A bipolar plate welding quality visual detection system and method

Abstract

This application relates to the field of lithium battery processing equipment technology, and in particular to a visual inspection system and method for bipolar plate welding quality; it includes an inspection frame and a first inspection mechanism; the first inspection mechanism includes a first inspection platform, a first scanning element, and a first moving component; the first inspection platform is slidably connected to the inspection frame, and the movement direction of the first inspection platform is the same as the length direction of the inspection frame; the first scanning element is mounted on the inspection frame via the first moving component, and the first scanning element is used to scan the bipolar plates on the first inspection platform; by adjusting the first moving component, the first moving component drives the first scanning element to move, and the first scanning element scans and inspects the bipolar plates on the first inspection platform, reducing the need for subsequent reprocessing of defective bipolar plates, thereby reducing the waste of processing raw materials, and at the same time, to a certain extent, helping to improve the quality of bipolar plate processing.

Description

Technical Field

[0001] This application relates to the field of lithium battery processing equipment technology, and in particular to a visual inspection system and method for bipolar plate welding quality. Background Technology

[0002] The main functions of bipolar plates in fuel cells are to distribute reactant gases, conduct electricity and heat, and support membrane electrodes. Bipolar plates are the skeleton and foundation of fuel cells, and their quality determines the performance of fuel cells. Therefore, the quality of bipolar plates is particularly important in the manufacturing of fuel cells.

[0003] In related technologies, the production process of metal bipolar plates mainly includes a stamping stage, a welding stage, a coating stage, and a sealing stage. The stamping stage involves placing the bipolar plate raw material on a stamping platform and using a stamping die to process the flow field, three-cavity opening, and some auxiliary structures onto the raw material. Simultaneously, cutting equipment is used to remove burrs and excess material from the cavities. The welding stage involves transporting the stamped bipolar plates to a welding platform and welding them using a laser welding system. The cleaning stage involves ultrasonically cleaning the surface of the bipolar plates with pure water after welding to remove impurities. The coating stage involves applying a coating to the surface of the bipolar plates using a sputtering method. The sealing stage involves sealing the coated bipolar plates and performing inspection to complete the bipolar plate processing.

[0004] The aforementioned technologies have the following technical defects: after the bipolar plates are welded, there are processing defects in the welded bipolar plates during subsequent reprocessing, which leads to a waste of processing materials when reprocessing the bipolar plates with processing defects. Summary of the Invention

[0005] To reduce material waste during reprocessing after bipolar plate welding, this application provides a visual inspection system and method for bipolar plate welding quality.

[0006] Firstly, this application provides a visual inspection system for bipolar plate welding quality, which adopts the following technical solution:

[0007] A visual inspection system for bipolar plate welding quality includes an inspection frame and a first inspection mechanism;

[0008] The first testing mechanism includes a first testing platform, a first scanning component, and a first moving component;

[0009] The first detection platform is slidably connected to the detection frame, and the direction of movement of the first detection platform is the same as the length direction of the detection frame.

[0010] The first scanning element is mounted on the detection frame via the first moving component, and the first scanning element is used to scan the bipolar plate on the first detection platform;

[0011] The first moving component is used to drive the first scanning element to move.

[0012] By adopting the above technical solution, the bipolar plate after welding moves to the first inspection platform, driving the first inspection platform to move. When the first inspection platform reaches the inspection position, the first moving component is adjusted, and the first moving component drives the first scanning component to move. The first scanning component scans and inspects the weld of the bipolar plate and sends the scanned status to the processing system for judging the welding condition. By adjusting the first moving component, which drives the first scanning component to move, the first scanning component scans and inspects the bipolar plate on the first inspection platform, the need for subsequent reprocessing of defective bipolar plates is reduced, thereby reducing the waste of processing materials. At the same time, it helps to improve the quality of bipolar plate processing to a certain extent.

[0013] Optionally, the first moving component includes a moving frame, a moving ball screw, a moving motor, and a moving slider;

[0014] The movable frame is mounted on the detection frame;

[0015] The movable ball screw is rotatably connected to the movable frame, wherein the axial direction of the movable ball screw is perpendicular to the movement direction of the first detection platform and is the same as the weld length between the two bipolar plates.

[0016] The movable slider is threadedly connected to the movable ball screw and slidably connected to the movable frame; the first scanning component is connected to the movable slider.

[0017] The mobile motor is mounted on the mobile frame and connected to the mobile ball screw, and is used to drive the mobile ball screw to rotate.

