Secondary battery inspection device

Abstract

The present invention relates to a secondary battery inspection device and, more specifically, to a secondary battery inspection device capable of carrying out visual inspection while reducing errors, when photographing the entire outer surfaces of batteries, as the batteries do not deviate from set positions.

Description

Secondary battery inspection device

[0001] Cross-citation with related applications

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0180157 filed on December 6, 2024, and all contents disclosed in the document of said Korean Patent Application are incorporated herein as part of this specification.

[0003] Technology field

[0004] The present invention relates to a secondary battery inspection device, and more specifically, to a secondary battery inspection device capable of performing an external inspection while reducing errors when photographing all outer surfaces of a battery by ensuring that the battery does not deviate from its designated position.

[0005] Generally, there are various types of secondary batteries, such as nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, lithium-ion polymer batteries, and lithium-metal batteries. These secondary batteries are used in many places, including small products such as smartphones, smartwatches, smart rings, smart glasses, portable gaming devices, and electric bicycles, as well as large products requiring high output such as electric vehicles and hybrid vehicles, and energy storage systems (ESS) and backup power storage devices that store surplus power or renewable energy.

[0006] A secondary battery includes an electrode assembly formed by alternately stacking electrodes and separators, and a battery case that houses the electrode assembly. Such secondary batteries are classified into pouch type and can type depending on the material of the battery case housing the electrode assembly. The pouch type houses the electrode assembly in a pouch-type battery case made of a flexible material. The can type houses the electrode assembly in a can-type battery case made of a rigid material, such as metal.

[0007] Once the manufacturing of secondary batteries is complete, activation and degassing processes are performed; however, during this process, the exterior of the can-type battery case may become deformed or damaged. Therefore, it is essential to perform an exterior inspection of the secondary batteries.

[0008] FIG. 1 is a perspective view of a conventional secondary battery inspection device (3).

[0009] Among the external inspection techniques for secondary batteries, there is a vision inspection technique that checks for defects by analyzing images generated by photographing the battery with a camera. However, conventionally, as shown in FIG. 1, a pusher (31) that has the battery (2) placed on its upper surface rotates back and forth with its own central axis as the axis of rotation, and a camera (32) located around the battery (2) also rotates back and forth with the central axis of the pusher as the axis of rotation. In this way, all outer surfaces of the battery (2) are photographed to perform the external inspection process. However, the battery (2) placed on the upper surface of the pusher (31) is not fixed to the pusher (31). Therefore, when the pusher (31) rotates back and forth, a slip phenomenon occurs in which the battery (2) slides slightly on the upper surface of the pusher (31) due to inertia. Consequently, since the battery (2) deviates from its proper position, there was a problem in that an error occurred between the actual appearance and the generated images when all outer surfaces of the battery (2) were photographed.

[0010] In addition, when the pusher (31) and the camera (32) rotate and reciprocate, a problem may occur where the pusher (31) or the camera (32) does not reach a designated position and returns while performing an external inspection on numerous batteries (2).

[0011] To solve this problem, one could consider attaching a magnet to the pusher to secure the battery; however, even in this case, there is still a problem where slippage occurs if the pusher's rotation speed increases.

[0012] One could consider a method where the camera rotates one full circle around the battery after stopping it. However, generally, multiple batteries are arranged in a line and move continuously as they go through various processes. The visual inspection process is also performed when the continuously moving batteries are positioned one by one in a specific area; however, since multiple batteries must all stop whenever the camera rotates around them, there is a problem that a significant amount of time is required to perform visual inspections on numerous batteries in sequence.

[0013] One could also consider installing multiple cameras on both sides of the batteries. Specifically, one could install two cameras facing each other on either side of a path where multiple batteries are arranged in a line and move, and then simultaneously capture images with both cameras as the batteries pass through the path one by one. However, in this case, lighting interferes with the cameras, resulting in backlit images, which presents a problem where the batteries appearing in the footage are not clear.

[0014] The problem that the present invention aims to solve is to provide a secondary battery inspection device that can perform external inspection while reducing errors when photographing all outer surfaces of a battery, by ensuring that the battery does not deviate from its correct position.

[0015] The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0016] A secondary battery inspection device according to an embodiment of the present invention for solving the above problem comprises: a first rotating part having a plurality of outer grippers formed outwardly at equal intervals along an outer surface for gripping a battery from the outside; a second rotating part having a plurality of inner grippers formed inwardly at equal intervals along an inner surface for gripping the battery from the inside; a shaft positioning the first rotating part and the second rotating part at different heights; a plurality of pushers that move upward and downward and raise and lower the battery; and a first camera located outside the first rotating part, facing one of the outer grippers, and capturing the battery gripped by the outer gripper to generate a first image. and includes a second camera located inside the second rotating part, facing one of the inner grippers, and generating a second image by photographing the battery gripped by the inner gripper, wherein the first rotating part, the second rotating part, and the shaft all share the same central axis, and the central axis becomes the axis of rotation and rotates around the axis of rotation, and the plurality of pushers rotate together with the first rotating part, the second rotating part, and the shaft around the axis of rotation.

[0017] In addition, the first rotating part, the second rotating part, the shaft, and the pusher can rotate at the same angular velocity.

[0018] In addition, the plurality of outer grippers, the plurality of inner grippers, and the plurality of pushers may all have the same number.

[0019] In addition, the positions of the plurality of outer grippers, the plurality of inner grippers, and the plurality of pushers can all correspond to each other.

[0020] In addition, the first rotating part may be located below the second rotating part.

[0021] Additionally, when a first battery among the plurality of batteries is placed on the upper surface of a first pusher among the plurality of pushers, and a first outer gripper among the plurality of outer grippers grips the first battery from the outside of the first rotating part, the first camera can photograph the first battery to generate a first image.

[0022] Additionally, when the first camera generates the first image of the first battery, the first pusher rotates around the rotation axis and can raise the first battery toward the first inner gripper among the plurality of inner grippers.

[0023] Additionally, when the first inner gripper grips the first battery, the second rotating part can rotate until the first battery reaches a position facing the second camera.

[0024] In addition, when the first battery reaches the position where the second camera is facing, the second camera can photograph the first battery to generate a second image.

[0025] Additionally, when the first pusher raises the first battery, the second battery among the plurality of batteries is placed on the upper surface of the second pusher among the plurality of pushers, and the second outer gripper among the plurality of outer grippers can grip the second battery.

