Extraction rotating ball head flattening device for lithium ion battery diaphragm

Abstract

The utility model discloses an extraction rotating ball head flattening device for a lithium ion battery diaphragm, and belongs to the technical field of lithium ion battery diaphragm processing. The device comprises a fixing plate, a transverse adjusting and moving mechanism detachably connected to the fixing plate, a fixing block connected to the free end of the transverse adjusting and moving mechanism, a swing rod vertically penetrating through the fixing block and a mirror surface ball connected to the tail end of the swing rod. The fixed plate is fixed on the extraction tank frame, the extension length of the swing rod is adjusted through the transverse adjustment moving mechanism, and the clinging degree of the mirror surface ball and the thick edge of the diaphragm is adjusted through the swing rod, so that the spherical surface of the mirror surface ball is in direct contact with the thick edge of the edge of the diaphragm, the spherical surface is in direct friction with the diaphragm, and the effect of flattening the edge of the running diaphragm is achieved. The technical problem that the yield is affected due to the fact that the edge of the diaphragm is thick in an existing lithium battery diaphragm stretching processing technology is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lithium battery diaphragm processing, more specifically to a kind of lithium ion battery diaphragm's extraction rotary ball head flattening device. BACKGROUND

[0002] At present, the preparation process of lithium ion battery diaphragm is mainly divided into two kinds: dry process (flake crystal separation method) and wet process (thermally induced phase separation method). Wet process can better control the pore size, distribution and porosity, so it is generally used to manufacture high-end film, and in recent years, lithium battery diaphragm prepared by wet process is also more and more favored by the market. For example, the wet asynchronous stretching process flow generally includes the following 7 steps: 1) feeding: the raw materials such as PE and pore-forming agent are pretreated according to the formula and delivered to the extrusion system. 2) casting: the pretreated raw materials are melted and plasticized in the double screw extrusion system, and then the melt is extruded from the die, and the melt is formed into a casting thick sheet containing pore-forming agent after casting. 3) longitudinal stretching: the casting thick sheet is stretched longitudinally. 4) transverse stretching: the thick sheet after longitudinal stretching is stretched transversely to obtain a diaphragm base film containing pore-forming agent. 5) extraction: the diaphragm base film is extracted in the extraction tank to form a diaphragm base film without pore-forming agent. 6) shaping: the diaphragm base film without pore-forming agent is dried and shaped to obtain a nanometer microporous membrane. 7) slitting: the nanometer microporous membrane is cut into finished diaphragm according to the customer's specification.

[0003] In the whole stretching process, the edge of the diaphragm is usually thick, which affects the yield of the subsequent processing. UTILITY MODEL CONTENT

[0004] 1. The technical problem to be solved by the utility model:

[0005] In view of the problem that the existing lithium battery diaphragm stretching process causes the edge of the diaphragm to be thick, the utility model provides a lithium ion battery diaphragm extraction rotary ball head flattening device, which flattens the thick edge of the diaphragm by mirror ball during extraction in the extraction tank, thereby improving the yield of the finished diaphragm.

[0006] 2. Technical scheme:

[0007] To achieve the above purpose, the technical scheme provided by the utility model is:

[0008] The extraction rotating ball head flattening device of the lithium ion battery diaphragm comprises a fixed plate, a transverse adjustment moving mechanism detachably connected to the fixed plate, a fixed block connected to the free end of the transverse adjustment moving mechanism, a swing rod vertically penetrating through the fixed block, and a mirror surface ball connected to the tail end of the swing rod; the fixed plate is fixed to the extraction tank frame, the extension length of the swing rod is adjusted through the transverse adjustment moving mechanism, and the close degree of the mirror surface ball to the thick edge of the diaphragm edge is adjusted through the swing rod, so that the spherical surface of the mirror surface ball directly contacts the thick edge of the diaphragm edge, the spherical surface directly rubs the diaphragm, and then the diaphragm edge during operation is flattened.

[0009] Further technical solutions, the top end of the swing rod is connected with a hand wheel, so that the swing amplitude of the swing rod is convenient and labor-saving to adjust, and the effect of quantitatively adjusting the flattening degree of the thick edge is achieved.