[0018] By adopting the above technical solution, the moving motor is adjusted, which drives the moving ball screw to rotate. The moving ball screw rotates on the moving frame, and the rotation of the moving ball screw drives the moving slider to move. The moving slider slides on the moving frame, and the moving slider drives the first scanning component to move, thereby realizing the detection of the weld on the bipolar plate.

[0019] Optionally, it also includes a motion component for driving the first detection platform to move on the detection frame;

[0020] The motion component includes two sets of power components, which are connected to the detection frame, and there is a gap between the two sets of power components.

[0021] The power components include a rotating roller, a moving belt, and a moving motor;

[0022] The moving roller is rotatably connected to the detection frame, and the axial direction of the moving roller is perpendicular to the length direction of the detection frame.

[0023] The motion belt is wound around the motion roller, and the first detection platform is connected to the motion belt;

[0024] The motion motor is mounted on the detection frame and is connected to the motion roller to drive the motion roller to rotate.

[0025] By adopting the above technical solution, the motion motor is adjusted, which drives the motion roller to rotate. The motion roller rotates on the detection frame, and the rotation of the motion roller drives the motion belt to move. The movement of the motion belt drives the first detection platform to move on the detection frame. The first detection platform moves on the detection frame. By adjusting the motion motor, the motion roller rotates, and the movement of the motion roller drives the motion belt to move, thereby achieving the purpose of driving the first detection platform to move on the detection frame, and thus achieving the purpose of moving the first detection platform to the scanning detection position.

[0026] Optionally, the testing frame is provided with a limiting member for restricting the first testing platform;

[0027] The limiting component includes a limiting block and a driving source;

[0028] The limiting block is rotatably connected to the detection frame, and the rotation axis of the limiting block and the detection frame is the same as the axial direction of the moving roller, and the limiting block can abut against the first detection platform;

[0029] The drive source is located on the detection frame and connected to the limiting block, and is used to drive the limiting block to move closer to or further away from the first detection platform.

[0030] By adopting the above technical solution, adjusting the drive source causes it to move, which in turn moves the limiting block. The limiting block approaches the first detection platform, comes into contact with it, and abuts against it, thus restricting the first detection platform to the detection frame. Adjusting the drive source causes the limiting block to move, bringing it closer to the first detection platform and restricting it, thereby fixing the first detection platform at the detection position. Simultaneously, in conjunction with the scanning component, this facilitates precise scanning and detection of the bipolar plate, improving the accuracy of bipolar plate detection.

[0031] Optionally, a second detection mechanism for detecting the other side of the bipolar plate may also be included;

[0032] The second testing mechanism includes a second testing platform, a second scanning component, a second motion component, and a second moving component;

[0033] The second detection platform is slidably connected to the detection frame via the second motion component, located on one side of the first detection platform, and the first detection platform can move to directly above the second detection platform; the second motion component is used to drive the second detection platform to move.

[0034] The second scanning component is mounted on the detection frame via the second moving component and is used to detect the weld of the bipolar plate on the second detection platform. The second moving component is used to drive the second scanning component to move.

[0035] The first moving component and the second moving component, the first motion component and the second motion component, and the first scanning component and the second scanning component have the same structure.

[0036] By adopting the above technical solution, after the scanning of one side of the bipolar plate is completed, the motion belt continues to drive the first detection platform to move. The first detection platform is adjusted and moves to the second detection platform. The bipolar plate falls onto the second detection platform, exposing the other side of the bipolar plate. The second motion component drives the second detection platform to move. The second detection platform moves on the detection frame and moves to the detection position. The second moving component is adjusted and drives the second scanning component to move. The second scanning component moves and detects the weld on the other side of the bipolar plate, thereby achieving comprehensive detection of the bipolar plate weld and helping to improve the subsequent processing quality of the bipolar plate.

[0037] Optionally, it also includes a flipping component for driving the first detection platform to be directly above the second detection platform;

[0038] The flipping assembly includes a flipping rod and a flipping motor;

[0039] The flipping rod is rotatably connected to the detection frame, and the axial direction of the flipping rod is perpendicular to the length direction of the detection frame.

[0040] The flipping motor is mounted on the detection frame and connected to the flipping rod, and is used to drive the flipping rod to rotate.

[0041] The flipping rod is an electromagnet and can be attracted to the first detection platform.

