Improved pole piece cutting device capable of achieving four-edge synchronous cutting through manual pressure
The improved manual pressure four-sided synchronous cutting device solves the cutting accuracy problem caused by human error in traditional cutting devices, achieving high-precision and high-efficiency electrode cutting, and improving the accuracy and reliability of resistance testing.
Patent Information
- Application Number
- CN202510921568.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-04
- Publication Date
- 2025-11-21
AI Technical Summary
Traditional manual electrode cutting devices require the operator to cut the four sides of the electrode independently in four separate steps. This leads to deviations in positioning due to manual flipping and repeated alignment errors of the cutter, which affects the geometric accuracy and precision of resistance testing.
By employing a cutting plate, symmetrically arranged pressure bar mechanism, linkage cutter assembly, and synchronous connection mechanism, the electrode sheet is cut simultaneously on all four sides. Through the rectangular gap in the center of the cutting plate, the synchronous connection mechanism, and the vacuum adsorption module, the cutter ensures that the four sides of the electrode sheet are cut at one time, eliminating dimensional accumulation errors and suppressing processing wrinkles and tears.
It achieves micron-level cutting precision, improves the compatibility between electrode sheets and test molds, ensures the reliability and operational efficiency of resistance testing, and reduces maintenance costs.
Smart Images
Figure CN120984971A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of battery manufacturing technology, and more specifically, to an improved manual pressure four-sided synchronous cutting electrode cutting device. Background Technology
[0002] To meet the strategic needs of the rapid development of the global new energy industry and the upgrading of intelligent manufacturing, battery manufacturing technology is evolving towards higher precision, higher efficiency, and higher reliability, and is deeply integrating digital quality control and automated production systems. Electrode cutting, as a fundamental upstream process in lithium-ion battery resistance testing, has a significant impact on battery internal resistance consistency, test yield, and production process stability due to its process stability and precision.
[0003] As a core piece of equipment in battery electrode processing, precision cutting equipment must achieve non-destructive separation and geometric control of electrodes at the micron level. Through innovative mechanical structures, the cutting action is transformed into precise edge morphology, thereby meeting the stringent requirements of resistance testing for electrode dimensional tolerances (≤±0.1mm), edge quality (burrs ≤20μm), and surface integrity. This characteristic makes high-precision cutting equipment irreplaceable in high-end manufacturing fields such as power batteries, energy storage systems, and consumer electronics batteries.
[0004] However, traditional manual cutting devices require the operator to cut the four sides of the electrode sheet independently in four separate steps. In these step-by-step cutting steps, the geometric accuracy is compromised due to manual flipping and positioning errors and repeated tool alignment errors, which will affect the accuracy of the resistance test. Summary of the Invention
[0005] To address the problem that traditional manual electrode cutting devices require operators to cut the four sides of the electrode independently in four separate steps, resulting in inaccurate geometric precision and affecting the accuracy of resistance testing due to manual flipping and positioning deviations and repeated tool alignment errors, this application provides an improved manual pressure four-side synchronous electrode cutting device.
[0006] The embodiments of this application are implemented as follows:
[0007] In a first aspect, this application provides an improved manual pressure four-sided synchronous cutting electrode cutting device, comprising:
[0008] The cutting board has a rectangular slit in the center that matches the size of the battery electrode resistance test mold;
[0009] A pressure bar mechanism is symmetrically arranged on both sides of the cutting board. The pressure bar mechanism includes a pressure bar and a handle. The handle is installed at the top of the pressure bar, and the end of the pressure bar is connected to the edge of the cutting board through a hinge.
[0010] The cutting tool integrated inside the pressure bar has its cutting edge facing the central rectangular slit;
[0011] A synchronous connection mechanism spanning both pressure bars is rigidly connected to the pressure bars to achieve synchronous downward movement of the cutters on both sides;
[0012] In one possible implementation, the depth of the rectangular slit is less than the thickness of the cutting board, and the bottom of the slit is provided with a wear-resistant layer with a low coefficient of friction.
[0013] In one possible implementation, the synchronization connection mechanism is a replaceable linkage component, comprising:
[0014] A gear-rack synchronizer consists of a driving gear fixed to a pressure rod, a rack that runs through the device, and a driven gear forming a meshing transmission system.
