Pole piece leveling tool
By designing an electrode leveling fixture, the reaction force of the transition roller and the leveling roller is used to level the electrode, which solves the problem of stacking misalignment caused by the curling of single-sided electrode after rolling, thus improving production efficiency and product quality.
Patent Information
- Application Number
- CN202423311197.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Single-sided electrode sheets are prone to curling during the rolling process, which can lead to misalignment during stacking, affecting production efficiency and product qualification rate.
Design an electrode leveling fixture, including a transverse frame and longitudinal legs, equipped with transition rollers and leveling rollers, to level the electrode through reaction force. It is suitable for automatic die cutting equipment and combines an adjusting groove and bolt structure to adjust the height and stability.
This reduced the defect rate of electrode die-cutting, lowered the probability of stacking misalignment, and improved production efficiency and product qualification rate.
Smart Images
Figure CN223616483U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electrode leveling equipment, and in particular to an electrode leveling fixture. Background Technology
[0002] In the battery industry, electrodes typically refer to the electrode plates within a battery, and are one of the core components of a battery. Battery electrodes are thin metal plates used in secondary batteries and battery packs to create the positive and negative electrodes. They serve as the channels for charge transport in the battery, where positive and negative ions travel back and forth. Battery electrodes determine the properties and performance of a battery and are one of the important elements in evaluating battery quality. They are widely used in automobiles, mobile phones, electronic devices, and also play a positive role in smart homes, clean energy, and e-cigarettes.
[0003] Electrode slitting machines play a crucial role in the electrode processing. These machines are specialized equipment used for electrode processing, employing advanced cutting technology to achieve micron-level precision slitting. Furthermore, they are equipped with advanced automated control systems, enabling automatic feeding, positioning, cutting, and unloading, reducing manual intervention and improving production efficiency.
[0004] Currently, to improve the space utilization rate and energy density of stacked soft-pack batteries, the two outermost electrodes of the electrode assembly are generally single-sided electrodes, hereinafter referred to as "single-sided electrodes". A single-sided electrode refers to an electrode where only one side of the copper or aluminum foil current collector is coated with active material, without coating the second side. The outermost layer of this electrode assembly is a bare foil, which avoids the wasted space of the second-side active material that cannot participate in the normal charge and discharge process, as is common in traditional double-sided structures, thus improving the space utilization rate of the active material participating in the charge and discharge reaction. During rolling, the positive and negative electrodes will stretch to a certain extent. For single-sided structures, since one side of the copper or aluminum foil current collector is bare foil and the other side is coated with active material, the two sides experience uneven stress, leading to severe electrode curling. This can cause misalignment during stacking, resulting in the failure of the electrode assembly. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of existing single-sided electrode sheets in the rolling process, such as electrode sheet curling and misalignment during stacking. It provides an electrode sheet leveling fixture with reasonable design, simple structure, low manufacturing cost, and convenient use. The leveling effect is good, which can not only reduce the defect rate of electrode sheet die-cutting size, but also reduce the misalignment rate of electrode sheet stacking, thereby effectively improving the product qualification rate and making it suitable for widespread application.
[0006] This utility model is achieved through the following technical solution: an electrode leveling fixture includes a transverse frame and longitudinal support legs. The longitudinal support legs are vertically connected to the center of the bottom side of the transverse frame, thereby forming a "T"-shaped main support structure with the transverse frame and the longitudinal support legs. This main support structure is installed on an automatic die-cutting machine via the longitudinal support legs. At least three transition rollers are provided inside the transverse frame. The three transition rollers are evenly spaced, and an installation space is formed between every two adjacent transition rollers. A longitudinal frame is provided inside each installation space. The two side beams of the longitudinal frame are connected to the two side beams of the transverse frame. An upper leveling roller and a lower leveling roller are respectively provided at the top and bottom of the longitudinal frame.
[0007] The operator places this fixture on the material input side of the automatic die-cutting equipment and mounts it via longitudinal support legs. After installation, the operator winds the single-sided electrode sheet onto the transition roller and upper leveling roller, or vice versa. The electrode sheet is leveled through the interaction between the transition roller and the leveling roller. Once the electrode sheet is arranged, the operator starts the automatic die-cutting equipment to begin operation. During the conveying process, the electrode sheet is leveled by the counterforce applied by the leveling roller.
