Battery shell appearance comprehensive inspection equipment and inspection methods

Abstract

The present invention discloses comprehensive battery casing appearance inspection equipment and methods, including a first automated inspection device, a battery casing rotation device, a second automated inspection device, and a sorting and unloading device, arranged sequentially along the production line. The first automated inspection device utilizes a first automated inspection line that operates in a step-by-step manner, performing bottom wall line scanning inspection, first side wall line scanning inspection, and first horizontal chamfer edge inspection. The battery casing rotation device performs reversal. The second automated inspection device uses a battery casing conveyor belt to perform second horizontal chamfer edge inspection, second side wall line scanning inspection, first vertical chamfer edge inspection, second vertical chamfer edge inspection, open end deformation inspection, and inner surface inspection. The sorting and unloading device performs sorting and unloading. The present invention meets the requirements for comprehensive appearance inspection. It implements line scanning inspection of edges and surfaces, resulting in accurate and reliable inspection results and precise classification. It operates efficiently, smoothly, and stably, improving inspection efficiency.

Description

Technical Field

[0001] The present invention relates to battery shell appearance comprehensive detection equipment and detection method, belonging to the technical field of appearance detection equipment. Background Art

[0002] The power battery system (power battery pack) is the core energy source that provides driving power for new energy vehicles and is one of their most critical components. It primarily consists of battery modules, an electrical system, a thermal management system, a housing, and a battery management system (BMS). The housing encapsulates these components, forming the core of the power battery system.

[0003] The power battery system housing (battery housing) serves as the carrier of the battery module and plays a key role in the stable operation and safety protection of the battery module. In addition to ensuring strength, rigidity and collision safety requirements, it can also meet the IP67 protection level design requirements for electrical equipment housings.

[0004] At present, battery shells mainly adopt rectangular shells with open mouths. In order to meet the requirements of structural strength, forging is generally adopted. After forging, the battery shells need to be cleaned of oil and other dirt on them through a water washing line. After cleaning, they are cut and inspected for appearance. Generally, the appearance inspection requires inspection of five surfaces: the top surface of the rectangular shell, the outer wall surface of the rectangular shell, and the inner cavity of the rectangular shell, so as to ensure the quality stability of qualified battery shells.

[0005] In response to this situation, the applicant filed a Chinese invention patent with publication number CN117401410A, which discloses a turnover positioning appearance inspection device for battery casings. It uses two robotic arms in conjunction with a mounted inspection mechanism to achieve appearance inspection of the inner and outer surfaces, thereby improving inspection efficiency.

[0006] However, with the further improvement of battery safety standards, the requirements for appearance inspection of battery shells are becoming increasingly higher. The battery shell has an opening, and it is necessary to inspect the five outer surfaces, five inner surfaces, and R-corner edges adjacent to the outer surfaces of the battery shell. The R-corner edges are chamfered transition arc surfaces. Traditional automated equipment cannot achieve more targeted automated inspections. The increasingly stringent comprehensive inspection requirements have resulted in very high inspection operation time and costs. Summary of the Invention

[0007] The purpose of the present invention is to solve the above-mentioned deficiencies in the prior art. In view of the problem that traditional automated equipment cannot meet the requirements of comprehensive inspection of battery shells, a comprehensive inspection device and method for the appearance of battery shells are proposed.

[0008] In order to achieve the above object, the technical solution adopted by the present invention is:

[0009] Battery shell appearance comprehensive inspection equipment, including the first automated inspection device, battery shell rotation device, second automated inspection device, and classification unloading device, which are arranged in sequence along the production line direction;

[0010] The first automated inspection device includes at least one first automated inspection line, which includes a battery shell step-by-step conveying device and a first appearance inspection group. The battery shell step-by-step conveying device includes a switching position conveying mechanism, a loading station, and at least one support position arranged between the loading station and the battery shell rotating device. The switching position conveying mechanism includes a plurality of battery shell picking parts for performing battery shell turnover switching positions. A battery shell support seat is provided on the support position, and the battery shell support seat has a 180° rotation displacement. The first appearance inspection group is respectively provided on the path from the loading station to the support position and on the path from the support position to the battery shell rotating device;

[0011] The battery housing rotating device includes a rotating support platform and a steering drive source for driving the rotating support platform to perform a 90° rotational displacement drive;

[0012] The second automated inspection device includes a second inspection and conveying device, a second appearance inspection group, an inner surface inspection device, and a battery shell turnover mechanism for rotating the battery shell between the rotating support platform and the second inspection and conveying device. The second inspection and conveying device includes a battery shell conveyor belt, and the second appearance inspection group is provided on any side of the battery shell conveyor belt. The inner surface inspection device includes a flipping turnover mechanism for picking up the battery shell on the battery shell conveyor belt and flipping the open end, an inner surface inspection mechanism for performing inner surface inspection, a detection displacement mechanical arm for picking up the battery shell on the flipping turnover mechanism for relative detection displacement with the inner surface inspection mechanism, and a battery shell buffer device for receiving the battery shell after the inspection is completed;

[0013] The classification and unloading device includes a plurality of classification conveying lines and a unloading and classification conveying mechanism for circulating battery shells between the battery shell buffer device and any of the classification conveying lines.

