Image information acquisition structure and battery inspection equipment

Abstract

The invention relates to the technical field of battery detection, in particular to an image information acquisition structure and battery inspection equipment, the structure comprises at least two inspection stations and an image acquisition assembly; the multiple inspection stations are arranged side by side, and the power battery modules are conveyed in the arrangement direction of the multiple inspection stations. The image acquisition assembly comprises side surface acquisition structures and end surface acquisition structures, the starting sides and the ending sides of the plurality of inspection stations are respectively provided with the side surface acquisition structures which are used for acquiring side surface image information of the power battery module, and the two ends of each inspection station are respectively provided with the end surface acquisition structures which are used for acquiring side surface image information of the power battery module; and the end face image information of the power battery module is acquired. According to the technical scheme, through cooperation of the inspection station and the image collection assembly, image collection of all faces of the power battery module can be automatically completed, image collection is comprehensive, efficiency is higher, and the battery inspection process can be controlled within 25 seconds.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection, and particularly to an image information acquisition structure and a battery inspection device. Background Art

[0002] The power battery module has a certain size and weight, and in terms of its appearance, it includes multiple appearance surfaces. When performing appearance detection, it is necessary to inspect each surface.

[0003] Currently, the appearance inspection of power battery modules is still mainly manual, which not only has high costs but also a relatively large working intensity. In addition, the multiple surfaces of the power battery module are made of different materials and have different surface treatment structures, including many fine structures. During the inspection process, multiple defect items need to be quickly inspected on each surface and in the fine structures, which requires high requirements for the inspectors and is very likely to result in missed inspections. Summary of the Invention

[0004] To solve at least the above technical problems existing in the prior art, the present invention provides an image information acquisition structure and a battery inspection device.

[0005] On the one hand, the present invention provides an image information acquisition structure, including at least two inspection stations and an image acquisition component; a plurality of the inspection stations are arranged side by side, and the power battery module is conveyed along the arrangement direction of the plurality of inspection stations; the image acquisition component includes a side acquisition structure and an end face acquisition structure, the side acquisition structures are respectively arranged at the starting side and the ending side of the plurality of inspection stations and are used for acquiring the side image information of the power battery module, and the end face acquisition structures are respectively arranged at both ends of each inspection station and are used for acquiring the end face image information of the power battery module.

[0006] In some embodiments, it includes a first inspection station and a second inspection station, and the power battery module is conveyed along the direction from the first inspection station to the second inspection station; the end face acquisition structure includes a first large field of view acquisition structure, a second large field of view acquisition structure, a first small field of view acquisition structure, and a second small field of view acquisition structure; the first large field of view acquisition structure is arranged at the first end of the first inspection station, the first small field of view acquisition structure is arranged at the second end of the first inspection station, the second small field of view acquisition structure is arranged at the first end of the second inspection station, and the second large field of view acquisition structure is arranged at the second end of the second inspection station.

[0007] In some embodiments, a pallet assembly and a transfer assembly are further included. The pallet assemblies are respectively arranged at the first inspection station and the second inspection station. The pallet assembly includes a pallet and a first lifting structure. The transfer assembly includes a slide rail, a slider and a lifting structure. The slide rails arranged along the conveying direction are respectively arranged at two ends of the first inspection station and the second inspection station. The slider is slidably connected with the slide rail, and the lifting structure is arranged on the slider. When the power battery module at the first inspection station moves to the second inspection station, the first lifting structure at the first inspection station lifts the pallet to a height higher than the lifting structure. The lifting structure slides to below the power battery module, and the first lifting structure descends, so that the edge of the power battery module is clamped with the lifting structure. The lifting structure moves to above the pallet at the second inspection station along with the slider, and the first lifting structure ascends, so that the power battery module is placed on the pallet.

[0008] In some embodiments, a clamping assembly is further included. The clamping assembly includes a first clamping jaw and a first moving module. The first clamping jaw is connected with the first moving module, and the first clamping jaw is used for clamping the power battery module. The image acquisition assembly further includes a bottom surface acquisition structure. The first moving module drives the power battery module to move above the bottom surface acquisition structure, and the bottom surface image information of the power battery module is acquired through the bottom surface acquisition structure. And the first moving module is used for placing the power battery module on the pallet at the first inspection station.

