Electrode sheet processing device, battery production line, and control method for electrode sheet processing device

Abstract

An electrode sheet processing device, a battery production line, and a control method for an electrode sheet processing device, relating to the technical field of battery production. The electrode sheet processing device can improve the production efficiency, and can also increase the electrode sheet processing pass rate. The electrode sheet processing device comprises: an unwinding mechanism, a tab forming mechanism, a recycling mechanism, and a slitting mechanism; the unwinding mechanism is configured to bear a wound electrode sheet to be processed; the tab forming mechanism is arranged on an extension path of the electrode sheet to be processed and configured to cut the electrode sheet to be processed; the recycling mechanism is arranged on an extension path of a cut electrode sheet and located on the side of the tab forming mechanism distant from the unwinding mechanism; the recycling mechanism is configured to clean waste formed after the electrode sheet to be processed is cut; along the extension path of the cut electrode sheet, the slitting mechanism is arranged on the side of the recycling mechanism distant from the tab forming mechanism, and the slitting mechanism is configured to slit the cut electrode sheet.

Description

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

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on the Chinese patent application with application number 202410067677.0, application date January 17, 2024, and invention name “Pole piece processing equipment, battery production line and control method of pole piece processing equipment”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the present disclosure as a reference. Technical Field

[0003] The present disclosure relates to the technical field of battery production, and in particular to a pole piece processing device, a battery production line, and a control method for the pole piece processing device. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] 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 secondary battery pole pieces. Their production efficiency and the yield rate of processed products have a significant impact on the cost of the final secondary battery. In the relevant technology, the equipment investment for die-cutting and slitting is large and the equipment occupies a large area. There is a need for pole piece processing equipment with a more rational layout, a smaller footprint, higher production efficiency, and improved product yield.

[0006] Summary of the Invention

[0007] The present disclosure provides a pole piece processing device, a battery production line, and a control method for the pole piece processing device, which can improve production efficiency and the pass rate of pole piece processing.

[0008] The first aspect of the present disclosure provides a pole piece processing equipment, which includes: an unwinding mechanism, a pole tab forming mechanism, a recycling mechanism and a slitting mechanism; wherein the unwinding mechanism is used to carry the wound pole piece to be processed; the pole tab forming mechanism is arranged on the extension path of the pole piece to be processed, and is used to cut the pole piece to be processed; the recycling mechanism is arranged on the extension path of the cut pole piece, and is located on the side of the pole tab forming mechanism away from the unwinding mechanism, and the recycling mechanism is used to remove the waste formed after cutting the pole piece to be processed; along the extension path of the cut pole piece, the slitting mechanism is arranged on the side of the recycling mechanism away from the pole tab forming mechanism, and the slitting mechanism is used to slitting the cut pole piece.

[0009] The electrode processing equipment provided by the present disclosure is provided with an unwinding mechanism, which can carry the electrode to be processed that is wound into a film roll through the unwinding mechanism, and can also unfold the electrode to be processed that is wound into a film roll into a strip-shaped electrode to be processed through the unwinding mechanism. In addition, a pole ear forming mechanism is provided along the extension path of the electrode to be processed, and the pole ear forming mechanism can be used to cut the electrode to be processed to form a pole ear on the electrode to be processed. In addition, a recycling mechanism is provided on the extension path of the cut electrode, and the recycling mechanism can be used to forcibly separate the waste adhering to the cut electrode to reduce the risk of the waste moving with the cut electrode, causing the pole ear to be deformed, or causing the cut electrode to be broken. At the same time, a slitting mechanism is also provided on the extension path of the cut electrode, and the slitting mechanism can be used to slit the cut electrode to separate the cut electrode into at least two slit electrode sheets.

[0010] Compared to related technologies, the present invention sequentially arranges a tab forming mechanism and a slitting mechanism along the extension path of the electrode to be processed, which can cut and slit the electrode to be processed in sequence. This allows the electrode to be processed to be continuously cut and slit in one device, thereby improving the production efficiency of electrode processing and reducing the space occupied by the electrode processing equipment. At the same time, a recycling mechanism is provided between the tab forming mechanism and the slitting mechanism. The recycling mechanism forcibly separates the adhering waste to reduce the adverse effects of the waste on the cut electrode, thereby improving the qualified rate of electrode processing.

[0011] In a possible implementation of the present disclosure, the recovery mechanism includes a wind knife mechanism, which includes a wind knife bracket, a wind knife roller and a wind knife body; wherein the wind knife roller is rotatably mounted on the wind knife bracket, and the cut pole piece moves on the wind knife roller; the wind knife body is mounted on the wind knife bracket, and the wind knife body has a connected air outlet and air inlet, and in the axial direction along the wind knife roller, the air outlet is from the center of the cut pole piece toward the pole ear on the cut pole piece, and the air inlet is used to connect to the air source.

[0012] Because the wind knife support is rotatably mounted with a wind knife roller, the wind knife roller supports the cut electrode piece as it passes through the wind knife mechanism, allowing the cut electrode piece to stably move around the wind knife roller along a fixed path to the next workstation. At the same time, the wind knife support is equipped with a wind knife body that can be connected to a high-pressure air source. The air outlet of the wind knife body is directed from the center of the cut electrode piece toward the electrode tab of the cut electrode piece. This allows the airflow to blow waste material attached to the electrode tab away from the electrode tab, separating the waste material from the electrode tab and reducing the impact of waste material that has not been separated from the electrode tab on the electrode tab.

[0013] In a possible implementation of the present disclosure, the wind knife mechanism also includes a flow guide, a contoured cover and a negative pressure pipeline; wherein, the flow guide is arranged on the wind knife roller along the radial direction of the wind knife roller, and is located on the side of the pole ear on the wind knife roller away from the air outlet; the contoured cover is installed on the wind knife bracket and is opposite to the flow guide, the contoured cover has an intake port and an exhaust port, the shape of the intake port is adapted to the shape of the flow guide, and is located on the flow path of the airflow blown out of the air outlet, and the exhaust port is connected to one end of the negative pressure pipeline.

[0014] A guide member is provided on the air blade roller of the air blade mechanism to guide the movement of waste material blown away from the tab by the airflow. A contoured hood is provided adjacent to the guide member to allow waste material passing through the guide member to enter the contoured hood for collection. Furthermore, a negative pressure line is connected to the discharge port of the contoured hood, creating a negative pressure at the suction port of the contoured hood, facilitating the entry of waste material into the contoured hood. The negative pressure line can then transport the waste material into the contoured hood to a storage location.

[0015] In a possible implementation of the present disclosure, the recycling mechanism further includes a compression assembly connected to an end of the negative pressure pipeline away from the contoured cover, and the compression assembly is used to compress and accommodate waste materials.

[0016] Since a compression component is provided in the recycling mechanism and the compression component is connected to the negative pressure pipeline of the air knife mechanism, the 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 conducive to the storage of the waste and can increase the capacity of the compression component for the waste.

[0017] In a possible implementation of the present disclosure, the pole piece processing equipment also includes a first detection component. Along the extension path of the cut pole piece, the first detection component is arranged on the side of the air knife mechanism away from the pole ear forming mechanism, and the first detection component is used to obtain image data of the cut pole piece.

[0018] Since a first detection component is also provided along the extension path of the cut electrode, the image data of the cut electrode cleaned by the air knife mechanism can be obtained through the first detection component, so that whether the processing quality of the cut electrode is qualified can be judged based on the obtained image data.

[0019] In a possible implementation of the present disclosure, the electrode processing equipment also includes a first marking component. On the extension path along the cut electrode, the first marking component is arranged on a 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 scrap area information. The marking instruction is used to control the first marking component to mark the scrap area on the cut electrode.

[0020] Since a first marking component electrically connected to the first detection component is provided in the electrode processing equipment, the first marking component can be used to mark the waste area on the cut electrode, thereby facilitating the processing of the cut electrode containing the waste area in subsequent processing steps, thereby reducing the risk of unqualified cut electrode sheets being used to manufacture battery cells.

[0021] In a possible implementation of the present disclosure, the slitting mechanism includes a first support seat, a second support seat, a first knife shaft, a second knife shaft, a slitting knife and an adjustment assembly; wherein, the first support seat and the second support seat are connected in a radial direction along the first knife shaft; the first knife shaft is rotatably set on the first support seat, and the second knife shaft is rotatably set on the second support seat, and the first knife shaft and the second knife shaft are set in the same direction; the first knife shaft and the second knife shaft are respectively provided with corresponding slitting knives; the adjustment assembly is arranged between the first support seat and the second support seat, and in the radial direction along the first knife shaft, the adjustment assembly is used to adjust the distance between the first support seat and the second support seat.

[0022] Because the slitting mechanism is provided with a first support seat and a second support seat, the first and second blade shafts can be mounted on the first and second support seats, respectively, facilitating installation of the two blade shafts. Furthermore, an adjustment assembly is provided between the first and second support seats, which allows adjustment of the distance between the first and second support seats, thereby adjusting the distance between the first and second blade shafts. This allows slitting knives of different diameters to be mounted on the first and second blade shafts, and the adjustment assembly can be used to adjust the two slitting knives so that they are aligned relative to each other, thereby improving the applicability of the slitting mechanism.

[0023] In a possible implementation of the present disclosure, the adjustment assembly includes an adjustment member and a locking member; the adjustment member is slidably arranged between the first support seat and the second support seat, the locking member is installed on the first support seat or the second support seat, and the locking member abuts against the adjustment member. In the process of the locking member moving relative to the first support seat toward or away from the adjustment member, the locking member can drive the adjustment member to move relative to the first support seat to adjust the distance between the first support seat and the second support seat.

[0024] Since the adjusting member is slidably disposed between the first support base and the second support base, the adjusting member can be moved relative to the first support base to change the distance between the first support base and the second support base. At the same time, the locking member is installed on the first support base or the second support base, and the adjusting member can be driven by the locking member to move so as to facilitate the adjustment member to move relative to the first support base. After the distance between the first support base and the second support base is adjusted, the adjusting member can be fixed relative to the first support base by the locking member so as to prevent free movement, thereby maintaining a constant distance between the first support base and the second support base.

[0025] In a possible implementation of the present disclosure, the slitting mechanism further includes a slitting positioning assembly, which is mounted on the first support seat and / or the second support seat, and is used to limit the position of the second support seat relative to the first support seat.

[0026] Since a slitting positioning assembly is installed on the first support seat and / or the second support seat, the slitting positioning assembly can be used to limit the position of the second support seat relative to the first support seat, such as limiting the position of the second support seat relative to the first support seat in the axial direction along the first knife axis, thereby improving the installation accuracy of the first support seat and the second support seat, and reducing the risk of unnecessary movement of the second support seat relative to the first support seat, thereby improving the installation accuracy of the slitting knife.

[0027] In a possible implementation of the present disclosure, the slitting mechanism further includes a measuring piece, one end of the measuring piece is connected to the first support seat, and the other end is connected to the second support seat, and the measuring piece is used to measure the distance between the first support seat and the second support seat.

[0028] Since a measuring piece is provided between the first support seat and the second support seat, during the process of adjusting the distance between the first support seat and the second support seat, the distance value between the first support seat and the second support seat can be fed back in real time through the measuring piece, thereby facilitating quick and accurate adjustment of the spacing between the first support seat and the second support seat.

[0029] In a possible implementation of the present disclosure, the recycling mechanism also includes a cleaning mechanism. Along the extension path of the slit pole pieces, the cleaning mechanism is arranged on the side of the slit mechanism away from the unwinding mechanism. The cleaning mechanism is connected to the compression assembly. The cleaning mechanism is used to clean impurities on the slit pole pieces, and the compression assembly is used to compress and accommodate impurities.

[0030] Since a cleaning mechanism is provided at the rear end of the slitting mechanism along the extension path of the cut electrode sheets, impurities adhering to the cut electrode sheets can be removed by the cleaning mechanism to keep the cut electrode sheets clean, thereby improving the quality of the battery cells manufactured by sampling the cut electrode sheets.

[0031] In a possible implementation of the present disclosure, the pole piece processing equipment further includes a plurality of driving mechanisms, which are arranged on the extension path of the cut pole pieces, and the driving mechanisms are used to drive the cut pole pieces or the split pole pieces to move in a direction away from the pole ear forming mechanism.

[0032] Since multiple driving mechanisms are arranged along the extension path of the cut pole piece, on the one hand, the driving mechanism can drive the cut pole piece or the split pole piece to move, so that the cut pole piece or the split pole piece can reach the position of the next processing mechanism; on the other hand, the driving force of the two adjacent driving mechanisms can be controlled to control the tension of the cut pole piece or the split pole piece located between the two adjacent driving mechanisms, thereby improving the stability of the movement path of the continuous pole pieces to be processed, the cut pole pieces and the split pole pieces.

[0033] In a possible implementation of the present disclosure, the electrode processing equipment further includes a winding mechanism, which is arranged on a side of the slitting mechanism away from the recycling mechanism along the extension path of the slit electrode, and is used to wind the slit electrode.

[0034] Since a winding mechanism is provided on the extension path of the slit electrodes, the slit electrodes can be automatically wound and collected by the winding mechanism so that the slit electrodes are formed into electrode film rolls, thereby facilitating the storage and use of the electrodes to be processed that have completed various processing processes.

[0035] In a possible implementation of the present disclosure, the winding mechanism includes a first winding assembly, a second winding assembly and a winding and changing assembly; wherein the first winding assembly and the second winding assembly are both arranged on the extension path of the slit pole piece, the winding and changing assembly is arranged between the first winding assembly and the second winding assembly, and the winding and changing assembly is used to guide the slit pole piece to move toward the first winding assembly or the second winding assembly so as to wind the slit pole piece through the first winding assembly or the second winding assembly.

[0036] Since a first winding assembly and a second winding assembly are provided in the winding mechanism, and a winding and reel-changing assembly is provided between the first winding assembly and the second winding assembly, the slit electrodes can be guided to the first winding assembly or the second winding assembly through the winding and reel-changing assembly, so that the slit electrodes can be continuously wound without stopping the processing equipment to replace the electrode film roll after a winding assembly completes the winding of an electrode film roll, thereby improving the processing efficiency of the electrode to be processed.