[0014] Preferably, the first appearance inspection group includes a first side wall line scanning inspection mechanism and a first horizontal chamfer edge inspection mechanism;

[0015] A bottom wall line scanning detection mechanism is also provided on the path from the loading station to the support station;

[0016] The second appearance inspection group includes a second horizontal chamfer edge inspection mechanism, a second side wall line scanning inspection mechanism, a first vertical chamfer edge inspection mechanism, and a second vertical chamfer edge inspection mechanism;

[0017] An open end deformation detection mechanism for performing deformation detection on the open end is provided on the conveying path of the battery casing conveyor belt.

[0018] Preferably, a plurality of auxiliary support positions are provided between the loading station and the support position and between the support position and the battery casing rotating device, and the auxiliary support position includes an auxiliary battery casing support seat for supporting the bottom wall surface;

[0019] The image acquisition machines of the first side wall line scanning detection mechanism and the first horizontal chamfer edge detection mechanism are positioned higher than the support surface of the auxiliary battery housing support base;

[0020] The switching position conveying mechanism includes a switching position carrier with lifting and horizontal displacement, and several battery shell picking parts are arranged on the switching position carrier. The battery shell picking parts include a picking extension body extending from the open end to the bottom wall surface, and a negative pressure picking end arranged on the picking extension body.

[0021] Preferably, the first automated inspection line includes two first automated inspection lines arranged in mirror symmetry with each other, and the first appearance inspection groups of the two first automated inspection lines are arranged opposite to each other;

[0022] The battery shell rotating device is provided at the discharge end of any of the first automated testing lines;

[0023] The battery shell turnover mechanism includes two transfer picking ends arranged in a one-to-one correspondence with the battery shell rotating device and used for performing tidal turnover switching displacement between the corresponding battery shell rotating device and the second detection and conveying device.

[0024] Preferably, the inner surface detection mechanism includes a plurality of inner surface detection ends with pivotally adjustable displacements, the detection displacement mechanical arm is provided with a picking carrier mechanism, the picking carrier mechanism is provided with a plurality of bottom wall picking ends arranged in one-to-one correspondence with the inner surface detection ends, and the plurality of bottom wall picking ends have linked rotation detection displacements;

[0025] The flip turnover mechanism includes a flipping part and an abutment limit part, the flipping part and the abutment limit part are arranged on both sides of the battery shell conveyor belt and are arranged opposite to each other, the abutment limit part includes a number of push abutment limit ends with horizontal linear displacement, the number of which is the same as the bottom wall picking end, the flipping part includes a flipping carrier with a 180° flipping displacement, and the flipping carrier is provided with a flipping negative pressure adsorption end for adsorbing the second side wall surface, which corresponds one-to-one with the push abutment limit end.

[0026] Preferably, the flipping part includes a material receiving carrier, and the material receiving carrier is provided with a transfer bearing part which is arranged in a one-to-one correspondence with the flipping negative pressure adsorption end and is used to receive the battery shell on the flipping negative pressure adsorption end, and the transfer bearing part is provided with a floating base with floating displacement.

[0027] Preferably, the battery shell caching device includes a plurality of reset and flip mechanisms arranged in a one-to-one correspondence with the bottom wall picking end and a plurality of battery shell caching seats arranged in a one-to-one correspondence with the reset and flip mechanisms;

[0028] The reset and flip mechanism includes a reset and flip negative pressure adsorption end with a 180° flip displacement for adsorbing the first side wall surface.

[0029] Preferably, two sets of inner surface detection devices are provided on both sides of the battery casing conveyor belt.

[0030] The unloading classification and conveying mechanism includes two classification unloading transfer and picking ends which are arranged in a one-to-one correspondence with the battery shell buffer device.

[0031] Preferably, the battery shell appearance comprehensive inspection equipment is arranged at the discharge end of the battery shell cleaning equipment, the feed end of the first automated inspection line is provided with a feed conveyor belt arranged opposite to the discharge end of the battery shell cleaning equipment, the loading station is arranged on the feed conveyor belt, and the feed conveyor belt is provided with a battery shell positioning mechanism arranged opposite to the loading station.

[0032] The present invention also proposes a method for inspecting the appearance of a battery casing, which is characterized by comprising the following steps:

[0033] The battery shell is loaded onto the loading station, with the open end of the battery shell facing the top and the second side wall of the battery shell facing the battery shell rotating device;

[0034] The switching position conveying mechanism picks up the battery shell on the loading position and steps the switching position to the support position, and passes through the first appearance inspection group for inspection in sequence. After the battery shell support seat on the support position rotates the battery shell 180 degrees to change the surface, the switching position conveying mechanism picks up the battery shell on the support position and steps the switching position to the battery shell rotating device, and passes through the first appearance inspection group for inspection in sequence.

