Multi-sheet thermal lamination apparatus and lamination system

Abstract

The application relates to the technical field of batteries, in particular to a multi-piece hot composite lamination equipment and a lamination system. The multi-piece hot composite lamination equipment comprises sequentially arranged sheet manufacturing devices, a composite device, a cutting device and a lamination device. The sheet manufacturing device comprises a first blanking mechanism, a second blanking mechanism and a diaphragm blanking mechanism. The lamination device comprises at least one production station, and the production station comprises at least one correction table and at least one lamination table. The application further comprises a hot pressing device which is arranged at intervals from the lamination device. The multi-piece hot composite lamination equipment provided by the application adaptively configures one or more correction tables and lamination tables for the production station, and the number of production stations, the number of correction tables and the number of lamination tables of each production station can be increased or decreased according to the planned production capacity and actual production efficiency, so that the production capacity and efficiency of the multi-piece hot composite lamination equipment are greatly optimized.

Description

Technical Field

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

[0002] Recently, the new energy industry has developed rapidly and has become one of the pillar industries. As a key component of the new energy industry, lithium batteries have advantages such as strong energy storage capacity, no memory effect, high charge-discharge cycle, and recyclability.

[0003] Thermal lamination, as a lamination method, involves first thermally bonding one polarity electrode with a separator to form a thermally bonded unit, which is then alternately laminated with another polarity electrode to form an electrode assembly. Its advantage lies in enabling 100% inspection of the positive and negative electrodes and the separator, eliminating the risk of separator wrinkles and improving cell safety. However, compared to winding methods, traditional thermal lamination and 'Z'-type lamination have lower production efficiency and higher production costs. Therefore, further improving the efficiency of lamination equipment is crucial to reducing lamination production costs. Utility Model Content

[0004] The purpose of this application is to provide a multi-wafer thermal composite stacking device and stacking system, so as to solve to some extent the technical problems of low production efficiency and difficulty in controlling production costs of existing thermal composite stacking devices.

[0005] This application provides a multi-sheet thermal lamination equipment, including a sheet-making device, a lamination device, a cutting device and a lamination device arranged in sequence; the sheet-making device includes: a first feeding mechanism, a second feeding mechanism and a diaphragm feeding mechanism, the first feeding mechanism and the second feeding mechanism are respectively spaced apart from the lamination device, and the diaphragm feeding mechanism is spaced apart from the second feeding mechanism; The stacking device includes at least one production station, and the production station includes at least one alignment table and at least one stacking table. The multi-piece thermal composite stacking equipment also includes a hot pressing device, which is spaced apart from the stacking device.

[0006] In the above technical solution, the first feeding mechanism is further used to feed the first electrode sheet to the composite device. The first feeding mechanism 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 mechanism is used to feed a second electrode sheet with the opposite polarity to the first electrode sheet into the composite device. The second feeding mechanism 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 mechanism and the second feeding mechanism operate simultaneously; or one of the first feeding mechanism and the second feeding mechanism operates alone.

[0007] In any of the above technical solutions, the diaphragm feeding mechanism further includes a first diaphragm feeding mechanism and a second diaphragm feeding mechanism, both of which are capable of releasing the diaphragm material strip; Before the second electrode enters the composite device, the first diaphragm feeding mechanism can attach the diaphragm material strip to one side of the second electrode, and the second diaphragm feeding mechanism can attach the diaphragm material strip to the other side of the second electrode.

[0008] In any of the above technical solutions, the composite device is further disposed between the diaphragm feeding mechanism and the cutting device; The multi-sheet thermal lamination equipment also includes an electrostatic platform, which is disposed between the diaphragm feeding mechanism and the lamination device.

[0009] In any of the above technical solutions, the multi-piece thermal composite stacking equipment further includes a transfer device, which is disposed on the side of the cutting device and is located between the cutting device and the production station. The transfer device is equipped with a buffer area.

