WO2024255293A1 - 检测装置及用于电芯检测的检测方法 - Google Patents

检测装置及用于电芯检测的检测方法 Download PDF

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Publication number
WO2024255293A1
WO2024255293A1 PCT/CN2024/077590 CN2024077590W WO2024255293A1 WO 2024255293 A1 WO2024255293 A1 WO 2024255293A1 CN 2024077590 W CN2024077590 W CN 2024077590W WO 2024255293 A1 WO2024255293 A1 WO 2024255293A1
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WO
WIPO (PCT)
Prior art keywords
battery cell
detection
detector
rotating disk
rotating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2024/077590
Other languages
English (en)
French (fr)
Inventor
张丽
陈志强
李元景
李亮
洪明志
常铭
王子楠
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsinghua University
Nuctech Co Ltd
Original Assignee
Tsinghua University
Nuctech Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tsinghua University, Nuctech Co Ltd filed Critical Tsinghua University
Priority to EP24822252.3A priority Critical patent/EP4726377A1/en
Priority to KR1020257021734A priority patent/KR20250114112A/ko
Priority to JP2025538731A priority patent/JP2026501635A/ja
Publication of WO2024255293A1 publication Critical patent/WO2024255293A1/zh
Priority to MX2025007665A priority patent/MX2025007665A/es
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B15/00—Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/06—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and measuring the absorption
    • G01N23/18—Investigating the presence of flaws defects or foreign matter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285—Testing apparatus
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/309—Accessories, mechanical or electrical features support of sample holder
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/30—Accessories, mechanical or electrical features
    • G01N2223/33—Accessories, mechanical or electrical features scanning, i.e. relative motion for measurement of successive object-parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/629—Specific applications or type of materials welds, bonds, sealing compounds
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/60—Specific applications or type of materials
    • G01N2223/645—Specific applications or type of materials quality control
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present disclosure relates to the field of nondestructive testing, and in particular to a testing device and a testing method for battery cell testing.
  • the detector and the optical machine scan the battery cell statically, and the position accuracy and deformation of the battery cell corners to be detected are required to be high. During the detection process, it is affected by objective factors such as the battery cell position and battery cell corner deformation, resulting in difficulty in improving the detection quality and a high misjudgment rate.
  • the detection device includes: a support mechanism, a rotating mechanism, a transmission mechanism and a detection mechanism.
  • the rotating mechanism is arranged on the support mechanism, and the rotating mechanism includes: a rotating bracket and a rotating disk, the rotating bracket is arranged on the support mechanism, and the rotating disk can rotate circumferentially relative to the rotating bracket;
  • the transmission mechanism passes through the rotating disk, and the transmission mechanism is suitable for transmitting the battery cell;
  • the detection mechanism is arranged on the rotating disk, and the detection mechanism includes: a ray source and a detector, the ray source and the detector are suitable for detecting the battery cell on the transmission mechanism, and the ray source and the detector are suitable for circumferential rotation on the rotating disk.
  • the rotating disk is provided with two radial moving mechanisms arranged opposite to each other, and the radial moving mechanisms can move closer to or farther away from the center of the rotating disk along the radial direction of the rotating disk.
  • the ray source and the detector are arranged on the radial moving mechanism so that the ray source and the detector can switch between the detection position and the avoidance position.
  • the rotating mechanism further includes: a position sensor, which can detect the position of the battery cell on the conveying mechanism.
  • the detection mechanism further includes: a screening mechanism, wherein the screening mechanism is suitable for transferring the battery cell to a waste area when the detection mechanism detects that the battery cell is unqualified.
  • the detection method is applicable to detecting the battery cell by a detection device, and the detection method comprises: placing the battery cell on a conveying mechanism; the conveying mechanism conveys the battery cell to a detection area; and the detection mechanism detects the battery cell.
  • the battery cell when placing the battery cell on the conveying mechanism, the battery cell is placed at a preset angle, wherein the preset angle is 15°-75°.
  • the detection mechanism before the detection mechanism detects the battery cell, it also includes: the position sensor detects the position of the battery cell; if the position of the battery cell does not interfere with the detection mechanism, the transmission mechanism transmits the battery cell to the detection area; if the position of the battery cell interferes with the detection mechanism, the detection mechanism avoids it.
  • the detection mechanism detects the battery cell, it also includes: the rotating disk drives the radiation source and the detector to rotate a certain angle to avoid the battery cell; the conveying mechanism conveys the battery cell to the detection area; the rotating disk drives the radiation source and the detector to rotate circumferentially to detect the battery cell; the conveying mechanism conveys the battery cell out of the detection area.
  • the detection mechanism before the detection mechanism detects the battery cell, it also includes: a rotating disk drives the radiation source and the detector to rotate circumferentially; the radiation source and the detector switch from the detection position to the avoidance position; the transmission mechanism transmits the battery cell to the detection area; the radiation source and the detector switch from the avoidance position to the detection position; the rotating disk drives the radiation source and the detector to rotate circumferentially to detect the battery cell; the transmission mechanism transmits the battery cell out of the detection area.
  • the screening mechanism transfers the unqualified battery cells to a waste area.
  • FIG1 is a front view of a detection device according to an embodiment of the first aspect of the present disclosure.
  • FIG2 is a top cross-sectional view of a detection device according to an embodiment of the first aspect of the present disclosure.
  • detection device 100 supporting mechanism 10, rotating mechanism 20, rotating bracket 21, rotating disk 22, radial moving mechanism 221, detection mechanism 23, radiation source 231, detector 232, rotating connector 24, position sensor 25, conveying mechanism 30, positioning module 31, first positioning portion 311, second positioning portion 312, screening mechanism 40, battery cell 200.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • the present disclosure provides a detection device, which can improve detection quality and detection efficiency while reducing the requirements for battery cell placement.
  • the rotating mechanism is arranged on the supporting mechanism, and the detecting mechanism is arranged on the rotating mechanism, the detecting mechanism can rotate circumferentially on the rotating mechanism, the conveying mechanism passes through the rotating disk, and the battery cell can pass through the rotating disk on the conveying mechanism, thereby realizing continuous detection of the battery cell.
  • the conveying mechanism first conveys the battery cell to the detection area, and the radiation source and the detector of the detection mechanism rotate circumferentially on the rotating disk, and then detects the battery cell located in the detection area.
  • the detection area is the area between the connecting line of the radiation source and the detector, and the detection mechanism can detect the battery cell in this area.
  • the detection mechanism can perform multi-directional detection on the battery cell by rotating circumferentially on the rotating disk, thereby detecting the alignment of the pole piece of each battery cell and the welding of the pole piece, and does not require the placement position and placement angle of the battery cell on the conveying mechanism. Therefore, the detection device can improve the detection quality and detection efficiency while reducing the placement requirements of the battery cell.
