Stacking device and battery production system

Abstract

The present application relates to a stacking device and a battery production system. The stacking device comprises a stacking table, a transfer mechanism, and detection mechanisms. The transfer mechanism is used for transferring electrode sheets to the stacking table. The stacking device further comprises detection mechanisms, and the detection mechanisms are located on at least one side of the stacking table, and are used for performing burr detection on the electrode sheets on the transfer mechanism. The detection mechanisms are arranged on at least one side of the stacking table, and the detection mechanisms are controlled to perform burr detection on the electrode sheets on the transfer mechanism. When the transfer mechanism transfers the electrode sheets to the stacking table, the detection mechanisms perform burr detection on the electrode sheets, so that the electrode sheets are subjected to detection during the transfer process, thereby achieving in-line full detection of burrs, effectively balancing stacking efficiency and burr detection effectiveness, and facilitating improvement of battery quality.

Description

Stacking equipment and battery production system Related applications

[0001] This application claims priority to Chinese patent application filed on March 13, 2025, with application number 2025204364956 and entitled “Laminating Device and Battery Production System”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of battery manufacturing technology, and in particular to stacking equipment and battery manufacturing systems. Background Technology

[0003] In the stacking process, positive and negative electrode sheets need to be cut to the required size, and then stacked sequentially to form the desired battery. During stacking, burrs on the electrode sheets must be inspected to reduce the risk of short circuits caused by burrs. However, due to the structural design limitations of traditional stacking devices, it is impossible to effectively balance stacking efficiency and burr detection, thus affecting battery quality. Summary of the Invention

[0004] Therefore, it is necessary to provide a stacking device and battery production system that effectively balances stacking efficiency and burr detection, thereby improving battery quality.

[0005] In a first aspect, this application provides a stacking apparatus, which includes: a stacking platform; a transfer mechanism for transferring electrodes onto the stacking platform; wherein the stacking apparatus further includes a detection mechanism located on at least one side of the stacking platform for detecting burrs on the electrodes on the transfer mechanism.

[0006] The aforementioned stacking device incorporates a detection mechanism on at least one side of the stacking platform, which is then controlled to perform burr detection on the electrode sheets on the transfer mechanism. As the transfer mechanism transfers the electrode sheets to the stacking platform, the detection mechanism performs burr detection, ensuring that the electrode sheets are inspected during the transfer process. This achieves full-line burr inspection, effectively balancing stacking efficiency and burr detection effectiveness, thus improving battery quality.

[0007] In some embodiments, the detection mechanism includes an adjustment component and an imager. The adjustment component is used to adjust the distance between the imager and the electrode, and the imager is used to detect burrs on the edges of the electrode. This design, with the introduction of the adjustment component, facilitates the adjustment of the distance between the imager and the electrode, ensuring that the distance between them meets the depth of field of the imager, thereby obtaining clearer image information and improving the burr detection effect.

[0008] In some embodiments, the camera's shooting direction is horizontal. This design, with the electrode's shooting direction horizontal, facilitates horizontal shooting of the electrode's edge, making burr detection more effective and accurate, and improving the burr detection effect.

[0009] In some embodiments, the imager includes at least two imagers, with an image gap formed between the two imagers to allow the electrode sheet to pass through, one end of which leads to the stacking platform. This design creates an image gap between the two imagers, allowing burr detection to be completed as the electrode sheet passes through the gap, thereby further improving the efficiency of burr detection.

[0010] In some embodiments, the detection mechanism further includes an illumination element for providing light to the camera. This design, by introducing the illumination element, provides sufficient light to the camera, facilitating the acquisition of clearer images and thus improving the burr detection effect.

[0011] In some embodiments, the stacking device further includes a collection body for receiving non-compliant electrodes. This design, with the introduction of the collection body, facilitates the unified collection of non-compliant electrodes.

[0012] In some embodiments, the collection body is located on at least one side of the stack and below the detection end of the detection mechanism. This design, placing the collection body below the detection mechanism, allows non-compliant electrode sheets to fall into the collection body, improving the electrode sheet recycling efficiency.

