WO2022170522A1 - 电池焊点检测系统及其取像单元与检测方法 - Google Patents

电池焊点检测系统及其取像单元与检测方法 Download PDF

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Publication number
WO2022170522A1
WO2022170522A1 PCT/CN2021/076371 CN2021076371W WO2022170522A1 WO 2022170522 A1 WO2022170522 A1 WO 2022170522A1 CN 2021076371 W CN2021076371 W CN 2021076371W WO 2022170522 A1 WO2022170522 A1 WO 2022170522A1
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WIPO (PCT)
Prior art keywords
battery
camera
imaging device
mirror surface
solder joint
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PCT/CN2021/076371
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English (en)
French (fr)
Inventor
唐雨池
王新乐
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深圳市大疆创新科技有限公司
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Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2021/076371 priority Critical patent/WO2022170522A1/zh
Publication of WO2022170522A1 publication Critical patent/WO2022170522A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination

Definitions

  • the present application relates to the technical field of battery detection, and in particular, to a battery solder joint detection system and detection method.
  • the battery pack welding technology has developed rapidly with the large-scale application of batteries (such as lithium batteries) in recent years. From the initial manual soldering iron tip welding and ultrasonic welding, it has gradually developed into resistance spot welding and laser welding.
  • the procedure is mainly to stack and pre-fix the cells and battery protection plates before welding, and then carry out laser welding.
  • the completed inspection procedure is mainly realized by semi-automatic production equipment and manual visual inspection, in which the welded battery pack must be unstacked and pre-fixed first; then inspected through a microscope, and secondary stacking and fixing after the inspection is completed .
  • the pre-fixed structure of the battery cell and laser welding is often destroyed during the actual operation.
  • the flatness of the battery protection board cannot be controlled.
  • Various aspects of the present application provide a battery solder joint inspection system, which can effectively simplify complex procedures such as stacking and (pre-)fixing in existing inspection procedures, in addition to ensuring that sensitive devices on the battery will not be damaged during the inspection process
  • the inspection man-hours can be greatly shortened and automated inspection procedures can be realized.
  • An embodiment of the present application provides a battery solder joint detection system, including: an imaging unit, including an imaging device and a camera, wherein the imaging device has at least one obliquely arranged mirror surface for extending into a protective plate and a body of the battery The gap between them displays the mirror image of the solder joints on the protection board, the camera device corresponds to the mirror surface, and is used for capturing and outputting the mirror image; and an image processing unit, which is electrically connected to the mirror surface.
  • the camera device is used to receive the mirror image, compare it with the standard image in the memory, and output the comparison result.
  • the imaging device further comprises a base and a bracket, the bracket has opposite fixed ends and a free end, the fixed end is connected to the base, the free end extends along the radial direction of the base, the The mirror surface is obliquely arranged on the free end.
  • the camera device is arranged on a side of the free end away from the mirror surface.
  • the free end is provided with a plurality of struts arranged at intervals along the horizontal direction, each of the struts is provided with the mirror surface, and the camera device includes a camera group and a carrier, and the camera group can be Reciprocating movement along the horizontal direction on the carrier, selectively corresponding to the mirror surface of one of the struts.
  • the imaging unit further includes at least one stroke adjustment mechanism, which is electrically connected to the image processing unit and used to drive the battery or the imaging device to move, so that the battery and the imaging device are moved closer to each other. Or separate, wherein when the battery and the imaging device are brought closer to each other, the mirror surface protrudes into the gap and corresponds to the solder joint.
  • the imaging device and the camera device are arranged on the stroke adjustment mechanism and are separated by a predetermined distance, and the image processing unit is further configured to adjust the camera of the camera device to focus on the predetermined distance according to the predetermined distance. the focal length of the mirror.
  • the imaging unit includes two coaxially arranged travel adjustment mechanisms, one of which is set by the imaging device, and the other is set by the camera device, and the image processing unit is also used for setting according to the The distance between the imaging device and the imaging device is driven, and the stroke adjustment mechanism provided with the imaging device is driven to displace relative to the imaging device, so as to adjust the focal length of the camera head of the imaging device to focus on the mirror surface.
  • the battery welding point detection system further includes a conveying unit for conveying the battery to a predetermined position corresponding to the mirror surface, wherein the stroke adjusting mechanism is arranged on one side of the conveying unit and intersects with the predetermined location.
  • the transfer unit is provided with a carrier for holding the battery, the carrier is movably arranged on the transfer unit, and can rotate on the transfer unit to drive the protective plate belt
  • the side with the solder joint corresponds to the imaging device.
  • the battery solder joint detection system includes two imaging units, which are respectively disposed on two opposite sides of the conveying unit and intersect at the predetermined position, and both opposite sides of the protective plate have In the solder joints, the mirror surfaces of the two image capturing units respectively extend into the gap on two opposite sides of the protection board, and correspond to the solder joints on the opposite sides of the protection board.
  • the battery solder joint detection system further includes an identification unit, which is electrically connected to the graphic processing unit for identifying the information label configured on the battery, and transmits it to the image processing unit.
  • the image processing unit is further configured to receive the information marker, and establish association information between the information marker and the comparison result.
  • the embodiment of the present application also provides an imaging unit of a battery solder joint detection system, including: an imaging device having at least one obliquely arranged mirror surface for extending into the gap between the battery protection plate and the main body to display all the a mirror image of the solder joints on the protection board; and a camera device, corresponding to the mirror surface, for capturing and outputting the mirror image.
  • the embodiments of the present application also provide a method for detecting a solder joint of a battery, including: providing a battery; extending a mirror surface of an imaging device into a gap between a protective plate of the battery and a body, and presenting the mirror surface on the mirror surface Protecting the mirror image of the solder joints on the board; capturing and outputting the mirror image through a camera device; receiving the mirror image through an image processing unit, and comparing it with the standard image in the memory; and processing the image through the image processing unit The unit outputs the comparison result.
  • the detection method further includes: driving the imaging device toward or apart from the battery on the stroke adjustment mechanism by the image processing unit, so that the mirror surface extends into the gap or moves out from the gap ; and when the mirror surface extends into the gap, adjusting the focal length of the camera head of the camera device to focus on the mirror surface.
  • the detection method further comprises: driving the camera device to move forward and backward relative to the mirror on the stroke adjustment mechanism through the image processing unit, so as to adjust the focal length.
  • the detection method further includes: driving the camera device to horizontally displace relative to the mirror surface on the stroke adjustment mechanism through the image processing unit, so as to adjust the camera head on the same axis to correspond to the mirror surface .
  • the method before driving the imaging device to move closer to the battery, the method further comprises: conveying the battery to a predetermined position corresponding to the mirror surface through a transmission unit, wherein the stroke adjustment mechanism intersects with the transmission unit at the predetermined location.
  • the detection method further comprises: identifying and outputting the information label fiber configured on the battery by an identification unit; and receiving the information label fiber through the image processing unit, and establishing the information label fiber and the information label fiber Correlation information of the comparison results, the correlation information includes the qualification rate of the batteries in the same batch.
