Detection device and detection method

Abstract

The invention relates to the technical field of battery detection, in particular to a detection device and a detection method. The detection device provided by the invention comprises an image acquisition device, wherein the image acquisition device comprises a first image acquisition unit, a second image acquisition unit, a third image acquisition unit, a fourth image acquisition unit and a fifth image acquisition unit; the detection of five surfaces and details of the end plate of the battery module can be completed at one detection station, a plurality of defect items can be quickly detected in each surface and a fine structure, the condition of missing detection is avoided, the labor cost is saved, and the detection efficiency can be effectively improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery detection, and in particular to a detection device and a detection method. Background Art

[0002] The power battery module has a certain size and weight, and in terms of appearance, it includes multiple appearance surfaces. When conducting appearance inspection, each surface needs to be inspected.

[0003] At present, the appearance inspection of power battery modules is still mainly done manually. The battery module includes an end plate, and the end plate includes an end plate top surface, an end plate bottom surface, a first end plate side surface, a second end plate side surface and an end plate end surface. Manual inspection of the appearance of each end plate surface is labor-intensive. In addition, multiple surfaces of the power battery module are made of different materials and have different surface treatment structures, which include many fine structures. During the inspection process, multiple defects need to be quickly inspected in each surface and fine structure, which places high demands on the inspectors and is prone to missed inspections. Summary of the invention

[0004] The present disclosure provides a detection device and a detection method to at least solve the above technical problems existing in the prior art.

[0005] A first aspect of the present disclosure provides a detection device, comprising: an image acquisition device, the image acquisition device comprising a first image acquisition unit, a second image acquisition unit, a third image acquisition unit, a fourth image acquisition unit, and a fifth image acquisition unit;

[0006] The first image acquisition unit and the second image acquisition unit are respectively located on both sides of the first inspection station, the first image acquisition unit is used to obtain first image information of the side surface of the first end plate of the battery module, and transmit the first image information to the MES system, and the second image acquisition unit is used to obtain first image information of the side surface of the second end plate of the battery module, and transmit the first image information to the MES system;

[0007] The third image acquisition unit and the fourth image acquisition unit are arranged up and down and are respectively located at the top and bottom of the first inspection station, the third image acquisition unit is used to obtain the second image information of the top surface of the end plate of the battery module, and transmit the second image information to the MES system, and the fourth image acquisition unit is used to obtain the second image information of the bottom surface of the end plate of the battery module, and transmit the second image information to the MES system;

[0008] The fifth image acquisition unit is disposed at one end of the first inspection station, and is used to obtain third image information of the end plate end face of the battery module, and transmit the third image information to the MES system.

[0009] Further, at least one of the first image acquisition unit, the second image acquisition unit, the third image acquisition unit, the fourth image acquisition unit and the fifth image acquisition unit includes a first moving unit, a second moving unit, a third moving unit and a camera assembly;

[0010] The first movable unit extends along a first direction, and the second movable unit is movably disposed on the first movable unit so that the second movable unit moves along the first direction;

[0011] The second movable unit extends along a second direction, and the third movable unit is movably disposed on the second movable unit so that the third movable unit moves along the second direction;

[0012] The third moving unit extends along a third direction, and the camera assembly is movably disposed on the third moving unit so that the camera assembly moves along the third direction;

[0013] The first direction, the second direction and the third direction are perpendicular to each other.

[0014] Furthermore, it also includes a rotating mechanism, which is used to drive the battery module to rotate within the plane where the bottom surface of the end plate is located.

[0015] Furthermore, it also includes a fourth image acquisition unit, which is arranged on one side of the second inspection station and is used to obtain fourth image information of the battery side, battery top or battery bottom of the battery module, and transmit the fourth image information to the MES system.

[0016] Furthermore, it also includes a manipulator, which is used to clamp the battery module to the first inspection station or the second inspection station;

[0017] Wherein, the manipulator comprises a rotating jaw, and the rotating jaw is used to drive the battery module to rotate within the plane where the end surface of the end plate is located.

[0018] Furthermore, it also includes a conveying mechanism, which is arranged beside the image acquisition device and is used to drive the battery module to pass through the image acquisition device.

