Three-dimensional motion mixer for dry-method electrode powder mixing

Abstract

The utility model relates to a three-dimensional motion mixing machine for dry-method electrode powder mixing, and belongs to the technical field of battery production, the three-dimensional motion mixing machine comprises a rack, a first rotating shaft, a second rotating shaft, a rotation driving mechanism, a mixing cylinder and a controller, and the two ends of the mixing cylinder are connected with the first rotating shaft and the second rotating shaft through universal mechanisms respectively. According to the three-dimensional motion mixing machine for dry-method electrode powder mixing, when the rotary driving mechanism drives the first rotating shaft and the second rotating shaft to rotate, the universal structure enables the mixing barrel to do compound motion such as translation, rotation and rolling in cycles in the space, electrode powder does three-dimensional compound motion in the axial direction, the radial direction and the annular direction along with the mixing barrel, and therefore the electrode powder can be mixed uniformly. Various materials in the mixing barrel are weak in centrifugal force effect in the mixing process, mixing is uniform, mixing dead angles are not prone to forming, the problem that to-be-mixed powder is prone to layering and accumulation is avoided, and the mixing effect of the electrode powder is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery production, in particular to a three-dimensional motion mixing machine for dry-process electrode powder mixing. BACKGROUND

[0002] The dry-process electrode process is a new idea for manufacturing power battery electrode sheets, and the core feature thereof is that no solvent is used to disperse active materials and conductive additives, but the active materials, conductive agents and binder powders are directly mixed together, and then the mixture is compounded onto a current collector such as an aluminum foil or a copper foil through pressing or other mechanical methods. The dry-process electrode has the advantages of being more energy-saving, fast and environmentally friendly in the manufacturing process, and can significantly improve the energy density of the battery and is beneficial to prolonging the battery life. However, the dry-process electrode technology also faces some challenges. Since the binder powder is prone to agglomeration and deformation, it leads to subsequent film defects and processing difficulties. In addition, when the specific gravity of the powder to be mixed is greatly different, segregation and stratification phenomena are prone to occur.

[0003] The first prerequisite to ensure that the film is uniformly attached to the current collector is to uniformly mix the active material, conductive agent and binder powder. However, the mixing motion mode of the traditional dry-process electrode powder mixing device is relatively single, and it is easy to form a mixing dead angle, and the powder is stratified and accumulated, and the mixing efficiency is poor. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a three-dimensional motion mixing machine for dry-process electrode powder mixing to solve the technical problem of uneven mixing of the mixing machine in the prior art.

[0005] To achieve the above-mentioned purpose, the application provides a three-dimensional motion mixing machine for dry-process electrode powder mixing, which comprises:

[0006] a rack;

[0007] a first rotating shaft rotatably arranged on the side surface of the rack;

[0008] a second rotating shaft rotatably arranged on the rack, the first rotating shaft and the second rotating shaft being arranged on the same side surface of the rack, and the first rotating shaft and the second rotating shaft being spaced apart;

[0009] a rotary drive mechanism for driving the first rotating shaft and the second rotating shaft to rotate;

[0010] a mixing cylinder connected to the first rotating shaft and the second rotating shaft through a universal mechanism at both ends thereof, the mixing cylinder being used for mixing electrode powder; and

[0011] a controller electrically connected to the rotary drive mechanism.

[0012] Optionally, the universal mechanism comprises:

[0013] U-shaped connecting blocks are provided at the ends of the first or second rotating shaft;

[0014] The connecting shaft is detachably mounted on the U-shaped connecting block; and

[0015] The U-shaped connecting rod is rotatably mounted on the connecting shaft in the middle, and the two sides of the U-shaped connecting rod are rotatably connected to opposite sides of one end of the mixing cylinder.

[0016] Optionally, the connecting shaft has a first screw hole on each of its two ends, the U-shaped connecting block has a first clearance hole on each of its two sides, and the universal joint also includes a first bolt, which is disposed in the first clearance hole and the first screw hole.

[0017] Optionally, the U-shaped connecting rod is provided with a second clearance hole on each side, and the side of the mixing cylinder is provided with two second screw holes corresponding to the two second clearance holes respectively. The universal mechanism also includes a second bolt, which is provided in the second clearance hole and the second screw hole.

