Battery shell appearance comprehensive detection equipment and detection method

Abstract

The invention discloses battery shell appearance comprehensive detection equipment and a detection method. The battery shell appearance comprehensive detection equipment comprises a first automatic detection device, a battery shell rotating device, a second automatic detection device and a classified discharging device which are sequentially arranged in the direction of a production line, the first automatic detection device adopts a first automatic detection line which operates in a stepping mode, and bottom wall face line scanning detection, first side wall face line scanning detection and first horizontal chamfer edge detection are achieved. The battery shell rotating device is reversed; the second automatic detection device realizes second horizontal chamfer edge detection, a second side wall surface line scanning detection mechanism, a first vertical chamfer edge detection, a second vertical chamfer edge detection, an open end deformation detection mechanism and inner surface detection through conveying of the battery shell conveying belt; and the classified discharging device performs classified discharging. The comprehensive appearance detection requirement is met. Line scanning detection of the edges and the surfaces is achieved, the detection result is accurate and reliable, and classification is accurate. Operation is efficient, smooth and stable, and detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to a comprehensive appearance detection device and method for a battery housing, belonging to the technical field of appearance detection devices. Background Art

[0002] The power battery system (power battery PACK, battery pack) is the core energy source that provides driving electric energy for new energy vehicles and is one of the most critical components of new energy vehicles. The power battery system mainly consists of components such as battery modules, electrical systems, thermal management systems, housings, and BMS. The battery modules, electrical systems, thermal management systems, and BMS are encapsulated through the housing to form the main body of the power battery system.

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

[0004] Currently, the battery housing mainly adopts a rectangular housing with an opening. In order to meet its structural strength and other requirements, forging is generally used. After the battery housing is forged, it is necessary to clean the oil stains and the like on it through a water washing line. After cleaning, it is cut and then subjected to appearance inspection. Generally, the appearance inspection needs to be carried out on the top surface of the rectangular housing, the outer peripheral wall surface of the rectangular housing, and the five surfaces of the inner cavity of the rectangular housing to ensure the stable quality of the qualified battery housing.

[0005] In response to this situation, the applicant proposed a Chinese invention patent with the publication number CN117401410A, which discloses a turnover positioning appearance inspection device for a battery housing, and uses two robotic arms to cooperate with a detection mechanism to achieve appearance inspection of the inner surface and the outer surface, improving the detection efficiency.

[0006] However, with the further improvement of battery safety standards, the requirements for the appearance inspection of battery housings are getting higher and higher. Since the battery housing has an opening, it is necessary to inspect the five outer surfaces, five inner surfaces, and the R - corner edges adjacent to the outer surface of the battery housing. The R - corner edge is the chamfered transition arc surface. Traditional automated equipment cannot achieve more targeted automated inspection, and the increasingly stringent comprehensive inspection requirements lead to very high detection operation time and costs. Summary of the Invention

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

[0008] In order to achieve the above - mentioned purpose, the technical solution adopted by the present invention is as follows: Battery housing appearance comprehensive detection equipment, including a first automatic detection device, a battery housing rotation device, a second automatic detection device, and a sorting and discharging device arranged in sequence along the production line direction; The first automatic detection device includes at least one first automatic detection line. The first automatic detection line includes a battery housing step-by-step conveying device and a first appearance detection group. The battery housing 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 housing rotation device. The switching position conveying mechanism includes a plurality of battery housing picking parts for turning and switching the battery housing positions. The support position is provided with a battery housing support seat, and the battery housing support seat has a 180° rotational displacement. The first appearance detection group is respectively arranged on the path from the loading station to the support position and the path from the support position to the battery housing rotation device; The battery housing rotation device includes a rotation support platform and a steering drive source for driving the rotation support platform to perform a 90° rotational displacement; The second automatic detection device includes a second detection conveying device, a second appearance detection group, an inner surface detection device, and a battery housing turnover mechanism for turning over the battery housing between the rotation support platform and the second detection conveying device. The second detection conveying device includes a battery housing conveyor belt, and the second appearance detection group is arranged on any side of the battery housing conveyor belt. The inner surface detection device includes a turnover mechanism for picking up the battery housing on the battery housing conveyor belt to turn over the open end, an inner surface detection mechanism for performing inner surface detection, a detection displacement robotic arm for picking up the battery housing on the turnover mechanism to perform relative cooperative detection displacement with the inner surface detection mechanism, and a battery housing buffer device for receiving the battery housing after detection is completed; The sorting and discharging device includes a plurality of sorting conveyor lines and a discharging and sorting conveying mechanism for turning over the battery housing between the battery housing buffer device and any of the sorting conveyor lines.