[0026] In addition, the second rotating part may be located below the first rotating part.

[0027] Additionally, when a first battery among the plurality of batteries is placed on the upper surface of a first pusher among the plurality of pushers, and a first inner gripper among the plurality of inner grippers grips the first battery from the inside of the second rotating part, the second camera can photograph the first battery to generate a second image.

[0028] Additionally, when the second camera generates the second image of the first battery, the first pusher rotates around the rotation axis and can raise the first battery toward the first outer gripper among the plurality of outer grippers.

[0029] Additionally, when the first outer gripper grips the first battery, the first rotating part can rotate until the first battery reaches a position facing the first camera.

[0030] In addition, when the first battery reaches the position where the first camera is facing, the first camera can photograph the first battery to generate a first image.

[0031] Additionally, when the first pusher raises the first battery, the second battery among the plurality of batteries is placed on the upper surface of the second pusher among the plurality of pushers, and the second inner gripper among the plurality of inner grippers can grip the second battery.

[0032] Other specific details of the present invention are included in the detailed description and drawings.

[0033] According to embodiments of the present invention, at least the following effects are achieved.

[0034] When performing external inspection of secondary batteries, since the batteries do not deviate from their designated positions, capturing images of all outer surfaces of the batteries can reduce the discrepancy with the actual appearance.

[0035] In addition, visual inspection of multiple batteries can be performed quickly, thereby saving visual inspection time.

[0036] The effects according to the present invention are not limited to those exemplified above, and various other effects are included in this specification.

[0037] FIG. 1 is a perspective view of a conventional secondary battery inspection device (3).

[0038] FIG. 2 is a perspective view showing a first battery (21) being gripped by a first outer gripper (1111) of a first rotating part (11) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0039] Figure 3 is a schematic diagram showing the appearance of Figure 2 from above the first rotating part (11).

[0040] FIG. 4 is a perspective view showing the first pusher (141) raising the first battery (21) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0041] FIG. 5 is a perspective view showing a first battery (21) being gripped by a first inner gripper (1211) of a second rotating part (12) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0042] FIG. 6 is a schematic diagram showing the appearance of FIG. 5 from above the second rotating part (12).

[0043] FIG. 7 is a perspective view showing the second rotating part (12) rotating while the first inner gripper (1211) is gripping the first battery (21) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0044] FIG. 8 is a perspective view showing the first battery (21) reaching the position where the second camera (16) is facing in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0045] FIG. 9 is a schematic diagram showing the appearance of FIG. 8 from above the second rotating part (12).

[0046] FIG. 10 is a perspective view showing the first pusher (141) lowering the first battery (21) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0047] FIG. 11 is a perspective view showing the first battery (21) being gripped again by the first outer gripper (1111) of the first rotating part (11) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0048] FIG. 12 is a perspective view showing a secondary battery inspection device (1a) according to a modified example of one embodiment of the present invention.

[0049] FIG. 13 is a perspective view showing a first battery (21) being gripped by a first inner gripper (1211b) of a second rotating part (12b) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0050] FIG. 14 is a schematic diagram showing the appearance of FIG. 13 from above the second rotating part (12b).

[0051] FIG. 15 is a perspective view showing the first pusher (141b) raising the first battery (21) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0052] FIG. 16 is a perspective view showing a first battery (21) being gripped by a first outer gripper (1111b) of a first rotating part (11b) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0053] FIG. 17 is a schematic diagram showing the appearance of FIG. 16 from above the first rotating part (11b).

[0054] FIG. 18 is a perspective view showing the first rotating part (11b) rotating while the first outer gripper (1111b) is gripping the first battery (21) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0055] FIG. 19 is a perspective view showing the first battery (21) reaching the position where the first camera (15b) is facing in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0056] FIG. 20 is a schematic diagram showing the appearance of FIG. 19 from above the first rotating part (11b).

[0057] FIG. 21 is a perspective view showing the first pusher (141b) lowering the first battery (21) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0058] FIG. 22 is a perspective view showing the first battery (21) being gripped again by the first inner gripper (1211b) of the second rotating part (12b) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0059] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0060] Unless otherwise defined, all terms used in this specification (including technical and scientific terms) may be used in a meaning that is commonly understood by those skilled in the art to which the present invention pertains. Additionally, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0061] The terms used herein are for describing the embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. As used herein, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other components in addition to the components mentioned.

[0062] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0063] FIG. 2 is a perspective view showing a first battery (21) being gripped by a first outer gripper (1111) of a first rotating part (11) in a secondary battery inspection device (1) according to one embodiment of the present invention, and FIG. 3 is a schematic diagram showing the view of FIG. 2 from above the first rotating part (11).

[0064] A secondary battery inspection device (1) according to the present invention comprises: a first rotating part (11) having a plurality of outer grippers (111) that grip the battery (2) from the outside and are formed outwardly at equal intervals along the outer surface; a second rotating part (12) having a plurality of inner grippers (121) that grip the battery (2) from the inside and are formed inwardly at equal intervals along the inner surface; a shaft (13) that positions the first rotating part (11) and the second rotating part (12) at different heights; a plurality of pushers (14) that move upward and downward and raise and lower the battery (2); and a first camera (15) located outside the first rotating part (11), facing one of the outer grippers (111), and capturing the battery (2) gripped by the outer gripper (111) to generate a first image. and includes a second camera (16) located inside the second rotating part (12), facing one of the inner grippers (121), and capturing the battery (2) that the inner gripper (121) grips to generate a second image, wherein the first rotating part (11), the second rotating part (12), and the shaft (13) all share the same central axis, and the central axis becomes the rotation axis (A) and rotates around the rotation axis (A), and the plurality of pushers (14) rotate together with the first rotating part (11), the second rotating part (12), and the shaft (13) around the rotation axis (A).

[0065] According to one embodiment of the present invention, as shown in FIG. 2, the first rotating part (11) is located below the second rotating part (12), and the second rotating part (12) is located above the first rotating part (11). Then, the first camera (15) photographs the battery (2) while the outer gripper (111) formed on the first rotating part (11) is gripping the battery (2). After that, the pusher (14) raises the battery (2), and the second camera (16) photographs the battery (2) while the inner gripper (121) formed on the second rotating part (12) is gripping the battery (2). By doing so, the photographing of all outer surfaces of the battery (2) can be completed.

