CN221056344U - A battery cell detection device - Google Patents

Abstract

The present application relates to the field of battery technology, and discloses a battery cell detection device, which includes a loading platform and an image acquisition component, which are arranged at intervals along a first direction; the loading platform is used to place the battery cell to be detected; the image acquisition component includes a first annular light source and a first camera mechanism, and the loading platform, the battery cell, the first annular light source and the first camera mechanism are arranged in sequence along the first direction; the first annular light source is used to emit a first light to the battery cell, and the first camera mechanism is used to shoot the battery cell to obtain an image of the battery cell; the distance between the orthographic projection of the end of the first annular light source closest to the battery cell on the first plane and the orthographic projection of the part to be detected of the battery cell on the first plane is L, and the shortest distance from the end of the first annular light source closest to the battery cell to the loading platform is H, and H/L≤tan30°. The battery cell detection device disclosed in the present application can detect the battery cell and pick out the battery cell that produces wiredrawing.

Description

A battery cell detection device

Technical Field

The present application relates to the field of battery technology, and in particular to a battery cell detection device.

Background technique

In order to protect the safety of battery cell transportation and shell entry, it is usually necessary to coat the battery surface with a layer of film after the battery and the top cover are welded. The bottom of the film is fixed with blue tape, and the contact position with the top cover is heated and melted with a hot melt block to fix the film and the plastic frame on the top cover together. During this process, if the contact between the hot melt block and the film or the top cover is poor or there are impurities at the contact position, it will cause the film to draw at the hot melting point. The drawing may become impurities when the cover is subsequently welded to the shell and cause holes, thereby affecting the quality of the battery cell.

Utility Model Content

The present application provides a battery cell detection device, which can detect battery cells and pick out battery cells that produce wiredrawing to prevent the wiredrawing from affecting the welding of the battery cells.

The present application provides a battery cell detection device, comprising a loading platform and an image acquisition component, wherein the loading platform and the image acquisition component are arranged at intervals along a first direction;

The mounting platform is used to place the battery cell to be inspected, and the part of the battery cell to be inspected is arranged toward the image acquisition component;

The image acquisition component includes a first annular light source and a first camera mechanism, wherein the first annular light source is located between the first camera mechanism and the mounting platform, and the mounting platform, the battery cell, the first annular light source and the first camera mechanism are arranged in sequence along the first direction;

The first annular light source is used to emit a first light to a surface of the battery cell facing the first annular light source, and the first imaging mechanism is used to receive the first light reflected by the battery cell and photograph the battery cell to acquire an image of a surface of the battery cell for receiving the first light;

The distance between the orthographic projection of the end of the first annular light source closest to the battery cell on the first plane and the orthographic projection of the part to be detected of the battery cell on the first plane is L, the shortest distance from the end of the first annular light source closest to the battery cell to the mounting table is H, H/L≤tan30°, and the first plane is a plane perpendicular to the first direction.

The battery cell detection device provided by the present application is provided with a first annular light source and a first camera mechanism, wherein the first light source is used to emit a first light to the surface of the battery cell, and the first camera mechanism is used to collect images of the battery cell. By designing, H/L≤tan30°, that is, when the first annular light source emits the first light to the battery cell, the incident angle between the first light and the battery cell is small, so that more first light can be irradiated to the part where the envelope produces wiredrawing, so that the outline of the wiredrawing can be clearly illuminated, and the image of the battery cell taken by the first camera mechanism can clearly show the outline of the wiredrawing, which is conducive to the detection of the battery cell. In addition, since the first annular light source is an annular structure, when the first light is emitted to the battery cell, the first light can be irradiated to the surface of the battery cell in multiple directions, so that the outline of the wiredrawing can be further clearly illuminated, and the accuracy of the battery cell detection can be improved. When it is detected that the battery cell has wiredrawing, the battery cell with wiredrawing can be picked out in time, so as to avoid the wiredrawing affecting the welding of the battery cell.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of an overall structure of a battery cell detection device in an embodiment of the present application;

FIG2 is a side view of the battery cell detection device in FIG1 ;

FIG3 is a schematic diagram showing the working principle of the image acquisition component in an embodiment of the present application;

FIG4 is a schematic diagram of the positional relationship between the first annular light source and the part to be detected of the battery cell in the embodiment of the present application;

FIG5 is a schematic diagram of the structures of a second annular light source and a second camera mechanism in an embodiment of the present application;

FIG6 is a top view of a battery cell detection device in an embodiment of the present application;

FIG7 is another overall structural diagram of the battery cell detection device in the embodiment of the present application;

FIG. 8 is a side view of the battery cell detection device in FIG. 6 .

