DETECTION DEVICE AND DETECTION METHOD FOR CELL DETECTION - Patent application

Abstract

A detection device and a detection method for detecting cells are provided. The detection device includes a support mechanism, a rotation mechanism, a transport mechanism, and a detection mechanism. The rotation mechanism is provided on the support mechanism and includes a rotating holder provided on the support mechanism and a turntable that is rotatable in a circumferential direction relative to the rotating holder. The transport mechanism passes through the turntable and transports the cells. The detection mechanism is provided on the turntable and includes a radiation source and a detector, and the radiation source and the detector detect cells on the transport mechanism and rotate in a circumferential direction on the turntable.

Description

[Technical Field]

[0001] This application claims priority from Chinese Patent Application No. 202310695780.5 filed on June 12, 2023, the contents of which are incorporated herein by reference.

[0002] The present disclosure relates to the field of non-destructive detection, and in particular to a detection device and a detection method for cell detection. [Background technology]

[0003] As the demand for lithium batteries continues to grow, the market is placing increasing demands on the quality of lithium batteries, and currently, the consistency requirements for lithium batteries, especially power batteries, are becoming increasingly stringent. Some related technologies use traditional industrial CT solutions, where the detector and optical machine are stationary to scan the cells, which places high requirements on the position accuracy and corner deformation of the cell corners to be detected. In the detection process, due to the influence of objective factors such as cell position and cell corner deformation, it is difficult to improve the detection quality and the false positive rate is too high. Summary of the Invention

[0004] According to a detection device according to an embodiment of the first aspect of the present disclosure, the detection device includes a support mechanism, a rotation mechanism, a transport mechanism, a detection mechanism, and an angle sensing mechanism. The rotation mechanism is provided on the support mechanism and includes a rotating holder provided on the support mechanism and a turntable that is rotatable in a circumferential direction relative to the rotating holder. The transport mechanism passes through the turntable and transports cells. The detection mechanism is provided on the turntable and includes a radiation source and a detector, which detect the cells on the transport mechanism and rotate in a circumferential direction on the turntable. The angle sensing mechanism is signal-connected to the rotation mechanism and detects whether the radiation source or the detector has reached a predetermined section, and controls the turntable to reduce its rotation speed when the radiation source or the detector has reached the predetermined section.

[0005] In some embodiments, the angle sensing mechanism includes at least two angle sensors spaced apart along the circumference of the rotating holder to detect the position of the radiation source or the detector, and to reduce the rotation speed of the turntable when the radiation source or the detector has rotated to a position between the two angle sensors.

[0006] In some embodiments, the angle sensing mechanism includes a first angle sensor, a second angle sensor, a third angle sensor, and a fourth angle sensor that are spaced apart in sequence along the circumferential direction of the rotating holder. The first angle sensor, the second angle sensor, the third angle sensor, and the fourth angle sensor detect a position of the radiation source or the detector, and instruct the rotating disk to reduce its rotation speed when the radiation source or the detector has rotated to a position between the first angle sensor and the second angle sensor or between the third angle sensor and the fourth angle sensor, while instructing the rotating disk to increase its rotation speed when the radiation source or the detector has rotated to a position between the second angle sensor and the third angle sensor or between the fourth angle sensor and the first angle sensor.

[0007] In some embodiments, two radial movement mechanisms are provided on the rotating disk, and the radial movement mechanisms move toward and away from the center of the rotating disk along the radial direction of the rotating disk.

[0008] Furthermore, the radiation source and the detector are mounted on the radial movement mechanism so that the radiation source and the detector can be switched between a detection position and an avoidance position.

[0009] In some embodiments, the rotation mechanism further includes a position sensor capable of detecting the position of the cell on the transport mechanism.

[0010] In some embodiments, the detection mechanism further includes a screening mechanism that transfers the cell to a discard area if the detection mechanism detects that the cell is unacceptable.

[0011] According to a detection method for cell detection of an embodiment of the second aspect of the present disclosure, a cell is detected by a detection device, and the detection method includes placing the cell on a transport mechanism, the transport mechanism transporting the cell to a detection area, an angle sensing mechanism detecting whether a radiation source or a detector has reached a predetermined section, and when the radiation source or the detector has reached the predetermined section, controlling a turntable to reduce the rotation speed, and a detection mechanism detecting defects in the cell in the predetermined section.

[0012] In some embodiments, when the cell is placed on the transport mechanism, the cell is positioned at a predetermined angle, wherein the predetermined angle is between 15° and 75°.

[0013] In some embodiments, the method further includes the position sensor detecting the position of the cell before the detection mechanism detects the cell, the transport mechanism transporting the cell to the detection area if the position of the cell does not interfere with the detection mechanism, and the detection mechanism taking action to avoid interference with the position of the cell.

[0014] Furthermore, before the detection mechanism detects the cell, the turntable rotates at a certain angle, taking the radiation source and the detector with it, to avoid the cell; the transport mechanism transports the cell to a detection area; the turntable rotates in a circumferential direction, taking the radiation source and the detector with it, to detect the cell; and the transport mechanism transports the cell and moves it out of the detection area.

[0015] In some embodiments, before the detection mechanism detects the cell, the turntable rotates circumferentially, taking the radiation source and the detector with it; the radiation source and the detector are switched from the detection position to an avoidance position; the transport mechanism transports the cell to a detection area; the radiation source and the detector are switched from the avoidance position to the detection position; the turntable rotates circumferentially, taking the radiation source and the detector with it, to detect the cell; and the transport mechanism transports the cell out of the detection area.