[0066] In the secondary battery inspection device (1) according to the present invention, a plurality of outer grippers (111) are formed outwardly at equal intervals along the outer surface of the first rotating part (11). Then, the battery (2) is gripped from the outside of the first rotating part (11). To this end, the outer grippers (111) may have a U-shape when viewed from above, and the distance between the two ends may be equal to or slightly larger than the diameter of the battery (2) so that the battery (2) can be inserted. In this way, the battery (2) does not deviate from its proper position, and all of the plurality of batteries (2) can be positioned at a constant position to perform an external inspection. However, the device is not limited to this, and the outer grippers (111) may have various shapes as long as all of the plurality of batteries (2) can be positioned at a constant position.

[0067] The outer gripper (111) does not grip or adhere the battery (2) with strong force, but rather the battery (2) is inserted into the outer gripper (111) and the position of the battery (2) is gripped by a weak frictional force. Thus, when the pusher (14) moves the battery (2) later, the battery (2) can easily come out of the outer gripper (111).

[0068] Multiple batteries (2) are positioned one by one in a specific area at regular intervals while moving. And whenever the first rotating part (11) rotates, the multiple outer grippers (111) each grip the batteries (2) positioned one by one in a sequence. Therefore, in order for the multiple outer grippers (111) to reach the specific area where the batteries (2) are located whenever the first rotating part (11) rotates, it is preferable that the first rotating part (11) has an outer surface with a constant ring shape or disc shape.

[0069] A plurality of inner grippers (121) are formed at equal intervals along the inner circumference of the second rotating part (12) toward the inside. Then, the battery (2) is gripped from the inside of the second rotating part (12). To this end, the inner grippers (121) may have a U-shape when viewed from above, and the distance between the two ends may be equal to or slightly larger than the diameter of the battery (2) so that the battery (2) can be inserted. In this way, the battery (2) does not deviate from its correct position, and all of the multiple batteries (2) can be positioned at a constant position to perform an external inspection. However, the method is not limited to this, and the inner grippers (121) may have various shapes as long as all of the multiple batteries (2) can be positioned at a constant position.

[0070] The inner gripper (121) does not grip or adhere the battery (2) with strong force, but rather the battery (2) is inserted into the inner gripper (121) and grips the position of the battery (2) with weak frictional force. Thus, when the pusher (14) moves the battery (2) later, the battery (2) can easily come out of the inner gripper (121).

[0071] Multiple batteries (2) are positioned one by one in a specific area at regular intervals while moving. And whenever the second rotating part (12) rotates, multiple inner grippers (121) each grip the batteries (2) positioned one by one in a sequence. Therefore, in order for the multiple inner grippers (121) to reach the specific area where the batteries (2) are located whenever the second rotating part (12) rotates, it is preferable for the second rotating part (12) to have an inner surface with a constant ring shape. In particular, since there is an empty space on the inside of the second rotating part (12), the inner grippers (121), the batteries (2), and the second camera (16) can be positioned in this empty space.

[0072] The shaft (13) positions the first rotating part (11) and the second rotating part (12) at different heights. According to one embodiment of the present invention, the shaft (13) may have a cylindrical shape formed to be elongated upward. The first rotating part (11) is positioned lower than the second rotating part (12), and the second rotating part (12) is positioned higher than the first rotating part (11). The first rotating part (11) and the second rotating part (12) are fixed to the shaft (13) and rotate together as the shaft (13) rotates.

[0073] The first rotating part (11), the second rotating part (12), and the shaft (13) all share the same central axis. This central axis becomes the rotation axis (A), and they all rotate around the same rotation axis (A). At this time, since the first rotating part (11) and the second rotating part (12) are fixed to the shaft (13) and rotate together, the first rotating part (11), the second rotating part (12), and the shaft (13) all rotate at the same angular velocity.

[0074] The pusher (14) moves upward and downward, raising and lowering the battery (2). According to one embodiment of the present invention, the battery (2) is placed on the upper surface of the pusher (14) and is gripped by the outer gripper (111) of the first rotating part (11). Then, when the pusher (14) moves upward, the battery (2) comes out of the outer gripper (111), is raised by the pusher (14), and is gripped by the inner gripper (121) of the second rotating part (12). Then, when the pusher (14) moves downward, the battery (2) comes out of the inner gripper (121) and is lowered by the pusher (14).

[0075] The pushers (14) are formed in plurality and are formed at equal intervals along the periphery of the first rotating part (11), the second rotating part (12), and the shaft (13). Then, a plurality of batteries (2) are placed on the upper surface of each pusher (14) one by one at regular intervals. These plurality of pushers (14) rotate together with the first rotating part (11), the second rotating part (12), and the shaft (13) around the same rotation axis (A). And the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate at the same angular velocity.

[0076] The plurality of outer grippers (111) of the first rotating part (11), the plurality of inner grippers (121) of the second rotating part (12), and the plurality of pushers (14) are all the same in number and their positions correspond to each other. Therefore, whenever the pusher (14) moves upward or downward, the battery (2) placed on the upper surface of the pusher (14) can move up or down between the outer gripper (111) and the inner gripper (121).

[0077] The first camera (15) is positioned outside the first rotating part (11) and faces one outer gripper (111). It then captures the battery (2) gripped by the outer gripper (111) of the first rotating part (11) to generate a first image. While the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate around the rotation axis (A), the first camera (15) does not rotate. Then, as the first rotating part (11) rotates, when one of the plurality of outer grippers (111) is positioned at the location where the first camera (15) faces, the first camera (15) then captures one battery (2) gripped by one of the outer grippers (111). At least one mirror (not shown) may be placed around the battery (2), and the mirror may be positioned at a specific angle of inclination with respect to the first camera (15). In particular, two mirrors may be symmetrically positioned on each side of the battery (2) at a distance from the battery (2) so as not to obstruct the rotation path of the first rotating part (11). Thus, the first image generated shows a part of the first side (S1), the second side (S2), and a part of the fourth side (S4) of the battery (2).

