Defective pole piece removing equipment

Abstract

The utility model relates to defective pole piece removing equipment which comprises a large plate, a pole piece unwinding assembly, a color code detecting structure, an unwinding tension structure, a driving structure, a length measuring structure, a good pole piece winding assembly and a defective pole piece winding assembly, and the pole piece unwinding assembly, the color code detecting structure, the unwinding tension structure, the driving structure, the length measuring structure, the good pole piece winding assembly and the defective pole piece winding assembly are installed on the large plate. The color code detection structure detects the identification color on a pole piece, the unwinding tension structure adjusts the tension of the pole piece, the driving structure pulls the pole piece to transmit, the length measuring structure detects the transmission length of the pole piece, the good product pole piece winding assembly winds the good product pole piece, and the defective product pole piece winding assembly winds the defective product assembly. According to the defective pole piece removing equipment, the defective pole pieces can be removed, so that good pole piece material rolls are obtained, and the preparation requirements of rear-end battery cells are met.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a device for removing defective pole pieces. Background Art

[0002] In the manufacturing process of lithium batteries, when a winding machine is used to produce a winding core, a roll of positive electrode sheet, a roll of negative electrode sheet and two rolls of diaphragm are placed at different positions of the winding machine, and the winding needle winds the positive and negative electrode sheets together with the diaphragm into a winding core. In order to facilitate the identification of defects, the good electrode sheets will be marked in yellow and the defective electrode sheets will be marked in red. When the winding machine identifies that a certain polarity electrode sheet is defective, the defective electrode sheet will be scrapped together with the diaphragm after single-pole winding. Since the defective electrode sheet will be scrapped together with the diaphragm during single-pole winding, the scrapping of the defective electrode sheet will also cause waste of the diaphragm. Utility Model Content

[0003] The main purpose of the utility model is to provide a defective electrode piece removal device to solve the above-mentioned technical problem and to separate defective electrode pieces from good electrode pieces.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A defective electrode piece rejection device comprises a large plate and an electrode piece unwinding assembly installed on the large plate, a color mark detection structure, an unwinding tension structure, a driving structure, a length measuring structure, a good electrode piece rewinding assembly and a defective electrode piece rewinding assembly, wherein the electrode piece is unwound from the electrode piece unwinding assembly, the color mark detection structure detects the identification color on the electrode piece, the unwinding tension structure adjusts the electrode piece tension, the driving structure pulls the electrode piece for transmission, the length measuring structure detects the transmission length of the electrode piece, the good electrode piece rewinding assembly rewinds the good electrode piece, and the defective electrode piece rewinding assembly rewinds the defective assembly.

[0006] As a preferred technical solution, the pole piece unwinding assembly includes a pole piece unwinding structure, an unwinding deviation correction structure and an unwinding tape splicing structure. The pole piece unwinding structure unwinds the pole piece, the unwinding deviation correction structure corrects the pole piece, and the unwinding tape splicing structure exchanges the pole piece.

[0007] As a preferred technical solution, the unwinding and splicing structure includes a splicing base, a splicing guide block and a splicing pressing block, and the splicing guide block and the splicing pressing block are installed on the splicing base.

[0008] As a preferred technical solution, the good electrode sheet winding assembly includes a good tape connection structure, a good winding structure and a good winding pushing structure. The good tape connection structure exchanges the electrode sheet, the good winding structure winds up the good electrode sheet, and the good winding pushing structure pushes out the good electrode sheet roll.

[0009] As a preferred technical solution, the good product winding and pushing structure includes a motor, a screw rod, a guide rod and a pushing plate. The guide rod is passed through the large plate, the screw rod is engaged with the large plate, the ends of the screw rod and the guide rod are installed on the pushing plate, and the motor drives the screw rod to rotate.

[0010] As a preferred technical solution, the defective pole piece winding assembly includes a defective tape connecting structure, a defective winding structure and a defective winding pushing structure. The defective tape connecting structure exchanges the pole piece, the defective winding structure winds up the defective pole piece, and the defective winding pushing structure pushes out the defective pole piece roll.

[0011] The beneficial effect of the utility model is that the above-mentioned defective electrode sheet rejection equipment can reject defective electrode sheets, thereby obtaining good electrode sheet material rolls to meet the preparation requirements of the back-end battery cells. By setting the color code detection and length measurement components, the boundary between good and defective products can be confirmed, and waste material rejection can be completed conveniently and accurately, reducing electrode sheet loss. It has strong compatibility. By setting a traveling correction structure, it can correct the electrode sheet during transmission, thereby obtaining a well-aligned electrode sheet material roll. It is equipped with a pushing structure, which can automatically unload the wound electrode sheet material roll, reducing the time cost of manual unloading and reducing the electrode sheet loss caused by manual operation, thereby improving the production yield of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the defective electrode rejection device involved in the utility model;

[0013] Figure 2 It is a structural schematic diagram of the good product winding and pushing structure involved in the utility model. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0015] like Figure 1As shown, a defective electrode piece rejection device includes a large plate 1 and an electrode piece unwinding assembly 2 installed on the large plate 1, a color mark detection structure 3, an unwinding tension structure 4, a driving structure 5, a length measuring structure 6, a traveling deviation correction structure 7, a winding tension structure 8, a good electrode piece winding assembly 9 and a defective electrode piece winding assembly 10. The electrode piece is unwound from the electrode piece unwinding assembly 2, the color mark detection structure 3 detects the identification color on the electrode piece, the unwinding tension structure 4 adjusts the electrode piece tension, the driving structure 5 pulls the electrode piece transmission, the length measuring structure 6 detects the length of the electrode piece transmission, the traveling deviation correction structure 7 corrects the electrode piece transmission, the winding tension structure 8 adjusts the tension before the electrode piece is wound, the good electrode piece winding assembly 9 winds up the good electrode piece, and the defective electrode piece winding assembly 10 winds up the defective assembly. The good electrode piece winding assembly 9 and the defective electrode piece winding assembly 10 are arranged equidistantly, which can meet the needs of the electrode piece in the path conversion process, avoid the waste of the electrode piece and well ensure the tension stability of the machine.

[0016] Specifically, the pole piece unwinding assembly 2 includes a pole piece unwinding structure 21, an unwinding deviation correction structure 22 and an unwinding tape connection structure 23. The pole piece unwinding structure 21 unwinds the pole piece, the unwinding deviation correction structure 22 corrects the pole piece, and the unwinding tape connection structure 23 exchanges the pole piece.

[0017] Specifically, the good electrode sheet winding assembly 9 includes a good tape connection structure 91, a good winding structure 92 and a good winding pushing structure 93. The good tape connection structure 91 exchanges the electrode sheet, the good winding structure 92 winds up the good electrode sheet, and the good winding pushing structure 93 pushes out the good electrode sheet roll.

[0018] Specifically, the defective pole piece winding assembly 10 includes a defective tape connecting structure 101, a defective tape winding structure 102 and a defective tape winding pushing structure 103. The defective tape connecting structure 101 exchanges the pole piece, the defective tape winding structure 102 winds up the defective pole piece, and the defective tape winding pushing structure 103 pushes out the defective pole piece roll.

[0019] Among them, Figure 2 As shown, the structures of the unwinding tape splicing structure 23, the good tape splicing structure 91 and the defective tape splicing structure 101 are the same. In the present embodiment, the unwinding tape splicing structure 23 is taken as an example for explanation. The unwinding tape splicing structure 23 includes a tape splicing base 231, a tape splicing guide block 232 and a tape splicing clamping block 233. The tape splicing guide block 232 and the tape splicing clamping block 233 are installed on the tape splicing base 231. The tape splicing guide block 232 is used to guide the movement of the end of the pole piece, and the tape splicing clamping block 233 is used to clamp the end of the pole piece.

[0020] The structures of the good product winding and pushing structure 93 and the defective product winding and pushing structure 103 are the same. In this embodiment, the good product winding and pushing structure 93 is taken as an example for explanation. The good product winding and pushing structure 93 includes a motor 931, a driving wheel 932, a belt 933, a driven wheel 934, a screw 935, a guide rod 936 and a pushing plate 937. The guide rod 936 is inserted into the large plate 1, the screw 935 is engaged with the large plate 1, and the ends of the screw 935 and the guide rod 936 are installed on the pushing plate 937. The driven wheel 934 is fixed to the end of the screw 935. The driving wheel 932 is connected to the driven wheel 934 through the belt 933. The motor 931 drives the driving wheel 932 to rotate, thereby driving the driven wheel 934 to rotate, thereby driving the screw 935 to rotate, thereby driving the pushing plate 937 to move.

[0021] When the color mark detection structure 3 of the above-mentioned defective electrode rejection device detects that the color mark is yellow, the good product winding structure 92 will wind up the good product electrode; when the color mark detection structure 3 detects that the color mark is red, the length measuring structure 6 measures the length of the electrode transmission; when the color mark moves to the good product splicing structure 91, the driving structure 5 stops, the splicing clamping block 233 clamps the electrode, and the operator cuts the electrode, and pulls the defective electrode to the splicing guide block 232 of the defective product splicing structure 101 to guide it into the defective product splicing structure 101, and connects the new end to the end of the splicing clamping block 233 of the defective product splicing structure 101, so that the defective winding structure 102 can wind up the defective electrode.

[0022] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A defective electrode rejection device, characterized in that: It includes a large plate and a pole piece unwinding assembly installed on the large plate, a color mark detection structure, an unwinding tension structure, a driving structure, a length measuring structure, a good pole piece winding assembly and a defective pole piece winding assembly. The pole piece is unwound from the pole piece unwinding assembly, the color mark detection structure detects the identification color on the pole piece, the unwinding tension structure adjusts the pole piece tension, the driving structure pulls the pole piece for transmission, the length measuring structure detects the length of the pole piece transmission, the good pole piece winding assembly winds up the good pole piece, and the defective pole piece winding assembly winds up the defective assembly.

2. The defective electrode rejection device according to claim 1 is characterized in that: The pole piece unwinding assembly includes a pole piece unwinding structure, an unwinding deviation correction structure and an unwinding tape connection structure. The pole piece unwinding structure unwinds the pole piece, the unwinding deviation correction structure corrects the pole piece, and the unwinding tape connection structure exchanges the pole piece.

3. The defective electrode rejection device according to claim 2 is characterized in that: The unwinding and splicing structure comprises a splicing base, a splicing guide block and a splicing pressing block, wherein the splicing guide block and the splicing pressing block are installed on the splicing base.

4. The defective electrode rejection device according to claim 1 is characterized in that: The good electrode sheet winding assembly includes a good tape connection structure, a good winding structure and a good winding pushing structure. The good tape connection structure exchanges the electrode sheet, the good winding structure winds up the good electrode sheet, and the good winding pushing structure pushes out the good electrode sheet roll.

5. The defective electrode rejection device according to claim 4 is characterized in that: The good product winding and pushing structure includes a motor, a screw rod, a guide rod and a pushing plate. The guide rod is inserted into the large plate, the screw rod is meshed with the large plate, the ends of the screw rod and the guide rod are installed on the pushing plate, and the motor drives the screw rod to rotate.

6. The defective electrode rejection device according to claim 1 is characterized in that: The defective electrode sheet winding assembly includes a defective tape connection structure, a defective tape winding structure and a defective tape winding pushing structure. The defective tape connection structure exchanges the electrode sheet, the defective tape winding structure winds up the defective electrode sheet, and the defective tape winding pushing structure pushes out the defective electrode sheet roll.

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