[0016] In some embodiments, when the turntable rotates in a circumferential direction carrying the radiation source and the detector to detect the cell, the method includes causing the turntable to reduce the rotation speed when the radiation source or the detector has rotated to a position between the first angle sensor and the second angle sensor, or between the third angle sensor and the fourth angle sensor, and causing the turntable to increase the rotation speed when the radiation source or the detector has rotated to a position between the second angle sensor and the third angle sensor, or between the fourth angle sensor and the first angle sensor.

[0017] Optionally, the screening mechanism transfers the cells that fail to pass to a waste area. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0018] The above and / or additional features and advantages of the present disclosure will become apparent and readily understood by describing embodiments of the present disclosure with reference to the following drawings. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1 is a front view of a detection device according to an embodiment of the first aspect of the present disclosure. [Figure 2] FIG. 2 is a plan cross-sectional view of a detection device according to an embodiment of the first aspect of the present disclosure. [Explanation of symbols]

[0020] Detection device 100 Support mechanism 10 Rotation mechanism 20 Rotating holder 21 Turntable 22 Radial movement mechanism 221 Detection mechanism 23 radiation source 231 Detector 232 Rotating Connector 24 Position Sensor 25 Conveyance mechanism 30 Positioning module 31 First positioning portion 311 Second positioning portion 312 Screening Mechanism 40 Angle sensing mechanism 50 First angle sensor 51 Second angle sensor 52 Third angle sensor 53 Fourth angle sensor 54 Cell 200 DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present disclosure will be described in detail, and examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and are intended to interpret the present disclosure, but should not be understood as limitations on the present disclosure.

[0022] In describing this disclosure, orientations and positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "top," "bottom," "front," "rear," "left," "right," "vertical," "horizontal," "ceiling," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are intended to illustrate and simplify the disclosure and are not intended to expressly or imply that the devices or elements referenced must have a particular orientation or be constructed and operated in a particular orientation, and should not be construed as limitations on the disclosure. Furthermore, features qualified by "first" and "second" may expressly or implicitly include one or more of those features. In describing this disclosure, "plurality" means two or more, unless otherwise specified.

[0023] It should be noted that in the description of this disclosure, unless otherwise expressly stated and limited, the terms "mounted," "coupled," and "connected" should be understood in a broad sense, for example, to mean a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or an internal communication between two components. Those skilled in the art will be able to understand the specific meaning of the above terms in this disclosure on a case-by-case basis.

[0024] The present disclosure provides a detection apparatus that can improve detection quality and detection efficiency while reducing cell placement requirements.

[0025] According to a detection device according to an embodiment of the first aspect of the present disclosure, a rotation mechanism is provided on a support mechanism, and a detection mechanism is provided on the rotation mechanism, the detection mechanism can rotate in a circumferential direction on the rotation mechanism, a transport mechanism passes through a turntable, and cells can pass through the turntable on the transport mechanism, thereby achieving continuous detection of the cells, and an angle sensing mechanism can detect the rotation angle of the detection mechanism. When the detection device needs to detect a cell, the transport mechanism first transports the cell to a detection area, and the radiation source and detector of the detection mechanism rotate in a circumferential direction on the turntable to detect the cell located within the detection area, where the detection area is an area between the connecting lines between the radiation source and the detector, and the detection mechanism can detect the cell in this area. The detection mechanism rotates circumferentially on the turntable, thereby detecting cells in multiple directions and detecting the alignment status and welding status of the tabs for each cell. The placement position and placement angle of the cells on the transport mechanism are not limited, and when the radiation source or detector rotates to a predetermined section, the angle sensing mechanism sends a signal to the rotation mechanism to reduce the rotation speed of the turntable. In this case, the detection mechanism detects cells more precisely at a relatively low rotation speed while maintaining the detection frequency. This allows the detection device to improve detection quality and detection efficiency while reducing cell placement requirements.

[0026] The present disclosure provides a detection method for detecting cells using the above detection device.

[0027] A detection device 100 and a detection method for detecting a cell 200 according to an embodiment of the present disclosure will be described below with reference to FIGS.

[0028] As shown in Figures 1 and 2, according to the detection device 100 of the embodiment of the first aspect of the present disclosure, the detection device 100 includes a support mechanism 10, a rotation mechanism 20, a conveying mechanism 30, a detection mechanism 23, and an angle sensing mechanism 50.

[0029] However, the rotation mechanism 20 is provided on the support mechanism 10, and includes a rotary holder 21 provided on the support mechanism 10, and a turntable 22 that is rotatable in a circumferential direction relative to the rotary holder 21. The transport mechanism 30 passes through the turntable 22, and the transport mechanism 30 transports the cells 200. The detection mechanism 23 is provided on the turntable 22, and includes a radiation source 231 and a detector 232. The radiation source 231 and the detector 232 detect the cells 200 on the transport mechanism 30, and the radiation source 231 and the detector 232 rotate in a circumferential direction on the turntable 22. The angle sensing mechanism 50 is signal-connected to the rotation mechanism 20, and is used to detect whether the radiation source 231 or the detector 232 has reached a predetermined section, and controls the turntable 22 to reduce the rotation speed when the radiation source 231 or the detector 232 has reached the predetermined section.

