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CN-122016828-A - Method and system for visual detection of square battery

CN122016828ACN 122016828 ACN122016828 ACN 122016828ACN-122016828-A

Abstract

The invention discloses a method and a system for visual detection of a square battery. The automatic feeding and discharging device comprises a feeding conveying line and a discharging conveying line, wherein the feeding conveying line is sequentially provided with a large end face detection device and a top face and bottom face detection device, the discharging conveying line is provided with a small end face detection device, and the tail end of the feeding conveying line and the head end of the discharging conveying line are provided with a transverse moving conveying device. The invention solves the problems of inaccurate manual visual inspection of battery defects and labor consumption in the related technology.

Inventors

  • GAO JIANCHAO
  • WANG GANG
  • LIU ZENGCHANG
  • TIAN RUILI

Assignees

  • 中国汽车工业工程有限公司
  • 机械工业第四设计研究院有限公司

Dates

Publication Date
20260512
Application Date
20260120

Claims (10)

  1. 1. A system for visual inspection of a prismatic battery, comprising: the feeding conveyor line (5) and the discharging conveyor line (8), wherein the feeding conveyor line (5) is sequentially provided with a large end face detection device (3) and a top surface and bottom surface detection device (4), and the discharging conveyor line (8) is provided with a small end face detection device (7); The tail end of the feeding conveying line (5) and the head end of the discharging conveying line (8) are provided with a transverse moving conveying device (6).
  2. 2. The system for visual inspection of a square battery of claim 1, comprising: The head end of the feeding conveying line (5) is provided with a feeding code scanning device (1); And a blanking code scanning device (9) is arranged at the tail end of the blanking conveying line (8).
  3. 3. The system for visual inspection of a square battery of claim 1, comprising: the tail end of the feeding conveying line (5) is fixedly connected with a four-to-one lane-dividing device (10), and the transverse moving carrying device (6) is located above the four-to-one lane-dividing device (10) and above the head end of the discharging conveying line (8).
  4. 4. The system for visual inspection of a square battery of claim 1, comprising: the large end face detection device (3), the top surface and bottom surface detection device (4) and the small end face detection device (7) are composed of a dome light-emitting device (302), a linear array camera (301) and a bracket (303); Two dome light emitting devices (302) and the linear camera (301) are oppositely arranged on the support (303) of the large end face detection equipment (3), and the parallel faces of the dome light emitting devices (302) are perpendicular to the ground; two dome light emitting devices (302) and the linear camera (301) are oppositely arranged on the support (303) of the top surface and bottom surface detection equipment (4), and the parallel surfaces of the dome light emitting devices (302) are parallel to the ground; Two dome light emitting devices (302) and the linear camera (301) are oppositely arranged on the support (303) of the small end face detection equipment (7), and the parallel faces of the dome light emitting devices (302) are perpendicular to the ground.
  5. 5. The system for visual inspection of a square battery of claim 1, comprising: the feeding conveying line (5) comprises an inlet keel chain conveyor (101) and an outlet keel chain conveyor (102), and two clamping conveyors (103) are arranged between the inlet keel chain conveyor (101) and the outlet keel chain conveyor (102).
  6. 6. The system for visual inspection of a square battery of claim 1, comprising: The transverse moving and carrying device (6) comprises a portal frame (601), a horizontal moving shaft (603) and a vertical moving shaft (602), wherein the vertical moving shaft (602) is arranged on the horizontal moving shaft (603); the horizontal moving shaft (603) is provided with a drag chain (604), and the end part of the horizontal moving shaft (603) is provided with a maintenance bolt (605).
  7. 7. The system for visual inspection of a square battery of claim 6, comprising: The vertical moving shaft (602) is provided with a maintenance plug jack (606) and a battery cell clamping jaw (607).
  8. 8. A method for visual inspection of a prismatic battery, applied to a device for visual inspection of a prismatic battery according to any of the preceding claims 1-7, comprising: scanning a two-dimensional code of the square battery (2) through the feeding code scanning equipment (1) to acquire two-dimensional code information; acquiring surface state information of a square battery (2), wherein the surface state information of the square battery (2) comprises surface state information of two large end faces, surface state information of a top face and a bottom face and surface state information of two small end faces; binding the two-dimensional code information and the surface state information of the square battery (2); And scanning the two-dimensional code of the square battery (2) again through the blanking code scanning equipment (9), and rejecting the square battery (2) with abnormal surface state information of the square battery (2).
  9. 9. The method for visual inspection of a square battery of claim 8, comprising: Acquiring images of two large end faces of the square battery (2) through a large end face detection device (3), and obtaining surface state information of the two large end faces through visual processing, wherein the surface state information comprises two-dimensional image information and three-dimensional image information; acquiring images of the top surface and the bottom surface of the square battery (2) through a top surface and bottom surface detection device (4), and obtaining surface state information of the top surface and the bottom surface through visual processing; And acquiring images of two small end faces of the square battery (2) through a small end face detection device (7), and obtaining surface state information of the two small end faces through visual processing.
  10. 10. The method for visual inspection of a square battery of claim 8, comprising: after the feeding conveying line (5) obtains the surface state information of the two large end faces and the surface states of the top face and the bottom face, transporting the square battery (2) to a four-to-one lane device (10); the transverse moving and carrying equipment (6) carries the square batteries (2) to the blanking conveying line (8).