[0015] In one possible implementation, the lever mechanism includes a handle and a pressure balance monitoring module that detects the pressure difference between the two sides in real time and triggers a feedback signal.
[0016] In one possible implementation, the hinge incorporates an automatic reset assembly, including a bearing and an elastic element.
[0017] In one possible implementation, the cutting tool has an ultra-hard coating on its surface and is a detachable mounting structure.
[0018] In one possible implementation, the cutting plate is provided with an adjustable limiting groove that includes continuously adjustable positioning blocks.
[0019] In one possible implementation, a vacuum adsorption module is also included, which comprises an array of suction cups distributed at the bottom of the cutting board and a negative pressure generating device.
[0020] In one possible implementation, the suction cup array is a deformable silicone suction cup whose adsorption surface shape adapts to the electrode profile.
[0021] In one possible implementation, the detachable mounting structure includes a magnetic tool holder and a guide groove, enabling quick tool change.
[0022] The technical solution provided in this application can achieve at least the following beneficial effects:
[0023] The improved manual pressure four-sided synchronous cutting electrode cutting device provided in this application completely eliminates the dimensional accumulation error caused by traditional step-by-step operation through the four-sided synchronous cutting structure, achieving micron-level cutting accuracy and fundamentally solving the compatibility problem between the electrode and the test mold. Combined with adaptive vacuum adsorption and dynamic reset hinge, it completely suppresses wrinkles and tears in the processing of ultra-thin electrodes, ensuring the reliability of resistance test data. The innovative modular design improves operating efficiency and reduces maintenance costs, achieving automated equipment performance with a purely mechanical structure, providing a high-performance precision revolution for customized electrode cutting at a high cost-performance ratio. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 This is a schematic diagram of an improved manual pressure four-sided synchronous cutting electrode cutting device shown in an exemplary embodiment of this application;
[0026] Figure 2 This is a schematic front view of an exemplary embodiment of the present application showing an improved manual pressure four-sided synchronous cutting electrode cutting device;
[0027] Figure 3 This is a side view of an exemplary embodiment of the present application illustrating an improved manual pressure four-sided synchronous cutting electrode cutting device; Detailed Implementation
[0028] To make the objectives, implementation methods and advantages of this application clearer, the exemplary implementation methods of this application will be clearly and completely described below with reference to the accompanying drawings of the exemplary embodiments of this application. Obviously, the exemplary embodiments described are only some embodiments of this application, and not all embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.
[0029] It should be noted that the brief descriptions of terms in this application are only for the convenience of understanding the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise stated, these terms should be understood in their ordinary and common meaning.
[0030] The terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar or related objects or entities, and do not necessarily imply a specific order or sequence, unless otherwise specified. It should be understood that such terms are interchangeable where appropriate.
[0031] The terms “comprising” and “having”, and any variations thereof, are intended to cover but not exclude inclusion, for example, a product or device that includes a range of components is not necessarily limited to all of the components that are clearly listed, but may include other components that are not clearly listed or that are inherent to such product or device.
[0032] Before explaining the improved manual pressure four-sided synchronous cutting electrode cutting device provided in the embodiments of this application, the application scenarios and implementation environment of the embodiments of this application will be introduced first.
[0033] To meet the strategic needs of the rapid development of the global new energy industry and the upgrading of intelligent manufacturing, battery manufacturing technology is evolving towards higher precision, higher efficiency, and higher reliability, and is deeply integrating digital quality control and automated production systems. Electrode cutting, as a key upstream process in lithium-ion battery production, directly determines the consistency of battery internal resistance and safety performance. Its technological level has a decisive impact on energy density improvement, manufacturing cost control, and product yield.
[0034] As a core piece of equipment in battery electrode processing, precision cutting equipment must achieve non-destructive separation and geometric control of electrodes at the micron level. Through innovative mechanical structures, the cutting action is transformed into precise edge morphology, thereby meeting the stringent requirements of resistance testing for electrode dimensional tolerances (≤±0.1mm), edge quality (burrs ≤20μm), and surface integrity. This characteristic makes high-precision cutting equipment irreplaceable in high-end manufacturing fields such as power batteries, energy storage systems, and consumer electronics batteries.
