New energy automobile battery surface deformation defect detection device and method based on visual detection

Abstract

The invention relates to the technical field of battery defect detection, and discloses a new energy automobile battery surface deformation defect detection device and method based on visual inspection, and the device comprises a battery body, the bottom end of the battery body is symmetrically provided with conveying belt assemblies, and the bottom ends of the conveying belt assemblies are fixedly connected with a supporting frame; the two sides of the supporting frame are fixedly connected with guide rails, the two sides of the guide rails are symmetrically distributed and slidably connected with sliding blocks, the outer sides of the sliding blocks are fixedly connected with detection assemblies used for shooting and detecting a battery body, and the detection assemblies are electrically connected with a control cabinet. The battery is conveyed to the detection position through the conveying belt, the light sources on the two sides are lightened to irradiate multiple faces of the battery, the two side detection assemblies are crossed and overlapped for shooting, and the defect verification accuracy is improved. The transverse plate is connected with the detection assembly, the sliding block overturns along with the battery along the guide rail, and equipment cost is reduced. After detection, the stepping motor drives the sucker mechanism to turn over the battery, so that the bottom end faces upwards, and the detection assembly performs supplementary shooting to complete comprehensive detection.

Description

Technical Field

[0001] This invention relates to the field of battery defect detection technology, and in particular to a device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection. Background Technology

[0002] New energy vehicle batteries are the core power source of vehicles, with lithium-ion batteries being the mainstream. Their core function is to store electrical energy and supply power to the drive system. Their performance directly determines the vehicle's range, safety, and lifespan. Surface deformation defects in new energy vehicle batteries are abnormal shapes such as dents, bulges, and swellings that appear on the battery casing or electrode tabs, affecting battery safety and performance.

[0003] In the current testing process for new energy vehicle batteries, the battery casing has multiple surfaces, including the front, sides, and corners. Multiple switching stations are required to test all surfaces, which lengthens the testing cycle for a single cell. More importantly, during these repeated tests, the defect data for each surface are independent and lack a cross-verification mechanism. When defects involve the connection points of multiple surfaces (such as corner scratches extending to the side) or when there are related defects on different surfaces, it is easy to miss or misjudge, making it impossible to accurately trace the cause of the defects. At the same time, the handling during the repeated testing process may cause secondary damage to the battery surface, further affecting the accuracy of testing and product yield, making it difficult to meet the requirements of high-precision and integrated quality inspection.

[0004] Therefore, there is an urgent need to develop a visual inspection-based device for detecting surface deformation defects in new energy vehicle batteries. This device would be able to perform multi-faceted inspection and cross-verification of new energy vehicle batteries using a single circuit, thereby significantly improving production efficiency, inspection accuracy, production cost, and industrial adaptability. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing technology has the disadvantage of requiring repeated detection to extend the detection cycle. To this end, we propose a device and method for detecting surface deformation defects of new energy vehicle batteries based on visual inspection.

[0006] To achieve the above objectives, this application adopts the following technical solution: a device and method for detecting surface deformation defects of new energy vehicle batteries based on visual inspection, comprising a battery body, a conveyor belt assembly symmetrically arranged at the bottom end of the battery body, a support frame fixedly connected to the bottom end of the conveyor belt assembly, guide rails fixedly connected to both sides of the support frame, sliders symmetrically distributed and slidably connected to both sides of the guide rails, a detection component for photographing and inspecting the battery body fixedly connected to the outside of the sliders, and a control cabinet electrically connected to the detection component; The detection assembly includes a support frame connected to the slider by bolts. A fixed base is fixedly connected to the top of the support frame. Three sets of grooves are evenly distributed on the upper end of the fixed base. A first detection camera is movably connected to the inner side of the middle groove. Two sets of second detection cameras are movably connected to the grooves on both sides at a 15-degree angle. A second light source is provided in the middle of the side of the fixed base near the conveyor belt assembly. First light sources are symmetrically distributed and fixedly installed on both sides of the second light source. The first light source, the second light source and the three sets of grooves correspond to each other. A cross plate for connection is provided at the bottom of the two sets of sliders.

[0007] Preferably, the first light source is tilted inward at a 15-degree angle with respect to the coaxial axis of the two side grooves.

