Testing device and testing method for object testing

Abstract

Provided are a testing device and testing method for object testing. The testing device comprises: a testing mechanism, a position sensing assembly, and a conveying mechanism. The testing mechanism comprises: a ray emitter, and at least two ray receivers arranged spaced apart in an object conveying direction; a testing area is provided between the ray emitter and each ray receiver; the testing mechanism is used for testing an object when the object is located in the testing area; the position sensing assembly is used for testing whether the object is located in the testing area; and the conveying mechanism is arranged between the ray emitter and the ray receivers and conveys the object, and the conveying mechanism is used for conveying the object at a first transmission speed when the testing mechanism does not test the object and for conveying the object at a second transmission speed when the testing mechanism tests the object, wherein the first transmission speed is greater than the second transmission speed.

Description

Detection device and detection method for object detection

[0001] This application claims priority to Chinese patent application No. 202311041902.5 filed on August 17, 2023, the contents of which are incorporated herein by reference. Technical Field

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

[0003] As the demand for object detection continues to expand, the market demands higher and higher detection quality, especially in the power battery sector, where the consistency requirements for battery cells are becoming increasingly stringent. When inspecting battery cells, X-rays are required to conduct 100% internal inspection. Some related technologies use flat-panel detectors, but during the inspection process, the cells remain stationary, resulting in low scanning efficiency and a significant impact on battery production efficiency.

[0004] Summary of the Invention

[0005] According to an embodiment of the first aspect of the present disclosure, a detection device for object detection includes: a detection mechanism, a position sensing assembly, and a conveying mechanism. The detection mechanism includes: a ray emitter and at least two ray receivers spaced apart along the object conveying direction, a detection area being provided between the ray emitter and each of the ray receivers, the detection mechanism being configured to detect the object when the object is within the detection area; the position sensing assembly being configured to detect whether the object is within the detection area; and the conveying mechanism being configured to convey the object between the ray emitter and the ray receivers, the conveying mechanism being configured to convey the object at a first conveying speed when the detection mechanism does not detect the object and at a second conveying speed when the detection mechanism detects the object, the first conveying speed being greater than the second conveying speed.

[0006] In some embodiments, the conveying mechanism includes a head end and an end end relatively arranged along the object conveying direction; the radiation receiver includes at least: a first receiver arranged on the conveying mechanism near the head end position and a second receiver arranged on the conveying mechanism near the end position; the detection area includes: a first sub-detection area arranged between the first receiver and the radiation emitter and a second sub-detection area arranged between the second receiver and the radiation emitter.

[0007] Optionally, the position sensing component includes: a first sensing element for detecting whether the object enters the first sub-detection area and a second sensing element for detecting whether the object leaves the second sub-detection area, wherein when the first sensing element detects that the object enters the first sub-detection area, the ray emitter and the first receiver, and the ray emitter and the second receiver simultaneously detect the object to achieve segmented detection of the object.

[0008] In some embodiments, the detection device further includes: a collimation mechanism having at least two collimation slots, the collimation slots being used to filter interfering rays to achieve collimation of the rays, and the collimation slots being arranged in a one-to-one correspondence with the ray receivers.

[0009] Optionally, the collimation mechanism includes a first collimator arranged between the ray emitter and the transmission mechanism and / or a second collimator between the transmission mechanism and the ray receiver, and the first collimator and the second collimator are both provided with at least two collimation slots.

[0010] In some embodiments, the detection device further includes: an imaging component, which performs splicing imaging based on the detection results of the detection mechanism.

[0011] According to a second aspect of an embodiment of the present disclosure, a detection method for object detection is applied to a detection device for object detection, wherein the detection device includes a detection mechanism, a position sensing component, and a transmission mechanism. The detection method includes:

[0012] The position sensing component detects whether the object is in a detection area;

[0013] When the object is not in the detection area, the conveying mechanism conveys the object at a first conveying speed;

[0014] When the object is in the detection area, the detection mechanism detects the object, and the conveying mechanism conveys the object at a second conveying speed.

[0015] Optionally, the position sensing component detects whether the object is in a detection area, comprising:

[0016] The first sensing element detects whether the object enters the first sub-detection area;

[0017] The second sensing element detects whether the object leaves the second sub-detection area.