In the figure:

100-loading table; 200-battery cell; 300-fixing mechanism; 310-support column; 320-connecting frame; 321-second guide rail; 400-image acquisition component; 410-first annular light source; 411-first through hole; 420-first camera mechanism; 430-second annular light source; 431-second through hole; 440-second camera mechanism; 500-moving mechanism; 510-fixing frame; 511-first guide rail; 512-pin hole; 520-first connecting piece; 530-second connecting piece; 540-third connecting piece; 600-sorting mechanism; 700-transmission mechanism; 710-transmission line.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

1 and 2 , the battery cell detection device in the embodiment of the present application may include a loading table 100, a fixing mechanism 300 and an image acquisition component 400, wherein the loading table 100 may be used to place the battery cell 200 to be detected, and when the battery cell 200 is placed on the loading table 100, its initial position is that the large surface of the battery cell 200 contacts the surface of the loading table 100.

Referring to FIGS. 1 to 3 , the image acquisition assembly 400 is spaced apart from the mounting platform 100 along a first direction, and the first direction can be understood as a direction perpendicular to the large surface of the battery cell 200 when the battery cell 200 is in an initial position on the mounting platform 100. The image acquisition assembly 400 includes a first annular light source 410 and a first camera mechanism 420, and the mounting platform 100, the battery cell 200, the first annular light source 410 and the first camera mechanism 420 are arranged in sequence along the first direction. The first annular light source 410 is used to emit a first light to a surface of the battery cell 200 facing the first annular light source 410, and the surface of the battery cell 200 can reflect the first light after receiving the first light, and the reflected first light can be received by the first camera mechanism 420. The first camera mechanism 420 is also used to shoot a surface of the battery cell 200 that reflects the first light to obtain an image of the surface of the battery cell 200.

Specifically, the middle of the first annular light source 410 has a first through hole 411, one end of the first through hole 411 is open toward the first camera mechanism 420, and the other end is open toward the part to be detected of the battery cell 200. When the first light emitted by the first annular light source 410 is reflected by the surface of the battery cell 200, the reflected first light can be received by the first camera mechanism 420 after passing through the first through hole 411. In this embodiment, by providing the first through hole 411, it is not only convenient for the reflected first light to pass through, but also allows the reflected first light to be emitted more concentratedly toward the first camera mechanism 420, so that the first camera mechanism 420 can receive more first light, thereby ensuring the clarity of the image when acquiring the image of the part to be detected of the battery cell 200.

The battery cell detection device in this embodiment may further include a processing module, which may process the image of the battery cell 200 captured by the image acquisition component 400 to detect whether the image shows a wire drawing outline. Furthermore, when a wire drawing outline is detected in the image, an error may be reported so that the operator can understand the production situation in a timely manner.

The fixing mechanism 300 may include two support columns 310 and a connecting frame 320 located between the two support columns 310, and the two ends of the connecting frame 320 are respectively connected to the two support columns 310. The two support columns 310 are respectively located on opposite sides of the mounting platform 100, and the two support columns 310 can be arranged along the second direction. The second direction can be understood as the direction perpendicular to the width and height of the battery cell 200 when the battery cell 200 is in the initial position on the mounting platform 100, that is, the second direction is perpendicular to the first direction. The first annular light source 410 and the first camera mechanism 420 can be installed on the connecting frame 320 so that the first annular light source 410 and the first camera mechanism 420 remain stable during the process of detecting the battery cell.

