High-precision size measuring equipment applied to 3C lithium battery

Abstract

The utility model discloses a kind of high-precision size measuring equipment applied to 3C lithium battery, belong to battery detection technical field, to solve the problem of existing detection equipment process cumbersome, insufficient precision and poor universality. The equipment includes rack, and is located on rack's feeding module, code scanning component, D detection module, handling module I, battery product detection module, handling module II, OK unloading line, NG unloading line;Battery product detection module is composed of D detection module I, D detection module II and battery thickness detection module.Working, after artificial feeding, equipment realizes battery automatic transfer, code scanning identification by each module cooperation, and terminal three-dimensional parameter, surface size, two side gap, full-dimension detection of height, finally sorting to OK / NG unloading line according to result.It is high in integration degree, without manual intervention, detection is comprehensive and precision is stable, adapt to multiple model batteries, can satisfy efficient mass production detection demand.

Description

Technical Field

[0001] This utility model belongs to the field of battery testing technology, specifically relating to a high-precision dimensional measurement device for 3C lithium batteries. Background Technology

[0002] In the 3C manufacturing sector, batteries, as core power components, directly determine the assembly compatibility, power supply stability, and safety of end products based on their dimensional accuracy. Especially with the miniaturization and high integration of consumer electronics and new energy devices, the measurement accuracy requirements for key dimensions such as battery terminal spacing, casing gaps, and overall height have increased to the micrometer level. Furthermore, production cycles must meet the high-efficiency inspection needs of over 300 units per hour. Traditional manual measurement methods are no longer suitable for modern assembly line production scenarios. Currently, most mainstream battery size inspection solutions in the industry are based on single inspection technologies, such as pure 2D visual inspection or contact mechanical measurement. These require multiple devices to complete the inspection of different parameters step by step, which not only occupies a large workshop space but also requires manual product handling, resulting in cumbersome and inefficient inspection processes that cannot meet the cycle time requirements of large-scale mass production.

[0003] Existing pure 2D vision inspection equipment has significant technical drawbacks: it can only acquire planar dimension information of the battery surface and cannot accurately measure three-dimensional parameters such as the height difference between the terminals and the reference plane. Furthermore, it is limited by the inspection angle. For asymmetrical structures such as gaps on both sides of the battery casing, it is necessary to adjust the product posture and take repeated pictures. This can easily lead to the accumulation of inspection errors due to positioning deviations. In particular, when there are impurities such as burrs and dust in the gaps, they will directly interfere with the edge recognition algorithm, resulting in a significant decrease in the reliability of the inspection results. At the same time, the camera and light source positions of most 2D inspection equipment are fixed, making it difficult to adapt to the size differences of different battery models. The equipment has poor versatility, and the optical system needs to be readjusted when changing the inspection product, which increases the production switchover cost and time.

[0004] While contact-type mechanical measuring equipment can perform some 3D dimension inspections, it also has significant shortcomings: It acquires data through direct contact between the probe and the battery surface, and after prolonged use, the probe is prone to wear and tear, leading to decreased accuracy and requiring frequent calibration and maintenance, increasing equipment operating costs. Furthermore, contact measurement is slow, with a single inspection typically taking more than 10 seconds, making it difficult to meet the high-cycle production demands of 360 units per hour. In addition, traditional equipment lacks a backup design for its I / O signal interfaces; if a board contact is damaged, the machine must be shut down to replace the board before production can resume, resulting in a high failure rate and low uptime. Simultaneously, the equipment lacks a comprehensive alarm system; when problems such as abnormal vacuum adsorption or out-of-tolerance detection occur, operators struggle to quickly pinpoint the cause of the fault, further extending downtime and impacting overall production efficiency. Utility Model Content

[0005] The present invention aims to solve the technical problems of existing technologies, such as the need for multiple devices to complete battery size inspection in stages, the large amount of manual transfer and intervention, the cumbersome and inefficient inspection process, the inability of a single inspection technology to cover key dimensional parameters of the battery such as two-dimensional, three-dimensional and height, and the poor equipment versatility and easy impact on inspection accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-precision dimensional measurement device for 3C lithium batteries includes a frame and a loading module, a barcode scanning component, a 3D inspection module, a handling module I, a battery product inspection module, a handling module II, an OK unloading line, and an NG unloading line mounted on the frame.

[0008] The feeding module allows for manual placement of battery products, and the transfer module then transfers the battery products from the output end of the feeding conveyor line to the conveying module.

[0009] The barcode scanning component is installed on the support frame of the machine and located on the movement path of the conveying module to perform barcode scanning and identification operations on the passing battery products.

