Height detection device and composite current collector detection system
By designing a height detection device including a support frame, a guide shaft and a rolling assembly, the problem of bumps measuring on the surface of the composite fluid is solved, and fast and accurate measurement is achieved, and product quality and production efficiency are improved.
Patent Information
- Application Number
- CN202421505651.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-28
AI Technical Summary
During the production process of existing composite fluids, the metal liquid surface is unstable during the vacuum evaporation coating process, resulting in splash defects. The existing testing technology cannot quickly measure the convex points on the surface of composite fluids, affecting the subsequent slitting process and product quality.
A height detection device is provided, including a support frame, a guide shaft and a rolling assembly. Using the cooperation between the rolling assembly and the guide shaft, a rapid measurement of the height of the convex point on the surface of the composite fluid is achieved to avoid external forces from destroying the film layer.
It realizes rapid and accurate measurement of the height of the convex points on the surface of the composite fluid collector, determines the slitting position, and improves the finished product quality and production efficiency of the composite fluid collector.
Smart Images
Figure CN222670964U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of composite current collector detection, and relates to a height detection device and a composite current collector detection system. Background Art
[0002] As a substitute for aluminum foil and copper foil for the positive and negative electrodes of lithium batteries, composite current collector materials are widely used in the preparation of lithium battery products. Composite current collectors can increase the energy density of lithium batteries, reduce the weight of lithium batteries, and reduce the risk of fire caused by puncture of lithium batteries.
[0003] Vacuum evaporation coating is the main production method of composite current collector film materials. However, during the vacuum evaporation coating process, the metal liquid level is often unstable and the liquid level boils, causing metal droplets to splash onto the surface of the film material or the roller surface, forming defects such as splashes, bumps, scratches, etc. on the coated products, which have an adverse effect on the appearance of the composite current collector and the subsequent coating process.
[0004] In the existing composite current collector manufacturing process, the bumps on the composite current collector surface are usually squeezed by rolling, so that the bumps are deformed by the squeezing force, thereby reducing the bump height. However, the squeezing of the bumps can easily lead to pinhole defects on the composite current collector surface, and even reduce the electrical performance of the composite current collector.
[0005] In addition, existing testing technologies are unable to quickly measure the bumps on the surface of the composite current collector, which in turn affects the subsequent slitting process and reduces the quality of the composite current collector product. Utility Model Content
[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a height detection device and a composite current collector detection system, which can quickly measure the height and position of the bumps on the surface of the composite current collector, avoid external forces from damaging the surface of the membrane layer, facilitate determining the cutting position, and improve the finished product quality and production efficiency of the composite current collector.
[0007] To achieve this purpose, the utility model adopts the following technical solutions:
[0008] In the first aspect, the utility model provides a height detection device, which includes a support frame, a guide shaft and a rolling assembly. The guide shaft is slidably connected to the support frame, and the guide shaft is also connected to the rolling assembly. The movement of the rolling assembly drives the guide shaft to move axially. A displacement detection assembly is also provided on the rolling assembly or the guide shaft, and the displacement detection assembly is used to detect the displacement of the rolling assembly along the axial direction of the guide shaft.
[0009] The utility model places the height detection device above the object to be measured, so that the rolling component is close to the object to be measured. After the defects such as convex points, raised scratches, etc. on the surface of the object to be measured contact the rolling component, the rolling component generates an axial displacement upward along the guide shaft. The displacement is accurately obtained by using the displacement detection component to obtain the height of the surface defect of the object to be measured, thereby realizing rapid measurement, and the detection format can be freely proportioned according to needs. It can be used to detect the height of the surface defect of the object to be measured in a static state or a moving state, and will not affect the moving state, thereby effectively improving the applicability of the device.
[0010] In the utility model, the guide shaft guides the moving direction of the rolling assembly, ensuring that the rolling assembly moves along the axial direction of the guide roller after contacting the object to be measured, thereby avoiding oblique deviation and causing detection data error.
[0011] As a preferred technical solution of the utility model, a return spring is also sleeved on the guide shaft, and two ends of the return spring are respectively connected to the support frame and the rolling assembly.
[0012] When the distance measuring roller cannot meet the reset requirement through free fall, the utility model sets a reset spring so that the reset spring acts as a power element of the rolling assembly and the guide shaft to provide reset power. In order to make the rolling assembly move smoothly under the push of the object to be measured, the reset spring should be made smaller than the rolling assembly under the premise of meeting the reset requirement.
