Inspection device and inspection method for battery cell inspection

Abstract

An inspection device (100) and an inspection method for a battery cell (200). The inspection device (100) comprises: a supporting mechanism (10), a rotating mechanism (20), a conveying mechanism (30), a rotary mechanism (40), and an inspection mechanism (23). The rotating mechanism (20) is arranged on the supporting mechanism (10), and the rotating mechanism (20) comprises a rotating support (21) and a rotating disc (22), wherein the rotating support (21) is arranged on the supporting mechanism (10), and the rotating disc (22) can circumferentially rotate relative to the rotating support (21); the conveying mechanism (30) runs through the rotating disc (22), and the conveying mechanism (30) is suitable for conveying the battery cell (200); the rotary mechanism (40) is arranged between the supporting mechanism (10) and the rotating mechanism (20), and the rotating mechanism (20) can rotate relative to the supporting mechanism (10) under the support of the rotary mechanism (40); and the inspection mechanism (23) is arranged on the rotating disc (22), and the inspection mechanism (23) comprises a ray source (231) and a detector (232), wherein the ray source (231) and the detector (232) are suitable for inspecting the battery cell (200) on the conveying mechanism (30), and the ray source (231) and the detector (232) are suitable for circumferentially rotating on the rotating disc (22). The inspection device (100) can improve the inspection quality and the inspection efficiency while reducing the placement requirements of the battery cell (200).

Description

Detection device and detection method for battery cell detection

[0001] This application claims priority to Chinese patent application No. 202310693558.1 filed on June 12, 2023, the entire contents of which are incorporated by reference into this application. 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] The present disclosure provides a detection device.

[0006] 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.

[0007] According to the detection device of the first embodiment of the present disclosure, the detection device includes: a support mechanism, a rotation mechanism, a transmission mechanism, a rotation mechanism, and a detection mechanism. The rotation mechanism is arranged on the support mechanism, and the rotation 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 rotation mechanism is arranged between the support mechanism and the rotation mechanism, and the rotation mechanism can rotate relative to the support mechanism under the support of the rotation mechanism; 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.

[0008] According to the detection device of the embodiment of the first aspect of the present disclosure, the rotating mechanism is arranged on the supporting mechanism, and the detecting mechanism is arranged on the rotating mechanism, the detecting mechanism can rotate circumferentially on the rotating mechanism, the conveying mechanism passes through the rotating disk, and the battery cell can pass through the rotating disk on the conveying mechanism, thereby realizing continuous detection of the battery cell, and the rotating mechanism is arranged between the supporting mechanism and the rotating mechanism, so that the rotating mechanism and the supporting mechanism can rotate relative to each other, that is, the rotating mechanism can be rotated by a certain angle, so that the line connecting the radiation source and the detector and the battery cell can form a certain angle to facilitate the detection of the corners of the battery cell. When the detection device is required to detect the battery cell, the rotating mechanism is first rotated by a certain angle through the rotating mechanism, and then the conveying mechanism conveys the battery cell to the detection area, and the radiation source and detector of the detection mechanism rotate circumferentially on the rotating disk, and then the battery cell located in the detection area is detected. 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 cell in this area. The detection mechanism can perform multi-directional detection of the battery cells by rotating circumferentially on the rotating disk, thereby detecting the alignment of the pole pieces and the welding condition of the pole pieces of each battery cell, and does not require the placement position and angle of the battery cells on the conveying mechanism.

[0009] 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.

[0010] 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.

[0011] In some embodiments, the conveying mechanism includes a plurality of positioning modules arranged at intervals, and the positioning modules are suitable for positioning the battery cells.

[0012] Optionally, the positioning modules are arranged in pairs and at intervals on the center line of the conveying mechanism, so that the battery cells are connected end to end on the conveying mechanism and the diagonal connecting line of the battery cells coincides with the center line of the conveying mechanism.