  • the present disclosure also aims to provide a detection method for telecommunication detection, wherein the detection method uses the above detection device to detect a battery cell.
  • the following describes a detection device 100 and a detection method for detecting a battery cell 200 according to an embodiment of the present disclosure with reference to FIGS. 1-2 .
  • the detection device 100 includes: a supporting mechanism 10 , a rotating mechanism 20 , a conveying mechanism 30 and a detection mechanism 23 .
  • the rotating mechanism 20 is arranged on the supporting mechanism 10, and the rotating mechanism 20 includes: a rotating bracket 21 and a rotating disk 22, the rotating bracket 21 is arranged on the supporting mechanism 10, and the rotating disk 22 can rotate circumferentially relative to the rotating bracket 21; the conveying mechanism 30 passes through the rotating disk 22, and the conveying mechanism 30 is suitable for conveying the battery cell 200; the detection mechanism 23 is arranged on the rotating disk 22, and the detection mechanism 23 includes: a ray source 231 and a detector 232, the ray source 231 and the detector 232 are suitable for detecting the battery cell 200 on the conveying mechanism 30, and the ray source 231 and the detector 232 are suitable for circumferential rotation on the rotating disk 22.
  • the rotating mechanism 20 is arranged on the supporting mechanism 10, and the detecting mechanism 23 is arranged on the rotating mechanism 20.
  • the detecting mechanism 23 can rotate circumferentially on the rotating mechanism 20.
  • the conveying mechanism 30 passes through the rotating disk 22, and the battery cell 200 can pass through the rotating disk 22 on the conveying mechanism 30, thereby realizing continuous detection of the battery cell 200.
  • the detecting device 100 is required to detect the battery cell 200, firstly, the conveying mechanism 30 conveys the battery cell 200 to the detection area, and the radiation source 231 and the detector 232 of the detecting mechanism 23 rotate circumferentially on the rotating disk 22, and then detects the battery cell 200 located in the detection area.
  • the detection area is the area between the line connecting the radiation source 231 and the detector 232, and the detecting mechanism 23 can detect the battery cell 200 in this area.
  • the detection mechanism 23 can perform multi-directional detection on the battery cells 200 by rotating circumferentially on the rotating disk 22, thereby detecting the electrode alignment and welding conditions of each battery cell 200, and no requirements are made on the placement position and placement angle of the battery cells 200 on the conveying mechanism 30.
  • the rotating mechanism 20 is arranged on the supporting mechanism 10 through the rotating bracket 21.
  • the rotating bracket 21 can support the rotating disk 22.
  • the rotating disk 22 can rotate circumferentially on the rotating bracket 21.
  • the ray source 231 and the detector 232 are fixed on the rotating disk 22 and can rotate synchronously with the rotating disk 22.
  • the ray source 231 and the detector 232 can rotate circumferentially around the battery cell 200 located in the detection area to perform beam scanning on the battery cell 200 in multiple directions.
  • the battery cell 200 located in the detection area can be scanned in multiple directions, thereby improving the detection quality of the battery cell 200.
  • the detection device 100 can improve the detection quality and detection efficiency while reducing the placement requirements of the battery cells 200.
  • the detection device 100 further includes a detection control system, which includes:
  • the rotating mechanism 20 controls the rotating disk to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;
  • the radiation source 231 and the detector 232 are switched from the detection position to the avoidance position to avoid the battery cell 200 .
  • the rotating mechanism 20 further includes: a rotating connector 24, which is disposed between the rotating bracket 21 and the rotating disk 22 to reduce the resistance between the rotating bracket 21 and the rotating disk 22 so that the rotating disk 22 can rotate freely.
  • the rotating connector 24 can be a combination of a circular slide rail and a circular slider, or a bearing disposed between the rotating bracket 21 and the rotating disk 22 .
  • the rotating connecting member 24 is a circular slide rail and a circular slider
  • the circular slide rail can be set on one of the rotating bracket 21 and the rotating disk 22
  • the circular slider can be set on the other of the rotating bracket 21 and the rotating disk 22.
  • the circular slide rail and the circular slider are engaged with each other, so that the rotating disk 22 can rotate freely on the rotating bracket 21.
  • the rotating mechanism 20 further includes: a driving motor, a driving gear and a driven gear portion, wherein the driving motor is fixed to the rotating bracket 21, the driving gear is arranged on the motor shaft of the driving motor, and the driven gear portion is arranged on the outer side of the rotating disk 22, and the driving gear is meshed with the driven gear portion.
  • the rotating disk 22 can rotate circumferentially under the drive of the driving motor, thereby improving the detection efficiency of the battery cell 200.
  • the driven gear portion may be a full circle of external teeth arranged on the outside of the rotating disk 22, or may be a partial external teeth arranged on the outside of the rotating disk 22.
  • the rotating disk 22 can perform continuous circumferential rotation under the drive of the driving motor, and when the driven gear portion is a partial external teeth arranged on the outside of the rotating disk 22, the rotating disk 22 can perform reciprocating rotation at a certain angle under the drive of the driving motor, and the selection can be made according to actual needs.
  • two radial moving mechanisms 221 are disposed opposite to each other on the rotating disk 22, and the radial moving mechanisms 221 can move closer to or farther away from the center of the rotating disk 22 along the radial direction of the rotating disk 22.
  • the ray source 231 and the detector 232 are disposed on the radial moving mechanisms 221, so that the ray source 231 and the detector 232 can switch between the detection position and the avoidance position.
  • the ray source 231 and the detector 232 can be moved respectively in the diameter direction of the rotating disk 22 to achieve mutual approach or distance.
  • the ray source 231 and the detector 232 are close to the center of the rotating disk 22, they can be moved to the detection position. At this time, the distance between the ray source 231 and the detector 232 is relatively close, and the detection accuracy is relatively high.
  • the ray source 231 and the detector 232 are far away from the center of the rotating disk 22, they can be moved to the avoidance position. At this time, the distance between the ray source 231 and the detector 232 is relatively far.
  • the conveying mechanism 30 conveys the battery cell 200 to the detection area, the corners of the battery cell 200 may interfere with the detection mechanism 23.
  • the battery cell 200 can be avoided to prevent damage to the battery cell 200 and the detection mechanism 23.
  • the safety of the detection can be improved while ensuring the detection accuracy.
  • the conveying mechanism 30 further includes a plurality of positioning modules 31 arranged at intervals, and the positioning modules 31 are suitable for positioning the battery cells 200.
  • the positioning modules 31 can be used to position the battery cells 200 so that the measured corners of each battery cell 200 are in a suitable position.
