Mylar anti-folding assembly
By installing the anti-folding component of the Mella piece in the battery cell winding machine, the Mella piece and fixed structure smooth the electrode ears, the problem of the flexural folding of the electrodes is solved, and the yield and quality of the battery cell are improved.
Patent Information
- Application Number
- CN202323658123.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2033-12-29
AI Technical Summary
During the winding of the battery cell, the electrodes are easily folded due to gravity imbalance and the action of the transmission roller, which leads to the unqualified battery cell, which affects the yield rate.
Design a merlot anti-folding assembly, which is installed on one side of two pass rollers, smoothes the ear through the merlot and fixing structure to prevent folding, including the merlot passing through the merlot and fixing on two In terms of the fixing structure, the fixing and adjustment of the microrack sheet is achieved by using components such as brackets, pressing plates, guide plates, screws, etc.
Effectively prevent the ears from folding, improve the yield of the battery cell, and ensure the roundness and alignment of the battery cell.
Smart Images
Figure CN222320324U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium battery production, in particular to a Mylar sheet anti-folding component. Background Art
[0002] The winding of existing battery cells is generally completed by a cell winding machine, which forms a battery cell by stacking, winding, and affixing terminator glue on the positive electrode sheet, negative electrode sheet, and diaphragm in a certain order. When the electrode sheet is being wound, many mechanisms of the cell winding machine need to cooperate, for example, the rolled electrode sheet is unrolled by the unwinding mechanism; the dust and debris attached to the electrode sheet are removed by the dust removal mechanism to ensure the quality of the rolled battery cell; the electrode sheet and diaphragm are wound by the winding mechanism; the tension of the electrode sheet during the winding process is adjusted by the tension control mechanism to ensure the roundness of the wound battery cell; the position of the moving electrode sheet is corrected by the electrode correction mechanism to ensure the alignment of the wound battery cell; after the fixed-length winding of the electrode sheet and diaphragm is completed, the terminator glue is affixed to the rolled battery cell by the glue affixing mechanism, etc. The flow of pole pieces between most mechanisms needs to be assisted by a transmission mechanism. The transmission mechanism is generally configured in combination with the position settings of other mechanisms to change the direction of the pole pieces to make the layout between the mechanisms more reasonable.
[0003] However, in most of the above-mentioned mechanisms, it is necessary to set up transmission rollers to carry out the conveying and direction change of the pole piece. However, because the pole piece is provided with a pole ear, and a part of the pole ear extends out of the pole piece, the part of the pole ear extending out will slightly flip and sag due to the unbalanced force under the action of gravity, and cause the pole piece around the pole ear to deform. Especially for the negative pole piece, because the negative pole piece is relatively soft, the part of the negative pole piece provided with the pole ear will be more deformed by the influence of the pole ear, and this phenomenon will cause the pole ear to fold when it changes direction through the roller of the transmission roller, making the wound battery cell unqualified. Moreover, in the entire process of battery cell winding, the pole ear needs to pass through dozens of transmission rollers from being fixed on the pole piece to the winding mechanism winding the pole piece, so that the pole ear is very easy to fold in the process of moving with the pole piece, which seriously affects the yield of the battery cell winding machine.
[0004] like Figure 1 As shown, in order to solve the above technical problems, an anti-folding plate assembly 102 is generally installed on the roller 101. However, this structure can only smooth the front end of the roller. When the transmission speed of the pole piece a increases, the rear end of the roller is prone to folding of the pole ear due to the sudden absence of the anti-folding plate to smooth it, resulting in a defective rate. Utility Model Content
[0005] The main purpose of the utility model is to provide a Mylar anti-folding component to solve the above technical problems, avoid the tab from folding, and improve the pass rate.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A Mylar sheet anti-bending component is installed on one side of two rollers, comprising a Mylar sheet and a fixed structure, wherein the fixed structure is installed on one side of the roller, the Mylar sheet passes through the two rollers, and one end of the Mylar sheet is fixed on one fixed structure, and the other end is fixed on the other fixed structure. The pole piece moves along the roller, and the Mylar sheet smoothes the pole ear.
[0008] As a preferred technical solution, the fixing structure includes a bracket, a pressure plate and a guide sheet, the guide sheet is mounted on the bracket, and the pressure plate presses the Mylar sheet onto the guide sheet.
[0009] As a preferred technical solution, the fixing structure includes a screw fixing plate, a screw and a handle, the screw fixing plate is fixed on the guide plate, the screw is screwed on the screw fixing plate, and the handle is fixed on the end of the screw.
[0010] As a preferred technical solution, a long hole is provided on the guide plate, and the bolt passes through the long hole and is installed on the bracket.
[0011] As a preferred technical solution, the fixing structure further includes a fixing plate, and the fixing plate is fixed on the equipment.
[0012] As a preferred technical solution, a connecting piece is provided on the fixing plate, a connecting hole is provided on the bracket, and the connecting piece is clamped in the connecting hole.
[0013] As a preferred technical solution, an end cover is provided on the end of the bracket away from the fixing plate.
[0014] The beneficial effect of the utility model is that the Mylar sheet anti-folding assembly fixes the Mylar sheet between two rollers through a fixing structure, so that when the electrode piece passes between the two rollers, the electrode ear can achieve the anti-folding effect under the smoothing effect of the Mylar sheet, thereby improving the yield rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the anti-folding plate assembly involved in the background technology involved in the utility model;
[0016] Figure 2 It is a structural schematic diagram of the Mylar sheet anti-folding assembly involved in the utility model;
[0017] Figure 3It is a structural schematic diagram of the fixing structure involved in the utility model. DETAILED DESCRIPTION
[0018] 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.
[0019] like Figure 2 As shown, a Mylar sheet anti-bending component is installed on one side of two rollers b, including a Mylar sheet 1 and a fixed structure 2. Two fixed structures 2 are provided, and the two fixed structures 2 are respectively installed on one side of the two rollers b. The Mylar sheet 1 passes through the two rollers b, and one end of the Mylar sheet 1 is fixed on one of the fixed structures 2, and the other end is fixed on the other fixed structure 2. The pole piece moves along the roller b, and the Mylar sheet 1 smoothes the pole ear, so that the pole ear can move through the Mylar sheet 1 when the pole piece passes through the two rollers b, thereby achieving an anti-bending effect.
[0020] like Figure 3 As shown, the fixing structure 2 includes a bracket 21, a pressing plate 23, a guide piece 22, a screw fixing plate 24, a screw 25, a handle 26 and a fixing plate 27. The guide piece 22 is installed on the bracket 21. The pressing plate 23 presses the Mylar sheet 1 onto the guide piece 22, thereby fixing the end of the Mylar sheet 1. The screw fixing plate 24 is fixed on the guide piece 22. The guide piece 22 is provided with a long hole 221. The bolt passes through the long hole 221 and is installed on the bracket 21, thereby fine-tuning the position of the guide piece 22. The screw 25 is screwed on the screw fixing plate 24. The handle 26 is fixed on the end of the screw 25. The end of the Mylar sheet 1 It is fixed on the screw rod 25, and the handle 26 is operated to rotate the screw rod 25 to adjust the amplitude of the Mylar sheet 1. The fixing plate 27 is fixed on the winding machine to realize the installation of the Mylar sheet anti-folding assembly on the winding machine. A connecting piece 271 is provided on the fixing plate 27, and a connecting hole 211 is provided on the bracket 21. The connecting piece 271 is clamped in the connecting hole 211. The shape of the connecting piece 271 can be cylindrical, T-shaped or dovetail groove type. The shape of the connecting hole 211 matches the shape of the connecting piece 271. An end cover 28 is provided on the end of the bracket 21 away from the fixing plate 27 to protect the end of the bracket 21.
[0021] 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 Mylar sheet anti-folding assembly, installed on one side of two rollers, characterized in that: It includes a Mylar sheet and a fixed structure, which is installed on one side of a roller. The Mylar sheet passes through two rollers, and one end of the Mylar sheet is fixed on one fixed structure, and the other end is fixed on the other fixed structure. The pole piece moves along the roller, and the Mylar sheet smoothes the pole ear.
2. The Mylar sheet anti-folding assembly according to claim 1, characterized in that: The fixing structure includes a bracket, a pressing plate and a guide sheet. The guide sheet is installed on the bracket, and the pressing plate presses the Mylar sheet onto the guide sheet.
3. The Mylar sheet anti-folding assembly according to claim 2, characterized in that: The fixing structure comprises a screw fixing plate, a screw and a handle, wherein the screw fixing plate is fixed on the guide piece, the screw is screwed on the screw fixing plate, and the handle is fixed on the end of the screw.
4. The Mylar sheet anti-folding assembly according to claim 3, characterized in that: The guide piece is provided with a long hole, and the bolt passes through the long hole and is installed on the bracket.
5. The Mylar sheet anti-folding assembly according to claim 3, characterized in that: The fixing structure also includes a fixing plate, and the fixing plate is fixed on the equipment.
6. The Mylar sheet anti-folding assembly according to claim 5, characterized in that: The fixing plate is provided with a connecting piece, the bracket is provided with a connecting hole, and the connecting piece is clamped in the connecting hole.
7. The Mylar sheet anti-folding assembly according to claim 6, characterized in that: An end cover is arranged on the end of the bracket away from the fixing plate.