Composite sheet stacking apparatus and sheet stacking system

Abstract

The application relates to the technical field of batteries, in particular to a composite sheet stacking device and a stacking system. The composite sheet stacking device comprises sequentially arranged sheet manufacturing devices, a composite device, a cutting device and a conveying device. The sheet manufacturing device comprises a first blanking assembly, a second blanking assembly and a diaphragm blanking assembly. One side of the conveying device forms a stacking area, the stacking area is provided with at least one processing station, and the processing station at least comprises a sheet taking position and a stacking position. The stacking device further comprises a stacking mechanism arranged in the stacking area, and the number of the stacking mechanisms is matched with the number of the processing stations. The composite sheet stacking device provided by the application can increase or decrease the number of the processing stations and the number of the stacking mechanisms according to the planned production capacity and the actual production efficiency, greatly optimizes the production capacity and the efficiency of the composite sheet stacking device without adjusting the running speed of the equipment, breaks through the processing efficiency of the existing stacking device, realizes higher stacking production efficiency, and reduces the production cost of the thermal composite stacking production mode.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a composite wafer stacking device and stacking system. Background Technology

[0002] Currently, lithium battery production is mainly divided into two methods: winding and stacking. Compared to winding, stacking produces cells with higher energy density and better quality, but with lower production efficiency and higher production costs. The stacking process, as the key step in the stacking production method, largely determines the production efficiency and product quality of stacked lithium batteries.

[0003] The existing hot-composite mass production equipment uses a method where the negative electrode strip is first cut into sheets and then combined with the upper and lower layers of separator strips to form a composite strip. The composite strip is then hot-cut by the separator to form a separator-negative electrode-separator negative electrode composite unit. This negative electrode composite unit is then conveyed to the stacking area via a belt conveyor with positive electrode sheets cut from the positive electrode strip. The positive and negative electrodes are then stacked alternately to form an electrode assembly. Its disadvantages are: 1) The equipment has low production efficiency and higher production costs compared to winding. 2) Based on the existing solutions, improving equipment efficiency by increasing the speed of mechanical operation presents problems such as high technical difficulty, high cost, immature technology of key mechanisms, and difficulty in debugging. Utility Model Content

[0004] The purpose of this application is to provide a composite wafer stacking device and stacking system, so as to solve to a certain extent the technical problems that most existing stacking devices can only improve efficiency by increasing the operating speed of the device, which are technically difficult and difficult to debug.

[0005] This application provides a composite sheet stacking device, including: a sheet making device, a laminating device, a cutting device and a conveying device arranged in sequence; the sheet making device includes: a first feeding component, a second feeding component and a diaphragm feeding component, the first feeding component and the second feeding component are respectively spaced apart from the laminating device, and the diaphragm feeding component is spaced apart from the second feeding component; One side of the conveying device forms a stacking area, and the stacking area is provided with at least one processing station, the processing station including at least a sheet picking station and a sheet stacking station; The composite sheet stacking equipment also includes a stacking mechanism, which is disposed in the stacking area, and the number of stacking mechanisms is adapted to the number of processing stations.

[0006] In the above technical solution, the stacking mechanism further includes: Drive components; A turntable connected to the drive component; the turntable is provided with the processing station; The picking component is equipped with a picking head, which can switch positions between the conveying device and the processing station. In any of the above technical solutions, the processing station further includes a buffer position, a wafer picking position, a correction position, and a wafer stacking position that are distributed circumferentially on the surface of the turntable; the pickup head can switch positions between the conveying device, the wafer picking position, the correction position, and the wafer stacking position.

[0007] In any of the above technical solutions, the stacking mechanism further includes: Fixing part; The pickup unit is rotatably disposed on the fixed part, and the pickup unit can switch positions between the conveying device, the picking position and the stacking position.

[0008] In any of the above technical solutions, the conveying device further includes: A conveyor line is disposed on the side of the cutting device; A buffer hopper is located on the side of the conveyor line near the stacking area.

