Stirring device for homogenizing and mixing secondary battery

Abstract

The utility model relates to a stirring device for homogenizing and mixing a secondary battery, and belongs to the technical field of lithium battery production. Comprising a stirring box; the movable plate is movably arranged in the stirring box and divides the interior of the stirring box into a first cavity; the filter screen is arranged in the first cavity and divides the first cavity into a first sub-cavity and a second sub-cavity; the stirring mechanism is positioned in the first sub-chamber; the auxiliary filtering mechanism is mounted on the stirring box and is used for driving the movable plate to move, so that homogenate raw materials are transferred between the first sub-chamber and the second sub-chamber through the filter screen. According to the homogenizer, homogenate raw materials can be mixed and stirred in the stirring box and can also be filtered, and the processing flow is convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of lithium battery production, in particular to a stirring device for uniform slurry mixing of a secondary battery. BACKGROUND

[0002] As the heart of an electric vehicle, the development of a secondary battery plays a key role in the performance of the electric vehicle. In recent years, the new energy vehicle industry in China has developed rapidly, but the cost and cycle life of the secondary battery have become a bottleneck restricting the promotion and popularization of new energy production capacity.

[0003] The manufacturing process of a secondary battery generally comprises four steps of slurry preparation, film coating, assembly and formation. The slurry preparation as a preparation source plays a decisive role in the subsequent film coating and the performance of the final product battery. In the manufacturing process, the battery slurry needs to be fully stirred.

[0004] The uniformity of the uniform slurry of the secondary battery determines the performance of the battery, and therefore the uniform slurry needs to be uniformly stirred. However, in order to avoid uneven stirring of the uniform slurry, the uniform slurry needs to be stirred and mixed before being filtered. The general stirring device only has the function of stirring and is difficult to realize the filtration of the uniform slurry of the secondary battery. After the stirring is completed, other filtering equipment needs to be used to filter the uniform slurry, and therefore the process is complicated. SUMMARY

[0005] Embodiments of the application provide a stirring device for uniform slurry mixing of a secondary battery to solve the defect that the general stirring device only has the function of stirring, is difficult to realize the filtration of the uniform slurry of the secondary battery, and needs to use other filtering equipment to filter the uniform slurry after the stirring is completed, and the processing process is complicated.

[0006] Embodiments of the application provide a stirring device for uniform slurry mixing of a secondary battery, which comprises a stirring box, a movable plate movably arranged in the stirring box and separating the stirring box into a first chamber, a filter screen arranged in the first chamber and separating the first chamber into a first sub-chamber and a second sub-chamber, a stirring mechanism located in the first sub-chamber, and an auxiliary filtering mechanism installed on the stirring box and used to drive the movable plate to move so that the uniform slurry raw material is transferred between the first sub-chamber and the second sub-chamber through the filter screen.

[0007] In some embodiments, the auxiliary filtering mechanism comprises a driver and a first telescopic rod connected with the driver and the movable plate.

[0008] In some embodiments, the auxiliary filtering mechanism further comprises a second telescopic rod, one end of which is connected with the movable plate and the other end of which is connected with the stirring box.

[0009] In some embodiments, the stirring mechanism comprises a motor, which is installed on the top of the stirring box, and the output end of the motor penetrates into the stirring box; a rotating shaft, which is located in the first sub-chamber and connected with the output end of the motor; and stirring rods, which are distributed around the outer periphery of the rotating shaft.

[0010] In some embodiments, the rotating shaft is further connected with a U-shaped scraper, the two ends of the U-shaped scraper are connected with the two ends of the rotating shaft respectively, and the stirring rods on the same side of the rotating shaft are located in the U-shaped scraper, and one end of the stirring rod is connected with the U-shaped scraper, and the U-shaped scraper is in contact with the inner wall of the stirring box and the filter screen respectively.

[0011] In some embodiments, a heating disc is further arranged in the stirring box, the heating disc is arranged in a circular ring, the filter screen is connected with the inner wall of the heating disc, and the U-shaped scraper is further in contact with the top of the heating disc.

[0012] In some embodiments, a feeding hopper and a discharging hopper are arranged on the stirring box, the feeding hopper is arranged on the top of the stirring box, and a sealing cover is arranged on the feeding hopper, the discharging hopper is connected with the side wall of the stirring box and arranged on one side of the filter screen, and a valve is arranged on the discharging hopper.