[0035] The steering drive source of the battery casing rotating device drives the rotating support platform to rotate 90 degrees, and the first side wall surface of the battery casing on the rotating support platform faces the conveying direction of the battery casing conveyor belt;

[0036] The battery shell turnover mechanism picks up the battery shell on the rotating support platform and conveys it to the battery shell conveyor belt. The battery shell runs on the battery shell conveyor belt and passes through the two second appearance inspection groups until it is relative to the position of the inner surface inspection mechanism. The flipping turnover mechanism picks up the battery shell on the battery shell conveyor belt and flips it 180 degrees so that the bottom wall of the battery shell faces the top. After the displacement detection robot arm picks up the battery shell, the open end of the battery shell is subjected to internal five-surface displacement detection toward the inner surface inspection mechanism. After the inspection is completed, the battery shell is placed on the battery shell buffer device;

[0037] The unloading, sorting and conveying mechanism transfers the battery shells on the battery shell buffer device to the sorting conveying line according to the detection results.

[0038] The beneficial effects of the present invention are mainly reflected in:

[0039] 1. Meet the comprehensive appearance inspection requirements of battery shells.

[0040] 2. It can realize line scanning detection of edges and surfaces, with accurate and reliable detection results and precise classification.

[0041] 3. The operation is efficient, smooth and stable, which improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0043] Figure 1 It is a structural schematic diagram of the battery shell appearance comprehensive inspection equipment of the present invention.

[0044] Figure 2 It is a schematic top view of the structure of the battery shell appearance comprehensive inspection equipment of the present invention.

[0045] Figure 3 It is a structural schematic diagram of the connection between the battery shell appearance comprehensive inspection equipment and the battery shell cleaning equipment of the present invention.

[0046] Figure 4 It is a structural schematic diagram of the battery housing in the present invention.

[0047] Figure 5 It is a structural diagram of the switching position conveying mechanism in the present invention.

[0048] Figure 6 It is a structural schematic diagram of the bottom wall line scanning detection mechanism in the present invention.

[0049] Figure 7 It is a structural schematic diagram of the first side wall line scanning detection mechanism in the present invention.

[0050] Figure 8 It is a structural schematic diagram of the first horizontal chamfer edge detection mechanism in the present invention.

[0051] Figure 9 It is a structural schematic diagram of the battery housing rotating device in the present invention.

[0052] Figure 10 It is a structural schematic diagram of the battery housing turnover mechanism in the present invention.

[0053] Figure 11 It is a structural schematic diagram of the battery casing conveyor belt in the present invention.

[0054] Figure 12 It is a structural schematic diagram of the second horizontal chamfer edge detection mechanism in the present invention.

[0055] Figure 13 It is a structural schematic diagram of the second side wall line scanning detection mechanism in the present invention.

[0056] Figure 14 It is a structural schematic diagram of the first vertical chamfer edge detection mechanism and the second vertical chamfer edge detection mechanism in the present invention.

[0057] Figure 15 It is a structural schematic diagram of the open end deformation detection mechanism in the present invention.

[0058] Figure 16 It is a structural diagram of the turnover mechanism of the present invention.

[0059] Figure 17 It is a structural schematic diagram of the inner surface detection mechanism and the detection displacement mechanical arm in the present invention.

[0060] Figure 18 It is a structural schematic diagram of the battery housing buffer device in the present invention.

[0061] Figure 19 It is a structural diagram of the unloading classification and conveying mechanism in the present invention.

[0062] Figure 20 It is a structural schematic diagram of the feed conveyor belt in the present invention. DETAILED DESCRIPTION

[0063] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making creative efforts shall fall within the scope of protection of the present invention.

[0064] The present application will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to explain the relevant inventions and are not intended to limit the inventions. It should also be noted that, for ease of description, only portions relevant to the relevant inventions are shown in the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application may be combined with each other.

[0065] The present invention provides a comprehensive inspection device for the appearance of battery shells, such as Figure 4 As shown, the battery housing 1 is a rectangular housing with an open end 10. The outer surface of the rectangular housing includes two oppositely arranged first side walls 11, two oppositely arranged second side walls 12, and a bottom wall 13 opposite to the open end. The area of ​​the first side wall 11 is larger than the area of ​​the second side wall 12. A vertical chamfered edge 14 is provided between the first side wall 11 and the second side wall 12, a first horizontal chamfered edge 15 is provided between the first side wall 11 and the bottom wall, and a second horizontal chamfered edge 16 is provided between the second side wall and the bottom wall.

[0066] When performing visual inspection on the traditional battery shell 1, only the five inner and five outer surfaces are inspected, and the automated design uses a robotic arm for relative position adjustment. First, it cannot meet the inspection requirements of chamfered edges. In addition, the product automation turnover and programming control are also very cumbersome and cannot meet the requirements of smoother surface inspection.

[0067] like Figures 1 to 20 As shown, the battery shell appearance comprehensive inspection equipment includes a first automated inspection device 100, a battery shell rotating device 2, a second automated inspection device 200, and a classification and unloading device 3 arranged in sequence along the production line direction.

