Electrode embossing device

Abstract

This utility model belongs to the field of battery manufacturing technology and discloses an electrode embossing device. The device includes an active embossing roller, a back roller, a servo feed assembly, a pressure sensor assembly, and a grating sensing assembly. The back roller and the active embossing roller are spaced apart. The servo feed assembly is driven to the active embossing roller and can drive the active embossing roller to move in directions approaching and away from the back roller to adjust the distance between them. The pressure sensor detects the pressure on the back roller in directions away from the active embossing roller, and the grating sensing assembly detects the position of the active embossing roller. The servo feed assembly can precisely adjust the distance based on the detected pressure and position. Thus, the servo feed assembly, pressure sensor assembly, and grating sensing assembly form a fully closed-loop control system to control the embossing of the electrode, achieving high processing accuracy and consistency, thereby achieving high surface quality, yield, and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to an electrode embossing device. Background Technology

[0002] With the rapid development of new energy battery technology, the requirements for the processing precision, consistency, and surface quality of the core battery component—the electrode sheet—are becoming increasingly stringent. As a crucial downstream process, the embossing of the wound electrode sheet directly affects the battery's internal resistance, energy density, cycle life, and safety performance. Therefore, unprecedentedly high demands are placed on the position control precision and pressure control performance of the embossing device.

[0003] Currently, cylinder-driven embossing mechanisms are widely used in the industry. However, this traditional approach has significant limitations: First, the cylinder itself is limited by gas compressibility, frictional variations, and response speed, making it difficult to achieve stable, micron-level high-precision position control, resulting in large embossing position deviations. Second, its pressure control typically relies on analog methods such as pressure regulating valves, leading to low pressure setting accuracy, poor stability, and lag in response, and making it difficult to achieve independent and precise coordinated adjustment with position control. These defects result in poor consistency and repeatability of the embossing process, which is one of the core bottlenecks causing low electrode yield, difficulty in adapting to the pace of high-speed production lines, and inability to meet the processing requirements of high-value-added, high-performance electrodes (such as ultra-thin electrodes and high-energy-density electrodes).

[0004] Therefore, there is an urgent need for an electrode embossing device to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an electrode embossing device that can emboss electrodes with high processing precision and consistency, and achieve high surface quality, yield, and production efficiency.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Electrode embossing device, including:

[0008] An active embossing roller, wherein the active embossing roller is rotatably configured;

[0009] A back roller, wherein the back roller and the active embossing roller are spaced apart, and the back roller is rotatably mounted;

[0010] A servo feed assembly is driven to the active embossing roller and can drive the active embossing roller to move in directions approaching and away from the back roller to adjust the distance between the back roller and the active embossing roller.

[0011] A pressure sensor assembly, wherein the pressure sensor is used to detect the pressure on the back roller in a direction away from the active embossing roller, and is signal-connected to the servo feed assembly;

[0012] A grating sensing component is used to detect the position of the active embossing roller and is signal-connected to the servo feed component.

[0013] In some embodiments, the electrode embossing device further includes a fixed frame and a lead screw drive assembly, the lead screw drive assembly being connected between the fixed frame and the active embossing roller, and the servo feed assembly being connected to the lead screw drive assembly.

[0014] In some embodiments, the lead screw drive assembly includes a lead screw mounting base, a lead screw nut, and a lead screw. The lead screw nut is fixedly connected to the mounting bracket, and the lead screw is rotatably inserted through the lead screw nut. One end of the lead screw is connected to the servo feed assembly, and the other end of the lead screw is rotatably connected to the lead screw mounting base.

[0015] The electrode embossing device also includes an embossing roller mounting component, which is rotatably connected to the active embossing roller and fixedly connected to the lead screw fixing seat.

[0016] In some embodiments, the grating sensing component includes a grating ruler and a reading head. The grating ruler is fixedly connected to the fixing frame and is arranged parallel to the lead screw. The reading head is fixedly connected to the embossing roller mounting component and is capable of reading the position information on the grating ruler.