In this embodiment, as shown in FIG. 4 , assuming that the distance between the orthographic projection of the end of the first annular light source 410 closest to the battery cell 200 on the first plane and the orthographic projection of the part to be detected of the battery cell 200 on the first plane is L, the shortest distance from the end of the first annular light source 410 closest to the battery cell 200 to the mounting table 100 is H, and the first plane is a plane perpendicular to the first direction, then H/L≤tan30°. In this embodiment, the part to be detected of the battery cell 200 can be understood as the location where the film is hot-melt-connected to the plastic under the cover. As can be seen from FIG. 4 , when H/L≤tan30°, it can also be understood that the incident angle between the first light emitted by the first annular light source 410 and the battery cell 200 is less than or equal to 30°, that is, the incident angle at this time is small, which enables more first light to be irradiated to the portion where the coating produces wire drawing, and then the first light is reflected from the middle of the first annular light source 410, so that the reflected first light can be more concentratedly received by the first camera mechanism 420, so that the outline of the wire drawing can be clearly irradiated, and the image of the battery cell 200 taken by the first camera mechanism 420 can clearly show the outline of the wire drawing, which is conducive to the detection of the battery cell 200. In addition, since the first annular light source 410 is an annular structure, when emitting the first light to the battery cell 200, the first light can be irradiated to the surface of the battery cell 200 from multiple directions, so that the outline of the wire drawing can be further clearly irradiated, and the accuracy of the battery cell detection can be improved.

The distance between the first camera mechanism 420 and the first annular light source 410 is 200±20 mm, which ensures that the first camera mechanism 420 can receive sufficient first light reflected by the battery cell 200 , thereby facilitating clear display of the brushed outline in the image of the battery cell 200 taken by the first camera mechanism 420 .

In some embodiments, the battery cell detection device may further include a flipping mechanism (not shown in the figure), which can be used to flip the battery cell 200 placed on the mounting table 100, so that the undetected part of the battery cell 200 to be detected can be directly opposite the image acquisition component 400, so that the image acquisition component 400 can take pictures of different surfaces of the battery cell 200, thereby realizing the detection of each surface of the battery cell 200. Specifically, when the battery cell 200 is detected, the two large surfaces of the battery cell 200 and the two wide and high surfaces of the battery cell 200 are both provided with hot melting points, so that when a battery cell 200 is detected, the flipping mechanism flips the battery cell 200 three times to realize the detection of the four surfaces of the battery cell 200.

In some embodiments, with continued reference to FIG. 1 and FIG. 2 , the battery cell detection device may further include a moving mechanism 500, which may be used to drive the first annular light source 410 and/or the first camera mechanism 420 to move along the first direction or along the second direction. Specifically, the moving mechanism 500 may include a fixed frame 510, a first connecting member 520, and a second connecting member 530, wherein the fixed frame 510 is mounted on the connecting frame 320, and a first guide rail 511 extending along the first direction is provided on the fixed frame 510, and the first connecting member 520 and the second connecting member 530 are respectively mounted on the first guide rail 511, and the first connecting member 520 can slide relative to the first guide rail 511 along the first direction, and the second connecting member 530 can move relative to the first guide rail 511 along the first direction. The first annular light source 410 may be fixedly connected to the first connecting member 520, and when the first connecting member 520 slides along the first direction, the first annular light source 410 may be driven to move along the first direction. The first camera mechanism 420 may be fixedly connected to the second connection member 530 . When the second connection member 530 slides along the first direction, the first camera mechanism 420 may be driven to move along the first direction.

In addition, a limiting structure may be provided between the first guide rail 511 and the first connecting member 520, and between the first guide rail 511 and the second connecting member 530, so as to fix the first connecting member 520 or the second connecting member 530 after the first connecting member 520 or the second connecting member 530 moves to a preset position. For example, a plurality of latch holes 512 may be provided along the first direction on the first guide rail 511, and when the first connecting member 520 and the second connecting member 530 are respectively moved to a position, the first connecting member 520 may be fixed by a latch penetrating through the latch holes 512 of the first connecting member 520 and the first guide rail 511, and the second connecting member 530 may be fixed by a latch penetrating through the latch holes 512 of the second connecting member 530 and the first guide rail 511.

It is understandable that after the flipping mechanism flips the battery cell 200, the size of the battery cell 200 along the first direction is also different because the large surface or the wide and high surface of the battery cell 200 is facing the first annular light source 410. At this time, by moving the first annular light source 410 and the first camera mechanism 420, the distance between the first annular light source 410 and the battery cell 200 can be adjusted, and the distance between the first annular light source 410 and the first camera mechanism 420 can be adjusted, so that the image captured by the first camera mechanism 420 can clearly show the outline of the wire drawing. Alternatively, when battery cells 200 of different sizes are placed on the mounting table 100, the first annular light source 410 and the first camera mechanism 420 can also be driven to move along the first direction to accommodate the image capture of battery cells 200 of different sizes.

