CN117969541A

CN117969541A - Detection device and detection method, battery processing equipment and battery production line

Info

Publication number: CN117969541A
Application number: CN202410370513.5A
Authority: CN
Inventors: 张添鑫; 黄登登; 杨木凯; 黄勤锟; 史云茹
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-05-03

Abstract

The application relates to a detection device and a detection method, battery processing equipment and a battery production line, wherein the detection device comprises: a base with a material inlet level and a material outlet level; the first moving piece is movably arranged between the feeding position and the discharging position; and a detection assembly configured to detect an appearance of at least one surface of the battery cell in a process in which the first moving member moves the battery cell; the detection assembly comprises a control piece and a second visual detection module, wherein the control piece is used for controlling the first moving piece to start and stop, and the second visual detection module is used for detecting the explosion-proof valve and the side face of the pole of the battery cell when the first moving piece stops. According to the application, the detection assembly can sequentially perform appearance detection on each surface of the battery monomer in the moving process of the battery monomer, so that the residence time in the detecting process of the battery monomer is reduced, the effect of completing detection in the moving process is realized, and the appearance detection efficiency of the battery monomer can be effectively improved.

Description

Detection device and detection method, battery processing equipment and battery production line

Technical Field

The application relates to the technical field of batteries, in particular to a detection device and method, battery processing equipment and a battery production line.

Background

In recent years, new energy products are greatly introduced into the market, and the demand and the quality requirements of the batteries used as new energy power in the market are also higher and higher. The battery is required to be coated, rolled, welded and the like in the manufacturing process, and a series of surface defects such as pits, scratches, bulges, dirt and the like are easily formed on the surface of the battery in the operation process.

Therefore, in the production process of the battery, appearance detection needs to be performed on the surface of each battery cell, so that the appearance quality of the battery cell meets the production requirement. However, the detection efficiency and the accuracy of the detection result in the existing appearance detection process of the battery monomer are low, and the production efficiency of the battery is affected.

Disclosure of Invention

Based on the above, it is necessary to provide a detection device and a detection method, a battery processing device, and a battery production line, aiming at the problem that the detection efficiency and the accuracy of the detection result are low in the existing appearance detection process of the battery cell.

In a first aspect, the present application provides a detection apparatus for detecting an appearance of a battery monomer transported along a transport direction, and includes a base, a first moving member, and a detection assembly, where the base has a feed level and a discharge level that are disposed at intervals along the transport direction; the first moving piece is movably arranged between the feeding position and the discharging position and is used for driving the battery monomer to move from the feeding position to the discharging position; the detection assembly is arranged on the base and located between the feeding position and the discharging position, and the detection assembly is configured to be capable of detecting the appearance of at least one surface of the battery monomer in the process that the first moving piece drives the battery monomer to move. The detection assembly comprises a control piece and a second visual detection module located between the feeding position and the discharging position, the control piece is respectively in communication connection with the first moving piece and the second visual detection module, the control piece is used for controlling the first moving piece to start and stop, and the second visual detection module is used for detecting the explosion-proof valve of the battery and the side face of the pole when the first moving piece stops.

Through the structure, the first movable part can drive the battery monomer to move to the discharge position from the feeding displacement, meanwhile, the detection assembly can sequentially detect the appearance of each surface of the battery monomer in the movement process of the battery monomer, the residence time in the detection process of the battery monomer is reduced, the detection effect in the movement process is achieved, and therefore the appearance detection efficiency of the battery monomer can be effectively improved.

Through the structure, the detection of the explosion-proof valve and the side face of the pole can be realized simultaneously, and the detection time is shortened, so that the detection efficiency can be effectively improved.

In some embodiments, the detection assembly includes a first visual detection module located between the in-feed position and the out-feed position, the first visual detection module being configured to detect a large area of the battery cell during movement of the battery cell by the first mover.

Through setting up first vision detection module, can detect the roughness on the free large face of battery to detect in real time at the free in-process of moving to the discharge position by the feeding displacement, improve the free detection efficiency of battery.

In some embodiments, the detection assembly further comprises a first image acquisition member located between the feeding position and the discharging position, and the first image acquisition member is used for detecting the top surface of the battery cell in the process that the first moving member drives the battery cell to move.

Through setting up first image acquisition spare, can carry out outward appearance detection to the free top surface of battery to at the free in-process of moving to the discharge position by the feeding displacement to the top surface at uniform velocity scanning, thereby accomplish the testing process of top surface, improve the free detection efficiency of battery.

In some embodiments, the detection assembly further includes a first acquisition module located between the feeding position and the discharging position, and the first acquisition module is used for acquiring a time-sharing stroboscopic image of a large surface of the battery cell in a process that the first moving member drives the battery cell to move.

Therefore, various appearance defects on the large surface of the battery monomer can be detected more comprehensively through the first acquisition module, and the detection quality of the battery monomer is improved. In addition, the first acquisition module can acquire the time-sharing stroboscopic image of the large surface in real time in the moving process of the battery monomer, so that the appearance detection of the large surface is finished, and the detection efficiency of the battery monomer can be improved.

In some embodiments, the detection assembly further comprises a second image acquisition member located between the feeding position and the discharging position, and the second image acquisition member is used for detecting the top surface of the pole of the battery cell in the process that the first moving member drives the battery cell to move.

Through setting up the second image acquisition spare, can carry out outward appearance detection to battery monomer's utmost point post top to at battery monomer by the feeding displacement move to the in-process of ejection of compact position to the uniform velocity scanning of utmost point post top surface, thereby accomplish the testing process of utmost point post top surface, improve battery monomer's detection efficiency.