[0037] In a possible implementation of the present disclosure, the winding mechanism also includes a shaping component, which is arranged between the first winding component and the second winding component. The shaping component is used to set a shaping piece on the electrode film roll to fix the end cut edge of the electrode film roll through the shaping piece. The electrode film roll is formed by winding the cut electrode through the first winding component or the second winding component.

[0038] Since a shaping assembly is provided between the first winding assembly and the second winding assembly, a shaping piece can be provided on the completed electrode film roll through the shaping assembly to fix the end cut edge of the electrode film roll through the shaping piece, thereby reducing the risk of the electrode film roll becoming loose or spreading.

[0039] In a possible implementation of the present disclosure, the winding mechanism also 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 cutting edge on the electrode film roll and send a positioning instruction to the shaping component based on the position information. The positioning instruction is used to control the shaping component to set the shaping part.

[0040] Since a shaping detection component electrically connected to the shaping component is provided in the winding mechanism, the position information of the end cutting edge on the electrode film roll can be obtained through the shaping detection component, so that a positioning instruction can be sent to the shaping component based on the position information, and the shaping component can be controlled to move to a position aligned with the end cutting edge, and then the shaping piece can be set on the end cutting edge, thereby improving the accuracy of the position of the shaping piece on the electrode film roll.

[0041] In a possible implementation of the present disclosure, the winding mechanism also includes a pressing assembly, which is provided at positions corresponding to the first winding assembly and the second winding assembly respectively, and the pressing assembly is used to press the electrode film roll against the first winding assembly and the second winding assembly.

[0042] Since each winding assembly is provided with a pressing assembly, during the process of winding the cut electrode sheet by the first winding assembly or the second winding assembly, the pressing assembly can be pressed tightly against the electrode sheet film roll, thereby improving the flatness of the winding of the cut electrode sheet.

[0043] In a possible implementation of the present disclosure, on an extension path perpendicular to the electrode to be processed, the unwinding mechanism and the rewinding mechanism are located on the first side of the electrode to be processed, and the recovery mechanism, the ear forming mechanism and the slitting mechanism are located on the second side of the electrode to be processed, and the first side and the second side are opposite sides of the electrode to be processed.

[0044] Since the unwinding mechanism, the winding mechanism and other mechanisms in the electrode processing equipment are respectively arranged on both sides of the electrode to be processed, the loading and unloading areas and the area where manual operation can be performed can be located in two unconnected areas, which can improve the safety of operation.

[0045] In a possible implementation of the present disclosure, the unwinding mechanism includes a first unwinding assembly, a second unwinding assembly and an unwinding and reel-changing assembly; wherein, the first unwinding assembly and the second unwinding assembly are both arranged on the extension path of the electrode to be processed, the unwinding and reel-changing assembly is arranged between the first unwinding assembly and the second unwinding assembly, and the unwinding and reel-changing assembly is used to guide the electrode to be processed on the first unwinding assembly to move toward the electrode to be processed on the second unwinding assembly, or to guide the electrode to be processed on the second unwinding assembly to move toward the electrode to be processed on the first unwinding assembly.

[0046] Since the unwinding mechanism is provided with a first unwinding assembly and a second unwinding assembly, and an unwinding and reel-changing assembly is provided between the first unwinding assembly and the second unwinding assembly, the electrode to be processed on one unwinding assembly can be guided to the electrode to be processed on the other unwinding assembly through the unwinding and reel-changing assembly, so that the electrode to be processed can be continuously provided to the electrode processing equipment. In addition, one of the first unwinding assembly and the second unwinding assembly can be used as a cache position to place the electrode to be processed.

[0047] In a possible implementation of the present disclosure, the unwinding mechanism also includes a connecting component, which is arranged between the first unwinding component and the second unwinding component, and the connecting component is used to set a connecting piece to the electrode to be processed on the first unwinding component or the second unwinding component, and the connecting piece 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.

[0048] Since a connecting component is provided between the first unwinding component and the second unwinding component, a connecting piece can be provided to the electrode to be processed on the first unwinding component or the second unwinding component through the connecting component, so that under the guidance of the unwinding and rewinding component, the electrode to be processed on the first unwinding component and the second unwinding component can be connected together.

[0049] In a possible implementation of the present disclosure, the unwinding mechanism also includes an unwinding detection member, which is electrically connected to the first unwinding assembly and the second unwinding assembly respectively. The unwinding detection member is used to detect the lateral displacement position of the electrode to be processed on the extension path, and send a correction instruction to the first unwinding assembly or the second unwinding assembly according to the lateral displacement position. The correction instruction is used to control the first unwinding assembly or the second unwinding assembly to move in the axial direction along the first unwinding assembly.

[0050] Since an unwinding detection member is provided in the unwinding mechanism, it is possible to detect whether the electrode to be processed has shifted sideways on the extension path by the unwinding detection member. In the case of determining that the electrode to be processed has shifted sideways, a correction instruction can be sent to the first unwinding assembly or the second unwinding assembly to control the first unwinding assembly or the second unwinding assembly to move in the axial direction along the first unwinding assembly, thereby driving the electrode to be processed to return to the preset path, thereby reducing the risk of the electrode to be processed being broken by lateral tension, and allowing the electrode to be processed to always move along a fixed extension path.

[0051] In a possible implementation of the present disclosure, the pole piece processing equipment further includes a tape splicing mechanism, which is arranged between the unwinding mechanism and the tab forming mechanism along the extension path of the pole piece to be processed, and is used to connect the broken pole piece to be processed.

[0052] Since a tape connection mechanism is provided between the unwinding mechanism and the tab forming mechanism, the broken pole pieces to be processed can be connected manually via the tape connection structure.

[0053] In a possible implementation of the present disclosure, the pole piece processing equipment also includes a second detection component. Along the extension path of the pole piece to be processed, the second detection component is arranged between the unwinding mechanism and the pole ear forming mechanism, and the second detection component is used to obtain quality information of the pole piece to be processed.

[0054] Since a second detection component is provided between the unwinding mechanism and the tab forming mechanism, the quality information of the electrode to be processed can be obtained through the second detection component. When it is determined that the electrode to be processed has quality defects, the electrode to be processed with quality defects can be processed in time, thereby reducing the risk of unqualified electrodes entering the subsequent battery processing steps.

[0055] In a possible implementation of the present disclosure, the pole piece processing equipment also includes a reinforcing mechanism. Along the extension path of the pole piece to be processed, the reinforcing mechanism is arranged on the side of the pole tab forming mechanism close to the unwinding mechanism. The reinforcing mechanism is used to prepare a reinforcement part in the pole tab area on the pole piece to be processed. The pole tab area includes the area on the pole piece to be processed where the pole tab is formed by cutting.

[0056] Since a reinforcement mechanism is provided on the side of the tab forming mechanism close to the unwinding mechanism, a reinforcement portion can be prepared in the tab area on the pole piece to be processed by the reinforcement mechanism, so that the tab area of ​​the pole piece to be processed after passing through the tab forming mechanism has higher strength.

[0057] In a possible implementation of the present disclosure, the pole piece processing equipment also includes a third detection component. Along the extension path of the pole piece to be processed, the third detection component is arranged on the side of the pole ear forming mechanism close to the unwinding mechanism, and the third detection component is used to detect the length of the pole piece to be processed passing through the third detection component.

[0058] Since a third detection component is provided on the side of the tab forming mechanism close to the unwinding mechanism, the length of the cut pole piece cut by the tab forming mechanism can be detected by the third detection component, and the length data of the cut pole piece can be obtained in time.

[0059] The second aspect of the present disclosure provides a battery production line, which includes: electrode processing equipment, coating equipment, battery cell winding equipment and handling equipment provided by any one of the above items; wherein the coating equipment is used to coat the active slurry on the current collector to form the electrode to be processed; the battery cell winding equipment is used to wind the isolation piece and the cut electrode to form a battery cell; and the handling equipment is used to transport the electrode to be processed to the unwinding mechanism.

[0060] Since the electrode mechanism equipment is provided in the battery production line, the production efficiency of the electrode can be improved, and the qualified rate of the electrode processing can also be improved, thereby improving the efficiency and qualified rate of battery processing.

[0061] The third aspect of the present disclosure provides a control method for a pole piece processing equipment, which includes a unwinding mechanism, a pole tab forming mechanism, a recycling mechanism and a slitting mechanism; the control method for the pole piece processing equipment includes: in response to a processing instruction, controlling the unwinding mechanism to perform an unwinding action so that the wound pole piece to be processed carried on the unwinding mechanism is extended along an extension path; controlling the pole tab forming mechanism to cut the pole piece to be processed so that a pole tab is formed on the pole piece to be processed; controlling the recycling mechanism to collect and store waste formed by cutting the pole piece to be processed; controlling the slitting mechanism to slit the cut pole piece so that the cut pole piece is slit into at least two slit pole pieces.

[0062] Since the unwinding mechanism is controlled to perform the unwinding action in response to the processing instruction, the electrode processing equipment can accurately perform each processing action and can unfold the electrode to be processed wound on the unwinding mechanism into a strip of electrode to be processed at a preset speed. In addition, the tab forming mechanism is controlled to cut the electrode to be processed, so that tabs with accurate shape and position can be formed on the cut electrode. Moreover, during the process of the tab forming mechanism cutting the electrode to be processed, the recycling mechanism is controlled to collect and store the waste, and the waste adhering to the cut electrode can be forcibly separated by the recycling mechanism to reduce the risk of the waste moving with the cut electrode, causing the tab to deform, or causing the cut electrode to break. At the same time, the slitting mechanism is controlled to slit the cut electrode, so that the cut electrode can be slit into at least two slit electrode sheets, thereby obtaining the electrode sheets required for manufacturing the battery cell. Therefore, the control method of the electrode processing equipment provided in the present invention can improve the production efficiency of electrode processing by controlling the electrode tab forming mechanism and the slitting mechanism to cut and slit the electrode to be processed in sequence; by controlling the recycling mechanism to forcibly separate the adhering waste materials, the adverse effects of the waste materials on the cut electrode sheets can be reduced, thereby improving the qualification rate of electrode processing.

[0063] In a possible implementation of the present disclosure, the unwinding mechanism includes a first unwinding assembly, a second unwinding assembly, an unwinding and reel-changing assembly, and a connecting assembly; the unwinding mechanism is controlled to perform an unwinding action so that the wound electrode to be processed carried on the unwinding mechanism can be extended along an extension path, including: controlling the connecting assembly to set a connecting piece on the first electrode to be processed on one of the first unwinding assembly or the second unwinding assembly; controlling the unwinding and reel-changing assembly to guide the first electrode to be processed to move toward the direction of 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 a whole through the connecting piece.

[0064] Since the control connection component is used to set a connecting piece on the first electrode to be processed on one of the first unwinding component or the second unwinding component, and the unwinding and reel-changing component is controlled to guide the first electrode to be processed to move in the direction close to the second electrode to be processed, the spare first electrode to be processed and the second electrode to be processed that is about to be used up can be connected as one, so that 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, and then the electrode processing equipment can continue to 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.

[0065] In a possible implementation of the present disclosure, the recovery mechanism includes an air knife mechanism and a compression assembly connected by a negative pressure pipeline; the recovery mechanism is controlled to collect and store waste generated by cutting the electrode to be processed, including: controlling the air knife mechanism to blow air flow toward the ear area on the electrode to be processed, so as to bring the waste into the negative pressure pipeline through the air flow; controlling the compression assembly to compress the waste in the compression assembly passing through the negative pressure pipeline to reduce the volume of the waste, and storing the waste after the volume is reduced.

[0066] By controlling the air knife mechanism to blow air toward the tab area of ​​the electrode to be processed, the airflow can be used as a power source to facilitate the separation of adhering waste from the cut electrode. 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 perform subsequent processing.

[0067] In a possible implementation of the present disclosure, the electrode processing equipment also 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 a electrode film roll; controlling the driving mechanism to drive the cut electrode and / or the slit electrode to move in a direction close to the winding mechanism, wherein the winding mechanism and the driving mechanism are controlled to rotate with different torques so that the tension exerted on the slit electrode is greater than the tension exerted on the cut electrode.

[0068] By controlling the winding mechanism to wind the slit electrode sheets, the strip-shaped slit electrode sheets can be formed into electrode sheet film rolls, which facilitates the storage and transportation of the electrode sheet film rolls. At the same time, controlling the winding mechanism and the drive mechanism to rotate at different torques can subject the electrode sheet film rolls to greater tension, which is conducive to making the electrode sheet film rolls more neat and regular; and can also subject the cut electrode sheets and the electrode sheets to be processed to less tension, which can reduce the risk of the cut electrode sheets and the electrode sheets to be processed breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present disclosure. The same reference numerals are used throughout the drawings to denote the same components. In the drawings:

[0070] FIG1 is a schematic diagram of the structure of a pole piece processing device provided by the present disclosure;

[0071] FIG2 is a second schematic diagram of the composition structure of the electrode processing equipment provided by the present disclosure;

[0072] FIG3 is a structural schematic diagram 1 of the air knife mechanism provided by the present disclosure;

[0073] FIG4 is a second structural diagram of the air knife mechanism provided by the present disclosure;

[0074] FIG5 is a third structural diagram of the air knife mechanism provided by the present disclosure;

[0075] FIG6 is a structural schematic diagram 1 of the slitting mechanism provided by the present disclosure;

[0076] FIG7 is a schematic cross-sectional view along the AA direction in FIG6 provided by the present disclosure;

[0077] FIG8 is a schematic cross-sectional view along the BB direction in FIG6 provided by the present disclosure;

[0078] FIG9 is a second structural diagram of the slitting mechanism provided by the present disclosure;

[0079] FIG10 is a first structural diagram of a pole piece film roll provided by the present disclosure;

[0080] FIG11 is a second structural diagram of the electrode film roll provided by the present disclosure;

[0081] FIG12 is a schematic structural diagram of a shaping member provided by the present disclosure;

[0082] FIG13 is a flow chart of a control method for a pole piece processing device provided by the present disclosure;

[0083] FIG14 is a second flow chart of a control method for a pole piece processing device provided by the present disclosure;

[0084] FIG15 is a third flow chart of the control method of the electrode processing equipment provided by the present disclosure;

[0085] FIG16 is a fourth flow chart of the control method of the electrode processing equipment provided by the present disclosure.

