A battery vision inspection system

Abstract

The application relates to the technical field of batteries, in particular to a battery visual detection system, which has a first direction, a second direction and a third direction perpendicular to each other, comprises a visual detection device, a calibration piece, a transfer mechanism and a battery conveying device; the battery conveying device is used for conveying a battery to be detected along the third direction, the calibration piece is located on one side of the battery conveying device along the second direction; the transfer mechanism is at least partially located on one side of the battery conveying device along the first direction, the visual detection device is connected to the transfer mechanism and is configured to be driven to move by the transfer mechanism to observe the calibration piece or the battery to be detected; when the visual detection device needs to be calibrated, the transfer mechanism is used to drive the visual detection device to move to the calibration piece to observe the calibration piece, so that calibration work is realized; after calibration, the transfer mechanism is used to drive the visual detection device to move to the battery to be detected, so that the battery to be detected can be detected, and the calibration operation is simple.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery vision inspection system. Background Technology

[0002] On the battery testing line, a vision inspection device is needed to inspect the size or appearance of some features of the battery. The vision inspection device is fixedly installed on the battery conveying device, which has a detection area. The vision inspection device is arranged opposite to the detection area. After the battery conveying device transports the battery to be tested to the detection area, the vision inspection device inspects the feature parts of the battery to be tested located in the detection area.

[0003] To ensure the accuracy of vision inspection devices, they need to be calibrated periodically. Currently, standard batteries are used as calibration components. The dimensions or appearance of corresponding features on the standard battery have standard values, which are measured by inspection equipment with higher accuracy than the vision inspection device itself. However, calibrating a vision inspection device using standard batteries requires clearing the battery to be tested from the inspection area, manually installing the standard battery in the inspection area, and then using the vision inspection device to measure the corresponding features of the standard battery to obtain the inspection value. This calibration process is complex. Utility Model Content

[0004] The technical problem to be solved by this application is that the calibration operation is currently quite complicated when calibrating the visual inspection device on the battery testing line.

[0005] To address the aforementioned technical problems, the purpose of this application is to provide a battery visual inspection system for inspecting batteries under test. The battery visual inspection system has a first direction, a second direction, and a third direction that are perpendicular to each other, and includes a visual inspection device, a calibration component, a transfer mechanism, and a battery conveying device.

[0006] The battery delivery device is used to deliver the battery under test along the third direction;

[0007] The calibration element is located on one side of the battery delivery device along the second direction;

[0008] The transfer mechanism is at least partially located on one side of the battery delivery device along the first direction;

[0009] The visual inspection device is connected to the transfer mechanism and is configured to be driven to move by the transfer mechanism to observe the calibration element or the battery under test.

[0010] In some implementations, the calibration element has a calibration end at one end along the first direction, and the calibration end has a gap width calibration part;

[0011] The visual inspection device includes a first camera;

[0012] The first camera can be moved to one side of the calibration member along the first direction and observe the slit width calibration portion.

[0013] In some implementations, the gap width calibration unit includes a plurality of gaps arranged along the second direction, the gaps having a width along the third direction, and the width of each gap increasing sequentially in the second direction.

[0014] In some implementations, any two adjacent gaps are connected in the second direction.

[0015] In some implementations, the calibration element includes a first plate and a second plate, which are connected to each other along the third direction; the first plate has a first mating surface facing the second plate, and the second plate has a second mating surface facing the first plate.

[0016] The first mating surface has multiple grooves, each groove having a bottom surface; in the third direction, the bottom surface of the groove is spaced apart from the second mating surface, and a gap is formed between the bottom surface of the groove and the second mating surface.

[0017] In some implementations, the calibration end also has a step height calibration part, which is arranged at intervals from the gap width calibration part;

[0018] The visual inspection device further includes a second camera for detecting the step height, the second camera being movable to one side of the calibration member along the first direction and observing the step height calibration section.