[0009] In any of the above technical solutions, the composite wafer stacking device further includes: A hot pressing assembly, the hot pressing assembly including at least one hot press; A transfer conveyor line is provided at an interval from the hot pressing assembly; A transfer device is disposed between the transfer conveyor line and the hot pressing assembly; The finished product feeding assembly is arranged at an interval from the hot pressing assembly.

[0010] In any of the above technical solutions, the first feeding assembly is further used to feed the first electrode sheet to the composite device. The first feeding assembly includes a first feeding roller and a first cutter that are spaced apart along the feeding direction of the first electrode sheet. The second feeding assembly is used to feed a second electrode sheet with the opposite polarity to the first electrode sheet into the composite device. The second feeding assembly includes a second feeding roller and a second cutter that are spaced apart along the feeding direction of the second electrode sheet. The first feeding component and the second feeding component operate simultaneously; or one of the first feeding component and the second feeding component operates alone.

[0011] In any of the above technical solutions, the diaphragm feeding assembly further includes a first diaphragm feeding assembly and a second diaphragm feeding assembly. Both the first diaphragm feeding assembly and the second diaphragm feeding assembly are capable of releasing diaphragm material strips. Before the second electrode enters the composite device, the first diaphragm feeding assembly is capable of attaching the diaphragm material strips to one side surface of the second electrode, and the second diaphragm feeding assembly is capable of attaching the diaphragm material strips to the other side surface of the second electrode.

[0012] In any of the above technical solutions, the composite sheet stacking equipment further includes an electrostatic adsorption platform, which is disposed between the diaphragm feeding assembly and the composite device. This application also provides a lamination system, including the composite lamination equipment described in any of the above technical solutions, and thus has all the beneficial technical effects of the composite lamination equipment, which will not be repeated here.

[0013] Compared with the prior art, the beneficial effects of this application are as follows: The composite sheet stacking equipment provided in this application includes a sheet-making device, a laminating device, a cutting device, and a conveying device arranged in sequence. The sheet-making device includes a first feeding assembly, a second feeding assembly, and a diaphragm feeding assembly. The first feeding assembly and the second feeding assembly are respectively spaced apart from the laminating device, and the diaphragm feeding assembly is spaced apart from the second feeding assembly. A stacking area is formed on one side of the conveying device. The stacking area is provided with at least one processing station, and the processing station includes at least a sheet-picking station and a sheet-stacking station. The composite sheet stacking equipment also includes a stacking mechanism, which is provided in the stacking area. The number of stacking mechanisms is adapted to the number of processing stations.

[0014] The composite lamination equipment provided in this application can increase or decrease the number of processing stations and the number of lamination mechanisms according to the planned capacity and actual production efficiency. It can greatly optimize the capacity and efficiency of the composite lamination equipment without adjusting the operating speed of the equipment, break through the processing efficiency of existing lamination equipment, achieve higher lamination production efficiency, and reduce the production cost of thermal composite lamination production. The stacking system provided in this application includes the composite sheet stacking equipment described above. Therefore, by configuring a corresponding number of composite sheet stacking equipment, the production efficiency of this stacking system is greatly improved, and the equipment can be changed without stopping the machine, which significantly improves the utilization rate of this stacking system. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the composite wafer stacking device provided in Embodiment 1 of this application; Figure 2 This is a partial structural schematic diagram of the composite wafer stacking device provided in Embodiment 2 of this application; Figure 3 This is a schematic diagram of the stacking process of the composite wafer stacking device provided in the embodiments of this application.