[0078] The second camera (16) is located inside the second rotating part (12) and faces one inner gripper (121). It then captures the battery (2) gripped by the inner gripper (121) of the second rotating part (12) to generate a second image. While the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate around the rotation axis (A), the second camera (16) does not rotate. Then, as the second rotating part (12) rotates, when one of the plurality of inner grippers (121) is positioned at the location where the second camera (16) faces, the second camera (16) then captures one battery (2) gripped by one inner gripper (121). At least one mirror (not shown) may be placed around the battery (2), and the mirror may be positioned at a specific angle of inclination with respect to the second camera (16). In particular, to avoid obstructing the rotation path of the second rotating part (12), four mirrors may be symmetrically arranged on the upper and lower sides of each side of the battery (2). Thus, the third side (S3), part of the second side (S2), and part of the fourth side (S4) of the battery (2) appear in the generated second image.

[0079] The first image and the second image generated by the first camera (15) and the second camera (16), respectively, may be still images, but are not limited thereto and may be moving videos.

[0080] Hereinafter, the operation of a secondary battery inspection device (1) according to one embodiment of the present invention will be described in order with reference to each drawing. Although it is described that a plurality of outer grippers (111), a plurality of inner grippers (121), and a plurality of pushers (14) are all formed in fours, they are not limited thereto and can be formed in various numbers such as eight, twelve, etc., as long as the number of the plurality of outer grippers (111), the plurality of inner grippers (121), and the plurality of pushers (14) is the same.

[0081] As illustrated in FIG. 2, among a plurality of batteries (2), a first battery (21) is placed on the upper surface of a first pusher (141) among a plurality of pushers (14). Then, as illustrated in FIG. 2 and FIG. 3, among a plurality of outer grippers (111), a first outer gripper (1111) grips the first battery (21) from the outside of the first rotating part (11). Then, a first camera (15) photographs the first battery (21) to generate a first image of the first battery (21). As described above, at least one mirror (not shown) may be placed around the first battery (21), and the mirror may be placed at an angle of inclination with respect to the first camera (15). Accordingly, the first image may show a first side (S1), a part of a second side (S2), and a part of a fourth side (S4) of the first battery (21).

[0082] FIG. 4 is a perspective view showing the first pusher (141) raising the first battery (21) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0083] When the first camera (15) generates a first image of the first battery (21), the first pusher (141) moves upward as shown in FIG. 4. At this time, the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) all rotate at the same angular velocity around the same rotation axis (A). Accordingly, the first pusher (141) moves upward and simultaneously rotates around the rotation axis (A) to raise the first battery (21) placed on the upper surface, and the first battery (21) comes out of the first outer gripper (1111) and is raised by the first pusher (141).

[0084] FIG. 5 is a perspective view showing a first battery (21) being gripped by a first inner gripper (1211) of a second rotating part (12) in a secondary battery inspection device (1) according to one embodiment of the present invention, and FIG. 6 is a schematic diagram showing the view of FIG. 5 from above the second rotating part (12).

[0085] The plurality of outer grippers (111), the plurality of inner grippers (121), and the plurality of pushers (14) are all the same in number and their positions correspond to each other. Accordingly, when the first pusher (141) moves upward, the first battery (21) moves out of the first outer gripper (1111) and rises toward the first inner gripper (1211) among the plurality of inner grippers (121). And when the first battery (21) reaches the second rotating part (12), as shown in FIGS. 5 and 6, the first inner gripper (1211) of the second rotating part (12) grips the first battery (21) from the inside of the second rotating part (12).

[0086] FIGS. 5 and 6 illustrate that when the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate 90°, the first inner gripper (1211) grips the first battery (21), but the position at which the first inner gripper (1211) grips the first battery (21) may differ depending on the rising speed of the pushers (14). That is, if the upward speed of the pusher (14) is faster, the first inner gripper (1211) may grip the first battery (21) when the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate at an angle less than 90°, and conversely, if the upward speed of the pusher (14) is slower, the first inner gripper (1211) may grip the first battery (21) when the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate at an angle greater than 90°.

[0087] Meanwhile, when the first pusher (141) raises the first battery (21), as shown in FIG. 5, the second battery (22) among the plurality of batteries (2) is placed on the upper surface of the second pusher (142) among the plurality of pushers (14). Then, the second outer gripper (1112) among the plurality of outer grippers (111) grips the second battery (22) from the outside of the first rotating part (11). Then, the first camera (15) photographs the second battery (22) to generate a first image of the second battery (22).

[0088] As described above, the plurality of outer grippers (111), the plurality of inner grippers (121), and the plurality of pushers (14) are all of the same number, their positions correspond to each other, and are formed at equal intervals. If the plurality of outer grippers (111), the plurality of inner grippers (121), and the plurality of pushers (14) are all formed in fours, the plurality of outer grippers (111), the plurality of inner grippers (121), and the plurality of pushers (14) are formed at 90° intervals with respect to the central axis. Then, whenever the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate by 90°, the plurality of outer grippers (111) can alternately position themselves at each other's positions. And the plurality of batteries (2) move and are positioned one by one in a specific area at regular intervals. Accordingly, after the first outer gripper (1111) grips the first battery (21), when the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate 90°, the second battery (22) is placed on the upper surface of the second pusher (142), and the second outer gripper (1112) can grip the second battery (22) from the outside of the first rotating part (11). That is, whenever the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate 90°, new batteries (2) are placed one by one on the upper surface of the pusher (14), and one outer gripper (111) can grip the batteries (2) one by one.

[0089] FIG. 7 is a perspective view showing the second rotating part (12) rotating while the first inner gripper (1211) is gripping the first battery (21) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0090] As illustrated in FIG. 7, when the first inner gripper (1211) grips the first battery (21), the second rotating part (12) rotates until the first battery (21) reaches the position toward which the second camera (16) is facing. At this time, the first pusher (141) does not move upward or downward, but rotates together with the first battery (21) in a seated state. Then, the first battery (21) can move toward the position toward which the second camera (16) is facing without changing its height.

[0091] Meanwhile, when the first camera (15) generates a first image of the second battery (22), the second pusher (142) moves upward as shown in FIG. 7. As the second pusher (142) moves upward, it rotates around the rotation axis (A) to raise the second battery (22) placed on the upper surface, and the second battery (22) comes out of the second outer gripper (1112) and is raised by the second pusher (142).

[0092] FIG. 8 is a perspective view showing the first battery (21) reaching the position where the second camera (16) is facing in a secondary battery inspection device (1) according to one embodiment of the present invention, and FIG. 9 is a schematic diagram showing the view of FIG. 8 from above the second rotating part (12).