[0068] like Figures 1 to 3As shown, the first automated inspection device 100 includes at least one first automated inspection line 4, the first automated inspection line 4 includes a battery shell step-by-step conveying device 41, a first appearance inspection group 42, the battery shell step-by-step conveying device 41 includes a switching position conveying mechanism 411, a loading station 412, and at least one support position 413 arranged between the loading station and the battery shell rotating device. The switching position conveying mechanism 411 includes a plurality of battery shell picking parts 411 for sequentially switching the battery shell turnover position between the loading station, the support position, and the battery shell rotating device. 0, a battery shell support seat for supporting the bottom wall is provided on the support position 413, and the battery shell support seat has a 180° rotation displacement. The first appearance inspection group 42 includes a bottom wall surface line scanning detection mechanism 421, a first side wall surface line scanning detection mechanism 422 and a first horizontal chamfer edge detection mechanism 423. A bottom wall surface line scanning detection mechanism, a first side wall surface line scanning detection mechanism and a horizontal chamfer edge detection mechanism are provided on the path from the loading station to the support position. A first side wall surface line scanning detection mechanism and a first horizontal chamfer edge detection mechanism are provided on the path from the support position to the battery shell rotating device.

[0069] like Figure 1 、 Figure 2 、 Figure 9 As shown, the battery casing rotating device 2 includes a rotating support platform 21 and a steering drive source 22 for driving the rotating support platform to perform a 90° rotation displacement drive.

[0070] like Figures 1 to 3 As shown, the second automated inspection device 200 includes a second inspection and conveying device 5, a second appearance inspection group 6, an inner surface inspection device 7, and a battery shell turnover mechanism 8 for rotating the battery shell between the rotating support platform and the second inspection and conveying device. The second inspection and conveying device 5 includes a battery shell conveyor belt 51 for carrying the battery shell for linear transportation. The second appearance inspection group 6 includes a second horizontal chamfer edge detection mechanism 61, a second side wall line scanning detection mechanism 62, a first vertical chamfer edge detection mechanism 63, and a second vertical chamfer edge detection mechanism 64. The battery shell A second appearance inspection group is provided on any side of the conveyor belt 5, and an open end deformation detection mechanism 52 for performing deformation detection on the open end is provided on the conveying path of the battery shell conveyor belt. The inner surface detection device 7 includes a turning-over turnover mechanism 71 for picking up the battery shell on the battery shell conveyor belt and turning over the open end, an inner surface detection mechanism 72 for performing inner surface detection, a detection displacement mechanical arm 73 for picking up the battery shell on the turning-over turnover mechanism and cooperating with the inner surface detection mechanism to detect displacement, and a battery shell cache device 74 for taking over the battery shell after the inspection.

[0071] The classification and unloading device 3 includes a plurality of classification conveying lines 31 and a classification and unloading conveying mechanism 32 for circulating battery shells between the battery shell buffer device and any classification conveying line.

[0072] Specific implementation process and principle description:

[0073] The battery shell 1 is fed from the front end to the loading station 412, and the several battery shell picking parts 4110 of the switching position conveying mechanism 411 perform step-by-step conveying of the battery shell 1 to the switching position. The battery shell 1 passes through the loading station and the supporting position in sequence and finally enters the battery shell rotating device.

[0074] During the turnover process from the loading station to the support position, the battery shell 1 is inspected separately by the bottom wall line scanning detection mechanism 421, the first side wall line scanning detection mechanism 422 and the first horizontal chamfer edge detection mechanism 423. During this inspection, the battery shell 1 is in a suspended displacement state, which can meet the inspection operation requirements of the line scanning.

[0075] When the battery casing 1 falls onto the support position, the battery casing support base rotates 180 degrees. When the battery casing rotation device is operated from the support position, the first side wall line scanning detection mechanism and the first horizontal chamfer edge detection mechanism are used to detect the corresponding parts after the surface is changed. The battery casing support base can be equipped with magnetic adsorption or negative pressure adsorption to ensure the stability of the battery casing during transfer.

[0076] It should be noted that the traditional bottom-supporting conveying leads to blind spots in the detection of the first side wall and the first horizontal chamfered edge, that is, the image collection is incomplete. The step-by-step switching workstation method can realize suspended displacement drive, thereby meeting the detection needs.

[0077] Among them, the bottom wall line scanning detection mechanism 421 and the first side wall line scanning detection mechanism 422 realize line scanning detection of the opposite surfaces, and the first horizontal chamfered edge realizes line scanning or fixed-point full image acquisition detection.

[0078] Finally, when the battery case is rotated, the steering drive source 22 drives the rotating support platform 21 to rotate 90 degrees, so that the direction of the second side wall is adjusted. The rotating support platform 21 can be provided with magnetic adsorption or negative pressure adsorption to ensure the stability of the battery case after loading.