[0017] Figure label: 1-Sheet making device, 101-First feeding assembly, 102-Second feeding assembly, 103-First diaphragm feeding assembly, 104-Second diaphragm feeding assembly, 105-First cutter, 106-Second cutter, 2-Composite device, 3-Cutting device, 4-Stacking mechanism, 401-Turntable, 402-Sheet picking position, 403-Stacking position, 404-Buffer position, 405-Correction position, 406-Fixing part, 407-Pick-up part, 5-Conveying device, 6-Buffer hopper, 7-Hot press, 8-Electrostatic adsorption platform, 9-Transfer device, 10-Transfer conveyor line, 11-Feeding device, 12-Carrying tray, 13-Adhesive application station, 14-NG pull belt, A-Double-sheet composite unit, B-Single-sheet composite unit, C-Electrode group, D-Positive electrode sheet, E-Negative electrode sheet, F-Diaphragm. Detailed Implementation

[0018] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0019] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0020] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] The following reference Figures 1 to 3 This application describes the composite wafer stacking apparatus and stacking system according to embodiments.

[0024] Firstly, this application provides two types of composite wafer stacking equipment, see [link to relevant documentation]. Figure 1 and Figure 2 As shown, Embodiment 1 of this application provides a composite sheet stacking device. This composite sheet stacking device includes a sheet-making device 1, a laminating device 2, a cutting device 3, and a conveying device 5 arranged sequentially. A stacking area is formed on one side of the conveying device 5. The sheet-making device 1 includes a first feeding assembly 101, a second feeding assembly 102, and a diaphragm feeding assembly arranged at intervals. This composite sheet stacking device also includes a stacking mechanism 4, with at least one stacking mechanism 4 disposed in the stacking area. The sheet-making device 1 includes a first feeding assembly 101, a second feeding assembly 102, a first diaphragm feeding assembly 103, and a second diaphragm feeding assembly 104. The first feeding assembly 101 and the second feeding assembly 102 are arranged at intervals. The first feeding assembly 101 supplies a first electrode sheet and conveys it to the laminating device 2, while the second feeding assembly 102 supplies a second electrode sheet and conveys it to the laminating device 2. The first diaphragm feeding assembly 103 and the second diaphragm feeding assembly 104 are distributed on both sides of the second feeding assembly 102. The first diaphragm feeding assembly 103 is used to attach the diaphragm material strip to one side surface of the second electrode, and the second diaphragm feeding assembly 104 is used to attach the diaphragm material strip to the other side surface of the second electrode. It should be noted that in this embodiment, the first electrode and the second electrode have opposite polarities. Optionally, the first electrode is specifically a positive electrode D, and the second electrode is specifically a negative electrode E.

[0025] The positive electrode D and the negative electrode E with the attached separator strip can be fed together into the composite device 2 for composite processing. Subsequently, the separator strip is cut by the cutting device 3 to form a two-piece composite unit A with a structure of positive electrode D-separator F-negative electrode E-separator F. Furthermore, it should be noted that the first feeding assembly 101 and the second feeding assembly 102 are each driven independently. They can operate simultaneously, or the first feeding assembly 101 can be stopped while the second feeding assembly 102 operates independently, thereby forming a single-piece composite unit B with a structure of separator F-negative electrode E-separator F. Specifically, the first feeding assembly 101 includes a first feeding roller and a first cutter 105. The first feeding roller is wound with a roll of material for making the first electrode sheet. Optionally, the positive electrode roll on the first feeding roller is driven by a motor or other driving component, causing the first feeding roller to rotate and releasing the positive electrode roll one revolution at a time. When the positive electrode roll is conveyed to the first cutter 105, the first cutter 105 cuts the positive electrode roll into several positive electrode sheets D. Preferably, the first cutter 105 is a conventional fixed-cut flying cutter.

[0026] Optionally, the first feeding assembly 101 further includes a defect detection device, which may specifically be a CCD camera, and is disposed between the first feeding roller and the first cutter 105. Preferably, the number of defect detection devices is at least two, with at least one defect detection device disposed on one side of the positive electrode roll and at least one defect detection device disposed on the other side of the positive electrode roll. The defect detection devices are capable of detecting foreign objects and defects in the positive electrode roll.

[0027] Optionally, the first feeding assembly 101 further includes a correction device. The correction device can act on the first feeding roller. By driving the first feeding roller and the positive electrode roll wound on the first feeding roller to move axially, the correction device can adjust the position of the positive electrode roll, thereby adjusting the position of the positive electrode roll being cut into positive electrode sheets D, so as to achieve the correction effect.

