Efficient slurry mixing device for lithium battery processing

Abstract

The utility model relates to an efficient slurry mixing device for lithium battery processing, which comprises a material box, a mixing cavity is arranged in the material box, the efficient slurry mixing device for lithium battery processing further comprises a filter plate, a driving piece and a material receiving piece, the filter plate is arranged below a discharge port of the mixing cavity and is used for receiving materials discharged from the discharge port of the mixing cavity, and the driving piece is arranged on the material receiving piece. The driving piece is used for driving the filter plate to do horizontal reciprocating motion; and the material receiving piece is used for receiving the materials filtered by the filter plate. By arranging the filter plate and the driving piece, on one hand, the filter plate is used for filtering slurry generated by mixing in the mixing cavity, impurity particles are filtered out, and the quality of the slurry is improved, and on the other hand, the driving piece is used for driving the filter plate to horizontally reciprocate, and the filtering effect of the filter plate is improved through the back-and-forth shaking effect of the filter plate. The filter plate blockage caused by too thick slurry is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery manufacturing technical field especially relates to a kind of high-efficiency slurry mixing device for lithium battery processing. BACKGROUND

[0002] Lithium battery is a kind of battery using lithium metal or lithium ion as positive and negative material, is one of important energy storage technologies currently widely used in mobile devices, electric vehicles, energy storage systems and other fields, and the manufacture of lithium battery usually includes multiple steps, according to the requirements and performance indexes of battery design, the formula of positive and negative material needs to be formulated, which involves determining the proportion of different materials, the type and amount of additives, etc., to ensure that the finally manufactured electrode has good electrochemical performance and cycle stability, and one of the key steps is the processing of lithium battery positive and negative material slurry. When lithium battery positive and negative material is mixed, slurry mixing equipment is used to add various materials and additives into the mixing cavity of the slurry mixing equipment, and the slurry is mixed by stirring equipment. However, some impurity particles that cannot be mixed will be in the existing slurry mixing equipment during the mixing process of materials, which affects the quality of later use. SUMMARY

[0003] Therefore, in view of the technical problem that some impurity particles that cannot be mixed will be in the existing slurry mixing equipment during the mixing process of materials, which affects the quality of later use, the utility model provides a kind of high-efficiency slurry mixing device for lithium battery processing.

[0004] The utility model provides a kind of high-efficiency slurry mixing device for lithium battery processing, it includes material box, be provided with mixing cavity in material box, the high-efficiency slurry mixing device for lithium battery processing further includes filter plate, drive part and receiving piece, filter plate is arranged in the position below the discharge port of mixing cavity and is used to receive the material discharged from the discharge port of mixing cavity, and the drive part is used to drive filter plate to move horizontally reciprocatingly;The receiving piece is used to receive the material filtered by filter plate.

[0005] The utility model sets up filter plate and drive part, on the one hand, the slurry generated in mixing cavity is filtered by filter plate, and the impurity particles are filtered out, so as to improve the quality of slurry, on the other hand, filter plate is driven to move horizontally reciprocatingly by drive part, and the filtering effect of filter plate is improved by the back-and-forth shaking effect of filter plate, so as to avoid the blockage of filter plate caused by too thick slurry.

[0006] As a further improvement of the above-mentioned scheme of the utility model, a filter cavity is further arranged in the material box below the mixing cavity, and the filter plate, the drive part and the receiving piece are all arranged in the filter cavity. The filter plate, the drive part and the receiving piece are all arranged in the material box, so as to avoid the influence of external environment on the quality of slurry.

[0007] As a further improvement of the above-mentioned scheme of the utility model, the filter plate is slidably connected with a baffle on both sides, the bottom of the two baffles is connected with a flow guide plate, the two flow guide plates are obliquely arranged to make the bottom ends of the two flow guide plates close to each other to form a flow guide channel between the two flow guide plates, and the two flow guide plates are connected with the inner wall of the material box through a connecting plate. By arranging the baffle and the flow guide plate, on the one hand, the installation of the filter plate is facilitated, and on the other hand, the slurry filtered by the filter plate can be introduced into the receiving member.