[0013] As a preferred technical solution of the utility model, the rolling assembly includes a roller bracket and a distance measuring roller that are rotatably connected, the roller bracket is fixedly connected to the guide shaft, and the displacement detection assembly is fixed to the roller bracket.
[0014] As a preferred technical solution of the utility model, the roller bracket is connected to the ranging roller shaft.
[0015] In the second aspect, the utility model provides a composite current collector detection system, which comprises a unwinding device, a guide roller, a winding device, a host computer, at least one frame, and at least one height detection device as described in the first aspect; the unwinding device, the guide roller and the winding device are arranged in sequence along the composite current collector conveying direction, the frame is arranged above the guide roller, the height detection device is fixed on the frame so that the rolling assembly faces the composite current collector on the guide roller, and the host computer is electrically connected to the height detection device.
[0016] In the utility model, an unwinding device unwinds the composite current collector, so that the composite current collector is transported to a rewinding device for rewinding after passing through a guide roller. The frame is used to carry a height detection device, and has good shock resistance to avoid detection errors caused by vibration during operation. The height detection device is placed above the guide roller, and the detection width is freely adjusted according to the film thickness of the composite current collector to quickly detect the height of the convex points on the surface of the composite current collector passing through the guide roller, and whether the height of the convex points of the composite current collector meets the requirements is determined according to the detection data. At the same time, external force is avoided from damaging the surface of the film layer, and the cutting position can be determined by the convex point detection result of the entire width, thereby improving the finished product quality and production efficiency of the composite current collector and avoiding adverse effects on the composite current collector processing technology.
[0017] As a preferred technical solution of the utility model, at least two height detection devices are arranged on the frame, and the height detection devices are arranged at equal intervals along the extension direction of the guide roller.
[0018] The utility model can determine the positions of the convex points on the surface of the composite current collector by arranging a plurality of height detection devices on the same frame.
[0019] As a preferred technical solution of the utility model, the number of the racks is at least two, and at least two of the racks are located above the guide roller and are arranged along the radial direction of the guide roller.
[0020] As a preferred technical solution of the utility model, at least two of the frames are arranged at intervals along the radial direction of the guide roller.
[0021] The angle between the connecting lines of two adjacent frames and the center point of the guide roller is 15° to 45°.
[0022] As a preferred technical solution of the utility model, two adjacent height detection devices located on different frames are staggeredly distributed along the radial direction of the guide roller.
[0023] Taking the vertical plane passing through the axis of the guide roller as the reference plane, the orthographic projections of the distance measuring rollers of two adjacent height detection devices located on different frames on the reference plane partially overlap.
[0024] As a preferred technical solution of the utility model, the composite current collector detection system also includes a metering device, which is electrically connected to the host computer and is used to detect the rolled-up length of the composite current collector and upload it to the host computer.
[0025] The metering device in the utility model is used to record the rolled length of the composite current collector, and forms horizontal and vertical coordinate parameters with the height detection device so as to determine the specific position of the convex point.
[0026] The system refers to an equipment system, a device system or a production device.
[0027] Compared with the prior art, the beneficial effects of the utility model are:
[0028] The utility model provides a height detection device and a composite current collector detection system, which rewind or cut the composite current collector by taking up and unwinding a roll, so that the composite current collector passes through the contact surface between the height detection device and the guide roller, causing an upward displacement of the rolling component of the height detection device, and detecting the displacement of the rolling component, so as to obtain the height of the composite current collector protrusion, realize rapid measurement, avoid external force damaging the membrane surface, and determine the cutting position through the whole-surface protrusion detection result, thereby improving the finished product quality and production efficiency of the composite current collector and avoiding adverse effects on the composite current collector processing technology. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 A schematic diagram of the structure of a height detection device provided in Example 1-1 of the utility model;
[0030] Figure 2 A schematic diagram of the structure of the composite current collector detection system provided in Examples 1-2 of the present utility model;
[0031] Figure 3 A schematic diagram of the structure of the composite current collector detection system provided in Examples 1-4 of the present utility model;
[0032] Figure 4 Schematic diagram of staggered distribution of distance measuring rollers in embodiments 1-4 of the present utility model;
[0033] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;
[0034] Figure 6 A schematic diagram of the structure of a height detection device provided in Example 2-1 of the utility model;
[0035] Figure 7 A schematic diagram of the contact between the height detection device and the bump provided in Application Example 1 of the utility model;
[0036] Figure 8 A schematic diagram of the surface of the composite current collector provided in Application Example 1 of the utility model;
[0037] Fig. 9 This is a flow chart of the detection method provided for Application Example 2 of the present utility model.
