CN216146290U

CN216146290U - Battery pack detection equipment

Info

Publication number: CN216146290U
Application number: CN202120645451.6U
Authority: CN
Inventors: 温英光
Original assignee: Peiyu Photoelectric Technology Shanghai Co ltd
Current assignee: Peiyu Photoelectric Technology Shanghai Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-03-29
Anticipated expiration: 2031-03-30

Abstract

The application discloses battery pack detection equipment, the structure includes: carrying device and imaging equipment. The bearing device is used for bearing the battery assembly to be detected, and the imaging equipment is arranged towards the battery assembly borne on the bearing device and used for acquiring the image of the battery assembly. The imaging apparatus includes a first image capture device and a second image capture device disposed adjacent to each other, and wherein an optical axis of the first image capture device is disposed obliquely with respect to an optical axis of the second image capture device such that a field deviation of the first image capture device and the second image capture device on the battery assembly is reduced.

Description

Battery pack detection equipment

Technical Field

The application relates to the field of solar cell detection, in particular to a battery pack detection device.

Background

The solar cell module consists of a high-efficiency single crystal or polycrystalline solar cell, low-iron super white suede toughened glass, a packaging material, a functional back plate, an interconnection bar, a bus bar, a junction box and an aluminum alloy frame. Solar cells may develop various defects such as silicon material diffusion, passivation, and cracks during the manufacturing process. These defects reduce the conversion efficiency of the solar cell and may present a potential hazard for later use, so defect detection is important for quality control of the solar cell. In the process of processing the battery assembly, when the battery assembly is detected before the lamination process, the electroluminescent image and the appearance image of the battery assembly need to be detected. EL cameras that illuminate a battery pack and appearance cameras that look like a battery pack are currently in common use by the industry. Because the width of the current battery pack is generally 1.6-2.5 meters, the pack is generally placed downwards, and the transmission height of a solar battery pack production line is generally about 0.95 meter, namely, the object distance of a camera is within a certain range. When the battery pack reaches the photographing area, because the object distance is limited, a single camera cannot photograph the full battery pack, so that referring to fig. 1, it is common in the industry to use multiple cameras for photographing, typically 4 EL cameras 31 and 4 appearance cameras 32. Because the width of the battery pack has a certain specification, and the overall specification of the detection equipment should be reduced as much as possible, the arrangement mode of the cameras at present is that 4 EL31 cameras are uniformly distributed below the pack. Appearance camera 32 is horizontally mounted adjacent to EL camera 31 in the component width direction.

In addition, referring to fig. 2, in the conventional mounting method, when the EL camera 31 and the appearance camera 32 are horizontally mounted adjacent to each other, the two cameras need to be moved away from each other when mounted because the cameras themselves occupy a certain space. However, the camera avoids along the length direction of the battery assembly or along the width direction of the assembly, and images required for detection are the same area of the assembly. In order to ensure that both cameras can shoot all images, whether in an EL camera or a design camera,

parts

41 and 42 of the partial images which are not needed for the detection necessarily occur, so that the waste of the camera image range, namely the waste of pixels, is generated. When the cameras are mounted adjacent to each other in the width direction of the assembly, much waste is generated.

In order to solve the technical problems of too much useless imaging range and even pixel waste caused by adjacent installation of cameras along the width direction of a battery pack in the prior art, no effective solution is provided at present.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a battery pack inspection apparatus to at least solve the technical problems of excessive useless imaging range and even pixel waste caused by adjacent installation of cameras along the width direction of a battery pack in the prior art.

According to an embodiment of the present application, there is provided a battery pack detection apparatus, the detection apparatus being used in the field of battery pack detection, the structure of the battery pack detection apparatus including: carrying device and imaging equipment. The bearing device is used for bearing the battery assembly to be detected, and the imaging equipment is arranged towards the battery assembly borne on the bearing device and used for acquiring the image of the battery assembly. The imaging device comprises a first image acquisition device and a second image acquisition device which are adjacently arranged, wherein the optical axis of the first image acquisition device is obliquely arranged relative to the optical axis of the second image acquisition device, so that the visual field deviation of the first image acquisition device and the second image acquisition device on the battery component is reduced.