[0013] Furthermore, the positioning module includes a first positioning portion and a second positioning portion, and the first positioning portion and the second positioning portion intersect with each other and are perpendicular to each other to form four positioning spaces.

[0014] In some embodiments, the rotating mechanism further includes: a position sensor, which can detect the position of the battery cell on the transmission mechanism.

[0015] 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.

[0016] In some embodiments, there are two detection devices, which share one conveying mechanism and are spaced apart along the extension direction of the conveying mechanism.

[0017] According to the detection method for battery cell detection in the second aspect embodiment of the present disclosure, the detection method 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; and the detection mechanism detects the battery cells.

[0018] In some embodiments, before the detection mechanism detects the battery cell, the rotation mechanism rotates the rotation mechanism to a preset angle, wherein the preset angle is 15°-75°.

[0019] 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.

[0020] Furthermore, the screening mechanism transfers the unqualified battery cells to a waste area.

[0021] 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

[0022] 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:

[0023] FIG1 is a front view of a detection device according to an embodiment of the first aspect of the present disclosure.

[0024] FIG2 is a top cross-sectional view of the detection device according to the embodiment of the first aspect of the present disclosure.

[0025] FIG3 is a top cross-sectional view of a detection device according to a fourth embodiment of the present disclosure.

[0026] Figure numerals: detection device 100, support 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, rotating mechanism 40, screening mechanism 50, battery cell 200. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[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 rotation mechanism 40 and a detection mechanism 23 .

[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 rotation mechanism 40 is arranged between the supporting mechanism 10 and the rotating mechanism 20, and the rotating mechanism 20 can rotate relative to the supporting mechanism 10 under the support of the rotation mechanism 40; 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.

[0033] Specifically, the rotating mechanism 20 is arranged on the supporting mechanism 10, and the rotating mechanism 20 is provided with a detection mechanism 23. 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 cell 200 can pass through the rotating disk 22 on the conveying mechanism 30, thereby realizing continuous detection of the battery cell 200. The rotating mechanism 40 is arranged between the supporting mechanism 10 and the rotating mechanism 20, so that the rotating mechanism 20 and the support mechanism 10 can rotate relative to each other. That is to say, the rotating mechanism 20 can be rotated to a certain angle, so that the connection line between the radiation source 231 and the detector 232 can form a certain angle with the battery cell 200, so as to facilitate the detection of the corners of the battery cell 200. When the detection device 100 is required to detect the battery cell 200, the rotating mechanism 20 is first rotated to a certain angle by the rotating mechanism 40, and then the conveying mechanism 30 conveys the battery cell 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 the battery cell 200 located in the detection area is detected. 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 cell 200 in this area. By rotating circumferentially on the rotating disk 22, the detection mechanism 23 can perform multi-directional detection on the battery cell 200, thereby detecting the alignment of the electrode pieces and the welding condition of the electrode pieces of each battery cell 200, and there is no requirement for the placement position and placement angle of the battery cell 200 on the conveying mechanism 30.

[0034] 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.

[0035] Optionally, the detection device 100 further includes a detection control system, which includes:

[0036] The battery cells 200 are placed in the positioning modules 31. At this time, the positioning modules 31 are arranged side by side on both sides of the center line of the conveying mechanism 30. The battery cells 200 are placed diagonally on the conveying mechanism 30 with the ends connected.

[0037] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the extension direction of the transmission mechanism 30 and the rotation axis of the detection mechanism 23 are set at a preset angle.

[0038] The rotating mechanism 20 controls the rotating mechanism 40 to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;

[0039] The ray source 231 and the detector 232 are switched from the detection position to the avoidance position to avoid the battery cell 200 .

[0040] 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.

[0041] 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 .

[0042] 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.

[0043] 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.

[0044] It should be noted that the driven gear portion can be a full circle of external teeth disposed on the outside of the rotating disk 22, or it can be a partial circle of external teeth disposed on the outside of the rotating disk 22. When the driven gear portion is a full circle of external teeth disposed 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 disposed on the outside of the rotating disk 22, the rotating disk 22 can reciprocate through a certain angle under the drive of the drive motor. The choice can be made based on actual needs.

