CN117593550A

CN117593550A - Coating system and spot inspection method of coating system

Info

Publication number: CN117593550A
Application number: CN202410073848.0A
Authority: CN
Inventors: 李梓豪; 姜平; 李红圆; 祁磊
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-01-18
Filing date: 2024-01-18
Publication date: 2024-02-23

Abstract

The application provides a coating system and a spot inspection method of the coating system, wherein the coating system comprises: the system comprises a transmission assembly, a plurality of image acquisition devices and an upper computer; the conveying assembly is used for conveying the profiling battery cell on a conveying path of the coating procedure under the condition that spot inspection is required to be carried out on the coating equipment; the plurality of image acquisition devices are used for acquiring target images of target surfaces of the profiling battery cells under the condition that the profiling battery cells are determined to reach point detection points in a conveying path of the coating process; and the upper computer is used for detecting the plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices. So as to realize accurate detection of the coating system.

Description

Coating system and spot inspection method of coating system

Technical Field

The application relates to the technical field of batteries, in particular to a coating system and a spot inspection method of the coating system.

Background

With the development of the electric vehicle industry, the battery pack is also paid more attention to as an important component of the electric vehicle, and the battery core is also paid more attention to as an important component of the battery pack in the quality state. The coating process is an important ring of manufacturing the battery cell, and spot inspection is required to be performed on a coating system before and after coating, and coating can be performed after passing the spot inspection.

The current spot inspection of the coating system in the coating process is to firstly acquire an image of the battery cell by using image acquisition equipment, then manually confirm whether the gray value of the image is consistent with the gray value of the film on the real battery cell, and confirm the spot inspection result of the coating system according to the comparison result. The scheme has low efficiency and inaccurate spot inspection result when spot inspection is performed on the coating system.

Disclosure of Invention

In view of the above, the present application provides a coating system and a spot inspection method of the coating system to achieve accurate detection of the coating system.

In a first aspect, embodiments of the present application provide an encapsulation system comprising: the system comprises a transmission assembly, a plurality of image acquisition devices and an upper computer; the conveying assembly is used for conveying the profiling battery cell on a conveying path of the coating procedure under the condition that spot inspection is required to be carried out on the coating system; the plurality of image acquisition devices are used for acquiring target images of target surfaces of the profiling battery cells under the condition that the profiling battery cells are determined to reach point detection points in a conveying path of the coating process; the target image comprises a first image and a second image; the upper computer is used for detecting the plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices; the target surface of the profiling battery cell is provided with a spot check sheet; the upper computer is specifically configured to calculate, for any one of the first image and the second image, point inspection information of the point inspection piece in the image, compare the point inspection information of the point inspection piece in the image with reference point inspection information of the point inspection piece, obtain a comparison result of the image, and determine a detection result of the image acquisition device according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

In the above technical solution, the coating system includes: the device comprises a conveying component, a plurality of image acquisition devices and an upper computer, wherein the conveying component is used for conveying the profiling battery core on a conveying path of a coating procedure under the condition that spot inspection is required to be carried out on a coating system, the plurality of image acquisition devices are used for acquiring target images of target surfaces of the profiling battery core under the condition that the spot inspection point of the profiling battery core in the conveying path of the coating procedure is determined, and the plurality of image acquisition devices are used for detecting the plurality of image acquisition devices based on the target images to obtain detection results of the plurality of image acquisition devices. Because the real battery core is not adopted during spot inspection, but the profiling battery core with the real battery core is adopted, the profiling battery core can be repeatedly shot, the real battery core cannot be damaged, the size of the profiling battery core is only one size, the consistency of spot inspection at each time can be ensured, the labor is not required to be consumed, the shooting parameters of the image acquisition equipment are adjusted during spot inspection at each time, the labor is saved, the spot inspection result is determined through an upper computer, the manual check is not required, and the accuracy of the spot inspection result is improved.

In some embodiments of the present application, the plurality of image capturing devices includes a first image capturing device and a second image capturing device, the spot check site includes a first spot check site and a second spot check site, the first image capturing device is located at the first spot check site, and the second image capturing device is located at the second spot check site; the first image acquisition equipment is used for acquiring a first image of a first surface of the target surface of the profiling battery cell before coating under the condition that the profiling battery cell reaches a first point detection point; the second image acquisition equipment is used for acquiring a second image of the first surface of the profiling battery cell after coating under the condition that the profiling battery cell reaches a second point detection point; the target surface of the profiling battery cell is other surfaces except the top surface of each surface of the profiling battery cell.

In the above technical scheme, under the condition that the first image acquisition device determines that the profiling cell reaches the first point detection site, the first image of the first surface in the target surface of the profiling cell is acquired, and under the condition that the second image acquisition device reaches the second point detection site, the second image of the first surface of the profiling cell is acquired, so that the images of the first surface of the profiling cell at the first point detection site and the second point detection site can be acquired respectively, and further the images of the first point detection site and the second point detection site can be detected respectively.

In some embodiments of the present application, the upper computer is further configured to send an image acquisition signal to the controller; the system further comprises: the controller is used for generating a control instruction under the condition of receiving the image acquisition signal; and the conveying assembly is specifically used for conveying the profiling battery cells on a conveying path of the coating process based on the control instruction.

In the technical scheme, the upper computer sends the image acquisition signal to the controller, the controller generates the control instruction under the condition of receiving the image acquisition signal, and then the transmission assembly can transmit the profiling battery cell on the transmission path of the coating process based on the control instruction, so that the profiling battery cell is transported when the image acquisition signal is received, and the loss of the spot inspection system is saved.

In some embodiments of the present application, the upper computer includes a graphic code, and the upper computer is specifically configured to send an image acquisition signal to the controller in response to a target operation of a user on a target control displayed on the upper computer; the target control is a control which is displayed on the upper computer after the code scanning terminal scans the graphic code.

According to the technical scheme, the target control can be displayed by utilizing the code scanning terminal to scan the graphic code, then the image acquisition signal is sent to the controller in response to the target operation of the user on the target control displayed on the upper computer, so that the user can start the spot inspection program of the coating equipment only by scanning the code, and the spot inspection efficiency is improved.

In a second aspect, an embodiment of the present application provides a spot inspection method of an encapsulation system, where the method includes: under the condition that the copying battery cell reaches a spot inspection point in a conveying path of a coating process, acquiring target images of target surfaces of the copying battery cells sent by a plurality of image acquisition devices, wherein the spot inspection pieces are arranged on the target surfaces of the copying battery cells; the target image comprises a first image and a second image; detecting a plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices; the detecting the plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices comprises: calculating to-be-spot-inspected information of the spot inspection piece in the image aiming at any one image of the first image and the second image; comparing the point detection information to be detected of the point detection piece in the image with the reference point detection information of the point detection piece aiming at any one image of the first image and the second image to obtain a comparison result of the images; and determining detection results of the plurality of image acquisition devices according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

According to the technical scheme, under the condition that the spot inspection point of the profiling battery cell in the conveying path of the coating process is determined, the target image of the target surface of the profiling battery cell sent by the plurality of image acquisition devices is acquired, then the plurality of image acquisition devices are detected based on the target image, so that the detection result of the plurality of image acquisition devices can be obtained, spot inspection is not needed manually, and the spot inspection efficiency and accuracy are improved.

