Defect detection equipment

Abstract

The invention discloses defect detection equipment which is used for detecting a battery cell aluminum shell, the defect detection equipment comprises a detection platform, an inner cavity detection assembly and a transmission device, a plurality of detection stations are formed on the detection platform, and the plurality of detection stations comprise inner cavity detection stations; the inner cavity detection assembly is arranged corresponding to the inner cavity detection station so as to detect the inner cavity surface of the battery cell aluminum shell; and the transmission device is used for conveying the battery cell aluminum shells to the plurality of detection stations. The battery cell aluminum shell can be conveyed to each detection station through the conveying device so that the defects of the battery cell aluminum shell can be detected in detail, the inner cavity plane of the battery cell aluminum shell can be detected through the inner cavity detection assembly so that potential safety hazards caused by the defects of the inner cavity of the battery cell aluminum shell can be reduced, and the detection result is comprehensive and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of battery core aluminum shell detection, and in particular to a defect detection device. Background Art

[0002] The battery pack of new energy electric vehicles is composed of battery cells. The aluminum shell of the battery cell is usually stamped from aluminum. Various defects often occur during the molding process, including blackening of the surface, surface stains, surface oxidation water stains, surface scratches, surface convex points, surface concave points, stretch marks, edge wrinkles, etc. Defective battery cell aluminum shells will cause various problems in the produced battery cells, and defective battery cell aluminum shells should be screened and removed at the front end of battery cell production.

[0003] The existing method of screening battery cell aluminum shells usually uses a visual inspection device to inspect the appearance of the battery cell aluminum shell to ensure that it meets production requirements. However, the existing visual inspection device is not comprehensive enough for defect detection of battery cell aluminum shells, and there are still significant safety hazards in the battery cell aluminum shells. Summary of the invention

[0004] The main purpose of the present invention is to provide a defect detection device, which aims to improve the comprehensiveness of defect detection of battery core aluminum shells and reduce the safety hazards of battery core aluminum shells.

[0005] In a first aspect, the present application provides a defect detection device for detecting an aluminum shell of a battery cell, the defect detection device comprising:

[0006] A testing platform is formed with a plurality of testing stations, the plurality of testing stations including an inner cavity testing station;

[0007] An inner cavity detection component is arranged corresponding to the inner cavity detection station to detect the inner cavity surface of the battery core aluminum shell; and

[0008] The transmission device is used to transport the battery core aluminum shell to the plurality of inspection stations.

[0009] In the technical solution of the embodiment of the present application, the transmission device can transport the aluminum shell of the battery cell to each of the inspection stations so as to perform various inspections on the aluminum shell of the battery cell. The automation effect is good and the inspection efficiency is high. Among them, the inner cavity detection component can be used to detect defects such as pits, protrusions, scratches, etc. that may exist on the inner cavity surface of the aluminum shell of the battery cell. The inspection results are relatively comprehensive and can further reduce the safety hazards of the aluminum shell of the battery cell.

[0010] In some embodiments, the inner cavity detection component includes a first visual camera, which moves along a first direction to correspond to the opening of the battery core aluminum shell in a second direction, so as to have a first position away from a first inner cavity large surface of the battery core aluminum shell, and a second position away from a second inner cavity large surface of the battery core aluminum shell;

[0011] The field of view of the first visual camera is configured to cover a large surface of the first inner cavity when in a first position, and to cover a large surface of the second inner cavity when in a second position.

[0012] Among them, when the battery cell aluminum shell is conveyed to the inner cavity inspection station, the first visual camera can face the opening in the second direction of the battery cell aluminum shell, so that the defects on the inner cavity surface can be identified by high-precision photography. The battery cell aluminum shell generally has a relatively large first inner cavity surface and a second inner cavity surface, and the distance between the two is small. Since the field of view of the first visual camera is generally conical, when the first visual camera moves to the first position, since it is far away from the first inner cavity surface, the field of view of the first inner cavity surface obtained by it is larger, and the defect identification on the first inner cavity surface can also be clearer and more accurate. Similarly, when the first visual camera moves to the second position, the field of view of the second inner cavity surface obtained by it is larger, and the defect identification on the second inner cavity surface can also be clearer and more accurate. Through this multi-point photography and recognition method, the defects on the inner cavity surface can be identified more clearly and accurately, and the detection effect is more reliable.

[0013] In some embodiments, the first visual camera can also move along a second direction so as to be able to approach or move away from the battery cell aluminum shell.

[0014] Among them, since the first visual camera can move along the second direction, the distance between the first visual camera and the battery cell aluminum shell can be adjusted accordingly according to the different specifications of the battery cell aluminum shell, so as to adjust the first visual camera to a suitable position, so that the field of view of the photo is clearer, which is conducive to the subsequent defect identification and judgment.

[0015] In some embodiments, the defect detection device further includes an adjustment component, wherein the adjustment component includes:

[0016] an adjustment seat, movably disposed on the detection platform along a second direction; and

[0017] The mounting seat is movably disposed on the adjustment seat along a first direction, and the first visual camera is mounted on the mounting seat.

[0018] Among them, since the adjustment seat can move along the second direction, it can drive the mounting seat and the first visual camera to adjust the distance from the aluminum shell of the battery cell as a whole, and the mounting seat can move along the first direction, it can drive the first visual camera to switch between the first position and the second position, thereby realizing multi-point photo recognition.

[0019] In some embodiments, the adjustment assembly includes a first driving module, the first driving module is disposed on the detection platform, and the first driving module includes the adjustment seat; and / or,

[0020] The adjustment assembly includes a second driving module, the second driving module is arranged on the adjustment seat, and the second driving module includes the mounting seat.

[0021] Among them, through the driving action of the two linear driving modules, the first driving module and the second driving module, the position of the first visual camera in the first direction and the second direction can be accurately adjusted. The driving automation degree is high and the driving precision is high. The accuracy of the reciprocating switching of the first visual camera in the first position and the second position can be ensured, and the first visual camera can also be feedback-adjusted to a suitable position away from the aluminum shell of the battery cell.

[0022] In some embodiments, when the field of view of the first visual camera is at the first position and / or the second position, it can also cover the bottom surface of the inner cavity and / or two inner cavity side surfaces of the battery core aluminum shell.

[0023] Among them, since the field of view of the first visual camera can also cover the inner cavity bottom surface and the inner cavity side surface of the battery cell aluminum shell when it is in the first position and the second position, the first visual camera can take pictures and identify the entire inner cavity surface of the battery cell aluminum shell when switching between the first position and the second position, so as to ensure a more comprehensive detection of the inner cavity surface.

[0024] In some embodiments, the defect detection equipment further includes a first lighting component, which is arranged corresponding to the inner cavity detection station and is used to illuminate the inner cavity of the battery cell aluminum shell toward the opening.

[0025] Among them, due to the depth of the aluminum shell of the battery cell, there are many dark areas in its inner cavity, which are difficult to be identified by the first vision camera. The first lighting component can illuminate the inner cavity of the aluminum shell of the battery cell, thereby illuminating the darker areas in the inner cavity, so that the first vision camera can clearly take pictures and identify defects, thereby improving the accuracy and reliability of defect detection.

[0026] In some embodiments, the plurality of inspection stations further comprises an opening shape inspection station;

[0027] The defect detection device also includes a second visual camera, which is arranged corresponding to the opening shape detection station and is used to correspond to the opening in the second direction of the battery core aluminum shell to detect the shape of the opening.

[0028] Among them, when the transmission device transports the battery core aluminum shell to the opening shape detection station, the second visual camera can face the opening of the battery core aluminum shell in the second direction, so that the defect of opening deformation can be identified by high-precision photography.

[0029] In some embodiments, the second visual camera can also move along a second direction so as to be able to approach or move away from the battery cell aluminum shell.

[0030] Among them, since the second visual camera can move along the second direction, the distance between the second visual camera and the battery cell aluminum shell can be adjusted accordingly according to the different specifications of the battery cell aluminum shell, so as to adjust the second visual camera to a suitable position, so that the field of view of the photo is clearer, which is conducive to the subsequent defect identification and judgment.

