Detection apparatus and detection method for battery cell detection

Abstract

Provided are a detection apparatus and a detection method for battery cell detection. The detection apparatus comprises: a supporting mechanism, a rotating mechanism, a conveying mechanism, and a detection mechanism. The rotating mechanism is arranged on the supporting mechanism, the rotating mechanism comprises a rotating support and a rotating disc, the rotating support is arranged on the supporting mechanism, and the rotating disc is capable of rotating circumferentially relative to the rotating support; the conveying mechanism penetrates through the rotating disc, and the conveying mechanism is adapted to convey a battery cell; the detection mechanism is arranged on the rotating disc, the detection mechanism comprises a ray source and a detector, the ray source and the detector are adapted to detect the battery cell on the conveying mechanism, and the ray source and the detector are adapted to rotate circumferentially on the rotating disc.

Description

Detection device and detection method for battery cell detection

[0001] This application claims priority to Chinese patent application No. 202310695780.5 filed on June 12, 2023, the contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of nondestructive testing, and in particular to a testing device and a testing method for battery cell testing. Background Art

[0003] As demand for lithium batteries continues to expand, the market's requirements for lithium battery quality are becoming increasingly stringent, and the consistency requirements for lithium batteries, especially power batteries, are becoming increasingly stringent. In some related technologies, traditional industrial CT solutions use detectors and optical machines to scan battery cells in a static state. This requires high positional accuracy and angular deformation of the battery cells to be inspected. During the inspection process, objective factors such as cell position and angular deformation can affect the quality of inspection, making it difficult to improve and resulting in a high rate of false positives.

[0004] Summary of the Invention

[0005] According to the detection device of the first aspect of the present disclosure, the detection device includes: a support mechanism, a rotating mechanism, a transmission mechanism, a detection mechanism, and an angle sensing mechanism. The rotating mechanism is arranged on the support mechanism, and the rotating mechanism includes: a rotating bracket and a rotating disk, the rotating bracket is arranged on the support mechanism, and the rotating disk can rotate circumferentially relative to the rotating bracket; the transmission mechanism passes through the rotating disk, and the transmission mechanism is suitable for transmitting battery cells; the detection mechanism is arranged on the rotating disk, and the detection mechanism includes: a radiation source and a detector, the radiation source and the detector are suitable for detecting the battery cells on the transmission mechanism, and the radiation source and the detector are suitable for circumferential rotation on the rotating disk; the angle sensing mechanism is connected to the rotation mechanism signal, and the angle sensing mechanism is used to detect whether the radiation source or the detector has reached a preset interval, and when the radiation source or the detector reaches the preset interval, the rotating disk is controlled to reduce the rotation speed.

[0006] In some embodiments, the angle sensor includes at least two angle sensors, which are arranged at intervals along the circumference of the rotating bracket and are used to detect the position of the radiation source or the detector so as to reduce the rotation speed of the rotating disk when the radiation source or the detector rotates between the two angle sensors.

[0007] 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, which are sequentially spaced along the circumference of the rotating bracket. The first angle sensor, the second angle sensor, the third angle sensor, and the fourth angle sensor are used to detect the position of the radiation source or the detector, so as to reduce the rotation speed of the rotating disk when the radiation source or the detector rotates between the first angle sensor and the second angle sensor, or between the third angle sensor and the fourth angle sensor, and to increase the rotation speed of the rotating disk when the radiation source or the detector rotates between the second angle sensor and the third angle sensor, or between the fourth angle sensor and the first angle sensor.

[0008] In some embodiments, the rotating disk is provided with two radial movement mechanisms arranged opposite to each other, and the radial movement mechanisms can move closer to or away from the center of the rotating disk along the radial direction of the rotating disk.

[0009] Furthermore, the ray source and the detector are arranged on the radial movement mechanism, so that the ray source and the detector can switch between the detection position and the avoidance position.

[0010] In some embodiments, the rotating mechanism further includes: a position sensor, which can detect the position of the battery cell on the transmission mechanism.

[0011] In some embodiments, the detection mechanism further includes: a screening mechanism, wherein the screening mechanism is adapted to transfer the battery cell to a waste area when the detection mechanism detects that the battery cell is unqualified.

[0012] The detection method for battery cell detection according to the second aspect embodiment of the present disclosure is suitable for detecting battery cells through a detection device, and the detection method includes: placing the battery cells on a conveying mechanism; the conveying mechanism conveys the battery cells to a detection area; an angle sensing mechanism detects whether the radiation source or the detector reaches a preset interval, and when the radiation source or the detector reaches the preset interval, controls the rotating disk to reduce the rotation speed; and the detection mechanism performs defect detection on the battery cells.

[0013] In some embodiments, when placing the battery cell on the conveying mechanism, the battery cell is placed at a preset angle, wherein the preset angle is 15°-75°.

[0014] In some embodiments, before the detection mechanism detects the battery cell, it also includes: the position sensor detects the position of the battery cell; if the position of the battery cell does not interfere with the detection mechanism, the transmission mechanism transmits the battery cell to the detection area; if the position of the battery cell interferes with the detection mechanism, the detection mechanism avoids it.

