DETECTION DEVICE AND DETECTION METHOD FOR BATTERY CORE DETECTION

Abstract

A detection device and a detection method for detecting battery cores are provided. The detection device includes a support mechanism, a rotation mechanism, a transmission mechanism, and a detection mechanism. The rotation mechanism is mounted on the support mechanism and includes a rotation stand mounted on the support mechanism and a turntable that is rotatable in a circumferential direction relative to the rotation stand. The transmission mechanism includes two reciprocating transmission belts mounted on both sides of the turntable, respectively, that carry the battery cores into and out of the detection area. The detection mechanism is mounted on the turntable and includes a radiation source and a detector, which detect the battery core in the transmission mechanism and rotate in a circumferential direction on the turntable.

Description

[Technical Field]

[0001] This application claims priority from Chinese Patent Application No. 202310693090.6 filed on June 12, 2023, the contents of which are incorporated herein by reference.

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

[0003] As the demand for lithium batteries continues to grow, the market is placing increasingly higher demands on the quality of lithium batteries, and currently the consistency requirements for lithium batteries, especially power batteries, are becoming increasingly stringent.One related technology uses traditional industrial CT solutions, where detectors and optical machines scan the battery core in a static state, and the requirements for the position accuracy and angle deformation of the battery core angle to be detected are high.During the detection process, due to the influence of objective factors such as the position of the battery core and the angle deformation of the battery core, it is difficult to improve the detection quality, and the error rate is too high. Summary of the Invention

[0004] According to a detection device according to an embodiment of the first aspect of the present disclosure, the detection device includes a support mechanism, a rotation mechanism, a transmission mechanism, and a detection mechanism. The rotation mechanism is provided on the support mechanism and includes a rotation stand provided on the support mechanism and a turntable that is rotatable in a circumferential direction relative to the rotation stand. The transmission mechanism is provided on both sides of the turntable and includes a reciprocating transmission belt that carries the battery core into and out of a detection area. The detection mechanism is provided on the turntable and includes a radiation source and a detector, which detect the battery core in the transmission mechanism and rotate in a circumferential direction on the turntable.

[0005] In some embodiments, the transmission mechanism further includes a plurality of positioning modules spaced apart from one another and configured to position the transmission mechanism relative to the battery core.

[0006] In some embodiments, the rotation mechanism further includes a position sensor capable of detecting the position of the battery core in the transmission mechanism.

[0007] In some embodiments, the detection device further includes a screening mechanism including a first screening module that leaves the undetected battery cores on the reciprocating transmission belt.

[0008] Additionally, the screening mechanism further includes a second screening module that transports the battery core to a disposal area if the detection mechanism detects that the battery core is unacceptable.

[0009] According to a detection method for detecting a battery core according to an embodiment of the second aspect of the present disclosure, the detection method detects a battery core by a detection device, and the detection method includes: leaving the battery core on a transmission mechanism; the transmission mechanism transmitting the battery core to a detection area; and the detection mechanism detecting the battery core.

[0010] In some embodiments, when the battery core is left in the transmission mechanism, the battery core is positioned at a predetermined angle of 15°-75°.

[0011] In some embodiments, the method further includes: a rotating disk rotating the radiation source and the detector in a circumferential direction before the detection mechanism detects the battery core; reciprocating transmission belts on both sides of the detection mechanism moving the two battery cores to a detection area; the rotating disk rotating the radiation source and the detector in a circumferential direction to detect the battery cores; and the two reciprocating transmission mechanisms transporting the battery cores out of the detection area.

[0012] Additionally, the screening mechanism transports the battery cores that fail to pass the screening to a disposal area.

[0013] Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention.

[0014] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood by describing the embodiments with reference to the following drawings. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a front view of a detection device according to an embodiment of the first aspect of the present disclosure. [Figure 2] FIG. 2 is a plan cross-sectional view of a detection device according to an embodiment of the first aspect of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0016]

[0023] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings, examples of which are shown in the drawings, where the same or similar reference numerals represent the same or similar elements, or elements having the same or similar functions, throughout. The embodiments described below with reference to the drawings are merely illustrative and are intended to interpret the present disclosure, but are not intended to limit the present disclosure.

