Tab detection device and rolling and slitting system

Abstract

The utility model discloses a tab detection device and a rolling and slitting system, and belongs to the technical field of battery production. According to the embodiment of the invention, the image acquisition assembly and the tab identification sensor are arranged on the linear module, and the linear module can be driven by the driving mechanism to move in the direction perpendicular to the tape walking direction of the pole piece, so that the image acquisition assembly and the tab identification sensor can be driven to move; the tab identification sensor can detect the positions of a plurality of tabs on line, and when the tab identification sensor detects the tabs, the image acquisition assembly can acquire the images of the tabs, so that the widths of the tabs can be detected according to the images subsequently, and therefore, the quality of the tabs and the quality of the battery can be improved, and the waste of pole piece resources can be reduced.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a tab detection device and a roll forming and slitting system. Background Technology

[0002] With the development of the lithium battery industry, companies are placing increasingly higher demands on the performance and quality of battery cells. Roll forming can improve the energy density of cell electrodes and is an indispensable process in the production of cell electrodes. After wide-width roll forming, electrode sheets are usually die-cut to obtain tabs, which serve as the leads for the positive and negative electrodes of the battery. Their structure is closely related to the battery's performance.

[0003] If the width of the electrode tabs after die-cutting deviates from the battery specifications, it can easily lead to abnormal quality and waste of a batch of electrode sheets. Therefore, it is of great significance to inspect the width of the electrode tabs after the roll forming machine cuts them. Utility Model Content

[0004] This application provides a tab detection device and a roll forming and slitting system, which can detect the width of multiple tabs online.

[0005] In a first aspect, embodiments of this application provide a tab detection device, including: a drive mechanism, a linear module, and an image acquisition component and a tab recognition sensor disposed in the linear module;

[0006] The drive mechanism is connected to the linear module and is configured to drive the linear module to move the image acquisition component and the electrode recognition sensor in the direction perpendicular to the electrode belt direction. The electrode includes an electrode tab.

[0007] The tab recognition sensor is configured to identify the position of the tab during movement, and the image acquisition component is configured to acquire an image of the tab when the tab recognition sensor detects the tab, and the image is used to detect the width of the tab.

[0008] In this embodiment, the image acquisition component and the tab recognition sensor are mounted on the linear module. Driven by the driving mechanism, the linear module can move perpendicular to the electrode's conveyor direction, thereby moving the image acquisition component and the tab recognition sensor. This allows the tab recognition sensor to detect the positions of multiple tabs online. When the tab recognition sensor detects a tab, the image acquisition component can acquire an image of the tab, enabling subsequent detection of the tab's width based on the image. This improves the quality of the tabs and the battery, while reducing the waste of electrode resources.

[0009] In some embodiments, the linear module includes a base, a drive wheel, a driven wheel, and a belt;

[0010] The driving wheel and the driven wheel are respectively located at both ends of the base. The axis of the driving wheel is connected to the drive shaft of the drive mechanism, and the belt is respectively sleeved on the driving wheel and the driven wheel.

[0011] The drive mechanism drives the drive wheel to rotate, which in turn drives the driven wheel to rotate, thus moving the belt and the image acquisition component and the tab recognition sensor, achieving the effect of online detection of the width of multiple tabs.

[0012] In some embodiments, the device further includes a first limit switch disposed at a first position of the linear module and a second limit switch disposed at a second position; the first limit switch and the second limit switch are used to limit the reciprocating motion of the image acquisition component and the electrode recognition sensor between the first position and the second position.

[0013] By setting limit switches at different positions of the linear module, the image acquisition component and the tab recognition sensor can reciprocate between two positions, thereby enabling online detection of the width of multiple tabs.

[0014] In some embodiments, the image acquisition component includes a bracket and a camera mounted on the bracket, a tab recognition sensor mounted on the bracket, and the bracket mounted on a linear module.

[0015] Because the image acquisition component and the tab recognition sensor are located in the same position on the linear module, when the tab recognition sensor detects the tab, the image acquisition component can accurately acquire the image of the tab, thereby accurately identifying the width of the tab.

[0016] In some embodiments, the electrode identification sensor includes at least one of the following: a color mark sensor and an ultrasonic distance sensor.

[0017] Considering that the colors of light reflected by the tabs and electrodes are different, or that the thicknesses of the tabs and electrodes are different, the position of the tabs can be accurately identified by using a color mark sensor or an ultrasonic distance sensor, which in turn enables the image acquisition component to acquire more accurate images of the tabs.

[0018] Secondly, embodiments of this application provide a roll pressing and slitting system, including a guide roller and an electrode tab detection device as described in the first aspect; the guide roller is configured to guide the electrode sheet on the belt.

[0019] The guide rollers can guide the electrode sheets onto the conveyor belt, allowing the tab detection device to move in a direction perpendicular to the conveyor belt direction for online tab detection. This helps improve the quality of the tabs and the battery, and reduces the waste of electrode sheet resources.

[0020] In some embodiments, a target material layer is formed on the surface of the roller, and the color of the target material layer differs from the color of the tab.

[0021] By forming a material layer of a different color than the tab on the surface of the roller, the tab's recognizability is enhanced, allowing the tab recognition sensor to more accurately identify the tab's position.

[0022] In some embodiments, the target material layer includes a magnetite oxide layer.

[0023] Since the electrode tabs are generally made of copper foil or aluminum foil, a black iron oxide layer is formed on the surface of the roller, which creates a distinct color difference with the electrode tabs, enhancing their recognizability. This allows the electrode tab recognition sensor to accurately identify the position of the electrode tabs.

[0024] In some embodiments, the system further includes a controller;

[0025] The controller is configured to send a drive signal to the drive mechanism when it detects that the roller press is slitting the electrode sheets, and to send an image acquisition signal to the image acquisition component when it receives a target signal from the electrode identification sensor.

[0026] When the roller press is cutting the electrode sheets, the drive mechanism drives the linear module to move, which in turn drives the electrode tab recognition sensor to move. When the electrode tab recognition sensor recognizes the electrode tab, the image acquisition component then acquires the electrode tab image, ensuring the accuracy of the image and thus accurately identifying the width of the electrode tab.

[0027] In some embodiments, the system further includes: a correction system disposed downstream of the tab detection device, configured to adjust the width of the tab if the width of the tab does not match the target width.

[0028] When an abnormality in the width of the tab is detected, the width of the abnormal tab can be adjusted using a correction system, which can reduce the waste of resources caused by product quality defects and save on battery production costs.

[0029] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0030] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0031] Figure 1 This is a front view of a tab detection device according to an embodiment of this application;

[0032] Figure 2 This is a top view of a tab detection device according to an embodiment of this application;

[0033] Figure 3 This is a partially enlarged schematic diagram of a linear module according to an embodiment of this application;

[0034] Figure 4 This is a top view of another electrode detection device according to an embodiment of this application;

[0035] Figure 5 This is a front view of another electrode detection device according to an embodiment of this application;

[0036] Figure 6 This is a front view of a roller pressing and slitting system according to an embodiment of this application;

[0037] Figure 7 This is a top view of a roller pressing and slitting system according to an embodiment of this application.

[0038] The accompanying drawings are not necessarily drawn to scale. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0041] In the description of this application, it should be noted that the terms "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] In the field of new energy, electric vehicles have received widespread attention due to their green and environmentally friendly advantages. The power battery is a crucial component of electric vehicles. Power batteries can include, but are not limited to, three forms: individual battery cells, battery modules, and battery packs.

[0044] A battery cell is the smallest unit that makes up a power battery. A battery cell generally includes a casing, cover, battery cell, liquid reservoir, and other functional components. In applications, several battery cells can be connected via electrical connection structures and fixing structures, and assembled into a battery with a thermal management system. This battery can be directly installed on an electrical device to provide power. Alternatively, several battery cells can be first assembled into a battery module using electrical connection structures and fixing structures, and then several battery modules, along with a thermal management system, can be assembled into an electrical device to provide power. Another option is to integrate several battery modules with a thermal management system into a battery pack, which can then be directly installed on an electrical device to provide power.

[0045] Each battery cell has tabs, which are metal conductors that lead out the positive and negative electrodes from the cell. A cell will have two tabs. The tabs serve as the contact points when the battery is charged and discharged. The tabs are usually multi-layered, that is, the tabs include multiple stacked tabs.

[0046] Tabs can be obtained by rolling and slitting electrode sheets, but in actual slitting, the width of the tabs may be abnormal, that is, the actual width of the tabs may deviate from the width required by the cell, which will affect the quality of the battery.

