Lithium battery positive and negative pole piece separator

Abstract

The utility model relates to the technical field of lithium battery recovery, in particular to a separator for positive and negative pole pieces of a lithium battery. The lithium battery positive and negative pole piece separator comprises a rack, a piece pulling assembly, a pole piece table and two storage boxes, the pull tab assembly comprises a pull tab seat, a positive electrode separation roller, a negative electrode separation roller, a film separation roller and two air knives; the pulling piece seat is fixed on the rack; the pole piece table comprises a base and a placement box, the base is fixed on the rack, the placement box is arranged on the base and is positioned below the pull piece assembly, and the placement box is used for placing a lithium battery cell; when in use, a lithium battery cell is placed in the placement box, the lithium battery cell sequentially bypasses the positive electrode separation roller, the negative electrode separation roller and the thin film separation roller, the thin film is continuously lifted upwards, the positive electrode plate and the negative electrode plate are separated from the thin film from two sides and respectively fall into the two storage boxes, and the positive electrode plate and the negative electrode plate adhered to the thin film are scraped off by an air knife. And separation of positive and negative plates and films is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery recycling technical field, concretely relates to a lithium battery positive and negative pole piece separator. BACKGROUND

[0002] When waste lithium batteries are recycled, due to the particularity of the winding cell structure, a separator is usually used to separate and recycle the positive and negative pole pieces.

[0003] A lithium battery winding cell positive and negative pole separator is disclosed in the patent with the announcement number CN220086157U, which comprises a workbench, a clamping component for lithium battery winding cells is arranged above the workbench, positive and negative pole separators for separating the positive and negative poles of the cell are arranged on the left and right sides of the clamping component, a film separator is arranged directly above the clamping component, and three pressing components are arranged directly above the positive pole separator, the film separator and the negative pole separator.

[0004] Since the recycled lithium batteries are usually used for a period of time, the positive and negative pole pieces may be bonded to the film, and it is difficult to separate the positive and negative pole pieces and the film by only using the separator roller, therefore, it is necessary to design a lithium battery positive and negative pole piece separator to ensure the separation of the positive and negative pole pieces and the film. UTILITY MODEL CONTENTS

[0005] The utility model aims to at least solve one of the technical problems existing in the prior art, and provides a lithium battery positive and negative pole piece separator.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lithium battery positive and negative pole piece separator, comprising a rack, a pull piece assembly, a pole piece table, two storage boxes;

[0007] The pull piece assembly, the pole piece table and the storage box are all arranged on the rack;

[0008] The pull piece assembly comprises a pull piece seat, a positive pole separator roller, a negative pole separator roller, a film separator roller and two air knives; the pull piece seat is fixed on the rack, the positive pole separator roller, the negative pole separator roller and the film separator roller are all rotatably arranged on the pull piece seat, the two air knives are symmetrically arranged on the left and right sides of the film separator roller, and the positive pole separator roller and the negative pole separator roller are symmetrically arranged below the two air knives;

[0009] The pole piece table comprises a base and a placing box; the base is fixed on the rack, and the placing box is arranged on the base and located below the pull piece assembly; the placing box is used for placing lithium battery cells;

[0010] The two storage boxes are respectively arranged on the left and right sides of the pole piece table.

[0011] Further, the middle radius of the positive electrode separation roller is greater than the radius of the two ends, and the middle radius decreases towards the two ends.

[0012] Further, the positive electrode separation roller is uniformly distributed with a plurality of circular stripes.

[0013] Further, the middle radius of the negative electrode separation roller is greater than the radius of the two ends, and the middle radius decreases towards the two ends.

[0014] Further, the negative electrode separation roller is uniformly distributed with a plurality of circular stripes.

[0015] Further, the air knife comprises an air inlet for externally connecting a blowing device.

[0016] Further, the air knife comprises a support plate and a knife body, the support plate is fixedly arranged on the pull tab seat, and the knife body is fixedly arranged below the support plate.

[0017] Further, the left and right sides of the inside of the placing box are provided with a plurality of clamping groove patterns, and the plurality of clamping groove patterns are uniformly distributed in the placing box from top to bottom.

[0018] Further, the pole piece table further comprises a movable plate, a screw rod and a fixed plate, the movable plate is movably arranged in the placing box, the fixed plate is fixedly arranged on the base and located in front of the movable plate, a screw hole is formed in the fixed plate, the screw rod is threadedly connected with the screw hole, and the front end of the screw rod is rotatably arranged on the movable plate.