[0010] The 3D inspection module is mounted on the support frame of the machine and is located on the movement path of the conveying module. It is used to accurately measure the distance from the four terminals of the battery product to the plane.

[0011] The transport module I is used to transport battery products from the transport station to 2D inspection station I, transport battery products from 2D inspection station I to 2D inspection station II, and transport battery products from 2D inspection station II to battery thickness inspection station.

[0012] The battery product testing module consists of 2D testing module I, 2D testing module II, and battery thickness testing module. 2D testing module I detects multiple surface dimension parameters of the battery product through two images taken by CCD camera I. 2D testing module II detects the width of the gaps on both sides by flipping the product with CCD camera II and a rotary cylinder. The battery thickness testing module detects the height parameter of the battery product using relevant mechanical structures and contact displacement sensors.

[0013] The handling module II, through the coordinated action of the horizontal servo linear module and the lifting cylinder III, drives the vacuum suction cup IV to move and lift, and transports the battery products that have completed the inspection at the battery thickness inspection station to the OK unloading line or NG unloading line according to the inspection results.

[0014] Preferably, the feeding module includes a feeding conveyor line for manually placing and conveying battery products, and a transfer module for transferring battery products from the output end of the feeding conveyor line to the conveying module.

[0015] Preferably, the transfer module includes a support frame I fixed on the frame, a push cylinder I fixed on the support frame I, a movable seat I fixedly connected to the piston rod end of the push cylinder I and sliding in coordination with the support frame I, a down-moving cylinder I fixed on the movable seat I, and a vacuum suction cup I fixed to the piston rod end of the down-moving cylinder I.

[0016] Preferably, the conveying module is used to transport battery products sequentially through the barcode scanning component and the 3D detection module installed on the frame. The conveying module includes a servo linear module I fixed on the frame and a copying tooling fixture on the moving slide I of the servo linear module I. The servo linear module I moves the copying tooling fixture to the loading position or the conveying position. A vacuum suction cup II is embedded in the copying groove of the copying tooling fixture. A support frame II is fixed on the frame. A flat push cylinder II is provided on the support frame II. The piston rod end of the flat push cylinder II is provided with a correction plate aligned with the loading position. The flat push cylinder II pushes the correction plate to move, pushing and accurately positioning the battery product in the copying tooling fixture.

[0017] Vacuum suction cup I is located above the loading position. Vacuum suction cup I is installed above the copying tooling fixture. Under the action of downward cylinder I, vacuum suction cup I moves down to adsorb and fix the battery products. Under the action of horizontal cylinder I, vacuum suction cup I transfers the adsorbed and fixed battery products from the discharge end of the loading conveyor line to the copying tooling fixture on the loading position of the conveying module.

[0018] Preferably, the handling module I includes a linear guide rail I fixed to the top of the frame, a transverse cylinder fixed to the linear guide rail I, a movable slide II mounted on the transverse cylinder and cooperating with the linear guide rail I for guiding and sliding, a lifting cylinder I fixed to the movable slide II, a support frame III fixedly connected to the piston rod end of the lifting cylinder I, and three sets of vacuum suction cups III arranged at equal intervals on the support frame III.

[0019] Preferably, the 2D inspection module I is located on the 2D inspection station I, and the 2D inspection module I includes a CCD camera I located on the 2D inspection station I and a Z-axis servo module fixed on the frame and driving the CCD camera I to move up and down. The 2D inspection station I is also provided with optical glass for placing battery products and fixed on the frame, and the CCD camera I is vertically aligned with the optical glass. The Z-axis servo module drives the CCD camera I to move twice to take pictures to realize the inspection of multiple surface dimensions of the battery products.

[0020] Preferably, the 2D inspection module II is located on the 2D inspection station II, and the 2D inspection module II adopts the CCD camera II. The inspection station II is also equipped with a rotary cylinder for driving the rotating platform to rotate and fixed on the frame. The CCD camera II is aligned with the battery product on the rotating platform, and the rotary cylinder drives the battery product to rotate 180° to realize the detection of the gap width on both sides of the battery product.

[0021] Preferably, the battery thickness detection module is located at the battery thickness detection station, and the battery thickness detection module includes a support frame IV fixed on the frame, a positioning module on the support frame IV and used for positioning the battery product, a lifting cylinder II fixed on the top of the support frame, a height measuring plate fixedly connected to the piston rod end of the lifting cylinder II and used to guide and slide with the support frame IV, a counterweight block located on the side away from the height measuring plate and sliding along the support frame, a guide wheel group fixed on the support frame, a traction rope connecting the counterweight block and the height measuring plate and guided by the guide wheel group, and a contact displacement sensor fixed on the support frame.