Optionally, at least one of the first image capturing device and the second image capturing device is disposed obliquely with respect to a direction perpendicular to the surface of the battery assembly to be detected.

Optionally, the first image capture device is an EL camera and the second image capture device is an appearance camera.

Optionally, the optical axis of the second image capturing device is arranged along a direction perpendicular to the surface to be detected of the battery assembly, and the optical axis of the first image capturing device is arranged obliquely with respect to the direction perpendicular to the surface to be detected of the battery assembly.

Optionally, the imaging device comprises a camera mounting plate for mounting the first image acquisition device, and the mounting surface of the camera mounting plate is arranged obliquely relative to the surface to be detected of the battery pack.

Optionally, the optical axis of the first image capturing device is arranged along a direction perpendicular to the surface to be detected of the battery assembly, and the optical axis of the second image capturing device is arranged obliquely with respect to the direction perpendicular to the surface to be detected of the battery assembly.

Optionally, the imaging device comprises a camera mounting plate for mounting the second image acquisition device, and the mounting surface of the camera mounting plate is arranged obliquely relative to the surface to be detected of the battery assembly.

Therefore, the technical problem in the prior art is solved through the technical scheme of the embodiment, and the embodiment is suitable for detection related to the solar cell module and has the following advantages:

1. when the camera images, the appearance camera can fully utilize the imaging range;

2. the image waste is much less compared to the image waste caused by the mutual interference of two cameras.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic view of the relative positions of an image forming apparatus and a battery pack according to the related art.

Fig. 2 is a schematic view of the relative fields of view of the imaging devices according to the prior art when placed adjacent horizontally.

FIG. 3 is a schematic diagram of a battery pack inspection apparatus according to an embodiment of the present application.

Detailed Description

It should be noted that, in the present disclosure, the embodiments and features of the embodiments may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the technical solutions of the present disclosure better understood by those skilled in the art, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present disclosure and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances for describing the embodiments of the disclosure herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Fig. 1 is a schematic diagram of a battery pack detection apparatus according to the present embodiment. Referring to fig. 1, the battery pack inspection apparatus includes: a carrier 10 and an imaging device 30. The carrying device 10 is used for carrying a battery assembly 20 to be tested, and the imaging device 30 is disposed toward the battery assembly 20 carried on the carrying device 10 for capturing an image of the battery assembly 20. The imaging apparatus 30 includes a first image pickup device 31 and a second image pickup device 32 which are adjacently disposed. Wherein, the optical axis of the first image capturing device 31 is obliquely arranged relative to the optical axis of the second image capturing device 32, so that the field deviation between the first image capturing device 31 and the second image capturing device 32 on the battery assembly 20 is reduced.

As described in the background art, when an EL camera and an appearance camera in the conventional battery pack detection apparatus are installed horizontally and adjacently, the cameras occupy a certain space, and the two cameras need to be mutually avoided during installation, but no matter the cameras are avoided along the length direction or the width direction of the pack, images required for detection are the same region of the pack. In order to ensure complete photographing in the detection of the two cameras, no matter the EL camera or the appearance camera, a part of the image is inevitably unnecessary for the detection, and thus the waste of the image range of the camera, that is, the waste of pixels, is generated. When the cameras are mounted adjacent to each other in the width direction of the assembly, more pixels are wasted.

In order to reduce the pixel waste, referring to fig. 3, an optical axis of the first image capturing device 31 included in the imaging device 30 of the battery pack detection apparatus is inclined with respect to an optical axis of the second image capturing device 32, so that the field deviation between the first image capturing device 31 and the second image capturing device 32 on the battery pack 20 is reduced, and the pixel waste is reduced.