[0013] In some embodiments, a ventilation pipe is connected with the top of the stirring box.

[0014] In some embodiments, an air filter screen is arranged in the ventilation pipe.

[0015] In some embodiments, a pressure sensor is arranged at the bottom of the stirring box, a display screen is arranged on the stirring box, and the pressure sensor is signal connected with the display screen.

[0016] The technical scheme provided in the application has the following beneficial effects:

[0017] The application provides a stirring device for homogenate mixing of secondary batteries. In use, the homogenate raw materials added into the stirring box are mixed and stirred by the stirring mechanism, and after a period of stirring, the mixed homogenate raw materials are circulated through the filter screen by the auxiliary filtering mechanism. After reciprocating filtration for multiple times, the homogenate raw materials are effectively filtered, so that the homogenate raw materials can be mixed and stirred and filtered in the stirring box, and the processing procedure is convenient. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0019] Figure 1 A schematic view provided for the embodiment of the present application;

[0020] Figure 2 A sectional view provided for the embodiment of the present application;

[0021] Figure 3 A schematic view provided for the embodiment of the present application, showing the stirring mechanism;

[0022] Figure 4 A schematic view provided for the embodiment of the present application, showing the heating disc and the filter screen;

[0023] Figure 5 A schematic view provided for the embodiment of the present application, showing the auxiliary filtering mechanism;

[0024] Reference signs:

[0025] 1, stirring box; 10, first chamber; 11, second chamber; 12, pressure sensor; 13, display screen; 14, controller; 15, bottom plate; 2, movable plate; 3, filter screen; 40, driver; 41, first telescopic rod; 42, second telescopic rod; 50, motor; 51, rotating shaft; 52, stirring rod; 53, U-shaped scraper; 6, heating disc; 7, feeding hopper; 70, sealing cover; 8, discharging hopper; 80, valve; 9, air pipe; 90, air filter screen. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0027] The embodiments of the present application provide a stirring device for uniform slurry mixing of secondary batteries, which can solve the defect that the general stirring device only has the function of stirring and is difficult to realize the filtering of the uniform slurry of the secondary batteries, and the processed flow is complicated.

[0028] Reference should be made to Figures 1 to 5As shown, the embodiment of the application provides a stirring device for secondary battery homogenate mixing, which comprises a stirring box 1, a movable plate 2, a filter screen 3, a stirring mechanism and an auxiliary filtering mechanism. The stirring box 1 is in a cylindrical shape, and a bottom plate 15 is arranged at the bottom of the stirring box 1. The movable plate 2 is movably arranged in the stirring box 1 and divides the stirring box 1 into a first chamber 10 and a second chamber 11. The filter screen 3 is arranged in the first chamber 10 and divides the first chamber 10 into a first sub-chamber and a second sub-chamber. The stirring mechanism is arranged in the first sub-chamber. The auxiliary filtering mechanism is arranged on the stirring box 1 and is used to drive the movable plate 2 to move, so that the homogenate raw material is transferred between the first sub-chamber and the second sub-chamber through the filter screen 3.

[0029] In the application, the auxiliary filtering mechanism is arranged in the second chamber 11. After the homogenate raw material enters the first sub-chamber, the stirring mechanism is used to mix the homogenate raw material first. After a certain time of stirring, the auxiliary filtering mechanism drives the movable plate 2 to move downward, the first sub-chamber becomes larger, and the second chamber 11 becomes smaller. After the movable plate 2 moves, the homogenate raw material is transferred to the second sub-chamber through the filter screen 3 under the action of the pressure difference and stays on the top of the movable plate 2, so that the filtering of the homogenate can be realized. After the homogenate is completely filtered, the auxiliary filtering mechanism is further used to drive the movable plate 2 to move, so that the raw material on the top of the movable plate 2 is pressed through the filter screen 3. The above operation is repeated, so that the homogenate raw material can be mixed more uniformly, and the stirring and filtering operations can be simultaneously completed in the stirring box 1, which is very convenient.

[0030] In the application, a pressure sensor 12 is arranged at the bottom of the stirring box 1, a display screen 13 is arranged on the stirring box 1, and the pressure sensor 12 is signal connected with the display screen 13. The pressure sensor 12 can weigh the dosage of the homogenate raw material added in the stirring box 1, so that the different raw materials can be accurately added according to the proportion, the mixing homogenate proportion is more scientific, and the pressure value detected by the pressure sensor 12 can be displayed on the display screen 13 during the weighing, so that the display screen 13 is convenient to view.

