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CN-121978007-A - Battery shell defect detection device and detection method

CN121978007ACN 121978007 ACN121978007 ACN 121978007ACN-121978007-A

Abstract

The invention relates to the technical field of battery detection, in particular to a device and a method for detecting defects of a battery shell, wherein the device comprises a supporting plate, a rotating shaft, a conveyor belt, an intermittent motor, an execution unit and a fixing unit; the invention can solve the problems that in the process of detecting the battery shell in the prior art, the uneven side wall of the battery shell is difficult to identify, so that the shell with unqualified flatness has poorer strength, the performance and the service life of a battery are influenced, even potential safety hazards exist, the inner wall of the battery cannot be detected, the comprehensive detection cannot be realized, the visual defect and the uneven side wall of the battery shell can be detected quickly by shooting the top and the peripheral outer wall of the battery shell from top to bottom through the external camera, and the inner side wall of the battery shell is detected through the built-in camera at the same time, so that the detection effect of the battery shell is ensured.

Inventors

  • You Weifen
  • YOU JIANXUN
  • YOU KAIMING
  • LIN XIAOXIAO
  • WANG WANZHOU

Assignees

  • 宁波美丁模塑有限公司

Dates

Publication Date
20260505
Application Date
20260202

Claims (10)

  1. 1. The utility model provides a battery case defect detection device, a serial communication port, including backup pad (1) that two parallel were arranged, backup pad (1) lower extreme is provided with support (2), rotate between two backup pads (1) and install a plurality of pivots (3), a plurality of pivots (3) outer wall overlap jointly and are equipped with conveyer belt (4), arbitrary backup pad (1) outer wall is provided with intermittent type motor (5) that are connected with arbitrary pivot (3) through the motor cabinet, execution unit (6) that are used for carrying out visual defect detection to battery case (8) are installed to backup pad (1) upper end, conveyer belt (4) outer wall evenly is provided with a plurality of fixed units (7) that are used for carrying out spacing to battery case (8), be used for carrying out visual defect detection to execution unit (6) department with battery case (8) stability through conveyer belt (4) cooperation fixed unit (7).
  2. 2. The battery case defect detection device according to claim 1, wherein the execution unit (6) comprises U-shaped frames (61) arranged at the upper ends of the two brackets (2), openings of the U-shaped frames (61) are downwards arranged, connecting frames (62) are arranged on the inner walls of corners of the vertical sections and the horizontal sections of the U-shaped frames (61), side support plates (63) are arranged on two side walls of the horizontal sections of the U-shaped frames (61) in the length direction, external cameras (64) for detecting the defects and flatness of the outer walls of the battery case (8) are arranged on one sides, close to the middle of the U-shaped frames (61), of the connecting frames (62) and the side support plates (63), and a controller (65) is arranged at the upper end of the horizontal section of the U-shaped frames (61), and is electrically connected with the external cameras (64).
  3. 3. The battery case defect detection device according to claim 1, wherein the fixing unit (7) comprises a plurality of return pads (71) arranged on the outer wall of the conveyor belt (4), the outer wall of the conveyor belt (4) is further provided with a plurality of supporting and fixing groups positioned in the middle of the return pads (71), each supporting and fixing group comprises two mounting rods (72) parallel to the axis of the rotating shaft (3), two self-locking telescopic members (73) are symmetrically arranged at the upper ends of the mounting rods (72), suction discs (74) are arranged at one ends, far away from the mounting rods (72), of the self-locking telescopic members (73), and the fixing unit (7) further comprises an adsorption mechanism (75) for improving limiting effect on the battery case (8).
  4. 4. The battery case defect detection device according to claim 3, wherein the self-locking telescopic member (73) comprises a fixed section and an adjusting section, and the adjusting section is matched with the fixed section in a threaded connection manner and is used for adjusting the whole length of the self-locking telescopic member (73).
  5. 5. A battery case defect detection device according to claim 3, wherein the adsorption mechanism (75) comprises two fixing plates (751) arranged between the two support plates (1), the two fixing plates (751) are arranged below the execution unit (6), an air pump (753) is arranged between the two fixing plates (751) through a mounting seat (752), sealing hoppers (754) which are in sliding contact with the inner walls of the upper side and the lower side of the conveyor belt (4) are arranged at the upper end and the lower end of the fixing plates (751), the air extraction end of the air pump (753) is communicated with the sealing hoppers (754) above, and the air outlet end of the air pump (753) is communicated with the sealing hoppers (754) below.
  6. 6. The battery case defect detecting device according to claim 5, wherein the conveyor belt (4) corresponding to the position of the seal bucket (754) is provided with a plurality of vent holes (755), and the vent holes (755) are communicated with the seal bucket (754).
  7. 7. The battery case defect detection device according to claim 5, wherein rubber rollers (756) which are in rolling contact with the inner side walls of the conveyor belt (4) are rotatably arranged on two side walls, which are far away from the air pump (753), of the sealing bucket (754) and are parallel to the axis of the rotating shaft (3), and rubber strips (757) which are in sliding contact with the inner side walls of the conveyor belt are arranged on two side walls, which are far away from the air pump (753) and are perpendicular to the axis of the rotating shaft (3), of the sealing bucket (754).
  8. 8. A battery case defect detection device according to claim 3, wherein a positioning ring (731) is sleeved at one end of each self-locking telescopic piece (73) far away from the mounting rod (72), a telescopic rod (732) is rotatably mounted on the positioning ring (731), a horizontal plate (733) is rotatably mounted at one end of the telescopic rod (732) between the two mounting rods (72) of each supporting and fixing group far away from the positioning ring (731), a supporting column (734) is arranged on the horizontal plate (733), and a reset spring rod (735) is arranged between the lower end of the supporting column (734) and the conveyor belt (4).
  9. 9. The battery case defect detection device according to claim 8, wherein two sliding grooves (736) parallel to the axis of the supporting columns (734) are symmetrically formed in the supporting columns, electric sliding blocks (737) are arranged in the sliding grooves (736), rectangular sleeving cylinders (738) are jointly installed on the outer walls of the two electric sliding blocks (737), built-in cameras (739) are arranged on the outer walls of four sides of the rectangular sleeving cylinders (738), and the built-in cameras (739) are electrically connected with the controller (65).
  10. 10. A battery case defect detection method employing a battery case defect detection apparatus as set forth in any one of claims 1 to 9, characterized in that the detection method comprises the steps of: The starting device comprises a starting device, a rotating shaft (3) is driven to rotate by an intermittent motor (5) and a conveyor belt (4) is driven to intermittently move, so that the conveyor belt (4) drives a fixing unit (7) to intermittently move in the circumferential direction; s2, installing a battery shell, namely buckling the battery shell (8) to be detected on the fixing unit (7) in a mode of opening downwards; And S3, detecting the battery shell, namely conveying the battery shell (8) to an execution unit (6) by a conveying belt (4) through a fixing unit (7), and detecting visual defects of the inner side wall and the outer side wall of the battery shell (8) through the execution unit (6) during the process.