[0013] In some embodiments, the stacking apparatus further includes a correction mechanism located upstream of the detection mechanism. This correction mechanism is used to correct the position of the electrode sheets, and a transfer mechanism is used to transfer the corrected electrode sheets to the detection mechanism. This design, by introducing a correction mechanism, corrects the position of the electrode sheets, ensuring they are consistent with the set position, thus facilitating stable burr detection and stacking operations.

[0014] In some embodiments, the alignment mechanism includes a support member and a moving component. The support member supports the electrode sheet, and the moving component drives the support member to move in at least one direction to adjust the distance between the electrode sheet and the detection mechanism. This design, by using the moving component to drive the support member to move in at least one direction and change the position of the support member, allows the electrode sheet to be adjusted to a set position, which helps to improve the quality of the stacked electrode sheets.

[0015] In some embodiments, the correction mechanism further includes a rotating component for driving the support member to rotate about a direction perpendicular to its own support surface. This design, by introducing the rotating component, drives the support member to rotate the electrode sheet, adjusting the electrode sheet's placement angle and facilitating its adjustment to a set position. This improves burr detection and stacking efficiency.

[0016] In some embodiments, the stacking apparatus further includes a polarization correction camera, which is used to acquire the position and size information of the electrode before polarization correction. This design, by introducing a polarization correction camera to acquire the position and size information of the electrode before polarization correction, facilitates the polarization correction of the electrode, enabling stable stacking and inspection operations.

[0017] In some embodiments, the stacking apparatus further includes a conveying mechanism located upstream of the web-aligning mechanism, and a transfer mechanism for transferring the electrode sheets from the conveying mechanism to the web-aligning mechanism. This design, through the conveying mechanism, provides a stable supply of electrode sheets for the stacking process, ensuring stable stacking.

[0018] In some embodiments, the transfer mechanism includes a support beam and at least one pickup component slidably disposed on the support beam. The pickup component is used to pick up or release the electrode sheet and can be moved to the detection mechanism and the stacking platform, respectively. This design, with the transfer mechanism consisting of a support beam and a pickup component, facilitates the stable transfer of the electrode sheet to the detection mechanism and the stacking platform.

[0019] Secondly, this application provides a battery production system, which includes the stacking device described above. Attached Figure Description

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

[0021] Figure 1 is a schematic diagram of the stacking device described in some embodiments of this application.

[0022] Figure 2 is a schematic diagram of the structure of the testing mechanism described in some embodiments of this application.

[0023] Figure 3 is a schematic diagram of the correction mechanism described in some embodiments of this application.

[0024] 100. Stacking device; 10. Stacking platform; 20. Detection mechanism; 21. Adjustment component; 211. Driver; 212. Adjustment seat; 22. Imager; 23. Illumination component; 30. Collector; 40. Correction mechanism; 41. Support component; 42. Moving component; 43. Rotating component; 50. Correction camera; 60. Conveying mechanism; 70. Transfer mechanism; 71. Support beam; 72. Pickup component; 200. Electrode; X, Shooting direction. Detailed Implementation

[0025] 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, and 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.

[0026] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0027] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0028] Furthermore, where the terms "first" and "second" appear, these terms are 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. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0032] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0033] The components in a battery that undergo electrochemical reactions generally include the positive electrode, separator, and negative electrode. These components can be connected using either a winding process or a stacking process. In the stacking process, the positive and negative electrodes need to be cut to the required dimensions, and then stacked sequentially to form the desired battery. During stacking, the burrs on the electrodes must be inspected. If the burrs on the cut edges exceed the specified limits, it can cause a short circuit in the battery, directly affecting its quality.

[0034] Considering efficiency issues, traditional stacking devices typically use sampling to detect burrs on the cut edges of the electrodes. However, sampling cannot eliminate electrodes with excessive burrs, thus failing to effectively balance stacking efficiency and burr detection.

[0035] Therefore, addressing the problem that traditional stacking devices cannot effectively balance stacking efficiency and burr detection, this application provides a stacking device that incorporates a detection mechanism on at least one side of the stacking platform. This detection mechanism performs burr detection on the electrodes on the transfer mechanism. As the transfer mechanism transfers the electrodes to the stacking platform, the detection mechanism performs burr detection, ensuring that the electrodes are inspected during the transfer process. This achieves full-line burr inspection, effectively balancing stacking efficiency and burr detection, thus improving battery quality.