[0019] In some implementations, the step height calibration part and the gap width calibration part are arranged at intervals in the third direction;

[0020] The step height calibration unit includes a reference surface and multiple measuring surfaces, the multiple measuring surfaces having a depth relative to the reference surface along the first direction;

[0021] The gap width calibration part and the plurality of measuring surfaces are respectively located on opposite sides of the reference surface along the third direction; or the plurality of measuring surfaces are arranged along the second direction, and the depth of each measuring surface increases along the second direction.

[0022] In some implementations, the transfer mechanism includes an interconnected support and a drive device, the support being fixed to the battery delivery device, the drive device being located on one side of the battery delivery device along the first direction, and the visual inspection device being disposed on the drive device and being driven to move by the drive device.

[0023] In some implementations, the transfer mechanism further includes a distance adjustment device connected to the drive device, and the vision detection device is connected to the distance adjustment device;

[0024] The distance adjustment device is configured to adjust the visual detection device to move in the first direction.

[0025] In some implementations, it also includes a first limit sensor, a second limit sensor, and a controller, wherein both the first limit sensor and the second limit sensor are electrically connected to the controller;

[0026] The driving device includes a fixed component and a movable component. The fixed component is connected to the support component, and the movable component is connected to the fixed component and can slide along the fixed component. The visual inspection device is connected to the movable component.

[0027] The first limiting sensor and the second limiting sensor are connected to the fixing member and / or the supporting member, and the first limiting sensor and the second limiting sensor are arranged at intervals in the second direction;

[0028] The visual inspection device or the moving part has a detection position and a calibration position; the detection position is used for the visual inspection device to observe the battery under test, and the calibration position is used for the visual inspection device to observe the calibration part;

[0029] The visual detection device or the moving part located at the detection position is triggered and engaged with the first limit sensor; the visual detection device and / or the moving part located at the calibration detection position is triggered and engaged with the second limit sensor.

[0030] Compared with the prior art, the beneficial effects of this application are as follows:

[0031] The battery visual inspection system of this application is used to inspect batteries under test. It has three perpendicular directions: a first direction, a second direction, and a third direction. The system includes a visual inspection device, a calibration element, a transfer mechanism, and a battery transport device. The battery transport device transports the battery under test along the third direction. The calibration element is located on one side of the battery transport device along the second direction. The transfer mechanism is at least partially located on one side of the battery transport device along the first direction. The visual inspection device is connected to the transfer mechanism and configured to be driven to move by the transfer mechanism to observe the calibration element or the battery under test. This configuration avoids affecting the normal transport of the battery under test in a non-calibrated state. When the visual inspection device needs to be calibrated, the transfer mechanism is used to drive the visual inspection device to the calibration part for observation, thus completing the calibration operation. After the visual inspection device is calibrated to be qualified, the transfer mechanism is used to drive the visual inspection device to the battery under test for inspection. When calibrating the visual inspection device, the battery visual inspection system of this application does not require emptying the battery under test located in the inspection area on the battery transport device, nor does it require repeated installation of the calibration part, making the calibration operation simpler. Attached Figure Description

[0032] Figure 1 This is an isometric view of the battery vision inspection system of this application during the positioning of the vision inspection device;

[0033] Figure 2 This is a side view of the battery visual inspection system of this application when the visual inspection device is calibrated;

[0034] Figure 3 This is a top view of the battery vision inspection system of this application when the vision inspection device is in the positioning stage;

[0035] Figure 4 This is an isometric view of the battery vision inspection system of this application when the vision inspection device is in the inspection position;

[0036] Figure 5 It is an isometric drawing of the calibration component;

[0037] Figure 6 This is a top view of the calibration component;

[0038] Figure 7 From Figure 6 View of the calibration component from the C-direction;

[0039] Figure 8 This is an exploded view of the calibration component;

[0040] In the diagram, Z represents the first direction, X the second direction, Y the third direction, 100 the battery under test, 1 the visual inspection device, 11 the first camera, 12 the second camera, 2 the calibration component, 21 the calibration end, 211 the gap width calibration part, 2111 the gap, 212 the step height calibration part, 2121 the reference surface, 2122 the measuring surface, 22 the connecting end, 23 the first plate, 231 the first mating surface, 232 the groove, and 2321 the bottom surface of the groove. 24. Second plate; 241. Second bonding surface; 3. Transfer mechanism; 31. Support component; 32. Drive device; 321. Fixing component; 322. Moving component; 33. Adjustment device; 34. Support beam; 4. Battery conveying device; 41. Support frame; 42. Belt conveyor mechanism; 421. Belt body; 422. Spacer; 43. Slot; 44. Detection area; 51. First limit sensor; 52. Second limit sensor; 61. Detection position; 62. Marker position. Detailed Implementation

[0041] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but are not intended to limit the scope of this application.