[0038] Among them, 100-composite current collector; 1-unwinding device; 2-winding device; 3-guide roller; 4-frame; 5-height detection device; 6-roller bracket; 7-distance measuring roller; 8-displacement detection component; 9-reset spring; 10-rotating shaft; 11-bump; 12-guide shaft. DETAILED DESCRIPTION
[0039] It should be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" and "several" mean two or more.
[0040] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0041] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.
[0042] In a specific embodiment, the utility model provides a height detection device, including a support frame, a guide shaft and a rolling assembly, wherein the guide shaft is slidably connected to the support frame, and the guide shaft is also connected to the rolling assembly, and the movement of the rolling assembly drives the guide shaft to move axially, and a displacement detection assembly is also provided on the rolling assembly or the guide shaft, and the displacement detection assembly is used to detect the displacement of the rolling assembly along the axial direction of the guide shaft. During the application process, the height detection device is placed above the object to be measured, so that the rolling assembly is close to the object to be measured, and after the defects such as bumps, raised scratches on the surface of the object to be measured contact the rolling assembly, the rolling assembly is translated upward along the axial direction of the guide shaft, and the displacement detection assembly is used to accurately obtain the displacement, so that the height of the surface defect of the object to be measured can be obtained, and rapid measurement can be achieved, and the detection format can be freely proportioned according to demand. When the rolling assembly in the utility model contacts the surface of the object to be measured, wear or damage should be avoided, and a roller or ball structure can be used. Those skilled in the art can adjust it according to the actual properties of the object to be measured and the detection requirements.
[0043] In some embodiments, a reset spring is also sleeved on the guide shaft, and the two ends of the reset spring are respectively connected to the support frame and the rolling assembly. In the utility model, the guide shaft guides the moving direction of the rolling assembly, ensuring that the rolling assembly moves along the axial direction of the guide roller after contacting the object to be tested, avoiding oblique deviation and causing detection data errors. The reset spring serves as a power element for the rolling assembly and the guide shaft, providing reset power, and the force of the reset spring is relatively small, so that the rolling assembly moves smoothly under the push of the object to be tested.
[0044] In some embodiments, the rolling assembly includes a roller bracket and a distance measuring roller that are rotatably connected, the roller bracket is fixedly connected to the guide shaft, and the displacement detection assembly is fixed to the roller bracket. In the utility model, the movement of the distance measuring roller after contacting the object to be measured includes axial translation and rotation, wherein the rotation of the distance measuring roller does not drive the roller bracket to move axially along the guide shaft, and the axial translation of the distance measuring roller can drive the roller bracket to move axially along the guide shaft, and the displacement detection assembly detects the displacement to obtain the height of the surface defect of the object to be measured. During the application process, the distance measuring roller approaches the object to be measured, and the defects such as convex points, raised scratches, etc. on the surface of the object to be measured touch the distance measuring roller, prompting the distance measuring roller to move away from the object to be measured, thereby driving the roller bracket to move axially along the guide roller, and the displacement detection assembly measures the movement of the roller bracket to obtain the height of the surface defect of the object to be measured. The distance measuring roller adopts a single-cylinder roller structure made of hard polymer material, or a composite sleeve structure, that is, the inner cylinder is made of carbon steel and the outer cylinder is made of polymer material. Polyurethane rubber familiar to technicians in this field can be selected to ensure the mechanical strength of the distance measuring roller and avoid wear or damage to the surface of the composite current collector.
[0045] Furthermore, the roller bracket is connected to the rotating shaft of the ranging roller. Specifically, the roller bracket is also provided with a rotating shaft, and the ranging roller is sleeved on the rotating shaft. And the width of the ranging roller is 1 to 15 mm, which improves the detection accuracy of the surface defect position of the object to be measured. The ranging roller can be, for example, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm or 15mm, but is not limited to the listed values, and other values not listed within the numerical range are also applicable.
[0046] Specifically, the displacement detection component is a grating micrometer, an ultrasonic displacement sensor or a magnetic grating displacement sensor.
