Pole piece appearance detection device and battery processing system

Abstract

The embodiment of the application discloses a kind of pole piece appearance detection devices and battery processing system, including conveying main body including drive assembly and vacuum plate, vacuum plate is equipped with detachable variable section, detachable variable section includes multiple splicing bodies, multiple splicing bodies are detachably assembled with to realize the width of detachable variable section adjustable;Negative pressure conveying belt is sleeved on the outside of conveying main body, and negative pressure conveying belt is driven with drive assembly and can rotate relative to conveying main body, and negative pressure conveying belt is communicated with vacuum plate gas circuit;And first cover plate group is detachably arranged in conveying main body and is arranged in the width direction of negative pressure conveying belt one side, and second cover plate group is detachably arranged in conveying main body and is arranged in the width direction of negative pressure conveying belt other side.It can be compatible with the detection needs of multiple sizes pole piece by flexibly assembling appropriate number of splicing bodies, the change type cost of pole piece appearance detection device is greatly reduced, and the implementation difficulty is low, the change type cycle is greatly shortened, and production efficiency is guaranteed.

Description

Technical Field

[0001] This invention relates to the technical field of battery processing, and in particular to an electrode appearance inspection device and a battery processing system. Background Technology

[0002] With the rapid development of the new energy vehicle industry in recent years, the market demand for power batteries is also constantly increasing, which in turn places higher demands on the performance of power batteries. The core component of a power battery is the electrode sheet. To ensure that the dimensions of the cut electrode sheets meet design requirements, a dimensional inspection device is typically used during electrode sheet processing to inspect their dimensions. The specific inspection process is roughly as follows: the cut electrode sheets are conveyed to the inspection station via a negative pressure belt conveyor. The width of the negative pressure belt is designed to be smaller than the width of the electrode sheet, allowing the two sides of the electrode sheet to extend from the sides of the belt. At this time, a backlight illuminates the back of the electrode sheet, and a CCD imager captures the edges of the electrode sheet, thus measuring its dimensions.

[0003] However, when producing cells of different sizes, the size of the electrode also changes. In order to ensure that the two sides of the electrode can be effectively exposed on both sides of the negative pressure belt, the main structure of the vacuum conveyor needs to be dismantled and replaced. The replacement cost is high, the implementation is difficult, the replacement cycle is long, and the production efficiency is affected. Summary of the Invention

[0004] In view of this, the present invention provides an electrode appearance inspection device and a battery processing system to solve the problems of high replacement cost, high implementation difficulty, long replacement cycle, and reduced production efficiency in the prior art.

[0005] To achieve one, some, or all of the above objectives, or other objectives, the present invention provides an electrode appearance inspection device, comprising:

[0006] The conveying body includes a drive assembly and a vacuum plate. The vacuum plate is provided with a detachable variable section, which includes multiple splicing bodies. The multiple splicing bodies can be detachably assembled and cooperated to realize the width of the detachable variable section is adjustable.

[0007] A negative pressure conveyor belt, which is sleeved on the outside of the conveying body and is driven by the drive assembly and can rotate relative to the conveying body, and is connected to the vacuum plate air passage; and

[0008] A first cover plate assembly and a second cover plate assembly, wherein the first cover plate assembly is detachably disposed on the conveying body and arranged on one side of the width direction of the negative pressure conveyor belt, and the second cover plate assembly is detachably disposed on the conveying body and arranged on the other side of the width direction of the negative pressure conveyor belt.

[0009] In one embodiment, each of the splicing bodies is provided with a connected vacuum chamber and a connecting hole. One of two adjacent splicing bodies is provided with a first connecting part and the other is provided with a second connecting part. The first connecting part and the second connecting part are detachably connected to allow the two adjacent splicing bodies to be assembled, and to connect the two adjacent connecting holes and to connect the two adjacent vacuum chambers.

[0010] In one embodiment, the conveying body further includes a sealing ring, which is sealed at the junction of two adjacent communicating holes.

[0011] In one embodiment, the detachable section is located in the middle section of the vacuum plate and is set in accordance with the testing station.

