Inspection Equipment

Abstract

To provide an inspection device capable of inspecting objects by continuously flowing them into an inspection area without stopping a conveyor. [Solution] The inspection device 100 is an inspection device that inspects each predetermined inspection target area. The inspection device 100 includes an inspection room 10, an X-ray source 20 provided in the inspection room 10, a detection unit 22 that detects X-rays emitted from the X-ray source 20, a conveyor 12b that transports an inspection target 40 into the inspection room 10 and discharges the inspection target 40 from the inspection room 10, an image generation unit that generates an image based on the X-rays detected by the detection unit 22, multiple memories that store the images generated by the image generation unit, a determination unit that determines whether a lithium ion secondary battery is present in the inspection target 40, and a laser irradiation unit that irradiates a laser toward the inspection target 40 including the lithium ion secondary battery when the determination unit determines that a lithium ion secondary battery is present in the inspection target 40.

Description

[Technical Field]

[0001] The present invention relates to an inspection device for inspecting the presence or absence of a lithium ion secondary battery. [Background technology]

[0002] An X-ray inspection system has been proposed that inspects whether an item or group of items to be inspected contains a lithium-ion secondary battery. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2024-70780 Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide an inspection device that can inspect objects by continuously flowing them into an inspection area without stopping the conveyor. [Means for solving the problem]

[0005] The first inspection device of the present invention is An inspection device that inspects each predetermined inspection target area, Examination room and an X-ray source provided in the examination room; a detection unit that detects X-rays emitted from the X-ray source; a conveyor for transporting the test object into the test room and discharging the test object from the test room; an image generating unit that generates an image based on the X-rays detected by the detecting unit; a plurality of memories for storing images generated by the image generation unit; a determination unit that determines whether or not a lithium ion secondary battery is present in the inspection object; a laser irradiation unit that irradiates a laser beam toward the inspection object including the lithium ion secondary battery when the determination unit determines that the lithium ion secondary battery is present in the inspection object, when a first image is stored in a first memory of the plurality of memories, a second image generated after the first image is stored in a second memory of the plurality of memories; the first image is an image obtained by sensing a first inspection target area of ​​the conveyor; the second image is an image obtained by sensing a second inspection target area of ​​the conveyor; the first inspection target area and the second inspection target area are continuous, a sampling section for sampling the lithium ion secondary battery is located downstream of the inspection chamber; the determination of the presence or absence of a lithium ion secondary battery in the first inspection target area is performed by the determination unit using image data sent from the first memory to the determination unit; the determination unit acquires the data of the first image from the first memory and makes a determination when the detection unit detects the second inspection target area subsequent to the first inspection target area and stores the detected data in the second memory; When the lithium ion secondary battery is present, the laser irradiation unit performs laser tracking on the inspection object including the lithium ion secondary battery in the collection section.

[0006] The second inspection device of the present invention is An inspection device that inspects each predetermined inspection target area, a detection unit that detects infrared rays; a conveyor for transporting the inspection object; an image generating unit that generates an image based on the infrared light detected by the detecting unit; a plurality of memories for storing images generated by the image generation unit; a determination unit that determines whether or not a lithium ion secondary battery is present in the inspection object; a laser irradiation unit that irradiates a laser beam toward the inspection object including the lithium ion secondary battery when the determination unit determines that the lithium ion secondary battery is present in the inspection object, when a first image is stored in a first memory of the plurality of memories, a second image generated after the first image is stored in a second memory of the plurality of memories; the first image is an image obtained by sensing a first inspection target area of ​​the conveyor; the second image is an image obtained by sensing a second inspection target area of ​​the conveyor; the first inspection target area and the second inspection target area are continuous, a sampling section for sampling the lithium ion secondary battery is located downstream of the inspection chamber; the determination of the presence or absence of a lithium ion secondary battery in the first inspection target area is performed by the determination unit using image data sent from the first memory to the determination unit; the determination unit acquires the data of the first image from the first memory and makes a determination when the detection unit detects the second inspection target area subsequent to the first inspection target area and stores the detected data in the second memory; When the lithium ion secondary battery is present, the laser irradiation unit performs laser tracking on the inspection object including the lithium ion secondary battery in the collection section.

