CN115508383A - Shell appearance detection method and device - Google Patents
Shell appearance detection method and device Download PDFInfo
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- CN115508383A CN115508383A CN202211201622.1A CN202211201622A CN115508383A CN 115508383 A CN115508383 A CN 115508383A CN 202211201622 A CN202211201622 A CN 202211201622A CN 115508383 A CN115508383 A CN 115508383A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N21/954—Inspecting the inner surface of hollow bodies, e.g. bores
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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Abstract
The application provides a shell appearance detection method and a device, which are applied to shell appearance detection with one or more side openings, wherein the method comprises the following steps: the method comprises the steps of extending a first image acquisition device into a shell along an opening of the shell, and enabling the first image acquisition device and the shell to rotate relatively to acquire a first image of the side wall inside the shell. In this embodiment, through stretching into the casing inside with first image acquisition device along the opening of casing and carrying out local image acquisition, simultaneously, can also make first image acquisition device can obtain the image of casing internal perisporium through rotatory first image acquisition device, can realize the battery inner wall and detect the full coverage, improve battery case detection's rate of accuracy and detection efficiency.
Description
Technical Field
The application belongs to the technical field of battery manufacturing equipment, and particularly relates to a shell appearance detection method and device.
Background
In the related art, in the detection of the battery shell, only the detection of the shell exterior is usually involved, for example, a patent granted in CN 110487807A-visual detection device and method for appearance defects of a dry battery zinc cylinder discloses the detection of the shell exterior of the battery; however, in the prior art, it is difficult to detect the inside of a battery case having a narrow diameter, and therefore, the detection of the inside of the case has not been applied to a production line in the industry. However, defects such as scratches and depressions also exist in the shell, so that great potential safety hazards are caused in the process of factory use of the battery.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the application provides a shell appearance detection method and device, which can not only acquire images of the interior of a shell through various schemes and realize detection in a narrow-mouth shell, but also creatively detect the interior of a battery shell in the field of new energy batteries, thereby improving the comprehensiveness of detection of the battery shell and reducing the potential safety hazard of battery use.
In a first aspect, an embodiment of the present application provides a casing appearance detection method, which is applied to casing appearance detection with one or more openings, and the method includes: the method comprises the steps of extending a first image acquisition device into a shell along an opening of the shell, and enabling the first image acquisition device and the shell to rotate relatively to acquire a first image of the side wall in the shell. In this embodiment, stretch into the casing through the opening with first image acquisition device along the casing inside and carry out local image acquisition, simultaneously, can also make first image acquisition device can obtain the image of casing internal perisporium through rotatory first image acquisition device, can realize having accomplished the battery inner wall and detect the complete coverage, improve battery case detection's rate of accuracy and detection efficiency.
In some embodiments, a first image acquisition mechanism is arranged on one side of the first image acquisition device; the first image acquisition device or the shell stretches and retracts and rotates under the driving of the driving source, so that the first image acquisition mechanism acquires a first image from the side wall in the shell. In this embodiment, when the length of the first image capturing mechanism is greater than or equal to the length of the side wall inside the housing, the first image capturing mechanism can directly capture images when extending into the housing. When first image acquisition mechanism length is less than the inside lateral wall length of casing, the flexible function of the first image acquisition device of accessible divides a plurality of regions with the casing is inside, carries out image acquisition in the casing region of difference in proper order through first image acquisition mechanism.
In some embodiments, the housing interior demarcates a plurality of acquisition regions; one side of the first image acquisition device is provided with a first image acquisition mechanism which sequentially takes pictures in a rotating manner in the acquisition area, or one side of the first image acquisition device is provided with a plurality of first image acquisition mechanisms which respectively take pictures in a rotating manner in the acquisition area.
In some implementations, the free end of the first image acquisition device is further provided with a second image acquisition mechanism, and in the process that the first image acquisition device extends into the shell, the image of the opening of the shell, the image of the bottom of the inner side of the shell and the image of the edge of the bottom of the shell, and the image of the side wall of the interior of the shell are acquired in sequence.
In some implementations, before or after the extending the first image capturing device into the interior of the housing at the opening of the housing, further comprising: and arranging the first image acquisition devices adjacently on the peripheral wall of the shell, and rotating the first image acquisition mechanism or the shell to acquire a second image of the peripheral wall of the shell.
In some embodiments, when the first image capturing device extends into the interior of the housing at the opening of the housing, the method further includes: and adjacently arranging a second image acquisition device outside the shell, and rotating the second image acquisition device or the shell to acquire a second image outside the shell.
In some embodiments, before or after the extending the first image capturing device into the interior of the housing at the opening of the housing, the method further comprises: and moving the shell to a third image acquisition device, and acquiring any one or more third images of the inner bottom and the bottom edge of the shell, the outer bottom of the shell and the shell opening of the shell by the third image acquisition device.