[0042] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, 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 application according to the specific circumstances.

[0044] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can 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 top" of the second feature includes the first feature being 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 second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the embodiments of the application, "parallel" refers to a state where the angle formed by two lines, a line and a surface, or a surface is -5° to 5°. "Perpendicular" refers to a state where the angle formed by two lines, a line and a surface, or a surface is 85° to 95°. Equal distances, equal angles, or equal areas refer to a tolerance range of -1% to 1%.

[0046] like Figures 1 to 8 As shown, a preferred embodiment of a battery visual inspection system of this application is used to inspect a battery 100 under test. The battery visual inspection system has a first direction Z, a second direction X, and a third direction Y that are perpendicular to each other. The battery visual inspection system includes a visual inspection device 1, a calibration element 2, a transfer mechanism 3, and a battery conveying device 4. The battery conveying device 4 is used to convey the battery 100 under test along the third direction Y. The calibration element 2 is located on one side of the battery conveying device 4 along the second direction X. The transfer mechanism 3 is at least partially located on one side of the battery conveying device 4 along the first direction Z. In this embodiment, the first direction Z is the up-down direction. The part of the battery 100 under test that needs to be visually inspected is located at the upper end of the battery 100 under test. The visual inspection device 1 is connected to the transfer mechanism 3 and is configured to be driven to move by the transfer mechanism 3 to observe the calibration element 2 or the battery 100 under test.

[0047] For ease of description, such as Figure 2 As shown, three positions are defined: detection area 44, detection position 61, and calibration position 62. Detection position 61 refers to the position where the vision inspection device 1 is inspecting the battery 100 under test, and it can observe the battery 100 under test located on the battery conveying device 4. Detection area 44 refers to the area within the field of view of the vision inspection device 1 that can observe the battery conveying device 4 when it is at detection position 61. Calibration position 62 refers to the position where the vision inspection device 1 is inspecting the calibration component 2, and it can observe the calibration component 2 at this position.

[0048] In this embodiment, the calibration component 2 is additionally located outside the detection area 44. During calibration, the visual inspection device 1 only needs to be driven to the calibration position 62 for calibration. After calibration, it returns to the detection position 61 to continue working. This avoids the calibration component 2, the transfer mechanism 3, and the visual inspection device 1 affecting the normal transport of the battery under test 100 while in the calibration state. It ensures that the battery under test 100 can normally enter and exit the detection area 44 under the drive of the battery transport device 4. There is no need to empty the battery under test 100 located in the detection area 44 on the battery transport device 4, making the calibration operation simpler.

[0049] Specifically, the transfer mechanism 3 can drive the vision inspection device 1 to move to the detection position 61 or to the calibration position 62. When the vision inspection device 1 is located at the detection position 61, it is opposite to the detection area 44 in the first direction Z. When it is located at the calibration position 62, the vision inspection device 1 is opposite to the calibration component 2 in the first direction Z. When the vision inspection device 1 is normally inspecting the battery under test 100, it is located at the detection position 61. The battery conveying device 4 continuously conveys the battery under test 100 to the detection area 44 along the third direction Y. After the battery under test arrives at the detection area 44, it makes the battery under test 100 stay in the detection area 44 briefly to ensure that the battery under test 100 remains stationary, and the vision inspection device 1 inspects the battery under test 100. When calibrating the visual inspection device 1, the battery conveying device 4 is paused first. It is not necessary to remove the battery 100 to be tested from the battery conveying device 4, which is located in the detection area 44. The transfer mechanism 3 drives the visual inspection device 1 to the calibration position 62, where the calibration component 2 is photographed, thus completing the calibration operation. After the visual inspection device 1 is calibrated successfully, the transfer mechanism 3 drives it to the detection position 61, where the battery 100 to be tested can be inspected. Since neither the visual inspection device 1 nor the calibration component 2 interferes with the normal conveying of the battery 100 to be tested by the battery conveying device 4, the battery visual inspection system of this application does not require emptying the battery 100 to be tested from the detection area 44 on the battery conveying device 4, nor does it require repeated installation and removal of the calibration component 2, making the calibration operation simpler.