[0017] In describing this disclosure, orientations and positional relationships indicated by terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "top," "bottom," "front," "rear," "left," "right," "vertical," "horizontal," "ceiling," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on orientations and positional relationships shown in the drawings and are intended solely for the convenience of illustrating and simplifying the description of this disclosure. They do not expressly or imply that the devices or elements referenced must have a particular orientation or be constructed and operated in a particular orientation, and should not be construed as limiting the disclosure. Furthermore, features qualified by "first" and "second" may expressly or implicitly include one or more of those features. In describing this disclosure, unless otherwise specified, "plurality" means two or more.

[0018] It should be noted that in the description of the present disclosure, unless otherwise clearly stated and limited, the terms "mounted," "coupled," and "connected" should be understood in a broad sense, for example, to mean a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection via an intermediate medium, or an internal communication between two components. Those skilled in the art will be able to understand the specific meaning of the above terms in the present disclosure on a case-by-case basis.

[0019] The present disclosure provides a detection device that can increase detection quality and detection efficiency while reducing battery core placement requirements.

[0020] According to an embodiment of the detection device of the first aspect of the present disclosure, a rotation mechanism is provided on a support mechanism, and a detection mechanism is provided on the rotation mechanism. The detection mechanism can rotate circumferentially on the rotation mechanism. The transmission mechanism can transmit two battery cores to a detection area, respectively, with the two battery cores located on opposite sides of the turntable. When the detection device detects the battery cores, the radiation source and detector of the detection mechanism rotate circumferentially on the turntable to simultaneously detect the battery cores located on both sides of the turntable, improving detection efficiency. The detection mechanism rotates circumferentially on the rotation mechanism, enabling detection of the battery cores in multiple directions. This detects the tab alignment status and tab welding status for each battery core, and the placement position and placement angle of the battery cores on the transmission mechanism are not limited. This allows the detection device to reduce battery core placement requirements while improving detection quality and detection efficiency.

[0021] The present disclosure provides a detection method for detecting a battery core using the above detection device.

[0022] Hereinafter, a detection device 100 and a detection method for detecting a battery core 200 according to an embodiment of the present disclosure will be described with reference to FIGS.

[0023] As shown in FIGS. 1 and 2, according to the detection device 100 of the embodiment of the first aspect of the present disclosure, the detection device 100 includes a support mechanism 10, a rotation mechanism 20, a transmission mechanism 30, and a detection mechanism .

[0024] However, the rotation mechanism 20 is provided on the support mechanism 10, and includes a rotation stand 21 provided on the support mechanism 10, and a turntable 22 that is rotatable in a circumferential direction relative to the rotation stand 21. The transmission mechanism 30 includes two reciprocating transmission belts 32 provided on both sides of the turntable 22, and the reciprocating transmission belts 32 carry the battery core 200 into and out of the detection area. The detection mechanism 23 is provided on the turntable 22, and includes a radiation source 231 and a detector 232 that detect the battery core 200 in the transmission mechanism 30, and the radiation source 231 and the detector 232 rotate in a circumferential direction on the turntable 22.

[0025] Specifically, the rotation mechanism 20 is provided on the support mechanism 10, and the rotation mechanism 20 is provided with a detection mechanism 23. The detection mechanism 23 is circumferentially rotatable on the rotation mechanism 20. The transmission mechanism 30 can transmit two battery cores 200 to the detection area, respectively. When the two battery cores 200 are located on either side of the turntable and the detection device 100 detects the battery cores 200, the radiation source 231 and the detector 232 of the detection mechanism 23 rotate circumferentially on the turntable 22, and can simultaneously detect the battery cores 200 located on either side of the turntable, thereby improving detection efficiency. The detection mechanism 23 rotates circumferentially on the rotation mechanism 20, and can detect the battery cores 200 in multiple directions, detecting the tab alignment status and tab welding status of each battery core 200. The battery cores 200 are not limited to their positions or angles on the transmission mechanism 30.

[0026] According to the detection device 100 of the embodiment of the first aspect of the present disclosure, the detection device 100 can improve detection quality and detection efficiency while reducing the arrangement requirement of the battery core 200.

[0027] Optionally, the detection device 100 further includes a detection control system, the detection control system comprising: The reciprocating transmission belts on both sides of the detection mechanism 23 respectively move the two battery cores 200 to the detection area; When it is detected that the position of the battery core 200 does not collide with the rotation mechanism 20, the rotating disk is controlled to rotate the radiation source 231 and the detector 232 in the circumferential direction, and the battery core 200 is detected; Two reciprocating transmission mechanisms 30 transfer the battery core 200 from the detection area.