[0031] In some embodiments, the defect detection device further includes a second lighting component, which is arranged corresponding to the opening shape detection station and is used to illuminate the bottom periphery of the battery cell aluminum shell.

[0032] Among them, by shining light toward the bottom of the battery cell aluminum shell through the second lighting component, a high-brightness background relative to the battery cell aluminum shell can be formed, so that the second visual camera can obtain a clearer outline after taking a picture of the opening of the battery cell aluminum shell, which is conducive to the defect judgment of the opening shape of the battery cell aluminum shell.

[0033] In some embodiments, the plurality of inspection stations further comprises an opening surface inspection station;

[0034] The defect detection equipment further includes a third visual camera, which is arranged corresponding to the opening surface detection station and is used to correspond to the opening of the battery core aluminum shell in the second direction to detect the opening surface.

[0035] Among them, when the transmission device transports the battery cell aluminum shell to the opening surface detection station, the third visual camera can face the opening in the second direction of the battery cell aluminum shell, so that burrs, scratches and other defects that may exist on the opening surface can be identified through high-precision photography.

[0036] In some embodiments, the third visual camera is movable along the second direction so as to be able to approach or move away from the aluminum shell of the battery cell.

[0037] Among them, since the third visual camera can move along the second direction, the distance between the third visual camera and the battery cell aluminum shell can be adjusted accordingly according to the different specifications of the battery cell aluminum shell, so as to adjust the third visual camera to a suitable position, so that the field of view of the photo is clearer, which is conducive to the subsequent defect identification and judgment.

[0038] In some embodiments, the defect detection equipment further includes a third lighting component, and the third lighting component is arranged corresponding to the opening surface detection station to illuminate the opening surface of the battery cell aluminum shell.

[0039] Among them, the third lighting component is used to illuminate the opening surface of the battery cell aluminum shell, so that the third visual camera can obtain clearer surface information after taking pictures of the opening surface, which is conducive to defect judgment of the opening surface of the battery cell aluminum shell.

[0040] In some embodiments, the lighting direction of the third lighting assembly is set at an angle to the second direction.

[0041] Among them, since the third lighting component is arranged directly opposite to the opening of the aluminum shell of the battery cell, by setting the lighting direction of the third lighting component at an angle to the second direction, the situation in which a large amount of lighting light is reflected to the third lighting component through the opening surface of the aluminum shell of the battery cell can be alleviated, that is, while ensuring that the opening surface is illuminated, it will not be recognized as too bright in the third lighting component.

[0042] In some embodiments, a picking station and a receiving station are further formed on the detection platform, wherein the transmission path of the transmission device passes through the picking station and the receiving station;

[0043] The defect detection equipment also includes an adjustment mechanism, which is used to transfer the battery core aluminum shell at the picking station to the material receiving station and reverse its side surface and / or flip its bottom surface.

[0044] Among them, the battery cell aluminum shell at the picking station can be transferred to the material receiving station through the adjustment mechanism. During the transfer process, the adjustment mechanism can reverse the side of the battery cell aluminum shell, so that the battery cell aluminum shell can successively turn the large surface and the side surface to the side of the transmission device on the transmission path of the transmission device, so that the corresponding detection component can successively detect the large surface and the side surface of the battery cell aluminum shell from the side of the transmission device. The adjustment mechanism can also flip the bottom surface of the battery cell aluminum shell, so that the battery cell aluminum shell can successively turn the bottom surface and the opening to the top of the transmission device on the transmission path of the transmission device, so that the corresponding detection component can successively detect the bottom surface and the inner cavity surface of the battery cell aluminum shell from the top of the transmission device. This reversing and flipping method can completely present the surface to be detected on the battery cell aluminum shell, and at the same time facilitates the installation of multiple detection components.

[0045] In some embodiments, a transition station is also formed on the detection platform;

[0046] The adjustment mechanism includes a flipping assembly and a rotating assembly. The flipping assembly is used to flip the bottom surface of the battery core aluminum shell at the picking station and place it at the transition station. The rotating assembly is used to reverse the side surface of the battery core aluminum shell at the transition station and place it at the second inspection station.

[0047] Among them, the battery cell aluminum shell can be flipped from the picking station to the transition station through the flipping component, and then the battery cell aluminum shell can be switched from the transition station to the second inspection station through the rotating component, thereby realizing the flipping and switching of the battery cell aluminum shell. This method of flipping and switching separately makes the structure of the flipping component simpler, and the production or purchase cost of the flipping component is lower.

[0048] In some embodiments, a plurality of fourth visual cameras are further provided on the inspection platform corresponding to the transition stations, and the plurality of fourth visual cameras are respectively used to inspect the shapes of a plurality of rounded corners of the aluminum shell of the battery cell.

[0049] Among them, since the aluminum shell of the battery cell needs to stay at the transition station during the process of being transferred from the picking station to the receiving station, multiple fourth vision cameras are arranged at the transition station to detect the shapes of multiple rounded corners of the aluminum shell of the battery cell, which makes full use of the production rhythm and makes the detection results of the defect detection device more comprehensive, which can better reflect the overall quality of the aluminum shell of the battery cell.

[0050] In some embodiments, the transmission device includes two transmission sections arranged in parallel, and the picking station and the material receiving station are respectively arranged corresponding to the two transmission sections.

[0051] Among them, since multiple inspection stations are respectively arranged corresponding to the transmission devices, by arranging the transmission device into two transmission sections and arranging them in parallel, the space occupied by the defect inspection device can be reduced and the arrangement of each inspection component can be reasonably optimized.

[0052] In some embodiments, the adjustment mechanism can at least reverse the side of the battery core aluminum shell;

[0053] The plurality of inspection stations include a large surface inspection station and a side surface inspection station, and the large surface inspection station and the side surface inspection station are respectively arranged corresponding to the two transmission sections.

[0054] Among them, the battery cell aluminum shell can be inspected for the large surface by the corresponding large surface inspection component when passing through the large surface inspection station, and can be inspected for the side by the corresponding side inspection component when passing through the side inspection station, which ensures the quality control of the large surface and side of the battery cell aluminum shell. Not only that, the large surface inspection station and the side inspection station correspond to different transmission section settings respectively, which makes it possible for the battery cell aluminum shell to successively turn the large surface and side toward the side of the transmission section respectively, so as to facilitate the reasonable arrangement of the corresponding large surface inspection component and the side inspection component on the inspection platform and the inspection of the battery cell aluminum shell.

[0055] In some embodiments, the adjustment mechanism can at least flip the bottom surface of the battery core aluminum shell;

[0056] The plurality of inspection stations further include a bottom surface inspection station, and the bottom surface inspection station and the inner cavity inspection station are respectively arranged corresponding to the two transmission sections.

[0057] Among them, the aluminum shell of the battery cell can be inspected for the bottom surface by the corresponding bottom surface inspection component when passing through the bottom surface inspection station, and can be inspected for the inner cavity surface by the corresponding inner cavity inspection component when passing through the inner cavity inspection station, which ensures the quality control of the bottom surface and the inner cavity surface of the aluminum shell of the battery cell. Not only that, the bottom surface inspection station and the inner cavity inspection station correspond to different transmission section settings respectively, which makes it possible for the aluminum shell of the battery cell to successively face the bottom surface and the inner cavity toward the top of the transmission section, so as to facilitate the reasonable arrangement of the corresponding bottom surface inspection component and the inner cavity inspection component on the inspection platform and the inspection of the aluminum shell of the battery cell.

[0058] In some embodiments, the plurality of detection stations further include an opening shape detection station and / or an opening surface detection station, and the opening shape detection station and / or the opening surface detection station and the inner cavity detection station are arranged corresponding to the same transmission section.