[0022] The positioning module is located at the battery thickness detection station and includes a positioning clamping slot for placing battery products and a flat-push cylinder III fixed on the support frame IV and pushing the clamping plate to clamp and position the battery products in the positioning clamping slot.

[0023] Lifting cylinder II drives the height measuring plate to descend, and the weight difference between the counterweight and the height measuring plate causes the height measuring plate to press against the surface of the battery product. The contact displacement sensor calculates the height of the battery product by detecting the displacement.

[0024] Preferably, the handling module II includes a horizontal servo linear module fixed on the frame, a support frame V fixed on the moving slide of the horizontal servo linear module, a lifting cylinder III fixed on the support frame V, and a vacuum suction cup IV fixedly connected to the piston rod end of the lifting cylinder III.

[0025] The horizontal servo linear module works in conjunction with the lifting cylinder III to drive the vacuum suction cup IV to move horizontally and vertically.

[0026] Preferably, both the OK unloading line and the NG unloading line are fixed on the frame. The OK unloading line is used to transport qualified products, and the NG unloading line is used to transport unqualified products.

[0027] Compared with the prior art, the technical effects and advantages of this utility model are:

[0028] (1) This utility model uses a frame as a carrier to integrate a feeding module, a barcode scanning component, multiple detection modules and a handling module. After the battery is manually fed, the transfer module, conveying module, handling module I and handling module II complete the automatic transfer between each station in sequence. No manual transfer or intervention is required. This solves the problem of complicated process caused by multi-equipment step-by-step detection and high degree of manual participation in the prior art, and effectively adapts to the high-efficiency detection requirements of large-scale mass production.

[0029] (2) Compared with existing single 2D inspection or contact inspection equipment, this utility model uses a 3D inspection module to inspect the three-dimensional parameters of the battery terminals, a 2D inspection module I to inspect multiple surface dimensions, a 2D inspection module II in conjunction with a rotating platform to inspect the gaps on both sides, and a battery thickness inspection module to inspect the height parameters, covering the two-dimensional and three-dimensional inspection requirements of the key dimensions of the battery, avoiding the quality risks caused by the lack of inspection dimensions in existing technologies, and ensuring that the battery size parameters are fully compliant.

[0030] In existing technologies, manual inspection is easily affected by subjective factors, and some equipment may cause inspection deviations due to inaccurate positioning. However, this utility model achieves precise battery positioning through structures such as profile tooling fixtures, straightening plates, and positioning slots. The transport module ensures transport stability through the coordinated action of cylinders and linear modules. Each inspection module completes inspection at a fixed station, reducing errors caused by positional offsets. At the same time, it avoids the problem of accuracy decline caused by long-term wear and tear of contact inspection equipment, thereby improving the reliability of inspection results. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the present invention after the frame has been removed;

[0033] Figure 3 This is a schematic diagram of the structure of the feeding module, the barcode scanning component, and the 3D detection module of this utility model.

[0034] Figure 4 This is a schematic diagram of the structure of the handling module I of this utility model;

[0035] Figure 5 This is a first-view structural schematic diagram of the 2D detection module I, 2D detection module II, and battery thickness detection module of this utility model;

[0036] Figure 6 This is a second-view view of the 2D detection module I, 2D detection module II, and battery thickness detection module of this utility model.

[0037] Figure 7 This is a schematic diagram of the structure of the handling module II of this utility model;

[0038] Figure 8 This is a schematic diagram of the OK unloading line and NG unloading line of this utility model.

[0039] In the picture:

[0040] 1. Feeding module; 101. Feeding conveyor line; 102. Conveying module; 103. Transfer module; 104. Support frame I; 105. Horizontal push cylinder I; 106. Moving seat I; 107. Downward cylinder I; 108. Vacuum suction cup I; 109. Servo linear module I; 110. Moving slide I; 111. Copying tooling fixture; 112. Support frame II; 113. Horizontal push cylinder II; 114. Straightening plate;

[0041] 2. QR code scanning component;

[0042] 3. 3D inspection module;

[0043] 4. Handling Module I; 401. Linear Guide Rail I; 402. Transverse Cylinder; 403. Moving Slide Table II; 404. Lifting Cylinder I; 405. Support Frame III; 406. Vacuum Suction Cup III;

[0044] 5. 2D Inspection Module I; 501. CCD Camera I; 502. Z-axis Servo Module; 503. Optical Glass;

[0045] 6. 2D Inspection Module II; 601. CCD Camera II; 602. Rotating Platform;

[0046] 7. Battery thickness detection module; 701. Support frame IV; 702. Lifting cylinder II; 703. Height measuring plate; 704. Counterweight; 705. Guide wheel assembly; 706. Contact displacement sensor; 707. Positioning clamp; 708. Horizontal push cylinder III; 709. Clamping plate;

[0047] 8. Handling Module II; 801. Lateral Servo Linear Module; 802. Support Frame V; 803. Lifting Cylinder III; 804. Vacuum Suction Cup IV;

[0048] 9. OK unloading line; 10. NG unloading line; 11. Frame. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] The following is in conjunction with the appendix Figures 1 to 8 This application will be described in further detail.