[0007] In the present invention, a driving shaft for driving the conveyor; a rotation measuring sensor that outputs the rotation speed of the drive rotation shaft as a pulse signal, calculating the amount of movement of the conveyor based on the number of pulse signals output by the rotation measuring sensor, based on correspondence data between the amount of movement of the conveyor and the number of pulse signals output by the rotation measuring sensor; The positions of the first inspection target area and the second inspection target area in the direction of travel can be identified by the amount of movement calculated based on the number of pulse signals of the conveyor.

[0008] In the present invention, the laser irradiation unit includes a laser oscillator and a mirror that is provided so as to be able to rotate or turn the laser light oscillated from the laser oscillator; The angle of the mirror can be controlled so that the laser is irradiated onto the inspection object.

[0009] In the present invention, The sampling section can be set based on the sensing start point of the detection unit of the inspection area, and can extend from a point that is twice the length of the first inspection area and the second inspection area in the direction of travel to a point that is three times the length of the first inspection area and the second inspection area in the direction of travel. [Effects of the Invention]

[0010] According to the present invention, the objects to be inspected are continuously conveyed through the inspection area, and the presence or absence of lithium ion secondary batteries can be confirmed without stopping the conveyor. Furthermore, if a lithium ion battery is present, the person performing the extraction can easily recognize the lithium ion secondary battery by irradiating it with a laser, thereby enabling the lithium ion secondary battery to be extracted more reliably. [Brief explanation of the drawings]

[0011] [Figure 1] 1 shows a configuration diagram of an inspection device according to a first embodiment. [Figure 2] 1 shows a configuration diagram of a laser irradiation device of an inspection device according to a first embodiment. [Figure 3] FIG. 2 shows a functional diagram for information processing of the inspection device according to the first embodiment. [Figure 4] 4 shows a timing chart for determining whether or not a lithium ion secondary battery is present in the inspection device according to the first embodiment. [Figure 5]4 shows a timing chart of the inspection device according to the first embodiment. [Figure 6] FIG. 10 is a diagram showing what kind of processing is performed for each position of each inspection target area, and shows the relationship between the processing between the inspection target areas. [Figure 7] An example of an inspection device equipped with an infrared detection unit is shown. [Figure 8] 1 shows an example of the configuration of an infrared detection unit. [Figure 9] FIG. 10 shows a functional diagram for information processing of an inspection device according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Preferred embodiments of the present invention will now be described in detail.

[0013] 1. First embodiment The inspection device will be described with reference to FIGS.

[0014] The inspection device 100 is an inspection device that inspects each predetermined inspection target area. The inspection device 100 may include an inspection room 10, an X-ray source 20 provided in the inspection room 10, a detection unit 22 that detects X-rays emitted from the X-ray source 20, a conveyor 12 that transports an inspection target 40 into the inspection room 10 and discharges the inspection target 40 from the inspection room 10, an image generation unit 24 that generates an image based on the X-rays detected by the detection unit 22, multiple memories 26 that store the images generated by the image generation unit 24, a determination unit 28 that determines whether a lithium ion secondary battery is present in the inspection target 40, and a laser irradiation unit 30 that irradiates a laser toward the inspection target 40 including the lithium ion secondary battery when the determination unit 28 determines that a lithium ion secondary battery is present in the inspection target 40. The determination unit 28 may include a cache memory that temporarily stores the image for image judgment.

[0015] When a first image is stored in a first memory 26a of the multiple memories 26, a second image generated after the first image can be stored in a second memory 26b of the multiple memories 26. The first image is an image generated by sensing a first inspection target area of ​​the conveyor 12, and the second image is an image generated by sensing a second inspection target area of ​​the conveyor 12. The first inspection target area and the second inspection target area are continuous, and a sampling section for sampling lithium ion secondary batteries is located downstream relative to the inspection chamber 10. The presence or absence of lithium ion secondary batteries in the first inspection target area is determined by the determination unit 28, which sends image data from the first memory 26a to the determination unit 28. The determination unit 28 obtains the data of the first image from the first memory 26a and makes a determination when the detection unit 22 detects the second inspection target area subsequent to the first inspection target area and stores the detected data in the second memory 26b.