[0086] Description of reference numerals:

[0087] 1-unwinding mechanism; 11-first unwinding assembly; 12-second unwinding assembly; 13-unwinding and rewinding assembly; 14-connecting assembly; 15-unwinding detection element; 2-ear forming mechanism; 3-recovery mechanism; 31-air knife mechanism; 311-air knife bracket; 312-air knife roller; 313-air knife body; 314-flow guide; 315-profile cover; 316-negative pressure pipeline; 32-compression mechanism; 33-clearing mechanism; 331-dust removal assembly; 332-adsorption assembly; 4-slitting mechanism; 41-first support seat; 42-second support seat; 43-first knife shaft; 44-second knife shaft; 45-slitting knife; 46-adjustment assembly; 461-adjustment member; 462-locking member; 463-adjustment fixing seat; 47 - slitting and positioning assembly; 48 - measuring piece; 49 - slitting base; 40 - shaft sleeve; 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 - isolating piece; 01 - pole piece to be processed; 02 - pole piece that has been cut; 03 - pole piece that has been slit; 04 - pole piece film roll; 05 - shaping piece; C - extension path; D - axial direction; E - radial direction; F - first side; G - second side. DETAILED DESCRIPTION

[0088] The following embodiments of the technical solution of the present disclosure are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present disclosure and are therefore only examples and are not intended to limit the scope of protection of the present disclosure.

[0089] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "including" and "having" and any variations thereof in the specification of the present disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions.

[0090] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0091] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0092] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0093] In the description of the embodiments of the present disclosure, the orientations or positional relationships indicated by technical terms such as "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present disclosure 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 understood as limiting the embodiments of the present disclosure.

[0094] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0095] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0096] Hereinafter, the present disclosure will be described in detail.

[0097] Currently, secondary batteries are increasingly being used in everyday life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric cars, as well as in a variety of fields such as aerospace. As the application of power batteries continues to expand, market demand is also growing.

[0098] In the embodiments of the present application, the battery may include one or more battery cells, which are connected in series, parallel, or in parallel via a busbar. The battery cells (hereinafter also referred to as "battery cells") may be secondary batteries, which are batteries that can be recharged to activate the active materials after discharge and continue to be used.

[0099] The battery cells can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, etc., which are not limited in the embodiments of the present application.

[0100] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator, which is positioned between the positive and negative electrodes. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are intercalated and released between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0101] The electrode assembly may be a wound structure, a laminated structure, or a mixed structure of wound and laminated structures.

[0102] In some embodiments, the electrode assembly is a wound structure, wherein the positive electrode sheet and the negative electrode sheet are wound into the wound structure.

[0103] In some embodiments, the electrode assembly is provided with tabs that can conduct current from the electrode assembly. The tabs include a positive tab and a negative tab.

[0104] In the process of producing secondary batteries, the pole pieces used to manufacture battery cells need to be processed through multiple processes including die-cutting and slitting. In the related art, the equipment for die-cutting and slitting for processing pole pieces is set as independent equipment, and the die-cutting and slitting processes are carried out independently. Although this facilitates the design of equipment such as die-cutting and slitting. However, multiple equipment will increase investment costs on the one hand, and on the other hand, it will take up more production space, which will also increase production costs. In addition, the transportation of semi-finished products to be processed between multiple equipment will also reduce the production efficiency of the battery. There is a need for a pole piece processing equipment that can improve the production efficiency of pole pieces while reducing the floor space and improve the pass rate of pole piece processing.

[0105] The disclosed embodiment provides a pole piece processing device, which is used to process the pole pieces to be processed for manufacturing the battery cells in the battery. The pole pieces to be processed can be a thin sheet structure including a current collector and an active material arranged on at least one surface in the thickness direction of the current collector itself. The pole piece processing equipment can be used to perform different cutting and slitting processes on the pole pieces to be processed so that the pole pieces to be processed are formed into pole pieces for manufacturing battery cells. For example, a larger and longer thin strip of pole piece to be processed can be cut into pole ears on both sides, and then the cut pole piece with two rows of pole ears can be cut into two strip pole pieces that can be used to manufacture battery cells. The pole piece processing equipment can also wind the processed strip pole piece so that the strip pole piece is formed into a pole piece film roll, so as to facilitate the transportation and storage of the strip pole piece.

[0106] The embodiment of the present disclosure provides a pole piece processing device, with reference to Figures 1 and 2. Figure 1 shows a schematic diagram of the composition structure of the pole piece processing device provided by the present disclosure, and Figure 2 shows a schematic diagram of the composition structure of the pole piece processing device provided by the present disclosure. As shown in Figures 1 and 2, the pole piece processing device includes: an unwinding mechanism 1, a tab forming mechanism 2, a recycling mechanism 3 and a slitting mechanism 4; wherein the unwinding mechanism 1 is used to carry the wound pole piece 01 to be processed; the tab forming mechanism 2 is arranged on the extension path C of the pole piece 01 to be processed, and is used to cut the pole piece 01 to be processed; the recycling mechanism 3 is arranged on the extension path C of the cut pole piece 02, and is located on the side of the tab forming mechanism 2 away from the unwinding mechanism 1, and the recycling mechanism 3 is used to remove the waste formed after cutting the pole piece 01 to be processed; along the extension path C of the cut pole piece 02, the slitting mechanism 4 is arranged on the side of the recycling mechanism 3 away from the tab forming mechanism 2, and the slitting mechanism 4 is used to cut the cut pole piece 02.

[0107] The electrode piece 01 to be processed, which is processed by the electrode processing equipment in the embodiment of the present disclosure, can be a electrode piece including a current collector and an active material, and the active material is coated on the surface of the current collector. The current collector can be a metal foil or a composite current collector. In order to improve the production efficiency of the electrode piece, the electrode piece 01 to be processed is usually set to a structural form including at least two current collectors. During the processing of the electrode piece 01 to be processed, the electrode piece 01 to be processed is cut into at least two parts to form at least two cut electrode pieces 03. Before the electrode piece 01 to be processed is cut, a plurality of electrode ears can be cut on both sides of the electrode piece 01 to be processed.

[0108] In the embodiment of the present disclosure, before processing the electrode piece 01 to be processed, the electrode piece 01 to be processed, which is wound into a film roll, needs to be placed on the unwinding mechanism 1 so that the electrode piece 01 to be processed can be carried by the unwinding mechanism 1. The film roll of the electrode piece 01 to be processed can be unrolled into a strip-shaped electrode piece 01 to be processed on the unwinding mechanism 1.

[0109] In the embodiment of the present disclosure, in order to cut and form multiple tabs on the electrode piece 01 to be processed, a tab forming mechanism 2 can be set along the extension path C of the strip-shaped electrode piece 01 to be processed, so that the electrode piece 01 to be processed can be cut by the tab forming mechanism 2.

[0110] Exemplarily, the tab forming mechanism 2 can be configured to include a structure comprising at least two laser cutters, and the high-power density laser beam emitted by the laser cutter is used to irradiate the electrode piece 01 to be processed, so that the electrode piece 01 to be processed is quickly heated to the vaporization temperature and evaporated to form holes. As the laser beam moves the electrode piece 01 to be processed, the holes continuously form narrow slits, thereby completing the cutting of the electrode piece 01 to be processed. For example, two laser cutters are respectively set on both sides of the electrode piece 01 to be processed, so that the two side edge portions of the electrode piece 01 to be processed are cut by the two laser cutters, and two rows of tabs can be formed on the electrode piece 01 to be processed to obtain a cut electrode piece 02. At the same time, in the process of cutting the electrode piece 01 to be processed by the tab forming mechanism 2, the cut waste needs to be removed to separate the waste from the cut electrode piece 02.

[0111] In some cases, the tab forming mechanism 2 may fail to completely separate the waste material from the cut electrode piece 02. In this case, the cut electrode piece 02 may cause the uncut waste material to continue to move to the next processing station. If the adhering waste material and the cut electrode piece 02 are not separated in time, there is a risk that the waste material may scrape the tab, deform the tab, or break the cut electrode piece 02.

[0112] For example, along the extension path C of the cut electrode piece 02, a recovery mechanism 3 can be provided on the side of the tab forming mechanism 2 away from the unwinding mechanism 1, so that waste materials adhering to the cut electrode piece 02 can be promptly removed by the recovery mechanism 3. For example, the recovery mechanism 3 can be provided with a structure capable of blowing a high-speed airflow toward the tab on the cut electrode piece 02, so that the waste materials can be blown away from the cut electrode piece 02 by the high-speed airflow.

[0113] In the disclosed 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. The cut electrode sheet 02 then needs to be split, separating the cut electrode sheet 02 from the middle into two split electrode sheets 03. A splitting mechanism 4 can be provided along the extended path C of the cut electrode sheet 02, positioned on the side of the recycling mechanism 3 away from the tab forming mechanism 2. This prevents waste from adhering to the cut electrode sheet 02 entering the splitting mechanism 4.

[0114] The electrode processing equipment provided by the embodiment of the present disclosure is provided with an unwinding mechanism 1. The electrode 01 to be processed that is wound into a film roll can be carried by the unwinding mechanism 1, and the electrode 01 to be processed that is wound into a film roll can also be unfolded into a strip-shaped electrode 01 to be processed by the unwinding mechanism 1. In addition, a tab forming mechanism 2 is provided along the extension path C of the electrode 01 to be processed. The tab forming mechanism 2 can be used to cut the electrode 01 to be processed, so as to form a tab on the electrode 01 to be processed. In addition, a recycling mechanism 3 is provided on the extension path C of the cut electrode 02. The recycling mechanism 3 can be used to forcibly separate the waste material adhering to the cut electrode 02, so as to reduce the risk of the waste material moving with the cut electrode 02, thereby causing the tab to be deformed or the strip of the cut electrode 02 to be broken. At the same time, a slitting mechanism 4 is provided on the extension path C of the cut electrode piece 02 , and the cut electrode piece 02 can be slit by the slitting mechanism 4 so as to be slit into at least two slit electrode pieces 03 .

[0115] Compared to the related art, the embodiment of the present disclosure is provided with a tab forming mechanism 2 and a slitting mechanism 4 in sequence along the extension path C of the electrode piece 01 to be processed, which can cut and slit the electrode piece 01 to be processed in sequence. In this way, the electrode piece 01 to be processed can be continuously cut and slit in one device, thereby improving the production efficiency of electrode processing and reducing the space occupied by the electrode processing equipment. At the same time, a recycling mechanism 3 is provided between the tab forming mechanism 2 and the slitting mechanism 4. The recycling mechanism 3 forcibly separates the adhering waste to reduce the adverse effects of the waste on the cut electrode piece 02, thereby improving the qualified rate of electrode processing.

[0116] In some embodiments, referring to Figures 3, 4, and 5, Figure 3 shows a first structural diagram of the air knife mechanism provided by the present disclosure, Figure 4 shows a second structural diagram of the air knife mechanism provided by the present disclosure, and Figure 5 shows a third structural diagram of the air knife mechanism provided by the present disclosure. The recovery mechanism 3 can be configured to include an air knife mechanism 31. As shown in Figures 3, 4, and 5, the air knife mechanism 31 includes an air knife support 311, an air knife roller 312, and an air knife body 313; wherein the air knife roller 312 is rotatably mounted on the air knife support 311, and the cut electrode 02 moves in contact with the air knife roller 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 312, the air outlet extends from the center of the cut electrode 02 toward the electrode ear on the cut electrode 02, and the air inlet is used to connect to the air source.

[0117] The air knife bracket 311 in the embodiment of the present disclosure is used to carry and install other components of the air knife mechanism 31. The air knife mechanism 31 can be fixedly installed at a workstation where the electrode is processed through the air knife bracket 311. For example, the air knife bracket 311 can be configured as a frame structure or a box structure.

[0118] In the disclosed embodiment, a wind knife roller 312 can be provided on the wind knife support 311. The wind knife roller 312 can be rotatably provided on the wind knife support 311, and the axial direction of the wind knife roller 312 is perpendicular to, or nearly perpendicular to, the extension path C of the cut electrode 02. For example, the wind knife roller 312 can be provided as a cylindrical structure. As the cut electrode 02 moves while being attached to the surface of the wind knife roller 312, the wind knife roller 312 rotates with the cut electrode 02. Alternatively, a drive member can be provided on the wind knife roller 312 to drive the wind knife roller 312 to rotate autonomously.

[0119] The air knife body 313 in the embodiment of the present disclosure is used to control the direction of the air flow blowing toward the cut electrode 02. The air knife body 313 can be installed on the air knife bracket 311. An air outlet is provided at one end of the air knife body 313, and the air outlet can be a long strip-shaped opening. An air inlet is provided at the other end of the air knife body 313, and the air inlet is connected to the air outlet. The air inlet can use a connector to connect the air knife body 313 to the air source through the air inlet. When installing the air knife body 313, the air outlet can be directed from the center of the cut electrode 02 toward the electrode lug on the cut electrode 02 along the axial direction D of the air knife roller shaft 312. For example, at least two air knife bodies 313 can be installed on the air knife bracket 311, and the two air knife bodies 313 are respectively directed toward the two sides of the cut electrode 02, so that waste can be cleaned from the two groups of electrode lugs on both sides of the cut electrode 02 through the two air knife bodies 313.

[0120] In the above embodiment, since the wind knife support 311 is rotatably provided with a wind knife roller 312, the cut electrode piece 02 can be supported by the wind knife roller 312 as it passes through the wind knife mechanism 31, thereby allowing the cut electrode piece 02 to stably move around the wind knife roller 312 along a fixed path to the next workstation. At the same time, a wind knife body 313 is provided on the wind knife support 311, and the wind knife body 313 can be connected to a high-pressure air source; the air outlet of the wind knife body 313 is directed from the center of the cut electrode piece 02 toward the tab of the cut electrode piece 02. In this way, waste material attached to the tab can be blown away from the tab by the airflow, separating the waste material from the tab and reducing the impact of waste material that has not been separated from the tab on the tab.