[0010] In any of the above technical solutions, the multi-piece thermal composite stacking equipment further includes a transfer device, which includes a feeding section and a discharging section. The feeding section is located on the side of the stacking device, and the discharging section is located on the side of the hot pressing device.

[0011] In any of the above technical solutions, the hot pressing device further includes: At least one hot press; A transfer device is disposed between the transfer device and the hot press.

[0012] In any of the above technical solutions, the multi-wafer thermal composite stacking device further includes: An adhesive application station is provided at an interval from the transfer device; A detection device is installed in the transfer device; A feeding device is disposed between the adhesive application station and the transfer device.

[0013] In any of the above technical solutions, the multi-wafer thermal composite stacking device further includes: A logistics line pallet, wherein the logistics line pallet is disposed on the side of the unloading section; NG pull belt, wherein the NG pull belt is disposed on the side of the feeding section; The feeding device includes a pickup head, which can switch positions between the adhesive application station, the transfer device, the logistics line pallet, and the NG conveyor belt.

[0014] This application also provides a lamination system, including at least one multi-wafer thermal composite lamination device as described in any of the above technical solutions, and thus possesses all the beneficial technical effects of the multi-wafer thermal composite lamination device, which will not be repeated here.

[0015] Compared with the prior art, the beneficial effects of this application are as follows: The multi-sheet thermal lamination equipment provided in this application includes: a sheet-making device, a laminating device, a cutting device, and a lamination device arranged in sequence; the sheet-making device includes: a first feeding mechanism, a second feeding mechanism, and a diaphragm feeding mechanism, the first feeding mechanism and the second feeding mechanism being spaced apart from the laminating device, and the diaphragm feeding mechanism being spaced apart from the second feeding mechanism; the lamination device includes at least one production station, the production station including at least one alignment table and at least one lamination table; the multi-sheet thermal lamination equipment also includes a hot pressing device, the hot pressing device being spaced apart from the lamination device.

[0016] The multi-wafer thermal lamination equipment provided in this application allows for the adaptive configuration of one or more alignment tables and lamination tables at each production station during the lamination stage. The number of production stations, the number of alignment tables at each production station, and the number of lamination tables can be increased or decreased according to planned capacity and actual production efficiency. This greatly optimizes the capacity and efficiency of the multi-wafer thermal lamination equipment, breaks through the processing efficiency of existing lamination equipment, achieves higher lamination production efficiency, and reduces the production cost of thermal lamination production.

[0017] The lamination system provided in this application includes at least one of the multi-plate thermal composite lamination devices described above. Therefore, by configuring a corresponding number of multi-plate thermal composite lamination devices, the production efficiency of this lamination system is greatly improved, and the equipment can be changed without stopping the machine, which significantly improves the utilization rate of this lamination system. Attached Figure Description

[0018] 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.

[0019] Figure 1This is a schematic diagram of the structure of the multi-plate thermal composite stacking device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the stacking process of the multi-wafer thermal composite stacking device provided in the embodiments of this application.

[0020] Figure label: 1-Sheet making device, 101-First feeding mechanism, 102-Second feeding mechanism, 103-First diaphragm feeding mechanism, 104-Second diaphragm feeding mechanism, 105-First cutter, 106-Second cutter, 2-Composite device, 3-Cutting device, 4-Stacking device, 401-Correction table, 402-Stacking table, 5-Hot press, 6-Electrostatic platform, 7-Transfer device, 8-Transfer device, 9-Transfer device, 901-Feeding section, 902-Feeding section, 10-Feeding device, 11-Adhesive application station, 12-Logistics line pallet, 13-NG pull belt, 100-Double-sheet composite unit, 200-Single-sheet composite unit, 300-Electrode group, 400-Positive electrode sheet, 500-Negative electrode sheet, 600-Diaphragm. Detailed Implementation

[0021] 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.

[0022] 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.

[0023] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0024] 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.

[0025] 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.

[0026] The following reference Figure 1 and Figure 2 This application describes the multi-wafer thermal composite stacking equipment and stacking system according to embodiments.