[0028] Further, the second feeding assembly 102 includes: a second feeding roller and a second cutter 106. The second feeding roller is wound with a roll of material for making the second electrode sheet. Optionally, the roll of material on the second feeding roller is a negative electrode roll. When the second feeding roller rotates and unwinds, the negative electrode roll can be released. After the negative electrode roll is conveyed to the second cutter 106, the second cutter 106 winds the negative electrode and cuts it into several negative electrode sheets E. Optionally, the second feeding assembly 102 also includes a deviation correction device, which acts on the second feeding roller; a defect detection device is also provided between the second feeding roller and the second cutter 106.

[0029] The first diaphragm feeding assembly 103 includes a first roller on which a diaphragm material strip is wound. The diaphragm material strip is disposed on one side of each negative electrode E so that the diaphragm material strip is attached to one side of all negative electrode E. The second diaphragm feeding assembly 104 includes a second roller on which a diaphragm material strip is wound. The diaphragm material strip is disposed on the other side of each negative electrode E so that the diaphragm material strip is attached to the other side of each negative electrode E, thereby forming a composite unit material strip with a structure of diaphragm material strip-negative electrode E-diaphragm material strip, and multiple negative electrode E are arranged at intervals between the two layers of diaphragm material strip.

[0030] Furthermore, the composite device 2 includes a composite roller with a composite space. The positive electrode sheet D, cut by the first cutter 105, and the negative electrode sheet E, cut by the second cutter 106, are composited within the composite space to form a composite strip with a structure of positive electrode sheet D - separator strip - negative electrode sheet E - separator strip in a continuous state. The composite device 2 also includes a conveyor roller that drives the composite strip to the cutting device 3. Preferably, the composite device 2 is equipped with a preheating component that can act on the composite space to change the temperature within the composite space.

[0031] Optionally, the preheating component can also be set outside the inlet of the composite device 2, and the preheating component is set between the electrostatic adsorption platform 8 and the composite device 2. After the negative electrode sheet E and the membrane strips on both sides are electrostatically adsorbed together, they are first preheated by the preheating component, so that the negative electrode sheet E and the membrane strips on both sides are fixed together by a first thermal composite. Then, together with the positive electrode sheet D, they enter the composite device 2 for a second thermal composite to form a double composite strip.

[0032] Optionally, the composite sheet stacking equipment further includes an electrostatic adsorption platform 8. Along the conveying direction of the positive electrode sheet D and the negative electrode sheet E, the electrostatic adsorption platform 8 is located behind the composite device 2, and is situated between the first diaphragm feeding assembly 103 and the composite device 2, and between the second diaphragm feeding assembly 104 and the composite device 2. After the second cutter 106 cuts the negative electrode roll into several negative electrode sheets E, each negative electrode sheet E is conveyed to the electrostatic adsorption platform 8 along with the diaphragm strips on both sides at a fixed spacing. Electrostatic adsorption fixes each negative electrode sheet E between the two layers of diaphragm strips. Preferably, the first roller and the second roller are respectively equipped with a correction component. The diaphragm strips on the first roller and the second roller are both subjected to tension control, correction, static electricity removal, and flattening treatment before being sent to the electrostatic adsorption platform to prevent wrinkles in the diaphragm strips. During the feeding and negative electrode sheet E fabrication process of the second feeding assembly 102, the first feeding assembly 101 can be in a stopped state or operate synchronously with the second feeding assembly 102. Optionally, a buffer roller is provided between the first feeding roller and the first cutter 105. When both the first feeding assembly 101 and the second feeding assembly 102 are in operation, the positive electrode roll is released after correction. After tension control, foreign object control, defect detection, and secondary correction of the released positive electrode roll, the positive electrode roll passes through the buffer roller and is cut into sheets by the first cutter 105 and then conveyed to the composite space equipped with a preheating assembly. In the composite space, each positive electrode sheet D and one negative electrode sheet E in the composite strip are positioned with their centers aligned. After being preheated, the positive electrode sheet D, the separator strip, and the negative electrode sheet E fed into the preheating assembly are composited and fixed by the composite roller to form a double-sheet composite unit strip of positive electrode sheet D-separator strip-negative electrode sheet E-separator strip.