In some embodiments, the detection device further includes a second moving member and a second collecting module, where the second moving member is movably disposed upstream of the feeding position along the conveying direction, so as to drive the battery unit to move to the feeding position;

The second acquisition module is arranged on the base and positioned on the moving path of the second moving piece, and the second acquisition module is configured to acquire a time-sharing stroboscopic image of the bottom surface of the battery monomer in the process that the second moving piece drives the battery monomer to move.

Therefore, the second moving part is arranged, so that the battery monomer can be driven to move, and the battery monomer is smoothly placed on the feeding position. In addition, the second acquisition module can scan the bottom surface of the battery monomer in the process that the second moving part drives the battery monomer to move, so that the detection of the bottom surface is realized, and the detection efficiency is improved.

In some embodiments, the detection device further comprises a feeding conveying member and an adjusting member, wherein the feeding conveying member is movably arranged at the upstream of the second moving member along the conveying direction and is used for conveying a plurality of battery cells;

the adjusting piece is arranged on at least one side of the feeding conveying piece and is used for adjusting the distance between every two adjacent battery monomers.

Therefore, by arranging the inclination detection mechanism, the placement position of the battery monomer on the feeding position can be ensured to be more accurate, and the process of moving the battery monomer from the feeding position to the discharging position is enabled to be more stable.

In some embodiments, the detection device further includes a third moving member and a third collecting module, where the third moving member is movably disposed downstream of the discharge level along the conveying direction, so as to drive the battery unit to move out of the discharge level;

The third acquisition module is arranged on the base and positioned on the moving path of the third moving piece, and the third acquisition module is configured to acquire time-sharing stroboscopic images of the side faces of the battery monomers in the process that the third moving piece drives the battery monomers to move.

Through setting up the feeding transport piece, can connect between last process and the detection device better to realize the smooth transfer of battery monomer. In addition, through setting up the regulating part, can nimble adjust the interval between two adjacent battery monomer to the second removes the piece and snatchs or the centre gripping to every battery monomer, thereby drives the battery monomer and remove.

In some embodiments, the detection device further includes a discharge conveying member and a NG conveying member disposed downstream of the third moving member in the conveying direction, the discharge conveying member being configured to receive and convey the battery cells that are qualified for detection, and the NG conveying member being configured to receive and convey the battery cells that are unqualified for detection.

Through setting up the third moving member, can drive the battery monomer and remove to shift out the material level smoothly with the battery monomer. In addition, the third acquisition module can scan the side surface of the battery monomer in the process that the third moving part drives the battery monomer to move, so that the detection of the side surface is realized, and the detection efficiency is improved.

In a second aspect, the application also provides a battery processing device, which comprises the detection device, wherein the detection device is used for detecting the appearance of each surface of the battery cell.

In a third aspect, the application also provides a battery production line comprising a battery processing device as above.

In a fourth aspect, the present application also provides a detection method for detecting the appearance of a battery cell transported in a transport direction, the detection method comprising the steps of:

Controlling the battery monomer to move from a feeding position to a discharging position along the conveying direction;

image acquisition is carried out on the large surface of the battery monomer;

Image acquisition is carried out on the top surface of the battery monomer;

Acquiring a large-area time-sharing stroboscopic image of a battery monomer, and detecting the large-area time-sharing stroboscopic image;

image acquisition is carried out on the top surface of the pole of the battery monomer;

And controlling the battery monomer to stop moving, and detecting the appearance of the explosion-proof valve and the side face of the pole of the battery monomer.

In some embodiments, before the step of controlling the movement of the battery cells from the feed position to the discharge position, the method further comprises the step of:

And controlling the battery monomer to move to a feeding position, acquiring a time-sharing stroboscopic image of the bottom surface of the battery monomer in the moving process, and detecting the time-sharing stroboscopic image of the bottom surface.

In some embodiments, before the step of controlling the battery cell to move to the feeding position and acquiring the time-sharing strobe image of the bottom surface of the battery cell during the movement, the method further comprises the steps of:

The distance between every two adjacent battery cells in the conveying direction is adjusted.

In some embodiments, after the step of controlling the battery cell to stop moving and performing appearance detection on the explosion-proof valve and the side face of the pole of the battery cell, the method further comprises the steps of:

And controlling the battery monomer to move out of the discharge position, acquiring a time-sharing stroboscopic image of the side surface of the battery monomer in the moving process, and detecting the time-sharing stroboscopic image of the side surface.

In some embodiments, after the step of controlling the battery cell to move out of the discharge level and acquiring the time-sharing strobe image of the side of the battery cell during the movement, the step of detecting the time-sharing strobe image of the side further comprises the steps of:

and analyzing to obtain appearance detection results of all surfaces of the battery monomers, and screening and respectively conveying qualified battery monomers and unqualified battery monomers.

Above-mentioned detection device and detection method, battery processing equipment, battery production line, first moving member can drive the battery monomer and move to go out the material level by the feeding displacement, simultaneously, and detection component can carry out outward appearance detection to each free surface of battery in proper order in the free removal process of battery, reduces the free dwell time of in-process of battery, realizes accomplishing the effect of detection in the removal process to can effectively improve the free outward appearance detection efficiency of battery.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a detection device according to one or more embodiments.

Fig. 2 is a schematic structural view of a first visual inspection module in an inspection apparatus according to one or more embodiments.

Fig. 3 is a schematic structural view of a first image capturing element in a detection apparatus according to one or more embodiments.