[0027] See Figure 1 and Figure 2 As shown, an embodiment of this application provides a multi-electrode thermal lamination and stacking device. This device includes a sheet-making unit 1, a lamination unit 2, a cutting unit 3, a stacking unit 4, and a hot-pressing unit arranged sequentially at intervals. The sheet-making unit 1 includes a first feeding mechanism 101, a second feeding mechanism 102, and a diaphragm feeding mechanism. The first feeding mechanism 101 and the second feeding mechanism 102 are spaced apart. The first feeding mechanism 101 supplies a first electrode sheet and conveys it to the lamination unit 2. The second feeding mechanism 102 supplies a second electrode sheet and conveys it to the lamination unit 2. The diaphragm feeding mechanism supplies a diaphragm strip to the second electrode sheet before it enters the lamination unit 2. It should be noted that in this embodiment, the first and second electrodes have opposite polarities. Optionally, the first electrode sheet is a positive electrode sheet 400, and the second electrode sheet is a negative electrode sheet 500.

[0028] The positive electrode 400 and the negative electrode 500 with the 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 double-layer composite unit 100 with a structure of positive electrode 400-separator 600-negative electrode 500-separator 600. Furthermore, it should be noted that the first feeding mechanism 101 and the second feeding mechanism 102 are each driven independently. They can operate simultaneously or one can operate independently. Optionally, in one of the operating modes of the sheet-making device 1 in this embodiment, the first feeding mechanism 101 is stopped, and the second feeding mechanism 102 operates independently, so that after processing by the composite device 2 and the cutting device 3, a single-layer composite unit 200 with a structure of separator 600-negative electrode 500-separator 600 can be obtained.

[0029] The stacking device 4 is arranged adjacent to the cutting device 3. After the double-piece composite unit 100 and / or single-piece composite unit 200 are transferred to the stacking device 4, they are stacked to obtain the electrode assembly 300. The hot pressing device is arranged adjacent to the stacking device 4. After the electrode assembly 300 is sent to the hot pressing device for hot pressing and forming, the finished electrode assembly can be obtained.

[0030] Specifically, the first feeding mechanism 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 roll of material wound on the first feeding roller is a positive electrode roll. Driven by a motor or other driving component, the first feeding roller rotates, 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 400. Preferably, the first cutter 105 is a pre-existing fixed-cut flying cutter.

[0031] Optionally, the first feeding mechanism 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.

[0032] Optionally, the first feeding mechanism 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 400 to achieve the correction effect.

[0033] Furthermore, the second feeding mechanism 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 material wound on the second feeding roller is a negative electrode roll. When the second feeding roller rotates and unwinds, the negative electrode roll is released. After the negative electrode roll is conveyed to the second cutter 106, the second cutter 106 cuts the negative electrode roll into several negative electrode sheets 500. Optionally, the second feeding mechanism 102 also includes a deviation correction device that acts on the second feeding roller. A defect detection device is also provided between the second feeding roller and the second cutter 106.

[0034] The diaphragm feeding mechanism includes a first diaphragm feeding mechanism 103 and a second diaphragm feeding mechanism 104. The first diaphragm feeding mechanism 103 and the second diaphragm feeding mechanism 104 are distributed on both sides of the second feeding mechanism 102. The first diaphragm feeding mechanism 103 is used to attach the diaphragm material strip to one side surface of the negative electrode sheet 500, and the second diaphragm feeding mechanism 104 is used to attach the diaphragm material strip to the other side surface of the negative electrode sheet 500. The first diaphragm feeding mechanism 103 includes a first roller with a diaphragm material strip wound on it. The diaphragm material strip is positioned on one side of each negative electrode 500 so that it can be attached to one side of a certain number of negative electrode 500 cut into sheet shapes. The second diaphragm feeding mechanism 104 includes a second roller with a diaphragm material strip wound on it. The diaphragm material strip is positioned on the other side of each negative electrode 500 so that it can be attached to the other side of each negative electrode 500, thereby forming a composite unit material strip with a structure of diaphragm material strip-negative electrode 500-diaphragm material strip, and multiple negative electrode 500s are arranged at intervals between the two layers of diaphragm material strips.