[0036] According to some embodiments of this application, referring to FIG1, this application provides a stacking apparatus 100, which includes a stacking platform 10, a transfer mechanism 70, and a detection mechanism 20. The transfer mechanism 70 is used to transfer an electrode 200 onto the stacking platform 10; wherein, the stacking apparatus 100 further includes a detection mechanism 20, which is located on at least one side of the stacking platform 10, and is used to perform burr detection on the electrode 200 on the transfer mechanism 70.

[0037] The stacking platform 10 refers to a platform structure for stacking the electrode sheets 200. For example, the transfer mechanism 70 sequentially stacks the cut positive electrode sheet, negative electrode sheet, and separator onto the stacking platform 10, so that the electrode sheets 200 are sequentially stacked to form the required battery. The stacking platform 10 can have various designs. For example, it can be a simple plate structure; or it can be a combination of a plate structure and a linear module, which facilitates the movement of the plate structure in the corresponding direction.

[0038] The transfer mechanism 70 refers to a structure that can transfer the electrode 200 onto the stacking platform 10. The transfer mechanism 70 can be a multi-axis robot, or a combination of multiple linear modules and suction cups, etc. At the same time, the transfer mechanism 70 can use adsorption to pick up the electrode 200 to reduce damage to the electrode 200 during the transfer process.

[0039] The inspection mechanism 20 refers to a device capable of detecting burrs on the electrode 200. For example, it can acquire image information of the electrode 200's edge to determine if there are raised burr structures at the edge; or it can detect the flatness or roughness of the electrode 200's edge to determine the burr condition of the electrode 200. The inspection mechanism 20 can be located on one side of the stacking platform 10 or on opposite sides of the stacking platform 10. When the inspection mechanism 20 is located on opposite sides of the stacking platform 10, the positive and negative electrode sheets can be transferred from opposite sides of the stacking platform 10 to the stacking platform 10 respectively, and are then inspected for burrs by the inspection mechanisms 20 on both sides.

[0040] It is understandable that the inspection mechanism 20 can perform burr detection on the electrode 200 on the transfer mechanism 70, indicating that the electrode 200 can be inspected by the inspection mechanism 20 before being released by the transfer mechanism 70 to determine whether the burrs on the electrode 200 meet the requirements. Specifically, in some examples, the transfer mechanism 70 can pass through the inspection mechanism 20 and the stacking platform 10 sequentially. This allows the electrode 200 to be inspected online by the inspection mechanism 20 while being carried by the transfer mechanism 70, achieving effective full inspection. Simultaneously, during the inspection process, there is no need to transfer the electrode 200 outside the stacking process or stop the stacking process, which helps improve stacking efficiency.

[0041] This design allows the electrode 200 to be detected during the transfer process, achieving full inspection of burrs on the line. It effectively balances stacking efficiency and burr detection effect, which is beneficial to improving battery quality.

[0042] According to some embodiments of this application, referring to Figures 1 and 2, the detection mechanism 20 includes an adjustment component 21 and an imager 22. The adjustment component 21 is used to adjust the distance between the imager 22 and the electrode 200, and the imager 22 is used to detect burrs on the edge of the electrode 200.

[0043] The image capture device 22 refers to a device capable of acquiring the position and image information of the electrode 200, such as a charge-coupled device (CCD) or a CMOS image sensor. The image capture device 22 can have various shooting angles at the edge of the electrode 200. For example, the image capture device 22 can be positioned above or below the edge of the electrode 200, capturing the edge of the electrode 200 in a vertical direction; or, the image capture device 22 can be located on the same horizontal plane as the electrode 200, and on one side of the edge of the electrode 200. In some specific examples, there are at least two image capture devices 22, with at least one image capture device 22 on each of the two edges of the electrode 200 along its width direction. The image capture device 22 captures the edge from one side of the edge of the electrode 200 to obtain image information on the edge.