In some embodiments of the present application, the plurality of image capturing devices includes a first image capturing device and a second image capturing device, the spot check site includes a first spot check site and a second spot check site, the first image capturing device is located at the first spot check site, the second image capturing device is located at the second spot check site, and the target image includes a first image and a second image; the target surface of the profiling battery core is other surfaces except the top surface in the surfaces of the profiling battery core; acquiring target images of target surfaces of the profiling battery cells sent by a plurality of image acquisition devices, wherein the target images comprise: acquiring a first image of a first surface, which is a surface of the profiling battery cell, before coating, in a target surface of the profiling battery cell, wherein the first image is transmitted by a first image acquisition device under the condition that the profiling battery cell reaches a first point detection point, and the first surface is any one surface of other surfaces except the top surface in all surfaces of the profiling battery cell; and acquiring a second image of the first surface of the profiling battery cell after the coating under the condition that the profiling battery cell reaches a second point detection point is determined, which is sent by the second image acquisition equipment.

In the technical scheme, the images of the first surface of the collected profiling battery cell at the first point detection site and the second point detection site are respectively obtained, so that the image acquisition equipment of the first point detection site and the image acquisition equipment of the second point detection site can be respectively detected.

In some embodiments of the present application, the information to be spot checked includes a gray value and size information, and the reference spot checked information includes a reference gray value and reference size information; comparing the point detection information to be detected of the point detection piece with the reference point detection information of the point detection piece to obtain a comparison result of the image, wherein the comparison result comprises the following steps: and comparing the gray value of the point-detected piece with the reference gray value of the point-detected piece in the image, and comparing the size information of the point-detected piece in the image with the reference size information of the point-detected piece to obtain a comparison result of the image.

In the technical scheme, the gray value of the point detection piece in the image is compared with the reference gray value of the point detection piece, and the size information of the point detection piece in the image is compared with the reference size information of the point detection piece, so that the comparison result of the image can be accurately obtained, and further the accurate detection of the image acquisition equipment is realized.

In some embodiments of the present application, the spot check includes at least one region, each region including a preset graphic therein; calculating to-be-spot-inspected information of spot inspection pieces in an image, comprising: respectively calculating the size information of each preset graph in the point detection sheet in the image and the average value of gray values of target areas in at least one area in the point detection sheet in the image, wherein the target area in each area is an area except the preset graph in the area; comparing the gray value of the point-detected piece with the reference gray value of the point-detected piece in the image, comprising: determining a first difference value between the size information of each preset graph in the point-detected piece and the reference size information of each preset graph in the point-detected piece; comparing the size information of the spot check with the reference size information of the spot check in the image, wherein the method comprises the following steps: and determining a second difference value between the average value and the average value of the reference gray values of the target area in at least one area in the spot inspection piece.

In the above technical solution, the size information of each preset pattern in the point-detected piece in the image and the average value of the gray values of the target area in at least one area in the point-detected piece in the image are calculated respectively, then the first difference value of the size information of each preset pattern in the point-detected piece in the image and the reference size information of each preset pattern in the point-detected piece and the second difference value of the average value and the average value of the reference gray values of the target area in at least one area in the point-detected piece are determined, so that the point-detected information to be detected in the point-detected piece in the image and the reference point-detected information of the point-detected piece can be compared accurately, and the comparison result of the image can be obtained accurately.

In some embodiments of the present application, determining a detection result of a plurality of image capturing devices according to a comparison result corresponding to a first image and a comparison result corresponding to a second image includes: aiming at the comparison result of any one of the first image and the second image, if the comparison result is determined that the first difference value is smaller than a first preset difference value threshold value and the second difference value is smaller than a second preset difference value threshold value, determining that the detection result of the image acquisition equipment corresponding to the image is passing detection; and determining that the detection result of the image acquisition equipment corresponding to the image is not passing under the condition that the comparison result is that the first difference value is not smaller than a first preset difference value threshold value and/or the comparison result is that the second difference value is not smaller than a second preset difference value threshold value.

In the above technical solution, for the first difference value and the second difference value calculated according to the image acquired by any image acquisition device, whether the detection of the image acquisition device passes or not may be accurately determined according to the relationship between the first difference value and the first preset difference value threshold value, and between the second difference value and the second preset difference value threshold value.

In some embodiments of the present application, after determining that the comparison result is that the first difference is not less than the first preset difference threshold, the method further includes: outputting the adjustment information of the target object so that the comparison result is that the first difference value is smaller than a first preset difference value threshold value and the second difference value is smaller than a second preset difference value threshold value after the target object is adjusted; wherein the target object comprises at least one of: profiling the position of the battery cell; the location of the plurality of image acquisition devices; and the light sources correspond to the plurality of image acquisition devices.

In the above technical solution, after determining that the comparison result is that the first difference value is not smaller than the first preset difference value threshold, the adjustment information of the target object may also be output, so that after the target object is adjusted, the comparison result corresponding to the first image is that the first difference value is smaller than the first preset difference value threshold, and the comparison result corresponding to the second image is that the second difference value is smaller than the second preset difference value threshold, so that the target object may be continuously adjusted to detect the image acquisition device, and the detection accuracy of the image acquisition device is improved.

In some embodiments of the present application, when the comparison result is determined that the second difference is not less than the second preset difference threshold, determining that the detection result of the image capturing device corresponding to the image is detection failure includes: returning to execute the step of obtaining the comparison result by calculating the gray value and the size information of the point detection piece based on the point detection piece in the image, comparing the gray value with the reference gray value of the point detection piece and comparing the size information with the reference size information of the point detection piece under the condition that the comparison result is determined that the second difference value is not smaller than the second preset difference value threshold; and under the condition that the comparison result is that the number of times that the second difference value is not smaller than the second preset difference value threshold reaches the preset number of times, determining that the detection result of the image acquisition corresponding to the image is that the detection is not passed.

In the above technical solution, if the comparison result is determined that the second difference is not smaller than the second preset difference threshold, spot inspection may be repeated to determine whether the second difference is not smaller than the second preset difference threshold, so that the detection accuracy of the image acquisition device is improved.

In some embodiments of the present application, acquiring a first image of a first one of the target surfaces of the acquired profiled cell, sent by a first image acquisition device, in the case where it is determined that the profiled cell reaches a first point of detection site, includes: acquiring a first sub-image and a second sub-image of a first surface in a target surface of the acquired profiling battery cell under the condition that the profiling battery cell reaches a first point detection point, wherein the first sub-image and the second sub-image comprise partial areas of the first surface, and the partial areas of the first surface in the first sub-image and the partial areas of the first surface in the second sub-image form all areas of the target surface; and fusing the first sub-image and the second sub-image to obtain a first image.