[0051] This application discloses a high-precision dimensional measurement device for 3C lithium batteries, including a frame 11 and a loading module 1, a barcode scanning component 2, a 3D inspection module 3, a conveying module I 4, a battery product inspection module, a conveying module II 8, an OK unloading line 9, and an NG unloading line 10 mounted on the frame 11. The loading module 1 is used for manually placing battery products and achieving initial product fixation and positional transport. The barcode scanning component 2 performs barcode scanning and identification operations on the passing battery products. The 3D inspection module 3 is used to detect the distance from the terminals to the plane of the battery products. The battery product inspection module includes a 2D inspection module I 5, a 2D inspection module II 6, and a battery thickness inspection module 7. The 2D inspection modules I 5 and II 6 are used to detect the gap width and multiple surface dimension parameters of the battery products, respectively. The battery thickness inspection module 7 is used to detect the height parameter of the battery products. The conveying module II 8 is used to transport qualified and unqualified products after inspection to the corresponding OK unloading line 9 or NG unloading line 10, respectively.

[0052] The feeding module 1 includes a feeding conveyor line 101 for manually placing and conveying battery products, and a transfer module 103 for transferring battery products from the output end of the feeding conveyor line 101 to the conveying module 102.

[0053] The transfer module 103 includes a support frame I104 fixed on the frame 11, a push cylinder I105 fixed on the support frame I104, a movable seat I106 fixedly connected to the piston rod end of the push cylinder I105 and guided and slidable in cooperation with the support frame I104, a down cylinder I107 fixed on the movable seat I106, and a vacuum suction cup I108 fixed to the piston rod end of the down cylinder I107;

[0054] The conveying module 102 is used to transport battery products sequentially through the barcode scanning component 2 and the 3D detection module 3 installed on the frame 11. The conveying module 102 includes a servo linear module I 109 fixed on the frame 11 and a copying tooling fixture 111 set on the moving slide I 110 of the servo linear module I 109. The servo linear module I 109 drives the copying tooling fixture 111 to move to the loading position or the conveying position. A vacuum suction cup II is embedded in the copying groove of the copying tooling fixture 111. A support frame II 112 is fixed on the frame 11. A flat push cylinder II 113 is set on the support frame II 112. A correction plate 114 is set at the end of the piston rod of the flat push cylinder II 113 to align with the loading position. The flat push cylinder II 113 pushes the correction plate 114 to move, pushing and accurately positioning the battery product in the copying tooling fixture 111.

[0055] Vacuum suction cup I108 is located above the loading position. Vacuum suction cup I108 is installed above the profile tooling fixture 111. Under the action of the downward cylinder I107, vacuum suction cup I108 moves down to adsorb and fix the battery product. Under the action of the horizontal cylinder I105, vacuum suction cup I108 transfers the adsorbed and fixed battery product from the discharge end of the loading conveyor line 101 to the profile tooling fixture 111 on the loading position of the conveyor module 102.

[0056] The barcode scanning component 2 and the 3D detection module 3 are arranged sequentially along the movement path of the conveying module 102 and mounted on the support frame of the frame 11, respectively for barcode scanning and 3D detection of battery products;

[0057] The barcode scanning component 2 typically employs an industrial-grade barcode scanner or an integrated scanning module, with its core consisting of an optical lens, an image sensor, and a decoding chip. It captures images of one-dimensional or two-dimensional barcodes on the battery surface through the lens, converts the optical signals into electrical signals through the sensor, and then the decoding chip quickly parses the data stored in the barcode, such as the product model, batch number, and production information. This enables accurate identification and traceability of individual batteries, providing fundamental support for binding subsequent testing data with product information.

[0058] The 3D inspection module 3 uses a 3D line laser camera with a light source wavelength of 405nm, a laser output power of 10mW, a Z-axis height repeatability of 0.2μm, an X-axis width linear repeatability of 5μm, 3200 X-axis contour points, and a scanning speed range of 3200Hz~67000Hz. Its main function is to accurately measure the distance from the four terminals of the battery product to the plane. With its high-precision inspection performance, it provides key data for determining whether the battery terminal dimensions meet the standard requirements.