[0033] When the first feeding component 101 is in a stopped state and only the second feeding component 102 is operating, the second feeding roller, the first diaphragm feeding component 103 and the second diaphragm feeding component 104 continue to operate to produce a single composite unit material strip with the structure of diaphragm material strip-negative electrode sheet E-diaphragm material strip. The single composite unit B material strip is cut into pieces by the cutting device 3 to form a single composite unit B with the structure of diaphragm F-negative electrode sheet E-diaphragm F.

[0034] Furthermore, the cutting device 3 specifically includes a conventional diaphragm hot cutter. The aforementioned double-sheet composite unit A strip is fed to the cutting device 3 and cut to form a double-sheet composite unit A with a structure of positive electrode D-diaphragm F-negative electrode E-diaphragm F. Preferably, the cutting position for the double-sheet composite unit A strip is the center position of the distance between adjacent negative electrode E. Finally, the manufactured double-sheet composite unit A is sent to the conveying device 5 described below for later use.

[0035] It should be noted that, as described above, the above describes the case where the separator material strip is attached to both sides of the negative electrode sheet E by the separator feeding assembly. In another case of this embodiment, when the first electrode sheet is a negative electrode sheet and the second electrode sheet is a positive electrode sheet, the first feeding assembly 101 produces several negative electrode sheets E, the second feeding assembly 102 produces several positive electrode sheets D, and the separator material strip is attached to both sides of each positive electrode sheet D by the separator feeding assembly. This is fully understandable to those skilled in the art. Based on this, if the first feeding assembly 101 and the second feeding assembly 102 operate simultaneously, the sheet-making device 1 can produce several negative electrode sheets E and a single-piece unit material strip with the structure of separator material strip-positive electrode sheet D-separator material strip. The negative electrode sheet E and the single-piece unit material strip enter the composite device 2 together, and after the thermal composite action of the composite device 2 and the cutting action of the cutting device 3, a double-piece composite unit with the structure of negative electrode sheet E-separator F-positive electrode sheet D-separator F is obtained. When the first feeding component 101 stops and only the second feeding component 102 operates, the sheet-making device 1 can produce a single-piece unit strip with a structure of separator strip-positive electrode D-separator strip. This single-piece unit strip is then processed by the composite device 2 and the cutting device 3 to form a single-piece composite unit with a structure of separator F-positive electrode D-separator F.

[0036] Furthermore, the conveying device 5 includes a conveyor line and a buffer hopper 6. Specifically, the conveyor line can be a belt conveyor or a magnetic levitation conveyor line, which are common in the prior art.

[0037] Optionally, the conveying device 5 is equipped with a buffer hopper 6, which is located on the side of the conveyor line and adjacent to the cutting device 3. The buffer hopper 6 is used to separately store a certain number of double-piece composite units A and a certain number of single-piece composite units B.

[0038] Optionally, the conveying device 5 further includes a size detection device and a defect detection device, both of which are located on the conveyor line to perform corresponding inspections on the double-piece composite unit A or single-piece composite unit B transferred to the conveyor line. Preferably, the conveying device 5 also includes a rejection device, which is located on the conveyor line. Based on the inspection results of the size detection device and the defect detection device, qualified and defective products can be evaluated. The rejection device removes defective products. After inspection, defective products are rejected and foreign objects are removed. Qualified products are collected and buffered for stacking and use.

[0039] Furthermore, a stacking area is formed on one side of the conveyor line, and at least one stacking mechanism 4 is provided in the stacking area. Each stacking mechanism 4 is provided with a take-up position 402 and a stacking position 403. By increasing or decreasing the number of stacking mechanisms 4, the number of take-up positions 402 and stacking positions 403 can be adaptively adjusted to match the production capacity of the film making device 1, so that the production capacity and efficiency of this composite film stacking equipment can be greatly improved without adjusting the operating speed of each device.