[0050] The calibration component 2 has a calibration end 21 at one end along the first direction Z, and the calibration end 21 has a gap width calibration part 211. The visual inspection device 1 includes a first camera 11. The first camera 11 can be moved to one side of the calibration component 2 along the first direction Z and observe the gap width calibration part 211. Specifically, the calibration end 21 is located at the upper end of the calibration component 2. The visual inspection device 1 with the moving value calibration position 62 is vertically opposite to the gap width calibration part 211. The vertically opposite positional relationship ensures that the first camera 11 captures the gap width calibration part 211 from a vertical perspective, avoiding image distortion caused by shooting angle deviation, such as tilted shooting, thereby ensuring the accuracy of the original data of the first camera 11 measuring the width of the gap 2111. Through calibration, the detection value of the gap width calibration part 211 detected by the visual inspection device 1 can be obtained. By comparing this detection value with the standard value of the gap width calibration part 211, the detection accuracy of the visual inspection device 1 for the width of the gap 2111 can be determined.

[0051] In some embodiments of this application, the gap width calibration unit 211 includes a plurality of gaps 2111, which are arranged along a second direction X. Each gap 2111 has a width along a third direction Y, and the width of each gap 2111 increases sequentially along the second direction X. Specifically, the width of each gap 2111 can increase in an arithmetic sequence, a geometric sequence, or an irregular manner along the second direction X. By arranging the gaps 2111 along this second direction X, and adjusting the position of the visual detection device 1 along the second direction X using the transfer mechanism 3, the second camera 12 can be positioned vertically opposite each gap 2111, thereby vertically capturing images of each gap 2111. In this embodiment, the width of the same gap 2111 is constant, and there are four gap width calibration units 211. The widths of the four gaps 2111 are 0.06mm, 0.1mm, 0.2mm and 0.3mm respectively. The width range of the four gaps 2111 covers the width range of gaps 2111 that are commonly inspected in the battery production process, such as the gap between the tab and the casing, and the gap 2111 between the cell layers. By setting multiple gaps 2111, the width range required for visual inspection of battery gaps 2111 can be calibrated.

[0052] In some embodiments of this application, any two adjacent gaps 2111 are connected in the second direction X. Since there is no physical obstruction structure between adjacent gaps 2111 in the second direction X, the processing of each gap 2111 is convenient.

[0053] Specifically, the calibration component 2 includes a first plate 23 and a second plate 24, which are connected to each other along a third direction Y. The first plate 23 has a first mating surface 231 facing the second plate 24, and the second plate 24 has a second mating surface 241 facing the first plate 23. The first mating surface 231 has a plurality of grooves 232, each groove 232 having a groove bottom surface 2321. In the third direction Y, the groove bottom surface 2321 and the second mating surface 241 are arranged at intervals, and a gap 2111 is formed between the groove bottom surface 2321 and the second mating surface 241. The width of the traditional single-piece through-slit 2111 is determined by the diameter of the milling cutter or the diameter of the wire cutting wire. If a narrow slit 2111 of 0.06mm needs to be machined, problems such as milling cutter chipping are likely to occur, resulting in a large deviation in the width of the slit 2111. However, this application sets the calibration part 2 as a split structure, using the groove 232 of the first mating surface 231 to form the slit 2111. The width of the slit 2111 is controlled by the depth of the groove 232. The groove 232 can be machined using high-precision milling, grinding or slow wire cutting processes, and the depth accuracy can be controlled within ±0.001mm, which fully meets the high precision requirements of the calibration part 2 for the standard value of the slit 2111. When forming the gaps 2111 by grinding, a primary groove 232 with a depth of 0.06 mm can be ground first. Then, a secondary groove 232 with a depth of 0.04 mm can be ground on the bottom wall of the primary groove 232. The distance between the bottom wall of the secondary groove 232 and the bottom wall of the primary groove 232 is 0.04 mm, and the gap between the bottom wall of the secondary groove 232 and the first mating surface 231 is 0.1 mm. After that, a triangular groove 232 with a depth of 0.1 mm can be ground on the bottom wall of the secondary groove 232. The distance between the bottom wall of the tertiary groove 232 and the first mating surface is 0.2 mm. Finally, a quaternary groove 232 with a depth of 0.1 mm can be ground on the bottom wall of the tertiary groove 232. The distance between the bottom wall of the quaternary groove 232 and the first mating surface 231 is 0.3 mm.