  • the conveying mechanism 30 moves the battery cells 200 to the detection area, it is ensured that the detection corners of each battery cell 200 are in the same position, thereby improving the detection accuracy.
  • the positioning module 31 includes a first positioning portion 311 and a second positioning portion 312, the first positioning portion 311 and the second positioning portion 312 are perpendicular to each other, and the first positioning portion 311 and the second positioning portion 312 are both fixed on the conveying mechanism 30, and a positioning space is formed inside the angle formed by the first positioning portion 311 and the second positioning portion 312, and the corners of the battery cell 200 to be tested can be placed in the positioning space, and the adjacent two sides of the battery cell 200 are respectively stopped against the first positioning portion 311 and the second positioning portion 312.
  • the battery cell 200 when the battery cell 200 needs to be inspected, the battery cell 200 is placed on the conveying mechanism 30, and one corner of the battery cell 200 is placed in the positioning space, and the two adjacent sides of the corner are respectively stopped against the first positioning portion 311 and the second positioning portion 312. At this time, the battery cell 200 can be fixed on the conveying mechanism 30. In this way, the battery cells 200 can be placed in sequence to ensure the regular placement of the battery cells 200.
  • the detection mechanism 23 when the detection mechanism 23 is used to detect the corners of the battery cell 200 later, the detection can be performed without adjusting the position of the battery cell 200, thereby improving the detection efficiency while ensuring the detection accuracy.
  • the positioning module 31 can be connected to the transmission mechanism 30 by bonding, screwing or snapping, which can be selected according to actual needs.
  • first positioning portion 311 and the second positioning portion 312 can be grooves or protrusions formed on the conveying mechanism 30.
  • the corners of the battery cell 200 can be placed into the grooves or protrusions, so that the position of the battery cell 200 can be fixed.
  • the positioning module 31 when the positioning module 31 is fixed to the conveying mechanism 30 , it has a preset angle, wherein the preset angle is 0°-75°.
  • the preset angle can be 0°, 5°, 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°, and can be set according to actual needs.
  • the positioning modules 31 can be set on the center line of the conveying mechanism 30 and spaced apart.
  • the positioning modules 31 can also be set side by side on both sides of the center line of the conveying mechanism 30. The selection can be made according to actual needs.
  • the placement of the battery cells 200 on the conveying mechanism 30 is also different.
  • the positioning module 31 When the positioning module 31 is arranged on the center line of the conveying mechanism 30 and is arranged equidistantly, in order to ensure the detection quality of the detection mechanism 23 on the battery cell 200, the positioning module 31 can be set to a preset angle so that the detection mechanism 23 can detect the corners of the battery cell 200.
  • the battery cell 200 can be placed in the positioning space by placing the corners and the adjacent two sides of the corners are respectively stopped by the first positioning part 311 and the second positioning part 312. At this time, multiple battery cells 200 can be placed equidistantly on the conveying mechanism 30.
  • the battery cell 200 is also placed at an angle of 45° on the conveying mechanism 30.
  • the detection mechanism 23 can perform circumferential detection on the corners of the battery cell 200, thereby improving the detection accuracy.
  • the positioning module 31 When the positioning module 31 is arranged side by side on both sides of the center line of the conveying mechanism 30, the positioning module 31 can set the preset angle to 0° and place it diagonally, so that the two battery cells 200 can be fixed at the same time.
  • the rotating mechanism 20 When a rotating table is provided in the detection device 100, the rotating mechanism 20 can be set to a certain angle through the rotating table so that the detection mechanism 23 forms a certain angle with the center of the conveying mechanism 30.
  • two battery cells 200 are arranged on the conveying mechanism 30. Under the constraint of the positioning module 31, the two battery cells 200 are diagonally arranged on both sides of the center line of the conveying mechanism 30 for connection.
  • the detection mechanism 23 can detect the corners of the two battery cells 200 at the same time, thereby improving the detection efficiency.
  • the rotating mechanism 20 further includes: a position sensor 25, which can detect the position of the battery cell 200 on the conveying mechanism 30.
  • the position sensor 25 can detect the position of the battery cell 200 on the conveying mechanism 30.
  • the position sensor 25 is connected to the rotating mechanism 20 signal. Before the conveying mechanism 30 conveys the battery cell 200 into the detection area, the position sensor 25 performs detection.
  • the position sensor 25 detects that the position of the battery cell 200 is about to interfere with the detection mechanism 23, it sends an avoidance signal to the rotating mechanism 20, and the rotating disk 22 drives the ray source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200.
  • the rotating disk 22 drives the ray source 231 and the detector 232 to continue to rotate circumferentially.
  • the battery cell 200 when the battery cell 200 is being inspected, the battery cell 200 can be prevented from colliding with the inspection mechanism 23 , thereby improving inspection safety.
  • the position sensor 25 may be an optical position sensor 25 , an ultrasonic position sensor 25 , a light curtain sensor, or a camera.
  • the position sensor 25 is an optical position sensor 25
  • a light beam is emitted through the transmitter. If the battery cell 200 located on the transmission mechanism 30 interferes with the rotating mechanism 20, the light beam emitted by the transmitter will be reflected back to the optical position sensor 25 when it touches the battery cell 200. At this time, the sensor can calculate the distance between the rotating mechanism 20 and the battery cell 200. When the distance between the two is less than the set threshold, the optical position sensor 25 sends an avoidance signal to the rotating mechanism 20, and the rotating disk 22 drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200.
  • the rotating disk 22 drives the radiation source 231 and the detector 232 to continue to rotate circumferentially.
  • the light curtain sensor can be set upstream of the rotating mechanism 20 and near the conveying mechanism 30.
  • the light curtain sensor detects that the light curtain is blocked, the light curtain sensor sends an avoidance signal to the rotating mechanism 20, and the rotation drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200.
  • the rotating disk 22 drives the radiation source 231 and the detector 232 to continue circumferential rotation.
  • the position sensor 25 is a camera
  • the camera can be set on the rotating bracket 21.
  • the camera can photograph the battery cell 200 located on the conveying mechanism 30.
  • By identifying the position of the battery cell 200 in the image it can be determined when the battery cell 200 interferes with the rotating mechanism 20.
  • the camera sends an avoidance signal to the rotating mechanism 20, and the rotating disk 22 drives the radiation source 231 and the detector 232 to stop circumferential rotation and avoid the battery cell 200.
  • the camera sends a signal to the rotating disk 22, and the rotating disk 22 drives the radiation source 231 and the detector 232 to continue to rotate circumferentially.
  • the position sensor 25 there is no specific restriction on the position of the position sensor 25 on the detection device 100. As long as the position sensor 25 can detect whether the battery cell 200 collides with the rotating mechanism 20, it can be set as needed.
