Lithium battery double-planet homogenate tank simulation device

Abstract

The utility model discloses a lithium battery double-planet homogenate tank simulation device, which comprises a lower base platform, a driving mechanism, a transmission mechanism, an upper supporting platform, a rotary container mechanism and a stirring paddle mechanism, wherein the driving mechanism and the transmission mechanism are arranged on the lower base platform; the rotary container mechanism and the stirring paddle mechanism are arranged on the upper supporting platform; the driving mechanism comprises a driving motor mounted on the lower base platform, the output of the driving motor is connected with a first bevel gear, and a shaft seat block is mounted on the lower base platform; the transmission mechanism comprises a longitudinally arranged transmission shaft and a second bevel gear mounted on the transmission shaft, the lower end of the transmission shaft is rotationally connected with the shaft seat block, and the first bevel gear is meshed with the second bevel gear and is in transmission connection with the second bevel gear; according to the homogenate simulation device provided by the utility model, slurry can revolve while rotating, so that the slurry is mixed in the beaker in the horizontal direction and the vertical direction, and compared with a mode of placing the beaker at a fixed position below a stirring paddle, the homogenate simulation device provided by the utility model can simulate the working procedure of a double-planet homogenate process in actual production to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion battery preparation, and particularly relates to a simulation device for a double-planet homogenizing tank of a lithium battery. Background Art

[0002] A lithium-ion battery is an energy storage device that provides energy by the transfer of lithium ions between the positive and negative electrodes. In recent years, the market share of lithium-ion batteries has been increasing day by day and plays an important role in daily life. The preparation process of lithium-ion batteries includes a homogenizing process, that is, uniformly stirring and mixing a positive electrode material (such as lithium iron phosphate, lithium cobaltate, etc.), a conductive agent (such as carbon black), a binder, and a solvent (NMP) to form a relatively stable slurry. The quality of homogenization will directly affect the performance of lithium-ion batteries, so this process is very important.

[0003] Currently, the mainstream homogenizing equipment is a double-planet homogenizing tank, that is, the stirring paddle rotates while revolving, causing the material to move in the vertical and horizontal directions, so as to achieve an ideal mixing effect in a short time.

[0004] Currently, when exploring the lithium battery homogenization process or preparing experimental slurries for small (generally button batteries) batteries, considering cost and time factors, a stirrer is generally used to connect a paddle rod and insert it into a beaker (figure) to simulate a homogenizing tank for preliminary verification experiments. However, the positions of the stirring paddle of the currently used stirrer and the beaker are fixed, and the revolution and rotation behaviors of the double-planet stirring paddle cannot be accurately simulated. Moreover, due to the small area of the stirring paddle, the shear force provided cannot drive the slurry near the cup wall to move. In the stage where the solvent amount is added less and the slurry solid content is high, the slurry cannot even flow. Therefore, this device cannot simulate the mixing process of the slurry in the double-planet stirring tank during the actual production homogenization stage. Summary of the Utility Model

[0005] Aiming at the problem that the stirring paddle cannot perform a revolution movement when using a stirrer and beaker combination to simulate the lithium battery homogenization process, thus unable to drive the slurry to be uniformly mixed in the horizontal direction and unable to improve the flow of the slurry at the edge of the container wall, the purpose of this application is to provide a simulation device for a double-planet homogenizing tank of a lithium battery.

[0006] To achieve the purpose of the present utility model, the technical solution provided by the present utility model is as follows:

[0007] A simulation device for a double-planet homogenizing tank of a lithium battery, comprising a lower base platform, a driving mechanism and a transmission mechanism installed on the lower base platform, an upper support platform, a rotating container mechanism installed on the upper support platform, and a stirring paddle mechanism;

[0008] The lower end of the upper support platform is connected to the upper end of the lower base platform through a longitudinal beam;

[0009] The driving mechanism includes a driving motor horizontally installed on the lower base platform. The output of the driving motor is connected with a first bevel gear, and a shaft seat block is installed on the lower base platform;

[0010] The transmission mechanism includes a longitudinally arranged transmission shaft and a second bevel gear installed on the transmission shaft. The lower end of the transmission shaft is rotatably connected with the shaft seat block, and the first bevel gear is meshed and transmission-connected with the second bevel gear;

[0011] The rotary container mechanism includes a rotary groove, elastic limit blocks, a container and springs. The rotary groove is slidably connected with the upper end face of the upper support platform. After the upper end of the transmission shaft passes through the through hole on the upper support platform, it is connected to an eccentric position on the bottom end face of the rotary groove; a plurality of elastic clamping mechanisms are arranged along the circumference on the inner side wall of the rotary groove. Each elastic clamping mechanism includes the spring and the elastic limit block. One end of the spring is connected with the inner side wall of the rotary groove, and the other end is connected with the outer end of the elastic limit block. The container is clamped by a plurality of elastic limit blocks;

[0012] The stirring paddle mechanism includes a stirring paddle extending into the container.