[0035] However, traditional manual cutting devices require the operator to cut the four sides of the electrode sheet independently in four separate steps. In these step-by-step cutting steps, the geometric accuracy is compromised due to manual flipping and positioning errors and repeated tool alignment errors, which reduces the accuracy of resistance testing.
[0036] Based on this, this application provides an improved manual pressure four-sided synchronous cutting electrode cutting device, which employs a cutting plate, symmetrically arranged pressure bar mechanisms, a linked cutter assembly, and a synchronous connection mechanism. The cutting plate has a rectangular slit at its center that matches the test mold; the pressure bar mechanism is connected to the cutting plate via hinges, and the cutting cutter is integrated at its end; the synchronous connection mechanism ensures that the pressure bars on both sides are pressed down synchronously, allowing the cutter to cut all four sides of the electrode in one go along the slit. This invention solves the problems of dimensional deviation, surface damage, and cumbersome operation caused by traditional edge-by-edge cutting, significantly improving the electrode cutting accuracy and the reliability of resistance testing.
[0037] Next, the technical solutions of this application and how they solve the aforementioned technical problems will be described in detail through embodiments and in conjunction with the accompanying drawings. The embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application.
[0038] Figure 1 This is a schematic diagram illustrating the structure of an improved manual pressure four-sided synchronous cutting electrode cutting device according to an exemplary embodiment of this application. Figure 2 This is a top view schematic diagram illustrating an improved manual pressure four-sided synchronous cutting electrode cutting device according to an exemplary embodiment of this application. Figure 3 This is a side view of an exemplary embodiment of the present application illustrating an improved manual pressure four-sided synchronous cutting electrode cutting device.
[0039] In one exemplary embodiment, such as Figure 1 , Figure 2 and Figure 3 As shown, an improved manual pressure four-sided synchronous cutting electrode cutting device is provided. In this embodiment, the device may include:
[0040] The cutting board 6 has a rectangular slit 4 in its center that matches the size of the battery electrode resistance test mold;
[0041] A pressure bar mechanism is symmetrically arranged on both sides of the cutting board. The pressure bar mechanism includes a pressure bar 2 and a handle 1. The handle 1 is installed on the top of the pressure bar 2, and the end of the pressure bar 2 is connected to the edge of the cutting board 6 through a hinge 3.
[0042] The cutting blade 7, integrated inside the pressure bar, has its cutting edge facing the central rectangular slit;
[0043] Synchronous connection mechanism 5 spans the pressure bars on both sides. This mechanism is rigidly connected to the pressure bars to achieve synchronous downward movement of the cutters on both sides.
[0044] In one possible implementation, such as Figure 1 , Figure 2 and Figure 3 The cutting device shown is specifically implemented by a cutting base module, a pressure transmission module, and a motion synchronization module working together.
[0045] The cutting substrate module includes a rectangular cutting plate with a rectangular slit in the center that matches a standard test mold. The bottom of the slit is laminated with a low-friction, wear-resistant layer, and the edge is integrated with an adjustable limiting groove. A continuously sliding positioning block is set in the groove to accommodate electrode sheets of different sizes.
[0046] The pressure transmission module is implemented by a symmetrically arranged pressure rod mechanism. The end of the pressure rod is connected to the edge of the cutting board through a double bearing hinge. The hinge has a built-in disc spring to achieve automatic reset. The inner side of the pressure rod is rigidly fixed and the cutting tool can be replaced. The surface of the tool is coated with an ultra-hard coating and the cutting edge is precisely aligned with the upper edge of the rectangular gap.
[0047] The motion synchronization module adopts a rigid linkage structure spanning both sides of the pressure rod, specifically implemented as a gear-rack meshing system or an equal-length linkage mechanism, and is fixed to the middle of the pressure rod by a self-locking bolt to ensure that the synchronous deviation of the displacement of the two-sided tools during the pressing process does not exceed 0.1mm.
[0048] To improve the reliability of electrode fixing, a vacuum adsorption unit is integrated at the bottom of the device, which includes an array of silicone suction cups and a manual negative pressure generator. The suction cups have elastic deformation capabilities to adapt to the contours of irregularly shaped electrodes.