As mentioned above, the large surface of the battery cell 200 is provided with a hot melting point. In actual production, the large surface of the battery cell 200 is provided with multiple (for example, 3) hot melting points. When the battery cell 200 is placed on the mounting table 100, the length direction of the battery cell 200 can be consistent with the second direction, that is, the three hot melting points are arranged along the second direction. Based on this, the moving mechanism 500 can also include a third connecting member 540 and a second guide rail 321 provided on the connecting frame 320, and the second guide rail 321 extends along the second direction. The fixed frame 510 can be installed on the second guide rail 321 and can move relative to the second guide rail 321 along the second direction. Since the first connecting member 520 and the second connecting member 530 are both installed on the fixed frame 510, when the fixed frame 510 moves along the second direction, it can drive the first annular light source 410 and the first camera mechanism 420 to move synchronously along the second direction, so as to facilitate the first annular light source 410 and the first camera mechanism 420 to detect the wire drawing of different hot melting point parts of the large surface of the battery cell 200.

In addition, the moving mechanism 500 may further include driving devices for driving the first connecting member 520, the second connecting member 530 and the third connecting member 540 to move respectively. Each driving device may be, for example, a cylinder or a motor.

In some embodiments, in combination with FIG. 1 and FIG. 5 , the image acquisition component 400 may further include a second annular light source 430 and a second camera mechanism 440. The battery cell 200, the second annular light source 430, the second camera mechanism 440 and the battery cell 200 may be arranged in sequence along the second direction, that is, the second annular light source 430 and the second camera mechanism 440 may be used to photograph the width and height of the battery cell 200. Specifically, the second annular light source 430 may emit a second light to a surface of the battery cell 200 facing the second annular light source 430. After receiving the second light, the surface of the battery cell 200 reflects the second light, and the reflected second light is received by the second camera mechanism. In addition, the second camera mechanism may also capture an image of the surface of the battery cell 200 used to reflect the second light. It can be understood that when the battery cell 200 is placed on the loading platform 100, the first ring light source 410 and the first camera mechanism 420 cooperate to shoot the large surface of the battery cell 200, and the second ring light source 430 and the second camera mechanism 440 cooperate to shoot the wide and high surfaces of the battery cell 200. The first camera mechanism 420 and the second camera mechanism 440 can work synchronously, which can improve the detection efficiency.

Specifically, the middle of the second annular light source 430 has a second through hole 431, one end of the second through hole 431 is opened toward the second camera mechanism 440, and the other end is opened toward the part to be detected of the battery cell 200. When the second light emitted by the second annular light source 430 is reflected by the surface of the battery cell 200, the reflected second light can be received by the second camera mechanism 440 after passing through the second through hole 431. In this embodiment, by providing the second through hole 431, it is not only convenient for the reflected second light to pass through, but also the reflected second light can be emitted more concentratedly toward the second camera mechanism 440, so that the second camera mechanism 440 can receive more second light, thereby ensuring the clarity of the image when acquiring the image of the part to be detected of the battery cell 200.

In this embodiment, the design of the distance between the second annular light source 430 and the battery cell 200 and the distance between the second camera mechanism 440 and the second annular light source 430 can refer to the parameter design of the first annular light source 410 and the first camera mechanism 420, which will not be described here.

In addition, when the first camera mechanism 420 and the second camera mechanism 440 are used to simultaneously capture images of the battery cell 200, after completing the image capture of one large surface and one wide and high surface of the battery cell 200, the flip mechanism only needs to flip the battery cell 200 once, so that the other large surface of the battery cell 200 faces the first annular light source 410, and the other wide and high surface faces the second annular light source 430, and the image capture of the other large surface and the other wide and high surface can be completed. Therefore, by providing two sets of annular light sources and camera mechanisms, the detection efficiency can be further improved.

It should be noted that the first ring light source 410 and the second ring light source 430 in this embodiment can be an integrated circular ring structure as shown in Figures 3 and 5. In some other embodiments, the first ring light source 410 and the second ring light source 430 can also be an integrated square frame structure, or the first ring light source 410 and the second ring light source 430 can also be a split ring structure formed by a plurality of light sources surrounding a circle, which is not limited in this embodiment.

