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 a conveying mechanism, a clamping jaw mechanism, a first image acquisition device and a second image acquisition device, the conveying mechanism can convey a carrier carrying a battery module along a set direction; the clamping jaw mechanism is used for suspending the battery module at a detection station or putting the battery module back to a carrier; the first image acquisition device is arranged beside the conveying mechanism, and the second image acquisition device is arranged above the conveying mechanism; according to the detection device provided by the embodiment of the invention, the detection of the battery bottom surface, the battery top surface, the two battery side surfaces (four large surfaces) and the two end plates can be completed, 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 cross-section. The work intensity of manually inspecting the appearance of each end plate is relatively high. In addition, the 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 very easy to miss 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: a conveying mechanism, a clamping mechanism, a first image acquisition device and a second image acquisition device;

[0006] The conveying mechanism can convey the carrier carrying the battery module along a set direction;

[0007] The clamping mechanism is used to suspend the battery module at the inspection station or put it back into the carrier;

[0008] The first image acquisition device is arranged beside the conveying mechanism, and the second image acquisition device is arranged above the conveying mechanism;

[0009] The first image acquisition device 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;

[0010] The first image acquisition unit and the second image acquisition unit are respectively located at both sides of the inspection station, the first image acquisition unit is used to obtain first image information of the first side surface of the battery module, and transmit the first image information to the MES system, the second image acquisition unit is used to obtain second image information of the second side surface of the battery module, and transmit the second image information to the MES system; the third image acquisition unit is arranged below the inspection station, the third image acquisition unit is used to obtain third image information of the bottom surface of the battery module, and transmit the third image information to the MES system; the fourth image acquisition unit and the fifth image acquisition unit are respectively located at both ends of the inspection station, the fourth image acquisition unit is used to obtain fourth image information of the first end surface of the battery module, and transmit the fourth image information to the MES system, the fifth image acquisition unit is used to obtain fifth image information of the second end surface of the battery module, and transmit the fifth image information to the MES system;

[0011] The second image acquisition device includes a sixth image acquisition unit, which is used to obtain sixth image information of the top surface of the battery of the battery module and transmit the sixth image information to the MES system.

[0012] Furthermore, the second image acquisition device includes a seventh image acquisition unit, which is used to obtain seventh image information of the end plate top surface and the end plate side surface of the end plate of the battery module, and transmit the seventh image information to the MES system.

[0013] Furthermore, the first image acquisition unit and the second image acquisition unit both include a first three-axis movable module and a first camera module, and the first camera module is arranged on the first three-axis movable module so that the first three-axis movable module can drive the first camera module to move to a set position.

[0014] Furthermore, the first camera module includes a line scan camera component, a 3D camera component or a linear array camera component.

[0015] Further, the third image acquisition unit includes a linear guide rail and a second camera module movably arranged on the linear guide rail;

[0016] The second camera module includes two area array cameras, the two area array cameras are arranged at an interval, and the interval between the two area array cameras is adjustable.

[0017] Furthermore, the sixth image acquisition unit includes a two-axis moving module and a third camera module, and the third camera module is arranged on the two-axis moving module so that the third camera module can move along the Y axis or the Z axis.

[0018] Furthermore, the seventh image acquisition unit includes a second three-axis moving module and a fourth camera module, and the fourth camera module is arranged on the second three-axis moving module, so that the second three-axis moving module can drive the fourth camera module to move.

[0019] Further, the clamping jaw mechanism includes an air expansion clamping jaw;

[0020] The pneumatic claw comprises an inserted claw rod, a pneumatic claw head and a driving cylinder;

[0021] The plug-in claw rod is used to be plugged into the receiving socket in the battery module;

[0022] The inflatable claw head is embedded in the peripheral wall of the plug-in claw rod;

[0023] The driving cylinder is arranged at the other end of the plug-in claw rod and is connected to the pneumatic claw through an air path;

[0024] The driving cylinder can drive the pneumatic claw head to extend outward from the peripheral wall of the insertion rod to be pressed and fixed in the receiving hole position under the air supply state;

[0025] The driving cylinder can drive the inflatable claw head to shrink inwardly to the peripheral wall of the insertion rod in the state of exhausting air.