[0009] In some embodiments, a blanking assembly is further included. The blanking assembly includes a second clamping jaw and a second moving module. The second clamping jaw is connected with the second moving module, and the second clamping jaw is used for clamping the power battery module at the second inspection station and moving it. The image acquisition assembly further includes a top surface acquisition structure. The second moving module drives the power battery module to move below the top surface acquisition structure, and the top surface image information of the power battery module is acquired through the top surface acquisition structure.

[0010] In some embodiments, the top surface acquisition structure, the bottom surface acquisition structure, the side surface acquisition structure and the end surface acquisition structure include area array cameras, line scan cameras and / or 3D cameras.

[0011] On the other hand, the present invention further provides a battery inspection device, including the above image information acquisition structure.

[0012] In some embodiments, it further includes a conveying assembly, and the conveying assembly includes a bracket and a circulating conveying mechanism arranged in a ring on the bracket; the circulating conveying mechanism includes a plurality of workstations for moving the power battery module, and the workstations include a loading workstation, an unloading workstation, and a buffer workstation.

[0013] In some embodiments, the circulating conveying mechanism further includes an intermediate unloading structure; the intermediate unloading structure is located in the middle of the circulating conveying mechanism, and the intermediate unloading structure and the circulating conveying mechanism on one side of it form a good product conveying structure, and the intermediate unloading structure and the circulating conveying mechanism on the other side of it form a defective product conveying structure.

[0014] In some embodiments, it further includes a loading assembly, and the loading assembly includes a loading carrier and a conveying structure; the surface of the loading carrier is provided with the power battery module, and the conveying structure is used to drive the loading carrier to move along a set path.

[0015] An image information acquisition structure and a battery inspection device provided by the present invention. When acquiring image information, the power battery module is sequentially conveyed through a plurality of inspection workstations. Among them, during the conveying process, the corresponding image acquisition operations can be completed through the side acquisition structure and the end face acquisition structure on the periphery of the inspection workstation in sequence. The technical solution of the present invention, through the cooperation of the inspection workstation and the image acquisition component, can automatically complete the image acquisition of each surface of the power battery module, and the image acquisition is comprehensive and more efficient. Among them, the battery inspection process can be controlled within 25 seconds. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present invention will become readily understood. In the drawings, several embodiments of the present invention are shown in an exemplary rather than restrictive manner, wherein:

[0017] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0018] Figure 1 It is a schematic diagram of the battery inspection device provided by an embodiment of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure at the loading assembly of the battery inspection device provided by an embodiment of the present invention;

[0020] Figure 3 It is a side view of the loading assembly of the battery inspection device provided by an embodiment of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the clamping assembly of the battery inspection device provided by an embodiment of the present invention;

[0022] Figure 5 Top view of the image information acquisition structure in the battery inspection equipment provided by the embodiment of the present invention;

[0023] Figure 6 Schematic structural diagram of the bottom surface acquisition structure in the battery inspection equipment provided by the embodiment of the present invention;

[0024] Figure 7 Schematic structural diagram of the side surface acquisition structure in the battery inspection equipment provided by the embodiment of the present invention;

[0025] Figure 8 Schematic structural diagram of the large field of view acquisition structure in the battery inspection equipment provided by the embodiment of the present invention;

[0026] Figure 9 Schematic structural diagram of the small field of view acquisition structure in the battery inspection equipment provided by the embodiment of the present invention;

[0027] Figure 10 Schematic structural diagram of the top surface acquisition structure in the battery inspection equipment provided by the embodiment of the present invention;

[0028] Figure 11 Schematic structural diagram of the line scan camera assembly on the top surface of the battery inspection equipment provided by the embodiment of the present invention;

[0029] Figure 12 Schematic structural diagram of the pallet assembly and the transfer assembly in the battery inspection equipment provided by the embodiment of the present invention;

[0030] Figure 13 Schematic structural diagram of the bracket of the conveying assembly in the battery inspection equipment provided by the embodiment of the present invention;

[0031] Figure 14 Schematic structural diagram of the circulating conveying mechanism of the conveying assembly in the battery inspection equipment provided by the embodiment of the present invention;

[0032] Figure 15 Schematic diagram of the good product discharging in the battery inspection equipment provided by the embodiment of the present invention;

[0033] Figure 16 Schematic diagram of the defective product discharging in the battery inspection equipment provided by the embodiment of the present invention.