[0054] In some embodiments of this application, the calibration end 21 further includes a step height calibration part 212, which is arranged at intervals from the gap width calibration part 211. The visual inspection device 1 also includes a second camera 12 for detecting step height. The second camera 12 can be moved to one side of the calibration member 2 along the first direction Z and observe the step height calibration part 212. Specifically, the setting of the second camera 12 enables the visual inspection device 1 to detect step height. The second camera 12 can detect the step of the battery cover and the casing, the height of the tab protrusion, the step height of the insulating sheet, etc. The step height calibration part can calibrate the second camera 12. Moreover, the step height calibration part 212 is integrated into the calibration member 2. By moving the visual inspection device 1 using the transfer mechanism 3, the calibration of the first camera 11 and the second camera 12 can be achieved in a single movement, further improving the calibration capability of the visual inspection system for the visual inspection device 1. The step height calibration unit 212 has a standard step height value, which is measured by high-precision measuring equipment such as a laser height gauge or a coordinate measuring machine. By comparing the measured step height value measured by the second camera 12 with the standard step height value, the measurement accuracy of the second camera 12 can be determined.

[0055] In some embodiments of this application, the step height calibration part 212 and the gap width calibration part 211 are arranged at intervals in the third direction Y; the step height calibration part 212 includes a reference surface 2121 and a plurality of measuring surfaces 2122, the plurality of measuring surfaces 2122 having a depth relative to the reference surface 2121 along the first direction Z; the arrangement of the plurality of measuring surfaces 2122 can increase the correction range of the second camera 12.

[0056] In some embodiments of this application, the gap width calibration section 211 and the plurality of measuring surfaces 2122 are respectively located on opposite sides of the reference surface 2121 along the third direction Y; this arrangement can use the reference surface 2121 to separate the gap width calibration section 211 and the plurality of measuring surfaces 2122, and avoid the measuring surfaces 2122 of different heights from affecting the shooting effect of the gap 2111 roll calibration section.

[0057] In some embodiments of this application, the gap width calibration part 211 and the plurality of measuring surfaces 2122 may be located on the same side of the reference surface 2121; the gap width calibration part 211, the plurality of measuring surfaces 2122 and the reference surface 2121 are arranged sequentially in the third direction Y, or the reference surface 2121, the plurality of measuring surfaces 2122 and the gap width calibration part 211 are arranged sequentially in the third direction Y. In this arrangement, the plurality of measuring surfaces 2122 and the gap width calibration part 211 need to be arranged at intervals. Compared with the arrangement in which the gap width calibration part 211 and the plurality of measuring surfaces 2122 are respectively located on opposite sides of the reference surface 2121 along the third direction Y, the calibration member 2 is thicker in the third direction Y.

[0058] In some embodiments of this application, a plurality of measuring surfaces 2122 are arranged along a second direction X, and the depth of each measuring surface 2122 increases along the second direction X. The depth of each measuring surface 2122 shows an increasing trend, and the increasing method can be an arithmetic sequence, a geometric sequence, or an irregular increase.

[0059] In some embodiments of this application, the measuring surface 2122 has six depths of 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, and 0.3 mm, respectively. The depth range of the six measuring surfaces 2122 covers the common range of step height in battery visual inspection.

