrel and have a hinge sleeve, and the barrel (1) has a hinge shaft supported on the hinge sleeve and hingedly connected.

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