[0018] Optionally, when the first sensor detects that the object enters the first sub-detection area, the ray emitter and the first receiver detect the object in the first sub-detection area, and the ray emitter and the second receiver detect the object in the second sub-detection area;

[0019] When the second sensing element detects that the object leaves the second sub-detection area, the detection mechanism stops detecting.

[0020] In some embodiments, after the detection mechanism detects the object, the imaging component performs stitching imaging based on the detection result of the detection mechanism.

[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 schematic diagram of a detection device according to an embodiment of the first aspect of the present disclosure when a battery cell has not entered a first sub-detection area.

[0024] FIG2 is a schematic diagram of a detection mechanism of a detection device according to an embodiment of the first aspect of the present disclosure.

[0025] FIG3 is a schematic diagram of a detection device according to an embodiment of the first aspect of the present disclosure detecting a battery cell using a detection mechanism.

[0026] FIG4 is a schematic diagram of the detection device according to the first embodiment of the present disclosure when a battery cell leaves the second sub-detection area.

[0027] FIG5 is a flowchart of a detection method for object detection according to an embodiment of the second aspect of the present disclosure.

[0028] FIG6 is a flowchart of a detection method for object detection according to an embodiment of the second aspect of the present disclosure.

[0029] Reference numerals: detection device 100 , detection mechanism 10 , ray emitter 11 , ray receiver 12 , first receiver 121 , second receiver 122 , transmission mechanism 20 , first sub-detection area 30 , second sub-detection area 40 , collimation mechanism 50 , collimation slot 51 , battery cell 200 . DETAILED DESCRIPTION

[0030] 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.

[0031] The present disclosure provides a detection device for object detection, which can improve object detection efficiency while ensuring object detection accuracy, thereby improving object production efficiency.

[0032] According to a first embodiment of the present disclosure, a detection device for object detection includes a detection area between a radiation emitter and each radiation receiver of a detection mechanism, and a conveyor mechanism disposed between the radiation emitter and the radiation receivers. When an object is placed on the conveyor mechanism, the conveyor mechanism conveys the object at a first transmission speed. When a position sensing assembly detects that the object is within the detection area, the conveyor mechanism switches from the first transmission speed to a second transmission speed, slowing the object's transmission speed. The detection mechanism then begins detecting the object, detecting a portion of the object within the detection area corresponding to each radiation receiver. When the position sensing assembly detects that the object is no longer within the detection area, indicating that the object has been detected, the detection mechanism stops detecting, and the conveyor mechanism switches from the second transmission speed to the first transmission speed, returning to normal transmission speed. By providing at least two radiation receivers, the object can be detected in sections after entering the detection area. After object detection is complete, the sectioned detection structures can be spliced ​​together to obtain a complete object detection result. Furthermore, because the conveyor mechanism slows down its transmission speed while the detection mechanism is detecting the object, the object detection result can be highly accurate. Thus, object detection efficiency can be improved while ensuring object detection accuracy, thereby improving object production efficiency.

[0033] The present disclosure further proposes a detection method for object detection, which uses a detection device to improve object detection efficiency while ensuring object detection accuracy.

[0034] A detection device 100 for detecting an object 200 according to an embodiment of the present disclosure will be described below with reference to FIG. 1 to FIG. 4 .

[0035] As shown in FIG. 1 to FIG. 4 , a detection device 100 for detecting an object 200 according to an embodiment of the first aspect of the present disclosure includes: a detection mechanism 10 , a position sensing component, and a transmission mechanism 20 .

[0036] It should be noted that the detection device for object detection described in the present disclosure does not impose specific restrictions on the types of detectable objects. In the subsequent embodiments, for ease of understanding, battery cell detection is used as an example, which has no impact on the scope of protection of the present disclosure. The battery cells described in the embodiments can be replaced with any object that requires X-ray detection.