Fig. 4 is a schematic structural view of a second image capturing element in a detection device according to one or more embodiments.

Fig. 5 is a schematic structural diagram of a third acquisition module in a detection device according to one or more embodiments.

FIG. 6 is a flow diagram of a method of detection in accordance with one or more embodiments.

Reference numerals illustrate: 100. a detection device; 10. a base; 20. a first moving member; 30. a detection assembly; 40. a second moving member; 50. a second acquisition module; 60. a tilt detection mechanism; 70. a feed conveyor; 80. an adjusting member; 91. a third moving member; 92. a third acquisition module; 93. a discharge conveying member; 94. NG a delivery member; 11. a feed level; 12. discharging material level; 31. a first visual detection module; 32. a first image acquisition member; 33. a first acquisition module; 34. a second image acquisition member; 35. and a second visual detection module.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and other fields. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The battery is composed of one or more battery cells, and for each battery, the plurality of battery cells composing the battery are connected in series, in parallel or in series-parallel. The series-parallel connection refers to that a plurality of battery monomers are connected in series or in parallel.

The plurality of battery monomers can directly form a battery, or can form a battery module first, and then form the battery through one or more battery modules. However, before a battery or a battery module is formed by the battery cells, appearance detection needs to be performed on each outer surface of the battery cells, so that the appearance quality of the battery cells is ensured to be qualified.

And each battery cell has a plurality of surfaces, each surface having a different arrangement direction. In addition, appearance detection of the surface of the battery cell comprises a plurality of detection contents, such as defects including pits, scratches, bulges, dirt and the like, so that the detection difficulty is high.

Based on this, in order to more completely detect various defects on the surface of the battery cell, a manual visual inspection method is generally adopted at present so as to identify a plurality of different types of defects. However, the manual visual inspection method has low detection efficiency, and the accuracy of the detection result has a great relationship with the experience and standardization of operators, which often results in low accuracy of the detection result and influences the quality of the battery.

Based on the above consideration, in order to solve the problem that the detection efficiency and the accuracy of the detection result are low in the existing appearance detection process of the battery monomer, one or more embodiments of the present application provide a detection device, where the first moving member can drive the battery monomer to move from the feeding displacement to the discharging position, and meanwhile, the detection component can synchronously perform appearance detection on each surface of the battery monomer in the movement process of the battery monomer, so as to reduce the residence time in the detection process of the battery monomer, realize the effect of completing detection in the movement process, and thereby effectively improve the appearance detection efficiency of the battery monomer.

Referring to fig. 1, an embodiment of the present application provides a detecting device 100 for detecting the appearance of a battery cell transported along a transporting direction, and includes a base 10, a first moving member 20, and a detecting assembly 30. The base 10 has a feeding position 11 and a discharging position 12 disposed at intervals along a conveying direction, and the first moving member 20 is movably disposed between the feeding position 11 and the discharging position 12 and is used for driving the battery cells to move from the feeding position 11 to the discharging position 12. The detection assembly 30 is disposed on the base 10 and between the inlet position 11 and the outlet position 12, and the detection assembly 30 is configured to detect an appearance of at least one surface of the battery cell during the process that the first moving member 20 drives the battery cell to move.

It should be noted that, the detection device 100 is used for detecting the appearance of the battery cell, specifically, the detection device 100 can detect pits, scratches, protrusions, dirt and other surface defects on each surface of the battery cell, so that the surface structure of the battery cell meets the production requirement, and the quality of the battery assembled by the battery cell is improved.

The base 10 refers to a structure capable of providing a support and mounting base for the first movable member 20, the detecting assembly 30, and other structures in the detecting device 100, and the base 10 may be, but is not limited to, a support platform. The base 10 is provided with a feeding position 11 and a discharging position 12, wherein the feeding position 11 and the discharging position 12 can be used for receiving and bearing the battery cell so as to conveniently execute operations such as detection or movement on the battery cell.

The first moving part 20 is a structure capable of driving the battery monomer to move from the feeding position 11 to the discharging position 12, the first moving part 20 can comprise a shifting fork component, the shifting fork component can comprise a supporting part and a shifting part, the supporting part is provided with a plurality of detection positions corresponding to the detection component 30, the battery monomer is placed on the supporting part, and the shifting part can push the battery monomer to move from one detection position to the other detection position, so that the purpose of driving the battery monomer to move is achieved.

In addition, the first moving member 20 may further include a magnetic driving structure, specifically, the magnetic driving structure includes a magnetic suspension driving assembly and a manipulator, where the manipulator can grab a battery monomer and drive the grabbed battery monomer to move synchronously under the driving of the magnetic suspension driving assembly, so as to achieve the purpose that the battery monomer moves from one detection position to another detection position.

It can be appreciated that the first moving member 20 may be further configured as a moving mechanism such as a driving belt, so as to support and place the battery unit and drive the battery unit to move from the feeding position 11 to the discharging position 12, which is not described herein.

Further, a detection assembly 30 is arranged between the inlet level 11 and the outlet level 12. When the battery monomer is driven by the first moving member 20 to move from the feeding position 11 to the discharging position 12, the detecting component 30 can sequentially detect the appearance of a plurality of different surfaces of the battery monomer, so as to realize dynamic detection of the battery monomer, reduce the residence time of the battery monomer in the detecting device 100, and improve the detecting efficiency.

Through the structure, the first moving part 20 can drive the battery monomer to move from the feeding position 11 to the discharging position 12, meanwhile, the detection assembly 30 can sequentially carry out appearance detection on each surface of the battery monomer in the moving process of the battery monomer, the residence time in the detecting process of the battery monomer is reduced, the effect of completing detection in the moving process is realized, and therefore the appearance detection efficiency of the battery monomer can be effectively improved.