[0042] By adopting the above technical solution, the first motion component drives the first detection platform to move, the first detection platform moves close to the flipping rod, the flipping rod is energized, the flipping rod attracts the first detection platform, the flipping rod is fixed to the first detection platform, the flipping motor is adjusted, the flipping motor moves, the flipping motor drives the flipping rod to move, the first detection platform flips, and drives the bipolar plate to move to the second detection platform; by energizing the flipping rod, the flipping rod generates magnetic force, the flipping rod attracts and fixes to the first detection platform, the flipping motor drives the flipping rod to move, the flipping rod drives the first detection platform to move above the second detection platform, thereby achieving the purpose of flipping the bipolar plate to the second detection platform, thus facilitating the inspection of the weld on the other side of the bipolar plate.

[0043] Optionally, the flipping rod has a stabilizing groove on the side near the first detection platform, the first detection platform extends into the stabilizing groove and is slidably connected to the flipping rod.

[0044] By adopting the above technical solution, the first detection platform moves close to the flipping rod, the first detection platform extends into the stabilizing groove, the flipping rod is energized, and the flipping rod and the first detection platform are attracted and fixed together; by setting the stabilizing groove on the flipping rod, the first detection platform extends into the stabilizing groove, and the first detection platform and the flipping rod are attracted and fixed together, further improving the stability of the connection between the first detection platform and the flipping rod.

[0045] Optionally, the first detection mechanism further includes an adsorption plate for adsorbing the bipolar plate to the first detection platform;

[0046] The first detection platform is provided with adsorption holes; the adsorption disk is disposed in the adsorption holes, and the adsorption disk is used to stabilize the bipolar plate on the first detection platform.

[0047] By adopting the above technical solution, when the bipolar plate moves to the first detection platform, the adsorption disk is adjusted, and the adsorption disk adsorbs the bipolar plate, fixing the bipolar plate on the first detection platform; by adjusting the adsorption disk, the adsorption disk generates suction, and the adsorption disk contacts the bipolar plate, thereby achieving the purpose of fixing the bipolar plate on the detection platform.

[0048] Optionally, it may also include multiple third scanners for detecting the sides of the bipolar plate;

[0049] The third scanning element is respectively disposed on the first detection platform and the second detection platform for scanning and detecting the sidewalls of the bipolar plate.

[0050] By adopting the above technical solution, the bipolar plate is flipped onto the second detection platform, and the third scanning element is adjusted to scan and detect the side wall of the bipolar plate. By adjusting the third scanning element, the third scanning element detects the side of the bipolar plate, realizing comprehensive detection of the bipolar plate, further improving the detection quality of the bipolar plate, and at the same time, further reducing the waste of processing materials when reprocessing defective bipolar plates.

[0051] On the other hand, a visual inspection method for bipolar plate welding quality includes the following operating steps:

[0052] S1: The bipolar plate to be tested is in place;

[0053] S11: Place the bipolar plate to be tested: Place the bipolar plate on the first testing platform, adjust the bipolar plate, and place the weld seam of the two bipolar plates perpendicular to the length direction of the testing frame. Adjust the adsorption plate, and the adsorption plate will fix the bipolar plate on the first testing platform.

[0054] S12: The first detection platform moves to the detection position: Adjust the motion motor, the motion motor moves and drives the motion roller to move, the motion roller rotates and drives the motion belt to move, the motion belt drives the first detection platform to move, and the first detection platform drives the bipolar plate to move to the detection position.

[0055] S13: When the first detection platform moves to the detection position, the drive source is adjusted. The drive source moves and drives the limiting block to move. The limiting block moves closer to the first detection platform and restricts the first detection platform. The first detection platform is fixed and restricted at the detection position.

[0056] S2: Inspect one side of the bipolar plate; adjust the moving motor, the moving motor drives the moving ball screw to move, the moving ball screw rotates on the moving frame, the rotation of the moving ball screw drives the moving slider to move, the movement of the moving slider drives the scanning component to move, and the scanning component scans and inspects the weld between the two bipolar plates.

[0057] S3: Removal of Defective Bipolar Plates: When the welding quality of the bipolar plates is defective, the first inspection platform continues to move forward, and the second inspection platform moves backward, creating a distance between the second inspection platform and the flipping rod. The flipping rod is energized and generates magnetism, attracting the first inspection platform. The flipping motor is adjusted, causing it to move, which in turn drives the flipping rod to move, which in turn drives the first inspection platform to move. At this point, the adsorption plate is adjusted, separating it from the bipolar plate. The defective bipolar plates fall under the inspection frame through the distance between the flipping rod and the second inspection platform.