[0079] When the second automated detection device 200 is running, the battery shell turnover mechanism 8 picks up the battery shell on the battery shell rotating device and conveys it to the battery shell conveyor belt 51. The battery shell runs along with the battery shell conveyor belt 51, and passes through the open end deformation detection mechanism 52, the second horizontal chamfered edge detection mechanism 61, the second side wall surface line scanning detection mechanism 62, the first vertical chamfered edge detection mechanism 63, and the second vertical chamfered edge detection mechanism 64 to realize the detection of their respective mechanisms.

[0080] It should be noted that the battery housing is arranged on the battery housing conveyor belt 51, and the second horizontal chamfered edge of the battery housing is exposed relative to the battery housing conveyor belt 51. This meets the detection requirements of the second side wall surface and the second horizontal chamfered edge without causing any obstruction.

[0081] The structure of the battery shell conveyor belt 51 is explained. It adopts three parallel and spaced circulating belts, wherein the circulating belts are provided with protrusions arranged at even intervals. The positions of the protrusions on the circulating belts on both sides correspond one to one, and the protrusions on the middle circulating belt are staggered with the positions of the protrusions on any side circulating belts. A limiting space for the battery shell is formed between the two corresponding protrusions on the two side circulating belts and the protrusion on the middle circulating belt.

[0082] The open end deformation detection mechanism 52 is as follows Figure 15 As shown, it uses an image acquisition end and a ring-shaped supplementary light source to perform deformation detection. The detection of the second horizontal chamfer edge detection mechanism 61, the second side wall line scanning detection mechanism 62, the first vertical chamfer edge detection mechanism 63, and the second vertical chamfer edge detection mechanism 64 are similar to the first horizontal chamfer edge detection mechanism and the first side wall line scanning detection mechanism. The difference is that the first vertical chamfer edge detection mechanism 63 and the second vertical chamfer edge detection mechanism 64 can be as follows Figure 14 As shown, a common carrier is used for mounting, and the first vertical chamfered edge detection mechanism 63 and the second vertical chamfered edge detection mechanism 64 both have horizontal and vertical pivot deflection displacements, thus meeting the relative position adjustment and detection requirements for battery shells of different specifications.

[0083] When all the outer surfaces have been inspected, the inner surface of the battery shell is inspected by the inner surface inspection device 7. Specifically, the flipping turnover mechanism 71 picks up the battery shell on the battery shell conveyor belt 51 and flips it over to dock with the inspection displacement robot 73. After the inspection displacement robot 73 picks up the bottom wall of the battery shell, it moves to the open end toward the inner surface inspection mechanism 72. At this time, the inspection displacement robot 73 adjusts its position relative to the inner surface inspection mechanism 72 to meet the switching position inspection and alignment of its five inner surfaces, thereby realizing the inspection of the five inner surfaces. After the inspection is completed, it is placed on the battery shell cache device 74.

[0084] The unloading classification and conveying mechanism 32 transfers the battery shells on the battery shell buffer device 74 to the classification conveying line 31 corresponding to the detection result according to the detection classification.

[0085] In a specific embodiment, a plurality of auxiliary support positions 414 are provided between the loading station 412 and the support position 413 and between the support position 413 and the battery housing rotating device 2. The auxiliary support positions include auxiliary battery housing support seats for supporting the bottom wall. The auxiliary battery housing support seats can be provided with magnetic adsorption or negative pressure adsorption.

[0086] The image acquisition machines of the first side wall line scanning detection mechanism and the first horizontal chamfer edge detection mechanism are positioned higher than the supporting surface of the auxiliary battery housing support seat.

[0087] The switching position conveying mechanism 411 includes a switching position carrier 4111 with lifting and horizontal displacement, and several battery shell picking parts are arranged on the switching position carrier. The battery shell picking part 4110 includes a picking extension body extending from the open end to the bottom wall surface and a negative pressure picking end arranged on the picking extension body.

[0088] Specifically, in order to stabilize the suspended conveying path of the battery shell, the design of the auxiliary support position 414 is adopted, which can realize the transfer pause of the intermediate station switching and facilitate the arrangement of the detection mechanism.

[0089] The switching position conveying mechanism 411 is implemented by a switching position carrier 4111, which generally does not adopt a swing arm type switching position structure. Therefore, line scanning requires linear displacement coordination, so it is designed in this way.

[0090] In a specific embodiment, the first automated inspection line 100 includes two first automated inspection lines 4 that are arranged in mirror symmetry with each other, and the first appearance inspection groups of the two first automated inspection lines are arranged opposite to each other.

[0091] A battery shell rotating device is provided at the discharge end of any first automated testing line.

[0092] The battery shell turnover mechanism 8 includes two transfer picking ends 80 arranged in one-to-one correspondence with the battery shell rotating device and used for tidal turnover switching displacement between the corresponding battery shell rotating device and the second detection and conveying device.

[0093] Specifically, the two first automated inspection lines 4 are coordinated with one second inspection and conveying device to achieve two-in-one inspection production line coordination and improve inspection efficiency.