  • the battery solder joint detection system includes an imaging unit and an image processing unit, wherein the mirror surface arranged obliquely in the imaging device of the imaging unit can extend into the position of the corresponding solder joint in the battery, and directly obtain the image at this position.
  • Mirror image of solder joint Then, the mirror image is captured and output by the camera device of the imaging unit, and the mirror image is analyzed and compared by the image processing unit, so that the welding quality of the battery solder joint can be visually recognized. Therefore, during the inspection process, the stacking and pre-fixing structure completed before or during the welding process of the battery will not be changed or destroyed, thus solving the cumbersome inspection procedures of the existing battery solder joints and easy to cause battery damage. difficult question.
  • the detection method provided by the embodiments of the present application can directly complete the solder joint detection procedure after the battery has completed the soldering procedure, thereby realizing the automatic production procedure.
  • FIG. 1 is a block diagram of a battery solder joint detection system according to a first embodiment of the present application.
  • FIG. 2 is a side view of the imaging unit according to the first embodiment of the application.
  • FIG. 3 is a schematic diagram of the operation of the battery solder joint detection system according to the first embodiment of the present application.
  • FIG. 4 is a flowchart of a detection method of the battery solder joint detection system according to the first embodiment of the present application.
  • FIG. 5 is a top view of an imaging unit according to a second embodiment of the present application.
  • FIG. 6 is a side view of the imaging unit according to the second embodiment of the application.
  • FIG. 7 is a top view of an imaging unit according to a third embodiment of the present application.
  • FIG. 8 is a top view of a battery solder joint inspection system according to a fourth embodiment of the present application.
  • FIG. 9 is a top view of a battery solder joint inspection system according to a fifth embodiment of the present application.
  • FIG. 10 is a top view of a battery solder joint inspection system according to a sixth embodiment of the present application.
  • FIG. 11 is a side view of a battery solder joint inspection system according to a sixth embodiment of the present application.
  • FIG. 12 is a top view of an imaging unit according to a seventh embodiment of the present application.
  • FIG. 13 is a block diagram of a battery solder joint detection system according to an eighth embodiment of the present application.
  • the battery to be tested includes a body provided with a battery cell and a protective plate provided with electronic devices such as ceramic capacitors and field effect transistors, wherein a gap is separated between the protective plate and the body, and the battery core is provided with a gap.
  • the battery tabs are welded to the welding pads on the side of the protection plate opposite to the body, so as to form welding spots on the welding pads.
  • the battery solder joint detection system provided by the present application is used to detect the solder joint after the battery has completed the soldering procedure, and to judge whether the soldering quality meets the requirements.
  • the battery solder joint inspection system 1 disclosed in the first embodiment of the present application includes an imaging unit 10 and an image processing unit 20 .
  • the imaging unit 10 includes an imaging device 110 and a camera device 120.
  • the imaging device 110 includes a base 111 and a bracket 112, wherein the bracket 112 has opposite fixed ends 1121 and free ends 1122, the fixed end 1121 is connected to the base 111, and the free end 1122 is along the base.
  • the mirror surface 113 can be, but is not limited to, a reflective mirror, and the inclination angle of the mirror surface 113 is between 10 and 80 degrees, for example, at an angle of 30 to 60 degrees or 45 to 50 degrees.
  • the mirror surface 113 faces the side of the fixed end 1121 .
  • the inclination angle of the mirror surface 113 is 45 degrees as an example for illustration, but not limited thereto.
  • the camera device 120 is electrically connected to the image processing unit 20 .
  • the camera device 120 may be, but is not limited to, a camera, a video camera, a microscope (eg, an electron microscope), or a miniature camera module.
  • the camera device 120 is arranged in the form of a miniature camera module on the side of the free end 1122 of the imaging device 110 away from the mirror surface 113 , so that the camera device 120 and the mirror surface 113 of the imaging device 110 are separated by a predetermined distance D, and corresponds to the mirror surface 113 .
  • it is arranged coaxially with the mirror surface 113 , and the micro camera 121 of the camera device 120 is aligned with the mirror surface 113 to capture the mirror image from the mirror surface 113 and output it to the image processing unit 20 .
  • the image processing unit 20 is configured to receive the mirror image output by the camera 120, compare it with the standard image stored by itself, and output the comparison result.
  • the image processing unit 20 may be a computer with a central processing unit (Central Processing Unit, CPU) and/or a graphics processing unit (Graphics Processing Unit, GPU), or a central processing unit (Central Processing Unit, CPU) or The form of a graphics processor is arranged in the camera 120 .
  • a graphics processor is arranged in the camera 120 .
  • the image processing unit 20 and the camera 120 may be two components that operate independently, or may be integrated on the same device as a part of the image processing device.
  • the detection method of the battery solder joint detection system 1 disclosed in this embodiment includes:
  • Step S101 providing a battery.
  • the battery C is transported to the inspection station by the conveying device 30, for example, the battery C is moved from the working platform to the inspection station by the robotic arm around the worktable, or the battery C is transported from the last welding station to the inspection station through the conveyor belt Corresponding to the position of the battery solder joint detection system 1 .
  • step S103 the mirror surface of the imaging device is inserted into the gap between the protective plate of the battery and the main body, and a mirrored image of the solder joints on the protective plate is presented on the mirror surface.
  • the battery C can be selectively driven toward the imaging device 110 by the conveying device 30, or the imaging device 110 can be driven toward the battery C, so that the free end 1122 with the mirror surface 113 on the imaging device 110 extends into the battery C
  • the gap d between the protective plate C2 and the body C1 corresponds to the position of the solder joint W on the protective plate C2, that is, the mirror surface 113 and the solder joint W are overlapped in the projection direction, so that the welding structure and shape of the solder joint W are
  • the OR state may display a mirrored image on the mirror surface 113 .
  • Step S105 capturing and outputting the mirror image by the camera device.
  • the camera 121 of the camera device 120 is correspondingly adjusted to focus on the focal length of the mirror surface 113 , and after the focusing is completed, the camera 121 from the mirror surface 113 is adjusted accordingly. to capture mirrored images.
  • the focal length of the camera 121 may be self-focused by the camera 120 , or the focal length may be adjusted by driving the camera 121 of the camera 120 by the graphics processing unit 20 .
  • the imaging device 110 or the camera device 120 is additionally provided with a light-emitting component for illuminating or projecting to the surrounding area of the mirror surface 113, so that the mirrored image can be more clearly presented on the mirror surface 113, so as to facilitate
  • the camera 121 captures the mirror image by taking a picture.
  • the camera device 120 outputs the captured mirror image to the image processing unit 20 for subsequent image processing, identification, and comparison procedures.
  • Step S107 the mirrored image is received by the image processing unit and compared with the standard image in the memory.
  • the image processing unit 20 After receiving the mirror image, the image processing unit 20 performs a comparison procedure between the mirror image and the standard image based on the standard image pre-stored in its internal memory.
  • procedures such as image retention and preprocessing can also be selectively performed on the mirrored images according to the needs of different situations. For example, rotate the mirrored image before saving the file, or adjust the color brightness, contrast or white balance of the mirrored image, so that the image parameter values of the mirrored image are consistent with the standard image, and then the image is saved and saved.