[0030] Specifically, the rotation mechanism 20 is provided on the support mechanism 10, and the rotation mechanism 20 is provided with the detection mechanism 23. The detection mechanism 23 is rotatable in a circumferential direction on the rotation mechanism 20, the transport mechanism 30 passes through the turntable 22, and the cells 200 can pass through the turntable 22 on the transport mechanism 30, thereby achieving continuous detection of the cells 200, and the angle sensing mechanism can detect the rotation angle of the detection mechanism. When the detection device 100 needs to detect a cell 200, the transport mechanism 30 first transports the cell 200 to a detection area, and the radiation source 231 and the detector 232 of the detection mechanism 23 rotate in a circumferential direction on the turntable 22 and further detect the cell 200 located within the detection area, where the detection area is the area between the connecting lines of the radiation source 231 and the detector 232, and the detection mechanism 23 can detect the cell 200 in this area. The detection mechanism 23 rotates circumferentially on the turntable 22, thereby enabling detection of the cells 200 in multiple directions. This allows detection of the tab alignment status and tab welding status for each cell 200, and is not limited to the placement position and placement angle of the cells 200 on the conveying mechanism 30. When the radiation source 231 or the detector 232 rotates to a predetermined section, the angle sensing mechanism 50 sends a signal to the rotation mechanism 20 to reduce the rotation speed of the turntable 22. At this time, the detection frequency of the detection mechanism 23 remains the same, and the relatively low rotation speed allows for more precise detection of the cells.

[0031] As will be understood, the pre-established section is set by the angle sensing mechanism 50, and the pre-established section may be any area in the circumferential direction of the turntable 22. For example, when the cell 200 is placed on the conveying mechanism 30 and the conveying mechanism 30 conveys the cell 200 to the detection area, the pre-established section may be a part of the area near the side of the cell 200 in the circumferential direction of the turntable 22, or a part of the area near the top or bottom of the cell 200 in the circumferential direction of the turntable 22, and can be set according to actual needs.

[0032] If the pre-established section is part of an area close to the side of the cell 200 in the circumferential direction of the turntable 22, the turntable 22 reduces its speed when it moves to this area, bringing the radiation source 231 or the detector 232 with it, and the detection mechanism 23 at this time increases the detection time within the pre-established area, thereby increasing the amount of detection on the side of the cell 200 and improving the detection accuracy.

[0033] The rotation mechanism 20 is provided on the support mechanism 10 via a rotation holder 21, the rotation holder 21 can support a turntable 22, the turntable 22 can rotate circumferentially on the rotation holder 21, the radiation source 231 and the detector 232 are fixed to the turntable 22 and rotate synchronously with the turntable 22, when detecting the cell 200, the radiation source 231 and the detector 232 rotate circumferentially around the cell 200 located within the detection area, so that beams can be emitted and scanned to the cell 200 in multiple directions. By rotating the turntable 22 carrying the radiation source 231 and the detector 232 in the circumferential direction, the cell 200 located within the detection area can be scanned in multiple directions, and the detection quality of the cell 200 can be improved.

[0034] According to the detection device 100 of the embodiment of the first aspect of the present disclosure, the detection device 100 can improve detection quality and detection efficiency while reducing the arrangement requirements for the cells 200.

[0035] Optionally, the detection device 100 further includes a detection control system, the detection control system comprising: When the cell 200 enters the detection area, it collides with the rotation mechanism, and the rotation mechanism 20 controls the turntable to rotate the radiation source 231 and the detector 232 at a certain angle to avoid the cell 200; When the cell 200 enters the detection area, it collides with the rotation mechanism, and the radiation source 231 and the detector 232 are switched from the detection position to the avoidance position to avoid the cell 200; The angle sensing mechanism 50 detects whether the radiation source 231 or the detector 232 has reached a predetermined section, and controls the turntable 22 to reduce the rotation speed when the radiation source 231 or the detector 232 has reached the predetermined section.

[0036] Furthermore, the rotation mechanism 20 further includes a rotation connector 24 that is provided between the rotation holder 21 and the turntable 22 and reduces the resistance between the rotation holder 21 and the turntable 22 so that the turntable 22 can rotate freely.

[0037] Here, the configuration of the rotary connector 24 is not limited, and the rotary connector 24 may be an assembly of a circular slide rail and a circular slider, or may be a bearing provided between the rotary holder 21 and the rotating disk 22.

[0038] When the rotary connector 24 is a circular slide rail and a circular slider, the circular slide rail is provided on one of the rotary holder 21 and the turntable 22, and the circular slider is provided on the other of the rotary holder 21 and the turntable 22, so that the circular slide rail and the circular slider mesh with each other, allowing the turntable 22 to rotate freely relative to the rotary holder 21.

[0039] Optionally, the rotation mechanism 20 further includes a drive motor fixed on the rotation holder 21, a drive gear provided on the motor shaft of the drive motor, and a driven gear provided on the outside of the turntable 22, and the drive gear and the driven gear mesh with each other. As a result, the turntable 22 rotates in the circumferential direction when driven by the drive motor, thereby increasing the detection efficiency of the cells 200.

[0040] The driven gear may be the entire circumference of the external teeth provided on the outside of the turntable 22, or may be a part of the external teeth provided on the outside of the turntable 22. When the driven gear is the entire circumference of the external teeth provided on the outside of the turntable 22, the turntable 22 can rotate continuously in the circumferential direction when driven by the drive motor, whereas when the driven gear is a part of the external teeth provided on the outside of the turntable 22, the turntable 22 can rotate back and forth by a certain angle when driven by the drive motor, and this can be selected according to actual needs.