[0034] In the figure:

[0035] 11: Loading carrier; 12: Conveying structure; 13: Blocking cylinder; 14: Positioning opposed sensor; 15: Lifting device; 151: Lifting plate; 152: Plug pin;

[0036] 21: First clamping jaw; 211: Fixed clamping jaw; 212: Movable clamping jaw; 213: Plate structure; 214: Distance measuring sensor; 22: Bottom surface acquisition structure; 23: Inspection station; 24: Side surface acquisition structure; 25: End surface acquisition structure; 251: First large field of view acquisition structure; 252: Second large field of view acquisition structure; 253: First small field of view acquisition structure; 254: Second small field of view acquisition structure; 26: Pallet assembly; 261: Pallet; 262: First lifting structure; 27: Transfer assembly; 271: Slide rail; 272: Slide block; 273: Lifting structure;

[0037] 31: Second clamping jaw; 32: Second moving module; 33: Top surface acquisition structure; 34: Top surface line scan camera assembly; 35: Circulating conveying mechanism; 351: Intermediate blanking structure. Detailed implementation manners

[0038] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] An embodiment of the present invention provides a battery inspection device. The battery inspection device mainly includes three steps to complete automatic inspection operations, namely, a loading step, an inspection step, and an unloading step. Among them, in the loading step, automatic loading operation of the power battery module is completed; in the inspection step, image information of each surface of the power battery module is collected; and in the unloading step, the operation of distinguishing and unloading qualified and unqualified products is completed.

[0040] As Figure 1 shown, the battery inspection device includes operation stations corresponding to the loading step, the inspection step, and the unloading step, that is, a loading station, an inspection station, and an unloading station. The battery sequentially completes corresponding inspection steps at the above three stations.

[0041] Hereinafter, with reference to the accompanying drawings, each component of the battery inspection device provided in the embodiments of the present invention, as well as the positional relationship and connection relationship between each component, will be described in detail.

[0042] As Figures 2 to 16 shown, the battery inspection device includes a loading component. The loading component is located at the loading station. On one side of the loading station is an existing production line structure. That is, after the power battery module completes corresponding operations via the existing production line structure, it is conveyed to one side of the loading station. For example, an electric control cabinet for controlling the overall battery inspection device may also be provided on one side of the loading station.

[0043] The loading component includes a loading gantry gripper (not shown in the figure), a loading carrier 11, and a conveying structure 12. The loading gantry gripper is located above the loading component and the conveying structure 12. The loading gantry gripper is used to grasp the power battery module conveyed by the production line structure and place the power battery module on the loading carrier 11. The loading gantry gripper includes a claw-shaped structure for clamping and a driving structure for driving the claw-shaped structure to move in three-dimensional or multi-dimensional directions. In the embodiments of the present invention, the form of the driving structure is not limited.

[0044] The loading carrier 11 is used to receive the power battery module grasped by the loading gantry gripper. The conveying structure 12 includes structures such as a conveying chain or a conveyor belt. The loading carrier 11 moves on the conveying structure 12. After reaching the set position, the movement of the loading carrier 11 is blocked by a blocking cylinder 13. And at least two groups of positioning through-beam sensors 14 are arranged on both sides of the carrier to determine whether the position of the power battery module on the carrier is correct by using the positioning through-beam sensors 14. For example, if the signal of the positioning through-beam sensor 14 is cut off by the power battery module, it means that there is a power battery module, otherwise there is no power battery module, and an alarm prompt can be given.