[0017] In some embodiments, the back roller and the active embossing roller are spaced apart along the thickness direction of the electrode sheet to be embossed, and the back roller and the fixing frame are fixedly connected.

[0018] In some embodiments, the servo feed assembly includes a servo drive motor, which is drively connected to the lead screw and is used to drive the active embossing roller to move in directions approaching and away from the back roller.

[0019] In some embodiments, the electrode embossing device further includes a drive motor, which is fixedly connected to the fixed frame and driven to the back roller, and is used to drive the back roller to rotate.

[0020] In some embodiments, the pressure sensor assembly is connected between the back roller and the retainer, and the pressure sensor assembly is located on the side of the back roller away from the active embossing roller.

[0021] In some embodiments, the electrode embossing device further includes an air knife assembly for blowing and cleaning the electrode to be embossed.

[0022] In some embodiments, the electrode embossing apparatus further includes a control component that is signal-connected to the servo feed component, the pressure sensor component, and the grating sensing component. The control component is configured to receive signals from the pressure sensor component and the grating sensing component and to send a signal to the servo feed component to adjust the position of the active embossing roller.

[0023] The above-mentioned technical solution has the following advantages or beneficial effects: In this electrode embossing device, the servo feed component can accurately adjust the distance between the active embossing roller and the back roller, and the pressure sensor component and the grating sensing component can respectively detect the pressure and position. Thus, through the servo feed component, the pressure sensor component and the grating sensing component, a fully closed-loop control system can be formed. At the same time, the embossing condition of the electrode is controlled by the two data of pressure and position, so as to achieve high processing accuracy and consistency, thereby achieving high surface quality, yield and production efficiency. Attached Figure Description

[0024] Figure 1 This is a perspective view of the electrode embossing device in an embodiment of this utility model;

[0025] Figure 2 This is a top view of the electrode embossing device in an embodiment of this utility model;

[0026] Figure 3 This is a front view of the electrode embossing device in an embodiment of this utility model;

[0027] Figure 4 This is a three-dimensional schematic diagram of the rotating installation of the active embossing roller in an embodiment of this utility model;

[0028] Figure 5 This is a frontal view of the rotating installation of the active embossing roller in an embodiment of this utility model;

[0029] Figure 6 This is a three-dimensional schematic diagram of the rotating installation of the back roller in an embodiment of this utility model;

[0030] Figure 7 This is a frontal view of the rotating installation of the back roller in an embodiment of this utility model.

[0031] In the picture:

[0032] 1. Fixing frame; 2. Guide rail; 3. Active motor; 4. Lead screw fixing seat; 5. Lead screw nut; 6. Active embossing roller; 7. Back roller; 8. Servo drive motor; 9. Active motor mounting component; 10. Grating ruler; 11. Reader head mounting component; 12. Reader head; 13. Pressure sensor assembly; 14. Fixed shaft mounting component; 15. Fixed shaft; 16. Air knife clamping block; 17. Air knife assembly; 18. Dust removal mounting component; 19. Dust removal blowing pipe; 20. Electrode; 21. Embossing roller mounting component; 22. Back roller mounting component; 23. Coupling. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," and "abutting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] The following is based on Figures 1 to 7 The electrode embossing device provided in the embodiments of this utility model is introduced.

[0038] like Figures 1 to 3 As shown, in this embodiment, the electrode embossing device includes an active embossing roller 6, a back roller 7, a servo feed assembly, a pressure sensor assembly 13, and a grating sensing assembly. Both the active embossing roller 6 and the back roller 7 are rotatably mounted, and the distance between them is adjustable. The outer circumferential surface of the active embossing roller 6 has multiple embossing protrusions. When the electrode 20 to be embossed enters between the active embossing roller 6 and the back roller 7, by controlling the distance between them, the embossing protrusions can form embossing on the surface of the electrode 20. The servo feed assembly is driven to the active embossing roller 6 and can drive it to move towards and away from the back roller 7, thereby adjusting the distance between them.