In some embodiments, referring to FIG6 , the battery cell detection device may further include a transmission mechanism 700, which is located on the side of the carrier 100 away from the image acquisition component 400. Specifically, the transmission mechanism 700 may include a transmission line 710, which extends along a third direction, which is perpendicular to the first direction and perpendicular to the second direction. The transmission line 710 is provided with a plurality of detection stations, which are arranged along the third direction, and each detection station can be used to set a carrier 100, that is, each detection station can be used to place a battery cell 200. The transmission line 710 can move along the third direction, thereby driving the carrier 100 to move along the third direction, and the relative position between the image acquisition component 400 and the transmission line 710 is fixed in the third direction. When the transmission line 710 transmits the battery cell 200, the plurality of battery cells 200 can pass through the image acquisition component 400 in sequence, and then the detection of the plurality of battery cells 200 is completed in sequence. In this embodiment, by providing the transmission mechanism 700 , it is possible to realize automatic detection of the battery cells 200 , thereby further improving the detection efficiency.

Further, referring to FIG. 7 and FIG. 8 , the conveying mechanism 700 may also be provided with a sorting station, and the battery cell detection device may also be provided with a sorting mechanism 600. Along the moving direction of the conveying line 700, the sorting station is located in front of the image acquisition component 400. Exemplarily, the sorting mechanism 600 may be provided on the side of the connecting frame 320 away from the second guide rail 321, that is, the sorting mechanism 600 and the second guide rail 321 are respectively provided on opposite sides of the connecting frame 320, so that when the battery cell 200 is imaged at the image acquisition component 400 and wire drawing is detected, it can be picked up by the sorting mechanism 600 and placed in the sorting station to facilitate the subsequent processing of the battery cell 200 with wire drawing.

Based on the same inventive concept, the embodiment of the present application may also provide a battery cell detection method, which is based on the battery cell detection device in the embodiment of the present application. The battery cell detection method in this embodiment may include the following steps:

Step S100: placing the battery cell 200 with the coating on the surface on the mounting table 100, and the top of the battery cell 200 is in contact with the cover plate;

Step S200: using the image acquisition component 400 to acquire an image of the surface of the battery cell 200;

Step S300: Processing the image captured by the image acquisition component 400 to detect whether the battery cell 200 has wire drawing through the image.

In the above step S300, when it is detected through the image that the battery cell 200 has wire drawing, the corresponding battery cell 200 reports NG, and the above step S300 may further include the following steps:

Step S301: Check whether the battery cell has a hole;

Step S302: When it is detected that the battery cell 200 has a hole, it is determined that there is a foreign object in the battery cell 200:

Step S303: Detect the source of the foreign matter and remove the foreign matter.

In the above step S403, the source of the foreign matter may be at least one of detached wire drawing, tab glue interlayer or dust.

In the above step S300 , when it is detected through the image that the battery cell 200 has no wire drawing, the cover plate is welded to the battery cell 200 .

It should be noted that in the above step S100, the film covering the surface of the battery cell 200 placed on the mounting table 100 is fixed to the plastic frame on the top cover of the battery cell 200, and the next production process is to weld the cover plate to the shell of the battery cell 200.

In addition, when a battery cell 200 with wire drawing is detected and reported as NG, the battery cell 200 with wire drawing can be picked out, and the surface of the picked out battery cell 200 can be re-wrapped with a film, so as to avoid wasting the battery cell 200.

When the battery cell detection device in this embodiment is provided with a flipping mechanism, and the image acquisition component 400 only includes the first annular light source 410 and the first camera mechanism 420, after the above battery cell detection method completes step S200 on one surface of the battery cell 200, the flipping mechanism can be used to flip the battery cell 200 so that the other surface of the battery cell 200 is facing the first annular light source 410, and step S200 is repeated. In this way, by flipping the battery cell 200 three times and repeating step S200 after each flipping of the battery cell 200, images of each surface of the battery cell 200 can be obtained. Then, each image is processed and it is determined whether the battery cell 200 has wire drawing.

When the battery cell detection device in this embodiment is provided with a flipping mechanism, and the image acquisition component 400 includes a first annular light source 410, a first camera mechanism 420, a second annular light source 430, and a second camera mechanism 440, when the battery cell 200 is detected, step S200 can be completed simultaneously on two surfaces of the battery cell 200. Then, the battery cell 200 is flipped by the flipping mechanism, and step S200 is repeated to complete image acquisition of the other two surfaces of the battery cell 200, and images of each surface of the battery cell 200 can be obtained. Then, each image is processed, and it is determined whether the battery cell 200 has wire drawing.