[0040] Specifically, the stacking mechanism 4 includes a driving component, a turntable 401, and a picking component. The driving component can be a motor, used to drive the turntable 401 to rotate. The picking component is a turntable-type stacking robot, used to pick up and transport the stacked units. The upper surface of the turntable 401 is provided with a buffer position 404, a picking position 402, a correction position 405, and a stacking position 403. These four processing positions are evenly spaced along the circumference of the turntable 401. After the driving component drives the turntable 401 to rotate, the picking head of the picking component switches positions relative to the four processing positions one by one. Optionally, the picking head is equipped with a suction plate, which can pick up a certain number of double-layer composite units A or single-layer composite units B at a time. During operation of this composite stacking equipment, the picking component uses negative pressure to pick up the conveying unit at the picking position 402. Place the double-layer composite unit A on the 5th layer and transport it to the correction position 405. A camera is installed above the correction position 405 to take pictures and position the double-layer composite unit A. After the suction plate is lifted by the pickup head, the correction table moves to correct the composite unit on the correction table. Then, the pickup component uses negative pressure adsorption to transport the corrected double-layer composite unit A to the stacking position 403. When a certain number of layers are reached, the pickup component grabs a single-layer composite unit B collected earlier from the buffer bin 6 and stacks it to the stacking position 403 to form an electrode group.

[0041] Furthermore, this composite lamination equipment also includes a hot pressing assembly, which, along with the cutting device 3, is located at both ends of the conveying device 5. The hot pressing assembly includes at least one hot press 7, each of which can hot press at least one electrode group C at a time. The number of hot presses 7 can be configured according to the production capacity and efficiency of the lamination process. The electrode group C obtained after lamination by the lamination mechanism 4 is conveyed to the hot pressing assembly for hardening.

[0042] Furthermore, this composite lamination equipment also includes a transfer conveyor line 10 and a transfer device 9. Specifically, the transfer device 9 can be a robotic arm used for loading the electrode assembly C before hot pressing and unloading the electrode assembly C after hot pressing. The transfer device 9 is located at one end of the conveyor line near the hot pressing assembly.

[0043] Preferably, the composite lamination equipment further includes a transfer conveyor line 10, which can specifically be a belt conveyor line. The transfer conveyor line 10 is located on the side of the transfer device 9, which is situated between the transfer conveyor line 10 and the hot pressing assembly. The electrode assembly C obtained by the lamination mechanism 4 is first transferred to the transfer conveyor line 10. This transfer process can be achieved by configuring a robotic arm to grip it. Then, the transfer device 9 can pick up the electrode assembly C on the transfer conveyor line 10 individually or in multiples at once, transferring it to the hot pressing area of ​​each hot press 7 for hot pressing to pressurize and heat the assembly, thereby obtaining the finished electrode assembly. During the process of the transfer device 9 gripping and placing the electrode assembly C onto the transfer conveyor line 10, the transfer device 9 shuttles at the bottom of the lamination table to deliver the electrode assembly C. This process does not affect the operation of the lamination table, which can continuously laminate.

[0044] Optionally, the transfer conveyor line 10 includes a loading section and a unloading section. The electrode assembly C conveyed by the conveyor line is transferred to the loading section so as to supply the electrode assembly C to the transfer device 9. The finished electrode assembly, which has been hot-pressed by the hot pressing assembly, is placed by the transfer device 9 to the unloading section for subsequent processing.

[0045] Optionally, the unloading section is equipped with a detection device, which can be a CCD camera, used to perform short-circuit detection and appearance inspection on both sides of the finished electrode assembly.