Referring to fig. 1 and 2 together, in some embodiments, the detecting assembly 30 includes a first visual detecting module 31 located between the feeding position 11 and the discharging position 12, and the first visual detecting module 31 is configured to detect a large area of the battery cell during the process of moving the battery cell by the first moving member 20.

Specifically, the first visual detection module 31 may be, but not limited to, a CCD camera or a 3D camera, where the first visual detection module 31 is disposed between the feeding position 11 and the discharging position 12, and when the battery monomer is driven by the first moving member 20 to move from the feeding position 11 to the discharging position 12, the first visual detection module 31 may detect the flatness of the large surface of the battery monomer to identify structural defects such as pits or protrusions on the large surface.

Further, the first visual inspection module 31 judges defects such as pits or protrusions on the large surface by inspecting the distance between itself and the large surface, thereby inspecting the flatness of the large surface. Therefore, the first visual detection module 31 can synchronously detect the battery monomer in the process that the first moving member 20 drives the battery monomer to move from the feeding position 11 to the discharging position 12, so as to realize dynamic detection.

By arranging the first visual detection module 31, the flatness of the large surface of the battery monomer can be detected, and the detection is performed in real time in the process that the battery monomer moves from the feeding position 11 to the discharging position 12, so that the detection efficiency of the battery monomer is improved.

Referring to fig. 1 and 3 together, in some embodiments, the detecting assembly 30 further includes a first image capturing element 32 located between the feeding position 11 and the discharging position 12, and the first image capturing element 32 is configured to detect a top surface of the battery cell during the process of moving the battery cell by the first moving element 20.

Specifically, the first image capturing element 32 may be, but not limited to, configured as a first 3D line scan camera, and is disposed above the first moving element 20, and when the battery monomer moves from the feeding position 11 to the discharging position 12, the battery monomer moves at a uniform speed and passes through the scanning range of the first 3D line scan camera, so that the top surface of the battery monomer is scanned and detected by the first 3D line scan camera.

Along with the in-process that battery monomer removed between feeding position 11 and ejection of compact position 12, battery monomer at the uniform velocity is through first 3D line scan camera, from this, first 3D line scan camera can at the uniform velocity scan battery monomer's top surface, obtains the complete scanning image of top surface to realize the outward appearance detection of top surface.

Through setting up first image acquisition spare 32, can carry out outward appearance detection to the free top surface of battery to at the free in-process of removing to ejection of compact position 12 by feeding position 11 to the top surface at uniform velocity scanning, thereby accomplish the detection process of top surface, improve the free detection efficiency of battery.

In some embodiments, the detection assembly 30 further includes a first acquisition module 33 located between the inlet 11 and the outlet 12, and the first acquisition module 33 is configured to acquire a time-sharing strobe image of a large surface of the battery cell during the process of moving the battery cell by the first moving member 20.

Specifically, the first acquisition module 33 may flash with multiple groups of light source components at different periods of time and take a photograph with a 2D camera, thereby obtaining a time-sharing strobe image of the large surface of the battery cell.

Wherein, because the area of the large face is larger, the probability of occurrence of defects on the large face is larger, and the influence of the large face on the overall structure of the battery cell is larger. Therefore, the first visual inspection module 31 first inspects the large surface to detect the flatness of the large surface, so as to identify the structural defects such as pits or protrusions on the large surface.

Further, the first acquisition module 33 is utilized to acquire a time-sharing stroboscopic image of the large surface in the process of moving the battery monomer, so as to detect defects such as impurities or dirt on the large surface.

Therefore, by arranging the first acquisition module 33, various appearance defects on the large surface of the battery cell can be detected more comprehensively, and the detection quality of the battery cell is improved. In addition, the first acquisition module 33 can acquire the time-sharing stroboscopic image of the large surface in real time in the moving process of the battery monomer, so that the appearance detection of the large surface is finished, and the detection efficiency of the battery monomer can be improved.

Referring to fig. 1 and 4 together, in some embodiments, the detecting assembly 30 further includes a second image capturing element 34 located between the feeding position 11 and the discharging position 12, and the second image capturing element 34 is configured to detect a top surface of a post of the battery cell during the process of moving the battery cell by the first moving element 20.

Specifically, the second image capturing element 34 may be, but not limited to, configured as a second 3D line scanning camera, and is disposed above the first moving element 20, and when the battery monomer moves from the feeding position 11 to the discharging position 12, the battery monomer moves at a uniform speed and passes through the scanning range of the second 3D line scanning camera, so that the top of the pole of the battery monomer is scanned and detected by the second 3D line scanning camera.

Along with the in-process that battery monomer moved between feeding position 11 and ejection of compact position 12, battery monomer at the uniform velocity was through the second 3D line and is swept the camera, from this, the second 3D line sweeps camera can at the uniform velocity scan battery monomer's utmost point post top surface, obtains the complete scanning image of utmost point post top surface to realize the outward appearance detection of utmost point post top surface.

Through setting up second image acquisition spare 34, can carry out outward appearance detection to the free post top of battery to at the battery monomer by feeding position 11 remove to the in-process of ejection of compact position 12 to the uniform velocity scanning of post top, thereby accomplish the detection process of post top, improve the free detection efficiency of battery.