[0031] In the application, the auxiliary filtering mechanism comprises a driver 40 and a first telescopic rod 41. The first telescopic rod 41 is connected with the driver 40 and the movable plate 2. The driver 40 is arranged on the bottom wall of the stirring box 1. The driver 40 provides power for the first telescopic rod 41, and the first telescopic rod 41 drives the movable plate 2 to move up and down. A controller 14 is further arranged on the stirring box 1. The operation of the driver 40 is adjusted through the controller 14, which is intelligent operation and convenient and fast.

[0032] In the application, the auxiliary filtering mechanism further comprises a second telescopic rod 42, one end of which is connected with the movable plate 2 and the other end of which is connected with the stirring box 1. The second telescopic rod 42 is arranged in at least four around the first telescopic rod 41, and provides higher stability for the movable plate 2 when the movable plate 2 moves.

[0033] In other application embodiments, the auxiliary filtering mechanism can also be provided as an air pressure regulator and an air pipe, the air pipe being communicated with the second chamber 11, and the air pressure regulator being communicated with the air pipe and being used for providing negative pressure or positive pressure for the second chamber 11, so that a pressure difference is generated in the second chamber 11 to drive the movable plate 2 to lift or descend. Alternatively, the auxiliary adjusting mechanism comprises two air pressure regulators and air pipes, the two air pressure regulators being arranged in the first chamber 10 and the second chamber 11 on the upper and lower sides of the movable plate 2 respectively and being used for providing positive pressure and negative pressure respectively, so that the pressure difference in the second chamber 11 can be adjusted to drive the movable plate 2 to move.

[0034] In the application, the stirring mechanism comprises a motor 50, a rotating shaft 51 and stirring rods 52, the motor 50 being installed on the top of the stirring box 1 and the output end of the motor 50 penetrating into the stirring box 1, the rotating shaft 51 being located in the first sub-chamber and being connected with the output end of the motor 50, and the stirring rods 52 being distributed around the outer periphery of the rotating shaft 51. The motor 50 is further signal connected with the controller 14, the motor 50 being started through the controller 14, and the rotation of the output end of the motor 50 can drive the rotating shaft 51 and the stirring rods 52 to rotate, thereby effectively mixing the homogenate raw materials.

[0035] In the application, the stirring box 1 is further connected with an air pipe 9 on the top. In the process of stirring and filtering the homogenate raw materials, the air pipe 9 can introduce a certain amount of gas into the stirring box 1, the gas forming bubbles in the homogenate raw materials and rising, and the homogenate raw materials and the gas bubbles having violent relative movement in the process, thereby strengthening the stirring effect of the homogenate raw materials. In addition, an air filter screen 90 is arranged in the air pipe 9 to avoid impurities entering the stirring box 1.

[0036] In order to avoid the homogenate raw materials adhering to the inner wall of the stirring box 1 and the filter screen 3, a U-shaped scraper 53 is further connected with the rotating shaft 51, both ends of the U-shaped scraper 53 being connected with both ends of the rotating shaft 51, and the stirring rods 52 on the same side of the rotating shaft 51 being located in the U-shaped scraper 53, one end of the stirring rod 52 being connected with the U-shaped scraper 53, and the U-shaped scraper 53 being in contact with the inner wall of the stirring box 1 and the filter screen 3. When the rotating shaft 51 rotates, the U-shaped scraper 53 also rotates, and the U-shaped scraper 53 is in contact with the inner wall of the stirring box 1 and the filter screen 3 to clean the adhered homogenate raw materials and avoid overheating and solidification.

[0037] In the application, the heating disc 6 is arranged in the stirring box 1, the heating disc 6 is in the form of a ring, the heating disc 6 is fixed to the inner wall of the stirring box 1, and the filter screen 3 is connected to the inner wall of the heating disc 6. The heating disc 6 can heat the homogenate raw material when in use, so that the homogenate raw material is not easy to harden and deposit. In addition, the U-shaped scraper 53 also contacts the top of the heating disc 6, further avoiding that the homogenate raw material is overheated and solidified on the filter screen 3.