[0058] S4: Inspection on the other side of the bipolar plate: When the weld of the bipolar plate passes the inspection, the second inspection platform approaches the flipping rod. The movement of the flipping rod drives the first inspection platform to move. When the first inspection platform moves above the second inspection platform, the adsorption plate is adjusted, the bipolar plate separates from the adsorption plate, and the bipolar plate falls onto the second inspection platform. The second inspection platform continues to move on the inspection frame until it reaches the inspection point, where the weld on the other side of the bipolar plate is inspected. Unqualified bipolar plates are manually removed and collected.

[0059] In summary, this application includes at least one of the following beneficial technical effects:

[0060] 1. This application adjusts the first moving component, which drives the first scanning component to move. The first scanning component scans and detects the bipolar plates on the first detection platform, reducing the need for subsequent reprocessing of defective bipolar plates, thereby reducing the waste of processing materials. At the same time, it helps to improve the quality of bipolar plate processing to a certain extent.

[0061] 2. This application adjusts the driving source, which drives the limiting block to move closer to the first detection platform. The limiting block restricts the first detection platform, thereby fixing the first detection platform at the detection position. At the same time, in conjunction with the scanning component, it facilitates accurate scanning and detection of the bipolar plate, thus improving the accuracy of bipolar plate detection.

[0062] 3. This application achieves the purpose of flipping the bipolar plate to the second detection platform by energizing the flipping rod, which generates magnetic force after being energized, and the flipping rod attracts and fixes to the first detection platform. The flipping motor drives the flipping rod to move, and the flipping rod drives the first detection platform to move to the second detection platform, thereby facilitating the detection of the weld on the other side of the bipolar plate. Attached Figure Description

[0063] Figure 1 This is a schematic diagram of the structure of a visual inspection system for bipolar plate welding quality according to this application;

[0064] Figure 2 This is a schematic diagram of the structure of the first moving component of this application;

[0065] Figure 3 yes Figure 1 Enlarged view of part A;

[0066] Figure 4 yes Figure 1 Enlarged view of part B;

[0067] Figure 5 This is a schematic diagram of the structure of a bipolar plate welding quality visual inspection system in a flipped state according to this application;

[0068] Figure 6This is a schematic diagram of the structure of a bipolar plate welding quality visual inspection system in the second flip state according to this application.

[0069] Reference numerals: 1. Detection frame; 2. First detection mechanism; 21. First detection platform; 211. Restriction groove; 212. Adsorption hole; 22. First scanning component; 23. First moving component; 231. Moving frame; 232. Moving ball screw; 233. Moving motor; 234. Moving slider; 24. Adsorption plate; 3. First motion component; 31. Power component; 311. Moving roller; 312. Moving belt; 313. Moving motor; 4. Limiting component; 41. Restricting block; 42. Drive source; 5. Second detection mechanism; 51. Second detection platform; 52. Second scanning component; 53. Second motion component; 54. Second moving component; 6. Tilting component; 61. Tilting rod; 611. Stabilizing groove; 62. Tilting motor; 7. Third scanning component. Detailed Implementation

[0070] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0071] This application discloses a visual inspection system and method for bipolar plate welding quality.

[0072] Example 1:

[0073] Reference Figure 1 A visual inspection system for bipolar plate welding quality includes an inspection frame 1, a first inspection mechanism 2, and a second inspection mechanism 5. The first inspection mechanism 2 is installed on the inspection frame 1 and is used to inspect the weld on one side of the bipolar plate. The second inspection mechanism 5 is installed on the inspection frame 1 and is located on one side of the first inspection mechanism 2. It is used to inspect the weld on the other side of the bipolar plate.

[0074] Reference Figure 1 , Figure 2 The first testing mechanism 2 includes a first testing platform 21, a first scanning element 22, and a first moving component 23. The first testing platform 21 is slidably connected to the testing frame 1, wherein the movement direction of the first testing platform 21 is the same as the length direction of the testing frame 1. The first scanning element 22 is mounted on the testing frame 1 through the moving component, and the first scanning element 22 is used to scan the bipolar plate on the first testing platform 21. The moving component is used to drive the first scanning element 22 to move.