[0047] To detect the width of the tabs online, this application provides a tab detection device and a roll forming and slitting system. The tab detection device includes a driving mechanism, a linear module, and an image acquisition component and a tab recognition sensor disposed in the linear module. The linear module can move perpendicular to the belt conveyor direction of the electrode under the drive of the driving mechanism, thereby driving the image acquisition component and the tab recognition sensor to move. This allows the tab recognition sensor to detect the position of multiple tabs online. When the tab recognition sensor detects a tab, the image acquisition component can acquire an image of the tab, so that the width of the tab can be detected based on the image. In this way, the quality of the tabs and the quality of the battery can be improved, and the waste of electrode resources can be reduced.

[0048] Figure 1 This is a front view of a tab detection device provided in some embodiments of this application. Figure 2 A side view of a tab detection device provided for some embodiments of this application, such as Figure 1 and Figure 2As shown, the tab detection device 100 may include a drive mechanism 101, a linear module 102, and an image acquisition component 1021 and a tab recognition sensor 1022 disposed in the linear module 102.

[0049] The drive mechanism 101 is connected to the linear module 102. For example, the drive mechanism 101 can be connected to the linear module 102 via a drive shaft or a linkage. The drive mechanism 101 is mainly used to drive the linear module 102 to move along a first direction. For example, the drive mechanism 101 can be a servo motor. The first direction can be a direction perpendicular to the tape transport direction of the electrode s. For example, if the tape transport direction of the electrode s is vertical, then the first direction can be horizontal. Similarly, if the tape transport direction of the electrode s is horizontal, then the first direction can be vertical. Figure 1 Taking the vertical direction of the electrode s as an example, the drive mechanism 101 can drive the linear module 102 to move in the horizontal direction.

[0050] The image acquisition component 1021 is mainly used to acquire images of tabs a. Exemplarily, the image acquisition component 1021 may include a camera, and the type of camera is not limited in this embodiment. In some embodiments, a bracket may also be provided on the linear module 102 to support the image acquisition component 1021. For example, the image acquisition component 1021 may be mounted on the bracket, which can move with the linear module 102. In this way, the image acquisition component 1021 can move with the linear module 102, thereby acquiring images of multiple tabs a and achieving the purpose of online detection of the width of multiple tabs a. Figure 1 Taking a three-pole tab a as an example, the number of pole tabs a can be adjusted according to actual needs in practical applications.

[0051] The electrode identification sensor 1022 is mainly used to identify the position of electrode a, so that the image acquisition component 1021 can acquire an accurate electrode image. For example, the electrode identification sensor 1022 can be located at the same position as the image acquisition component 1021 in the linear module 102. Thus, when the electrode identification sensor 1022 detects electrode a, the image acquisition component 1021 can acquire an image of electrode a, ensuring image accuracy.

[0052] In some embodiments, the electrode identification sensor 1022 can also be mounted on the support of the linear module 102, so that the electrode identification sensor 1022 and the image acquisition component 1021 can move synchronously to achieve the purpose of online detection of multiple electrodes.

[0053] For example, the electrode identification sensor 1022 can be a color mark sensor. When the color mark sensor moves, it can emit light to illuminate the surface of the electrode s. Some of the light will be absorbed by the surface of the electrode s, and the other part of the light will be reflected back to the color mark sensor. Since the color of the light reflected back by the electrode a and the electrode s is different, the color mark sensor can identify the position of the electrode a according to the color of the reflected light.

[0054] For example, the electrode identification sensor 1022 can also be an ultrasonic distance sensor, that is, the ultrasonic distance sensor can emit ultrasonic signals during movement and receive reflected ultrasonic signals. Since the electrode a and the electrode s have different thicknesses, the reflected ultrasonic signals will also change. The position of electrode a can be identified based on the reflected ultrasonic signals.

[0055] For example, the electrode identification sensor 1022 can also be other types of sensors, as long as they can accurately identify the position of electrode a.

[0056] In this embodiment, the electrode recognition sensor 1022 can output a target signal when it recognizes electrode a. The target signal can be, for example, "ON". Exemplarily, if the electrode recognition sensor 1022 does not recognize electrode a, it can output a signal "OFF". Exemplarily, when the electrode recognition sensor 1022 is communicating with the image acquisition component 1021, the image acquisition component 1021 can acquire an image of electrode a upon receiving the target signal.