[0010] Further technical solutions, the transverse adjustment moving mechanism comprises a transverse adjustment plate, adjustment holes penetrating through the transverse adjustment plate and the fixed plate and matched with each other, and a plug rod inserted into different adjustment holes to adjust the transverse extension length of the transverse adjustment plate, and the optimal position of the mirror surface ball can be adjusted according to the width of the diaphragm.

[0011] Further technical solutions, screw holes are transversely penetrated in the side surface of the fixed block, and locking bolts are screwed in the screw holes to fix the position of the adjusted mirror surface ball and stabilize the flattening effect.

[0012] Further technical solutions, the mirror surface ball is in an ellipsoid shape in the vertical direction, and the effective flattening area of the spherical surface to the diaphragm edge can be improved.

[0013] Further technical solutions, the transverse adjustment plate and the fixed plate are both angle steel plates, the two plate surfaces of the angle steel plate are both provided with adjustment holes, and after the adjustment length is confirmed, the effect of double-hole double-surface cooperative fixing is achieved.

[0014] Further technical solutions, the tail part of the swing rod is a bend, and the bend tail end is connected with the mirror surface ball, so that the swing amplitude of the swing rod can be improved to adapt to the adjustment of different thick edge flattening degrees.

[0015] 3, beneficial effects:

[0016] Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

[0017] The extraction rotating ball head flattening device of the lithium ion battery diaphragm can quantitatively flatten diaphragms with different thicknesses and widths through the cooperative matching of the transverse adjustment moving mechanism and the swing rod. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure of the lithium ion battery diaphragm extraction rotating ball head flattening device is shown in the specific embodiment.

[0019] Figure 2 for Figure 1 Front view structural diagram;

[0020] Figure 3 for Figure 2 A schematic diagram of the AA section;

[0021] Figure 4 for Figure 1 A top-view structural diagram;

[0022] Figure 5 This is a schematic diagram of the extraction rotating ball head flattening device for a lithium-ion battery separator in use, according to a specific embodiment.

[0023] Figure 6 for Figure 5 A magnified structural diagram of part B;

[0024] Figure 7 for Figure 5 A schematic diagram of the side view structure;

[0025] Figure 8 for Figure 5 A schematic diagram of the front view structure.

[0026] In the diagram: 1. Fixed plate; 2. Horizontal adjustment plate; 3. Fixed block; 4. Handwheel; 5. Locking bolt; 6. Swing rod; 7. Mirror ball; 8. Connecting plate; 10. Insert rod; 11. Adjustment hole; 20. Extraction tank frame; 30. Battery separator sheet; 61. Elbow. Detailed Implementation

[0027] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the accompanying drawings.

[0028] Example 1

[0029] The extraction rotating ball head flattening device for the lithium-ion battery separator in this embodiment, such as... Figure 1 , 2 As shown in Figures 3 and 4, the device includes a fixed plate 1, a lateral adjustment and moving mechanism detachably connected to the fixed plate 1, a fixed block 3 connected to the free end of the lateral adjustment and moving mechanism, a swing rod 6 vertically passing through the fixed block 3, and a mirror ball 7 connected to the end of the swing rod 6.

[0030] The extraction rotating ball head flattening device for lithium ion battery separator of the embodiment, in the specific use process, the fixed plate 1 is fixed on the extraction tank frame 20, the extension length of the swing rod 6 is adjusted through the transverse adjustment moving mechanism, the transverse adjustment moving mechanism can use the cylinder telescopic rod, the electric cylinder telescopic rod and other devices with transverse telescopic function, then the close degree of the mirror surface ball 7 and the thick edge of the battery separator sheet 30 is adjusted through the swing rod 6, the spherical surface of the mirror surface ball 7 directly contacts the thick edge of the separator edge, the spherical surface directly rubs the film, and then the flattening effect of the running film edge is achieved.

[0031] Embodiment 2

[0032] The extraction rotating ball head flattening device for lithium ion battery separator of the embodiment, as shown in Figure 1 、 2 , 3, 4, 5, 8, the basic structure is same as embodiment 1, the difference or improvement lies in that the fixed plate 1 is fixed on the extraction tank frame 20; the transverse adjustment moving mechanism comprises a transverse adjustment plate 2, adjustment holes 11 which are bored through the plate surfaces of the transverse adjustment plate 2 and the fixed plate 1 and matched with each other, and plug rods 10 which are inserted into different adjustment holes 11 to adjust the transverse extension length of the transverse adjustment plate 2, the optimal position of the mirror surface ball 7 can be adjusted according to the width of the film, the adjustment holes 11 are preferably a plurality of holes which are uniformly distributed in the length direction, the plug rods 10 are large-head plug rods, the head diameter of which is larger than the hole diameter of the adjustment holes 11, the plug rods 10 can also be screw rods, and the adjustment holes 11 are screw holes which are matched with the threads of the screw rods. The side surface of the fixed block 3 is transversely bored with a screw hole, and a locking bolt 5 is screwed in the screw hole to fix the position of the adjusted mirror surface ball 7 and stabilize the flattening effect.