[0019] Furthermore, the number of the image acquisition devices is two;

[0020] The two image acquisition devices are arranged on the same side of the conveying direction of the conveying mechanism; or, the two image acquisition devices are arranged opposite to each other and are respectively arranged on both sides of the conveying direction of the conveying mechanism.

[0021] Furthermore, the number of the image acquisition devices is three, two of the image acquisition devices are arranged on one side of the conveying direction of the conveying mechanism, and the other image acquisition device is arranged on the other side of the conveying direction of the conveying mechanism.

[0022] Furthermore, the conveying mechanism includes a lifting mechanism, and the lifting mechanism is used to lift the battery module.

[0023] The second aspect of the present disclosure provides a detection method, using the detection device described in the first aspect, including: a conveying mechanism conveys the battery module to a position, a manipulator grabs the battery module and places it in a first detection station;

[0024] The first image acquisition unit and the second image acquisition unit detect the first end plate side surface and the second end plate side surface of the first end plate of the battery module respectively; the third image acquisition unit and the fourth image acquisition unit detect the end plate top surface and the end plate bottom surface of the first end plate respectively; the fifth image acquisition unit detects the end plate end surface of the first end plate;

[0025] The rotating mechanism drives the battery module to rotate 180° within the plane where the bottom surface of the end plate is located;

[0026] The first image acquisition unit and the second image acquisition unit detect the first end plate side surface and the second end plate side surface of the second end plate of the battery module respectively; the third image acquisition unit and the fourth image acquisition unit detect the end plate top surface and the end plate bottom surface of the second end plate respectively; the fifth image acquisition unit detects the end plate end surface of the second end plate;

[0027] The robot grabs the battery module and takes it to the second inspection station;

[0028] The sixth image acquisition unit detects the first battery side surface of the battery module; the rotating clamp drives the battery module to rotate 90° in the plane where the end plate end surface is located, and the sixth image acquisition unit detects the battery top surface of the battery module; the rotating clamp drives the battery module to rotate 90° in the plane where the end plate end surface is located, and the sixth image acquisition unit detects the second battery side surface of the battery module; the rotating clamp drives the battery module to rotate 90° in the plane where the end plate end surface is located, and the sixth image acquisition unit detects the battery bottom surface of the battery module;

[0029] The robot puts the battery module back to the conveying mechanism.

[0030] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0031] The detection device provided by the embodiment of the present disclosure includes an image acquisition device, which includes a first image acquisition unit, a second image acquisition unit, a third image acquisition unit, a fourth image acquisition unit and a fifth image acquisition unit; the first image acquisition unit and the second image acquisition unit are respectively located on both sides of the first detection station, the first image acquisition unit is used to obtain the first image information of the side surface of the first end plate of the battery module, and transmit the first image information to the MES system, the second image acquisition unit is used to obtain the first image information of the side surface of the second end plate of the battery module, and transmit the first image information to the MES system; the first image acquisition unit and the second image acquisition unit are used to complete the detection of the two end plate sides of an end plate; the third image acquisition unit and the fourth image acquisition unit are arranged up and down, and are respectively located at the top and bottom of the first detection station, the third image acquisition unit is used to obtain the second image information of the top surface of the end plate of the battery module, and transmit the second image information to the MES system, the fourth image acquisition unit is used to obtain the second image information of the bottom surface of the end plate of the battery module, and transmit the second image information to the MES system; the third image acquisition unit and the fourth image acquisition unit are used to complete the detection of the end plate top surface and the end plate bottom surface of an end plate. The fifth image acquisition unit is disposed at one end of the first inspection station, and is used to obtain the third image information of the end plate end face of the battery module, and transmit the third image information to the MES system; the fifth image acquisition unit completes the inspection of the end plate end face of an end plate. The disclosed embodiment can complete the inspection of the five surfaces and details of the end plate of the battery module at one inspection station through the image acquisition device, and can quickly detect multiple defect items in each surface and fine structure, avoiding missed inspections, saving labor costs, and effectively improving inspection efficiency.