[0060] In some embodiments of this application, the transfer mechanism 3 includes a support member 31 and a drive device 32 connected to each other. The support member 31 is fixed to the battery delivery device 4, and the drive device 32 is located on one side of the battery delivery device 4 along the first direction Z. The visual inspection device 1 is disposed on the drive device 32 and can be driven to move by the drive device 32. Specifically, the lower end of the support member 31 is connected to the battery delivery device 4, and the upper end of the support member 31 is connected to the drive device 32, so that the drive device 32 is located above the battery delivery device 4, avoiding the drive device 32 from affecting the operation of the battery delivery device 4.

[0061] In some embodiments of this application, the driving device 32 is a linear module, which includes a fixing member 321 and a moving member 322. The fixing member 321 is arranged along the second direction X, the moving member 322 is connected to the fixing member 321, and the visual inspection device 1 is connected to the moving member 322. The fixing member 321 can drive the moving member 322 to move along the second direction X, thereby driving the visual inspection device 1 to switch between the detection position 61 and the calibration position 62.

[0062] In some embodiments of this application, the transfer mechanism 3 further includes a distance adjustment device 33, which is connected to the drive device 32, and the vision inspection device 1 is connected to the distance adjustment device 33. The distance adjustment device 33 is configured to adjust the movement of the vision inspection device 1 in the first direction Z. Specifically, the distance adjustment device 33 can be an electric push rod or a pneumatic cylinder. The first camera 11 and the second camera 12 have an optimal focusing distance. The distance adjustment device 33 can adjust the distance between the camera and the battery under test 100 or the calibration member 2 by moving up and down, ensuring that the image is always in clear focus. After the calibration member 2 is processed, its height in the third direction Y is fixed. If the specifications of the battery under test 100 are changed during this process, the distance between the first camera 11 and the second camera 12 at the detection position 61 and the battery under test 100 will become farther or closer. If this distance exceeds the optimal focal length range, the distance can be adjusted by a telescopic device, so that the first camera 11 and the second camera 12 in the detection state can clearly capture the detection area of ​​the battery under test 100.

[0063] In some embodiments of this application, a first limit sensor 51, a second limit sensor 52, and a controller are also included. Both the first limit sensor 51 and the second limit sensor 52 are electrically connected to the controller. The driving device 32 includes a fixing member 321 and a moving member 322. The fixing member 321 is connected to the support member 31, and the moving member 322 is connected to the fixing member 321 and can slide along the fixing member 321. The visual detection device 1 is connected to the moving member 322. The first limit sensor 51 and the second limit sensor 52 are connected to the fixing member 321 and / or the support member 31. The first limit sensor 51 and the second limit sensor 52 are arranged at intervals in the second direction X; the visual inspection device 1 or the moving part 322 has a detection position 61 and a calibration position 62; the detection position 61 is used for the visual inspection device 1 to observe the battery 100 under test, and the calibration position 62 is used for the visual inspection device 1 to observe the calibration part 2; the visual inspection device 1 or the moving part 322 located at the detection position 61 is triggered to cooperate with the first limit sensor 51; the visual inspection device 1 and / or the moving part 322 located at the calibration position 62 is triggered to cooperate with the second limit sensor 52. Specifically, the first limit sensor 51 and the second limit sensor 52 can be photoelectric sensors or proximity sensors. If a photoelectric sensor is used, when the moving part 322 moves to the detection position 61, the first limit sensor 51 is triggered when the moving part 322 or the trigger on the moving part 322 blocks the optical path of the first sensor; when the moving part 322 moves to the calibration position 62, the second limit sensor 52 is triggered when the moving part 322 or the trigger on the moving part 322 blocks the optical path of the second sensor. The visual inspection device 1 is located at the inspection position 61. The moving part 322 or the trigger on the moving part 322 is triggered and engaged with the first limit sensor 51. The controller receives the trigger signal from the first sensor. The drive device 32 is in standby mode. Through a trigger calibration command, such as after being electrically connected to the trigger switch of the controller, the controller sends a calibration command to the servo motor of the drive device 32, causing the moving part 322 to move along the second direction X to the calibration position 62. When the moving part 322 slides to the calibration position 62, the moving part 322 or the trigger on the moving part 322 triggers the second limit sensor 52. The second limit sensor 52 sends a trigger signal to the controller, and the controller receives the trigger signal from the second sensor. After the trigger signal is received, a stop command is sent to the drive device 32, and the moving part 322 stops at the calibration position 62. After the calibration position 62 is completed, the vision inspection device 1 waits for the switching command. It can send a detection command to the controller through another trigger switch. After receiving the detection command, the controller sends a command to the drive device 32 to make the drive device 32 move the moving part 322 to the detection position 61. When the moving part 322 slides to the detection position 61, the moving part 322 or the trigger on the moving part 322 triggers the first limit sensor 51. The first limit sensor 51 sends a trigger command to the controller, and the controller sends a command to the drive device 32 to stop the moving part 322.