[0008] Preferably, the control cabinet includes an industrial computer assembly for data processing and a vacuum pump assembly for generating negative pressure.

[0009] Preferably, the inner side of the conveyor belt assembly is movably connected to two sets of rotating rods. A first suction cup is fixedly connected to the surface of the right rotating rod, and a second connecting seat is fixedly connected to one side of the bottom end of the first suction cup. A second suction cup is fixedly connected to the surface of the left rotating rod, and a first connecting seat is fixedly connected to one side of the bottom end of the second suction cup. Both the first and second suction cups are connected to the control cabinet.

[0010] Preferably, a U-shaped mounting bracket is fixedly connected to the lower end of the support frame, a stepper motor is fixedly connected to the upper end of the U-shaped mounting bracket, a synchronous pulley is fixedly connected to the output end of the stepper motor, a synchronous belt is movably connected to the surface of the synchronous pulley, and a rotating column is movably connected to the inner side of one end of the synchronous belt.

[0011] Preferably, the rotating column has a timing pulley tooth adapted to the timing pulley in the middle, one end of the rotating column is fixedly connected to a rotating shaft, one end of the rotating shaft is rotatably connected to a connecting frame, and the connecting frame is fixedly connected to the inner side of the transmission belt assembly.

[0012] Preferably, a first boss is fixedly connected to one side of the rotating column, a first connecting rod is movably connected to one end of the first boss, and one end of the first connecting rod is movably connected to the surface of the second connecting seat. A second boss is fixedly connected to the other side of the rotating column, a second connecting rod is movably connected to one end of the second boss, and one end of the second connecting rod is movably connected to the surface of the first connecting seat.

[0013] Preferably, the bottom end of the first suction cup is fixedly connected to a connecting seat, the surface of the connecting seat is slidably connected to a traction rod assembly, and one end of the traction rod assembly is rotatably connected to a slide rod.

[0014] Preferably, the traction rod assembly includes a rod body, which is slidably connected to the surface of the connecting seat. A telescopic column is movably installed inside the rod body. One end of the telescopic column is fixedly connected to a connecting block. The connecting block is rotatably connected to the surface of the sliding rod. A spring is sleeved on the surface of the telescopic column.

[0015] Preferably, a vertical plate is fixedly connected to one side of the horizontal plate, and a groove runs through the surface of the vertical plate, with the sliding rod slidably connected to the surface of the groove.

[0016] Another embodiment is provided, specifically a method for using a vision-based inspection device for detecting surface deformation defects in new energy vehicle batteries. This method employs an intelligent image recognition device based on unmanned aerial vehicles (UAVs) and includes the following steps: S1: When the battery body is moved to the detection component range by the conveyor belt assembly, the detection component detects the front, back, top and sides, and transmits the pictures taken by multiple sets of first and second detection cameras to the control cabinet for identification. S2: The stepper motor drives the rotating column to rotate, so that the first and second suction cups rotate from a horizontal state to a vertical state. During the transmission process, the vacuum pump inside the control cabinet controls the second suction cup to adsorb the battery body. After it is completely vertical, the second suction cup stops adsorbing and the first suction cup adsorbs the battery body. At this time, the stepper motor drives the rotating column to rotate and reset, so that the first and second suction cups rotate from a vertical state to a horizontal state. During this process, the detection component follows the displacement of the battery body through the lower structure of the first suction cup. With the bottom of the battery body facing upward, the detection component detects the battery body again. S3: The stepper motor drives the rotating column to rotate. After the first and second suction cups rotate from a horizontal state to a vertical state, they rotate again to reset, so that the first and second suction cups rotate from a vertical state to a horizontal state. This process drives the detection component to move to the initial position, and the conveyor belt component drives the next set of battery bodies to be detected.

[0017] The technical effects and advantages of this invention are as follows: 1. In this invention, the battery is transported to the detection position via a conveyor belt. Two light sources illuminate multiple sides of the battery, and two sets of side detection components overlap and capture images, improving the accuracy of defect verification. A horizontal plate connects the detection components, and a slider moves along a guide rail as the battery flips, reducing equipment costs. After detection, a stepper motor drives a suction cup mechanism to flip the battery so that the bottom is facing upwards, allowing the detection components to capture additional images and complete the full inspection. The device can achieve multi-faceted detection with a single circuit, eliminating the need for reciprocating operations, making it highly efficient and time-saving.