[0016] When a lithium ion secondary battery is present, the laser irradiation unit 30 can perform laser tracking on the inspection object 40 including the lithium ion secondary battery in the collection section.

[0017] The inspection device 100 can include a drive rotation shaft for driving the conveyor 12 and a rotation measurement sensor 14 that outputs the number of rotations of the drive rotation shaft as a pulse signal. Based on correspondence data between the movement amount of the conveyor 12 and the number of pulse signals output by the rotation measurement sensor 14, the movement amount of the conveyor 12 can be calculated based on the number of pulse signals output by the rotation measurement sensor 14. The positions of the first inspection target area and the second inspection target area in the traveling direction can be identified by the movement amount calculated based on the number of pulse signals of the conveyor 12.

[0018] The laser irradiation unit 30 can include a laser oscillator 32 and a mirror 34 that is provided so as to be able to rotate or turn the laser light emitted from the laser oscillator 32. The angle of the mirror 34 can be controlled so that the laser is irradiated onto the inspection object 40.

[0019] The sampling section can be set based on the starting point of sensing by the detection unit 22 in the inspection area, and can extend from a point that is twice the length of the first inspection area and the second inspection area in the direction of travel to a point that is three times the length of the first inspection area and the second inspection area in the direction of travel.

[0020] A first X-ray leakage prevention tunnel 60 can be provided on the upstream side of the examination room 10, and a second X-ray leakage prevention tunnel 62 can be provided on the downstream side. A laser irradiation unit 30 can be provided above the second X-ray leakage prevention tunnel 62.

[0021] The inspection object 40 is fed onto the lead-in conveyor 12a, passed through the first X-ray leakage prevention tunnel 60, and transported to the X-ray inspection room 10, where the inspection object 40 is inspected by an X-ray sensor. After inspection, the inspection object 40 passes through the second X-ray leakage prevention tunnel 62 and is transported by the discharge conveyor 12b to a collection section where the lithium-ion secondary battery is extracted, and while the lithium-ion secondary battery is in the collection section, it is laser tracked by the laser irradiation unit 30. The lead-in conveyor 12a, the conveyor in the inspection room 10, and the discharge conveyor 12b can be continuous.

[0022] A method for tracking the lithium-ion secondary battery using the laser irradiation unit 30 will be described with reference to FIG. 2. The movement distance can be calculated from the rotation measurement sensor 14 of the conveyor 12, and the lithium-ion secondary battery can be irradiated with a laser. The laser irradiation unit 30 can include a laser oscillator 32 and a mirror 34. The degree of rotation of the mirror 34 is controlled by a mirror controller 36, so that the lithium-ion secondary battery is irradiated with the laser. The processing unit 16 of the X-ray device can calculate the movement distance and the angle of the mirror 34 for directing the laser at the inspection object 40 based on the degree of rotation measured by the rotation measurement sensor 14. The laser irradiation unit 30 is controlled so that the laser beam L1 continues to irradiate the lithium-ion secondary battery B1.

[0023] The rotation measurement sensor 14 can be configured to output the number of rotations of the rotary shaft that moves the conveyor 12 as a pulse signal. The sensor generates pulses synchronized with the moving distance of the conveyor 12. For example, the sensor can be configured to generate 10,000 pulses when the inspection object 40 moves 1 meter on the conveyor 12.

[0024] The mirror 34 may be, for example, an electromagnetic MEMS mirror 34. The pulse signal generated by the rotation measurement sensor 14 is acquired by the processing device 16, and information such as the amount of movement of the conveyor 12 and the position of the lithium-ion secondary battery is sent to the laser irradiation unit 30. The processing device 16 may have a function of synthesizing images. Information may be sent to the determination unit 28 via the processing device 16. The processing device 16 may control and process the X-ray source 20 and the detection unit 22.