[0028] In some embodiments, the rotation mechanism 20 includes a rotation stand 21 mounted on the support mechanism 10 and a turntable 22 that is rotatable in a circumferential direction relative to the rotation stand 21 and that fixes a radiation source 231 and a detector 232.

[0029] Specifically, the rotation mechanism 20 is mounted on the support mechanism 10 via a rotation stand 21, and the rotation stand 21 can support a turntable 22, which can rotate circumferentially on the rotation stand 21. The radiation source 231 and the detector 232 are fixed to the turntable 22 and can rotate synchronously according to the turntable 22. When detecting the battery core 200, the radiation source 231 and the detector 232 can rotate circumferentially around the battery core 200 located within the detection area, and can emit and scan beams to the battery core 200 in multiple directions.

[0030] As a result, by rotating the turntable 22 in a circumferential direction, the battery core 200 located within the detection area can be detected in multiple directions, thereby improving the detection quality of the battery core 200.

[0031] Furthermore, the rotation mechanism 20 further includes a rotation connector 24 that is provided between the rotation stand 21 and the turntable 22 and reduces the resistance between the rotation stand 21 and the turntable 22 so that the turntable 22 can rotate freely.

[0032] Here, the configuration of the rotary connector 24 is not limited, and the rotary connector 24 may be an assembly of a circular slide rail and a circular slide block, or may be a bearing provided between the rotary stand 21 and the turntable 22.

[0033] When the rotary connector 24 is a circular slide rail and a circular slide block, the circular slide rail is provided on one of the rotating stand 21 and the rotating plate 22, and the circular slide block is provided on the other of the rotating stand 21 and the rotating plate 22, so that the circular slide rail and the circular slide block mesh with each other, allowing the rotating plate 22 to be freely rotated relative to the rotating stand 21.

[0034] Optionally, the rotation mechanism 20 further includes a drive motor fixed on the rotation stand 21, a drive gear provided on the motor shaft of the drive motor, and a driven gear provided on the outside of the turntable 22, and the drive gear and the driven gear mesh with each other. This allows the turntable 22 to rotate in the circumferential direction by the drive of the drive motor, further increasing the detection efficiency of the battery core 200.

[0035] The driven gear may be the entire circumference of the external teeth provided on the outside of the turntable 22, or may be a part of the external teeth provided on the outside of the turntable 22. When the driven gear is the entire circumference of the external teeth provided on the outside of the turntable 22, the turntable 22 can be rotated continuously in the circumferential direction by driving the drive motor, while when the driven gear is a part of the external teeth provided on the outside of the turntable 22, the turntable 22 can be rotated back and forth by a certain angle by driving the drive motor, and this can be selected according to actual needs.

[0036] In some embodiments, the transmission mechanism 30 further includes a plurality of spaced apart positioning modules 31, which can position the battery core 200. When the battery core 200 is placed on the transmission mechanism 30, the positioning modules 31 position the battery core 200, ensuring that the detected edge corners of each battery core 200 are all positioned appropriately. When the transmission mechanism 30 moves the battery core 200 into the detection area, this can ensure that the detection edge corners of each battery core 200 are all positioned at the same position, further improving detection accuracy.

[0037] 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 being perpendicular to each other, and both the first positioning portion 311 and the second positioning portion 312 being fixed to the transmission mechanism 30, a positioning space being formed inside the corner formed by the first positioning portion 311 and the second positioning portion 312, the edge corner of the battery core 200 to be detected being positioned in the positioning space, and two adjacent sides of the battery core 200 abutting against the first positioning portion 311 and the second positioning portion 312 respectively.

[0038] Specifically, when the battery core 200 needs to be detected, the battery core 200 is placed on the transmission mechanism 30, and one edge corner of the battery core 200 is placed in the positioning space, and the two adjacent sides of the edge corner are respectively abutted against the first positioning portion 311 and the second positioning portion 312. At this time, the battery core 200 is fixed to the transmission mechanism 30. This method can position the battery core 200 and ensure the positioning regularity of the battery core 200.

[0039] As a result, when the edge angle of the battery core 200 is subsequently detected by the detection mechanism 23, it can be detected without adjusting the position of the battery core 200, and detection efficiency can be increased while ensuring detection accuracy.

[0040] It should be noted that the connection form between the positioning module 31 and the transmission mechanism 30 is not limited here, and for example, the positioning module 31 can be connected to the transmission mechanism 30 by adhesive bonding, screw fastening, or fastening, and can be selected according to actual needs.