In some embodiments, the detecting assembly 30 further includes a control member (not shown) and a second visual detecting module 35 located between the feeding position 11 and the discharging position 12, the control member is respectively in communication with the first moving member 20 and the second visual detecting module 35, the control member is used for controlling the first moving member 20 to start or stop, and the second visual detecting module 35 is used for detecting the explosion-proof valve and the post side of the battery cell when the first moving member 20 stops.

Specifically, the control member may be, but not limited to, an upper computer, the second visual detection module 35 may be, but not limited to, a CCD camera or a 3D camera, the second visual detection module 35 is disposed between the feeding level 11 and the discharging level 12, and the control member is respectively in communication with the first moving member 20 and the second visual detection module 35, and may control the first moving member 20 to start or stop or control the second visual detection module 35 to perform a detection operation.

When the battery cell moves to a position corresponding to the second visual detection module 35, the control member controls the first moving member 20 to stop, and the battery cell is in a stationary state. Then, the control member controls the second visual detection module 35 to move downward and cover the explosion-proof valve and the pole, so that the side surfaces of the explosion-proof valve and the pole are photographed and detected through the second visual detection module 35.

It should be noted that, in general, the explosion-proof valve is provided with a structure such as a dent, that is, the surface of the explosion-proof valve is often uneven. Furthermore, the pole has a plurality of sides, for example four sides, and each side is oriented differently. In this way, the detection of the explosion-proof valve and the pole is complicated.

By arranging the control member and the second visual detection module 35, the first moving member 20 can be controlled to stop so that the battery cell can be kept in a static state in a short time, and the second visual detection module 35 is covered on the explosion-proof valve and the pole so as to detect the side surfaces of the explosion-proof valve and the pole.

Although the battery cell needs to stop moving in this process, the stop time is short, and the second visual detection module 35 can complete the appearance detection of the explosion-proof valve and the side face of the pole in the stop time, so that the detection efficiency is high.

In some embodiments, the detecting device 100 further includes a second moving member 40 and a second collecting module 50, where the second moving member 40 is movably disposed upstream of the feeding position 11 along the conveying direction so as to drive the battery unit to move to the feeding position 11. The second acquisition module 50 is disposed on the base 10 and located on a moving path of the second moving member 40, and the second acquisition module 50 is configured to obtain a time-sharing strobe image of the bottom surface of the battery monomer in a process that the second moving member 40 drives the battery monomer to move.

Specifically, the second moving member 40 may be, but not limited to, a mechanical arm or a gripper structure, and the battery monomer is grabbed by the second moving member 40, then is driven to move to the feeding position 11 at a constant speed, and then is placed on the feeding position 11.

Further, the second collecting module 50 is disposed on a moving path of the second moving member 40, and in a process that the second moving member 40 drives the battery monomer to move to the feeding position 11 at a constant speed, the battery monomer passes over the second collecting module 50 at a constant speed. Therefore, the second acquisition module 50 can perform uniform speed scanning on the bottom surface of the battery cell, and a time-sharing stroboscopic image of the bottom surface is obtained, so that appearance detection of the bottom surface is realized.

Therefore, by providing the second moving member 40, the battery cell can be driven to move, so that the battery cell can be smoothly placed on the feeding position 11. In addition, the second acquisition module 50 can scan the bottom surface of the battery monomer in the process that the second moving member 40 drives the battery monomer to move, so as to realize detection of the bottom surface and improve the detection efficiency.

Further, the detecting device 100 may further comprise a tilt detecting mechanism 60, the tilt detecting mechanism 60 being provided on the feeding level 11. After the battery cell is placed on the feeding position 11, the placement position of the battery cell is detected by the inclination detection mechanism 60, so as to ensure that the placement of the battery cell on the feeding position 11 is more stable.

Specifically, a target placement position may be preset on the feeding position 11, and a reference line is formed according to the target placement position. When a battery cell is placed on the feeding position 11, the inclination detection mechanism 60 detects the actual position of the battery cell and compares it with the position of the reference line, so that the degree of inclination of the battery cell can be derived from the difference therebetween.

Therefore, by arranging the inclination detection mechanism 60, the placement position of the battery monomer on the feeding position 11 can be ensured to be more accurate, and the process of moving the battery monomer from the feeding position 11 to the discharging position 12 is ensured to be more stable.

In some embodiments, the detecting device 100 further includes a feeding conveying member 70 and an adjusting member 80, wherein the feeding conveying member 70 is movably disposed upstream of the second moving member 40 in the conveying direction, and is used for conveying a plurality of battery cells. An adjusting member 80 is provided at least one side of the feed conveyor 70 for adjusting the interval between every adjacent two battery cells.

Specifically, the feed conveyor 70 may be provided as, but is not limited to, a conveyor belt or a conveyor roller. The feeding and conveying member 70 is connected between the detecting device 100 and the previous process, that is, after the battery cell is manufactured in the previous process, the battery cell is conveyed into the detecting device 100 through the feeding and conveying member 70 so as to facilitate the appearance detection of the battery cell.

Since the battery cells completed in the previous process are arranged in pairs, the adjusting member 80 is required to be arranged, and the adjusting member 80 changes the interval between two adjacent battery cells, so that the interval between two adjacent battery cells is increased, and each battery cell is conveniently grasped or clamped by the second moving member 40.

By providing the feed conveyor 70, it is possible to better connect between the previous process and the inspection device 100 to achieve smooth transfer of the battery cells. In addition, by providing the adjusting member 80, the distance between two adjacent battery cells can be flexibly adjusted, so that the second moving member 40 can grasp or clamp each battery cell, thereby driving the battery cells to move.