Description

Battery shell defect detection device and detection method Technical Field The invention relates to the technical field of battery detection, in particular to a device and a method for detecting defects of a battery shell. Background Along with the enhancement of environmental awareness and popularization of sustainable development concepts, the application of the bio-based plastic in the field of battery shell manufacturing is more and more extensive, and the bio-based plastic is gradually an ideal substitute for the traditional plastic battery shell, and as the quality of the battery shell is closely related to the performance of a battery, necessary detection needs to be carried out on the battery shell for ensuring the safety and the service life of the battery, and the detection of the visual defects of the battery shell has various important meanings. If the surface of the battery shell has defects such as cracks and scratches, the internal pressure of the battery is changed in the charging and discharging process, so that the defects are further expanded, the structural strength of the battery shell is affected, and the battery is charged and discharged normally. In the prior art, a large number of visual defect detection of battery cases and corresponding devices are also disclosed, wherein, for example, chinese patent publication No. CN215985795U discloses a square power battery case visual defect rapid detection, which comprises a base, a placement device for placing batteries, a camera detection device for detecting batteries and a mobile device for conveying batteries, wherein two support tables are arranged on the base, and the camera detection devices are symmetrically arranged on the two support tables When the camera detection device is used, the camera detection devices are installed on two sides of the placement device, two sides of the battery can be detected simultaneously, the placement device can drive the battery to rotate, the angle of the battery is converted, one camera detection device can detect the other two surfaces of the battery, and the mobile device is used for sending out the detected battery. However, in the process of detecting the battery case using the above-described prior art, there are the following disadvantages: 1. although the visual defect detection of the battery shell can be realized by the prior art, the uneven phenomenon is easy to appear on the side wall of the square battery shell, and the uneven side wall of the battery shell is difficult to identify by camera shooting, so that the battery shell with unqualified flatness is poor in strength, the shell and a radiating device of an internal battery of the battery shell cannot be well attached, an air gap is formed, heat generated in the charging and discharging process of the battery cannot be timely emitted, the temperature of the battery is increased, the performance and the service life of the battery are influenced, and even potential safety hazards exist. 2. In addition, in the manufacturing process of the battery shell, the inner wall of the battery shell is also scratched, sunken, impurities and other defects, the structural strength of the battery shell is also affected, and the prior art can only detect the outer wall defect of the battery shell and can not detect the inner wall of the battery, so that the comprehensive detection can not be realized, and the usability is affected after the battery shell with the defect on the inner wall flows into the market. Therefore, under the above stated viewpoints, the detection means of the battery case of the related art has room for improvement. Disclosure of Invention In order to solve the problems, the invention provides a battery shell defect detection device, which comprises two support plates which are arranged in parallel, wherein a bracket is arranged at the lower end of each support plate, a plurality of rotating shafts are rotatably arranged between the two support plates, the outer walls of the rotating shafts are sleeved with a conveyor belt jointly, the outer wall of any one support plate is provided with an intermittent motor connected with any one rotating shaft through a motor base, the upper end of the support plate is provided with an execution unit for detecting visual defects of the battery shell, the outer wall of the conveyor belt is uniformly provided with a plurality of fixing units for limiting the battery shell, and the conveyor belt is matched with the fixing units for stably conveying the battery shell to the execution unit for detecting the visual defects. As a preferable technical scheme of the invention, the executing unit comprises a U-shaped frame arranged at the upper ends of two brackets, openings of the U-shaped frame are downwards arranged, connecting frames are arranged on the inner walls of corners of the vertical section and the horizontal section of the U-shaped frame, side support plates are arranged on two side wal