[0121] In some embodiments, as shown in Figures 3, 4 and 5, structural components including a flow guide 314, a contoured cover 315 and a negative pressure pipeline 316 can also be provided in the wind knife mechanism 31; wherein, the flow guide 314 is sleeved on the wind knife roller shaft 312 along the radial direction E of the wind knife roller shaft 312, and is located on the side of the pole ear on the wind knife roller shaft 312 away from the air outlet; the contoured cover 315 is installed on the wind knife bracket 311, and is opposite to the flow guide 314; the contoured cover 315 has an intake and an exhaust port, the shape of the intake port is adapted to the shape of the flow guide 314, and is located on the flow path of the air flow blown out of the air outlet, and the exhaust port is connected to one end of the negative pressure pipeline 316.

[0122] In the disclosed embodiment, a flow guide 314 can be provided on the wind knife roller shaft 312 to guide the flow direction of the airflow blown out from the air outlet of the wind knife body 313. For example, the flow guide 314 can be provided as a conical cone, which is sleeved on the wind knife roller shaft 312, and is located on the side of the wind knife roller shaft 312 where the tab is away from the air outlet of the wind knife body 313. The end of the cone with a larger diameter is located farther from the wind knife body 313 than the end with a smaller diameter. The diameter of the end with a smaller diameter matches the outer diameter of the wind knife roller shaft 312, and the cone and the wind knife roller shaft 312 can be connected by an interference fit.

[0123] In the disclosed embodiment, a contoured cover 315 can also be provided on the air knife support 311. A suction port can be provided at one end of the contoured cover 315. The suction port can be configured as an arc-shaped opening whose size matches that of the conical guide member 314. The suction port is positioned adjacent to the end of the guide member 314 that is away from the air knife body 313. Furthermore, the suction port is positioned in the flow path of the airflow from the air outlet on the air knife body 313. An exhaust port can be provided at the other end of the contoured cover 315. This allows waste material blown away from the tab by the airflow to enter the contoured cover 315.

[0124] In the embodiment of the present disclosure, a negative pressure pipeline 316 can also be set in the air knife mechanism 31, and the negative pressure pipeline 316 can be set to a structure including an air flow pipeline and a negative pressure pump; the negative pressure pump is connected to the air flow pipeline, and the negative pressure pump can generate negative pressure in the air flow pipeline; one end of the air flow pipeline is connected to the exhaust port of the contoured cover 315 to connect the negative pressure pipeline 316 to the exhaust port of the contoured cover 315.

[0125] In the above embodiment, the air blade mechanism 31 is provided with a flow guide 314 on the air blade roller 312, which can guide the movement path of waste material blown away from the tab by the airflow. Furthermore, a contoured cover 315 is provided adjacent to the flow guide 314, allowing waste material passing through the flow guide 314 to enter the contoured cover 315 for collection by the contoured cover 315. Furthermore, a negative pressure line 316 is connected to the discharge port of the contoured cover 315, which generates a negative pressure at the suction port of the contoured cover 315, thereby facilitating the entry of waste material into the contoured cover 315 and allowing the waste material entering the contoured cover 315 to be transported to a storage location via the negative pressure line 316.

[0126] In some embodiments, as shown in FIG1 , a compression assembly may be further provided in the recycling mechanism 3 , the compression assembly being connected to the end of the negative pressure line 316 away from the contoured cover 315 , and being used to compress and accommodate waste materials.

[0127] In the embodiment of the present disclosure, 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 away from the contour cover 315.

[0128] For example, the compression assembly can be configured as a structure including a housing, a compression member, and a driving member. The housing has a receiving chamber and a compression channel; the compression member is movably disposed within the compression channel; and the driving member is connected to the compression member and can drive the compression member to move within the compression channel to compress waste material entering the compression channel. The compressed waste material can then enter the receiving chamber.

[0129] In the above embodiment, since a compression component is provided in the recovery 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 conducive to the storage of the waste material and can increase the capacity of the compression component for the waste material.

[0130] In some embodiments, as shown in Figure 1, a first detection component 91 can also be set in the electrode processing equipment; on the extension path C along the cut electrode 02, the first detection component 91 is set on the side of the air knife mechanism 31 away from the electrode ear forming mechanism 2, and the first detection component 91 is used to obtain image data of the cut electrode 02, and the image data includes waste area information of the cut electrode 02.

[0131] In the embodiment of the present disclosure, in order to know whether the processing quality of the cut pole piece 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 pole piece 02 through the first detection component 91. By analyzing the image data of the cut pole piece 02, it can be determined whether the appearance and structural shape of each part on the cut pole piece 02 meet the design requirements.

[0132] Exemplarily, the first detection component 91 may be configured to include a charge coupled device (CCD) camera, and the CCD camera may be used to photograph the cut pole piece 02 to obtain an image of the cut pole piece 02 .

[0133] In another example, multiple CCD cameras can be positioned along the extension path C of the cut electrode sheet 02. For example, a CCD camera can be positioned for each row of electrode tabs formed on the cut electrode sheet 02 to capture images of each row of tabs. Alternatively, a CCD camera can be positioned at the edge of the active material on the cut electrode sheet 02 to capture images of the edge of the active material. Alternatively, a CCD camera can be positioned on both the front and back sides of the cut electrode sheet 02 to capture images of the front and back sides of the cut electrode sheet 02. Based on the captured images of different portions of the cut electrode sheet 02, these portions can be analyzed to determine whether the quality of the cut electrode sheet 02 meets design requirements. If quality defects are detected in certain portions of the cut electrode sheet 02 through image analysis, defective areas in these portions can be recorded based on the captured image data. The defective area information includes the location of the defective areas on the cut electrode sheet 02.

[0134] 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 cleaned by the air knife mechanism 31 can be obtained through the first detection component 91, so that whether the processing quality of the cut electrode 02 is qualified can be judged based on the obtained image data.

[0135] In some embodiments, as shown in Figure 1, the electrode processing equipment also includes a first marking component 94. On the extension path C along the cut electrode 02, the first marking component 94 is arranged 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 scrap area information. The marking instruction is used to control the first marking component 94 to mark the scrap area on the cut electrode 02.

[0136] In the embodiment of the present disclosure, when the first detection component 91 detects that there is a waste area on the cut electrode piece 02, the waste area can be marked.

[0137] For example, a first marking assembly 94 can be positioned adjacent to the first detection assembly 91 along the extended path C of the cut electrode piece 02, and electrically connected to the first detection assembly 91. For example, the first marking assembly 94 can be configured to move relative to the first detection assembly 91 and include a structure capable of marking the cut electrode piece 02. Thus, if the first detection assembly 91 detects a defective area on the cut electrode piece 02, a marking instruction can be sent to the first marking assembly 94 based on the defective area information. In response to the marking instruction, the first marking assembly 94 moves relative to the cut electrode piece 02 and marks the defective area on the cut electrode piece 02.

[0138] In the above embodiment, since a first marking component 94 electrically connected to the first detection component 91 is provided in the electrode processing equipment, the scrap area on the cut electrode 02 can be marked by the first marking component 94, thereby facilitating the processing of the cut electrode 02 containing the scrap area in subsequent processing steps, thereby reducing the risk of unqualified cut electrode 02 being used to manufacture battery cells.

[0139] In some embodiments, referring to Figures 6, 7, 8 and 9, Figure 6 shows a structural schematic diagram 1 of the slitting mechanism 4 provided in the present disclosure, Figure 7 shows a cross-sectional schematic diagram along the AA direction in Figure 6 provided in the present disclosure, Figure 8 shows a cross-sectional schematic diagram along the BB direction in Figure 6 provided in the present disclosure, and Figure 9 shows a structural schematic diagram 2 of the slitting mechanism 4 provided in the present disclosure. The slitting mechanism 4 includes a first support seat 41, a second support seat 42, a first knife shaft 43, a second knife shaft 44, a slitting knife 45 and an adjustment component 46; wherein, the first support seat 41 and the second support seat 42 are connected in the radial direction E along the first knife shaft 43; the first knife shaft 43 is rotatably set on the first support seat 41, and the second knife shaft 44 is rotatably set on the second support seat 42, and the first knife shaft 43 and the second knife shaft 44 are set in the same direction; the first knife shaft 43 and the second knife shaft 44 are respectively provided with corresponding slitting knives 45; the adjustment component 46 is arranged between the first support seat 41 and the second support seat 42, and in the radial direction E along the first knife shaft 43, the adjustment component 46 is used to adjust the distance between the first support seat 41 and the second support seat 42.

[0140] In the embodiment of the present disclosure, a first support seat 41 and a second support seat 42 can be provided in the slitting mechanism 4 to carry and install two knife shafts through the first support seat 41 and the second support seat 42. In the radial direction E along the first knife shaft 43, the first support seat 41 and the second support seat 42 are connected.

[0141] 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 set, and another first support seat 41 and another second support seat 42 are connected as a set. The two ends of the first blade shaft 43 are rotatably mounted on the two first support seats 41, and the two ends of the second blade shaft 44 are rotatably mounted on the two second support seats 42. The axial direction of the first blade shaft 43 is aligned with the axial direction of the second blade shaft 44, that is, the two blade shafts are arranged in parallel.

[0142] In another example, a sleeve 40 can be respectively mounted on the first blade shaft 43 and the second blade shaft 44, wherein the outer diameter of the sleeve 40 is smaller than the outer diameter of the slitting blade 45. In the axial direction D along the first blade shaft 43, the slitting blade 45 can be clamped and fixed on the first blade shaft 43 and the second blade shaft 44 by the sleeve 40.

[0143] As another example, in order to facilitate the installation of 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, and another first support seat 41 can be movably connected to the slitting base 49 along the axial direction D of the first knife shaft 43.

[0144] In another example, in order to facilitate adjustment of the distance between the first blade shaft 43 and the second blade shaft 44, an adjustment assembly 46 can be provided between the first support seat 41 and the second support seat 42. In this way, along the radial direction E of the first blade shaft 43, the distance between the first support seat 41 and the second support seat 42 can be adjusted by the adjustment assembly 46.

[0145] In the above embodiment, since the first support seat 41 and the second support seat 42 are provided in the slitting mechanism 4, the first blade shaft 43 and the second blade shaft 44 can be installed on the first support seat 41 and the second support seat 42, respectively, which facilitates the installation of the two blade shafts. In addition, an adjustment component 46 is provided between the first support seat 41 and the second support seat 42. The distance between the first support seat 41 and the second support seat 42 can be adjusted by the adjustment component 46, thereby adjusting the distance between the first blade shaft 43 and the second blade shaft 44. In this way, slitting knives 45 of different diameters can be installed on the first blade shaft 43 and the second blade shaft 44, and the two slitting knives 45 can be adjusted by the adjustment component 46 so that the two slitting knives 45 are relative to each other, thereby improving the applicability of the slitting mechanism 4.

[0146] In some embodiments, as shown in Figure 8, the adjustment assembly 46 can be set to a structural form including an adjustment member 461 and a locking member 462; wherein, the adjustment member 461 is slidably arranged between the first support seat 41 and the second support seat 42, and the locking member 462 is installed on the first support seat 41 or the second support seat 42, and the locking member 462 is in contact with the adjustment member 461. In the process of the locking member 462 moving relative to the first support seat 41 toward or away from the adjustment member 461, the locking member 462 can drive the adjustment member 461 to move relative to the first support seat 41 to adjust the distance between the first support seat 41 and the second support seat 42.

[0147] In the embodiment of the present disclosure, in order to facilitate adjustment of the adjustment assembly 46 , an adjusting member 461 and a locking member 462 that abut against each other may be provided in the adjustment assembly 46 .

[0148] For example, the adjustment member 461 can be configured as a wedge-shaped block. Two wedge-shaped blocks can be provided in the adjustment assembly 46, and the two wedge-shaped blocks slide and abut against each other in a centrally symmetrical manner. The two wedge-shaped blocks are slidably installed between the first support seat 41 and the second support seat 42, and the first support seat 41 and the second support seat 42 abut against each other through the two wedge-shaped blocks. In this way, as the two wedge-shaped blocks slide relative to each other, the thickness of the two wedge-shaped blocks will change, thereby driving the first support seat 41 and the second support seat 42 to move in the radial direction E along the first blade axis 43.

[0149] In another example, the locking member 462 can be installed on the first support seat 41 or the second support seat 42. For example, the locking member 462 can be a bolt, and the end of the bolt can be abutted against the adjusting member 461. In this way, the adjusting member 461 can be driven to move relative to the first support seat 41 by screwing the bolt. For example, when the screw moves toward the direction of the wedge block, the wedge blocks can be moved closer to each other, and the thickness of the two wedge blocks will increase, which can increase the distance between the two blade shafts. When the screw moves away from the wedge block, the wedge blocks can be moved away from each other, and the thickness of the two wedge blocks will decrease, which can reduce the distance between the two blade shafts.

[0150] In another example, in order to facilitate the installation of the locking member 462, the adjustment fixing seat 463 can be fixedly installed on the first support seat 41 or the second support seat 42. A threaded hole adapted to the bolt is provided on the adjustment fixing seat 463 to install the bolt on the adjustment fixing seat 463.

[0151] In the above embodiment, since the adjusting member 461 is slidably disposed between the first support seat 41 and the second support seat 42, the adjusting member 461 can be moved relative to the first support seat 41 to change the distance between the first support seat 41 and the second support seat 42. At the same time, the locking member 462 is installed on the first support seat 41 or the second support seat 42, and the adjusting member 461 can be driven by the locking member 462 to move, so that the adjusting member 461 can move relative to the first support seat 41. After the distance between the first support seat 41 and the second support seat 42 is adjusted, the adjusting member 461 can be fixed relative to the first support seat 41 by the locking member 462 so that it cannot move freely, thereby maintaining a constant distance between the first support seat 41 and the second support seat 42.