[0025] If there are multiple lithium ion secondary batteries to be tracked in the inspection image, one laser irradiation unit 30 may be operated to irradiate multiple points, or multiple laser irradiation units 30 may be used to irradiate multiple points.

[0026] The method for processing the acquired image data will be described with reference to Figure 3. This processing is performed to inspect and confirm the presence or absence of a lithium-ion secondary battery. When detecting a lithium-ion secondary battery, two memories can be provided to hold images taken while the vehicle passes through the inspection zone during the processing time for that judgment.

[0027] The X-rays emitted from the X-ray source 20 and passing through the inspection object 40 are detected by the detection unit 22. An image is generated from the detected data. The image generation unit 24 can combine the image data acquired by the first detection unit 22a and the second detection unit 22b. The number of detection units 22 can be set based on the width that the detection unit 22 can detect and the width in the direction perpendicular to the movement direction. The detection unit 22 can be, for example, a line sensor. The image generation unit 24 and the determination unit 28 can be realized by a computer.

[0028] The image generated by the image generation unit 24 is assigned to either the first memory 26a or the second memory 26b via a selector S1. The image stored in the first memory 26a or the second memory 26b is selected via a selector S2 and sent to a determination unit 28, which determines whether or not a lithium-ion secondary battery is present. The determination unit 28 may be provided with a cache memory that temporarily stores data sent from the memory. The processing of the determination unit 28 may be based on, for example, a classifier or a determination algorithm learned by deep learning.

[0029] A specific processing method will be described with reference to FIG. 4. The first image is stored in the first memory 26a. The first image stored in the first memory 26a is sent to the determination unit 28, where it is determined whether a lithium-ion secondary battery is present. Simultaneously with the completion of acquisition of the first image, acquisition of the second image begins. The second image is then stored in the second memory 26b. By storing the second image in the second memory 26b, the first image data can be sent to the determination unit 28 while the second image is being stored, allowing the determination unit 28 to determine whether a lithium-ion secondary battery is present. If only one memory were used, the second image could not be acquired until the image was sent to the determination unit 28, which would require stopping the flow of the inspection object 40. Therefore, temporarily storing two consecutive images in separate memories is effective. The third image is stored in the first memory 26a and sent to the determination unit 28, where it is determined whether a lithium-ion secondary battery is present. The speed of the conveyor 12 can be set to, for example, 40 m / min, and the imaging time can be set to, for example, 1.5 seconds.

[0030] The relationship between the first image and the second image will be described with reference to FIG. 5. A start point P0, a first point P1, a second point P2, and a third point P3 are set according to the direction of movement. When the first portion C1 of the first inspection area reaches the start point P0, the detection unit 22 begins sensing to acquire the first image. The start point P0 can be the point where the detection unit 22 is located. As the first inspection area moves along the conveyor 12, the first portion C1 of the first inspection area reaches the first point P1, and the second portion C2 of the first inspection area reaches point P0. Sensing to acquire the first image is completed, image data generated by the image generation unit 24 is sent to the first memory 26a, and the detection unit 22 begins sensing to acquire the second image. In other words, the first image corresponds to the area from the first portion C1 to the second portion C2 of the first inspection area.

[0031] When the second portion C2 of the second inspection area reaches the start point P0, the detection unit 22 begins sensing to acquire the second image. At this time, the determination unit 28 determines the presence or absence of a lithium-ion secondary battery from the first image. When the second portion C2 of the second inspection area reaches the first point P1, the sensing to acquire the second image ends, completing acquisition of the second image and sending the sensing data to the second memory 26b. In other words, the second image corresponds to the area from the first portion C2 to the second portion C3 of the belt conveyor 12.

[0032] When the third portion C3 of the third inspection area reaches the start point P0, sensing begins to acquire a third image. When the first portion C1 of the first inspection area reaches the second point P2, if a lithium-ion secondary battery is present, tracking irradiation of the lithium-ion secondary battery begins with a laser until the first inspection area reaches the third point P3. Between the third point P3 and the second point P2, the extractor collects the lithium-ion secondary battery. When the second portion C2 of the second inspection area reaches the third point P3, if it is determined that a lithium-ion secondary battery is present based on the second image, tracking irradiation of the lithium-ion secondary battery begins.