[0009] Preferably, the first appearance detection group includes a first side wall surface line scan detection mechanism and a first horizontal chamfer edge detection mechanism; A bottom wall surface line scan detection mechanism is also arranged on the path from the loading station to the support position; The second appearance detection group includes a second horizontal chamfer edge detection mechanism, a second side wall surface line scan detection mechanism, a first vertical chamfer edge detection mechanism, and a second vertical chamfer edge detection mechanism; An open end deformation detection mechanism for detecting the deformation of the open end is arranged on the conveying path of the battery housing conveyor belt.

[0010] Preferably, a number of auxiliary support positions are respectively provided between the loading position and the support position and between the support position and the battery case rotating device. The auxiliary support position includes an auxiliary battery case support seat for supporting the bottom wall surface. The imaging acquisition positions of the first side wall surface line scan detection mechanism and the first horizontal chamfer edge detection mechanism are higher than the support surface of the auxiliary battery case support seat. The switching position conveying mechanism includes a switching position carrier seat with lifting displacement and horizontal displacement. A number of the battery case picking parts are arranged on the switching position carrier seat. The battery case picking part 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.

[0011] Preferably, the first automated detection line includes two first automated detection lines arranged symmetrically in a mirror image. The first appearance detection groups of the two first automated detection lines are arranged opposite to each other. The battery case rotating device is provided at the discharge end of any one of the first automated detection lines. The battery case turnover mechanism includes two transfer picking ends arranged in one-to-one correspondence with the battery case rotating device and used for performing tidal turnover switching displacement between the corresponding battery case rotating device and the second detection conveying device.

[0012] Preferably, the inner surface detection mechanism includes a number of inner surface detection ends with pivot adjustment displacement. A picking carrier frame mechanism is arranged on the detection displacement robotic arm. A number of bottom wall picking ends arranged in one-to-one correspondence with the inner surface detection ends are arranged on the picking carrier frame mechanism. A number of the bottom wall picking ends have interlocked rotational detection displacement. The turning-over turnover mechanism includes a turning-over part and an abutting and limiting part. The turning-over part and the abutting and limiting part are respectively arranged on both sides of the battery case conveyor belt and are arranged opposite to each other. The abutting and limiting part includes a number of pushing abutting and limiting ends with horizontal linear displacement, the number of which is the same as that of the bottom wall picking ends. The turning-over part includes a turning-over carrier frame with 180° turning-over displacement. A turning-over negative pressure adsorption end for adsorbing the second side wall surface is arranged on the turning-over carrier frame and is in one-to-one correspondence and cooperation with the pushing abutting and limiting ends.

[0013] Preferably, the turning-over part includes a receiving material carrier frame. A transfer bearing part for receiving the battery case on the turning-over negative pressure adsorption end is arranged on the receiving material carrier frame and is in one-to-one correspondence with the turning-over negative pressure adsorption end. A floating seat base with floating displacement is arranged on the transfer bearing part.

[0014] Preferably, the battery housing buffering device includes a plurality of reset and flipping mechanisms provided corresponding to the bottom wall picking ends one by one, and a plurality of battery housing buffering seats provided corresponding to the reset and flipping mechanisms one by one; The reset and flipping mechanism includes a reset and flipping negative pressure adsorption end with a 180° flipping displacement for adsorbing the first side wall surface.

[0015] Preferably, two sets of the inner surface detection devices are provided on both sides of the battery housing conveyor belt and are arranged oppositely; The discharging and sorting conveyor mechanism includes two sorting and discharging transfer and picking ends provided corresponding to the battery housing buffering device one by one.

[0016] Preferably, the battery housing overall appearance detection device is arranged at the discharging end of the battery housing cleaning device. The feeding end of the first automated detection line is provided with a feeding conveyor belt arranged oppositely to the discharging end of the battery housing cleaning device. The loading station is arranged on the feeding conveyor belt, and a battery housing positioning mechanism is arranged on the feeding conveyor belt corresponding to the loading station.