[0041] In some embodiments, the angle sensing mechanism 50 includes at least two angle sensors spaced apart along the circumferential direction of the rotating holder 21, detects the position of the radiation source 231 or the detector 232, and reduces the rotation speed of the turntable 22 when the radiation source 231 or the detector 232 rotates to a position between the two angle sensors, with the pre-defined section being the section between two adjacent angle sensors.

[0042] Furthermore, the angle sensing mechanism 50 includes a first angle sensor 51, a second angle sensor 52, a third angle sensor 53, and a fourth angle sensor 54 that are arranged in sequence at intervals along the circumferential direction of the rotating holder 21. The first angle sensor 51, the second angle sensor 52, the third angle sensor 53, and the fourth angle sensor 54 detect the position of the radiation source 231 or the detector 232, and when the radiation source 231 or the detector 232 rotates to between the first angle sensor 51 and the second angle sensor 52, or between the third angle sensor 53 and the fourth angle sensor 54, the turntable 22 is caused to reduce its rotation speed, while when the radiation source 231 or the detector 232 rotates to between the second angle sensor 52 and the third angle sensor 53, or between the fourth angle sensor 54 and the first angle sensor 51, the turntable 22 is caused to increase its rotation speed, where the predetermined sections are the section between the first angle sensor 51 and the second angle sensor 52, and the section between the third angle sensor 53 and the fourth angle sensor 54.

[0043] Specifically, by providing multiple angle sensors, the turntable 22 rotates at a variable speed while carrying the detection mechanism 23. The detection mechanism 23 reduces its rotation speed between the first angle sensor 51 and the second angle sensor 52 and between the third angle sensor 53 and the fourth angle sensor 54, thereby enabling more accurate detection, while increasing its rotation speed between the second angle sensor 52 and the third angle sensor 53 and between the fourth angle sensor 54 and the first angle sensor 51. When the detection device 100 detects a cell 200, the transport mechanism 30 first transports the cell 200 to the detection area. Due to the structural characteristics of the cell 200, its side surfaces contain a lot of detection information. Therefore, in related art, the detection device generally rotates at a uniform speed to detect the cell. However, when the radiation source 231 or the detector 232 moves to the side of the cell, the speed is high and the collected information is relatively small, resulting in poor cell detection quality. By providing the angle sensing mechanism 50, the turntable 22 is controlled to reduce the rotation speed when the radiation source 231 or the detector 232 moves to the side of the cell, thereby significantly increasing the amount of information collected and further improving detection accuracy, while the rotation speed of the detection mechanism 23 can be increased for the top or bottom surface of the cell where there is less detection information, further ensuring detection efficiency.

[0044] Thus, by providing the angle sensing mechanism 50, the detection accuracy and detection efficiency of the detection device can be further improved.

[0045] Alternatively, the angle sensing mechanism may be an encoder arranged coaxially with the drive motor for detecting whether the radiation source or detector has reached a predetermined section, and the encoder controls the turntable to reduce the rotation speed when the radiation source or detector has reached the predetermined section.

[0046] In some embodiments, the turntable 22 is provided with two radial movement mechanisms 221 arranged relative to each other, and the radial movement mechanisms 221 can move toward or away from the center of the turntable 22 along the radial direction of the turntable 22. The radiation source 231 and the detector 232 are arranged on the radial movement mechanisms 221, so that the radiation source 231 and the detector 232 can switch between a detection position and an avoidance position.

[0047] Specifically, the radial movement mechanism 221 allows the radiation source 231 and the detector 232 to move in the diameter direction of the turntable 22, thereby allowing them to move closer to or farther away from each other. When the radiation source 231 and the detector 232 are both close to the center of the turntable 22, they can move to a detection position. At this time, the distance between the radiation source 231 and the detector 232 is short, resulting in relatively high detection accuracy. When the radiation source 231 and the detector 232 are both away from the center of the turntable 22, they can move to an avoidance position. At this time, the distance between the radiation source 231 and the detector 232 is far, so when the transport mechanism 30 transports the cell 200 to the detection area, the edge corner of the cell 200 may interfere with the detection mechanism 23. However, by switching the radiation source 231 and the detector 232 to the avoidance position, they can move away from the cell 200, thereby preventing damage to the cell 200 and the detection mechanism 23.

[0048] This allows the radiation source 231 and the detector 232 to be switched between the detection position and the avoidance position, thereby ensuring detection accuracy and increasing the safety of detection.

[0049] Furthermore, the transport mechanism 30 further includes a plurality of positioning modules 31 spaced apart from one another for positioning the cells 200. When the cells 200 are placed on the transport mechanism 30, the positioning modules 31 position the cells 200 so that each of the detectable edge corners of the cells 200 is positioned appropriately. This ensures that when the transport mechanism 30 moves the cells 200 into the detection area, the detectable edge corners of each cell 200 are positioned in the same position, further improving detection accuracy.

[0050] Optionally, the positioning module 31 includes a first positioning portion 311 and a second positioning portion 312, which are perpendicular to each other, and both the first positioning portion 311 and the second positioning portion 312 are fixed to the conveying mechanism 30, a positioning space is formed inside the corner formed by the first positioning portion 311 and the second positioning portion 312, the edge corner of the cell 200 to be detected is placed in the positioning space, and the two adjacent sides of the cell 200 abut against the first positioning portion 311 and the second positioning portion 312, respectively.