[0015] Furthermore, before the detection mechanism detects the battery cell, it also includes: the rotating disk drives the radiation source and the detector to rotate a certain angle to avoid the battery cell; the conveying mechanism conveys the battery cell to the detection area; the rotating disk drives the radiation source and the detector to rotate circumferentially to detect the battery cell; the conveying mechanism conveys the battery cell out of the detection area.

[0016] In some embodiments, before the detection mechanism detects the battery cell, it also includes: a rotating disk drives the radiation source and the detector to rotate circumferentially; the radiation source and the detector switch from the detection position to the avoidance position; the conveying mechanism conveys the battery cell to the detection area; the radiation source and the detector switch from the avoidance position to the detection position; the rotating disk drives the radiation source and the detector to rotate circumferentially to detect the battery cell; the conveying mechanism conveys the battery cell out of the detection area.

[0017] In some embodiments, when the rotating disk drives the radiation source and the detector to rotate circumferentially to detect the battery cell, it includes: when the radiation source or the detector rotates between the first angle sensor and the second angle sensor, and between the third angle sensor and the fourth angle sensor, the rotating disk is reduced in speed; when the radiation source or the detector rotates between the second angle sensor and the third angle sensor, and between the fourth angle sensor and the first angle sensor, the rotating disk is increased in speed.

[0018] Optionally, the screening mechanism transfers the unqualified battery cells to a waste area.

[0019] Additional aspects and advantages of the present disclosure will be given in part in the description that follows and, in part, will be obvious from the description that follows, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] FIG1 is a front view of a detection device according to an embodiment of the first aspect of the present disclosure.

[0022] FIG2 is a top cross-sectional view of the detection device according to the embodiment of the first aspect of the present disclosure.

[0023] Figure numerals: detection device 100, supporting mechanism 10, rotating mechanism 20, rotating bracket 21, rotating disk 22, radial moving mechanism 221, detection mechanism 23, radiation source 231, detector 232, rotating connector 24, position sensor 25, conveying mechanism 30, positioning module 31, first positioning part 311, second positioning part 312, screening mechanism 40, angle sensing mechanism 50, first angle sensor 51, second angle sensor 52, third angle sensor 53, fourth angle sensor 54, battery cell 200. DETAILED DESCRIPTION

[0024] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present disclosure and are not to be construed as limiting the present disclosure.

[0025] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present disclosure, unless otherwise specified, "multiple" means two or more.

[0026] In the description of this disclosure, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0027] The present disclosure provides a detection device that can improve detection quality and detection efficiency while reducing battery cell placement requirements.

[0028] According to the detection device of the first embodiment of the present disclosure, a rotating mechanism is provided on the supporting mechanism, and a detection mechanism is provided on the rotating mechanism. The detection mechanism can rotate circumferentially on the rotating mechanism, the transmission mechanism passes through the rotating disk, and the battery cells can pass through the rotating disk on the transmission mechanism, thereby realizing continuous detection of the battery cells, and the angle sensing mechanism can detect the rotation angle of the detection mechanism. When the detection device is required to detect the battery cells, the transmission mechanism first transmits the battery cells to the detection area, and the radiation source and detector of the detection mechanism rotate circumferentially on the rotating disk, and then detect the battery cells located in the detection area. It should be noted that the detection area is the area between the line connecting the radiation source and the detector, and the detection mechanism can detect the battery cells in this area. The detection mechanism performs multi-directional inspection of the battery cells by rotating circumferentially on the rotating disk, thereby detecting the alignment and welding of the electrode pieces of each battery cell. There are no requirements for the placement and angle of the battery cells on the conveyor mechanism. When the radiation source or detector rotates to a preset range, the angle sensing mechanism sends a signal to the rotating mechanism to reduce the rotation speed of the rotating disk. At this time, the detection frequency of the detection mechanism remains unchanged. The lower rotation speed allows for more precise inspection of the battery cells. As a result, the detection device can improve detection quality and efficiency while reducing the requirements for battery cell placement.

[0029] The present disclosure also aims to provide a detection method for telecommunication detection, wherein the detection method uses the above-mentioned detection device to detect battery cells.

[0030] The following describes a detection device 100 and a detection method for detecting a battery cell 200 according to an embodiment of the present disclosure with reference to FIG1-FIG2 .

[0031] As shown in FIG1-FIG2 , 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 transmission mechanism 30 , a detection mechanism 23 and an angle sensing mechanism 50 .

[0032] Among them, the rotating mechanism 20 is arranged on the supporting mechanism 10, and the rotating mechanism 20 includes: a rotating bracket 21 and a rotating disk 22, the rotating bracket 21 is arranged on the supporting mechanism 10, and the rotating disk 22 can rotate circumferentially relative to the rotating bracket 21; the conveying mechanism 30 passes through the rotating disk 22, and the conveying mechanism 30 is suitable for conveying the battery cells 200; the detection mechanism 23 is arranged on the rotating disk 22, and the detection mechanism 23 includes: a ray source 231 and a detector 232, the ray source 231 and the detector 232 are suitable for detecting the battery cells 200 on the conveying mechanism 30, and the ray source 231 and the detector 232 are suitable for circumferential rotation on the rotating disk 22, the angle sensing mechanism 50 is connected to the rotating mechanism 20 signal, and the angle sensing mechanism 50 is used to detect whether the ray source 231 or the detector 232 reaches the preset interval, and when the ray source 231 or the detector 232 reaches the preset interval, the rotating disk 22 is controlled to reduce the speed.