Referring to fig. 1 and fig. 5 together, in some embodiments, the detecting device 100 further includes a third moving member 91 and a third collecting module 92, where the third moving member 91 is movably disposed downstream of the discharge level 12 along the conveying direction so as to drive the battery cells to move out of the discharge level 12. The third acquisition module 92 is disposed on the base 10 and located on a moving path of the third moving member 91, and the third acquisition module 92 is configured to obtain a time-sharing strobe image of a side surface of the battery cell in a process that the third moving member 91 drives the battery cell to move.

Specifically, the third moving member 91 may be, but not limited to, a mechanical arm or a gripper structure, and the battery monomer is grabbed from the discharging position 12 by the third moving member 91 and then is driven to move out of the discharging position 12 at a constant speed.

Further, the third collecting module 92 is disposed on a moving path of the third moving member 91, and in a process that the third moving member 91 drives the battery monomer to move at a constant speed, the battery monomer passes through a scanning range of the third collecting module 92 at a constant speed. Therefore, the third acquisition module 92 can perform uniform scanning on the side surface of the battery cell to obtain a time-sharing stroboscopic image of the side surface, so that appearance detection of the side surface is realized.

Therefore, by providing the third moving member 91, the battery cell can be driven to move, so that the battery cell can be smoothly moved out of the discharge position 12. In addition, the third acquisition module 92 can scan the side surface of the battery monomer in the process that the third moving part 91 drives the battery monomer to move, so that the detection of the side surface is realized, and the detection efficiency is improved.

In some embodiments, the detecting device 100 further includes a discharging conveying member 93 and a NG conveying member 94 disposed downstream of the third moving member 91 along the conveying direction, the discharging conveying member 93 is configured to receive and convey the battery cell that is qualified for detection, and the NG conveying member 94 is configured to receive and convey the battery cell that is unqualified for detection.

Specifically, the outfeed conveyor 93 and the NG conveyor 94 may each be provided as, but are not limited to, a conveyor belt or a conveyor roller. After the detection of all the surfaces of the battery cells is completed, the third moving member 91 may temporarily store the detected battery cells in the docking area, and then collect and analyze all the detection results, and determine that the battery cells are qualified and unqualified.

Further, the detection device 100 may determine the battery cell in the docking area according to the detection result, move the qualified battery cell to the discharging conveying member 93, and move the unqualified battery cell to the NG conveying member 94, so as to realize separate conveying of the products according to the detection result.

Through the structure, the qualified and unqualified battery monomers can be rapidly distinguished, and the qualified and unqualified battery monomers are respectively and independently conveyed, so that the production efficiency is improved.

In addition, the detecting device 100 may further include a lifting mechanism (not shown in the drawings) that is disposed to be liftable and connected between the discharging position 12 and the feeding position 11.

In order to make the movement of the battery monomer between the feeding position 11 and the discharging position 12 more stable, the battery monomer can be placed on a carrier, and the battery monomer is supported and driven to move between the feeding position 11 and the discharging position 12 by the carrier.

When the third moving member 91 grabs the battery cell from the discharging position 12 and drives the battery cell to move, the carrier on the discharging position 12 is empty. At this time, the empty carrier is driven to descend by the lifting mechanism, then the empty carrier is moved to the feeding position 11 and ascends at the feeding position 11, so that the subsequent support and placement of the battery cells can be realized.

Based on the same concept as the above-described detecting device 100, the present application also provides a battery processing apparatus including the detecting device 100 as described above, the detecting device 100 being configured to perform appearance detection on each surface of a battery cell.

Based on the same concept as the battery processing device, the application also provides a battery production line comprising the battery processing device.

As shown in fig. 6, based on the same concept as the above-described detecting device 100, the present application also provides a detecting method for performing appearance detection of a battery cell transported in a transport direction, the detecting method including the steps of:

s100: the battery monomer is controlled to move from a feeding position 11 to a discharging position 12 along the conveying direction.

Specifically, a plurality of battery monomers may be sequentially placed on the first moving member 20, where the first moving member 20 drives each battery monomer to move at a uniform speed, so that the battery monomer moves from the feeding position 11 to the discharging position 12.

S120: and in the moving process of the battery monomer, synchronously and sequentially carrying out appearance detection on at least one surface of the battery monomer.

In the process that the battery monomer moves from the feeding position 11 to the discharging position 12, the detection assembly 30 can sequentially perform appearance detection on each surface of the battery monomer. Therefore, the dynamic detection of the battery monomer is realized in the moving process, the residence time of the battery monomer is reduced, and the appearance detection efficiency is improved.

In some embodiments, in step S120, specifically including:

S121: and (5) carrying out image acquisition on the large surface of the battery cell.

Specifically, a 3D visual inspection is performed on the large face of the battery cell. When the battery monomer is driven by the first moving member 20 to move from the feeding position 11 to the discharging position 12, the first visual detection module 31 can detect the flatness of the large surface of the battery monomer, so as to identify structural defects such as pits or protrusions on the large surface.

S123: and (5) image acquisition is carried out on the top surface of the battery monomer.

Specifically, the top surface of the battery cell is 3D line scanned. When the battery monomer moves from the feeding position 11 to the discharging position 12, the battery monomer moves at a uniform speed and passes through the scanning range of the first image acquisition member 32, so that the top surface of the battery monomer is scanned and detected through the first image acquisition member 32.

Thus, the first image capturing element 32 can scan the top surface of the battery cell at a constant speed, and a complete scanned image of the top surface is obtained, thereby realizing appearance detection of the top surface.

S125: and acquiring a large-area time-sharing stroboscopic image of the battery monomer, and detecting the large-area time-sharing stroboscopic image.

