Raw material crushing equipment for lithium ion battery diaphragm

Abstract

The utility model discloses raw material crushing equipment for a lithium ion battery diaphragm. The raw material crushing equipment comprises a crushing barrel, a crushing frame fixed at the top of the crushing barrel, and a driving crushing roller and a driven crushing roller which are rotationally connected to the inner side of the crushing frame, a power assembly is arranged on the side face of the crushing frame, and a crushing mechanism is arranged on the inner side of the crushing barrel. After to-be-crushed lithium ion battery diaphragm raw materials are put into the top of the crushing frame, through cooperation of the power assembly, the driving crushing roller and the driven crushing roller, the raw materials can be extruded and sheared, the primary crushing effect is achieved, and the subsequent fine crushing efficiency is improved; according to the device, the polyethylene or polypropylene raw material can be effectively crushed into smaller particles, so that the particles are easier to mix and uniformly distribute in the subsequent processing process, the stability and controllability of the subsequent preparation process are improved, and the influence on the quality and performance of the final product is avoided.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery separator production technology, and in particular to a raw material crushing device for lithium-ion battery separators. Background Technology

[0002] Lithium-ion batteries mainly consist of positive / negative electrode materials, electrolyte, separator, and battery casing packaging materials. The separator is a crucial component of lithium-ion batteries, serving to separate the positive and negative electrodes, prevent internal short circuits, allow electrolyte ions to pass freely, and complete the electrochemical charging and discharging process. The raw materials for preparing lithium-ion battery separators mainly include polymers such as polyethylene (PE) and polypropylene (PP). During production, the raw materials need to undergo crushing pretreatment to ensure that they are easier to mix and distribute uniformly during subsequent preparation.

[0003] Chinese utility model patent CN220763210U discloses a crushing device for recycled ultra-high molecular weight polyethylene (UHMWPE) sheets. The sheet material is poured into a feed hopper, spread by a distribution baffle, and falls into the crushing chamber. The user then drives two crushing rollers to rotate relative to each other using a drive assembly. As the rollers rotate, the crushing teeth at both ends of the rollers, when moving away from the center of the crushing chamber, actuate two driven blocks, causing the driven blocks to rotate a shaft. This rotation of the shaft drives a material-pushing component, which moves the sheet material between adjacent crushing teeth of the rollers to the center of the two rollers. This facilitates the crushing operation and accelerates the entry of the sheet material from the gap between the crushing teeth into the space between the rollers, thus improving the crushing efficiency. The crushed sheet material falls into a collection hopper below, facilitating collection and subsequent use.

[0004] However, in actual use, this device only crushes materials through a single compression between two crushing rollers, which limits its crushing capacity. It is often difficult to completely and uniformly crush polyethylene or polypropylene raw materials into smaller particles, which can easily lead to uneven mixing and distribution of raw materials in subsequent processing, affecting the quality and performance of the final product. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a raw material crushing device for lithium-ion battery separators.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a raw material crushing device for lithium-ion battery separators, comprising: a crushing cylinder, a crushing frame fixed to the top of the crushing cylinder, and an active crushing roller and a driven crushing roller rotatably connected to the inner side of the crushing frame;

[0007] The side of the crushing frame is provided with a power assembly for driving the active crushing roller and the driven crushing roller to move relative to each other, and the inner side of the crushing cylinder is provided with a crushing mechanism.

[0008] The crushing mechanism includes: a first servo motor fixed to the back of the crushing cylinder, a rotating rod installed at the output end of the first servo motor, and a plurality of crushing blades installed on the side of the rotating rod; the plurality of crushing blades are located inside the crushing cylinder.

[0009] In a preferred embodiment of this utility model, in the planar direction, a plurality of the crushing blades are evenly distributed in a circular array, and in the vertical direction, a plurality of the crushing blades are evenly distributed in a linear array; in the vertical direction, the included angle between adjacent crushing blades is 90°.