[0026] Furthermore, the clamping mechanism further includes a support frame, the pneumatic clamping jaws are respectively installed at the four corners of the support frame, and the driving controller is respectively connected to the four pneumatic clamping jaws through a ball screw mechanism, and can at least drive the pneumatic clamping jaws to move along the length and width directions of the support frame;

[0027] And / or, the clamping mechanism includes a mounting shell and a compression spring, the mounting shell has a accommodating cavity inside, the compression spring is arranged in the accommodating cavity, and one end abuts against the inner wall of the mounting shell, and the other end is transmission connected to the insertion claw rod through a lifting plate, the compression spring can apply an elastic force toward the insertion claw rod through the lifting plate, and when the insertion resistance of the insertion claw rod is greater than the elastic force of the compression spring, the insertion claw rod can be partially retracted in the accommodating cavity toward the lifting plate.

[0028] A second aspect of the present disclosure provides a detection method, using the detection device described in the first aspect, comprising:

[0029] Determine whether the battery module on the carrier of the conveying mechanism is skewed. When the battery module is skewed, an alarm is issued and manual adjustment is performed; when the battery is not skewed, the lifting mechanism is unlocked and the carrier is unlocked;

[0030] The clamping mechanism moves the battery module to the first inspection station, the first image acquisition unit obtains the first image information of the first side of the battery module, and transmits the first image information to the MES system; the second image acquisition unit obtains the second image information of the second side of the battery module, and transmits the second image information to the MES system; the third image acquisition unit obtains the third image information of the bottom surface of the battery module, and transmits the third image information to the MES system, the fourth image acquisition unit obtains the fourth image information of the first end surface, and transmits the fourth image information to the MES system; the fifth image acquisition unit obtains the fifth image information of the second end surface of the battery module, and transmits the fifth image information to the MES system;

[0031] The clamping mechanism moves the battery module to the second inspection station, and the sixth image acquisition unit obtains sixth image information of the top surface of the battery module and transmits the sixth image information to the MES system;

[0032] The clamping mechanism holds the battery module and moves the battery module to a carrier of the conveying mechanism.

[0033] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0034] The detection device provided by the embodiment of the present disclosure includes a conveying mechanism, a clamping mechanism, a first image acquisition device and a second image acquisition device; the conveying mechanism can transport a carrier carrying a battery module along a set direction; the clamping mechanism is used to suspend the battery module at a detection station or put it back into the carrier; the first image acquisition device is arranged beside the conveying mechanism, and the second image acquisition device is arranged above the conveying mechanism; the first image acquisition device 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.

[0035] The first image acquisition unit and the second image acquisition unit are respectively located at both sides of the inspection station, the first image acquisition unit is used to obtain first image information of the first side of the battery module, and transmit the first image information to the MES system, the second image acquisition unit is used to obtain second image information of the second side of the battery module, and transmit the second image information to the MES system; the third image acquisition unit is arranged below the inspection station, the third image acquisition unit is used to obtain third image information of the bottom surface of the battery module, and transmit the third image information to the MES system; the fourth image acquisition unit and the fifth image acquisition unit are respectively located at both ends of the inspection station, the fourth image acquisition unit is used to obtain fourth image information of the first end surface of the battery module, and transmit the fourth image information to the MES system, the fifth image acquisition unit is used to obtain fifth image information of the second end surface of the battery module, and transmit the fifth image information to the MES system. In the disclosed embodiment, after the clamp mechanism suspends the battery module at the detection station, the first image acquisition unit obtains the first image information of the first side of the battery module, the second image acquisition unit obtains the second image information of the second side of the battery module, the third image acquisition unit obtains the third image information of the bottom of the battery module, the fourth image acquisition unit obtains the fourth image information of the first end face of the battery module, and the fifth image acquisition unit is used for the fifth image information of the second end face of the battery module. After the battery module is suspended at the detection station, the detection device can complete the detection of three large surfaces (battery bottom surface, first battery side surface and second battery side surface) and two end surfaces (first end surface and second end surface).