[0012] In one embodiment, both the first cover plate group and the second cover plate group include multiple split plates, which are arranged side by side along the rotation direction of the negative pressure conveyor belt.

[0013] In one embodiment, the electrode appearance inspection device further includes an inspection light source assembly, which is disposed on the conveying body and located in the inspection station, and is used to illuminate the back side of the electrode.

[0014] In one embodiment, the detection light source assembly includes a telescopic driver and a backlight. The telescopic driver is disposed on the conveying body, and the telescopic shaft of the telescopic driver is connected to the backlight to drive the backlight to telescopically move along the width direction of the negative pressure conveyor belt.

[0015] In one embodiment, the electrode appearance inspection device further includes an inspection camera assembly, which is mounted above the negative pressure conveyor belt and arranged corresponding to the inspection station. The inspection camera assembly is used to capture images of the electrodes located on the negative pressure conveyor belt to analyze and obtain the external dimensions of the electrodes.

[0016] In one embodiment, the detection camera assembly includes a mounting bracket, a first hanger, a second hanger, a first vision camera, and a second vision camera. The first hanger is movably mounted on the mounting bracket and connected to the first vision camera, and the second hanger is movably mounted on the mounting bracket and connected to the second vision camera. The first vision camera is located upstream of the second vision camera on the electrode transport path. And / or, the first vision camera and the second vision camera are staggered in a direction perpendicular to the electrode transport path.

[0017] The present invention also proposes a battery processing system, which includes the electrode appearance inspection device described above.

[0018] Implementing the embodiments of the present invention will have the following beneficial effects:

[0019] This electrode appearance inspection device is used in processing applications where the dimensions of cut electrodes are inspected to determine whether they meet design requirements. During operation, the cut electrodes are conveyed onto a negative pressure conveyor belt. A vacuum plate generates negative pressure suction on the conveyor belt, reliably adsorbing and fixing the electrodes to its surface. The drive assembly rotates the conveyor belt, allowing the electrodes to follow it into the inspection station for testing. When the manufacturing process of the battery cell changes, causing a change in the width of the cut electrodes to be inspected, a detachable section with dimensions adapted to the current electrode width can be obtained by properly disassembling or assembling an appropriate number of splicing components. Simultaneously, replacing the first and second cover plate assemblies with appropriately sized components ensures that both sides of the cut electrode extend beyond the width of the negative pressure conveyor belt, meeting inspection requirements. Furthermore, this solution does not require a complete replacement of the conveyor body, nor does it require redesigning and manufacturing the vacuum plate. By flexibly assembling an appropriate number of splicing units, it can accommodate the testing needs of various sizes of electrode sheets. The changeover cost of the electrode sheet appearance inspection device is greatly reduced, the implementation difficulty is low, the changeover cycle is significantly shortened, and production efficiency is guaranteed. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] in:

[0022] Figure 1 This is a schematic diagram of the structure of an electrode appearance inspection device according to one embodiment;

[0023] Figure 2 for Figure 1 The right-view structural diagram;

[0024] Figure 3 This is a partial exploded structural diagram of the main transport component;

[0025] Figure 4 This is a structural layout diagram of the light source assembly for testing.

[0026] Explanation of reference numerals in the attached figures:

[0027] 10. Conveying body; 20. Vacuum plate; 21. Detachable section; 211. Vacuum chamber; 30. Negative pressure conveyor belt; 40. First cover plate assembly; 50. Second cover plate assembly; 60. Detection light source assembly; 61. Telescopic driver; 62. Backlight; 70. Detection camera assembly; 71. Mounting bracket; 72. First hanger; 73. Second hanger; 74. First vision camera; 75. Second vision camera; 80. Drive assembly. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] like Figures 1 to 4The image shows an embodiment of an electrode appearance inspection device, comprising: a conveying body 10, which includes a drive assembly 80 and a vacuum plate 20. The vacuum plate 20 is provided with a detachable variable section 21, which includes multiple splicing bodies that can be detachably assembled and fitted to achieve adjustable width of the detachable variable section 21; a negative pressure conveyor belt 30, which is sleeved on the outside of the conveying body 10 and is driven and fitted with the drive assembly 80 and can rotate relative to the conveying body 10. The negative pressure conveyor belt 30 is connected to the vacuum plate 20 via an air passage; and a first cover plate group 40 and a second cover plate group 50, wherein the first cover plate group 40 is detachably disposed on the conveying body 10 and arranged on one side of the width direction of the negative pressure conveyor belt 30, and the second cover plate group 50 is detachably disposed on the conveying body 10 and arranged on the other side of the width direction of the negative pressure conveyor belt 30.

