A lithium battery pole piece size measuring device

Abstract

The utility model discloses a kind of lithium battery pole piece size measuring devices, it relates to lithium battery pole piece online measurement technical field, the lithium battery pole piece size measuring device, including table top and display, the table top is fixedly provided with support, the upper end of support is equipped with the measuring mechanism for carrying out size measurement to lithium battery pole piece, the lower end of support is provided with fixed base, fixed base inside is equipped with the object table for carrying the lithium battery pole piece to be measured, the upper end of fixed base is also provided with adjustable light source mechanism, adjustable light source mechanism adjusts illumination position according to different measurement needs.The utility model constructs multi-mode lighting system by integrating liftable rotating annular light source, adjustable arc-shaped light supplement unit and reversible locking side light source, realize all-around, self-adapting illumination adjustment to lithium battery pole piece, effectively eliminate reflection and shadow, significantly improve the accuracy and adaptability of size measurement.

Description

Technical Field

[0001] This utility model relates to the field of online measurement technology for lithium battery electrodes, and in particular to a lithium battery electrode size measuring device. Background Technology

[0002] In the automated production of lithium batteries, the dimensional accuracy of the electrodes (including positive and negative coated electrodes) is one of the key quality indicators affecting battery performance and safety. With the increasing demand for high-energy-density batteries, the control requirements for parameters such as electrode coating width, edge flatness, and alignment are becoming increasingly stringent, necessitating high-precision, non-contact online measurement on the production line.

[0003] Currently, machine vision technology is widely used in electrode size inspection. Its imaging quality is highly dependent on the illumination method of the light source. However, traditional inspection devices mostly use fixed ring light sources or backlights, with a single illumination mode, which is difficult to adapt to the measurement needs of electrodes with different materials (such as graphite and ternary materials), different surface conditions (high gloss, matte, striped coating) and different thicknesses.

[0004] In practical applications, fixed light sources can easily cause specular reflection, edge shadows, or local overexposure on the electrode surface, which seriously affects the accuracy of image edge extraction and causes misjudgment of size. This problem is particularly prominent in high-speed winding or stacking production lines, where uneven lighting restricts the stability and reliability of the detection system. Utility Model Content

[0005] This utility model provides a lithium battery electrode size measuring device, including a table and a display. A bracket is fixedly installed on the table, and a measuring mechanism for measuring the size of the lithium battery electrode is installed at the upper end of the bracket. A fixed base is provided at the lower end of the bracket, and a stage for carrying the lithium battery electrode to be measured is configured inside the fixed base. An adjustable light source mechanism is also provided at the upper end of the fixed base, which can adjust the illumination position according to different measurement requirements.

[0006] Preferably, the measuring mechanism includes a mounting bracket fixed on a support, on which an industrial camera is mounted.

[0007] Preferably, the adjustable light source mechanism includes slide rails fixed on both sides of the fixed base, a lifting rod slidably disposed in each slide rail, a lamp plate fixedly disposed between two lifting rods, and a ring light source disposed at the bottom of the lamp plate.

[0008] Preferably, a gear ring is fixedly connected to the upper end of the ring light source, and a drive wheel is rotatably provided on one side of the lamp plate, the drive wheel meshing with the gear ring.

[0009] Preferably, a lead screw is rotatably provided on one side of a set of slide rails, and the lead screw is threadedly connected to the side wall of a set of lifting rods.

[0010] Preferably, each of the lifting rods has a sliding hole, and a slider is slidably disposed in the sliding hole. The lower end of the slider is fixedly connected to the arc-shaped light source. After the two sets of arc-shaped light sources are put together, a circular structure including the ring light source is formed.

[0011] Preferably, a pull rod is fixedly provided at the upper end of the slider, one end of the pull rod passes through the upper end of the slide rail and is slidably connected to the slide rail, and the pull rod is fixed by a positioning bolt.

[0012] Preferably, a side light source is rotatably mounted on one side of the fixed base via a rotating shaft. The rotating shaft at one end of the side light source passes through the side wall of the fixed base and is fixedly connected to the rotating wheel. A vertical rail is provided at the upper end of the fixed base, and a positioning rod is slidably mounted inside the vertical rail. The positioning rod is inserted into the tooth groove of the rotating wheel, and a spring is connected to the upper end of the vertical rail and the positioning rod.