[0044] During the lamination process, the edges of the electrode 200 can be trimmed to meet the required dimensions. After trimming, burrs may appear on the edges of the electrode 200. If the burrs do not meet the specifications, they can easily puncture the separator, causing a short circuit in the battery. Therefore, the camera 22 performs burr detection on the edges of the electrode 200, which helps improve the effectiveness of burr detection.

[0045] The adjustment component 21 refers to the structure capable of adjusting the distance between the imager 22 and the electrode 200. When the imager 22 accurately detects the edge of the electrode 200, it needs a certain shooting distance to obtain clearer image information. For example, if the distance between the imager 22 and the electrode 200 exceeds the depth of field of the imager 22, the adjustment component 21 can be used to drive the imager 22 closer to one side of the electrode 200, so that the distance matches the depth of field of the imager 22. It can be understood that the distance between the imager 22 and the electrode 200 refers to the distance between the imager 22 and the electrode 200 along the shooting direction X of the imager 22.

[0046] There are various structural designs for the adjusting component 21. The adjusting component 21 can be a cylinder, hydraulic cylinder, electric cylinder, etc., or it can be a combination of a motor and a transmission mechanism, such as a combination of a motor and a lead screw mechanism, a combination of a motor and a gear and rack, a combination of a motor and a crank and slider mechanism, etc.

[0047] This design incorporates an adjustment component 21, which facilitates adjusting the distance between the imager 22 and the electrode 200, ensuring that the distance between them meets the depth of field requirements of the imager 22, thereby obtaining clearer image information and improving the burr detection effect.

[0048] According to some embodiments of this application, please refer to Figures 1 and 2, the shooting direction X of the camera 22 is horizontal.

[0049] The shooting direction X refers to the direction in which one end of the camera 22 is facing. The shooting direction X is horizontal, which means that the camera 22 shoots the edge of the electrode 200 in a horizontal direction. In this way, the camera 22 can shoot the edge of the electrode 200 along the direction of the surface of the electrode 200, which makes it easier to detect burrs at the edge.

[0050] In some examples, please refer to Figure 1. At least one imager 22 can be set on each side of the electrode 200 along the shooting direction X of the imager 22. The shooting ends of the imagers 22 on both sides are set facing each other. In this way, when the electrode 200 passes between the imagers 22 on both sides, burr detection can be completed quickly, improving detection efficiency.

[0051] This design, with the X-direction of the electrode 200 being horizontal, facilitates horizontal shooting of the edge of the electrode 200, making burr detection more effective and accurate, and improving the burr detection effect.

[0052] According to some embodiments of this application, referring to FIG1, the camera 22 includes at least two cameras, wherein a shooting gap is formed between the two cameras 22 for the electrode 200 to pass through, and one end of the shooting gap leads to the stack 10.

[0053] It is understood that two of the cameras 22 are located on either side of the movement path of the electrode 200 on the transfer mechanism 70. This facilitates the smooth passage of the electrode 200 between the cameras 22 on both sides under the action of the transfer mechanism 70. The movement path of the electrode 200 refers to the path formed by the transfer mechanism 70 transferring the electrode 200 to the stacking platform 10. At least one camera 22 is set on each side of the movement path of the electrode 200, so that a shooting gap is formed between them. In this way, when the electrode 200 passes through the shooting gap under the action of the transfer mechanism 70, it can be detected for burrs by the cameras 22 on both sides. One end of the shooting gap leads to the stacking platform 10, so that the movement path of the electrode 200 is located in the shooting gap, thereby enabling the electrode 200 to move onto the stacking platform 10 under the action of the transfer mechanism 70.

[0054] On either side of the moving path of the electrode 200, there can be one or more cameras 22. When there are multiple cameras 22, they are distributed at intervals along the moving path of the electrode 200 on either side.

[0055] In addition, the cameras 22 located on both sides of the shooting gap can be adjusted by the same adjustment component 21, or they can be adjusted by different adjustment components 21. Specifically, in some embodiments, there are multiple adjustment components 21 and cameras 22, and they are set one-to-one. The adjustment component 21 is used to drive the camera 22 corresponding to itself to move toward or away from the shooting gap.