[0032] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0034] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0035] Figure 1 A schematic diagram of the structure of a battery module is shown;

[0036] Figure 2 A schematic diagram of the structure of a detection device provided by an embodiment of the present disclosure is shown;

[0037] Figure 3 A schematic diagram showing the structure of an image acquisition device in a detection device provided in an embodiment of the present disclosure is shown;

[0038] Figure 4 A schematic diagram showing the structure of a sixth image acquisition unit in the detection device provided in an embodiment of the present disclosure is shown;

[0039] Figure 5 A schematic diagram of the structure of a first image acquisition unit in a detection device provided in an embodiment of the present disclosure is shown.

[0040] Explanation of the numbers in the figure: 1. battery module; 11. bottom surface of battery; 12. top surface of battery; 13. side surface of battery; 14. first end plate; 141. top surface of end plate; 142. bottom surface of end plate; 143. side surface of end plate; 144. end surface of end plate; 15. second end plate; 2. rack; 21. first image acquisition unit; 211. area array camera; 22. second image acquisition unit; 23. third image acquisition unit; 24. fourth image acquisition unit; 25. fifth image acquisition unit; 26. sixth image acquisition unit; 261. line scan camera; 262. 3D camera; 263. line array camera; 3. manipulator; 4. conveying mechanism; 51. first detection station; 52. second detection station; 6. rotating mechanism; 71. X-axis; 72. Y-axis; 73. Z-axis. DETAILED DESCRIPTION

[0041] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0042] like Figure 1 As shown, the battery module 1 includes a battery bottom surface 11, a battery top surface 12 and two battery side surfaces 13, two end plates, and the end plates include an end plate top surface 141, an end plate bottom surface 142, a first end plate side surface 143, a second end plate side surface 143 and an end plate end surface 144.

[0043] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the detection device provided in the embodiment of the present disclosure includes an image acquisition device, and the image acquisition device is arranged on the frame 2. The image acquisition device includes a first image acquisition unit 21, a second image acquisition unit 22, a third image acquisition unit 23, a fourth image acquisition unit 24 and a fifth image acquisition unit 25. The first image acquisition unit 21, the second image acquisition unit 22, the third image acquisition unit 23, the fourth image acquisition unit 24 and the fifth image acquisition unit 25 can all be arranged on the frame 2.

[0044] The first image acquisition unit 21 and the second image acquisition unit 22 are respectively located on both sides of the first inspection station 51. The first image acquisition unit 21 is used to obtain the first image information of the first end plate side 143 of the battery module 1, and transmit the first image information to the MES system. The second image acquisition unit 22 is used to obtain the first image information of the second end plate side 143 of the battery module 1, and transmit the first image information to the MES system. The inspection of the two end plate side surfaces 143 of an end plate is completed by the first image acquisition unit 21 and the second image acquisition unit 22.

[0045] The third image acquisition unit 23 and the fourth image acquisition unit 24 are arranged up and down and are respectively located at the top and bottom of the first inspection station 51. The third image acquisition unit 23 is used to obtain the second image information of the end plate top surface 141 of the battery module 1, and transmit the second image information to the MES system. The fourth image acquisition unit 24 is used to obtain the second image information of the end plate bottom surface 142 of the battery module 1, and transmit the second image information to the MES system. The detection of the end plate top surface 141 and the end plate bottom surface 142 of an end plate is completed by the third image acquisition unit 23 and the fourth image acquisition unit 24.

[0046] The fifth image acquisition unit 25 is arranged at one end of the first inspection station 51, and is used to obtain the third image information of the end plate end face 144 of the battery module 1, and transmit the third image information to the MES system; the inspection of the end plate end face 144 of an end plate is completed through the fifth image acquisition unit 25.

[0047] The disclosed embodiment can complete the inspection of five surfaces and details of the end plate of the battery module 1 at one inspection station through the image acquisition device, and can quickly detect multiple defects in each surface and fine structure to avoid missed inspections, save labor costs, and effectively improve inspection efficiency.

[0048] The detection device provided by the embodiment of the present disclosure can simultaneously obtain surface images of various surfaces of the end plate of the battery module by arranging the first image acquisition unit, the second image acquisition unit, the third image acquisition unit, the fourth image acquisition unit and the fifth image acquisition unit at different positions, which is conducive to comprehensively detecting the surface quality of the end plate of the battery module and improving the detection efficiency. The separate and independent shooting of each image acquisition unit can further reduce the time that the target workpiece stays in the first detection station 51 to meet the shooting requirements, so that the detection can be carried out at a faster transmission speed, shortening the time consumed by the detection, which is conducive to improving production efficiency.