  • the detection mechanism 23 further includes: a screening mechanism 40 , and the screening mechanism 40 is suitable for transferring the battery cell 200 to a waste area when the detection mechanism 23 detects that the battery cell 200 is unqualified.
  • the screening mechanism 40 is adapted to transfer the unqualified battery cell 200 to the waste area when the detection mechanism 23 detects that the battery cell 200 is unqualified. After the detection mechanism 23 completes the detection of the battery cell 200, if the internal defect of the battery cell 200 does not meet the requirements, the screening mechanism 40 can screen out the unqualified battery cell 200 on the conveying mechanism 30 and transfer it to the waste area, so that the qualified battery cell 200 can enter the next process. In this way, the detection efficiency of the detection device 100 can be improved.
  • the detection system corresponding to the detection device 100 in the present disclosure can number the battery cells 200 detected by the detection device 100 one by one.
  • the screening mechanism 40 transfers the unqualified battery cells 200 to the waste area, the detection system will also eliminate the numbers and images corresponding to the unqualified battery cells 200.
  • the battery cell 200 is firstly inspected by the inspection mechanism 23 under the transmission of the transmission mechanism 30. If the inspection mechanism 23 detects that the battery cell 200 is unqualified, the screening mechanism 40 transfers the battery cell 200 to the waste area. At the same time, in the inspection system, the number and image corresponding to the unqualified battery cell 200 are removed. When the battery cell 200 passes the inspection of the inspection mechanism 23 and is judged to be qualified, the qualified battery cell 200 can enter the next step. In this way, the system resource occupancy rate can be reduced, and the inspection device 100 has a higher inspection efficiency.
  • the detection method is applicable to the detection device 100 of any one of the above embodiments, and the detection method includes: placing the battery cell 200 on the conveying mechanism 30; the conveying mechanism 30 conveys the battery cell 200; and the detection mechanism 23 detects the battery cell 200.
  • the battery cell 200 when placing the battery cell 200 on the conveying mechanism 30 , the battery cell 200 is placed at a preset angle, wherein the preset angle is 15°-75°.
  • the center line of the battery cell 200 can have a certain angle with the extension direction of the conveying mechanism 30, that is, the battery cell 200 is placed on the conveying mechanism 30 at an angle, so that when the conveying mechanism 30 moves the battery cell 200 to the detection area, the corners of the battery cell 200 can be within the detection area.
  • the detection efficiency of the detection device 100 can be improved while improving the detection effect.
  • the preset angle can be 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, or 75°, and can be set according to actual needs.
  • the following describes a method for detecting the battery cell 200 according to a specific embodiment of the present disclosure.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the battery cell 200 is placed on the conveying mechanism 30 , and the battery cell 200 is placed at a preset angle;
  • the rotating disk 22 drives the radiation source 231 and the detector 232 to rotate in a circumferential direction.
  • the transmission mechanism 30 is extended and arranged parallel to the rotation axis of the detection mechanism 23, and the transmission mechanism 30 transmits the battery cell 200;
  • the position sensor 25 detects the position of the battery cell 200, and if it detects that the battery cell 200 will collide with the rotating mechanism 20 when entering the detection area, it sends an avoidance signal to the rotating mechanism 20;
  • the rotating mechanism 20 receives the avoidance signal from the position sensor 25, controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;
  • the conveying mechanism 30 conveys the battery cell 200 to the inspection area
  • the position sensor 25 detects the position of the battery cell 200, and sends a signal to the rotating mechanism 20 if the battery cell 200 is not detected or if it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20;
  • the rotating mechanism 20 After receiving the signal from the position sensor 25, the rotating mechanism 20 controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate in a circumferential direction to detect the battery cell 200;
  • the position sensor 25 detects the position of the battery cell 200, and if it is detected that the battery cell 200 will collide with the rotating mechanism 20 during the output process, an avoidance signal is sent to the rotating mechanism 20;
  • the rotating mechanism 20 receives the avoidance signal from the position sensor 25, controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate a certain angle to avoid the battery cell 200;
  • the conveying mechanism 30 conveys the battery cell 200 out of the detection area
  • the screening mechanism 40 transfers the unqualified battery cells 200 to a waste area.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the battery cell 200 is placed on the conveying mechanism 30 , and the battery cell 200 is placed at a preset angle;
  • the rotating disk 22 drives the radiation source 231 and the detector 232 to rotate in a circumferential direction.
  • the transmission mechanism 30 is extended and arranged parallel to the rotation axis of the detection mechanism 23, and the transmission mechanism 30 transmits the battery cell 200;
  • the position sensor 25 detects the position of the battery cell 200, and if it detects that the battery cell 200 will collide with the rotating mechanism 20 when entering the detection area, it sends an avoidance signal to the rotating mechanism 20;
  • the rotating mechanism 20 receives the avoidance signal from the position sensor 25, and the ray source 231 and the detector 232 switch from the detection position to the avoidance position to avoid the battery cell 200;
  • the conveying mechanism 30 conveys the battery cell 200 to the inspection area
  • the position sensor 25 detects the position of the battery cell 200, and sends a signal to the rotating mechanism 20 if the battery cell 200 is not detected or it is detected that the position of the battery cell 200 will not collide with the rotating mechanism 20;
  • the rotating mechanism 20 After the rotating mechanism 20 receives the signal from the position sensor 25, the ray source 231 and the detector 232 switch from the avoidance position to the detection position;
  • the rotating mechanism 20 controls the rotating disk 22 to drive the radiation source 231 and the detector 232 to rotate in a circumferential direction to detect the battery cell 200;
  • the position sensor 25 detects the position of the battery cell 200, and if it is detected that the battery cell 200 will collide with the rotating mechanism 20 during the output process, an avoidance signal is sent to the rotating mechanism 20;
  • the rotating mechanism 20 receives the avoidance signal from the position sensor 25, and the ray source 231 and the detector 232 switch from the detection position to the avoidance position to avoid the battery cell 200;
  • the conveying mechanism 30 conveys the battery cell 200 out of the detection area
  • the screening mechanism 40 transfers the unqualified battery cells 200 to a waste area.