[0056] This design creates a shooting gap between the two cameras 22, allowing the electrode 200 to complete burr detection as it passes through the shooting gap, thereby further improving the efficiency of burr detection.

[0057] According to some embodiments of this application, referring to FIG2, the detection mechanism 20 further includes an illumination element 23 for providing illumination to the camera 22.

[0058] The illumination element 23 can be positioned in front of the camera 22 or to the side of the camera 22, as long as it can provide effective illumination for the camera 22 to capture images. Furthermore, during adjustment, the illumination element 23 can move synchronously with the camera 22; for example, both the illumination element 23 and the camera 22 can be connected to the adjustment assembly 21.

[0059] In some specific examples, please refer to Figure 2. The adjustment assembly 21 includes a driver 211 and an adjustment base 212. The driver 211 is used to drive the adjustment base 212 to move. The lighting element 23 and the camera 22 are both disposed on the adjustment base 212, and the lighting element 23 is located in front of the camera 22. At the same time, in order to reduce obstruction of the camera 22, the lighting element 23 is provided with a perforation, and one end of the camera 22 is positioned facing the perforation.

[0060] This design introduces an illumination element 23 to provide sufficient light for the camera 22, making it easier to obtain clearer images and thus improving the burr detection effect.

[0061] According to some embodiments of this application, referring to FIG1, the stacking device 100 further includes a collection body 30 for receiving non-compliant electrode sheets 200.

[0062] Non-compliant electrode 200 refers to electrode 200 whose edge burr quantity, size specifications, and other parameters do not meet the set conditions. If such electrode 200 is used in the stacking process, it is highly likely to puncture the separator, causing a short circuit in the battery. The specific conditions for non-compliance depend on the actual requirements of the stacking process.

[0063] When the testing agency 20 detects that the burrs on the electrode 200 do not meet the requirements, the transfer mechanism 70 transfers the electrode 200 to the collection body 30, so that the non-compliant electrode 200 can be collected in a unified manner. The collection body 30 may be designed in the form of, but is not limited to, a box or a barrel.

[0064] This design introduces a collection body 30, which facilitates the unified recycling of electrode sheets 200 that do not meet the requirements.

[0065] According to some embodiments of this application, referring to FIG1, the collection body 30 is located on at least one side of the stack 10 and below the detection end of the detection mechanism 20.

[0066] When the testing mechanism 20 detects that the electrode 200 does not meet the requirements, the transfer mechanism 70 can release the electrode 200, causing it to fall into the collection body 30 below for quick recovery. At this time, the transfer mechanism 70 is in an unloaded state and does not move onto the stacking platform 10.

[0067] This design places the collection body 30 below the detection mechanism 20, allowing non-compliant electrode sheets 200 to fall into the collection body 30, thus improving the recycling efficiency of the electrode sheets 200.

[0068] According to some embodiments of this application, referring to FIG1, the stacking device 100 further includes a correction mechanism 40, which is located upstream of the detection mechanism 20 and is used to correct the position of the electrode 200. The transfer mechanism 70 is used to transfer the corrected electrode 200 to the detection mechanism 20.

[0069] The alignment mechanism 40 is a device that adjusts the position of the electrode 200 to ensure that its position remains consistent. When the electrode 200 is placed in the alignment mechanism 40, its position may deviate from the set position. If the electrode 200 is directly transferred to the stacking platform 10 via the transfer mechanism 70, it is easy for the electrodes 200 to become misaligned, affecting the stability of the battery structure. It may also collide with the detection mechanism 20, damaging the equipment. Therefore, the alignment mechanism 40 corrects the alignment, ensuring that the position of the electrode 200 matches the set position, thus allowing the electrode 200 to effectively pass through the detection mechanism 20 and complete the effective stacking operation.

[0070] The alignment mechanism 40 can move the electrode 200 in different directions, allowing it to move to a set position. Simultaneously, the alignment mechanism 40 can also rotate the electrode 200 to adjust its placement angle.