[0059] Among them, the opening shape of the battery cell aluminum shell can be detected by the corresponding opening shape detection component when passing through the opening shape detection station, and the opening surface can be detected by the corresponding opening surface detection component when passing through the opening surface detection station, which ensures the quality control of the opening shape and opening surface of the battery cell aluminum shell. Not only that, the opening shape detection station, the opening surface detection station and the inner cavity detection station correspond to the same transmission section, which makes it possible for the defect detection equipment to successively detect the opening shape, opening surface and inner cavity surface of the battery cell aluminum shell on one transmission section, thereby improving the detection efficiency.

[0060] In some embodiments, the detection platform is also formed with a material unloading station corresponding to the transmission device;

[0061] The defect detection equipment includes a sorting mechanism, a defective product conveyor line and / or a good product conveyor line. The sorting mechanism is arranged corresponding to the unloading station, and is used to sort the defective battery cell aluminum shells at the unloading station to the defective product conveyor line, and to sort the good battery cell aluminum shells at the unloading station to the good product conveyor line.

[0062] Among them, after the battery cell aluminum shell is inspected and transported to the unloading station, good products can be sorted by the sorting mechanism to the good product conveyor line, and defective products can be sorted by the sorting mechanism to the defective product conveyor line, thereby realizing the separate transmission of good products and defective products, preventing defective products from being mixed with good products, and ensuring the quality control of the products.

[0063] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0065] Figure 1 It is a schematic diagram of the structure of the aluminum shell of the battery cell;

[0066] Figure 2 A schematic structural diagram of an embodiment of a defect detection device provided by the present invention;

[0067] Figure 3 for Figure 2 A schematic diagram of the planar structure of a defect detection device;

[0068] Figure 4 for Figure 3 A schematic diagram of the structure of the inner cavity detection process;

[0069] Figure 5 for Figure 3 A schematic diagram of the structure of the opening shape detection station;

[0070] Figure 6 for Figure 3 Schematic diagram of the structure at the opening surface detection station.

[0071] Description of Figure Numbers:

[0072] Label name Label name 100 Defect detection equipment 31 Transmission segment 1 Testing platform 41 Second Vision Camera 11 Inner cavity inspection station 42 Third Vision Camera 12 Opening shape detection station 43 Fourth Vision Camera 13 Opening surface inspection station 51 Second lighting assembly 14 Large surface inspection station 52 Third lighting assembly 15 Side inspection station 6 Adjustment mechanism 16 Bottom surface inspection station 61 Flip Component 17 Picking station 62 Rotating components 18 Material receiving station 7 Sorting mechanism 19 Transition Station 8 Defective product conveyor line 9 2 Inner cavity detection components 9 Good product conveyor line 9 21 First Vision Camera 10 Feeding mechanism 22 Adjusting components 10a Large surface detection components 221 First drive module 10b Side detection components 222 Adjustment seat 10c Bottom detection component 223 Second drive module 200 Battery aluminum shell 224 Mounting Block 201 Large inner cavity 23 First lighting assembly 202 Opening surface 3 Transmission device

[0073] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0075] It should be noted that if a directional indication is involved in the embodiment of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0076] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0077] Looking back at the rapid development of the new energy vehicle industry over the past few years, power battery packs have always been a hot topic, and the quality of battery packs has always been an indicator that car companies pay close attention to. The production process of battery packs is complex and delicate, and they need to undergo strict quality inspection before leaving the factory to prevent defective products from flowing out and posing safety hazards.

[0078] Among them, the battery pack of new energy electric vehicles is composed of battery cells. The aluminum shell of the battery cell is usually stamped from aluminum. Various defects often occur during the molding process, including blackening of the surface, surface stains, surface oxidation water stains, surface scratches, surface convex points, surface concave points, stretch marks, edge wrinkles, etc. Defective battery cell aluminum shells will cause various problems in the produced battery cells, and defective battery cell aluminum shells should be screened and removed at the front end of battery cell production.

[0079] Please refer to the existing battery core aluminum shell structure Figure 1 The battery core aluminum shell has two opposite large faces, and the face opposite to the large face in the inner cavity is the inner cavity large face 201. At the same time, since the battery core aluminum shell has a certain thickness, an opening face 202 is formed at its opening. However, the existing visual inspection device usually only detects the defects of the battery core aluminum shell on the two large faces and two side faces of the battery core aluminum shell. This inspection method is too one-sided and does not inspect the inner cavity surface of the battery core aluminum shell. The inspection result is not comprehensive enough and has low reliability. The battery core aluminum shell that passes the inspection still has considerable safety hazards.

[0080] Based on the above considerations, in order to improve the comprehensiveness of defect detection of battery cell aluminum shells and reduce the safety hazards of battery cell aluminum shells, the present application proposes a defect detection equipment, which realizes the detection of the inner cavity surface of the battery cell aluminum shell by setting an inner cavity detection station on the detection platform and setting an inner cavity detection component corresponding to the inner cavity detection station, so as to reduce the safety hazards caused by the inner cavity defects of the battery cell aluminum shell, and the detection result is more comprehensive and reliable.

[0081] According to some embodiments of this application, please refer to Figure 1 , and refer to Figure 2 and Figure 3The embodiment of the present application provides a defect detection device 100 for detecting a battery cell aluminum shell 200. The defect detection device 100 includes a detection platform 1, an inner cavity detection component 2 and a transmission device 3. The detection platform 1 is formed with multiple detection stations, and the multiple detection stations include an inner cavity detection station 11; the inner cavity detection component 2 is arranged corresponding to the inner cavity detection station 11 to detect the inner cavity surface of the battery cell aluminum shell 200; the transmission device 3 is used to transport the battery cell aluminum shell 200 to multiple detection stations.

[0082] Among them, multiple inspection stations are also used to inspect at least one of the large surface, side surface and bottom surface of the power core aluminum shell 200. It can be understood that the more inspection stations there are, the more comprehensive the inspection of the battery core aluminum shell 200 is. The arrangement positions of multiple inspection stations can have various situations. For example, they can be arranged linearly or randomly according to actual floor space requirements, as long as it can be ensured that the transmission path of the transmission device 3 passes through each inspection station; the inner cavity inspection station 11 is a station for inspecting the inner cavity surface of the power core aluminum shell 200, and the inner cavity inspection component 2 is used to inspect the inner cavity inspection station 1 1 performs inner cavity surface detection on the battery core aluminum shell 200, and there may be multiple detection methods, for example, visual recognition detection and laser scanning detection, and its specific structure depends on the corresponding detection method, which is not limited in this embodiment. At the same time, the inner cavity detection component 2 can be specifically arranged on the detection platform 1, or on other structures, as long as it can correspond to the inner cavity detection station 11; the function of the transmission device 3 is to transport the battery core aluminum shell 200 to each detection station in turn, which may specifically include a belt transmission device 3, a roller transmission device 3 or a double-speed chain transmission device 3, which is not limited in this embodiment.

[0083] In the technical solution of the embodiment of the present application, the transmission device 3 can transport the battery cell aluminum shell 200 to various inspection stations so as to perform various inspections on the battery cell aluminum shell 200. The automation effect is good and the inspection efficiency is high. Among them, the inner cavity detection component 2 can be used to detect defects such as pits, protrusions, scratches, etc. that may exist on the inner cavity surface of the battery cell aluminum shell 200. The inspection results are relatively comprehensive and can further reduce the safety hazards of the battery cell aluminum shell 200.

[0084] According to some embodiments of the present application, optionally, refer to Figure 3 and Figure 4The inner cavity detection component 2 includes a first visual camera 21, which moves along a first direction to correspond to the opening setting of the battery core aluminum shell 200 in the second direction, so as to have a first position to be away from the first inner cavity large surface 201 of the battery core aluminum shell 200, and a second position to be away from the second inner cavity large surface 201 of the battery core aluminum shell 200; the field of view of the first visual camera 21 is set to cover the first inner cavity large surface 201 when it is in the first position, and to cover the second inner cavity large surface 201 when it is in the second position.