[0033] Specifically, the rotating mechanism 20 is disposed on the supporting mechanism 10, and a detection mechanism 23 is disposed on the rotating mechanism 20. The detection mechanism 23 can rotate circumferentially on the rotating mechanism 20. The conveying mechanism 30 passes through the rotating disk 22, and the battery cells 200 can pass through the rotating disk 22 on the conveying mechanism 30, thereby achieving continuous detection of the battery cells 200. The angle sensing mechanism can detect the rotation angle of the detection mechanism. When the detection device 100 is required to detect the battery cells 200, the conveying mechanism 30 first conveys the battery cells 200 to the detection area. The radiation source 231 and the detector 232 of the detection mechanism 23 rotate circumferentially on the rotating disk 22, and then detect the battery cells 200 located in the detection area. It should be noted that the detection area is the area between the line connecting the radiation source 231 and the detector 232, and the detection mechanism 23 can detect the battery cells 200 in this area. The detection mechanism 23 can perform multi-directional detection on the battery cells 200 by rotating circumferentially on the rotating disk 22, thereby detecting the electrode alignment and welding condition of each battery cell 200, and there is no requirement for the placement position and placement angle of the battery cells 200 on the conveying mechanism 30. When the radiation source 231 or the detector 232 rotates within a preset interval, the angle sensing mechanism 50 will send a signal to the rotating mechanism 20 to reduce the rotation speed of the rotating disk 22. At this time, the detection frequency of the detection mechanism 23 remains unchanged. Through a lower rotation speed, the detection of the battery cells can be more precise.

[0034] It can be understood that the preset interval can be set by the angle sensing mechanism 50, and the preset interval can be any area on the circumference of the rotation of the rotating disk 22. For example, when the battery cell 200 is placed on the conveying mechanism 30 and the conveying mechanism 30 conveys the battery cell 200 to the detection area, the preset interval can be a partial area on the circumference of the rotating disk 22 close to the side of the battery cell 200, or it can be a partial area on the circumference of the rotating disk 22 close to the top or bottom surface of the battery cell 200, and can be set according to actual needs.

[0035] When the preset interval is a partial area of ​​the rotating disk 22 close to the side of the battery cell 200 in the circumferential direction, the rotating disk 22 will reduce the rotation speed when driving the radiation source 231 or the detector 232 to move to this area. At this time, the detection mechanism 23 can increase the detection time in the preset area, thereby increasing the detection amount of the side of the battery cell 200 and improving the detection accuracy.

[0036] The rotating mechanism 20 is mounted on the supporting mechanism 10 via a rotating bracket 21. The rotating bracket 21 supports the rotating disk 22, which can rotate circumferentially on the rotating bracket 21. The radiation source 231 and the detector 232 are fixed to the rotating disk 22 and can rotate synchronously with the rotating disk 22. When inspecting the battery cells 200, the radiation source 231 and the detector 232 can rotate circumferentially around the battery cells 200 located in the inspection area to scan the battery cells 200 in multiple directions. By driving the radiation source 231 and the detector 232 to rotate circumferentially by the rotating disk 22, the battery cells 200 located in the inspection area can be scanned in multiple directions, thereby improving the inspection quality of the battery cells 200.

[0037] According to the detection device 100 of the embodiment of the first aspect of the present disclosure, the detection device 100 can improve the detection quality and detection efficiency while reducing the placement requirements of the battery cells 200.

[0038] Optionally, the detection device 100 further includes a detection control system, which includes:

[0039] If the battery cell 200 collides with the rotating mechanism when entering the detection area, the rotating mechanism 20 controls the rotating disk to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;

[0040] If the battery cell 200 collides with the rotating mechanism when entering the detection area, the radiation source 231 and the detector 232 switch from the detection position to the avoidance position to avoid the battery cell 200;

[0041] The angle sensing mechanism 50 detects whether the ray source 231 or the detector 232 reaches a preset interval, and controls the rotating disk 22 to reduce its rotation speed when the ray source 231 or the detector 232 reaches the preset interval.

[0042] Furthermore, the rotating mechanism 20 further includes a rotating connector 24 , which is disposed between the rotating bracket 21 and the rotating disk 22 to reduce resistance between the rotating bracket 21 and the rotating disk 22 so that the rotating disk 22 can rotate freely.

[0043] It should be noted that there is no specific limitation on the structure of the rotating connector 24 . The rotating connector 24 may be a combination of a circular rail and a circular slider, or a bearing disposed between the rotating bracket 21 and the rotating disk 22 .

[0044] When the rotating connecting member 24 is a circular slide rail and a circular slider, the circular slide rail can be set on one of the rotating bracket 21 and the rotating disk 22, and the circular slider can be set on the other of the rotating bracket 21 and the rotating disk 22. The circular slide rail and the circular slider engage with each other, allowing the rotating disk 22 to rotate freely on the rotating bracket 21.

[0045] Optionally, the rotating mechanism 20 further comprises a drive motor, a drive gear, and a driven gear portion. The drive motor is fixed to the rotating bracket 21, the drive gear is disposed on the motor shaft of the drive motor, and the driven gear portion is disposed on the outer side of the rotating disk 22, with the drive gear and the driven gear portion meshing. Thus, the rotating disk 22 can rotate circumferentially under the drive of the drive motor, thereby improving the detection efficiency of the battery cells 200.