[0051] Specifically, when cell 200 needs to be detected, cell 200 is placed on conveying mechanism 30, one edge corner of cell 200 is placed in the positioning space, and two adjacent sides of the edge corner are abutted against first positioning portion 311 and second positioning portion 312, at which time cell 200 can be fixed on conveying mechanism 30. In this way, cell 200 can be positioned in order and the positioning regularity of cell 200 can be guaranteed.

[0052] As a result, when the edge angle of the cell 200 is subsequently detected by the detection mechanism 23, it is possible to detect it without having to adjust the position of the cell 200, and it is possible to increase the detection efficiency while ensuring the detection accuracy.

[0053] It should be noted that the connection form between the positioning module 31 and the conveying mechanism 30 is not limited here, and for example, the positioning module 31 can be connected to the conveying mechanism 30 by adhesive bonding, screw fastening, or snap fastening, and can be selected according to actual needs.

[0054] Further optionally, the first positioning portion 311 and the second positioning portion 312 may be grooves or protrusions formed on the conveying mechanism 30, and when the cell 200 is placed on the conveying mechanism 30, the edge corners of the cell 200 can be inserted into the grooves or protrusions, thereby fixing the position of the cell 200.

[0055] Optionally, when the positioning module 31 is fixed to the transport mechanism 30, it has a preset angle of 0°-75°.

[0056] For example, the preset angles can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, and 75°, and can be set according to actual needs.

[0057] It should be noted that the number and installation position of the positioning modules 31 in the conveying mechanism 30 are not limited here. For example, the positioning modules 31 may be arranged on the center line of the conveying mechanism 30 and spaced apart, or the positioning modules 31 may be arranged on both sides of the center line of the conveying mechanism 30 and arranged in parallel, and can be selected according to actual needs.

[0058] As can be seen, the arrangement of the cells 200 in the transport mechanism 30 varies depending on the installation form of the positioning module 31.

[0059] When the positioning modules 31 are provided on the center line of the transport mechanism 30 and are provided at equal intervals, in order to ensure the detection quality of the detection mechanism 23 for the cells 200, the positioning modules 31 are provided at a predetermined angle so that the detection mechanism 23 can detect the edge corners of the cells 200. The edge corners of the cells 200 are placed in the positioning space, and two adjacent sides of the edge corners are respectively abutted against the first positioning portion 311 and the second positioning portion 312, thereby allowing multiple cells 200 to be placed at equal intervals on the transport mechanism 30. As shown in FIG. 2, if the predetermined angle of the positioning modules 31 is set to, for example, 45°, the cells 200 are also arranged on the transport mechanism 30 at an inclination of 45°. When the transport mechanism 30 transports the cells 200 to the detection area, the detection mechanism 23 can detect the edge corners of the cells 200 in the circumferential direction, further improving detection accuracy.

[0060] When the positioning modules 31 are installed on both sides of the center line of the conveying mechanism 30 and are installed in parallel, the positioning modules 31 can be arranged diagonally with a predetermined angle of 0°, in this way, two cells 200 can be fixed simultaneously. When the detection device 100 is equipped with a rotation stage, the rotation stage can be used to set the rotation mechanism 20 at a certain angle so that it forms a certain angle with the center of the detection mechanism 23 and the conveying mechanism 30. In this case, two cells 200 are installed on the conveying mechanism 30, and the two cells 200 are installed on both sides of the center line of the conveying mechanism 30 diagonally, connected from the front to the rear according to the positioning modules 31. The detection mechanism 23 can detect the edge angles of the two cells 200 simultaneously, further improving detection efficiency.

[0061] In some embodiments, the rotation mechanism 20 further includes a position sensor 25 that can detect the position of the cell 200 in the transport mechanism 30. The position sensor 25 can detect the position of the cell 200 in the transport mechanism 30, and the position sensor 25 is signal-connected to the rotation mechanism 20. Before the transport mechanism 30 transports the cell 200 and enters the detection area, the position sensor 25 performs detection. If the position sensor 25 detects that the position of the cell 200 may soon interfere with the detection mechanism 23, it sends an avoidance signal to the rotation mechanism 20, causing the turntable 22 to stop rotating in the circumferential direction, taking the radiation source 231 and the detector 232 with it, and to avoid the cell 200. If the position sensor 25 detects that the position of the cell 200 may not interfere with the detection mechanism 23 or does not detect the cell 200, the turntable 22 continues to rotate in the circumferential direction, taking the radiation source 231 and the detector 232 with it.

[0062] This makes it possible to prevent the cell 200 from colliding with the detection mechanism 23 when the cell 200 is being detected, thereby increasing the safety of detection.

[0063] Here, the type of the position sensor 25 is not limited, and the position sensor 25 may be, for example, an optical position sensor 25, an ultrasonic position sensor 25, a light curtain sensor, or a camera.

[0064] When the position sensor 25 is an optical position sensor 25, a light beam is emitted by the launcher. If the cell 200 located on the conveying mechanism 30 interferes with the rotating mechanism 20, the light beam emitted from the launcher touches the cell 200 and is then reflected back to the optical position sensor 25. At this time, the sensor can calculate the distance between the rotating mechanism 20 and the cell 200. If the distance between the two is smaller than a set threshold, the optical position sensor 25 sends an avoidance signal to the rotating mechanism 20, causing the turntable 22 to stop rotating in the circumferential direction along with the radiation source 231 and the detector 232 and avoid the cell 200. If the optical position sensor 25 does not receive a reflected signal, or if the distance between the cell 200 and the rotating mechanism 20 is calculated to be equal to or greater than the set threshold after receiving the signal, the turntable 22 continues to rotate in the circumferential direction along with the radiation source 231 and the detector 232.