[0045] 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.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] 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.

[0051] 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.

[0052] Further optionally, the first positioning portion 311 and the second positioning portion cross each other and are perpendicular to each other, and four positioning spaces are formed on a side adjacent to the first positioning portion 311 and the second positioning portion 312 .

[0053] Specifically, when the first positioning portion 311 and the second positioning portion 312 intersect and are perpendicular to each other, four positioning spaces will be formed on the adjacent side of the two. The corners of the battery cell 200 to be tested can be placed in the positioning space. When the battery cell 200 needs to be tested, the two battery cells 200 can be placed at the diagonal corners of the positioning module 31 respectively, and the corners of each battery cell 200 can be placed in the positioning space on its side. In this way, multiple battery cells 200 can be connected end to end on the conveying mechanism 30 and placed diagonally.

[0054] Therefore, when the detection mechanism 23 detects the battery cells 200 , the corners of the two battery cells 200 can be detected at the same time, thereby improving the detection efficiency of the detection device 100 .

[0055] 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.

[0056] 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.

[0057] 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°.

[0058] 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.

[0059] 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 in pairs and set at intervals on the center line of the conveying mechanism 30. 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.

[0060] 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.

[0061] 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 inspection quality of the battery cells 200 by the inspection mechanism 23, the positioning module 31 can be set to a preset angle so that the inspection mechanism 23 can inspect 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. 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 inspection area, the inspection mechanism 23 can perform circumferential inspection on the corners of the battery cells 200, thereby improving the inspection accuracy.

[0062] As shown in Figure 3, when the positioning modules 31 are arranged in pairs and spaced apart on the centerline of the conveying mechanism 30, each pair of positioning modules 31 can simultaneously fix the positions of two battery cells 200 and can connect two adjacent battery cells 200 end to end. To ensure the quality of the detection mechanism 23's detection of the battery cells 200, the positioning modules 31 can be set at a certain angle so that the diagonal line connecting the battery cells 200 coincides with the centerline of the conveying mechanism 30. At this time, the centerline of the battery cells 200 and the centerline of the conveying mechanism 30 have a certain angle, and the corners of the battery cells 200 are connected end to end. When the conveying mechanism 30 conveys the battery cells 200 to the detection area, the detection mechanism 23 can simultaneously perform circumferential detection on the corners of the two battery cells 200, thereby improving detection accuracy.

[0063] When the positioning module 31 is arranged side by side on both sides of the center line of the conveying mechanism 30, as shown in Figure 2, 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 mechanism 40 is provided in the detection device 100, the rotating mechanism 20 can be set to a certain angle through the rotating mechanism 40 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 provided on the conveying mechanism 30. The two battery cells 200 are connected end to end and are diagonally arranged on both sides of the center line of the conveying mechanism 30 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] In some embodiments, the detection mechanism 23 further includes: a screening mechanism 50 , which is suitable for transferring the battery cells 200 to a waste area when the detection mechanism 23 detects that the battery cells 200 are unqualified.

[0072] Specifically, the screening mechanism 50 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 defects of the cells 200 do not meet the requirements, the screening mechanism 50 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.

[0073] 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 50 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.

[0074] 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 50 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.

[0075] In some embodiments, there are two detection devices 100 , which share one conveying mechanism 30 and are spaced apart along the extending direction of the conveying mechanism 30 .

[0076] Specifically, two detection devices 100 spaced apart along the extending direction of the conveying mechanism 30 can each detect one corner of the battery cell 200. Before detecting the battery cell 200, the rotating mechanisms 20 on the two detection devices 100 are each rotated by a certain angle via the rotating mechanism 40, and the two rotation directions are different, so that the motion axes of the two rotating mechanisms 20 form opposite angles. In this way, when the detection mechanism 23 detects the battery cell 200, the first detection device 100 can first detect one corner of the battery cell 200, and then the second detection device 100 can detect the other corner of the battery cell 200. In this way, the detection accuracy can be improved while ensuring the detection efficiency of the battery cell 200.