[0045] Wherein, at the position of the blocking cylinder 13, structures such as a proximity switch or a diffuse reflection photoelectric switch are also arranged to further assist in judging the position of the loading carrier 11 to achieve a more accurate blocking operation. For example, at the end of the loading carrier 11, that is, the end far from the blocking cylinder 13, a stop buckle can also be arranged to prevent the loading carrier 11 from moving in the reverse direction.

[0046] The loading component further includes a lifting device 15, which is arranged below the loading carrier 11. When it is determined that the loading carrier 11 reaches the loading position, the lifting device 15 rises to lift the loading carrier 11 by a certain height, such as 10 millimeters. The loading carrier 11 is separated from the conveying structure 12, and the structure at the downstream position of the loading component can perform the material taking operation. The specific material taking method is referred to the description later. For example, the top of the lifting device 15 includes a lifting plate 151, and protruding pins 152 are arranged on the surface of the lifting plate 151. A groove is arranged on the back side of the loading carrier 11. During the lifting operation, the pins 152 are inserted into the groove to avoid dislocation. After the material taking is completed, the lifting device 15 descends to lower the empty loading carrier 11 onto the conveying structure 12, and the conveying structure 12 reversely sends the loading carrier 11 back to the starting position. Then, the loading operation can be repeated. In the embodiments of the present invention, the lifting device 15 can be a cylinder or other precisely telescopic structures.

[0047] In an embodiment of the present invention, the battery inspection device includes an image information acquisition structure, which includes a clamping component, a bottom surface acquisition structure 22, a side and end surface acquisition structure 25, and a top surface acquisition structure 33. The clamping component is used to clamp the power battery module on the loading carrier 11 in the loading component and drive the power battery module to move along a specified path. The power battery module sequentially passes through the bottom surface acquisition structure 22, the side and end surface acquisition structure 25, and the top surface acquisition structure 33 to complete the image information acquisition of the bottom surface, side surface, end surface, and top surface. Among them, the image acquisition of the power battery module is completed automatically.

[0048] In an embodiment of the present invention, the clamping component includes a first clamping jaw 21 and a first moving module. The first clamping jaw 21 is connected to the first moving module. The first clamping jaw 21 is used to clamp the power battery module on the loading carrier 11 in the loading component. The first moving module drives the first clamping jaw 21 to move above the loading carrier 11. Then, the first moving module drives the first clamping jaw 21 to descend, and the first clamping jaw 21 completes the clamping of the power battery module. Then, the first moving module drives it to rise and reset, and then moves to the next station through the first moving module.

[0049] The first clamping jaw 21 includes a fixed clamping jaw 211 and a moving clamping jaw 212. The moving clamping jaw 212 is driven by a telescopic structure, such as a telescopic cylinder or a lead screw assembly. The moving clamping jaw 212 moves towards the fixed clamping jaw 211 to complete the clamping action, and the moving clamping jaw 212 moves away from the fixed clamping jaw 211 to complete the releasing action. Among them, a soft rubber material is provided on the fixed clamping jaw 211 and the moving clamping jaw 212. During the clamping process, it can avoid scratching the product, or air grooves are added to increase the clamping friction and prevent vacuum adhesion to the product.

[0050] The first clamping jaw 21 includes a plate body structure 213. The fixed clamping jaw 211 is arranged below the plate body structure 213. A strip-shaped hole is provided on the plate body structure 213. The moving clamping jaw 212 passes through the strip-shaped hole and is partially located below the plate body structure 213. The telescopic structure is located above the plate body structure 213. Among them, a bellows can be provided on the strip-shaped hole, and the bellows can block the strip-shaped hole to prevent objects such as top screws from falling.

[0051] For example, a distance measuring sensor 214 is provided between the fixed clamping jaw 211 and the moving clamping jaw 212. Before the first clamping jaw 21 operates, the distance measuring sensor 214 is used to detect whether there is a product on the loading carrier 11 and whether the product is too high, and further judge whether the clamping condition is met.

[0052] The first moving module is connected to the plate body structure 213. For example, the first moving module includes three linear lead screw assemblies, and the plate body structure 213 is driven to move in three-dimensional directions through the three linear lead screw assemblies. Or, the first moving module can also be other driving forms, such as using a multi-axis robotic arm, etc.

[0053] On the moving path of the clamping assembly, there is a bottom surface acquisition structure 22. The clamping assembly moves the power battery module above the bottom surface acquisition structure 22. At this position, the bottom surface of the power battery module is imaged by the bottom surface acquisition structure 22.

[0054] For example, the bottom surface acquisition structure 22 includes a line scan camera assembly and a branch line moving module. The line scan camera assembly is arranged on the slider 272 of the linear moving module through a bracket. The linear moving module is arranged along the length direction of the power battery module. For example, the linear moving module is a lead screw module. The line scan camera, under the movement of the linear moving module, completes the image acquisition of the bottom surface of the power battery module. An adjustable structure is arranged on the bracket for adjusting the lens and / or light source, etc. After the bottom surface image acquisition is completed, the first moving module of the clamping assembly places the power battery module on the inspection station 23.

[0055] The battery inspection equipment includes at least two inspection stations 23. The multiple inspection stations 23 are arranged side by side, and the power battery module is conveyed along the arrangement direction of the multiple inspection stations 23. Side surface acquisition structures 24 are respectively arranged on the starting side and the ending side of the multiple inspection stations 23 and are used for acquiring the side surface image information of the power battery module. End surface acquisition structures 25 are respectively arranged at both ends of each inspection station 23 and are used for acquiring the end surface image information of the power battery module.

[0056] After the first moving module places the power battery module on the first inspection station 23, the side away from the adjacent inspection station 23 of this inspection station 23 is the starting side, and the side surface acquisition structure 24 at this position is used to obtain the side surface image information of the power battery module on the same side. For example, the side surface acquisition structure 24 includes a line scan camera assembly, a 3D camera assembly, a area array camera assembly and a three-dimensional moving module. For example, the three-dimensional moving module is a linear lead screw module or a multi-axis robotic arm and other structures. The three-dimensional moving module drives the line scan camera assembly, the 3D camera assembly and the area array camera assembly to move and complete the side surface image acquisition.

[0057] At the same time, end surface acquisition structures 25 are respectively arranged at both ends of the inspection station 23, and the end surface image information of the power battery module is synchronously acquired by using the end surface acquisition structures 25. The number of inspection stations 23 can be set according to the detection requirements of the end surface. For example, when acquiring the end surface image information, it is necessary to obtain the entire surface image information of the end surface and the image information of the detailed part. At the end surface of the same inspection station 23, multiple camera assemblies cannot be set. Therefore, two inspection stations 23 can be set.

[0058] For example, the inspection station 23 includes a first inspection station and a second inspection station, and the power battery module is conveyed in the direction from the first inspection station to the second inspection station; the end face acquisition structure 25 includes a first large field of view acquisition structure 251, a second large field of view acquisition structure 252, a first small field of view acquisition structure 253, and a second small field of view acquisition structure 254; for the same end face, the end face image information of the entire surface and the end face image information of local details are obtained through the large field of view acquisition structure and the small field of view acquisition structure respectively. For example, the first large field of view acquisition structure 251 is arranged at the first end of the first inspection station, the first small field of view acquisition structure 253 is arranged at the second end of the first inspection station, the second small field of view acquisition structure 254 is arranged at the first end of the second inspection station, and the second large field of view acquisition structure 252 is arranged at the second end of the second inspection station. On the same inspection station 23, the end face image information of the entire surface and the end face image information of local details are arranged staggeredly.

[0059] For example, the first large field of view acquisition structure 251, the second large field of view acquisition structure 252, the first small field of view acquisition structure 253, and the second small field of view acquisition structure 254 are all area array camera assemblies, and each area array camera assembly is respectively connected to an independent three-dimensional movement module. For example, the three-dimensional movement module is a linear lead screw module. The area array camera assembly is driven by the three-dimensional movement module to move to a set position, and then the end face image acquisition operation is completed.

[0060] After the power battery module moves to the inspection station 23 at the end, a side acquisition structure 24 for detecting the other side of the power battery module is arranged on one side of the inspection station 23. The side acquisition structure 24 is the same as the side acquisition structure 24 at the starting position, and the acquisition method is the same.

[0061] Among them, when the power battery module needs to be moved between the inspection stations 23 through a moving structure. In the embodiment of the present invention, the battery inspection device further includes a pallet 261 assembly 26 and a transfer assembly 27. The pallet 261 assemblies 26 are respectively arranged on the first inspection station and the second inspection station; the pallet 261 assembly 26 includes a pallet 261 and a first lifting structure 262, and the transfer assembly 27 includes a slide rail 271, a slider 272 and a lifting structure 273. The slide rails 271 arranged along the conveying direction are respectively arranged at both ends of the first inspection station and the second inspection station. The slider 272 is slidably connected to the slide rail 271, and the lifting structure 273 is arranged on the slider 272; when the power battery module on the first inspection station is moved to the second inspection station, the first lifting structure 262 on the first inspection station lifts the pallet 261 to a height higher than the lifting structure 273, and the lifting structure 273 slides to the lower part of the power battery module. The first lifting structure 262 descends to make the edge of the power battery module be clamped with the lifting structure 273. The lifting structure 273 moves to the upper part of the pallet 261 of the second inspection station along with the slider 272, and the first lifting structure 262 on the second inspection station ascends to place the power battery module on the pallet 261. Thus, the moving operation of the power battery module between the inspection stations 23 is completed. For example, the first lifting structure 262 is a lifting cylinder.

[0062] In the embodiment of the present invention, the battery inspection device further includes a blanking assembly; the blanking assembly includes a second gripper 31 and a second moving module 32. The second gripper 31 is connected to the second moving module 32, and the second gripper 31 is used to grip and move the power battery module on the second inspection station; the image acquisition assembly further includes a top surface acquisition structure 33. The second moving module 32 drives the power battery module to move to the lower part of the top surface acquisition structure 33, and the top surface image information of the power battery module is acquired through the top surface acquisition structure 33.

[0063] The top surface acquisition structure 33 is a part of the blanking assembly, that is, when the blanking operation is completed, through the second gripper 31 and the second moving module 32, the power battery module that has completed the acquisition of the side image information and the end face image information on the inspection station 23 is gripped to the lower part of the top surface acquisition structure 33, and then the acquisition of the top surface image information is completed. For example, the top surface acquisition structure 33 includes a area array camera assembly and a three-dimensional moving module, and the area array camera assembly is moved through the three-dimensional moving module to complete the acquisition of the image information of the top surface of the power battery module (such as local image information). For example, the three-dimensional moving module is a lead screw linear module.

[0064] In the embodiment of the present invention, the top surface acquisition structure 33 is not limited to this. For example, a top surface line scan camera assembly 34 is further arranged above the terminal inspection station 23. When the power battery module is located at the terminal inspection station 23, synchronously, the whole surface image information of the top surface of the power battery module is acquired through the top surface line scan camera assembly 34.

[0065] After the image information of the top surface of the power battery module is collected, the image information of each surface of the power battery is collected. The obtained image information is sent to the image analysis system, and the image analysis system analyzes the collected image information. For example, methods such as edge detection, region growing method, and comparative analysis method are used. In the embodiments of the present invention, the analysis method is not limited.

[0066] In the embodiments of the present invention, the battery inspection device further includes a conveying component. The conveying component includes a bracket and a circulating conveying mechanism 35 arranged in a ring on the bracket; the second jaw 31 and the second moving module 32 of the blanking component place the power battery module on a station of the quantity component, and the top surface acquisition structure 33 is erected above the station, and the top surface image information is collected at this station.

[0067] For example, the circulating conveying mechanism 35 includes a plurality of stations for moving the power battery module. The stations include a loading station, a blanking station, and a buffer station. For example, the top surface acquisition structure 33 is erected on the loading station. After the power battery module stays at the loading station for a set time, the top surface image is collected, and then it is conveyed to the buffer station.

[0068] In the embodiments of the present invention, the circulating conveying mechanism 35 further includes an intermediate blanking structure 351; the intermediate blanking structure 351 is located in the middle of the circulating conveying mechanism 35, and the intermediate blanking structure 351 and the circulating conveying mechanism 35 on one side of it form a good product conveying structure 12, and the intermediate blanking structure 351 and the circulating conveying mechanism 35 on the other side of it form a defective product conveying structure 12.

[0069] After the loading station receives the power battery module, after the top surface image information is collected, the inspection result of the current power battery module can be obtained, that is, the current power battery module is a good product or a defective product. The power battery module is conveyed from the loading station to the intermediate blanking structure 351, and then the power battery module is conveyed to the buffer station on the opposite side of the loading station. At this buffer station, the good products and defective products are conveyed in two directions.

[0070] For example, both the circulating conveying mechanism 35 and the intermediate blanking structure 351 include electric rollers, and the rotation of the electric rollers completes the conveying of the power battery module. Among them, an adjustable-angle conveying structure 12 can be set at the transfer position to complete the steering conveying of the power battery module. For example, the conveying rollers and wheels in the first direction and the second direction of the adjustable-angle conveying structure 12, and a lifting structure, such as a cylinder, are configured. The height of the conveying rollers in the first direction can be higher or lower than the conveying rollers / wheels in the second direction under the action of the lifting structure, so as to meet the transfer conveying requirements.

[0071] The power battery module moves on the circulating conveying mechanism 35 and the intermediate blanking structure 351 through a carrier plate. For example, the circulating conveying mechanism 35 on one side of the intermediate blanking structure 351 is a good product conveying station, and the circulating conveying mechanism 35 on the other side is a defective product conveying station.

[0072] As Figure 15 shown, during the good product blanking operation, the No. 1 station is the receiving station, the No. 2 station is the intermediate blanking structure 351, the conveying direction of good products and defective products is switched at the position of the No. 3 station, the No. 4 station is the good product blanking station. After the good product blanking operation is completed, the perforated carrier plate circulates to the No. 1 station to complete continuous good product blanking operations. Among them, two buffer stations for buffering are included between the No. 1 station and the No. 4 station.

[0073] As Figure 16 shown, during the defective product blanking operation, the No. 1 station is the receiving station, the No. 2 station is the intermediate blanking structure 351, the conveying direction of good products and defective products is switched at the position of the No. 3 station, the No. 5 station is the defective product blanking station, and the No. 6 to No. 9 stations are buffer stations. When the defective products cannot be blanked in time, the power battery module will continue to be conveyed to the No. 6 to No. 9 stations. When the blanking operation is performed again, the rotating rollers of the No. 6 to No. 9 stations can be rotated in the reverse direction to convey the power battery module to the No. 5 station for blanking operation.

[0074] An image information acquisition structure and a battery inspection device provided by the present invention. When image information is acquired, the power battery module is sequentially conveyed at a plurality of inspection stations 23. Among them, during the conveying process, the corresponding image acquisition operations can be completed through the side acquisition structure 24 and the end face acquisition structure 25 on the periphery of the inspection station 23 in sequence. According to the technical solution of the present invention, through the cooperation of the inspection station 23 and the image acquisition component, the image acquisition of each surface of the power battery module can be automatically completed, the image acquisition is comprehensive and the efficiency is higher. Among them, the battery inspection process can be controlled within 25 seconds.

[0075] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without conflict, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0077] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily conceive of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An image information acquisition structure, characterized in that, Comprising at least two inspection stations (23) and an image acquisition assembly; A plurality of the inspection stations (23) are arranged side by side, and the power battery module is conveyed along the arrangement direction of the plurality of inspection stations (23); The image acquisition assembly includes a side acquisition structure (24) and an end face acquisition structure (25). The side acquisition structure (24) is respectively arranged at the starting side and the ending side of the plurality of inspection stations (23) and is used for acquiring the side image information of the power battery module. The end face acquisition structure (25) is respectively arranged at both ends of each inspection station (23) and is used for acquiring the end face image information of the power battery module.