Description

Method and system for visual detection of square battery Technical Field The invention relates to the technical field of battery manufacturing, in particular to a method and a system for visual detection of square batteries. Background The surface of the square battery is required to have insulating characteristics, and in order to solve the problem, two schemes of coating a blue film and spraying an insulating coating are provided, and the existing technical scheme is to detect the spraying of the insulating coating through a manual visual inspection method at present, so that the method has the defects of low inspection efficiency, high labor intensity of personnel operation, poor economy and the like. Similar techniques are used for detecting blue films on the surfaces of batteries, wherein the defects of the blue films are mainly bulges, scratches, breakage and foreign matters, related method patents are CN117911420B, CN116087218B, CN116626053B and the like, and related equipment patents are CN118914075A and CN220137015U. The purpose of the detection of the blue film and the surface coating is the same, and the purpose is to ensure the insulating property of the battery surface by detecting the surface defects, and the difference is that the detection content and the focus point are different, and the method and the scheme for solving the problem are different. Visual inspection of battery coatings has not seen the disclosed methods and apparatus, and is currently predominately manual visual inspection. The defects of shrinkage cavity, scratch, bubble and the like on the surface of the battery are identified by an online visual detection method, so that the labor intensity of workers is reduced. Disclosure of Invention The invention aims to provide a method and a system for visual detection of square batteries, which are used for solving the problems of inaccurate manual visual inspection of battery defects and labor consumption in the related art. In order to achieve the above purpose, the present invention adopts the following technical scheme: A system for visual detection of square batteries comprises a feeding conveying line and a discharging conveying line, wherein the feeding conveying line is sequentially provided with a large end face detection device and a top face and bottom face detection device, the discharging conveying line is provided with a small end face detection device, and the tail end of the feeding conveying line and the head end of the discharging conveying line are provided with a transverse moving conveying device. The feeding and code scanning device is further arranged at the head end of the feeding conveying line, and the discharging and code scanning device is arranged at the tail end of the discharging conveying line. The feeding conveyor line is further provided with a four-to-one lane-dividing device fixedly connected to the tail end of the feeding conveyor line, and the transverse moving carrying device is located above the four-to-one lane-dividing device and above the head end of the discharging conveyor line. The dome light-emitting device and the linear camera are arranged on the support of the large end face detection device, the dome light-emitting device and the linear camera are arranged on the support of the small end face detection device, the parallel face of the dome light-emitting device is perpendicular to the ground, the dome light-emitting device and the linear camera are arranged on the support of the top face bottom face detection device, the parallel face of the dome light-emitting device is parallel to the ground, and the dome light-emitting device and the linear camera are arranged on the support of the small end face detection device, and the parallel face of the dome light-emitting device is perpendicular to the ground. The feeding conveyor line further comprises an inlet keel chain conveyor and an outlet keel chain conveyor, and two clamping conveyors are arranged between the inlet keel chain conveyor and the outlet keel chain conveyor. The transverse moving and carrying device is further arranged, and comprises a portal frame, a horizontal moving shaft and a vertical moving shaft, wherein the vertical moving shaft is arranged on the horizontal moving shaft, a drag chain is arranged on the horizontal moving shaft, and a maintenance bolt is arranged at the end part of the horizontal moving shaft. The vertical moving shaft is further provided with a maintenance bolt jack and a battery core clamping jaw. In order to achieve the above purpose, the present invention adopts the following technical scheme: A square battery visual detection method comprises the steps of scanning a two-dimensional code of a square battery through feeding code scanning equipment to obtain two-dimensional code information, obtaining square battery surface state information, binding the two-dimensional code information and the square battery surface state information, and sc