[0046] Furthermore, this composite sheet stacking equipment also includes a finished product unloading assembly, which specifically includes an unloading device 11 and an adhesive application station 13. The adhesive application station 13 is located adjacent to the unloading section of the transfer conveyor line 10. The unloading device 11 is located between the unloading section and the adhesive application station 13. The unloading device 11 can be a four-axis robot. The unloading device 11 is equipped with a picking head, which can pick up qualified finished electrode groups and place them on the adhesive application station 13. At the adhesive application station 13, a QR code containing information is affixed to each finished electrode group.

[0047] Furthermore, the finished product unloading assembly also includes a material carrier tray 12 and an NG pull belt 14. Qualified finished product poles that have been inspected by the inspection device are transferred from the unloading device 11 to the adhesive application station 13 and finally to the material carrier tray 12, while defective products are transferred to the NG pull belt 14.

[0048] See Figure 2 As shown, Embodiment 2 of this application also provides another composite sheet stacking device, which includes the composite sheet stacking device described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the composite sheet stacking device. The same technical features and beneficial effects will not be repeated here.

[0049] The composite sheet stacking device provided in this embodiment 2 differs from the composite sheet stacking device provided in embodiment 1 in that: In this embodiment, the stacking mechanism 4 can specifically be a four-axis robot. The stacking mechanism 4 includes a fixing part 406 and a picking part 407. The fixing part 406 is fixed to a designated position in the stacking area, and the picking part 407 can perform multi-dimensional movements relative to the fixing part 406. Since the four-axis robot itself has high flexibility and freedom, by adjusting the posture of the four-axis robot, the composite unit picked up by the four-axis robot can be corrected. The four-axis robot can complete the picking, transportation, and correction of the stack. Optionally, a CCD camera is installed on the wafer picking position 402. When this composite wafer stacking equipment is running, the camera above the wafer picking position 402 positions the composite unit. The four-axis robot adjusts its posture to pick up the wafers one at a time. After the wafers are picked up, the suction cup is lifted. The four-axis robot then adjusts its posture according to the position of the next composite unit to pick up the wafers. After all the wafers are picked up, they are transported to the stacking position 403 for stacking. When a certain number of layers are reached, the four-axis robot picks up a previously collected single composite unit B from the buffer bin 6 and stacks it to the stacking position 403 to form an electrode group. Then, the hot pressing assembly hardens the electrode group C to obtain the finished electrode group.

[0050] In summary, the composite lamination equipment provided in this application can increase or decrease the number of processing stations and the number of lamination mechanisms 4 according to the planned capacity and actual production efficiency. It can greatly optimize the capacity and efficiency of the composite lamination equipment without adjusting the operating speed of the equipment, break through the processing efficiency of existing lamination equipment, achieve higher lamination production efficiency, and reduce the production cost of thermal composite lamination production. Furthermore, the composite wafer stacking equipment provided in this application is capable of producing double-layer composite unit A wafers, which further improves production efficiency compared to the traditional wafer production and stacking method of single-layer composite unit B.

[0051] Secondly, embodiments of this application also provide a lamination system, including the composite lamination device described in any of the above embodiments, and thus possesses all the beneficial technical effects of the composite lamination device, which will not be repeated here.

[0052] See Figure 1 As shown, Embodiment 2 of this application also provides a stacking system, including the composite wafer stacking device described in Embodiment 1 above. Therefore, it has all the beneficial technical effects of the composite wafer stacking device, and the same technical features and beneficial effects will not be repeated.

[0053] This stacking system includes at least one composite wafer stacking device, to Figure 1Taking the case of two composite sheet stacking devices shown as an example, the composite sheet stacking devices are arranged sequentially at intervals. Each composite sheet stacking device is equipped with a complete set of sheet making device 1, composite device 2, cutting device 3, stacking mechanism 4 and hot pressing assembly. Of course, two adjacent composite sheet stacking devices can also share the stacking mechanism 4. Moreover, the operation of each composite sheet stacking device does not affect each other. It can realize independent operation of single-sided or single composite sheet stacking devices, and can realize material change between devices without stopping the machine. This not only improves the production efficiency of this stacking system, but also improves the utilization rate of this stacking system.