[0093] As illustrated in FIGS. 8 and 9, when the first inner gripper (1211) grips the first battery (21) and the second rotating part (12) rotates further so that the first battery (21) reaches the position where the second camera (16) is facing, the second camera (16) photographs the first battery (21) to generate a second image of the first battery (21). Although FIG. 8 shows the second camera (16) positioned above the shaft (13), the shaft (13) and the second camera (16) are not fixed to each other. That is, the second camera (16) can be fixed to a separate upper cover (not shown) that covers the secondary battery inspection device (1) from above. Therefore, while the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate around the rotation axis (A), the second camera (16) does not rotate. Additionally, as described above, at least one mirror (not shown) may be placed around the first battery (21), and the mirror may be placed at a specific angle of inclination with respect to the second camera (16). Accordingly, the third side (S3), part of the second side (S2), and part of the fourth side (S4) of the first battery (21) appear in the second image.

[0094] When the first image and the second image of the first battery (21) are generated, the first side (S1), the second side (S2), the third side (S3), and the fourth side (S4) of the first battery (21) all appear in the first image and the second image. Therefore, through the first image and the second image of the first battery (21), an external inspection of all outer surfaces of the first battery (21) can be performed and whether there is a defect can be determined.

[0095] Meanwhile, when the second pusher (142) moves upward, the second battery (22) comes out of the second outer gripper (1112) and rises toward the second inner gripper (1212) among the plurality of inner grippers (121). Then, when the second battery (22) reaches the second rotating part (12), as shown in FIGS. 8 and 9, the second inner gripper (1212) of the second rotating part (12) grips the second battery (22) from the inside of the second rotating part (12).

[0096] As described above, if a plurality of outer grippers (111), a plurality of inner grippers (121), and a plurality of pushers (14) are all formed in sets of four, the plurality of outer grippers (111), a plurality of inner grippers (121), and a plurality of pushers (14) are formed at intervals of 90° with respect to the central axis. Then, whenever the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate by 90°, the plurality of inner grippers (112) can alternately position themselves with each other. Accordingly, after the first inner gripper (1211) grips the first battery (21), when the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate 90°, the second battery (22) rises and reaches the second rotating part (12), and the second inner gripper (1212) grips the second battery (22) inside the second rotating part (12). That is, whenever the first rotating part (11), the second rotating part (12), the shaft (13), and the plurality of pushers (14) rotate 90°, the batteries (2) rise one by one and reach the second rotating part (12), and one inner gripper (121) can grip the batteries (2) one by one.

[0097] Meanwhile, when the second pusher (142) raises the second battery (22), as shown in FIG. 8, the third battery (23) among the plurality of batteries (2) is placed on the upper surface of the third pusher (143) among the plurality of pushers (14). Then, the third outer gripper (1113) among the plurality of outer grippers (111) grips the third battery (23) from the outside of the first rotating part (11). Then, the first camera (15) photographs the third battery (23) to generate a first image of the third battery (23).

[0098] FIG. 10 is a perspective view showing the first pusher (141) lowering the first battery (21) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0099] When the second camera (16) generates a second image of the first battery (21), the first pusher (141) moves downward as shown in FIG. 10. At this time, as the first pusher (141) moves downward, it rotates around the rotation axis (A) to lower the first battery (21) placed on the upper surface, and the first battery (21) comes out of the first inner gripper (1211) and is lowered by the pusher (14).

[0100] Meanwhile, when the second inner gripper (1212) grips the second battery (22), the second rotating part (12) rotates until the second battery (22) reaches the position toward which the second camera (16) is facing. At this time, the second pusher (142) does not move upward or downward, but rotates together with the second battery (22) in a seated state. Then, the second battery (22) can move toward the position toward which the second camera (16) is facing without changing its height.

[0101] Meanwhile, when the first camera (15) generates a first image of the third battery (23), the third pusher (143) moves upward as shown in FIG. 10. As the third pusher (143) moves upward, it rotates around the rotation axis (A) to raise the third battery (23) placed on the upper surface, and the third battery (23) comes out of the third outer gripper (1113) and is raised by the third pusher (143).

[0102] FIG. 11 is a perspective view showing the first battery (21) being gripped again by the first outer gripper (1111) of the first rotating part (11) in a secondary battery inspection device (1) according to one embodiment of the present invention.

[0103] When the first pusher (141) moves downward, the first battery (21) descends toward the first outer gripper (1111) of the first rotating part (11), as shown in FIG. 11. When the first battery (21) reaches the first rotating part (11) again, the first outer gripper (1111) grips the first battery (21) again. When the first pusher (141) moves further downward, the first battery (21) comes out of the first outer gripper (1111) again, and the visual inspection process for the first battery (21) is completed. Then, the first battery (21) moves to the next process line. In the next process, a plurality of batteries (2) can be sorted into good products or defective products depending on whether they are defective. Accordingly, the first battery (21) can also be sorted into good products or defective products depending on whether it is defective determined through the first image and the second image.

[0104] Meanwhile, when the second inner gripper (1212) grips the second battery (22) and the second rotating part (12) rotates further so that the second battery (22) reaches the position where the second camera (16) is facing, the second camera (16) photographs the second battery (22) to generate a second image of the second battery (22).

[0105] When the first image and the second image of the second battery (22) are generated, the first side (S1), the second side (S2), the third side (S3), and the fourth side (S4) of the second battery (22) all appear in the first image and the second image. Therefore, through the first image and the second image of the second battery (22), an external inspection of all outer surfaces of the second battery (22) can be performed and whether there is a defect can be determined.

[0106] Meanwhile, when the third pusher (143) moves upward, the third battery (23) comes out of the third outer gripper (1113) and rises toward the third inner gripper (1213) among the plurality of inner grippers (121). And when the third battery (23) reaches the second rotating part (12), as shown in FIG. 11, the third inner gripper (1213) of the second rotating part (12) grips the third battery (23) from the inside of the second rotating part (12).

[0107] Meanwhile, when the third pusher (143) raises the third battery (23), as shown in FIG. 11, the fourth battery (24) among the plurality of batteries (2) is placed on the upper surface of the fourth pusher (144) among the plurality of pushers (14). Then, the fourth outer gripper (1114) among the plurality of outer grippers (111) grips the fourth battery (24) from the outside of the first rotating part (11). Then, the first camera (15) photographs the fourth battery (24) to generate a first image of the fourth battery (24).