Thus, the first acquisition module 33 is utilized to acquire a time-sharing strobe image of the large surface in the process of moving the battery cell, so that defects such as impurities or dirt on the large surface are detected.

S127: and (5) carrying out image acquisition on the top surface of the pole of the battery cell.

Specifically, the top of the pole of the battery cell is subjected to 3D line scanning. Along with the process that the battery monomer moves between the feeding position 11 and the discharging position 12, the battery monomer passes through the second image acquisition piece 34 at a constant speed, so that the second image acquisition piece 34 can scan the top surface of the battery monomer at a constant speed, a complete scanning image of the top surface of the pole is obtained, and appearance detection of the top surface of the pole is realized.

S129: and controlling the battery monomer to stop moving, and detecting the appearance of the explosion-proof valve and the side face of the pole of the battery monomer.

In some embodiments, before step S100, the method further comprises the step of:

S80: and controlling the battery monomer to move to the feeding position 11, acquiring a time-sharing stroboscopic image of the bottom surface of the battery monomer in the moving process, and detecting the time-sharing stroboscopic image of the bottom surface.

Specifically, the second collecting module 50 is disposed on a moving path of the second moving member 40, and in a process that the second moving member 40 drives the battery monomer to move to the feeding position 11 at a constant speed, the battery monomer passes over the second collecting module 50 at a constant speed. Therefore, the second acquisition module 50 can perform uniform speed scanning on the bottom surface of the battery cell, and a time-sharing stroboscopic image of the bottom surface is obtained, so that appearance detection of the bottom surface is realized.

In some embodiments, before step S80, the method further comprises the step of:

s60: the distance between every two adjacent battery cells in the conveying direction is adjusted.

Firstly, the battery cells are conveyed to the detection device 100 from the previous process through the feeding conveying member 70, and then the distance between two adjacent battery cells is adjusted through the adjusting member 80, so that the distance between two adjacent battery cells is increased, and the second moving member 40 is convenient for grabbing or clamping each battery cell, so that the battery cells are driven to move.

In some embodiments, after step S120, the method further comprises the steps of:

S140: and controlling the battery monomer to move out of the discharge level 12, acquiring a time-sharing stroboscopic image of the side surface of the battery monomer in the moving process, and detecting the time-sharing stroboscopic image of the side surface.

Specifically, the third moving member 91 may grasp the battery cell from the discharging position 12 and drive the battery cell to move. In the process that the third moving member 91 drives the battery monomer to move at a constant speed, the battery monomer passes through the scanning range of the third acquisition module 92 at a constant speed. Therefore, the third acquisition module 92 can perform uniform scanning on the side surface of the battery cell to obtain a time-sharing stroboscopic image of the side surface, so that appearance detection of the side surface is realized.

In some embodiments, after step S140, the method further comprises the steps of:

S160: and analyzing to obtain appearance detection results of all surfaces of the battery monomers, and screening and respectively conveying qualified battery monomers and unqualified battery monomers.

The detection results of the bottom surface, the large surface, the top surface of the pole, the explosion-proof valve, the side surface of the pole and the side surface of the pole are summarized, the appearance detection result of the battery is obtained through analysis, then the detected battery is screened, the qualified battery is moved to the discharging conveying member 93, the unqualified battery is moved to the NG conveying member 94, and therefore the appearance detection of the battery is completed.

The adjacent two surfaces of the battery cell are connected by an edge, and the side surface and the large surface are taken as an example for illustration, and the side surface and the large surface are connected by an edge. When scanning and detecting the large surface, half of the connection between the edge and the large surface is scanned. And when the side face is scanned and detected, the other half of the edge and the side face are connected in a scanning way. Thus, the scanning detection of the whole edge can be completed.

Similarly, three adjacent surfaces are connected by an R angle, and side surfaces, large surfaces and bottom surfaces are described as examples, and the side surfaces, large surfaces and bottom surfaces are connected by an R angle. And in the process of respectively detecting the side surface, the large surface and the bottom surface, scanning and detecting a part of the R angle connected with the side surface, the large surface and the bottom surface, thereby completing the whole scanning and detecting of the R angle.

According to one or more embodiments, after the battery cell is manufactured in the previous process, the battery cell is transferred from the previous process to the sensing device 100 by the feed conveyor 70. In this process, the battery cells are arranged in pairs. Therefore, the adjacent two battery cells are first subjected to the pitch change by the adjusting member 80, and the interval between the adjacent two battery cells is increased.

Then, the second moving member 40 is controlled to grasp the battery cell and drive the battery cell to move toward the feeding position 11 at a constant speed. In the process, the battery monomer passes through the upper part of the second acquisition module 50, and the bottom surface of the battery monomer is scanned at a constant speed through the second acquisition module 50, so that a time-sharing stroboscopic image of the bottom surface is obtained, and the appearance detection of the bottom surface is realized.

Further, the second moving member 40 places the battery cell on the feeding position 11, and the inclination detecting mechanism 60 detects the position of the battery cell on the feeding position 11 first, and when the battery cell is accurately placed on the target placement position, the first moving member 20 drives the battery cell to move from the feeding position 11 to the discharging position 12 at a constant speed.

In the moving process, the first visual detection module 31 detects the large surface of the battery, the first image acquisition piece 32 detects the top surface of the battery, the first acquisition module 33 acquires a time-sharing stroboscopic image of the large surface of the battery, the second image acquisition piece 34 detects the top surface of the pole of the battery, and the second visual detection module 35 detects the explosion-proof valve and the side surface of the pole of the battery.