[0071] This design incorporates a correction mechanism 40 to correct the position of the electrode 200, ensuring it aligns with the set position, thus facilitating stable burr detection and stacking operations.

[0072] According to some embodiments of this application, referring to FIG3, the correction mechanism 40 includes a support member 41 and a moving component 42. The support member 41 is used to support the electrode 200, and the moving component 42 is used to drive the support member 41 to move in at least one direction to adjust the distance between the electrode 200 and the detection mechanism 20.

[0073] The support 41 refers to the structure on which the electrode 200 can be placed. It can be designed as a plate structure or a block structure. In order to ensure that the electrode 200 is stably placed on the support 41, the support 41 can be provided with adsorption holes, and the electrode 200 can be stably adsorbed on the support 41 by using negative pressure.

[0074] When the electrode 200 is placed on the support 41, the moving component 42 drives the support 41 to move in at least one direction, thereby adjusting the electrode 200 to a set position. The support 41 can move in multiple directions under the drive of the moving component 42, for example, along the moving path of the electrode 200; or, along a direction intersecting the moving path of the electrode 200.

[0075] The moving component 42 can be designed in various ways, including as a cylinder, hydraulic cylinder, electric cylinder, or a combination of a motor and transmission mechanism, such as a combination of a motor and a lead screw mechanism, a combination of a motor and a gear and rack mechanism, or a combination of a motor and a crank-slider mechanism. Alternatively, it can be one or more linear modules.

[0076] This design utilizes the moving component 42 to drive the support member 41 to move in at least one direction, changing the position of the support member 41 so that the electrode 200 is adjusted to the set position, which is beneficial to improving the quality of the stacked electrode.

[0077] According to some embodiments of this application, referring to FIG3, the correction mechanism 40 further includes a rotating component 43, which is used to drive the support member 41 to rotate about a direction perpendicular to its own support surface.

[0078] The rotating component 43 refers to a structure that can drive the supporting surface of the support member 41 to rotate, which can be, but is not limited to, a motor. The rotating component 43 drives the support member 41 to rotate, which can change the placement angle of the electrode 200, which not only facilitates the detection mechanism 20 to perform burr detection, but also makes it easier to keep the individual electrode 200 aligned during stacking.

[0079] This design introduces a rotating component 43, which drives the support component 41 to rotate the electrode 200, adjusting the placement angle of the electrode 200. This makes it easier to adjust the electrode 200 to the set position, which helps to improve the burr detection effect and the stacking effect.

[0080] According to some embodiments of this application, referring to FIG1, the stacking device 100 further includes a correction camera 50, which is used to acquire the position and size information of the electrode 200 before correction.

[0081] During the stacking process, the correction camera 50 can acquire the position of the electrode 200 before correction. If the current position deviates from the set position, the correction mechanism 40 can adjust the electrode 200 to the set position. Simultaneously, using the acquired electrode 200 size information, the current distance between the edge of the electrode 200 and the detection mechanism 20 can be calculated. If the current distance does not meet the detection requirements, such as exceeding the depth of field of the detection mechanism 20, the position of the detection mechanism 20 can be adjusted to better detect the electrode 200. Specifically, in some examples, the detection mechanism 20 includes an adjustment component 21 and an imager 22. The correction camera 50 receives feedback on the size of the electrode 200 and determines whether the distance between the electrode 200 and the imager 22 meets the depth of field of the imager 22. If not, the adjustment component 21 drives the imager 22 to move, adjusting the distance between the imager 22 and the electrode 200 to meet the depth of field of the imager 22.

[0082] Among them, the correction camera 50 can be, but is not limited to, a charge-coupled device (CCD), a CMOS image sensor, etc.

[0083] This design introduces a correction camera 50 to obtain the position and size information of the electrode 200 before correction, which facilitates the correction of the electrode 200 and makes the stacking and inspection operations stable.

[0084] According to some embodiments of this application, referring to FIG1, the stacking device 100 further includes a conveying mechanism 60, which is located upstream of the correction mechanism 40, and a transfer mechanism 70 is used to transfer the electrode 200 on the conveying mechanism 60 to the correction mechanism 40.