[0054] Of course, the number of composite lamination equipment is not limited to two. Those skilled in the art are fully capable of adjusting the number of composite lamination equipment according to production capacity requirements.

[0055] In summary, the lamination system provided in this application significantly improves the production efficiency of the lamination system by configuring a corresponding number of composite lamination equipment, and the equipment can be changed without stopping the machine, which significantly improves the utilization rate of the lamination system.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A composite lamination equipment, characterized in that, include: The sheet-making device, laminating device, cutting device, and conveying device are arranged in sequence. The film-making apparatus includes: a first feeding component, a second feeding component, and a diaphragm feeding component. The first feeding component and the second feeding component are respectively spaced apart from the composite device, and the diaphragm feeding component is spaced apart from the second feeding component. A stacking area is formed on one side of the conveying device. The stacking area is provided with a processing station, which includes at least a piece-picking station and a piece-stacking station. The composite sheet stacking equipment also includes a stacking mechanism, which is disposed in the stacking area. The number of stacking mechanisms is at least one. When the number of stacking mechanisms is more than one, each stacking mechanism is equipped with the processing station.

2. The composite sheet stacking device according to claim 1, characterized in that, The stacking mechanism includes: Drive components; A turntable connected to the drive component; the turntable is provided with the processing station; The picking component is equipped with a picking head, which can switch positions between the conveying device and the processing station.

3. The composite sheet stacking equipment according to claim 2, characterized in that, The processing station includes buffer positions, a wafer picking position, a correction position, and a wafer stacking position that are spaced apart along the circumference of the turntable surface; the pickup head can switch positions between the conveying device, the wafer picking position, the correction position, and the wafer stacking position.

4. The composite sheet stacking device according to claim 1, characterized in that, The stacking mechanism includes: Fixing part; The pickup unit is rotatably disposed on the fixed part, and the pickup unit can switch positions between the conveying device, the picking position and the stacking position.

5. The composite sheet stacking device according to claim 1, characterized in that, The conveying device includes: A conveyor line is disposed on the side of the cutting device; A buffer hopper is located on the side of the conveyor line near the stacking area.

6. The composite sheet stacking device according to claim 1, characterized in that, The composite lamination equipment also includes: A hot pressing assembly, the hot pressing assembly including at least one hot press; A transfer conveyor line is provided at an interval from the hot pressing assembly; A transfer device is disposed between the transfer conveyor line and the hot pressing assembly; The finished product feeding assembly is arranged at an interval from the hot pressing assembly.

7. The composite sheet stacking device according to claim 1, characterized in that, The first feeding assembly is used to feed the first electrode sheet to the composite device. The first feeding assembly includes a first feeding roller and a first cutter that are spaced apart along the feeding direction of the first electrode sheet. The second feeding assembly is used to feed a second electrode sheet with the opposite polarity to the first electrode sheet into the composite device. The second feeding assembly includes a second feeding roller and a second cutter that are spaced apart along the feeding direction of the second electrode sheet. The first feeding component and the second feeding component operate simultaneously; or one of the first feeding component and the second feeding component operates alone.

8. The composite sheet stacking device according to claim 7, characterized in that, The diaphragm feeding assembly includes a first diaphragm feeding assembly and a second diaphragm feeding assembly. Both the first diaphragm feeding assembly and the second diaphragm feeding assembly are capable of releasing diaphragm material strips. Before the second electrode enters the composite device, the first diaphragm feeding assembly can attach the diaphragm material strips to one side surface of the second electrode, and the second diaphragm feeding assembly can attach the diaphragm material strips to the other side surface of the second electrode.

9. The composite lamination apparatus according to any one of claims 1 to 8, characterized in that, The composite sheet stacking equipment also includes an electrostatic adsorption platform, which is disposed between the diaphragm feeding assembly and the composite device.

10. A stacking system, characterized in that, The composite sheet stacking device includes any one of claims 1 to 9, wherein the number of the composite sheet stacking devices is at least one.

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