2. The image information acquisition structure according to claim 1, wherein Comprising a first inspection station and a second inspection station, and the power battery module is conveyed along the direction from the first inspection station to the second inspection station; The end face acquisition structure (25) includes a first large field of view acquisition structure (251), a second large field of view acquisition structure (252), a first small field of view acquisition structure (253) and a second small field of view acquisition structure (254); The first large field of view acquisition structure (251) is arranged at the first end of the first inspection station, and the first small field of view acquisition structure (253) is arranged at the second end of the first inspection station. The second small field of view acquisition structure (254) is arranged at the first end of the second inspection station, and the second large field of view acquisition structure (252) is arranged at the second end of the second inspection station.

3. The image information acquisition structure according to claim 2, wherein Further comprising a pallet assembly (26) and a transfer assembly (27), and the pallet assembly (26) is respectively arranged on the first inspection station and the second inspection station; The pallet assembly (26) includes a pallet (261) and a first lifting structure (262). The transfer assembly (27) includes a slide rail (271), a slider (272) and a lifting structure (273). The slide rail (271) arranged along the conveying direction is respectively arranged at both ends of the first inspection station and the second inspection station. The slider (272) is slidably connected with the slide rail (271), and the lifting structure (273) is arranged on the slider (272); When the power battery module on the first inspection station moves to the second inspection station, the first lifting structure (262) on the first inspection station lifts the pallet (261) to a height higher than the lifting structure (273). The lifting structure (273) slides to the lower side of the power battery module, and the first lifting structure (262) descends to make the edge of the power battery module be clamped with the lifting structure (273). The lifting structure (273) moves to the upper side of the pallet (261) on the second inspection station along with the slider (272), and the first lifting structure (262) ascends to place the power battery module on the pallet (261).

4. The image information acquisition structure according to claim 3, characterized in that Further comprising a clamping assembly; The clamping assembly includes a first clamping jaw (21) and a first moving module. The first clamping jaw (21) is connected with the first moving module, and the first clamping jaw (21) is used for clamping the power battery module; The image acquisition component further includes a bottom surface acquisition structure (22). The first moving module drives the power battery module to move above the bottom surface acquisition structure (22), and the bottom surface image information of the power battery module is acquired through the bottom surface acquisition structure (22). Moreover, the first moving module is used to place the power battery module on the pallet (261) at the first inspection station.

5. The image information acquisition structure according to claim 4, characterized in that It further includes a blanking component; The blanking component includes a second gripper (31) and a second moving module (32). The second gripper (31) is connected to the second moving module (32), and the second gripper (31) is used to grip and move the power battery module at the second inspection station; The image acquisition component further includes a top surface acquisition structure (33). The second moving module (32) drives the power battery module to move below the top surface acquisition structure (33), and the top surface image information of the power battery module is acquired through the top surface acquisition structure (33).

6. The image information acquisition structure according to claim 5, characterized in that The top surface acquisition structure (33), the bottom surface acquisition structure (22), the side surface acquisition structure (24), and the end surface acquisition structure (25) include area array cameras, line scan cameras, and / or 3D cameras.

7. A battery inspection device, characterized in that, It includes the image information acquisition structure according to any one of claims 1 to 6.

8. The battery inspection device according to claim 7, characterized in that, It further includes a conveying component. The conveying component includes a bracket and a circulating conveying mechanism (35) arranged in a ring on the bracket; The circulating conveying mechanism (35) includes a plurality of stations for moving the power battery module. The stations include a loading station, a blanking station, and a buffer station.

9. The battery inspection device according to claim 8, characterized in that, The circulating conveying mechanism (35) further includes an intermediate blanking structure (351); The intermediate blanking structure (351) is located in the middle of the circulating conveying mechanism (35). The intermediate blanking structure (351) and the circulating conveying mechanism (35) on one side of it form a good product conveying structure (12), and the intermediate blanking structure (351) and the circulating conveying mechanism (35) on the other side of it form a defective product conveying structure (12).

10. The battery inspection device according to claim 7, characterized in that, It further includes a loading component. The loading component includes a loading carrier (11) and a conveying structure (12); The surface of the loading carrier (11) is provided with the power battery module, and the conveying structure (12) is used to drive the loading carrier (11) to move along a set path.

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