[0017] The present invention also proposes a detection method for the battery housing overall appearance detection device, which is characterized by including the following steps: The battery housing is loaded onto the loading station, the open end of the battery housing faces upwards, and the second side wall surface of the battery housing faces the battery housing rotating device; The switching position conveyor mechanism picks up the battery housing on the loading station and steps to switch positions to the supporting position, and sequentially performs detections through the first appearance detection group. After the battery housing support seat on the supporting position rotates the battery housing by 180° to change the surface, the switching position conveyor mechanism picks up the battery housing on the supporting position and steps to switch positions to the battery housing rotating device, and sequentially performs detections through the first appearance detection group; The steering drive source of the battery housing rotating device performs a 90° rotation drive on the rotating support platform, and the first side wall surface of the battery housing on the rotating support platform faces the conveying direction of the battery housing conveyor belt; The battery housing turnover mechanism picks up the battery housing on the rotating support platform and conveys it to the battery housing conveyor belt. The battery housing runs on the battery housing conveyor belt and is detected by the two second appearance detection groups, and then is positioned relative to the position of the inner surface detection mechanism. The turning and turnover mechanism picks up the battery housing on the battery housing conveyor belt and performs a 180° flip so that the bottom wall surface of the battery housing faces upwards. The detection displacement robotic arm picks up the battery housing and performs an inner five-face displacement detection with the open end of the battery housing facing the inner surface detection mechanism. After the detection is completed, the battery housing is placed on the battery housing buffering device; The discharging and sorting conveyor mechanism transfers the battery housing on the battery housing buffering device to the sorting conveyor line according to the detection results.

[0018] The beneficial effects of the present invention are mainly reflected in: 1. Meeting the comprehensive appearance inspection requirements of the battery housing.

[0019] 2. Enabling line scanning detection of the edges and surfaces, with accurate and reliable detection results and precise classification.

[0020] 3. Operating efficiently, smoothly and stably, improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings: Figure 1 It is a schematic structural diagram of the comprehensive appearance inspection device for the battery housing of the present invention.

[0022] Figure 2 It is a schematic top view structural diagram of the comprehensive appearance inspection device for the battery housing of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the docking of the comprehensive appearance inspection device for the battery housing of the present invention with the battery housing cleaning device.

[0024] Figure 4 It is a schematic structural diagram of the battery housing in the present invention.

[0025] Figure 5 It is a schematic structural diagram of the switching position conveying mechanism in the present invention.

[0026] Figure 6 It is a schematic structural diagram of the bottom wall surface line scanning detection mechanism in the present invention.

[0027] Figure 7 It is a schematic structural diagram of the first side wall surface line scanning detection mechanism in the present invention.

[0028] Figure 8 It is a schematic structural diagram of the first horizontal chamfer edge detection mechanism in the present invention.

[0029] Figure 9 It is a schematic structural diagram of the battery housing rotating device in the present invention.

[0030] Figure 10 It is a schematic structural diagram of the battery housing turnover mechanism in the present invention.

[0031] Figure 11 It is a schematic structural diagram of the battery housing conveyor belt in the present invention.

[0032] Figure 12 It is a schematic structural diagram of the second horizontal chamfer edge detection mechanism in the present invention.

[0033] Figure 13 It is a schematic structural diagram of the second side wall surface line scan detection mechanism in the present invention.

[0034] Figure 14 It is a schematic structural diagram of the first vertical chamfer edge detection mechanism and the second vertical chamfer edge detection mechanism in the present invention.

[0035] Figure 15 It is a schematic structural diagram of the open end deformation detection mechanism in the present invention.

[0036] Figure 16 It is a schematic structural diagram of the turnover mechanism for turning over in the present invention.

[0037] Figure 17 It is a schematic structural diagram of the inner surface detection mechanism and the detection displacement robotic arm in the present invention.

[0038] Figure 18 It is a schematic structural diagram of the battery case buffer device in the present invention.

[0039] Figure 19 It is a schematic structural diagram of the unloading and sorting conveyor mechanism in the present invention.

[0040] Figure 20 It is a schematic structural diagram of the feeding conveyor belt in the present invention. Detailed implementation manners

[0041] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] The following further elaborates on the present application with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention and are not intended to limit the invention. Additionally, it should be noted that for the sake of description, only parts related to the relevant invention are shown in the accompanying drawings. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0043] The present invention provides a battery case appearance comprehensive detection device, such as Figure 4As shown in the figure, the battery housing 1 is a rectangular housing with an open end 10. The outer surface of the rectangular housing includes two relatively arranged first side wall surfaces 11, two relatively arranged second side wall surfaces 12, and a bottom wall surface 13 opposite to the open end. The area of the first side wall surface 11 is larger than that of the second side wall surface 12. There is a vertical chamfer edge 14 between the first side wall surface 11 and the second side wall surface 12, a first horizontal chamfer edge 15 between the first side wall surface 11 and the bottom wall surface, and a second horizontal chamfer edge 16 between the second side wall surface and the bottom wall surface.