[0008] A further improvement of this invention is that strip-shaped adjustment grooves are respectively provided on the two side beams of the longitudinal frame, and the two side beams of the longitudinal frame are detachably connected to the two side beams of the transverse frame through the adjustment grooves and bolts. Through this connection structure of adjustment grooves and bolts, workers can adjust the height of the longitudinal frame according to the actual working conditions.
[0009] A further improvement of this utility model is that a base is provided at the bottom of the longitudinal support leg, and the longitudinal support leg is detachably connected to the automatic die-cutting equipment via the base and bolts. This connection structure of the base and bolts improves the stability between the longitudinal support leg and the automatic die-cutting equipment, thereby enhancing the stability of this fixture. Simultaneously, this structure also facilitates the installation and disassembly of the fixture by operators, greatly improving its flexibility.
[0010] A further improvement of this invention is that the longitudinal frame is positioned at the center of the installation space, specifically between the two transition rollers, thereby ensuring that the distances between the upper and lower leveling rollers and the transition rollers on either side are equal. This design is more rational and further enhances the leveling effect of this fixture.
[0011] A further improvement of this invention is that the size of the transition roller is larger than that of the upper and lower leveling rollers, and the size of the upper and lower leveling rollers is the same. This design is more rational and ensures the leveling effect of this fixture.
[0012] A further improvement of this invention is that both the upper and lower leveling rollers are multi-faceted rollers with smooth ridges. This design allows the leveling rollers to apply a reaction force through their reverse folding function to level the single-sided electrode sheet, thereby further improving the leveling effect of this tooling.
[0013] As can be seen from the above technical solutions, the beneficial effects of this utility model are as follows: This tooling can be used in conjunction with automatic die-cutting equipment. By leveling the electrode sheet before die-cutting, it reduces the breakage of the strip caused by the baffle during die-cutting of warped electrode sheets, thereby reducing the defect rate of die-cut dimensions. At the same time, after the electrode sheet is leveled by this tooling, it is beneficial to the positioning of the electrode sheet before stacking, which greatly reduces the probability of electrode sheet misalignment, thereby effectively improving production efficiency and product qualification rate. Attached Figure Description
[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model;
[0016] Figure 2 yes Figure 1 A schematic diagram of the left-side view structure;
[0017] Figure 3 This is a diagram showing the operational status of a specific embodiment of this utility model.
[0018] In the diagram: 1. Horizontal frame; 2. Longitudinal support leg; 3. Base; 4. Transition roller; 5. Longitudinal frame; 501. Adjustment trough; 6. Upper leveling roller; 7. Lower leveling roller; 8. Single-sided electrode sheet. Detailed Implementation
[0019] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.
[0020] Please refer to the attached document. Figure 1-3The following is a description of a specific embodiment: The electrode flattening fixture of this utility model includes a transverse frame 1 and a longitudinal support leg 2. The longitudinal support leg 2 is vertically connected to the center of the bottom side of the transverse frame 1, so that the transverse frame 1 and the longitudinal support leg 2 form a "T"-shaped main support, and this main support is installed on an automatic die-cutting equipment through the longitudinal support leg 2.
[0021] Specifically, strip-shaped adjustment grooves 501 are respectively provided on the two side beams of the longitudinal frame 5. The two side beams of the longitudinal frame 5 are detachably connected to the two side beams of the transverse frame 1 through the adjustment grooves 501 and bolts. Through this connection structure of the adjustment grooves 501 and bolts, the operator can adjust the height of the longitudinal frame 5 according to the actual working conditions.
[0022] Specifically, a base 3 is provided at the bottom of the longitudinal support leg 2, and the longitudinal support leg 2 is detachably connected to the automatic die-cutting equipment via the base 3 and bolts. This connection structure of the base 3 and bolts improves the stability between the longitudinal support leg 2 and the automatic die-cutting equipment, thereby enhancing the stability of this fixture. At the same time, this structure also facilitates the installation and disassembly of this fixture by the operators, greatly improving its flexibility.
[0023] The interior of the transverse frame 1 is provided with at least three transition rollers 4, which are evenly spaced and form an installation space between every two adjacent transition rollers 4; the interior of each installation space is provided with a longitudinal frame 5, the two side beams of the longitudinal frame 5 are connected to the two side beams of the transverse frame 1, and the top and bottom of the longitudinal frame 5 are respectively provided with an upper leveling roller 6 and a lower leveling roller 7.
[0024] Specifically, the transition roller 4 is larger than the upper leveling roller 6 and the lower leveling roller 7, and the upper leveling roller 6 is the same size as the lower leveling roller 7. This design is more reasonable and can ensure the leveling effect of this fixture.