[0018] Optionally, a connecting seat is provided on the outer side of the middle part of the U-shaped connecting rod. The connecting seat is provided with a third clearance hole adapted to the connecting shaft, and the connecting seat is rotatably sleeved on the connecting shaft.

[0019] Optionally, the two U-shaped connecting rods are arranged perpendicular to each other.

[0020] Optionally, the rotary drive mechanism includes:

[0021] A rotary motor, fixed to the frame and connected to a first or second rotating shaft;

[0022] Two rotating wheels are respectively mounted on the first rotating shaft and the second rotating shaft; and

[0023] A belt connects two pulleys.

[0024] Optionally, a support base is provided on the side of the frame, and the rotary motor is mounted on the support base.

[0025] Optionally, the controller is located on the side of the rack and includes a touch panel and control buttons.

[0026] Optionally, the rack includes:

[0027] Mounting plate, vertically installed; and

[0028] Multiple support legs are evenly distributed along the bottom of the mounting plate.

[0029] The beneficial effects of the three-dimensional motion mixer for dry electrode powder mixing provided in this application are as follows: Compared with the prior art, the three-dimensional motion mixer of this application includes a frame, a first rotating shaft, a second rotating shaft, a rotary drive mechanism, a mixing cylinder, and a controller. The two ends of the mixing cylinder are connected to the first rotating shaft and the second rotating shaft through universal joints, respectively. When the rotary drive mechanism drives the first rotating shaft and the second rotating shaft to rotate, the universal joint structure causes the mixing cylinder to perform a compound motion such as translation, rotation, and tumbling in space. The electrode powder then performs a three-dimensional compound motion in the mixing cylinder in the axial, radial, and circumferential directions. The various materials in the mixing cylinder are less affected by centrifugal force during the mixing process, resulting in more uniform mixing and less likelihood of forming mixing dead zones. This avoids the problem of stratification and accumulation of the powder to be mixed, thus improving the mixing effect of the electrode powder. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 A schematic diagram of the three-dimensional motion mixer for dry electrode powder mixing provided in the embodiments of this application. Figure 1 ;

[0032] Figure 2 A schematic diagram of the three-dimensional motion mixer for dry electrode powder mixing provided in the embodiments of this application. Figure 2 ;

[0033] Figure 3 This is an exploded structural diagram of a three-dimensional motion mixer for dry electrode powder mixing provided in an embodiment of this application.

[0034] Figure 4 A three-dimensional structural diagram of the universal joint mechanism of the three-dimensional motion mixer for dry electrode powder mixing provided in the embodiments of this application;

[0035] Figure 5 This is a three-dimensional structural diagram of the rotary drive mechanism of the three-dimensional motion mixer for dry electrode powder mixing provided in the embodiments of this application.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Frame; 110. Mounting plate; 120. Support leg; 2. First rotating shaft; 3. Second rotating shaft; 4. Rotary drive mechanism; 410. Rotary motor; 420. Rotary wheel; 430. Belt; 5. Mixing drum; 6. Universal joint mechanism; 610. U-shaped connecting block; 620. Connecting shaft; 630. U-shaped connecting rod; 640. First bolt; 650. Second bolt; 660. Connecting seat; 7. Controller; 8. Support seat. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0039] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0042] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0044] The embodiments of this application provide a three-dimensional motion mixer for dry electrode powder mixing, please refer to the following: Figures 1 to 5 The three-dimensional motion mixer includes a frame 1, a first rotating shaft 2, a second rotating shaft 3, a rotary drive mechanism 4, a mixing cylinder 5, and a controller 7. The first rotating shaft 2 is rotatably mounted on the side of the frame 1, and the second rotating shaft 3 is rotatably mounted on the frame 1. The first rotating shaft 2 and the second rotating shaft 3 are mounted on the same side of the frame 1, and the first rotating shaft 2 and the second rotating shaft 3 are spaced apart. The rotary drive mechanism 4 is used to drive the first rotating shaft 2 and the second rotating shaft 3 to rotate. The two ends of the mixing cylinder 5 are respectively connected to the first rotating shaft 2 and the second rotating shaft 3 through universal joints 6. The mixing cylinder 5 is used to mix electrode powder. The controller 7 is electrically connected to the rotary drive mechanism 4.

