Tab detection device

Abstract

The utility model relates to the technical field of battery cell manufacturing, and discloses a tab detection device, which comprises a CCD (Charge Coupled Device) detection mechanism, the CCD detection mechanism comprises a frame body, a first tab positioning CCD camera and a second tab positioning CCD camera, the first tab positioning CCD camera and the second tab positioning CCD camera are arranged on the frame body, and the view field of the first tab positioning CCD camera and the view field of the second tab positioning CCD camera respectively cover two adjacent tabs. The first tab positioning CCD camera and the second tab positioning CCD camera are arranged on the frame body, and the detection visual fields of the first tab positioning CCD camera and the second tab positioning CCD camera can cover two adjacent tabs, so that the first tab positioning CCD camera can detect the shoulder width size of the current tab, and the second tab positioning CCD camera can also detect the shoulder width size of the next tab at the same time, and therefore, the shoulder width size of the current tab can be detected by the first tab positioning CCD camera. And when the distance between the tabs in the raw material fluctuates, the cutting parameters can be adjusted in time, so that the reduction of the yield rate of equipment is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell manufacturing technology, and specifically relates to a tab detection device. Background Technology

[0002] In the current cell stacking process, wafer fabrication capability is a crucial factor in ensuring equipment capacity. High-efficiency and high-quality wafer fabrication effectively minimizes raw material waste and improves equipment efficiency, thereby increasing production capacity. During wafer fabrication, the tab shoulder width is a key measurement point in wafer dimensions. This shoulder width is determined by the precise positioning of the tab by the CCD (charge-coupled device) on the equipment. After determining the tab position, the system compares the preset shoulder width standard with the actual measured value to calculate the cutting blade compensation. This compensation is critical for ensuring consistent wafer dimensions. Inaccurate compensation calculations will lead to tab shoulder width deviations, affecting cell assembly accuracy and battery pack performance.

[0003] However, current CCDs typically use single-piece electrode positioning technology for positioning, which can only guarantee the current electrode size. When the electrode spacing of the raw material fluctuates, the traditional single-piece electrode positioning technology often cannot adjust the cutting parameters of the next electrode in time, resulting in a significant reduction in the film production yield. Utility Model Content

[0004] To address the shortcomings of the prior art, this invention provides a tab detection device.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0006] A tab detection device includes: a CCD detection mechanism;

[0007] The CCD detection mechanism includes a frame, a first tab positioning CCD camera, and a second tab positioning CCD camera. The first tab positioning CCD camera and the second tab positioning CCD camera are mounted on the frame, and their fields of view cover two adjacent tabs respectively.

[0008] In some embodiments, a backlight mechanism for backlighting the CCD detection mechanism is also included.

[0009] In some embodiments, the device further includes an electrode pressing mechanism for pressing down the electrode tab, the electrode pressing mechanism including a transparent flattening component and a driver for driving the transparent flattening component to press down the electrode tab, the output of the driver being connected to the transparent flattening component.

[0010] In some embodiments, the electrode pressing mechanism includes a positioning frame, a slide rail, and a slide table. The driver and the slide rail are connected to the positioning frame, the slide table is slidably disposed on the slide rail, and the transparent flattening component is connected to the slide table.

[0011] In some embodiments, two slide rails are provided.

[0012] In some embodiments, the driver is configured as a servo motor, the output end of the servo motor is connected to a cam, the cam is connected to a connecting rod via a bearing, the connecting rod is connected to a cam follower, the cam follower is connected to the slide table, and the slide table is slidably mounted on two slide rails.

[0013] In some embodiments, an elastic mechanism for balancing the gravity of the tab pressing mechanism is also included, the elastic mechanism including a tension spring, one end of which is connected to the positioning frame and the other end of which is connected to the transparent flattening assembly.

[0014] In some embodiments, the transparent flattening assembly includes a transparent plate, an L-shaped plate, and a pressure plate, wherein the two sides of the transparent plate and the two sides of the pressure plate are connected to the L-shaped plate.

[0015] In some embodiments, along the conveying direction of the conveyor belt: the distance between the edge of the field of view of the first tab positioning CCD camera and the edge of the field of view of the second tab positioning CCD camera is set as the irradiation width, and the width of the transparent plate is greater than the irradiation width.

[0016] In some embodiments, the two L-shaped plates are connected by a fixing block, which is fixedly abutted against the transparent plate.

[0017] In summary, this utility model has at least the following advantages:

[0018] The tab detection device provided by this utility model has a first tab positioning CCD camera and a second tab positioning CCD camera set on the frame, and the detection field of the two cameras can cover two adjacent tabs. In this way, while the first tab positioning CCD camera can detect the shoulder width of the current tab, the second tab positioning CCD camera can also detect the shoulder width of the next tab. Therefore, when the spacing between tabs in the raw material fluctuates, the cutting parameters can be adjusted in time, thereby avoiding a decrease in the yield of the equipment, ensuring the maximum utilization of the raw materials, and effectively reducing production costs. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the tab detection device according to an embodiment of the present invention;

[0020] Figure 2This is a schematic diagram of the overall structure of the tab detection device according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the electrode clamping mechanism and the elastic mechanism in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure of the electrode pressing mechanism and the elastic mechanism in another direction, representing an embodiment of the present invention.

[0023] Marked in the image:

[0024] 10. Electrode detection device;

[0025] 100. CCD testing mechanism; 110. Frame; 120. First electrode for positioning CCD camera; 130. Second electrode for positioning CCD camera;

[0026] 200. Backlight mechanism;

[0027] 300. Electrode pressing mechanism; 310. Driver; 311. Coupling; 312. Cam follower; 320. Transparent flattening assembly; 321. Transparent plate; 322. L-shaped plate; 323. Pressure plate; 330. Positioning frame; 340. Slide rail; 350. Slide table;

[0028] 400. Flexible mechanism;

[0029] 500, with body support;

[0030] 600, material strip. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0033] In the following embodiments and accompanying drawings, reference is made to Figure 1 and Figure 3 The coordinate system is defined with the direction of the arrow pointing to the X-axis as right, the direction of the arrow pointing to the Y-axis as front, and the direction of the arrow pointing to the Z-axis as up.

[0034] Example 1:

[0035] like Figure 1 and Figure 2 As shown, this embodiment provides an electrode detection device 10, including: a CCD detection mechanism 100; the CCD detection mechanism 100 includes a frame 110, a first electrode positioning CCD camera 120 and a second electrode positioning CCD camera 130, the first electrode positioning CCD camera 120 and the second electrode positioning CCD camera 130 are mounted on the frame 110, and the fields of view of the first electrode positioning CCD camera 120 and the second electrode positioning CCD camera 130 respectively cover two adjacent electrode settings.

[0036] Specifically, the material strip 600 is conveyed from back to front along the Y-axis on the strip support 500. The frame 110 is located on the left side of the strip support 500. The first tab positioning CCD camera 120 and the second tab positioning CCD camera 130 are both connected to mounting shells. The mounting shells are mounted on the frame 110 via L-shaped plates 322, so that the first tab positioning CCD camera 120 and the second tab positioning CCD camera 130 are arranged side by side on the frame 110 along the conveying direction of the material strip 600, and are installed above the material strip 600. In this way, the field of view of the CCD detection mechanism 100 can cover the bipolar tabs, thereby establishing a CCD coordinate system. The arrangement of the first tab positioning CCD camera 120 and the second tab positioning CCD camera 130 is subject to actual production conditions and is not limited here, only requiring that their fields of view cover the two adjacent tabs.

[0037] It is worth noting that by setting a first tab positioning CCD camera 120 and a second tab positioning CCD camera 130 on the frame, and the detection fields of both cameras can cover two adjacent tabs, the first tab positioning CCD camera 120 can detect the shoulder width of the current tab, while the second tab positioning CCD camera 130 can also detect the shoulder width of the next tab. Therefore, when the spacing between tabs in the raw material fluctuates, the cutting parameters can be adjusted in time, thereby avoiding a decrease in the equipment's yield and ensuring the maximum utilization of the raw materials, effectively reducing production costs.

[0038] Example 2

[0039] This embodiment is a further implementation of Embodiment 1, such as... Figure 2 As shown, in this embodiment, the tab detection device 10 further includes a backlight mechanism 200 for backlighting the CCD detection mechanism 100.

[0040] Specifically, the backlight mechanism 200 is installed below the conveyor belt 600, i.e., on the belt support 500, and is used to provide backlighting for the CCD inspection mechanism 100. Through the combined adjustment of the backlight mechanism 200 and the CCD inspection mechanism 100, optimal imaging effect and accuracy of the CCD are ensured. The method by which the backlight mechanism 200 provides backlighting for the CCD inspection mechanism 100 is a conventional technique known to those skilled in the art, and is achievable; therefore, it will not be described in detail in this embodiment.

[0041] To ensure the detection accuracy of the CCD inspection agency 100, such as Figures 1 to 4 As shown, in some embodiments, the tab detection device 10 further includes a tab pressing mechanism 300 for pressing down the tab. The tab pressing mechanism 300 includes a transparent flattening component 320 and a driver 310 for driving the transparent flattening component 320 to press down the tab. The output terminal of the driver 310 is connected to the transparent flattening component 320.

[0042] Specifically, the working end of the tab pressing mechanism 300 is installed below the CCD detection mechanism 100 and above the material strip 600. The transparent flattening component 320 is used to press down the tabs to ensure the stability of the material strip 600. During operation, the driver 310 drives the transparent flattening component 320 to move until it presses down and flattens the material strip 600 below. This facilitates the CCD detection mechanism 100 to take pictures and detect the material strip 600, avoiding errors in detection data caused by unevenness of the material strip 600.

[0043] To facilitate the use of the electrode clamping mechanism 300, such as Figure 3 and Figure 4 As shown, in some embodiments, the tab pressing mechanism 300 includes a positioning frame 330, a slide rail 340 and a slide table 350. The driver 310 and the slide rail 340 are connected to the positioning frame 330, the slide table 350 is slidably disposed on the slide rail 340, and the transparent flattening component 320 is connected to the slide table 350.

[0044] Specifically, refer to Figure 1 The positioning frame 330 includes a support and a fixing plate. The support is located on the right side of the belt support 500, and the fixing plate is installed on the support. The driver 310 and the slide rail 340 are installed on the fixing plate. The slide rail 340 is arranged along the Z-axis direction, that is, its arrangement direction is along the downward pressing direction of the transparent flattening component 320, and the transparent flattening component 320 slides on the slide rail 340. Thus, the sliding direction of the transparent flattening component 320 can be restricted by the setting of the slide rail 340, so that the running path of the transparent flattening component 320 is more accurate.

[0045] To make the transparent flattening assembly 320 operate more stably, such as Figure 3 and Figure 4As shown, in some embodiments, two slide rails 340 are provided.

[0046] Specifically, the front and rear sides of the slide table 350 slide on two slide rails 340. By setting two slide rails 340, the sliding direction of the front and rear sides of the slide table 350 can be limited, thus making the sliding of the slide table 350 more stable.

[0047] To facilitate driving the transparent flattening component 320, such as Figure 3 and Figure 4 As shown, in some embodiments, the driver 310 is configured as a servo motor, the output end of the servo motor is connected to a cam, the cam is connected to a connecting rod through a bearing, the connecting rod is connected to a cam follower 312, the cam follower 312 is connected to a slide table 350, and the slide table 350 is slidably mounted on two slide rails 340.

[0048] Specifically, the servo motor is mounted on the right side of the fixed plate of the positioning frame 330 via a motor mounting bracket. The positioning frame 330 has a through hole. The output end of the servo motor is connected to the cam, connecting rod, and cam follower 312 for transmission, and drives the transparent flattening assembly 320 through the through hole. Two slide rails 340 are mounted side by side on the left side of the fixed plate of the positioning frame 330 to limit the movement direction of the transparent flattening assembly 320. When the material strip 600 is transported to directly below the transparent flattening assembly 320, the servo motor drives the cam to rotate. The cam transmits power to the cam follower 312 via the connecting rod, causing the cam follower 312 to drive the slide table 350 to move downward along the slide rail 340, thereby driving the transparent flattening assembly 320 downward until it presses down and flattens the material strip 600 on the strip support 500, allowing the CCD detection mechanism 100 to detect the tabs on the material strip 600. This makes the drive stroke of the entire device more precise and stable.

[0049] Furthermore, the cam and the servo motor can also be driven by a coupling 311.

[0050] To facilitate the use of the transparent flattening component 320, such as Figure 3 and Figure 4 As shown, in some embodiments, the transparent flattening assembly 320 includes a transparent plate 321, an L-shaped plate 322, and a pressure plate 323, with both sides of the transparent plate 321 and both sides of the pressure plate 323 connected to the L-shaped plate 322.

[0051] Specifically, a connecting plate is provided on the left side of the slide table 350, and the right ends of the two L-shaped plates 322 are installed on the connecting plate. The material of the transparent plate 321 can be selected, but is not limited to, glass. The front and rear sides of the transparent plate 321 and the front and rear sides of the pressure plate 323 are respectively connected to the left ends of the two L-shaped plates 322, so that the transparent plate 321 and the pressure plate 323 are arranged side by side between the two L-shaped plates 322 along the X-axis direction, and the transparent plate 321 is located on the left side of the pressure plate 323. The bottom surface of the transparent plate 321 and the bottom surface of the pressure plate 323 are located below the two L-shaped plates 322. In this way, when the transparent flattening assembly 320 is pressed down, the transparent plate 321 can press down the tabs on the material strip 600, and the pressure plate 323 can press down the material strip 600.

[0052] To facilitate the use of the electrode pressing mechanism 300, such as Figure 1 and Figure 2 As shown, in some embodiments, along the conveying direction of the conveyor belt 600, the distance between the edge of the field of view of the first tab positioning CCD camera 120 and the edge of the field of view of the second tab positioning CCD camera 130 is set as the irradiation width, and the width of the transparent plate 321 is greater than the irradiation width.

[0053] Specifically, the width of the transparent plate 321 is greater than the distance between the edges of two adjacent tabs, so as to avoid the two tabs being unable to be pressed down due to the small width of the transparent plate 321 during detection, thereby avoiding affecting the accuracy of the CCD detection mechanism 100.

[0054] To ensure the transparent plate 321 has a lower pressure tab, such as Figure 3 As shown, in some embodiments, two L-shaped plates 322 are connected to a fixing block, which is fixedly abutted against the transparent plate 321.

[0055] Specifically, the fixing block can be, but is not limited to, a glass fixing block. By providing the fixing block, a continuous pressure can be applied to the transparent plate 321, preventing poor pressure due to loose connections after prolonged use and ensuring that the transparent plate 321 maintains its continuous pressure against the tabs. This effectively increases the practicality of the device and also improves the pressure effect on the transparent plate 321.

[0056] Furthermore, the top width of the fixing block is greater than the bottom width to reduce production costs. The number of fixing blocks can be selected, but is not limited to, four, with two fixing blocks forming a group, and the four fixing blocks pressing against the front and back sides of the transparent plate 321 respectively.

[0057] Example 3

[0058] This embodiment is a further implementation of embodiment 1 or embodiment 2, such as... Figures 1 to 4As shown, in this embodiment, the tab detection device 10 further includes an elastic mechanism 400 for balancing the gravity of the tab pressing mechanism 300. The elastic mechanism 400 includes a tension spring, one end of which is connected to the positioning frame 330 and the other end is connected to the transparent flattening assembly 320.

[0059] Specifically, one end of the tension spring is connected to the slide table 350, and the other end of the tension spring is connected to the fixing plate of the positioning frame 330 through a rod. In this way, when in standby mode, the tension spring can generate tension to balance the weight of the tab pressing mechanism 300. When in operation, the tension spring can also play a certain role in balancing the weight, thereby ensuring that the operating load of the tab pressing mechanism 300 is small and the inertia ratio is high, making the device more sensitive to operation.

[0060] The number of tension springs can be selected, but is not limited to, two, and they are symmetrically distributed on the front and rear sides of the fixing plate of the positioning frame 330.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0064] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0065] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the spirit and scope of the appended claims.

Claims

1. A tab detection device, characterized in that, include: CCD testing institutions (100); The CCD detection mechanism (100) includes a frame (110), a first tab positioning CCD camera (120), and a second tab positioning CCD camera (130). The first tab positioning CCD camera (120) and the second tab positioning CCD camera (130) are mounted on the frame (110), and the fields of view of the first tab positioning CCD camera (120) and the second tab positioning CCD camera (130) respectively cover two adjacent tabs.

2. The electrode detection device according to claim 1, characterized in that, It also includes a backlight mechanism (200) for backlighting the CCD detection mechanism (100).

3. The electrode detection device according to claim 1, characterized in that, It also includes an electrode pressing mechanism (300) for pressing down the electrode tab, the electrode pressing mechanism (300) including a transparent flattening assembly (320) and a driver (310) for driving the transparent flattening assembly (320) to press down the electrode tab, the output end of the driver (310) being connected to the transparent flattening assembly (320).

4. The electrode detection device according to claim 3, characterized in that, The electrode pressing mechanism (300) includes a positioning frame (330), a slide rail (340), and a slide table (350). The driver (310) and the slide rail (340) are connected to the positioning frame (330), the slide table (350) is slidably disposed on the slide rail (340), and the transparent flattening assembly (320) is connected to the slide table (350).

5. The electrode detection device according to claim 4, characterized in that, The slide rail (340) is configured as two.

6. The electrode detection device according to claim 5, characterized in that, The driver (310) is configured as a servo motor. The output end of the servo motor is connected to a cam. The cam is connected to a connecting rod through a bearing. The connecting rod is connected to a cam follower (312). The cam follower (312) is connected to the slide table (350). The slide table (350) is slidably mounted on two slide rails (340).

7. The electrode detection device according to claim 4, characterized in that, It also includes an elastic mechanism (400) for balancing the gravity of the electrode pressing mechanism (300), the elastic mechanism (400) including a tension spring, one end of which is connected to the positioning frame (330) and the other end of which is connected to the transparent flattening assembly (320).

8. The electrode detection device according to claim 3, characterized in that, The transparent flattening assembly (320) includes a transparent plate (321), an L-shaped plate (322), and a pressure plate (323), with the two sides of the transparent plate (321) and the two sides of the pressure plate (323) connected to the L-shaped plate (322).

9. The electrode detection device according to claim 8, characterized in that, Along the conveying direction of the conveyor belt (600): the distance between the edge of the field of view of the first tab positioning CCD camera (120) and the edge of the field of view of the second tab positioning CCD camera (130) is set as the irradiation width, and the width of the transparent plate (321) is greater than the irradiation width.

10. The electrode detection device according to claim 8, characterized in that, The two L-shaped plates (322) are connected by a fixing block, which is fixedly abutted against the transparent plate (321).

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