[0010] In a preferred embodiment of this utility model, the active crushing roller and the driven crushing roller mesh with each other; the sides of the rotating rod near both ends are rotatably connected to the inner side of the crushing cylinder.

[0011] In a preferred embodiment of this utility model, a plurality of fixing rings are fixed to the side of the rotating rod, a plurality of connecting blocks are fixed to the side of the fixing rings, a plurality of connecting holes are opened on the surface of the connecting blocks, and a connecting bolt is threaded to the side of the crushing blade, and the side of the connecting bolt is threaded to the inner side of the connecting hole.

[0012] In a preferred embodiment of the present invention, the power assembly includes: a second servo motor fixed to the back of the crushing frame, a drive gear fixed to the active crushing roller at one end of the front of the crushing frame, and a driven gear fixed to the driven crushing roller at one end of the front of the crushing frame; the output end of the second servo motor is fixed to one end of the active crushing roller, and the drive gear meshes with the driven gear.

[0013] In a preferred embodiment of the present invention, a hinged plate is installed on one side of the crushing cylinder, the bottom of the hinged plate is hinged to one side of the crushing cylinder, and the top of the hinged plate is engaged with the inner side of the crushing cylinder.

[0014] In a preferred embodiment of this utility model, a handle is fixed on one side of the opening and closing plate to facilitate the user to rotate the opening and closing plate.

[0015] In a preferred embodiment of this utility model, a discharge cone is fixed to the bottom of the crushing cylinder, the interior of the discharge cone is in communication with the interior of the crushing cylinder, and a valve is installed on the side of the discharge cone.

[0016] In a preferred embodiment of this utility model, the front of the crushing cylinder is provided with an observation window for the user to conveniently observe the internal condition of the crushing cylinder.

[0017] In a preferred embodiment of the present invention, a plurality of support legs are fixed to the bottom of the crushing cylinder, a support plate is fixed to the bottom of the support legs, and a plurality of positioning holes are provided on the surface of the support plate.

[0018] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0019] (1) This utility model provides a raw material crushing device for lithium-ion battery separators. By cooperating with the crushing frame and the crushing cylinder, the raw material of lithium-ion battery separators to be crushed is put into the top of the crushing frame. By cooperating with the power component, the active crushing roller and the driven crushing roller, the raw material can be squeezed and sheared to achieve the initial crushing effect and improve the efficiency of subsequent fine crushing. After the raw material that has completed the initial crushing enters the interior of the crushing cylinder, the polyethylene or polypropylene raw material can be effectively crushed into smaller particles by cooperating with the first servo motor, the rotating rod and several crushing blades, so that it is easier to mix and distribute evenly in the subsequent processing, thereby improving the stability and controllability of the subsequent preparation process and avoiding affecting the quality and performance of the final product.

[0020] (2) In this utility model, by fixing several fixing rings on the side of the rotating rod, one side of the crushing blade is aligned with the connecting hole at a suitable position on the connecting block. With the cooperation of the connecting bolt, connecting block, crushing blade and connecting hole, the distance between the crushing blade and the inner wall of the crushing cylinder can be adjusted according to the crushing requirements, so that the crushing effect can be adjusted in a personalized way, which helps to improve its flexibility and practicality. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0022] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the present invention;

[0023] Figure 2 This is a half-sectional view of the crushing cylinder and crushing frame according to a preferred embodiment of the present invention;

[0024] Figure 3 This is an overall side view of a preferred embodiment of the present invention;

[0025] In the diagram: 1. Crushing cylinder; 2. Crushing frame; 21. Active crushing roller; 22. Driven crushing roller; 3. First servo motor; 31. Rotating rod; 32. Crushing blade; 4. Fixing ring; 41. Connecting block; 42. Connecting hole; 43. Connecting bolt; 5. Second servo motor; 51. Drive gear; 52. Driven gear; 6. Opening and closing plate; 61. Handle; 7. Discharge cone; 71. Valve; 8. Observation window; 9. Support leg; 91. Support plate; 92. Positioning hole. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0027] It should be noted that this crushing equipment is preferably suitable for crushing and producing lithium-ion battery separators made of polyethylene or polypropylene.