[0049] The first image acquisition unit 21 , the second image acquisition unit 22 , the third image acquisition unit 23 , the fourth image acquisition unit 24 and the fifth image acquisition unit 25 may all be shooting modules of the area array camera 211 .

[0050] The first image acquisition unit 21 and the second image acquisition unit 22 both include an array camera 211; the third image acquisition unit 23 and the fourth image acquisition unit 24 both include an array camera 211; the fifth image acquisition unit 25 includes an end face large field of view camera module and an end face small field of view camera module. By shooting with the end face large field of view camera module and the end face small field of view camera module respectively, a full range detection of the top surface and the side surface of the end plate of the battery module can be achieved, and then a more comprehensive and accurate judgment of the defect of the battery module can be made, thereby improving the accuracy of the detection.

[0051] In some specific embodiments, at least one of the first image acquisition unit 21, the second image acquisition unit 22, the third image acquisition unit 23, the fourth image acquisition unit 24 and the fifth image acquisition unit 25 includes a first mobile unit, a second mobile unit, a third mobile unit and a camera assembly; the first mobile unit, the second mobile unit and the third mobile unit can form a three-axis mobile module, so that the camera assembly can be adjusted up and down, front and back or left and right under the drive of the first mobile unit, the second mobile unit and the third mobile unit.

[0052] The first movable unit extends along a first direction, and the second movable unit is movably arranged on the first movable unit so that the second movable unit moves along the first direction; the second movable unit extends along a second direction, and the third movable unit is movably arranged on the second movable unit so that the third movable unit moves along the second direction; the third movable unit extends along a third direction, and the camera assembly is movably arranged on the third movable unit so that the camera assembly moves along the third direction; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0053] The first direction, the second direction and the third direction may be the X-axis 71, the Y-axis 72 and the Z-axis 73 directions of the frame 2 respectively, so that the camera assembly can be adjusted up and down, front and back or left and right.

[0054] In some specific embodiments, a rotating mechanism 6 is further included, and the rotating mechanism 6 is disposed on the frame 2, and the rotating mechanism 6 is used to drive the battery module 1 to rotate in the plane where the end plate bottom surface 142 is located. After the detection of the five surfaces and details of the first end plate 14 of the battery module 1 is completed, the battery module 1 is driven by the rotating mechanism 6 to rotate 180 degrees, and the detection of the second end plate 15 of the battery module 1 can be completed, which saves labor costs and the investment cost of an image acquisition device, and can effectively improve the detection efficiency.

[0055] The rotating mechanism 6 may include a motor and a carrier, the motor is disposed on the frame 2, the carrier is rotatably disposed on the frame 2, the output end of the motor is connected to the carrier, and is used to drive the carrier to rotate in a plane. Optionally, the carrier is fixed to a rotating shaft, the rotating shaft is provided with a driven gear, the output end of the motor is connected to a driving gear, and the driving gear is meshed with the driven gear, so that the motor can drive the carrier to rotate.

[0056] In some specific embodiments, the image acquisition device further includes a sixth image acquisition unit 26, which is disposed at one side of the second inspection station 52 and is used to obtain fourth image information of the battery side surface 13, the battery top surface 12 or the battery bottom surface 11 of the battery module 1, and transmit the fourth image information to the MES system. The detection of the battery side surface 13 can be completed by the sixth image acquisition unit 26.

[0057] The sixth image acquisition unit 26 may include a line scan camera 261, a 3D camera 262 or a linear array camera 263. By shooting with the line scan camera 261, the 3D camera 262 or the linear array camera 263 respectively, a full range detection of the top surface and the side surface of the end plate of the battery module can be achieved, and then a more comprehensive and accurate judgment of the defect of the battery module can be made, thereby improving the accuracy of the detection.

[0058] The sixth image acquisition unit 26 includes a three-axis moving module, and the line scan camera 261, the 3D camera 262 or the linear array camera 263 are arranged on the three-axis moving module, so that the line scan camera 261, the 3D camera 262 or the linear array camera 263 can be adjusted up and down, front and back or left and right under the drive of the three-axis moving module.