[0038] In the application, the feeding hopper 7 and the discharging hopper 8 are arranged on the stirring box 1, the feeding hopper 7 is arranged on the top of the stirring box 1, a sealing cover 70 is arranged on the feeding hopper 7, dust and impurities in the air are prevented from polluting the homogenate entering the inside of the stirring box 1 through the feeding hopper 7, the discharging hopper 8 is connected to the side wall of the stirring box 1 and is arranged on one side of the filter screen 3, a valve 80 is arranged on the discharging hopper 8, the discharging hopper 8 is arranged on the outer wall of the stirring box 1 and penetrates through the stirring box 1 to be connected to the position below the filter screen 3, when the homogenate raw material is filtered through the filter screen 3, the valve 80 is opened, and the slurry material meeting the use requirement and completing the filtration can be effectively discharged from the stirring box 1 through the discharging hopper 8.

[0039] In the description of the present application, it should be noted that the terms "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] It should be noted that in the present application, relational terms such as "first" and "second" and the like are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of additional identical elements in the process, method, article or equipment including the element.

[0041] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. A stirring device for homogenizing and mixing secondary battery slurry, characterized in that, The utility model relates to a homogenate preparation device, including: Stirring box (1); Movable plate (2) is movably arranged in the stirring box (1), and the stirring box (1) is divided into first chamber (10); Filter screen (3) is arranged in the first chamber (10), and the first chamber (10) is divided into first subchamber and second subchamber; Stirring mechanism is located in the first subchamber; Auxiliary filtering mechanism is installed on the stirring box (1), and is used to drive the movable plate (2) to move, so that homogenate raw materials are transferred between the first subchamber and the second subchamber through the filter screen (3).

2. The secondary battery homogenizing mixer according to claim 1, wherein: The auxiliary filtering mechanism includes driver (40) and first telescopic rod (41), and the first telescopic rod (41) is connected with the driver (40) and movable plate (2).

3. The stirring device for homogenizing and mixing a slurry of a secondary battery according to claim 2, wherein: The auxiliary filtering mechanism further includes second telescopic rod (42), one end of the second telescopic rod (42) is connected with the movable plate (2), and the other end is connected with the stirring box (1).

4. The secondary battery homogenizing mixer of claim 1, wherein: The stirring mechanism includes: Motor (50) is installed on the top of the stirring box (1), and the output end of the motor (50) penetrates into the stirring box (1); Rotating shaft (51) is located in the first subchamber, and is connected with the output end of the motor (50); Stirring rod (52) is distributed around the outer periphery of the rotating shaft (51).

5. The secondary battery homogenizing mixer of claim 4, wherein: The rotating shaft (51) is further connected with U-shaped scraper (53), both ends of the U-shaped scraper (53) are connected with both ends of the rotating shaft (51), and on the rotating shaft (51), the stirring rod (52) on the same side is located in the U-shaped scraper (53), and one end of the stirring rod (52) is connected with the U-shaped scraper (53), and the U-shaped scraper (53) is in contact with the inner wall of the stirring box (1) and the filter screen (3) respectively.

6. A stirring device for homogenizing a slurry of a secondary battery as set forth in claim 5, wherein: The stirring box (1) is further provided with heating disc (6), the heating disc (6) is arranged in a circular ring, the filter screen (3) is connected with the inner wall of the heating disc (6), and the U-shaped scraper (53) is further in contact with the top of the heating disc (6).

7. The secondary battery homogenizing mixer of claim 1, wherein: The stirring box (1) is provided with feeding hopper (7) and discharge hopper (8), the feeding hopper (7) is located on the top of the stirring box (1), and the feeding hopper (7) is provided with sealing cover (70), the discharge hopper (8) is connected on the side wall of the stirring box (1) and is located on one side of the filter screen (3), and the discharge hopper (8) is provided with valve (80).

8. The secondary battery homogenizing mixer of claim 1, wherein: The top of the stirring box (1) is connected with air pipe (9).

9. The secondary battery homogenizing mixer of claim 8, wherein: The air pipe (9) is provided with air filter screen (90).

10. The secondary battery homogenizing mixer of claim 1, wherein: The bottom of the stirring box (1) is provided with pressure sensor (12), the stirring box (1) is provided with display screen (13), and the pressure sensor (12) is signal connected with the display screen (13).

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