[0046] It should be noted that the driven gear portion can be a full circle of external teeth arranged on the outside of the rotating disk 22, or it can be a partial circle of external teeth arranged on the outside of the rotating disk 22. When the driven gear portion is a full circle of external teeth arranged on the outside of the rotating disk 22, the rotating disk 22 can continuously rotate in the circumferential direction under the drive of the drive motor. When the driven gear portion is a partial circle of external teeth arranged on the outside of the rotating disk 22, the rotating disk 22 can reciprocate at a certain angle under the drive of the drive motor. The choice can be made according to actual needs.

[0047] In some embodiments, the angle sensing mechanism 50 includes at least two angle sensors, which are arranged at circumferential intervals along the rotating bracket 21 and are used to detect the position of the ray source 231 or the detector 232, so as to reduce the rotation speed of the rotating disk 22 when the ray source 231 or the detector 232 rotates between the two angle sensors, wherein the preset interval is the interval between two adjacent angle sensors.

[0048] 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 which are sequentially arranged along the circumference of the rotating bracket 21. The first angle sensor 51, the second angle sensor 52, the third angle sensor 53 and the fourth angle sensor 54 are used to detect the position of the ray source 231 or the detector 232, so as to reduce the rotation speed of the rotating disk 22 when the ray source 231 or the detector 232 rotates 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, and to increase the rotation speed of the rotating disk 22 when the ray 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, wherein the preset interval is the interval between the first angle sensor (51) and the second angle sensor (52), and the interval between the third angle sensor (53) and the fourth angle sensor (54).

[0049] Specifically, by providing multiple angle sensors, the rotating disk 22 can be made to rotate at variable speeds while driving the detection mechanism 23 to rotate. The detection mechanism 23 can reduce its rotational 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 achieving more accurate detection, while increasing the deceleration 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 battery cell 200 is inspected by the detection device 100, the conveying mechanism 30 first conveys the battery cell 200 to the inspection area. Due to the structural characteristics of the battery cell 200 itself, there is a lot of detection information on its side. In the related art, the detection device is generally used to rotate at a constant speed to inspect the battery cell. However, when the radiation source 231 or the detector 232 moves to the side of the battery cell, due to the high speed, less information is collected, resulting in poor battery cell inspection quality. By setting up an angle sensing mechanism 50, when the radiation source 231 or the detector 232 moves to the side of the battery cell, the rotating disk 22 is controlled to reduce the rotation speed, which can greatly increase the amount of information collected and thus improve the detection accuracy. On the top or bottom surface of the battery cell where less detection information is available, the rotation speed of the detection mechanism 23 can be increased to ensure detection efficiency.

[0050] Therefore, by providing the angle sensor mechanism 50 , the detection accuracy and detection efficiency of the detection device can be further improved.

[0051] Optionally, the angle sensing mechanism can also be an encoder, which is coaxially arranged with the drive motor. The encoder is used to detect whether the ray source or detector reaches a preset interval, and controls the rotating disk to reduce the speed when the ray source or detector reaches the preset interval.

[0052] In some embodiments, the rotating disk 22 is provided with two radially movable mechanisms 221 disposed opposite each other, which can move closer to or farther from the center of the rotating disk 22 along the radial direction of the rotating disk 22. The radiation source 231 and the detector 232 are disposed on the radially movable mechanisms 221 so as to switch between a detection position and an avoidance position.

[0053] Specifically, through the radial moving mechanism 221, the ray source 231 and the detector 232 can be moved respectively in the diameter direction of the rotating disk 22 to approach or move away from each other. When the ray source 231 and the detector 232 are close to the center of the rotating disk 22, they can be moved to the detection position. At this time, the distance between the ray source 231 and the detector 232 is relatively close, and the detection accuracy is higher. When the ray source 231 and the detector 232 are far away from the center of the rotating disk 22, they can be moved to the avoidance position. At this time, the distance between the ray source 231 and the detector 232 is relatively far. When the conveying mechanism 30 conveys the battery cell 200 to the detection area, the corners of the battery cell 200 may interfere with the detection mechanism 23. By switching the ray source 231 and the detector 232 to the avoidance position, the battery cell 200 can be avoided to prevent damage to the battery cell 200 and the detection mechanism 23.

[0054] Therefore, by switching the ray source 231 and the detector 232 between the detection position and the avoidance position, the safety of the detection can be improved while ensuring the detection accuracy.

[0055] Furthermore, the conveyor mechanism 30 includes a plurality of positioning modules 31 spaced apart from each other, which are adapted to position the battery cells 200. When the battery cells 200 are placed on the conveyor mechanism 30, the positioning modules 31 can be used to position the battery cells 200 so that the measured corners of each battery cell 200 are in the appropriate position. When the conveyor mechanism 30 moves the battery cells 200 to the inspection area, the inspected corners of each battery cell 200 are ensured to be in the same position, thereby improving inspection accuracy.