[0028] like Figure 1 , Figure 2 and Figure 3 As shown, a raw material crushing device for lithium-ion battery separators includes: a crushing cylinder 1, a crushing frame 2 fixed to the top of the crushing cylinder 1, and an active crushing roller 21 and a driven crushing roller 22 rotatably connected to the inner side of the crushing frame 2; a power assembly for driving the active crushing roller 21 and the driven crushing roller 22 to move relative to each other is provided on the side of the crushing frame 2, and a crushing mechanism is provided on the inner side of the crushing cylinder 1; the crushing mechanism includes: a first servo motor 3 fixed to the back of the crushing cylinder 1, a rotating rod 31 installed at the output end of the first servo motor 3, and a plurality of crushing blades 32 installed on the side of the rotating rod 31; the plurality of crushing blades 32 are located inside the crushing cylinder 1.

[0029] It should be noted that, in the planar direction, several crushing blades 32 are evenly distributed in a circular array, and in the vertical direction, several crushing blades 32 are evenly distributed in a linear array; in the vertical direction, the included angle between adjacent crushing blades 32 is 90°; the active crushing roller 21 and the driven crushing roller 22 mesh with each other; the sides of the rotating rod 31 near both ends are rotatably connected to the inside of the crushing cylinder 1; the interior of the crushing frame 2 is connected to the interior of the crushing cylinder 1.

[0030] Specifically, after the lithium-ion battery separator raw material to be crushed is put into the top of the crushing frame 2, the active crushing roller 21 is driven to rotate toward the side of the driven crushing roller 22 through the cooperation of the power component. The driven crushing roller 22 rotates relative to the active crushing roller 21. By using the meshing of the active crushing roller 21 and the driven crushing roller 22, the raw material can be squeezed and sheared to achieve the initial crushing effect and improve the efficiency of subsequent fine crushing. After the raw material that has completed the initial crushing enters the interior of the crushing cylinder 1, the first servo motor 3 is started to drive the rotating rod 31 to rotate at high speed. This can drive several crushing blades 32 on the side of the rotating rod 31 to rotate synchronously. The crushing blades 32 are evenly distributed in a circular array in the planar direction and in a linear array in the vertical direction. This can increase the contact frequency and contact angle between the crushing blades 32 and the raw material in the crushing cylinder 1. In this way, the polyethylene or polypropylene raw material can be effectively crushed into smaller particles, making it easier to mix and distribute evenly in the subsequent processing. This improves the stability and controllability of the subsequent preparation process and avoids affecting the quality and performance of the final product.

[0031] like Figure 2 As shown, in some embodiments, a plurality of fixing rings 4 are fixed to the side of the rotating rod 31, a plurality of connecting blocks 41 are fixed to the side of the fixing rings 4, a plurality of connecting holes 42 are opened on the surface of the connecting blocks 41, and a connecting bolt 43 is threadedly connected to the side of the crushing blade 32, and the side of the connecting bolt 43 is threadedly connected to the inner side of the connecting hole 42.

[0032] Specifically, before use, one side of the crushing blade 32 can be aligned with the connecting hole 42 at a suitable position on the connecting block 41, and the connecting bolt 43 can be threaded onto the inner side of the crushing blade 32 and the connecting hole 42 in sequence. This allows the distance between the crushing blade 32 and the inner wall of the crushing cylinder 1 to be adjusted according to the crushing requirements, so that the crushing effect can be adjusted in a personalized way, which helps to improve its flexibility and practicality.