[0047] In another specific embodiment, the utility model provides a composite current collector detection system, comprising a unwinding device, a guide roller, a winding device, a host computer, at least one frame, and at least one height detection device provided in the above specific embodiment; the unwinding device, guide roller and winding device are arranged in sequence along the composite current collector conveying direction, the frame is arranged above the guide roller, the height detection device is fixed on the frame so that the rolling assembly faces the composite current collector on the guide roller, and the host computer is electrically connected to the height detection device.
[0048] Exemplarily, a composite current collector detection method performed using the composite current collector detection system provided in the above-mentioned specific embodiment includes: unwinding the composite current collector, rewinding it after passing through a guide roller, detecting the axial displacement of the rolling component along a direction perpendicular to the composite current collector conveying direction, and uploading it to a host computer to determine the height of the bumps on the surface of the composite current collector.
[0049] The initial state of the rolling component in the utility model can be in contact with or infinitely close to the guide roller. When the initial state of the rolling component is in contact with the guide roller, during the composite current collector conveying process, the rolling component always maintains a certain initial height (i.e., the thickness of the composite current collector), and then generates an upward displacement after contacting the convex point. The height of the convex point can be obtained by the difference between the displacement and the initial height. In addition, those skilled in the art can also pre-set a threshold value according to the actual requirements of the qualified convex point height to ensure that the spacing between the rolling component and the guide roller is the threshold value. When a convex point below the threshold passes by, the rolling component will not generate axial translation. On the contrary, the rolling component will generate axial translation, and its displacement is the convex point height.
[0050] The composite current collector described in the utility model is a current collector with a "sandwich" structure, which is well known to those skilled in the art and is composed of a polymer layer located in the middle and a conductive film located on both sides. Among them, the material of the conductive film is selected from one or more of aluminum, copper, nickel, titanium, silver, and its alloys or metal oxides; the material of the polymer layer is selected from one or more of polyamide, polyterephthalate, polyimide, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polydimethylphenylene amine, polypropylene, polyoxymethylene, polydopamine, tannic acid, epoxy resin, phenolic resin, polytetrafluoroethylene, polyvinylidene fluoride or polyethylene glycol. The preparation process of the composite current collector usually includes providing a substrate, vacuum evaporation, slitting and winding, etc. The production process is complicated and the product quality is not easy to control. The composite current collector detection system provided by the utility model can be integrated into the manufacturing equipment of the composite current collector. Exemplarily, it can be integrated into a rewinder or a slitter to detect the bumps on the surface of the composite current collector and cut the qualified positions, which is conducive to improving the quality of the composite current collector product.
[0051] In some embodiments, at least two height detection devices are provided on the frame, and the height detection devices are arranged at equal intervals along the extension direction of the guide roller. The utility model can adjust the number and spacing of the height detection devices on the frame according to the size of the composite current collector, so as to determine the position of the convex points on the surface of the composite current collector and improve the position detection accuracy. That is, when the height detection device detects that the height of the convex point is unqualified, the coordinates of the unqualified convex point in the width direction of the composite current collector can be confirmed according to the specific position of the height detection device that detects the height of the convex point.
[0052] Furthermore, the support frame of the height detection device is detachably connected to the frame. The utility model does not specifically limit the connection method between the support frame and the frame, and any connection method known to those skilled in the art can be used, including but not limited to threaded connection, slot connection, buckle connection or pin connection, etc.
[0053] In some embodiments, the number of the racks is at least two, and at least two of the racks are located above the guide roller and are arranged along the radial direction of the guide roller. Further, at least two of the racks are arranged at intervals along the radial direction of the guide roller. Preferably, the angle between the connecting lines of the two adjacent racks and the center point of the guide roller is 15° to 45°, for example, it can be 15°, 16°, 18°, 20°, 24°, 25°, 30°, 35°, 38°, 40°, 43° or 45°, but it is not limited to the listed values, and other unlisted values within the numerical range are also applicable. The utility model reduces the spacing between adjacent racks by controlling the angle between the connecting lines of the two adjacent racks and the center point of the guide roller within the above range, thereby shortening the detection distance in the direction of composite current collector transportation, improving the detection accuracy, preventing the missed detection of convex points in the length direction of the composite current collector, and also avoiding the problem that the spacing between adjacent racks becomes larger due to the excessive angle, which hinders the transportation of the composite current collector on the guide roller. In order to comprehensively detect the surface of the composite current collector on the guide roller, technical personnel in this field can adjust the specific structure of the frame according to actual conditions and set the frame to extend along the extension direction of the guide roller so that the detection surface of the height detection device can completely cover the composite current collector on the guide roller.