[0044] When visually inspecting the traditional battery housing 1, only the inner five surfaces and the outer five surfaces are inspected, and the automation design uses a robotic arm for the detection of relative position adjustment. First, it cannot meet the detection requirements of the chamfer edges. In addition, the automated turnover and programming control of the product are very cumbersome and cannot meet the relatively smooth surface detection requirements.

[0045] As Figures 1 to 20 shown in the figure, the comprehensive battery housing appearance inspection device includes a first automated inspection device 100, a battery housing rotation device 2, a second automated inspection device 200, and a sorting and discharging device 3 arranged in sequence along the production line direction.

[0046] As Figures 1 to 3 shown in the figure, the first automated inspection device 100 includes at least one first automated inspection line 4. The first automated inspection line 4 includes a battery housing step-by-step conveying device 41 and a first appearance inspection group 42. The battery housing 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 housing rotation device. The switching position conveying mechanism 411 includes a number of battery housing picking parts 4110 for sequentially switching the battery housing turnover positions between the loading station, the support position, and the battery housing rotation device. A battery housing support seat for supporting the bottom wall surface is provided on the support position 413, and the battery housing support seat has a 180° rotational displacement. The first appearance inspection group 42 includes a bottom wall surface line scan inspection mechanism 421, a first side wall surface line scan inspection mechanism 422, and a first horizontal chamfer edge inspection mechanism 423. A bottom wall surface line scan inspection mechanism, a first side wall surface line scan inspection mechanism, and a horizontal chamfer edge inspection mechanism are provided on the path from the loading station to the support position. A first side wall surface line scan inspection mechanism and a first horizontal chamfer edge inspection mechanism are provided on the path from the support position to the battery housing rotation device.

[0047] As Figure 1 、 Figure 2 、 Figure 9 shown in the figure, the battery housing rotation device 2 includes a rotation support platform 21 and a steering drive source 22 for driving the rotation support platform to perform a 90° rotational displacement.

[0048] As Figures 1 to 3As shown in the figure, the second automated detection device 200 includes a second detection conveyor device 5, a second appearance detection group 6, an inner surface detection device 7, and a battery case turnover mechanism 8 for turning over the battery case between the rotary support stage and the second detection conveyor device. The second detection conveyor device 5 includes a battery case conveyor belt 51 for linearly conveying the battery case. The second appearance detection group 6 includes a second horizontal chamfer edge detection mechanism 61, a second side wall surface line scan detection mechanism 62, a first vertical chamfer edge detection mechanism 63, and a second vertical chamfer edge detection mechanism 64. The second appearance detection group is provided on any side of the battery case conveyor belt 5. On the conveying path of the battery case conveyor belt, there is an open end deformation detection mechanism 52 for detecting the deformation of the open end. The inner surface detection device 7 includes a turnover mechanism 71 for picking up the battery case on the battery case conveyor belt and turning over the open end, an inner surface detection mechanism 72 for performing inner surface detection, a detection displacement robotic arm 73 for picking up the battery case on the turnover mechanism and performing relative cooperative detection displacement with the inner surface detection mechanism, and a battery case buffer device 74 for receiving the battery case after the detection is completed.

[0049] The classification and discharging device 3 includes a number of classification conveyor lines 31 and a discharging and classification conveyor mechanism 32 for turning over the battery case between the battery case buffer device and any classification conveyor line.

[0050] Specific implementation process and principle description: The battery case 1 is fed from the front end to the loading station 412, and several battery case picking parts 4110 of the switching position conveyor mechanism 411 perform step-by-step conveying of the battery case 1 at the switching position. The battery case 1 passes through the loading station and the support position in sequence and finally enters the battery case rotating device.

[0051] During the turnover process of the battery case 1 from the loading station to the support position, it is respectively detected by the bottom wall surface line scan detection mechanism 421, the first side wall surface line scan detection mechanism 422, and the first horizontal chamfer edge detection mechanism 423. In this detection, the battery case 1 is in a suspended displacement state, which can meet the detection operation requirements of the line scan.

[0052] When the battery case 1 falls onto the support position, after the battery case support seat rotates 180°, when running from the support position to the battery case rotating device, after changing the surface, it passes through the first side wall surface line scan detection mechanism and the first horizontal chamfer edge detection mechanism to realize the detection of the corresponding parts. Magnetic adsorption or negative pressure adsorption can be set on the battery case support seat to ensure the stability of the battery case during transfer.

[0053] It should be noted that in traditional bottom support type conveying, there are detection dead angles on the first side wall surface and the first horizontal chamfer edge, that is, there are situations such as incomplete acquisition of images. By adopting the method of step-by-step switching of workstations, suspended displacement drive can be realized, thus meeting the detection requirements.