[0108] As described above, if a plurality of outer grippers (111), a plurality of inner grippers (121), and a plurality of pushers (14) are all formed in fours, the plurality of outer grippers (111), a plurality of inner grippers (121), and a plurality of pushers (14) are formed at 90° intervals with respect to the central axis. Accordingly, when the first battery (21) descends and reaches the first rotating part (11) again and the first outer gripper (1111) grips the first battery (21) again, the second rotating part (12) rotates with the second inner gripper (1212) gripping the second battery (22) so that the second battery (22) reaches the position where the second camera (16) is facing. That is, whenever the first rotating part (11), the second rotating part (12), the shaft (13) and the plurality of pushers (14) rotate 90°, the batteries (2) gripped by the inner gripper (121) can reach the position facing the second camera (16) one by one.

[0109] By repeatedly performing the above process for multiple batteries (2), first and second images can be generated for all batteries (2). Then, an external inspection of all batteries (2) can be performed using these first and second images. At this time, since the batteries (2) do not deviate from their correct positions, the error with the actual appearance can be reduced. In addition, since there is no need for the multiple batteries (2) to move and stop, the external inspection of the batteries (2) can be performed quickly, thereby saving time for the external inspection.

[0110] FIG. 12 is a perspective view showing a secondary battery inspection device (1a) according to a modified example of one embodiment of the present invention.

[0111] A secondary battery inspection device (1) according to one embodiment of the present invention has been described as having four of each of a plurality of outer grippers (111), a plurality of inner grippers (121), and a plurality of pushers (14). However, as described above, the number of the plurality of outer grippers (111), the plurality of inner grippers (121), and the plurality of pushers (14) can be formed in various numbers. That is, as shown in FIG. 12, a secondary battery inspection device (1a) according to a modified example of one embodiment of the present invention may have twelve of each of the plurality of outer grippers (111a), the plurality of inner grippers (121a), and the plurality of pushers (14a).

[0112] If a plurality of outer grippers (111a), a plurality of inner grippers (121a), and a plurality of pushers (14a) are all formed in 12 of each, the plurality of outer grippers (111a), a plurality of inner grippers (121a), and a plurality of pushers (14a) are formed at intervals of 30° with respect to the central axis. Then, whenever the first rotating part (11a), the second rotating part (12a), the shaft (13a), and the plurality of pushers (14a) rotate by 30°, the plurality of outer grippers (111a) can alternately position themselves with each other. And the plurality of batteries (2) move and are positioned one by one in a specific area at regular intervals. Accordingly, whenever the first rotating part (11a), the second rotating part (12a), the shaft (13a) and the plurality of pushers (14a) rotate by 30°, new batteries (2) are placed one by one on the upper surface of the pusher (14a), and one outer gripper (111a) can grip the batteries (2) one by one.

[0113] Additionally, whenever the first rotating part (11a), the second rotating part (12a), the shaft (13a), and the plurality of pushers (14a) rotate by 30°, the plurality of inner grippers (112a) can alternately position themselves with one another, so that the batteries (2) can reach the second rotating part (12a) one by one, and one inner gripper (121a) can grip the batteries (2) one by one.

[0114] Additionally, whenever the first rotating part (11a), the second rotating part (12a), the shaft (13a), and the plurality of pushers (14a) rotate by 30°, the batteries (2) gripped by the inner gripper (121) can reach the position facing the second camera (16) one by one.

[0115] In this way, when a plurality of outer grippers (111a), a plurality of inner grippers (121a), and a plurality of pushers (14a) are all formed in 12s, the external inspection process of the battery (2) can be performed more quickly and repeatedly than when they are formed in 4s.

[0116] FIG. 13 is a perspective view showing a first battery (21) being gripped by a first inner gripper (1211b) of a second rotating part (12b) in a secondary battery inspection device (1b) according to another embodiment of the present invention, and FIG. 14 is a schematic diagram showing the view of FIG. 13 from above the second rotating part (12b).

[0117] According to one embodiment of the present invention, the first rotating part (11) is located below the second rotating part (12), and the second rotating part (12) is located above the first rotating part (11). Thus, the first camera (15) first photographs the battery (2) gripped by the outer gripper (111) of the first rotating part (11), and then when the battery (2) reaches the second rotating part (12), the second camera (16) photographs the battery (2) gripped by the inner gripper (121) of the second rotating part (12).

[0118] However, according to another embodiment of the present invention, as shown in FIG. 13, the first rotating part (11b) is located above the second rotating part (12b), and the second rotating part (12b) is located below the first rotating part (11b). Then, while the inner gripper (121b) formed on the second rotating part (12b) is gripping the battery (2), the second camera (16b) photographs the battery (2). After that, the pusher (14b) raises the battery (2), and while the outer gripper (111b) formed on the first rotating part (11b) is gripping the battery (2), the first camera (15b) photographs the battery (2). By doing so, all outer surfaces of the battery (2) can be photographed.

[0119] Hereinafter, the operation of a secondary battery inspection device (1b) according to another embodiment of the present invention will be described in order with reference to each drawing. Here, descriptions of content that overlap with the secondary battery inspection device (1) according to one embodiment of the present invention will be omitted. Although it is described that a plurality of outer grippers (111b), a plurality of inner grippers (121b), and a plurality of pushers (14b) are all formed in fours, they are not limited thereto and can be formed in various numbers such as eight, twelve, etc., as long as the number of the plurality of outer grippers (111b), the plurality of inner grippers (121b), and the plurality of pushers (14b) is the same.

[0120] As illustrated in FIG. 13, the first battery (21) among the plurality of batteries (2) is placed on the upper surface of the first pusher (141b) among the plurality of pushers (14b). Then, as illustrated in FIG. 13 and FIG. 14, the first inner gripper (1211b) among the plurality of inner grippers (121b) grips the first battery (21) from the inside of the second rotating part (12b). Then, the second camera (16b) photographs the first battery (21) to generate a second image of the first battery (21). Although FIG. 13 shows the second camera (16b) positioned inside the shaft (13b), the shaft (13b) and the second camera (16b) are not fixed to each other. That is, the interior of the shaft (13b) is empty, providing a space for the second camera (16b) to be placed, and the second camera (16b) can be fixed to a separate upper cover (not shown) when the secondary battery inspection device (1b) is covered from above. Accordingly, while the first rotating part (11b), the second rotating part (12b), the shaft (13b), and the plurality of pushers (14b) rotate around the rotation axis (Ab), the second camera (16b) does not rotate.

