Battery slurry magazine structure

Abstract

The utility model belongs to a battery slurry magazine structure in the technical field of lithium ion battery production. The lower portion of the slurry filling component (1) is connected with the upper portion of the slurry magazine (2), the lower portion of the slurry magazine (2) is connected with the upper portion of the slurry extrusion component (3), an extrusion piston (4) is installed in a cylindrical filling cavity of the slurry filling component (1), and a slurry filling opening (5) is formed in the side face of the slurry filling component (1) and communicated with the cylindrical filling cavity. The lower portion of the cylindrical filling cavity is communicated with a cylindrical magazine cavity of the slurry magazine (2), and the cylindrical magazine cavity is communicated with a slurry extrusion opening (6) of the slurry extrusion component (3). The battery slurry magazine structure disclosed by the utility model is simple in structure, ensures that the slurry magazine is not easy to deform in a high-pressure slurry coating process, and can be used for conveniently adding blocky slurry, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium-ion battery production, and more specifically, relates to a battery slurry magazine structure. Background Art

[0002] In the production of lithium-ion batteries, slurry coating is an essential process. Since the solid content of the slurry is very high, a very high pressure needs to be used to extrude the slurry in the magazine to coat the slurry onto the electrode sheet. In the prior art, since the magazine is in the shape of a long and narrow cuboid, it is very easy to cause deformation of the magazine under high pressure. At the same time, since the magazine is in the shape of a long and narrow cuboid, the slurry cannot be continuously loaded into the slurry magazine, and only by replacing the magazine can the material be loaded, resulting in low production efficiency.

[0003] There is a technology with the name of "a battery electrode sheet coating device" and the publication number of "CN219442290U" in the prior art. This technology relates to the field of battery processing devices, and more specifically, is a battery electrode sheet coating device, including a support slide bar and a spraying structure. A plurality of spraying structures are connected to the support slide bar. A limiting groove for restricting rotation is provided on the support slide bar. The plurality of spraying structures are connected to the limiting groove. Positioning blocks are fixedly connected to both ends of the support slide bar. Electric push rods are fixedly connected to the two positioning blocks respectively. The two electric push rods are fixedly connected to both ends of the base. The spraying structure includes a moving frame, a limiting slider fixedly connected to the moving frame. The limiting slider is slidably connected to the limiting groove. A slurry spraying device is fixedly connected to the bottom end of the moving frame. A variable coating structure is connected to the middle of the moving frame. The slurry spraying device includes a connecting block, and a nozzle fixedly connected and communicated with the connecting block. The connecting block is fixedly connected to the bottom end of the moving frame. This device can simultaneously apply slurry at different positions on the aluminum foil.

[0004] However, this technology does not involve the technical problems and technical solutions of this application at all. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is: aiming at the deficiencies of the prior art, to provide a battery slurry magazine structure with a simple structure, which can ensure that the slurry magazine will not easily deform during the high-pressure slurry coating process, and can conveniently add block-shaped slurry to improve production efficiency.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the utility model is:

[0007] The utility model relates to a battery paste magazine structure. The lower part of the paste filling component is connected to the upper part of the paste magazine, and the lower part of the paste magazine is connected to the upper part of the paste extrusion component. An extrusion piston is installed in the cylindrical filling cavity of the paste filling component. A paste filling port is arranged on the side of the paste filling component, and the paste filling port communicates with the cylindrical filling cavity. The lower part of the cylindrical filling cavity communicates with the cylindrical magazine cavity of the paste magazine, and the cylindrical magazine cavity communicates with the paste extrusion port of the paste extrusion component.

[0008] The extrusion piston includes a piston rod and a piston body. The lower end of the piston rod is connected to the piston body, and the upper part of the piston rod is connected to a connection control component.