[0039] The pressure sensor assembly 13 is connected to the back roller 7 and can detect the pressure exerted on the back roller 7 in a direction away from the active embossing roller 6, thereby reflecting all the forces between the active embossing roller 6 and the back roller 7, including the deformation resistance of the electrode 20, the deformation force of the mechanical structure, and any abnormal impacts. The pressure sensor assembly 13 is signal-connected to the servo feed assembly. When the pressure detected by the pressure sensor assembly 13 represents an abnormal working condition, the servo feed assembly can actively adjust the distance between the active embossing roller 6 and the back roller 7 based on the signal emitted by the pressure sensor assembly 13, thereby correcting the abnormal working condition. The grating sensor assembly is used to detect the position of the active embossing roller 6, thereby reflecting the actual distance between the active embossing roller 6 and the back roller 7. The grating sensor assembly is also signal-connected to the servo feed assembly. The servo feed assembly can receive the actual distance detected by the grating sensor assembly and can actively adjust the distance between the active embossing roller 6 and the back roller 7 based on the difference between the preset distance and the actual distance, thereby improving the process quality.

[0040] In this electrode embossing device, the servo feed component can precisely adjust the distance between the active embossing roller 6 and the back roller 7, and the pressure sensor component 13 and the grating sensing component can respectively detect pressure and position. Thus, through the servo feed component, the pressure sensor component 13 and the grating sensing component, a fully closed-loop control system can be formed. At the same time, the embossing of the electrode 20 is controlled by the two data of pressure and position, so as to achieve high processing accuracy and consistency, thereby achieving high surface quality, yield and production efficiency.

[0041] Optionally, in this embodiment, the electrode embossing device further includes a control component, which is signal-connected to the servo feed component, the pressure sensor component 13, and the grating sensing component. The control component can receive signals from the pressure sensor component 13 and the grating sensing component, and send signals to the servo feed component to adjust the position of the active embossing roller 6.

[0042] For example, the control component includes a PLC, and the pressure sensor component 13 monitors the pressure in real time and transmits the detected pressure data to the PLC. The PLC pre-stores optimal process pressure data. By comparing the detected real-time pressure data with the optimal process pressure data, it sends corresponding signals (approach, hold, or move away) to the servo feed component based on the resulting deviation. When the real-time pressure data is less than the optimal process pressure data, the PLC sends an approach signal to the servo feed component. Upon receiving the approach signal, the servo feed component moves the active embossing roller 6 in a direction close to the back roller 7, thereby reducing the distance between them and increasing the actual pressure. When the real-time pressure data falls within the range of the optimal process pressure data, the PLC sends a hold signal to the servo feed component. Upon receiving the hold signal, the servo feed component stops driving the active embossing roller 6, maintaining the distance between the active embossing roller 6 and the back roller 7. When the real-time pressure data is greater than the optimal process pressure data, the PLC sends a move away signal to the servo feed component. Upon receiving the distance signal, the servo feed assembly moves the active embossing roller 6 away from the back roller 7, thereby increasing the distance between them and reducing the actual pressure.

[0043] Similarly, the grating sensor component detects the distance in real time and transmits the detected distance data to the PLC. The PLC pre-stores optimal process spacing data. By comparing the detected real-time distance data with the optimal process spacing data, it sends corresponding signals (approach, hold, or move away) to the servo feed component based on the deviation. When the real-time distance data is less than the optimal process spacing data, the PLC sends an approach signal to the servo feed component. Upon receiving the approach signal, the servo feed component moves the active embossing roller 6 in a direction closer to the back roller 7, thereby reducing the distance between them. When the real-time distance data falls within the range of the optimal process spacing data, the PLC sends a hold signal to the servo feed component. Upon receiving the hold signal, the servo feed component stops driving the active embossing roller 6, maintaining the distance between the active embossing roller 6 and the back roller 7. When the real-time distance data is greater than the optimal process spacing data, the PLC sends a move away signal to the servo feed component. Upon receiving the move away signal, the servo feed component moves the active embossing roller 6 in a direction away from the back roller 7, thereby increasing the distance between them.