In the technical scheme, under the condition that the profiling battery cell reaches the first point detection point is determined, the first sub-image and the second sub-image of the first surface in the target surface of the profiling battery cell are acquired, and the first sub-image and the second sub-image are fused to obtain the first image, so that the first surface occupies a larger area in the first image, the calculation of the first image is facilitated, the size information of a preset graph in the first image and the calculation accuracy of the average value of the gray values of the target area are improved, and the detection accuracy of the image acquisition device is further improved.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic structural diagram of a spot inspection system of a coating apparatus according to an embodiment of the present disclosure;

FIG. 2 is a process schematic of an encapsulation process according to one embodiment of the present disclosure;

FIG. 3 is a schematic structural view of a profiled cell provided in an embodiment of the present application;

fig. 4 is a schematic diagram of an arrangement of an image capturing apparatus according to an embodiment of the present application;

FIG. 5 is a schematic flow chart of a spot inspection method of a coating apparatus according to an embodiment of the present disclosure;

FIG. 6 is a schematic flow chart of a spot inspection method of a coating apparatus according to an embodiment of the present disclosure;

FIG. 7 is a schematic flow chart of a spot inspection method of a coating apparatus according to an embodiment of the present disclosure;

fig. 8 is a schematic flow chart of a spot inspection method of a coating apparatus according to another embodiment of the present application;

Fig. 9 is a schematic flow chart of a spot inspection method of a coating apparatus according to another embodiment of the present application;

fig. 10 is a schematic structural diagram of a spot inspection device of a coating apparatus according to another embodiment of the present application.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the technical terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or be integrated; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of embodiments of the present application, unless explicitly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Before introducing the technical solution of the embodiments of the present application, first, the background technology of the embodiments of the present application is described:

the current spot inspection process for the coating system is as follows: and acquiring an image of the real battery cell by using image acquisition equipment, then manually confirming whether the gray value of the image is consistent with the gray value of the film on the real battery cell at fixed time, and confirming the spot inspection result of the coating system according to the comparison result. Because each surface of the battery core needs to be photographed, namely the real battery core needs to be repeatedly photographed and checked manually, the efficiency is low and the checking result is not accurate enough when the film coating system is checked. And because the spot inspection cell used each time is different, the size of each spot inspection cell is different, so when shooting the spot inspection cell each time, professional personnel are required to adjust shooting parameters of image acquisition equipment, spot inspection can be performed after adjustment is finished, the labor cost is increased, and the spot inspection uniformity of each time can be reduced.

In order to solve the above problems, an embodiment of the present application provides an encapsulation system and a spot inspection method of the encapsulation system, where the encapsulation system includes: the device comprises a conveying component, a plurality of image acquisition devices and an upper computer, wherein the conveying component is used for conveying the profiling battery core on a conveying path of a coating procedure under the condition that spot inspection is required to be carried out on a coating system, the plurality of image acquisition devices are used for acquiring target images of target surfaces of the profiling battery core under the condition that the spot inspection point of the profiling battery core in the conveying path of the coating procedure is determined, and the plurality of image acquisition devices are used for detecting the plurality of image acquisition devices based on the target images to obtain detection results of the plurality of image acquisition devices. Because the real battery core is not adopted during spot inspection, but the profiling battery core with the real battery core is adopted, the profiling battery core can be repeatedly shot, the real battery core cannot be damaged, the size of the profiling battery core is only one size, the consistency of spot inspection at each time can be ensured, the labor is not required to be consumed, the shooting parameters of the image acquisition equipment are adjusted during spot inspection at each time, the labor is saved, the spot inspection result is determined through an upper computer, the manual check is not required, and the accuracy of the spot inspection result is improved.

The following describes in detail the coating system provided in the embodiment of the present application with reference to fig. 1.

Fig. 1 illustrates a schematic structural diagram of an encapsulation system provided in an embodiment of the present application, which may specifically include a transfer assembly 110, a plurality of image capture devices 120, and a host computer 130.

A conveying component 110, configured to convey the profiling battery cell on a conveying path of the coating procedure when the spot inspection needs to be performed on the coating system;

a plurality of image acquisition devices 120 for acquiring a target image of a target surface of the profiling cell in the case of determining that the profiling cell reaches a spot in a transfer path of a coating process;

the upper computer 130 is configured to detect the plurality of image capturing devices based on the target image, and obtain detection results of the plurality of image capturing devices.

The coating process may be a process of coating the battery cells in the manufacturing process of the battery cells. The specific coating process may be as shown in fig. 2, in the upper half of fig. 2, the direction indicated by the arrow is the logistics direction of the coating process, firstly, loading and buffering are performed at a station a, core closing and loading are performed at a station B, then coating and hot melting are performed at a station C, rubberizing is performed at a station D, shell entering is performed at a station E, and finally, blanking is performed at a station F.

The profile modeling cell may be a cell made by imitating a real cell, the profile modeling cell is completely identical to the real cell in appearance, and the profile modeling cell may be understood as a structure having the same appearance as the real cell but an empty interior, as shown in fig. 3.

It should be noted that, referring to fig. 3, the profile modeling battery cell may have a rectangular parallelepiped structure, the top surface of the profile modeling battery cell may include a fixing member 31, the fixing member 31 may be used to fix the top surface 32, and the top surface 32 of the profile modeling battery cell is detachable. As shown in fig. 3, the fixing member 31 may be plural.

The image acquisition device may be a device for image acquisition, for example a camera.

The spot inspection site can be a site requiring spot inspection of the coating equipment, and the site can be a site G and a site H in FIG. 2, namely, the spot inspection site is respectively arranged before and after the station C.

The target surface may be a surface of the profiling electric core to be acquired, and the target surface may specifically be other surfaces except the top surface in the profiling electric core, namely, five other surfaces except the top surface 32 in fig. 3.

In the case of capturing images of five surfaces other than the top surface 32, each surface has a corresponding image capturing device, so that the image captured by each surface can be used to detect the corresponding image capturing device.

Specifically, for each surface to be acquired, the corresponding image acquisition device is set as shown in fig. 4, a side camera M and a side camera N are respectively used for capturing images of two sides of the profiling cell P, namely, a side 33 in fig. 3 and another side (not shown in the figure) opposite to the side 33, for example, the side camera M may be used for capturing images of the side 33, and the side camera N may be used for capturing images of the other side opposite to the side 33. The 2 large-area cameras 43 are respectively used for photographing two large surfaces of the profiling cell P, namely, the large surface 34 in fig. 3 and another large surface (not shown in the figure) opposite to the large surface 34, and may be, for example, one large-area camera 43 for photographing an image of the large surface 34 and the other large-area camera 43 for photographing the other large surface opposite to the large surface 34. The bottom surface camera 44 is used to capture the bottom surface of the profile-modeling cell P in fig. 3, i.e., the other surface (not shown in the figures) opposite the top surface 32.

The side camera K and the side camera L in fig. 4 capture two sides of another profiling cell Q different from the profiling cell P.

With continued reference to fig. 2, the lower half of fig. 2 is a top view of the upper half of fig. 2, wherein 20 is a magnetic levitation rail, i.e. corresponds to a transfer assembly, and the side camera M and the side camera N in the station G of fig. 2 are respectively used for photographing two sides of the profiling cell P, and the two large-area cameras 43 are respectively used for photographing two large sides of the profiling cell P. Correspondingly, the side camera M and the side camera N in the station H in fig. 2 are respectively used for photographing two sides of the profiling battery cell Q, and the two large-surface cameras 43 are respectively used for photographing two large surfaces of the profiling battery cell Q. In fig. 2, the bottom cameras in the station G and the station H are not shown because they are blocked by their corresponding side cameras, and in the example of the station G, the bottom cameras in the station G are blocked by the side camera M, so they are not shown.

In fig. 2, the magnetic levitation track is controlled by a controller 21, the controller 21 is connected to a host computer 22, and the functions of the controller 21 and the host computer 22 will be described in detail later.