[0013] Among them, the number of the elastic clamping mechanisms is 3.

[0014] Among them, a plurality of the elastic clamping mechanisms are arranged at uniform intervals.

[0015] Among them, the contact surface between the elastic limit block and the container 3 is an arc surface.

[0016] Among them, the rotary groove is circular.

[0017] Among them, the number of the longitudinal beams is 4 and they are arranged in a square shape.

[0018] Among them, the upper support platform and the lower base platform are arranged in parallel.

[0019] Among them, the stirring paddle includes a rod part and a blade part connected to the lower end of the rod part.

[0020] Among them, the lower end of the rod part is connected with the output shaft of a longitudinally arranged power motor.

[0021] Among them, the container is a beaker.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] This patent provides a device that can place laboratory beakers and rotate them, equipped with a stirring paddle driven by a motor, to simulate the homogenization process of lithium ions in actual production. This device can carry out a double planetary homogenization process with a beaker as the homogenization container under the condition of using less materials, reducing the R & D economic cost and time cost;

[0024] The simulated homogenization device provided by this patent can make the slurry generate a revolution behavior while rotating, enabling the slurry to be mixed in both horizontal and vertical directions in the beaker. Compared with the method of placing the beaker in a fixed position under the stirring paddle, it can simulate the double planetary homogenization process in actual production to the greatest extent;

[0025] The simulated homogenization device provided by this patent has the advantages of simple structure and convenient assembly and operation. During the working process, the rotation rate can be adjusted to simulate the homogenization process at different revolution speeds, providing great convenience for exploring the homogenization process and optimization. Brief Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the simulation device provided by the embodiment of this application;

[0027] In the figure, driving mechanism 1, transmission mechanism 2, rotating container mechanism 3, upper support platform 4, longitudinal beam 5, lower base platform 6, shaft seat block 7, stirring paddle 8;

[0028] Figure 2 It is a schematic structural diagram of the driving mechanism provided by the embodiment of this application;

[0029] In the figure, driving motor 1-1, first bevel gear 1-2;

[0030] Figure 3 It is a schematic structural diagram of the transmission mechanism provided by the embodiment of this application;

[0031] In the figure, second bevel gear 2-1, transmission shaft 2-2;

[0032] Figure 4 It is a schematic structural diagram of the rotating base provided by the embodiment of this application;

[0033] In the figure, rotating groove 3-1, elastic limit block 3-2, container 3-3, stirring paddle 3-4, spring 3-5. Detailed Description of the Invention

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0036] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. It can refer to direct connection or indirect connection. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0037] As Figures 1 - 4 shown, it is the structural diagram of the embodiment of this application.

[0038] This embodiment provides a simulation device for a lithium battery double planetary homogenizing tank, including a lower base platform 6, a driving mechanism 1 and a transmission mechanism 2 installed on the lower base platform 6, an upper support platform 4, a rotating container mechanism 3 installed on the upper support platform 4, and a stirring paddle mechanism;

[0039] The lower end of the upper support platform 4 is connected to the upper end of the lower base platform 6 through a longitudinal beam 5;

[0040] The driving mechanism 1 includes a driving motor 1-1 horizontally and transversely installed on the lower base platform 6. The output of the driving motor 1-1 is connected to a first bevel gear 1-2 and can drive the first bevel gear 1-2 to rotate. A shaft seat block 7 is installed on the lower base platform 6;

[0041] The transmission mechanism 2 includes a transmission shaft 2-2 arranged vertically and longitudinally and a second bevel gear 2-1 sleeved on the transmission shaft 2-2. The lower end of the transmission shaft 2-2 is rotatably connected to the shaft seat block 7. The first bevel gear 1-2 is meshed with the second bevel gear 2-1 and is transmission-connected. The rotation of the first bevel gear drives the second bevel gear to rotate, thereby driving the transmission shaft to rotate.

[0042] The rotating container mechanism 3 includes a circular rotating groove 3-1, an elastic limit block 3-2, a container 3-3 and a spring 3-5. The rotating groove 3-1 is placed horizontally and is slidably connected to the upper end surface of the upper supporting platform 4. After the upper end of the transmission shaft 2-2 passes through the through hole set on the upper supporting platform 4, it is connected to the eccentric position of the bottom end surface of the rotating groove 3-1, and is driven by the transmission shaft to make eccentric rotation around the transmission shaft; a plurality of elastic clamping mechanisms are arranged along the circumference on the inner side wall of the rotating groove 3-1, and each elastic clamping mechanism includes the spring 3-5 and an elastic limit block 3-2, one end of the spring 3-5 is connected to the inner side wall of the rotating groove 3-1, and the other end is connected to the outer end of the elastic limit block 3-2, the container 3-3 is clamped by a plurality of elastic limit blocks 3-2, and the container 3-3 is arranged concentrically with the rotating groove 3-1;

[0043] The stirring paddle mechanism includes stirring paddles 3-4 extending into the container, and the positions of the stirring paddles 3-4 remain unchanged during operation.