[0013] Preferably, a back plate is embedded on the inner side of the stage, and a transparent plate is provided on the upper side of the back plate.

[0014] Preferably, a conveyor belt is provided at the upper end of the platform, and the conveyor belt is located below the platform.

[0015] This utility model provides a lithium battery electrode size measuring device, which, compared with the prior art, has the following advantages:

[0016] 1. This utility model achieves multi-mode illumination of lithium battery electrodes through an adjustable light source mechanism. The ring light source is driven to rise and fall by a lead screw and can be rotated circumferentially by the cooperation of the drive wheel and the gear ring, thereby flexibly adjusting the illumination height and angle, effectively eliminating imaging interference such as reflections and shadows on the electrode surface. At the same time, the sliders on both sides drive the arc-shaped light source to move up and down, which can supplement local illumination or form a combined light source structure to further improve the imaging contrast. In addition, a side light source that can be flipped and locked is set on the fixed base. With the help of the rotating wheel and the positioning rod structure with spring, the side illumination mode can be quickly switched. It is suitable for detecting the edge position of the electrode, achieving uniform supplementary lighting on the bottom surface, significantly enhancing the edge recognition accuracy. The overall light source system has strong adaptability and can automatically match the best illumination scheme for electrodes with different materials, thicknesses and surface conditions, greatly improving the accuracy of dimensional measurement.

[0017] 2. The measuring mechanism of this utility model works in collaboration with an industrial camera and multiple light sources, and combines the upper and lower light sources with the transparent plate on the platform to ensure clear images and sharp edges. The bracket and fixed base are integrated and installed on the platform to ensure the rigidity and stability of the equipment operation. In particular, the platform is equipped with a conveyor belt located below the platform, which can be connected to the production line to realize automatic loading and unloading of electrode sheets, improve detection efficiency, and meet the needs of online or semi-automatic measurement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0020] Figure 2 This is a top view of the tabletop structure according to an embodiment of the present utility model;

[0021] Figure 3 This is a schematic diagram of the installation state of the adjustable light source mechanism according to an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the measuring mechanism structure according to an embodiment of the present utility model;

[0023] Figure 5 This is a schematic diagram of the adjustable light source mechanism according to an embodiment of the present invention;

[0024] Figure 6 This is an embodiment of the present utility model. Figure 5 A schematic diagram of the structure at point A;

[0025] Figure 7 This is an embodiment of the present utility model. Figure 5 A schematic diagram of the structure at point B;

[0026] Figure 8 This is a schematic diagram of the structure of the lamp panel and other components according to an embodiment of the present utility model.

[0027] Figure label:

[0028] 1. Tabletop; 2. Conveyor belt; 3. Monitor; 4. Bracket; 5. Mounting bracket; 6. Industrial camera; 7. Mounting base; 8. Platform; 9. Backplate; 10. Transparent plate; 11. Slide rail; 12. Lifting rod; 13. Lead screw; 14. Light panel; 15. Gear ring; 16. Ring light source; 17. Drive wheel; 18. Slider; 19. Curved light source; 20. Pull rod; 21. Positioning bolt; 22. Side light source; 23. Rotary wheel; 24. Vertical rail; 25. Positioning rod; 26. Spring. Detailed Implementation

[0029] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] Please refer to Figures 1-3This utility model provides a lithium battery electrode size measuring device, which includes a table 1, a display 3, a bracket 4, a measuring mechanism, a fixed base 7, a stage 8, an adjustable light source mechanism, and a conveyor belt 2 as its main components. The conveyor belt 2 is set on the table 1 and located below the stage 8. It is used to receive and transport the lithium battery electrode that has completed size measurement to the next process, so as to achieve seamless connection between the inspection and production process.

[0031] like Figure 4 As shown, a vertical bracket 4 is fixedly installed on the platform 1. A mounting bracket 5 is provided at the upper end of the bracket 4, and an industrial camera 6 is installed on the top of the bracket. The lens of the industrial camera 6 faces downward and is directly facing the measurement area of ​​the stage 8 below, which is used to collect high-resolution images of the electrode sheets and realize visual analysis of the size data.