In a second aspect, an embodiment of the present application further provides an apparatus, where the apparatus is provided with a control program for executing the above casing appearance detection method, and includes a first image acquisition device, where the first image acquisition device is configured to extend into the casing along an opening of the casing and rotate relative to the casing to acquire a first image of the inside of the casing. In this embodiment, stretch into the casing through the opening with first image acquisition device along the casing inside and carry out local image acquisition, simultaneously, can also make first image acquisition device can obtain the image of casing internal perisporium through rotatory first image acquisition device, can realize having accomplished the battery inner wall and detect the complete coverage, improve battery case detection's rate of accuracy and detection efficiency.
In some embodiments, the first image capturing device is a contact image sensor, the first image capturing device is a cylinder structure disposed along the bottom of the housing from the opening of the housing, and a contact type photosensitive element is disposed on one side of the first image capturing device; the first image acquisition device or the shell is driven by the driving source to stretch and rotate, so that the contact type photosensitive element acquires a first image from the inner side wall of the shell.
In some embodiments, the first image acquisition device is an endoscope assembly including a drive rod, and at least one first camera disposed at the drive rod; the driving rod or the shell is driven by the driving source to stretch and rotate, so that the first camera acquires a first image from the side wall in the shell.
In some embodiments, the bottom of the inner side of the shell to the opening is divided into at least a first area and a second area; the number of the first cameras is one, and the first cameras are arranged on one side of the end part of the driving rod;
the first camera is driven by the driving rod to rotate in the first area and the second area in sequence to take pictures so as to acquire a first image of the side wall in the shell.
In some embodiments, the bottom of the inner side of the shell to the opening is divided into at least a first area and a second area; first camera quantity is at least two, two first camera equidistance sets up actuating lever one side, and two first camera rotates the photograph to first region, second area respectively, acquires the first image of the inside lateral wall of casing.
In some embodiments, the end of the driving rod is further provided with a second camera, and the second camera is used for acquiring an image of the bottom of the inner side of the shell.
In some embodiments, further comprising: and the second image acquisition device is used for being adjacently arranged outside the shell and rotationally photographing the outer side of the shell to acquire a second image of the outer side of the shell.
In some embodiments, further comprising: the third image acquisition device is used for acquiring any one or more third images of the inner bottom and the bottom edge of the shell, the outer bottom of the shell and the shell opening of the shell.
In some embodiments, the apparatus further comprises a displacement device for moving the housing, and the first image acquisition device, the second image acquisition device and the third image acquisition device are arranged along the displacement device.
The technical scheme of the embodiment of the application includes but is not limited to the following technical effects: the method comprises the steps that a first image acquisition device extends into a shell to acquire an inner side image of the shell, a second image acquisition device and the outer side of the shell perform relative rotation photographing to acquire an outer side image of the shell, and a third image acquisition device acquires any one or more images of the inner bottom and the bottom edge of the shell, the outer bottom of the shell and a shell opening of the shell; thereby realize that the casing outward appearance detects entirely, can effectively detect defects such as the arch of casing surface, sunken, mar, realize that the casing detects the full coverage, improved the rate of accuracy and the yields that the casing detected. And then the yield of casing production has been improved, the potential safety hazard that the reduction casing brought because of the defect.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter and not to limit the subject matter.
Fig. 1 is a schematic diagram of a first image capturing device and a second image capturing device provided in an embodiment of the present application for capturing an image of a housing;
FIG. 2 is a first schematic structural diagram of a first image capturing device according to an embodiment of the present disclosure;
FIG. 3 is a first image obtaining apparatus for obtaining a first image according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a first image capturing apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a first image acquisition device according to an embodiment of the present application;
FIG. 6 is a diagram illustrating a second image capturing device capturing a second image according to an embodiment of the present application;
FIG. 7 is a first schematic structural diagram of a third image capturing device according to an embodiment of the present disclosure;
FIG. 8 is a first schematic diagram of a third image capture device according to another embodiment of the present application;
fig. 9 is a schematic structural diagram of a third image capturing device according to an embodiment of the present application;
FIG. 10 is a second schematic diagram of a third image capturing device according to an embodiment of the present application;
fig. 11 is a schematic structural diagram of a third image capturing device according to an embodiment of the present application;
fig. 12 is a third schematic image of a third image capturing device according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and are only for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, it is to be understood that the positional descriptions, such as the directions of up, down, front, rear, left, right, etc., referred to herein are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present application.
In the description of the present application, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, smaller, inner, etc. are understood as including the present number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.
In the description of the present application, unless otherwise expressly limited, terms such as set, mounted, connected and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the terms in the present application by combining the detailed contents of the technical solutions.
In some cases, for example, patent granted "CN 110487807A-visual inspection device and method for visual inspection of appearance defects of dry battery zinc cans", which discloses external inspection of battery cases; however, in the prior art, it is difficult to detect the inside of a battery case having a narrow diameter, and therefore, the detection of the inside of the case is not applied to a production line in the industry. However, the inside of the shell also has the defects of scratches, depressions and the like, so that great potential safety hazards are caused in the process of factory use of the battery.