[0045] In this embodiment, the three-dimensional motion mixer includes a frame 1, a first rotating shaft 2, a second rotating shaft 3, a rotary drive mechanism 4, a mixing cylinder 5, and a controller 7. The two ends of the mixing cylinder 5 are connected to the first rotating shaft 2 and the second rotating shaft 3 respectively through universal joints 6. When the rotary drive mechanism 4 drives the first rotating shaft 2 and the second rotating shaft 3 to rotate, the universal joints cause the mixing cylinder 5 to perform a complex motion such as translation, rotation, and tumbling in space. The electrode powder then performs a three-dimensional complex motion in the mixing cylinder 5 in the axial, radial, and circumferential directions. The various materials in the mixing cylinder 5 are less affected by centrifugal force during the mixing process, resulting in more uniform mixing and less likelihood of forming mixing dead zones. This avoids the problem of stratification and accumulation of the powder to be mixed, thus improving the mixing effect of the electrode powder.

[0046] In one embodiment, see Figure 4The universal mechanism 6 includes a U-shaped connecting block 610, a connecting shaft 620, and a U-shaped connecting rod 630. The U-shaped connecting block 610 is disposed at the end of the first rotating shaft 2 or the second rotating shaft 3, and the connecting shaft 620 is detachably disposed on the U-shaped connecting block 610. The middle part of the U-shaped connecting rod 630 is rotatably disposed on the connecting shaft 620, and the two sides of the U-shaped connecting rod 630 are rotatably connected to the opposite sides of one end of the mixing cylinder 5.

[0047] With the above settings, the mixing cylinder 5 is universally connected to the first rotating shaft 2 and the second rotating shaft 3, so that the mixing cylinder 5 can repeatedly perform composite movements such as translation, rotation and tumbling in space.

[0048] In one embodiment, the connecting shaft 620 has first screw holes on both ends, the U-shaped connecting block 610 has first clearance holes on both sides, and the universal mechanism 6 also includes a first bolt 640, which is disposed in the first clearance hole and the first screw hole.

[0049] The above settings enable a detachable connection between the connecting shaft 620 and the U-shaped connecting block 610, facilitating the installation and removal of the U-shaped connecting rod 630.

[0050] In one embodiment, the U-shaped connecting rod 630 is provided with second clearance holes on both sides, and the mixing cylinder 5 is provided with two second screw holes corresponding to the two second clearance holes respectively. The universal mechanism 6 also includes a second bolt 650, which is disposed in the second clearance holes and the second screw holes.

[0051] The above settings enable a detachable connection between the mixing cylinder 5 and the U-shaped connecting rod 630, facilitating the installation and removal of the U-shaped connecting rod 630.

[0052] In one embodiment, see Figure 4 A connecting seat 660 is provided on the outer side of the middle part of the U-shaped connecting rod 630. The connecting seat 660 is provided with a third clearance hole that adapts to the connecting shaft 620. The connecting seat 660 is rotatably sleeved on the connecting shaft 620.

[0053] In one embodiment, please refer to [the relevant documentation / reference]. Figure 1 and Figure 2 Two U-shaped connecting rods 630 are set perpendicular to each other. When the first rotating shaft 2 and the second rotating shaft 3 rotate synchronously, they can drive the three-dimensional movement of the mixing cylinder 5 to realize the mixing function.

[0054] In one embodiment, please refer to [the relevant documentation / reference]. Figure 4 and Figure 5The rotary drive mechanism 4 includes a rotary motor 410, two pulleys 420, and a belt 430. The rotary motor 410 is fixed to the frame 1 and connected to either the first rotating shaft 2 or the second rotating shaft 3. The two pulleys 420 are respectively mounted on the first rotating shaft 2 and the second rotating shaft 3, and the belt 430 connects the two pulleys 420. In this way, the synchronous rotation of the first rotating shaft 2 and the second rotating shaft 3 is achieved by a single rotary motor 410.