[0075] Reference Figure 1 , Figure 2The first moving component 23 includes a moving frame 231, a moving ball screw 232, a moving motor 233, and a moving slider 234. The moving frame 231 is fixed to the detection frame 1 by bolts. The moving ball screw 232 is rotatably connected to the moving frame 231, wherein the axial direction of the moving ball screw 232 is perpendicular to the movement direction of the first detection platform 21, and the axial direction of the moving ball screw 232 is the same as the weld length between the two bipolar plates. The moving slider 234 is threadedly connected to the moving ball screw 232 and is slidably connected to the moving frame 231. The first scanning component 22 is fixedly connected to the moving slider 234 by self-tapping screws. The housing of the moving motor 233 is fixed to the moving frame 231 by bolts. The output shaft of the moving motor 233 is coaxially fixedly connected to the moving ball screw 232, and the moving motor 233 is used to drive the moving ball screw 232 to rotate.

[0076] Reference Figure 1 In this embodiment of the application, in order to improve the detection efficiency of bipolar plates, a first motion component 3 is also included to drive the first detection platform 21 to move on the detection frame 1. The first motion component 3 includes two sets of power components 31, which are connected to the detection frame 1 and form a gap between them. The power components 31 are used to drive the first detection platform 21 to move on the detection frame 1.

[0077] Reference Figure 1 The power component 31 includes a rotating roller 311, a moving belt 312, and a moving motor 313. The rotating roller 311 is rotatably connected to the detection frame 1, and the axial direction of the rotating roller 311 is perpendicular to the length direction of the detection frame 1. The moving belt 312 is wound around the rotating roller 311, and the first detection platform 21 is fixedly connected to the moving belt 312 by bolts. The housing of the moving motor 313 is fixed to the detection frame 1 by bolts, and the moving motor 313 is coaxially fixedly connected to the rotating roller 311. The moving motor 313 is used to drive the rotating roller 311 to rotate.

[0078] Reference Figure 1 , Figure 3 In this embodiment, to restrict the first detection platform 21 at the detection position, a limiting member 4 for restricting the first detection platform 21 is installed on the detection frame 1; in this embodiment, the limiting member includes a limiting block 41 and a driving source 42; the limiting block 41 is rotatably connected to the detection frame 1, the rotation axis of the limiting block 41 and the detection frame 1 is the same as the axial direction of the moving roller 311, and the limiting block 41 can abut against the first detection platform 21; the driving source 42 is installed on the detection frame 1, the driving source 42 is connected to the limiting block 41, and the driving source 42 is used to drive the limiting block 41 to move closer to or away from the first detection platform 21.

[0079] Reference Figure 3 In this embodiment, the driving source 42 is preferably a driving cylinder. The base of the driving cylinder is fixed to the detection frame 1 by bolts, and the piston rod of the driving cylinder is fixedly connected to the limiting block 41. The piston rod of the driving cylinder is perpendicular to the movement direction of the first detection platform 21.

[0080] Reference Figure 1 Furthermore, in order to improve the restriction effect on the first detection platform 21, in this embodiment of the application, a restriction groove 211 is provided on the side of the first detection platform 21 near the restriction block 41, and the restriction block 41 can extend into the restriction groove 211 and slide in connection with the first detection platform 21.

[0081] Reference Figure 1 The second detection mechanism 5 includes a second detection platform 51, a second scanning element 52, a second motion component 53, a second moving component 54, and a flipping component 6. The second detection platform 51 is slidably connected to the detection frame 1 via the second motion component 53. The second detection platform 51 is located on one side of the first detection platform 21, and the first detection platform 21 can move to directly above the second detection platform 51 via the flipping component 6. The second motion component 53 is used to drive the second detection platform 51 to move. The second scanning element 52 is mounted on the detection frame 1 via the second moving component 54. The second scanning element 52 is used to detect the weld seam of the bipolar plate on the second detection platform 51, and the second moving component 54 is used to drive the second scanning element 52 to move. In the embodiments of this application, the structures of the first moving component 23 and the second moving component 54, the first motion component 3 and the second motion component 53, and the first scanning element 22 and the second scanning element 52 are the same. The structures of the second scanning element 52, the second moving component 54, and the second motion component 53 will not be described in detail here.

[0082] Reference Figure 1 , Figure 4 To quickly move the first detection platform 21 to the second detection platform 51, this embodiment further includes a flipping assembly 6 for driving the first detection platform 21 directly above the second detection platform 51. The flipping assembly 6 includes a flipping rod 61 and a flipping motor 62. The flipping rod 61 is rotatably connected to the detection frame 1, and the axial direction of the flipping rod 61 is perpendicular to the length direction of the detection frame 1. The housing of the flipping motor 62 is fixed to the detection frame 1 by bolts, and the flipping motor 62 is coaxially fixedly connected to the flipping rod 61. The flipping motor 62 is used to drive the flipping rod 61 to rotate. In this embodiment, the flipping rod 61 is an electromagnet and can be attracted to the first detection platform 21.