[0033] The distance from the start point P0 to the first point P1 can be, for example, the distance at which 10,000 pulses are detected when the rotation measurement sensor 14 captures the movement of the rotary drive shaft of the conveyor 12. The distance from the first point P1 to the second point P2 can be, for example, the distance at which 10,000 pulses are detected when the rotation measurement sensor 14 captures the movement of the rotary drive shaft of the conveyor 12. The distance from the second point P2 to the third point P3 can be, for example, the distance at which 10,000 pulses are detected when the rotation measurement sensor 14 captures the movement of the rotary drive shaft of the conveyor 12. Although each distance is set in the same way, it is not limited to the distance at which 10,000 pulses are detected by the rotation measurement sensor 14, and can be the distance at which any pulse is detected.

[0034] The section from the start point P0 to the first point P1 is the inspection section, the section from the first point P1 to the second point P2 is the judgment section, and the section from the second point P2 to the third point P3 is the sampling section. The distance of the section from the start section P0 to the second point P2 can be set so that the number of pulse signals generated by the rotation measuring sensor 14 is 20,000, for example.

[0035] When the rotation measuring sensor 14 captures an image over a travel distance of 10,000 pulses (P0 to P1) in the direction of travel, the data is sent to the determination unit 28 via memory while the object is traveling the next 10,000 pulse distance (P1 to P2), and it is possible to determine whether or not a lithium ion secondary battery is present. Furthermore, the lithium ion secondary battery can be tracked with a laser over the next 10,000 pulse distance (P2 to P3).

[0036] An example of signal processing will be described with reference to FIG. 6. Based on an image captured while the device is in the inspection zone, the determination unit 28 processes the presence or absence of a lithium-ion secondary battery while moving through the determination zone. This processing time can be, for example, 0.3 to 0.5 seconds. When a lithium-ion secondary battery is detected while the device is in the determination zone, a detection signal is sent to the laser irradiation unit 30. A tracking start signal is sent to the laser irradiation unit 30 when tracking begins, i.e., when the collection zone begins, and the laser irradiation unit 30 performs laser tracking of the lithium-ion secondary battery. Position information of the lithium-ion secondary battery in the inspection target area (for example, the position of the belt in the case of the belt conveyor 12) is sent to the laser irradiation unit 30 while the device is in the determination zone. During tracking in the collection zone, information on the moving speed of the lithium-ion secondary battery (equivalent to the moving speed of the belt in the case of a belt conveyor) is sent to the laser irradiation unit 30 to synchronize with the speed of the conveyor 12.

[0037] As shown in FIG. 7, an infrared detection unit 50 can be provided in an inspection device 100 that uses X-rays. When lithium-ion secondary batteries are put through a bag-breaking machine, they may become deformed due to heat generation, even if they do not emit smoke. In some cases, it may be difficult to detect deformed batteries using the shape recognition method of the X-ray foreign body inspection device 100. For this reason, the infrared detection unit 50 can be used to detect deformed and heated lithium-ion secondary batteries, thereby detecting the lithium-ion secondary batteries.

[0038] The infrared detection unit 50 may be installed inside the X-ray inspection room 10 or at the location where the batteries are discharged from the X-ray inspection room 10. The infrared detection unit 50 can be attached to a mounting base 52 that is installed so as to straddle the discharge conveyor 12b. The discharge conveyor 12b allows a person who removes lithium-ion secondary batteries to remove the lithium-ion secondary batteries. As shown in FIG. 8, the infrared detection unit 50 can be connected to a processing device 16.

[0039] Lithium ion secondary batteries can be inspected while the inspection objects 40 are continuously flowing through the inspection room 10 without stopping the conveyor 12. Because the lithium ion secondary batteries are tracked by the laser irradiation unit 30, the collector can easily identify the lithium ion secondary batteries and can prevent lithium ion secondary batteries from being overlooked.