[0152] In some embodiments, as shown in Figures 6 and 9, the slitting mechanism 4 also includes a slitting positioning assembly 47, which is installed on the first support seat 41 and / or the second support seat 42. The slitting positioning assembly 47 is used to limit the position of the second support seat 42 relative to the first support seat 41.

[0153] In the embodiment of the present disclosure, after the first support seat 41 is connected to the second support seat 42, in order to keep the relative positions of the first support seat 41 and the second support seat 42 unchanged, a slitting positioning assembly 47 can be installed on the first support seat 41 and the second support seat 42, or a slitting positioning assembly 47 can be installed on the first support seat 41 or the second support seat 42 to position the first support seat 41 and the second support seat 42.

[0154] Exemplarily, the slitting and positioning assembly 47 can be configured to include a radial positioning member and an axial positioning member. A radial positioning member can be mounted on the first sidewall of the first support seat 41 in a direction perpendicular to the first support seat 41 and extending to the sidewall of the second support seat 42. The radial positioning member can be used to limit the movement of the second support seat 42 relative to the first support seat 41 in the direction perpendicular to the first support seat 41 and the second support seat 42. For example, the radial positioning member can be configured as a radial positioning block.

[0155] In another example, a slide groove can be provided on the radial positioning member. The slide groove extends from the sidewall of the radial positioning member and extends from the first support seat 41 to the second support seat 42. A slide post that matches the slide groove can be provided on the second support seat 42. During the assembly process of the first support seat 41 and the second support seat 42, the slide post is engaged with the slide groove, which can improve the accuracy of the positioning of the first support seat 41 and the second support seat 42.

[0156] In another example, an axial positioning member can be installed on the second sidewall of the first support seat 41 in the axial direction D along the first blade axis 43, and the axial positioning member can be extended to the sidewall of the second support seat 42. For example, the axial positioning member can be an axial positioning block. In this way, the axial positioning member can limit the movement of the second support seat 42 relative to the first support seat 41 in the axial direction D along the first blade axis 43.

[0157] It should be noted that the axial positioning member and the radial positioning member may also be installed on the second support seat 42 and extend to the side wall of the first support seat 41. The embodiment of the present disclosure does not limit the specific installation positions of the axial positioning member and the radial positioning member.

[0158] In the above embodiment, since a slitting positioning assembly 47 is installed on the first support seat 41 and / or the second support seat 42, the slitting positioning assembly 47 can be used to limit the position of the second support seat 42 relative to the first support seat 41, such as limiting the position of the second support seat 42 relative to the first support seat 41 in the axial direction D along the first knife axis 43, thereby improving the installation accuracy of the first support seat 41 and the second support seat 42, and reducing the risk of unnecessary movement of the second support seat 42 relative to the first support seat 41, thereby improving the installation accuracy of the slitting knife 45.

[0159] In some embodiments, as shown in Figure 6, the slitting mechanism 4 also includes a measuring piece 48, one end of the measuring piece 48 is connected to the first support seat 41, and the other end is connected to the second support seat 42. The measuring piece 48 is used to measure the distance between the first support seat 41 and the second support seat 42.

[0160] In the embodiment of the present disclosure, in order to accurately control the change in the distance during adjustment of the distance between the first support base 41 and the second support base 42, a measuring member 48 may be provided between the first support base 41 and the second support base 42 to provide real-time feedback of the distance value between the first support base 41 and the second support base 42 through the measuring member 48.

[0161] For example, the measuring element 48 can be a digital micrometer, which can be mounted on the first support 41, and the measuring head of the digital micrometer can be connected to the second support 42. For example, a digital micrometer can be provided on each of the two sets of first support 41 and second support 42. The measuring element 48 can also be another measuring device with scale lines capable of measuring lengths and distances, which is not limited in the present embodiment.

[0162] In the above embodiment, since a measuring piece 48 is provided between the first support seat 41 and the second support seat 42, during the process of adjusting the distance between the first support seat 41 and the second support seat 42, the distance value between the first support seat 41 and the second support seat 42 can be fed back in real time through the measuring piece 48, so as to facilitate the quick and accurate adjustment of the distance between the first support seat 41 and the second support seat 42.

[0163] In some embodiments, as shown in Figure 1, the recycling mechanism 3 also includes a cleaning mechanism 33. On the extension path C along the slit electrode 03, the cleaning mechanism 33 is arranged on the side of the slitting mechanism 4 away from the unwinding mechanism 1. The cleaning mechanism 33 is connected to the compression component. The cleaning mechanism 33 is used to clear impurities on the slit electrode 03, and the compression component is used to compress and accommodate impurities.

[0164] In the embodiment of the present disclosure, after the cut electrode pieces 02 are cut by the cutting mechanism 4, some dust or magnetic impurities may be present on the obtained cut electrode pieces 03. A cleaning mechanism 33 may be provided at the rear end of the cutting mechanism 4 along the extension path C of the cut electrode pieces 03 to remove impurities adhering to the cut electrode pieces 02.

[0165] For example, the cleaning mechanism 33 can be configured to include a brush dust removal assembly 331. The brush dust removal assembly 331 is placed in contact with the cut electrode piece 02, so that the brush on the brush dust removal assembly 331 can sweep away dust and other particles on the cut electrode piece 02. Simultaneously, the brush dust removal assembly 331 is connected to a compression assembly via a pipeline. The swept dust and other particles can enter the compression assembly through the pipeline, where they can be collected and contained.

[0166] As another example, the cleaning mechanism 33 can be configured to include a magnetic dust removal assembly 331. The magnetic dust removal assembly 331 is positioned adjacent to the cut pole piece 02, so that the magnetic elements on the magnetic dust removal assembly 331 absorb magnetic and conductive impurities from the cut pole piece 02. Simultaneously, the magnetic dust removal assembly 331 is connected to a compression assembly via a pipeline. Impurities absorbed from the cut pole piece 02 can enter the compression assembly through the pipeline, where they can be collected and contained by the compression assembly.

[0167] 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 cut electrode piece 03, impurities adhering to the cut electrode piece 02 can be cleared by the cleaning mechanism 33 to keep the cut electrode piece 02 clean, thereby improving the quality of the battery cell manufactured by sampling the cut electrode piece 02.

[0168] In some embodiments, as shown in Figure 1, the pole piece processing equipment also includes multiple driving mechanisms, which are arranged on the extension path C of the cut pole piece 02. The driving mechanism is used to drive the cut pole piece 02 or the cut pole piece to move in a direction away from the pole ear forming mechanism 2.

[0169] In the embodiment of the present disclosure, the electrode piece 01 to be processed needs to move sequentially along the various mechanisms in the electrode piece slitting equipment. At least two driving mechanisms can be provided in the electrode piece processing equipment to drive the electrode piece 01 to be processed to move along the extension path C of the electrode piece 01 to be processed. 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 piece 02.

[0170] For example, a first drive mechanism 81 can be provided on a side of the air knife mechanism 31 away from the tab forming mechanism 2. The first drive mechanism 81 can be configured as a structure including a driving roller and a driven roller. The cut electrode piece 02 passes between the driving roller and the driven roller, and the driven roller presses the cut electrode piece 02 against the driving roller. The driving roller is in transmission connection with a driving member, which can drive the driving roller to rotate, thereby driving the cut electrode piece 02 to move away from the air knife mechanism 31.

[0171] In another example, a second drive mechanism 82 may be provided on a side of the cleaning mechanism 33 that is away from the tab forming mechanism 2. The second drive mechanism 82 may also be configured to include a driving roller and a driven roller. The slit electrode sheet 03 passes between the driving roller and the driven roller, and the driving roller can drive the slit electrode sheet 03 in a direction away from the slitting mechanism 4.

[0172] In the above embodiment, since a plurality of driving mechanisms are provided along the extension path C of the cut electrode piece 02, on the one hand, the cut electrode piece 02 or the split electrode piece 03 can be driven to move by the driving mechanism, so that the cut electrode piece 02 or the split electrode piece 03 can reach the position of the next processing mechanism; on the other hand, the driving force of the two adjacent driving mechanisms can be controlled to control the tension of the cut electrode piece 02 or the split electrode piece 03 located between the two adjacent driving mechanisms, thereby improving the stability of the movement path of the continuous electrode piece to be processed 01, the cut electrode piece 02 and the split electrode piece 03.

[0173] In some embodiments, as shown in Figure 1, the electrode processing equipment also includes a winding mechanism 5. On the extension path C along the cut electrode 03, the winding mechanism 5 is arranged on the side of the cutting mechanism 4 away from the recycling mechanism 3, and the winding mechanism 5 is used to wind the cut electrode 03.

[0174] In the embodiment of the present disclosure, after the cut electrode piece 02 is cut by the cutting mechanism 4, at least two cut electrode pieces 03 can be obtained. At this point, the cutting and slitting process of the electrode piece 01 to be processed is completed, and the cut electrode pieces 03 need to be wound and collected.

[0175] For example, a set of winding mechanisms 5 is provided along the extension paths C of the two slit electrode sheets 03, and the winding mechanisms 5 are provided 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 mechanisms 5.

[0176] In the above embodiment, since a winding mechanism 5 is provided on the extension path C of the slit electrode 03, the slit electrode 03 can be automatically wound and collected by the winding mechanism 5 so that the slit electrode 03 is formed into an electrode film roll, thereby facilitating the storage and use of the electrode 01 to be processed that has completed various processing processes.

[0177] In some embodiments, as shown in Figure 1, 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 arranged on the extension path C of the slit pole piece 03, and the winding and changing assembly 53 is arranged between the first winding assembly 51 and the second winding assembly 52, and the winding and changing assembly 53 is used to guide the slit pole piece 03 to move toward the first winding assembly 51 or the second winding assembly 52, so as to wind the slit pole piece 03 through the first winding assembly 51 or the second winding assembly 52.

[0178] In the disclosed embodiment, two winding assemblies may be provided in a set of winding mechanisms 5 , and the split pole pieces 03 may be alternately wound by the two winding assemblies to improve the winding efficiency.

[0179] Exemplarily, adjacent first and second winding assemblies 51 and 52 may be provided along the extension path C of the slit electrode sheet 03 , and both the first and second winding assemblies 51 and 52 may rotate to wind the slit electrode sheet 03 .

[0180] In another example, a reel-and-reel assembly 53 may be provided between the first reel assembly 51 and the second reel assembly 52. ​​After the slit electrode sheet 03 passing through the second drive mechanism 82 reaches the reel-and-reel assembly 53, the reel-and-reel assembly 53 may guide the slit electrode sheet 03 to the first reel assembly 51 or the second reel assembly 52. ​​For example, after the first reel assembly 51 completes winding of a electrode film roll, the reel-and-reel assembly 53 may guide the slit electrode sheet 03 to the second reel assembly 52, where the second reel assembly 52 may continue to wind the slit electrode sheet 03.

[0181] In another example, the winding torque of the first winding assembly 51 or the second winding assembly 52 can be controlled to increase the tension on the slit electrode sheet 03. In this way, the friction force on the slit electrode sheet 03 of each layer in the wound electrode sheet film roll can be increased, which can effectively reduce the risk of the wound electrode sheet film roll becoming loose or having uneven sides.

[0182] In the above embodiment, since a first winding assembly 51 and a second winding assembly 52 are provided in the winding mechanism 5, and a winding and reel changing assembly 53 is provided between the first winding assembly 51 and the second winding assembly 52, the slit electrode 03 can be guided to the first winding assembly 51 or the second winding assembly 52 by the winding and reel changing assembly 53, so that the slit electrode 03 can be continuously wound, without having to stop the processing equipment to replace the electrode film roll after a winding assembly completes the winding of an electrode film roll, thereby improving the processing efficiency of the electrode 01 to be processed.

[0183] In some embodiments, as shown in Figure 1, the winding mechanism 5 also includes a shaping component 54, which is arranged between the first winding component 51 and the second winding component 52. The shaping component 54 is used to set a shaping piece on the electrode film roll to fix the end cut edge of the electrode film roll through the shaping piece. The electrode film roll is formed by winding the cut electrode 03 through the first winding component 51 or the second winding component 52.

[0184] In the embodiment of the present disclosure, after the electrode film roll is wound by the first winding assembly 51 or the second winding assembly 52, the end cut edge of the cut electrode 03 on the electrode film roll is in a free state, and the end cut edge needs to be fixed to prevent the wound electrode film roll from unraveling.

[0185] Exemplarily, a shaping assembly 54 can be provided between the first winding assembly 51 and the second winding assembly 52, and the shaping assembly 54 can move toward the first winding assembly 51 or the second winding assembly 52, so as to set a shaping piece on the completed electrode film roll through the shaping assembly 54, and set the shaping piece on the end cutting edge to fix the end cutting edge.

[0186] Referring to Figures 10, 11 and 12, Figure 10 shows a schematic diagram of the structure of the electrode film roll provided by the present disclosure, Figure 11 shows a schematic diagram of the structure of the electrode film roll provided by the present disclosure, and Figure 12 shows a schematic diagram of the structure of the shaping member provided by the present disclosure. As shown in Figure 12, the shaping member 05 can be made of adhesive tape or the like. A broken dotted line is set on the adhesive tape, and the direction of the broken dotted line is the same as the axial direction D of the adhesive tape roll. The adhesive tape roll can be set on the shaping component 54, which makes it easy to remove the same size of adhesive tape from the adhesive tape roll each time. The adhesive tape can be attached to the electrode film roll through the shaping component 54. For example, as shown in Figure 11, three or other numbers of adhesive tapes can be attached to the end cut edge of the electrode film roll to fix the end cut edge with the adhesive tape.

[0187] In the above embodiment, since a shaping component 54 is provided between the first winding component 51 and the second winding component 52, a shaping piece 05 can be provided on the completed electrode film roll through the shaping component 54, so as to fix the end cut edge on the electrode film roll through the shaping piece 05, thereby reducing the risk of the electrode film roll becoming loose or spreading.

[0188] In some embodiments, as shown in Figure 1, 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 cutting edge on the electrode film roll, and send a positioning instruction to the shaping component 54 according to the position information. The positioning instruction is used to control the shaping component 54 to set the shaping part 05.

[0189] In the disclosed embodiment, if the position of the end cutting edge of each electrode film roll wound by the first winding assembly 51 or the second winding assembly 52 varies, the shaping member 05 may not be accurately positioned on the end cutting edge during the process of positioning the shaping member 05 on the electrode film roll by the shaping assembly 54. Therefore, a shaping detection assembly 55 may be provided between the first winding assembly 51 and the second winding assembly 52 to determine the position of the end cutting edge on the electrode film roll.

[0190] For example, the shape detection assembly 55 can be configured as a structure including a driver and a CCD camera. The CCD camera is mounted on the driver, and the driver drives the CCD camera to move toward the electrode film roll on the first winding assembly 51 or the second winding assembly 52. ​​In this way, the CCD camera can be used to photograph the electrode film roll to obtain an image of the electrode film roll including the cut edge. By analyzing the image of the electrode film roll, positional information including the position of the cut edge on the electrode film roll can be obtained.

[0191] In another example, the shaping detection assembly 55 can be electrically connected to the shaping assembly 54, that is, the shaping detection assembly 55 can be electrically connected to the driver in the shaping assembly. In this way, based on the acquired position information of the terminal cutting edge, a positioning instruction can be sent to the shaping assembly 54, and the positioning instruction includes the position information of the terminal cutting edge. In response to the positioning instruction, the driver in the shaping assembly 54 drives the shaping assembly 54 to a position aligned with the terminal cutting edge, thereby accurately positioning the shaping element 05 on the terminal cutting edge.

[0192] In the above embodiment, since a shaping detection component 55 electrically connected to the shaping component 54 is provided in the winding mechanism 5, the position information of the end cutting edge on the electrode film roll can be obtained through the shaping detection component 55, so that a positioning instruction can be sent to the shaping component 54 according to the position information, and the shaping component 54 can be controlled to move to a position aligned with the end cutting edge, and then the shaping member 05 can be set on the end cutting edge, thereby improving the accuracy of setting the position of the shaping member 05 on the electrode film roll.

[0193] In some embodiments, as shown in Figure 1, the winding mechanism 5 also includes a pressing component 56, and a pressing component 56 is provided at positions corresponding to the first winding component 51 and the second winding component 52 respectively. The pressing component 56 is used to press and abut against the electrode film roll on the first winding component 51 and the second winding component 52.

[0194] In the disclosed embodiment, a pressing assembly 56 can be provided for each winding assembly. The pressing assembly 56 can be provided in a structure including a driving member and a pressing roller. The driving member can drive the pressing roller to move axially toward the electrode film roll on the winding assembly so that the pressing roller presses against the electrode film roll. The pressing roller can also apply a certain pressure to the electrode film roll.

[0195] In the above embodiment, since a pressing component 56 is provided for each winding component, during the process of winding the cut electrode sheet by the first winding component 51 or the second winding component 52, the pressing component 56 can be pressed tightly against the electrode film roll, thereby improving the flatness of the winding of the cut electrode sheet 03.

[0196] In some embodiments, as shown in Figure 2, on the extension path C perpendicular to the electrode piece to be processed 01, the unwinding mechanism 1 and the winding mechanism 5 are located on the first side F of the electrode piece to be processed 01, and the recovery mechanism 3 and the slitting mechanism 4 are located on the second side G of the electrode piece to be processed 01. The first side F and the second side G are opposite sides of the electrode piece to be processed 01.

[0197] In the embodiment of the present disclosure, when setting the position of each mechanism in the electrode mechanism equipment, each mechanism can be set on different sides of the extension path C of the electrode 01 to be processed.

[0198] For example, along the direction perpendicular to the extension path C of the electrode sheet 01 to be processed, the unwinding mechanism 1 and the rewinding mechanism 5 at both ends of the electrode sheet processing equipment can be arranged on the first side F of the electrode sheet 01 to be processed. That is, when operating the unwinding mechanism 1 and placing the electrode sheet 01 to be processed on the unwinding mechanism 1, operations need to be performed on the first side F. Similarly, when operating the rewinding mechanism 5 and removing the electrode film roll from the rewinding mechanism 5, operations also need to be performed on the first side F.

[0199] In another example, an isolation member 95 may be provided between each processing mechanism. The isolation member 95 is provided along the extension path C and can isolate the two sides of the electrode piece 01 to be processed.

[0200] In another example, the air knife mechanism 31 and the cleaning mechanism 33 in the recovery 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 piece 01 to be processed, along the direction perpendicular to the extension path C of the electrode piece 01 to be processed. In this way, when manual operation of the air knife mechanism 31, the cleaning mechanism 33, the tab forming mechanism 2 and the slitting mechanism 4 is required, the corresponding operation needs to be performed on the second side G.

[0201] In the above embodiment, since the unwinding mechanism 1, the winding mechanism 5 and other mechanisms in the electrode processing equipment are respectively arranged on both sides of the electrode 01 to be processed, the loading and unloading areas and the area where manual operation can be performed can be located in two non-connected areas, which can improve the safety of operation.

[0202] In some embodiments, as shown in Figure 1, the unwinding mechanism 1 includes a first unwinding component 11, a second unwinding component 12 and an unwinding and reel-changing component 13; wherein, the first unwinding component 11 and the second unwinding component 12 are both arranged on the extension path C of the electrode 01 to be processed, and the unwinding and reel-changing component 13 is arranged between the first unwinding component 11 and the second unwinding component 12, and the unwinding and reel-changing component 13 is used to guide the electrode 01 to be processed on the first unwinding component 11 to move toward the electrode 01 to be processed on the second unwinding component 12, or guide the electrode 01 to be processed on the second unwinding component 12 to move toward the electrode 01 to be processed on the first unwinding component 11.

[0203] In the embodiment of the present disclosure, the unwinding mechanism 1 can be configured to include a structure comprising at least two unwinding assemblies, and the two unwinding assemblies can alternately provide the pole pieces 01 to be processed to the pole piece processing equipment.

[0204] For example, adjacent first unwinding assembly 11 and second unwinding assembly 12 can be set along the extension path C of the electrode to be processed 01, and both the first unwinding assembly 11 and the second unwinding assembly 12 can rotate to unfold the wound electrode to be processed 01 into a strip-shaped electrode to be processed 01.

[0205] In another example, an unwinding and reel-changing assembly 13 can be provided between the first unwinding assembly 11 and the second unwinding assembly 12. The unwinding and reel-changing assembly 13 can guide the electrode piece 01 to be processed on one rewinding assembly to move toward the electrode piece 01 to be processed on another rewinding assembly. For example, when the electrode piece 01 to be processed on the first unwinding assembly 11 is about to be used up, the electrode piece 01 to be processed on the second unwinding assembly 12 can be guided to the position of the electrode piece 01 to be processed on the first unwinding assembly 11 by the unwinding and reel-changing assembly 13, so that the electrode piece 01 to be processed on the first unwinding assembly 11 can continue to drive the electrode piece 01 to be processed on the second unwinding assembly 12 to move to the subsequent processing station.

[0206] In the above embodiment, since the first unwinding assembly 11 and the second unwinding assembly 12 are provided in the unwinding mechanism 1, and the unwinding and reel-changing assembly 13 is provided between the first unwinding assembly 11 and the second unwinding assembly 12, the electrode piece 01 to be processed on one unwinding assembly can be guided to the electrode piece 01 to be processed on another unwinding assembly through the unwinding and reel-changing assembly 13, so that the electrode piece 01 to be processed can be continuously provided to the electrode piece processing equipment. In addition, one of the first unwinding assembly 11 and the second unwinding assembly 12 can be used as a cache position to place the electrode piece 01 to be processed.

[0207] In some embodiments, as shown in Figure 1, the unwinding mechanism 1 also includes a connecting component 14, which is arranged between the first unwinding component 11 and the second unwinding component 12. The connecting component 14 is used to set a connecting piece to the electrode piece 01 to be processed on the first unwinding component 11 or the second unwinding component 12, and the connecting piece is used to connect the electrode piece 01 to be processed on the first unwinding component 11 and the electrode piece 01 to be processed on the second unwinding component 12.

[0208] In the embodiment of the present disclosure, when the electrode piece 01 to be processed on one unwinding assembly is pulled by the electrode piece 01 to be processed on another unwinding assembly to move to the subsequent workstation, it is necessary to connect the electrode pieces 01 to be processed on the two unwinding assemblies together. To do this, a connecting assembly 14 can be provided between the first unwinding assembly 11 and the second unwinding assembly 12, and the connecting assembly 14 can be provided at the front end of the unwinding and reel-changing assembly 13.

[0209] For example, the connecting member can be made of double-sided tape. The connecting assembly 14 can be configured to include a driving member and a gluing member. The driving member can drive the gluing member to move toward the first unwinding assembly 11 or the second unwinding assembly 12. The gluing member can be used to apply double-sided tape to the electrode piece 01 to be processed on the first unwinding assembly 11 or the second unwinding assembly 12. In this way, the electrode piece 01 to be processed on the first unwinding assembly 11 and the second unwinding assembly 12 can be bonded together using the double-sided tape.

[0210] In the above embodiment, since a connecting component 14 is provided between the first unwinding component 11 and the second unwinding component 12, a connecting piece can be provided to the electrode piece 01 to be processed on the first unwinding component 11 or the second unwinding component 12 through the connecting component 14, so that under the guidance of the unwinding and reel-changing component 13, the electrode piece 01 to be processed on the first unwinding component 11 and the second unwinding component 12 can be connected together.

[0211] In some embodiments, as shown in Figure 1, the unwinding mechanism 1 also includes an unwinding detection component 15, which is electrically connected to the first unwinding component 11 and the second unwinding component 12 respectively. The unwinding detection component 15 is used to detect the lateral displacement position of the electrode 01 to be processed on the extension path C, and send a correction instruction to the first unwinding component 11 or the second unwinding component 12 according to the lateral displacement position. The correction instruction is used to control the first unwinding component 11 or the second unwinding component 12 to move in the axial direction D along the first unwinding component 11.

[0212] In the disclosed embodiment, there is a risk of lateral displacement relative to the preset path during the movement of the electrode piece 01 to be processed along the extension path C. An unwinding detection member 15 can be provided at the rear end of the unwinding and rewinding assembly 13 and electrically connected to the first unwinding assembly 11 and the second unwinding assembly 12, respectively.

[0213] For example, the unwinding detection member 15 can be a device such as a through-beam photoelectric sensor. During the movement of the electrode piece 01 to be processed, if the electrode piece 01 to be processed moves sideways, the through-beam photoelectric sensor can generate a corresponding correction instruction. The correction instruction can control the corresponding first unwinding assembly 11 or the second unwinding assembly 12 to move in the axial direction D along the first unwinding assembly 11, thereby driving the electrode piece 01 to be processed to move along the axial direction D of the first unwinding assembly 11, thereby returning the electrode piece 01 to be processed to the preset path.

[0214] In the above embodiment, since the unwinding mechanism 1 is provided with an unwinding detection member 15, the unwinding detection member 15 can be used to detect whether the electrode piece 01 to be processed has shifted sideways on the extension path C. When it is determined that the electrode piece 01 to be processed has shifted sideways, a correction instruction 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, thereby driving the electrode piece 01 to be processed to return to the preset path, thereby reducing the risk of the electrode piece 01 to be processed being broken by lateral tension, and allowing the electrode piece 01 to be processed to always move along the fixed extension path C.

[0215] In some embodiments, as shown in Figure 1, the pole piece processing equipment also includes a tape connecting mechanism 6. Along the extension path C of the pole piece 01 to be processed, the tape connecting mechanism 6 is arranged between the unwinding mechanism 1 and the pole ear forming mechanism 2. The tape connecting mechanism 6 is used to connect the broken pole piece 01 to be processed.

[0216] In the embodiment of the present disclosure, there is a risk of tape breakage when the electrode piece 01 to be processed moves along the extension path C. In order to facilitate manual connection of the broken electrode piece 01 to be processed, a tape connection mechanism 6 can be set between the unwinding mechanism 1 and the tab forming mechanism 2.

[0217] Exemplarily, the connecting mechanism 6 can be set on the extension path C of the pole piece to be processed 01, and the connecting mechanism 6 can be set to a structure including at least two clamping members, and the two ends of the broken pole piece to be processed 01 can be clamped by the two clamping members respectively, so that the two ends of the broken pole piece to be processed 01 are in a relatively fixed position, which is convenient for the operator to connect the broken pole piece to be processed 01.

[0218] In the above embodiment, since a tape connection mechanism 6 is provided between the unwinding mechanism 1 and the tab forming mechanism 2 , the tape connection structure facilitates manual connection of the broken electrode piece 01 to be processed.

[0219] In some embodiments, as shown in Figure 1, the pole piece processing equipment also includes a second detection component 92. Along the extension path C of the pole piece 01 to be processed, the second detection component 92 is arranged between the unwinding mechanism 1 and the pole ear forming mechanism 2. The second detection component 92 is used to obtain quality information of the pole piece 01 to be processed.

[0220] In the embodiment of the present disclosure, a second detection component 92 can be set between the unwinding mechanism 1 and the pole ear forming mechanism 2 to detect the pole piece 01 to be processed through the second detection component 92 to determine whether the pole piece 01 to be processed has quality defects. The quality information of the pole piece 01 to be processed can be obtained through the second detection component 92, and the quality information represents whether the pole piece 01 to be processed has quality defects.

[0221] For example, the second detection component 92 can be a CCD camera, etc., which can be used to obtain an image of the electrode piece 01 to be processed, so as to analyze whether there are quality defects in the electrode piece 01 to be processed. The second detection component 92 can also be used with other sensors to detect whether there are some quality defects on the electrode piece 01 to be processed.

[0222] In the above embodiment, 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 piece 01 to be processed can be obtained through the second detection component 92. When it is determined that the electrode piece 01 to be processed has quality defects, the electrode piece 01 to be processed with quality defects can be processed in time, thereby reducing the risk of unqualified electrodes entering the subsequent battery processing steps.

[0223] In some embodiments, as shown in Figure 1, the pole piece processing equipment also includes a reinforcement mechanism 7. Along the extension path C of the pole piece 01 to be processed, the reinforcement mechanism 7 is arranged on the side of the pole tab forming mechanism 2 close to the unwinding mechanism 1. The reinforcement mechanism 7 is used to prepare a reinforcement part in the pole tab area on the pole piece 01 to be processed. The pole tab area includes the area on the pole piece 01 to be processed where the pole tab is formed by cutting.

[0224] In the disclosed embodiment, in order to improve the strength of the tab formed on the electrode piece 01 to be processed, a reinforcing mechanism 7 can be provided on the side of the tab forming mechanism 2 close to the unwinding mechanism 1, so that a reinforcement portion is formed by extending the reinforcing mechanism 7 to the tab region on the electrode piece 01 to be processed. For example, the reinforcement portion can be a convex ridge perpendicular to the surface of the electrode piece 01 to be processed.

[0225] For example, the reinforcing mechanism 7 can be configured to include two reinforcing rollers, each having matching ridges and grooves on its surface. Thus, as the reinforcing rollers rotate, the tab area of ​​the electrode sheet 01 to be processed, which passes through the reinforcing rollers, is extruded with multiple ridges of uniform concave and convex shapes.

[0226] In the above embodiment, since a reinforcement mechanism 7 is provided on the side of the tab forming mechanism 2 close to the unwinding mechanism 1, a reinforcement portion can be prepared in the tab area on the pole piece 01 to be processed by the reinforcement mechanism 7, so that the tab area of ​​the pole piece 01 to be processed passing through the tab forming mechanism 2 can have higher strength.

[0227] In some embodiments, as shown in Figure 1, the pole piece processing equipment also includes a third detection component 93. Along the extension path C of the pole piece 01 to be processed, the third detection component 93 is arranged on the side of the pole ear forming mechanism 2 close to the unwinding mechanism 1. The third detection component 93 is used to detect the length of the pole piece 01 to be processed passing through the third detection component 93.

[0228] In the embodiment of the present disclosure, a third detection component 93 can be set on the side of the pole tab forming mechanism 2 close to the unwinding mechanism 1, and the third detection component 93 can be set on the extension path C of the pole piece 01 to be processed, so as to detect the length of the pole piece 01 to be processed passing through the pole tab forming mechanism 2 through the third detection component 93.

[0229] For example, the third detection assembly 93 may be a device including an encoding roller. When the electrode piece 01 to be processed passes through the third detection assembly 93, the third detection assembly 93 may detect the length of the electrode piece 01 to be processed.

[0230] In the above embodiment, since a third detection component 93 is provided on the side of the tab forming mechanism 2 close to the unwinding mechanism 1, the length of the cut pole piece 02 cut by the tab forming mechanism 2 can be detected by the third detection component 93, and the length data of the cut pole piece 02 can be obtained in time.

[0231] At the same time, the embodiments of the present disclosure also provide a battery production line, which includes the electrode processing equipment, coating equipment, battery cell winding equipment and handling equipment provided by any one of the above embodiments; wherein the coating equipment is used to coat the active slurry on the current collector to form the electrode 01 to be processed; the battery cell winding equipment is used to wind the isolation piece and the cut electrode 02 to form a battery cell; and the handling equipment is used to transport the electrode 01 to be processed to the unwinding mechanism 1.

[0232] In the disclosed embodiments, a coating device can be installed on a battery production line to coat the current collector with an active slurry. After the active slurry solidifies on the current collector, a pre-processed electrode sheet 01 can be obtained. The coating device can also be used to wind the pre-processed electrode sheet 01 to form a film roll of the pre-processed electrode sheet 01. For example, the current collector can be a metal foil or a composite current collector. The active material can be a lithium-containing phosphate, a lithium transition metal oxide, or modified compounds thereof.

[0233] In the embodiment of the present disclosure, the cell winding device can stack and wind the separator and the cut electrode 02 to obtain a cell. The separator and the cut electrode 02 are adjacent to each other, and the wound cut electrode 02 can be separated by the separator.

[0234] In the embodiment of the present disclosure, the electrode film roll to be processed 01 can be transported by a transport device to be transported to the unwinding mechanism 1 of the electrode processing equipment. The electrode film roll formed on the rewinding mechanism 5 can also be taken off by the transport device and transported to a storage location or to the next processing station.

[0235] In the above embodiment, since the electrode mechanism equipment is provided in the battery production line, the production efficiency of the electrode can be improved, and the qualified rate of the electrode processing can also be improved, thereby improving the efficiency and qualified rate of battery processing.

[0236] In addition, an embodiment of the present disclosure further provides a control method for a pole piece processing device, the pole piece processing device including an unwinding mechanism, a tab forming mechanism, a recycling mechanism, and a slitting mechanism; with reference to FIG13 , FIG13 shows a flow chart of the control method for the pole piece processing device provided by the present disclosure. As shown in FIG13 , the control method for the pole piece processing device includes the following steps S101 to S104.

[0237] S101 , in response to a processing instruction, controlling an unwinding mechanism to perform an unwinding action, so that a wound electrode to be processed carried on the unwinding mechanism is extended along an extension path.

[0238] In some embodiments, the processing instruction may be generated in response to a user operating the electrode processing equipment, or in response to the electrode to be processed being placed in place on the unwinding mechanism, or in response to the electrode film roll being removed from the rewinding mechanism. The disclosed embodiments do not limit the scenario in which the processing instruction is generated.

[0239] In some embodiments, when the electrode to be processed begins to be processed, it is necessary to first control the unwinding mechanism to perform an unwinding action. For example, the unwinding assembly carrying the wound electrode to be processed in the unwinding mechanism can be controlled to rotate at a preset speed to drive the wound electrode to be processed to rotate. This allows the wound electrode to be processed to be unfolded into a thin, long strip, thereby allowing the electrode to be processed to be extended along an extension path, that is, allowing the electrode to be processed to move sequentially along the distribution paths of the various processing mechanisms in the electrode processing equipment.

[0240] S102 , controlling the tab forming mechanism to cut the electrode piece to be processed, so as to form a tab on the electrode piece to be processed.

[0241] In some embodiments, after the electrode piece 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 piece to be processed. For example, a drive assembly in the tab forming mechanism can drive a laser cutter to move according to the contour shape of the tab, thereby cutting the electrode piece to be processed by laser, thereby cutting the tab area on the electrode piece to be processed to form the tab.

[0242] S103 , controlling the recycling mechanism to collect and store the waste generated by cutting the electrode to be processed.

[0243] In some embodiments, during the process of cutting the electrode sheet to be processed by the tab forming mechanism, there is a risk that the tab forming mechanism may fail to completely separate 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 a timely manner, there is a risk that the waste material will scrape the tab, deform the tab, or break the cut electrode sheet.

[0244] For example, while the tab forming mechanism is cutting the electrode sheet to be processed, the recycling mechanism can be simultaneously controlled to perform a recycling operation, thereby promptly removing waste material adhering to the cut electrode sheet. For example, the recycling mechanism can be configured to blow a high-velocity airflow toward the tab region of the electrode sheet to be processed, thereby using the high-speed airflow to blow waste material away from the cut electrode sheet. Simultaneously, the waste material can be transported via a pipeline to a waste storage location of the recycling mechanism for collection and storage.

[0245] S104 , controlling the cutting mechanism to cut the cut electrode piece, so that the cut electrode piece is cut into at least two cut electrode pieces.

[0246] In some embodiments, the tab forming mechanism can be used to simultaneously form two rows of tabs on both sides of the cut electrode sheet. After the cut electrode sheet reaches the slitting mechanism, the slitting mechanism can be controlled to slit the cut electrode sheet so that the cut electrode sheet is slit into two slit electrode sheets.

[0247] For example, the slitting blade in the slitting mechanism can be controlled to rotate. During the rotation of the slitting blade, the cut electrode piece passing through the middle of the slitting blade can be cut into two cut electrode pieces each with an electrode tab.

[0248] The control method of the electrode processing equipment provided by the embodiment of the present disclosure controls the unwinding mechanism to perform the unwinding action in response to the processing instruction, so that the electrode processing equipment can accurately perform each processing action, and can make the electrode to be processed wound on the unwinding mechanism unfold into a strip of electrode to be processed at a preset speed. And the tab forming mechanism is controlled to cut the electrode to be processed, so that the electrode with accurate shape and position can be formed on the cut electrode. Moreover, in the process of the tab forming mechanism cutting the electrode to be processed, the recycling mechanism is controlled to collect and store the waste, and the waste adhering to the cut electrode can be forcibly separated by the recycling mechanism to reduce the risk of the waste moving with the cut electrode, causing the electrode to be deformed, or causing the cut electrode to be broken. At the same time, the slitting mechanism is controlled to slit the cut electrode, so that the cut electrode can be slit into at least two slit electrode sheets, so that the electrode required for manufacturing the battery cell can be obtained. Therefore, the control method of the electrode processing equipment provided in the embodiment of the present disclosure can improve the production efficiency of electrode processing by controlling the electrode tab forming mechanism and the slitting mechanism to cut and slit the electrode to be processed in sequence; by controlling the recycling mechanism to forcibly separate the adhering waste materials, the adverse effects of the waste materials on the cut electrode sheets can be reduced, thereby improving the pass rate of electrode processing.

[0249] Referring to Figure 14 , Figure 14 shows a second flow chart of the control method for the electrode processing equipment provided by the present disclosure. The unwinding mechanism includes a first unwinding assembly, a second unwinding assembly, an unwinding and rewinding assembly, and a connecting assembly. Based on Figure 14 , step S101 in Figure 14 can be implemented through the following steps S1011 to S1012.

[0250] S1011, controlling the connection assembly to set a connection piece on the first electrode to be processed on one of the first unwinding assembly or the second unwinding assembly.

[0251] 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 be used up, the first electrode to be processed needs to be connected to the electrode processing equipment in a timely manner so that the electrode processing equipment can continue to process the electrode to be processed.

[0252] For example, a spare first electrode to be processed and a second electrode to be processed that is about to be used up can be connected together through 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.

[0253] In another example, the connection component may be controlled to set a connection piece on the first electrode piece to be processed. For example, the connection component may be controlled to adhere a double-sided tape to the first electrode piece to be processed.

[0254] S1012, control the unwinding and reel-changing assembly to guide the first electrode to be processed to move 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 a whole through a connecting piece.

[0255] In some embodiments, after a connecting piece is provided on the first electrode to be processed, the unwinding and reel-changing assembly can be controlled to guide the first electrode to be processed to move toward the direction close to the second electrode to be processed, and until the first electrode to be processed is abutted against the second electrode to be processed through the connecting piece, the first electrode to be processed and the second electrode to be processed will be connected into one by the double-sided tape serving as the connecting piece.

[0256] In the above embodiment, since the control connection component is used to set a connecting piece on the first electrode to be processed on one of the first unwinding component or the second unwinding component, and the unwinding and reel-changing component is controlled to guide the first electrode to be processed to move in the direction close to the second electrode to be processed, the spare first electrode to be processed and the second electrode to be processed that is about to be used up can be connected as one, so that 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, and then the electrode processing equipment can continue to 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.

[0257] Referring to Figure 15 , Figure 15 shows a third flow chart of the control method for the electrode processing equipment provided by the present disclosure. The recovery mechanism includes an air knife mechanism and a compression assembly connected via a negative pressure pipeline. Based on Figure 13 , step S103 in Figure 13 can be implemented via the following steps S1031 and S1032 .

[0258] S1031. Control the air knife mechanism to blow air toward the tab area on the electrode to be processed, so as to bring the waste into the negative pressure pipeline through the air flow.

[0259] In some embodiments, during the process of cutting the electrode to be processed, the air knife mechanism can be controlled to blow gas with a higher flow rate toward the ear area on the electrode to be processed, so that the gas with a higher flow rate can be used as a power source to separate the waste material adhering to the cut electrode from the cut electrode.

[0260] For example, the blowing direction of the air knife mechanism can be set to be toward the negative pressure pipeline, and then the waste can be brought into the negative pressure pipeline under the drive of the air flow.

[0261] S1032. Control the compression component to compress the waste material in the compression component passing through the negative pressure pipeline to reduce the volume of the waste material, and store the waste material with reduced volume.

[0262] In some embodiments, the outlet of the negative pressure line can be connected to a compression assembly, which can then be controlled to compress the collected waste. For example, the compression assembly can be controlled to perform compression when the waste reaches a preset volume, or it can be controlled to perform compression at preset time intervals, thereby compressing the waste. The waste, whose volume has been reduced by compression, can be temporarily stored in the compression assembly.

[0263] In the above embodiment, the air knife mechanism is controlled to blow air toward the tab area of ​​the electrode to be processed, and this airflow can be used as a power source to facilitate the separation of adhering waste material from the cut electrode. Simultaneously, the compression assembly is controlled to compress the collected waste material, reducing its volume and facilitating its storage and subsequent processing.

[0264] 16, which shows a fourth flow chart of the control method for the electrode processing equipment provided by the present disclosure. The electrode processing equipment further includes a winding mechanism and a driving mechanism. The control method for the electrode processing equipment further includes steps S201 to S202.

[0265] S201, controlling the winding mechanism to wind up the cut electrode sheets to form an electrode film roll.

[0266] In some embodiments, after completing all processing steps of the electrode to be processed and obtaining the required slit electrode, the winding mechanism can be controlled to only wind the slit electrode, so that the strip-shaped slit electrode can be wound into an electrode film roll.

[0267] S202. Control the driving mechanism to drive the cut pole piece and / or the split pole piece 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 split pole piece is greater than the tension on the cut pole piece.

[0268] In some embodiments, the driving mechanism can be controlled to drive the cut pole pieces or the split pole pieces to move, so that the pole pieces to be processed can continuously enter the various processing mechanisms.

[0269] For example, the torque of the driving mechanism can be set to be greater than the torque of the unwinding mechanism, so that the electrode pieces to be processed and / or the cut electrode pieces and / or the slit electrode pieces located between the driving mechanism and the unwinding mechanism are subjected to a certain tension. At the same time, the torque of the rewinding mechanism can be set to be greater than the torque of the driving mechanism, so that the tension of the slit electrode pieces located between the rewinding mechanism and the driving mechanism is greater than the tension of the cut electrode pieces.

[0270] In the above embodiment, since the winding mechanism is controlled to wind the slit electrode sheets, the strip-shaped slit electrode sheets can be formed into electrode sheet film rolls, which facilitates the storage and transportation of the electrode sheet film rolls. At the same time, by controlling the winding mechanism and the driving mechanism to rotate at different torques, the electrode sheet film rolls can be subjected to greater tension, which is conducive to more neat and regular winding of the electrode sheet film rolls; and the cut electrode sheets and the electrode sheets to be processed can be subjected to less tension, which can reduce the risk of the cut electrode sheets and the electrode sheets to be processed breaking.

[0271] The above embodiments are intended only to illustrate the technical solutions of the present disclosure, and are not intended to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they may modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. Such modifications or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the various embodiments of the present disclosure, and are intended to be encompassed by the specification of the present disclosure. In particular, the various technical features described in the various embodiments may be combined in any manner, as long as there are no structural conflicts.

Claims

1. A pole piece processing device, comprising: A unwinding mechanism for carrying the wound pole piece to be processed; An ear forming mechanism arranged on the extension path of the pole piece to be processed for cutting the pole piece to be processed; A recovery mechanism arranged on the extension path of the cut pole piece and on the side of the ear forming mechanism away from the unwinding mechanism, the recovery mechanism being used to remove the waste formed after cutting the pole piece to be processed; A slitting mechanism. Along the extension path of the cut pole piece, the slitting mechanism is arranged on the side of the recovery mechanism away from the ear forming mechanism. The slitting mechanism is used to slit the cut pole piece; the slitting mechanism includes a first support base, a second support base, a first cutter shaft, a second cutter shaft, slitting knives and an adjustment assembly; wherein, in the radial direction along the first cutter shaft, the first support base and the second support base are connected; the first cutter shaft is rotatably arranged on the first support base, the second cutter shaft is rotatably arranged on the second support base, and the first cutter shaft and the second cutter shaft are arranged in the same direction; the slitting knives adapted to each other are respectively arranged on the first cutter shaft and the second cutter shaft; The adjustment assembly is arranged between the first support base and the second support base, and is used to adjust the distance between the first support base and the second support base in the radial direction along the first cutter shaft.

2. The pole piece processing equipment according to claim 1, wherein, The recovery mechanism includes an air knife mechanism, and the air knife mechanism includes an air knife support, an air knife roller shaft and an air knife body; wherein, the air knife roller shaft is rotatably installed on the air knife support, and the cut pole piece moves while adhering to the air knife roller shaft; the air knife body is installed on the air knife support, and the air knife body has an air outlet and an air inlet communicated with each other. In the axial direction along the air knife roller shaft, the air outlet faces the ear on the cut pole piece from the center of the cut pole piece, and the air inlet is used to connect with an air source.

3. The pole piece processing equipment according to claim 2, wherein, The air knife mechanism further includes a guiding member, a profiling cover and a negative pressure pipeline; wherein, the guiding member is sleeved on the air knife roller shaft in the radial direction along the air knife roller shaft and is located on the side of the ear on the air knife roller shaft away from the air outlet; the profiling cover is installed on the air knife support and is opposite to the guiding member. The profiling cover has a suction port and a discharge port. The shape of the suction port is adapted to the shape of the guiding member and is located on the flow path of the air flow blown out from the air outlet. The discharge port is connected to one end of the negative pressure pipeline.

4. The pole piece processing equipment according to claim 3, wherein, The recovery mechanism further includes a compression assembly connected to the end of the negative pressure pipeline away from the profiling cover, and the compression assembly is used to compress and accommodate the waste.

5. The pole piece processing equipment according to any one of claims 2 to 4, wherein, The pole piece processing device further includes a first detection assembly. Along the extension path of the cut pole piece, the first detection assembly is arranged on the side of the air knife mechanism away from the ear forming mechanism. The first detection assembly is used to obtain the image data of the cut pole piece, and the image data includes the waste area information of the cut pole piece.

6. The pole piece processing equipment according to claim 5, wherein, The pole piece processing equipment further includes a first marking component. Along the extension path of the cut pole piece, the first marking component is arranged 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 further configured to send a marking instruction to the first marking component according to the waste area information, and the marking instruction is used to control the first marking component to mark the waste area on the cut pole piece.

7. The pole piece processing equipment according to any one of claims 1 to 6, wherein, The adjustment component includes an adjustment part and a locking part; the adjustment part is slidably arranged between the first support seat and the second support seat, the locking part is installed on the first support seat or the second support seat, the locking part abuts against the adjustment part, and during the process of the locking part moving relative to the first support seat in the direction of approaching or departing from the adjustment part, the locking part can drive the adjustment part to move relative to the first support seat to adjust the distance between the first support seat and the second support seat.

8. The pole piece processing equipment according to any one of claims 1 to 6, wherein, The slitting mechanism further includes a slitting positioning component, and the slitting positioning component is installed on the first support seat and / or the second support seat, and the slitting positioning component is used to limit the position of the second support seat relative to the first support seat.

9. The pole piece processing equipment according to any one of claims 1 to 6, wherein, The slitting mechanism further includes a measuring part, one end of the measuring part is connected to the first support seat, and the other end is connected to the second support seat, and the measuring part is used to measure the distance between the first support seat and the second support seat.

10. The pole piece processing equipment according to any one of claims 1 to 6, wherein, The recovery mechanism further includes a cleaning mechanism. Along the extension path of the slit pole piece, the cleaning mechanism is arranged on the side of the slitting mechanism away from the unwinding mechanism. The cleaning mechanism is connected to the compression component. The cleaning mechanism is used to clean the impurities on the slit pole piece, and the compression component is used to compress and accommodate the impurities.

11. The pole piece processing equipment according to any one of claims 1 to 6, wherein, The pole piece processing equipment further includes a plurality of driving mechanisms, and the plurality of driving mechanisms are arranged on the extension path of the cut pole piece, and the driving mechanisms are used to drive the cut pole piece or the slit pole piece to move away from the pole ear forming mechanism.

12. The pole piece processing equipment according to any one of claims 1 to 11, wherein, The pole piece processing equipment further includes a winding mechanism. Along the extension path of the slit pole piece, the winding mechanism is arranged on the side of the slitting mechanism away from the recovery mechanism, and the winding mechanism is used to wind the slit pole piece.

13. The pole piece processing equipment according to claim 12, wherein, The winding mechanism includes a first winding component, a second winding component and a winding roll-changing component; wherein, both the first winding component and the second winding component are arranged on the extension path of the slit pole piece, the winding roll-changing component is arranged between the first winding component and the second winding component, and the winding roll-changing component is used to guide the slit pole piece to move towards the first winding component or the second winding component, so as to wind the slit pole piece through the first winding component or the second winding component.

14. The pole piece processing equipment according to claim 13, wherein, The winding mechanism further includes a shaping component, which is arranged between the first winding component and the second winding component. The shaping component is used to set a shaping piece on the pole piece film roll, so as to fix the cut edge at the end of the pole piece film roll through the shaping piece. The pole piece film roll is formed by winding the slit pole piece through the first winding component or the second winding component.

15. The pole piece processing equipment according to claim 14, wherein, 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 cut edge at the end on the pole piece film roll, and send a positioning instruction to the shaping component according to the position information. The positioning instruction is used to control the shaping component to set the shaping piece.

16. The pole piece processing equipment according to any one of claims 13 to 15, wherein, The winding mechanism further includes a pressing component, and the pressing component is arranged at positions corresponding to the first winding component and the second winding component respectively. The pressing component is used to press against the pole piece film roll on the first winding component and the second winding component.

17. The pole piece processing equipment according to any one of claims 12 to 16, wherein, On the extension path of the to-be-processed pole piece, the unwinding mechanism and the winding mechanism are located on the first side of the to-be-processed pole piece, and the recovery mechanism, the pole ear forming mechanism and the slitting mechanism are located on the second side of the to-be-processed pole piece. The first side and the second side are opposite sides of the to-be-processed pole piece.

18. The pole piece processing equipment according to any one of claims 1 to 17, wherein, The unwinding mechanism includes a first unwinding component, a second unwinding component and an unwinding roll-changing component. Among them, the first unwinding component and the second unwinding component are both arranged on the extension path of the to-be-processed pole piece, and the unwinding roll-changing component is arranged between the first unwinding component and the second unwinding component. The unwinding roll-changing component is used to guide the to-be-processed pole piece on the first unwinding component to move closer to the to-be-processed pole piece on the second unwinding component, or guide the to-be-processed pole piece on the second unwinding component to move closer to the to-be-processed pole piece on the first unwinding component.

19. The pole piece processing equipment according to claim 18, wherein, The unwinding mechanism further includes a connecting component, which is arranged between the first unwinding component and the second unwinding component. The connecting component is used to set a connecting piece on the to-be-processed pole piece on the first unwinding component or the second unwinding component. The connecting piece is used to connect the to-be-processed pole piece on the first unwinding component and the to-be-processed pole piece on the second unwinding component.

20. The pole piece processing equipment according to claim 18 or 19, wherein, The unwinding mechanism further includes an unwinding detection piece, which is electrically connected to the first unwinding component and the second unwinding component respectively. The unwinding detection piece is used to detect the lateral displacement position of the to-be-processed pole piece on the extension path, and send a deviation correction instruction to the first unwinding component or the second unwinding component according to the lateral displacement position. The deviation correction instruction is used to control the first unwinding component or the second unwinding component to move in the axial direction of the first unwinding component.

21. The pole piece processing equipment according to any one of claims 1 to 20, wherein, The pole piece processing equipment further includes a tape connecting mechanism, which is arranged between the unwinding mechanism and the pole ear forming mechanism along the extension path of the to-be-processed pole piece. The tape connecting mechanism is used to connect the broken to-be-processed pole piece.

22. The pole piece processing equipment according to any one of claims 1 to 21, wherein, The pole piece processing equipment further includes a second detection component. Along the extension path of the to-be-processed pole piece, the second detection component is arranged between the unwinding mechanism and the pole ear forming mechanism, and the second detection component is used to obtain the quality information of the to-be-processed pole piece.

23. The pole piece processing equipment according to any one of claims 1 to 22, wherein, The pole piece processing equipment further includes a strengthening mechanism. Along the extension path of the to-be-processed pole piece, the strengthening mechanism is arranged on the side of the pole ear forming mechanism close to the unwinding mechanism, and the strengthening mechanism is used to prepare a strengthening part in the pole ear area on the to-be-processed pole piece, and the pole ear area includes the area on the to-be-processed pole piece where the pole ear is formed by cutting.

24. The pole piece processing equipment according to any one of claims 1 to 23, wherein, The pole piece processing equipment further includes a third detection component. Along the extension path of the to-be-processed pole piece, the third detection component is arranged on the side of the pole ear forming mechanism close to the unwinding mechanism, and the third detection component is used to detect the length of the to-be-processed pole piece passing through the third detection component.

25. A battery production line, comprising: The pole piece processing equipment according to any one of claims 1 to 24; A coating equipment, which is used to coat the active slurry on the current collector to form the to-be-processed pole piece; A battery core winding equipment, which is used to wind the separator and the cut pole piece to form a battery core; A handling equipment, which is used to transport the to-be-processed pole piece onto the unwinding mechanism.

26. A control method for a pole piece processing equipment. The pole piece processing equipment includes an unwinding mechanism, a pole ear forming mechanism, a recycling mechanism and a slitting mechanism. The slitting mechanism includes a first support base, a second support base, a first cutter shaft, a second cutter shaft, a slitting knife and an adjustment component. The control method for the pole piece processing equipment includes: Controlling the adjustment component to move relative to the first support base and / or the second support base, so that the adjustment component drives the first support base and the second support base to move in the radial direction of the first cutter shaft; Responding to a processing instruction, controlling the unwinding mechanism to perform an unwinding action, so that the wound to-be-processed pole piece carried on the unwinding mechanism unfolds along the extension path; Controlling the pole ear forming mechanism to cut the to-be-processed pole piece, so that pole ears are formed on the to-be-processed pole piece; Controlling the recycling mechanism to collect and store the waste materials formed by cutting the to-be-processed pole piece; Controlling the slitting mechanism to slit the cut pole piece, so that the cut pole piece is slit into at least two slit pole pieces.

27. The control method of the pole piece processing equipment according to claim 26, wherein, The unwinding mechanism includes a first unwinding component, a second unwinding component, an unwinding roll changing component and a connecting component. The controlling the unwinding mechanism to perform an unwinding action, so that the wound to-be-processed pole piece carried on the unwinding mechanism can unfold along the extension path, includes: Controlling the connecting component to set a connecting piece on the first to-be-processed pole piece on one of the first unwinding component or the second unwinding component; Control the unwinding and rewinding component to guide the first to-be-processed pole piece to move towards the second to-be-processed pole piece on the other one of the first unwinding component or the second unwinding component until the first to-be-processed pole piece is connected to the second to-be-processed pole piece as a whole through the connecting piece.

28. The control method of the pole piece processing equipment according to claim 26 or 27, wherein, The recovery mechanism includes an air knife mechanism and a compression component connected through a negative pressure pipeline; controlling the recovery mechanism to collect and store the waste formed by cutting the to-be-processed pole piece includes: Controlling the air knife mechanism to blow air towards the tab area on the to-be-processed pole piece so as to bring the waste into the negative pressure pipeline through the air flow; Controlling the compression component to compress the waste passing through the negative pressure pipeline into the compression component to reduce the volume of the waste and store the waste with reduced volume.

29. The control method of the pole piece processing equipment according to any one of claims 26 to 28, wherein, The pole piece processing equipment further includes a winding mechanism and a driving mechanism; The control method of the pole piece processing equipment includes: Controlling the winding mechanism to wind the slit pole piece to form a pole piece film roll; Controlling the driving mechanism to drive the cut pole piece and / or the slit pole piece to move towards the winding mechanism, wherein the winding mechanism and the driving mechanism are controlled to rotate with different torques so that the tension received by the slit pole piece is greater than the tension received by the cut pole piece.

Images