[0036] The second image acquisition device includes a sixth image acquisition unit, which is used to obtain sixth image information of the battery top surface of the battery module and transmit the sixth image information to the MES system. When the battery module is put back into the carrier, the sixth image acquisition unit detects the battery top surface of the battery module to complete the detection of the battery top surface.

[0037] The detection device provided in the embodiment of the present disclosure can complete the detection of the battery bottom surface, the battery top surface, the two battery side surfaces (four large surfaces), and the two end plates. That is, the detection device provided in the embodiment of the present disclosure can complete the detection of the six surfaces and details of the battery module, and can quickly detect multiple defects in each surface and fine structure, avoiding missed detection, saving labor costs, and effectively improving detection efficiency.

[0038] 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

[0039] 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:

[0040] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0041] Figure 1 A schematic diagram of the structure of a battery module is shown;

[0042] Figure 2 A schematic diagram showing the working process of the detection device provided by an embodiment of the present disclosure is shown;

[0043] Figure 3 A schematic diagram showing the structure of a first image acquisition unit or a second image acquisition unit in a detection device provided in an embodiment of the present disclosure is shown;

[0044] Figure 4 The structure of the third image acquisition unit in the detection device provided by the embodiment of the present disclosure is shown;

[0045] Figure 5 The structure of the sixth image acquisition unit in the detection device provided by the embodiment of the present disclosure is shown;

[0046] Figure 6 The structure of the seventh image acquisition unit in the detection device provided by the embodiment of the present disclosure is shown;

[0047] Figure 7 A schematic diagram of the structure of a clamping mechanism in a detection device provided in an embodiment of the present disclosure is shown;

[0048] Figure 8 for Figure 7 Enlarged view of point a in the middle.

[0049] 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; 27. seventh image acquisition unit; 4. conveying mechanism; 51. first detection station; 52. second detection station; 71. X-axis; 72. Y-axis; 73. Z-axis; 8. carrier; 91. support frame; 92. inflation claw; 93. mounting shell; 94. compression spring. DETAILED DESCRIPTION

[0050] 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.

[0051] 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. The two battery side surfaces 13 are respectively a first battery side surface and a second battery side surface.

[0052] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the detection device provided by the embodiment of the present disclosure includes a conveying mechanism 4, a clamping mechanism, a first image acquisition device and a second image acquisition device; the conveying mechanism 4 can convey the carrier 8 carrying the battery module 1 along a set direction; the conveying mechanism 4 can be a multi-dimensional mobile mechanism with more than two dimensions. The clamping mechanism is used to suspend the battery module 1 at the detection station or put it back on the carrier 8; the first image acquisition device is arranged beside the conveying mechanism 4, and the second image acquisition device is arranged above the conveying mechanism 4; the first 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.

[0053] The first image acquisition unit 21 and the second image acquisition unit 22 are respectively located at both sides of the detection station. The first image acquisition unit 21 is used to obtain first image information of the first side surface 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 second image information of the second side surface of the battery module 1 and transmit the second image information to the MES system; the third image acquisition unit 23 is arranged below the detection station. The third image acquisition unit 23 is used to obtain third image information of the bottom surface of the battery module 1 and transmit the third image information to the MES system; the fourth image acquisition unit 24 and the fifth image acquisition unit 25 are respectively located at both ends of the detection station. The fourth image acquisition unit 24 is used to obtain fourth image information of the first end surface of the battery module 1 and transmit the fourth image information to the MES system. The fifth image acquisition unit 25 is used to obtain fifth image information of the second end surface of the battery module 1 and transmit the fifth image information to the MES system. In the disclosed embodiment, after the clamp mechanism suspends the battery module 1 at the detection station, the first image acquisition unit 21 obtains the first image information of the first side of the battery module 1, the second image acquisition unit 22 obtains the second image information of the second side of the battery module 1, the third image acquisition unit 23 obtains the third image information of the bottom of the battery module 1, the fourth image acquisition unit 24 obtains the fourth image information of the first end face of the battery module 1, and the fifth image acquisition unit 25 is used for the fifth image information of the second end face of the battery module 1. After the battery module 1 is suspended at the detection station, the detection device can complete the detection of three large surfaces (battery bottom surface 11, first battery side surface 13 and second battery side surface 13) and two end surfaces (first end surface and second end surface).