  • the comparison procedure is performed, and the comparison result is generated, for example, the welding quality of the solder joint W meets the requirements, there is a defect, or the capture angle of the image needs to be adjusted for secondary inspection, etc.
  • Step S109 output the comparison result through the image processing unit.
  • the image processing unit 20 may output the comparison result to the display, present the result screen through the display, or output the comparison result to the speaker, and present the comparison result through sound broadcasting or different audio sounds.
  • the battery solder joint detection system disclosed in the second embodiment of the present application is substantially the same as the first embodiment, and the difference between the two is that in the second embodiment of the present application, the imaging unit 10 It also includes a stroke adjustment mechanism 40 for driving the imaging device 110 and/or the camera device 120 in the imaging unit to move back and forth toward the battery to be detected, and to approach or move away from the battery.
  • the stroke adjustment mechanism 40 can be a slide rail or a linear motor with a programming motor, and the imaging device 110 and/or the camera device 120 are arranged on the stroke adjustment mechanism 40 at a position corresponding to the programming motor, wherein the programming motor is electrically connected to the image processing and drive the corresponding device in the imaging unit 10 to displace on the stroke adjustment mechanism 40 through the drive of the image processing unit, for example, to drive one of the imaging device 110 and the camera device 120 to displace, or to drive both of them to adjust the stroke at the same time.
  • the mechanism 40 is displaced upward.
  • the imaging device 110 of the imaging unit 10 is set on the stroke adjustment mechanism 40 as an example for illustration. Therefore, when the battery solder joint detection system provided in this embodiment is applied to the battery solder joint detection program, in the step of extending the mirror surface 113 of the imaging device 110 into the gap between the battery protection plate and the main body, the method further includes: The image processing unit drives the imaging device 110 to move closer to or apart from the battery on the stroke adjustment mechanism 40, so that the mirror surface 113 extends into the gap or moves out from the gap; and when the mirror surface 113 extends into the gap, adjust the camera 121 of the camera device 120 to focus on Steps such as the focal length of the mirror surface 113 . Then, the steps of capturing and outputting the mirror image through the camera device 120 are completed. Therefore, the mirror image of the solder joint can be obtained when the battery is fixed, which is quite convenient in operation.
  • the stroke adjustment mechanism configured in the second embodiment of the present application can also be applied to the transportation of batteries.
  • the stroke adjustment mechanism can transport the battery to move toward the imaging device.
  • a limit structure can also be set on the stroke adjustment mechanism, so that the imaging device is moved to a predetermined detection position and then temporarily stops at this position, so that the mirror surface of the imaging device and the protective plate of the battery are stopped at this position. Solder joints can be precisely aligned to initiate subsequent inspection procedures.
  • the battery solder joint detection system provided by the third embodiment of the present application is configured with two coaxially arranged stroke adjustment mechanisms 40 , one of which is used for the imaging device 110 set, and the other is for the camera 120 to set.
  • This configuration is generally applied in a scenario where the camera 121 of the camera device 120 is configured as a fixed-focus lens, but it is not limited thereto. Therefore, when the battery solder joint detection system is applied to the detection of battery solder joints, before the step of capturing and outputting the mirror image through the camera device 120, the detection method further includes: using the image processing unit on the stroke adjustment mechanism 40 The step of driving the camera device 120 to move back and forth relative to the mirror surface 113 to adjust the focal length.
  • the image processing unit drives the imaging device 120 relative to the mirror surface 113 of the imaging device 110 according to the distance between the imaging device 110 and the camera device 120 .
  • the focal length of the camera 121 can fall on the mirror surface 113 , so as to focus on the mirror image displayed on the mirror surface 113 for subsequent procedures of capturing and outputting the mirror image.
  • the battery solder joint detection system disclosed in the fourth embodiment of the present application is substantially the same as the third embodiment, and the difference between the two is that the battery solder joint detection system disclosed in the fourth embodiment of the present application also further It includes a conveying unit 50, which is arranged on one side of the stroke adjusting mechanism 40, and is used for conveying the battery C to a predetermined position P, that is, the position to be detected.
  • the conveying unit 50 can be, but is not limited to, a conveying belt, and the conveying direction of the conveying belt and the direction in which the stroke adjusting mechanism 40 drives the displacement of the imaging unit 10 intersect at the predetermined position P, so that the battery C is imaged at the predetermined position P.
  • the detection method of this embodiment further includes the step of transporting the battery C to the predetermined position P corresponding to the mirror surface 113 through the conveying unit 50 .
  • the battery C correspond to the mirror surface 113 of the imaging device 110 at the predetermined position P where the stroke adjustment mechanism 40 and the conveying unit 50 intersect, and then drive the imaging device 110 to move closer to the battery C through the image processing unit, so that the mirror surface 113 can extend into the battery C
  • the camera device 120 can capture and output the mirror image on the focused mirror surface 113 .
  • the solder joints on the protective plate of the battery are sometimes distributed on two opposite sides of the protective plate.
  • the battery solder joint detection procedure can be achieved through the following implementations.
  • a carrier 60 is provided on the conveying unit 50 of the fourth embodiment of the present application for holding the battery C.
  • the stage 60 is movably disposed on the conveying unit 50 and can rotate left and right on the horizontal plane of the conveying unit 50 . Therefore, in the step of detecting the solder joints of the battery, the battery C can be placed on the carrier 60, and the battery C can be transported by the transfer unit 50 to a predetermined position P where the transfer unit 50 and the stroke adjustment mechanism 40 intersect, so as to complete the supply of the battery C. Steps for battery C.
  • the battery C can be driven to rotate relative to the imaging device 110 by the carrier 60 , so that the side with the solder joints on the protective plate of the battery C is rotated to the direction facing the mirror surface 113 of the imaging device 110 . Then, follow-up processing procedures such as imaging, capturing, outputting and comparing the mirror images of the solder joints are performed.
  • follow-up processing procedures such as imaging, capturing, outputting and comparing the mirror images of the solder joints are performed.
  • the rotation of the carrier 60 drives the protective plate of battery C to rotate, so that the undetected side of the protective plate faces the imaging device 110 of the mirror surface 113, and then perform the corresponding detection procedures.
  • the battery welding of the protective plate with welding points on both opposite sides can be completed. point detection program.
  • the battery solder joint detection system disclosed in the sixth embodiment of the present application includes two imaging units 10 , which are respectively disposed on two opposite sides of the conveying unit 50 and intersect at the predetermined position P . Therefore, in the operation of the detection program, the stroke adjustment mechanism 40 can be driven by the image processing unit to drive the mirror surfaces 113 of the two imaging units 10 to move toward the battery C, so that the mirror surfaces 113 of the two imaging units 10 are respectively on the protective plate C2.
  • each solder joint W can be obtained through the mirror surface 113 of the imaging device 110 , and the mirror image can be captured and output through the camera 121 of the camera device 120 .
  • a plurality of struts 1123 are formed on the bracket 112 of the imaging device 110, and a camera group 122 and a carrier 123 are arranged on the camera device 120, and the camera group 122 is horizontally displaced on the carrier 123 to make the camera
  • the cameras 121 of the group 122 may correspond to the mirror surfaces 113 on the respective struts 1123 in sequence, so as to capture the mirror images presented by the respective solder joints on the corresponding mirror surfaces 113 .