[0094] Due to the use of double-line coordination, the first appearance inspection group has a single-sided design to facilitate the relatively coordinated production line layout. The two transfer and picking ends have 80 coordinated tidal operations, which run efficiently and smoothly.

[0095] In a specific embodiment, the first automated detection device includes a spare fault-eliminating conveyor belt 101 disposed between two first automated detection lines.

[0096] Specifically, during the actual operation of the appearance inspection, there may be situations such as failure of the rear-end mechanism. Therefore, the design of the spare fault-guiding conveyor belt 101 can guide the front-end feed away when a failure occurs in the inspection of this equipment, and can guide it to the manual inspection line, so as not to cause periodic pauses.

[0097] In a specific embodiment, the inner surface detection mechanism 72 includes several inner surface detection ends 720 with pivot adjustment displacement, and the detection displacement mechanical arm 73 is provided with a picking carrier mechanism 731, and the picking carrier mechanism is provided with several bottom wall picking ends 732 arranged one-to-one corresponding to the inner surface detection ends, and the several bottom wall picking ends have interconnected rotation detection displacements.

[0098] like Figure 17 As shown, the picking carrier mechanism 731 is provided with a rotation linkage mechanism 733 for rotationally displacing a plurality of bottom wall picking ends 732. The displacement adjustment of the picking carrier mechanism 731 satisfies the positioning and picking position requirements of the plurality of bottom wall picking ends 732, and then the positioning is performed one-to-one with the inner surface detection end 720. After the positioning, the rotation drive of the bottom wall picking end 732 is realized by the rotation linkage mechanism 733, thereby adjusting the displacement adjustment of the switching position of the inner five surfaces of the battery shell to meet the detection requirements of the inner five surfaces.

[0099] The flipping turnover mechanism 71 includes a flipping part 711 and a butt limit part 712. The flipping part 711 and the butt limit part 712 are respectively arranged on both sides of the battery shell conveyor belt 51 and are arranged opposite to each other. The butt limit part 712 includes a number of push butt limit ends 7120 with horizontal linear displacement, the same number as the bottom wall picking end. The flipping part 711 includes a flipping carrier 7111 with a 180° flipping displacement. The flipping carrier 7111 is provided with a flipping negative pressure adsorption end 7112 for adsorbing the second side wall surface, which corresponds one-to-one with the push butt limit end.

[0100] Specifically, when the battery shell conveyor belt 51 conveys the battery shell to a position relative to the push-butt limit end 7120, several push-butt limit ends 7120 perform push-butt limit, and realize the clamping state of the battery shell with the flip negative pressure adsorption end 7112, satisfying the stable adsorption effect of the flip negative pressure adsorption end 7112. After adsorption, the push-butt limit end is linearly reset, and avoidance space is provided at this time, and the flip carrier 7111 realizes a 180° flip.

[0101] In a specific embodiment, the flipping part 711 includes a material receiving carrier 713, on which a transfer bearing part 7130 is provided, which is arranged one-to-one corresponding to the flipping negative pressure adsorption end and is used to receive the battery shell on the flipping negative pressure adsorption end. The transfer bearing part is provided with a floating base with floating displacement.

[0102] Specifically, in order to facilitate the material turnover in coordination with the detection displacement robot arm 73, a transfer support and floating design of the material receiving carrier 713 is adopted, so that the material transfer is smooth, efficient and stable.

[0103] In a specific embodiment, the battery shell cache device 74 includes a plurality of reset flipping mechanisms 741 arranged one-to-one corresponding to the bottom wall picking end and a plurality of battery shell cache seats 742 arranged one-to-one corresponding to the reset flipping mechanisms. The reset flipping mechanism includes a reset flipping negative pressure adsorption end with a 180° flipping displacement for adsorbing the first side wall surface.

[0104] Specifically, when the battery shell is fed, the open end is facing the top, but when the inner surface is inspected, the direction of the open end changes. During the back-end processing and assembly operations, the open end is required to face upward. Therefore, the reset cache design is adopted, which meets the conveying requirements of the open end facing the top.

[0105] In a specific embodiment, two sets of inner surface detection devices are arranged opposite to each other on both sides of the battery shell conveyor belt; the unloading classification conveying mechanism includes two classification unloading transfer picking ends arranged in one-to-one correspondence with the battery shell buffer devices.

[0106] This makes the detection more efficient and significantly improves the detection efficiency.

[0107] In a specific embodiment, a comprehensive inspection device for the appearance of a battery shell is arranged at the discharge end of a battery shell cleaning device 300, and the feed end of the first automated inspection line is provided with a feed conveyor belt 43 arranged opposite to the discharge end of the battery shell cleaning device, and a loading station 412 is arranged on the feed conveyor belt, and a battery shell positioning mechanism 430 is provided on the feed conveyor belt, which is arranged opposite to the loading station.

[0108] This meets the requirements of material feeding, conveying and precise positioning.