In an embodiment of the present application, an encapsulation system comprises: the device comprises a conveying component, a plurality of image acquisition devices and an upper computer, wherein the conveying component is used for conveying the profiling battery core on a conveying path of a coating procedure under the condition that spot inspection is required to be carried out on the coating equipment, the plurality of image acquisition devices are used for acquiring target images of target surfaces of the profiling battery core under the condition that the spot inspection point of the profiling battery core in the conveying path of the coating procedure is determined, and the plurality of image acquisition devices are used for detecting the plurality of image acquisition devices based on the target images to obtain detection results of the plurality of image acquisition devices. Because the real battery core is not adopted during spot inspection, but the profiling battery core with the real battery core is adopted, the profiling battery core can be repeatedly shot, the real battery core cannot be damaged, the size of the profiling battery core is only one size, the consistency of spot inspection at each time can be ensured, the labor is not required to be consumed, the shooting parameters of the image acquisition equipment are adjusted during spot inspection at each time, the labor is saved, the spot inspection result is determined through an upper computer, the manual check is not required, and the accuracy of the spot inspection result is improved.

In some embodiments of the present application, the plurality of image capturing devices includes a first image capturing device and a second image capturing device, the spot check site includes a first spot check site and a second spot check site, the first image capturing device is located at the first spot check site, the second image capturing device is located at the second spot check site, and the target image includes a first image and a second image;

the first image acquisition equipment is used for acquiring a first image of a first surface of the target surface of the profiling battery cell before coating under the condition that the profiling battery cell reaches a first point detection point;

and the second image acquisition equipment is used for acquiring a second image of the first surface of the profiling cell after the coating under the condition that the profiling cell is determined to reach the second point detection point.

Wherein, the first image acquisition device and the second image acquisition device can be at least one.

The first spot and the second spot may be two spots before and after the coating, respectively, for example, the first spot and the second spot may be the station G and the station H in fig. 2, respectively.

The first image may be an image of the profiled cell acquired at the first point of detection, i.e., an image of the profiled cell acquired prior to encapsulation. The second image may be an image of the profiled cell acquired at the second spot, i.e., an image of the profiled cell acquired after encapsulation.

The first face may be any one of the target faces, i.e., the first face may be any one of the profiled cells other than the top face.

In some embodiments of the present application, a first image of a first face of the target face of the profiled cell before the encapsulation may be acquired with a first image acquisition device if it is determined that the profiled cell reaches a first spot, and a second image of the first face of the profiled cell after the encapsulation may be acquired with a second image acquisition device if the profiled cell reaches a second spot.

It should be noted that, the first point detection site and the second point detection site are respectively provided with a plurality of image capturing devices for capturing the target image of the target surface, and the arrangement modes of the image capturing devices of the first point detection site and the second point detection site are as shown in fig. 4, that is, the first point detection site and the second point detection site are respectively provided with two side cameras, and the two large-area cameras and the one bottom camera, that is, the arrangement modes of the image capturing devices of the first point detection site and the image capturing devices of the second point detection site are identical.

In the embodiment of the application, under the condition that the first image acquisition equipment determines that the profiling cell reaches the first point detection site, the first image of the first surface of the target surface of the profiling cell before the coating is acquired, under the condition that the profiling cell reaches the second point detection site, the second image of the first surface of the profiling cell after the coating is acquired, so that the images of the first surface of the profiling cell at the first point detection site and the second point detection site can be acquired respectively, and further the image acquisition equipment of the first point detection site and the image acquisition equipment of the second point detection site can be detected respectively.

In some embodiments of the present application, a spot check is provided on the target surface of the profiled cell, i.e., on all five surfaces of the profiled cell except the top surface, such as spot check 35 in fig. 3. The spot check sheet may be a structure for performing spot check, and may be a film, for example.

The upper computer is specifically configured to calculate point detection information of a point detection piece in an image according to any one of the first image and the second image, compare the point detection information of the point detection piece in the image with reference point detection information of the point detection piece, obtain a comparison result of the image, and determine a detection result of the image acquisition device according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

The information to be spot checked can be information to be spot checked, and specifically can be gray value and size information of a film.

The reference point detection information can be reference information for comparing with the to-be-detected information, the reference point detection information can be a preset reference standard of the to-be-detected information, and the reference point detection information can be reference gray value and reference size information of the film.

In some embodiments of the present application, for any one of the first image and the second image, the to-be-inspected information of the film in the image may be compared with the reference point inspected information of the point inspected sheet to obtain an image comparison result, and according to the comparison result corresponding to the first image and the comparison result corresponding to the second image, a detection result of the image acquisition device is determined, specifically how to compare the to-be-inspected information of the film in the image with the reference point inspected information of the point inspected sheet to obtain an image comparison result, and according to the comparison result corresponding to the first image and the comparison result corresponding to the second image, a detection result of the image acquisition device is determined to be described in detail in a later embodiment.

In the embodiment of the application, aiming at any one of the first image and the second image, the point detection information of the point detection piece in the image can be compared with the reference point detection information of the point detection piece to obtain the comparison result of the image, and then the detection result of the image acquisition equipment can be accurately determined according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

In some embodiments of the present application, the upper computer is further configured to send an image acquisition signal to the controller;

the above-mentioned system may further comprise:

the controller is used for generating a control instruction under the condition of receiving the image acquisition signal;

and the conveying assembly is specifically used for conveying the profiling battery cells on a conveying path of the coating process based on the control instruction.

The image acquisition signal can be a signal for prompting that the image of the profiling battery cell needs to be acquired. The image acquisition signal may be generated by a host computer. The specific manner of generation will be described in more detail in the examples that follow.

The control instructions may be instructions generated by the controller upon receipt of the image acquisition signal for controlling transportation of the profiled cells.

In the embodiment of the application, the upper computer sends the image acquisition signal to the controller, the controller generates the control instruction under the condition of receiving the image acquisition signal, and then the transmission assembly can transmit the profiling battery cell on the transmission path of the coating process based on the control instruction, so that the profiling battery cell is transported when the image acquisition signal is received, and the loss of the spot inspection system is saved.

In some embodiments of the present application, a graphic code may be included on the upper computer, and after the user scans the graphic code with the code scanning terminal, the target control may be displayed on the upper computer, and then the upper computer is specifically configured to send an image acquisition signal to the controller in response to a target operation of the user on the target control displayed on the upper computer.

The graphic code may be a two-dimensional code. The code scanning terminal may be, but is not limited to, a personal computer (Personal Computer, PC), a smart phone, a tablet computer, or a personal digital assistant (Personal Digital Assistant, PDA), etc.

The target control may be a control generated after scanning the line code.

The target operation may be an operation performed on the target control, and the target operation may be a click operation, for example.

In some embodiments of the present application, a user may scan a graphic code displayed on an upper computer using a code scanning terminal, then display a target control in the upper computer, and then click on the target control by the user, may generate an image acquisition signal, and send the image acquisition signal to a controller.

In the embodiment of the application, the target control can be displayed by utilizing the code scanning terminal to scan the graphic code, and then the image acquisition signal is sent to the controller in response to the target operation of the user on the target control displayed on the upper computer, so that the user can start the spot inspection program of the coating equipment only by scanning the code, and the spot inspection efficiency is improved.

Based on the same inventive concept as the above-mentioned coating system, the embodiment of the present application further provides a spot inspection method of the coating system, where the coating system is the coating system shown in fig. 1 in the above-mentioned embodiment, fig. 5 shows a schematic flow chart of a spot inspection method of the coating system provided in one embodiment of the present application, and the spot inspection method of the coating system may be applied to an upper computer in the above-mentioned coating system, as shown in fig. 5, and the spot inspection method of the coating system may specifically include steps 510-520.

Note that, in the embodiments of the present application, the terms that are the same as those in the embodiments described above have the same meanings, and are not described herein again.