[0054] In some embodiments, two adjacent height detection devices located on different frames are staggeredly distributed along the radial direction of the guide roller.
[0055] Specifically, taking the vertical plane passing through the axis of the guide roller as the reference plane, the orthographic projections of the distance measuring rollers of two adjacent height detection devices located on different frames on the reference plane overlap, and preferably, the linear length of the overlapping portion is 0.5 to 1 mm, for example, it can be 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm or 1 mm, but it is not limited to the listed values, and other values not listed in the numerical range are also applicable. The utility model controls the overlapping length within the above range, on the one hand, to ensure that the detection surface of the height detection device on the frame can fully cover the composite current collector on the guide roller, avoiding missing the convex points in the width direction of the composite current collector, and on the other hand, it is convenient to determine the position of the convex points, thereby improving the positioning accuracy.
[0056] The numerical range described in the present invention not only includes the point values listed above, but also includes any point values between the above numerical ranges that are not listed. Due to space limitations and for the sake of simplicity, the present invention no longer exhaustively lists the specific point values included in the range.
[0057] In some embodiments, the composite current collector detection system further includes a metering device, the metering device is electrically connected to the host computer, and the metering device is used to detect the winding length of the composite current collector and upload it to the host computer. The metering device is used to record the winding length of the winding device, and form horizontal and vertical coordinate parameters with the height detection device to determine the specific position of the convex point. The utility model does not specifically limit the structure and type of the metering device, and a contact metering device commonly used in the art can be used, or a non-contact metering device can be used. Exemplarily, the metering device includes a metering wheel and an angle detection component, and the metering wheel is set to be tangent to a roller of the winding device, so that the rotation of the roller drives the metering wheel to rotate (non-contact metering device), or the metering wheel is set to allow the composite current collector entering the winding device to pass through the metering wheel (contact metering device), and the angle detection component is used to obtain the rotation angle of the metering wheel, and upload it to the host computer, the host computer receives and analyzes the rotation angle of the metering wheel, and then obtains the winding length of the composite current collector. The host computer uses a commercially available industrial control computer. Of course, it can be understood that other types of meter devices that can measure the winding length of the winding device also fall within the protection scope and disclosure scope of the present utility model. Therefore, other forms of meter devices disclosed in the prior art or not disclosed in the new technology can also be used in the present utility model.
[0058] Exemplarily, a composite current collector detection method using the composite current collector detection system provided in the above embodiment includes:
[0059] (1) unwinding the composite current collector, passing it through a guide roller, and then winding it up;
[0060] (2) detecting the axial displacement of the rolling assembly perpendicular to the conveying direction of the composite current collector and uploading it to the host computer to determine the height of the convex points on the surface of the composite current collector;
[0061] (3) Using a meter device to detect the rolled-up length of the composite current collector, and uploading it to the host computer, the host computer analyzes the displacement of the rolling assembly and the rolled-up length of the composite current collector to determine the position of the convex points on the surface of the composite current collector.
[0062] During the application process, the utility model first pre-sets the qualified convex point height in the upper computer, and adjusts the distance between the distance measuring roller and the surface of the composite current collector according to the preset value. When the convex point is higher than the preset value, the convex point touches the distance measuring roller when passing through the guide roller, causing the axial displacement, and the displacement is detected to obtain an accurate convex point height value, and based on the winding length detected by the metering device, the specific occurrence position of the convex point is obtained; when the convex point is lower than the preset value, it can smoothly pass through the gap between the distance measuring roller and the composite current collector, is a qualified convex point, and can be directly wound up.
[0063] Specifically, the linear distance between the distance measuring roller of the rolling component and the composite current collector on the guide roller is ≤0.05mm. When the height of the convex point on the surface of the composite current collector is ≤0.05mm, it can smoothly pass through the gap between the guide roller and the distance measuring roller and is considered a qualified product; when the height of the convex point on the surface of the composite current collector is greater than 0.05mm, the distance measuring roller is displaced upward, and it is an unqualified product. The displacement detection component can accurately measure the specific height of the convex point and upload it to the host computer. At the same time, according to the winding length measured by the metering device, the horizontal and vertical coordinates of the convex point are formed in the host computer to confirm the specific position of the convex point. The displacement detection accuracy of the rolling component is ≤0.001mm, which ensures the accuracy of the measurement result. The utility model detects the height of the convex point on the surface of the composite current collector, screens out unqualified convex points, and avoids the problem of puncturing the current collector film during subsequent rewinding.