[0109] The detection method of the battery shell appearance comprehensive detection device of the present invention is described as follows:

[0110] The battery shell is loaded onto the loading station, with the open end of the battery shell facing the top and the second side wall of the battery shell facing the battery shell rotating device.

[0111] That is, it meets the docking requirements of the battery shell with the open end facing the top after the front end is cleaned.

[0112] The switching position conveying mechanism picks up the battery shell on the loading position and steps the switching position to the support position, and passes through the bottom wall line scanning detection mechanism, the first side wall line scanning detection mechanism and the first horizontal chamfer edge detection mechanism to detect the bottom wall, the current first side wall and the first horizontal chamfer edge. After the battery shell support seat on the support position rotates the battery shell 180°, the switching position conveying mechanism picks up the battery shell on the support position and steps the switching position to the battery shell rotating device, and passes through the first side wall line scanning detection mechanism and the first horizontal chamfer edge detection mechanism to detect the current first side wall and the first horizontal chamfer edge.

[0113] The steering drive source of the battery casing rotating device drives the rotating support platform to rotate 90 degrees, and the first side wall surface of the battery casing on the rotating support platform faces the conveying direction of the battery casing conveyor belt.

[0114] The battery shell turnover mechanism picks up the battery shell on the rotating support platform and conveys it to the battery shell conveyor belt. The battery shell runs on the battery shell conveyor belt and passes through the open end deformation detection mechanism and two second appearance detection groups. After the open end detection, two second side wall detection, and four vertical chamfered edge detection are performed, it is positioned relative to the inner surface detection mechanism. The flipping turnover mechanism picks up the battery shell on the battery shell conveyor belt and flips it 180° so that the bottom wall of the battery shell faces the top. After the detection displacement robot arm picks up the battery shell, the five inner displacements of the open end of the battery shell toward the inner surface detection mechanism are detected. After the detection is completed, the battery shell is placed on the battery shell cache device.

[0115] The unloading and sorting conveying mechanism transfers the battery shells from the battery shell buffer device to the sorting conveying line according to the detection results, completing the sorting output.

[0116] The above description demonstrates that the system meets the requirements for comprehensive battery casing appearance inspection. It can perform line scanning inspections of edges and surfaces, delivering accurate and reliable results and precise classification. Its efficient, smooth, and stable operation improves inspection efficiency.

[0117] The term "comprise" or any other similar term is intended to cover non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0118] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. Battery shell appearance comprehensive inspection equipment, characterized by: It includes a first automated detection device, a battery shell rotating device, a second automated detection device, and a classification and unloading device which are sequentially arranged along the production line direction; The first automated inspection device includes at least one first automated inspection line, which includes a battery shell step-by-step conveying device and a first appearance inspection group. The battery shell step-by-step conveying device includes a switching position conveying mechanism, a loading station, and at least one support position arranged between the loading station and the battery shell rotating device. The switching position conveying mechanism includes a plurality of battery shell picking parts for performing battery shell turnover switching positions. A battery shell support seat is provided on the support position, and the battery shell support seat has a 180° rotation displacement. The first appearance inspection group is respectively provided on the path from the loading station to the support position and on the path from the support position to the battery shell rotating device; The battery housing rotating device includes a rotating support platform and a steering drive source for driving the rotating support platform to perform a 90° rotational displacement drive; The second automated inspection device includes a second inspection and conveying device, a second appearance inspection group, an inner surface inspection device, and a battery shell turnover mechanism for rotating the battery shell between the rotating support platform and the second inspection and conveying device. The second inspection and conveying device includes a battery shell conveyor belt, and the second appearance inspection group is provided on any side of the battery shell conveyor belt. The inner surface inspection device includes a flipping turnover mechanism for picking up the battery shell on the battery shell conveyor belt and flipping the open end, an inner surface inspection mechanism for performing inner surface inspection, a detection displacement mechanical arm for picking up the battery shell on the flipping turnover mechanism for relative detection displacement with the inner surface inspection mechanism, and a battery shell buffer device for receiving the battery shell after the inspection is completed; The classification and unloading device includes several classification conveying lines and a classification and unloading conveying mechanism for circulating battery shells between the battery shell buffer device and any of the classification conveying lines; The first appearance inspection group includes a first side wall line scanning inspection mechanism and a first horizontal chamfer edge inspection mechanism; A bottom wall line scanning detection mechanism is also provided on the path from the loading station to the support station; The second appearance inspection group includes a second horizontal chamfer edge inspection mechanism, a second side wall line scanning inspection mechanism, a first vertical chamfer edge inspection mechanism, and a second vertical chamfer edge inspection mechanism; An open end deformation detection mechanism for detecting deformation of the open end is provided on the conveying path of the battery casing conveyor belt; The inner surface detection mechanism includes a plurality of inner surface detection ends with pivot adjustment displacement, the detection displacement mechanical arm is provided with a picking carrier mechanism, the picking carrier mechanism is provided with a plurality of bottom wall picking ends arranged in a one-to-one correspondence with the inner surface detection ends, and the plurality of bottom wall picking ends have a linked rotation detection displacement; The flip turnover mechanism includes a flipping part and an abutment limit part, the flipping part and the abutment limit part are arranged on both sides of the battery shell conveyor belt and are arranged opposite to each other, the abutment limit part includes a number of push abutment limit ends with horizontal linear displacement, the number of which is the same as the bottom wall picking end, the flipping part includes a flipping carrier with a 180° flipping displacement, and the flipping carrier is provided with a flipping negative pressure adsorption end for adsorbing the second side wall surface, which corresponds one-to-one with the push abutment limit end.