[0085] Among them, the opening of the battery core aluminum shell 200 is generally in the height direction. Therefore, for the battery core aluminum shell 200 transported to the inner cavity detection station 11, the second direction is the height direction. Since the first visual camera 21 is opposite to the opening of the battery core aluminum shell 200 in the height direction, when moving along the first direction, the first visual camera 21 can move backward away from the first inner cavity large surface 201 and the second inner cavity large surface 201. Since the first inner cavity large surface 201 and the second inner cavity large surface 201 are opposite along the width direction of the battery core aluminum shell 200, it can be understood that the first visual camera 21 moves along the width direction of the battery core aluminum shell 200. The first visual camera 21 moves in the width direction of the battery core aluminum shell 200, and the first direction is the width direction of the battery core aluminum shell 200. At the same time, the movement of the first visual camera 21 along the first direction can be achieved by manual adjustment or by automatic control adjustment, which is not limited in this embodiment; since the field of view of the first visual camera 21 is conical, therefore, under the premise of ensuring that the field of view can be covered, the first visual camera 21 can move as far as the position where the side walls where the two large surfaces begin to block each other. At this time, the first visual camera 21 has the largest field of view for the first inner cavity large surface 201 or the second inner cavity large surface 201.

[0086] When the battery cell aluminum shell 200 is conveyed to the inner cavity inspection station 11, the first visual camera 21 can face the opening of the battery cell aluminum shell 200 in the second direction, so that defects on its inner cavity surface can be identified by taking pictures. The battery cell aluminum shell 200 generally has a relatively large first inner cavity surface 201 and a second inner cavity surface 201, and the distance between the two is small. Since the field of view of the first visual camera 21 is generally conical, when the first visual camera 21 moves to the first position, since it is far away from the first inner cavity surface 201, the field of view of the first inner cavity surface 201 obtained by it is larger, and the defect identification on the first inner cavity surface 201 can also be clearer and more accurate. Similarly, when the first visual camera 21 moves to the second position, the field of view of the second inner cavity surface 201 obtained by it is larger, and the defect identification on the second inner cavity surface 201 can also be clearer and more accurate. This multi-point photography and recognition method can more clearly and accurately identify the defects on the inner cavity surface, and the detection effect is more reliable and the missed judgment rate is lower.

[0087] According to some embodiments of the present application, optionally, please continue to refer to Figure 4 The first visual camera 21 can also move along the second direction so as to be able to approach or move away from the battery core aluminum shell 200.

[0088] Among them, the heights of the aluminum shells 200 of battery cells of different specifications are different. Therefore, when the same first visual camera 21 is repeatedly used for identification and detection, the spacing between the first visual camera 21 and the aluminum shell 200 of the battery cell needs to be adjusted accordingly. The first visual camera 21 needs to be able to move not only along the second direction, but also along the first direction, and the activities along the two directions are not affected by each other. This can be achieved through adjustment by a robotic arm. The robotic arm can drive the first visual camera 21 to reach any position within a certain three-dimensional space. It can also be achieved through other adjustment methods, which are not limited in this embodiment.

[0089] Since the first visual camera 21 can move along the second direction, the distance between the first visual camera 21 and the battery cell aluminum shell 200 can be adjusted accordingly according to different specifications of the battery cell aluminum shell 200, so as to adjust the first visual camera 21 to a suitable position, so that the field of view of the photo is clearer, which is conducive to subsequent defect identification and judgment.

[0090] According to some embodiments of the present application, optionally, please continue to refer to Figure 4 The defect detection equipment 100 also includes an adjustment component 22, which includes an adjustment seat 222 and a mounting seat 224. The adjustment seat 222 is movably arranged on the detection platform 1 along the second direction; the mounting seat 224 is movably arranged on the adjustment seat 222 along the first direction, and the first visual camera 21 is installed on the mounting seat 224.

[0091] Among them, the movement of the adjustment seat 222 along the second direction and the movement of the mounting seat 224 along the first direction are both linear movements, and can be driven by a cylinder or other linear drive structures, which is not limited in this embodiment.

[0092] Since the adjustment seat 222 can move along the second direction, it can drive the mounting seat 224 and the first visual camera 21 to adjust the distance from the battery core aluminum shell 200 as a whole, and the mounting seat 224 can move along the first direction, it can drive the first visual camera 21 to switch between the first position and the second position, so that the movement of the first visual camera 21 along the first direction and the movement along the second direction are not affected by each other, and while achieving spacing adjustment, multi-point photo recognition can also be achieved.

[0093] According to some embodiments of the present application, optionally, please continue to refer to Figure 4The adjustment component 22 includes a first drive module 221, which is disposed on the detection platform 1 and includes an adjustment seat 222; and / or the adjustment component 22 includes a second drive module 223, which is disposed on the adjustment seat 222 and includes a mounting seat 224.

[0094] Among them, in automatic control, the driving module usually includes a fixed part and a movable part. For the first driving module 221, the movable part includes an adjustment seat 222, and for the second driving module 223, the movable part includes a mounting seat 224. The movable part can be movably set on the fixed part under the drive of a ball screw or a synchronous belt. For the first driving module 221, its fixed part can be directly set on the detection platform 1, and can also be indirectly installed on the detection platform 1 through a transfer structure. This embodiment does not limit this.

[0095] Through the driving action of the two linear driving modules, the first driving module 221 and the second driving module 223, the position of the first visual camera 21 in the first direction and the second direction can be accurately adjusted. The driving automation degree is high and the driving precision is high. The accuracy of the reciprocating switching of the first visual camera 21 between the first position and the second position can be ensured, and the first visual camera 21 can also be feedback-adjusted to a suitable position away from the battery core aluminum shell 200.

[0096] According to some embodiments of the present application, optionally, when the field of view of the first visual camera 21 is in the first position and / or the second position, it can also cover the inner cavity bottom surface and / or two inner cavity side surfaces of the battery core aluminum shell 200 .

[0097] Among them, for ease of understanding, in this embodiment, the side walls of the battery cell aluminum shell 200 where the first inner cavity large surface 201 and the second inner cavity large surface 201 are located are defined as the first side wall and the second side wall. When the first visual camera 21 takes a picture of the first inner cavity large surface 201, in order to obtain the largest possible field of view, it means that the first visual camera 21 needs to move across the second side wall in a direction away from the first inner cavity large surface 201. At this time, the second side wall will block at least part of the inner cavity bottom surface and the inner cavity side surface, and vice versa. Therefore, in this embodiment, the first visual camera 21 does not cross the first side wall and the second side wall when moving between the first position and the second position.

[0098] Since the field of view of the first visual camera 21 does not pass over the second side wall and the first side wall when it is in the first position and the second position, therefore, under the condition of sacrificing the field of view of the first inner cavity large surface 201 and the second inner cavity large surface 201, the morphology of the inner cavity bottom surface and the two inner cavity side surfaces can be simultaneously acquired through one photograph, and the inner cavity bottom surface and the inner cavity side surfaces of the battery cell aluminum shell 200 can also be covered, so that the first visual camera 21 can identify all the morphologies of the inner cavity surface of the battery cell aluminum shell 200 by taking one photograph respectively in the first position and the second position, thereby ensuring a more comprehensive detection of the inner cavity surface.

[0099] According to some embodiments of the present application, optionally, please continue to refer to Figure 4 The defect detection device 100 further includes a first lighting component 23, which is arranged corresponding to the inner cavity detection station 11 and is used to illuminate the inner cavity of the battery core aluminum shell 200 toward the opening.

[0100] Among them, the function of the first lighting component 23 is to illuminate the inner cavity of the battery cell aluminum shell 200, so it at least includes an illumination part for emitting light. The setting position of the first lighting component 23 can have many situations, but at least it needs to be set away from the first visual camera 21. For example, the first lighting component 23 can include two first lighting lamps, and the two first lighting lamps respectively cross-illuminate the inner cavity of the battery cell aluminum shell 200 from the length direction of the battery cell aluminum shell 200. In this way, the dark area in the inner cavity can be eliminated without affecting the shooting field of view of the first visual camera 21.