[0085] The conveying mechanism 60 refers to the structure that transports the electrode sheets 200 to the loading position. For example, it can be, but is not limited to, a belt conveyor, chain conveyor, roller conveyor, etc. In some specific examples, the conveying mechanism 60 includes a motor driving a belt to rotate, using the belt to transport each electrode sheet 200 to the loading position. Simultaneously, to shorten the overall length of the stacking device 100, the conveying direction of the conveying mechanism 60 can intersect with the movement path of the electrode sheets 200 on the transfer mechanism 70.

[0086] The number of conveying mechanisms 60 can be one or more. In some specific examples, there are two conveying mechanisms 60, two correction mechanisms 40 and two detection mechanisms 20. On either side of the stack 10, the conveying mechanism 60, the correction mechanism 40 and the detection mechanism 20 are distributed in sequence, and the detection mechanism 20 is closer to the stack 10.

[0087] This design, through the conveying mechanism 60, provides a stable supply of electrode sheets 200 for the stacking process, ensuring stable stacking.

[0088] According to some embodiments of this application, referring to FIG1, the transfer mechanism 70 includes a support beam 71 and at least one pickup component 72 slidably disposed on the support beam 71. The pickup component 72 is used to pick up or release the electrode 200 and can be moved to the detection mechanism 20 and the stack 10 respectively.

[0089] The pickup component 72 refers to a structure capable of picking up or releasing the electrode 200, for example, by gripping or adsorbing the electrode 200. During the stacking process, the pickup component 72 picks up the electrode 200 and slides on the support beam 71, moving it to the detection mechanism 20; during the transfer of the electrode 200 to the stacking platform 10, the detection mechanism 20 simultaneously performs burr detection on the electrode 200; if the electrode 200 meets the requirements, the pickup component 72 releases the electrode 200 onto the stacking platform 10.

[0090] In some specific examples, the pickup component 72 includes a movable component and a suction cup mounted on the movable component. The suction cup is used to attract or release the electrode 200, and the movable component is slidably mounted on the support beam 71. The sliding method of the movable component on the support beam 71 can be varied, such as by using a guide rail or a sliding groove. Of course, the movement of the movable component can be manually or automatically driven, for example, by a cylinder, hydraulic cylinder, electric cylinder, or motor. Simultaneously, the size of the suction cup can be smaller than the width of the electrode 200 along its own width direction; for example, the distance between the suction cup and the edge of the electrode 200 along its own width direction is less than or equal to 5mm.

[0091] The number of pickup components 72 can be one or more. For example, at least one pickup component 72 can be provided on either side of the stack 10 to facilitate the transfer of positive and negative electrode sheets onto the stack 10. In some specific examples, on either side of the stack 10, there are two pickup components 72. One pickup component 72 is used to transfer the electrode sheet 200 of the conveying mechanism 60 to the correction mechanism 40; the other pickup component 72 is used to transfer the corrected electrode sheet 200 sequentially to the detection mechanism 20 and the collection body 30, or sequentially to the detection mechanism 20 and the stack 10.

[0092] This design incorporates the transfer mechanism 70 as a support beam 71 and a pickup assembly 72, facilitating the stable transfer of the electrode 200 to the testing mechanism 20 and the stacking platform 10.

[0093] According to some embodiments of this application, this application provides a battery production system, which includes the stacking device 100 of any of the above.

[0094] According to some embodiments of this application, referring to Figures 1 to 3, this application provides a stacking device 100, which includes a conveying mechanism 60, a correction mechanism 40, a correction camera 50, a detection mechanism 20, a stacking platform 10, and a transfer mechanism 70. The conveying mechanism 60, the correction mechanism 40, and the detection mechanism 20 are sequentially arranged on opposite sides of the stacking platform 10. The conveying mechanism 60 conveys the electrode 200 to the loading position, and the transfer mechanism 70 transfers the electrode 200 from the loading position to the correction mechanism 40. The correction mechanism 40 corrects the electrode 200, and the corrected electrode 200, under the action of the transfer mechanism 70, undergoes burr detection by the detection mechanism 20. If it meets the requirements, it is placed on the stacking platform 10; if it does not meet the requirements, it is released into the collection body 30. The correction camera 50 acquires the position information of the electrode 200 before correction, and the correction mechanism 40 corrects the electrode 200 according to the position information, so that the electrode 200 is located in a set position. Simultaneously, the correction camera 50 can also acquire the size of the electrode 200, and the detection mechanism 20 can adjust its own depth of field based on the size of the electrode 200. At this time, the detection mechanism 20 includes an adjustment component 21 and an imager 22, and the adjustment component 21 is used to adjust the position of the imager 22.