[0037] Among them, the detection mechanism 10 includes: a ray emitter 11 and at least two ray receivers 12 arranged at intervals along the transmission direction of the battery cell 200, a detection area is set between the ray emitter 11 and each ray receiver 12, and the detection mechanism 10 is used to detect the battery cell 200 when the battery cell 200 is in the detection area; the position sensor component is used to detect whether the battery cell 200 is in the detection area; the transmission mechanism 20 is set between the ray emitter 11 and the ray receiver 12 to transmit the battery cell 200, and the transmission mechanism 20 is used to transmit the battery cell 200 at a first transmission speed when the detection mechanism 10 does not detect the battery cell 200 and to transmit the battery cell 200 at a second transmission speed when the detection mechanism 10 detects the battery cell 200, and the first transmission speed is greater than the second transmission speed.

[0038] Specifically, a detection area is set between the ray emitter 11 of the detection mechanism 10 and each ray receiver 12, and the transmission mechanism 20 is set between the ray emitter 11 and the ray receiver 12. When the battery cell 200 is placed on the transmission mechanism 20, the transmission mechanism 20 transmits the battery cell 200 at a first transmission speed. When the position sensing component detects that the battery cell 200 is in the detection area, the transmission mechanism 20 switches from the first transmission speed to the second transmission speed, and the transmission speed of the battery cell 200 slows down. The detection mechanism 10 starts to detect the battery cell 200. The detection mechanism 10 detects part of the battery cells 200 in the detection area corresponding to each ray receiver 12. When the position sensing component detects that the battery cell 200 is not in the detection area, it means that the battery cell 200 has been detected. The detection mechanism 10 stops detecting, and the transmission mechanism 20 switches from the second transmission speed to the first transmission speed, and the transmission speed of the battery cell 200 returns to normal.

[0039] By setting up at least two radiation receivers 12, the battery cell 200 can be inspected in segments after the battery cell 200 enters the inspection area. After the inspection of the battery cell 200 is completed, the segmented inspection structure can be spliced ​​together to obtain a complete inspection result of the battery cell 200. Moreover, since the transmission mechanism 20 slows down the transmission speed when the inspection mechanism 10 inspects the battery cell 200, the inspection result of the battery cell 200 can be made to have higher accuracy.

[0040] The detection device 100 for detecting the battery cell 200 according to the embodiment of the first aspect of the present disclosure can improve the detection efficiency of the battery cell 200 while ensuring the accuracy of the detection of the battery cell 200, thereby improving the production efficiency of the battery cell 200.

[0041] Optionally, the inspection mechanism 10 may be equipped with multiple radiation receivers 12, spaced apart along the direction in which the battery cells 200 are conveyed. When the conveyor mechanism 20 conveys the battery cells 200 into the inspection area, the conveyor mechanism 20 first switches from a first transmission speed to a second transmission speed, slowing the conveyance of the battery cells 200. The radiation emitter 11 can then simultaneously transmit radiation to the multiple radiation receivers 12. The radiation passes through the battery cells 200 and is received by the radiation receivers 12, thereby detecting defects in the battery cells 200. Because the conveyance speed of the battery cells 200 within the inspection area is relatively slow, the provision of multiple radiation receivers 12 along the direction in which the battery cells 200 are conveyed allows for simultaneous inspection of multiple portions of the battery cells 200 while the battery cells 200 are within the inspection area, thereby reducing the dwell time of the battery cells 200 within the inspection area and significantly improving the inspection efficiency of the battery cells 200.

[0042] Since the detection of the battery cells 200 by multiple radiation receivers 12 has overlapping areas, when the detection results of different parts of the battery cells 200 are spliced, the detection structures of the overlapping areas can be superimposed, which can further improve the data quality and thus improve the detection accuracy of the battery cells 200.

[0043] It should be noted that there is no specific limitation on the type of radiation receiver 12. The radiation receiver 12 can be a single-row detector or a multi-row narrow strip detector. When the radiation receiver 12 is a single-row detector, the detection mechanism 10 performs line scanning on the battery cells 200. By placing the battery cells 200 on the conveyor mechanism 20 and moving them during scanning, a planar scanning result can be generated. The results of multiple radiation receivers 12 are then combined to obtain a complete result of the battery cell 200 scan.

[0044] When the ray receiver 12 is a multi-row narrow strip detector, a narrow planar scanning result can be formed when inspecting the battery cell 200. Then, the battery cell 200 can be transported by the transport mechanism 20 to form a wider planar scanning result. Using a narrow strip detector can further shorten the inspection time of the battery cell 200 at the second transmission speed, thereby improving the inspection speed of the battery cell 200.