[0033] The top end of the swing rod 6 is connected with a hand wheel 4, so that the swing amplitude of the swing rod 6 is adjusted conveniently and labor-savingly, and the effect of quantitatively adjusting the thick edge flattening degree by rotating the arc of the hand wheel 4 is achieved.

[0034] The mirror surface ball 7 is in a vertical ellipsoid shape, which can improve the effective flattening area of the spherical surface and the film edge of the battery separator sheet 30.

[0035] The transverse adjustment plate 2 and the fixed plate 1 are both angle steel plates, the two plate surfaces of the angle steel plate are both provided with adjustment holes 11, and after the adjustment length is confirmed, the effect of double-hole double-surface cooperative fixing is achieved.

[0036] The tail part of the swing rod 6 is a bend 61, the end of the bend 61 is connected with the mirror surface ball 7, which can improve the swing amplitude of the swing rod 6 to adapt to the adjustment of different thick edge flattening degrees.

[0037] Embodiment 3

[0038] The extraction rotating ball head flattening device for lithium ion battery separator of the embodiment, the basic structure is same as embodiment 2, the difference or improvement lies in that in order to further improve the extension stroke of the whole device, as Figure 6 、 7As shown in Figs. 1-8, the angle steel plate as the fixed plate 1 is fixed on the extraction tank frame 20 through the connecting plate 8.

[0039] The extraction rotary ball head flattening device of the lithium ion battery diaphragm of the embodiment can achieve quantitative flattening effect for the battery diaphragm sheet 30 with different thickness and width through the cooperation of the lateral adjusting plate 2, the fixed plate 1 and the swing rod 6.

[0040] The above description of the present application and its embodiments is illustrative, and is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure and manufacturing steps are not limited thereto. Therefore, if a person skilled in the art is inspired by the above description, without departing from the spirit of the present application, similar structure and embodiments can be designed without creative design, which should belong to the protection scope of the present application.

Claims

1. An extraction rotary ball head flattening device for lithium ion battery separators, characterized by: The utility model relates to a horizontal and vertical adjustable mirror, which comprises a fixed plate (1), a transverse adjustment moving mechanism detachably connected to the fixed plate (1), a fixed block (3) connected to the free end of the transverse adjustment moving mechanism, a swing rod (6) vertically penetrating through the fixed block (3), and a mirror ball (7) connected to the end of the swing rod (6).

2. The extraction spin tip flattening device for lithium ion battery separator according to claim 1, wherein: The top end of the swing rod (6) is connected with a hand wheel (4).

3. The extraction spin tip flattening device for lithium ion battery separator according to claim 1, wherein: The transverse adjustment moving mechanism comprises a transverse adjustment plate (2), adjustment holes (11) penetrating through the plate faces of the transverse adjustment plate (2) and the fixed plate (1) and matching with each other, and a plug rod (10) inserted into different adjustment holes (11) to adjust the transverse extension length of the transverse adjustment plate (2).

4. The extraction spin tip flattening device for lithium ion battery separator according to claim 1, wherein: The side surface of the fixed block (3) is transversely penetrated with a screw hole, and a locking bolt (5) is screwed in the screw hole.

5. The extraction spin tip flattening device for lithium ion battery separator according to claim 1, wherein: The mirror ball (7) is vertically ellipsoidal.

6. The extraction spin tip flattening device for lithium ion battery separator according to claim 3, wherein: The transverse adjustment plate (2) and the fixed plate (1) are both angle steel plates, and the two plate faces of the angle steel plates are both provided with adjustment holes (11).

7. The extraction spin tip flattening apparatus for lithium ion battery separator according to any one of claims 1 to 6, wherein: The tail part of the swing rod (6) is an elbow (61), and the end of the elbow (61) is connected with the mirror ball (7).

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