[0064] In this embodiment, the battery conveying device 4 includes a support frame 41 and a belt conveyor mechanism 42. The calibration component 2 is detachably connected to one side of the support frame 41 in the second direction X by fasteners. The calibration component 2 can be removed from the support frame 41 and moved to a higher precision coordinate measuring machine to test the accuracy of the calibration component 2. The belt conveyor mechanism 42 is connected to the middle of the support frame 41 in the second direction X, and the support component 31 is connected to both sides of the support frame 41 in the second direction X. The belt conveyor mechanism 42 includes a belt body 421 and a plurality of spacers 422 protruding from the belt body 421. The length direction of each spacer 422 is arranged along the second direction X, and the spacers 422 are evenly spaced along the length direction of the belt body 421. A slot 43 for holding the battery 100 under test is formed between two adjacent spacers 422, and at least a portion of the battery 100 under test is held in the slot 43. The gap between the visual inspection device 1 at the inspection position 61 and the belt body 421 forms an inspection area 44. After the conveyor belt carries the battery to be tested 100 into the inspection area 44, the visual inspection device 1 inspects the battery to be tested 100 located in the inspection area 44.

[0065] In summary, in the battery visual inspection system of this application, the calibration component 2 is located outside the inspection area 44, preventing the calibration component 2, transfer mechanism 3, and visual inspection device 1 from affecting the normal transport of the battery 100 under test when not calibrated. The transfer mechanism 3 is at least partially located on one side of the battery transport device 4 along the first direction Z. The visual inspection device 1 is connected to the transfer mechanism 3 and is configured to be driven by the transfer mechanism 3 to observe the calibration component 2 or the battery 100 under test. When the visual inspection device 1 needs to be calibrated, the battery transport device 4 is paused first, and then the transfer mechanism 3 is used to drive the visual inspection device 1 to the calibration component 2 to observe the calibration component 2, thus realizing the calibration operation. After the visual inspection device 1 is calibrated successfully, the transfer mechanism 3 is used to drive the visual inspection device 1 to the battery 100 under test, so that the battery 100 under test can be inspected. When calibrating the visual inspection device 1, the battery 100 under test located in the inspection area 44 on the battery transport device 4 does not need to be emptied, nor does the calibration component 2 need to be repeatedly installed, making the calibration operation simpler.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of this application, and these improvements and substitutions should also be considered within the scope of protection of this application.

Claims

1. A battery visual inspection system for inspecting a battery (100) under test, the battery visual inspection system having a first direction (Z), a second direction (X) and a third direction (Y) perpendicular to each other in pairs, characterized in that, It includes a visual inspection device (1), a calibration component (2), a transfer mechanism (3), and a battery delivery device (4); The battery delivery device (4) is used to deliver the battery under test (100) along the third direction (Y); The calibration element (2) is located on one side of the battery delivery device (4) along the second direction (X); The transfer mechanism (3) is at least partially located on one side of the battery delivery device (4) along the first direction (Z); The visual inspection device (1) is connected to the transfer mechanism (3) and is configured to be driven to move by the transfer mechanism (3) to observe the calibration element (2) or the battery under test (100).