[0008] As a further improvement of the above-mentioned scheme of the utility model, the driving member comprises a first motor, a cam and a connecting rod, the first motor is installed on the inner wall of the material box, the cam is connected with the output end of the first motor, one end of the cam away from the first motor is rotatably connected with one end of the connecting rod, and the other end of the connecting rod is rotatably connected with one end of the filter plate. The first motor drives the cam to rotate in a certain direction, and the cam drives the filter plate to move horizontally and reciprocally through the connecting rod.

[0009] As a further improvement of the above-mentioned scheme of the utility model, the receiving member comprises a conveying pipe, the conveying pipe is arranged below the two flow guide plates, a feeding port is formed in the top of the conveying pipe, the projection of the bottom end of the two flow guide plates on the conveying pipe is located in the feeding port, and one end of the conveying pipe extends out of the material box and is provided with a discharging port at the end thereof located outside the material box.

[0010] As a further improvement of the above-mentioned scheme of the utility model, the receiving member further comprises a second motor and a conveying screw, the second motor is installed on the material box and the output end thereof is drivingly connected with one end of the conveying screw, and the conveying screw is coaxially arranged in the conveying pipe and used for conveying materials to the discharging port. Through the rotation of the conveying screw, the lithium battery slurry is guided out of the conveying pipe, the output speed is improved, and the convenience is higher.

[0011] As a further improvement of the above-mentioned scheme of the utility model, the high-efficiency slurry mixing device for lithium battery processing further comprises a stirring member, the stirring member comprises a third motor, a first stirring rod and a second stirring rod, the third motor is installed on the material box, the first stirring rod and the second stirring rod are vertically arranged in the mixing cavity, one end of the first stirring rod is drivingly connected with the output end of the third motor, one end of the second stirring rod is rotatably connected with the inner wall of the material box, a first gear and a second gear are respectively arranged on the first stirring rod and the second stirring rod and meshed with each other, and a plurality of first stirring blades and a plurality of second stirring blades are respectively arranged on the first stirring rod and the second stirring rod. Through the rotation of the first stirring rod driven by the third motor, due to the meshing relationship between the first gear and the second gear, the second stirring rod also rotates and the rotation direction is opposite to that of the first stirring rod, and the plurality of first stirring blades and the plurality of second stirring blades can more comprehensively mix the lithium battery slurry raw materials, and the mixing effect is better.

[0012] As a further improvement of the above-mentioned scheme of the present application, the first stirring blade and the second stirring blade are staggered arranged to avoid mutual collision and affect the use effect.

[0013] As a further improvement of the above-mentioned scheme of the present application, the inner wall of the mixing cavity is provided with a heating plate, and the outer wall of the material box is provided with a vibrator. The inner wall of the mixing cavity is heated by the heating plate to maintain the fluidity of the slurry, facilitate cleaning, and shake off the slurry on the inner wall of the mixing cavity by the vibration of the vibrator to avoid wall hanging and concentrate the slurry at the bottom of the mixing cavity.

[0014] As a further improvement of the above-mentioned scheme of the present application, the top end of the material box is provided with a feeding hopper for feeding the mixing cavity, and the discharge port of the mixing cavity is connected with a discharge pipe provided with a discharge valve.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] The present application sets up filter plate and driving part, on one hand, the filter plate filters the slurry generated in the mixing cavity to improve the quality of the slurry, on the other hand, the driving part drives the filter plate to move horizontally and reciprocally, and the filter plate shakes back and forth to improve the filtering effect of the filter plate and avoid the filter plate from being blocked by the too thick slurry. The present application has simple structure and can better meet the use demand of the user and bring convenience to the user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 A structure diagram of the efficient slurry mixing device for lithium battery processing is provided for the embodiment of the present application;

[0018] Fig. 2 A sectional view of the efficient slurry mixing device for lithium battery processing is provided for the embodiment of the present application;

[0019] Fig. 3 A connection structure diagram of the driving part and the filter plate in the efficient slurry mixing device for lithium battery processing is provided for the embodiment of the present application.