[0009] The cylindrical filling cavity of the paste filling component and the cylindrical magazine cavity of the paste magazine are both of a cylindrical structure. The diameters of the cylindrical filling cavity and the cylindrical magazine cavity are the same, and the center lines of the cylindrical filling cavity and the cylindrical magazine cavity coincide.

[0010] The piston body of the extrusion piston is arranged to be able to move from the cylindrical filling cavity of the paste filling component into the cylindrical magazine cavity.

[0011] A connecting plate member is arranged on the paste magazine, and a connecting hole is arranged on the connecting plate member. Bolts pass through the connecting hole to fixedly connect the paste magazine to the structural support.

[0012] The paste filling port includes a bottom plate, a first side plate, and a second side plate, and the bottom plate, the first side plate, and the second side plate are of a U-shaped structure.

[0013] The paste extrusion component includes a component body. A component cavity is arranged on the component body, and a paste extrusion port is arranged at the lower part of the component cavity.

[0014] Perforations are arranged on the component body of the paste extrusion component, and bolts pass through the perforations to fixedly connect the component body and the lower part of the paste magazine.

[0015] The paste extrusion port is of a linear structure.

[0016] The connection control component is fixedly installed on the structural support.

[0017] Adopting the technical solution of the utility model, the working principle and beneficial effects are as follows:

[0018] The battery paste magazine structure described in the present utility model, when configured, generally includes three parts: a paste filling component, a paste magazine, and a paste extrusion component. The lower part of the paste filling component is connected to the upper part of the paste magazine, and the lower part of the paste magazine is connected to the upper part of the paste extrusion component. An extrusion piston is installed in the cylindrical filling cavity of the paste filling component. A paste filling port is provided on the side of the paste filling component, and the paste filling port communicates with the cylindrical filling cavity. When feeding is required, the piston is controlled to move to the uppermost position, that is, above the paste filling port, and then paste is put into the cylindrical filling cavity from the paste filling port to achieve the purpose of facilitating feeding of the paste made into a cylindrical block. Then, the piston is controlled to move downward, and the piston presses the paste. The lower part of the cylindrical filling cavity communicates with the cylindrical magazine cavity of the paste magazine. When controlling the movement of the extrusion piston, the extrusion piston can move from the cylindrical filling cavity of the paste filling component to the cylindrical magazine cavity, thereby squeezing the paste downward. The cylindrical magazine cavity of the paste magazine communicates with the paste extrusion port of the paste extrusion component, and the paste is extruded from the paste extrusion port under pressure and then coated on the lithium-ion battery electrode sheet to be coated. The cylindrical filling cavity of the paste filling component and the cylindrical magazine cavity of the paste magazine are both cylindrical, because the internal and external forces of a circle are the most balanced, and each point corresponds to a direction. Conversely, a circle is also the shape that can bear the most pressure in space. In this way, the problem of deformation of the paste magazine during high-pressure coating can be reliably solved. Description of the Drawings

[0019] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:

[0020] Figure 1 It is a structural schematic diagram of the battery paste magazine structure described in the present utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the battery paste magazine structure described in the present utility model;

[0022] Figure 3 It is a structural schematic diagram of the paste extrusion component of the battery paste magazine structure described in the present utility model;

[0023] The marks in the drawings are respectively: 1. Paste filling component; 2. Paste magazine; 3. Paste extrusion component; 4. Extrusion piston; 5. Paste filling port; 6. Paste extrusion port; 7. Piston rod; 8. Piston body; 9. Connecting plate member; 10. Connecting hole; 11. Bottom plate; 12. First side plate; 13. Second side plate; 14. Connection control component; 15. Component body; 16. Component cavity; 17. Perforation; 18. Block paste. Detailed Description of the Invention

[0024] The following is a further detailed description of the specific implementation of the present utility model, including the shapes, structures, mutual positions and connection relationships between various parts, the functions and working principles of various parts, etc., with reference to the accompanying drawings and through the description of embodiments:

[0025] As shown in the attached Figure 1 - attached Figure 3 figures, the present utility model is a battery slurry magazine structure. The lower part of the slurry filling component 1 is connected to the upper part of the slurry magazine 2, and the lower part of the slurry magazine 2 is connected to the upper part of the slurry extrusion component 3. An extrusion piston 4 is installed in the cylindrical filling cavity of the slurry filling component 1. A slurry filling port 5 is provided on the side of the slurry filling component 1. The slurry filling port 5 communicates with the cylindrical filling cavity. The lower part of the cylindrical filling cavity communicates with the cylindrical magazine cavity of the slurry magazine 2, and the cylindrical magazine cavity communicates with the slurry extrusion port 6 of the slurry extrusion component 3. For the above structure, an improved technical solution is proposed in view of the deficiencies in the prior art. When setting the structure, it generally includes three parts: the slurry filling component 1, the slurry magazine 2, and the slurry extrusion component 3. The lower part of the slurry filling component 1 is connected to the upper part of the slurry magazine 2, and the lower part of the slurry magazine 2 is connected to the upper part of the slurry extrusion component 3. An extrusion piston 4 is installed in the cylindrical filling cavity of the slurry filling component 1. A slurry filling port 5 is provided on the side of the slurry filling component 1. The slurry filling port 5 communicates with the cylindrical filling cavity. When feeding is required, the piston 4 is controlled to move to the uppermost position, that is, above the slurry filling port 5, and then the bulk slurry 18 is placed into the cylindrical filling cavity from the slurry filling port 5 to achieve the purpose of facilitating the feeding of the cylindrical bulk slurry 18. The lower part of the cylindrical filling cavity communicates with the cylindrical magazine cavity of the slurry magazine 2. When controlling the movement of the extrusion piston 4, the extrusion piston 4 can move from the cylindrical filling cavity of the slurry filling component 1 to the cylindrical magazine cavity, thereby squeezing the slurry downward. The cylindrical magazine cavity communicates with the slurry extrusion port 6 of the slurry extrusion component 3, and the slurry is extruded from the slurry extrusion port 6 and coated on the lithium-ion battery electrode sheet to be coated. The cylindrical filling cavity of the slurry filling component 1 and the cylindrical magazine cavity of the slurry magazine 2 are both of cylindrical structures because the internal and external forces of a circle are the most balanced, and each point corresponds to a direction. On the contrary, a circle is also the shape that can bear the most pressure in space. In this way, the problem of deformation of the slurry magazine during the high-pressure coating process can be reliably solved. To match the cylindrical structures of the cylindrical filling cavity of the slurry filling component 1 and the cylindrical magazine cavity of the slurry magazine 2, the shape of the bulk slurry is also set as a cylinder, and the bulk slurry can be deformed and extruded after being subjected to high pressure. The battery slurry magazine structure of the present utility model has a simple structure. During the high-pressure coating of the slurry, it ensures that the slurry magazine will not easily deform, and the bulk slurry can be conveniently added, improving the production efficiency.

[0026] The extrusion piston 4 includes a piston rod 7 and a piston body 8, the lower end of the piston rod 7 is connected to the piston body 8, and the upper part of the piston rod 7 is connected to the control component 14. In the above structure, when the control component is extended and retracted, the extrusion piston is driven to move up and down, and when the extrusion piston moves downward, the block slurry can be squeezed to achieve slurry extrusion, and when the extrusion piston moves upward, the slurry can be added from the slurry filling port 5.

[0027] The cylindrical filling cavity of the slurry filling component 1 and the cylindrical magazine cavity of the slurry magazine 2 are both cylindrical structures, the cylindrical filling cavity and the cylindrical magazine cavity have the same diameter, and the center lines of the cylindrical filling cavity and the cylindrical magazine cavity coincide with each other. The piston body 8 of the extrusion piston 4 is configured to be able to move from the cylindrical filling cavity of the slurry filling component 1 to the cylindrical magazine cavity. In the above structure, the cylindrical filling cavity and the cylindrical magazine cavity have the same diameter, and the center lines of the cylindrical filling cavity and the cylindrical magazine cavity coincide with each other, so the range of motion of the extrusion piston (piston) is that it can move back and forth between the cylindrical filling cavity and the cylindrical magazine cavity, and the cylindrical filling cavity and the cylindrical magazine cavity limit the position of the extrusion piston to ensure that it can only move up and down.

[0028] The slurry magazine 2 is provided with a connecting plate 9, and a connecting hole 10 is provided on the connecting plate 9. Bolts pass through the connecting holes to fix the slurry magazine 2 to the structural support. In the above structure, the slurry magazine 2 needs to be fixed to the structural support. On the one hand, the slurry magazine 2 is reliably fixed to facilitate the action of the extrusion piston. On the other hand, the distance between the slurry extrusion port 6 of the slurry extrusion component 3 and the lithium-ion battery electrode to be coated is determined to ensure that the coating amount meets the set requirements.

[0029] The slurry filling port 5 comprises a bottom plate 11, a first side plate 12, and a second side plate 13, and the bottom plate 11, the first side plate 12, and the second side plate 13 are in a U-shaped structure. With the above structure, when adding block slurry, it can be placed on the bottom plate 11, and then can be pushed into the cylindrical filling cavity.

[0030] The slurry extrusion component 3 comprises a component body 15, a component cavity 16 is arranged on the component body 15, and a slurry extrusion port 6 is arranged at the lower part of the component cavity 16. In the above structure, the slurry enters the component cavity 16 under the high pressure of the extrusion piston and is then extruded from the slurry extrusion port 6.

[0031] The component body 15 of the slurry extrusion component 3 is provided with a through hole 17, and a bolt passes through the through hole 17 to fix the component body and the lower part of the slurry magazine 2. With the above structure, the slurry extrusion component 3 and the slurry magazine 2 can be conveniently connected and disassembled, and the disassembly is to replace the slurry extrusion component 3 with a different slurry extrusion port 6 to meet different battery processing requirements.

[0032] The slurry extrusion port 6 is a straight-line structure. In the above structure, the slurry extrusion port 6 is a straight-line structure, and the slurry extrusion port 6 is located above the lithium-ion battery pole piece to be coated. When the lithium-ion battery passes under the slurry extrusion port 6, the high-pressure extruded slurry is transferred to the lithium-ion battery pole piece.

[0033] The connection control component 14 is fixedly mounted on the structural support. In the above structure, the connection control component is fixed on the structural support, which is convenient for the connection control component to extend and retract to apply external force and control the extrusion piston. The control component can be a telescopic cylinder or a servo motor. The rotation of the servo motor drives the piston rod 7 to rotate. The piston rod 7 and the piston body 8 are threadedly connected, and the piston body 8 realizes the telescopic movement.

[0034] The battery slurry magazine structure described in the utility model, when the structure is set, as a whole includes three parts: a slurry filling component 1, a slurry magazine 2, and a slurry extrusion component 3. The lower part of the slurry filling component 1 is connected to the upper part of the slurry magazine 2, and the lower part of the slurry magazine 2 is connected to the upper part of the slurry extrusion component 3 to achieve reliable connection. An extrusion piston 4 is installed in the cylindrical filling cavity of the slurry filling component 1, and a slurry filling port 5 is set on the side of the slurry filling component 1. The slurry filling port 5 is connected to the cylindrical filling cavity. When feeding is needed, the piston 4 is controlled to move to the top, that is, above the slurry filling port 5, and then the block slurry 18 is put into the cylindrical filling cavity from the slurry filling port 5, so as to achieve the purpose of convenient feeding of the block slurry 18 made into a cylinder; the lower part of the cylindrical filling cavity is connected to the cylindrical magazine cavity of the slurry magazine 2. When the extrusion piston 4 is controlled to move, the extrusion piston 4 can move from the cylindrical filling cavity of the slurry filling component 1 to the cylindrical magazine cavity, thereby squeezing the slurry downward, and the cylindrical magazine cavity is connected to the slurry extrusion port 6 of the slurry extrusion component 3. After the slurry is pressurized, it is extruded from the slurry extrusion port 6 and coated on the lithium-ion battery electrode to be coated. The cylindrical filling cavity of the slurry filling component 1 and the cylindrical magazine cavity of the slurry magazine 2 are both cylindrical structures, because the internal and external forces of the circle are the most balanced, and each point corresponds to an orientation. In other words, the circle is the shape that can best withstand pressure in space, so the problem of deformation of the slurry magazine during high-pressure coating can be reliably solved. In order to match the cylindrical filling cavity of the slurry filling component 1 and the cylindrical magazine cavity of the slurry magazine 2, both of which are cylindrical structures, the shape of the block slurry is also set to be cylindrical, and the block slurry can be deformed and squeezed out after being subjected to high pressure.

[0035] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A battery paste magazine structure, characterized in that: The lower part of the slurry filling component (1) is connected to the upper part of the slurry magazine (2), and the lower part of the slurry magazine (2) is connected to the upper part of the slurry extrusion component (3). An extrusion piston (4) is installed in the cylindrical filling cavity of the slurry filling component (1). A slurry filling port (5) is arranged on the side of the slurry filling component (1), and the slurry filling port (5) communicates with the cylindrical filling cavity. The lower part of the cylindrical filling cavity communicates with the cylindrical magazine cavity of the slurry magazine (2), and the cylindrical magazine cavity communicates with the slurry extrusion port (6) of the slurry extrusion component (3).

2. The battery paste magazine structure according to claim 1, characterized in that: The extrusion piston (4) includes a piston rod (7) and a piston body (8). The lower end of the piston rod (7) is connected to the piston body (8), and the upper part of the piston rod (7) is connected to the control component (14).

3. The battery paste magazine structure according to claim 1 or 2, characterized in that: Both the cylindrical filling cavity of the slurry filling component (1) and the cylindrical magazine cavity of the slurry magazine (2) are of cylindrical structure. The diameters of the cylindrical filling cavity and the cylindrical magazine cavity are the same, and the central lines of the cylindrical filling cavity and the cylindrical magazine cavity coincide.

4. The battery paste magazine structure according to claim 3, wherein: The piston body (8) of the extrusion piston (4) is arranged to be able to move from the cylindrical filling cavity of the slurry filling component (1) into the cylindrical magazine cavity.

5. The battery paste magazine structure according to claim 1 or 2, characterized in that: A connecting plate member (9) is arranged on the slurry magazine (2), and a connecting hole (10) is arranged on the connecting plate member (9). Bolts pass through the connecting hole to fixedly connect the slurry magazine (2) to the structural support.

6. The battery paste magazine structure according to claim 1 or 2, characterized in that: The slurry filling port (5) includes a bottom plate (11), a first side plate (12), and a second side plate (13). The bottom plate (11), the first side plate (12), and the second side plate (13) are in a U-shaped structure.

7. The battery paste magazine structure according to claim 1 or 2, characterized in that: The slurry extrusion component (3) includes a component body (15). A component cavity (16) is arranged on the component body (15), and the slurry extrusion port (6) is arranged at the lower part of the component cavity (16).

8. The battery paste magazine structure according to claim 7, characterized in that: Perforations (17) are arranged on the component body (15) of the slurry extrusion component (3). Bolts pass through the perforations (17) to fixedly connect the component body and the lower part of the slurry magazine (2).

9. The battery paste magazine structure according to claim 7, characterized in that: The slurry extrusion port (6) is of a linear structure.

10. The battery paste magazine structure according to claim 2, characterized in that: The connection control component (14) is fixedly installed on the structural support.

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