[0033] Implementing the embodiments of the present invention will have the following beneficial effects:

[0034] The electrode appearance inspection device of this solution is used in processing applications where the external dimensions of cut electrodes are inspected to determine whether the external dimensions of the cut electrodes meet the design requirements. During operation, the cut electrodes are conveyed onto a negative pressure conveyor belt 30. The vacuum plate 20 generates negative pressure suction on the negative pressure conveyor belt 30, reliably adsorbing and fixing the electrodes onto the surface of the negative pressure conveyor belt 30. The drive assembly 80 drives the negative pressure conveyor belt 30 to rotate, allowing the electrodes to follow the conveyor belt 30 into the inspection station for inspection. When the manufacturing process of the battery cell changes, causing a change in the width of the cut electrodes to be inspected, a detachable variable section 21 with dimensions adapted to the current width of the cut electrodes can be obtained by reasonably disassembling or assembling an appropriate number of splicing bodies. Simultaneously, replacing the first cover plate group 40 and the second cover plate group 50 with appropriately sized components ensures that both sides of the cut electrodes can always extend to both sides of the negative pressure conveyor belt 30 in the width direction to meet the inspection requirements. Furthermore, this solution does not require a complete replacement of the conveyor body 10, nor does it require a redesign and manufacture of the vacuum plate 20. By flexibly assembling an appropriate number of splicing bodies, it can meet the testing requirements of various sizes of electrode sheets. The changeover cost of the electrode sheet appearance inspection device is greatly reduced, the implementation difficulty is low, the changeover cycle is significantly shortened, and production efficiency is guaranteed.

[0035] In an optional embodiment, each splice body is provided with a connected vacuum chamber 211 and a connecting hole. One of two adjacent splice bodies is provided with a first connecting part and the other is provided with a second connecting part. The first connecting part and the second connecting part are detachably connected to allow the two adjacent splice bodies to be assembled, and to connect the two adjacent connecting holes and to connect the two adjacent vacuum chambers 211.

[0036] When connected to the second connecting part through the first connecting part, the connecting holes of two adjacent splicing bodies automatically align and connect. The connection of the connecting holes connects the two adjacent vacuum chambers 211, thereby connecting the vacuum chambers 211 of all splicing bodies in sequence. The advantage of this structural design is that only one of the multiple splicing bodies needs to be connected to the external vacuum generating device through a vacuum pipeline, which can meet the negative pressure requirements of the entire vacuum plate 20 without configuring a vacuum pipeline for each splicing body. This reduces the number of vacuum pipelines used and lowers the difficulty of vacuum pipeline layout and space occupation.

[0037] In order to improve the sealing performance of the two adjacent splicing bodies after assembly and to avoid air leakage affecting the negative pressure effect of the vacuum plate 20 and the negative pressure conveyor belt 30, the conveying body 10 also includes a sealing ring based on the above embodiment. The sealing ring is installed at the joint of two adjacent connecting holes.

[0038] For example, the sealing ring can be made of rubber. It offers high sealing reliability, low cost, and is readily available. Of course, in other embodiments, adjacent connecting holes can also be sealed using a sealing structure.

[0039] In this embodiment, the detachable section 21 is located in the middle section of the vacuum plate 20 and is set corresponding to the inspection station. The inspection station is the area for inspecting the appearance quality of the electrode sheet. Only in this area is it necessary for both ends of the electrode sheet in the width direction to extend to both sides of the negative pressure conveyor belt 30 in the width direction so that it can be illuminated by the light source and photographed by the camera. Therefore, the middle section of the vacuum plate 20 is designed as a detachable section 21 with an adjustable width. This satisfies the inspection requirements while simplifying the structural composition of the conveyor body 10 and reducing the difficulty of the detachment operation.