[0056] Optionally, the positioning module 31 includes a first positioning portion 311 and a second positioning portion 312, the first positioning portion 311 and the second positioning portion 312 are perpendicular to each other, and the first positioning portion 311 and the second positioning portion 312 are both fixed on the conveying mechanism 30, and a positioning space is formed inside the angle formed by the first positioning portion 311 and the second positioning portion 312, and the corners of the battery cell 200 to be tested can be placed in the positioning space, and the adjacent two sides of the battery cell 200 are respectively stopped against the first positioning portion 311 and the second positioning portion 312.

[0057] Specifically, when the battery cell 200 needs to be inspected, the battery cell 200 is placed on the conveying mechanism 30, and one corner of the battery cell 200 is placed in the positioning space, and the two adjacent sides of the corner are respectively stopped against the first positioning part 311 and the second positioning part 312. At this time, the battery cell 200 can be fixed on the conveying mechanism 30. By placing the battery cells 200 in sequence in this way, the regular placement of the battery cells 200 can be ensured.

[0058] Therefore, when the detection mechanism 23 is used to detect the corners of the battery cell 200 later, the detection can be performed without adjusting the position of the battery cell 200, thereby improving the detection efficiency while ensuring the detection accuracy.

[0059] It should be noted that there is no specific restriction on the connection method between the positioning module 31 and the transmission mechanism 30. For example, the positioning module 31 can be connected to the transmission mechanism 30 by bonding, screwing or snapping, which can be selected according to actual needs.

[0060] Further optionally, the first positioning portion 311 and the second positioning portion 312 can be grooves or protrusions formed on the conveying mechanism 30. When the battery cell 200 is placed on the conveying mechanism 30, the corners of the battery cell 200 can be placed into the grooves or protrusions, so that the position of the battery cell 200 can be fixed.

[0061] Optionally, when the positioning module 31 is fixed to the conveying mechanism 30 , it has a preset angle, wherein the preset angle is 0°-75°.

[0062] Exemplarily, the preset angle can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°, and can be set according to actual needs.

[0063] It should be noted that there is no specific restriction on the number and setting position of the positioning modules 31 on the conveying mechanism 30. For example, the positioning modules 31 can be set on the center line of the conveying mechanism 30 and set at intervals. The positioning modules 31 can also be set side by side on both sides of the center line of the conveying mechanism 30. The selection can be made according to actual needs.

[0064] It is understandable that, depending on the different configurations of the positioning module 31 , the placement of the battery cells 200 on the conveying mechanism 30 will also be different.

[0065] When the positioning module 31 is set on the center line of the conveying mechanism 30 and is arranged at equal intervals, in order to ensure the detection quality of the battery cells 200 by the detection mechanism 23, the positioning module 31 can be set to a preset angle so that the detection mechanism 23 can detect the corners of the battery cells 200. The battery cells 200 can be placed in the positioning space by placing the corners and respectively abutting the adjacent two sides of the corners against the first positioning portion 311 and the second positioning portion 312. At this time, multiple battery cells 200 can be placed at equal intervals on the conveying mechanism 30. As shown in Figure 2, if the preset angle of the positioning module 31 is set to 45° for example, the battery cells 200 are also tilted at 45° on the conveying mechanism 30. When the conveying mechanism 30 conveys the battery cells 200 to the detection area, the detection mechanism 23 can perform circumferential detection on the corners of the battery cells 200, thereby improving the detection accuracy.

[0066] When the positioning module 31 is arranged side by side on both sides of the center line of the conveying mechanism 30, the positioning module 31 can set the preset angle to 0° and place it diagonally, so that the two battery cells 200 can be fixed at the same time. When a rotating table is provided in the detection device 100, the rotating mechanism 20 can be set to a certain angle through the rotating table so that the detection mechanism 23 forms a certain angle with the center of the conveying mechanism 30. At this time, two battery cells 200 are arranged on the conveying mechanism 30. The two battery cells 200 are arranged diagonally on both sides of the center line of the conveying mechanism 30 for connection at the end under the constraint of the positioning module 31. The detection mechanism 23 can detect the corners of the two battery cells 200 at the same time, thereby improving the detection efficiency.

[0067] In some embodiments, the rotating mechanism 20 further includes a position sensor 25, which can detect the position of the battery cell 200 on the conveying mechanism 30. The position sensor 25 can detect the position of the battery cell 200 on the conveying mechanism 30. The position sensor 25 is connected to the rotating mechanism 20 signal. Before the conveying mechanism 30 conveys the battery cell 200 into the detection area, the position sensor 25 performs detection. When the position sensor 25 detects that the position of the battery cell 200 is about to interfere with the detection mechanism 23, it sends an avoidance signal to the rotating mechanism 20, and the rotating disk 22 drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200. When the position sensor 25 detects that the position of the battery cell 200 will not interfere with the detection mechanism 23 or the battery cell 200 is not detected, the rotating disk 22 drives the radiation source 231 and the detector 232 to continue circumferential rotation.

[0068] Therefore, the battery cell 200 can be prevented from colliding with the detection mechanism 23 during the detection of the battery cell 200, thereby improving the detection safety.

[0069] It should be noted that there is no specific limitation on the type of the position sensor 25. For example, the position sensor 25 may be an optical position sensor 25, an ultrasonic position sensor 25, a light curtain sensor, or a camera.