[0020] Fig. 1, material box; 2, filter plate; 3, baffle; 4, guide plate; 5, connecting plate; 6, first motor; 7, cam; 8, connecting rod; 9, conveying pipe; 10, feeding port; 11, discharge port; 12, second motor; 13, conveying screw; 14, third motor; 15, first stirring rod; 16, second stirring rod; 17, first gear; 18, second gear; 19, first stirring blade; 20, second stirring blade; 21, heating plate; 22, discharge valve; 23, feeding hopper; 24, vibrator; 25, supporting leg; 26, discharge pipe. DETAILED DESCRIPTION

[0021] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below in connection with specific embodiments. However, the present application can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present application to those skilled in the art.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application.

[0023] Referring to Figs. 1-3 The present embodiment proposes a high-efficiency slurry mixing device for lithium battery processing, which comprises a material box 1, a filter plate 2, a driving member and a material receiving member, and can further comprise a stirring member.

[0024] The material box 1 is provided with a mixing chamber and a filtering chamber arranged in an up-down manner, the mixing chamber bottom is provided with a discharge port 11 communicated with the filtering chamber, the discharge port 11 is connected with a discharge pipe 26, and the discharge pipe 26 is provided with an electrically-controlled discharge valve 22. In the present embodiment, in order to ensure that the material in the mixing chamber can completely enter into the filtering chamber, the mixing chamber bottom is provided in a funnel shape. In order to facilitate adding various materials into the mixing chamber, the material box 1 top is provided with a material inlet hopper 23 communicated with the mixing chamber. Meanwhile, the inner wall of the mixing chamber in the present embodiment is provided with a heating plate 21, the slurry is heated and kept warm by the heating plate 21, and the flowability is maintained. The number and arrangement position of the heating plate 21 are not specifically limited, and can be reasonably designed according to the volume of the mixing chamber. Meanwhile, in order to avoid the slurry sticking to the wall, a vibrator 24 is installed on the outer wall of the mixing chamber of the material box 1, and the material adhered to the inner wall of the mixing chamber is vibrated off by the vibration of the vibrator 24. The four corners of the material box 1 bottom are all fixed with supporting legs 25, and the material box 1 is fixedly placed on the ground through the four supporting legs 25.

[0025] The stirring member is used for stirring and mixing the material in the mixing cavity to form the slurry. In the embodiment, the stirring member comprises a third motor 14, a first stirring rod 15 and a second stirring rod 16. The third motor 14 is mounted at the top end of the material box 1, the first stirring rod 15 and the second stirring rod 16 are vertically arranged in the mixing cavity, the top end of the first stirring rod 15 is in transmission connection with the output end of the third motor 14, and the top end of the second stirring rod 16 is in rotation connection with the inner wall of the material box 1, the first stirring rod 15 and the second stirring rod 16 are respectively provided with a first gear 17 and a second gear 18 which are in meshing, and the first stirring rod 15 and the second stirring rod 16 are respectively provided with a plurality of first stirring blades 19 and a plurality of second stirring blades 20. The third motor 14 drives the first stirring rod 15 to rotate, and since the first gear 17 and the second gear 18 are in meshing, the rotation of the first stirring rod 15 can drive the second stirring rod 16 to rotate, the first stirring rod 15 drives the plurality of first stirring blades 19 to stir the material in the mixing cavity, and at the same time, the second stirring rod 16 drives the plurality of second stirring blades 20 to stir the material in the mixing cavity, in order to avoid the collision between the first stirring blades 19 and the second stirring blades 20, the plurality of first stirring blades 19 and the plurality of second stirring blades 20 are arranged staggeredly.