[0045] In some embodiments, the transmission mechanism 20 includes a head end and an end end relatively arranged along the transmission direction of the battery cell 200; the radiation receiver 12 includes at least: a first receiver 121 arranged on the transmission mechanism 20 near the head end position and a second receiver 122 arranged on the transmission mechanism 20 near the end position; the detection area includes: a first sub-detection area 30 arranged between the first receiver 121 and the radiation emitter 11 and a second sub-detection area 40 arranged between the second receiver 122 and the radiation emitter 11.

[0046] Specifically, the first receiver 121 is disposed near the head end of the conveying mechanism 20, and the second receiver 122 is disposed near the tail end of the conveying mechanism 20. The area between the first receiver 121 and the ray emitter 11 is the first sub-detection area 30, and the area between the second receiver 122 and the ray emitter 11 is the second sub-detection area 40. When the detection device 100 detects the battery cells 200, the conveying mechanism 20 detects and transmits the battery cells 200. After the position sensing component detects that the battery cells 200 are in the first sub-detection area 30, the detection mechanism 10 begins to detect the battery cells 200. The ray emitter 11 and the first receiver 121 detect a portion of the battery cells 200 within the first sub-detection area 30, and the ray emitter 11 and the second receiver 122 detect a portion of the battery cells 200 within the second sub-detection area 40. The conveying mechanism 20 then transmits the battery cells 200 at a second transmission speed.

[0047] Therefore, by simultaneously detecting the battery cells 200 within the first sub-detection area 30 and the second sub-detection area 40 respectively, the detection time of the battery cells 200 can be shortened, thereby improving the detection efficiency of the battery cells 200. Since the detection of the battery cells 200 is carried out in segments, the first receiver 121 and the second receiver 122 can respectively receive the rays passing through the battery cells 200, and the two do not interfere with each other, thereby ensuring that the battery cells 200 have higher detection accuracy.

[0048] Optionally, the position sensing component includes: a first sensor for detecting whether the battery cell 200 enters the first sub-detection area 30 and a second sensor for detecting whether the battery cell 200 leaves the second sub-detection area 40, wherein when the first sensor detects that the battery cell 200 enters the first sub-detection area 30, the ray emitter 11 and the first receiver 121, and the ray emitter 11 and the second receiver 122 simultaneously detect the battery cell 200 to realize segmented detection of the battery cell 200.

[0049] Specifically, the first sensor element can detect whether the battery cell 200 enters the first sub-detection area 30 , and the second sensor element can detect whether the battery cell 200 leaves the second sub-detection area 40 . The first sensor continuously detects the position of the battery cell 200. When the first sensor detects that the conveying mechanism 20 conveys the battery cell 200 to the first sub-inspection area 30, the conveying mechanism 20 switches from the first transmission speed to the second transmission speed. The ray emitter 11 and the first receiver 121, and the ray emitter 11 and the second receiver 122 simultaneously detect the battery cell 200. The battery cell 200 continues to move in the conveying direction at the second transmission speed. After the front end of the battery cell 200 passes through the first sub-inspection area 30, the front part of the battery cell 200 is detected by the ray emitter 11 and the first receiver 121, and the rear part of the battery cell 200 is detected by the ray emitter 11 and the second receiver 122. After the second sensor detects that the battery cell 200 leaves the second sub-inspection area 40, it indicates that the battery cell 200 has been inspected. The conveying mechanism 20 switches from the second transmission speed to the first transmission speed, and quickly transports the inspected battery cell 200 out of the inspection area.

[0050] Therefore, by detecting the position of the battery cell 200 by the first sensor and the second sensor, the detection efficiency of the battery cell 200 can be further improved.