[0065] When the position sensor 25 is a light curtain sensor, the light curtain sensor can be installed upstream of the rotating mechanism 20 and near the conveying mechanism 30, and when the light curtain sensor detects that the light curtain is obstructed, it sends an avoidance signal to the rotating mechanism 20, causing the radiation source 231 and the detector 232 to stop rotating in the circumferential direction and avoid the cell 200, and when the light curtain sensor detects that the light curtain is not obstructed, the turntable 22 continues to rotate in the circumferential direction, causing the radiation source 231 and the detector 232 to continue rotating in the circumferential direction.

[0066] When the position sensor 25 is a camera, the camera is mounted on the rotating holder 21, and the camera can photograph the cell 200 positioned on the conveying mechanism 30. By identifying the position of the cell 200 in the image, it can determine whether the cell 200 will interfere with the rotating mechanism 20. When it is calculated from the image taken by the camera that the cell 200 is about to collide with the rotating mechanism 20, the camera sends an avoidance signal to the rotating mechanism 20, and the turntable 22 stops rotating in the circumferential direction, taking the radiation source 231 and the detector 232 with it, and avoids the cell 200. When the cell 200 does not appear in the image taken by the camera, or when it is calculated from the image taken by the camera that the cell 200 will not be able to collide with the rotating mechanism 20, the camera sends a signal to the turntable 22, and the turntable 22 continues rotating in the circumferential direction, taking the radiation source 231 and the detector 232 with it.

[0067] Note that the position of the position sensor 25 on the detection device 100 is not specifically limited, and it is sufficient that the position sensor 25 can detect whether the cell 200 and the rotation mechanism 20 collide, and it can be installed as needed.

[0068] In some embodiments, the detection mechanism 23 further includes a screening mechanism 40 that transports the cell 200 to a disposal area when the detection mechanism 23 detects that the cell 200 has failed.

[0069] Specifically, when the detection mechanism 23 detects that a cell 200 is unacceptable, the screening mechanism 40 transfers the unacceptable cell 200 to a disposal area. After the detection mechanism 23 completes the detection of the cell 200, if the cell 200 does not meet the requirements due to an internal defect, the screening mechanism 40 can screen the unacceptable cell 200 in the transport mechanism 30 and transfer it to a disposal area, so that the acceptable cell 200 can proceed to the next process. This can improve the detection efficiency of the detection device 100.

[0070] As can be understood, in the present disclosure, the detection device 100 and the corresponding detection system can perform one-to-one numbering of the cells 200 detected by the detection device 100, and when the screening mechanism 40 transports the rejected cells 200 to a disposal area, the detection system also deletes the numbers and images corresponding to the rejected cells 200.

[0071] That is, the cell 200 is first detected by the detection mechanism 23 while being transported by the transport mechanism 30, and if the detection mechanism 23 detects that the cell 200 is unacceptable, the screening mechanism 40 transports the cell 200 to a disposal area, while the number and image corresponding to the unacceptable cell 200 are also deleted within the detection system. If the cell 200 passes the detection of the detection mechanism 23 and is determined to be acceptable, the acceptable cell 200 is allowed to proceed to the next process. This reduces the system resource occupation rate, thereby further improving the detection efficiency of the detection device 100.

[0072] According to a detection method for detecting a cell 200 according to an embodiment of the second aspect of the present disclosure, the detection method is applied to any one of the detection devices 100 of the above-mentioned embodiments, and the detection method includes placing the cell 200 on a conveying mechanism 30, the conveying mechanism 30 conveying the cell 200, and the detection mechanism 23 detecting the cell 200.

[0073] In some embodiments, when the cell 200 is placed on the transport mechanism 30, the cell 200 is positioned at a predetermined angle of 15°-75°.

[0074] Specifically, by positioning the cell 200 at a predetermined angle, the center line of the cell 200 and the extension direction of the conveying mechanism 30 can form a certain angle, that is, the cell 200 is positioned at an angle on the conveying mechanism 30, and in this way, when the conveying mechanism 30 moves the cell 200 to the detection area, the edge corner of the cell 200 can be positioned in the detection area.

[0075] This makes it possible to improve the detection effect and increase the detection efficiency of the detection device 100.

[0076] For example, the preset angles may be 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, and 75°, and can be set according to actual needs.

[0077] As shown in FIG. 2, a method for detecting a cell 200 will be described below with reference to a specific embodiment of the present disclosure.

[0078] Example 1: The cell 200 is placed on the transport mechanism 30, and the cell 200 is positioned at a predetermined angle.

[0079] The turntable 22 rotates in a circumferential direction, carrying the radiation source 231 and the detector 232 with it. At this time, the transport mechanism 30 is installed extending parallel to the center of the rotation axis of the detection mechanism 23, and the transport mechanism 30 transports the cell 200.

[0080] The position sensor 25 detects the position of the cell 200, and when it detects that the cell 200 may collide with the rotation mechanism 20 when it enters the detection area, it transmits an avoidance signal to the rotation mechanism 20.

[0081] After receiving the avoidance signal from the position sensor 25 , the rotation mechanism 20 controls the rotating disk to rotate at a certain angle, taking the radiation source 231 and the detector 232 with it, to avoid the cell 200 .