[0044] Specifically, in this embodiment, the electrode embossing device further includes a fixed frame 1 and a screw drive assembly. The aforementioned active embossing roller 6, back roller 7, servo feed assembly, pressure sensor assembly 13, and grating sensing assembly are all connected to the fixed frame 1, and the screw drive assembly is also connected to the fixed frame 1. The screw drive assembly connects the servo feed assembly and the active embossing roller 6, enabling the servo feed assembly to move the active embossing roller 6. Optionally, the fixed frame 1 is connected to a guide rail 2, which is arranged parallel to the axis of the active embossing roller 6. The active embossing roller 6 is adjustablely connected to the guide rail 2, thereby facilitating adjustment of the installation position of the active embossing roller 6 along its axial direction.

[0045] More specifically, in this embodiment, the lead screw drive assembly includes a lead screw fixing seat 4, a lead screw nut 5, and a lead screw. The lead screw nut 5 is fixedly connected to the fixing frame 1, and the lead screw is rotatably inserted through the lead screw nut 5. One end of the lead screw is connected to the servo feed assembly, and the other end of the lead screw is rotatably connected to the lead screw fixing seat 4. Figures 3 to 5 As shown, the electrode embossing device also includes an embossing roller mounting component 21, which is rotatably connected to the active embossing roller 6 and fixedly connected to the lead screw fixing seat 4. The servo feed assembly includes a servo drive motor 8, which is driven by the lead screw and can drive the lead screw to rotate, thereby causing the active embossing roller 6 to move in a direction close to or away from the back roller 7. The servo drive motor 8 and the lead screw transmission assembly can move the position of the active embossing roller 6 more precisely, and the servo drive motor 8 can respond quickly, thereby adjusting the position of the active embossing roller 6 within 4ms of the pressure sensor assembly 13 or the grating reading assembly issuing a corresponding signal.

[0046] Reference Figure 3 As shown, in this embodiment, the grating sensing component includes a grating ruler 10 and a reader 12. The grating ruler 10 is fixedly connected to the mounting frame 1 and is arranged parallel to the lead screw. The reader 12 is fixedly connected to the embossing roller mounting component 21 and can read the position information on the grating ruler 10. Compared with conventional position or distance sensors, the grating ruler 10 and the reader 12 can detect the position with ±1µm, thereby cooperating with the servo feed component to achieve high-precision adjustment of the position of the active embossing roller 6. This not only helps to improve processing accuracy, surface quality and yield, but also enables high repeatability and product quality consistency in batch processing. Optionally, the embossing roller mounting component 21 is connected to a reader mounting component 11, and the position of the reader 12 is adjustablely mounted on the reader mounting component 11, thereby facilitating the debugging of the grating sensing component.

[0047] Furthermore, such as Figure 6 , Figure 7As shown, the electrode embossing device also includes a back p-roller mounting component 22, which is fixedly connected to the fixed frame 1 and rotatably connected to the back roller 7. A pressure sensor assembly 13 is connected between the back roller 7 and the fixed frame 1, and is located on the side of the back roller 7 away from the active embossing roller 6. When the active embossing roller 6 and the electrode 20 to be embossed apply pressure to the back roller 7, the pressure sensor assembly 13, located between the back roller 7 and the fixed frame 1, can detect all the applied force, thereby achieving high-precision detection. Furthermore, it can work in conjunction with the grating sensing component and the servo feed component to achieve ±0.1N precision control between the active embossing roller 6 and the back roller 7.

[0048] The electrode embossing device also includes a drive motor 3, which is fixedly connected to the fixed frame 1 and driven by the back roller 7. The drive motor 3 drives the back roller 7 to rotate. Specifically, the fixed frame 1 is connected to a drive motor mounting component 9, and the aforementioned drive motor 3 is fixedly connected to the drive motor mounting component 9, thereby achieving a fixed connection with the fixed frame 1. A coupling is connected between the output end of the drive motor 3 and the back roller 7, thereby enabling a drive connection between the drive motor 3 and the back roller 7.