Based on the above situation, an embodiment of the present application provides a shell appearance detection method, which is applied to shell appearance detection with one or more openings, and the method includes: the first image acquisition device extends into the shell along the opening of the shell, and the first image acquisition device and the shell rotate relatively to acquire a first image of the side wall in the shell. In this embodiment, stretch into the casing through the opening with first image acquisition device along the casing inside and carry out local image acquisition, simultaneously, can also make first image acquisition device can obtain the image of casing internal perisporium through rotatory first image acquisition device, can realize having accomplished the battery inner wall and detect the complete coverage, improve battery case detection's rate of accuracy and detection efficiency.
In an embodiment of the above method for detecting an appearance of a housing, a first image capturing mechanism is disposed on one side of the first image capturing device; the first image acquisition device stretches out and draws back and rotates under the drive of the drive source, so that the first image acquisition mechanism acquires a first image from the side wall in the shell. In this embodiment, the first image capturing device is a contact image sensor, the first image capturing device is a cylinder structure disposed along the bottom of the housing from the opening of the housing, and a contact photosensitive element is disposed on one side of the first image capturing device, and the contact photosensitive element is a first image capturing mechanism; the first image acquisition device is driven by the driving source to stretch and rotate, so that the contact type photosensitive element acquires a first image from the inner side wall of the shell. Referring to fig. 1 to 3, the first image capturing device 200 protrudes into the housing 100 for detection, wherein the housing and the first image capturing device may have any shape such as a circular shape, a square shape, a hexagonal shape, and the like in cross section, in this example, a circular housing and a cylindrical first image capturing device are used as an example, referring to fig. 2, the first image capturing device includes a contact image sensor 210 and a contact photosensitive element 211 disposed on one side of the contact image sensor 210, and the contact driving device may be driven by a driving source such as an air cylinder and a motor to achieve telescopic and rotary actions. The contact image sensor 210 has one end with a diameter smaller than the inner diameter of the housing such that the contact image sensor 210 is provided with a contact type photosensitive element 211 disposed to be extendable into the housing. Meanwhile, a light-emitting source may be disposed on one side of the contact type photosensitive element 211, and the light-emitting source may be disposed adjacent to the contact type photosensitive element 211, so as to improve an image effect obtained by the contact type photosensitive element 211. After the contact image sensor 210 extends into the housing, the contact photosensitive element 211 performs image acquisition along the inside of the housing, and can rotate 360 degrees under the driving of the rotating motor, and during rotation, full scanning or full coverage framing of the inner wall of the housing is realized, so that image acquisition inside the housing is realized. Referring to fig. 3, fig. 3 is a first image obtained by the first image obtaining device, where the first image is an image of an inner wall of the housing, and defects such as scratches and depressions inside the housing can be clearly obtained by the first image obtaining device. In addition, the present application may also connect the housing to the driving source, and the first image capturing device may capture the image of the housing sidewall by rotating the housing 100 along the central axis of the housing.
In an implementation manner of the foregoing embodiment, when the length of the first image capturing mechanism is greater than or equal to the length of the side wall inside the housing, the first image capturing mechanism can directly capture an image when the first image capturing mechanism can extend into the housing. When first image acquisition mechanism length is less than the inside lateral wall length of casing, the flexible function of the first image acquisition device of accessible divides a plurality of regions with the casing is inside, carries out image acquisition in the casing region of difference in proper order through first image acquisition mechanism.
In an embodiment of the above method for detecting the appearance of the housing, the housing is internally divided into a plurality of collecting areas; one side of the first image acquisition device is provided with a first image acquisition mechanism which sequentially takes pictures in a rotating manner in the acquisition area, or one side of the first image acquisition device is provided with a plurality of first image acquisition mechanisms which respectively take pictures in a rotating manner in the acquisition area.
In one implementation of the above embodiment, the first image acquisition device is an endoscope assembly, and the endoscope assembly includes a driving rod and at least one first camera disposed on the driving rod; the driving rod stretches out and draws back and rotates under the drive of driving source, makes first camera acquire the inside lateral wall of casing and acquires first image. In this embodiment, the actuating lever can be driven by driving sources such as cylinder, motor, makes the actuating lever stretch out and draw back, action such as rotation, and first camera is connected in actuating lever one side, see fig. 4, and first camera setting is on actuating lever 222, and the actuating lever is provided with first camera one end and stretches into the casing inboard, shoots the casing inboard through first camera, and simultaneously, the actuating lever can rotate the setting, makes first camera can follow the casing internal periphery rotation and shoot. In addition, the shell can be connected with the driving source, the shell can rotate along the central axis of the shell, and the first camera can acquire images of the side wall in the shell.
In one implementation manner of the above embodiment, the bottom of the inner side of the shell is divided into at least a first area and a second area from the opening; the number of the first cameras is one, and the first cameras are arranged on one side of the end part of the driving rod; the first camera is driven by the driving rod to rotate and photograph in the first area and the second area in sequence, and a first image of the side wall inside the shell is acquired. Referring to fig. 4, the interior of the housing may be divided into a first region 110, a second region 120, and a third region 130; the first camera can be driven by the driving rod to collect images in the first area, the second area and the third area in a segmented mode.