[0055] In one embodiment, see Figure 3 A support base 8 is provided on the side of the frame 1. The rotary motor 410 is mounted on the support base 8. The support base 8 provides an installation position for the rotary motor 410, which facilitates the fixing of the rotary motor 410.

[0056] In one embodiment, please refer to [the relevant documentation / reference]. Figure 1 and Figure 3 The controller 7 is located on the side of the frame 1. The controller 7 includes a touch panel and control buttons, and offers a variety of control methods to reduce the difficulty of operation for staff.

[0057] In one embodiment, please refer to [the relevant documentation / reference]. Figures 1 to 3 The frame 1 includes a mounting plate 110 and multiple legs 120. The mounting plate 110 is vertically arranged, and the multiple legs 120 are evenly distributed along the bottom of the mounting plate 110 to improve the stability of the frame 1.

[0058] In other embodiments, a stirring mechanism is provided inside the mixing cylinder 5, which further improves the mixing uniformity and mixing efficiency of the electrode powder.

[0059] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A three-dimensional motion mixer for dry electrode powder mixing, characterized in that, include: frame; The first rotating shaft is rotatably mounted on the side of the frame; The second rotating shaft is rotatably mounted on the frame. The first rotating shaft and the second rotating shaft are mounted on the same side of the frame, and the distance between the first rotating shaft and the second rotating shaft is set. A rotary drive mechanism is used to drive the first rotating shaft and the second rotating shaft to rotate. A mixing cylinder, with its two ends connected to the first rotating shaft and the second rotating shaft respectively via universal joints, is used to mix electrode powder. as well as The controller is electrically connected to the rotary drive mechanism.

2. The three-dimensional motion mixer for dry electrode powder mixing according to claim 1, characterized in that, The universal joint mechanism includes: A U-shaped connecting block is disposed at the end of the first rotating shaft or the second rotating shaft; A connecting shaft is detachably mounted on the U-shaped connecting block; and A U-shaped connecting rod is rotatably mounted on the connecting shaft, and the two sides of the U-shaped connecting rod are rotatably connected to opposite sides of one end of the mixing cylinder.

3. The three-dimensional motion mixer for dry electrode powder mixing according to claim 2, characterized in that, The connecting shaft has a first screw hole on each of its two ends, the U-shaped connecting block has a first clearance hole on each of its two sides, and the universal joint also includes a first bolt, which is disposed in the first clearance hole and the first screw hole.

4. The three-dimensional motion mixer for dry electrode powder mixing according to claim 2, characterized in that, The U-shaped connecting rod is provided with a second clearance hole on each side, and the side of the mixing cylinder is provided with two second screw holes corresponding to the two second clearance holes respectively. The universal mechanism also includes a second bolt, which is provided in the second clearance hole and the second screw hole.

5. The three-dimensional motion mixer for dry electrode powder mixing according to claim 2, characterized in that, A connecting seat is provided on the outer side of the middle part of the U-shaped connecting rod. The connecting seat is provided with a third clearance hole that adapts to the connecting shaft. The connecting seat is rotatably sleeved on the connecting shaft.

6. The three-dimensional motion mixer for dry electrode powder mixing according to claim 2, characterized in that, The two U-shaped connecting rods are arranged perpendicularly to each other.

7. The three-dimensional motion mixer for dry electrode powder mixing according to any one of claims 1-6, characterized in that, The rotary drive mechanism includes: A rotary motor is fixed to the frame and connected to the first rotating shaft or the second rotating shaft; Two rotating wheels are respectively mounted on the first rotating shaft and the second rotating shaft; and A belt connects the two pulleys.

8. The three-dimensional motion mixer for dry electrode powder mixing according to claim 7, characterized in that, A support base is provided on the side of the frame, and the rotary motor is mounted on the support base.

9. The three-dimensional motion mixer for dry electrode powder mixing according to any one of claims 1-6, characterized in that, The controller is located on the side of the rack and includes a touch panel and control buttons.

10. The three-dimensional motion mixer for dry electrode powder mixing according to any one of claims 1-6, characterized in that, The rack includes: Mounting plate, vertically installed; and Multiple support legs are evenly distributed along the bottom of the mounting plate.

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