And 510, under the condition that the copying battery cell reaches a point detection point in a conveying path of the coating process, acquiring target images of target surfaces of the copying battery cells sent by a plurality of image acquisition devices.

Step 520, detecting the plurality of image capturing devices based on the target image, so as to obtain detection results of the plurality of image capturing devices.

In the embodiment of the application, under the condition that the spot inspection point of the profiling battery cell in the conveying path of the coating process is determined, the target image of the target surface of the profiling battery cell sent by the plurality of image acquisition devices is acquired, then the plurality of image acquisition devices are detected based on the target image, so that the detection result of the plurality of image acquisition devices can be obtained, the spot inspection is not needed manually, and the efficiency and the accuracy of the spot inspection are improved.

In some embodiments of the present application, the plurality of image capture devices includes a first image capture device and a second image capture device, the spot check site includes a first spot check site and a second spot check site, the first image capture device is located at the first spot check site, the second image capture device is located at the second spot check site, and the target image includes a first image and a second image.

Referring to fig. 6, step 510 may specifically include steps 5101-5102:

in step 5101, a first image, sent by a first image acquisition device, of a first surface of a target surface of an acquired profiling cell before encapsulation is acquired under the condition that the profiling cell is determined to reach a first point detection site.

In step 5102, under the condition that the copying electric core is determined to reach the second point detection point, which is sent by the second image acquisition device, a second image of the first surface of the copying electric core after the film is coated is acquired.

In the embodiment of the application, the images of the first surface of the collected profiling battery cell at the first point detection site and the second point detection site are respectively obtained, so that the image acquisition equipment of the first point detection site and the image acquisition equipment of the second point detection site can be respectively detected.

When an image acquisition device is used for acquiring an image of one surface of a profiling battery cell, the surface needs to occupy a compared area in the image, so that the subsequent calculation of the size information of a preset graph based on the image is facilitated, but because the profiling battery cell is large or the shooting capability of a camera is high, if the surface is completely shot in one image, the area occupied by the surface in the image is smaller, and the subsequent calculation is inconvenient.

To solve the above problem, step 5101 may specifically include:

acquiring a first sub-image and a second sub-image of a first surface in a target surface of the acquired profiling battery cell under the condition that the profiling battery cell reaches a first point detection point, which are sent by first image acquisition equipment;

and fusing the first sub-image and the second sub-image to obtain a first image.

The first sub-image and the second sub-image may be captured images of the first surface, each of the first sub-image and the second sub-image may include a partial region of the first surface, and the partial region of the first surface in the first sub-image and the partial region of the first surface in the second sub-image form an entire region of the first surface.

In some embodiments of the present application, when a first surface is photographed, two images are photographed on the first surface, and each image has a partial area of the first surface, for example, two thirds of the first surface may be included in each image, and then the two images may be spliced into a complete area of the first surface.

In one example, with continued reference to fig. 3 and 4, taking the image of side 33 to be taken as an example, side camera M may take two images of side 33, image 1 and image 2, respectively, with two-thirds of side 33 in image 1, two-thirds of side 33 in image 2, and the sides in image 1 and fig. 2 may be stitched into a finished side 33.

In some embodiments of the present application, for other surfaces in the target surface, the corresponding image may be obtained in the same manner as the first surface, which is not described herein.

In the embodiment of the application, under the condition that the profiling battery cell reaches the first point detection point is determined, the first sub-image and the second sub-image of the first surface in the target surface of the profiling battery cell are acquired, and the first sub-image and the second sub-image are fused to obtain the first image, so that the first surface occupies a relatively large area in the first image, the calculation of the first image is facilitated, the size information of a preset graph in the first image is improved, the calculation accuracy of the average value of the gray values of the target area is improved, and the detection accuracy of the image acquisition device is further improved.

In some embodiments of the present application, the target surface of the profiled cell is provided with spot check.

Referring to fig. 7, step 520 may specifically include steps 5201-5203:

step 5201, calculating to-be-spot inspection information of spot inspection pieces in the image according to any one of the first image and the second image.

Step 5202, comparing the point detection information to be detected of the point detection piece in the image with the reference point detection information of the point detection piece according to any one of the first image and the second image, and obtaining a comparison result of the images.

And step 5203, determining detection results of the plurality of image acquisition devices according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

In some embodiments of the present application, the information to be spot checked may include gray scale value and size information, and the reference spot check information may include reference gray scale value and reference size information.

Step 5202 may specifically include:

and comparing the gray value of the point-detected piece with the reference gray value of the point-detected piece in the image, and comparing the size information of the point-detected piece in the image with the reference size information of the point-detected piece to obtain a comparison result of the image.

In the embodiment of the application, the gray value of the point detection piece in the image is compared with the reference gray value of the point detection piece, and the size information of the point detection piece in the image is compared with the reference size information of the point detection piece, so that the comparison result of the image can be accurately obtained, and further the accurate detection of the image acquisition equipment is realized.

In some embodiments of the present application, the spot tile may include at least one region, and each region may include a preset pattern therein, which may be, but is not limited to, square, rectangle, circle, sector.

In one example, with continued reference to fig. 3, taking the preset pattern as a circle as an example, the spot check 35 includes four areas, namely, an area a, an area B, an area C, and an area D, each of which has a circle.

Step 5201 may specifically include:

respectively calculating the size information of each preset graph in the spot inspection piece in the image and the average value of the gray values of the target area in at least one area in the spot inspection piece in the image;

the comparing the gray value of the point-detected piece with the reference gray value of the point-detected piece in the image may specifically include:

determining a first difference value between the size information of each preset graph in the point-detected piece and the reference size information of each preset graph in the point-detected piece;

the comparing the size information of the spot check in the image with the reference size information of the spot check may specifically include:

and determining a second difference value between the average value and the average value of the reference gray values of the target area in at least one area in the spot inspection piece.

In some embodiments of the present application, for each preset pattern, the size information of the preset pattern may be calculated, and specifically, the size information of the preset pattern may be measured by using a measuring tool.

For each preset pattern, the first difference may be a difference between size information of the preset pattern and reference size information.

It should be noted that, for the film, the gray value of each region of the film and the size information of the preset pattern on the film are all preset. I.e. the above-mentioned reference size information and reference gray values are known.

In some embodiments of the present application, after the size information of each preset pattern is measured, for the preset pattern in any area, the measured size information of the preset pattern in the area may be differenced from the reference size information of the preset pattern in the area to obtain a first difference value.

In one example, with continued reference to fig. 3, taking area a as an example, after measuring the size information of the circle in area a, a difference between the size information and the reference size information of the circle may be taken as a first difference.

Similarly, the first difference between the size information of the measured circle in the area B, the area C, and the area D and the reference size information of the circle may be obtained by adopting the same calculation method as the first difference between the size information of the measured circle in the area a and the reference size information of the circle, which are not described herein.

For any region, the target region of the region may be other regions of the region except for the preset pattern. As shown in fig. 3, an area a is taken as an example, and the target area of the area a is other than the circle in the area a.

The second difference may be a difference between an average value of gray values of the target region in at least one region in the spot check in the image and an average value of reference gray values of the target region in at least one region in the spot check.

In some embodiments of the present application, the average value of the gray values of the target areas of at least one area in the spot-check may be the average value of the gray values of the target areas of each area in the spot-check, and may also be the average value of the gray values of the target areas of the plurality of areas.