In one implementation manner of the above embodiment, the bottom of the inner side of the shell is divided into at least a first area and a second area from the opening; first camera quantity is at least two, and two first camera equidistance settings are in actuating lever one side, and just two first cameras rotate respectively first region, second region and shoot, acquire the first image of the inside lateral wall of casing. In this embodiment, the same number of first cameras as the number of the first cameras in the inner area of the housing can be arranged according to the size of the viewing area, as in the embodiment shown in fig. 5, the viewing width of the first camera 221 in this embodiment is the width of the first area 110, so that the driving rod can be arranged at three first cameras, and the three first cameras are respectively arranged along the first area 110, the second area 120 and the third area 130, and when the driving rod rotates, images of the first area 110, the second area 120 and the third area 130 can be simultaneously acquired. In one implementation of the above embodiment, the end of the driving rod 222 is further provided with a second camera 223, and the second camera 223 is used for acquiring the bottom image inside the casing. Referring to fig. 5, a second camera may be provided at an end of the driving lever 222 for acquiring an edge image of the bottom inside the casing 100 and the contact of the bottom inside the casing 100 with the side wall. The method has the advantages that the edge image is obtained for detection, the blind area of the connecting part of the side wall and the bottom of the shell can be eliminated, and the detection accuracy of the interior of the shell is improved. The photographing angle of the second camera 223 is perpendicular to that of the first camera 221, the second camera 223 can acquire images in the process that the driving rod extends into the shell, and the driving rod can acquire images in the process that the driving rod extends into the shell.
In an implementation manner of the foregoing embodiment, a second image capturing mechanism is further disposed at a free end of the first image capturing device, and in a process that the first image capturing device extends into the casing, an image of an opening of the casing, images of the bottom and edges of the inner side of the casing, and images of the sidewall of the inside of the casing are sequentially captured. In this embodiment, the first image acquisition device can be driven by the driving source to stretch into the casing along the inside of the casing, and in the process of stretching into the inside of the casing, image acquisition is sequentially performed on the opening of the casing, the bottom edge of the inner side and the bottom edge of the inner side of the casing, and the image acquisition mechanism acquires images of the side wall of the inside of the casing, and the second image acquisition mechanism acquires images of the opening of the casing, the bottom edge of the inner side of the casing and images of the bottom edge of the inner side of the casing.
In an implementation manner of the foregoing embodiment, before or after the extending the first image capturing device into the interior of the housing at the opening of the housing, the method further includes: and arranging the first image acquisition devices adjacently on the peripheral wall of the shell, and rotating the first image acquisition mechanism or the shell to acquire a second image of the peripheral wall of the shell. This application also can gather the image of the periphery wall of casing through first image acquisition mechanism, acquires the second image in the casing outside.
In some embodiments, when the first image capturing device extends into the interior of the housing at the opening of the housing, the method further comprises: and adjacently arranging a second image acquisition device outside the shell, and rotating the second image acquisition device or the shell to acquire a second image of the peripheral wall of the shell. In this embodiment, this application can pass through second image acquisition device for adjacent setting is outside the casing to rotate and shoot the casing periphery wall, acquire the second image of casing periphery wall. Specifically, the image of the peripheral wall of the housing may be acquired by the second image acquisition device while the first image acquisition device acquires the image of the inside of the housing. The image acquisition of the peripheral wall of the housing by the second image acquisition device may be performed before or after the image acquisition of the interior of the housing by the first image acquisition device. In this embodiment, an example is enumerated in which the first image acquiring device acquires an image of the inside of the housing and the second image acquiring device acquires an image of the outer peripheral wall of the housing, in this example, referring to fig. 1, the second image acquiring device is adjacently disposed at the outside of the housing, and the outer peripheral image of the housing can be acquired by surrounding the outer peripheral wall of the housing by driving of the driving source, referring to fig. 6, and fig. 6 is a second image acquired by the second image acquiring device, and defects such as scratches, depressions, bumps and the like outside the housing can be clearly acquired from the second image. In addition, the housing may also be directly connected to the driving source, so that the driving source drives the housing to rotate, so that the housing rotates relative to the first image capturing device 200 and the second image capturing device 300, and the first image capturing device 200 and the second image capturing device 300 capture the first image and the second image, respectively.
In some embodiments, before or after the first image capturing device is inserted into the interior of the housing at the opening of the housing, the method further comprises: and moving the shell to a third image acquisition device, and acquiring a third image of any one or more of the bottom and the bottom edge of the inner side of the shell, the bottom of the outer side of the shell and the opening of the shell by the third image acquisition device.
In one embodiment of this embodiment, the shell can be moved to the third image capturing device by the displacement device to capture the inner bottom and the bottom edge of the shell. Referring to fig. 7-8, the third image capturing device includes a third camera 410 and a first light source 420, the first light source 420 is used for supplementing light, and the third camera 410 captures images of the bottom inside the housing and the edge of the bottom north of the housing under the light supplementing effect of the first light source 420, as shown in fig. 8. Fig. 8 shows the inner bottom and the inner bottom edge of the housing collected by the third image capturing device, from which the defects such as scratches, depressions, and bumps on the outside of the housing can be clearly obtained. Meanwhile, the blind area of the first image acquisition device 200 can be eliminated by the third image acquisition device 400, image acquisition is performed on the bottom of the inner side of the shell and the edge of the bottom of the inner side of the shell, and meanwhile, the connecting seam between the bottom of the inner side of the shell and the side wall can be clearly acquired.
In one embodiment of this embodiment, the shell can be moved to the third image capturing device by the displacement device to capture the bottom image of the outer side of the shell. Referring to fig. 9 to 10, the third image obtaining device includes a third camera 410 and a first light source 420, the first light source 420 is used for supplementing light, and the third camera 410 obtains an image of the bottom outside the casing under the light supplementing effect of the first light source 420, as shown in fig. 10. Fig. 10 is an image of the bottom of the outer side of the housing collected by the third image capturing device, and defects such as scratches, depressions, and bumps on the bottom of the outer side of the housing can be clearly captured from the image of the bottom of the outer side of the housing.
In an implementation manner of this embodiment, the housing may be moved to the third image capturing device by the displacement device, and the image of the opening of the housing may be captured. Referring to fig. 11 to 12, the third image obtaining device includes a third camera 410 and a first light source 420, the first light source 420 is used for supplementing light, and the third camera 410 obtains an image of the opening of the shell under the light supplementing effect of the first light source 420, see fig. 10. Fig. 10 is an image of an opening of the housing collected by the third image capturing device, and defects such as scratches, depressions, bumps, and burrs at the bottom of the outer side of the housing can be clearly captured from the image of the bottom of the outer side of the housing.
In addition, an embodiment of the present application further provides an apparatus, where the apparatus is provided with a control program for executing the casing appearance detection method, and includes a first image acquisition device, and the first image acquisition device is configured to extend into the casing along the opening of the casing, and rotate inside the casing, so as to acquire a first image inside the casing. In this embodiment, stretch into the casing through the opening with first image acquisition device along the casing inside and carry out local image acquisition, simultaneously, can also make first image acquisition device can obtain the image of casing internal perisporium through rotatory first image acquisition device, can realize having accomplished battery inner wall and detect the complete coverage, improve battery case and detect the rate of accuracy and detection efficiency.
In some embodiments, the first image capturing device is a contact image sensor, the first image capturing device is a cylinder structure disposed along the bottom of the housing from the opening of the housing, and a contact type photosensitive element is disposed on one side of the first image capturing device; the first image acquisition device is driven by the driving source to stretch and rotate, so that the contact type photosensitive element acquires a first image from the inner side wall of the shell. In this embodiment, the first image capturing device is a contact image sensor, the first image capturing device is a cylinder structure disposed along the bottom of the housing from the opening of the housing, and a contact photosensitive element is disposed on one side of the first image capturing device, and the contact photosensitive element is a first image capturing mechanism; the first image acquisition device is driven by the driving source to stretch and rotate, so that the contact type photosensitive element acquires a first image from the inner side wall of the shell. Referring to fig. 1-3, the first image capturing device 200 protrudes into the housing 100 for detection, wherein the housing and the first image capturing device may have any shape such as a circular shape, a square shape, a hexagonal shape, etc., in this example, a circular housing and a cylindrical first image capturing device are used as examples, referring to fig. 2, the first image capturing device includes a contact image sensor 210 and a contact photosensitive element 211 disposed on one side of the contact image sensor 210, and the contact driving device may be driven by a driving source such as an air cylinder and a motor to achieve telescopic and rotary motions. The contact image sensor 210 has one end with a diameter smaller than the inner diameter of the housing such that the contact image sensor 210 is provided with a contact type photosensitive element 211 disposed to be extendable into the housing. Meanwhile, a light-emitting source can be arranged on one side of the contact type photosensitive element 211 and can be arranged adjacent to the contact type photosensitive element 211, so that the image effect obtained by the contact type photosensitive element 211 is improved. After the contact image sensor 210 extends into the housing, the contact photosensitive element 211 performs image acquisition along the inside of the housing, and can rotate 360 degrees under the driving of the rotating motor, and during rotation, the inner wall of the housing is fully scanned or fully covered for view, so that the image acquisition inside the housing is realized. Referring to fig. 3, fig. 3 is a first image obtained by the first image obtaining device, where the first image is an image of an inner wall of the housing, and defects such as scratches and depressions inside the housing can be clearly obtained by the first image obtaining device. In addition, the present application may also connect the housing to the driving source, and the first image capturing device may capture the image of the housing sidewall by rotating the housing 100 along the central axis of the housing.
In some embodiments, the first image acquisition device is an endoscope assembly including a drive rod, and at least one first camera disposed on the drive rod; the driving rod stretches out and draws back and rotates under the drive of driving source, makes first camera acquire the inside lateral wall of casing and acquires first image. In this embodiment, the actuating lever can be driven by driving sources such as cylinder, motor, makes the actuating lever stretch out and draw back, action such as rotation, and first camera is connected in actuating lever one side, see fig. 4, and first camera setting is on actuating lever 222, and the actuating lever is provided with first camera one end and stretches into the casing inboard, shoots the casing inboard through first camera, and simultaneously, the actuating lever can rotate the setting, makes first camera can follow the casing internal periphery rotation and shoot. In addition, the shell can be connected with the driving source, the shell can rotate along the central axis of the shell, and the first camera can acquire images of the side wall in the shell.
In some embodiments, the bottom of the inner side of the shell from the opening is divided into at least a first area and a second area; the number of the first cameras is one, and the first cameras are arranged on one side of the end part of the driving rod; the first camera is driven by the driving rod to rotate and photograph in the first area and the second area in sequence, and a first image of the side wall inside the shell is acquired. Referring to fig. 4, the interior of the housing may be divided into a first region 110, a second region 120, and a third region 130; the first camera can be driven by the driving rod to collect images in the first area, the second area and the third area in a segmented mode.
In some embodiments, the bottom of the inner side of the shell from the opening is divided into at least a first area and a second area; first camera quantity is at least two, and two first camera equidistance settings are in actuating lever one side, and just two first cameras rotate respectively first region, second region and shoot, acquire the first image of the inside lateral wall of casing. In this embodiment, the same number of first cameras as the number of the first cameras in the inner area of the housing can be arranged according to the size of the viewing area, as in the embodiment shown in fig. 5, the viewing width of the first camera 221 in this embodiment is the width of the first area 110, so that the driving rod can be arranged at three first cameras, and the three first cameras are respectively arranged along the first area 110, the second area 120 and the third area 130, and when the driving rod rotates, images of the first area 110, the second area 120 and the third area 130 can be simultaneously acquired.
In some embodiments, the end of the driving rod is further provided with a second camera for acquiring an image of the bottom inside the shell. Referring to fig. 5, a second camera may be provided at an end of the driving lever 222 for acquiring an edge image of the bottom inside the casing 100 and the contact of the bottom inside the casing 100 with the side wall. The method has the advantages that the edge image is obtained for detection, the blind area of the connecting part of the side wall and the bottom of the shell can be eliminated, and the detection accuracy of the interior of the shell is improved. Second camera 223 takes a picture angle mutually perpendicular with first camera 221, and second camera 223 can stretch into the casing at the actuating lever in-process and carry out image acquisition, also can stretch into the casing at the actuating lever completion and carry out image acquisition.
In some embodiments, the first image capturing device may be further disposed adjacent to the housing peripheral wall, and the first image capturing mechanism or the housing may be rotated to capture the second image of the housing peripheral wall. This application also can gather the image of the periphery wall of casing through first image acquisition mechanism, acquires the second image in the casing outside.
In some embodiments, the device further comprises a second image acquiring device, wherein the second image acquiring device is used for being adjacently arranged outside the shell and taking a rotary photograph of the peripheral wall of the shell to acquire a second image of the peripheral wall of the shell. In this embodiment, this application can pass through second image acquisition device for adjacent setting is outside the casing to rotate and shoot the casing periphery wall, acquire the second image of casing periphery wall. Specifically, the image of the peripheral wall of the housing may be acquired by the second image acquisition device while the first image acquisition device acquires the image of the inside of the housing. The image acquisition of the peripheral wall of the housing by the second image acquisition device may be performed before or after the image acquisition of the interior of the housing by the first image acquisition device. In this embodiment, an embodiment is enumerated in which the first image acquiring device acquires an image of the inside of the housing and the second image acquiring device acquires an image of the outer peripheral wall of the housing, in which, referring to fig. 1, the second image acquiring device is disposed adjacent to the outside of the housing, and the second image acquiring device can be driven by the driving source to surround the outer peripheral wall of the housing to acquire an image of the outer periphery of the housing, referring to fig. 6, and fig. 6 is a second image acquired by the second image acquiring device, and defects such as scratches, pits, and bumps on the outside of the housing can be clearly acquired from the second image. In addition, the housing may also be directly connected to the driving source, so that the driving source drives the housing to rotate, the housing rotates relative to the first image capturing device 200 and the second image capturing device 300, and the first image capturing device 200 and the second image capturing device 300 capture the first image and the second image, respectively.
In some embodiments, the apparatus further comprises a third image capturing device for capturing a third image of any one or more of the bottom edge and the inner side of the shell, the bottom edge and the outer side of the shell, and the opening of the shell. In one embodiment of this embodiment, the shell can be moved to the third image capturing device by the displacement device to capture the inner bottom and the bottom edge of the shell. Referring to fig. 7-8, the third image capturing device includes a third camera 410 and a first light source 420, the first light source 420 is used for supplementing light, and the third camera 410 captures images of the bottom inside the casing and the edge of the bottom north of the casing under the light supplementing effect of the first light source 420, as shown in fig. 8. Fig. 8 shows the inner bottom and the inner bottom edge of the housing collected by the third image capturing device, from which the defects such as scratches, depressions, and bumps on the outside of the housing can be clearly obtained. Meanwhile, the blind area of the first image acquisition device 200 can be eliminated by the third image acquisition device 400, image acquisition is performed on the bottom of the inner side of the shell and the edge of the bottom of the inner side of the shell, and meanwhile, the connecting seam between the bottom of the inner side of the shell and the side wall can be clearly acquired.