[0121] Along the outer surface of the shaft (13b), a plurality of holes (17b) are formed at equal intervals at positions corresponding to a plurality of inner grippers (121b). Accordingly, whenever the shaft (13b) rotates and the plurality of inner grippers (121b) reach a position toward which the second camera (16b) is directed, the second camera (16b) can photograph the batteries (2) that the inner grippers (121b) are gripping through the holes (17b).

[0122] FIG. 15 is a perspective view showing the first pusher (141b) raising the first battery (21) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0123] When the second camera (16b) generates a second image of the first battery (21), the first pusher (141b) moves upward as shown in FIG. 15. As the first pusher (141b) moves upward, it rotates around the rotation axis (Ab) to raise the first battery (21) placed on the upper surface, and the first battery (21) comes out of the first inner gripper (1211b) and is raised by the first pusher (141b).

[0124] FIG. 16 is a perspective view showing a first battery (21) being gripped by a first outer gripper (1111b) of a first rotating part (11b) in a secondary battery inspection device (1b) according to another embodiment of the present invention, and FIG. 17 is a schematic view showing the appearance of FIG. 16 from above the first rotating part (11b).

[0125] When the first pusher (141b) moves upward, the first battery (21) comes out of the first inner gripper (1211b) and rises toward the first outer gripper (1111b) among the plurality of outer grippers (111b). And when the first battery (21) reaches the first rotating part (11b), as shown in FIGS. 16 and 17, the first outer gripper (1111b) of the first rotating part (11b) grips the first battery (21) from the outside of the first rotating part (11b).

[0126] Meanwhile, when the first pusher (141b) raises the first battery (21), as shown in FIG. 16, the second battery (22) among the plurality of batteries (2) is placed on the upper surface of the second pusher (142b) among the plurality of pushers (14b). Then, the second inner gripper (1212b) among the plurality of inner grippers (121b) grips the second battery (22) from the inside of the second rotating part (12b). Then, the second camera (16b) photographs the second battery (22) to generate a second image of the second battery (22).

[0127] FIG. 18 is a perspective view showing the first rotating part (11b) rotating while the first outer gripper (1111b) is gripping the first battery (21) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0128] As illustrated in FIG. 18, when the first outer gripper (1111b) grips the first battery (21), the first rotating part (11b) rotates until the first battery (21) reaches the position toward which the first camera (15b) is facing. At this time, the first pusher (141b) does not move upward or downward, but rotates together with the first battery (21) in a seated state. Then, the first battery (21) can move toward the position toward which the first camera (15b) is facing without changing its height.

[0129] Meanwhile, when the second camera (16b) generates a second image of the second battery (22), the second pusher (142b) moves upward as shown in FIG. 18. As the second pusher (142b) moves upward, it rotates around the rotation axis (Ab) to raise the second battery (22) placed on the upper surface, and the second battery (22) comes out of the second inner gripper (1212b) and is raised by the second pusher (142b).

[0130] FIG. 19 is a perspective view showing the first battery (21) reaching the position where the first camera (15b) is facing in a secondary battery inspection device (1b) according to another embodiment of the present invention, and FIG. 20 is a schematic diagram showing the view of FIG. 19 from above the first rotating part (11b).

[0131] As illustrated in FIGS. 19 and 20, when the first outer gripper (1111b) grips the first battery (21) and the first rotating part (11b) rotates further so that the first battery (21) reaches a position where the first camera (15b) is facing, the first camera (15b) photographs the first battery (21) to generate a first image of the first battery (21).

[0132] When the first image and the second image of the first battery (21) are generated, the first side (S1), the second side (S2), the third side (S3), and the fourth side (S4) of the first battery (21) all appear in the first image and the second image. Therefore, through the first image and the second image of the first battery (21), an external inspection of all outer surfaces of the first battery (21) can be performed and whether there is a defect can be determined.

[0133] Meanwhile, when the second pusher (142b) moves upward, the second battery (22) comes out of the second inner gripper (1212b) and rises toward the second outer gripper (1112b) among the plurality of outer grippers (111b). And when the second battery (22) reaches the first rotating part (11b), as shown in FIGS. 19 and 20, the second outer gripper (1112b) of the first rotating part (11b) grips the second battery (22) from the outside of the first rotating part (11b).

[0134] Meanwhile, when the second pusher (142b) raises the second battery (22), as shown in FIG. 19, the third battery (23) among the plurality of batteries (2) is placed on the upper surface of the third pusher (143b) among the plurality of pushers (14b). Then, the third inner gripper (1213b) among the plurality of inner grippers (121b) grips the third battery (23) from the inside of the second rotating part (12b). Then, the second camera (16b) photographs the third battery (23) to generate a second image of the third battery (23).

[0135] FIG. 21 is a perspective view showing the first pusher (141b) lowering the first battery (21) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0136] When the first camera (15b) generates a first image of the first battery (21), the first pusher (141b) moves downward as shown in FIG. 21. At this time, as the first pusher (141b) moves downward, it rotates around the rotation axis (Ab) to lower the first battery (21) placed on the upper surface, and the first battery (21) comes out of the first outer gripper (1111b) and is lowered by the pusher (14b).

[0137] Meanwhile, when the second outer gripper (1112b) grips the second battery (22), the first rotating part (11b) rotates until the second battery (22) reaches the position toward which the first camera (15b) is facing. At this time, the second pusher (142b) does not move upward or downward, but rotates together with the second battery (22) in a seated state. Then, the second battery (22) can move toward the position toward which the first camera (15b) is facing without changing its height.

[0138] Meanwhile, when the second camera (16b) generates a second image of the third battery (23), the third pusher (143b) moves upward as shown in FIG. 21. As the third pusher (143b) moves upward, it rotates around the rotation axis (Ab) to raise the third battery (23) placed on the upper surface, and the third battery (23) comes out of the third inner gripper (1213b) and is raised by the third pusher (143b).

[0139] FIG. 22 is a perspective view showing the first battery (21) being gripped again by the first inner gripper (1211b) of the second rotating part (12b) in a secondary battery inspection device (1b) according to another embodiment of the present invention.