[0054] The second image acquisition device includes a sixth image acquisition unit 26, which is used to obtain sixth image information of the battery top surface 12 of the battery module 1 and transmit the sixth image information to the MES system. When the battery module 1 is put back into the carrier 8, the sixth image acquisition unit 26 detects the battery top surface 12 of the battery module 1, and the detection of the battery top surface 12 can be completed.

[0055] The detection device provided in the embodiment of the present disclosure can simultaneously obtain surface images of six surfaces of the battery module 1 by arranging the first image acquisition unit 21, the second image acquisition unit 22, the third image acquisition unit 23, the fourth image acquisition unit 24, the fifth image acquisition unit 25, the sixth image acquisition unit 26 and the seventh image acquisition unit 27 at different positions, which is conducive to comprehensive detection of the surface quality of the battery module 1 and improves the detection efficiency. The separate and independent shooting of each image acquisition unit can further reduce the time that the target workpiece stays at the detection station to meet the shooting, 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.

[0056] The detection device provided in the embodiment of the present disclosure can complete the detection of the battery bottom surface 11, the battery top surface 12, the two battery side surfaces 13 (four large surfaces), and the two end plates. That is, the detection device provided in the embodiment of the present disclosure can complete the detection of the six surfaces and details of the battery module 1, and can quickly detect multiple defects in each surface and fine structure, avoid missed detection, save labor costs, and effectively improve detection efficiency.

[0057] The detection device provided in the embodiment of the present disclosure can complete the detection of each surface of the battery module 1 without rotating the battery module 1, thereby improving the detection efficiency.

[0058] In some specific embodiments, the second image acquisition device includes a seventh image acquisition unit 27, and the seventh image acquisition unit 27 is used to obtain seventh image information of the end plate top surface 141 and the end plate side surface 143 of the end plate of the battery module 1, and transmit the seventh image information to the MES system. The seventh image acquisition unit 27 can be used to complete the supplementary shooting of the end plate top surface 141 and the end plate side surface 143, further improving the detection quality. By shooting the end plate top surface 141 and the end plate side surface 143 respectively by the seventh image acquisition unit 27, a full range detection of the end plate top surface 141 and the end plate side surface 143 of the battery module 1 can be achieved, and then a more comprehensive and accurate judgment can be made on the defect of the battery module 1, thereby improving the accuracy of the detection.

[0059] The seventh image acquisition unit 27 is used to obtain the seventh image information of the end plate top surface 141 and the end plate side surface 143 of the first end plate 14 or the second end plate 15 of the battery module 1, and transmit the seventh image information to the MES system. The seventh image acquisition unit 27 can complete the supplementary shooting of the end plate top surface 141 and the end plate side surface 143, further improving the detection quality.

[0060] The first image acquisition unit 21 , the second image acquisition unit 22 , the third image acquisition unit 23 , the fourth image acquisition unit 24 , the fifth image acquisition unit 25 , the sixth image acquisition unit 26 and the sixth image acquisition unit 26 may all be installed on the frame 2 .

[0061] The first image acquisition unit 21, the second image acquisition unit 22, the third image acquisition unit 23, the fourth image acquisition unit 24, the fifth image acquisition unit 25, the sixth image acquisition unit 26 and the seventh image acquisition unit 27 can all be a combination of one or more of the area array camera 211 shooting module, the line scan camera 261, the 3D camera 262 and the line array camera 263.