[0083] Reference Figure 4Furthermore, to improve the fixing effect between the flipping rod 61 and the first detection platform 21, a stabilizing groove 611 is provided on the side of the flipping rod 61 near the first detection platform 21. The first detection platform 21 extends into the stabilizing groove 611 and is slidably connected to the flipping rod 61.

[0084] Reference Figure 4 , Figure 5 , Figure 6 Furthermore, to reduce the possibility of the bipolar plate falling off when the first detection platform 21 is flipped, in this embodiment of the application, the first detection mechanism 2 further includes an adsorption disk 24 for adsorbing the bipolar plate to the first detection platform 21; an adsorption hole 212 is provided on the first detection platform 21; the adsorption disk 24 is installed in the adsorption hole 212, and the adsorption disk 24 is used to stabilize the bipolar plate on the first detection platform 21.

[0085] Reference Figure 6 It should be noted that the number of adsorption holes 212 can be two, three or four. In this embodiment, the number of adsorption holes 212 is not specifically limited, as long as the bipolar plate can be fixed on the first detection platform 21. In this embodiment, in order to improve the fixing effect of the bipolar plate, the number of adsorption holes 212 is set to four, and the four adsorption holes 212 are evenly distributed on the first detection platform 21.

[0086] Reference Figure 5 Meanwhile, in order to improve the detection effect of bipolar plates and reduce the phenomenon of side damage to bipolar plates during welding, this embodiment of the application also includes a plurality of third scanning elements 7 for detecting the side of the bipolar plates; the third scanning elements 7 are respectively installed on the first detection platform 21 and the second detection platform 51 for scanning and detecting the sidewall of the bipolar plates.

[0087] Example 2:

[0088] A visual inspection method for bipolar plate welding quality includes the following operating procedures:

[0089] S1: The bipolar plate to be tested is in place;

[0090] S11: Place the bipolar plate to be tested: Place the bipolar plate on the first testing platform 21, adjust the bipolar plate, and place the weld seam of the two bipolar plates perpendicular to the length direction of the testing frame 1. Adjust the adsorption plate 24, and the adsorption plate 24 fixes the bipolar plate on the first testing platform 21.

[0091] S12: The first detection platform 21 moves to the detection position: Adjust the motion motor 313, the motion motor 313 moves the motion belt 312 to move the motion roller 311, the motion roller 311 rotates and drives the motion belt 312 to move, the motion belt 312 drives the first detection platform 21 to move, the first detection platform 21 drives the bipolar plate to move to the detection position.

[0092] S13: When the first detection platform 21 moves to the detection position, the drive source 42 is adjusted. The drive source 42 moves and drives the limiting block 41 to move. The limiting block 41 moves closer to the first detection platform 21 and restricts the first detection platform 21. The first detection platform 21 is fixed and restricted at the detection position.

[0093] S2: Inspect one side of the bipolar plate; adjust the moving motor 233, the moving motor 233 drives the moving ball screw 232 to move, the moving ball screw 232 rotates on the moving frame 231, the rotation of the moving ball screw 232 drives the moving slider 234 to move, the movement of the moving slider 234 drives the scanning component 312 to move, and the scanning component scans and inspects the weld between the two bipolar plates;

[0094] S3: Removal of unqualified bipolar plates: When the welding quality of the bipolar plates is unqualified, the first detection platform 21 continues to move forward, and the second detection platform 51 moves backward, so that there is a distance between the second detection platform 51 and the flipping rod 61. The flipping rod 61 is energized and generates magnetism, and the flipping rod 61 attracts the first detection platform 21. The flipping motor 62 is adjusted and moves, which drives the flipping rod 61 to move. The flipping rod 61 drives the first detection platform 21 to move. At this time, the adsorption plate 24 is adjusted and the adsorption plate 24 separates from the bipolar plates. The unqualified bipolar plates fall to the detection frame 1 through the distance between the flipping rod 61 and the second detection platform 51.

[0095] S4: Inspection on the other side of the bipolar plate: When the weld of the bipolar plate passes the inspection, the second inspection platform 51 approaches the flipping rod 61. The movement of the flipping rod 61 causes the first inspection platform 21 to move. When the first inspection platform 21 moves above the second inspection platform 51, the adsorption plate 24 is adjusted, the bipolar plate separates from the adsorption plate 24, and the bipolar plate falls onto the second inspection platform 51. The second inspection platform 51 continues to move on the inspection frame 1. When it moves to the inspection point, the weld on the other side of the bipolar plate is inspected. Unqualified bipolar plates are manually removed and collected.