[0057] For example, when the tab identification sensor 1022 communicates with the controller, after receiving the target signal, the controller can send an image acquisition signal to the image acquisition component 1021. Upon receiving the image acquisition signal, the image acquisition component 1021 can acquire an image of the tab a. The controller here can be the controller in the tab detection device 100, or it can be the controller of other systems such as a roll forming system. The structure of the roll forming system can be seen in the following embodiment.

[0058] Taking the drive mechanism 101 as a servo motor as an example, in some embodiments, the rotation of the servo motor can drive the linear module 102 to move in the direction perpendicular to the electrode strip s. The image acquisition component 1021 and the electrode recognition sensor 1022 can move with the linear module 102. During the movement, the electrode recognition sensor 1022 identifies the position of the electrode a. When the electrode recognition sensor 1022 identifies the electrode a, the image acquisition component 1021 acquires an image of the electrode a, so that the width of the electrode a can be detected based on the image. This avoids the problem of wasting resources due to the actual width of the electrode a not matching the required width of the battery, and saves the production cost of the battery.

[0059] In practical applications, the width of tab a can be detected by the image acquisition component 1021 or by the controller. This application does not limit which method is used.

[0060] refer to Figure 2 and Figure 3 , Figure 3 This is a partially enlarged schematic diagram of the linear module 102. Exemplarily, the linear module 102 may include a base 1023, a drive wheel 1024, and a driven wheel (…). Figure 3 (Not shown) and belt 1025. The drive pulley 1024 and the driven pulley can have the same structure.

[0061] In this embodiment, the driving wheel 1024 and the driven wheel are respectively disposed at both ends of the base 1023. The axis of the driving wheel 1024 is connected to the drive shaft of the drive mechanism 101. The belt 1025 is respectively sleeved on the driving wheel 1024 and the driven wheel. The image acquisition component 1021 and the electrode recognition sensor 1022 can be disposed on the belt 1025 or on the bracket on the belt 1025.

[0062] Thus, the drive mechanism 101 can drive the drive wheel 1024 to rotate via the drive shaft. The rotation of the drive wheel 1024 can drive the rotation of the driven wheel, thereby moving the belt 1025, which in turn drives the image acquisition component 1021 and the tab recognition sensor 1022 to move, achieving the effect of online detection of the width of multiple tabs.

[0063] In some embodiments, the linear module 102 may also consist of a slide rail and a slider. The drive mechanism 101 can drive the slider to move along the slide rail via a drive shaft, which may be a telescopic connecting shaft. In this case, the image acquisition component 1021 and the tab recognition sensor 1022 can be mounted on the slider and move with it, thereby enabling the measurement of multiple tabs.

[0064] In some embodiments, reference Figure 4 The tab detection device 100 may include a first limit switch 1026 disposed at a first position and a second limit switch 1027 disposed at a second position on the linear module 102. The first and second positions may be the two ends of the linear module 102, that is, the first limit switch 1026 may be disposed at one end of the linear module 102 and the second limit switch 1027 may be disposed at the other end of the linear module 102. For example, the first limit switch 1026 may be fixed at the first position and the second limit switch 1027 may be fixed at the second position. Alternatively, the first limit switch 1026 and the second limit switch 1027 may also be slidably disposed on the linear module 102.

[0065] In this embodiment, the first limit switch 1026 and the second limit switch 1027 are used to limit the reciprocating motion of the image acquisition component 1021 and the electrode recognition sensor 1022 between the first position and the second position. That is, the image acquisition component 1021 and the electrode recognition sensor 1022 are disposed between the first limit switch 1026 and the second limit switch 1027.

[0066] For example, when the first limit switch 1026 detects that the image acquisition component 1021 and the electrode recognition sensor 1022 have reached the first position, it can send a first signal to the drive mechanism 101. After receiving the first signal, the drive mechanism 101 can drive the drive wheel 1024 to reverse, thereby causing the image acquisition component 1021 and the electrode recognition sensor 1022 to move closer to the second limit switch 1027. Similarly, when the second limit switch 1027 detects that the image acquisition component 1021 and the electrode recognition sensor 1022 have reached the second position, it can send a second signal to the drive mechanism 101. After receiving the second signal, the drive mechanism 101 can drive the drive wheel 1024 to reverse again, thereby causing the image acquisition component 1021 and the electrode recognition sensor 1022 to move closer to the first limit switch 1026.

[0067] In this embodiment, the first signal can be used to characterize that the image acquisition component 1021 and the electrode recognition sensor 1022 have reached a first position, and the second signal can be used to characterize that the image acquisition component 1021 and the electrode recognition sensor 1022 have reached a second position.

[0068] Thus, by setting limit switches at different positions of the linear module 102, the image acquisition component 1021 and the tab recognition sensor 1022 can reciprocate between two positions, thereby enabling online detection of the width of multiple tabs.

[0069] In some embodiments, reference Figure 5 The image acquisition component 1021 may include a bracket 10211 and a camera 10212 mounted on the bracket 10211. The tab recognition sensor 1022 is mounted on the bracket 10211, and the bracket 10211 is mounted on the linear module 102.

[0070] Because the image acquisition component 1021 and the tab recognition sensor 1022 are located at the same position in the linear module 102, when the tab recognition sensor 1022 recognizes the tab, the image acquisition component 1021 can accurately acquire the image of the tab, thereby accurately identifying the width of the tab.

[0071] In some embodiments, the tab identification sensor 1022 includes at least one of the following: a color mark sensor and an ultrasonic distance sensor. This application does not limit the specific models of the color mark sensor and the ultrasonic distance sensor.

[0072] Considering that the colors of light reflected by the tabs and electrodes are different, or that the thicknesses of the tabs and electrodes are different, the position of the tabs can be accurately identified by using a color mark sensor or an ultrasonic distance sensor, which in turn enables the image acquisition component to acquire more accurate images of the tabs.

[0073] refer to Figures 6-7 This application also provides a roller pressing and slitting system 200. Figure 6 This is a front view of a roller pressing and slitting system 200 provided in an embodiment of this application. Figure 7 This is a top view of a roller pressing and slitting system 200 provided in an embodiment of this application.

[0074] The roll forming and slitting system 200 may include the tab detection device 100 of the above embodiment and a guide roller 201. The guide roller 201 is configured to guide the electrode sheet s on the conveyor belt. The electrode sheet s may be an electrode sheet that has been rolled and slit by a roll forming machine. That is, the roll forming and slitting system 200 provided in this application embodiment can be applied to the scenario of wide-width electrode sheet slitting, thereby enabling the detection of the width of multiple electrode sheets after wide-width slitting.

[0075] For example, such as Figure 6 As shown, the guide roller 201 can guide the electrode sheet s to travel along the direction of the arrow. The drive mechanism 101 of the tab detection device 100 can drive the linear module 102 to move in a direction perpendicular to the direction of the belt travel, thereby enabling online detection of multiple tabs a.

[0076] Still with Figure 6 For example, the electrode s contains three tabs, namely tab a1, tab a2, and tab a3. During movement, when the image acquisition component 1021 and the tab recognition sensor 1022 are located at the leftmost end of the linear module 102, the tab recognition sensor 1022 can identify tab a1, and simultaneously, the image acquisition component 1021 can acquire an image of tab a1. As the image acquisition component 1021 and the tab recognition sensor 1022 move, the tab recognition sensor 1022 can identify the position of tab a2, and simultaneously, the image acquisition component 1021 can acquire an image of tab a2. As the image acquisition component 1021 and the tab recognition sensor 1022 continue to move, the tab recognition sensor 1022 can identify the position of tab a3, and simultaneously, the image acquisition component 1021 can acquire an image of tab a3. In this way, the width of multiple tabs can be detected online by a single tab detection device 100, eliminating the need for a separate detection device for each tab, which saves both equipment space and cost.

[0077] The electrode sheet s can be guided by the roller 201, so that the tab detection device 100 can move in a direction perpendicular to the belt direction to perform online detection of the tab, which helps to improve the quality of the tab and the quality of the battery, and reduce the waste of electrode resources.

[0078] In some embodiments, a target material layer is formed on the surface of the roller 201, and the color of the target material layer differs from the color of the tab.

[0079] By forming a material layer of a different color from the tab on the surface of the roller 201, the tab's recognizability is enhanced, enabling the tab recognition sensor 1022 to more accurately identify the tab's position.

[0080] In some embodiments, the target material layer may include a magnetite oxide layer. Since the tab is generally made of copper foil or aluminum foil, forming a black magnetite oxide layer on the surface of the roller 201 can create a distinct color difference with the tab, enhancing the tab's recognizability and enabling the tab recognition sensor to accurately identify the tab's position.

[0081] In practical applications, the target material layer can also be an oxide layer of other colors, as long as it can be distinguished from the color of the tab.

[0082] In some embodiments, the roll forming and slitting system 200 may further include a controller. This controller may be a Programmable Logic Controller (PLC) or other types of controllers. Taking a PLC as an example, when the PLC detects that the roll forming machine is operating, i.e., slitting electrode sheets, it can send a drive signal to the drive mechanism 101. Upon receiving the drive signal, the drive mechanism 101 can rotate, driving the belt 1025 of the linear module 102 to move, thereby causing the image acquisition component 1021 and the electrode tab recognition sensor 1022 to reciprocate on the linear module 102 to detect multiple electrode tabs.

[0083] For example, after the electrode recognition sensor 1022 detects the position of the electrode, it can send a target signal, such as the signal "ON", to the PLC. After receiving the target signal, the PLC can send an image acquisition signal to the image acquisition component 1021. After receiving the image acquisition signal, the image acquisition component 1021 can perform image acquisition.

[0084] When the roller press is cutting the electrode sheets, the drive mechanism 101 drives the linear module 102 to move, thereby driving the electrode tab recognition sensor 1022 to move. When the electrode tab recognition sensor recognizes the electrode tab, the image acquisition component 1021 acquires the electrode tab image, ensuring the accuracy of the image, and thus accurately identifying the width of the electrode tab.

[0085] In some embodiments, the roll forming and slitting system 200 may further include a correction system located downstream of the tab detection device 100 and configured to adjust the width of the tab if the width of the tab does not match the target width.

[0086] In this embodiment, when an abnormality in the width of the tab is detected, the width of the abnormal tab can be adjusted using a correction system, which can reduce resource waste caused by product quality abnormalities and save battery production costs.

[0087] The embodiments of this application can automatically detect the tabs online using the aforementioned tab detection device, replacing manual labor, reducing the workload, decreasing false detections and missed detections, and improving the accuracy of the detection results. At the same time, when an abnormal tab width is detected, the abnormal tab can be automatically corrected by the correction system, thereby improving the quality of the battery while achieving automated production.

[0088] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A tab detection device, characterized in that, include: The drive mechanism, the linear module, and the image acquisition components and electrode recognition sensors disposed in the linear module; The drive mechanism is connected to the linear module and is configured to drive the linear module to move the image acquisition component and the electrode recognition sensor in a direction perpendicular to the electrode travel direction, wherein the electrode includes an electrode tab; The electrode recognition sensor is configured to identify the position of the electrode during movement, and the image acquisition component is configured to acquire an image of the electrode when the electrode recognition sensor identifies the electrode, the image being used to detect the width of the electrode.

2. The apparatus according to claim 1, characterized in that, The linear module includes a base, a drive wheel, a driven wheel, and a belt; The driving wheel and the driven wheel are respectively disposed at both ends of the base. The axis of the driving wheel is connected to the drive shaft of the drive mechanism. The belt is respectively sleeved on the driving wheel and the driven wheel.

3. The apparatus according to claim 1 or 2, characterized in that, The device further includes a first limit switch disposed at a first position of the linear module and a second limit switch disposed at a second position; the first limit switch and the second limit switch are used to limit the reciprocating motion of the image acquisition component and the electrode recognition sensor between the first position and the second position.

4. The apparatus according to claim 1 or 2, characterized in that, The image acquisition component includes a bracket and a camera mounted on the bracket, the electrode recognition sensor is mounted on the bracket, and the bracket is mounted on the linear module.

5. The apparatus according to claim 1 or 2, characterized in that, The electrode identification sensor includes at least one of the following: a color mark sensor and an ultrasonic distance sensor.

6. A roller pressing and slitting system, characterized in that, It includes a guide roller and an electrode tab detection device as described in any one of claims 1-5; the guide roller is configured to guide the electrode sheet on the belt.

7. The system according to claim 6, characterized in that, The surface of the roller is covered with a target material layer, the color of which differs from the color of the tab.

8. The system according to claim 7, characterized in that, The target material layer includes a magnetite oxide layer.

9. The system according to any one of claims 6-8, characterized in that, The system also includes a controller; The controller is configured to send a drive signal to the drive mechanism when it detects that the roller press is slitting the electrode sheets, and to send an image acquisition signal to the image acquisition component when it receives a target signal from the electrode identification sensor.

10. The system according to claim 9, characterized in that, The system further includes a correction system, which is located downstream of the tab detection device and configured to adjust the width of the tab when the width of the tab does not match the target width.

Images