[0054] Among them, the bottom wall surface line scan detection mechanism 421 and the first side wall surface line scan detection mechanism 422 realize line scan detection of opposite surfaces, while the first horizontal chamfer edge realizes line scan or fixed-point full image acquisition detection.

[0055] Finally, when the battery case rotating device is in operation, the rotation support stage 21 is driven by the steering drive source 22 to rotate by 90°, so that the orientation of the second side wall surface is adjusted. Magnetic adsorption or negative pressure adsorption can be set on the rotation support stage 21 to ensure the stability after the battery case is carried.

[0056] When the second automatic detection device 200 is in operation, the battery case turnover mechanism 8 picks up the battery case on the battery case rotating device and conveys it to the battery case conveyor belt 51. The battery case runs along with the battery case conveyor belt 51, and it passes through the open end deformation detection mechanism 52, the second horizontal chamfer edge detection mechanism 61, the second side wall surface line scan detection mechanism 62, the first vertical chamfer edge detection mechanism 63, and the second vertical chamfer edge detection mechanism 64 to realize the detection of their respective mechanisms.

[0057] It should be noted that the battery case is arranged on the battery case conveyor belt 51, and the second horizontal chamfer edge of the battery case is exposed relative to the battery case conveyor belt 51. In this way, the detection requirements of the second side wall surface and the second horizontal chamfer edge are met, and no obstruction will be caused.

[0058] The structure of the battery case conveyor belt 51 is described. It adopts three parallel and spaced circulating belts. Among them, the circulating belts are provided with evenly spaced protrusions. The protrusion positions on the two side circulating belts correspond to each other one by one, and the protrusions on the middle circulating belt are misaligned with the protrusion positions on any side circulating belt. A limiting space for the battery case is formed between the two corresponding protrusions on the two side circulating belts and the protrusions on the middle circulating belt.

[0059] The open end deformation detection mechanism 52 is as Figure 15 shown. It uses the method of an image acquisition end and an annular supplementary light source for deformation detection. The detection of the second horizontal chamfer edge detection mechanism 61, the second side wall surface line scan detection mechanism 62, the first vertical chamfer edge detection mechanism 63, and the second vertical chamfer edge detection mechanism 64 is similar to that of the first horizontal chamfer edge detection mechanism and the first side wall surface line scan 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 Figure 14As shown, a common carrier is used for carrying, and both the first vertical chamfer edge detection mechanism 63 and the second vertical chamfer edge detection mechanism 64 have pivot yaw displacements in the horizontal and vertical directions, thus meeting the detection requirements for adjusting the relative position to suit battery cases of different specifications.

[0060] After all the outer surfaces are detected, the inner surface of the battery case is detected by the inner surface detection device 7. Specifically, the turnover mechanism 71 picks up the battery case on the battery case conveyor belt 51 and turns it over and then docks with the detection displacement robotic arm 73. After the detection displacement robotic arm 73 picks up the bottom wall surface of the battery case, it moves to a position where the open end faces the inner surface detection mechanism 72. At this time, the detection displacement robotic arm 73 adjusts the position relative to the inner surface detection mechanism 72 to meet the detection alignment for the switching positions of its inner five surfaces, realizing the inner five-surface detection. After the detection is completed, it is placed on the battery case buffer device 74.

[0061] The discharging and sorting conveyor mechanism 32 transfers the battery cases on the battery case buffer device 74 to the sorting conveyor line 31 corresponding to the detection results according to the detection and sorting.

[0062] In a specific embodiment, a number of auxiliary support positions 414 are respectively provided between the loading station 412 and the support position 413 and between the support position 413 and the battery case rotating device 2. The auxiliary support positions include auxiliary battery case support seats for supporting the bottom wall surface. The auxiliary battery case support seats can be provided with magnetic adsorption or negative pressure adsorption.

[0063] The image acquisition positions of the first side wall surface line scan detection mechanism and the first horizontal chamfer edge detection mechanism are higher than the support surface of the auxiliary battery case support seat.

[0064] The switching position conveyor mechanism 411 includes a switching position carrier 4111 with lifting displacement and horizontal displacement. A number of battery case picking parts are arranged on the switching position carrier. The battery case 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.

[0065] Specifically, in order to ensure the stability of the suspended conveying path of the battery case, the design of the auxiliary support position 414 is adopted, which can realize the transfer and pause in the middle work station, facilitating the arrangement of the detection mechanism.