  • a plurality of struts 1123 are disposed on the free end 1122 of the bracket 112 , which may be integrally formed extending from the free end 1122 , or sleeved on the free end 1122 .
  • mirror surfaces 113 are arranged on each support rod 1123 .
  • the camera group 122 of the camera device 120 is arranged on the carrier 123, and the carrier 123 is provided with an active space S for the camera group 122 to be installed and displaced left and right in the horizontal direction, so that the camera group 122 can be driven by a motor.
  • 123 is moved back and forth in the horizontal direction, so that the camera head 121 of the camera group 122 can be selectively displaced to the support rod 1123 corresponding to the support rod 1123 in the same axial direction, and on the mirror surface 113 of the support rod 1123 Focus and capture the mirror image it presents.
  • FIG. 13 it is a block diagram of the battery solder joint detection system disclosed in the eighth embodiment of the present application.
  • the battery solder joint inspection system 1 disclosed in the eighth embodiment of the present application in addition to the imaging device 110 and the camera device 120 of the imaging unit 10 , and In addition to the image processing unit 20, it also includes an identification unit 70 electrically connected to the image processing unit 20, such as a barcode scanner, to identify the information label fiber configured on the battery, such as a barcode with a model number, batch number or a quick response Matrix code (Quick Response Code, QR Code), and transmit the identified information to the image processing unit 20.
  • an identification unit 70 electrically connected to the image processing unit 20, such as a barcode scanner, to identify the information label fiber configured on the battery, such as a barcode with a model number, batch number or a quick response Matrix code (Quick Response Code, QR Code), and transmit the identified information to the image processing unit 20.
  • the image processing unit 20 is further configured to receive the information tag, and establish the association information between the information tag and the comparison result.
  • the identification unit 70 can identify and output the information tag configured on the battery, such as the battery batch number, process parameters, etc.; and receive the information tag through the image processing unit 20, and The correlation information between the information standard fiber and the comparison result is established, and the correlation information includes the qualification rate of the same batch of batteries. Therefore, after the battery testing of the same batch is completed, if the pass rate is significantly lower than that of other batches, it indicates that the previous welding process may have defects, and it is possible to trace back to the welding site in real time to find out the causes and causes of defects. solution.
  • the specific embodiments of the battery solder joint detection system and its imaging device and detection method provided by the present application have been described above.
  • the stacking and fixing structure of the battery completed during the welding process is not damaged.
  • the welding quality inspection procedure can be carried out directly, so that the laser welding and its quality inspection process can realize a purely automated production process. Therefore, the battery structure after welding can be prevented from being damaged or deformed (including the deformation of the battery cell assembly structure, the deformation of the battery protection plate, etc.).