In one example, with continued reference to fig. 3, the average value of the gray values of the target areas of at least one of the spot-check pieces may be the average value of the gray values of the target areas of each of the areas a, B, C, and D, that is, the average value of the gray values of the target areas of at least one of the spot-check pieces is plural, and is the average value of the gray values of the target areas of the area a, the average value of the gray values of the target areas of the area B, the average value of the gray values of the target areas of the area C, and the average value of the gray values of the target areas of the area D, respectively.

The average value of the gray values of the target areas of at least one area in the spot inspection piece may be the average value of the gray values of the target areas of the 4 areas, namely the area a, the area B, the area C and the area D. The average value of the gray values of the target area of at least one area in the spot inspection piece is one.

For example, if the average value of the gray values of the target area of the area a is 132, the average value of the gray values of the target area of the area B is 135, the average value of the gray values of the target area of the area C is 130, and the average value of the gray values of the target area of the area D is 137, the average value of the gray values of the target area in at least one area of the spot may be 132, 135, 130, and 137, or (132+135+130+137)/4=133.5.

In some embodiments of the present application, in a case where the average value of the gray values of the target areas in at least one area in the spot check is the average value of the gray values of the target areas of each area in the spot check, each area has a corresponding second difference value, for a certain area, the second difference value of the area is a difference value between the average value of the gray values of the target areas of the area and the reference gray value of the area.

In the case where the average value of the gradation values of the target areas in at least one of the areas in the spot check is the average value of the gradation values of the target areas of the plurality of areas, the second difference value is a difference between the average value of the gradation values of the target areas of the plurality of areas and the average value of the reference gradation values of the target areas of the plurality of areas.

In the embodiment of the application, the size information of each preset pattern in the point detection piece in the image and the average value of the gray values of the target area in at least one area in the point detection piece in the image are calculated respectively, then the first difference value of the size information of each preset pattern in the point detection piece in the image and the reference size information of each preset pattern in the point detection piece and the second difference value of the average value and the average value of the reference gray values of the target area in at least one area in the point detection piece are determined, and therefore the comparison result of the image can be obtained accurately.

In some embodiments of the present application, step 5203 may specifically include:

aiming at the comparison result of any one of the first image and the second image, if the comparison result is determined that the first difference value is smaller than a first preset difference value threshold value and the second difference value is smaller than a second preset difference value threshold value, determining that the detection result of the image acquisition equipment corresponding to the image is passing detection;

And determining that the detection result of the image acquisition equipment corresponding to the image is not passing under the condition that the comparison result is that the first difference value is not smaller than a first preset difference value threshold value and/or the comparison result is that the second difference value is not smaller than a second preset difference value threshold value.

The first preset difference threshold may be a preset threshold of the first difference. The second preset difference threshold may be a preset second difference threshold. The first preset difference threshold and the second preset difference threshold may be set according to the user requirement, which is not limited in the embodiment of the present application.

In some embodiments of the present application, for any one of the first image and the second image, if the comparison result corresponding to the image is that the first difference is smaller than the first preset difference threshold and the second difference is smaller than the second preset difference threshold, determining that the detection of the image capturing device that captures the image passes. If the comparison result corresponding to the image is that the first difference value is not smaller than a first preset difference value threshold value and/or the second difference value is not smaller than a second preset difference value threshold value, determining that the detection of the image acquisition equipment for acquiring the image is not passed.

In one example, with continued reference to fig. 2, 3 and 4, at station G of fig. 2, there are several cameras shown in fig. 4, where a side camera M is used to capture an image of a side 33, a side camera N is used to capture an image of another side opposite to the side 33, and if the captured images of the side 33 are compared with each other to determine that the detection of the side camera M is passed if the first difference is less than a first preset difference threshold and the second difference is less than a second preset difference threshold. If the comparison result of the photographed images of the side face 33 is that the first difference is not less than the first preset difference threshold and/or the second difference is not less than the second preset difference threshold, it is determined that the detection of the side face camera M is not passed.

In the embodiment of the application, for the first difference value and the second difference value calculated according to the image acquired by any image acquisition device, whether the detection of the image acquisition device passes or not can be accurately determined according to the relation between the first difference value and the first preset difference value threshold value and the relation between the second difference value and the second preset difference value threshold value.

In some embodiments of the present application, after determining that the comparison result is that the first difference is not less than the first preset difference threshold, the above-mentioned related method further includes:

And outputting the adjustment information of the target object so that after the target object is adjusted, the comparison result corresponding to the first image is that the first difference value is smaller than a first preset difference value threshold value and the comparison result corresponding to the second image is that the second difference value is smaller than a second preset difference value threshold value.

Wherein the target object may be an object for adjustment, the target object may include at least one of:

profiling the position of the battery cell;

the location of the plurality of image acquisition devices;

and the light sources correspond to the plurality of image acquisition devices.

In some embodiments of the present application, if it is determined that the comparison result is that the first difference is not less than the first preset difference threshold, it may be that the image capturing device or the profiling battery cell is askew, or that the light source of the image capturing device is not good, the adjustment information of the target object may be output, specifically, the positions of the profiling battery cell, the positions of the plurality of image capturing devices, and the light sources corresponding to the plurality of image capturing devices may be adjusted.

It should be noted that, when the positions of the plurality of image capturing devices are adjusted, only the positions of the image capturing devices whose comparison results are that the first difference is not smaller than the first preset difference threshold may be adjusted, and the positions of the image capturing devices do not need to be adjusted. Similarly, when the light sources of the plurality of image capturing devices are adjusted, only the light sources of the image capturing devices whose comparison result is that the first difference is not smaller than the first preset difference threshold value may be adjusted, and the adjustment of the light source of each image capturing device is not required.

In the embodiment of the application, after the comparison result is determined that the first difference value is not smaller than the first preset difference value threshold, the adjustment information of the target object can be output, so that after the target object is adjusted, the comparison result corresponding to the first image is that the first difference value is smaller than the first preset difference value threshold, and the comparison result corresponding to the second image is that the second difference value is smaller than the second preset difference value threshold, and therefore the image acquisition equipment can be detected by continuously adjusting the target object, and the detection accuracy of the image acquisition equipment is improved.

In some embodiments of the present application, when the comparison result is determined that the second difference is not less than the second preset difference threshold, determining that the detection result of the image capturing device corresponding to the image is that the detection is failed may specifically include:

returning to execute the step of obtaining the comparison result by calculating the gray value and the size information of the point detection piece based on the point detection piece in the image, comparing the gray value with the reference gray value of the point detection piece and comparing the size information with the reference size information of the point detection piece under the condition that the comparison result is determined that the second difference value is not smaller than the second preset difference value threshold;

And under the condition that the comparison result is that the number of times that the second difference value is not smaller than the second preset difference value threshold reaches the preset number of times, determining that the detection result of the image acquisition corresponding to the image is that the detection is not passed.

The preset times can be a preset threshold value of times when the determined comparison result is that the second difference value is not smaller than a second preset difference value threshold value, and the preset times can be set according to user requirements by oneself, and are not limited in the embodiment of the application.

In some embodiments of the present application, when it is determined that the comparison result of a certain image is that the second difference value is not less than the second preset difference value threshold, based on the point detection piece in the image again, calculating the gray value and the size information of the point detection piece, comparing the gray value with the reference gray value of the point detection piece, and comparing the size information with the reference size information of the point detection piece to obtain a comparison result, if the number of point detection reaches the preset number of times, and if the result of each point detection is that the second difference value is not less than the second preset difference value threshold, it may be determined that the detection result of the image acquisition corresponding to the image is that the detection is failed.