[0019] As can be seen from the above description of the utility model, compared with the prior art, the lithium battery positive and negative pole piece separator of the utility model comprises a rack, a pull tab assembly, a pole piece table and two storage boxes. The pull tab assembly comprises a pull tab seat, a positive electrode separation roller, a negative electrode separation roller, a film separation roller and two air knives. The pole piece table comprises a base and a placing box. In use, the lithium battery cell is placed in the placing box, and the lithium battery cell is sequentially wound around the positive electrode separation roller, the negative electrode separation roller and the film separation roller. The film is continuously pulled up, the positive pole piece and the negative pole piece are separated from the film on both sides, and fall into the two storage boxes respectively. The positive and negative pole pieces adhered to the film are scraped off by the air knife, and the separation of the positive and negative pole pieces and the film is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a three-dimensional structure schematic view of the lithium battery positive and negative pole piece separator in the preferred embodiment of the utility model;

[0021] Fig. 2 It is a three-dimensional structure schematic view of the pull tab assembly and the pole piece table in the preferred embodiment of the utility model;

[0022] Fig. 3 It is the main view schematic drawing of the pull piece assembly and the pole piece table in the preferred embodiment of the utility model;

[0023] The figure mark explanation: 1 frame, 2 pull piece assembly, 3 pole piece table, 4 storage box, 201 pull piece seat, 202 positive electrode separation roller, 203 negative electrode separation roller, 204 film separation roller, 205 air knife, 206 air inlet, 207 support plate, 208 knife body, 301 base, 302 placing box, 303 movable plate, 304 screw rod, 305 fixed plate, 306 clamping groove. DETAILED DESCRIPTION

[0024] The technical schemes in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] In the description of the utility model, it needs to be explained that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeving / connection", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Referring to Figs. 1-3 The preferred embodiment of the utility model, a lithium battery positive and negative pole piece separator, including frame 1, pull piece assembly 2, pole piece table 3, two storage boxes 4;

[0028] The pull piece assembly 2, the pole piece table 3, the storage box 4 are all arranged on the frame 1;

[0029] The pull-tab assembly 2 comprises a pull-tab seat 201, a positive electrode separation roller 202, a negative electrode separation roller 203, a film separation roller 204 and two air knives 205; the pull-tab seat 201 is fixed on the rack 1, the positive electrode separation roller 202, the negative electrode separation roller 203 and the film separation roller 204 are rotatably arranged on the pull-tab seat 201, and the two air knives 205 are symmetrically arranged on the two sides of the film separation roller 204; the positive electrode separation roller 202 and the negative electrode separation roller 203 are symmetrically arranged below the two air knives 205.

[0030] The pole piece table 3 comprises a base 301 and a placing box 302; the base 301 is fixed on the rack 1, and the placing box 302 is arranged on the base 301 and located below the pull-tab assembly 2; the placing box 302 is used for placing the lithium battery cell.

[0031] The two storage boxes 4 are arranged on the left and right sides of the pole piece table 3 respectively.

[0032] The lithium battery positive and negative pole piece separator of the utility model comprises a rack 1, a pull-tab assembly 2, a pole piece table 3 and two storage boxes 4; the pull-tab assembly 2 comprises a pull-tab seat 201, a positive electrode separation roller 202, a negative electrode separation roller 203, a film separation roller 204 and two air knives 205; the pole piece table 3 comprises a base 301 and a placing box 302; when in use, the lithium battery cell is placed in the placing box 302, and the lithium battery cell is sequentially wound around the positive electrode separation roller 202, the negative electrode separation roller 203 and the film separation roller 204; the film is continuously pulled up; the positive pole piece and the negative pole piece are separated from the film from both sides and fall into the two storage boxes 4 respectively; the positive and negative pole pieces adhered to the film are scraped off by the air knives 205, so that the positive and negative pole pieces and the film are separated.

[0033] As a preferred embodiment of the utility model, the following additional technical features can be further provided:

[0034] In the embodiment, the middle radius of the positive electrode separation roller 202 is greater than the radius of both ends, and the middle radius decreases towards both ends; the structure of the positive electrode separation roller 202 with the middle wide and both ends narrow is more conducive to extruding the positive pole piece to separate from the film.

[0035] In the embodiment, the middle radius of the positive electrode separation roller 202 is greater than the radius of both ends, and the middle radius decreases towards both ends; the structure of the positive electrode separation roller 202 with the middle wide and both ends narrow is more conducive to extruding the positive pole piece to separate from the film.

[0036] In the embodiment, the middle radius of the negative electrode separation roller 203 is greater than the radius of both ends, and the middle radius decreases towards both ends; the structure of the negative electrode separation roller 203 with the middle wide and both ends narrow is more conducive to extruding the negative pole piece to separate from the film.

[0037] In the embodiment, the negative separation roller 203 is uniformly provided with a plurality of circular stripes. The circular stripes on the negative separation roller 203 can increase the extrusion force on the negative plate.

[0038] In the embodiment, the air knife 205 comprises an air inlet 206 for externally connecting the air blowing device. The air knife 205 externally connects the air blowing device through the air inlet 206, blows air to the positive plate and the negative plate through the air knife 205, and assists in blowing off the positive plate and the negative plate.

[0039] In the embodiment, the air knife 205 comprises a support plate 207 and a blade body 208. The support plate 207 is fixedly arranged on the pull tab seat 201, and the blade body 208 is fixedly arranged below the support plate 207. The blade body 208 is fixed on the pull tab seat 201 through the support plate 207, and the positive plate and the negative plate are scraped off through the blade body 208, which is matched with air blowing assistance to ensure that the positive plate and the negative plate are separated from the film.

[0040] In the embodiment, the inside left and right sides of the placing box 302 are provided with a plurality of clamping groove patterns 306, and the plurality of clamping groove patterns 306 are uniformly distributed in the placing box 302 from top to bottom. The two sides of the lithium battery cell are clamped by the clamping groove patterns 306 to apply a certain resistance to the two sides of the lithium battery cell, prevent the lithium battery cell from being pulled up as a whole when the film is pulled up, and ensure that the lithium battery cell is orderly pulled up and the positive plate and the negative plate are orderly separated from the film.

[0041] In the embodiment, the plate table 3 further comprises a movable plate 303, a screw rod 304, and a fixed plate 305. The movable plate 303 is movably arranged in the placing box 302, the fixed plate 305 is fixedly arranged on the base 301 and located in front of the movable plate 303, the fixed plate 305 is provided with a threaded hole, the screw rod 304 is threadedly connected with the threaded hole, and the front end of the screw rod 304 is rotatably arranged on the movable plate 303. The position of the movable plate 303 in the placing box 302 is adjusted by rotating the screw rod 304 to limit the front end of the lithium battery cell, so that the lithium battery cell is more closely attached to the placing box 302, and the subsequent separation of the positive and negative plates is facilitated.

[0042] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A lithium battery positive and negative electrode separator, characterized in that, It comprises a rack (1), a pull tab assembly (2), a pole piece table (3), two storage boxes (4); The pull tab assembly (2), the pole piece table (3), and the storage box (4) are arranged on the rack (1); The pull tab assembly (2) comprises a pull tab seat (201), a positive electrode separation roller (202), a negative electrode separation roller (203), a film separation roller (204), and two air knives (205); the pull tab seat (201) is fixed on the rack (1); the positive electrode separation roller (202), the negative electrode separation roller (203), and the film separation roller (204) are rotatably arranged on the pull tab seat (201); the two air knives (205) are symmetrically arranged on the two sides of the film separation roller (204); and the positive electrode separation roller (202) and the negative electrode separation roller (203) are symmetrically arranged below the two air knives (205). The pole piece table (3) comprises a base (301) and a placing box (302); the base (301) is fixed on the rack (1); the placing box (302) is arranged on the base (301) and below the pull tab assembly (2); and the placing box (302) is used for placing a lithium battery cell. The two storage boxes (4) are respectively arranged on the left and right sides of the pole piece table (3).

2. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The middle radius of the positive electrode separation roller (202) is greater than the radii of the two ends, and the middle radius decreases towards the two ends.

3. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The positive electrode separation roller (202) is uniformly provided with a plurality of circular stripes.

4. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The middle radius of the negative electrode separation roller (203) is greater than the radii of the two ends, and the middle radius decreases towards the two ends.

5. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The negative electrode separation roller (203) is uniformly provided with a plurality of circular stripes.

6. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The air knife (205) comprises an air inlet (206); and the air inlet (206) is used for connecting an air blowing device.

7. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The air knife (205) comprises a support plate (207) and a blade body (208); the support plate (207) is fixedly arranged on the pull tab seat (201); and the blade body (208) is fixedly arranged below the support plate (207).

8. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The placing box (302) is provided with a plurality of clamping groove patterns (306) on the left and right sides of the inside; and the plurality of clamping groove patterns (306) are uniformly distributed in the placing box (302) from top to bottom.

9. The lithium battery positive and negative electrode sheet separator according to claim 1, characterized in that, The pole piece table (3) further comprises a movable plate (303), a screw rod (304), and a fixed plate (305); the movable plate (303) is movably arranged in the placing box (302); the fixed plate (305) is fixedly arranged on the base (301) and in front of the movable plate (303); the fixed plate (305) is provided with a threaded hole; the screw rod (304) is threadedly connected with the threaded hole; and the front end of the screw rod (304) is rotatably arranged on the movable plate (303).

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