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Abstract

一种检测装置（100）及用于电芯（200）的检测方法，检测装置（100）包括：支撑机构（10）、旋转机构（20）、传送机构（30）以及检测机构（23）。旋转机构（20）设置于支撑机构（10），旋转机构（20）包括旋转支架（21）和旋转盘（22），旋转支架（21）设置于支撑机构（10），旋转盘（22）可相对于旋转支架（21）进行周向转动；传送机构（30）穿过旋转盘（22），且传送机构（30）适于传送电芯（200）；检测机构（23）设置于旋转盘（22），检测机构（23）包括射线源（231）和探测器（232），射线源（231）与探测器（232）适于对传送机构（30）上的电芯（200）进行检测，且射线源（231）与探测器（232）适于在旋转盘（22）上进行周向旋转。

Description

检测装置及用于电芯检测的检测方法
本申请要求于2023年6月12日递交的中国专利申请No.202310695777.3的优先权，其内容一并在此作为参考。
技术领域
本公开涉及无损检测领域，具体涉及一种检测装置及用于电芯检测的检测方法。
 背景技术
随着锂电池的需求不断扩大，市场对锂电池品质的要求越来越高，当前对锂电池尤其是动力电池的一致性要求日趋严格。在一些相关技术中，使用传统的工业CT方案，探测器与光机静止对电芯进行扫描，对要检测的电芯角位的位置精度以及角位的形变要求较高，在检测过程中受电芯位置、电芯角位变形等客观因素的影响，导致检测质量难以提升，且误判率过高。
发明内容
根据本公开第一方面实施例的检测装置，所述检测装置包括：支撑机构、旋转机构、传送机构以及检测机构。所述旋转机构设置于所述支撑机构，所述旋转机构包括：旋转支架和旋转盘，所述旋转支架设置于所述支撑机构，所述旋转盘可相对于所述旋转支架进行周向转动；所述传送机构穿过所述旋转盘，且所述传送机构适于传送电芯；所述检测机构设置于所述旋转盘，所述检测机构包括：射线源和探测器，所述射线源与所述探测器适于对所述传送机构上的所述电芯进行检测，且所述射线源与所述探测器适于在所述旋转盘上进行周向旋转。
在一些实施例中，所述旋转盘上设有两个相对设置的径向移动机构，所述径向移动机构可沿所述旋转盘的径向靠近或远离所述旋转盘的圆心。
进一步地，所述射线源与所述探测器设置在所述径向移动机构上，以使所述射线源与所述探测器在检测位置和所述避让位置之间切换。
在一些实施例中，所述旋转机构还包括：位置传感器，所述位置传感器可对传送机构上的所述电芯的位置进行检测。
在一些实施例中，所述检测机构还包括：筛选机构，所述筛选机构适于在所述检测机构检测到所述电芯不合格时将所述电芯转移至废料区。
根据本公开第二方面实施例的用于电芯检测的检测方法，所述检测方法适用于通过检测装置对电芯进行检测，所述检测方法包括：将电芯放置于传送机构；传送机构传送电芯至检测区域；检测机构对所述电芯进行检测。
在一些实施例中，在将所述电芯放置于所述传送机构时，将所述电芯摆放至预设角度，其中，所述预设角度为15°-75°。
在一些实施例中，所述检测机构对所述电芯进行检测前还包括：所述位置传感器对所述电芯的位置进行检测；若所述电芯的位置与所述检测机构不存在干涉，则所述传送机构传送所述电芯运动至检测区域；若所述电芯的位置与所述检测机构存在干涉，则检测机构进行避让。
进一步地，所述检测机构对所述电芯进行检测前还包括：旋转盘带动射线源与探测器转动一定角度，以对所述电芯进行避让；所述传送机构传送所述电芯运动至检测区域；所述旋转盘带动所述射线源与所述探测器进行周向转动以对所述电芯进行检测；所述传送机构传送所述电芯移出所述检测区域。
在一些实施例中，所述检测机构对所述电芯进行检测前还包括：旋转盘带动射线源与探测器进行周向转动；射线源与探测器由检测位置切换至避让位置；所述传送机构传送所述电芯运动至检测区域；所述射线源与所述探测器由所述避让位置切换至所述检测位置；所述旋转盘带动所述射线源与所述探测器进行周向转动以对所述电芯进行检测；所述传送机构传送所述电芯移出所述检测区域。
可选地，筛选机构将不合格的所述电芯转移至废料区。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
 附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是本公开第一方面实施例的检测装置的主视图。
图2是本公开第一方面实施例的检测装置的俯视剖面图。
附图标记：检测装置100、支撑机构10、旋转机构20、旋转支架21、旋转盘22、径向移动机构221、检测机构23、射线源231、探测器232、旋转连接件24、位置传感器25、传送机构30、定位模组31、第一定位部311、第二定位部312、筛选机构40、电芯200。
 具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。此外，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本公开的描述中，除非另有说明，“多个”的含义是两个或两个以上。
在本公开的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本公开中的具体含义。
本公开提出一种检测装置，所述检测装置可在降低电芯摆放需求的同时，提高检测质量以及检测效率。
根据本公开第一方面实施例的检测装置，旋转机构设置在支撑机构上，且旋转机构上设置有检测机构，检测机构可在旋转机构上进行周向旋转，传送机构穿过旋转盘，电芯可在传送机构上穿过旋转盘，从而实现电芯的连续检测。当需要检测装置对电芯进行检测时，首先传送机构将电芯传送至检测区域，检测机构的射线源与探测器在旋转盘上进行周向旋转，进而对位于检测区域内的电芯进行检测，需要说明的是，检测区域为射线源与探测器连线之间的区域，检测机构在此区域可对电芯进行检测。检测机构通过在旋转盘上进行周向旋转，可对电芯进行多方位检测，从而对每个电芯的极片对齐情况以及极片的焊接情况进行检测，并且对电芯在传送机构上的摆放位置以及摆放角度不做要求。由此，检测装置可在降低电芯摆放需求的同时，提高检测质量以及检测效率。
本公开还旨在提出一种用于电信检测的检测方法，所述检测方法使用上述检测装置对电芯进行检测。
下面参考图1-图2描述根据本公开实施例的检测装置100及用于电芯200检测的检测方法。
如图1-图2所示，根据本公开第一方面实施例的检测装置100，检测装置100包括：支撑机构10、旋转机构20、传送机构30以及检测机构23。
其中，旋转机构20设置于支撑机构10，旋转机构20包括：旋转支架21和旋转盘22，旋转支架21设置于支撑机构10，旋转盘22可相对于旋转支架21进行周向转动；传送机构30穿过旋转盘22，且传送机构30适于传送电芯200；检测机构23设置于旋转盘22，检测机构23包括：射线源231和探测器232，射线源231与探测器232适于对传送机构30上的电芯200进行检测，且射线源231与探测器232适于在旋转盘22上进行周向旋转。
具体而言，旋转机构20设置在支撑机构10上，且旋转机构20上设置有检测机构23，检测机构23可在旋转机构20上进行周向旋转，传送机构30穿过旋转盘22，电芯200可在传送机构30上穿过旋转盘22，从而实现电芯200的连续检测。当需要检测装置100对电芯200进行检测时，首先传送机构30将电芯200传送至检测区域，检测机构23的射线源231与探测器232在旋转盘22上进行周向旋转，进而对位于检测区域内的电芯200进行检测，需要说明的是，检测区域为射线源231与探测器232连线之间的区域，检测机构23在此区域可对电芯200进行检测。检测机构23通过在旋转盘22上进行周向旋转，可对电芯200进行多方位检测，从而对每个电芯200的极片对齐情况以及极片的焊接情况进行检测，并且对电芯200在传送机构30上的摆放位置以及摆放角度不做要求。
旋转机构20通过旋转支架21设置在支撑机构10上，旋转支架21可对旋转盘22进行支撑，旋转盘22可在旋转支架21上进行周向转动，射线源231与探测器232固定于旋转盘22上，且可跟随旋转盘22进行同步转动，在对电芯200进行检测时，射线源231与探测器232可对围绕位于检测区域内的电芯200进行周向转动，以在多个方位对电芯200进行出束扫描。通过旋转盘22带动射线源231与探测器232进行周向转动，可对位于检测区域内的电芯200进行多方位扫描，从而提高电芯200检测质量。
根据本公开第一方面实施例的检测装置100，检测装置100可在降低电芯200摆放需求的同时，提高检测质量以及检测效率。
可选地，检测装置100还包括检测控制系统，检测控制系统包括：
若电芯200在进入检测区域时将与旋转机构发生碰撞，旋转机构20控制旋转盘带动射线源231与探测器232转动一定角度，对电芯200进行避让；
若电芯200在进入检测区域时将与旋转机构发生碰撞，射线源231与探测器232由检测位置切换至避让位置，对电芯200进行避让。
进一步地，所述旋转机构20还包括：旋转连接件24，旋转连接件24设置在旋转支架21与旋转盘22之间，降低旋转支架21与旋转盘22之间的阻力，以使旋转盘22进行自由转动。
需要说明的是，这里对旋转连接件24的结构不做具体限制，旋转连接件24可以为圆形滑轨与圆形滑块的组合件，也可以为设置于旋转支架21与旋转盘22之间的轴承。
当旋转连接件24为圆形滑轨与圆形滑块时，圆形滑轨可设置于旋转支架21与旋转盘22的其中一个上，圆形滑块可设置在旋转支架21与旋转盘22的另一个上，圆形滑轨与圆形滑块相互啮合，可使旋转盘22在旋转支架21上进行自由转动。
可选地，所述旋转机构20还包括：驱动电机、驱动齿轮与从动齿部，驱动电机固定在旋转支架21上，驱动齿轮设置在驱动电机的电机轴上，从动齿部设置在旋转盘22的外侧，驱动齿轮与从动齿部啮合。由此，旋转盘22可在驱动电机的驱动下进行周向转动，进而提高电芯200的检测效率。
需要说明的是，从动齿轮部可以为设置在旋转盘22外侧的一整圈外齿，也可以为设置在旋转盘22外侧的部分外齿。当从动齿部为设置在旋转盘22外侧的一整圈外齿时，旋转盘22可在驱动电机的驱动下进行连续的周向转动，当从动齿部为设置在旋转盘22外侧的部分外齿时，旋转盘22可在驱动电机的驱动下进行一定角度的往复转动，可根据实际需要进行选择。
在一些实施例中，旋转盘22上设有两个相对设置的径向移动机构221，径向移动机构221可沿旋转盘22的径向靠近或远离旋转盘22的圆心。射线源231与探测器232设置在径向移动机构221上，以使射线源231与探测器232在检测位置和避让位置之间切换。
具体而言，通过径向移动机构221，射线源231与探测器232可分别在旋转盘22的直径方向进行移动，以实现相互靠近或相互远离，当射线源231与探测器232均向旋转盘22的圆心处靠近时，可移动至检测位置，此时射线源231与探测器232的距离较近，具有较高的检测精度，当射线源231与探测器232均远离旋转盘22的圆心时，可移动至避让位置，此时射线源231与探测器232的距离较远，当传送机构30将电芯200传送至检测区域时，电芯200的边角可能会与检测机构23发生干涉，通过将射线源231与探测器232切换至避让位置，可对电芯200形成避让，防止对电芯200以及检测机构23造成损坏。
由此，通过使射线源231与探测器232在检测位置和避让位置之间切换，可在保证检测精度的同时，提高检测的安全性。
进一步地，传送机构30还包括间隔设置的多个定位模组31，定位模组31适于对电芯200进行定位。在将电芯200摆放在传送机构30上时，可通过定位模组31对电芯200进行定位，使每个电芯200的被测边角均处于合适位置，在传送机构30将电芯200移动至检测区域时，保证每个电芯200的检测边角均处于同一位置，进而提高检测精度。
可选地，定位模组31包括第一定位部311和第二定位部312，第一定位部311与第二定位部312相互垂直，且第一定位部311与第二定位部312均固定于传送机构30上，第一定位部311与第二定位部312的形成夹角内侧形成定位空间，待测电芯200的边角可置于定位空间内，且电芯200的相邻两边分别与第一定位部311和第二定位部312相互止抵。
具体而言，当需要对电芯200进行检测时，将电芯200放置在传送机构30上，且将电芯200的一个边角放置在定位空间内，并将边角的相邻两边分别与第一定位部311和第二定位部312止抵，此时电芯200可固定在传送机构30上，以此方法依次对电芯200进行放置，可保证电芯200的摆放规律。
由此，在后续通过检测机构23对电芯200边角进行检测时，无需调整电芯200位置即可检测，在保证检测精度的同时，提高检测效率。
需要说明的是，这里对定位模组31与传送机构30的连接方式不做具体限制，例如定位模组31可通过粘接、螺接或卡接的方式与传送机构30进行连接，可根据实际需要选择。
进一步可选地，第一定位部311和第二定位部312可以为形成于传送机构30上的凹槽或凸起，在将电芯200放置在传送机构30上时，可将电芯200的边角放入凹槽或凸起内，这样即可对电芯200的位置进行固定。
可选地，定位模组31固定于传送机构30时，具有预设角度，其中预设角度为0°-75°。
示例性地，预设角度可以为0°、5°、10°、15°、20°、25°、30°、35°、40°、45°、50°、55°、60°、65°、70°、75°，可根据实际需要进行设置。
需要说明的是，这里对定位模组31在传送机构30上的数量以及设置位置不做具体限制，例如定位模组31可设置在传送机构30中线并间隔设置，定位模组31还可设置在传送机构30的中线两侧并排设置，可根据实际需要进行选择。
可以理解的是，根据定位模组31设置方式的不同，电芯200在传送机构30上的摆放方式也不同。
[根据细则91更正 04.03.2024]
当定位模组31设置在传送机构30的中线上并等距设置时，为保证检测机构23对电芯200的检测质量，可将定位模组31设置成预设角度，以使检测机构23可对电芯200的边角进行检测，电芯200可通过将边角放置在定位空间内，并将边角的相邻两边分别与第一定位部311和第二定位部312止抵，此时多个电芯200可等距放置在传送机构30上。如图2所示，若示例性地将定位模组31的预设角度设置为45°，电芯200在传送机构30上也为倾斜45°摆放，当传送机构30将电芯200传送至检测区域时，检测机构23可对电芯200的边角进行周向检测，进而提高检测精度。
当定位模组31设置在传送机构30的中线两侧并排设置时，定位模组31可将预设角度设为0°且对角放置，这样可同时对两个电芯200进行固定，当检测装置100中设置有旋转台时，可通过旋转台将旋转机构20设置一定角度，使检测机构23与传送机构30的中心形成一定夹角，此时传送机构30上设置有两个电芯200，两个电芯200在定位模组31的约束下为收尾相连的对角设置在传送机构30的中线两侧，检测机构23可同时对两个电芯200的边角进行检测，进而提高检测效率。
在一些实施例中，旋转机构20还包括：位置传感器25，位置传感器25可对传送机构30上的电芯200的位置进行检测。通过位置传感器25，可对传送机构30上电芯200的位置进行检测，位置传感器25与旋转机构20信号连接，在传送机构30传送电芯200进入检测区域之前，位置传感器25进行检测，当位置传感器25检测到电芯200的位置与检测机构23即将发生干涉时，则向旋转机构20发送避让信号，旋转盘22带动射线源231与探测器232停止周向转动并对电芯200进行避让，当位置传感器25检测到电芯200位置与检测机构23不会发生干涉或未检测到电芯200时，旋转盘22带动射线源231与探测器232继续进行周向转动。
由此，可在电芯200检测时防止电芯200与检测机构23发生碰撞，提高检测安全性。
需要说明的是，这里对位置传感器25的种类不做具体限制，例如位置传感器25可以为光学位置传感器25、超声波位置传感器25、光幕传感器以及摄像头。
当位置传感器25为光学位置传感器25时，通过发射器发射光束，若位于传送机构30上的电芯200与旋转机构20干涉，发射器发射的光束在触碰到电芯200时则会反射回光学位置传感器25，此时传感器可计算出旋转机构20与电芯200之间的距离，当二者距离小于设定阈值时，光学位置传感器25向旋转机构20发送避让信号，旋转盘22带动射线源231与探测器232停止周向转动并对电芯200进行避让，当光学位置传感器25未接收到反射信号，或接收到信号后通过计算，电芯200与旋转机构20之间的距离大于等于设定阈值时，旋转盘22带动射线源231与探测器232继续进行周向转动。
当位置传感器25为光幕传感器时，光幕传感器可设置于旋转机构20的上游，并设置在传送机构30附近，当光幕传感器检测到光幕被遮挡时，光幕传感器向旋转机构20发送避让信号，旋转带动射线源231与探测器232停止周向转动并对电芯200进行避让，当光幕传感器检测到光幕未被遮挡时，旋转盘22带动射线源231与探测器232继续进行周向转动。
当位置传感器25为摄像头时，摄像头可设置在旋转支架21上，摄像头可对位于传送机构30上的电芯200进行拍摄，通过识别图像中的电芯200位置，可判断电芯200与旋转机构20时候干涉，当通过摄像头拍摄的图像计算得出电芯200将与旋转机构20发生碰撞时，摄像头向旋转机构20发送避让信号，旋转盘22带动射线源231与探测器232停止周向转动并对电芯200进行避让，当摄像头拍摄的图像中未出现电芯200或通过摄像头拍摄的图像计算得出电芯200与旋转机构20不会发生碰撞时，摄像头向旋转盘22机构发送信号，旋转盘22带动射线源231与探测器232继续进行周向转动。
需要说明的是，这里对位置传感器25在检测装置100上的位置不做具体限制，只要保证位置传感器25可对电芯200与旋转机构20是否发生碰撞进行检测即可，可根据需要进行设置。
在一些实施例中，检测机构23还包括：筛选机构40，筛选机构40适于在检测机构23检测到电芯200不合格时将电芯200转移至废料区。
具体而言，筛选机构40适于在检测机构23检测到电芯200不合格时，将不合格电芯200转移至废料区。在检测机构23对电芯200检测完成后，若电芯200内部缺陷情况无法满足要求，筛选机构40可在传送机构30上将不合格的电芯200筛选出，并转移至废料区，以便合格的电芯200进入下一步工序。由此，可提高检测装置100的检测效率。
可以理解的是，在本公开中与检测装置100对应的检测系统，可对检测装置100检测的电芯200进行一一对应编号，当筛选机构40将不合格电芯200转移至废料区时，检测系统将与该不合格电芯200对应的的编号以及图像也随之剔除。
也就是说，电芯200首先在传送机构30的传送下被检测机构23检测，若检测机构23检测到该电芯200不合格，筛选机构40则将该电芯200转移至废料区，与此同时在检测系统内，与不合格电芯200对应的编号以及图像被剔除，当电芯200通过检测机构23的检测，并判断为合格时，可使合格电芯200进入下一步工序。由此，可降低系统资源占用率，进而使检测装置100具有更高的检测效率。
根据本公开第二方面实施例的用于电芯200检测的检测方法，检测方法适用于上述实施例中任一项的检测装置100，检测方法包括：将电芯200放置于传送机构30；传送机构30传送电芯200；检测机构23对电芯200进行检测。
在一些实施例中，在将电芯200放置于传送机构30时，将电芯200摆放至预设角度，其中，预设角度为15°-75°。
具体而言，将电芯200摆放至预设角度，可使电芯200的中心线与传送机构30延伸方向具有一定角度，也就是将电芯200倾斜摆放在传送机构30上，这样在传送机构30将电芯200移动至检测区域时，可使电芯200的边角处于检测区域内。
由此，可在提高检测效果的同时提高检测装置100的检测效率。
示例性地，预设角度可以为15°、20°、25°、30°、35°、40°、45°、50°、55°、60°、65°、70°、75°，可根据实际需要进行设置。
下面根据本公开的具体实施例对电芯200的检测方法进行说明。
实施例一：
如图2所示，将电芯200放置于传送机构30，并将电芯200摆放至预设角度；
旋转盘22带动射线源231与探测器232进行周向转动，此时传送机构30平行于检测机构23的旋转轴心延伸设置，传送机构30对电芯200进行传送；
位置传感器25对电芯200位置进行检测，若检测到电芯200在进入检测区域时将与旋转机构20发生碰撞，则向旋转机构20发送避让信号；
旋转机构20接收到位置传感器25的避让信号，控制旋转盘22带动射线源231与探测器232转动一定角度，对电芯200进行避让；