[0066] The switching position conveyor mechanism 411 is realized by the switching position carrier 4111. Generally, it does not adopt a swing arm type switching work station structure. Therefore, the line scan code requires linear displacement cooperation, so it is designed in this way.

[0067] In a specific embodiment, the first automated detection line 100 includes two first automated detection lines 4 arranged symmetrically in a mirror image, and the first appearance detection groups of the two first automated detection lines are arranged opposite to each other.

[0068] The discharging end of any first automatic detection line is provided with a battery case rotating device.

[0069] The battery case turnover mechanism 8 includes two transfer and pickup ends 80 that are arranged in one-to-one correspondence with the battery case rotating device and are used for tidal turnover switching displacement between the corresponding battery case rotating device and the second detection and conveying device.

[0070] Specifically, by adopting the method of cooperating two first automatic detection lines 4 with one second detection and conveying device, the detection production line cooperation of two in parallel and one is satisfied, and the detection efficiency is improved.

[0071] Due to the adoption of the double-line cooperation, the first appearance detection group is designed unilaterally, which is convenient for the layout of the relatively cooperative production line. The two transfer and pickup ends 80 perform coordinated tidal operations, and the operation is efficient and smooth.

[0072] In a specific embodiment, the first automatic detection device includes a spare fault export conveying belt 101 arranged between the two first automatic detection lines.

[0073] Specifically, during the actual operation of the appearance detection, situations such as the failure of the rear-end mechanism may occur. Therefore, with the design of this spare fault export conveying belt 101, when the detection of this equipment fails, the front-end feeding can be exported and separated, and it can be guided to the manual detection line, so that periodic stops will not be caused.

[0074] In a specific embodiment, the inner surface detection mechanism 72 includes a number of inner surface detection ends 720 with pivot adjustment displacement. A pickup carrier mechanism 731 is arranged on the detection displacement robotic arm 73. A number of bottom wall pickup ends 732 that are arranged in one-to-one correspondence with the inner surface detection ends are arranged on the pickup carrier mechanism, and the number of bottom wall pickup ends have interlocking rotational detection displacements.

[0075] As Figure 17 shown, a rotation linkage mechanism 733 for the rotational displacement linkage of a number of bottom wall pickup ends 732 is arranged on the pickup carrier mechanism 731. Through the displacement adjustment of the pickup carrier mechanism 731, the alignment pickup position accuracy requirements of a number of bottom wall pickup ends 732 are met, and then the one-to-one orientation alignment with the inner surface detection ends 720 is carried out. After the alignment, the rotation drive of the bottom wall pickup ends 732 is realized through the rotation linkage mechanism 733, so as to adjust the displacement adjustment of the inner five-sided switching position of the battery case and meet the detection requirements of the inner five sides.

[0076] 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, which is 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.

[0077] 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, so as to meet the stable adsorption effect of the flip negative pressure adsorption end 7112. After adsorption, the push-butt limit end is linearly reset, and an avoidance space is provided at this time, and the flip carrier 7111 realizes a 180° flip.

[0078] In a specific embodiment, the flipping part 711 includes a material receiving carrier 713, on which is provided a transfer bearing part 7130 corresponding to the flipping negative pressure adsorption end and 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.

[0079] 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.

[0080] 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, and the reset flipping mechanism includes a reset flipping negative pressure adsorption end with a 180° flipping displacement for adsorbing the first side wall surface.

[0081] Specifically, when the battery shell is fed, the open end faces 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, so the reset cache design is adopted, which meets the conveying requirements with the open end facing the top.

[0082] 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 one-to-one corresponding to the battery shell buffer devices.

[0083] This makes the detection more efficient and significantly improves the detection efficiency.

[0084] In a specific embodiment, the comprehensive inspection device for the appearance of the battery housing is arranged at the discharge end of the battery housing cleaning device 300. The feeding end of the first automated inspection line is provided with a feeding conveyor belt 43 arranged opposite to the discharge end of the battery housing cleaning device. The loading station 412 is arranged on the feeding conveyor belt, and a battery housing positioning mechanism 430 is arranged on the feeding conveyor belt opposite to the loading station.

[0085] In this way, the requirements for feeding and precise positioning are met.

[0086] The inspection method of the comprehensive inspection device for the appearance of the battery housing of the present invention will be described: The battery housing is loaded onto the loading station, with the open end of the battery housing facing upwards and the second side wall surface of the battery housing facing the battery housing rotating device.

[0087] That is, it meets the docking requirements of the battery housing with the open end facing upwards after front-end cleaning.