[0096] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bipolar plate weld quality vision inspection system, characterized by: It includes a testing frame (1) and a first testing mechanism (2); The first testing mechanism (2) includes a first testing platform (21), a first scanning component (22), and a first moving component (23); The first detection platform (21) is slidably connected to the detection frame (1), and the movement direction of the first detection platform (21) is the same as the length direction of the detection frame (1); The first scanning element (22) is mounted on the detection frame (1) via the first moving component (23), and the first scanning element (22) is used to scan the bipolar plate on the first detection platform (21); The first moving component (23) is used to drive the first scanning component (22) to move; The first moving component (23) includes a moving frame (231), a moving ball screw (232), a moving motor (233), and a moving slider (234). The movable frame (231) is mounted on the detection frame (1); The movable ball screw (232) is rotatably connected to the movable frame (231), wherein the axial direction of the movable ball screw (232) is perpendicular to the movement direction of the first detection platform (21) and is the same as the weld length between the two bipolar plates; The movable slider (234) is threadedly connected to the movable ball screw (232) and slidably connected to the movable frame (231). The first scanning element (22) is connected to the movable slider (234). The mobile motor (233) is mounted on the mobile frame (231) and connected to the mobile ball screw (232) to drive the mobile ball screw (232) to rotate. The detection frame (1) is provided with a limiting member (4) for restricting the first detection platform (21). It also includes a first motion component (3) for driving the first detection platform (21) to move on the detection frame (1); The first motion component (3) includes two sets of power components (31), which are connected to the detection frame (1), and there is a gap between the two sets of power components (31); The power component (31) includes a rotating roller (311), a moving belt (312), and a moving motor (313). The moving roller (311) is rotatably connected to the detection frame (1), and the axial direction of the moving roller (311) is perpendicular to the length direction of the detection frame (1). The motion belt (312) is wound around the motion roller (311), and the first detection platform (21) is connected to the motion belt (312); The motion motor (313) is mounted on the detection frame (1), and the motion motor (313) is connected to the motion roller (311) to drive the motion roller (311) to rotate. The limiting component (4) includes a limiting block (41) and a driving source (42); The limiting block (41) is rotatably connected to the detection frame (1). The rotation axis of the limiting block (41) and the detection frame (1) is the same as the axial direction of the moving roller (311), and the limiting block (41) can abut against the first detection platform (21). The drive source (42) is located on the detection frame (1) and connected to the limiting block (41) to drive the limiting block (41) to move closer to or away from the first detection platform (21). It also includes a second detection mechanism (5) for detecting the other side of the bipolar plate; The second detection mechanism (5) includes a second detection platform (51), a second scanning component (52), a second motion component (53), and a second moving component (54); The second detection platform (51) is slidably connected to the detection frame (1) via the second motion component (53), located on one side of the first detection platform (21), and the first detection platform (21) can move to directly above the second detection platform (51); The second motion component (53) is used to drive the second detection platform (51) to move; The second scanning element (52) is mounted on the detection frame (1) via the second moving component (54) for detecting the weld seam of the bipolar plate on the second detection platform (51). The second moving component (54) is used to drive the second scanning element (52) to move. The first moving component (23) and the second moving component (54), the first motion component (3) and the second motion component (53), and the first scanning component (22) and the second scanning component (52) have the same structure; It also includes a flipping component (6) for driving the first detection platform (21) directly above the second detection platform (51). The flipping assembly (6) includes a flipping rod (61) and a flipping motor (62). The flipping rod (61) is rotatably connected to the detection frame (1), and the axial direction of the flipping rod (61) is perpendicular to the length direction of the detection frame (1). The flipping motor (62) is mounted on the detection frame (1) and connected to the flipping rod (61) to drive the flipping rod (61) to rotate. The flipping rod (61) is an electromagnet and can be attracted to the first detection platform (21); The first detection mechanism (2) also includes an adsorption plate (24) for adsorbing the bipolar plate to the first detection platform (21). The first detection platform (21) is provided with adsorption holes (212); the adsorption disk (24) is disposed in the adsorption holes (212), and the adsorption disk (24) is used to stabilize the bipolar plate on the first detection platform (21). When the welding quality of the bipolar plate is unqualified, the first detection platform (21) continues to move forward, and the second detection platform (51) moves backward, so that there is a distance between the second detection platform (51) and the flipping rod (61). The flipping rod (61) is energized and generates magnetism. The flipping rod (61) attracts the first detection platform (21). The flipping motor (62) is adjusted and the flipping motor (62) moves. The flipping motor (62) drives the flipping rod (61) to move. The flipping rod (61) drives the first detection platform (21) to move. At this time, the adsorption plate (24) is adjusted and the adsorption plate (24) separates from the bipolar plate. The unqualified bipolar plate falls to the detection frame (1) through the distance between the flipping rod (61) and the second detection platform (51). When the weld of the bipolar plate passes the inspection, the second inspection platform (51) approaches the flipping rod (61). The movement of the flipping rod (61) drives the first inspection platform (21) to move. When the first inspection platform (21) moves above the second inspection platform (51), the adsorption plate (24) is adjusted, the bipolar plate separates from the adsorption plate (24), and the bipolar plate falls onto the second inspection platform (51). The second inspection platform (51) continues to move on the inspection frame (1) and moves to the inspection point to inspect the weld on the other side of the bipolar plate. Unqualified bipolar plates are manually removed and collected.