[0059] The transport module I4 is used to transport battery products from the transport station to 2D inspection station I, to 2D inspection station I to 2D inspection station II, and to battery products from 2D inspection station II to battery thickness inspection station.

[0060] The handling module I4 includes a linear guide rail I401 fixed to the top of the frame 11, a transverse cylinder 402 fixed on the linear guide rail I401, a movable slide II403 mounted on the transverse cylinder 402 and cooperating with the linear guide rail I401 for guiding and sliding, a lifting cylinder I404 fixed on the movable slide II403, a support frame III405 fixedly connected to the piston rod end of the lifting cylinder I404, and three sets of vacuum suction cups III406 arranged at equal intervals on the support frame III405.

[0061] The 2D inspection module I5 is located on the 2D inspection station I, and includes a CCD camera I501 located on the 2D inspection station I and a Z-axis servo module 502 fixed on the frame 11 and driving the CCD camera I501 to move up and down. The 2D inspection station I is also provided with an optical glass 503 for placing battery products and fixed on the frame 11. The CCD camera I501 is vertically aligned with the optical glass 503. The Z-axis servo module 502 drives the CCD camera I501 to move twice to take pictures to realize the inspection of multiple surface dimensions of the battery products.

[0062] During operation, the Z-axis servo module 502 drives the CCD camera I501 to move and take two pictures. By analyzing and processing the captured images, multiple surface dimension parameters of the battery product can be detected, and the two-dimensional dimension information of the battery product surface can be fully obtained to ensure that the battery surface dimensions meet the production specifications.

[0063] The 2D inspection module II6 is located on the 2D inspection station II, and the 2D inspection module II6 adopts the CCD camera II601. The inspection station II is also equipped with a rotary cylinder for driving the rotary platform 602 to rotate and fixed on the frame 11. The CCD camera II601 is aligned with the battery product on the rotary platform 602. The rotary cylinder drives the battery product to rotate 180° to realize the detection of the gap width on both sides of the battery product.

[0064] During the testing process, the rotating cylinder can drive the battery product to rotate 180°. The CCD camera II 601 works in conjunction with this action to photograph and test the battery product, thereby achieving accurate detection of the width of the gaps on both sides of the battery product and effectively identifying problems where the gap size on both sides of the battery exceeds the standard.

[0065] The battery thickness detection module 7 is located at the battery thickness detection station, and the battery thickness detection module 7 includes a support frame IV 701 fixed on the frame 11, a positioning module on the support frame IV 701 and used for battery product positioning, a lifting cylinder II 702 fixed on the top of the support frame, a height measuring plate 703 fixedly connected to the piston rod end of the lifting cylinder II 702 and used to guide and slide with the support frame IV 701, a counterweight 704 located on the side away from the height measuring plate 703 and sliding along the support frame, a guide wheel group 705 fixed on the support frame, a traction rope connecting the counterweight 704 and the height measuring plate 703 and guided by the guide wheel group 705, and a contact displacement sensor 706 fixed on the support frame.

[0066] The positioning module is located at the battery thickness detection station and includes a positioning clamping groove 707 for placing battery products and a flat-push cylinder Ⅲ 708 fixed on the support frame Ⅳ 701 and pushing the clamping plate 709 to clamp and position the battery products in the positioning clamping groove 707.

[0067] Lifting cylinder II 702 drives the height measuring plate 703 to descend. The weight difference between the counterweight 704 and the height measuring plate 703 causes the height measuring plate 703 to press against the surface of the battery product. The contact displacement sensor 706 calculates the height of the battery product by detecting the displacement.

[0068] The battery thickness detection module 7 is deployed at the battery thickness detection station and consists of a support frame IV 701, a positioning module, a lifting cylinder II 702, a height measuring plate 703, a counterweight 704, a guide wheel assembly 705, a traction rope, and a contact displacement sensor 706. The positioning module includes a positioning clamping groove 707 and a flat-push cylinder III 708. The flat-push cylinder III 708 pushes the clamping plate 709 to clamp and position the battery product within the positioning clamping groove 707. During detection, the lifting cylinder II 702 drives the height measuring plate 703 to descend. The weight difference between the counterweight 704 and the height measuring plate 703 causes the height measuring plate 703 to press against the surface of the battery product. The contact displacement sensor 706 calculates the height parameters of the battery product by detecting the displacement, providing a reliable detection method for controlling the dimensional accuracy of the battery product's height.

[0069] The transfer module II8 is used to transfer battery products from the battery thickness inspection station to the OK unloading line 9 or NG unloading line 10.

[0070] The handling module II8 includes a horizontal servo linear module 801 fixed on the frame 11, a support frame V 802 fixed on the moving slide of the horizontal servo linear module 801, a lifting cylinder III 803 fixed on the support frame V 802, and a vacuum suction cup IV 804 fixedly connected to the piston rod end of the lifting cylinder III 803.