  • the laser welding inspection process for battery cells can achieve relatively simple operations, and obtain low-error and high-consistency inspection results.

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Abstract

本申请实施例提供一种电池焊点检测系统及其取像单元与检测方法。在本申请实施例中，电池焊点检测系统包括取像单元和图像处理单元。通过取像单元的成像装置上所设置的镜面和摄像装置的协同作用，撷取并输出电池焊点的镜射图像，以及通过图像处理单元对镜射图像的识别，可以在电池完成焊接程序后直接检测焊接质量。除了可以简化检测程序，避免电池在检测过程中受到损伤外，同时还能实现自动化检测程序。

Description

电池焊点检测系统及其取像单元与检测方法 技术领域
本申请涉及电池检测技术领域，尤其涉及一种电池焊点检测系统与检测方法。
背景技术
电池组焊接工艺技术随着近年来电池(例如锂电池)的大规模应用而快速的发展，由最开始的手工烙铁头焊接、超声波焊接，逐渐发展为以电阻点焊和激光焊接为主。
在手机软包电池上，由于其单电芯结构的配置方式，在生产制造流程中较多的使用激光焊接。其程序主要在焊接前进行电芯和电池保护板的堆叠和预固定，然后进行激光焊接。完成后的检查程序，主要依靠半自动生产设备和人工外观检查实现，其中必须把焊接好的电池组先取消堆叠和预固定；然后通过显微镜进行检查，并于检查完成后再进行二次堆叠和固定。然而，在实际操作过程中往往会破坏电芯和激光焊接的预固定结构。同时，再进行重新固定的时候，对于电池保护板的平整性无法管控，当出现一定形变以后可能对电池保护板上的敏感器件造成损伤(如陶瓷电容、场效应管等)，导致电池组报废。此外，在取消预固定和二次固定的作业程序上消耗工时较多，且动作复杂，导致自动化检查难以实现。
发明内容
本申请的多个方面提供一种电池焊点检测系统，可有效简化现有检查程 序中的堆叠和(预)固定等复杂程序，除了能确保电池上的敏感器件在检测过程中不会受到损伤外，还能大幅缩短检测工时，并实现自动化检测程序。
本申请实施例提供一种电池焊点检测系统，包括：取像单元，包括成像装置以及摄像装置，所述成像装置具有至少一倾斜设置的镜面，用以伸入所述电池的保护板与本体之间的间隙，显示所述保护板上焊点的镜射图像，所述摄像装置对应于所述镜面，用以撷取并输出所述镜射图像；以及图像处理单元，电性连接于所述摄像装置，用以接收所述镜射图像，并且与内存的标准图像进行比对，以及输出比对结果。
优选地，所述成像装置还包括底座与支架，所述支架具有相对的固定端和自由端，所述固定端连接于所述底座，所述自由端沿所述底座的径向延伸，所述镜面倾斜设置于所述自由端上。
优选地，所述摄像装置设置于所述自由端上远离所述镜面的一侧。
优选地，所述自由端设置有沿水平方向间隔排列的多个支杆，各个所述支杆上设置有个所述镜面，且所述摄像装置包括摄像机组和载具，所述摄像机组可于所述载具上沿所述水平方向往复位移，选择性的对应于其中一所述支杆的所述镜面。
优选地，所述取像单元还包括至少一行程调节机构，电性连接于所述图像处理单元，用以带动所述电池或所述成像装置位移，使所述电池和所述成像装置相互靠拢或分离，其中当所述电池和所述成像装置相互靠拢，所述镜面伸入所述间隙，并且对应于所述焊点。
优选地，所述成像装置与所述摄像装置设置于所述行程调节机构上，并且相隔一预定距离，所述图像处理单元还用以根据所述预定距离调整所述摄像装置的摄像头聚焦于所述镜面的焦距。
优选地，所述取像单元包括同轴设置的二个所述行程调节机构，其中之一供所述成像装置设置，另一供所述摄像装置设置，所述图像处理单元还用以根据所述成像装置和所述摄像装置之间的距离，驱动设置有所述摄像装置的行程调节机构相对所述成像装置位移，用以调整所述摄像装置的摄像头聚 焦于所述镜面的焦距。
优选地，所述电池焊点检测系统还包括传送单元，用以输送所述电池至对应于所述镜面的预定位置，其中所述行程调节机构设置于所述传送单元的一侧，并且相交于所述预定位置。
优选地，所述传送单元上设置有用以供所述电池承放的载台，所述载台活动设置于所述传送单元上，并且可于所述传送单元上旋转，带动所述保护板带有所述焊点的一侧对应于所述成像装置。
优选地，所述电池焊点检测系统包括二个所述取像单元，分别设置在所述传送单元的相对二侧，并且相交于所述预定位置，且所述保护板的相对二侧皆具有所述焊点，二个所述取像单元的所述镜面分别于所述保护板的相对二侧伸入所述间隙，并且对应于所述保护板相对二侧的所述焊点。
优选地，所述电池焊点检测系统还包括识别单元，电性连接于所述图理处理单元，用以辨识所述电池上配置的信息标纤，并且传送至所述图像处理单元，所述图像处理单元还用以接收所述信息标纤，并建立所述信息标纤与所述比对结果的关联信息。
本申请实施例还提供一种电池焊点检测系统的取像单元，包括：成像装置，具有至少一倾斜设置的镜面，用以伸入所述电池的保护板与本体之间的间隙，显示所述保护板上焊点的镜射图像；以及摄像装置，对应于所述镜面，用以撷取并输出所述镜射图像。
本申请实施例同时提供一种电池焊点的检测方法，包括：提供一电池；将成像装置的镜面伸入所述电池的保护板与本体之间的间隙，并且在所述镜面上呈现所述保护板上焊点的镜射图像；通过摄像装置撷取和输出所述镜射图像；通过图像处理单元接收所述镜射图像，并且与内存的标准图像进行比对；以及通过所述图像处理单元输出比对结果。
优选地，所述检测方法还包括：通过所述图像处理单元在行程调节机构上驱动所述成像装置朝向所述电池靠拢或分离，使所述镜面伸入所述间隙或自所述间隙内移出；以及当所述镜面伸入所述间隙时，调整所述摄像装置的 摄像头聚焦于所述镜面的焦距。
优选地，所述检测方法还包括：通过所述图像处理单元在所述行程调节机构上驱动所述摄像装置相对所述镜面前后位移，以调整所述焦距。
优选地，所述检测方法还包括：通过所述图像处理单元在所述行程调节机构上驱动所述摄像装置相对所述镜面水平位移，以调整所述摄像头在同一轴向上对应于所述镜面。
优选地，在驱动所述成像装置朝向所述电池靠拢之前，还包括：通过传送单元输送所述电池至与所述镜面相对应的预定位置，其中所述行程调节机构与所述传送单元相交于所述预定位置。
优选地，所述检测方法还包括：通过识别单元辨识并输出所述电池上配置的信息标纤；以及通过所述图像处理单元接收所述信息标纤，并建立所述信息标纤与所述比对结果的关联信息，所述关联信息包括同一批次的所述电池的合格率。
在本申请实施例中，电池焊点检测系统包括取像单元以及图像处理单元，其中取像单元的成像装置中倾斜设置的镜面可伸入电池中对应焊点的位置，并且在此位置直接取得焊点的镜射图像。再通过取像单元的摄像装置撷取和输出此镜射图像，以及通过图像处理单元对镜射图像进行分析比对，可以直观的识别电池焊点的焊接质量。因此，在检测过程中，不会更动和破坏电池在进行焊接前或焊接过程中即完成的堆叠和预固定结构，从而解决现有的电池焊点检查程序繁锁以及容易造成电池损伤等检查困难的问题。此外，本申请实施例所提供的检测方法，可以直接在电池完成焊接程序后，接续完成焊点检测程序，实现自动化生产程序。
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此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的 不当限定。在附图中：
图1为本申请第一实施例的电池焊点检测系统的方块图。
图2为本申请第一实施例的取像单元的侧视图。
图3为本申请第一实施例的电池焊点检测系统的操作示意图。
图4为本申请第一实施例的电池焊点检测系统的检测方法流程图。
图5为本申请第二实施例的取像单元的俯视图。
图6为本申请第二实施例的取像单元的侧视图。
图7为本申请第三实施例的取像单元的俯视图。
图8为本申请第四实施例的电池焊点检测系统的俯视图。
图9为本申请第五实施例的电池焊点检测系统的俯视图。
图10为本申请第六实施例的电池焊点检测系统的俯视图。