Since the large surface of the battery cell 200 has three hot melting points and the wide and high surface has one hot melting point, when photographing the large surface of the battery cell 200, the first annular light source 410 and the first camera mechanism 420 can be moved and the first camera mechanism can be made to shoot three times, thereby respectively collecting images of the three hot melting points of the large surface. The hot melting points on the wide and high surface only need to be photographed once.

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (10)

1. The battery cell detection device is characterized by comprising a carrying table and an image acquisition assembly, wherein the carrying table and the image acquisition assembly are arranged at intervals along a first direction;

The carrying table is used for placing a battery cell to be detected, and the part to be detected of the battery cell is arranged towards the image acquisition assembly;

The image acquisition assembly comprises a first annular light source and a first camera shooting mechanism, the first annular light source is positioned between the first camera shooting mechanism and the carrying platform, the battery cell, the first annular light source and the first camera shooting mechanism are sequentially arranged along the first direction;

The first annular light source is used for emitting first light rays to the surface of one side, facing the first annular light source, of the battery cell, the first camera mechanism is used for receiving the first light rays reflected by the battery cell, and shooting the battery cell to obtain an image of the surface, used for receiving the first light rays, of the battery cell;

The distance between the orthographic projection of the end, closest to the battery cell, of the first annular light source on a first plane and the orthographic projection of the part, to be detected, of the battery cell on the first plane is L, the shortest distance from the end, closest to the battery cell, of the first annular light source to the carrying table is H, H/L is less than or equal to tan30 degrees, and the first plane is a plane perpendicular to the first direction.

2. The cell inspection device according to claim 1, further comprising a turnover mechanism for turning over the cells placed on the stage so that the parts to be inspected, which are not inspected by the cells, are directed toward the first annular light source.

3. The cell detection device according to claim 1 or 2, wherein the image acquisition assembly further comprises a second annular light source and a second camera mechanism, the cells, the second annular light source and the second camera mechanism being arranged in sequence along a second direction, the second direction being perpendicular to the first direction;

The second annular light source is used for emitting second light rays to the surface of one side, facing the second annular light source, of the battery cell, the second camera shooting mechanism is used for receiving the second light rays reflected by the battery cell, and shooting the battery cell to obtain an image of the surface, used for receiving the second light rays, of the battery cell.

4. The cell detection device according to claim 3, wherein a first through hole is formed in the middle of the first annular light source, one end of the first through hole is opened towards the first image pickup mechanism, the other end of the first through hole is opened towards a part to be detected of the cell, and the first light reflected by the cell is received by the first image pickup mechanism after passing through the first through hole;

The middle part of the second annular light source is provided with a second through hole, one end opening of the second through hole faces the second camera mechanism, the other end opening of the second through hole faces the part to be detected of the battery cell, and the second light reflected by the battery cell passes through the second through hole and is received by the second camera mechanism.

5. The cell inspection device of claim 1, further comprising a movement mechanism for driving the first annular light source and the first camera mechanism, respectively, to move in the first direction.

6. The cell testing device of claim 5, wherein the movement mechanism comprises a first rail, a first connector, and a second connector;

The first guide rail extends along the first direction;

The first connecting piece can be slidably arranged on the first guide rail along the first direction relative to the first guide rail, and the first annular light source is fixed on the first connecting piece;

The second connecting piece can be installed on the first guide rail in a sliding mode along a second direction relative to the first guide rail, and the first camera shooting mechanism is fixed on the second connecting piece.

7. The device of claim 5, wherein the movement mechanism is further configured to drive the first annular light source and the first camera mechanism to move in a second direction, the second direction being perpendicular to the first direction.

8. The cell testing device of claim 7, wherein the movement mechanism comprises a second rail and a third connector;

the second guide rail extends along the second direction;

the third connecting piece can be installed on the second guide rail in a sliding mode along the second direction relative to the second guide rail, and the first annular light source and the first camera shooting mechanism are connected to the third connecting piece.

9. The cell detection device of claim 1, further comprising a transfer mechanism located on a side of the mounting table facing away from the image acquisition assembly;

The conveying mechanism extends along a third direction, the conveying mechanism is used for placing a plurality of carrying tables, the carrying tables are arranged along the third direction, and the third direction is perpendicular to the first direction;

The conveying mechanism can move along the third direction so as to drive each carrying platform to move along the third direction.

10. The device of claim 1, wherein a spacing between the first annular light source and the first camera mechanism is 200 ± 20mm.