[0071] The horizontal servo linear module 801 works in conjunction with the lifting cylinder Ⅲ 803 to drive the vacuum suction cup Ⅳ 804 to move horizontally and vertically.

[0072] Both OK unloading line 9 and NG unloading line 10 are fixed on frame 11. OK unloading line 9 is used to transport qualified products, and NG unloading line 10 is used to transport unqualified products.

[0073] The workflow of this high-precision dimensional measurement equipment used in 3C lithium batteries is as follows:

[0074] S1. Loading and Preliminary Positioning Stage: The operator manually places the battery product onto the loading conveyor line 101 of the loading module 1. The loading conveyor line 101 transports the battery to the discharge end. Subsequently, the transfer module 103 is activated. The horizontal push cylinder I 105 drives the moving seat I 106 to slide along the support frame I 104 above the battery. The downward cylinder I 107 drives the vacuum suction cup I 108 to move down and adsorb the battery. Then, the horizontal push cylinder I 105 transfers the battery to the loading position of the conveying module 102. At this time, the horizontal push cylinder II 113 on the support frame II 112 pushes the straightening plate 114 to move, accurately positioning the battery in the copying fixture 111. The vacuum suction cup II in the copying fixture 111 is activated to adsorb and fix the battery. The servo linear module I 109 drives the moving slide I 110 and the copying fixture 111 to move to the conveying position.

[0075] S2, Barcode Scanning and 3D Inspection Stage: The conveyor module 102 moves the battery along a preset path, first passing through the barcode scanning component 2. The scanning component 2 scans and identifies the barcode on the battery surface, recording the battery's product model, batch number, and other identification information, thus achieving traceability by binding the inspection data with the battery. Next, the battery continues to move under the 3D inspection module 3. The 3D inspection module 3 starts and accurately measures the distance from the four terminals of the battery to the reference plane, completing the detection of key parameters in the terminal height dimension. The inspection data is uploaded to the system storage in real time.

[0076] S3, Multi-station 2D inspection and height inspection stage: The handling module I4 is started, the transverse cylinder 402 drives the moving slide II 403 to slide along the linear guide I 401 to the top of the conveying position, the lifting cylinder I 404 drives the support frame III 405 and the three sets of vacuum suction cups III 406 to move down, adsorb the battery on the conveying position and transfer it to the 2D inspection station I. At 2D inspection station I, the Z-axis servo module 502 drives the CCD camera I 501 to rise and fall and take two pictures. The image processing is used to analyze multiple surface dimension parameters of the battery. After the inspection is completed, the transport module I 4 transfers the battery to 2D inspection station II. The rotary cylinder drives the rotary platform 602 to rotate the battery 180°. The CCD camera II 601 takes pictures to detect the width of the gap on both sides of the battery. Then the transport module I 4 transfers the battery to the battery thickness inspection station. The horizontal push cylinder III 708 pushes the clamping plate 709 to position the battery in the positioning clamping groove 707. The lifting cylinder II 702 drives the height measuring plate 703 to fall. The weight difference between the counterweight 704 and the height measuring plate 703 makes the height measuring plate 703 fit against the battery surface. The contact displacement sensor 706 calculates the battery height parameter by detecting the displacement.

[0077] S4. Sorting and Unloading Stage: After the battery thickness detection station completes the inspection, the system comprehensively judges all the inspection data to determine whether the battery is qualified (OK) or unqualified (NG). The handling module II 8 is activated, and the horizontal servo linear module 801 moves the support frame V 802 above the battery thickness detection station. The lifting cylinder III 803 drives the vacuum suction cup IV 804 to move down and pick up the battery. If the battery is determined to be qualified, the horizontal servo linear module 801 moves the battery to above the OK unloading line 9, and the vacuum suction cup IV 804 releases the battery, which is then transported to the qualified product area by the OK unloading line 9. If the battery is determined to be unqualified, the horizontal servo linear module 801 transfers the battery to above the NG unloading line 10 for release, and the battery is then transported to the unqualified product area by the NG unloading line 10, completing the full-process inspection and sorting of battery size in a single cycle.