[0018] 2. In this invention, when the battery is flipped, the first suction cup connecting seat pulls the slide rod of the traction rod assembly to slide within the groove. Because the diameter of the slide rod is smaller than the groove and it is magnetically attracted, it sequentially moves to groove A and then to the oblique groove C as the suction cup changes state, pushing the vertical plate to displace the detection component. After detection, the suction cup rises again, and the slide rod enters the horizontal groove B. Through the telescopic column and spring, the length is adjusted and the detection component is pulled back to its original position. Finally, the slide rod returns to its initial position via the arc surface. The connecting seat groove prevents the structure from jamming. This structure requires no additional power, allowing the detection component to move synchronously with the battery flipping, and a single component completes the detection. Attached Figure Description

[0019] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the detection component of the present invention in an independent state; Figure 3 This is a top view of the structure of the first and second suction cups of the present invention; Figure 4 This is a structural schematic diagram showing the relationship between the rotating column and its connecting components in this invention; Figure 5 This is a structural schematic diagram showing the initial position of the second boss in this invention. Figure 6 This is a schematic diagram of the structure connecting the vertical plate and related components of the present invention. Figure 7 This is a schematic diagram of the slide groove from the front view of the present invention. Figure 8 This is a structural schematic diagram of the internal cross-sectional view of the traction rod assembly of the present invention. Figure 9 This is a schematic diagram showing the imaging and illumination range of the detection component of the present invention.

[0020] In the diagram: 1. Control cabinet; 2. Support frame; 3. Conveyor belt assembly; 4. Guide rail; 5. Slider; 6. Support stand; 7. Fixed seat; 8. First detection camera; 9. Second detection camera; 10. First light source; 11. Second light source; 12. Horizontal plate; 13. Rotating rod; 14. First suction cup; 15. Second suction cup; 16. First connecting seat; 17. Second connecting seat; 18. U-shaped mounting bracket; 19. Rotating shaft; 20. Stepper motor; 21. Synchronous pulley; 22. Synchronous belt; 23. Rotating column; 24. Connecting frame; 25. First boss; 26. First connecting rod; 27. Second connecting rod; 28. Second boss; 29. ​​Vertical plate; 30. Slide groove; 31. Slide rod; 32. Traction rod assembly; 3201. Rod body; 3202. Connecting block; 3203. Telescopic column; 3204. Spring; 33. Connecting seat; 34. Battery body. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0022] Reference Figure 1 , Figure 2 , Figure 9As shown, the present invention provides a technical solution: a device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection, comprising: a battery body 34, a conveyor belt assembly 3 symmetrically arranged at the bottom end of the battery body 34 for conveying the battery body 34, the conveyor belt assembly 3 being controlled by a control cabinet 1, a support frame 2 for supporting the entire device being fixedly connected to the bottom end of the conveyor belt assembly 3, guide rails 4 for sliding sliders 5 being fixedly connected to both sides of the support frame 2, sliders 5 being symmetrically distributed and slidably connected to both sides of the guide rails 4, the sliders 5 being used to drive the detection component to move horizontally, a detection component for photographing and detecting the battery body 34 being fixedly connected to the outside of the sliders 5, the detection component being electrically connected to the control cabinet 1, the detection component including a support frame 6 bolted to the sliders 5, the support frame 6 being used to support a fixed seat 7, the support frame 6 being L-shaped, the top height being higher than the conveyor belt assembly 3, the top of the support frame 6 being fixedly connected to the fixed seat 7, the fixed seat 7 being used to fix the surface structure, the internal... The mounting base 7 is hollow and used to install and organize the circuit and motherboard. The upper end of the mounting base 7 is evenly provided with three sets of grooves. The inner side of the middle groove is movably connected to the first detection camera 8. The first detection camera 8 is used to detect the front and rear ends and the top edge and plane of the battery body 34. The two side grooves are inclined at fifteen degrees and movably connected to two sets of second detection cameras 9. The second detection cameras 9 are used to detect the two sides of the battery body 34. The middle of the side of the mounting base 7 near the conveyor belt assembly 3 is provided with a second light source 11. The second light source 11 is used to illuminate the front and rear ends and the top surface of the battery body 34. The two sides of the second light source 11 are symmetrically distributed and fixedly installed with first light sources 10. The first light sources 10 are used to illuminate the sides of the battery body 34. The first light source 10, the second light source 11 and the three sets of grooves correspond to each other. The bottom end of the two sets of sliders 5 is provided with a horizontal plate 12 for connection. The first light source 10 is inclined inward at fifteen degrees with the two side grooves as coaxial. The control cabinet 1 includes an industrial control computer assembly for data processing and a vacuum pump assembly for forming negative pressure.