[0040] 2. Second embodiment Although an example has been shown in which X-rays from the X-ray source 20 are sensed by the detection unit 22 and an X-ray image is obtained, it is also possible to use a detection unit 70 that detects infrared rays to sense the temperature of the object 40 to identify a lithium ion secondary battery that has caught fire or is hot.

[0041] The inspection device according to the second embodiment differs from the inspection device according to the first embodiment in that the detection unit detects infrared rays, and does not use an X-ray source to inspect for the presence or absence of a lithium ion secondary battery. The inspection equipment is An inspection device that inspects each predetermined inspection target area can include a detection unit that detects infrared rays, a conveyor for transporting the inspection target, an image generation unit that generates an image based on the infrared rays detected by the detection unit, multiple memories that store the images generated by the image generation unit, a determination unit that determines whether a lithium ion secondary battery is present in the inspection target, and a laser irradiation unit that irradiates a laser toward the inspection target including the lithium ion secondary battery when the determination unit determines that a lithium ion secondary battery is present in the inspection target.When a first image is stored in a first memory of the multiple memories, a second image generated after the first image is stored in a second memory of the multiple memories, and the first image is an image of the first inspection target area of ​​the conveyor sensed.The second image is an image of the second inspection target area of ​​the conveyor sensed.

[0042] The first inspection target area and the second inspection target area are continuous, and the collection section for collecting lithium ion secondary batteries is located downstream relative to the inspection chamber. The presence or absence of lithium ion secondary batteries in the first inspection target area is determined by the judgment unit after image data is sent to the judgment unit from the first memory, and the judgment unit obtains the first image data from the first memory and makes the determination when the detection unit detects the second inspection target area following the first inspection target area and stores the detected data in the second memory.

[0043] When a lithium ion secondary battery is present, the laser irradiation unit can perform laser tracking on the inspection object including the lithium ion secondary battery in the collection section.

[0044] The detection unit 70 captures infrared light emitted from the object to be inspected, and can identify the temperature of the object to be inspected 40. The detection unit 70 can be an infrared camera, or more specifically, a thermograph. The detection unit 70 can be installed on a conveyor.

[0045] The process from detection to determination will be described with reference to FIG. 9. A first image captured by the detection unit 70 is sent to the first memory 26a. The first image sent to the first memory 26a is then sent to the determination unit 28, which determines whether or not a lithium-ion secondary battery is present. While the first image is being sent from the first memory 26a to the determination unit 28, a second image captured of an area adjacent to the area of ​​the first image is sent to the second memory 26b. In detail, a method similar to the image processing using the X-ray sensor according to the first embodiment can be applied. Identification of a lithium-ion secondary battery by the infrared detection unit 70 and identification of a lithium-ion secondary battery using X-rays may be combined.

[0046] The temperature of a lithium-ion secondary battery may rise if it is deformed or damaged. This is to inspect and confirm whether or not there is a lithium-ion secondary battery with a high temperature. When detecting a lithium-ion secondary battery, if an infrared image is processed by the judgment unit 28, two memories can be provided to hold images of the battery passing through the inspection zone during the judgment processing time. The processing by the judgment unit 28 can be based on a classifier or judgment algorithm learned by deep learning, for example.

[0047] In any of the above embodiments, the laser can be irradiated onto the lithium ion secondary battery if it is a standalone battery, or onto the device if the lithium ion secondary battery is housed in the device.

[0048] This embodiment can be modified in various ways within the scope of the present invention. [Explanation of symbols]

[0049] 10 Examination Room 12 Conveyor 12a Inlet conveyor 12b Discharge conveyor 14 Rotation measurement sensor 16 Processing equipment 20 X-ray source 22 Detection unit 22a First detection unit 22b Second detection unit 24 Image generation unit 26a First Memory 26b Second Memory 28 Judgment Department 30 Laser irradiation unit 32 Laser oscillator 34 Mirror 36 Mirror Controller 40 Inspection object 50 Infrared detection unit 52 Mounting base 60 First X-ray Leak Prevention Tunnel 62 Second X-ray Leak Prevention Tunnel 70 Infrared detector B1 Lithium-ion secondary battery L1 laser beam 100 Inspection equipment

Claims

1. An inspection device that inspects each predetermined inspection target area, Examination room and an X-ray source provided in the examination room; a detection unit that detects X-rays emitted from the X-ray source; a conveyor for transporting the test object into the test room and discharging the test object from the test room; an image generating unit that generates an image based on the X-rays detected by the detecting unit; a plurality of memories for storing images generated by the image generation unit; a determination unit that determines whether or not a lithium ion secondary battery is present in the inspection object; a laser irradiation unit that irradiates a laser beam toward the inspection object including the lithium ion secondary battery when the determination unit determines that the lithium ion secondary battery is present in the inspection object, when a first image is stored in a first memory of the plurality of memories, a second image generated after the first image is stored in a second memory of the plurality of memories; the first image is an image obtained by sensing a first inspection target area of ​​the conveyor; the second image is an image obtained by sensing a second inspection target area of ​​the conveyor, the first inspection target area and the second inspection target area are continuous, a sampling section for sampling the lithium ion secondary battery is located downstream of the inspection chamber; the determination of the presence or absence of a lithium ion secondary battery in the first inspection target area is performed by the determination unit using image data sent from the first memory to the determination unit; the determination unit acquires the data of the first image from the first memory and makes a determination when the detection unit detects the second inspection target area subsequent to the first inspection target area and stores the detected data in the second memory; When the lithium ion secondary battery is present, the inspection device performs laser tracking on the inspection object including the lithium ion secondary battery in the collection section using the laser irradiation unit.

2. An inspection device that inspects each predetermined inspection target area, a detection unit that detects infrared rays; a conveyor for transporting the inspection object; an image generating unit that generates an image based on the infrared light detected by the detecting unit; a plurality of memories for storing images generated by the image generation unit; a determination unit that determines whether or not a lithium ion secondary battery is present in the inspection object; a laser irradiation unit that irradiates a laser beam toward the inspection object including the lithium ion secondary battery when the determination unit determines that the lithium ion secondary battery is present in the inspection object, when a first image is stored in a first memory of the plurality of memories, a second image generated after the first image is stored in a second memory of the plurality of memories; the first image is an image obtained by sensing a first inspection target area of ​​the conveyor; the second image is an image obtained by sensing a second inspection target area of ​​the conveyor, the first inspection target area and the second inspection target area are continuous, a sampling section for sampling the lithium ion secondary battery is located downstream of the inspection chamber; the determination of the presence or absence of a lithium ion secondary battery in the first inspection target area is performed by the determination unit using image data sent from the first memory to the determination unit; the determination unit acquires the data of the first image from the first memory and makes a determination when the detection unit detects the second inspection target area subsequent to the first inspection target area and stores the detected data in the second memory; When the lithium ion secondary battery is present, the inspection device performs laser tracking on the inspection object including the lithium ion secondary battery in the collection section using the laser irradiation unit.

3. In claim 1 or 2, a driving shaft for driving the conveyor; a rotation measuring sensor that outputs the rotation speed of the drive rotation shaft as a pulse signal, calculating the amount of movement of the conveyor based on the number of pulse signals output by the rotation measuring sensor, based on correspondence data between the amount of movement of the conveyor and the number of pulse signals output by the rotation measuring sensor; An inspection device in which the positions of the first inspection target area and the second inspection target area in the direction of travel are identified by an amount of movement calculated based on the number of pulse signals of the conveyor.

4. In claim 1 or 2, the laser irradiation unit includes a laser oscillator and a mirror that is provided so as to be able to rotate or turn the laser light oscillated from the laser oscillator; An inspection device in which the angle of the mirror is controlled so that the laser is irradiated onto the object to be inspected.

5. In claim 1 or 2, The sampling area is based on the starting point of sensing by the detection unit of the inspection area, and extends from a point that is twice the length of the first inspection area and the second inspection area in the direction of travel to a point that is three times the length of the first inspection area and the second inspection area in the direction of travel.

Images