[0082] The transport mechanism 30 transports the cell 200 to the detection area.

[0083] The position sensor 25 detects the position of the cell 200 , and sends a signal to the rotation mechanism 20 when it does not detect the cell 200 or when it detects that the position of the cell 200 is such that it cannot collide with the rotation mechanism 20 .

[0084] After receiving a signal from the position sensor 25, the rotation mechanism 20 controls the turntable 22 to rotate in a circumferential direction, taking the radiation source 231 and the detector 232 with it. The angle sensing mechanism 50 detects whether the radiation source 231 or the detector 232 has reached a predetermined section, and controls the turntable 22 to reduce the rotation speed when the radiation source 231 or the detector 232 has reached the predetermined section.

[0085] The detection mechanism 23 detects defects in the cells 200 in a predetermined section.

[0086] After completing the scan, the position sensor 25 detects the position of the cell 200, and sends an avoidance signal to the rotation mechanism 20 if it detects that the cell 200 may collide with the rotation mechanism 20 during the output process.

[0087] After receiving the avoidance signal from the position sensor 25 , the rotation mechanism 20 controls the turntable 22 to rotate at a certain angle, taking the radiation source 231 and the detector 232 with it, to avoid the cell 200 .

[0088] However, when the radiation source 231 or the detector 232 rotates to a position between the first angle sensor 51 and the second angle sensor 52, or between the third angle sensor 53 and the fourth angle sensor 54, the rotation speed of the turntable 22 is reduced.

[0089] When the radiation source 231 or the detector 232 rotates to a position between the second angle sensor 52 and the third angle sensor 53, or between the fourth angle sensor 54 and the first angle sensor 51, the rotation speed of the turntable 22 is increased.

[0090] The transport mechanism 30 transports the cell 200 and removes it from the detection area.

[0091] The screening mechanism 40 transfers the cells 200 that fail to pass to a disposal area.

[0092] Example 2: The cell 200 is placed on the transport mechanism 30, and the cell 200 is positioned at a predetermined angle.

[0093] The turntable 22 rotates in a circumferential direction, carrying the radiation source 231 and the detector 232 with it. At this time, the transport mechanism 30 is installed extending parallel to the center of the rotation axis of the detection mechanism 23, and the transport mechanism 30 transports the cell 200.

[0094] The position sensor 25 detects the position of the cell 200, and when it detects that the cell 200 may collide with the rotation mechanism 20 when it enters the detection area, it transmits an avoidance signal to the rotation mechanism 20.

[0095] After the rotation mechanism 20 receives the avoidance signal from the position sensor 25 , the radiation source 231 and the detector 232 are switched from the detection position to the avoidance position to avoid the cell 200 .

[0096] The transport mechanism 30 transports the cell 200 to the detection area.

[0097] The position sensor 25 detects the position of the cell 200 , and sends a signal to the rotation mechanism 20 when it does not detect the cell 200 or when it detects that the position of the cell 200 is such that it cannot collide with the rotation mechanism 20 .

[0098] After the rotation mechanism 20 receives the signal from the position sensor 25, the radiation source 231 and the detector 232 are switched from the avoidance position to the detection position.

[0099] After receiving a signal from the position sensor 25, the rotation mechanism 20 controls the turntable 22 to rotate in a circumferential direction, taking the radiation source 231 and the detector 232 with it, and the angle sensing mechanism 50 detects whether the radiation source 231 or the detector 232 has reached a predetermined section, and controls the turntable 22 to reduce the rotation speed when the radiation source 231 or the detector 232 has reached the predetermined section.

[0100] The detection mechanism 23 detects defects in the cells 200 in a predetermined section.

[0101] After completing the scan, the position sensor 25 detects the position of the cell 200, and sends an avoidance signal to the rotation mechanism 20 if it detects that the cell 200 may collide with the rotation mechanism 20 during the output process.

[0102] After the rotation mechanism 20 receives the avoidance signal from the position sensor 25 , the radiation source 231 and the detector 232 are switched from the detection position to the avoidance position to avoid the cell 200 .

[0103] However, when the radiation source 231 or the detector 232 rotates to a position between the first angle sensor 51 and the second angle sensor 52, or between the third angle sensor 53 and the fourth angle sensor 54, the rotation speed of the turntable 22 is reduced.

[0104] When the radiation source 231 or the detector 232 rotates to a position between the second angle sensor 52 and the third angle sensor 53, or between the fourth angle sensor 54 and the first angle sensor 51, the rotation speed of the turntable 22 is increased.

[0105] The transport mechanism 30 transports the cell 200 and removes it from the detection area.

[0106] The screening mechanism 40 transfers the cells 200 that fail to pass to a disposal area.

[0107] In the description herein, reference to terms such as "embodiment," "exemplary," or the like means that the particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, general references to the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0108] Although embodiments of the present disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and alterations can be made to these embodiments without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is limited by the appended claims and their equivalents.