[0032] like Figure 5 As shown, the lower end of the bracket 4 is connected to the fixed base 7, and a stage 8 is set inside it to support the lithium battery electrode to be tested. The stage 8 is a square platform, and a transparent plate 10 is embedded on its upper surface. The transparent plate 10 is made of high light transmittance and wear-resistant optical glass or quartz material. Below the transparent plate 10, inside the stage 8, there is a back plate 9. The back plate 9 integrates a surface light source such as an LED backlight panel to provide uniform transmitted light from the bottom up, enhance the contrast of the electrode edge contour, and facilitate image recognition.

[0033] An adjustable light source mechanism is provided on the upper surface of the mounting base 7, which is used to flexibly adjust the illumination mode according to the electrode material, surface condition and testing requirements to ensure imaging quality.

[0034] like Figure 5 As shown, the adjustable light source mechanism includes two sets of vertically arranged slide rails 11, which are fixed on the left and right sides of the fixed base 7 respectively. Each set of slide rails 11 is provided with a lifting rod 12, which can slide up and down along the slide rail 11. A lamp plate 14 is fixedly connected between the top ends of the two lifting rods 12. A ring light source 16 is installed at the bottom of the lamp plate 14 to provide coaxial lighting at the top and reduce mirror reflection interference.

[0035] like Figure 8 As shown, a gear ring 15 is fixedly connected to the top of the ring light source 16, and a drive wheel 17 is rotatably mounted on one side of the lamp plate 14 via a rotating shaft. The drive wheel 17 is a small gear that meshes with the gear ring 15. When the drive wheel 17 is rotated manually or by a micro motor, it can drive the gear ring 15 and the ring light source 16 to rotate around its central axis, thereby adjusting the circumferential angle of the ring light source 16 and avoiding directional reflection caused by the stripe coating direction on the electrode surface.

[0036] Furthermore, a lead screw 13 is provided on the outer side of a set of slide rails 11. The lead screw 13 is arranged in a vertical direction. Its lower end is rotatably connected to the fixed seat 7 through a bearing seat, and its upper end can be connected to a handwheel or servo motor. The lead screw 13 is threadedly engaged with the threaded hole on the side wall of the corresponding lifting rod 12. Rotating the lead screw 13 can drive the two lifting rods 12 to rise and fall synchronously, thereby adjusting the distance between the ring light source 16 and the electrode to adapt to different thicknesses or measurement depth requirements.

[0037] like Figure 6 As shown, each lifting rod 12 has a sliding hole on its outer side wall, and a slider 18 is slidably installed in the sliding hole. An arc-shaped light source 19 is fixedly connected to the lower end of the slider 18. The arc-shaped light source 19 is semi-circular and is composed of LED light strips or small light source modules. The two sets of arc-shaped light sources 19 are located on the left and right sides of the ring light source 16, respectively. When the two sliders 18 slide relative to each other, the two sets of arc-shaped light sources 19 and the ring light source 16 together form a complete circular lighting structure, which enhances the overall brightness. When the sliders 18 slide in the opposite direction, the arc-shaped light source 19 can be removed from the main lighting area and used for local supplementary lighting.

[0038] A pull rod 20 is fixed to the upper end of the slider 18. The pull rod 20 extends upward and passes through the top of the slide rail 11, and slides with the slide rail 11. The pull rod 20 is provided with a positioning hole or external thread, and can be locked to the mounting seat on the top of the slide rail 11 by positioning bolt 21.

[0039] like Figure 7 As shown, a side light source 22 is rotatably mounted on one side of the outer wall of the fixing base 7 via a rotating shaft. The side light source 22 is a strip light source structure used to illuminate the edge of the electrode sheet from the horizontal direction to highlight the edge contour.

[0040] One end of the rotating shaft of the side light source 22 extends into the interior of the fixed base 7 and is fixedly connected to a rotating wheel 23. The rotating wheel 23 is a disc with multiple circumferential toothed grooves. A vertical rail 24 is provided at the upper end of the fixed base 7. A positioning rod 25 is slidably arranged inside the vertical rail 24. The lower end of the positioning rod 25 can be inserted into any toothed groove of the rotating wheel 23 to realize the positioning of the side light source 22 at multiple preset angles.