[0051] It is understood that the radiation receiver 12 may further include a third receiver, a fourth receiver, ..., and an nth receiver, with the multiple receivers being disposed between the first receiver 121 and the second receiver 122 and spaced apart. Accordingly, the detection area includes a third sub-detection area, a fourth sub-detection area, ..., and an nth sub-detection area. After the first sensor detects that the battery cell 200 has entered the first sub-detection area 30, the radiation transmitter 11 and each radiation receiver 12 simultaneously detect the battery cell 200. By providing multiple radiation receivers 12, the travel distance of the battery cell 200 at the second transmission speed can be shortened, thereby further improving the detection efficiency of the battery cell 200.

[0052] When there are n radiation receivers 12, the n radiation receivers 12 are arranged at equal intervals, and the distance between two adjacent radiation receivers 12 is equal to n equal parts of the length of the battery cell 200. In other words, the distance between the first radiation receiver 121 and the second radiation receiver 122 is the same as the length of the battery cell 200. The n radiation receivers 12 divide the battery cell 200 into n equal parts along the length direction. The first radiation receiver 121 and the second radiation receiver 122 are respectively arranged at the front and rear ends of the battery cell 200 along the length direction, while the other radiation receivers 12 are arranged at the n equal parts of the battery cell 200. In this way, the n ray receivers 12 can divide the battery cell 200 into n-1 segments in the length direction. When the ray emitter 11 and the first receiver 121 start to detect the battery cell 200 entering the first sub-detection area 30, the other ray receivers 12 also work at the same time. When the second sensor detects that the battery cell 200 leaves the second sub-detection area 40, each ray receiver 12 will complete the detection of part of the battery cells 200 in its corresponding area, which can further improve the detection efficiency of the battery cell 200.

[0053] In some embodiments, the detection device 100 further includes: a collimation mechanism 50 having at least two collimation slots 51 , the collimation slots 51 being used to filter interfering rays to achieve collimation of the rays, and the collimation slots 51 being arranged in a one-to-one correspondence with the ray receivers 12 .

[0054] Specifically, when the ray transmitter 11 sends rays to the ray receiver 12, scattering and reflection will occur due to the nature of the rays themselves and the influence of the environment. These scattered and reflected rays will form interference rays, causing interference when the ray receiver 12 receives the detection signal, so that the detection data has a large noise point. By setting a collimation mechanism 50 and setting the collimation slot 51 in a one-to-one correspondence with the ray receiver 12, the collimation slot 51 can filter the scattered and reflected interference rays when the rays pass through, thereby reducing the noise point of the detection data and improving the detection accuracy of the detection device 100.

[0055] It can be understood that the number of collimating slots 51 of the collimating mechanism 50 corresponds one-to-one to the number of radiation receivers 12. For example, when there are multiple radiation receivers 12, there are also multiple collimating slots 51 of the collimating mechanism 50, and each collimating slot 51 is arranged corresponding to one radiation receiver 12.

[0056] It should be noted that there is no specific restriction on the width of the collimation slot 51. The larger the width of the collimation slot 51, the more rays passing through the collimation slot 51, and the higher the detection efficiency of the battery cell 200. However, correspondingly, there will be more signal noise points received by the ray receiver 12 through the collimation slot 51, resulting in lower detection accuracy of the battery cell 200. The smaller the width of the collimation slot 51, the fewer rays passing through the collimation slot 51, the fewer signal noise points received by the ray receiver 12, and higher detection accuracy of the battery cell 200. However, the detection efficiency of the battery cell 200 is lower. The width of the collimation slot 51 can be adjusted according to the requirements of battery cell 200 detection accuracy and efficiency during actual battery cell 200 detection.

[0057] It should be further explained that there is no specific restriction on the material of the collimation mechanism 50. For example, it can be a single protective material such as lead, iron, or a composite protective material such as barium cement, lead rubber, etc. It is only necessary to ensure that the other areas of the collimation mechanism 50 except the collimation groove 51 have a good shielding effect on the rays, and the selection can be made according to actual needs.

[0058] As shown in Figures 1, 3 and 4, optionally, the collimation mechanism 50 includes a first collimator arranged between the ray emitter 11 and the transmission mechanism 20 and / or a second collimator between the transmission mechanism 20 and the ray receiver 12, and both the first collimator and the second collimator are provided with at least two collimation slots 51.

[0059] Specifically, the collimation mechanism 50 can be set at different positions of the detection device 100. For example, the collimation mechanism 50 can be set between the ray emitter 11 and the transmission mechanism 20, the collimation mechanism 50 can also be set between the transmission mechanism 20 and the ray receiver 12, and the collimation structure can also be set between the ray emitter 11 and the transmission mechanism 20, and between the transmission mechanism 20 and the ray receiver 12. When a first collimator is set between the ray emitter 11 and the transmission mechanism 20, the rays can be first filtered by the first collimator after being emitted by the ray emitter 11. The collimated rays can then be used to detect the battery cells 200 located on the transmission mechanism 20, thereby improving the detection accuracy. When a second collimator is set between the transmission mechanism 20 and the ray receiver 12, the rays can first be used to detect the battery cells 200 after being emitted by the ray emitter 11. The rays that pass through the battery cells 200 are collimated by the second collimator and then received by the ray receiver 12, thereby improving the detection accuracy. When the first collimator and the second collimator are simultaneously provided between the ray emitter 11 and the transmission mechanism 20 , and between the transmission mechanism 20 and the ray receiver 12 , the detection accuracy of the battery cell 200 can be further improved through double filtering.

[0060] Optionally, the position sensing assembly further includes: a distance sensor, which is used to detect the movement distance of the battery cell 200. When the detection mechanism 10 detects the battery cell 200, if the detection mechanism 10 includes multiple ray receivers 12, the multiple receivers divide the detection area into multiple sub-detection areas, and each ray receiver 12 corresponds to a sub-detection area between the ray transmitter 11. When detecting the battery cell 200, the battery cell 200 can be divided into multiple detection segments for simultaneous detection, and the length of each detection segment in the transmission direction of the battery cell 200 is related to the number of ray receivers 12. The more ray receivers 12 there are, the shorter the length of each detection segment. Conversely, the fewer ray receivers 12 there are, the longer the length of each detection segment.

[0061] By providing a distance sensor to detect the travel distance of the battery cell 200, it can be determined whether the travel distance of the battery cell 200 has reached a preset detection segment length. If it is detected that the travel distance of the battery cell 200 has not reached the preset detection segment length, the conveying mechanism 20 continues to convey the battery cell 200, and the detection mechanism 10 continues to detect the battery cell 200. In this way, after the battery cell 200 is detected, the entire range of the battery cell 200 can be detected to avoid missed detections, thereby improving the detection accuracy of the battery cell 200.

[0062] In some embodiments, the detection device 100 further includes: an imaging component, which performs splicing imaging based on the detection results of the detection mechanism 10 .

[0063] Specifically, after the conveying mechanism 20 conveys the battery cell 200 to the detection area and the detection mechanism 10 completes the detection of the battery cell 200, at least two radiation receivers 12 can obtain the detection results of different positions of the battery cell 200. Through the imaging component, the detection results obtained by different radiation receivers 12 can be spliced ​​to form a complete battery cell 200 detection result.

[0064] If the detection mechanism 10 includes multiple ray receivers 12, the detection results obtained by the multiple ray receivers 12 may overlap to a certain extent. When the imaging component stitches the detection results, the overlapping areas can be superimposed and imaged, thereby making the detection accuracy of the overlapping areas higher.

[0065] Thus, the accuracy of the detection result of the battery cell 200 can be guaranteed.

[0066] The following describes a specific structure of a detection device 100 for detecting a battery cell 200 according to an embodiment of the present disclosure:

[0067] The detection device 100 includes a detection mechanism 10, a position sensing component, a transmission mechanism 20, a collimation mechanism 50, and an imaging component.

[0068] The detection mechanism 10 includes a radiation emitter 11 and a radiation receiver 12. A detection area is provided between the radiation emitter 11 and the radiation receiver 12. A conveyor mechanism 20 is provided between the radiation emitter 11 and the radiation receiver 12 to convey the battery cells 200. The conveyor mechanism 20 is configured to convey the battery cells 200 at a first transmission speed when the detection mechanism 10 is not inspecting the battery cells 200, and to convey the battery cells 200 at a second transmission speed when the detection mechanism 10 is inspecting the battery cells 200, wherein the first transmission speed is greater than the second transmission speed. The radiation receiver 12 includes a first receiver 121 provided near the head end of the conveyor mechanism 20, and a second receiver 122 provided near the end of the conveyor mechanism 20. The detection area includes a first sub-detection area 30 provided between the first receiver 121 and the radiation emitter 11, and a second sub-detection area 40 provided between the second receiver 122 and the radiation emitter 11.

[0069] The position sensing assembly includes a first sensor for detecting whether the battery cell 200 has entered the first sub-detection area 30 and a second sensor for detecting whether the battery cell 200 has left the second sub-detection area 40. When the first sensor detects that the battery cell 200 has entered the first sub-detection area 30, the ray emitter 11 and the first receiver 121, and the ray emitter 11 and the second receiver 122, simultaneously detect the battery cell 200, thereby achieving segmented detection of the battery cell 200. The imaging assembly generates a spliced ​​image based on the detection results of the detection mechanism 10.

[0070] The collimation mechanism 50 is disposed between the ray emitter 11 and the transmission mechanism 20 and has two collimation slots 51 . The collimation slots 51 are used to filter interfering rays to achieve ray collimation. The collimation slots 51 are disposed in a one-to-one correspondence with the ray receivers 12 .

[0071] According to a second aspect of an embodiment of the present disclosure, a detection method for detecting a battery cell 200 is applied to a detection device 100 for detecting the battery cell 200. The detection device 100 includes a detection mechanism 10, a position sensing component, and a transmission mechanism 20. The detection method includes:

[0072] S10, the position sensor component detects whether the battery cell 200 is in the detection area;

[0073] S20, when the battery cell 200 is not in the detection area, the conveying mechanism 20 conveys the battery cell 200 at a first transmission speed;

[0074] S30 , when the battery cell 200 is in the inspection area, the inspection mechanism 10 inspects the battery cell 200 , and the conveying mechanism 20 conveys the battery cell 200 at a second transmission speed.

[0075] In one embodiment of the present disclosure, the position sensing component detects whether the battery cell 200 is in the detection area, including:

[0076] S101: A first sensor detects whether the battery cell 200 enters the first sub-detection area 30;

[0077] S102 : The second sensor detects whether the battery cell 200 leaves the second sub-detection area 40 .

[0078] In one embodiment of the present disclosure, the detection method further includes:

[0079] When the first sensor detects that the battery cell 200 enters the first sub-inspection area 30, the conveying mechanism 20 conveys the battery cell 200 at the second transmission speed. The ray emitter 11 and the first receiver 121 detect the battery cell 200 in the first sub-inspection area 30, and the ray emitter 11 and the second receiver 122 detect the battery cell 200 in the second sub-inspection area 40.

[0080] The second sensor detects whether the battery cell 200 leaves the second sub-detection area 40;

[0081] When the second sensor detects that the battery cell 200 leaves the second sub-detection area 40 , the conveying mechanism 20 switches to the first transmission speed to convey the battery cell 200 , and the detection mechanism 10 stops detection.

[0082] After the detection mechanism 10 detects the battery cell 200 , the imaging component performs splicing imaging based on the detection result of the detection mechanism 10 .

[0083] It should be understood that although the terms "first," "second," and so on may be used herein to describe various elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the exemplary embodiments of the present disclosure.

[0084] It should be understood that the term "and / or" that may appear in this document is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B may indicate three situations: A exists alone, B exists alone, and A and B exist at the same time. The term " / and" that may appear in this document describes another type of association object relationship, indicating that two relationships may exist. For example, A / and B may indicate two situations: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0085] It should be understood that when an element is referred to herein as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present. Conversely, when an element is referred to herein as being "directly connected" or "directly coupled" to another element, no intervening elements are present. Additionally, other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.).

[0086] It should be understood that the terms used herein are used only to describe specific embodiments and are not intended to limit the example embodiments of the present disclosure. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that when the terms "comprise," "include," "include," and / or "comprising" are used herein, they specify the presence of the stated features, integers, steps, operations, units, and / or components, and do not preclude the presence or addition of one or more other features, quantities, steps, operations, units, components, and / or combinations thereof.

[0087] The present disclosure has been described through the above embodiments, but it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present disclosure to the described embodiments. It will be understood by those skilled in the art that many more variations and modifications may be made based on the teachings of the present disclosure, and all of these variations and modifications fall within the scope of protection claimed by the present disclosure.

Claims

1. A detection device for object detection, comprising: A detection mechanism (10), the detection mechanism (10) comprising: a ray transmitter (11) and at least two ray receivers (12) arranged at intervals along a transmission direction of the object (200), a detection area being arranged between the ray transmitter (11) and each of the ray receivers (12), the detection mechanism (10) being used to detect the object (200) when the object (200) is in the detection area; a position sensing component, the position sensing component being used to detect whether the object (200) is in the detection area; A conveying mechanism (20), the conveying mechanism (20) being arranged between the ray transmitter (11) and the ray receiver (12) for conveying the object (200), the conveying mechanism (20) being used to convey the object (200) at a first transmission speed when the detection mechanism (10) does not detect the object (200), and being used to convey the object (200) at a second transmission speed when the detection mechanism (10) detects the object (200), the first transmission speed being greater than the second transmission speed.

2. The detection device for object detection according to claim 1, wherein: The conveying mechanism (20) comprises a head end and a tail end which are arranged opposite to each other along the conveying direction of the object (200); The radiation receiver (12) comprises at least: a first receiver (121) arranged on the transmission mechanism (20) near the head end position and a second receiver (122) arranged on the transmission mechanism (20) near the end end position; The detection area comprises: a first sub-detection area (30) arranged between the first receiver (121) and the ray emitter (11), and a second sub-detection area (40) arranged between the second receiver (122) and the ray emitter (11).

3. The detection device for object detection according to claim 2, wherein: The position sensing component comprises: a first sensing element for detecting whether the object (200) enters the first sub-detection area (30) and a second sensing element for detecting whether the object (200) leaves the second sub-detection area (40). When the first sensor detects that the object (200) enters the first sub-detection area (30), the ray transmitter (11) and the first receiver (121), and the ray transmitter (11) and the second receiver (122) simultaneously detect the object (200) to achieve segmented detection of the object (200).

4. The detection device for object detection according to claim 1, further comprising: A collimation mechanism (50), the collimation mechanism (50) having at least two collimation slots (51), the collimation slots (51) being used to filter interfering rays to achieve collimation of the rays, the collimation slots (51) being arranged in a one-to-one correspondence with the ray receivers (12).

5. The detection device for object detection according to claim 4, wherein: The collimation mechanism (50) comprises a first collimator arranged between the ray emitter (11) and the transmission mechanism (20) and / or a second collimator arranged between the transmission mechanism (20) and the ray receiver (12), and the first collimator and the second collimator are both provided with at least two collimation slots (51).

6. The detection device for object detection according to claim 1, further comprising: An imaging component, wherein the imaging component performs splicing imaging based on the detection result of the detection mechanism (10).

7. A detection method for object detection, applied to a detection device (100) for object (200) detection, wherein: The detection device (100) comprises a detection mechanism (10), a position sensing component and a transmission mechanism (20), and the detection method comprises: The position sensing component detects whether the object (200) is in a detection area; When the object (200) is not in the detection area, the conveying mechanism (20) conveys the object (200) at a first conveying speed; When the object (200) is in the detection area, the detection mechanism (10) detects the object (200), and the conveying mechanism (20) conveys the object (200) at a second transmission speed.

8. The detection method for object detection according to claim 7, wherein: The position sensing component detects whether the object (200) is in a detection area, comprising: The first sensor detects whether the object (200) enters a first sub-detection area (30); The second sensing element detects whether the object (200) leaves the second sub-detection area (40).

9. The detection method for object detection according to claim 8, wherein: When the first sensor detects that the object (200) enters the first sub-detection area (30), the ray transmitter (11) and the first receiver (121) detect the object (200) in the first sub-detection area (30), and the ray transmitter (11) and the second receiver (122) detect the object (200) in the second sub-detection area (40); When the second sensor detects that the object (200) leaves the second sub-detection area (40), the The detection mechanism (10) stops detecting.

10. The detection method for object detection according to claim 7, wherein: After the detection mechanism (10) detects the object (200), the imaging component performs splicing imaging based on the detection result of the detection mechanism (10).

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