Claims

1. A detection device, comprising: A support mechanism (10); a rotation mechanism (20) provided on the support mechanism (10) and including a rotation holder (21) provided on the support mechanism (10) and a rotation disk (22) rotatable in a circumferential direction relative to the rotation holder (21); a conveying mechanism (30) that conveys the cells (200) through the turntable (22); a detection mechanism (23) provided on the turntable (22) for detecting the cells (200) on the transport mechanism (30), the detection mechanism (23) including a radiation source (231) and a detector (232) that rotate in a circumferential direction on the turntable (22); an angle sensing mechanism (50) connected to the rotation mechanism (20) for detecting whether the radiation source (231) or the detector (232) has reached a predetermined section, the angle sensing mechanism (50) controlling the turntable (22) to reduce the number of rotations when the radiation source (231) or the detector (232) has reached the predetermined section; A detection device characterized by:

2. The angle sensing mechanism (50) includes at least two angle sensors; The two angle sensors are provided at intervals along the circumferential direction of the rotating holder (21), detect the position of the radiation source (231) or the detector (232), and reduce the rotation speed of the turntable (22) when the radiation source (231) or the detector (232) has rotated to a position between the two angle sensors; The predetermined section is a section between two adjacent angle sensors.

2. The detection device according to claim 1.

3. The angle sensing mechanism (50) includes a first angle sensor (51), a second angle sensor (52), a third angle sensor (53), and a fourth angle sensor (54) that are provided in this order at intervals along the circumferential direction of the rotary holder (21), The first angle sensor (51), the second angle sensor (52), the third angle sensor (53), and the fourth angle sensor (54) detect the position of the radiation source (231) or the detector (232), and when the radiation source (231) or the detector (232) has rotated to a position between the first angle sensor (51) and the second angle sensor (52) and between the third angle sensor (53) and the fourth angle sensor (54), the rotating disk (22) is instructed to reduce the rotation speed, while when the radiation source (231) or the detector (232) has rotated to a position between the second angle sensor (52) and the third angle sensor (53) and between the fourth angle sensor (54) and the first angle sensor (51), the rotating disk (22) is instructed to increase the rotation speed; The predetermined sections are a section between the first angle sensor (51) and the second angle sensor (52) and a space between the third angle sensor (53) and the fourth angle sensor (54).

3. The detection device according to claim 2.

4. Two radial movement mechanisms (221) are provided on the rotating disk (22), and the two radial movement mechanisms (221) are provided relative to each other. The radial movement mechanism (221) moves toward and away from the center of the turntable (22) along the radial direction of the turntable (22).

2. The detection device according to claim 1.

5. the radiation source (231) and the detector (232) are mounted on the radial movement mechanism (221) so that the radiation source (231) and the detector (232) can be switched between a detection position and an avoidance position; 5. The detection device according to claim 4.

6. The rotation mechanism (20) further includes a position sensor (25) capable of detecting the position of the cell (200) on the transport mechanism (30).

2. The detection device according to claim 1.

7. and a screening mechanism (40) that transfers the cell (200) to a disposal area if the detection mechanism (23) detects that the cell (200) is unacceptable.

2. The detection device according to claim 1.

8. 1. A detection method for cell detection, comprising: The detection device according to any one of claims 1 to 7, The detection method includes: placing the cell (200) on a transport mechanism (30); A transport mechanism (30) transports the cell (200) to a detection area; an angle sensing mechanism (50) detecting whether the radiation source (231) or the detector (232) has reached a predetermined section, and controlling the turntable (22) to reduce the number of rotations when the radiation source (231) or the detector (232) has reached the predetermined section; a detection mechanism (23) for detecting defects in the cell (200) in the predetermined section; A detection method characterized by:

9. When placing the cell (200) on the transport mechanism (30), the cell (200) is positioned at a predetermined angle, wherein the predetermined angle is 15°-75°.

9. The detection method according to claim 8.

10. Before the detection mechanism (23) detects the cell (200), a position sensor (25) detecting the position of the cell (200); When the position of the cell (200) does not interfere with the detection mechanism (23), the transport mechanism (30) transports the cell (200) to the detection area; and when the position of the cell (200) interferes with the detection mechanism (23), the detection mechanism (23) performs an avoidance action. The detection method according to claim 9 .

11. Before the detection mechanism (23) detects the cell (200), The rotating disk (22) rotates at a certain angle, carrying the radiation source (231) and the detector (232), to move away from the cell (200); The transport mechanism (30) transports the cell (200) to a detection area; The rotating disk (22) rotates in a circumferential direction, carrying the radiation source (231) and the detector (232), to detect the cell (200); The transport mechanism (30) transports the cell (200) out of the detection area. The detection method according to claim 10.

12. Before the detection mechanism (23) detects the cell (200), The rotating disk (22) rotates in a circumferential direction, carrying the radiation source (231) and the detector (232); The radiation source (231) and the detector (232) are switched from the detection position to the avoidance position; The transport mechanism (30) transports the cell (200) to a detection area; the radiation source (231) and the detector (232) are switched from the avoidance position to the detection position; The rotating disk (22) rotates in a circumferential direction, carrying the radiation source (231) and the detector (232), to detect the cell (200); The transport mechanism (30) transports the cell (200) out of the detection area. The detection method according to claim 10.

13. When the rotating disk (22) rotates in a circumferential direction, carrying the radiation source (231) and the detector (232), and detects the cell (200), When the radiation source (231) or the detector (232) rotates to a position between the first angle sensor (51) and the second angle sensor (52) or between the third angle sensor (53) and the fourth angle sensor (54), the rotation speed of the turntable (22) is reduced; and increasing the rotation speed of the turntable (22) when the radiation source (231) or the detector (232) rotates between the second angle sensor (52) and the third angle sensor (53) and between the fourth angle sensor (54) and the first angle sensor (51).

13. The detection method according to claim 11 or 12.

14. The screening mechanism (40) transfers the rejected cells (200) to a disposal area.

13. The detection method according to claim 11 or 12.

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