[0070] When the position sensor 25 is an optical position sensor 25, a light beam is emitted through the transmitter. If the battery cell 200 located on the transmission mechanism 30 interferes with the rotating mechanism 20, the light beam emitted by the transmitter will be reflected back to the optical position sensor 25 when it touches the battery cell 200. At this time, the sensor can calculate the distance between the rotating mechanism 20 and the battery cell 200. When the distance between the two is less than the set threshold, the optical position sensor 25 sends an avoidance signal to the rotating mechanism 20, and the rotating disk 22 drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200. When the optical position sensor 25 does not receive the reflected signal, or after receiving the signal, through calculation, the distance between the battery cell 200 and the rotating mechanism 20 is greater than or equal to the set threshold, the rotating disk 22 drives the radiation source 231 and the detector 232 to continue circumferential rotation.

[0071] When the position sensor 25 is a light curtain sensor, the light curtain sensor can be set upstream of the rotating mechanism 20 and near the conveying mechanism 30. When the light curtain sensor detects that the light curtain is blocked, the light curtain sensor sends an avoidance signal to the rotating mechanism 20, and the rotation drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200. When the light curtain sensor detects that the light curtain is not blocked, the rotating disk 22 drives the radiation source 231 and the detector 232 to continue circumferential rotation.

[0072] When the position sensor 25 is a camera, the camera can be set on the rotating bracket 21, and the camera can photograph the battery cell 200 located on the conveying mechanism 30. By identifying the position of the battery cell 200 in the image, it can be determined when the battery cell 200 interferes with the rotating mechanism 20. When it is calculated from the image taken by the camera that the battery cell 200 will collide with the rotating mechanism 20, the camera sends an avoidance signal to the rotating mechanism 20, and the rotating disk 22 drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200. When the battery cell 200 does not appear in the image taken by the camera or it is calculated from the image taken by the camera that the battery cell 200 will not collide with the rotating mechanism 20, the camera sends a signal to the rotating disk 22 mechanism, and the rotating disk 22 drives the radiation source 231 and the detector 232 to continue circumferential rotation.

[0073] It should be noted that there is no specific restriction on the position of the position sensor 25 on the detection device 100. As long as the position sensor 25 can detect whether the battery cell 200 collides with the rotating mechanism 20, it can be set as needed.

[0074] In some embodiments, the detection mechanism 23 further includes: a screening mechanism 40 , which is suitable for transferring the battery cell 200 to a waste area when the detection mechanism 23 detects that the battery cell 200 is unqualified.

[0075] Specifically, the screening mechanism 40 is adapted to transfer unqualified cells 200 to a scrap area when the inspection mechanism 23 detects that the cells 200 are unqualified. After the inspection mechanism 23 completes the inspection of the cells 200, if the internal defect status of the cells 200 does not meet the requirements, the screening mechanism 40 can screen out the unqualified cells 200 on the conveyor mechanism 30 and transfer them to the scrap area, allowing qualified cells 200 to proceed to the next process step. This improves the inspection efficiency of the inspection device 100.

[0076] It can be understood that the detection system corresponding to the detection device 100 in the present disclosure can number the battery cells 200 detected by the detection device 100 one by one. When the screening mechanism 40 transfers the unqualified battery cells 200 to the waste area, the detection system will also eliminate the numbers and images corresponding to the unqualified battery cells 200.

[0077] That is, the battery cell 200 is first inspected by the inspection mechanism 23 while being transported by the transport mechanism 30. If the inspection mechanism 23 detects that the battery cell 200 is unqualified, the screening mechanism 40 transfers the battery cell 200 to the waste area. At the same time, within the inspection system, the numbers and images corresponding to the unqualified battery cells 200 are eliminated. When the battery cell 200 passes the inspection of the inspection mechanism 23 and is judged to be qualified, the qualified battery cell 200 can enter the next process. This can reduce the system resource usage, thereby making the inspection device 100 have higher inspection efficiency.

[0078] According to the detection method for detecting the battery cell 200 according to the embodiment of the second aspect of the present disclosure, the detection method is applicable to the detection device 100 of any one of the above embodiments, and the detection method includes: placing the battery cell 200 on the conveying mechanism 30; the conveying mechanism 30 conveys the battery cell 200; and the detection mechanism 23 detects the battery cell 200.

[0079] In some embodiments, when the battery cell 200 is placed on the conveying mechanism 30 , the battery cell 200 is placed at a preset angle, wherein the preset angle is 15°-75°.

[0080] Specifically, by placing the battery cell 200 at a preset angle, the center line of the battery cell 200 can have a certain angle with the extension direction of the conveying mechanism 30, that is, the battery cell 200 is placed on the conveying mechanism 30 at an angle, so that when the conveying mechanism 30 moves the battery cell 200 to the detection area, the corners of the battery cell 200 can be within the detection area.

[0081] In this way, the detection efficiency of the detection device 100 can be improved while improving the detection effect.

[0082] Exemplarily, the preset angle can be 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°, and can be set according to actual needs.

[0083] As shown in FIG2 , a method for detecting a battery cell 200 is described below according to a specific embodiment of the present disclosure.

[0084] Example 1:

[0085] Place the battery cell 200 on the conveying mechanism 30 and position the battery cell 200 at a preset angle;

[0086] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the conveying mechanism 30 is extended parallel to the rotation axis of the detection mechanism 23, and the conveying mechanism 30 conveys the battery cells 200.