[0026] The filter plate 2 is arranged in the filtering cavity and is used for receiving the slurry discharged from the discharge pipe 26. The filter plate 2 is a plate body structure with filter holes, in the embodiment, the filter plate 2 adopts a flat plate structure with filter holes, of course, in other embodiments, the filter plate 2 can also be a V-shaped plate with filter holes or a plate body structure with other structures. In order to facilitate the installation of the filter plate 2, the baffle 3 is slidably connected to both sides of the filter plate 2 in the length direction, and the guide plate 4 is connected to the bottom of each baffle 3, and the two guide plates 4 are connected to the inner wall of the material box 1 through the connecting plate 5 on the sides away from each other. In order to facilitate the collection of the slurry filtered by the filter plate 2, in the embodiment, the two guide plates 4 are arranged obliquely so that the bottom ends of the two guide plates 4 are close to each other, and a guide channel with a width gradually decreasing from top to bottom is formed between the two guide plates 4, and after the slurry is filtered by the filter plate 2, it falls into the guide channel and flows downward along the guide channel.

[0027] The driving member is used for driving the filter plate 2 to move horizontally and reciprocally. The driving member can directly adopt the form of a combination of a pneumatic cylinder or a servo motor and a lead screw. In the embodiment, the driving member comprises a first motor 6, a cam 7 and a connecting rod 8. The first motor 6 is mounted on the inner wall of the material box 1, the cam 7 is connected to the output end of the first motor 6, one end of the cam 7 away from the first motor 6 is rotationally connected to one end of the connecting rod 8, and the other end of the connecting rod 8 is rotationally connected to one end of the filter plate 2. The first motor 6 drives the cam 7 to rotate, and the cam 7 drives the filter plate 2 to move horizontally and reciprocally between the two baffles 3 through the connecting rod 8.

[0028] The material receiving member is used for receiving the slurry flowing from the guide channel. In the embodiment, the material receiving member comprises a conveying pipe 9, a second motor 12 and a conveying screw 13. The conveying pipe 9 is arranged below the two guide plates 4, and the top of the conveying pipe 9 is provided with an inlet 10. In order to ensure that the slurry in the guide channel can completely fall into the inlet 10, the projection of the bottom end of the two guide plates 4 on the conveying pipe 9 is located in the inlet 10. One end of the conveying pipe 9 extends out of the material box 1, and the end of the conveying pipe 9 located outside the material box 1 is provided with an outlet 11. The second motor 12 is installed on the material box 1, and the output end of the second motor 12 is in transmission connection with one end of the conveying screw 13. The conveying screw 13 is coaxially arranged in the conveying pipe 9 and is used for conveying the material to the outlet 11.

[0029] The high-efficiency slurry mixing device for lithium battery processing has the above structure, and when the slurry mixing operation is performed, the raw materials are poured into the mixing cavity through the feeding hopper 23, the third motor 14 is started, the first stirring rod 15 and the second stirring rod 16 are relatively rotated under the driving of the third motor 14, and the first stirring blade 19 and the second stirring blade 20 are staggered to comprehensively mix the lithium battery slurry raw materials, so that the mixing effect is better. After mixing is completed, the inner wall of the mixing cavity is heated by the heating plate 21 to maintain the fluidity of the slurry, facilitate cleaning, and the vibration of the vibrator 24 is used to shake off the slurry on the inner wall of the mixing cavity to avoid wall sticking and concentrate the slurry at the bottom of the mixing cavity. Then the discharge valve 22 is opened, the slurry falls into the filter plate 2 from the discharge pipe 26, the first motor 6 is started, the filter plate 2 moves horizontally left and right under the driving of the cam 7 and the connecting rod 8, the shaking effect of the filter plate 2 improves the filtering effect of the filter plate 2, and at the same time, the filter plate 2 can also prevent the slurry from being too thick to cause blockage. The filtered slurry flows into the conveying pipe 9 along the two guide plates 4, the second motor 12 is started to drive the conveying screw 13 to rotate, the slurry is conveyed to the outlet 11, and the slurry is collected at the outlet 11. The particulate impurities remaining on the filter plate 2 can be cleaned after the slurry mixing is completed.

[0030] It should be noted that when an element is referred to as being "mounted on" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or there can be an intervening element. When an element is referred to as being "fixed on" another element, it can be directly fixed on the other element or there can be an intervening element.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0032] Each technical feature of the above-described embodiments can be combined with any other technical feature, and for the sake of brevity, not all possible combinations are described, but it is understood that each technical feature described above can be combined with any other technical feature described above, unless the combination is mutually exclusive.

[0033] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A high-efficiency slurry mixing device for lithium battery processing, comprising a material box (1), a mixing cavity is arranged in the material box (1), characterized in that, The high-efficiency slurry mixing device for lithium battery processing further comprises a filter plate (2), a driving member and a material receiving member, the filter plate (2) is arranged at a position below the discharge port (11) of the mixing cavity and is used for receiving the material discharged from the discharge port (11) of the mixing cavity, the driving member is used for driving the filter plate (2) to move horizontally and reciprocally, and the material receiving member is used for receiving the material filtered by the filter plate (2).

2. The efficient slurry mixing device for lithium battery processing according to claim 1, characterized in that, The driving member comprises a first motor (6), a cam (7) and a connecting rod (8), the first motor (6) is installed on the inner wall of the material box (1), the cam (7) is connected with the output end of the first motor (6), one end of the cam (7) away from the first motor (6) is rotatably connected with one end of the connecting rod (8), and the other end of the connecting rod (8) is rotatably connected with one end of the filter plate (2).

3. The efficient slurry mixing device for lithium battery processing according to claim 1, characterized in that, The material receiving member comprises a conveying pipe (9), the conveying pipe (9) is arranged below the two flow guide plates (4), the top of the conveying pipe (9) is provided with an inlet port (10), the projections of the bottom ends of the two flow guide plates (4) on the conveying pipe (9) are located in the inlet port (10), one end of the conveying pipe (9) extends out of the material box (1) and is provided with a discharge port (11) at the end thereof located outside the material box (1).

4. The high-efficiency slurry mixing device for lithium battery processing according to claim 3, characterized in that, The material receiving member further comprises a second motor (12) and a conveying screw (13), the second motor (12) is installed on the material box (1) and the output end thereof is drivingly connected with one end of the conveying screw (13), and the conveying screw (13) is coaxially arranged in the conveying pipe (9) and is used for conveying the material to the discharge port (11).

5. The efficient slurry mixing device for lithium battery processing according to claim 1, characterized in that, The high-efficiency slurry mixing device for lithium battery processing further comprises a stirring member, the stirring member comprises a third motor (14), a first stirring rod (15) and a second stirring rod (16), the third motor (14) is installed on the material box (1), the first stirring rod (15) and the second stirring rod (16) are vertically arranged in the mixing cavity, one end of the first stirring rod (15) is drivingly connected with the output end of the third motor (14), one end of the second stirring rod (16) is rotatably connected with the inner wall of the material box (1), a first gear (17) and a second gear (18) are respectively installed on the first stirring rod (15) and the second stirring rod (16) and are engaged with each other, and a plurality of first stirring blades (19) and a plurality of second stirring blades (20) are respectively installed on the first stirring rod (15) and the second stirring rod (16).

6. The efficient slurry mixing device for lithium battery processing according to claim 5, characterized in that, The first stirring blades (19) and the second stirring blades (20) are arranged alternately.

7. The efficient slurry mixing device for lithium battery processing according to claim 1, characterized in that, A heating plate (21) is installed on the inner wall of the mixing cavity, and a vibrator (24) is installed on the outer wall of the material box (1).

8. The efficient slurry mixing device for lithium battery processing according to claim 1, characterized in that, The material box (1) is provided with a feeding hopper (23) at the top end for feeding into the mixing cavity, and a discharge pipe (26) is connected to the discharge port (11) of the mixing cavity, and a discharge valve (22) is arranged on the discharge pipe (26).

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