[0078] The working principle of this utility model is based on an integrated process design of automated conveying, multi-dimensional detection, and intelligent sorting. With the frame 11 as the installation base, the loading module 1 completes the manual loading and precise positioning of batteries. The transfer module 103, in conjunction with the conveying module 102, sequentially transports the batteries to the barcode scanning component 2 and the 3D detection module 3 to realize battery identification and terminal three-dimensional parameter detection. Subsequently, the handling module I4 transfers the batteries to the 2D detection station I, 2D detection station II, and battery thickness detection station, where the surface dimensions, side gaps, and height parameters are detected by the 2D detection module I5, 2D detection module II6, and battery thickness detection module 7, respectively. Finally, the handling module II8 sorts the batteries to the OK unloading line 9 or NG unloading line 10 based on the detection results. The entire process requires no manual intervention, realizing automated detection of all battery size parameters.

[0079] Compared with existing single-function testing equipment, the core advantage of this invention lies in its integrated testing capabilities. Existing technologies require multiple devices to complete 2D, 3D, and height testing in steps, and manual battery transfer is also necessary. In contrast, this invention integrates the barcode scanning component 2, the 3D testing module 3, the 2D testing module I 5, the 2D testing module II 6, and the battery thickness testing module 7 into the same frame 11. Furthermore, it achieves automatic battery transfer between different workstations through the handling modules I 4 and II 8, significantly shortening the testing process, reducing the equipment footprint, and avoiding positioning deviations caused by manual transfer, thus improving testing consistency.

[0080] In terms of detection accuracy and adaptability, this invention is also superior to existing technologies. Existing pure 2D detection equipment cannot obtain three-dimensional parameters, and contact-type detection equipment is prone to reduced accuracy due to wear. However, this invention supplements three-dimensional dimension detection with a 3D detection module 3, and the 2D detection module II 6 works with the rotating platform 602 to realize battery flip detection. The battery thickness detection module 7 ensures high detection stability with the help of the positioning clamp 707 and the contact displacement sensor 706. At the same time, the profile tooling fixture 111 and the positioning clamp 707 can be adapted to different battery models, eliminating the need for frequent replacement of core components. This solves the problems of poor versatility and cumbersome debugging of existing equipment and reduces production switching costs.

[0081] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision dimensional measurement device for 3C lithium batteries, characterized in that, Includes a frame (11) and a loading module (1), a barcode scanning component (2), a 3D inspection module (3), a handling module I (4), a battery product inspection module, a handling module II (8), an OK unloading line (9), and an NG unloading line (10) mounted on the frame (11); The loading module (1) manually places the battery products and then uses the transfer module (103) to transfer the battery products from the output end of the loading conveyor line (101) to the conveying module (102). The barcode scanning component (2) is installed on the support frame of the frame (11) and located on the movement path of the conveying module (102) to perform barcode scanning and identification operations on the passing battery products; The 3D inspection module (3) is installed on the support frame of the frame (11) and is located on the movement path of the conveying module (102) for accurately measuring the distance from the four terminals of the battery product to the plane; The transport module I (4) is used to transport the battery products on the transport station to 2D inspection station I, transport the battery products on 2D inspection station I to 2D inspection station II, and transport the battery products on 2D inspection station II to the battery thickness inspection station. The battery product testing module consists of a 2D testing module I (5), a 2D testing module II (6), and a battery thickness testing module (7). The 2D testing module I (5) detects multiple surface dimension parameters of the battery product through two shots taken by the CCD camera I (501). The 2D testing module II (6) detects the width of the gaps on both sides by flipping the product with the help of the CCD camera II (601) and a rotary cylinder. The battery thickness testing module (7) detects the height parameter of the battery product using relevant mechanical structures and a contact displacement sensor (706). The transport module II (8) drives the vacuum suction cup IV (804) to move and lift through the coordinated action of the horizontal servo linear module (801) and the lifting cylinder III (803), and transports the battery products that have completed the inspection at the battery thickness inspection station to the OK unloading line (9) or NG unloading line (10) according to the inspection results.

2. The high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: The loading module (1) includes a loading conveyor line (101) for manually placing and conveying battery products, and a transfer module (103) for transferring battery products from the output end of the loading conveyor line (101) to the conveying module (102).

3. The high-precision dimensional measurement device for 3C lithium batteries according to claim 2, characterized in that: The transfer module (103) includes a support frame I (104) fixed on the frame (11), a horizontal push cylinder I (105) fixed on the support frame I (104), a movable seat I (106) fixedly connected to the piston rod end of the horizontal push cylinder I (105) and sliding in coordination with the support frame I (104), a downward cylinder I (107) fixed on the movable seat I (106), and a vacuum suction cup I (108) fixed to the piston rod end of the downward cylinder I (107).