图11为本申请第六实施例的电池焊点检测系统的侧视图。
图12为本申请第七实施例的取像单元的俯视图。
图13为本申请第八实施例的电池焊点检测系统的方块图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
还需要说明的是，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、商品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、商品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、商品或者 设备中还存在另外的相同要素。
在本申请所揭示的实施例中，待检测的电池包括设置有电芯的本体以及设置有陶瓷电容、场效应管等电子器件的保护板，其中保护板和本体之间相隔一间隙，电芯通过电池极耳焊接于保护板相对本体一侧的焊垫上，从而在焊垫上形成焊点。本申请所提供的电池焊点检测系统即用以在电池完成焊接程序后，对此焊点进行检测，判断焊接质量是否符合要求。
请参阅图1至图3，本申请第一实施例所揭示的电池焊点检测系统1包括取像单元10以及图像处理单元20。取像单元10包括成像装置110和摄像装置120，成像装置110包括底座111和支架112，其中支架112具有相对的固定端1121和自由端1122，固定端1121连接于底座111，自由端1122沿底座111的径向方向延伸，形成悬置于底座111上方的杆体，其中杆体相对底座111的另一侧面上倾斜设置有镜面113，用以在自由端1122伸入电池C的本体C1和保护板C2之间的间隙d时，在镜面113上显示焊点W的镜射图像，其中焊点W的位置即位于图3中焊垫C21面向本体C1的一侧。因此，镜面113可以是但并不局限于反光镜，且镜面113的倾斜角度介于10～80度之间，例如以30～60度或45～50度的角度朝向固定端1121倾斜设置，使镜面113面向固定端1121的一侧。在本实施例中，是以镜面113的倾斜角度为45度作为举例说明，并不以此为限。
摄像装置120电性连接于图像处理单元20。摄像装置120可以是但不局限于相机、摄影机、显微镜(例如电子显微镜)或微型摄像头模块。在本实施例中，摄像装置120是以微型摄像头模块的形式设置在成像装置110的自由端1122上远离镜面113的一侧，使摄像装置120与成像装置110的镜面113之间相隔一预定距离D，并且对应于镜面113。例如与镜面113同轴设置，让其摄像装置120的微型摄像头121对准于镜面113，用以从镜面113上撷取镜射图像，并且输出至图像处理单元20。
图像处理单元20用以接收摄像装置120输出的镜射图像，并且与其本身所存储的标准图像进行比对，并输出比对结果。其中，图像处理单元20可以 是带有中央处理器(Central Processing Unit,CPU)和/或图形处理器(Graphics Processing Unit,GPU)的计算机，或者是以中央处理器(Central Processing Unit,CPU)或图形处理器的形式配置在摄像装置120内。例如在一些电子显微镜中，其本身即同时带有摄像、图像显示以及图像处理等多种功能。因此，在本申请的实施例中，图像处理单元20和摄像装置120可以是独立运作的两个组件，或者作为图像处理设备的一部分，一并整合在同一设备上。
请参阅图1至图4，在操作上，本实施例所揭示的电池焊点检测系统1的检测方法包括：
步骤S101，提供一电池。通过传送设备30将电池C输送至检测站点，例如通过工作台周边的机械手臂将电池C从移至检测站点的工作平台上，或者通过输送带将电池C从上一个焊接站点输送至检测站点上对应于电池焊点检测系统1的位置处。
步骤S103，将成像装置的镜面伸入电池的保护板与本体之间的间隙，并且在镜面上呈现保护板上焊点的镜射图像。在此步骤中，可以选择性的通过传送设备30带动电池C朝向成像装置110靠近，或者是带动成像装置110朝向电池C靠近，让成像装置110上带有镜面113的自由端1122伸入电池C的保护板C2和本体C1之间的间隙d，并且对应于保护板C2上的焊点W位置，也就是让镜面113和焊点W在投影方向上重叠，使焊点W的焊接结构、形态或状态可以在镜面113上显示出镜射图像。
步骤S105，通过摄像装置撷取和输出镜射图像。在镜面113上显示出镜射图像后，根据摄像装置120与成像装置110之间的预定距离D，对应调整摄像装置120的摄像头121聚焦于镜面113的焦距，并且在调焦完成后，从镜面113上撷取镜射图像。在此步骤中，摄像头121的焦距可以是通过摄像装置120自行对焦，或者是通过图形处理单元20驱动摄像装置120的摄像头121进行焦距的调整。此外，为了适应外界环境的光线变化，成像装置110或摄像装置120上另配置有发光组件，用以照射或投射至镜面113周边区域，让镜射图像更加清晰的呈现在镜面113上，以便于摄像头121通过拍照的方 式撷取镜射图像。接着，摄像装置120将所撷取到的镜射图像输出至图像处理单元20，以进行后续的图像处理、识别与比对等程序。
步骤S107，通过图像处理单元接收镜射图像，并且与内存的标准图像进行比对。图像处理单元20接收镜射图像后，以其内部存储器中预先存储的标准图像为基准，进行镜射图像和标准图像的比对程序。其中，在比对程序开始前，也可以视不同情况的需求，选择性的对镜射图像进行图像留文件以及预处理等程序。例如在留文件前将镜射图像进行旋转，或是对镜射图像的色彩明亮度、对比度或白平衡等进行调整，让镜射图像的图像参数值和标准图像一致时，再进行图像留文件和比对程序，并产生比对结果，例如焊点W的焊接质量符合要求、存在瑕疵或是需要调整图像的撷取角度进行二次检测等。
步骤S109，通过图像处理单元输出比对结果。在此步骤中，图像处理单元20可以是将比对结果输出至显示器上，通过显示器呈现结果画面，或者是输出至扬声器，通过声音播报或发出不同音频的声响来呈现比对结果。
在上述检测方法中，由于电池在通过焊接程序后，可直接从焊接站点传送到检测站点进行检测，完成自动化检测程序，不须要再通过人工进行现有的堆叠和预固定等处理程序，因此可以有效避免电池在检测过程中遭受意外损伤的情形发生，并且可大幅增进检测效率。
如图5和图6所示，本申请第二实施例所揭示的电池焊点检测系统和第一实施例大致相同，两者的差异在于，在本申请第二实施例中，取像单元10还包括行程调节机构40，用以带动取像单元中的成像装置110和/或摄像装置120朝向待检测电池往复位移，而相对电池靠近或远离。行程调节机构40可以是带有编程马达的滑轨或直线电机，成像装置110和/或摄像装置120即设置在行程调节机构40上对应编程马达的位置处，其中编程马达电性连接于图像处理单元，并通过图像处理单元驱动而带动取像单元10中相对应的装置在行程调节机构40上位移，例如带动成像装置110和摄像装置120其中之一位移，或者是同时带动两者于行程调节机构40上位移。
在本申请的第二实施例中，是以取像单元10的成像装置110设置在行程 调节机构40上作为举例说明。因此，当本实施所提供的电池焊点检测系统应用于电池焊点的检测程序时，在将成像装置110的镜面113伸入电池的保护板与本体之间的间隙的步骤中，还包括：通过图像处理单元在行程调节机构40上驱动成像装置110朝向电池靠拢或分离，使镜面113伸入间隙或自间隙内移出；以及当镜面113伸入间隙时，调整摄像装置120的摄像头121聚焦于镜面113的焦距等步骤。然后再接续完成通过摄像装置120撷取和输出镜射图像的步骤。因此，在电池固定不动的情形下就可以取得焊点的镜射图像，在操作上相当方便。
可以理解的是，本申请第二实施例所配置的行程调节机构也可以应用于电池的输送，在取像单元不动的情形下，通过行程调节机构运送电池朝向成像装置移动，同样可以达到让成像装置的镜面伸入电池的间隙内的目的。因此在具体实施上，并不以成像装置相对电池移动的方式为限。
此外，在本实施例中，行程调节机构上还可以设置限位结构，让成像装置位移至预定的检测位置后即暂时停靠在此位置上，让成像装置的镜面和电池的保謢板上的焊点可以精准对位，以便启动后续的检测程序。