[0041] Alternatively, the first positioning portion 311 and the second positioning portion 312 may be grooves or protrusions formed on the transmission mechanism 30, and when the battery core 200 is placed on the transmission mechanism 30, the edge corners of the battery core 200 can be inserted into the grooves or protrusions, thereby fixing the position of the battery core 200.

[0042] Optionally, when the positioning module 31 is fixed to the transmission mechanism 30, it has a predetermined angle which is 0°-75°.

[0043] For example, the predetermined angle may be 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°, and may be set according to actual needs.

[0044] It should be noted that the number and installation location of the positioning modules 31 in the transmission mechanism 30 are not limited here. For example, the positioning modules 31 may be installed on the center line of the transmission mechanism 30 and spaced apart, or the positioning modules 31 may be installed in parallel on both sides of the center line of the transmission mechanism 30, and can be selected according to actual needs.

[0045] As can be seen, the arrangement of the battery core 200 in the transmission mechanism 30 varies depending on the installation mode of the positioning module 31.

[0046] When the positioning modules 31 are arranged at equal intervals on the center line of the transmission mechanism 30, in order to ensure the detection quality of the battery core 200 by the detection mechanism 23, the positioning modules 31 can be arranged at a predetermined angle so that the detection mechanism 23 can detect the edge corner of the battery core 200. The battery core 200 is placed in the positioning space with its edge corner abutting the first positioning portion 311 and the second positioning portion 312, respectively. In this case, multiple battery cores 200 can be placed at equal intervals on the transmission mechanism 30. As shown in FIG. 2, for example, if the predetermined angle of the positioning modules 31 is set to 45°, the battery core 200 is also arranged at a 45° inclination on the transmission mechanism 30. When the transmission mechanism 30 transmits the battery core 200 to the detection area, the detection mechanism 23 can detect the edge corner of the battery core 200 in the circumferential direction, further improving the detection accuracy.

[0047] In some embodiments, the rotation mechanism 20 further includes a position sensor 25 that detects the position of the battery core 200 in the transmission mechanism 30. The position sensor 25 can detect the position of the battery core 200 in the transmission mechanism 30. The position sensor 25 is signal-connected to the rotation mechanism 20. Before the transmission mechanism 30 transmits the battery core 200 and enters the detection area, the position sensor 25 performs detection. If the position sensor 25 detects that the position of the battery core 200 may soon interfere with the detection mechanism 23, it sends an avoidance signal to the rotation mechanism 20, causing the turntable 22 to drive the radiation source 231 and the detector 232 to stop rotating in the circumferential direction and avoid the battery core 200. If the position sensor 25 detects that the position of the battery core 200 will not interfere with the detection mechanism 23 or does not detect the battery core 200, the turntable 22 drives the radiation source 231 and the detector 232 to continue rotating in the circumferential direction.

[0048] This prevents the battery core 200 from colliding with the detection mechanism 23 when the battery core 200 is detected, thereby improving detection safety.

[0049] Here, the type of the position sensor 25 is not limited, and the position sensor 25 may be, for example, an optical position sensor 25, an ultrasonic position sensor 25, a light curtain sensor, or a camera.

[0050] When the position sensor 25 is an optical position sensor 25, a light beam is emitted by the transmitter. If the battery core 200 located in the transmission mechanism 30 interferes with the rotation mechanism 20, the light beam emitted from the transmitter touches the battery core 200 and is then reflected back to the optical position sensor 25. At this time, the sensor can calculate the distance between the rotation mechanism 20 and the battery core 200. If the distance between the two is smaller than a predetermined threshold, the optical position sensor 25 sends an avoidance signal to the rotation mechanism 20, causing the turntable 22 to stop the circumferential rotation of the radiation source 231 and the detector 232 and move away from the battery core 200. If the optical position sensor 25 does not receive a reflected signal, or if it receives a signal and calculates that the distance between the battery core 200 and the rotation mechanism 20 is equal to or greater than the predetermined threshold, the turntable 22 continues to drive the circumferential rotation of the radiation source 231 and the detector 232.