[0077] 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.

[0078] In some embodiments, when the battery cells 200 are placed on the conveyor mechanism 30, the diagonal line connecting the battery cells 200 coincides with the center line of the conveyor mechanism 30, and two adjacent battery cells 200 are connected end to end. In this way, when the conveyor mechanism 30 conveys the battery cells 200 to the inspection area, the inspection mechanism 23 can simultaneously perform circumferential inspection on the corners of the two battery cells 200, thereby improving inspection accuracy.

[0079] In some embodiments, before the detection mechanism 23 detects the battery cell 200 , the rotation mechanism 40 rotates the rotation mechanism 20 to a preset angle, wherein the preset angle is 15°-75°.

[0080] Specifically, by rotating the rotating mechanism 20 to a preset angle, the rotation axis of the rotating mechanism 20 can have a certain angle with the extension direction of the conveying mechanism 30, that is, the detection mechanism 23 and the battery cell 200 are at a certain angle. In this way, 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] Rotate the rotating mechanism 20 to a preset angle through the rotating mechanism 40;

[0086] Place the battery cells 200 in the positioning modules 31. The positioning modules 31 are arranged side by side on both sides of the center line of the conveying mechanism 30. The battery cells 200 are placed diagonally on the conveying mechanism 30 with the ends connected.

[0087] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the extension direction of the conveying mechanism 30 and the rotation axis of the detection mechanism 23 are set at a preset angle, and the conveying mechanism 30 conveys the battery cells 200.

[0088] The position sensor 25 detects the position of the battery cell 200. If the battery cell 200 is not detected or it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20, a transmission signal is sent to the rotating mechanism 20.

[0089] After the rotating mechanism 20 receives the transmission signal from the position sensor 25, the rotating disk 22 rotates normally;

[0090] The conveying mechanism 30 conveys the battery cell 200 to the inspection area;

[0091] 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 it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20;

[0092] 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 to detect the battery cell 200;

[0093] The conveying mechanism 30 conveys the battery cell 200 out of the detection area;

[0094] The screening mechanism 50 transfers the unqualified battery cells 200 to a waste area.

[0095] Example 2:

[0096] Rotate the rotating mechanism 20 to a preset angle through the rotating mechanism 40;

[0097] Place the battery cells 200 in the positioning modules 31. The positioning modules 31 are arranged side by side on both sides of the center line of the conveying mechanism 30. The battery cells 200 are placed diagonally on the conveying mechanism 30 with the ends connected.

[0098] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the extension direction of the conveying mechanism 30 and the rotation axis of the detection mechanism 23 are set at a preset angle, and the conveying mechanism 30 conveys the battery cells 200.

[0099] 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;

[0100] The rotating mechanism 20 receives the avoidance signal from the position sensor 25 and controls the rotating mechanism 40 to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;

[0101] The conveying mechanism 30 conveys the battery cell 200 to the inspection area;

[0102] 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 it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20;

[0103] 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 to detect the battery cell 200;

[0104] 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.

[0105] The rotating mechanism 20 receives the avoidance signal from the position sensor 25 and controls the rotating mechanism 40 to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;

[0106] The conveying mechanism 30 conveys the battery cell 200 out of the detection area;

[0107] The screening mechanism 50 transfers the unqualified battery cells 200 to a waste area.

[0108] Example 3:

[0109] Rotate the rotating mechanism 20 to a preset angle through the rotating mechanism 40;

[0110] Place the battery cells 200 in the positioning modules 31. The positioning modules 31 are arranged side by side on both sides of the center line of the conveying mechanism 30. The battery cells 200 are placed diagonally on the conveying mechanism 30 with the ends connected.