[0062] Optionally, the first image acquisition unit 21 and the second image acquisition unit 22 are both line scan cameras 261. The third image acquisition unit 23 includes a line scan camera 261 and an area array camera 211. The fourth image acquisition unit 24 and the fifth image acquisition unit 25 both include a split-shot end surface area array camera 211 and an overall end surface area array camera 211. The sixth image acquisition unit 26 includes a line scan camera 261 and an area array camera 211. The seventh image acquisition unit 27 includes an area array camera 211.

[0063] Optionally, 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, the fifth image acquisition unit 25, the sixth image acquisition unit 26 and the seventh image acquisition unit 27 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.

[0064] 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.

[0065] 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.

[0066] In some specific embodiments, the first image acquisition unit 21 and the second image acquisition unit 22 both include a first three-axis mobile module and a first camera module, the first three-axis mobile module is mounted on the frame 2, and the first camera module is arranged on the first three-axis mobile module, so that the first three-axis mobile module can drive the first camera module to move to a set position. In other words, the first three-axis mobile module can adjust the first camera module up and down, front and back, or left and right.

[0067] In some specific embodiments, the first camera module includes a line scan camera 261 component, a 3D camera 262 component, or a line array camera 263 component.

[0068] In some specific embodiments, the third image acquisition unit 23 includes a linear guide rail and a second camera module movably arranged on the linear guide rail; the linear guide rail is installed on the frame 2. The second camera module can move along the linear guide rail. The second camera module includes two area array cameras 211, the two area array cameras 211 are arranged at intervals, and the interval between the two area array cameras 211 is adjustable, which can improve the accuracy of detection.

[0069] In some specific embodiments, the sixth image acquisition unit 26 includes a two-axis moving module and a third camera module, the two-axis moving module is installed on the frame 2, and the third camera module is arranged on the two-axis moving module, so that the third camera module can move along the Y axis 72 or the Z axis 73. In other words, the third camera module can move in the extension direction of the Y axis 72 or the Z axis 73.

[0070] In some specific embodiments, the seventh image acquisition unit 27 includes a second three-axis mobile module and a fourth camera module, the second three-axis mobile module is installed on the frame 2, and the fourth camera module is arranged on the second three-axis mobile module, so that the second three-axis mobile module can drive the fourth camera module to move. In other words, the second three-axis mobile module can adjust the fourth camera module up and down, front and back, or left and right.

[0071] In some specific embodiments, the clamping mechanism includes an inflatable claw 92; the inflatable claw 92 includes an inserted claw rod, an inflatable claw head and a driving cylinder; the inserted claw rod is used to be plugged into the receiving hole in the battery module 1; the inflatable claw head is embedded in the peripheral wall of the inserted claw rod; the driving cylinder is arranged at the other end of the inserted claw rod and is connected to the inflatable claw 92 through an air path; the driving cylinder can drive the inflatable claw head to extend outward from the peripheral wall of the inserted rod to be pressed and fixed in the receiving hole in the air supply state; the driving cylinder can drive the inflatable claw head to retract inward to the peripheral wall of the inserted rod in the air exhaust state.

[0072] In some specific embodiments, the clamping mechanism further includes a support frame 91, and the pneumatic clamping jaws 92 are respectively installed at the four corners of the support frame 91. The driving controller is respectively connected to the four pneumatic clamping jaws 92 through a ball screw mechanism, and can at least drive the pneumatic clamping jaws 92 to move along the length and width directions of the support frame 91.

[0073] In some specific embodiments, the clamping mechanism includes a mounting shell 93 and a compression spring 94. The mounting shell 93 has a accommodating cavity inside. The compression spring 94 is arranged in the accommodating cavity, and one end is abutted against the inner wall of the mounting shell 93, and the other end is transmission-connected to the insertion claw rod through a lifting plate. The compression spring 94 can apply an elastic force toward the insertion claw rod through the lifting plate. When the insertion resistance of the insertion claw rod is greater than the elastic force of the compression spring 94, the insertion claw rod can be partially retracted toward the lifting plate in the accommodating cavity.