传送机构30将电芯200传送至检测区域；
位置传感器25对电芯200位置进行检测，若未检测到电芯200或检测到电芯200位置不会与旋转机构20发生碰撞，则向旋转机构20发送信号；
旋转机构20接收到位置传感器25的信号后，控制旋转盘22带动射线源231与探测器232进行周向转动对电芯200进行检测；
在扫描完成后，位置传感器25对电芯200位置进行检测，若检测到电芯200在输出过程中将与旋转机构20发生碰撞，则向旋转机构20发送避让信号；
旋转机构20接收到位置传感器25的避让信号，控制旋转盘22带动射线源231与探测器232转动一定角度，对电芯200进行避让；
传送机构30传送电芯200移出检测区域；
筛选机构40将不合格的所述电芯200转移至废料区。
实施例二：
如图2所示，将电芯200放置于传送机构30，并将电芯200摆放至预设角度；
旋转盘22带动射线源231与探测器232进行周向转动，此时传送机构30平行于检测机构23的旋转轴心延伸设置，传送机构30对电芯200进行传送；
位置传感器25对电芯200位置进行检测，若检测到电芯200在进入检测区域时将与旋转机构20发生碰撞，则向旋转机构20发送避让信号；
旋转机构20接收到位置传感器25的避让信号，射线源231与探测器232由检测位置切换至避让位置，对电芯200进行避让；
传送机构30将电芯200传送至检测区域；
位置传感器25对电芯200位置进行检测，若未检测到电芯200或检测到电芯200位置不会与旋转机构20发生碰撞，则向旋转机构20发送信号；
旋转机构20接收到位置传感器25的信号后，射线源231与探测器232由避让位置切换至检测位置；
旋转机构20控制旋转盘22带动射线源231与探测器232进行周向转动对电芯200进行检测；
在扫描完成后，位置传感器25对电芯200位置进行检测，若检测到电芯200在输出过程中将与旋转机构20发生碰撞，则向旋转机构20发送避让信号；
旋转机构20接收到位置传感器25的避让信号，射线源231与探测器232由检测位置切换至避让位置，对电芯200进行避让；
传送机构30传送电芯200移出检测区域；
筛选机构40将不合格的所述电芯200转移至废料区。
在本说明书的描述中，参考术语“实施例”、“示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (11)

  1. 一种检测装置，包括：
    支撑机构(10)；
    旋转机构(20)，所述旋转机构(20)设置于所述支撑机构(10)，所述旋转机构(20)包括：旋转支架(21)和旋转盘(22)，所述旋转支架(21)设置于所述支撑机构(10)，所述旋转盘(22)可相对于所述旋转支架(21)进行周向转动；
    传送机构(30)，所述传送机构(30)穿过所述旋转盘(22)，且所述传送机构(30)适于传送电芯(200)；
    检测机构(23)，所述检测机构(23)设置于所述旋转盘(22)，所述检测机构(23)包括：射线源(231)和探测器(232)，所述射线源(231)与所述探测器(232)适于对所述传送机构(30)上的所述电芯(200)进行检测，且所述射线源(231)与所述探测器(232)适于在所述旋转盘(22)上进行周向旋转。
  2. 根据权利要求1所述的检测装置，其中，所述旋转盘(22)上设有两个相对设置的径向移动机构(221)，所述径向移动机构(221)可沿所述旋转盘(22)的径向靠近或远离所述旋转盘(22)的圆心。
  3. 根据权利要求2所述的检测装置，其中，所述射线源(231)与所述探测器(232)设置在所述径向移动机构(221)上，以使所述射线源(231)与所述探测器(232)在检测位置和所述避让位置之间切换。
  4. 根据权利要求1所述的检测装置，其中，所述旋转机构(20)还包括：位置传感器(25)，所述位置传感器(25)可对传送机构(30)上的所述电芯(200)的位置进行检测。
  5. 根据权利要求1所述的检测装置，还包括：筛选机构(40)，所述筛选机构(40)适于在所述检测机构(23)检测到所述电芯(200)不合格时将所述电芯(200)转移至废料区。
  6. 一种用于电芯检测的检测方法，适用于权利要求1-5中任一项所述的检测装置，其中，所述检测方法包括：
    将电芯(200)放置于传送机构(30)；
    传送机构(30)传送电芯(200)至检测区域；
    检测机构(23)对所述电芯(200)进行检测。
  7. 根据权利要求6所述的检测方法，其中，在将所述电芯(200)放置于所述传送机构(30)时，将所述电芯(200)摆放至预设角度，其中，所述预设角度为15°-75°。
  8. 根据权利要求7所述的检测方法，其中，所述检测机构(23)对所述电芯(200)进行检测前还包括：
    所述位置传感器(25)对所述电芯(200)的位置进行检测；
    若所述电芯(200)的位置与所述检测机构(23)不存在干涉，则所述传送机构(30)传送所述电芯(200)运动至检测区域；
    若所述电芯(200)的位置与所述检测机构(23)存在干涉，则检测机构(23)进行避让。
  9. 根据权利要求8所述的检测方法，其中，所述检测机构(23)对所述电芯(200)进行检测前还包括：
    旋转盘(22)带动射线源(231)与探测器(232)转动一定角度，以对所述电芯(200)进行避让；
    所述传送机构(30)传送所述电芯(200)运动至检测区域；
    所述旋转盘(22)带动所述射线源(231)与所述探测器(232)进行周向转动以对所述电芯(200)进行检测；
    所述传送机构(30)传送所述电芯(200)移出所述检测区域。
  10. 根据权利要求8所述的检测方法，其中，所述检测机构(23)对所述电芯(200)进行检测前还包括：
    旋转盘(22)带动射线源(231)与探测器(232)进行周向转动；
    射线源(231)与探测器(232)由检测位置切换至避让位置；
    所述传送机构(30)传送所述电芯(200)运动至检测区域；
    所述射线源(231)与所述探测器(232)由所述避让位置切换至所述检测位置；
    所述旋转盘(22)带动所述射线源(231)与所述探测器(232)进行周向转动以对 所述电芯(200)进行检测；
    所述传送机构(30)传送所述电芯(200)移出所述检测区域。
  11. 根据权利要求9-10所述的检测方法，其中，筛选机构(40)将不合格的所述电芯(200)转移至废料区。
PCT/CN2024/077590 2023-06-12 2024-02-19 检测装置及用于电芯检测的检测方法 Ceased WO2024255293A1 (zh)

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