Mixing device for lithium battery negative electrode material production

Abstract

The utility model discloses a lithium battery cathode material production mixing device which comprises a supporting table, supporting legs are installed at the two ends of the bottom of the supporting table, an installation frame is fixed between the supporting legs, a mixing tank is installed on the supporting table, a discharging pipe is installed at the bottom of the mixing tank, a sealing plug is installed at the bottom of the discharging pipe, and the sealing plug is connected with the supporting table. A cover plate is mounted at the top of the mixing tank through bolts, a mixing mechanism and a feeding pipe are mounted on the cover plate, and the feeding pipe penetrates through the cover plate. Compared with the prior art, the feeding mechanism is used for feeding a negative electrode material, the motor is matched with the driving mechanism to drive the stirring frame to be matched with the feeding screw rod to rotate, at the moment, the feeding screw rod rotates reversely, the negative electrode material is stirred and uniformly mixed, and after uniform mixing is completed, the motor is used for driving the feeding screw rod to rotate forwards; the uniformly mixed negative electrode material can be conveniently discharged, and the production efficiency and the mixing uniformity of the negative electrode material are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a mixing device for producing lithium battery anode materials. Background Technology

[0002] The negative electrode material is a crucial component of lithium-ion batteries, primarily functioning to absorb and release lithium ions to complete the battery's charging and discharging process. Anode materials typically consist of active materials, conductive agents, binders, and current collectors. Active materials include carbon materials such as graphite, hard carbon, and soft carbon. These materials not only act as electronic and lithium-ion conductors, facilitating the flow of electrons within the battery, but also store lithium ions.

[0003] In the production process of negative electrode materials, it is necessary to mix all the components. However, the stirring shaft can only rotate in one direction, which makes it impossible to fully mix the lithium battery negative electrode materials, resulting in low work efficiency. Although the stirring direction of the stirring rack can be changed by starting the motor in the forward or reverse direction, this will cause certain damage to the motor and has certain shortcomings. Therefore, we propose a mixing device for the production of lithium battery negative electrode materials. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a mixing device for the production of lithium battery anode materials.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mixing device for producing lithium battery anode materials includes a support platform, with support legs installed at both ends of the bottom of the support platform, and a mounting frame fixed between the support legs. A mixing tank is installed on the support platform, and a feeding pipe is installed at the bottom of the mixing tank. A sealing plug is installed at the bottom of the feeding pipe. A cover plate is bolted to the top of the mixing tank, and a mixing mechanism and a feeding pipe are installed on the cover plate, with the feeding pipe penetrating the cover plate.

[0007] Preferably, the cover plate is equipped with a motor and a drive mechanism, as well as a connecting frame installed at the inner bottom of the mixing tank. The motor is connected to the drive mechanism, the drive mechanism is equipped with a stirring frame and a feeding screw, and the connecting frame is equipped with a sleeve.

[0008] Preferably, the feeding tube and the sleeve are coaxial, the feeding screw is inserted into the inside of the sleeve and the feeding tube, and both the sleeve and the feeding tube are rotatably connected to the feeding screw.

[0009] Preferably, the driving mechanism includes a housing fixed to the bottom of the cover plate, a main shaft rotatably connected to the housing, a first bevel gear fixedly sleeved on the main shaft, the main shaft penetrating the housing, a sleeve rotatably connected to the main shaft, the sleeve being inserted into and rotatably connected to the housing, a second bevel gear and a movable frame fixedly sleeved on the sleeve, a connecting shaft rotatably connected to the inner wall of the housing, and a third bevel gear fixedly sleeved on the connecting shaft.

[0010] Preferably, the first bevel gear and the third bevel gear are meshing drives, and the second bevel gear and the third bevel gear are meshing drives.

[0011] Preferably, the movable frame is located outside the housing.

[0012] Preferably, there are two sets of stirring racks, which are located on both sides of the movable frame and are symmetrically distributed. The feeding screw is fixed to the bottom of the main shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention introduces negative electrode material into the feed mechanism, and uses a motor and drive mechanism to drive the stirring frame and feeding screw to rotate. At this time, the feeding screw rotates in the opposite direction to stir and mix the negative electrode material. After mixing, the motor drives the feeding screw to rotate in the forward direction to facilitate the discharge of the mixed negative electrode material, which greatly improves the efficiency of negative electrode material production and the uniformity of mixing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a mixing device for producing lithium battery anode materials according to the present invention.

[0016] Figure 2 for Figure 1 Internal installation diagram of the intermediate mixing tank;

[0017] Figure 3 for Figure 2 A cross-sectional view of the drive mechanism.

[0018] In the diagram: 1 Support platform, 2 Support leg, 3 Mounting frame, 4 Mixing tank, 5 Feed pipe, 6 Cover plate, 7 Mixing mechanism, 71 Motor, 72 Drive mechanism, 721 Housing, 722 Main shaft, 723 First bevel gear, 724 Sleeve, 725 Second bevel gear, 726 Movable frame, 727 Connecting shaft, 728 Third bevel gear, 73 Mixing frame, 74 Feeding screw, 75 Connecting frame, 76 Sleeve, 8 Feed pipe. Detailed Implementation

[0019] 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.

[0020] Reference Figure 1-3 A mixing device for producing lithium battery negative electrode materials includes a support platform 1, with support legs 2 installed at both ends of the bottom of the support platform 1, and a mounting bracket 3 fixed between the support legs 2. A mixing tank 4 is installed on the support platform 1, and a feeding pipe 5 is installed at the bottom of the mixing tank 4. A sealing plug is installed at the bottom of the feeding pipe 5. A cover plate 6 is bolted to the top of the mixing tank 4. A mixing mechanism 7 and a feeding pipe 8 are installed on the cover plate 6, and the feeding pipe 8 penetrates the cover plate 6. A motor 71 and a drive mechanism 72 are installed on the cover plate 6, and a [missing information - likely a device or mechanism] is installed at the inner bottom of the mixing tank 4. The connecting frame 75, motor 71 and drive mechanism 72 are connected. The drive mechanism 72 is equipped with a stirring frame 73 and a feeding screw 74. The connecting frame 75 is equipped with a sleeve 76. The discharge pipe 5 and the sleeve 76 are coaxial. The feeding screw 74 is inserted into the sleeve 76 and the discharge pipe 5. The sleeve 76 and the discharge pipe 5 are rotatably connected to the feeding screw 74. The drive mechanism 72 includes a housing 721 fixed to the bottom of the cover plate 6. A main shaft 722 is rotatably connected to the housing 721. A first bevel gear 723 is fixedly sleeved on the main shaft 722. 22 penetrates the housing 721. A sleeve 724 is rotatably connected to the main shaft 722. The sleeve 724 is inserted into and rotatably connected to the housing 721. A second bevel gear 725 and a movable frame 726 are fixedly sleeved on the sleeve 724. A connecting shaft 727 is rotatably connected to the inner wall of the housing 721. A third bevel gear 728 is fixedly sleeved on the connecting shaft 727. The first bevel gear 723 and the third bevel gear 728 are meshed, and the second bevel gear 725 and the third bevel gear 728 are also meshed. The movable frame 726 is located in the housing 721. Externally, there are two sets of stirring racks 73, which are located on both sides of the movable frame 726 and are symmetrically distributed. The feeding screw 74 is fixed to the bottom of the main shaft 722. The negative electrode material is fed in through the feeding mechanism. The motor and the drive mechanism drive the stirring rack and the feeding screw to rotate. At this time, the feeding screw rotates in the opposite direction to stir and mix the negative electrode material. After mixing, the motor drives the feeding screw to rotate in the forward direction to facilitate the discharge of the mixed negative electrode material, which greatly improves the production efficiency and mixing uniformity of the negative electrode material.