[0051] When the position sensor 25 is a light curtain sensor, the light curtain sensor can be installed upstream of the rotation mechanism 20 and near the transmission mechanism 30, and when the light curtain sensor detects that the light curtain is blocked, it sends an avoidance signal to the rotation mechanism 20, stopping the circumferential rotation of the radiation source 231 and the detector 232 to avoid the battery core 200, and when the light curtain sensor detects that the light curtain is not blocked, the turntable 22 continues to drive the circumferential rotation of the radiation source 231 and the detector 232.

[0052] When the position sensor 25 is a camera, the camera is mounted on the rotating stand 21 and can photograph the battery core 200 located on the transmission mechanism 30. By identifying the position of the battery core 200 in the image, it can determine whether the battery core 200 will interfere with the rotation mechanism 20. When it is determined from the image taken by the camera that the battery core 200 is about to collide with the rotation mechanism 20, the camera sends an avoidance signal to the rotation mechanism 20, and the turntable 22 stops the circumferential rotation of the radiation source 231 and the detector 232 to avoid the battery core 200. When the battery core 200 does not appear in the image taken by the camera, or when it is determined from the image taken by the camera that the battery core 200 will not collide with the rotation mechanism 20, the camera sends a signal to the turntable 22 mechanism, and the turntable 22 continues to drive the circumferential rotation of the radiation source 231 and the detector 232.

[0053] Here, the position of the position sensor 25 in the detection device 100 is not specifically limited, and it is sufficient that the position sensor 25 can detect whether the battery core 200 and the rotation mechanism 20 collide, and it can be installed as needed.

[0054] In some embodiments, the detection device 100 further includes a screening mechanism 40, which includes a first screening module 41 that leaves undetected battery cores 200 on the reciprocating transmission belt 32, and a second screening module 42 that transports the battery cores 200 to a disposal area if the detection mechanism 23 detects that the battery cores 200 are unacceptable.

[0055] Specifically, when the detection mechanism 23 detects that the battery core 200 is unqualified, the second screening module 42 transfers the unqualified battery core 200 to a disposal area. After the detection mechanism 23 has finished detecting the battery core 200, if the internal defect condition of the battery core 200 does not meet the requirements, the second screening module 42 can screen and transfer the unqualified battery core 200 to a disposal area on the transmission mechanism 30 so that the qualified battery core 200 can proceed to the next process. This can improve the detection efficiency of the detection device 100.

[0056] As can be understood, in the present application, the detection device 100 and the corresponding detection system can perform one-to-one numbering of the battery cores 200 detected by the detection device 100, and when the second screening module 42 transports the rejected battery cores 200 to the disposal area, the detection system also deletes the numbers and images corresponding to the rejected battery cores 200.

[0057] That is, the battery core 200 is first transmitted by the transmission mechanism 30 and detected by the detection mechanism 23. If the detection mechanism 23 determines that the battery core 200 is unqualified, the second screening module 42 transfers the battery core 200 to a disposal area. At the same time, the number and image corresponding to the unqualified battery core 200 are also deleted from the detection system. If the battery core 200 passes the detection of the detection mechanism 23 and is determined to be acceptable, the acceptable battery core 200 is allowed to proceed to the next process. This reduces the system resource occupation rate and further improves the detection efficiency of the detection device 100.

[0058] Thus, by installing the first screening module 41 and the second screening module 42, the detection efficiency of the detection device 100 can be further improved.

[0059] According to a detection method for detecting a battery core 200 in an embodiment of the second aspect of the present disclosure, the detection method is applied to any one of the detection devices 100 in the above-mentioned embodiments, and the detection method includes placing the battery core 200 on a transmission mechanism 30, the transmission mechanism 30 transmitting the battery core 200, and the detection mechanism 23 detecting the battery core 200.

[0060] In some embodiments, when the battery core 200 is placed in the transmission mechanism 30, the battery core 200 is placed at a predetermined angle, which may be between 15° and 75°.

[0061] Specifically, if the battery core 200 is left at a predetermined angle, the center line of the battery core 200 and the extension direction of the transmission mechanism 30 can form a certain angle, that is, the battery core 200 is placed diagonally on the transmission mechanism 30, and in this way, when the transmission mechanism 30 moves the battery core 200 to the detection area, the edge corner of the battery core 200 can be positioned in the detection area.

[0062] This makes it possible to improve the detection effect and increase the detection efficiency of the detection device 100.

[0063] For example, the predetermined angle may be 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°, and can be set according to actual needs.

[0064] As shown in FIG. 2, a detection method for the battery core 200 is described below with reference to a specific embodiment of the present disclosure.

[0065] The battery core 200 is left in the transmission mechanism 30 and positioned at a predetermined angle.

[0066] The rotating disk 22 rotates the radiation source 231 and the detector 232 in the circumferential direction, and at this time, the transmission mechanism 30 extends parallel to the rotation axis of the detection mechanism 23, and the transmission mechanism 30 transmits the battery core 200.

[0067] The reciprocating transmission mechanisms 30 on both sides of the detection mechanism 23 respectively move the two battery cores 200 to the detection area.

[0068] The position sensor 25 detects the position of the battery core 200, and sends a signal to the rotation mechanism 20 if it detects that the position of the battery core 200 is such that it cannot collide with the rotation mechanism 20.

[0069] After receiving the signal from the position sensor 25 , the rotation mechanism 20 controls the turntable 22 to rotate the radiation source 231 and the detector 232 in the circumferential direction, thereby detecting the battery core 200 .

[0070] Two reciprocating transmission mechanisms 30 move the battery core 200 out of the detection area.

[0071] The screening mechanism 40 transfers the battery cores 200 that fail to pass the screening to a disposal area.

[0072] In the description herein, the term "embodiment," "exemplary," or the like means that the particular feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present disclosure. In the present specification, general references to the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0073] Although embodiments of the present disclosure have been shown and described, those skilled in the art may make various changes, modifications, substitutions, and alterations without departing from the principles and spirit of the present disclosure, and the scope of the present disclosure is defined by the appended claims and their equivalents. [Explanation of symbols]

[0074] detection device 100, support mechanism 10, Rotation mechanism 20, rotation stand 21, turntable 22, detection mechanism 23, radiation source 231, detector 232, rotation connector 24, position sensor 25, Transmission mechanism 30, positioning module 31, first positioning part 311, second positioning part 312, reciprocating transmission belt 32 a screening mechanism 40, a first screening module 41, a second screening module 42, Battery Core 200.

Claims

1. A detection device, comprising: A support mechanism (10); a rotation mechanism (20) provided in the support mechanism (10), the rotation mechanism (20) including a rotation stand (21) provided in the support mechanism (10) and a rotating disk (22) rotatable in a circumferential direction relative to the rotation stand (21); a transmission mechanism (30) including two reciprocating transmission belts (32) provided on both sides of the rotating disk (22) and carrying the battery core (200) into and out of the detection area; a detection mechanism (23) provided on the rotating disk (22), which detects the battery core (200) in the transmission mechanism (30) and includes a radiation source (231) and a detector (232) that rotate in a circumferential direction on the rotating disk (22); A detection device characterized by:

2. The transmission mechanism (30) further includes a plurality of positioning modules (31) spaced apart from one another and configured to position the transmission mechanism with respect to the battery core (200).

2. The detection device according to claim 1.

3. The rotation mechanism (20) further includes a position sensor (25) capable of detecting the position of the battery core (200) in the transmission mechanism (30).

2. The detection device according to claim 1.

4. a screening mechanism (40) including a first screening module (41) for leaving the undetected battery cores (200) on the reciprocating transmission belt (32); 2. The detection device according to claim 1.

5. The screening mechanism (40) further includes a second screening module (42) that transfers the battery core (200) to a disposal area when the detection mechanism (23) detects that the battery core (200) is unacceptable.

5. The detection device according to claim 4.

6. A detection method for battery core detection, comprising: The detection device according to any one of claims 1 to 5, The detection method includes: Leaving the battery core (200) in the transmission mechanism (30); a transmission mechanism (30) transmitting the battery core (200) to a detection area; a detection mechanism (23) detecting the battery core (200); A detection method characterized by:

7. When the battery core (200) is left in the transmission mechanism (30), the battery core (200) is positioned at a predetermined angle of 15°-75°.

7. The detection method according to claim 6.

8. Before the detection mechanism (23) detects the battery core (200), The rotating disk (22) rotates the radiation source (231) and the detector (232) in a circumferential direction; The reciprocating transmission belts (32) on both sides of the detection mechanism (23) respectively move the two battery cores (200) to the detection area; The rotating disk (22) rotates the radiation source (231) and the detector (232) in a circumferential direction to detect the battery core (200); The two reciprocating transmission mechanisms (30) further transport the battery core (200) out of the detection area.

8. The detection method according to claim 7.

9. The screening mechanism (40) transfers the rejected battery cores (200) to a disposal area.

9. The detection method according to claim 8.

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