[0040] Please see Figure 3 Furthermore, in this application, a first cover plate group 40 and a second cover plate group 50 are respectively installed on both sides of the negative pressure conveyor belt 30 in the width direction. The surfaces of the first cover plate group 40 and the second cover plate group 50 are flush with the surface of the negative pressure conveyor belt 30 and are tightly connected, which can assist the negative pressure conveyor belt 30 in supporting the conveying of the electrode sheets. In some optional embodiments, the first cover plate group 40 and the second cover plate group 50 each include multiple separate plates, which are arranged side by side along the rotation direction of the negative pressure conveyor belt 30.

[0041] When the number of splicing bodies is changed to alter the width of the detachable variable section 21 to accommodate electrode sheets of different sizes, it is necessary to simultaneously replace the first cover plate group 40, the second cover plate group 50, and the negative pressure conveyor belt 30 with matching sizes. Designing the first cover plate group 40 and the second cover plate group 50 as multiple separate plates with smaller size and weight makes it easier to disassemble and install the separate plates.

[0042] Please refer to the figure. Figure 1 , Figure 2 and Figure 4 In addition, based on any of the above embodiments, the electrode appearance inspection device further includes a detection light source assembly 60. The detection light source assembly 60 is disposed on the conveying body 10 and located within the inspection station. The detection light source assembly 60 is used to illuminate the back side of the electrode. The detection light source assembly 60 illuminates the back side of the electrode to supplement the light and increase the brightness, thereby improving the brightness and clarity of the subsequent image captured of the electrode.

[0043] Specifically, in the above embodiment, the detection light source assembly 60 includes a telescopic driver 61 and a backlight 62. The telescopic driver 61 is disposed on the conveying body 10, and the telescopic shaft of the telescopic driver 61 is connected to the backlight 62 to drive the backlight 62 to telescopically move along the width direction of the negative pressure conveyor belt 30.

[0044] The backlight 62 is driven to extend and retract by the telescopic driver 61, which adjusts the extension distance of the backlight 62, so that the backlight 62 can flexibly adapt to the different width values ​​of the detachable variable segment 21 after adjustment, and ensure the illumination effect of the backlight 62 on the electrode.

[0045] Optionally, the telescopic actuator 61 can be any one of a cylinder, an electric actuator, a hydraulic cylinder, etc.

[0046] In addition, in an optional embodiment, the electrode appearance inspection device further includes an inspection camera assembly 70, which is mounted above the negative pressure conveyor belt 30 and arranged corresponding to the inspection station. The inspection camera assembly 70 is used to capture images of the electrodes located on the negative pressure conveyor belt 30 to analyze and obtain the external dimensions of the electrodes.

[0047] Specifically, the detection camera assembly 70 includes a mounting bracket 71, a first bracket 72, a second bracket 73, a first vision camera 74, and a second vision camera 75. The first bracket 72 is movably mounted on the mounting bracket 71 and connected to the first vision camera 74, and the second bracket 73 is movably mounted on the mounting bracket 71 and connected to the second vision camera 75. The first vision camera 74 is located upstream of the second vision camera 75 on the electrode conveying path, and / or the first vision camera 74 and the second vision camera 75 are staggered in the direction perpendicular to the electrode conveying path.

[0048] By moving the first bracket 72 and the second bracket 73 on the mounting bracket 71, the working positions of the first vision camera 74 and the second vision camera 75 can be changed, thereby meeting the image capture requirements of the electrode film whose size has changed. The first bracket 72 and the second bracket 73 can be connected to the mounting bracket 71 using any of the following moving structures: pulley rail, slider rail, etc. Furthermore, the movement of the first bracket 72 and the second bracket 73 can be achieved manually or automatically by configuring a drive device.

[0049] Furthermore, by arranging the first vision camera 74 and the second vision camera 75 in an upstream-downstream position along the electrode's transport path, the electrode can be photographed twice consecutively. By comparing the two detection results, the shape and size of the electrode can be determined more accurately. Alternatively, when the electrode is wide enough that a single vision camera is insufficient to capture its entire shape, simultaneously setting the first vision camera 74 and the second vision camera 75 allows for collaborative image capture of the entire electrode, ensuring effective detection. Optionally, the first vision camera 74 and the second vision camera 75 can specifically be CCD cameras (charge-coupled devices).

[0050] The present invention also proposes a battery processing system, which includes an electrode appearance inspection device as described in any of the above embodiments.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electrode appearance inspection device, characterized in that, include: The conveying body includes a drive assembly and a vacuum plate. The vacuum plate is provided with a detachable variable section, which includes multiple splicing bodies. The multiple splicing bodies can be detachably assembled and matched to realize the width of the detachable variable section is adjustable. The detachable variable section is set corresponding to the detection station. The size of the detachable variable section is adapted to the width of the electrode. The two sides of the electrode in the width direction extend to the two sides of the negative pressure conveyor belt in the width direction. A negative pressure conveyor belt is sleeved on the outside of the conveying body, and the negative pressure conveyor belt is driven and cooperated with the drive assembly and can rotate relative to the conveying body. The negative pressure conveyor belt is connected to the vacuum plate air passage, and the vacuum plate generates negative pressure suction on the negative pressure conveyor belt. as well as A first cover plate assembly and a second cover plate assembly, wherein the first cover plate assembly is detachably disposed on the conveying body and arranged on one side of the width direction of the negative pressure conveyor belt, and the second cover plate assembly is detachably disposed on the conveying body and arranged on the other side of the width direction of the negative pressure conveyor belt; The electrode appearance inspection device also includes an inspection light source assembly, which is disposed on the conveying body and located in the inspection station. The inspection light source assembly is used to illuminate the back of the electrode. The detection light source assembly includes a telescopic driver and a backlight. The telescopic driver is disposed on the conveying body, and the telescopic shaft of the telescopic driver is connected to the backlight to drive the backlight to telescopically move along the width direction of the negative pressure conveyor belt, and adjust the extension distance of the backlight to adapt to the width of the adjusted detachable variable section.

2. The electrode appearance inspection device as described in claim 1, characterized in that, Each of the splicing bodies is provided with a connected vacuum chamber and a connecting hole. One of two adjacent splicing bodies is provided with a first connecting part and the other is provided with a second connecting part. The first connecting part and the second connecting part are detachably connected to allow the two adjacent splicing bodies to be assembled, and to connect the two adjacent connecting holes and to connect the two adjacent vacuum chambers.

3. The electrode appearance inspection device as described in claim 2, characterized in that, The conveying body also includes a sealing ring, which is sealed at the junction of two adjacent connecting holes.

4. The electrode appearance inspection device as described in claim 1, characterized in that, The detachable section is located in the middle section of the vacuum plate.

5. The electrode appearance inspection device as described in claim 1, characterized in that, Both the first cover plate group and the second cover plate group include multiple split plates, which are arranged side by side along the rotation direction of the negative pressure conveyor belt.

6. The electrode appearance inspection device as described in claim 1, characterized in that, The electrode appearance inspection device also includes an inspection camera assembly, which is installed above the negative pressure conveyor belt and arranged corresponding to the inspection station. The inspection camera assembly is used to capture images of the electrodes located on the negative pressure conveyor belt to analyze and obtain the shape and size of the electrodes.

7. The electrode appearance inspection device as described in claim 6, characterized in that, The detection camera assembly includes a mounting bracket, a first hanger, a second hanger, a first vision camera, and a second vision camera. The first hanger is movably mounted on the mounting bracket and connected to the first vision camera, and the second hanger is movably mounted on the mounting bracket and connected to the second vision camera. The first vision camera is located upstream of the second vision camera on the electrode transport path, and / or the first vision camera and the second vision camera are staggered in a direction perpendicular to the electrode transport path.

8. A battery processing system, characterized in that, Includes the electrode appearance inspection device as described in any one of claims 1 to 7.

Images