In one embodiment of this embodiment, the shell can be moved to the third image capturing device by the displacement device, and the bottom image of the outer side of the shell can be captured. Referring to fig. 9 to 10, the third image obtaining device includes a third camera 410 and a first light source 420, the first light source 420 is used for supplementing light, and the third camera 410 obtains an image of the bottom outside the casing under the light supplementing effect of the first light source 420, as shown in fig. 10. Fig. 10 is an image of the bottom of the outer side of the housing collected by the third image capturing device, and defects such as scratches, depressions, and bumps on the bottom of the outer side of the housing can be clearly captured from the image of the bottom of the outer side of the housing.
In an implementation manner of this embodiment, the housing may be moved to the third image capturing device by the displacement device, and the image of the opening of the housing may be captured. Referring to fig. 11 to 12, the third image obtaining device includes a third camera 410 and a first light source 420, the first light source 420 is used for supplementing light, and the third camera 410 obtains an image of the opening of the shell under the light supplementing effect of the first light source 420, see fig. 10. Fig. 10 is an image of an opening of the housing collected by the third image capturing device, and the defects such as scratches, depressions, bumps, and burrs at the bottom of the outer side of the housing can be clearly captured from the image of the bottom of the outer side of the housing.
In some embodiments, the apparatus further comprises a displacement device for moving the housing, and the displacement device, the first image acquisition device, the second image acquisition device and the third image acquisition device are arranged along the displacement device. In this embodiment, the displacement device is configured to move the housing sequentially on the first image capturing device, the second image capturing device, and the third image capturing device, so that the first image capturing device, the second image capturing device, and the third image capturing device detect the housing.
The technical scheme of the embodiment of the application includes, but is not limited to, the following technical effects that the first image acquisition device extends into the shell to acquire the inner side image of the shell, the second image acquisition device and the outer peripheral wall of the shell perform relative rotation to photograph to acquire the outer peripheral wall image of the shell, and the third image acquisition device acquires any one or more images of the inner bottom and the bottom edge of the shell, the outer bottom of the shell and the shell opening of the shell; thereby realize that the casing outward appearance detects entirely, can effectively detect defects such as the arch of casing surface, sunken, mar, realize that the casing detects the full coverage, improved the rate of accuracy and the yields that the casing detected. And then the yield of casing production has been improved, the potential safety hazard of casing because of the defect brings is reduced.
It is to be noted that, since the apparatus according to the embodiment of the present application includes the controller according to the above-mentioned embodiment, and the controller according to the above-mentioned embodiment is capable of executing the casing appearance detection method according to the above-mentioned embodiment, reference may be made to the specific implementation and technical effects of the battery cell detection system according to the embodiment of the present application with respect to the specific implementation and technical effects of the control method for a battery cell detection system according to any one of the above-mentioned embodiments.
It will be understood by those of ordinary skill in the art that all or some of the steps, systems, and methods disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as is well known to those skilled in the art.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are to be included in the scope of the present invention defined by the claims.
Claims (16)
1. A shell appearance detection method is characterized by being applied to shell appearance detection with one or more side openings, and comprises the following steps:
the method comprises the steps of extending a first image acquisition device into a shell along an opening of the shell, and enabling the first image acquisition device and the shell to rotate relatively to acquire a first image of the side wall in the shell.
2. A shell appearance inspection method according to claim 1, wherein a first image acquisition mechanism is provided on one side of the first image acquisition device; the first image acquisition device or the shell stretches and retracts and rotates under the driving of the driving source, so that the first image acquisition mechanism acquires a first image from the side wall in the shell.
3. The method of claim 1, wherein the housing is divided into a plurality of collection areas; one side of the first image acquisition device is provided with a first image acquisition mechanism which sequentially takes pictures in a rotating manner in the acquisition area, or one side of the first image acquisition device is provided with a plurality of first image acquisition mechanisms which respectively take pictures in a rotating manner in the acquisition area.
4. A shell appearance inspection method according to claim 2 or 3, wherein before or after the first image capturing device is inserted into the shell through the opening, the method further comprises:
and arranging the first image acquisition devices adjacently on the peripheral wall of the shell, and rotating the first image acquisition mechanism or the shell to acquire a second image of the peripheral wall of the shell.
5. The shell appearance detection method according to claim 2 or 3, wherein a second image acquisition mechanism is further arranged at the free end of the first image acquisition device, and in the process that the first image acquisition device extends into the shell, an image of an opening of the shell, images of the bottom and the edge of the inner side of the shell and images of the side wall of the inner side of the shell are sequentially acquired.