[0033] like Figure 1 and Figure 3 As shown, in some embodiments, the power assembly includes: a second servo motor 5 fixed to the back of the crushing frame 2, a drive gear 51 fixed to the drive crushing roller 21 at one end of the front of the crushing frame 2, and a driven gear 52 fixed to the driven crushing roller 22 at one end of the front of the crushing frame 2; the output end of the second servo motor 5 is fixed to one end of the drive crushing roller 21, and the drive gear 51 meshes with the driven gear 52.

[0034] Specifically, the second servo motor 5 is started, driving the active crushing roller 21 at the output end to rotate toward the side of the driven crushing roller 22, and driving the active gear 51 located at one end of the front of the active crushing roller 21 to rotate synchronously. By utilizing the meshing of the active gear 51 and the driven gear 52, the driven crushing roller 22 can be stably driven to rotate relative to the active crushing roller 21, thereby realizing the relative rotation of the active crushing roller 21 and the driven crushing roller 22.

[0035] In some embodiments, a hinged plate 6 is installed on one side of the crushing cylinder 1. The bottom of the hinged plate 6 is hinged to one side of the crushing cylinder 1, and the top of the hinged plate 6 is engaged with the inner side of the crushing cylinder 1. With the hinged plate 6, it can be rotated around the hinge point between the hinged plate 6 and the crushing cylinder 1, so that the hinged plate 6 can be driven to open or close one side of the crushing cylinder 1, which is convenient for users to perform maintenance and other operations.

[0036] In some embodiments, a handle 61 is fixed on one side of the opening and closing plate 6 to facilitate the user to rotate the opening and closing plate 6; the handle 61 makes it easier for the user to hold the handle 61 and rotate the opening and closing plate 6 up and down, thus improving convenience.

[0037] In some embodiments, a discharge cone 7 is fixed to the bottom of the crushing cylinder 1, and the interior of the discharge cone 7 is in communication with the interior of the crushing cylinder 1. A valve 71 is installed on the side of the discharge cone 7. After the raw material is crushed, the raw material in the crushing cylinder 1 can be discharged from the discharge cone 7 by opening the valve 71.

[0038] In some embodiments, the front of the crushing cylinder 1 is provided with an observation window 8 for the user to observe the internal condition of the crushing cylinder 1; the observation window 8 makes it easy for the user to observe the internal condition of the crushing cylinder 1 from the outside.

[0039] In some embodiments, a number of support legs 9 are fixed to the bottom of the crushing cylinder 1, and a support plate 91 is fixed to the bottom of the support legs 9. A number of positioning holes 92 are opened on the surface of the support plate 91. The support legs 9 and the support plate 91 can support the crushing cylinder 1, and the support plate 91 can be fixed in the working area by using pins, screws, bolts, etc., passing through the positioning holes 92.

[0040] In use, the user holds the handle 61 and flips it downwards with the hinge point between the opening plate 6 and the crushing cylinder 1 as the center. This drives the opening plate 6 to open one side of the crushing cylinder 1, aligning one side of the crushing blade 32 with the connecting hole 42 at a suitable position on the connecting block 41. The connecting bolts 43 are then threaded onto the inner sides of the crushing blade 32 and the connecting hole 42. The distance between the crushing blade 32 and the inner wall of the crushing cylinder 1 is adjusted according to the crushing requirements. After closing the opening plate 6, the lithium-ion battery separator material to be crushed is fed into the top of the crushing frame 2. The second servo motor 5 is started, driving the active crushing roller 21 at the output end to rotate toward the side of the driven crushing roller 22. This also drives the active gear 51 located at the front end of the active crushing roller 21 to rotate synchronously. By utilizing the meshing of the active gear 51 and the driven gear 52, the driven crushing roller 22 can be stably driven to rotate relative to the active crushing roller 21. The rotation utilizes the meshing of the active crushing roller 21 and the driven crushing roller 22 to squeeze and shear the raw material, achieving a preliminary crushing effect and improving the efficiency of subsequent fine crushing. After the raw material that has completed the preliminary crushing enters the crushing cylinder 1, the first servo motor 3 is started, driving the rotating rod 31 to rotate at high speed. This drives several crushing blades 32 on the side of the rotating rod 31 to rotate synchronously. The crushing blades 32 are evenly distributed in a circular array in the planar direction and in a linear array in the vertical direction, which can increase the contact frequency and contact angle between the crushing blades 32 and the raw material in the crushing cylinder 1. This can effectively crush the polyethylene or polypropylene raw material into smaller particles, making it easier to mix and distribute evenly in subsequent processing, thereby improving the stability and controllability of the subsequent preparation process and avoiding affecting the quality and performance of the final product.