[0088] The switching position conveying mechanism picks up the battery housing on the loading station and steps to the support position, passing through the bottom wall surface line scan inspection mechanism, the first side wall surface line scan inspection mechanism, and the first horizontal chamfer edge inspection mechanism to perform inspections on the bottom wall surface, the current first side wall surface, and the first horizontal chamfer edge. After the battery housing support on the support position rotates the battery housing by 180°, the switching position conveying mechanism picks up the battery housing on the support position and steps to the battery housing rotating device, passing through the first side wall surface line scan inspection mechanism and the first horizontal chamfer edge inspection mechanism to perform inspections on the current first side wall surface and the first horizontal chamfer edge.

[0089] The steering drive source of the battery housing rotating device drives the rotating support platform to rotate by 90°, and the first side wall surface of the battery housing on the rotating support platform faces the conveying direction of the battery housing conveyor belt.

[0090] The battery housing turnover mechanism picks up the battery housing on the rotating support platform and conveys it to the battery housing conveyor belt. The battery housing runs on the battery housing conveyor belt and passes through the open end deformation inspection mechanism and two second appearance inspection groups to perform open end inspection, two second side wall surface inspections, and four vertical chamfer edge inspections, and then reaches the position corresponding to the inner surface inspection mechanism. The turning and turnover mechanism picks up the battery housing on the battery housing conveyor belt and performs a 180° flip so that the bottom wall surface of the battery housing faces upwards. The inspection displacement robotic arm picks up the battery housing and performs an inner five-face displacement inspection of the open end of the battery housing facing the inner surface inspection mechanism. After the inspection is completed, the battery housing is placed on the battery housing buffer device.

[0091] The unloading and classification conveying mechanism transfers the battery housing on the battery housing buffer device to the classification conveyor line according to the inspection results, and completes the classification output.

[0092] As can be seen from the above description, it meets the requirements for comprehensive appearance inspection of the battery housing. It can achieve line scanning inspection of edges and surfaces, with accurate and reliable inspection results and precise classification. It operates efficiently, smoothly and stably, improving the inspection efficiency.

[0093] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, so that a process, method, article or apparatus / device comprising a series of elements includes not only those elements but also other elements not expressly listed, or also elements inherent in these processes, methods, articles or apparatus / devices.

[0094] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. An overall detection device for the appearance of a battery housing, characterized in that: It includes a first automated detection device, a battery housing rotation device, a second automated detection device, and a sorting and discharging device arranged in sequence along the production line direction; The first automated detection device includes at least one first automated detection line. The first automated detection line includes a battery housing step-by-step conveying device and a first appearance detection group. The battery housing 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 housing rotation device. The switching position conveying mechanism includes several battery housing picking parts for turning and switching positions of the battery housing. A battery housing support seat is provided on the support position, and the battery housing support seat has a 180° rotational displacement. The first appearance detection 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 housing rotation device; The battery housing rotation 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 detection device includes a second detection conveying device, a second appearance detection group, an inner surface detection device, and a battery housing turnover mechanism for turning over the battery housing between the rotating support platform and the second detection conveying device. The second detection conveying device includes a battery housing conveyor belt. The second appearance detection group is provided on any side of the battery housing conveyor belt. The inner surface detection device includes a turnover mechanism for picking up the battery housing on the battery housing conveyor belt to turn over the open end, an inner surface detection mechanism for performing inner surface detection, a detection displacement robotic arm for picking up the battery housing on the turnover mechanism to perform a detection displacement in relative cooperation with the inner surface detection mechanism, and a battery housing buffer device for receiving the battery housing after the detection is completed; The sorting and discharging device includes several sorting conveyor lines and a discharging and sorting conveyor mechanism for turning over the battery housing between the battery housing buffer device and any of the sorting conveyor lines.

2. The overall detection device for the appearance of a battery housing according to claim 1, characterized in that: The first appearance detection group includes a first side wall surface line scan detection mechanism and a first horizontal chamfer edge detection mechanism; A bottom wall surface line scan detection mechanism is also provided on the path from the loading station to the support position; The second appearance detection group includes a second horizontal chamfer edge detection mechanism, a second side wall surface line scan detection mechanism, a first vertical chamfer edge detection mechanism, and a second vertical chamfer edge detection mechanism; An open end deformation detection mechanism for detecting the deformation of the open end is provided on the conveying path of the battery housing conveyor belt.

3. The overall detection device for the appearance of a battery housing according to claim 2, characterized in that: Several auxiliary support positions are respectively provided between the loading station and the support position and between the support position and the battery housing rotation device. The auxiliary support position includes an auxiliary battery housing support seat for supporting the bottom wall surface. The imaging acquisition positions of the first side wall surface line scan detection mechanism and the first horizontal chamfer edge detection mechanism are higher than the support surface of the auxiliary battery housing support seat; The switching position conveying mechanism includes a switching position carrier seat with lifting displacement and horizontal displacement. A plurality of the battery housing picking parts are arranged on the switching position carrier seat. The battery housing picking part 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.

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

5. The battery housing appearance comprehensive detection device according to claim 2, characterized in that: The inner surface detection mechanism includes a plurality of inner surface detection ends with pivot adjustment displacement. A picking carrier mechanism is arranged on the detection displacement robotic arm. A plurality of bottom wall picking ends arranged in one-to-one correspondence with the inner surface detection ends are arranged on the picking carrier mechanism. A plurality of the bottom wall picking ends have interlocked rotational detection displacement; The turning and turnover mechanism includes a turning part and an abutting and limiting part. The turning part and the abutting and limiting part are arranged on both sides of the battery housing conveyor belt and opposite to each other. The abutting and limiting part includes a plurality of pushing and abutting limiting ends with horizontal linear displacement, the number of which is the same as that of the bottom wall picking ends. The turning part includes a turning carrier with a 180° turning displacement. A turning negative pressure adsorption end for adsorbing the second side wall surface is arranged on the turning carrier in one-to-one correspondence with the pushing and abutting limiting ends.

6. The appearance comprehensive detection device for the battery housing according to claim 5, wherein: The turning part includes a receiving material carrier. A transfer bearing part for receiving the battery housing on the turning negative pressure adsorption end is arranged on the receiving material carrier in one-to-one correspondence with the turning negative pressure adsorption end. A floating seat base with floating displacement is arranged on the transfer bearing part.

7. The battery housing appearance comprehensive detection device according to claim 5, characterized in that: The battery housing buffer device includes a plurality of reset turning mechanisms arranged in one-to-one correspondence with the bottom wall picking ends and a plurality of battery housing buffer seats arranged in one-to-one correspondence with the reset turning mechanisms; The reset turning mechanism includes a reset turning negative pressure adsorption end with a 180° turning displacement for adsorbing the first side wall surface.

8. The battery housing appearance comprehensive detection device according to claim 1, characterized in that: Two groups of the inner surface detection devices are arranged opposite to each other on both sides of the battery housing conveyor belt; The unloading and sorting conveying mechanism includes two sorting unloading transfer picking ends arranged in one-to-one correspondence with the battery housing buffer device.

9. The comprehensive appearance inspection device for the battery housing according to claim 1, wherein: The comprehensive appearance inspection device for the battery housing is arranged at the discharging end of the battery housing cleaning device. The feeding end of the first automated inspection line is provided with a feeding conveyor belt oppositely arranged with the discharging end of the battery housing cleaning device. The loading station is arranged on the feeding conveyor belt, and the battery housing positioning mechanism oppositely arranged with the loading station is provided on the feeding conveyor belt.

10. The detection method of the battery housing appearance comprehensive detection device according to any one of claims 1 to 9, characterized in that It includes the following steps: The battery housing is loaded onto the loading station, the open end of the battery housing faces the top, and the second side wall surface of the battery housing faces the battery housing rotating device. The switching position conveying mechanism picks up the battery housing on the loading station and steps to switch positions to the supporting position, and is sequentially detected through the first appearance inspection group. After the battery housing support on the supporting position rotates the battery housing by 180° to change the surface, the switching position conveying mechanism picks up the battery housing on the supporting position and steps to switch positions to the battery housing rotating device, and is sequentially detected through the first appearance inspection group. The steering drive source of the battery housing rotating device drives the rotating support platform to rotate by 90°, and the first side wall surface of the battery housing on the rotating support platform faces the conveying direction of the battery housing conveyor belt. The battery housing turnover mechanism picks up the battery housing on the rotating support platform and conveys it to the battery housing conveyor belt. The battery housing runs on the battery housing conveyor belt and is sequentially detected by the two second appearance inspection groups, and then is positioned relative to the position of the inner surface inspection mechanism. The turning and turnover mechanism picks up the battery housing on the battery housing conveyor belt and performs a 180° flip so that the bottom wall surface of the battery housing faces the top. The detection displacement robotic arm picks up the battery housing and performs an inner five-sided displacement inspection of the open end of the battery housing facing the inner surface inspection mechanism. After the inspection is completed, the battery housing is placed on the battery housing buffer device. The discharging and sorting conveying mechanism transfers the battery housing on the battery housing buffer device to the sorting conveyor line according to the inspection results.

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