2. The bipolar plate weld quality vision inspection system of claim 1, wherein: The flipping rod (61) has a stabilizing groove (611) on the side near the first detection platform (21). The first detection platform (21) extends into the stabilizing groove (611) and is slidably connected to the flipping rod (61).

3. The visual inspection system for bipolar plate welding quality according to claim 1, characterized in that: It also includes multiple third scanning elements (7) for detecting the side of the bipolar plate; The third scanning element (7) is respectively disposed on the first detection platform (21) and the second detection platform (51) for scanning and detecting the sidewall of the bipolar plate.

4. A detection method based on the visual inspection system for bipolar plate welding quality as described in claims 1-3, characterized in that: The following are the operating methods: S1: The bipolar plate to be tested is in place; S11: Place the bipolar plate to be tested: Place the bipolar plate on the first testing platform (21), adjust the bipolar plate, and place the weld seam of the two bipolar plates perpendicular to the length direction of the testing frame (1), adjust the adsorption plate (24), and the adsorption plate (24) fixes the bipolar plate on the first testing platform (21); S12: The first detection platform (21) moves to the detection position: Adjust the motion motor (313), the motion motor (313) drives the motion roller (311) to move, the motion roller (311) rotates and drives the motion belt (312) to move, the motion belt (312) drives the first detection platform (21) to move, and the first detection platform (21) drives the bipolar plate to move to the detection position; S13: When the first detection platform (21) moves to the detection position, the drive source (42) is adjusted. The drive source (42) moves and drives the limiting block (41) to move. The limiting block (41) moves closer to the first detection platform (21) and the limiting block (41) restricts the first detection platform (21). The first detection platform (21) is fixed and restricted at the detection position. S2: Inspect one side of the bipolar plate; adjust the moving motor (233), the moving motor (233) drives the moving ball screw (232) to move, the moving ball screw (232) rotates on the moving frame (231), the rotation of the moving ball screw (232) drives the moving slider (234) to move, the movement of the moving slider (234) drives (312) to move the scanning component, and the scanning component scans and inspects the weld between the two bipolar plates; S3: Removal of unqualified bipolar plates: When the welding quality of the bipolar plates is unqualified, the first detection platform (21) continues to move forward, and the second detection platform (51) moves backward, so that there is a distance between the second detection platform (51) and the flipping rod (61). The flipping rod (61) is energized and generates magnetism. The flipping rod (61) attracts the first detection platform (21). The flipping motor (62) is adjusted, and the flipping motor (62) moves. The flipping motor (62) drives the flipping rod (61) to move. The flipping rod (61) drives the first detection platform (21) to move. At this time, the adsorption plate (24) is adjusted, and the adsorption plate (24) separates from the bipolar plates. The unqualified bipolar plates fall to the detection frame (1) through the distance between the flipping rod (61) and the second detection platform (51). S4: Inspection on the other side of the bipolar plate: When the weld of the bipolar plate passes the inspection, the second inspection platform (51) approaches the flipping rod (61). The flipping rod (61) moves (312) to move the first inspection platform (21). When the first inspection platform (21) moves above the second inspection platform (51), the adsorption plate (24) is adjusted, the bipolar plate separates from the adsorption plate (24), and the bipolar plate falls onto the second inspection platform (51). The second inspection platform (51) continues to move on the inspection frame (1) and moves to the inspection point to inspect the weld on the other side of the bipolar plate. Unqualified bipolar plates are manually removed and collected.

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