[0059] In some specific embodiments, a manipulator 3 is further included, and the manipulator 3 is used to clamp the battery module 1 to the first inspection station 51 or the second inspection station 52; the manipulator 3 can also put the inspected battery module 1 back to the conveying device. In this embodiment, the second inspection station 52 is located above the first inspection station 51, and the manipulator 3 can pick up the battery module 1 located at the first inspection station 51 and then enter the second inspection station 52.

[0060] The manipulator 3 includes a rotating jaw, which is used to drive the battery module 1 to rotate in the plane where the end plate end surface 144 is located. After the sixth image acquisition unit 26 detects one battery side surface 13 of the battery module 1, the battery module 1 can be rotated 90° by rotating the jaw. At this time, the battery top surface 12 or the battery bottom surface 11 of the battery module 1 is opposite to the sixth image acquisition unit 26, so that the detection of the battery top surface 12 or the battery bottom surface 11 can be completed; then, the battery module 1 can be rotated another 90° by rotating the jaw, and the sixth image acquisition unit 26 completes the detection of another battery side surface 13 of the battery module 1; then, the battery module 1 can be rotated another 90° by rotating the jaw, and at this time, the battery bottom surface 11 or the battery top surface 12 of the battery module 1 is opposite to the sixth image acquisition unit 26, so that the detection of the battery bottom surface 11 or the battery top surface 12 can be completed.

[0061] In some specific embodiments, a conveying mechanism 4 is also included, and the conveying mechanism 4 can convey the battery module 1 along a set direction. The conveying mechanism 4 is arranged beside the image acquisition device, and is used to drive the battery module 1 through the image acquisition device. The battery module 1 to be inspected can be transported to the first inspection station 51 by the conveying mechanism 4. The manipulator 3 grabs the battery module 1 and puts it into the first inspection station 51 for inspection. After the first inspection station 51 completes the inspection of each surface of the battery end plate, the manipulator 3 grabs the battery module 1 and lifts it into the second inspection station 52. After the second inspection station 52 completes the inspection of the battery top surface 12, the battery bottom surface 11 and the two battery side surfaces 13, the manipulator 3 puts the battery module 1 back to the conveying device.

[0062] The conveying mechanism 4 may be a multi-dimensional moving mechanism having two or more dimensions.

[0063] In some specific implementations, the number of image acquisition devices is two; the two image acquisition devices are arranged on the same side of the conveying direction of the conveying mechanism 4; or the two image acquisition devices are arranged opposite to each other and are respectively arranged on both sides of the conveying direction of the conveying mechanism 4. In this embodiment, by arranging two image acquisition devices, the detection efficiency can be improved and the total detection time can be shortened.

[0064] Optionally, two battery modules 1 may be placed on a carrier carrying the battery modules 1 , and the two image acquisition devices correspond to the two battery modules 1 one by one.

[0065] In some specific implementations, the number of image acquisition devices is three, two of which are arranged on one side of the conveying direction of the conveying mechanism 4, and the other image acquisition device is arranged on the other side of the conveying direction of the conveying mechanism 4. This embodiment can improve the detection efficiency and shorten the total detection time by arranging four image acquisition devices.

[0066] In some specific embodiments, the conveying mechanism 4 includes a lifting mechanism, which can be arranged on the frame 2. The lifting mechanism can be telescopically movable in the height direction. The lifting mechanism is used to lift the carrier carrying the battery module 1. When the carrier is lifted to a set position, it is unlocked to release the battery module 1 on the carrier.

[0067] The lifting mechanism may include a lifting cylinder. After the conveying mechanism 4 conveys the carrier into place, the stopping cylinder blocks the carrier. After the production line PLC detects that the carrier is in place, the lifting cylinder lifts the carrier to separate the carrier from the conveying mechanism 4. The carrier is unlocked, and the manipulator 3 grabs the battery module 1 to the first inspection station 51. After all battery modules 1 on the carrier are inspected, the lifting cylinder descends, and the carrier is lowered to the speed chain of the conveying mechanism 4, and the production line PLC allows the carrier to flow out.