[0095] 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.

[0096] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

A stacking device, the stacking device comprising: Stacking platform (10); A transfer mechanism (70) is used to transfer the electrode (200) onto the stack (10); The stacking device further includes a detection mechanism (20), which is located on at least one side of the stacking platform (10) and is used to detect burrs on the electrode sheets (200) on the transfer mechanism (70). According to claim 1, the stacking apparatus, wherein, The detection mechanism (20) includes an adjustment component (21) and an imager (22). The adjustment component (21) is used to adjust the distance between the imager (22) and the electrode (200). The imager (22) is used to detect burrs on the edge of the electrode (200). According to claim 2, the stacking device, wherein, The shooting direction (X) of the camera (22) is horizontal. The stacking apparatus according to claim 2 or 3, wherein, The camera (22) includes at least two, wherein a shooting gap is formed between the two cameras (22) for the electrode (200) to pass through, and one end of the shooting gap leads to the stack (10). The stacking apparatus according to any one of claims 2-4, wherein, The detection mechanism (20) also includes an illumination element (23) for providing illumination to the camera (22). According to claim 5, the stacking apparatus, wherein, The adjustment assembly (21) includes a driver (211) and an adjustment seat (212). The driver (211) is used to drive the adjustment seat (212) to move. The lighting element (23) and the camera (22) are both disposed on the adjustment seat (212), and the lighting element (23) is located in front of the camera (22). According to claim 6, the stacking apparatus, wherein, The lighting element (23) has a perforation, and one end of the camera (22) is positioned facing the perforation. The stacking apparatus according to any one of claims 1-7, wherein, The stacking device further includes a collector (30) for receiving non-compliant electrodes (200). According to claim 8, the stacking apparatus, wherein, The collecting body (30) is located on at least one side of the stack (10) and below the detection end of the detection mechanism (20). The stacking apparatus according to any one of claims 1-9, wherein, The stacking device further includes a correction mechanism (40), which is located upstream of the detection mechanism (20) and is used to correct the position of the electrode (200). The transfer mechanism (70) is used to transfer the corrected electrode (200) to the detection mechanism (20). According to claim 10, the stacking apparatus, wherein, The correction mechanism (40) includes a support (41) and a moving component (42). The support (41) is used to support the electrode (200), and the moving component (42) is used to drive the support (41) to move in at least one direction to adjust the distance between the electrode (200) and the detection mechanism (20). According to claim 11, the stacking apparatus, wherein, The correction mechanism (40) further includes a rotating component (43) for driving the support member (41) to rotate about a direction perpendicular to its own support surface. The stacking apparatus according to any one of claims 10-12, wherein, The stacking device also includes a correction camera (50), which is used to acquire the position and size information of the electrode (200) before correction. The stacking apparatus according to any one of claims 10-13, wherein, The stacking device further includes a conveying mechanism (60) located upstream of the correction mechanism (40), and a transfer mechanism (70) used to transfer the electrode (200) on the conveying mechanism (60) to the correction mechanism (40). The stacking apparatus according to any one of claims 1-14, wherein, The transfer mechanism (70) includes a support beam (71) and at least one pickup component (72) slidably disposed on the support beam (71). The pickup component (72) is used to pick up or release the electrode (200) and can be moved to the detection mechanism (20) and the stack (10) respectively. According to claim 15, the stacking apparatus, wherein, The pickup component (72) includes a movable part and a suction cup disposed on the movable part. The suction cup is used to adsorb or release the electrode (200). The movable part is slidably disposed on the support beam (71). A battery production system comprising the stacking apparatus according to any one of claims 1-16.

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