如图7所示，相较于本申请第二实施例，本申请第三实施例所提供的电池焊点检测系统配置有同轴设置的二个行程调节机构40，其中之一供成像装置110设置，另一供摄像装置120设置。这种配置方式，通常应用在摄像装置120的摄像头121配置为定焦镜头的场景下，但并不以此为限。因此，当此电池焊点检测系统应用在电池焊点的检测时，其检测方法在通过摄像装置120撷取和输出镜射图像的步骤之前还包括：，通过图像处理单元在行程调节机构40上驱动摄像装置120相对镜面113前后位移的步骤，以调整焦距。也就是在成像装置110的镜面113上呈现出保护板上焊点的镜射图像后，图像处理单元根据成像装置110与摄像装置120之间的距离，驱动摄像装置120相对成像装置110的镜面113前后位移，让摄像头121的焦距可以落在镜面113上，从而聚焦于镜面113上所显示的镜射图像，以进行后续的撷取和输出镜射图像的程序。
如图8所示，本申请第四实施例所揭示的电池焊点检测系统与第三实施例大致相同，两者间的差异在于，本申请第四实施例所揭示的电池焊点检测系统还包括传送单元50，设置在行程调节机构40的一侧，用以输送电池C至预定位置P，即待检测位置。其中，传送单元50可以是但并不局限于输送带，且输送带的输送方向和行程调节机构40带动取像单元10位移的方向相交于预定位置P，使电池C在预定位置P上和成像装置110的镜面113相对应。因此，本实施例的检测方法，在驱动成像装置110朝向电池C靠拢之前，还包括：通过传送单元50输送电池C至与镜面113相对应的预定位置P的步骤。让电池C在行程调节机构40与传送单元50相交的预定位置P上对应于成像装置110的镜面113，然后再通过图像处理单元驱动成像装置110朝向电池C靠拢，让镜面113可以伸入电池C的间隙内，以便在镜面113上呈现焊点的镜射图像，从而让摄像装置120可以在聚焦于镜面113上撷取和输出镜射图像。
值得说明的是，在本申请的一些实施例中，位于电池的保护板上的焊点有时会分布在保护板的相对二侧。在此场景下，可以通过以下几种实施方式来达成电池焊点的检测程序。
如图9所示，本申请第五实施例所揭示的电池焊点检测系统，是在上述本申请第四实施例的传送单元50上设置载台60，用以供电池C承放。载台60活动设置在传送单元50上，并且可以在传送单元50的水平面上左右旋转。因此，在电池焊点的检测步骤中，可以将电池C承放在载台60上，并通过传送单元50将电池C输送到传送单元50与行程调节机构40相交的预定位置P，来完成提供电池C的步骤。并且，在后续步骤中，可以通过载台60带动电池C相对成像装置110转动，让电池C的保护板上具有焊点的一侧转动至面向成像装置110的镜面113的方向。然后，再执行焊点的镜射图像的成像、撷取、输出以及比对等后续处理程序。或者，也可以是在位于电池C的保护板其中一侧的焊点完成检测程序后，再通过载台60的旋转，带动电池C的保护板转动，让保护板尚未检测的一侧面向成像装置110的镜面113，然后再进行 相应检测程序。
此外，也可以是在上述本申请第四实施例的基础上，通过在传送单元的相对二侧分别置行程调节机构以及取像单元，来完成相对二侧皆具有焊点的保护板的电池焊点检测程序。如图10和图11所示，本申请第六实施例所揭示的电池焊点检测系统包括二个取像单元10，分别设置在传送单元50的相对二侧，并且相交于所述预定位置P。因此在检测程序的操作上，可以通过图像处理单元分别驱动行程调节机构40带动二个取像单元10的镜面113朝向电池C位移，使二个取像单元10的镜面113分别在保护板C2的相对二侧伸入间隙d内，并且位移至对应于焊点W的位置处。如此一来，即可通过成像装置110的镜面113取得各个焊点W的镜射图像，以及通过摄像装置120的摄摄头121撷取和输出镜射图像。
可以理解的是，在本申请的某些应用场景中，通常也会遭遇到位于电池的保护板同一侧具有多个焊点的情形。此时，除了通过电池相对取像单元进行水平位移，让多个焊点依序对应于成像装置的镜面以完成焊点质量的检测外，可以采用如图12所示的本申请所揭示的第七实施例的实施方式，在成像装置110的支架112上形成多个支杆1123以及在摄像装置120上配置摄像机组122和载具123，通过摄像机组122在载具123上水平位移，让摄像机组122的摄像头121可以依序对应于各个支杆1123上的镜面113，以撷取各个焊点在相对应的镜面113上所呈现的镜射图像。在本实施例中，多个支杆1123设置在支架112的自由端1122上，其可以是一体成型的从自由端1122延伸形成，或者是套接在自由端1122上。并且在各个支杆1123上皆设置有镜面113。摄像装置120的摄像机组122设置在载具123上，并且在载具123上设置有供摄像机组122安装以及在水平方向左右位移的活动空间S,让摄像机组122可以通过电机带动，在载具123上沿水平方向往复位移，从而让摄像机组122的摄像头121可以选择性的位移至各个支杆1123中与其在同一轴向上相对应的支杆1123，并且在此支杆1123的镜面113上聚焦以及撷取其所呈现的镜射图像。
如图13所示，为本申请第八实施例所揭示的电池焊点检测系统的方块图。为了增进电池生产制造的整体效能，并且能尽早发现制程中的缺陷，在本申请第八实施例所揭示的电池焊点检测系统1中，除了取像单元10的成像装置110和摄像装置120以及图像处理单元20之外，还包括了电性连接于图像处理单元20的识别单元70，例如条码扫描器，用以识别电池上配置的信息标纤，例如带有型号、批号的条形码或快速响应矩阵图码(Quick Response Code,QR Code)，并且将识别后的信息标纤传送至图像处理单元20。因此在本实施例中，图像处理单元20还用以接收信息标纤，并建立所述信息标纤与所述比对结果的关联信息。在具体实施上，可以是在是供电池的步骤后，通过识别单元70辨识并输出电池上配置的信息标纤，例如电池批号、制程参数等；以及通过图像处理单元20接收信息标纤，并建立信息标纤与比对结果的关联信息，此关联信息包括同一批次的电池的合格率。因此，在同一批次的电池检测完成后，若其合格率相较于其他批次明显偏低，即显示出先前的焊接工艺可能存在缺陷，可实时的回溯至焊接站点找出缺陷的成因和解决方案。
以上说明了本申请所提供的电池焊点检测系统及其取像装置与检测方法的具体实施方式，在电池的生产制造过程中，让电池在焊接程序时即完成的堆叠和固定结构不受破坏的情况下，就能够直接的进行焊接质量的检测程序，从而让激光焊接及其质量检查工艺能够实现纯自动化完成的生产流程。因此，可以避免焊接完成后的电池结构遭受损伤或形变(包括电芯组装结构形变，电池保护板形变等)。同时，针对电池电芯的激光焊接检查工艺，能够实现较为简单的操作，并获得低误差和高一致性的检测结果。
以上所述仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。

Claims (22)

  1. 一种电池焊点检测系统，其特征在于，包括：
    取像单元，包括成像装置以及摄像装置，所述成像装置具有至少一倾斜设置的镜面，用以伸入所述电池的保护板与本体之间的间隙，显示所述保护板上焊点的镜射图像，所述摄像装置对应于所述镜面，用以撷取并输出所述镜射图像；以及
    图像处理单元，电性连接于所述摄像装置，用以接收所述镜射图像，并且与内存的标准图像进行比对，以及输出比对结果。
  2. 如权利要求1所述的电池焊点检测系统，其特征在于，所述成像装置还包括底座与支架，所述支架具有相对的固定端和自由端，所述固定端连接于所述底座，所述自由端沿所述底座的径向延伸，所述镜面倾斜设置于所述自由端上。
  3. 如权利要求2所述的电池焊点检测系统，其特征在于，所述摄像装置设置于所述底座上相邻于所述固定端的一侧。
  4. 如权利要求2所述的电池焊点检测系统，其特征在于，所述自由端设置有沿水平方向间隔排列的多个支杆，各个所述支杆上设置有个所述镜面，且所述摄像装置包括摄像机组和载具，所述摄像机组可于所述载具上沿所述水平方向往复位移，选择性的对应于其中一所述支杆的所述镜面。
  5. 如权利要求1所述的电池焊点检测系统，其特征在于，所述取像单元还包括至少一行程调节机构，电性连接于所述图像处理单元，用以带动所述电池或所述成像装置位移，使所述电池和所述成像装置相互靠拢或分离，其中当所述电池和所述成像装置相互靠拢，所述镜面伸入所述间隙，并且对应于所述焊点。
  6. 如权利要求5所述的电池焊点检测系统，其特征在于，所述成像装置与所述摄像装置设置于所述行程调节机构上，并且相隔一预定距离，所述图像处理单元还用以根据所述预定距离调整所述摄像装置的摄像头聚焦于所 述镜面的焦距。