6. The method for inspecting the appearance of the housing according to claim 1, further comprising, when the first image capturing device is inserted into the housing through the opening of the housing, the step of:
and adjacently arranging a second image acquisition device on the peripheral wall of the shell, and rotating the second image acquisition device or the shell to acquire a second image of the peripheral wall of the shell.
7. The method for inspecting the appearance of the housing according to claim 1, further comprising, before or after the step of inserting the first image capturing device into the opening of the housing into the interior of the housing:
and moving the shell to a third image acquisition device, and acquiring any one or more third images of the inner bottom and the bottom edge of the shell, the outer bottom of the shell and the shell opening of the shell by the third image acquisition device.
8. An apparatus provided with a control program for executing the casing appearance detecting method according to any one of claims 1 to 7, comprising:
the first image acquisition device is used for extending into the shell along the opening of the shell and rotating relative to the shell to acquire a first image in the shell.
9. An apparatus according to claim 8, wherein the first image capturing device is a contact image sensor, the first image capturing device is a cylindrical structure disposed along the bottom of the housing from the opening of the housing, and a contact type photosensitive element is disposed on one side of the first image capturing device; the first image acquisition device or the shell is driven by the driving source to stretch and rotate, so that the contact type photosensitive element acquires a first image from the inner side wall of the shell.
10. An apparatus according to claim 8, wherein the first image acquisition device is an endoscope assembly comprising a drive rod, and at least one first camera head disposed on the drive rod; the driving rod or the shell is driven by the driving source to stretch and rotate, so that the first camera acquires a first image from the side wall in the shell.
11. The device of claim 10, wherein the bottom of the inner side of the shell from the opening is divided into at least a first area and a second area; the number of the first cameras is one, and the first cameras are arranged on one side of the end part of the driving rod;
the first camera is driven by the driving rod to rotate and photograph in the first area and the second area in sequence to obtain a first image of the side wall inside the shell.
12. The device as claimed in claim 10, wherein the inside of the housing is divided into at least a first region and a second region from the bottom to the opening; first camera quantity is at least two, two first camera equidistance sets up actuating lever one side, and two first camera rotates the taking a picture to first region, second region respectively, acquires the first image of the inside lateral wall of casing.
13. A device according to any one of claims 11 or 12, characterised in that the end of the drive rod is provided with a second camera for taking images of the opening in the housing and/or the underside of the inside of the housing.
14. An apparatus as claimed in claim 8, further comprising:
and the second image acquisition device is used for adjacently setting the outside of the shell and rotationally photographing the peripheral wall of the shell to acquire a second image of the peripheral wall of the shell.
15. An apparatus as claimed in claim 14, further comprising:
the third image acquisition device is used for acquiring any one or more third images of the inner bottom and the bottom edge of the shell, the outer bottom of the shell and the shell opening of the shell.
16. An apparatus according to claim 15, further comprising displacement means for moving the housing, the first image capturing means, the second image capturing means, and the third image capturing means being disposed along the displacement means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211201622.1A CN115508383A (en) | 2022-09-29 | 2022-09-29 | Shell appearance detection method and device |
| PCT/CN2022/139646 WO2024066074A1 (en) | 2022-09-29 | 2022-12-16 | Case appearance inspection method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211201622.1A CN115508383A (en) | 2022-09-29 | 2022-09-29 | Shell appearance detection method and device |
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| CN115508383A true CN115508383A (en) | 2022-12-23 |
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| CN202211201622.1A Pending CN115508383A (en) | 2022-09-29 | 2022-09-29 | Shell appearance detection method and device |
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| WO (1) | WO2024066074A1 (en) |
Cited By (1)
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|---|---|---|---|---|
| WO2024066074A1 (en) * | 2022-09-29 | 2024-04-04 | 广东利元亨智能装备股份有限公司 | Case appearance inspection method and apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016517031A (en) * | 2013-03-15 | 2016-06-09 | ジャリリアン，モハマド | Borescope device and method of using the borescope device |
| CN106645177B (en) * | 2016-12-30 | 2019-05-03 | 河南奇测电子科技有限公司 | Battery-shell surface vision-based detection assembly line and its inner subface inspection device |
| CN108844961A (en) * | 2018-08-01 | 2018-11-20 | 佛山科学技术学院 | A kind of temperature controller case vision detection system and method |
| JP7396876B2 (en) * | 2019-11-27 | 2023-12-12 | ファナック株式会社 | Internal image inspection device and internal image inspection system |
| CN113406098B (en) * | 2021-06-30 | 2024-02-06 | 浙江昊杨新能源科技有限公司 | Device and method for detecting dirty marks on bottom shell and inner surface of battery plastic shell |
| CN115508383A (en) * | 2022-09-29 | 2022-12-23 | 广东利元亨智能装备股份有限公司 | Shell appearance detection method and device |
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- 2022-09-29 CN CN202211201622.1A patent/CN115508383A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2024066074A1 (en) * | 2022-09-29 | 2024-04-04 | 广东利元亨智能装备股份有限公司 | Case appearance inspection method and apparatus |
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