[0111] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the extension direction of the conveying mechanism 30 and the rotation axis of the detection mechanism 23 are set at a preset angle, and the conveying mechanism 30 conveys the battery cells 200.

[0112] 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;

[0113] 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 ;

[0114] The conveying mechanism 30 conveys the battery cell 200 to the inspection area;

[0115] 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 it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20;

[0116] 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;

[0117] 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 to detect the battery cell 200;

[0118] 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.

[0119] 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 ;

[0120] The conveying mechanism 30 conveys the battery cell 200 out of the detection area;

[0121] The screening mechanism 50 transfers the unqualified battery cells 200 to a waste area.

[0122] Example 4:

[0123] As shown in FIG3 , the rotating mechanism 20 is rotated to a preset angle by the rotating mechanism 40 ;

[0124] The battery cells 200 are placed in the positioning modules 31. At this time, the positioning modules 31 are arranged in pairs and spaced apart on the center line of the conveying mechanism 30. The diagonal line of the battery cells 200 coincides with the center line of the conveying mechanism 30. The battery cells 200 are placed diagonally on the conveying mechanism 30 in a head-to-tail manner.

[0125] The rotating disk 22 drives the radiation source 231 and the detector 232 to rotate circumferentially. At this time, the extension direction of the conveying mechanism 30 and the rotation axis of the detection mechanism 23 are set at a preset angle, and the conveying mechanism 30 conveys the battery cells 200.

[0126] 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;

[0127] 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 ;

[0128] The conveying mechanism 30 conveys the battery cell 200 to the inspection area;

[0129] 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 it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20;

[0130] 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;

[0131] 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 to detect the battery cell 200;

[0132] 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.

[0133] 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 ;

[0134] The conveying mechanism 30 conveys the battery cell 200 out of the detection area;

[0135] The screening mechanism 50 transfers the unqualified battery cells 200 to a waste area.

[0136] 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.

[0137] 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, wherein: include: 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 rotating mechanism (40), wherein the rotating mechanism (40) is arranged between the supporting mechanism (10) and the rotating mechanism (20), and the rotating mechanism (20) can rotate relative to the supporting mechanism (10) under the support of the rotating mechanism (40); 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).

2. 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).

3. The detection device according to claim 2, 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.

4. The detection device according to claim 1, wherein: The conveying mechanism (30) comprises a plurality of positioning modules (31) arranged at intervals, and the positioning modules (31) are suitable for positioning the battery core (200).

5. The detection device according to claim 1, wherein: The positioning modules (31) are arranged in pairs at intervals on the center line of the conveying mechanism (30) so that the battery cells (200) are connected end to end on the conveying mechanism (30) and the diagonal connecting lines of the battery cells (200) coincide with the center line of the conveying mechanism (30).

6. The detection device according to claim 4, wherein: The positioning module (31) comprises a first positioning portion (311) and a second positioning portion (312); the first positioning portion (311) and the second positioning portion (312) intersect and are perpendicular to each other to form four positioning spaces.

7. 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).

8. The detection device according to claim 1, wherein: Also includes: A screening mechanism (50) is provided, wherein the screening mechanism (50) 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.

9. The detection device according to any one of claims 1 to 8, wherein: There are two detection devices (100), the two detection devices (100) share one conveying mechanism (30), and are arranged at intervals along the extension direction of the conveying mechanism (30).

10. A detection method for battery cell detection, wherein: The detection device according to any one of claims 1 to 9, 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 detection mechanism (23) detects the battery cell (200).

11. The detection method according to claim 10, wherein: Before the detection mechanism (23) detects the battery cell (200), the rotation mechanism (40) rotates the rotation mechanism (20) to a preset angle, wherein the preset angle is 15°-75°.

12. The detection method according to claim 11, 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 claim 11, wherein: The screening mechanism (50) transfers the unqualified battery cells (200) to a waste area.

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