4. A high-precision dimensional measurement device for 3C lithium batteries according to claim 3, characterized in that: The conveying module (102) is used to transport battery products sequentially through the barcode scanning component (2) and the 3D inspection module (3) mounted on the frame (11). The conveying module (102) includes a servo linear module I (109) fixed on the frame (11) and a copying tooling fixture (111) on the moving slide I (110) of the servo linear module I (109). The servo linear module I (109) moves the copying tooling fixture (111) to the loading position. Or the conveying position, a vacuum suction cup II is embedded in the contouring groove of the contouring tooling fixture (111), a support frame II (112) is fixed on the frame (11), a flat push cylinder II (113) is provided on the support frame II (112), and a straightening plate (114) is provided at the end of the piston rod of the flat push cylinder II (113) to align with the loading position. The flat push cylinder II (113) pushes the straightening plate (114) to move and pushes the battery product and accurately positions it in the contouring tooling fixture (111); Vacuum suction cup I (108) is located above the loading position. Vacuum suction cup I (108) is installed above the profile tooling fixture (111). Under the action of the downward cylinder I (107), vacuum suction cup I (108) moves down to adsorb and fix the battery product. Under the action of the horizontal cylinder I (105), vacuum suction cup I (108) transfers the adsorbed and fixed battery product from the discharge end of the loading conveyor line (101) to the profile tooling fixture (111) on the loading position of the conveying module (102).

5. A high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: The handling module I (4) includes a linear guide rail I (401) fixed on the top of the frame (11), a transverse cylinder (402) fixed on the linear guide rail I (401), a moving slide II (403) provided on the transverse cylinder (402) and cooperating with the linear guide rail I (401) for guiding and sliding, a lifting cylinder I (404) fixed on the moving slide II (403), a support frame III (405) fixedly connected to the piston rod end of the lifting cylinder I (404), and three sets of vacuum suction cups III (406) arranged at equal distances on the support frame III (405).

6. A high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: The 2D inspection module I (5) is located on the 2D inspection station I, and the 2D inspection module I (5) includes a CCD camera I (501) located on the 2D inspection station I and a Z-axis servo module (502) fixed on the frame (11) and driving the CCD camera I (501) to move up and down. The 2D inspection station I is also provided with an optical glass (503) for placing battery products and fixed on the frame (11). The CCD camera I (501) is vertically aligned with the optical glass (503). The Z-axis servo module (502) drives the CCD camera I (501) to move twice to take pictures to realize the inspection of multiple surface dimensions of the battery products.

7. A high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: The 2D inspection module II (6) is located on the 2D inspection station II, and the 2D inspection module II (6) adopts the CCD camera II (601). The inspection station II is also equipped with a rotary cylinder for driving the rotary platform (602) to rotate and fixed on the frame (11). The CCD camera II (601) is aligned with the battery product on the rotary platform (602). The rotary cylinder drives the battery product to rotate 180° to realize the detection of the gap width on both sides of the battery product.

8. A high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: The battery thickness detection module (7) is located at the battery thickness detection station, and the battery thickness detection module (7) includes a support frame IV (701) fixed on the frame (11), a positioning module on the support frame IV (701) and used for battery product positioning, a lifting cylinder II (702) fixed on the top of the support frame, a height measuring plate (703) fixedly connected to the piston rod end of the lifting cylinder II (702) and used for guiding and sliding with the support frame IV (701), a counterweight (704) located on the side away from the height measuring plate (703) and sliding along the support frame, a guide wheel group (705) fixed on the support frame, a traction rope connecting the counterweight (704) and the height measuring plate (703) and guided by the guide wheel group (705), and a contact displacement sensor (706) fixed on the support frame. The positioning module is located at the battery thickness detection station and includes a positioning clamping groove (707) for placing battery products and a flat-push cylinder III (708) fixed on the support frame IV (701) and pushing the clamping plate (709) to clamp and position the battery products in the positioning clamping groove (707). Lifting cylinder II (702) drives the height measuring plate (703) to descend. The weight difference between the counterweight (704) and the height measuring plate (703) causes the height measuring plate (703) to press against the surface of the battery product. The contact displacement sensor (706) calculates the height of the battery product by detecting the displacement.

9. A high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: The transport module II (8) includes a horizontal servo linear module (801) fixed on the frame (11), a support frame V (802) fixed on the moving slide of the horizontal servo linear module (801), a lifting cylinder III (803) fixed on the support frame V (802), and a vacuum suction cup IV (804) fixedly connected to the piston rod end of the lifting cylinder III (803); The horizontal servo linear module (801) works in conjunction with the lifting cylinder III (803) to drive the vacuum suction cup IV (804) to move horizontally and vertically.

10. A high-precision dimensional measurement device for 3C lithium batteries according to claim 1, characterized in that: Both the OK unloading line (9) and the NG unloading line (10) are fixed on the frame (11). The OK unloading line (9) is used to transport qualified products, and the NG unloading line (10) is used to transport unqualified products.

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