  7. 如权利要求5所述的电池焊点检测系统，其特征在于，包括同轴设置的二个所述行程调节机构，其中之一供所述成像装置设置，另一供所述摄像装置设置，所述图像处理单元还用以根据所述成像装置和所述摄像装置之间的距离，驱动设置有所述摄像装置的行程调节机构相对所述成像装置位移，用以调整所述摄像装置的摄像头聚焦于所述镜面的焦距。
  8. 如权利要求5述的电池焊点检测系统，其特征在于，还包括传送单元，用以输送所述电池至对应于所述镜面的预定位置，其中所述行程调节机构设置于所述传送单元的一侧，并且相交于所述预定位置。
  9. 如权利要求8述的电池焊点检测系统，其特征在于，所述传送单元上设置有用以供所述电池承放的载台，所述载台活动设置于所述传送单元上，并且可于所述传送单元上旋转，带动所述保护板带有所述焊点的一侧对应于所述成像装置。
  10. 如权利要求8所述的电池焊点检测系统，其特征在于，包括二个所述取像单元，分别设置在所述传送单元的相对二侧，并且相交于所述预定位置，且所述保护板的相对二侧设置有所述焊点，二个所取像单元的所述镜面分别于所述保护板的相对二侧伸入所述间隙，并且对应于所述保护板相对二侧的所述焊点。
  11. 如权利要求1所述的电池焊点检测系统，其特征在于，还包括识别单元，电性连接于所述图理处理单元，用以辨识所述电池上配置的信息标纤，并且传送至所述图像处理单元，所述图像处理单元还用以接收所述信息标纤，并建立所述信息标纤与所述比对结果的关联信息。
  12. 一种电池焊点检测系统的取像单元，其特征在于，包括：
    成像装置，具有至少一倾斜设置的镜面，用以伸入所述电池的保护板与本体之间的间隙，显示所述保护板上焊点的镜射图像；以及
    摄像装置，对应于所述镜面，用以撷取并输出所述镜射图像。
  13. 如权利要求12所述的取像单元，其特征在于，所述成像装置还包 括底座与支架，所述支架具有相对的固定端和自由端，所述固定端连接于所述底座，所述自由端沿所述底座的径向延伸，所述镜面倾斜设置于所述自由端上。
  14. 如权利要求12所述的取像单元，其特征在于，所述取像单元还包括至少一行程调节机构，用以带动所述电池或所述成像装置位移，使所述电池和所述成像装置相互靠拢或分离，其中当所述电池和所述成像装置相互靠拢，所述镜面伸入所述间隙，并且对应于所述焊点。
  15. 如权利要求14所述的取像单元，其特征在于，所述成像装置与所述摄像装置设置于所述行程调节机构上，并且相隔一预定距离，所述摄像装置的摄像头聚焦于所述镜面。
  16. 如权利要求14所述的取像单元，其特征在于，包括同轴设置的二个所述行程调节机构，其中之一供所述成像装置设置，另一供所述摄像装置设置，所述摄像装置通过相对应的所述行程调节机构相对所述成像装置位移，调整所述摄像装置的摄像头聚焦于所述镜面的焦距。
  17. 一种电池焊点的检测方法，其特征在于，包括：
    提供一电池；
    将成像装置的镜面伸入所述电池的保护板与本体之间的间隙，并且在所述镜面上呈现所述保护板上焊点的镜射图像；
    通过摄像装置撷取和输出所述镜射图像；
    通过图像处理单元接收所述镜射图像，并且与内存的标准图像进行比对；以及
    通过所述图像处理单元输出比对结果。
  18. 如权利要求17所述的检测方法，其特征在于，还包括：
    通过所述图像处理单元在行程调节机构上驱动所述成像装置朝向所述电池靠拢或分离，使所述镜面伸入所述间隙或自所述间隙移出；以及当所述镜面伸入所述间随时，调整所述摄像装置的摄像头聚焦于所述镜面的焦距。
  19. 如权利要求18所述的检测方法，其特征在于，还包括：
    通过所述图像处理单元在所述行程调节机构上驱动所述摄像装置相对所述镜面前后位移，以调整所述焦距。
  20. 如权利要求18所述的检测方法，其特征在于，还包括：
    通过所述图像处理单元在所述行程调节机构上驱动所述摄像装置相对所述镜面水平位移，以调整所述摄像头在同一轴向上对应于所述镜面。
  21. 如权利要求18所述的检测方法，其特征在于，在驱动所述成像装置朝向所述电池靠拢之前，还包括：
    通过传送单元输送所述电池至与所述镜面相对应的预定位置，其中所述行程调节机构与所述传送单元相交于所述预定位置。
  22. 如权利要求17所述的检测方法，其特征在于，还包括：
    通过识别单元辨识并输出所述电池上配置的信息标纤；以及
    通过所述图像处理单元接收所述信息标纤，并建立所述信息标纤与所述比对结果的关联信息，所述关联信息包括同一批次的所述电池的合格率。
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117554378A (zh) * 2024-01-02 2024-02-13 宁德时代新能源科技股份有限公司 一种焊接检测系统和缺陷检测方法
CN117686432A (zh) * 2024-01-31 2024-03-12 宁德时代新能源科技股份有限公司 电池焊接检测系统和方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6771805B1 (en) * 1999-10-06 2004-08-03 Keiso Research Laboratories, Inc. Perspective viewing inspection system
CN201251555Y (zh) * 2008-08-28 2009-06-03 赵永先 芯片焊接质量检测仪
CN106405991A (zh) * 2016-11-29 2017-02-15 深圳市世尊科技有限公司 潜望式摄像模组及用于该潜望式摄像模组的反射镜装置
CN206074465U (zh) * 2016-08-31 2017-04-05 福建兵工装备有限公司 一种基于机器视觉的电池与连接片焊点检测装置
CN110044909A (zh) * 2019-05-05 2019-07-23 桂林电子科技大学 一种基于图像处理的电机转子焊点缺陷检测装置及方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6771805B1 (en) * 1999-10-06 2004-08-03 Keiso Research Laboratories, Inc. Perspective viewing inspection system
CN201251555Y (zh) * 2008-08-28 2009-06-03 赵永先 芯片焊接质量检测仪
CN206074465U (zh) * 2016-08-31 2017-04-05 福建兵工装备有限公司 一种基于机器视觉的电池与连接片焊点检测装置
CN106405991A (zh) * 2016-11-29 2017-02-15 深圳市世尊科技有限公司 潜望式摄像模组及用于该潜望式摄像模组的反射镜装置
CN110044909A (zh) * 2019-05-05 2019-07-23 桂林电子科技大学 一种基于图像处理的电机转子焊点缺陷检测装置及方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WANG SHIWEN: "Automated Optical Inspection of Tabs Welding Defects in Lithium Batteries", MASTER THESIS, 15 January 2019 (2019-01-15), CN , pages 1 - 64, XP055841854, ISSN: 1674-0246 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117554378A (zh) * 2024-01-02 2024-02-13 宁德时代新能源科技股份有限公司 一种焊接检测系统和缺陷检测方法
CN117686432A (zh) * 2024-01-31 2024-03-12 宁德时代新能源科技股份有限公司 电池焊接检测系统和方法
CN117686432B (zh) * 2024-01-31 2024-06-07 宁德时代新能源科技股份有限公司 电池焊接检测系统和方法

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