In the embodiment of the application, when the comparison result is determined that the second difference value is not smaller than the second preset difference value threshold, spot inspection can be repeatedly performed to judge whether the second difference value is not smaller than the second preset difference value threshold, so that the detection accuracy of the image acquisition equipment is improved.

In some embodiments of the present application, in order to facilitate clear understanding of the spot inspection method of the encapsulation system provided in the embodiments of the present application, another implementation manner of the spot inspection method of the encapsulation system provided in the embodiments of the present application is shown in fig. 8, where the spot inspection method of the encapsulation system includes steps 810-880.

Step 810, placing a profiling battery cell.

Step 820, sequentially passing through spot detection sites.

In this step 820, the profiled cell may be transported through the first and second spot sites in sequence by a transport assembly.

And 830, triggering the image acquisition equipment to take a picture.

Under the condition that the profiling battery cell reaches the first point detection point, triggering a first image acquisition device to acquire a first image of the target surface of the profiling battery cell, and under the condition that the profiling battery cell reaches the second point detection point, triggering a second image acquisition device to acquire a second image of the target surface of the profiling battery cell.

And step 840, checking the points.

Step 850, determining whether the spot check passes, if not, executing step 860, and if the spot check passes, executing step 870.

Step 860, normal operation.

Under the condition that the spot inspection result is confirmed to pass, the image acquisition equipment can be normally put into use.

And 870, searching for a reason and rechecking.

And under the condition that the spot inspection result does not pass, the reason is required to be searched, and then the coating system is adjusted, for example, at least one of the position of the profiling battery cell, the position of the image acquisition equipment and the light source corresponding to the image acquisition equipment can be adjusted, and spot inspection is performed again after the adjustment is finished.

As shown in FIG. 9, embodiments of the present application provide another implementation of the spot check method of the encapsulation system, which includes steps 910-970, as shown in FIG. 9.

In step 910, the host computer starts a one-touch point detection procedure in response to a target operation of a target control displayed on the host computer by a user.

In the step, a user can scan the graphic code in the upper computer through the code scanning terminal, then display a target control, and generate an image acquisition signal through target operation of the target control, so as to trigger a spot inspection program.

And step 920, the upper computer sends an image acquisition signal to the controller.

Step 930, the controller generates a control instruction.

In this step, the controller may generate a control instruction according to the image acquisition signal.

Step 940, the transfer assembly controls the movement of the profiling cell.

In this step, the transfer assembly may control the movement of the profiling cell in accordance with the control instructions.

And 950, moving the profiling cell to a first point detection position, and shooting a target surface.

In the step, after the profiling cell is determined to move to the first point detection site, the large surface of the profiling cell can be photographed first, after the two large surfaces are photographed, the upper computer replies the controller, the large surface is photographed to the completed command, then the controller generates a control command based on the command, the transmission component controls the profiling cell to move at the first point detection site, specifically, the transmission component moves to the position for photographing the side surface of the profiling cell, then the side camera is used for photographing the two side surfaces of the profiling cell, after the two side surfaces are photographed, the upper computer replies the controller, the side surface is photographed to the completed command, then the controller generates a control command based on the command, the transmission component controls the profiling cell to move at the first point detection site, specifically, the upper computer replies the controller, the completed command is photographed to the bottom surface after the bottom surface of the profiling cell is photographed by the side camera, then the controller generates a control command based on the command, and the transmission component transmits the control command to the second point detection site based on the control command.

And 960, moving the profiling cell to a second point detection site, and shooting a target surface.

The shooting process in this step is identical to the shooting process of the first point detection site, and will not be described here again.

In step 970, the upper computer detects the plurality of image capturing devices based on the target image of the target surface, so as to obtain detection results of the plurality of image capturing devices.

Based on the same inventive concept, the embodiment of the application also provides a spot inspection device of the coating system. The spot inspection device of the coating system provided in the embodiment of the present application is described in detail below with reference to fig. 10.

Fig. 10 is a schematic structural diagram of a spot inspection device of an encapsulation system according to an embodiment of the present application. As shown in fig. 10, the spot inspection device of the coating system may include:

a first obtaining module 1010, configured to obtain target images of target surfaces of the profiled electric core sent by the plurality of image acquisition devices when it is determined that the profiled electric core reaches a spot detection point in a conveying path of a coating process;

and the first detection module 1020 is configured to detect the plurality of image capturing devices based on the target image, so as to obtain detection results of the plurality of image capturing devices.

In some embodiments of the present application, the plurality of image capturing devices includes a first image capturing device and a second image capturing device, the spot includes a first spot and a second spot, the first image capturing device is located at the first spot, the second image capturing device is located at the second spot, and the target image includes a first image and a second image; the target surface of the profiling battery cell is other surfaces except the top surface of each surface of the profiling battery cell;

the first obtaining module 1010 may specifically include:

the first acquisition unit is used for acquiring a first image, which is sent by the first image acquisition equipment and is acquired, of a first surface of the target surface of the profiling battery cell before coating under the condition that the profiling battery cell reaches the first point detection point;

The second acquisition unit is used for acquiring a second image of the first surface of the profiling battery cell after the coating under the condition that the profiling battery cell reaches the second point detection point is determined, which is sent by the second image acquisition equipment.

In some embodiments of the present application, the target surface of the profiled cell is provided with a spot check;

the first detection module 1020 may specifically include:

a first calculation unit, configured to calculate, for any one of the first image and the second image, spot inspection information to be detected of the spot inspection piece in the image;

the first comparison unit is used for comparing the point detection information to be detected of the point detection piece in the image with the reference point detection information of the point detection piece aiming at any one of the first image and the second image to obtain a comparison result of the image;

and the first determining unit is used for determining the detection results of the plurality of image acquisition devices according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

In some embodiments of the present application, the to-be-spot-detected information includes a gray value and size information, and the reference spot-detected information includes a reference gray value and reference size information;

The first comparison unit may specifically be configured to:

comparing the gray value of the spot inspection piece in the image with the reference gray value of the spot inspection piece, and comparing the size information of the spot inspection piece in the image with the reference size information of the spot inspection piece to obtain a comparison result of the image.

In some embodiments of the present application, the spot check includes at least one region, each region including a preset pattern;

the first computing unit may be specifically configured to:

respectively calculating the size information of each preset graph in the spot inspection piece in the image and the average value of gray values of target areas in at least one area in the spot inspection piece in the image, wherein the target area in each area is an area except the preset graph in the area;

the first comparison unit may specifically be configured to:

determining a first difference value between the size information of each preset pattern in the spot inspection piece and the reference size information of each preset pattern in the spot inspection piece;

and determining a second difference value between the average value and the average value of the reference gray values of the target area in at least one area in the spot inspection.

In some embodiments of the present application, the first determining unit may specifically be configured to:

for a comparison result of any one of the first image and the second image, if the comparison result is determined that the first difference value is smaller than a first preset difference value threshold value and the second difference value is smaller than a second preset difference value threshold value, determining that a detection result of an image acquisition device corresponding to the image is passing detection;

and determining that the detection result of the image acquisition equipment corresponding to the image is not passed under the condition that the comparison result is that the first difference value is not smaller than the first preset difference value threshold value and/or the comparison result is that the second difference value is not smaller than the second preset difference value threshold value.