[0023] Reference Figure 1 , Figure 2 , Figure 9As shown, in this implementation scheme: the battery body 34 is transported by two sets of conveyor belt assemblies 3 at the top of the support frame 2. When the battery body 34 moves to the detection assembly, the second light source 11 and the first light source 10 on both sides of the support frame 2 illuminate the front and rear ends, top and sides of the battery body 34. The first detection camera 8 and the second detection camera 9 at the top of the fixed seat 7 take pictures of the battery body 34 and transmit the image data to the control cabinet 1. Unlike the prior art, the battery body 34 is photographed except for the bottom surface by two sets of detection assemblies set on the side. The detection assemblies on both sides perform overlapping shooting of the side and top, cross-verifying the surface defects of the battery body 34, improving the verification accuracy. The two sets of detection assemblies are connected by the horizontal plate 12. The detection assemblies are moved by the slider 5 sliding on the surface of the guide rail 4, which drives the detection assemblies to rotate and move with the battery body 34. There is no need for multiple sets of equipment, reducing the detection cost.

[0024] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the present invention provides a technical solution: a device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection, comprising: two sets of rotating rods 13 movably connected to the inner side of a conveyor belt assembly 3 for driving a first suction cup 14 and a second suction cup 15 to rotate; a first suction cup 14 fixedly connected to the surface of the right rotating rod 13, the first suction cup 14 being used for adsorption when the battery body 34 is flipped; a second connecting seat 17 fixedly connected to one side of the bottom end of the first suction cup 14, the second connecting seat 17 being used to drive the first suction cup 14 to rotate; and a second suction cup 15 fixedly connected to the surface of the left rotating rod 13. The suction cup 15 is used to attract the battery body 34 when it rotates, preventing the battery body 34 from tipping over. A first connecting seat 16 is fixedly connected to one side of the bottom of the second suction cup 15. The first connecting seat 16 is used to pull the first suction cup 14 to rotate. Both the first suction cup 14 and the second suction cup 15 are connected to the control cabinet 1. A U-shaped mounting bracket 18 is fixedly connected to the lower end of the support frame 2. The U-shaped mounting bracket 18 is used to fix the stepper motor 20. The stepper motor 20 is fixedly connected to the upper end of the U-shaped mounting bracket 18. The stepper motor 20 acts as a drive source to rotate the synchronous pulley 21. The stepper motor 20 is electrically connected to the control cabinet. A synchronous pulley 21 is fixedly connected to the output end of machine 20. A synchronous belt 22 is movably connected to the surface of the synchronous pulley 21. A rotating column 23 is movably connected to the inner side of one end of the synchronous belt 22. The rotating column 23 is used to drive the first boss 25 and the second boss 28 to draw an arc with the rotating column 23 as the center. The middle part of the rotating column 23 is provided with synchronous pulley teeth that are adapted to the synchronous pulley 21. A rotating shaft 19 is fixedly connected to one end of the rotating column 23. The rotating shaft 19 is used to connect to the connecting frame 24. The connecting frame 24 is rotatably connected to one end of the rotating shaft 19. The connecting frame 24 is provided with a bearing inside to facilitate the rotation of the rotating column 23. The frame 24 is fixedly connected to the inner side of the conveyor belt assembly 3. A first boss 25 is fixedly connected to one side of the rotating column 23. The first boss 25 is used to push the first connecting rod 26. One end of the first boss 25 is movably connected to the first connecting rod 26 for transmission. One end of the first connecting rod 26 is movably connected to the surface of the second connecting seat 17. A second boss 28 is fixedly connected to the other side of the rotating column 23. The second boss 28 is used to pull the second connecting rod 27. One end of the second boss 28 is movably connected to the second connecting rod 27 for transmission. One end of the second connecting rod 27 is movably connected to the surface of the first connecting seat 16.