[0021] In use, the device is connected to a power source, and the motor 71 is started in reverse. The output shaft of the motor 71 drives the main shaft 722 to rotate. The main shaft 722 drives the first bevel gear 723 and the feeding screw 74 to rotate. The first bevel gear 723 drives the connecting shaft 727 and the third bevel gear 728 to rotate through meshing with the third bevel gear 728. The third bevel gear 728 drives the second bevel gear 725 to rotate through meshing with the second bevel gear 725. The second bevel gear 725 drives the sleeve 724 to rotate. The sleeve 724 drives the movable frame 726 to rotate. 26 drives the stirring rack 73 to rotate, and feeds the material for producing the negative electrode of the battery into the feed pipe 8. After the material enters the mixing tank 4, the material at the bottom is stirred to the top by the cooperation of the feeding screw 74 and the sleeve 76. Then the mixing rack 73 completes the mixing of the material. After the mixing is completed, the motor 71 is started in the forward direction and the sealing plug at the bottom of the discharge pipe 5 is removed. The output shaft of the motor 71 drives the feeding screw 74 to rotate in the forward direction through the main shaft 722. The feeding screw 74, in cooperation with the sleeve 76 and the discharge pipe 5, discharges the mixed material, which greatly improves the mixing efficiency.

[0022] In summary, compared with the prior art, this utility model introduces negative electrode material by setting up a feeding mechanism, and uses a motor and drive mechanism to drive the stirring frame and feeding screw to rotate. At this time, the feeding screw rotates in the opposite direction to stir and mix the negative electrode material. After mixing is completed, the motor drives the feeding screw to rotate in the forward direction to facilitate the discharge of the mixed negative electrode material, which greatly improves the efficiency of negative electrode material production and the uniformity of mixing.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mixing apparatus for producing lithium battery anode materials, comprising a support platform (1), characterized in that, Support legs (2) are installed at both ends of the bottom of the support platform (1). A mounting bracket (3) is fixed between the support legs (2). A mixing tank (4) is installed on the support platform (1). A discharge pipe (5) is installed at the bottom of the mixing tank (4). A sealing plug is installed at the bottom of the discharge pipe (5). A cover plate (6) is installed on the top of the mixing tank (4) by bolts. A mixing mechanism (7) and a feed pipe (8) are installed on the cover plate (6). The feed pipe (8) passes through the cover plate (6).

2. The mixing apparatus for producing lithium battery anode materials according to claim 1, characterized in that, The cover plate (6) is equipped with a motor (71) and a drive mechanism (72) as well as a connecting frame (75) installed at the bottom of the mixing tank (4). The motor (71) is connected to the drive mechanism (72). The drive mechanism (72) is equipped with a stirring frame (73) and a feeding screw (74). The connecting frame (75) is equipped with a sleeve (76).

3. The mixing apparatus for producing lithium battery anode materials according to claim 2, characterized in that, The feeding tube (5) and the sleeve (76) are coaxial. The feeding screw (74) is inserted into the sleeve (76) and the feeding tube (5). The sleeve (76) and the feeding tube (5) are rotatably connected to the feeding screw (74).

4. The mixing apparatus for producing lithium battery anode materials according to claim 2, characterized in that, The drive mechanism (72) includes a housing (721) fixed to the bottom of the cover plate (6), a main shaft (722) rotatably connected to the housing (721), a first bevel gear (723) fixedly sleeved on the main shaft (722), the main shaft (722) penetrating the housing (721), a sleeve (724) rotatably connected to the main shaft (722), the sleeve (724) being inserted into the interior of the housing (721) and rotatably connected thereto, a second bevel gear (725) and a movable frame (726) fixedly sleeved on the sleeve (724), a connecting shaft (727) rotatably connected to the inner wall of the housing (721), and a third bevel gear (728) fixedly sleeved on the connecting shaft (727).

5. The mixing apparatus for producing lithium battery anode materials according to claim 4, characterized in that, The first bevel gear (723) and the third bevel gear (728) are meshing transmissions, and the second bevel gear (725) and the third bevel gear (728) are meshing transmissions.

6. The mixing apparatus for producing lithium battery anode materials according to claim 4, characterized in that, The movable frame (726) is located outside the housing (721).

7. A mixing apparatus for producing lithium battery anode materials according to claim 4, characterized in that, The number of the stirring racks (73) is two sets, and the two sets of stirring racks (73) are located on both sides of the movable frame (726) and are symmetrically distributed. The feeding screw (74) is fixed to the bottom of the main shaft (722).

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