In some embodiments of the present application, the first detection module 1020 may further include:

the output unit is used for outputting the adjustment information of the target object so that after the target object is adjusted, the comparison result is that the first difference value is smaller than the first preset difference value threshold value and the second difference value is smaller than the second preset difference value threshold value;

wherein the target object comprises at least one of:

The position of the profiling battery cell;

the positions of the plurality of image acquisition devices;

and the light sources correspond to the plurality of image acquisition devices.

returning to execute the steps of calculating the gray value and the size information of the point detection piece based on the point detection piece in the image, comparing the gray value with the reference gray value of the point detection piece, and comparing the size information with the reference size information of the point detection piece to obtain a comparison result under the condition that the comparison result is that the second difference value is not smaller than a second preset difference value threshold;

and under the condition that the comparison result is that the times of the second difference value not smaller than a second preset difference value threshold value reach the preset times, determining that the detection result of the image acquisition corresponding to the image is that the detection is not passed.

In some embodiments of the present application, the first obtaining unit is specifically configured to:

acquiring a first sub-image and a second sub-image of a first surface in a target surface of the profiling battery cell, which are transmitted by the first image acquisition equipment and are acquired under the condition that the profiling battery cell reaches the first point detection point, wherein the first sub-image and the second sub-image both comprise partial areas of the first surface, and the partial areas of the first surface in the first sub-image and the partial areas of the first surface in the second sub-image form all areas of the target surface;

And fusing the first sub-image and the second sub-image to obtain the first image.

It should be clear that the present application is not limited to the particular arrangements and processes described above and illustrated in the drawings. For the sake of brevity, a detailed description of known methods is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications, and additions, or change the order between steps, after appreciating the spirit of the present application.

The functional blocks shown in the above-described structural block diagrams may be implemented in hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine readable medium or transmitted over transmission media or communication links by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transfer information. Examples of machine-readable media include electronic circuitry, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and the like. The code segments may be downloaded via computer networks such as the internet, intranets, etc.

It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be different from the order in the embodiments, or several steps may be performed simultaneously.

Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to being, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware which performs the specified functions or acts, or combinations of special purpose hardware and computer instructions.

While the present application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the present application, and in particular, the technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. A coating system, the system comprising: the system comprises a transmission assembly, a plurality of image acquisition devices and an upper computer;

the conveying assembly is used for conveying the profiling battery cell on a conveying path of the coating procedure under the condition that spot inspection is required to be carried out on the coating system;

the plurality of image acquisition devices are used for acquiring target images of target surfaces of the profiling battery cells under the condition that the profiling battery cells are determined to reach point detection points in a conveying path of the coating process; the target image comprises a first image and a second image;

the upper computer is used for detecting the plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices;

The target surface of the profiling battery cell is provided with a spot check sheet;

the upper computer is specifically configured to calculate, for any one of the first image and the second image, point inspection information of the point inspection piece in the image, compare the point inspection information of the point inspection piece in the image with reference point inspection information of the point inspection piece, obtain a comparison result of the image, and determine a detection result of the image acquisition device according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

2. The system of claim 1, wherein the plurality of image acquisition devices comprises a first image acquisition device and a second image acquisition device, the spot comprises a first spot and a second spot, the first image acquisition device is located at the first spot, and the second image acquisition device is located at the second spot;

the first image acquisition equipment is used for acquiring a first image of a first surface of the target surface of the profiling battery cell before coating under the condition that the profiling battery cell reaches the first point detection point;

The second image acquisition equipment is used for acquiring a second image of the first surface of the profiling battery cell after coating under the condition that the profiling battery cell reaches the second spot inspection site;

the target surface of the profiling battery cell is any one surface of other surfaces except the top surface in the surfaces of the profiling battery cell.

3. The system of any of claims 1-2, wherein the host computer is further configured to send an image acquisition signal to the controller;

the system further comprises:

the conveying assembly is specifically used for conveying the profiling battery cells on a conveying path of the coating process based on the control instruction.

4. The system of claim 3, wherein the upper computer includes a graphic code thereon, the upper computer being specifically configured to send an image acquisition signal to the controller in response to a user's target operation on a target control displayed on the upper computer;

the target control is a control which is displayed on the upper computer after the code scanning terminal scans the graphic code.

5. A spot inspection method of an encapsulation system, the method comprising:

under the condition that the copying battery cell reaches a spot detection point in a conveying path of a coating process, acquiring target images of target surfaces of the copying battery cells sent by a plurality of image acquisition devices; the target surface of the profiling battery cell is provided with a spot check sheet; the target image comprises a first image and a second image;

detecting the plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices;

the detecting the plurality of image acquisition devices based on the target image to obtain detection results of the plurality of image acquisition devices comprises:

calculating to-be-spot-inspected information of the spot inspection piece in the image aiming at any one image of the first image and the second image;

comparing the point detection information to be detected of the point detection piece in the image with the reference point detection information of the point detection piece aiming at any one image of the first image and the second image to obtain a comparison result of the images;

and determining detection results of the plurality of image acquisition devices according to the comparison result corresponding to the first image and the comparison result corresponding to the second image.

6. The method of claim 5, wherein the plurality of image acquisition devices comprises a first image acquisition device and a second image acquisition device, the spot comprises a first spot and a second spot, the first image acquisition device is located at the first spot, the second image acquisition device is located at the second spot, and the target image comprises a first image and a second image; the target surface of the profiling battery cell is other surfaces except the top surface of each surface of the profiling battery cell;

the acquiring the target image of the target surface of the profiling battery cell sent by the image acquisition devices comprises the following steps:

acquiring a first image, which is sent by the first image acquisition equipment and is acquired, of a first surface of a target surface of the profiling battery cell before coating under the condition that the profiling battery cell reaches the first point detection point; the first surface is any one surface of other surfaces except the top surface of each surface of the profiling battery cell;

acquiring a second image of the first surface of the profiling battery cell after coating under the condition that the profiling battery cell reaches the second spot inspection point and transmitted by the second image acquisition equipment.

7. The method of claim 5, wherein the information to be spot checked comprises gray scale values and size information, and the reference spot check information comprises reference gray scale values and reference size information;

comparing the point detection information to be detected of the point detection piece in the image with the reference point detection information of the point detection piece to obtain a comparison result of the image, wherein the comparison result comprises the following steps:

8. The method of claim 7, wherein the spot tile comprises at least one region, each region comprising a predetermined pattern;

the calculating the to-be-spot-detected information of the spot-detected piece in the image comprises the following steps:

The comparing the gray value of the point inspection piece in the image with the reference gray value of the point inspection piece comprises the following steps:

the comparing the size information of the spot check in the image with the reference size information of the spot check includes:

9. The method of claim 8, wherein the determining the detection results of the plurality of image capturing devices according to the comparison result corresponding to the first image and the comparison result corresponding to the second image comprises:

10. The method of claim 9, wherein after determining that the comparison result is that the first difference is not less than the first preset difference threshold, the method further comprises:

outputting adjustment information of a target object, so that after the target object is adjusted, the comparison result is that the first difference value is smaller than the first preset difference value threshold value and the second difference value is smaller than the second preset difference value threshold value;

wherein the target object comprises at least one of:

the position of the profiling battery cell;

the positions of the plurality of image acquisition devices;

and the light sources correspond to the plurality of image acquisition devices.

11. The method according to claim 9, wherein, in the case where it is determined that the comparison result is that the second difference is not smaller than a second preset difference threshold, determining that the detection result of the image capturing device corresponding to the image is that detection is failed includes:

12. The method of claim 5, wherein acquiring the first image of the first one of the target faces of the profiled cell transmitted by the first image acquisition device if it is determined that the profiled cell reaches the first spot, comprises: