Pole piece processing equipment, battery production line and control method of pole piece processing equipment

Abstract

The application discloses an electrode sheet processing equipment, a battery production line and a control method of the electrode sheet processing equipment, and relates to the technical field of battery production. The electrode sheet processing equipment can improve the production efficiency and the qualified rate of electrode sheet processing. The electrode sheet processing equipment comprises a unwinding mechanism, an electrode lug forming mechanism, a recovery mechanism and a slitting mechanism. The unwinding mechanism is used for carrying the wound electrode sheet to be processed. The electrode lug forming mechanism is arranged on the extension path of the electrode sheet to be processed and is used for cutting the electrode sheet to be processed. The recovery mechanism is arranged on the extension path of the cut electrode sheet and is located on the side of the electrode lug forming mechanism away from the unwinding mechanism. The recovery mechanism is used for removing the waste formed after the electrode sheet to be processed is cut. The slitting mechanism is arranged on the side of the recovery mechanism away from the electrode lug forming mechanism along the extension path of the cut electrode sheet. The slitting mechanism is used for slitting the cut electrode sheet.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to an electrode processing equipment, a battery production line, and a control method for the electrode processing equipment. Background Technology

[0002] With the rapid development of the lithium battery industry, the demand for high-quality power battery production capacity is increasing. Die-cutting and slitting are key processes in the production of electrode sheets for rechargeable batteries, and their production efficiency and product qualification rate have a significant impact on the final cost of the rechargeable batteries. Related technologies involve a large investment in die-cutting and slitting equipment, requiring a large floor space. There is a need for electrode sheet processing equipment with a more rational layout, smaller footprint, higher production efficiency, and improved product qualification rate. Summary of the Invention

[0003] This application provides an electrode processing equipment, a battery production line, and a control method for the electrode processing equipment. While improving production efficiency, it can also increase the pass rate of electrode processing.

[0004] The first aspect of this application provides an electrode processing apparatus, comprising: an unwinding mechanism, an electrode tab forming mechanism, a recycling mechanism, and a slitting mechanism; wherein, the unwinding mechanism is used to carry the wound electrode to be processed; the electrode tab forming mechanism is disposed on the extension path of the electrode to be processed and is used to cut the electrode to be processed; the recycling mechanism is disposed on the extension path of the cut electrode and is located on the side of the electrode tab forming mechanism away from the unwinding mechanism, and the recycling mechanism is used to remove the waste material formed after cutting the electrode to be processed; along the extension path of the cut electrode, the slitting mechanism is disposed on the side of the recycling mechanism away from the electrode tab forming mechanism, and the slitting mechanism is used to slit the cut electrode.

[0005] The electrode processing equipment provided in this application, due to the presence of an unwinding mechanism, can carry the electrode to be processed wound into a film roll, and can also unwind the electrode to be processed into a strip shape. Furthermore, an electrode tab forming mechanism is provided along the extension path of the electrode to be processed, which can cut the electrode to be processed to form electrode tabs. A recycling mechanism is also provided along the extension path of the cut electrode to forcibly separate waste material adhering to the cut electrode, thereby reducing the risk of electrode tab deformation or strip breakage caused by waste material moving with the cut electrode. Simultaneously, a slitting mechanism is also provided along the extension path of the cut electrode to slit the cut electrode into at least two slit electrode sheets.

[0006] Compared to related technologies, this application sequentially includes a tab forming mechanism and a slitting mechanism along the extension path of the electrode to be processed. These mechanisms allow for the sequential cutting and slitting of the electrode to be processed within a single device, thereby improving production efficiency and reducing the space required for the processing equipment. Furthermore, a recycling mechanism is provided between the tab forming mechanism and the slitting mechanism to forcibly separate any adhering waste materials, minimizing their adverse effects on the already cut electrode and thus increasing the yield rate of the processed electrode.

[0007] In one possible implementation of this application, the recovery mechanism includes an air knife mechanism, which includes an air knife support, an air knife roller shaft, and an air knife body. The air knife roller shaft is rotatably mounted on the air knife support, and the cut electrode sheet moves in contact with the air knife roller shaft. The air knife body is mounted on the air knife support and has a communicating air outlet and air inlet. In the axial direction along the air knife roller shaft, the air outlet faces the electrode tab on the cut electrode sheet from the center of the cut electrode sheet, and the air inlet is used to connect to an air source.

[0008] Because an air knife roller is rotatably mounted on the air knife support, the cut electrode sheet is supported by the air knife roller as it passes through the air knife mechanism. This allows the cut electrode sheet to move stably to the next station along a fixed path around the air knife roller. Simultaneously, the air knife body is mounted on the air knife support, allowing it to be connected to a high-pressure air source. The air outlet of the air knife body faces the tab of the cut electrode sheet from its center. This allows the airflow to blow away waste material adhering to the tab, separating the waste from the tab and reducing the impact of any remaining waste material on the tab.

[0009] In one possible implementation of this application, the air knife mechanism further includes a guide member, a contoured cover, and a negative pressure pipeline; wherein, the guide member is sleeved on the air knife roller shaft along the radial direction of the air knife roller shaft and is located on the side of the tab on the air knife roller shaft away from the air outlet; the contoured cover is mounted on the air knife bracket and is positioned opposite to the guide member, the contoured cover has an inlet and an outlet, the shape of the inlet is adapted to the shape of the guide member and is located on the flow path of the airflow blown out of the outlet, and the outlet is connected to one end of the negative pressure pipeline.

[0010] Because a guide element is installed on the air knife roller shaft of the air knife mechanism, the movement path of the waste material blown away from the electrode tab by the airflow can be guided by the guide element. Furthermore, a contour shroud is installed adjacent to the guide element, allowing the waste material passing through the guide element to enter the contour shroud for collection. Simultaneously, a negative pressure pipeline is connected to the outlet of the contour shroud, which creates negative pressure at the inlet of the contour shroud, facilitating the entry of waste material into the contour shroud. Moreover, the negative pressure pipeline can transport the waste material entering the contour shroud to the storage location.

[0011] In one possible implementation of this application, the recycling mechanism further includes a compression assembly connected to the end of the negative pressure pipeline away from the conformal cover, the compression assembly being used to compress and contain the waste.

[0012] Because a compression component is installed in the recycling mechanism and connected to the negative pressure pipeline of the air knife mechanism, waste transported through the negative pressure pipeline can enter the compression component; and the waste can be compressed by the compression component to reduce the space occupied by the waste, which is beneficial for waste storage and can increase the waste capacity of the compression component.

[0013] In one possible implementation of this application, the electrode processing equipment further includes a first detection component. Along the extension path of the cut electrode, the first detection component is disposed on the side of the air knife mechanism away from the tab forming mechanism. The first detection component is used to acquire image data of the cut electrode.

[0014] Since a first detection component is also provided along the extension path of the cut electrode sheet, image data of the cut electrode sheet after being cleaned by the air knife mechanism can be obtained through the first detection component, and the processing quality of the cut electrode sheet can be judged based on the obtained image data.

[0015] In one possible implementation of this application, the electrode processing equipment further includes a first marking component. Along the extension path of the cut electrode, the first marking component is disposed on the side of the first detection component away from the air knife mechanism. The first detection component is electrically connected to the first marking component. The first detection component is also used to send a marking instruction to the first marking component according to the waste area information. The marking instruction is used to control the first marking component to mark the waste area on the cut electrode.

[0016] Because the electrode processing equipment is equipped with a first marking component that is electrically connected to the first detection component, the defective area on the cut electrode can be marked by the first marking component, which facilitates the processing of the cut electrode containing the defective area in subsequent processing steps, thereby reducing the risk that unqualified cut electrode is used to manufacture battery cells.

[0017] In one possible implementation of this application, the slitting mechanism includes a first support base, a second support base, a first cutter shaft, a second cutter shaft, a slitting blade, and an adjustment assembly; wherein, the first support base and the second support base are connected in the radial direction along the first cutter shaft; the first cutter shaft is rotatably mounted on the first support base, and the second cutter shaft is rotatably mounted on the second support base, and the first cutter shaft and the second cutter shaft are arranged in the same direction; the first cutter shaft and the second cutter shaft are respectively provided with matching slitting blades; the adjustment assembly is disposed between the first support base and the second support base, and in the radial direction along the first cutter shaft, the adjustment assembly is used to adjust the distance between the first support base and the second support base.

[0018] Because the slitting mechanism includes a first support base and a second support base, the first and second cutter shafts can be mounted on these bases respectively, facilitating their installation. Furthermore, an adjustment assembly is provided between the first and second support bases, allowing adjustment of the distance between them, and consequently, the distance between the first and second cutter shafts. This enables the installation of slitting blades of different diameters on the first and second cutter shafts, and also allows for adjustment of the blades using the adjustment assembly to ensure their relative alignment, thereby enhancing the versatility of the slitting mechanism.

[0019] In one possible implementation of this application, the adjustment component includes an adjustment member and a locking member; the adjustment member is slidably disposed between a first support seat and a second support seat, and the locking member is installed on the first support seat or the second support seat, abutting against the adjustment member. During the process of the locking member moving relative to the first support seat towards or away from the adjustment member, the locking member can drive the adjustment member to move relative to the first support seat, so as to adjust the distance between the first support seat and the second support seat.

[0020] By sliding the adjusting member between the first and second support seats, the adjusting member can move relative to the first support seat, thereby changing the distance between the first and second support seats. Simultaneously, by installing the locking member on either the first or second support seat, the adjusting member can be moved relative to the first support seat. After adjusting the distance between the first and second support seats, the locking member can fix the adjusting member relative to the first support seat, preventing free movement and thus maintaining a constant distance between the first and second support seats.

[0021] In one possible implementation of this application, the slitting mechanism further includes a slitting positioning component, which is mounted on a first support and / or a second support, and is used to limit the position of the second support relative to the first support.

[0022] Since a slitting positioning assembly is installed on the first support and / or the second support, the position of the second support relative to the first support can be restricted by the slitting positioning assembly, such as restricting the position of the second support relative to the first support in the axial direction along the first cutter shaft. This can improve the installation accuracy of the first and second supports and reduce the risk of unnecessary movement of the second support relative to the first support, thereby improving the installation accuracy of the slitting cutter.

[0023] In one possible implementation of this application, the slitting mechanism further includes a measuring element, one end of which is connected to a first support and the other end of which is connected to a second support. The measuring element is used to measure the distance between the first support and the second support.

[0024] Because a measuring element is provided between the first support and the second support, the distance between the first support and the second support can be fed back in real time during the adjustment of the distance between them, which facilitates quick and accurate adjustment of the distance between them.

[0025] In one possible implementation of this application, the recycling mechanism further includes a cleaning mechanism. Along the extension path of the slit electrode sheet, the cleaning mechanism is located on the side of the slitting mechanism away from the unwinding mechanism. The cleaning mechanism is connected to the compression assembly. The cleaning mechanism is used to remove impurities on the slit electrode sheet, and the compression assembly is used to compress and contain the impurities.

[0026] Because a cleaning mechanism is provided at the rear end of the slitting mechanism along the extension path of the slitting electrode sheet, impurities and other contaminants adhering to the slitting electrode sheet can be removed by the cleaning mechanism to keep the slitting electrode sheet clean, thereby improving the quality of the battery cell manufactured by sampling the slitting electrode sheet.

[0027] In one possible implementation of this application, the electrode processing equipment further includes multiple drive mechanisms arranged on the extension path of the cut electrode sheet. The drive mechanisms are used to drive the cut electrode sheet or the slit electrode sheet to move away from the tab forming mechanism.

[0028] Because multiple drive mechanisms are provided along the extension path of the cut electrode sheet, on the one hand, the cut or slit electrode sheet can be driven to move by the drive mechanisms, so that the cut or slit electrode sheet can reach the position of the next processing mechanism; on the other hand, the tension of the cut or slit electrode sheet located between the two adjacent drive mechanisms can be controlled by controlling the magnitude of the driving force of the two adjacent drive mechanisms, thereby improving the stability of the movement path of the continuous electrode sheet to be processed, the cut electrode sheet and the slit electrode sheet.

[0029] In one possible implementation of this application, the electrode processing equipment further includes a winding mechanism. Along the extension path of the slit electrode, the winding mechanism is located on the side of the slitting mechanism away from the recycling mechanism. The winding mechanism is used to wind the slit electrode.

[0030] Because a winding mechanism is provided on the extension path of the slit electrode sheet, the slit electrode sheet can be automatically wound and collected by the winding mechanism to form an electrode film roll, which facilitates the storage and use of the electrode sheets to be processed after completing each processing technology.

[0031] In one possible implementation of this application, the winding mechanism includes a first winding component, a second winding component, and a winding-and-changing component; wherein the first winding component and the second winding component are both disposed on the extension path of the slit electrode sheet, and the winding-and-changing component is disposed between the first winding component and the second winding component. The winding-and-changing component is used to guide the slit electrode sheet to move toward the first winding component or the second winding component, so as to wind the slit electrode sheet by the first winding component or the second winding component.

[0032] Because the winding mechanism includes a first winding assembly and a second winding assembly, and a winding-changing assembly is provided between the first and second winding assemblies, the slit electrode sheets can be guided to the first or second winding assembly through the winding-changing assembly. This allows for continuous winding of the slit electrode sheets without having to stop the processing equipment to change the electrode film roll after one winding assembly has completed winding one electrode film roll, thereby improving the processing efficiency of the electrode sheets to be processed.

[0033] In one possible implementation of this application, the winding mechanism further includes a shaping component, which is disposed between the first winding component and the second winding component. The shaping component is used to provide a shaping element on the electrode film roll to fix the end cut edge of the electrode film roll by the shaping element. The electrode film roll is formed by winding the slit electrode by the first winding component or the second winding component.

[0034] Since a shaping component is provided between the first winding assembly and the second winding assembly, a shaping element can be provided on the completed winding electrode film roll through the shaping component, so as to fix the end cut edge on the electrode film roll through the shaping element, thereby reducing the risk of the electrode film roll becoming loose or unraveling.

[0035] In one possible implementation of this application, the winding mechanism further includes a shaping detection component, which is electrically connected to the shaping component. The shaping detection component is used to obtain the position information of the end cut edge on the electrode film roll and send a positioning command to the shaping component according to the position information. The positioning command is used to control the shaping component to set the shaping element.

[0036] Because the winding mechanism is equipped with a shaping detection component that is electrically connected to the shaping component, the position information of the end cut edge on the electrode film roll can be obtained through the shaping detection component. Based on the position information, a positioning command can be sent to the shaping component, which can be controlled to move to the position aligned with the end cut edge. In this way, the shaping component can be placed on the end cut edge, thereby improving the accuracy of placing the shaping component on the electrode film roll.

[0037] In one possible implementation of this application, the winding mechanism further includes a pressing component, which is provided at positions corresponding to the first winding component and the second winding component, respectively. The pressing component is used to press the electrode film roll that is pressed against the first winding component and the second winding component.

[0038] Since each winding assembly is equipped with a pressing component, during the winding of the slit electrode sheet by the first winding assembly or the second winding assembly, the pressing component can be pressed tightly against the electrode film roll, thereby improving the flatness of the winding of the slit electrode sheet.

[0039] In one possible implementation of this application, on the extension path of the electrode to be processed vertically, the unwinding mechanism and the winding mechanism are located on the first side of the electrode to be processed, and the recycling mechanism, the tab forming mechanism and the slitting mechanism are located on the second side of the electrode to be processed. The first side and the second side are opposite sides of the electrode to be processed.

[0040] By setting the unwinding mechanism, winding mechanism, and other mechanisms in the electrode processing equipment on both sides of the electrode to be processed, the loading and unloading area and the area that can be manually operated can be located in two separate areas, which can improve the safety of operation.

[0041] In one possible implementation of this application, the unwinding mechanism includes a first unwinding component, a second unwinding component, and an unwinding and changing component; wherein, both the first unwinding component and the second unwinding component are disposed on the extension path of the electrode to be processed, and the unwinding and changing component is disposed between the first unwinding component and the second unwinding component, and the unwinding and changing component is used to guide the electrode to be processed on the first unwinding component to move closer to the electrode to be processed on the second unwinding component, or to guide the electrode to be processed on the second unwinding component to move closer to the electrode to be processed on the first unwinding component.

[0042] Because the unwinding mechanism includes a first unwinding component and a second unwinding component, and an unwinding and changing component is provided between the first and second unwinding components, the electrode to be processed on one unwinding component can be guided to the other unwinding component via the unwinding and changing component, thus continuously supplying the electrode to be processed to the electrode processing equipment. Furthermore, one of the first and second unwinding components can be used as a buffer to hold the electrode to be processed.

[0043] In one possible implementation of this application, the unwinding mechanism further includes a connecting component, which is disposed between the first unwinding component and the second unwinding component. The connecting component is used to provide a connector to the electrode to be processed on the first unwinding component or the second unwinding component, and the connector is used to connect the electrode to be processed on the first unwinding component and the electrode to be processed on the second unwinding component.

[0044] Since a connecting component is provided between the first unwinding assembly and the second unwinding assembly, a connecting piece can be provided to the electrode sheet to be processed on the first unwinding assembly or the second unwinding assembly through the connecting component, so that the electrode sheet to be processed on the first unwinding assembly and the second unwinding assembly can be connected together under the guidance of the unwinding and changing assembly.

[0045] In one possible implementation of this application, the unwinding mechanism further includes an unwinding detection component, which is electrically connected to the first unwinding assembly and the second unwinding assembly respectively. The unwinding detection component is used to detect the lateral displacement position of the electrode sheet to be processed on the extension path, and sends a correction command to the first unwinding assembly or the second unwinding assembly according to the lateral displacement position. The correction command is used to control the first unwinding assembly or the second unwinding assembly to move in the axial direction along the first unwinding assembly.

[0046] Because an unwinding detection element is installed in the unwinding mechanism, it can detect whether the electrode to be processed has lateral displacement on the extension path. If it is determined that the electrode to be processed has lateral displacement, a correction command can be sent to the first unwinding assembly or the second unwinding assembly to control the first unwinding assembly to move in the axial direction along the first unwinding assembly. This can drive the electrode to be processed back to the preset path, thereby reducing the risk of the electrode to be processed being broken by lateral tension and ensuring that the electrode to be processed always moves along a fixed extension path.

[0047] In one possible implementation of this application, the electrode processing equipment further includes a connecting mechanism. Along the extension path of the electrode to be processed, the connecting mechanism is disposed between the unwinding mechanism and the tab forming mechanism. The connecting mechanism is used to connect broken electrode sheets to be processed.

[0048] Because a connecting mechanism is provided between the unwinding mechanism and the tab forming mechanism, the broken electrode sheets to be processed can be easily connected manually through the connecting structure.

[0049] In one possible implementation of this application, the electrode processing equipment further includes a second detection component. Along the extension path of the electrode to be processed, the second detection component is disposed between the unwinding mechanism and the tab forming mechanism. The second detection component is used to obtain quality information of the electrode to be processed.

[0050] Because a second detection component is provided between the unwinding mechanism and the tab forming mechanism, the quality information of the electrode sheet to be processed can be obtained through the second detection component. If it is determined that there is a quality defect in the electrode sheet to be processed, the electrode sheet with the quality defect can be processed in a timely manner, thereby reducing the risk of unqualified electrode sheets entering the subsequent battery processing process.

[0051] In one possible implementation of this application, the electrode processing equipment further includes a reinforcing mechanism. Along the extension path of the electrode to be processed, the reinforcing mechanism is disposed on the side of the tab forming mechanism near the unwinding mechanism. The reinforcing mechanism is used to prepare a reinforcing portion in the tab region on the electrode to be processed. The tab region includes the area on the electrode to be processed where the tab is formed by cutting.

[0052] Because a reinforcing mechanism is provided on the side of the tab forming mechanism near the unwinding mechanism, a reinforcing part can be prepared in the tab area of ​​the electrode sheet to be processed by the reinforcing mechanism, thereby enabling the tab area of ​​the electrode sheet to be processed after passing through the tab forming mechanism to have high strength.

[0053] In one possible implementation of this application, the electrode processing equipment further includes a third detection component. Along the extension path of the electrode to be processed, the third detection component is disposed on the side of the tab forming mechanism near the unwinding mechanism. The third detection component is used to detect the length of the electrode to be processed passing through the third detection component.

[0054] Because a third detection component is provided on the side of the tab forming mechanism near the unwinding mechanism, the length of the cut electrode sheet after being cut by the tab forming mechanism can be detected by the third detection component, and the length data of the cut electrode sheet can be obtained in a timely manner.

[0055] The second aspect of this application provides a battery production line, which includes: electrode processing equipment, coating equipment, cell winding equipment, and handling equipment provided by any of the above; wherein, the coating equipment is used to coat an active slurry on a current collector to form an electrode to be processed; the cell winding equipment is used to wind a separator and a cut electrode to form a cell; and the handling equipment is used to handle the electrode to be processed onto an unwinding mechanism.

[0056] Because the battery production line is equipped with electrode processing equipment, the production efficiency of electrodes can be improved, as can the pass rate of electrode processing, thereby improving the efficiency and pass rate of battery processing.

[0057] A third aspect of this application provides a control method for an electrode processing apparatus, the electrode processing apparatus including an unwinding mechanism, an electrode tab forming mechanism, a recycling mechanism, and a slitting mechanism; the control method includes: in response to a processing command, controlling the unwinding mechanism to perform an unwinding action, so that the wound electrode to be processed carried on the unwinding mechanism extends along an extension path; controlling the electrode tab forming mechanism to cut the electrode to be processed, so that electrode tabs are formed on the electrode to be processed; controlling the recycling mechanism to collect and store the waste material generated by cutting the electrode to be processed; and controlling the slitting mechanism to slit the cut electrode, so that the cut electrode is divided into at least two slit electrode sheets.

[0058] By responding to processing commands and controlling the unwinding mechanism to perform the unwinding action, the electrode processing equipment can accurately execute each processing action and unwind the electrode sheet to be processed, located on the unwinding mechanism, into a strip shape at a preset speed. Furthermore, the tab forming mechanism is controlled to cut the electrode sheet to be processed, forming tabs with accurate shape and position on the cut electrode sheet. During the cutting process of the tab forming mechanism, the recycling mechanism is controlled to collect and store waste material. This recycling mechanism can forcibly separate waste material adhering to the cut electrode sheet, reducing the risk of tab deformation or strip breakage caused by waste material moving with the cut electrode sheet. Simultaneously, the slitting mechanism is controlled to slit the cut electrode sheet, dividing it into at least two slit electrode sheets, thus obtaining the electrode sheets required for manufacturing battery cells. Therefore, the control method of the electrode processing equipment provided in this application can improve the production efficiency of electrode processing by controlling the tab forming mechanism and the slitting mechanism to cut and slit the electrode to be processed in sequence; and can reduce the adverse effects of waste on the cut electrode by controlling the recycling mechanism to forcibly separate the adhering waste, thereby improving the pass rate of electrode processing.

[0059] In one possible implementation of this application, the unwinding mechanism includes a first unwinding component, a second unwinding component, an unwinding and changing component, and a connecting component; controlling the unwinding mechanism to perform an unwinding action so that the wound electrode sheet to be processed carried on the unwinding mechanism can be extended along the extension path includes: controlling the connecting component to provide a connecting member to the first electrode sheet to be processed on one of the first unwinding component or the second unwinding component; controlling the unwinding and changing component to guide the first electrode sheet to be processed to move towards a second electrode sheet to be processed on the other of the first unwinding component or the second unwinding component, until the first electrode sheet to be processed is connected to the second electrode sheet to be processed as a whole through the connecting member.

[0060] Because the control connection assembly provides a connector to the first electrode to be processed on one of the first unwinding assembly or the second unwinding assembly, and controls the unwinding and rewinding assembly to guide the first electrode to be processed to move towards the second electrode to be processed, the spare first electrode to be processed can be connected to the second electrode to be processed that is about to be used up. Thus, the first electrode to be processed can be brought into the processing mechanism of the electrode processing equipment through the second electrode to be processed, thereby enabling the electrode processing equipment to continuously process the electrode to be processed, which is beneficial to improving the utilization efficiency of the electrode processing equipment and the processing efficiency of the electrode to be processed.

[0061] In one possible implementation of this application, the recycling mechanism includes an air knife mechanism and a compression assembly connected via a negative pressure pipeline; controlling the recycling mechanism to collect and store the waste generated from cutting the electrode sheet to be processed includes: controlling the air knife mechanism to blow airflow onto the tab area on the electrode sheet to be processed, so as to carry the waste into the negative pressure pipeline through the airflow; controlling the compression assembly to compress the waste in the compression assembly passing through the negative pressure pipeline, so as to reduce the volume of the waste, and storing the waste with reduced volume.

[0062] By controlling the air knife mechanism to blow airflow onto the tab area of ​​the electrode sheet to be processed, the airflow can be used as a power source, facilitating the separation of adhering waste from the cut electrode sheet. At the same time, controlling the compression component to compress the collected waste can reduce the volume of the waste, making it easier to store and process it in subsequent processes.

[0063] In one possible implementation of this application, the electrode processing equipment further includes a winding mechanism and a driving mechanism; the control method of the electrode processing equipment includes: controlling the winding mechanism to wind the slit electrode to form an electrode film roll; controlling the driving mechanism to drive the cut electrode and / or the slit electrode to move toward the winding mechanism, wherein the winding mechanism and the driving mechanism are controlled to rotate with different torques so that the tension on the slit electrode is greater than the tension on the cut electrode.

[0064] By controlling the winding mechanism to wind the slit electrode sheets, the strip-shaped slit electrode sheets can be formed into electrode film rolls, facilitating the storage and transportation of these rolls. Simultaneously, controlling the winding and drive mechanisms to rotate with different torques allows the electrode film rolls to be subjected to greater tension, resulting in more neat and regular winding; furthermore, it allows the cut and unprocessed electrode sheets to be subjected to less tension, reducing the risk of breakage. Attached Figure Description

[0065] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 Schematic diagram of the composition structure of the electrode processing equipment provided in this application Figure 1 ; Figure 2 Schematic diagram of the composition structure of the electrode processing equipment provided in this application Figure 2 ; Figure 3 Schematic diagram of the air knife mechanism provided in this application Figure 1 ; Figure 4 Schematic diagram of the air knife mechanism provided in this application Figure 2 ; Figure 5 Schematic diagram of the air knife mechanism provided in this application Figure 3 ; Figure 6 Schematic diagram of the slitting mechanism provided in this application Figure 1 ; Figure 7 Provided for this application Figure 6 A cross-sectional view along the AA direction; Figure 8 Provided for this application Figure 6 A cross-sectional view along the BB direction; Figure 9 Schematic diagram of the slitting mechanism provided in this application Figure 2 ; Figure 10 Schematic diagram of the structure of the electrode film roll provided in this application Figure 1 ; Figure 11 Schematic diagram of the structure of the electrode film roll provided in this application Figure 2 ; Figure 12 A schematic diagram of the structure of the shaping component provided in this application; Figure 13 Flowchart of the control method for the electrode processing equipment provided in this application Figure 1 ; Figure 14 Flowchart of the control method for the electrode processing equipment provided in this application Figure 2 ; Figure 15 Flowchart of the control method for the electrode processing equipment provided in this application Figure 3 ; Figure 16Flowchart of the control method for the electrode processing equipment provided in this application Figure 4 .

[0066] Explanation of reference numerals in the attached figures: 1-Unwinding mechanism; 11-First unwinding assembly; 12-Second unwinding assembly; 13-Unwinding and changing assembly; 14-Connecting assembly; 15-Unwinding detection component; 2-Electrode forming mechanism; 3-Recycling mechanism; 31-Air knife mechanism; 311-Air knife support; 312-Air knife roller; 313-Air knife body; 314-Guide component; 315-Shaping cover; 316-Negative pressure pipeline; 32-Compression mechanism; 33-Cleansing mechanism; 331-Dust removal assembly; 332-Adsorption assembly; 4-Slitting mechanism; 41-First support base; 42-Second support base; 43-First cutter shaft; 44-Second cutter shaft; 45-Slitting knife; 46-Adjustment assembly; 461-Adjustment component; 462-Locking component; 463-Adjustment fixing base; 47 - Slitting and positioning assembly; 48- Measuring component; 49- Slitting base; 40- Bushing; 5- Winding mechanism; 51- First winding assembly; 52- Second winding assembly; 53- Winding and changing assembly; 54- Shaping assembly; 55- Shaping detection assembly; 56- Pressing assembly; 6- Belt splicing mechanism; 7- Reinforcing mechanism; 81- First driving mechanism; 82- Second driving mechanism; 91- First detection assembly; 92- Second detection assembly; 93- Third detection assembly; 94- First marking assembly; 95- Isolator; 01- Electrode sheet to be processed; 02- Cut electrode sheet; 03- Slitting electrode sheet; 04- Electrode film roll; 05- Shaping component; C- Extension path; D- Axial direction; E- Radial direction; F- First side; G- Second side. Detailed Implementation

[0067] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0068] 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 belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms “comprising” and “having”, and any variations thereof, in the specification and the foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0069] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0070] 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.

[0071] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects are in an "or" relationship.

[0072] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed, operated or used in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0073] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" 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. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0074] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical term "contact" should be interpreted broadly, and can be direct contact, contact through an intermediate medium layer, contact between two contacting parties with substantially no interaction force, or contact between two contacting parties with interaction force.

[0075] The following is a detailed description of this application.

[0076] Currently, rechargeable batteries are increasingly widely used in daily life and industry. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of power batteries, the market demand is also constantly increasing.

[0077] In the production of rechargeable batteries, the electrode sheets used to manufacture the cells require multiple processing steps, including die-cutting and slitting. In related technologies, the die-cutting and slitting equipment for electrode processing is set up as independent devices, and the die-cutting and slitting processes are performed independently. While this simplifies the design of the die-cutting and slitting equipment, multiple devices increase both investment costs and the required production space, thus increasing production costs. Furthermore, transferring semi-finished products between multiple devices reduces battery production efficiency. Therefore, there is a need for electrode processing equipment that can improve electrode production efficiency and the yield rate of processed electrodes while minimizing the footprint.

[0078] This application provides an electrode processing apparatus for processing electrode sheets to be manufactured into battery cells. The electrode sheet to be processed can be a thin sheet structure including a current collector and an active material disposed on at least one surface of the current collector in its thickness direction. This electrode processing apparatus can perform various cutting and slitting processes on the electrode sheet to be processed, shaping it into an electrode sheet for manufacturing battery cells. For example, tabs can be cut from both sides of a large, long, thin strip of electrode sheet to be processed, and then the cut electrode sheet with two rows of tabs can be slit into two strip-shaped electrode sheets that can be used to manufacture battery cells. The electrode processing apparatus can also wind the processed strip-shaped electrode sheets to form electrode film rolls, facilitating the transportation and storage of the strip-shaped electrode sheets.

[0079] This application provides an electrode processing device, referring to... Figure 1 and Figure 2 , Figure 1 A schematic diagram of the composition structure of the electrode processing equipment provided in this application is shown. Figure 1 , Figure 2 A schematic diagram of the composition structure of the electrode processing equipment provided in this application is shown. Figure 2 .like Figure 1 and Figure 2As shown, the electrode processing equipment includes: an unwinding mechanism 1, an electrode tab forming mechanism 2, a recycling mechanism 3, and a slitting mechanism 4; wherein, the unwinding mechanism 1 is used to carry the wound electrode 01 to be processed; the electrode tab forming mechanism 2 is set on the extension path C of the electrode 01 to be processed, and is used to cut the electrode 01 to be processed; the recycling mechanism 3 is set on the extension path C of the cut electrode 02, and is located on the side of the electrode tab forming mechanism 2 away from the unwinding mechanism 1, and is used to remove the waste material formed after cutting the electrode 01 to be processed; along the extension path C of the cut electrode 02, the slitting mechanism 4 is set on the side of the recycling mechanism 3 away from the electrode tab forming mechanism 2, and is used to slit the cut electrode 02.

[0080] In this embodiment, the electrode to be processed 01, processed by an electrode processing device, can be an electrode comprising a current collector and an active material, with the active material coated on the surface of the current collector. The current collector can be a metal foil or a composite current collector. To improve the production efficiency of the electrode, the electrode to be processed 01 is typically configured to include at least two current collectors. During the processing of the electrode to be processed 01, it is cut into at least two parts to form at least two cut electrode sheets 03. Before cutting the electrode to be processed 01, multiple tabs can be cut on both sides of the electrode to be processed 01.

[0081] In this embodiment of the application, before processing the electrode 01 to be processed, the electrode 01 to be processed, which is wound into a film roll, needs to be placed on the unwinding mechanism 1 so that the electrode 01 to be processed can be carried by the unwinding mechanism 1. The film roll of the electrode 01 to be processed can be unwound into a strip-shaped electrode 01 on the unwinding mechanism 1.

[0082] In this embodiment of the application, in order to cut and form multiple tabs on the electrode sheet 01 to be processed, a tab forming mechanism 2 can be provided along the extension path C of the strip-shaped electrode sheet 01 to be processed, so as to cut the electrode sheet 01 to be processed by the tab forming mechanism 2.

[0083] For example, the tab forming mechanism 2 can be configured to include at least two laser cutters. The high-power-density laser beam emitted by the laser cutters irradiates the electrode sheet 01 to be processed, rapidly heating it to its vaporization temperature and causing it to evaporate and form holes. As the laser beam moves across the electrode sheet 01, narrower kerfs are continuously formed, completing the cutting of the electrode sheet 01. For instance, by placing two laser cutters on opposite sides of the electrode sheet 01, the two laser cutters can cut the edge portions of the electrode sheet 01, forming two rows of tabs on the electrode sheet 01 to obtain the cut electrode sheet 02. Simultaneously, during the cutting process of the electrode sheet 01 by the tab forming mechanism 2, the cut waste needs to be removed to separate it from the cut electrode sheet 02.

[0084] In some embodiments of this application, the tab forming mechanism 2 may fail to completely sever the waste material from the cut electrode sheet 02. In such cases, the cut electrode sheet 02 may cause the uncut waste material to continue moving to the next processing station. If the adhering waste material is not separated from the cut electrode sheet 02 in time, there is a risk that the waste material may scrape the tab, causing the tab to deform or the cut electrode sheet 02 to break.

[0085] For example, along the extension path C of the cut electrode sheet 02, a recycling mechanism 3 can be provided on the side of the tab forming mechanism 2 away from the unwinding mechanism 1 to promptly remove waste material adhering to the cut electrode sheet 02. For instance, the recycling mechanism 3 can be configured to blow a high-velocity airflow onto the tabs of the cut electrode sheet 02 to blow the waste material away from the cut electrode sheet 02 using a high-speed airflow.

[0086] In this embodiment, after the electrode sheet 01 to be processed is cut, two rows of tabs are formed on both sides of the cut electrode sheet 02. Therefore, the cut electrode sheet 02 needs to be slit to separate it into two slit electrode sheets 03 from the middle. A slitting mechanism 4 can be provided along the extension path C of the cut electrode sheet 02, and the slitting mechanism 4 can be positioned on the side of the recycling mechanism 3 away from the tab forming mechanism 2. This ensures that no waste material adheres to the cut electrode sheet 02 entering the slitting mechanism 4.

[0087] The electrode processing equipment provided in this application embodiment, due to the presence of an unwinding mechanism 1, can carry the electrode 01 to be processed wound into a film roll, and can also unwind the electrode 01 to be processed into a strip shape. Furthermore, an electrode tab forming mechanism 2 is provided along the extension path C of the electrode 01 to be processed, which can cut the electrode 01 to form electrode tabs. Moreover, a recycling mechanism 3 is provided along the extension path C of the cut electrode 02, which can forcibly separate waste material adhering to the cut electrode 02, thereby reducing the risk of electrode tab deformation or strip breakage caused by waste material moving with the cut electrode 02. Meanwhile, a slitting mechanism 4 is also provided on the extension path C of the cut electrode 02, which can be used to slit the cut electrode 02 so that the cut electrode 02 is divided into at least two slit electrode 03.

[0088] Compared to related technologies, this embodiment of the application sequentially arranges an electrode tab forming mechanism 2 and a slitting mechanism 4 along the extension path C of the electrode sheet 01 to be processed. These mechanisms can sequentially cut and slit the electrode sheet 01, allowing for continuous cutting and slitting of the electrode sheet 01 within a single device. This improves the production efficiency of electrode sheet processing and reduces the space occupied by the processing equipment. Simultaneously, a recycling mechanism 3 is provided between the electrode tab forming mechanism 2 and the slitting mechanism 4. The recycling mechanism 3 forcibly separates any adhering waste material, reducing the adverse effects of waste on the cut electrode sheet 02 and thus improving the pass rate of electrode sheet processing.

[0089] In some embodiments, refer to Figure 3 , Figure 4 and Figure 5 , Figure 3 A schematic diagram of the air knife mechanism provided in this application is shown. Figure 1 , Figure 4 A schematic diagram of the air knife mechanism provided in this application is shown. Figure 2 , Figure 5 A schematic diagram of the air knife mechanism provided in this application is shown. Figure 3 The recycling mechanism 3 can be configured to include the air knife mechanism 31. For example... Figure 3 , Figure 4 and Figure 5As shown, the air knife mechanism 31 includes an air knife support 311, an air knife roller shaft 312, and an air knife body 313. The air knife roller shaft 312 is rotatably mounted on the air knife support 311, and the cut electrode 02 moves along the air knife roller shaft 312. The air knife body 313 is mounted on the air knife support 311 and has an air outlet and an air inlet. In the axial direction D along the air knife roller shaft 312, the air outlet is from the center of the cut electrode 02 toward the electrode tab on the cut electrode 02, and the air inlet is used to connect to the air source.

[0090] The air knife bracket 311 in this embodiment is used to support and install other components in the air knife mechanism 31, and can be used to fix the air knife mechanism 31 on the workstation where the electrode sheet is processed. For example, the air knife bracket 311 can be configured as a frame structure or a box structure, etc.

[0091] In this embodiment, an air knife roller shaft 312 can be mounted on the air knife support 311. The air knife roller shaft 312 can be rotatably mounted on the air knife support 311, and its axial direction is perpendicular or nearly perpendicular to the extension path C of the cut electrode sheet 02. For example, the air knife roller shaft 312 can be configured as a cylindrical structure. During the movement of the cut electrode sheet 02 against the surface of the air knife roller shaft 312, the air knife roller shaft 312 rotates with the cut electrode sheet 02. Alternatively, a driving member can be provided for the air knife roller shaft 312 to drive it to rotate autonomously.

[0092] In this embodiment, the air knife body 313 is used to control the direction of the airflow blowing towards the cut electrode sheet 02. The air knife body 313 can be mounted on the air knife bracket 311. An air outlet is provided at one end of the air knife body 313, which can be an elongated opening. An air inlet is provided at the other end of the air knife body 313, which is connected to the air outlet. The air inlet can be a connector to connect the air knife body 313 to the air source. When installing the air knife body 313, the air outlet can be positioned from the center of the cut electrode sheet 02 toward the tabs on the cut electrode sheet 02 along the axial direction D of the air knife roller shaft 312. For example, at least two air knife bodies 313 can be mounted on the air knife bracket 311, with the two air knife bodies 313 facing the two sides of the cut electrode sheet 02 respectively, so as to clean the waste material from the two sets of tabs located on both sides of the cut electrode sheet 02 through the two air knife bodies 313.

[0093] In the above embodiment, since the air knife roller shaft 312 is rotatably mounted on the air knife support 311, the cut electrode sheet 02 can be supported by the air knife roller shaft 312 during the process of passing through the air knife mechanism 31, so that the cut electrode sheet 02 moves stably to the next station around the air knife roller shaft 312 along a fixed path. At the same time, the air knife body 313 is provided on the air knife support 311, and the air knife body 313 can be connected to a high-pressure air source; and the air outlet of the air knife body 313 is oriented from the center of the cut electrode sheet 02 toward the electrode tab of the cut electrode sheet 02. In this way, the waste material attached to the electrode tab can be blown away from the electrode tab by the airflow, so that the waste material is separated from the electrode tab, thereby reducing the impact of the waste material that is not separated from the electrode tab on the electrode tab.

[0094] In some embodiments, such as Figure 3 , Figure 4 and Figure 5 As shown, the air knife mechanism 31 can also be equipped with structural components including a guide 314, a contoured cover 315, and a negative pressure pipeline 316; wherein, the guide 314 is sleeved on the air knife roller shaft 312 along the radial direction E of the air knife roller shaft 312, and is located on the side of the tab on the air knife roller shaft 312 away from the air outlet; the contoured cover 315 is mounted on the air knife bracket 311 and is positioned opposite to the guide 314; the contoured cover 315 has an inlet and an outlet, the shape of the inlet is adapted to the shape of the guide 314 and is located on the flow path of the airflow blown out of the outlet, and the outlet is connected to one end of the negative pressure pipeline 316.

[0095] In this embodiment, a guide member 314 can be provided on the air knife roller shaft 312 to guide the flow direction of the airflow blown from the air outlet of the air knife body 313. For example, the guide member 314 can be a conical tube, which is sleeved on the air knife roller shaft 312. The tube is located on the side of the air knife roller shaft 312 away from the air outlet of the air knife body 313. The larger diameter end of the tube is located further away from the air knife body 313 than the smaller diameter end. The diameter of the smaller diameter end of the tube is adapted to the outer diameter of the air knife roller shaft 312. The tube and the air knife roller shaft 312 can be connected by an interference fit.

[0096] In this embodiment, a contoured cover 315 can also be provided on the air knife support 311. An intake port can be provided at one end of the contoured cover 315. The intake port can be an arc-shaped opening, the size of which is adapted to the size of the conical guide 314, so that the intake port is adjacent to the end of the guide 314 away from the air knife body 313. Furthermore, the intake port is located in the flow path of the airflow from the outlet on the air knife body 313. An outlet can be provided at the other end of the contoured cover 315. In this way, waste material blown away from the tabs by the airflow can enter the contoured cover 315.

[0097] In this embodiment, a negative pressure pipeline 316 can also be provided in the air knife mechanism 31. The negative pressure pipeline 316 can be configured as a structure including an airflow pipe and a negative pressure pump. The negative pressure pump is connected to the airflow pipe and can generate negative pressure in the airflow pipe. One end of the airflow pipe is connected to the outlet of the contour cover 315 so as to connect the negative pressure pipeline 316 to the outlet of the contour cover 315.

[0098] In the above embodiment, since a guide member 314 is provided on the air knife roller shaft 312 of the air knife mechanism 31, the movement path of the waste material blown away from the electrode tab by the airflow can be guided by the guide member 314. Furthermore, a contoured cover 315 is provided adjacent to the guide member 314, allowing the waste material passing through the guide member 314 to enter the contoured cover 315 for collection. Simultaneously, a negative pressure pipe 316 is connected to the outlet of the contoured cover 315, which generates negative pressure at the inlet of the contoured cover 315, facilitating the entry of waste material into the contoured cover 315. Moreover, the waste material entering the contoured cover 315 can be transported to a storage location via the negative pressure pipe 316.

[0099] In some embodiments, such as Figure 1 As shown, a compression component can also be provided in the recycling mechanism 3. The compression component is connected to the end of the negative pressure pipeline 316 away from the contour cover 315. The compression component is used to compress and contain waste materials.

[0100] In this embodiment of the application, in order to facilitate the collection and temporary storage of waste collected by the air knife mechanism 31, a compression component can be set in the electrode processing equipment, and the compression component can be connected to the end of the negative pressure pipeline 316 in the air knife mechanism 31 that is away from the contour cover 315.

[0101] For example, the compression assembly can be configured as a structure including a housing, a compression component, and a drive component. The housing has a receiving cavity and a compression channel; the compression component is movably disposed within the compression channel; the drive component is connected to the compression component and can drive the compression component to move within the compression channel to compress the waste material entering the compression channel. The compressed waste material can then enter the receiving cavity.

[0102] In the above embodiments, since a compression component is provided in the recycling mechanism 3 and the compression component is connected to the negative pressure pipeline 316 of the air knife mechanism 31, the waste material transported through the negative pressure pipeline 316 can enter the compression component; and the waste material can be compressed by the compression component to reduce the space occupied by the waste material, which is beneficial for the storage of waste material and can increase the capacity of the compression component for waste material.

[0103] In some embodiments, such as Figure 1As shown, a first detection component 91 can also be set in the electrode processing equipment; along the extension path C of the cut electrode 02, the first detection component 91 is set on the side of the air knife mechanism 31 away from the electrode tab forming mechanism 2. The first detection component 91 is used to acquire image data of the cut electrode 02, and the image data includes waste area information of the cut electrode 02.

[0104] In this embodiment of the application, in order to determine whether the processing quality of the cut electrode 02 meets the design requirements, a first detection component 91 can be set at the rear end of the air knife mechanism 31 to obtain image data of the cut electrode 02 through the first detection component 91. By analyzing the image data of the cut electrode 02, it can be determined whether the appearance and structural shape of each part on the cut electrode 02 meet the design requirements.

[0105] For example, the first detection component 91 can be configured to include a charge-coupled device (CCD) camera, which can be used to take pictures of the cut electrode 02 to obtain an image of the cut electrode 02.

[0106] In another example, multiple CCD cameras can be set along the extension path C of the cut electrode sheet 02. For example, one CCD camera can be set for each row of electrodes formed on the cut electrode sheet 02 to acquire an image of each row of electrodes. CCD cameras can also be set at the edges of the active material on the cut electrode sheet 02 to acquire images of the edge portions of the active material. CCD cameras can also be set on the front and back sides of the cut electrode sheet 02 respectively to acquire images of the front and back sides of the cut electrode sheet 02. Therefore, based on the acquired images of different parts of the cut electrode sheet 02, the parts can be analyzed to determine whether the quality of the cut electrode sheet 02 meets the design requirements. If quality defects are determined in some parts of the cut electrode sheet 02 based on the images, these defective areas can be recorded based on the acquired image data. The defective area information includes the location information of the defective areas on the cut electrode sheet 02.

[0107] In the above embodiment, since a first detection component 91 is also provided along the extension path C of the cut electrode 02, the image data of the cut electrode 02 after being cleaned by the air knife mechanism 31 can be obtained through the first detection component 91, so as to determine whether the processing quality of the cut electrode 02 is qualified based on the obtained image data.

[0108] In some embodiments, such as Figure 1As shown, the electrode processing equipment also includes a first marking component 94. Along the extension path C of the cut electrode 02, the first marking component 94 is disposed on the side of the first detection component 91 away from the air knife mechanism 31. The first detection component 91 is electrically connected to the first marking component 94. The first detection component 91 is also used to send a marking instruction to the first marking component 94 according to the waste area information. The marking instruction is used to control the first marking component 94 to mark the waste area on the cut electrode 02.

[0109] In this embodiment of the application, if a defective area is detected on the cut electrode 02 by the first detection component 91, this defective area can be marked.

[0110] For example, a first marking component 94 can be disposed adjacent to the first detection component 91 along the extension path C of the cut electrode 02, and the first marking component 94 can be electrically connected to the first detection component 91. For example, the first marking component 94 can be configured to move relative to the first detection component 91 and includes a structure capable of marking on the cut electrode 02. In this way, if the first detection component 91 detects a defective area on the cut electrode 02, a marking command can be sent to the first marking component 94 based on the defective area information. In response to the marking command, the first marking component 94 generates movement relative to the cut electrode 02 and marks the defective area on the cut electrode 02.

[0111] In the above embodiments, since a first marking component 94 electrically connected to the first detection component 91 is provided in the electrode processing equipment, the waste area on the cut electrode 02 can be marked by the first marking component 94, which facilitates the processing of the cut electrode 02 containing the waste area in subsequent processing steps, thereby reducing the risk that unqualified cut electrode 02 is used to manufacture battery cells.

[0112] In some embodiments, refer to Figure 6 , Figure 7 , Figure 8 and Figure 9 , Figure 6 A schematic diagram of the slitting mechanism 4 provided in this application is shown. Figure 1 , Figure 7 This application provides Figure 6 A cross-sectional view along the AA direction. Figure 8 This application provides Figure 6 A cross-sectional view along the BB direction. Figure 9 A schematic diagram of the slitting mechanism 4 provided in this application is shown. Figure 2The slitting mechanism 4 includes a first support base 41, a second support base 42, a first cutter shaft 43, a second cutter shaft 44, a slitting blade 45, and an adjustment assembly 46. The first support base 41 and the second support base 42 are connected along the radial direction E of the first cutter shaft 43. The first cutter shaft 43 is rotatably mounted on the first support base 41, and the second cutter shaft 44 is rotatably mounted on the second support base 42, with the first cutter shaft 43 and the second cutter shaft 44 arranged in the same direction. Matching slitting blades 45 are respectively mounted on the first cutter shaft 43 and the second cutter shaft 44. The adjustment assembly 46 is disposed between the first support base 41 and the second support base 42, and along the radial direction E of the first cutter shaft 43, the adjustment assembly 46 is used to adjust the distance between the first support base 41 and the second support base 42.

[0113] In this embodiment, a first support base 41 and a second support base 42 can be provided in the cutting mechanism 4 to support and mount two cutter shafts. The first support base 41 and the second support base 42 are connected in the radial direction E along the first cutter shaft 43.

[0114] For example, two first support seats 41 and two second support seats 42 can be provided. One first support seat 41 and one second support seat 42 are connected as a group, and another first support seat 41 and another second support seat 42 are connected as a group. The two ends of the first cutter shaft 43 are rotatably mounted on the two first support seats 41, and the two ends of the second cutter shaft 44 are rotatably mounted on the two second support seats 42. The axial direction of the first cutter shaft 43 and the axial direction of the second cutter shaft 44 are aligned, that is, the two cutter shafts are arranged parallel to each other.

[0115] In another example, bushings 40 can be fitted onto the first cutter shaft 43 and the second cutter shaft 44 respectively, with the outer diameter of the bushings 40 being smaller than the outer diameter of the slitting blade 45. The slitting blade 45 can be clamped and fixed onto the first cutter shaft 43 and the second cutter shaft 44 respectively via the bushings 40 in the axial direction D along the first cutter shaft 43.

[0116] In another example, to facilitate the installation of the two sets of support seats, a slitting base 49 can be set in the slitting mechanism 4, and a first support seat 41 can be fixedly installed relative to the slitting base 49. In the axial direction D along the first cutter shaft 43, the other first support seat 41 is movably connected to the slitting base 49.

[0117] In another example, to facilitate adjustment of the distance between the first cutter shaft 43 and the second cutter shaft 44, an adjustment assembly 46 can be provided between the first support 41 and the second support 42. Thus, along the radial direction E of the first cutter shaft 43, the distance between the first support 41 and the second support 42 can be adjusted using the adjustment assembly 46.

[0118] In the above embodiments, since the slitting mechanism 4 is provided with a first support base 41 and a second support base 42, the first cutter shaft 43 and the second cutter shaft 44 can be respectively mounted on the first support base 41 and the second support base 42, facilitating the installation of the two cutter shafts. Furthermore, an adjustment component 46 is provided between the first support base 41 and the second support base 42, which can be used to adjust the distance between the first support base 41 and the second support base 42, thereby adjusting the distance between the first cutter shaft 43 and the second cutter shaft 44. This allows for the installation of slitting blades 45 of different diameters on the first cutter shaft 43 and the second cutter shaft 44, and the adjustment component 46 can be used to adjust the two slitting blades 45 to ensure their relative positioning, thereby improving the applicability of the slitting mechanism 4.

[0119] In some embodiments, such as Figure 8 As shown, the adjustment assembly 46 can be configured to include an adjustment member 461 and a locking member 462. The adjustment member 461 is slidably disposed between the first support base 41 and the second support base 42. The locking member 462 is mounted on the first support base 41 or the second support base 42 and abuts against the adjustment member 461. During the process of the locking member 462 moving towards or away from the adjustment member 461 relative to the first support base 41, the locking member 462 can drive the adjustment member 461 to move relative to the first support base 41, so as to adjust the distance between the first support base 41 and the second support base 42.

[0120] In this embodiment of the application, in order to facilitate the adjustment of the adjustment component 46, an adjusting member 461 and a locking member 462 that abut against each other can be provided in the adjustment component 46.

[0121] For example, the adjusting member 461 can be configured as a wedge block structure. Two wedge blocks can be provided in the adjusting assembly 46, and the two wedge blocks slide against each other in a centrally symmetrical manner. The two wedge blocks are slidably installed between the first support base 41 and the second support base 42, with the first support base 41 and the second support base 42 abutting against each other through the two wedge blocks. In this way, during the relative sliding process of the two wedge blocks, the thickness of the two wedge blocks will change, which can drive the first support base 41 and the second support base 42 to move in the radial direction E along the first cutter shaft 43.

[0122] In another example, the locking element 462 can be mounted on either the first support 41 or the second support 42. For instance, the locking element 462 can be a bolt, with the end of the bolt abutting against the adjusting element 461. Thus, by tightening the bolt, the adjusting element 461 can be moved relative to the first support 41. As the screw moves closer to the wedges, the wedges can move closer together, increasing their thickness and thus the distance between the two cutter shafts. Conversely, as the screw moves away from the wedges, the wedges can move further apart, decreasing their thickness and thus the distance between the two cutter shafts.

[0123] In another example, to facilitate the installation of the locking element 462, an adjusting fixing seat 463 can be fixedly installed on the first support seat 41 or the second support seat 42. The adjusting fixing seat 463 is provided with threaded holes adapted to the bolts, so that the bolts can be installed on the adjusting fixing seat 463.

[0124] In the above embodiments, since the adjusting member 461 is slidably disposed between the first support base 41 and the second support base 42, the adjusting member 461 can move relative to the first support base 41 to change the distance between the first support base 41 and the second support base 42. Simultaneously, by installing the locking member 462 on the first support base 41 or the second support base 42, the adjusting member 461 can be moved via the locking member 462, facilitating movement of the adjusting member 461 relative to the first support base 41. After adjusting the distance between the first support base 41 and the second support base 42, the locking member 462 can fix the adjusting member 461 relative to the first support base 41, preventing it from moving freely, thereby maintaining a constant distance between the first support base 41 and the second support base 42.

[0125] In some embodiments, such as Figure 6 and Figure 9 As shown, the slitting mechanism 4 also includes a slitting positioning component 47, which is mounted on the first support 41 and / or the second support 42. The slitting positioning component 47 is used to limit the position of the second support 42 relative to the first support 41.

[0126] In this embodiment of the application, after the first support base 41 and the second support base 42 are connected, in order to keep the relative positions of the first support base 41 and the second support base 42 unchanged, a cutting and positioning component 47 can be installed on the first support base 41 and the second support base 42, or a cutting and positioning component 47 can be installed on the first support base 41 or the second support base 42 to position the first support base 41 and the second support base 42.

[0127] For example, the cutting and positioning assembly 47 can be configured to include a radial positioning member and an axial positioning member. In the direction perpendicular to the first support 41 to the second support 42, a radial positioning member can be mounted on a first sidewall of the first support 41 and extend to the sidewall of the second support 42. The radial positioning member can restrict the movement of the second support 42 relative to the first support 41 in the direction perpendicular to the first support 41 to the second support 42. For example, the radial positioning member can be configured as a radial positioning block.

[0128] In another example, a groove can be provided on the radial positioning member, extending from the sidewall of the radial positioning member and extending along the direction from the first support 41 to the second support 42. A sliding post adapted to the groove can be provided on the second support 42. During the assembly of the first support 41 and the second support 42, the sliding post engages in the groove, which can improve the accuracy of positioning the first support 41 and the second support 42.

[0129] In another example, an axial positioning element can be mounted on the second sidewall of the first support 41 along the axial direction D of the first cutter shaft 43, extending to the sidewall of the second support 42. For example, the axial positioning element can be an axial positioning block. In this way, the movement of the second support 42 relative to the first support 41 in the axial direction D of the first cutter shaft 43 can be restricted by the axial positioning element.

[0130] It should be noted that the axial and radial positioning components can also be mounted on the second support 42 and extend to the side wall of the first support 41. This application embodiment does not limit the specific installation positions of the axial and radial positioning components.

[0131] In the above embodiments, since the slitting positioning component 47 is installed on the first support 41 and / or the second support 42, the position of the second support 42 relative to the first support 41 can be restricted by the slitting positioning component 47, such as restricting the position of the second support 42 relative to the first support 41 in the axial direction D along the first cutter shaft 43. This can improve the installation accuracy of the first support 41 and the second support 42, and reduce the risk of unnecessary movement of the second support 42 relative to the first support 41, thereby improving the installation accuracy of the slitting cutter 45.

[0132] In some embodiments, such as Figure 6 As shown, the slitting mechanism 4 also includes a measuring element 48, one end of which is connected to the first support 41 and the other end is connected to the second support 42. The measuring element 48 is used to measure the distance between the first support 41 and the second support 42.

[0133] In this embodiment of the application, in order to accurately control the amount of change in the adjusted distance during the process of adjusting the distance between the first support 41 and the second support 42, a measuring element 48 can be provided between the first support 41 and the second support 42 to provide real-time feedback on the distance value between the first support 41 and the second support 42.

[0134] For example, the measuring element 48 can be a digital micrometer, which can be mounted on the first support 41 and its measuring head connected to the second support 42. For instance, a digital micrometer can be provided on both the first support 41 and the second support 42. The measuring element 48 can also be other measuring devices with graduations capable of measuring length and distance; this embodiment of the application does not limit this approach.

[0135] In the above embodiments, since a measuring element 48 is provided between the first support base 41 and the second support base 42, during the process of adjusting the distance between the first support base 41 and the second support base 42, the measuring element 48 can provide real-time feedback on the distance value between the first support base 41 and the second support base 42, which facilitates quick and accurate adjustment of the distance between the first support base 41 and the second support base 42.

[0136] In some embodiments, such as Figure 1 As shown, the recycling mechanism 3 also includes a cleaning mechanism 33. Along the extension path C of the slit electrode 03, the cleaning mechanism 33 is located on the side of the slitting mechanism 4 away from the unwinding mechanism 1. The cleaning mechanism 33 is connected to the compression assembly. The cleaning mechanism 33 is used to remove impurities on the slit electrode 03, and the compression assembly is used to compress and contain the impurities.

[0137] In this embodiment of the application, after the cut electrode sheet 02 is cut by the cutting mechanism 4, some dust or magnetic impurities may exist on the resulting cut electrode sheet 03. Therefore, a cleaning mechanism 33 can be provided at the rear end of the cutting mechanism 4 along the extension path C of the cut electrode sheet 03 to remove the impurities adhering to the cut electrode sheet 02.

[0138] For example, the cleaning mechanism 33 can be configured to include a brush dust removal assembly 331. The brush dust removal assembly 331 abuts against the cut electrode 02 to remove dust and other particles from the cut electrode 02 by brushing the brushes on the brush dust removal assembly 331. Simultaneously, the brush dust removal assembly 331 is connected to a compression assembly via a pipe. The removed dust and other particles can then enter the compression assembly through the pipe for collection and containment.

[0139] In another example, the cleaning mechanism 33 can be configured to include a magnetic rod dust removal assembly 331. The magnetic rod dust removal assembly 331 is positioned adjacent to the cut electrode sheet 02, so that magnetic and magnetically conductive impurities on the cut electrode sheet 02 are adsorbed by the magnetic elements on the magnetic rod dust removal assembly 331. Simultaneously, the magnetic rod dust removal assembly 331 is connected to a compression assembly via a conduit. Impurities adsorbed from the cut electrode sheet 02 can then enter the compression assembly through the conduit, where the magnetic and magnetically conductive impurities are collected and contained.

[0140] In the above embodiment, since a cleaning mechanism 33 is provided at the rear end of the slitting mechanism 4 along the extension path C of the slitting electrode 03, impurities and other contaminants adhering to the slitting electrode 02 can be removed by the cleaning mechanism 33, so that the slitting electrode 02 is kept clean, thereby improving the quality of the battery cell manufactured by sampling the slitting electrode 02.

[0141] In some embodiments, such as Figure 1 As shown, the electrode processing equipment also includes multiple drive mechanisms, which are arranged on the extension path C of the cut electrode 02. The drive mechanisms are used to drive the cut electrode 02 or the slit electrode to move away from the tab forming mechanism 2.

[0142] In this embodiment, the electrode to be processed 01 needs to move sequentially along the various mechanisms in the electrode slitting device. At least two driving mechanisms can be provided in the electrode processing device to drive the electrode to be processed 01 to move along the extension path C of the electrode to be processed 01. At least two driving mechanisms can be provided at the rear end of the tab forming mechanism 2 along the extension path C of the cut electrode 02.

[0143] For example, a first drive mechanism 81 can be provided on the side of the air knife mechanism 31 away from the tab forming mechanism 2. The first drive mechanism 81 can be configured to include a drive roller and a driven roller. The cut electrode 02 passes between the drive roller and the driven roller, and the driven roller presses the cut electrode 02 against the drive roller. The drive roller is connected to a drive member, which can drive the drive roller to rotate, thereby moving the cut electrode 02 away from the air knife mechanism 31.

[0144] In another example, a second drive mechanism 82 can be provided on the side of the cleaning mechanism 33 away from the tab forming mechanism 2. The second drive mechanism 82 can also be configured to include a drive roller and a driven roller. The slit electrode 03 passes between the drive roller and the driven roller, and can be driven by the drive roller to move the slit electrode 03 away from the slitting mechanism 4.

[0145] In the above embodiments, since multiple driving mechanisms are provided along the extension path C of the cut electrode 02, on the one hand, the cut electrode 02 or the slit electrode 03 can be driven to move by the driving mechanisms, so that the cut electrode 02 or the slit electrode 03 can reach the position of the next processing mechanism; on the other hand, the tension of the cut electrode 02 or the slit electrode 03 located between the two adjacent driving mechanisms can be controlled by controlling the magnitude of the driving force of the two adjacent driving mechanisms, thereby improving the stability of the movement path of the continuous electrode 01 to be processed, the cut electrode 02 and the slit electrode 03.

[0146] In some embodiments, such as Figure 1 As shown, the electrode processing equipment also includes a winding mechanism 5. Along the extension path C of the slit electrode 03, the winding mechanism 5 is located on the side of the slitting mechanism 4 away from the recycling mechanism 3. The winding mechanism 5 is used to wind the slit electrode 03.

[0147] In this embodiment of the application, after the cut electrode sheet 02 is cut by the cutting mechanism 4, at least two cut electrode sheets 03 can be obtained. At this point, the cutting and slitting process of the electrode sheet 01 to be processed is completed, and the cut electrode sheets 03 need to be wound and collected.

[0148] For example, a winding mechanism 5 is provided on each of the two extension paths C of the slit electrode sheets 03, and the winding mechanism 5 is located on the side of the slitting mechanism 4 away from the recycling mechanism 3. In this way, the slit electrode sheets 03 can be wound by the winding mechanism 5.

[0149] In the above embodiments, since a winding mechanism 5 is provided on the extension path C of the slit electrode sheet 03, the slit electrode sheet 03 can be automatically wound and collected by the winding mechanism 5 so that the slit electrode sheet 03 is formed into an electrode film roll, thereby facilitating the storage and use of the electrode sheet 01 to be processed after completing each processing process.

[0150] In some embodiments, such as Figure 1 As shown, the winding mechanism 5 includes a first winding assembly 51, a second winding assembly 52, and a winding-and-changing assembly 53; wherein, the first winding assembly 51 and the second winding assembly 52 are both disposed on the extension path C of the slit electrode sheet 03, and the winding-and-changing assembly 53 is disposed between the first winding assembly 51 and the second winding assembly 52. ​​The winding-and-changing assembly 53 is used to guide the slit electrode sheet 03 to move toward the first winding assembly 51 or the second winding assembly 52, so as to wind the slit electrode sheet 03 by the first winding assembly 51 or the second winding assembly 52.

[0151] In this embodiment of the application, two winding components can be set in a winding mechanism 5, and the slit electrode sheet 03 can be wound alternately by the two winding components to improve the winding efficiency.

[0152] For example, adjacent first winding assembly 51 and second winding assembly 52 can be set along the extension path C of the slit electrode 03. Both the first winding assembly 51 and the second winding assembly 52 can rotate to wind the slit electrode 03.

[0153] In another example, a take-up and change-up assembly 53 can be provided between the first take-up assembly 51 and the second take-up assembly 52. ​​After the slit electrode sheet 03 reaches the take-up and change-up assembly 53 via the second drive mechanism 82, the take-up and change-up assembly 53 can guide the slit electrode sheet 03 to either the first take-up assembly 51 or the second take-up assembly 52. ​​For example, after winding an electrode film roll by the first take-up assembly 51, the slit electrode sheet can be guided by the take-up and change-up assembly 53 to the second take-up assembly 52 so that the slit electrode sheet 03 can continue to be wound by the second take-up assembly 52.

[0154] In another example, the tension on the slit electrode 03 can be increased by controlling the winding torque of the first winding assembly 51 or the second winding assembly 52. ​​This increases the frictional force on each layer of the slit electrode 03 in the wound electrode film roll, effectively reducing the risk of the wound electrode film roll becoming loose or uneven on the sides.

[0155] In the above embodiments, since the winding mechanism 5 is provided with a first winding component 51 and a second winding component 52, and a winding-and-changing component 53 is provided between the first winding component 51 and the second winding component 52, the slit electrode sheet 03 can be guided to the first winding component 51 or the second winding component 52 by the winding-and-changing component 53, so that the slit electrode sheet 03 can be continuously wound, without having to stop the processing equipment to change the electrode film roll after a winding component has completed winding a single electrode film roll, thereby improving the processing efficiency of the electrode sheet 01 to be processed.

[0156] In some embodiments, such as Figure 1 As shown, the winding mechanism 5 also includes a shaping component 54, which is disposed between the first winding component 51 and the second winding component 52. The shaping component 54 is used to set a shaping element on the electrode film roll to fix the end cut edge of the electrode film roll by the shaping element. The electrode film roll is formed by winding the slit electrode 03 by the first winding component 51 or the second winding component 52.

[0157] In this embodiment of the application, after the electrode film roll is wound by the first winding assembly 51 or the second winding assembly 52, the cut edges of the slit electrode 03 on the electrode film roll are in a free state and need to be fixed to prevent the wound electrode film roll from unraveling.

[0158] For example, a shaping component 54 may be provided between the first winding component 51 and the second winding component 52. The shaping component 54 may be moved toward the first winding component 51 or the second winding component 52 to provide a shaping element on the completed winding electrode film roll and to set the shaping element on the end cut edge to fix the end cut edge.

[0159] Reference Figure 10 , Figure 11 and Figure 12 , Figure 10 A schematic diagram of the structure of the electrode film roll provided in this application is shown. Figure 1 , Figure 11 A schematic diagram of the structure of the electrode film roll provided in this application is shown. Figure 2 , Figure 12 A structural schematic diagram of the shaping component provided in this application is shown. For example... Figure 12 As shown, the shaping component 05 can be made of adhesive tape, etc. A dotted tear line is provided on the adhesive tape, and the direction of the dotted tear line is the same as the axial direction D of the adhesive tape roll. The adhesive tape roll can be placed on the shaping component 54, which facilitates the removal of the same size adhesive tape from the roll each time. The adhesive tape can be adhered to the electrode film roll using the shaping component 54. For example, as... Figure 11 As shown, three or more adhesive tapes can be pasted on the cut edge at the end of the electrode film roll to fix the cut edge at the end with adhesive tape.

[0160] In the above embodiments, since a shaping component 54 is provided between the first winding component 51 and the second winding component 52, a shaping member 05 can be provided on the completed winding electrode film roll by the shaping component 54, so as to fix the end cut edge on the electrode film roll by the shaping member 05, thereby reducing the risk of the electrode film roll becoming loose or unraveling.

[0161] In some embodiments, such as Figure 1 As shown, the winding mechanism 5 also includes a shaping detection component 55, which is electrically connected to the shaping component 54. The shaping detection component 55 is used to obtain the position information of the end cut edge on the electrode film roll, and sends a positioning command to the shaping component 54 according to the position information. The positioning command is used to control the shaping component 54 to set the shaping element 05.

[0162] In this embodiment, there may be instances where the position of the end-cut edge on each electrode film roll wound by the first winding assembly 51 or the second winding assembly 52 changes. In such cases, the shaping assembly 54 may not be able to accurately position the shaping member 05 on the end-cut edge during the process of setting the shaping member 05 on the electrode film roll. Therefore, a shaping detection assembly 55 can be provided between the first winding assembly 51 and the second winding assembly 52 to determine the position of the end-cut edge on the electrode film roll.

[0163] For example, the shape detection component 55 can be configured to include a drive unit and a CCD camera. The CCD camera is mounted on the drive unit, which moves the CCD camera so that it faces the electrode film roll on the first winding component 51 or the second winding component 52. In this way, the CCD camera can take pictures of the electrode film roll to obtain an image including the end trimmed edge. By analyzing the image of the electrode film roll, positional information, including the location of the end trimmed edge on the electrode film roll, can be obtained.

[0164] In another example, the shaping detection component 55 can be electrically connected to the shaping component 54, that is, the shaping detection component 55 can be electrically connected to the drive unit in the shaping component. In this way, a positioning command can be sent to the shaping component 54 based on the acquired position information of the end trimming edge. The positioning command includes the position information of the end trimming edge. Responding to the positioning command, the drive unit in the shaping component 54 moves the shaping component 54 to a position aligned with the end trimming edge, thereby accurately setting the shaping component 05 on the end trimming edge.

[0165] In the above embodiments, since the winding mechanism 5 is provided with a shaping detection component 55 electrically connected to the shaping component 54, the position information of the end cut edge on the electrode film roll can be obtained through the shaping detection component 55. Therefore, a positioning command can be sent to the shaping component 54 according to the position information, and the shaping component 54 can be controlled to move to the position aligned with the end cut edge. In this way, the shaping component 05 can be placed on the end cut edge, thereby improving the accuracy of placing the shaping component 05 on the electrode film roll.

[0166] In some embodiments, such as Figure 1 As shown, the winding mechanism 5 also includes a pressing component 56. A pressing component 56 is provided at a position corresponding to the first winding component 51 and the second winding component 52, respectively. The pressing component 56 is used to press the electrode film roll that is pressed against the first winding component 51 and the second winding component 52.

[0167] In this embodiment, each winding assembly can be provided with a pressing component 56. The pressing component 56 can be configured to include a driving member and a pressing roller shaft. The driving member can drive the pressing roller shaft to move axially closer to the electrode film roll on the winding assembly, so that the pressing roller shaft presses against the electrode film roll. A certain pressure can be applied to the electrode film roll through the pressing roller shaft.

[0168] In the above embodiments, since each winding assembly is provided with a pressing component 56, during the winding process of the slit electrode sheet by the first winding assembly 51 or the second winding assembly 52, the pressing component 56 can be pressed against the electrode sheet roll, thereby improving the flatness of the winding of the slit electrode sheet 03.

[0169] In some embodiments, such as Figure 2 As shown, on the extension path C of the electrode to be processed 01, the unwinding mechanism 1 and the winding mechanism 5 are located on the first side F of the electrode to be processed 01, and the recycling mechanism 3 and the slitting mechanism 4 are located on the second side G of the electrode to be processed 01. The first side F and the second side G are opposite sides of the electrode to be processed 01.

[0170] In this embodiment of the application, when setting the position of each mechanism in the electrode mechanism device, each mechanism can be set on a different side of the extension path C of the electrode to be processed 01.

[0171] For example, along the extension path C perpendicular to the electrode 01 to be processed, the unwinding mechanism 1 and the winding mechanism 5 located at both ends of the electrode processing equipment can be positioned on the first side F of the electrode 01 to be processed. That is, when operating the unwinding mechanism 1, during the process of feeding and placing the electrode 01 to be processed onto the unwinding mechanism 1, the operation needs to be performed on the first side F. Similarly, when operating the winding mechanism 5, during the process of removing the electrode film roll from the winding mechanism 5, the operation also needs to be performed on the first side F.

[0172] In another example, an isolation element 95 can be set between the various processing mechanisms. The isolation element 95 is set along the extension path C to separate the two sides of the electrode 01 to be processed.

[0173] In another example, along the extension path C perpendicular to the electrode sheet 01 to be processed, the air knife mechanism 31 and the cleaning mechanism 33 in the recycling mechanism 3, as well as the tab forming mechanism 2 and the slitting mechanism 4, can be arranged on the second side G of the electrode sheet 01 to be processed. In this way, when manual operation is required on the air knife mechanism 31, the cleaning mechanism 33, the tab forming mechanism 2, and the slitting mechanism 4, the corresponding operation needs to be performed on the second side G.

[0174] In the above embodiments, since the unwinding mechanism 1, the winding mechanism 5, and other mechanisms in the electrode processing equipment are respectively set on both sides of the electrode to be processed 01, the loading and unloading area and the area that can be operated manually are located in two unconnected areas, which can improve the safety of operation.

[0175] In some embodiments, such as Figure 1 As shown, the unwinding mechanism 1 includes a first unwinding assembly 11, a second unwinding assembly 12, and an unwinding and changing assembly 13; wherein, the first unwinding assembly 11 and the second unwinding assembly 12 are both disposed on the extension path C of the electrode sheet 01 to be processed, and the unwinding and changing assembly 13 is disposed between the first unwinding assembly 11 and the second unwinding assembly 12. The unwinding and changing assembly 13 is used to guide the electrode sheet 01 to be processed on the first unwinding assembly 11 to move closer to the electrode sheet 01 to be processed on the second unwinding assembly 12, or to guide the electrode sheet 01 to be processed on the second unwinding assembly 12 to move closer to the electrode sheet 01 to be processed on the first unwinding assembly 11.

[0176] In this embodiment of the application, the unwinding mechanism 1 can be configured to include at least two unwinding components, which can alternately provide the electrode to be processed 01 to the electrode processing equipment.

[0177] For example, along the extension path C of the electrode to be processed 01, adjacent first unwinding assembly 11 and second unwinding assembly 12 can be provided. Both the first unwinding assembly 11 and the second unwinding assembly 12 can rotate to unwind the wound electrode to be processed 01 into a strip-shaped electrode to be processed 01.

[0178] In another example, an unwinding and changing assembly 13 can be provided between the first unwinding assembly 11 and the second unwinding assembly 12. The unwinding and changing assembly 13 can guide the electrode sheet 01 to be processed on one winding assembly to the electrode sheet 01 to be processed on another winding assembly. For example, when the electrode sheet 01 to be processed on the first unwinding assembly 11 is about to run out, the unwinding and changing assembly 13 can guide the electrode sheet 01 to be processed on the second unwinding assembly 12 to the position of the electrode sheet 01 to be processed on the first unwinding assembly 11, so that the electrode sheet 01 to be processed on the first unwinding assembly 11 can continue to drive the electrode sheet 01 to be processed on the second unwinding assembly 12 to move to the subsequent processing station.

[0179] In the above embodiments, since the unwinding mechanism 1 is provided with a first unwinding component 11 and a second unwinding component 12, and an unwinding and changing component 13 is provided between the first unwinding component 11 and the second unwinding component 12, the electrode sheet 01 to be processed on one unwinding component can be guided to the electrode sheet 01 to be processed on the other unwinding component through the unwinding and changing component 13, so that the electrode sheet 01 to be processed can be continuously provided to the electrode processing equipment. Furthermore, one of the first unwinding component 11 and the second unwinding component 12 can be used as a buffer position to hold the electrode sheet 01 to be processed.

[0180] In some embodiments, such as Figure 1 As shown, the unwinding mechanism 1 also includes a connecting component 14, which is disposed between the first unwinding component 11 and the second unwinding component 12. The connecting component 14 is used to provide a connecting member to the electrode 01 to be processed on the first unwinding component 11 or the second unwinding component 12. The connecting member is used to connect the electrode 01 to be processed on the first unwinding component 11 and the electrode 01 to be processed on the second unwinding component 12.

[0181] In this embodiment of the application, during the process of moving the electrode 01 to be processed on one unwinding assembly to another unwinding assembly to a subsequent station by pulling the electrode 01 to be processed on one unwinding assembly, it is necessary to connect the electrode 01 to be processed on the two unwinding assemblies together. Therefore, a connecting assembly 14 can be provided between the first unwinding assembly 11 and the second unwinding assembly 12, and the connecting assembly 14 is located at the front end of the unwinding and changing assembly 13.

[0182] For example, the connector can be made of double-sided adhesive. The connector assembly 14 can be configured to include a driving member and an adhesive applicator, the driving member driving the adhesive applicator to move toward the first unwinding assembly 11 or the second unwinding assembly 12. Double-sided adhesive can be applied to the electrode sheet 01 to be processed on the first unwinding assembly 11 or the second unwinding assembly 12 by the adhesive applicator. In this way, the electrode sheet 01 to be processed on the first unwinding assembly 11 and the second unwinding assembly 12 can be bonded together by double-sided adhesive.

[0183] In the above embodiments, since a connecting component 14 is provided between the first unwinding component 11 and the second unwinding component 12, a connecting member can be provided to the electrode sheet 01 to be processed on the first unwinding component 11 or the second unwinding component 12 through the connecting component 14, so that the electrode sheet 01 to be processed on the first unwinding component 11 and the second unwinding component 12 can be connected together under the guidance of the unwinding and rewinding component 13.

[0184] In some embodiments, such as Figure 1As shown, the unwinding mechanism 1 also includes an unwinding detection component 15, which is electrically connected to the first unwinding assembly 11 and the second unwinding assembly 12. The unwinding detection component 15 is used to detect the lateral displacement position of the electrode sheet 01 to be processed on the extension path C, and send a correction command to the first unwinding assembly 11 or the second unwinding assembly 12 according to the lateral displacement position. The correction command is used to control the first unwinding assembly 11 or the second unwinding assembly 12 to move in the axial direction D along the first unwinding assembly 11.

[0185] In this embodiment, the electrode sheet 01 to be processed may laterally shift relative to the preset path during its movement along the extension path C. An unwinding detection element 15 can be provided at the rear end of the unwinding and changing assembly 13, and the unwinding detection element 15 can be electrically connected to the first unwinding assembly 11 and the second unwinding assembly 12, respectively.

[0186] For example, the unwinding detection component 15 can be a device such as a through-beam photoelectric sensor. During the movement of the electrode 01 to be processed, if the electrode 01 to be processed is laterally displaced, the through-beam photoelectric sensor can generate a corresponding correction command. The correction command can control the corresponding first unwinding assembly 11 or second unwinding assembly 12 to move along the axial direction D of the first unwinding assembly 11, thereby driving the electrode 01 to be processed to move along the axial direction D of the first unwinding assembly 11, so that the electrode 01 to be processed can return to the preset path.

[0187] In the above embodiment, since an unwinding detection element 15 is provided in the unwinding mechanism 1, it can detect whether the electrode sheet 01 to be processed has lateral displacement on the extension path C. If it is determined that the electrode sheet 01 to be processed has lateral displacement, a correction command can be sent to the first unwinding assembly 11 or the second unwinding assembly 12 to control the first unwinding assembly 11 or the second unwinding assembly 12 to move in the axial direction D along the first unwinding assembly 11. This can drive the electrode sheet 01 to be processed back to the preset path, thereby reducing the risk of the electrode sheet 01 being broken by lateral tension and ensuring that the electrode sheet 01 to be processed always moves along the fixed extension path C.

[0188] In some embodiments, such as Figure 1 As shown, the electrode processing equipment also includes a connecting mechanism 6. Along the extension path C of the electrode to be processed 01, the connecting mechanism 6 is disposed between the unwinding mechanism 1 and the tab forming mechanism 2. The connecting mechanism 6 is used to connect the broken electrode to be processed 01.

[0189] In this embodiment of the application, there is a risk of tape breakage during the movement of the electrode sheet 01 to be processed along the extension path C. In order to facilitate the manual connection of the broken electrode sheet 01 to be processed, a tape connection mechanism 6 can be set between the unwinding mechanism 1 and the tab forming mechanism 2.

[0190] For example, the connecting mechanism 6 can be set on the extension path C of the electrode to be processed 01, and the connecting mechanism 6 can be set as a structure including at least two clamping members. The two clamping members can clamp the two ends of the broken electrode to be processed 01 respectively, so that the two ends of the broken electrode to be processed 01 are in a relatively fixed position, which makes it convenient for the operator to connect the broken electrode to be processed 01.

[0191] In the above embodiments, since a connecting mechanism 6 is provided between the unwinding mechanism 1 and the tab forming mechanism 2, the connecting structure facilitates the manual connection of the broken electrode sheet 01 to be processed.

[0192] In some embodiments, such as Figure 1 As shown, the electrode processing equipment also includes a second detection component 92. Along the extension path C of the electrode to be processed 01, the second detection component 92 is disposed between the unwinding mechanism 1 and the tab forming mechanism 2. The second detection component 92 is used to obtain the quality information of the electrode to be processed 01.

[0193] In this embodiment of the application, a second detection component 92 can be provided between the unwinding mechanism 1 and the tab forming mechanism 2 to detect the electrode sheet 01 to be processed, so as to determine whether the electrode sheet 01 to be processed has quality defects. The quality information of the electrode sheet 01 to be processed can be obtained through the second detection component 92, and the quality information indicates whether the electrode sheet 01 to be processed has quality defects.

[0194] For example, the second detection component 92 can be a CCD camera or the like, which can acquire images of the electrode sheet 01 to be processed, and analyze the images to determine whether there are quality defects in the electrode sheet 01. The second detection component 92 can also use other sensors to detect whether there are any quality defects on the electrode sheet 01 to be processed.

[0195] In the above embodiments, since a second detection component 92 is provided between the unwinding mechanism 1 and the tab forming mechanism 2, the quality information of the electrode sheet 01 to be processed can be obtained through the second detection component 92. If it is determined that the electrode sheet 01 to be processed has quality defects, the electrode sheet 01 to be processed with quality defects can be processed in a timely manner, thereby reducing the risk of unqualified electrode sheets entering the subsequent battery processing process.

[0196] In some embodiments, such as Figure 1 As shown, the electrode processing equipment also includes a reinforcing mechanism 7. Along the extension path C of the electrode to be processed 01, the reinforcing mechanism 7 is disposed on the side of the tab forming mechanism 2 near the unwinding mechanism 1. The reinforcing mechanism 7 is used to prepare a reinforcing part in the tab region on the electrode to be processed 01. The tab region includes the area on the electrode to be processed 01 where the tab is formed by cutting.

[0197] In this embodiment, to improve the strength of the tab formed on the electrode sheet 01 to be processed, a reinforcing mechanism 7 can be provided on the side of the tab forming mechanism 2 near the unwinding mechanism 1, so as to prepare a reinforcing part in the tab area on the electrode sheet 01 through the reinforcing mechanism 7. For example, the reinforcing part can be a protrusion perpendicular to the surface of the electrode sheet 01 to be processed.

[0198] For example, the reinforcing mechanism 7 can be configured to include two reinforcing rollers, each with matching ridges and grooves on its surface. Thus, during the rotation of the reinforcing rollers, the tab area on the electrode sheet 01 to be processed will be squeezed out with multiple ridges of consistent concavity and convexity.

[0199] In the above embodiments, since a reinforcing mechanism 7 is provided on the side of the tab forming mechanism 2 near the unwinding mechanism 1, a reinforcing part can be prepared in the tab area on the electrode sheet 01 to be processed by the reinforcing mechanism 7, thereby enabling the tab area of ​​the electrode sheet 01 to be processed after passing through the tab forming mechanism 2 to have higher strength.

[0200] In some embodiments, such as Figure 1 As shown, the electrode processing equipment also includes a third detection component 93. Along the extension path C of the electrode to be processed 01, the third detection component 93 is disposed on the side of the tab forming mechanism 2 near the unwinding mechanism 1. The third detection component 93 is used to detect the length of the electrode to be processed 01 that has passed through the third detection component 93.

[0201] In this embodiment, a third detection component 93 can be provided on the side of the tab forming mechanism 2 near the unwinding mechanism 1, and the third detection component 93 can be set on the extension path C of the electrode sheet 01 to be processed, so as to detect the length of the electrode sheet 01 to be processed through the tab forming mechanism 2 by the third detection component 93.

[0202] For example, the third detection component 93 may employ a device including an encoding roller. As the electrode 01 to be processed passes through the third detection component 93, the third detection component 93 can detect the length of the electrode 01 to be processed that has passed through.

[0203] In the above embodiment, since a third detection component 93 is provided on the side of the tab forming mechanism 2 near the unwinding mechanism 1, the length of the cut electrode sheet 02 cut by the tab forming mechanism 2 can be detected by the third detection component 93, and the length data of the cut electrode sheet 02 can be obtained in a timely manner.

[0204] Meanwhile, this application embodiment also provides a battery production line, which includes the electrode processing equipment, coating equipment, cell winding equipment and handling equipment provided in any of the above embodiments; wherein, the coating equipment is used to coat an active slurry on the current collector to form an electrode 01 to be processed; the cell winding equipment is used to wind the separator and the cut electrode 02 to form a cell; and the handling equipment is used to transport the electrode 01 to be processed to the unwinding mechanism 1.

[0205] In this embodiment, a coating device can be installed on the battery production line. The coating device can coat an active slurry onto the current collector. After the active slurry solidifies on the current collector, the electrode to be processed (01) can be obtained. Alternatively, the coating device can be used to wind the electrode to be processed (01) to form a film roll of the electrode to be processed (01). For example, the current collector can be a metal foil or a composite current collector. The active material can be lithium phosphate, lithium transition metal oxide, or their respective modified compounds.

[0206] In this embodiment, the cell winding equipment can stack and wind the separator and the cut electrode 02 to obtain a cell. The separator and the cut electrode 02 are adjacent, and the separator can separate the wound cut electrode 02.

[0207] In this embodiment, the electrode roll to be processed (01) can be transported by a transport device to the unwinding mechanism 1 of the electrode processing equipment. Alternatively, the electrode roll formed on the winding mechanism 5 can be removed by the transport device and transported to a storage location or to the next processing station.

[0208] In the above embodiments, since an electrode processing device is provided in the battery production line, the production efficiency of the electrode can be improved, and the pass rate of electrode processing can also be improved, thereby improving the efficiency and pass rate of battery processing.

[0209] In addition, embodiments of this application also provide a control method for an electrode processing equipment, the electrode processing equipment including an unwinding mechanism, an electrode tab forming mechanism, a recycling mechanism, and a slitting mechanism; see reference Figure 13 , Figure 13 A flowchart illustrating the control method of the electrode processing equipment provided in this application is shown. Figure 1 .like Figure 13 As shown, the control method of the electrode processing equipment includes the following steps S101 to S104.

[0210] S101. In response to the processing command, control the unwinding mechanism to perform the unwinding action so that the wound electrode sheet to be processed, carried on the unwinding mechanism, extends along the extension path.

[0211] In some embodiments, the processing instruction may be generated in response to a user's operation of the electrode processing equipment, in response to the electrode to be processed being placed in place on the unwinding mechanism, or in response to the removal of the electrode film roll located on the winding mechanism. This application embodiment does not limit the scenario in which the processing instruction is generated.

[0212] In some embodiments, when processing the electrode sheet to be processed begins, the unwinding mechanism needs to be controlled to perform an unwinding action. For example, the unwinding component carrying the wound electrode sheet to be processed in the unwinding mechanism can be controlled to rotate at a preset speed to drive the wound electrode sheet to be processed to rotate. This allows the wound electrode sheet to be processed to unfold into a thin, long strip shape, so that the electrode sheet to be processed can be extended along the extension path, that is, to allow the electrode sheet to be processed to move sequentially along the distribution path of each processing mechanism in the electrode processing equipment.

[0213] S102. Control the tab forming mechanism to cut the electrode sheet to be processed so that tabs are formed on the electrode sheet to be processed.

[0214] In some embodiments, after the electrode to be processed extends to the tab forming mechanism, the tab forming mechanism can be controlled to perform a cutting action according to a preset path to cut the electrode to be processed. For example, the laser cutter can be driven by the drive component in the tab forming mechanism to move according to the outline shape of the tab, so that the electrode to be processed can be cut by laser to form a tab in the tab area on the electrode to be processed.

[0215] S103. Control the recycling mechanism to collect and store the waste generated from cutting the electrode sheets to be processed.

[0216] In some embodiments, during the cutting of the electrode sheet by the tab forming mechanism, there is a possibility that the tab forming mechanism may fail to completely sever the waste material from the cut electrode sheet. In this case, the cut electrode sheet will carry the uncut waste material to the next processing station. If the adhering waste material is not separated from the cut electrode sheet in time, there is a risk that the waste material may scrape the tab, causing the tab to deform or the cut electrode sheet to break.

[0217] For example, during the cutting of the electrode sheet to be processed by the tab forming mechanism, a recycling mechanism can be simultaneously controlled to perform a recycling action, so as to promptly remove the waste material adhering to the cut electrode sheet. For instance, the recycling mechanism can be configured to blow a high-velocity airflow into the tab area of ​​the electrode sheet to be processed, so as to blow the waste material away from the cut electrode sheet through the high-speed airflow. At the same time, the waste material can be transported through a pipeline to a waste storage location in the recycling mechanism for collection and storage.

[0218] S104. Control the slitting mechanism to slit the cut electrode sheet so that the cut electrode sheet is divided into at least two slit electrode sheets.

[0219] In some embodiments, two rows of tabs can be simultaneously processed on both sides of the cut electrode sheet using a tab forming mechanism. Then, after the cut electrode sheet arrives at the slitting mechanism, the slitting mechanism can be controlled to slit the cut electrode sheet so that the cut electrode sheet is divided into two slit electrode sheets.

[0220] For example, the slitting blade in the slitting mechanism can be controlled to rotate. During the rotation of the slitting blade, the cut electrode sheet passing through the middle of the slitting blade can be cut into two slitting electrode sheets, each with an electrode tab.

[0221] The control method for electrode processing equipment provided in this application, by controlling the unwinding mechanism to perform unwinding actions in response to processing commands, enables the electrode processing equipment to accurately execute each processing action and allows the electrode to be processed, wound on the unwinding mechanism, to unwind into a strip-shaped electrode at a preset speed. Furthermore, controlling the tab forming mechanism to cut the electrode to be processed allows for the formation of tabs with accurate shape and position on the cut electrode. During the cutting process of the tab forming mechanism, controlling the recycling mechanism to collect and store waste material allows for forced separation of waste material adhering to the cut electrode, reducing the risk of tab deformation or strip breakage caused by waste material moving with the cut electrode. Simultaneously, controlling the slitting mechanism to slit the cut electrode can separate it into at least two slit electrode sheets, thereby obtaining the electrode sheets required for manufacturing battery cells. Therefore, the control method for electrode processing equipment provided in this application can improve the production efficiency of electrode processing by controlling the tab forming mechanism and the slitting mechanism to cut and slit the electrode to be processed in sequence; and can reduce the adverse effects of waste on the cut electrode by controlling the recycling mechanism to forcibly separate the adhering waste, thereby improving the pass rate of electrode processing.

[0222] Reference Figure 14 , Figure 14 A flowchart illustrating the control method of the electrode processing equipment provided in this application is shown. Figure 2 The unwinding mechanism includes a first unwinding assembly, a second unwinding assembly, an unwinding and changing assembly, and a connecting assembly. Based on... Figure 14 , Figure 14 Step S101 can be achieved through the following steps S1011 to S1012.

[0223] S1011, The control connection assembly is used to place a connector on the first electrode to be processed on one of the first unwinding assembly or the second unwinding assembly.

[0224] In some embodiments, the first electrode to be processed on one of the first unwinding assembly or the second unwinding assembly is a spare electrode to be processed. When the second electrode to be processed on the other of the first unwinding assembly or the second unwinding assembly is about to run out, it is necessary to connect the first electrode to be processed into the electrode processing equipment in a timely manner so that the electrode processing equipment can continuously process the electrode to be processed.

[0225] For example, a spare first electrode to be processed can be connected to a second electrode to be processed that is about to be used up by a connector, so that the second electrode to be processed being processed by the electrode processing equipment can bring the first electrode to be processed into the processing mechanism.

[0226] In another example, the connecting assembly can be controlled to attach a connector to the first electrode to be processed; for example, the connecting assembly can be controlled to apply double-sided adhesive to the first electrode to be processed.

[0227] S1012, Control the unwinding and rewinding assembly to guide the first electrode to be processed toward the second electrode to be processed on the other of the first unwinding assembly or the second unwinding assembly, until the first electrode to be processed is connected to the second electrode to be processed as one unit through the connector.

[0228] In some embodiments, after a connector is provided on the first electrode to be processed, the unwinding and rewinding assembly can be controlled to guide the first electrode to be processed to move toward the second electrode to be processed, until the first electrode to be processed comes into contact with the second electrode to be processed through the connector, and the first electrode to be processed and the second electrode to be processed will be connected as one piece by the double-sided adhesive used as the connector.

[0229] In the above embodiments, since the control connection component provides a connector to the first electrode to be processed on one of the first unwinding component or the second unwinding component, and controls the unwinding and rewinding component to guide the first electrode to be processed to move towards the second electrode to be processed, the spare first electrode to be processed can be connected to the second electrode to be processed that is about to be used up. Thus, the first electrode to be processed can be brought into the processing mechanism of the electrode processing equipment through the second electrode to be processed, thereby enabling the electrode processing equipment to continuously process the electrode to be processed, which is beneficial to improving the utilization efficiency of the electrode processing equipment and the processing efficiency of the electrode to be processed.

[0230] Reference Figure 15 , Figure 15 A flowchart illustrating the control method of the electrode processing equipment provided in this application is shown. Figure 3 The recovery mechanism includes an air knife mechanism and a compression assembly connected via a negative pressure pipeline. Based on... Figure 13 , Figure 13Step S103 can be achieved through the following steps S1031 and S1032.

[0231] S1031. Control the air knife mechanism to blow airflow into the tab area on the electrode sheet to be processed, so as to carry the waste into the negative pressure pipeline through the airflow.

[0232] In some embodiments, during the cutting process of the electrode sheet to be processed, the air knife mechanism can be controlled to blow high-velocity gas into the tab area on the electrode sheet to be processed, so that the high-velocity gas can be used as a power source to separate the waste material adhering to the cut electrode sheet from the cut electrode sheet.

[0233] For example, the air blowing direction of the air knife mechanism can be set towards the negative pressure pipeline, so that the waste material can be carried into the negative pressure pipeline by the airflow.

[0234] S1032. Control the compression assembly to compress the waste material in the compression assembly through the negative pressure pipeline to reduce the volume of the waste material and store the waste material with reduced volume.

[0235] In some embodiments, the outlet end of the negative pressure pipeline can be connected to the compression assembly, which can then control the compression assembly to compress the collected waste. For example, the compression assembly can be controlled to perform a compression action when the waste reaches a preset volume, or it can be controlled to perform a compression action at preset time intervals, thereby compressing the waste. The waste, after being compressed and its volume reduced, can be temporarily stored in the compression assembly.

[0236] In the above embodiments, since the air knife mechanism blows airflow towards the tab area on the electrode sheet to be processed, the airflow can be used as a power source, facilitating the separation of adhering waste from the cut electrode sheet. Simultaneously, controlling the compression component to compress the collected waste reduces its volume, making it easier to store and process it in subsequent steps.

[0237] Reference Figure 16 , Figure 16 A flowchart illustrating the control method of the electrode processing equipment provided in this application is shown. Figure 4 The electrode processing equipment also includes a winding mechanism and a drive mechanism. The control method for the electrode processing equipment further includes steps S201 to S202.

[0238] S201. Control the winding mechanism to wind the slit electrode sheets to form an electrode film roll.

[0239] In some embodiments, after all the processing steps of the electrode sheet to be processed are completed to obtain the required slit electrode sheet, the winding mechanism can be controlled to only wind the slit electrode sheet, so that the strip-shaped slit electrode sheet can be wound into an electrode film roll.

[0240] S202, control the drive mechanism to move the cut electrode sheet and / or slit electrode sheet towards the winding mechanism, wherein the winding mechanism and the drive mechanism are controlled to rotate with different torques so that the tension on the slit electrode sheet is greater than the tension on the cut electrode sheet.

[0241] In some embodiments, the drive mechanism can be controlled to move the cut or slit electrode sheets so that the electrode sheets to be processed can continuously enter the various processing mechanisms.

[0242] For example, the torque of the drive mechanism can be set to be greater than the torque of the unwinding mechanism, so that the electrode sheet to be processed and / or the cut electrode sheet and / or the slit electrode sheet located between the drive mechanism and the unwinding mechanism are subjected to a certain tension. At the same time, the torque of the winding mechanism can be set to be greater than the torque of the drive mechanism, so that the slit electrode sheet located between the winding mechanism and the drive mechanism is subjected to a greater tension than the cut electrode sheet.

[0243] In the above embodiments, by controlling the winding mechanism to wind the slit electrode sheets, the strip-shaped slit electrode sheets can be formed into electrode film rolls, facilitating the storage and transportation of the electrode film rolls. Simultaneously, controlling the winding mechanism and the drive mechanism to rotate with different torques allows the electrode film rolls to be subjected to greater tension, which helps to make the electrode film rolls wind more neatly and regularly; and it allows the cut electrode sheets and the electrode sheets to be processed to be subjected to less tension, reducing the risk of breakage of the cut electrode sheets and the electrode sheets to be processed.

[0244] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way.

Claims

1. An electrode processing device, characterized in that, include: An unwinding mechanism, which is used to carry the wound electrode sheet to be processed; A tab forming mechanism is disposed on the extension path of the electrode sheet to be processed, and is used to cut the electrode sheet to be processed; A recycling mechanism is provided on the extension path of the cut electrode sheet and located on the side of the tab forming mechanism away from the unwinding mechanism. The recycling mechanism is used to remove the waste material formed after cutting the electrode sheet to be processed. A slitting mechanism is disposed on the side of the recycling mechanism away from the tab forming mechanism along the extension path of the cut electrode sheet. The slitting mechanism is used to slit the cut electrode sheet. The slitting mechanism includes a first support base, a second support base, a first cutter shaft, a second cutter shaft, a slitting blade, and an adjustment assembly. The first support base and the second support base are connected in the radial direction along the first cutter shaft. The first cutter shaft is rotatably mounted on the first support base, and the second cutter shaft is rotatably mounted on the second support base, and the first cutter shaft and the second cutter shaft are arranged in the same direction. The first cutter shaft and the second cutter shaft are respectively provided with matching slitting blades. The adjustment assembly is disposed between the first support base and the second support base, and in the radial direction along the first cutter shaft, the adjustment assembly is used to adjust the distance between the first support base and the second support base. A winding mechanism is provided on the side of the slitting mechanism away from the recycling mechanism along the extension path of the slit electrode sheet. The winding mechanism is used to wind the slit electrode sheet. The winding mechanism includes a first winding assembly, a second winding assembly, and a winding-and-changing assembly. The first winding assembly and the second winding assembly are both located on the extension path of the slit electrode sheet. The winding-and-changing assembly is located between the first winding assembly and the second winding assembly. The winding-and-changing assembly is used to guide the slit electrode sheet to move toward the first winding assembly or the second winding assembly so as to wind the slit electrode sheet by the first winding assembly or the second winding assembly. The winding mechanism further includes a shaping component, which is disposed between the first winding component and the second winding component and is movable toward the first winding component or the second winding component. The shaping component is used to provide a shaping element on the electrode film roll to fix the end cut edge of the electrode film roll by the shaping element. The electrode film roll is formed by winding the slit electrode through the first winding component or the second winding component. The winding mechanism further includes a shaping detection component, which is electrically connected to the shaping component. The shaping detection component is used to obtain the position information of the end cut edge on the electrode film roll, and send a positioning command to the shaping component according to the position information. The positioning command is used to control the shaping component to set the shaping element.

2. The electrode processing equipment according to claim 1, characterized in that, The recycling mechanism includes an air knife mechanism, which comprises an air knife support, an air knife roller shaft, and an air knife body. The air knife roller shaft is rotatably mounted on the air knife support, and the cut electrode sheet moves along the air knife roller shaft. The air knife body is mounted on the air knife support and has a communicating air outlet and air inlet. Along the axial direction of the air knife roller shaft, the air outlet is directed from the center of the cut electrode sheet toward the electrode tab on the cut electrode sheet, and the air inlet is used to connect to an air source.

3. The electrode processing equipment according to claim 2, characterized in that, The air knife mechanism further includes a guide element, a contoured cover, and a negative pressure pipeline; wherein, the guide element is sleeved on the air knife roller shaft along the radial direction of the air knife roller shaft and is located on the side of the tab on the air knife roller shaft away from the air outlet; the contoured cover is mounted on the air knife bracket and is positioned opposite to the guide element, the contoured cover has an inlet and an outlet, the shape of the inlet is adapted to the shape of the guide element and is located on the flow path of the airflow blown out of the air outlet, and the outlet is connected to one end of the negative pressure pipeline.

4. The electrode processing equipment according to claim 3, characterized in that, The recycling mechanism also includes a compression assembly connected to the end of the negative pressure pipeline away from the conformal cover, the compression assembly being used to compress and contain the waste material.

5. The electrode processing equipment according to claim 2, characterized in that, The electrode processing equipment further includes a first detection component. Along the extension path of the cut electrode, the first detection component is disposed on the side of the air knife mechanism away from the tab forming mechanism. The first detection component is used to acquire image data of the cut electrode, and the image data includes waste area information of the cut electrode.

6. The electrode processing equipment according to claim 5, characterized in that, The electrode processing equipment further includes a first marking component. Along the extension path of the cut electrode, the first marking component is disposed on the side of the first detection component away from the air knife mechanism. The first detection component is electrically connected to the first marking component. The first detection component is also used to send a marking instruction to the first marking component according to the waste area information. The marking instruction is used to control the first marking component to mark the waste area on the cut electrode.

7. The electrode processing equipment according to claim 1, characterized in that, The adjustment assembly includes an adjustment member and a locking member; the adjustment member is slidably disposed between the first support seat and the second support seat, and the locking member is installed on the first support seat or the second support seat. The locking member abuts against the adjustment member. During the process of the locking member moving towards or away from the adjustment member relative to the first support seat, the locking member can drive the adjustment member to move relative to the first support seat, so as to adjust the distance between the first support seat and the second support seat.

8. The electrode processing equipment according to claim 1, characterized in that, The slitting mechanism further includes a slitting positioning component, which is mounted on the first support and / or the second support, and is used to limit the position of the second support relative to the first support.

9. The electrode processing equipment according to claim 1, characterized in that, The slitting mechanism further includes a measuring element, one end of which is connected to the first support base and the other end of which is connected to the second support base. The measuring element is used to measure the distance between the first support base and the second support base.

10. The electrode processing equipment according to claim 1, characterized in that, The recycling mechanism further includes a cleaning mechanism located on the side of the slitting mechanism away from the unwinding mechanism along the extension path of the slit electrode sheet. The cleaning mechanism is connected to a compression assembly and is used to remove impurities from the slit electrode sheet. The compression assembly is used to compress and contain the impurities.

11. The electrode processing equipment according to claim 1, characterized in that, The electrode processing equipment also includes multiple driving mechanisms, which are arranged on the extension path of the cut electrode. The driving mechanisms are used to drive the cut or slit electrode to move away from the tab forming mechanism.

12. The electrode processing equipment according to claim 1, characterized in that, The winding mechanism further includes a pressing component, which is provided at positions corresponding to the first winding component and the second winding component. The pressing component is used to press the electrode film roll that is pressed against the first winding component and the second winding component.

13. The electrode processing equipment according to claim 1, characterized in that, On the extension path perpendicular to the electrode sheet to be processed, the unwinding mechanism and the winding mechanism are located on the first side of the electrode sheet to be processed, and the recycling mechanism, the tab forming mechanism and the slitting mechanism are located on the second side of the electrode sheet to be processed. The first side and the second side are opposite sides of the electrode sheet to be processed.

14. The electrode processing equipment according to any one of claims 1 to 13, characterized in that, The unwinding mechanism includes a first unwinding component, a second unwinding component, and an unwinding and changing component; wherein, the first unwinding component and the second unwinding component are both disposed on the extension path of the electrode to be processed, and the unwinding and changing component is disposed between the first unwinding component and the second unwinding component, and the unwinding and changing component is used to guide the electrode to be processed on the first unwinding component to move closer to the electrode to be processed on the second unwinding component, or to guide the electrode to be processed on the second unwinding component to move closer to the electrode to be processed on the first unwinding component.

15. The electrode processing equipment according to claim 14, characterized in that, The unwinding mechanism further includes a connecting component, which is disposed between the first unwinding component and the second unwinding component. The connecting component is used to provide a connecting member to the electrode to be processed on the first unwinding component or the second unwinding component, and the connecting member is used to connect the electrode to be processed on the first unwinding component and the electrode to be processed on the second unwinding component.

16. The electrode processing equipment according to claim 14, characterized in that, The unwinding mechanism further includes an unwinding detection component, which is electrically connected to the first unwinding assembly and the second unwinding assembly respectively. The unwinding detection component is used to detect the lateral displacement position of the electrode sheet to be processed on the extension path, and sends a correction command to the first unwinding assembly or the second unwinding assembly according to the lateral displacement position. The correction command is used to control the first unwinding assembly or the second unwinding assembly to move in the axial direction along the first unwinding assembly.

17. The electrode processing equipment according to any one of claims 1 to 13, characterized in that, The electrode processing equipment further includes a connecting mechanism, which is disposed between the unwinding mechanism and the tab forming mechanism along the extension path of the electrode to be processed. The connecting mechanism is used to connect broken electrode pieces to be processed.

18. The electrode processing equipment according to any one of claims 1 to 13, characterized in that, The electrode processing equipment further includes a second detection component, which is disposed between the unwinding mechanism and the tab forming mechanism along the extension path of the electrode to be processed. The second detection component is used to obtain the quality information of the electrode to be processed.

19. The electrode processing equipment according to any one of claims 1 to 13, characterized in that, The electrode processing equipment further includes a reinforcing mechanism. Along the extension path of the electrode to be processed, the reinforcing mechanism is disposed on the side of the tab forming mechanism near the unwinding mechanism. The reinforcing mechanism is used to prepare a reinforcing portion in the tab region on the electrode to be processed. The tab region includes the area on the electrode to be processed where the tab is formed by cutting.

20. The electrode processing equipment according to any one of claims 1 to 13, characterized in that, The electrode processing equipment further includes a third detection component. Along the extension path of the electrode to be processed, the third detection component is disposed on the side of the tab forming mechanism near the unwinding mechanism. The third detection component is used to detect the length of the electrode to be processed after passing through the third detection component.

21. A battery production line, characterized in that, include: The electrode processing equipment according to any one of claims 1 to 20; A coating apparatus for coating an active slurry onto a current collector to form the electrode to be processed; A battery cell winding device, wherein the battery cell winding device is used to wind insulators and cut electrode sheets to form a battery cell; A transport device is used to transport the electrode sheet to be processed onto the unwinding mechanism.

22. A control method for an electrode processing apparatus, implemented using the electrode processing apparatus according to any one of claims 1 to 20, characterized in that, The control method for the electrode processing equipment includes: The adjustment component is controlled to move relative to the first support and / or the second support, so that the adjustment component drives the first support and the second support to move in the radial direction along the first cutter axis; In response to a processing command, the unwinding mechanism is controlled to perform an unwinding action, so that the wound electrode sheet to be processed, carried on the unwinding mechanism, extends along the extension path. The electrode forming mechanism is controlled to cut the electrode sheet to be processed so that electrode tabs are formed on the electrode sheet to be processed; The recycling mechanism is controlled to collect and store the waste generated during the cutting of the electrode sheets to be processed; The slitting mechanism is controlled to slit the cut electrode sheet so that the cut electrode sheet is divided into at least two slit electrode sheets; The first winding assembly or the second winding assembly is controlled to wind the slit electrode sheet. When an electrode film roll is formed on the first winding assembly or the second winding assembly, the shaping detection assembly is controlled to obtain the position information of the end cut edge of the electrode film roll. Based on the position information, a positioning command is sent to the shaping assembly, and the shaping assembly sets a shaping element on the end cut edge according to the positioning command.

23. The control method for the electrode processing equipment according to claim 22, characterized in that, The unwinding mechanism includes a first unwinding assembly, a second unwinding assembly, an unwinding and changing assembly, and a connecting assembly; controlling the unwinding mechanism to perform an unwinding action so that the wound electrode sheet to be processed, carried on the unwinding mechanism, can be extended along the extension path includes: The control connection assembly provides a connector to the first electrode sheet to be processed on one of the first unwinding assembly or the second unwinding assembly; The unwinding and rewinding assembly guides the first electrode to be processed toward the second electrode to be processed on either the first unwinding assembly or the second unwinding assembly, until the first electrode to be processed is connected to the second electrode to be processed as a single unit through the connector.

24. The control method for the electrode processing equipment according to claim 22, characterized in that, The recycling mechanism includes an air knife mechanism and a compression assembly connected via a negative pressure pipeline; controlling the recycling mechanism to collect and store the waste generated from cutting the electrode sheet to be processed includes: The air knife mechanism is controlled to blow airflow toward the tab area on the electrode sheet to be processed, so as to carry the waste into the negative pressure pipeline through the airflow; The compression assembly is controlled to compress the waste material passing through the negative pressure pipeline, thereby reducing the volume of the waste material and storing the waste material with reduced volume.

25. The control method for the electrode processing equipment according to any one of claims 22 to 24, characterized in that, The electrode processing equipment further includes a drive mechanism; the control method of the electrode processing equipment includes: The drive mechanism is controlled to move the cut electrode sheet and / or slit electrode sheet toward the winding mechanism, wherein the winding mechanism and the drive mechanism are controlled to rotate with different torques so that the tension on the slit electrode sheet is greater than the tension on the cut electrode sheet.

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