2. The battery casing appearance comprehensive inspection device according to claim 1, characterized in that: A plurality of auxiliary support positions are respectively provided between the loading station and the support position and between the support position and the battery shell rotating device, and the auxiliary support position includes an auxiliary battery shell support seat for supporting the bottom wall surface; The image acquisition machines of the first side wall line scanning detection mechanism and the first horizontal chamfer edge detection mechanism are positioned higher than the support surface of the auxiliary battery housing support base; The switching position conveying mechanism includes a switching position carrier with lifting and horizontal displacement, and several battery shell picking parts are arranged on the switching position carrier. The battery shell picking parts include a picking extension body extending from the open end to the bottom wall surface, and a negative pressure picking end arranged on the picking extension body.

3. The battery casing appearance comprehensive inspection device according to claim 2, characterized in that: The first automated inspection line includes two first automated inspection lines arranged in mirror symmetry, and the first appearance inspection groups of the two first automated inspection lines are arranged opposite to each other; The battery shell rotating device is provided at the discharge end of any of the first automated testing lines; The battery shell turnover mechanism includes two transfer picking ends arranged in a one-to-one correspondence with the battery shell rotating device and used for performing tidal turnover switching displacement between the corresponding battery shell rotating device and the second detection and conveying device.

4. The battery casing appearance comprehensive inspection device according to claim 1, characterized in that: The flip part includes a material receiving carrier, which is provided with a transfer bearing part arranged in a one-to-one correspondence with the flip negative pressure adsorption end and used to receive the battery shell on the flip negative pressure adsorption end, and the transfer bearing part is provided with a floating base with floating displacement.

5. The battery casing appearance comprehensive inspection device according to claim 1, characterized in that: The battery shell caching device includes a plurality of reset flipping mechanisms arranged in a one-to-one correspondence with the bottom wall picking end and a plurality of battery shell caching seats arranged in a one-to-one correspondence with the reset flipping mechanisms; The reset and flip mechanism includes a reset and flip negative pressure adsorption end with a 180° flip displacement for adsorbing the first side wall surface.

6. The battery casing appearance comprehensive inspection device according to claim 1, characterized in that: Two sets of inner surface detection devices are provided on both sides of the battery casing conveyor belt. The unloading classification and conveying mechanism includes two classification unloading transfer and picking ends which are arranged in a one-to-one correspondence with the battery shell buffer device.

7. The battery casing appearance comprehensive inspection device according to claim 1, characterized in that: The battery shell appearance comprehensive inspection equipment is arranged at the discharge end of the battery shell cleaning equipment, the feed end of the first automated inspection line is provided with a feed conveyor belt arranged opposite to the discharge end of the battery shell cleaning equipment, the loading station is arranged on the feed conveyor belt, and the feed conveyor belt is provided with a battery shell positioning mechanism arranged opposite to the loading station.

8. A detection method based on the battery casing appearance comprehensive detection device according to any one of claims 1 to 7, characterized in that The steps include: The battery shell is loaded onto the loading station, with the open end of the battery shell facing the top and the second side wall of the battery shell facing the battery shell rotating device; The switching position conveying mechanism picks up the battery shell on the loading position and steps the switching position to the support position, and passes through the first appearance inspection group for inspection in sequence. After the battery shell support seat on the support position rotates the battery shell 180 degrees to change the surface, the switching position conveying mechanism picks up the battery shell on the support position and steps the switching position to the battery shell rotating device, and passes through the first appearance inspection group for inspection in sequence. The steering drive source of the battery casing rotating device drives the rotating support platform to rotate 90 degrees, and the first side wall surface of the battery casing on the rotating support platform faces the conveying direction of the battery casing conveyor belt; The battery shell turnover mechanism picks up the battery shell on the rotating support platform and conveys it to the battery shell conveyor belt. The battery shell runs on the battery shell conveyor belt and passes through the two second appearance inspection groups to the position opposite to the inner surface inspection mechanism. The flipping turnover mechanism picks up the battery shell on the battery shell conveyor belt and flips it 180 degrees so that the bottom wall of the battery shell faces the top. After the displacement detection robot arm picks up the battery shell, the open end of the battery shell is faced to the inner surface inspection mechanism for internal five-surface displacement detection. After the inspection is completed, the battery shell is placed on the battery shell buffer device; The unloading, sorting and conveying mechanism transfers the battery shells on the battery shell buffer device to the sorting conveying line according to the detection results.

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