Therefore, when the battery pack detection device is used, the problems that when cameras are installed adjacently along the width direction of the pack, the imaging range of useless cameras is large, and pixel waste is large can be solved.

Preferably, the fields of view of the first image capturing device 31 and the second image capturing device 32 on the battery assembly 20 completely coincide, thereby minimizing pixel waste.

Alternatively, referring to fig. 1, the battery pack 20 inspection apparatus includes a first image pickup device 31 and a second image pickup device 32. At least one of the first image capturing device 31 and the second image capturing device 32 is disposed obliquely with respect to a direction perpendicular to the surface to be detected of the battery pack 20.

Specifically, in order to achieve the purpose that the deviation of the field of view of the two image acquisition devices is reduced, the waste of pixels is reduced. In the present embodiment, at least one of the two image capturing devices is arranged to be inclined with respect to the plane perpendicular to the surface to be detected of the battery assembly 20, so that the fields of view of the first image capturing device 31 and the second image capturing device 32 on the plane to be detected of the battery assembly 20 can be adjusted by arranging the image capturing devices to be inclined with respect to the plane to be detected of the battery assembly 20. So that the deviation of the field of view of the first image capturing device 31 and the second image capturing device 32 on the surface to be inspected of the battery assembly 20 is reduced.

Preferably, the obliquely arranged image capturing device may be one of the first image capturing device 31 or the second image capturing device 32.

Alternatively, referring to fig. 1, the battery pack 20 inspection apparatus includes a first image pickup device 31 and a second image pickup device 32. The first image pickup device 31 is an EL camera and the second image pickup device 32 is an appearance camera.

Alternatively, the first image pickup device 31 is an EL camera, and the second image pickup device 32 is an appearance camera. In the process of manufacturing the battery pack 20, when the battery pack 20 is inspected before the lamination process, it is necessary to inspect the electroluminescence image and the appearance image of the battery pack 20, and therefore, an EL camera 31 that emits light from the battery pack 20 and an appearance camera 32 that images the appearance of the battery pack 20, which are currently commonly used in the industry, are used. And the EL camera 31 and the appearance camera 32 are disposed adjacent to each other in the width direction of the battery assembly 20.

Alternatively, as shown in fig. 1, the optical axis of the second image capturing device 32 (i.e., the appearance camera) is arranged in a direction perpendicular to the surface to be inspected of the battery assembly 20, and the optical axis of the first image capturing device 31 (i.e., the EL camera) is arranged obliquely with respect to the direction perpendicular to the surface to be inspected of the battery assembly 20. Therefore, the appearance of the surface to be detected of the battery assembly 20 is detected by the second image acquisition device 32 which is over against the surface to be detected of the battery assembly 20 in this way, so that the influence of the inclined arrangement on the appearance image can be avoided. Therefore, the visual field deviation of the first image acquisition device 31 and the second image acquisition device 32 on the battery assembly 20 is reduced, and the accuracy of appearance detection of the battery assembly 20 is also ensured.

Specifically, referring to fig. 1, the battery pack 20 detection apparatus includes an imaging apparatus 30. The imaging apparatus 30 includes a camera mounting plate 33 for mounting the first image pickup device 31, and a mounting surface of the camera mounting plate 33 is disposed obliquely with respect to a surface to be inspected of the battery pack 20.

Optionally, there is a camera mounting plate 33 at the lower part of the first image capturing device 31. The camera mounting plate 33 is a trapezoidal mounting plate having a certain angle. The camera mounting plate 33 enables the first image pickup device 31 thereon to have the same angle as the camera mounting plate 33. The angle of the camera mounting plate 33 may be set with the relative field of view deviation of the first image capturing device 31 and the second image capturing device 32 so that the field of view deviation of the first image capturing device 31 and the second image capturing device 32 is relatively reduced. Wherein the camera mounting plate 33 and the first image capturing device 31 together achieve the purpose of tilting the optical axis of the first image capturing device 31 with respect to the surface to be detected of the battery assembly 20.