[0064] Example 1-1
[0065] This embodiment provides a height detection device, such as Figure 1As shown, it includes a support frame 200, a guide shaft 12 and a rolling assembly 300. One end of the guide shaft 12 is slidably connected to the support frame 200, and the other end of the guide shaft 12 is connected to the rolling assembly 300. The rolling assembly 300 includes a roller bracket 6 and a distance measuring roller 7 that are rotatably connected. The roller bracket 6 is also provided with a rotating shaft 10, and the distance measuring roller 7 is sleeved on the rotating shaft 10. The roller bracket 6 is fixedly connected to the guide shaft 12. The width of the distance measuring roller is 6mm. The axial translation of the distance measuring roller 7 drives the roller bracket 6 to move axially along the guide shaft 12. The rolling assembly 300 is also provided with a displacement detection assembly 8 for measuring the axial displacement of the roller bracket 6.
[0066] Example 1-2
[0067] This embodiment provides a composite current collector detection system, such as Figure 2 As shown, it includes an unwinding device 1, a winding device 2, a guide roller 3, a host computer (not shown in the accompanying drawings) and a frame 4. The unwinding device 1, the guide roller 3 and the winding device 2 are arranged in sequence along the conveying direction of the composite current collector 100. The frame 4 is located above the guide roller 3, and a height detection device 5 is arranged on the frame 4. Its specific structure is exactly the same as that of Example 1-1 and is not described here. The distance measuring roller 7 of the rolling assembly 300 of the height detection device 5 faces the composite current collector 100 on the guide roller 3. The host computer is electrically connected to the height detection device 5 to upload the detected displacement of the distance measuring roller 7 to the host computer.
[0068] Examples 1-3
[0069] This embodiment provides a composite current collector detection system, which differs from Embodiment 1-2 in that it also includes a metering device, which is electrically connected to the host computer and is used to detect the winding length of the composite current collector 100 and upload it to the host computer to form the horizontal and vertical coordinates of the bump in the host computer to determine the specific position of the bump. The remaining structure is the same as Embodiment 1-2.
[0070] Examples 1-4
[0071] This embodiment provides a composite current collector detection system, such as Figure 3As shown, it includes an unwinding device 1, a winding device 2, a guide roller 3, a host computer (not shown in the accompanying drawings) and three frames 4. The unwinding device 1, the guide roller 3 and the winding device 2 are arranged in sequence along the conveying direction of the composite current collector 100. The three frames 4 are all located above the guide roller 3, and are arranged at intervals along the radial direction of the guide roller 3, and the angle between the connecting lines of two adjacent frames 4 to the center point of the guide roller 3 is 30°. Each frame 4 is provided with a plurality of height detection devices 5, and its specific structure is exactly the same as that of Example 1-1, and is not described here. And a plurality of height detection devices 5 are arranged at equal intervals on the frame 4 along the extension direction of the guide roller 3, so that the distance measuring roller 7 faces the composite current collector 100 on the guide roller 3. The host computer is electrically connected to each height detection device 5 to upload the detected displacement of the distance measuring roller 7 to the host computer. In this embodiment, the number of racks 4 is increased, and the radial distance between two adjacent racks 4 along the guide roller 3 is small, so that the detection distance is shortened, ensuring accurate detection of the height of the convex points on the composite current collector surface 100 on the guide roller 3, preventing missed detection, and avoiding obstruction to the transportation of the composite current collector 100. Figure 4 and Figure 5 As shown, three height detection devices 5 located on different frames 4 are staggered along the guide roller 3, and the vertical plane passing through the axis of the guide roller is used as the reference plane. The orthographic projections of the distance measuring rollers 7 located on different frames 4 on the reference plane are partially overlapped, so as to prevent the convex points in the length direction of the composite current collector from being missed, so that the detection surface fully covers the composite current collector on the guide roller, and at the same time improves the accuracy of the convex point position detection.
[0072] Examples 1-5
[0073] This embodiment provides a composite current collector detection system, which is different from Embodiments 1-4 in that it also includes a metering device, which is electrically connected to the host computer and is used to detect the winding length of the composite current collector 100 and upload it to the host computer. The remaining structures are the same as those of Embodiments 1-4. This embodiment obtains the ordinate of the convex point by detecting the specific position of the height detection device of the unqualified convex point, and obtains the abscissa of the convex point through the winding length detected by the metering device, thereby realizing accurate positioning of the convex point position.
[0074] Example 2-1
[0075] This embodiment provides a height detection device, which is different from the embodiment 1-1 in that: Figure 6 As shown, a return spring 9 is also sleeved on the guide shaft 12, and two ends of the return spring 9 are respectively connected to the support frame 200 and the roller bracket 6, and the rest of the structure is the same as that of Example 1-1.
[0076] Example 2-2
[0077] The present embodiment provides a composite current collector detection system, including an unwinding device, a winding device, a guide roller, a host computer (not shown in the accompanying drawings) and a frame. The unwinding device, the guide roller and the winding device are arranged in sequence along the conveying direction of the composite current collector. A height detection device is arranged on the frame, and its specific structure is exactly the same as that of Example 2-1, which will not be described here. The distance measuring roller of the rolling assembly of the height detection device 5 faces the composite current collector on the guide roller. The host computer is electrically connected to the height detection device to upload the detected displacement of the distance measuring roller to the host computer.
[0078] Example 2-3
[0079] This embodiment provides a composite current collector detection system, which differs from Embodiment 2-2 in that it also includes a metering device, which is electrically connected to the host computer and is used to detect the winding length of the composite current collector and upload it to the host computer, forming the horizontal and vertical coordinates of the bump in the host computer to determine the specific position of the bump. The rest of the structure is the same as Embodiment 2-2.
[0080] Embodiment 2-4
[0081] The present embodiment provides a composite current collector detection system, including an unwinding device, a winding device, a guide roller, a host computer (not shown in the attached drawings) and three frames. The unwinding device, the guide roller and the winding device are arranged in sequence along the conveying direction of the composite current collector. The three frames are all located above the guide roller, and are arranged at intervals along the radial direction of the guide roller, and the angle between the connecting lines of two adjacent frames to the center point of the guide roller is 20°. Each frame is provided with multiple height detection devices, and its specific structure is exactly the same as that of Example 2-1, which will not be described here. Multiple height detection devices are arranged at equal intervals along the extension direction of the guide roller, so that the distance measuring roller faces the composite current collector on the guide roller. The host computer is electrically connected to each height detection device to upload the detected displacement of the distance measuring roller to the host computer. In this embodiment, the radial spacing between two adjacent frames along the guide roller is small, so that the detection distance is shortened, and the convex points in the length direction of the composite current collector are prevented from being missed, while avoiding obstruction to the conveying of the composite current collector. Three height detection devices located on different frames are staggered along the radial direction of the guide roller. The vertical plane passing through the axis of the guide roller is used as the reference plane. The positive projections of the measuring rollers of the three height detection devices on the reference plane partially overlap, so that the detection surface fully covers the composite current collector on the guide roller, realizing full surface detection of the composite current collector and improving the accuracy of bump position detection.
[0082] Embodiment 2-5
[0083] This embodiment provides a composite current collector detection system, which is different from Embodiments 2-4 in that it also includes a metering device, which is electrically connected to the host computer and is used to detect the winding length of the composite current collector and upload it to the host computer. The remaining structures are the same as those of Embodiments 2-4. This embodiment obtains the ordinate of the convex point by detecting the specific position of the height detection device of the unqualified convex point, and obtains the abscissa of the convex point through the winding length detected by the metering device, thereby realizing accurate positioning of the convex point position.
[0084] Application Example 1
[0085] This application example uses the composite current collector detection system provided in Examples 1-4 to detect the height of the convex points 11 on the surface of the composite current collector, which specifically includes the following steps:
[0086] (1) Winding the composite current collector 100 onto a roller system of a slitting machine for unwinding and rewinding;
[0087] (2) starting the slitting machine so that the composite current collector 100 continues to move and is transported by the guide roller 3;
[0088] (3) Figure 7 and Figure 8 As shown, when the convex point 11 on the surface of the composite current collector 100 passes through the gap between the guide roller 3 and the distance measuring roller 7, the convex point 11 lifts the distance measuring roller 7, causing the distance measuring roller 7 to move upward, and the displacement detection component 8 is used to detect the displacement of the distance measuring roller 7;
[0089] (4) The detected displacement is uploaded to the host computer, and it is determined whether the height of the bump 11 is ≤0.05 mm (preset qualified height of the bump 11). If so, the bump 11 of the composite current collector 100 meets the requirements. Otherwise, the bump 11 of the composite current collector 100 is unqualified, and the position of the bump is determined by detecting the position of the bump height detection device 5.
[0090] Application Example 2
[0091] This application example uses the composite current collector detection system provided in Examples 1-5 to detect the height and position of the bumps 11 on the surface of the composite current collector 100, such as Fig. 9 As shown, the specific steps include:
[0092] (1) Winding the composite current collector 100 into a roller system of a rewinding machine for unwinding and rewinding;
[0093] (2) starting the slitting machine so that the composite current collector 100 continues to move and is transported by the guide roller 3;
[0094] (3) When the convex point 11 on the surface of the composite current collector 100 passes through the gap between the guide roller 3 and the distance measuring roller 7, the convex point 11 lifts the distance measuring roller 7, causing the distance measuring roller 7 to move upward, and the displacement of the distance measuring roller 7 is detected by the displacement detection component 8, and the detected displacement is uploaded to the host computer;
[0095] (4) Using a meter device to detect the winding length of the composite current collector 100 in the winding device, and uploading it to the host computer;
[0096] (5) The host computer analyzes the displacement of the rolling component and the winding length of the composite current collector 100 to determine the position of the bump 11 on the surface of the composite current collector 100, and when the height of the bump 11 is greater than 0.05 mm (preset qualified height of the bump 11), the host computer outputs point data that does not meet the requirements; when the height of the bump 11 is less than or equal to 0.05 mm (preset qualified height of the bump 11), the host computer does not output point data, wherein the output data is determined by confirming the ordinate value with the position of the height detection device 5 that detects the bump, and confirming the abscissa value with the winding length, so as to determine the position of the bump.
[0097] The applicant declares that the above is only a specific implementation method of the present utility model, but the protection scope of the present utility model is not limited thereto. The technicians in the relevant technical field should understand that any changes or substitutions that can be easily thought of by the technicians in the relevant technical field within the technical scope disclosed in the present utility model fall within the protection scope and disclosure scope of the present utility model.
Claims
1. A height detection device, characterized in that: The height detection device includes a support frame, a guide shaft and a rolling assembly. The guide shaft is slidably connected to the support frame, and the guide shaft is also connected to the rolling assembly. The movement of the rolling assembly drives the guide shaft to move axially. A displacement detection assembly is also provided on the rolling assembly or the guide shaft. The displacement detection assembly is used to detect the displacement of the rolling assembly along the axial direction of the guide shaft.
2. The height detection device according to claim 1, characterized in that: A return spring is also sleeved on the guide shaft, and two ends of the return spring are respectively connected to the support frame and the rolling assembly.
3. The height detection device according to claim 1 or 2, characterized in that: The rolling assembly comprises a roller bracket and a distance measuring roller which are rotatably connected, the roller bracket is fixedly connected to the guide shaft, and the displacement detection assembly is fixed to the roller bracket.
4. The height detection device according to claim 3, characterized in that: The roller bracket is connected to the ranging roller shaft.
5. A composite current collector detection system, characterized in that: The composite current collector detection system comprises an unwinding device, a guide roller, a winding device, a host computer, at least one frame, and at least one height detection device according to any one of claims 1 to 4; The unwinding device, guide roller and winding device are arranged in sequence along the composite current collector conveying direction, the frame is arranged above the guide roller, the height detection device is fixed on the frame so that the rolling assembly faces the composite current collector on the guide roller, and the upper computer is electrically connected to the height detection device.
6. The composite current collector detection system according to claim 5, characterized in that: At least two height detection devices are arranged on the frame, and the height detection devices are arranged at equal intervals along the extension direction of the guide roller.
7. The composite current collector detection system according to claim 5 or 6, characterized in that: The number of the frames is at least two, and at least two of the frames are located above the guide roller and are arranged along the radial direction of the guide roller.
8. The composite current collector detection system according to claim 7, characterized in that: At least two of the frames are spaced apart along the radial direction of the guide roller; The angle between the connecting lines of two adjacent frames and the center point of the guide roller is 15° to 45°.
9. The composite current collector detection system according to claim 7, characterized in that: Two adjacent height detection devices located on different frames are staggeredly distributed along the radial direction of the guide roller; Taking the vertical plane passing through the axis of the guide roller as the reference plane, the orthographic projections of the distance measuring rollers of two adjacent height detection devices located on different frames on the reference plane partially overlap.
10. The composite current collector detection system according to claim 5, characterized in that: The composite current collector detection system further comprises a metering device, which is electrically connected to the host computer and is used to detect the rolled-up length of the composite current collector and upload the length to the host computer.