2. The battery vision inspection system of claim 1, wherein, The calibration member (2) has a calibration end (21) at one end along the first direction (Z), and the calibration end (21) has a gap width calibration part (211); The visual inspection device (1) includes a first camera (11); The first camera (11) can be moved to one side of the calibration member (2) along the first direction (Z) and observe the slit width calibration part (211).

3. The battery vision inspection system of claim 2, wherein, The gap width calibration part (211) includes a plurality of gaps (2111), which are arranged along the second direction (X). The gaps (2111) have a width along the third direction (Y). In the second direction (X), the width of each gap (2111) increases sequentially.

4. The battery vision inspection system of claim 3, wherein, Any two adjacent gaps (2111) are connected in the second direction (X).

5. The battery vision inspection system of claim 3, wherein, The calibration component (2) includes a first plate (23) and a second plate (24), the first plate (23) and the second plate (24) being interconnected along the third direction (Y); the first plate (23) has a first mating surface (231) facing the second plate (24), and the second plate (24) has a second mating surface (241) facing the first plate (23); The first mating surface (231) has a plurality of grooves (232), each groove (232) having a bottom surface (2321); in the third direction (Y), the bottom surface (2321) and the second mating surface (241) are arranged at intervals, and the gap (2111) is formed between the bottom surface (2321) and the second mating surface (241).

6. The battery vision inspection system of claim 2, wherein, The calibration end (21) also has a step height calibration part (212), which is arranged at intervals from the gap width calibration part (211); The visual inspection device (1) further includes a second camera (12) for detecting the step height, the second camera (12) being movable to one side of the calibration member (2) along the first direction (Z) and observing the step height calibration part (212).

7. The battery vision inspection system of claim 6, wherein, The step height calibration part (212) and the gap width calibration part (211) are arranged at intervals in the third direction (Y); The step height calibration unit (212) includes a reference surface (2121) and a plurality of measuring surfaces (2122), the plurality of measuring surfaces (2122) having a depth relative to the reference surface (2121) along the first direction (Z); The gap width calibration part (211) and the plurality of measuring surfaces (2122) are respectively located on opposite sides of the reference surface (2121) along the third direction (Y); or the plurality of measuring surfaces (2122) are arranged along the second direction (X), and the depth of each measuring surface (2122) increases along the second direction (X).

8. The battery vision inspection system of claim 1, wherein, The transfer mechanism (3) includes a support member (31) and a drive device (32) connected to each other. The support member (31) is fixed to the battery delivery device (4). The drive device (32) is located on one side of the battery delivery device (4) along the first direction (Z). The visual inspection device (1) is disposed on the drive device (32) and can be driven to move by the drive device (32).

9. The battery vision inspection system of claim 8, wherein, The transfer mechanism (3) further includes a distance adjustment device (33), which is connected to the drive device (32), and the vision detection device (1) is connected to the distance adjustment device (33); The distance adjustment device (33) is configured to adjust the visual detection device (1) to move in the first direction (Z).

10. The battery vision inspection system of claim 8, wherein, It also includes a first limit sensor (51), a second limit sensor (52) and a controller, wherein the first limit sensor (51) and the second limit sensor (52) are both electrically connected to the controller; The driving device (32) includes a fixing member (321) and a moving member (322). The fixing member (321) is connected to the support member (31), and the moving member (322) is connected to the fixing member (321) and can slide along the fixing member (321). The visual inspection device (1) is connected to the moving member (322). The first limiting sensor (51) and the second limiting sensor (52) are connected to the fixing member (321) and / or the support member (31), and the first limiting sensor (51) and the second limiting sensor (52) are arranged at intervals in the second direction (X); The visual inspection device (1) or the moving part (322) has a detection position (61) and a calibration position (62); the detection position (61) is used for the visual inspection device (1) to observe the battery under test (100), and the calibration position (62) is used for the visual inspection device (1) to observe the calibration part (2); The visual detection device (1) or the moving part (322) located at the detection position (61) is triggered to cooperate with the first limit sensor (51); the visual detection device (1) and / or the moving part (322) located at the marking position (62) is triggered to cooperate with the second limit sensor (52).

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