[0140] When the first pusher (141b) moves downward, the first battery (21) descends toward the first inner gripper (1211b) of the second rotating part (12b), as shown in FIG. 22. When the first battery (21) reaches the second rotating part (12b) again, the first inner gripper (1211b) grips the first battery (21) again. When the first pusher (141b) moves further downward, the first battery (21) comes out of the first inner gripper (1211b) again, and the visual inspection process for the first battery (21) is completed. Then, the first battery (21) moves to the next process line. In the next process, a plurality of batteries (2) can be sorted into good products or defective products depending on whether they are defective. Accordingly, the first battery (21) can also be sorted into good products or defective products depending on whether it is defective determined through the first image and the second image.

[0141] Meanwhile, when the second outer gripper (1112b) grips the second battery (22) and the first rotating part (11b) rotates further so that the second battery (22) reaches the position where the first camera (15b) is facing, the first camera (15b) photographs the second battery (22) to generate a first image of the second battery (22).

[0142] When the first image and the second image of the second battery (22) are generated, the first side (S1), the second side (S2), the third side (S3), and the fourth side (S4) of the second battery (22) all appear in the first image and the second image. Therefore, through the first image and the second image of the second battery (22), an external inspection of all outer surfaces of the second battery (22) can be performed and whether there is a defect can be determined.

[0143] Meanwhile, when the third pusher (143b) moves upward, the third battery (23) comes out of the third inner gripper (1213b) and rises toward the third outer gripper (1113b) among the plurality of outer grippers (111b). And when the third battery (23) reaches the first rotating part (11b), as shown in FIG. 22, the third outer gripper (1113b) of the first rotating part (11b) grips the third battery (23) from the outside of the first rotating part (11b).

[0144] Meanwhile, when the third pusher (143b) raises the third battery (23), as shown in FIG. 22, the fourth battery (24) among the plurality of batteries (2) is placed on the upper surface of the fourth pusher (144b) among the plurality of pushers (14b). Then, among the plurality of inner grippers (121b), the fourth inner gripper (1214b) grips the fourth battery (24) from the inside of the second rotating part (12b). Then, the second camera (16b) photographs the fourth battery (24) to generate a second image of the fourth battery (24).

[0145] By repeatedly performing the above process for multiple batteries (2), first and second images can be generated for all batteries (2). Then, an external inspection of all batteries (2) can be performed using these first and second images. At this time, since the batteries (2) do not deviate from their correct positions, the error with the actual appearance can be reduced. In addition, since there is no need for the multiple batteries (2) to move and stop, the external inspection of the batteries (2) can be performed quickly, thereby saving time for the external inspection.

[0146] A person skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and various embodiments derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention.

Claims

1. A first rotating part having a plurality of outer grippers that grip the battery from the outside, formed outwardly at equal intervals along the outer surface; A second rotating part having a plurality of inner grippers formed facing inward at equal intervals along the inner surface for gripping the battery from the inside; A shaft positioning the first rotating part and the second rotating part at different heights; A plurality of pushers that move upward and downward and raise and lower the battery; A first camera located outside the first rotating part, facing one of the outer grippers, and capturing the battery gripped by the outer gripper to generate a first image; and It includes a second camera located inside the second rotating part, facing one of the inner grippers, and capturing the battery gripped by the inner gripper to generate a second image, The first rotating part, the second rotating part, and the shaft are, They all share the same central axis, and the said central axis becomes the axis of rotation and rotates around the said axis of rotation, and The above plurality of pushers are, A secondary battery inspection device that rotates around the rotation axis together with the first rotating part, the second rotating part, and the shaft.

2. In Paragraph 1, The first rotating part, the second rotating part, the shaft, and the pusher are, A secondary battery inspection device rotating at the same angular velocity.

3. In Paragraph 1, The plurality of outer grippers, the plurality of inner grippers, and the plurality of pushers are, Secondary battery inspection device with all identical numbers.

4. In Paragraph 3, The plurality of outer grippers, the plurality of inner grippers, and the plurality of pushers are, A secondary battery inspection device in which all positions correspond to each other.

5. In Paragraph 1, The above first rotating part is, A secondary battery inspection device located below the second rotating part above.

6. In Paragraph 5, When a first battery among the plurality of batteries is placed on the upper surface of a first pusher among the plurality of pushers, and a first outer gripper among the plurality of outer grippers grips the first battery from the outside of the first rotating part, The first camera mentioned above is, A secondary battery inspection device that photographs the first battery to generate a first image.

7. In Paragraph 6, When the first camera generates the first image of the first battery, A secondary battery inspection device in which the first pusher rotates around the rotation axis and raises the first battery toward the first inner gripper among the plurality of inner grippers.

8. In Paragraph 7, When the first inner gripper grips the first battery, The above second rotating part is, A secondary battery inspection device that rotates until the first battery reaches the position where the second camera is facing.

9. In Paragraph 8, When the first battery reaches the position where the second camera is facing, The second camera mentioned above is, A secondary battery inspection device that photographs the first battery and generates a second image.

10. In Paragraph 7, When the first pusher raises the first battery, A secondary battery inspection device in which a second battery among the plurality of batteries is seated on the upper surface of a second pusher among the plurality of pushers, and a second outer gripper among the plurality of outer grippers grips the second battery.

11. In Paragraph 1, The above second rotating part is, A secondary battery inspection device located below the first rotating part above.

12. In Paragraph 11, When a first battery among the plurality of batteries is placed on the upper surface of a first pusher among the plurality of pushers, and a first inner gripper among the plurality of inner grippers grips the first battery from the inside of the second rotating part, The second camera mentioned above is, A secondary battery inspection device that photographs the first battery and generates a second image.

13. In Paragraph 12, When the second camera generates the second image of the first battery, A secondary battery inspection device in which the first pusher rotates around the rotation axis and raises the first battery toward the first outer gripper among the plurality of outer grippers.

14. In Paragraph 13, When the first outer gripper grips the first battery, The above first rotating part is, A secondary battery inspection device that rotates until the first battery reaches the position where the first camera is facing.

15. In Paragraph 14, When the first battery reaches the position where the first camera is facing, The first camera mentioned above is, A secondary battery inspection device that photographs the first battery to generate a first image.

16. In Paragraph 13, When the first pusher raises the first battery, A secondary battery inspection device in which a second battery among the plurality of batteries is seated on the upper surface of a second pusher among the plurality of pushers, and a second inner gripper among the plurality of inner grippers grips the second battery.

Images