[0101] Since the battery cell aluminum shell 200 is deep, there are many dark areas in its inner cavity, which are difficult to be identified by the first visual camera 21. The first lighting component 23 can illuminate the inner cavity of the battery cell aluminum shell 200, thereby illuminating the darker areas in the inner cavity, so that the first visual camera 21 can clearly take pictures and identify defects, thereby improving the accuracy and reliability of defect detection.

[0102] According to some embodiments of the present application, optionally, refer to Figure 3 and Figure 5 , the multiple inspection stations also include an opening shape inspection station 12; the defect inspection device 100 also includes a second visual camera 41, and the second visual camera 41 is set corresponding to the opening shape inspection station 12, to correspond to the opening in the second direction of the battery core aluminum shell 200 to detect the shape of the opening.

[0103] Among them, the opening of the battery core aluminum shell 200 is generally rectangular, and the side wall where the large surface is located is relatively long, so it is easy to deform. The opening shape detection station 12 is a station for shape detection of the opening of the battery core aluminum shell 200. The second visual camera 41 identifies the shape contour of the opening by high-precision photography and compares it with the standard contour. The battery core aluminum shell 200 with a shape contour within the error range is judged as a good product, otherwise it is judged as a defective product.

[0104] When the transmission device 3 transports the battery cell aluminum shell 200 to the opening shape detection station 12, the second visual camera 41 can face the opening of the battery cell aluminum shell 200 in the second direction, so that the defect of opening deformation can be identified by high-precision photography, further improving the comprehensiveness of the defect detection device.

[0105] According to some embodiments of the present application, optionally, please continue to refer to Figure 5 The second visual camera 41 can also move along the second direction so as to be able to approach or move away from the battery core aluminum shell 200.

[0106] Among them, the heights of the aluminum shells 200 of battery cells of different specifications are different. Therefore, when the same second visual camera 41 is repeatedly used for identification and detection, it is necessary to adjust the distance between the second visual camera 41 and the aluminum shell 200 of the battery cell accordingly. This can be achieved by manual adjustment through a telescopic rod, by adjustment through a cylinder, or by other means, which is not limited to the present embodiment.

[0107] Since the second visual camera 41 can move along the second direction, the distance between the second visual camera 41 and the battery cell aluminum shell 200 can be adjusted accordingly according to different specifications of the battery cell aluminum shell 200, so as to adjust the second visual camera 41 to a suitable position, so that the field of view of the photo is clearer, which is conducive to subsequent defect identification and judgment.

[0108] According to some embodiments of the present application, optionally, please continue to refer to Figure 5 The defect detection device 100 further includes a second lighting component 51 , which is arranged corresponding to the opening shape detection station 12 to illuminate the bottom of the battery core aluminum shell 200 .

[0109] Among them, the function of the second lighting component 51 is to illuminate the bottom of the battery cell aluminum shell 200, so it at least includes an illumination part for emitting light, and its setting position can be on the side of the battery cell aluminum shell 200, or in the height direction of the battery cell aluminum shell 200, and its lighting direction can be set vertically to the transmission device 3, or it can be set at an angle, as long as a highlight area can be formed around the battery cell aluminum shell 200.

[0110] By shining light toward the bottom of the battery cell aluminum shell 200 through the second lighting component 51, a high-brightness background relative to the battery cell aluminum shell 200 can be formed, so that the second visual camera 41 can obtain a clearer outline after taking a picture of the opening of the battery cell aluminum shell 200, which is beneficial to the defect judgment of the opening shape of the battery cell aluminum shell 200.

[0111] According to some embodiments of the present application, optionally, please continue to refer to Figure 3 and Figure 6 , the multiple inspection stations also include an opening surface inspection station 13; the defect inspection device 100 also includes a third visual camera 42, and the third visual camera 42 is arranged corresponding to the opening surface inspection station 13, to correspond to the opening in the second direction of the battery core aluminum shell 200 to detect the opening surface.

[0112] The opening surface detection station 13 is a station for detecting the opening surface of the power core aluminum shell 200, and the third visual camera 42 identifies the opening surface by taking high-precision photos.

[0113] When the transmission device 3 transports the battery cell aluminum shell 200 to the opening surface detection station 13, the third visual camera 42 can face the opening in the second direction of the battery cell aluminum shell 200, so that burrs, scratches and other defects that may exist on the opening surface can be identified through high-precision photography, further improving the comprehensiveness of the defect detection device.

[0114] According to some embodiments of the present application, optionally, please continue to refer to Figure 6 The third visual camera 42 is movable along the second direction so as to be able to approach or move away from the battery core aluminum shell 200 .

[0115] Among them, the heights of the aluminum shells 200 of battery cells of different specifications are different. Therefore, when the same third visual camera 42 is repeatedly used for identification and detection, it is necessary to adjust the distance between the third visual camera 42 and the aluminum shell 200 of the battery cell accordingly. This can be achieved by manual adjustment through a telescopic rod, by adjustment through a cylinder, or by other means, which is not limited in this embodiment.

[0116] Since the third visual camera 42 can move along the second direction, the distance between the third visual camera 42 and the battery cell aluminum shell 200 can be adjusted accordingly according to different specifications of the battery cell aluminum shell 200, so as to adjust the third visual camera 42 to a suitable position, so that the field of view of the photo is clearer, which is conducive to subsequent defect identification and judgment.

[0117] According to some embodiments of the present application, optionally, please continue to refer to FIG. Figure 6 The defect detection device 100 further includes a third lighting component 52 , which is disposed corresponding to the opening surface detection station 13 and is used to illuminate the opening surface of the battery core aluminum shell 200 .

[0118] Among them, the function of the third lighting component 52 is to illuminate the opening surface of the battery cell aluminum shell 200, so it at least includes an illumination part for emitting light, and its setting position can be on the side of the battery cell aluminum shell 200, or in the height direction of the battery cell aluminum shell 200, and its lighting direction can be set vertically to the transmission device 3, or it can be set at an angle, as long as the opening surface of the battery cell aluminum shell 200 can be illuminated.

[0119] By lighting the opening surface of the battery core aluminum shell 200 with the third lighting assembly 52 , the third visual camera 42 can obtain clearer surface information after taking a picture of the opening surface, which is beneficial for defect determination of the opening surface of the battery core aluminum shell 200 .

[0120] According to some embodiments of the present application, optionally, the lighting direction of the third lighting assembly 52 is set at an angle to the second direction.

[0121] The lighting direction being set at an angle to the second direction means that the third lighting assembly 52 does not illuminate perpendicularly to the opening surface, but illuminates obliquely toward the opening surface, and only a portion of the diffuse light enters the third visual camera 42 .

[0122] By setting the lighting direction of the third lighting component 52 at an angle to the second direction, the situation in which a large amount of lighting light is reflected to the third lighting component 52 through the opening surface of the battery cell aluminum shell 200 can be alleviated. That is, while ensuring that the opening surface is illuminated, it will not be identified as too bright in the third lighting component 52 and affect the third visual camera 42 from identifying defects.

[0123] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3 A picking station 17 and a receiving station 18 are also formed on the inspection platform 1, wherein the transmission path of the transmission device 3 passes through the picking station 17 and the receiving station 18; the defect detection equipment 100 also includes an adjustment mechanism 6, which is used to transfer the battery core aluminum shell 200 at the picking station 17 to the receiving station 18, and reverse its side and / or flip its bottom.

[0124] Among them, the picking station 17 and the receiving station 18 can belong to the same station, that is, the adjustment mechanism 6 picks up the battery cell aluminum shell 200 in situ, and puts it back to its original place after adjusting the side orientation and bottom orientation of the battery cell aluminum shell 200. Of course, the picking station 17 and the receiving station 18 can also belong to two different stations, which can be determined according to the detection rhythm and the movement rhythm of the transmission device 3. For example, if the detection rhythm is slow and the movement of the adjustment mechanism 6 is fast, the picking, adjustment and placement of the battery cell aluminum shell 200 can be completed in the waiting interval of the transmission device 3. If the detection rhythm is fast and the movement of the adjustment mechanism 6 is slow, the battery cell aluminum shell 200 can be taken out of the place; the adjustment mechanism 6 for the side reversing adjustment of the battery cell aluminum shell 200 means that the adjustment mechanism 6 can pick up the battery cell The aluminum shell 200 is rotated 90 degrees along the axis of the height direction of the battery core aluminum shell 200, so that the battery core aluminum shell 200, which originally had a large surface or a side facing the side of the transmission device 3, is adjusted to face the side or large surface towards the side of the transmission device 3; the adjustment mechanism 6 for the bottom surface flipping of the battery core aluminum shell 200 means that the adjustment mechanism 6 can pick up the battery core aluminum shell 200 and rotate it 180 degrees along the axis of the length direction of the battery core aluminum shell 200, so that the opening and the bottom surface of the battery core aluminum shell 200 are flipped and changed direction; the structural type of the adjustment mechanism 6 can have various forms. For example, in some examples, the adjustment mechanism 6 includes a multi-degree-of-freedom robotic arm, and the rotation and position transfer of the battery core aluminum shell 200 along any axis can be realized through the grasping of the multi-degree-of-freedom robotic arm, which is not limited in this embodiment.

[0125] The battery cell aluminum shell 200 at the picking station 17 can be transferred to the receiving station 18 through the adjustment mechanism 6. During the transfer process, the adjustment mechanism 6 can reverse the side of the battery cell aluminum shell 200, so that the battery cell aluminum shell 200 can successively turn the large surface and the side surface toward the side of the transmission device 3 on the transmission path of the transmission device 3, so that the corresponding detection component can successively detect the large surface and the side surface of the battery cell aluminum shell 200 from the side of the transmission device 3. The adjustment mechanism 6 can also flip the bottom surface of the battery cell aluminum shell 200, so that the battery cell aluminum shell 200 can successively turn the bottom surface and the opening toward the top of the transmission device 3 on the transmission path of the transmission device 3, so that the corresponding detection component can successively detect the bottom surface and the inner cavity surface of the battery cell aluminum shell 200 from the top of the transmission device 3. This reversing and flipping method can fully present the surface to be detected on the battery cell aluminum shell 200, and at the same time facilitate the installation of multiple detection components.

[0126] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3A transition station 19 is also formed on the inspection platform 1; the adjustment mechanism 6 includes a flip assembly 61 and a rotating assembly 62, the flip assembly 61 is used to flip the bottom surface of the battery core aluminum shell 200 at the picking station 17 and place it in the transition station 19, and the rotating assembly 62 is used to reverse the side of the battery core aluminum shell 200 at the transition station 19 and place it in the second inspection station.

[0127] Among them, since the adjustment mechanism 6 includes a flipping component 61 and a rotating component 62, which are used to respectively realize the flipping and reversing of the battery core aluminum shell 200, the transition station 19 is used to provide the transitional placement of the battery core aluminum shell 200 between the two posture changes of flipping and reversing, and serves as the action connection position of the flipping component 61 and the rotating component 62; the structural type of the flipping component 61 has various forms, as long as it can realize the grasping, flipping and transportation of the battery core aluminum shell 200. For example, in some examples, the flipping component 61 includes a flipping clamp, which is swung by the axis in the first direction and is set on the detection platform 1. During its rotation stroke, the chuck of the flipping clamp can reach the picking station 17 and the transition station 19, which can realize the flipping of the battery core aluminum shell 200 and the transportation of the battery core aluminum shell 200. When in the picking station 17, the chuck can be retracted and clamped The battery cell aluminum shell 200 can be placed loosely by the chuck when it is in the transition roller station. The rotating assembly 62 can have various structural types as long as it can realize the grasping, rotation and transportation of the battery cell aluminum shell 200. For example, in some examples, the rotating assembly 62 includes a rotating jaw and a two-axis drive module. The two-axis drive module is arranged on the detection platform 1. The rotating jaw is rotated by the axis in the second direction and is arranged on the two-axis drive module. On the driving stroke of the two-axis drive module, the rotating jaw can first reach the transition station 19 and pick up the battery cell aluminum shell 200, and then move to the material receiving station 18 and place the battery cell aluminum shell 200. In the process of moving from the transition station 19 to the material receiving station 18, the rotating jaw can rotate 90 degrees. Of course, the flipping assembly 61 and the rotating assembly 62 can also adopt other structural forms, which are not limited to this embodiment.

[0128] The battery cell aluminum shell 200 can be flipped from the picking station 17 to the transition station 19 through the flipping component 61, and then the battery cell aluminum shell 200 can be switched from the transition station 19 to the second inspection station through the rotating component 62, thereby realizing the flipping and switching of the battery cell aluminum shell 200. This method of performing flipping and switching separately makes the structure of the flipping component 61 relatively simple, the control method is also relatively simple, and the production or purchase cost of the adjustment mechanism 6 is relatively low.

[0129] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3A plurality of fourth visual cameras 43 are also provided on the inspection platform 1 corresponding to the transition station 19 , and the plurality of fourth visual cameras 43 are respectively used to inspect the shapes of the plurality of fillets of the battery core aluminum shell 200 .

[0130] Among them, since the battery cell aluminum shell 200 generally has four rounded corners, it can be understood that multiple fourth visual cameras 43 mean that the number of fourth visual cameras 43 can at least cover the four rounded corners of the battery cell aluminum shell 200. Depending on the placement position and the camera specifications, two, three, four or even more fourth visual cameras 43 can be set. It can be understood that considering the equipment production cost and purchase cost, as well as the detection reliability, in some examples, four fourth visual cameras 43 are set, and they are respectively used to correspond to the four rounded corners of the battery cell aluminum shell 200, that is, after the battery cell aluminum shell 200 is placed in the transition station 19, each fourth visual camera 43 can correspond to a rounded corner respectively.

[0131] Since the battery cell aluminum shell 200 needs to stay at the transition station 19 during the process of being transferred from the picking station 17 to the receiving station 18, multiple fourth visual cameras 43 are arranged at the transition station 19 to detect the shapes of multiple rounded corners of the battery cell aluminum shell 200, which makes full use of the pause time of the equipment production rhythm, so that the detection results of the defect detection device are more comprehensive and can better reflect the overall quality of the battery cell aluminum shell 200.

[0132] According to some embodiments of the present application, optionally, please continue to refer to Figure 3 The transmission device 3 includes two transmission sections 31 arranged in parallel, and the picking station 17 and the material receiving station 18 are respectively arranged corresponding to the two transmission sections 31.

[0133] Among them, the transmission path of the transmission device 3 can be continuous or intermittent. Therefore, the two parallel transmission sections 31 can be disconnected or connected end to end. Since the function of the adjustment device is to transfer the battery cell aluminum shell 200 at the picking station 17 to the material receiving station 18, the picking station 17 should be downstream of the transmission direction of the corresponding transmission section 31, and the material receiving station 18 should be upstream of the transmission direction of the corresponding transmission section 31.

[0134] Since a plurality of inspection stations are respectively arranged corresponding to the transmission device 3, by arranging the transmission device 3 into two transmission sections 31 and arranging them in parallel, the space occupied by the defect inspection device can be reduced and the arrangement of each inspection component can be reasonably optimized.

[0135] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3The adjustment mechanism 6 can at least reverse the side of the battery core aluminum shell 200; the multiple inspection stations include a large surface inspection station 14 and a side inspection station 15, and the large surface inspection station 14 and the side inspection station 15 are respectively set corresponding to the two transmission sections 31.

[0136] Among them, in this embodiment, there is no limitation on the specific setting positions of the large surface inspection station 14 and the side inspection station 15, as long as they can be located in different transmission sections 31. The purpose is to adjust the side reversing effect of the device so that the large surface and side of the battery cell aluminum shell 200 are respectively facing the side of the transmission section 31 at the large surface inspection station 14 and the side inspection station 15.

[0137] The battery cell aluminum shell 200 can be inspected for the large surface by the corresponding large surface inspection component 10a when passing through the large surface inspection station 14, and can be inspected for the side by the corresponding side inspection component 10b when passing through the side inspection station 15, which ensures the quality control of the large surface and the side of the battery cell aluminum shell 200. Moreover, the large surface inspection station 14 and the side inspection station 15 correspond to different transmission sections 31 respectively, which enables the battery cell aluminum shell 200 to successively turn the large surface and the side toward the side of the transmission section 31, so as to facilitate the corresponding large surface inspection component 10a and the side inspection component 10b to directly identify and inspect from the side, and the large surface inspection component 10a and the side inspection component 10b can be reasonably placed still on the inspection platform 1, and the battery cell aluminum shell 200 can be conveniently and quickly inspected.

[0138] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3 The adjustment mechanism 6 can at least flip the bottom surface of the battery core aluminum shell 200; the multiple inspection stations also include a bottom surface inspection station 16, and the bottom surface inspection station 16 and the inner cavity inspection station 11 are respectively set corresponding to the two transmission sections 31.

[0139] Among them, in this embodiment, there is no limitation on the specific setting positions of the bottom surface detection station 16 and the inner cavity detection station 11, as long as they can be located in different transmission sections 31. The purpose is to adjust the bottom surface of the battery cell aluminum shell 200 through the adjustment mechanism 6, so that the battery cell aluminum shell 200 at the bottom surface detection station 16 and the inner cavity detection station 11 respectively faces the bottom surface and the opening surface to the same side of the second direction of the transmission section 31. For example, when the second direction is the direction of gravity, the bottom surface and the opening surface are both facing the top of the transmission device 3.

[0140] When the battery cell aluminum shell 200 passes through the bottom surface inspection station 16, the bottom surface can be inspected by the corresponding bottom surface inspection component 10c, and when it passes through the inner cavity inspection station 11, the inner cavity surface can be inspected by the corresponding inner cavity inspection component 2, which ensures the quality control of the bottom surface and the inner cavity surface of the battery cell aluminum shell 200. Moreover, the bottom surface inspection station 16 and the inner cavity inspection station 11 are respectively arranged in correspondence with different transmission sections 31, which enables the battery cell aluminum shell 200 to successively face the bottom surface and the inner cavity toward the top of the transmission section 31, so as to facilitate the corresponding bottom surface inspection component 10c and the inner cavity inspection component 2 to be reasonably arranged on the inspection platform 1 and to inspect the battery cell aluminum shell 200.

[0141] It is worth mentioning that since the outside of the battery cell aluminum shell 200 generally has six surfaces, namely two large surfaces, two side surfaces, a bottom surface, and an opening surface, the bottom surface or the opening surface is usually placed on the transmission device 3 as a supporting surface during the transmission process. This ensures that the shape and defects of the opening surface are not affected by its own gravity and change (if the large surface contacts the transmission device 3, the shape of the large surface will be changed under pressure, and the shape of the opening surface will also change), and the detection component will be more accurate in detecting its defects.

[0142] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3 The multiple inspection stations also include an opening shape inspection station 12 and / or an opening surface inspection station 13 . The opening shape inspection station 12 and / or the opening surface inspection station 13 and the inner cavity inspection station 11 are arranged corresponding to the same transmission section 31 .

[0143] Among them, in the two transmission sections 31, including the front transmission section 31 located upstream in the transmission direction and the rear transmission section 31 located downstream, the opening shape detection station 12, the opening surface detection station 13 and the inner cavity detection station 11 are simultaneously in the front transmission section 31 or the rear transmission section 31.

[0144] When the battery cell aluminum shell 200 passes through the opening shape detection station 12, the opening shape can be detected by the corresponding opening shape detection component, and when it passes through the opening surface detection station 13, the opening surface can be detected by the corresponding opening surface detection component, which ensures the quality control of the opening shape and opening surface of the battery cell aluminum shell 200. Moreover, the opening shape detection station 12, the opening surface detection station 13 and the inner cavity detection station 11 are arranged corresponding to the same transmission section 31, which makes it possible for the defect detection equipment 100 to detect the opening shape, opening surface and inner cavity surface of the battery cell aluminum shell 200 in turn on one transmission section 31, and the detection efficiency is higher.

[0145] According to some embodiments of the present application, optionally, please continue to refer to Figure 2 and Figure 3A material unloading station corresponding to the transmission device 3 is also formed on the inspection platform 1; the defect detection equipment 100 includes a sorting mechanism 7, a defective product conveying line 8 and / or a good product conveying line 9, and the sorting mechanism 7 is arranged corresponding to the material unloading station to sort the defective battery cell aluminum shell 200 at the material unloading station to the defective product conveying line 8, and to sort the good battery cell aluminum shell 200 at the material unloading station to the good product conveying line 9.

[0146] Among them, the setting position of the sorting mechanism 7 can be on the detection platform 1, or on other external structures, as long as it can correspond to the unloading station. At the same time, the structure of the sorting mechanism 7 can have various forms. For example, two groups of clamping mechanisms can be set to respectively convey good products and defective products on the conveying line 8, so as to respectively clamp the good battery cell aluminum shell 200 from the unloading station to the good product conveying line 9, and clamp the defective battery cell aluminum shell 200 from the unloading station to the defective product conveying line 8. A mechanical arm structure can also be used to sort the good battery cell aluminum shell 200 and the defective battery cell aluminum shell 200 to the good product conveying line 9 and the defective product conveying line 8, respectively. This embodiment does not limit it.

[0147] After the battery cell aluminum shell 200 is inspected and transported to the unloading station, good products can be sorted by the sorting mechanism 7 to the good product conveying line 9, and defective products can be sorted by the sorting mechanism 7 to the defective product conveying line 8, thereby realizing the separate transmission of inspected good products and defective products, preventing defective products from being mixed with good products, and ensuring the quality control of the products.

[0148] In some specific embodiments, please continue to refer to Figure 2 and Figure 3 The defect detection equipment 100 includes a detection platform 1, a transmission device 3 and an adjustment mechanism 6; the detection platform 1 is formed with a plurality of detection stations, and the plurality of detection stations include an inner cavity detection station 11, an opening shape detection station 12, an opening surface detection station 13, a large surface detection station 14, a side detection station 15, a bottom surface detection station 16, a picking station 17, a material receiving station 18 and a transition station 19; the transmission device 3 includes two transmission sections 31 arranged in parallel, the picking station 17 and the material receiving station 18 are respectively arranged corresponding to the two transmission sections 31, and the bottom surface detection station 16 Two transmission sections 31 are respectively arranged corresponding to the inner cavity inspection station 11, the opening shape inspection station 12, the opening surface inspection station 13 and the inner cavity inspection station 11 are in the same transmission section 31, and the large surface inspection station 14 and the side inspection station 15 are located in two transmission sections 31; the adjustment mechanism 6 includes a flipping component 61 and a rotating component 62, the flipping component 61 is used to flip the bottom surface of the battery core aluminum shell 200 at the picking station 17 and place it in the transition station 19, and the rotating component 62 is used to reverse the side of the battery core aluminum shell 200 at the transition station 19 and place it in the second inspection station.

[0149] Among them, the bottom surface inspection station 16 and the inner cavity inspection station 11 are respectively arranged in two corresponding transmission sections 31, and the large surface inspection station 14 and the side inspection station 15 are located in two transmission sections 31. It can be understood that the bottom surface inspection station 16 and the large surface inspection station 14 can be located in the same transmission section 31, or the bottom surface inspection station 16 and the inner cavity inspection station 11 can be located in the same transmission section 31, and this embodiment does not limit this.

[0150] By arranging the transmission device 3 in two sections in parallel, the space occupied by the defect detection device can be reduced, and the arrangement of each detection station can be reasonably optimized. By adjusting the rotation line and posture of the adjustment mechanism 6, the battery core aluminum shell 200 can face different directions on the two transmission sections 31, so that the surface to be inspected is exposed, which is conducive to detection. The bottom surface and the inner cavity surface, as well as the large surface and the side surface are relative surfaces. It is reasonable and efficient to arrange the bottom surface inspection station 16 and the inner cavity inspection station 11, as well as the large surface inspection station 14 and the side surface inspection station 15 respectively corresponding to the two transmission sections 31.

[0151] In some specific embodiments, please continue to refer to Figure 2 and Figure 3 A loading station is also formed on the inspection platform 1; the defect detection equipment 100 also includes a loading mechanism 10 arranged corresponding to the loading station, and the loading mechanism 10 is used to transfer the battery core aluminum shell 200 at the loading station to the transmission device 3.

[0152] Among them, there can be many structural types of the feeding mechanism 10, for example, a clamping transfer mechanism can be used for clamping and feeding, or a suction cup transfer mechanism can be used for sucking and feeding. Of course, the two can also be combined, and a positioning device is set between the two. The suction cup transfer device is used to clamp the battery cell aluminum shell 200 from the feeding station to the positioning device for precise positioning, and then the clamping transfer mechanism clamps the battery cell aluminum shell 200 on the positioning device to the transmission device 3. Among them, there are many specific structures of the clamping transfer mechanism and the suction cup transfer mechanism, which are not limited in this embodiment.

[0153] The battery cell aluminum shell 200 can be provided to the loading station manually or mechanically, and then the battery cell aluminum shell 200 is transferred to the transmission device 3 by the loading mechanism 10, so that the loading automation can be realized, the labor intensity of the personnel is reduced, and the loading efficiency is improved.

[0154] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A defect detection device for detecting aluminum shells of battery cells, characterized in that: The defect detection equipment comprises: A testing platform is formed with a plurality of testing stations, the plurality of testing stations including an inner cavity testing station; An inner cavity detection component is arranged corresponding to the inner cavity detection station to detect the inner cavity surface of the battery core aluminum shell; and The transmission device is used to transport the battery core aluminum shell to the plurality of inspection stations.

2. The defect detection device according to claim 1, characterized in that: The inner cavity detection component includes a first visual camera, which moves along a first direction to correspond to the opening of the battery core aluminum shell in a second direction, so as to have a first position away from a first inner cavity large surface of the battery core aluminum shell, and a second position away from a second inner cavity large surface of the battery core aluminum shell; The field of view of the first visual camera is configured to cover a large surface of the first inner cavity when in a first position, and to cover a large surface of the second inner cavity when in a second position.

3. The defect detection device according to claim 2, characterized in that: The first visual camera can also move along a second direction so as to be able to approach or move away from the battery core aluminum shell.

4. The defect detection device according to claim 3, characterized in that: The inner cavity detection component also includes an adjustment component, and the adjustment component includes: an adjustment seat, movably disposed on the detection platform along a second direction; and The mounting seat is movably disposed on the adjustment seat along a first direction, and the first visual camera is mounted on the mounting seat.

5. The defect detection device according to claim 4, characterized in that: The adjustment assembly includes a first driving module, the first driving module is arranged on the detection platform, and the first driving module includes the adjustment seat; and / or, The adjustment assembly includes a second driving module, the second driving module is arranged on the adjustment seat, and the second driving module includes the mounting seat.

6. The defect detection device according to any one of claims 2 to 5, characterized in that: When the field of view of the first visual camera is at the first position and / or the second position, it can also cover the inner cavity bottom surface and / or two inner cavity side surfaces of the battery core aluminum shell.

7. The defect detection device according to any one of claims 2 to 5, characterized in that: The defect detection equipment also includes a first lighting component, which is arranged corresponding to the inner cavity detection station and is used to illuminate the inner cavity of the aluminum shell of the battery cell toward the opening.

8. The defect detection device according to any one of claims 1 to 5, characterized in that: The plurality of said inspection stations also include an opening shape inspection station; The defect detection device also includes a second visual camera, which is arranged corresponding to the opening shape detection station and is used to correspond to the opening in the second direction of the battery core aluminum shell to detect the shape of the opening.

9. The defect detection device according to claim 8, characterized in that: The second visual camera can also move along a second direction so as to be able to approach or move away from the aluminum shell of the battery cell.

10. The defect detection device according to claim 8, characterized in that: The defect detection equipment also includes a second lighting component, which is arranged corresponding to the opening shape detection station and is used to illuminate the bottom and surrounding of the battery core aluminum shell.

11. The defect detection device according to any one of claims 1 to 5, characterized in that: The plurality of said inspection stations also include an opening surface inspection station; The defect detection equipment further includes a third visual camera, which is arranged corresponding to the opening surface detection station and is used to correspond to the opening of the battery core aluminum shell in the second direction to detect the opening surface.

12. The defect detection device according to claim 11, characterized in that: The third visual camera is movable along the second direction so as to be able to approach or move away from the battery core aluminum shell.

13. The defect detection device according to claim 11 or 12, characterized in that: The defect detection equipment also includes a third lighting component, which is arranged corresponding to the opening surface detection station and is used to illuminate the opening surface of the battery core aluminum shell.

14. The defect detection device according to claim 13, characterized in that: The lighting direction of the third lighting assembly is arranged at an angle to the second direction.

15. The defect detection device according to any one of claims 1 to 5, characterized in that: The detection platform is also formed with a picking station and a material receiving station, wherein the transmission path of the transmission device passes through the picking station and the material receiving station; The defect detection equipment also includes an adjustment mechanism, which is used to transfer the battery core aluminum shell at the picking station to the material receiving station and reverse its side surface and / or flip its bottom surface.

16. The defect detection device according to claim 15, characterized in that: A transition station is also formed on the detection platform; The adjustment mechanism includes a flipping assembly and a rotating assembly. The flipping assembly is used to flip the bottom surface of the battery core aluminum shell at the picking station and place it at the transition station. The rotating assembly is used to reverse the side surface of the battery core aluminum shell at the transition station and place it at the second inspection station.

17. The defect detection device according to claim 16, characterized in that: The detection platform is also provided with a plurality of fourth visual cameras corresponding to the transition stations, and the plurality of fourth visual cameras are respectively used to detect the shapes of a plurality of fillets of the aluminum shell of the battery core.

18. The defect detection device according to any one of claims 15 to 17, characterized in that: The transmission device comprises two transmission sections which are arranged in parallel, and the picking station and the material receiving station are respectively arranged corresponding to the two transmission sections.

19. The defect detection device according to claim 18, characterized in that: The adjustment mechanism can at least reverse the side of the battery core aluminum shell; The plurality of inspection stations include a large surface inspection station and a side surface inspection station, and the large surface inspection station and the side surface inspection station are respectively arranged corresponding to the two transmission sections.

20. The defect detection device according to claim 18, characterized in that The adjustment mechanism can at least turn over the bottom surface of the battery core aluminum shell; The plurality of inspection stations further include a bottom surface inspection station, and the bottom surface inspection station and the inner cavity inspection station are respectively arranged corresponding to the two transmission sections.

21. The defect detection device according to claim 18, characterized in that The plurality of detection stations further include an opening shape detection station and / or an opening surface detection station, and the opening shape detection station and / or the opening surface detection station and the inner cavity detection station are arranged corresponding to the same transmission section.

22. The defect detection device according to any one of claims 1 to 21, characterized in that: The detection platform is also provided with a material unloading station corresponding to the transmission device; The defect detection equipment includes a sorting mechanism, a defective product conveyor line and / or a good product conveyor line. The sorting mechanism is arranged corresponding to the unloading station, and is used to sort the defective battery cell aluminum shells at the unloading station to the defective product conveyor line, and to sort the good battery cell aluminum shells at the unloading station to the good product conveyor line.

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