[0068] The detection method provided by the embodiment of the present disclosure uses the detection device provided by the embodiment of the present disclosure, and the detection method includes: the conveying mechanism 4 conveys the battery module 1 to a position, and the manipulator 3 grabs the battery module 1 and places it in the first detection station 51;

[0069] The first image acquisition unit 21 and the second image acquisition unit 22 respectively detect the first end plate side surface 143 and the second end plate side surface 143 of the first end plate 14 of the battery module 1; the third image acquisition unit 23 and the fourth image acquisition unit 24 respectively detect the end plate top surface 141 and the end plate bottom surface 142 of the first end plate 14; the fifth image acquisition unit 25 detects the end plate end surface 144 of the first end plate 14;

[0070] The rotating mechanism 6 drives the battery module 1 to rotate 180° within the plane where the end plate bottom surface 142 is located;

[0071] The first image acquisition unit 21 and the second image acquisition unit 22 respectively detect the first end plate side surface 143 and the second end plate side surface 143 of the second end plate 15 of the battery module 1; the third image acquisition unit 23 and the fourth image acquisition unit 24 respectively detect the end plate top surface 141 and the end plate bottom surface 142 of the second end plate 15; the fifth image acquisition unit 25 detects the end plate end surface 144 of the second end plate 15;

[0072] The robot 3 grabs the battery module 1 to the second inspection station 52;

[0073] The sixth image acquisition unit 26 detects the first battery side surface 13 of the battery module 1; the rotating clamp drives the battery module 1 to rotate 90° in the plane where the end plate end surface 144 is located, and the sixth image acquisition unit 26 detects the battery top surface 12 of the battery module 1; the rotating clamp drives the battery module 1 to rotate 90° in the plane where the end plate end surface 144 is located, and the sixth image acquisition unit 26 detects the second battery side surface 13 of the battery module 1; the rotating clamp drives the battery module 1 to rotate 90° in the plane where the end plate end surface 144 is located, and the sixth image acquisition unit 26 detects the battery bottom surface 11 of the battery module 1;

[0074] The robot arm 3 puts the battery module 1 back to the conveying mechanism 4 .

[0075] The detection method provided by the embodiment of the present disclosure can complete the detection of the battery bottom surface 11, the battery top surface 12 and the two battery side surfaces 13 (four large surfaces), the end plate top surface 141, the end plate bottom surface 142, the first end plate side surface 143, the second end plate side surface 143 and the end plate end surface 144 of the two end plates. That is, the detection device provided by the embodiment of the present disclosure can complete the detection of the five surfaces and details of the two end plates of the battery module 1 and the detection of the four large surfaces of the battery at two detection stations, and can quickly detect multiple defect items in each surface and fine structure, avoid missed detection, save labor costs, and effectively improve detection efficiency.

[0076] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0077] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0078] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A detection device, characterized in that: include: An image acquisition device, comprising a first image acquisition unit (21), a second image acquisition unit (22), a third image acquisition unit (23), a fourth image acquisition unit (24) and a fifth image acquisition unit (25); The first image acquisition unit (21) and the second image acquisition unit (22) are respectively located on both sides of the first inspection station (51), the first image acquisition unit (21) is used to obtain first image information of the first end plate side surface (143) of the battery module (1), and transmit the first image information to the MES system, and the second image acquisition unit (22) is used to obtain first image information of the second end plate side surface (143) of the battery module (1), and transmit the first image information to the MES system; The third image acquisition unit (23) and the fourth image acquisition unit (24) are arranged up and down and are respectively located at the top and bottom of the first inspection station (51), the third image acquisition unit (23) is used to obtain second image information of the top surface (141) of the end plate of the battery module (1), and transmit the second image information to the MES system, and the fourth image acquisition unit (24) is used to obtain second image information of the bottom surface (142) of the end plate of the battery module (1), and transmit the second image information to the MES system; The fifth image acquisition unit (25) is arranged at one end of the first inspection station (51) and is used to obtain third image information of the end plate end surface (144) of the battery module (1) and transmit the third image information to the MES system.

2. The detection device according to claim 1, characterized in that: At least one of the first image acquisition unit (21), the second image acquisition unit (22), the third image acquisition unit (23), the fourth image acquisition unit (24) and the fifth image acquisition unit (25) comprises a first moving unit, a second moving unit, a third moving unit and a camera assembly; The first movable unit extends along a first direction, and the second movable unit is movably disposed on the first movable unit so that the second movable unit moves along the first direction; The second movable unit extends along a second direction, and the third movable unit is movably disposed on the second movable unit so that the third movable unit moves along the second direction; The third moving unit extends along a third direction, and the camera assembly is movably disposed on the third moving unit so that the camera assembly moves along the third direction; The first direction, the second direction and the third direction are perpendicular to each other.

3. The detection device according to claim 1, characterized in that: It also includes a rotating mechanism (6), which is used to drive the battery module (1) to rotate within the plane where the bottom surface (142) of the end plate is located.

4. The detection device according to claim 1, characterized in that: The invention also includes a sixth image acquisition unit (26), which is arranged at one side of the second inspection station (52) and is used to obtain fourth image information of the battery side surface (13), the battery top surface (12) or the battery bottom surface (11) of the battery module (1), and transmit the fourth image information to the MES system.

5. The detection device according to claim 4, characterized in that: It also includes a robot (3), the robot (3) being used to clamp the battery module (1) to the first inspection station (51) or the second inspection station (52); Wherein, the manipulator (3) comprises a rotating jaw, and the rotating jaw is used to drive the battery module (1) to rotate within the plane where the end plate end surface (144) is located.

6. The detection device according to any one of claims 1 to 5, characterized in that: It also comprises a conveying mechanism (4), which is arranged beside the image acquisition device and is used to drive the battery module (1) to pass through the image acquisition device.

7. The detection device according to claim 6, characterized in that: The number of the image acquisition devices is two; The two image acquisition devices are arranged on the same side of the conveying direction of the conveying mechanism (4); or, the two image acquisition devices are arranged opposite to each other and are respectively arranged on both sides of the conveying direction of the conveying mechanism (4).

8. The detection device according to claim 6, characterized in that: The number of the image acquisition devices is three, two of which are arranged on one side of the conveying direction of the conveying mechanism (4), and the other image acquisition device is arranged on the other side of the conveying direction of the conveying mechanism (4).

9. The detection device according to claim 6, characterized in that: The conveying mechanism (4) comprises a lifting mechanism, and the lifting mechanism is used to lift the carrier carrying the battery module (1).

10. A detection method, using the detection device according to any one of claims 1 to 9, characterized in that: include: The conveying mechanism (4) conveys the battery module (1) to a certain position, and the robot (3) grabs the battery module (1) and places it at the first inspection station (51); The first image acquisition unit (21) and the second image acquisition unit (22) respectively detect a first end plate side surface (143) and a second end plate side surface (143) of a first end plate (14) of the battery module (1); the third image acquisition unit (23) and the fourth image acquisition unit (24) respectively detect an end plate top surface (141) and an end plate bottom surface (142) of the first end plate (14); and the fifth image acquisition unit (25) detects an end plate end surface (144) of the first end plate (14); The rotating mechanism (6) drives the battery module (1) to rotate 180° within the plane where the bottom surface (142) of the end plate is located; The first image acquisition unit (21) and the second image acquisition unit (22) respectively detect a first end plate side surface (143) and a second end plate side surface (143) of a second end plate (15) of the battery module (1); the third image acquisition unit (23) and the fourth image acquisition unit (24) respectively detect an end plate top surface (141) and an end plate bottom surface (142) of the second end plate (15); and the fifth image acquisition unit (25) detects an end plate end surface (144) of the second end plate (15); The robot (3) grabs the battery module (1) and moves it to the second inspection station (52); The sixth image acquisition unit (26) detects a first battery side surface (13) of the battery module (1); the rotating clamp drives the battery module (1) to rotate 90° within the plane where the end plate end surface (144) is located, and the sixth image acquisition unit (26) detects a battery top surface (12) of the battery module (1); the rotating clamp drives the battery module (1) to rotate 90° within the plane where the end plate end surface (144) is located, and the sixth image acquisition unit (26) detects a second battery side surface (13) of the battery module (1); the rotating clamp drives the battery module (1) to rotate 90° within the plane where the end plate end surface (144) is located, and the sixth image acquisition unit (26) detects a battery bottom surface (11) of the battery module (1); The robot (3) puts the battery module (1) back into the conveying mechanism (4).

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