[0041] A spring 26 is connected between the upper end of the positioning rod 25 and the top of the vertical rail 24. The spring 26 is a compression spring that always applies a downward elastic force to the positioning rod 25 to ensure that it is stably locked into the tooth groove of the rotating wheel 23 and to prevent it from loosening in a vibration environment. When it is necessary to switch the lighting mode, lift the positioning rod 25 upward to release the lock, and then rotate the side light source 22 to the desired position. It will automatically lock after being released.

[0042] In summary, the lithium battery electrode to be tested is placed on the transparent plate 10 of the stage 8 by manual or robotic arms in the previous process. The operator selects the appropriate lighting mode according to the electrode type: adjust the height and rotation angle of the ring light source 16, enable or adjust the arc light source 19 for supplementary lighting, and if necessary, unfold the side light source 22 for edge enhancement lighting. After the backlight is turned on, the industrial camera 6 collects images, the control system performs dimensional analysis, and the results are displayed on the display 3 in real time. After the test is completed, the operator removes the electrode and places it on the conveyor belt 2, which is then transported to the subsequent sorting or winding process.

[0043] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A lithium battery electrode size measuring device, characterized in that: The device includes a table (1) and a display (3). A bracket (4) is fixedly installed on the table (1). A measuring mechanism for measuring the size of lithium battery electrode sheets is installed on the upper end of the bracket (4). A fixed seat (7) is provided on the lower end of the bracket (4). A stage (8) for carrying the lithium battery electrode sheet to be tested is configured inside the fixed seat (7). An adjustable light source mechanism is also provided on the upper end of the fixed seat (7). The adjustable light source mechanism adjusts the illumination position according to different measurement requirements.

2. The lithium battery electrode size measuring device according to claim 1, characterized in that: The measuring mechanism includes a mounting bracket (5) fixed on a support (4), on which an industrial camera (6) is mounted.

3. The lithium battery electrode size measuring device according to claim 2, characterized in that: The adjustable light source mechanism includes slide rails (11) fixed on both sides of the fixed base (7), a lifting rod (12) is slidably arranged in each slide rail (11), a lamp plate (14) is fixedly arranged between the two lifting rods (12), and a ring light source (16) is arranged at the bottom of the lamp plate (14).

4. The lithium battery electrode size measuring device according to claim 3, characterized in that: The upper end of the ring light source (16) is fixedly connected to a gear ring (15), and a drive wheel (17) is rotatably provided on one side of the lamp plate (14), and the drive wheel (17) meshes with the gear ring (15).

5. The lithium battery electrode size measuring device according to claim 4, characterized in that: A lead screw (13) is rotatably provided on one side of a set of slide rails (11), and the lead screw (13) is threadedly connected to the side wall of a set of lifting rods (12).

6. The lithium battery electrode size measuring device according to claim 5, characterized in that: Each of the lifting rods (12) has a sliding hole, and a slider (18) is slidably arranged in the sliding hole. The lower end of the slider (18) is fixedly connected to the arc light source (19). After the two sets of arc light sources (19) are attached, they form a circular structure including the ring light source (16).

7. The lithium battery electrode size measuring device according to claim 6, characterized in that: A pull rod (20) is fixedly installed at the upper end of the slider (18). One end of the pull rod (20) passes through the upper end of the slide rail (11) and is slidably connected to the slide rail (11). The pull rod (20) is fixed by a positioning bolt (21).

8. The lithium battery electrode size measuring device according to claim 1, characterized in that: A side light source (22) is rotatably mounted on one side of the fixed base (7) via a rotating shaft. The rotating shaft at one end of the side light source (22) passes through the side wall of the fixed base (7) and is fixedly connected to the rotating wheel (23). A vertical rail (24) is provided at the upper end of the fixed base (7). A positioning rod (25) is slidably mounted inside the vertical rail (24). The positioning rod (25) is inserted into the tooth groove of the rotating wheel (23). A spring (26) is connected to the upper end of the vertical rail (24) and the positioning rod (25).

9. The lithium battery electrode size measuring device according to claim 1, characterized in that: The inner side of the stage (8) is fitted with a back plate (9), and the upper side of the back plate (9) is provided with a transparent plate (10).

10. The lithium battery electrode size measuring device according to claim 1, characterized in that: A conveyor belt (2) is provided at the upper end of the platform (1), and the conveyor belt (2) is located on the lower side of the platform (8).

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