[0025] Specifically, both the upper leveling roller 6 and the lower leveling roller 7 are multi-faceted rollers with smooth edges. Through this design of the multi-faceted rollers, the leveling rollers can apply a reaction force to level the single-sided electrode sheet 8 through their reverse folding function, thereby further improving the leveling effect of this tooling.
[0026] The operating principle of this fixture is as follows: (Refer to...) Figure 3The operator places this fixture on the material input side of the automatic die-cutting equipment and installs it on the equipment via the longitudinal support leg 2. After installation, the operator winds the single-sided electrode sheet 8 onto the transition roller 4 and the upper leveling roller 6. It should be noted that in actual operation, the single-sided electrode sheet 8 is generally rolled towards the foil side. Therefore, when the foil side is facing upwards, the operator needs to wind the electrode sheet onto the transition roller 4 and the upper leveling roller 6, so that the electrode sheet is leveled through the cooperation between the transition roller 4 and the upper leveling roller 6. After the electrode sheet is arranged, the operator starts the automatic die-cutting equipment to begin operation. During the conveying process, the electrode sheet is leveled by the reaction force applied by the reverse folding function of the upper leveling roller 6. Furthermore, during actual operation, the operator can also adjust the height and lowness of the longitudinal frame 5 by adjusting the trough 501, thereby adjusting the height and lowness of the upper leveling roller 6, which in turn adjusts the magnitude of the reaction force of the upper leveling roller 6, thus ensuring the leveling effect of this fixture.
[0027] When the foil side is facing down, similarly, the operator winds the single-sided electrode 8 onto the transition roller 4 and the lower leveling roller 7. The electrode is leveled by the cooperation between the transition roller 4 and the lower leveling roller 7. Alternatively, when leveling a double-sided electrode, the operator only needs to wind the electrode onto the transition roller 4, without the need for the upper leveling roller 6 or the lower leveling roller 7. The leveling of the electrode is achieved by the cooperation between the transition rollers 4. It can be seen that this fixture is applicable to both single-sided and double-sided electrodes, and has a wide range of applications.
[0028] In one embodiment, the longitudinal frame 5 is positioned at the center of the installation space, specifically between the two transition rollers 4, thereby ensuring that the distance between the upper leveling roller 6 and the lower leveling roller 7 and the transition rollers 4 on either side is equal. This design is more rational and can further improve the leveling effect of this tooling.
[0029] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A electrode leveling fixture, comprising a transverse frame (1) and longitudinal support legs (2), characterized in that, A longitudinal support leg (2) is vertically connected to the center of the bottom side of the transverse frame (1), so that the transverse frame (1) and the longitudinal support leg (2) form a "T"-shaped main support, and this main support is installed on the automatic die cutting equipment through the longitudinal support leg (2); at least three transition rollers (4) are provided inside the transverse frame (1), the three transition rollers (4) are evenly spaced, and an installation space is formed between every two adjacent transition rollers (4); a longitudinal frame (5) is provided inside each installation space, the two side beams of the longitudinal frame (5) are connected to the two side beams of the transverse frame (1), and an upper leveling roller (6) and a lower leveling roller (7) are provided at the top and bottom of the longitudinal frame (5) respectively.
2. The electrode leveling fixture according to claim 1, characterized in that, The longitudinal frame (5) has strip-shaped adjustment grooves (501) on both sides of the beams. The two sides of the longitudinal frame (5) are detachably connected to the two sides of the transverse frame (1) through the adjustment grooves (501) and bolts.
3. The electrode leveling fixture according to claim 2, characterized in that, The bottom end of the longitudinal support leg (2) is provided with a base (3), and the longitudinal support leg (2) is detachably connected to the automatic die cutting equipment through the base (3) and bolts.
4. The electrode leveling fixture according to claim 3, characterized in that, The longitudinal frame (5) is arranged at the center of the installation space, that is, the longitudinal frame (5) is arranged at the center between the two transition rollers (4), so that the distance between the upper leveling roller (6) and the lower leveling roller (7) and the transition rollers (4) on both sides is equal.
5. The electrode leveling fixture according to claim 1 or 4, characterized in that, The size of the transition roller (4) is larger than that of the upper leveling roller (6) and the lower leveling roller (7), and the size of the upper leveling roller (6) is the same as that of the lower leveling roller (7).
6. The electrode leveling fixture according to claim 5, characterized in that, Both the upper leveling roller (6) and the lower leveling roller (7) are multi-faceted rollers with smooth edges.