[0041] Based on the above description and the preferred embodiments of this utility model, it will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A raw material crushing device for lithium-ion battery separators, characterized in that, include: The crushing cylinder (1), the crushing frame (2) fixed on the top of the crushing cylinder (1), and the active crushing roller (21) and the driven crushing roller (22) rotatably connected to the inner side of the crushing frame (2); The side of the crushing frame (2) is provided with a power assembly for driving the active crushing roller (21) and the driven crushing roller (22) to move relative to each other, and the inner side of the crushing cylinder (1) is provided with a crushing mechanism. The crushing mechanism includes: a first servo motor (3) fixed on the back of the crushing cylinder (1), a rotating rod (31) installed at the output end of the first servo motor (3), and a plurality of crushing blades (32) installed on the side of the rotating rod (31); the plurality of crushing blades (32) are located inside the crushing cylinder (1).

2. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: In the planar direction, a number of the crushing blades (32) are evenly distributed in a circular array, and in the vertical direction, a number of the crushing blades (32) are evenly distributed in a linear array; in the vertical direction, the included angle between adjacent crushing blades (32) is 90°.

3. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: The active crushing roller (21) and the driven crushing roller (22) mesh with each other; the side of the rotating rod (31) near both ends is rotatably connected to the inner side of the crushing cylinder (1).

4. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: The rotating rod (31) has several fixing rings (4) fixed on its side, and several connecting blocks (41) are fixed on the side of the fixing rings (4). Several connecting holes (42) are opened on the surface of the connecting blocks (41). The side of the crushing blade (32) is threaded with a connecting bolt (43), and the side of the connecting bolt (43) is threaded with the inner side of the connecting hole (42).

5. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: The power assembly includes: a second servo motor (5) fixed to the back of the crushing frame (2), a drive gear (51) fixed to the active crushing roller (21) at one end of the front of the crushing frame (2), and a driven gear (52) fixed to the driven crushing roller (22) at one end of the front of the crushing frame (2); the output end of the second servo motor (5) is fixed to one end of the active crushing roller (21), and the drive gear (51) meshes with the driven gear (52).

6. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: A hinged plate (6) is installed on one side of the crushing cylinder (1). The bottom of the hinged plate (6) is hinged to one side of the crushing cylinder (1), and the top of the hinged plate (6) is engaged with the inner side of the crushing cylinder (1).

7. The raw material crushing equipment for lithium-ion battery separators according to claim 6, characterized in that: One side of the opening and closing plate (6) is fixed with a handle (61) for the user to easily rotate the opening and closing plate (6).

8. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: The bottom of the crushing cylinder (1) is fixed with a discharge cone (7), the interior of the discharge cone (7) is in communication with the interior of the crushing cylinder (1), and a valve (71) is installed on the side of the discharge cone (7).

9. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: The front of the crushing cylinder (1) is provided with an observation window (8) for the user to observe the internal condition of the crushing cylinder (1).

10. The raw material crushing equipment for lithium-ion battery separators according to claim 1, characterized in that: The bottom of the crushing cylinder (1) is fixed with several support legs (9), and the bottom of the support legs (9) is fixed with a support plate (91). The surface of the support plate (91) is provided with several positioning holes (92).

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