Specifically, the optical axis of the first image capturing device 31 is disposed in a direction perpendicular to the surface to be detected of the battery assembly 20, and the optical axis of the second image capturing device 32 is disposed obliquely with respect to the direction perpendicular to the surface to be detected of the battery assembly 20.

Alternatively, the second image capturing device 32 of the two image capturing devices is disposed obliquely with respect to the surface to be detected of the battery assembly 20, and the first image capturing device 31 is disposed vertically with respect to the surface to be detected of the battery assembly 20. The field of view of the second image acquisition device 32 on the surface to be detected of the battery assembly 20 can thus be adjusted by means of the image acquisition device arranged obliquely with respect to the surface to be detected of the battery assembly 20. So that the deviation of the field of view of the first image capturing device 31 and the second image capturing device 32 on the surface to be inspected of the battery assembly 20 is reduced.

Specifically, the imaging apparatus 30 includes a camera mounting plate 33 for mounting the second image pickup device 32, and a mounting surface of the camera mounting plate 33 is disposed obliquely with respect to a surface to be inspected of the battery pack 20.

Therefore, the technical problem in the prior art is solved through the technical scheme of the embodiment, and the embodiment is suitable for the detection field related to the solar cell module and has the following advantages:

2. the pixel waste is much less than that caused by two phases interfering with each other.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the description of the present disclosure, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are presented only for the convenience of describing and simplifying the disclosure, and in the absence of a contrary indication, these directional terms are not intended to indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the disclosure; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery assembly detection apparatus comprising: a carrier device (10) and an imaging apparatus (30), wherein the carrier device (10) is used for carrying a battery assembly (20) to be tested, and the imaging apparatus (30) is arranged towards the battery assembly (20) carried on the carrier device (10) for capturing an image of the battery assembly (20),

the imaging device (30) comprises a first image acquisition arrangement (31) and a second image acquisition arrangement (32) arranged adjacently, and wherein

The optical axis of the first image acquisition device (31) is arranged obliquely relative to the optical axis of the second image acquisition device (32) such that the field of view deviation of the first image acquisition device (31) and the second image acquisition device (32) on the battery assembly (20) is reduced.

2. The battery pack inspection apparatus according to claim 1, wherein at least one of the first image capturing device (31) and the second image capturing device (32) is disposed obliquely with respect to a direction perpendicular to a surface to be inspected of the battery pack (20).

3. The battery pack detection apparatus according to claim 2, wherein the first image capturing device (31) is an EL camera and the second image capturing device (32) is an appearance camera.

4. The battery pack inspection apparatus according to claim 3, wherein the optical axis of the second image pickup device (32) is disposed in a direction perpendicular to the face to be inspected of the battery pack (20), and the optical axis of the first image pickup device (31) is disposed obliquely with respect to the direction perpendicular to the face to be inspected of the battery pack (20).

5. The battery pack inspection apparatus according to claim 4, wherein the imaging apparatus includes a camera mounting plate (33) for mounting the first image pickup device (31), and a mounting surface of the camera mounting plate (33) is disposed obliquely with respect to a surface to be inspected of the battery pack (20).

6. The battery pack inspection apparatus according to claim 3, wherein the optical axis of the first image pickup device (31) is disposed in a direction perpendicular to the face to be inspected of the battery pack (20), and the optical axis of the second image pickup device (32) is disposed obliquely with respect to the direction perpendicular to the face to be inspected of the battery pack (20).

7. The battery pack inspection apparatus according to claim 6, characterized in that the imaging apparatus (30) includes a camera mounting plate (33) for mounting the second image pickup device (32), and a mounting surface of the camera mounting plate (33) is disposed obliquely with respect to a surface to be inspected of the battery pack (20).