[0049] The electrode embossing device also includes an air knife assembly 17, which can clean the electrode 20 by blowing. Specifically, the fixing frame 1 is connected to a fixed shaft mounting part 14, which in turn is connected to a fixed shaft 15. The air knife assembly 17 is connected to an air knife clip, which is angle-adjustably connected to the fixed shaft 15, thereby directing the air outlet of the air knife assembly 17 toward the electrode 20 for cleaning.

[0050] Furthermore, along the movement direction of the electrode 20, the air knife assembly 17 is located on one side of the active embossing roller 6, and a dust removal blowing pipe 19 is also provided on the other side of the active embossing roller 6. The dust removal blowing pipe 19 is fixedly installed on the fixed frame 1 through the dust removal mounting part 18, and can blow and clean the electrode 20 to further prevent dust and other foreign objects from affecting the embossing process.

[0051] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electrode sheet embossing device characterized by, include: Active embossing roller (6), which is rotatably arranged; A back roller (7) and the active embossing roller (6) are spaced apart, and the back roller (7) is rotatably arranged; A servo feed assembly is connected to the active embossing roller (6) and can drive the active embossing roller (6) to move in directions approaching and away from the back roller (7) to adjust the distance between the back roller (7) and the active embossing roller (6). Pressure sensor assembly (13), the pressure sensor is used to detect the pressure on the back roller (7) in a direction away from the active embossing roller (6), and is signal-connected to the servo feed assembly; A grating sensing component is used to detect the position of the active embossing roller (6) and is signal-connected to the servo feed component.

2. The electrode embossing device according to claim 1, characterized in that, The electrode embossing device also includes a fixed frame (1) and a screw drive assembly. The screw drive assembly is connected between the fixed frame (1) and the active embossing roller (6), and the servo feed assembly is connected to the screw drive assembly.

3. The electrode embossing device according to claim 2, characterized in that, The lead screw drive assembly includes a lead screw mounting base (4), a lead screw nut (5), and a lead screw. The lead screw nut (5) is fixedly connected to the mounting frame (1). The lead screw is rotatably inserted through the lead screw nut (5). One end of the lead screw is connected to the servo feed assembly, and the other end of the lead screw is rotatably connected to the lead screw mounting base (4). The electrode embossing device also includes an embossing roller mounting component (21), which is rotatably connected to the active embossing roller (6) and fixedly connected to the lead screw fixing seat (4).

4. The electrode embossing device according to claim 3, characterized in that, The grating sensing component includes a grating ruler (10) and a reading head (12). The grating ruler (10) is fixedly connected to the fixing frame (1) and is arranged parallel to the lead screw. The reading head (12) is fixedly connected to the embossing roller mounting component (21) and can read the position information on the grating ruler (10).

5. The electrode embossing device according to claim 2, characterized in that, The back roller (7) and the active embossing roller (6) are spaced apart along the thickness direction of the electrode sheet (20) to be embossed, and the back roller (7) and the fixed frame (1) are fixedly connected.

6. The electrode embossing device according to claim 3, characterized in that, The servo feed assembly includes a servo drive motor (8), which is connected to the lead screw and is used to drive the active embossing roller (6) to move in directions approaching and away from the back roller (7).

7. The electrode embossing device according to claim 6, characterized in that, The electrode embossing device also includes an active motor (3), which is fixedly connected to the fixed frame (1) and driven to the back roller (7). The active motor (3) is used to drive the back roller (7) to rotate.

8. The electrode embossing device according to claim 5, characterized in that, The pressure sensor assembly (13) is connected between the back roller (7) and the fixing frame (1), and the pressure sensor assembly (13) is located on the side of the back roller (7) away from the active embossing roller (6).

9. The electrode embossing device according to claim 1, characterized in that, The electrode embossing device also includes an air knife assembly (17), which is used to blow and clean the electrode (20) to be embossed.

10. The electrode embossing apparatus according to any one of claims 1-9, characterized in that, The electrode embossing device further includes a control component, which is signal-connected to the servo feed component, the pressure sensor component (13), and the grating sensing component. The control component is configured to receive signals from the pressure sensor component (13) and the grating sensing component, and to send a signal to the servo feed component to adjust the position of the active embossing roller (6).

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