[0087] The position sensor 25 detects the position of the battery cell 200 and sends an avoidance signal to the rotating mechanism 20 if it detects that the battery cell 200 will collide with the rotating mechanism 20 when entering the detection area;

[0088] The rotating mechanism 20 receives the avoidance signal from the position sensor 25 and controls the rotating disk to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;

[0089] The conveying mechanism 30 conveys the battery cell 200 to the inspection area;

[0090] The position sensor 25 detects the position of the battery cell 200 and sends a signal to the rotating mechanism 20 if no battery cell 200 is detected or if the position of the battery cell 200 is detected to be unlikely to collide with the rotating mechanism 20 ;

[0091] After receiving the signal from the position sensor 25, the rotating mechanism 20 controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate in a circumferential direction. The angle sensing mechanism 50 detects whether the radiation source 231 or the detector 232 has reached a preset range. When the radiation source 231 or the detector 232 reaches the preset range, the rotating disk 22 is controlled to reduce its rotation speed.

[0092] The detection mechanism 23 performs defect detection on the battery cell 200 in a preset interval;

[0093] After the scan is completed, the position sensor 25 detects the position of the battery cell 200. If it is detected that the battery cell 200 will collide with the rotating mechanism 20 during the output process, an avoidance signal is sent to the rotating mechanism 20.

[0094] The rotating mechanism 20 receives the avoidance signal from the position sensor 25 and controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;

[0095] When the ray 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 rotation speed of the rotating disk 22 is reduced;

[0096] When the ray 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 rotating disk 22 increases its rotation speed;

[0097] The conveying mechanism 30 conveys the battery cell 200 out of the detection area;

[0098] The screening mechanism 40 transfers the unqualified battery cells 200 to a waste area.

[0099] Example 2:

[0100] Place the battery cell 200 on the conveying mechanism 30 and position the battery cell 200 at a preset angle;

[0101] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the conveying mechanism 30 is extended parallel to the rotation axis of the detection mechanism 23, and the conveying mechanism 30 conveys the battery cells 200.

[0102] The position sensor 25 detects the position of the battery cell 200 and sends an avoidance signal to the rotating mechanism 20 if it detects that the battery cell 200 will collide with the rotating mechanism 20 when entering the detection area;

[0103] The rotating mechanism 20 receives the avoidance signal from the position sensor 25 , and the ray source 231 and the detector 232 switch from the detection position to the avoidance position to avoid the battery cell 200 ;

[0104] The conveying mechanism 30 conveys the battery cell 200 to the inspection area;

[0105] The position sensor 25 detects the position of the battery cell 200 and sends a signal to the rotating mechanism 20 if no battery cell 200 is detected or if the position of the battery cell 200 is detected to be unlikely to collide with the rotating mechanism 20 ;

[0106] After the rotating mechanism 20 receives the signal from the position sensor 25, the ray source 231 and the detector 232 switch from the avoidance position to the detection position;

[0107] After receiving the signal from the position sensor 25, the rotating mechanism 20 controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate in a circumferential direction. The angle sensing mechanism 50 detects whether the radiation source 231 or the detector 232 has reached a preset range. When the radiation source 231 or the detector 232 reaches the preset range, the rotating disk 22 is controlled to reduce its rotation speed.

[0108] The detection mechanism 23 performs defect detection on the battery cell 200 in a preset interval;

[0109] After the scan is completed, the position sensor 25 detects the position of the battery cell 200. If it is detected that the battery cell 200 will collide with the rotating mechanism 20 during the output process, an avoidance signal is sent to the rotating mechanism 20.

[0110] The rotating mechanism 20 receives the avoidance signal from the position sensor 25 , and the ray source 231 and the detector 232 switch from the detection position to the avoidance position to avoid the battery cell 200 ;

[0111] When the ray 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 rotating disk 22 reduces its rotation speed.

[0112] When the ray 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 rotating disk 22 increases its rotation speed;

[0113] The conveying mechanism 30 conveys the battery cell 200 out of the detection area;

[0114] The screening mechanism 40 transfers the unqualified battery cells 200 to a waste area.

[0115] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0116] Although the embodiments of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A detection device, comprising: Support mechanism (10); A rotating mechanism (20), the rotating mechanism (20) being arranged on the supporting mechanism (10), the rotating mechanism (20) comprising: a rotating bracket (21) and a rotating disk (22), the rotating bracket (21) being arranged on the supporting mechanism (10), and the rotating disk (22) being capable of circumferential rotation relative to the rotating bracket (21); a conveying mechanism (30), the conveying mechanism (30) passing through the rotating disk (22), and the conveying mechanism (30) is suitable for conveying the battery cell (200); a detection mechanism (23), the detection mechanism (23) being arranged on the rotating disk (22), the detection mechanism (23) comprising: a ray source (231) and a detector (232), the ray source (231) and the detector (232) being suitable for detecting the battery core (200) on the conveying mechanism (30), and the ray source (231) and the detector (232) being suitable for circumferential rotation on the rotating disk (22); An angle sensing mechanism (50) is connected to the rotating mechanism (20) by signal, and the angle sensing mechanism (50) is used to detect whether the ray source (231) or the detector (232) has reached a preset interval, and when the ray source (231) or the detector (232) has reached the preset interval, the rotating disk (22) is controlled to reduce its rotation speed.

2. The detection device according to claim 1, wherein: The angle sensing mechanism (50) comprises at least two angle sensors, the two angle sensors being arranged at intervals along the circumference of the rotating bracket (21) and used to detect the position of the ray source (231) or the detector (232), so as to reduce the rotation speed of the rotating disk (22) when the ray source (231) or the detector (232) rotates to between the two angle sensors, wherein the preset interval is the interval between two adjacent angle sensors.

3. The detection device according to claim 2, wherein: The angle sensing mechanism (50) comprises: a first angle sensor (51), a second angle sensor (52), a third angle sensor (53) and a fourth angle sensor (54) which are sequentially arranged at intervals along the circumferential direction of the rotating bracket (21). The first angle sensor (51), the second angle sensor (52), the third angle sensor (53) and the fourth angle sensor (54) are used to detect the position of the ray source (231) or the detector (232), so as to reduce the rotation speed of the rotating disk (22) when the ray source (231) or the detector (232) rotates 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), and to increase the rotation speed of the rotating disk (22) when the ray source (231) or the detector (232) rotates 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), wherein the preset interval is the interval between the first angle sensor (51) and the second angle sensor (52) or the interval between the third angle sensor (53) and the fourth angle sensor (54).

4. The detection device according to claim 1, wherein: The rotating disk (22) is provided with two radial moving mechanisms (221) arranged opposite to each other, and the radial moving mechanisms (221) can move closer to or farther away from the center of the rotating disk (22) along the radial direction of the rotating disk (22).

5. The detection device according to claim 4, wherein: The ray source (231) and the detector (232) are arranged on the radial moving mechanism (221) so that the ray source (231) and the detector (232) can be switched between a detection position and an avoidance position.

6. The detection device according to claim 1, wherein: The rotating mechanism (20) further comprises: a position sensor (25), wherein the position sensor (25) can detect the position of the battery core (200) on the transmission mechanism (30).

7. The detection device according to claim 1, further comprising: A screening mechanism (40) is adapted to transfer the battery cell (200) to a waste area when the detection mechanism (23) detects that the battery cell (200) is unqualified.

8. A detection method for battery cell detection, applicable to the detection device according to any one of claims 1 to 7, wherein: The detection method comprises: Placing the battery cell (200) on a conveying mechanism (30); The conveying mechanism (30) conveys the battery cell (200) to the detection area; The angle sensing mechanism (50) detects whether the radiation source (231) or the detector (232) reaches a preset interval, and controls the rotating disk (22) to reduce the rotation speed when the radiation source (231) or the detector (232) reaches the preset interval; The detection mechanism (23) performs defect detection on the battery cell (200) in the preset interval.

9. The detection method according to claim 8, wherein: When the battery cell (200) is placed on the conveying mechanism (30), the battery cell (200) is placed at a preset angle, wherein the preset angle is 15°-75°.

10. The detection method according to claim 9, wherein: Before the detection mechanism (23) detects the battery cell (200), the detection mechanism (23) further comprises: The position sensor (25) detects the position of the battery cell (200); If there is no interference between the position of the battery cell (200) and the detection mechanism (23), the transmission mechanism (30) transmits the battery cell (200) to move to the detection area; If the position of the battery cell (200) interferes with the detection mechanism (23), the detection mechanism (23) avoids interference.

11. The detection method according to claim 10, wherein: Before the detection mechanism (23) detects the battery cell (200), the detection mechanism (23) further comprises: The rotating disk (22) drives the radiation source (231) and the detector (232) to rotate at a certain angle so as to avoid the battery core (200); The conveying mechanism (30) conveys the battery cell (200) to a detection area; The rotating disk (22) drives the radiation source (231) and the detector (232) to rotate in a circumferential direction to detect the battery core (200); The conveying mechanism (30) conveys the battery cell (200) out of the detection area.

12. The detection method according to claim 10, wherein: Before the detection mechanism (23) detects the battery cell (200), the detection mechanism (23) further comprises: The rotating disk (22) drives the radiation source (231) and the detector (232) to rotate in a circumferential direction; The ray source (231) and the detector (232) are switched from a detection position to an avoidance position; The conveying mechanism (30) conveys the battery cell (200) to a detection area; The ray source (231) and the detector (232) are switched from the avoidance position to the detection position; The rotating disk (22) drives the radiation source (231) and the detector (232) to rotate in a circumferential direction to detect the battery core (200); The conveying mechanism (30) conveys the battery cell (200) out of the detection area.

13. The detection method according to claims 11-12, wherein: When the rotating disk (22) drives the radiation source (231) and the detector (232) to rotate in a circumferential direction to detect the battery cell (200), the method comprises: When the ray source (231) or the detector (232) rotates to the position where the first angle sensor (51) and the second angle sensor (52) are aligned, (52), and between the third angle sensor (53) and the fourth angle sensor (54); reducing the rotation speed of the rotating disk (22); When the ray source (231) or the detector (232) rotates 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 rotating disk (22) is increased.

14. The detection method according to claims 11-12, wherein: The screening mechanism (40) transfers the unqualified battery cells (200) to a waste area.

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