[0074] The detection method provided in the embodiment of the present disclosure uses the detection device provided in the embodiment of the present disclosure, including:

[0075] Determine whether the battery module 1 on the carrier 8 of the conveying mechanism 4 is skewed. When the battery module 1 is skewed, an alarm is issued and manual adjustment is performed; when the battery is not skewed, the lifting mechanism is unlocked and the carrier 8 is unlocked;

[0076] The clamping mechanism moves the battery module 1 to the first inspection station 51, the first image acquisition unit 21 obtains the first image information of the first side of the battery module 1, and transmits the first image information to the MES system; the second image acquisition unit 22 obtains the second image information of the second side of the battery module 1, and transmits the second image information to the MES system; the third image acquisition unit 23 obtains the third image information of the bottom surface of the battery module 1, and transmits the third image information to the MES system, the fourth image acquisition unit 24 obtains the fourth image information of the first end surface, and transmits the fourth image information to the MES system; the fifth image acquisition unit 25 obtains the fifth image information of the second end surface of the battery module 1, and transmits the fifth image information to the MES system;

[0077] The clamping mechanism moves the battery module 1 to the second inspection station 52, and the sixth image acquisition unit 26 obtains the sixth image information of the top surface of the battery module 1, and transmits the sixth image information to the MES system;

[0078] The clamping mechanism holds the battery module 1 and moves the battery module 1 to the carrier 8 of the conveying mechanism 4 .

[0079] 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, the two battery side surfaces 13 (four large surfaces), and the two end plates. That is, the detection device provided by the embodiment of the present disclosure can complete the detection of the six surfaces and details of the battery module 1, and multiple defects can be quickly detected in each surface and fine structure to avoid missed detection, save labor costs, and effectively improve detection efficiency.

[0080] 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.

[0081] 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.

[0082] 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: A conveying mechanism (4), a clamping mechanism, a first image acquisition device and a second image acquisition device; The conveying mechanism (4) can convey the carrier (8) carrying the battery module (1) along a set direction; The clamping mechanism is used to suspend the battery module (1) at a testing station or put it back into a carrier (8); The first image acquisition device is arranged beside the conveying mechanism (4), and the second image acquisition device is arranged above the conveying mechanism (4); The first image acquisition device comprises 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 at two sides of the inspection station, the first image acquisition unit (21) is used to obtain first image information of a first side surface 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 second image information of a second side surface of the battery module (1), and transmit the second image information to the MES system; the third image acquisition unit (23) is arranged below the inspection station, the third image acquisition unit (23) is used to obtain third image information of the bottom surface of the battery module (1), and transmit the third image information to the MES system; the fourth image acquisition unit (24) and the fifth image acquisition unit (25) are respectively located at two ends of the inspection station, the fourth image acquisition unit (24) is used to obtain fourth image information of a first end surface of the battery module (1), and transmit the fourth image information to the MES system, and the fifth image acquisition unit (25) is used to obtain fifth image information of a second end surface of the battery module (1), and transmit the fifth image information to the MES system; The second image acquisition device comprises a sixth image acquisition unit (26), and the sixth image acquisition unit (26) is used to obtain sixth image information of the battery top surface (12) of the battery module (1), and transmit the sixth image information to the MES system.

2. The detection device according to claim 1, characterized in that: The second image acquisition device comprises a seventh image acquisition unit (27), the seventh image acquisition unit (27) being used to obtain seventh image information of the end plate top surface (141) and the end plate side surface (143) of the end plate of the battery module (1), and transmit the seventh image information to the MES system.

3. The detection device according to claim 1, characterized in that: The first image acquisition unit (21) and the second image acquisition unit (22) both comprise a first three-axis movable module and a first camera module, wherein the first camera module is arranged on the first three-axis movable module so that the first three-axis movable module can drive the first camera module to move to a set position.

4. The detection device according to claim 3, characterized in that: The first camera module includes a line scan camera (261) component, a 3D camera (262) component or a line array camera (263) component.

5. The detection device according to claim 1, characterized in that: The third image acquisition unit (23) comprises a linear guide rail and a second camera module movably arranged on the linear guide rail; The second camera module comprises two area array cameras (211), the two area array cameras (211) are arranged at an interval, and the interval between the two area array cameras (211) is adjustable.

6. The detection device according to claim 1, characterized in that: The sixth image acquisition unit (26) comprises a two-axis moving module and a third camera module, wherein the third camera module is arranged on the two-axis moving module so that the third camera module can move along the Y axis (72) or the Z axis (73).

7. The detection device according to claim 2, characterized in that: The seventh image acquisition unit (27) comprises a second three-axis moving module and a fourth camera module, wherein the fourth camera module is arranged on the second three-axis moving module so that the second three-axis moving module can drive the fourth camera module to move.

8. The detection device according to claim 1, characterized in that: The clamping jaw mechanism comprises an air expansion clamping jaw (92); The pneumatic claw (92) comprises an inserted claw rod, a pneumatic claw head and a driving cylinder; The plug-in claw rod is used for plugging into the receiving socket in the battery module (1); The inflatable claw head is embedded in the peripheral wall of the plug-in claw rod; The driving cylinder is arranged at the other end of the insertion claw rod and is connected to the pneumatic clamping claw (92) through an air path; The driving cylinder can drive the pneumatic claw head to extend outward from the peripheral wall of the insertion rod to be pressed and fixed in the receiving hole position under the air supply state; The driving cylinder can drive the inflatable claw head to shrink inwardly to the peripheral wall of the insertion rod in the state of exhausting air.

9. The detection device according to claim 8, characterized in that: The clamping mechanism also includes a support frame (91), the pneumatic clamping claws (92) are respectively installed at four corners of the support frame (91), and the driving controller is respectively connected to the four pneumatic clamping claws (92) through a ball screw mechanism, and can at least drive the pneumatic clamping claws (92) to move along the length and width directions of the support frame (91); And / or, the clamping mechanism comprises a mounting shell (93) and a compression spring (94), the mounting shell (93) has a receiving cavity inside, the compression spring (94) is arranged in the receiving cavity, one end of the compression spring abuts against the inner wall of the mounting shell (93), and the other end is transmission-connected to the insertion claw rod through a lifting plate, the compression spring (94) can apply an elastic force toward the insertion claw rod through the lifting plate, and when the insertion resistance of the insertion claw rod is greater than the elastic force of the compression spring (94), the insertion claw rod can be partially retracted into the receiving cavity toward the lifting plate.

10. A detection method, using the detection device according to any one of claims 1 to 9, characterized in that: include: Determine whether the battery module (1) on the carrier (8) of the conveying mechanism (4) is skewed, and when the battery module (1) is skewed, issue an alarm and make manual adjustments; when the battery module (1) is not skewed, unlock the lifting mechanism and lift it, thereby unlocking the carrier (8); The clamping mechanism moves the battery module (1) to the first inspection station (51); the first image acquisition unit (21) obtains first image information of the first side of the battery module (1), and transmits the first image information to the MES system; the second image acquisition unit (22) obtains second image information of the second side of the battery module (1), and transmits the second image information to the MES system; the third image acquisition unit (23) obtains third image information of the bottom surface of the battery module (1), and transmits the third image information to the MES system; the fourth image acquisition unit (24) obtains fourth image information of the first end surface, and transmits the fourth image information to the MES system; the fifth image acquisition unit (25) obtains fifth image information of the second end surface of the battery module (1), and transmits the fifth image information to the MES system; The clamping mechanism moves the battery module (1) to a second inspection station (52), and the sixth image acquisition unit (26) obtains sixth image information of the top surface of the battery module (1), and transmits the sixth image information to the MES system; The clamping mechanism holds the battery module (1) and moves the battery module (1) onto a carrier (8) of the conveying mechanism (4).

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