After the above detection is completed, the battery cell is moved to the discharge position 12. The third moving part 91 is controlled to grasp the battery cell from the discharging position 12 and drive the battery cell to move at a constant speed. At this time, the third acquisition module 92 acquires a time-sharing strobe image of the side face of the battery cell.

Thus, appearance detection of each surface on the battery cell is completed, the detection result is analyzed and judged, qualified and unqualified battery cells are screened out, the qualified battery cells are moved to the discharging conveying member 93, and the unqualified battery cells are moved to the NG conveying member 94.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. A detecting device for detecting the appearance of a battery cell transported in a transport direction, comprising:

the base is provided with a feeding level and a discharging level which are arranged at intervals along the conveying direction;

The first moving piece is movably arranged between the feeding position and the discharging position and is used for driving the battery monomer to move from the feeding position to the discharging position; and

The detection component is arranged on the base and is positioned between the feeding position and the discharging position, and the detection component is configured to detect the appearance of at least one surface of the battery monomer in the process that the first moving piece drives the battery monomer to move;

The detection assembly comprises a control piece and a second visual detection module located between the feeding position and the discharging position, the control piece is respectively in communication connection with the first moving piece and the second visual detection module, the control piece is used for controlling the first moving piece to start and stop, and the second visual detection module is used for detecting the side face of the explosion-proof valve and the pole of the battery when the first moving piece stops.

2. The device of claim 1, wherein the detection assembly comprises a first visual detection module between the inlet location and the outlet location, the first visual detection module configured to detect a large area of the battery cell during movement of the battery cell by the first mover.

3. The device of claim 1, wherein the detection assembly further comprises a first image capturing element positioned between the feeding position and the discharging position, the first image capturing element being configured to detect a top surface of the battery cell during movement of the battery cell by the first moving element.

4. The detection device of claim 1, wherein the detection assembly further comprises a first acquisition module positioned between the feeding position and the discharging position, the first acquisition module being configured to acquire a time-sharing strobe image of a large surface of the battery cell during the process of moving the battery cell by the first moving member.

5. The detection device of claim 1, wherein the detection assembly further comprises a second image acquisition member positioned between the feeding position and the discharging position, the second image acquisition member being configured to detect a top surface of a post of the battery cell during the process of moving the battery cell by the first moving member.

6. The detection device according to claim 1, further comprising a second moving member and a second collecting module, wherein the second moving member is movably disposed upstream of the feeding position along the conveying direction so as to drive the battery cell to move to the feeding position;

The second acquisition module is arranged on the base and is positioned on the moving path of the second moving piece, and the second acquisition module is configured to acquire time-sharing stroboscopic images of the bottom surface of the battery monomer in the process that the second moving piece drives the battery monomer to move.

7. The detecting device according to claim 6, further comprising a feed conveying member and an adjusting member, the feed conveying member being movably disposed upstream of the second moving member in the conveying direction and configured to convey a plurality of the battery cells;

8. The detection device according to claim 1, further comprising a third moving member and a third collecting module, wherein the third moving member is movably disposed downstream of the discharge position along the conveying direction, so as to drive the battery unit to move out of the discharge position;

The third acquisition module is arranged on the base and is positioned on the moving path of the third moving piece, and the third acquisition module is configured to acquire time-sharing stroboscopic images of the side faces of the battery monomers in the process that the third moving piece drives the battery monomers to move.

9. The inspection apparatus of claim 8 further comprising a outfeed conveyor member and a NG conveyor member disposed downstream of said third moving member in said conveying direction, said outfeed conveyor member for receiving and conveying said battery cells that are inspected to be acceptable, said NG conveyor member for receiving and conveying said battery cells that are inspected to be unacceptable.

10. Battery processing apparatus comprising a detection device according to any one of claims 1 to 9 for appearance detection of the respective surfaces of the battery cells.

11. A battery production line comprising the battery processing apparatus according to claim 10.

12. A detection method for appearance detection of a battery cell transported in a transport direction, the detection method comprising the steps of:

image acquisition is carried out on the large surface of the battery monomer;

image acquisition is carried out on the top surface of the battery monomer;

Acquiring a large-area time-sharing stroboscopic image of the battery monomer, and detecting the large-area time-sharing stroboscopic image;

Image acquisition is carried out on the top surface of the pole of the battery cell;

13. The method of claim 12, further comprising the step of, prior to the step of controlling the movement of the battery cells from the feed level to the discharge level:

And controlling the battery monomer to move to the feeding position, acquiring a time-sharing stroboscopic image of the bottom surface of the battery monomer in the moving process, and detecting the time-sharing stroboscopic image of the bottom surface.

14. The method according to claim 13, further comprising, before the step of controlling the movement of the battery cell to the feeding position and acquiring the time-sharing strobe image of the bottom surface of the battery cell during the movement, the step of detecting the time-sharing strobe image of the bottom surface, the steps of:

and adjusting the distance between every two adjacent battery cells in the conveying direction.

15. The method of detecting according to claim 12, further comprising, after the step of controlling the movement of the battery cell to stop and performing appearance detection of the explosion-proof valve and the post side surface of the battery cell, the step of:

And controlling the battery monomer to move out of the discharging position, acquiring a time-sharing stroboscopic image of the side surface of the battery monomer in the moving process, and detecting the time-sharing stroboscopic image of the side surface.

16. The method according to claim 15, wherein after the step of controlling the battery cell to move out of the discharge position and acquiring the time-sharing strobe image of the side of the battery cell during the movement, detecting the time-sharing strobe image of the side, the method further comprises the steps of: