CN-121994814-A - Cylindrical battery product inner surface shooting device with tilting reflector

Abstract

The cylindrical battery product inner surface photographing apparatus of the tilting mirror according to an embodiment of the present invention may include a conveying module for conveying a cylindrical battery product having an open upper surface and in an upright posture to a photographing position, a camera module located above the photographing position for photographing the cylindrical battery product conveyed to the photographing position, and an inner surface reflecting mirror module located between the photographing position and the camera module for presenting an inner surface of the cylindrical battery product.

Inventors

• JIN CHENGQI
• LIU ZHIMAN
• Jia Renhao
• CUI XIANGZHEN

Assignees

• ENSCAPE有限公司

Dates

Publication Date

20260508

Application Date

20251105

Priority Date

20241105

Claims (9)

1. 1. A cylindrical battery product inner surface photographing apparatus of a tiltable mirror, comprising: a conveying module for conveying the cylindrical battery product with the upper surface open and in an upright posture to a photographing position; A camera module above the photographing position for photographing the cylindrical battery product transferred to the photographing position, and An inner surface reflecting mirror module located between the photographing position and the camera module for presenting an inner surface of the cylindrical battery product, The inner surface reflection mirror module includes: A plurality of reflecting mirrors arranged centering on a height axis perpendicular to the photographing position, and And the reflector angle regulator is used for regulating the angle formed by each reflector relative to the height axis.
2. 2. The tilting mirror's cylindrical battery product interior surface camera of claim 1, Each of the reflecting mirrors has an inclined shape protruding toward the height axis as approaching the lower end.
3. 3. The tilting mirror's cylindrical battery product interior surface camera of claim 2, The mirror angle adjuster is configured to adjust each of the mirrors from a first angle to a second angle or from the second angle to the first angle when the cylindrical battery product is conveyed to the photographing position, The first angle is an angle that causes the mirror to present a lower end of the inner surface of the cylindrical battery product, and the second angle is an angle that causes the mirror to present an upper end of the inner surface of the cylindrical battery product.
4. 4. The tilting mirror's cylindrical battery product inner surface photographing device according to claim 3, further comprising: A sensing sensor for sensing the cylindrical battery product delivered to the photographing position.
5. 5. The tilting mirror's cylindrical battery product interior surface camera of claim 1, further comprising: and the lifting module is used for changing the relative distance between the reflecting mirror module for reflecting the inner surface and the conveying module.
6. 6. The tilting mirror's cylindrical battery product interior surface camera as recited in claim 5, wherein, The lifting module comprises a workbench, wherein the workbench is used for placing the cylindrical battery product positioned at the shooting position and can be lifted.
7. 7. The tilting mirror's cylindrical battery product interior surface camera as recited in claim 5, wherein, The lift module includes a mirror lift actuator for adjusting a height of the inner surface reflective mirror module.
8. 8. The tilting mirror's cylindrical battery product interior surface camera of claim 7, The lift module further includes a camera lift driver for adjusting a height of the camera module.
9. 9. The tilting mirror's cylindrical battery product interior surface camera of claim 1, further comprising: And a coaxial illumination module disposed between the inner surface reflection mirror module and the camera module, for radiating light in a direction coaxial with a photographing direction of the camera module.

Description

Cylindrical battery product inner surface shooting device with tilting reflector Technical Field The application relates to a cylindrical battery product inner surface shooting device with a tilting mirror. The application relates to a product of 'material part technology development (R & D)' which is a main pipe of Korean industrial technology planning and evaluation institute (novel generation 4680-46200 cylindrical battery detection/measurement integrated optical instrument and AI visual detection system development, subject number: RS-2024-00418621). Background The secondary battery is a battery capable of converting chemical energy into electrical energy to supply power to the outside, and, after discharging, receiving an external power source and converting the electrical energy into chemical energy to store. With the development of electronic devices, secondary batteries are applied to various devices in various fields. Such secondary batteries are being produced in various forms, and as one of the various forms, cylindrical batteries have been conventionally used, and have been widely used. Cylindrical batteries with surface defect elements such as pits, scratches, dirt and the like are classified as defective products and discarded before final offline, so that the risk of safety accidents caused by the defect elements is eliminated in advance. Thus, battery manufacturers may visually inspect cylindrical batteries to classify defective cylindrical batteries in advance before final delivery. Recently, as the amount of electricity required for electronic devices increases, cylindrical batteries have a tendency to be gradually enlarged. Specifically, cells increased in diameter to about 46mm and lengthened in length to 80mm to 130mm have emerged. In the surface inspection of the large-sized cylindrical battery, the inspection of the inner surface has greater difficulty than the outer surface. Specifically, in the related art, a camera is disposed on an inner surface of a cylindrical battery at a predetermined distance from the cylindrical battery, and a mirror for presenting the inner surface is disposed on an optical path of the camera, and in this state, photographing is performed so that the cylindrical battery moves with respect to the camera. Therefore, when the length of the cylindrical battery is lengthened, the set height of the camera is increased, and the distance for lifting and lowering the battery is also lengthened, and thus, the total size of the optical instrument is also increased. In addition, since the length of the cylindrical battery product increases, the lower end of the cylindrical battery product is positioned deeper, and thus, in order to photograph the lower end of the inner surface, the angle of the reflecting mirror needs to be almost perpendicular. Such an angle of the mirror narrows a viewing angle for detecting a defect at the lower end portion of the inner surface, so that the defect is displayed on the measured image in a reduced manner, and eventually constitutes an element that reduces the detection performance of the defect. However, in order to photograph the lower end portion of the inner surface, the angle of the mirror has to be maintained as described above, and therefore, the conventional inner surface is photographed in such a manner as to appear from the upper end to the lower end of the inner surface using a mirror inclined in an almost vertical manner. Disclosure of Invention Technical problem The present invention aims to solve the technical problem of providing an optical system capable of minimizing a volume change of an optical instrument and maintaining a detection performance for a cylindrical battery product of a high aspect ratio (ratio of length to diameter) at or above a prescribed level. Further, the present invention is directed to solving the technical problem of providing an optical system capable of photographing an image at an optimal angle according to different heights of an inner surface based on adjusting an angle of a reflecting mirror. The technical problems of the present invention are not limited to the above-described technical problems, and a person skilled in the art can clearly understand a plurality of other technical problems not mentioned from the following description. Technical proposal An inner surface photographing device of a cylindrical battery product of a tiltable mirror according to an embodiment of the present invention for solving the above-described technical problems may include a conveying module for conveying a cylindrical battery product in an open upper surface and upright posture to a photographing position, a camera module located above the photographing position for photographing the cylindrical battery product conveyed to the photographing position, and an inner surface reflecting mirror module located between the photographing position and the camera module for presenting an inner surface of the cylindr