[0025] Reference Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, in this embodiment, further: after the detection component completes the detection, the stepper motor 20 drives the synchronous pulley 21 to rotate, causing the synchronous belt 22 on the surface of the synchronous pulley 21 to drive the rotating column 23 to rotate. The rotating column 23 is connected and fixed to the inner side of the transmission belt assembly 3 via the rotating shaft 19 and the connecting frame 24. When the rotating column 23 rotates, the second boss 28 draws an arc around the rotating shaft 19, pulling the second connecting rod 27, causing the second connecting rod 27 to pull the second suction cup 15, which is horizontal to the surface of the first connecting seat 16 and the transmission belt assembly 3, to lift around the rotating rod 13. At this time, the control cabinet 1 drives the internal vacuum pump assembly to generate negative pressure on the second suction cup 15 to adsorb the battery body 34. At the same time, when the second suction cup 15 is lifted, the first suction cup 14 is lifted by the first boss 25. The rotating shaft 19, acting as the axis, draws an arc to push the second connecting seat 17 at one end of the first connecting rod 26, causing the first suction cup 14 to change from a horizontal state with the conveyor belt assembly 3 to a vertical state with the rotating rod 13 as the center. When the first suction cup 14 contacts the battery body 34, the second suction cup 15 stops adsorbing, and the vacuum pump assembly drives the first suction cup 14 to adsorb the battery body 34. At this time, the rotating column 23 rotates in the opposite direction, causing the first suction cup 14 and the second suction cup 15 to reset. At this time, the battery body 34 adsorbed on the surface of the first suction cup 14 flips over, keeping the bottom facing upward. The detection assembly takes supplementary pictures of the battery body 34 with the bottom facing upward, completing the detection work of each side. This allows the device to complete multi-side detection in a single line without reciprocating operation, reducing working time.

[0026] Reference Figure 6 , Figure 7 , Figure 8 As shown, the present invention provides a technical solution: a device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection, comprising: a connecting seat 33 fixedly connected to the bottom end of a first suction cup 14, the connecting seat 33 being used to connect a traction rod assembly 32, a groove being provided on the surface of the connecting seat 33 for the traction rod assembly 32 to move with its connecting end, the traction rod assembly 32 being slidably connected to the surface of the connecting seat 33, the traction rod assembly 32 being used to drive the horizontal plate 12 to move, a sliding rod 31 being rotatably connected to one end of the traction rod assembly 32, the sliding rod 31 being used to slide inside the sliding groove 30, and the traction rod assembly 32 including a rod body 32. 01. The rod body 3201 is slidably connected to the surface of the connecting seat 33. A telescopic column 3203 for adjusting the length of the traction rod assembly 32 is movably installed inside the rod body 3201. One end of the telescopic column 3203 is fixedly connected to a connecting block 3202 for connecting the slide rod 31. The connecting block 3202 is rotatably connected to the surface of the slide rod 31. A spring 3204 for rebound reset is sleeved on the surface of the telescopic column 3203. A vertical plate 29 is fixedly connected to one side of the horizontal plate 12. The vertical plate 29 is used to set the sliding groove 30. The sliding groove 30 runs through the surface of the vertical plate 29. A magnetic component is set inside the sliding groove 30 (see attached diagram). Figure 7(The shaded area indicates the distribution location), the slide bar 31 is slidably connected to the surface of the slide groove 30.

[0027] Reference Figure 6 , Figure 7 , Figure 8 As shown in this embodiment: when the battery body 34 is rotated by the first suction cup 14 and the second suction cup 15, the connecting seat 33 at the bottom of the first suction cup 14 pulls the slide rod 31 at one end of the traction rod assembly 32 to slide inside the slide groove 30. The diameter of the slide rod 31 is smaller than the diameter of the vertical and inclined slide groove 30. Therefore, the slide rod 31 is preferentially attracted to the side with the magnetic component. When the first suction cup 14 is rotated to a state perpendicular to the conveyor belt assembly 3, the slide rod 31 is at the angle at point A of the slide groove 30. When the first suction cup 14 returns to the horizontal state, the slide rod 31 enters the inclined slide groove 30. When it reaches the angle at point C, the slide rod 31 disengages from the magnetic component of the inclined slide groove and pushes the vertical plate 29 to move, so that the horizontal plate 12 connected to the vertical plate 29 drives the detection component to move.

[0028] After the test is completed, the first suction cup 14 stands up again. At this time, the magnetic component at the lower end of the slide bar 31 pulls the slide bar 31 into the transverse slide groove 30. The diameter of the transverse slide groove 30 is the same as that of the slide bar 31 (see attached diagram in the instruction manual). Figure 7 When the slide rod 31 is pulled, it enters the angle at point B. When it is pulled, the connecting block 3202 pulls the telescopic column 3203 to extend outward and compresses the spring 3204 to adapt to the extension length. It also pulls the horizontal plate 12 to reset the detection component. During the process of the first suction cup 14 turning to a horizontal state, the traction rod assembly 32 pushes the slide rod 31 away from the angle at point B. Due to gravity and the magnetic attraction of the lower magnetic component, it reaches the arc surface. At this time, the connecting seat 33 presses down and drives the slide rod 31 to the initial position. The groove on the surface of the connecting seat 33 allows the traction rod assembly 32 to have adjustment space when it moves, avoiding structural jamming. This structure can synchronously drive the detection component to move when the battery body 34 flips, so that a single detection component can complete the detection work without the need for an additional power output source.

[0029] This application also includes an embodiment, specifically a method for using a vision-based detection device for detecting surface deformation defects in new energy vehicle batteries, comprising the following steps: Step 1: When the battery body 34 is moved to the detection component range by the conveyor belt assembly 3, the detection component detects the front, back, top and sides, and transmits the pictures captured by multiple sets of first detection cameras 8 and second detection cameras 9 to the control cabinet 1 for identification. Step 2: The stepper motor 20 drives the rotating column 23 to rotate, causing the first suction cup 14 and the second suction cup 15 to rotate from a horizontal state to a vertical state. During the transmission process, the vacuum pump inside the control cabinet 1 controls the second suction cup 15 to adsorb the battery body 34. After it is completely vertical, the second suction cup 15 stops adsorbing and the first suction cup 14 adsorbs the battery body 34. At this time, the stepper motor 20 drives the rotating column 23 to rotate and reset, causing the first suction cup 14 and the second suction cup 15 to rotate from a vertical state to a horizontal state. During this process, the detection component follows the displacement of the battery body 34 through the lower structure of the first suction cup 14. The bottom of the battery body 34 faces upward, and the detection component detects the battery body 34 again. Step 3: Stepper motor 20 drives rotating column 23 to rotate. After the first suction cup 14 and the second suction cup 15 rotate from the horizontal state to the vertical state, they rotate again to reset, so that the first suction cup 14 and the second suction cup 15 rotate from the vertical state to the horizontal state. This process drives the detection component to move to the initial position, and the conveyor belt component 3 drives the next set of battery bodies 34 to be detected.

[0030] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A visual inspection based device and method for detecting surface deformation defects of a new energy vehicle battery, characterized in that: The device includes a battery body, a conveyor belt assembly symmetrically arranged at the bottom of the battery body, a support frame fixedly connected to the bottom of the conveyor belt assembly, guide rails fixedly connected to both sides of the support frame, sliders symmetrically distributed and slidably connected to both sides of the guide rails, a detection component for photographing and detecting the battery body fixedly connected to the outside of the sliders, and a control cabinet electrically connected to the detection component. The detection assembly includes a support frame connected to the slider by bolts. A fixed base is fixedly connected to the top of the support frame. Three sets of grooves are evenly distributed on the upper end of the fixed base. A first detection camera is movably connected to the inner side of the middle groove. Two sets of second detection cameras are movably connected to the grooves on both sides at a 15-degree angle. A second light source is provided in the middle of the side of the fixed base near the conveyor belt assembly. First light sources are symmetrically distributed and fixedly installed on both sides of the second light source. The first light source, the second light source and the three sets of grooves correspond to each other. A cross plate for connection is provided at the bottom of the two sets of sliders. 2.The new energy vehicle battery surface deformation defect detection device and method based on visual detection according to claim 1, characterized in that: The first light source is tilted inward at a 15-degree angle with the grooves on both sides coaxial.

3. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 1, characterized in that: The control cabinet includes an industrial computer assembly for data processing and a vacuum pump assembly for generating negative pressure.

4. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 1, characterized in that: Two sets of rotating rods are movably connected to the inner side of the conveyor belt assembly. A first suction cup is fixedly connected to the surface of the right rotating rod, and a second connecting seat is fixedly connected to one side of the bottom of the first suction cup. A second suction cup is fixedly connected to the surface of the left rotating rod, and a first connecting seat is fixedly connected to one side of the bottom of the second suction cup. Both the first and second suction cups are connected to the control cabinet.

5. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 1, characterized in that: The lower end of the support frame is fixedly connected to a U-shaped mounting bracket, the upper end of the U-shaped mounting bracket is fixedly connected to a stepper motor, the output end of the stepper motor is fixedly connected to a synchronous pulley, the surface of the synchronous pulley is movably connected to a synchronous belt, and one end of the synchronous belt is movably connected to a rotating column.

6. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 5, characterized in that: The rotating column has a timing pulley tooth in the middle that is adapted to the timing pulley. One end of the rotating column is fixedly connected to a rotating shaft, and one end of the rotating shaft is rotatably connected to a connecting frame. The connecting frame is fixedly connected to the inside of the transmission belt assembly.

7. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 5, characterized in that: A first boss is fixedly connected to one side of the rotating column. A first connecting rod is movably connected to one end of the first boss. One end of the first connecting rod is movably connected to the surface of the second connecting seat. A second boss is fixedly connected to the other side of the rotating column. A second connecting rod is movably connected to one end of the second boss. One end of the second connecting rod is movably connected to the surface of the first connecting seat.

8. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 4, characterized in that: The bottom end of the first suction cup is fixedly connected to a connecting seat, and a traction rod assembly is slidably connected to the surface of the connecting seat. One end of the traction rod assembly is rotatably connected to a slide rod.

9. The device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection according to claim 8, characterized in that: The traction rod assembly includes a rod body that is slidably connected to the surface of a connecting seat. A telescopic column is movably installed inside the rod body. One end of the telescopic column is fixedly connected to a connecting block. The connecting block is rotatably connected to the surface of a sliding rod. A spring is sleeved on the surface of the telescopic column.

10. A device and method for detecting surface deformation defects in new energy vehicle batteries based on visual inspection, as described in claim 8, characterized in that: A vertical plate is fixedly connected to one side of the horizontal plate, and a groove runs through the surface of the vertical plate. The sliding rod is slidably connected to the surface of the groove.

11. A vision-based detection device and method for detecting surface deformation defects in new energy vehicle batteries, implemented using the vision-based detection device for detecting surface deformation defects in new energy vehicle batteries according to any one of claims 1-9, characterized in that, Includes the following steps: S1: When the battery body is moved to the detection component range by the conveyor belt assembly, the detection component detects the front, back, top and sides, and transmits the pictures taken by multiple sets of first and second detection cameras to the control cabinet for identification. S2: The stepper motor drives the rotating column to rotate, so that the first and second suction cups rotate from a horizontal state to a vertical state. During the transmission process, the vacuum pump inside the control cabinet controls the second suction cup to adsorb the battery body. After it is completely vertical, the second suction cup stops adsorbing and the first suction cup adsorbs the battery body. At this time, the stepper motor drives the rotating column to rotate and reset, so that the first and second suction cups rotate from a vertical state to a horizontal state. During this process, the detection component follows the displacement of the battery body through the lower structure of the first suction cup. With the bottom of the battery body facing upward, the detection component detects the battery body again. S3: The stepper motor drives the rotating column to rotate. After the first and second suction cups rotate from a horizontal state to a vertical state, they rotate again to reset, so that the first and second suction cups rotate from a vertical state to a horizontal state. This process drives the detection component to move to the initial position, and the conveyor belt component drives the next set of battery bodies to be detected.

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