[0044] It should be noted that the container (such as a beaker) is placed vertically in the rotating tank and is concentrically arranged, fixed by an elastic stopper, which can slide in the horizontal direction and can clamp beakers of different sizes with a spring, thereby increasing the scope of application. The blades of the stirring paddle extend into the inner side of the container, do not contact the container wall, and are parallel to the direction of the upper support platform.

[0045] It should be noted that the drive motor starts working after connecting to the power supply, driving the first bevel gear to rotate, and the direction of rotation is perpendicular to the direction of the upper support platform. The first bevel gear drives the second bevel gear motor gear to rotate parallel to the horizontal plane. The rotation of the second bevel gear drives the transmission shaft and the rotating groove above to rotate, and then drives the container inside to rotate, and the center of rotation is inside the container. The rotation of the container simulates the "revolution" behavior of the slurry in the double planetary homogenization process. The blades of the agitator rotate horizontally on the inside of the container, and the position is fixed and does not need to be moved, providing "autorotation" behavior for the slurry in the container.

[0046] Preferably, the number of the elastic clamping mechanisms is 3, or may be 4, or 5, etc.

[0047] Preferably, the plurality of elastic clamping mechanisms are evenly spaced and arranged, which has a better effect.

[0048] Preferably, the contact surface between the elastic limiting block 3-2 and the container 3 is an arc surface, which can improve the clamping effect.

[0049] Preferably, there are 4, 3, 5 or the like longitudinal beams 5 arranged in a square shape.

[0050] Preferably, the upper support platform 4 and the lower base platform 6 are arranged in parallel.

[0051] Preferably, the stirring paddle 3-4 includes a rod portion and a blade portion connected to the lower end of the rod portion.

[0052] Preferably, the lower end of the rod portion is connected to the output shaft of a longitudinally arranged power motor (not shown in the figure). It should be noted that the connection structure between the power motor and the rod and the fixing structure of the power motor both adopt existing technologies. The power motor can be connected to the upper support platform or other components through a fixing rod, as long as the usage requirements are met.

[0053] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery double planetary homogenization tank simulation device, characterized in that: It comprises a lower base platform (6), a driving mechanism (1) and a transmission mechanism (2) mounted on the lower base platform (6), an upper support platform (4), a rotating container mechanism (3) and a stirring paddle mechanism mounted on the upper support platform (4); The lower end of the upper support platform (4) is connected to the upper end of the lower base platform (6) via a longitudinal beam (5); The driving mechanism (1) comprises a driving motor (1-1) installed transversely on the lower base platform (6); the output of the driving motor (1-1) is connected to a first bevel gear (1-2); and a shaft seat block (7) is installed on the lower base platform (6); The transmission mechanism (2) comprises a transmission shaft (2-2) arranged longitudinally and a second bevel gear (2-1) mounted on the transmission shaft (2-2); the lower end of the transmission shaft (2-2) is rotationally connected to the shaft seat block (7); the first bevel gear (1-2) is meshed with and transmission-connected to the second bevel gear (2-1); The rotating container mechanism (3) comprises a rotating groove (3-1), an elastic limit block (3-2), a container (3-3) and a spring (3-5); the rotating groove (3-1) is slidably connected to the upper end surface of the upper support platform (4); the upper end of the transmission shaft (2-2) passes through the through hole on the upper support platform (4) and is connected to the eccentric position of the bottom end surface of the rotating groove (3-1); a plurality of elastic clamping mechanisms are arranged along the circumference on the inner side wall of the rotating groove (3-1); each elastic clamping mechanism comprises the spring (3-5) and the elastic limit block (3-2); one end of the spring (3-5) is connected to the inner side wall of the rotating groove (3-1), and the other end is connected to the outer end of the elastic limit block (3-2); the container (3-3) is clamped by the plurality of elastic limit blocks (3-2); The stirring paddle mechanism comprises a stirring paddle (3-4) extending into the container.

2. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: There are three elastic clamping mechanisms.

3. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: The plurality of elastic clamping mechanisms are evenly spaced.

4. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: The contact surface between the elastic limiting block (3-2) and the container (3-3) is an arc-shaped surface.

5. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: The rotating groove (3-1) is circular.

6. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: There are four longitudinal beams (5) arranged in a square shape.

7. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: The upper support platform (4) and the lower base platform (6) are arranged in parallel.

8. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: The stirring paddle (3-4) comprises a rod portion and a blade portion connected to the lower end of the rod portion.

9. A lithium battery double planetary homogenization tank simulation device according to claim 8, characterized in that: The lower end of the rod is connected to the output shaft of the power motor arranged longitudinally.

10. A lithium battery double planetary homogenization tank simulation device according to claim 1, characterized in that: The container (3-3) is a beaker.

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