[0049] The tool change system uses a magnetic tool holder and a V-shaped guide groove to achieve toolless tool change, and the magnetic unit generates directional attraction force to ensure repeated installation accuracy.
[0050] During operation, the electrode is placed in the limiting groove and fixed by vacuum adsorption. Pressing down on the handle with both hands drives the pressure rod to rotate around the hinge. The synchronous mechanism forces the blades on both sides to penetrate the rectangular gap at the same speed, completing the cutting of the four sides of the electrode in one go.
[0051] As can be seen, this application achieves precise cutting through a triple-structure collaborative mechanism:
[0052] The rectangular gap serves as the boundary of the physical cutting path, rigidly constraining the tool's movement trajectory to eliminate trajectory deviation; the synchronization mechanism spanning the pressure bar forces both sides of the tool to press down at the same speed, and avoids unilateral motion lag through gear-rack meshing transmission or mechanical coupling of equal-length connecting rods;
[0053] The adjustable limiting groove presets the electrode positioning reference, and combined with the elastic silicone suction cup array of the vacuum adsorption module, it completes full-area pressing while the adsorption surface adapts to the deformation of the electrode contour (curvature range R5mm-R500mm), so that the positioning error approaches zero.
[0054] The dynamic adaptation process relies on the disc spring of the dual-bearing hinge to compensate for the rebound force in real time, ensuring the vertical cutting path of the tool. Meanwhile, the microporous inlay structure formed by the polytetrafluoroethylene wear-resistant layer at the bottom of the gap simultaneously achieves friction resistance suppression (μ < 0.05) and chip anti-adhesion.
[0055] The optimized maintenance design is reflected in the combination of the magnetic tool holder and the V-shaped guide groove, which enables toolless and rapid tool replacement, and the nitriding treatment of the gear-rack assembly of the modular synchronization mechanism (wear amount <3μm after 10,000 cycles), ensuring the synergy between precision life and ease of maintenance.
[0056] It should be understood that although the steps in the flowcharts of the above embodiments are shown sequentially as indicated, these steps are not necessarily executed in the indicated order. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the above embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps.
[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0058] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. An improved manual pressure four-sided synchronous cutting electrode cutting device, characterized in that, include: The cutting board has a rectangular slit in the center that matches the size of the battery electrode resistance test mold; A pressure bar mechanism is symmetrically arranged on both sides of the cutting board. The pressure bar mechanism includes a pressure bar and a handle. The handle is installed at the top of the pressure bar, and the end of the pressure bar is connected to the edge of the cutting board through a hinge. The cutting tool integrated inside the pressure bar has its cutting edge facing the central rectangular slit; A synchronous connection mechanism spanning both pressure bars is rigidly connected to the pressure bars to achieve synchronous downward movement of the cutters on both sides.
2. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, The depth of the rectangular slit is less than the thickness of the cutting board, and a wear-resistant layer with a low coefficient of friction is provided at the bottom of the slit.
3. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, The synchronous connection mechanism is a replaceable linkage component, comprising: A gear-rack synchronizer consists of a driving gear fixed to a pressure rod, a rack that runs through the device, and a driven gear forming a meshing transmission system.
4. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, The pressure lever mechanism includes a handle and a pressure balance monitoring module, which detects the pressure difference between the two sides in real time and triggers a feedback signal.
5. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, The hinge has a built-in automatic reset component, which includes a bearing and an elastic element.
6. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, The cutting tool has an ultra-hard coating on its surface and is a detachable mounting structure.
7. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, The cutting plate is provided with an adjustable limiting groove, which includes continuously adjustable positioning blocks.
8. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 1, characterized in that, It also includes a vacuum adsorption module, which contains an array of suction cups distributed at the bottom of the cutting board and a negative pressure generating device.
9. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 8, characterized in that, The suction cup array is a deformable silicone suction cup, and the shape of its adsorption surface adapts to the electrode profile.
10. The improved manual pressure four-sided synchronous cutting electrode cutting device as described in claim 6, characterized in that, The detachable mounting structure includes a magnetic tool holder and a guide groove, enabling quick tool replacement.