[0035] Furthermore, the composite device 2 includes a composite roller with a composite space. The positive electrode sheet 400, cut by the first cutter 105, and the negative electrode sheet 500, cut by the second cutter 106, are composited within this space to form a double-sheet composite strip with a continuous structure of positive electrode sheet 400-diaphragm strip-negative electrode sheet 500-diaphragm strip. The composite device 2 also includes a conveyor roller that transports the double-sheet composite strip to the cutting device 3.

[0036] Optionally, this multi-sheet thermal lamination equipment also includes an electrostatic platform 6. Along the conveying direction of the positive electrode sheet 400 and the negative electrode sheet 500, the electrostatic platform 6 is positioned behind the lamination roller, and is located between the first diaphragm feeding mechanism 103 and the lamination device 2, and between the second diaphragm feeding mechanism 104 and the lamination device 2. After the second cutter 106 cuts the negative electrode roll into several negative electrode sheets 500, each negative electrode sheet 500 is conveyed to the electrostatic platform 6 along with the diaphragm strips on both sides at a fixed spacing. Electrostatic adsorption fixes each negative electrode sheet 500 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 500 production process of the second feeding mechanism 102, the first feeding mechanism 101 can be in a stopped state or can operate synchronously with the second feeding mechanism 102. Optionally, a buffer roller is provided between the first feeding roller and the first cutter 105. When both the first feeding mechanism 101 and the second feeding mechanism 102 are in operation, the positive electrode roll is released after correction. After tension control, foreign object control, defect detection, and secondary correction are performed on 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. In the composite space, each positive electrode sheet 400 is positioned with its center coincident with one of the negative electrode sheets 500 in the composite strip. The positive electrode 400, the separator strip, and the negative electrode 500 are fed into the composite space and then thermally bonded by the composite device 2 to form a double composite strip with a structure of positive electrode 400-separator strip-negative electrode 500-separator strip.

[0037] When the first feeding mechanism 101 is in a stopped state and only the second feeding mechanism 102 is operating, the second feeding roller, the first diaphragm feeding mechanism 103 and the second diaphragm feeding mechanism 104 continue to operate to produce a single-piece unit strip with the structure of diaphragm strip-negative electrode sheet 500-diaphragm strip. After the single-piece unit strip is cut into pieces by the cutting device 3, it forms a single-piece composite unit 200 with the structure of diaphragm 600-negative electrode sheet 500-diaphragm 600.

[0038] Preferably, the multi-sheet thermal lamination equipment further includes a preheating component. Optionally, the preheating component is located at the inlet of the lamination device 2. The preheating component preheats the double-sheet composite strips before the preheated double-sheet composite strips enter the lamination space for thermal lamination.

[0039] 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 platform 6 and the composite device 2. After the negative electrode sheet 500 and the diaphragm strips on both sides are electrostatically adsorbed together, they are first preheated by the preheating component, so that the negative electrode sheet 500 and the diaphragm strips on both sides are fixed together by a first thermal composite. Then, together with the positive electrode sheet 400, they enter the composite device 2 for a second thermal composite to form a double composite strip.

[0040] It should be noted that, as described above, the above describes the case where the separator material is attached to both sides of the negative electrode 500 by the separator feeding mechanism. In another case of this embodiment, when the first electrode is a negative electrode and the second electrode is a positive electrode, the first feeding mechanism 101 produces several negative electrode 500s, the second feeding mechanism 102 produces several positive electrode 400s, and the separator material is attached to both sides of each positive electrode 400 by the separator feeding mechanism. This is fully understandable to those skilled in the art. Based on this, when the first feeding mechanism 101 and the second feeding mechanism 102 operate simultaneously, the sheet-making device 1 can produce several negative electrode sheets 500 and a single-piece unit strip with a structure of separator strip-positive electrode sheet 400-separator strip. The negative electrode sheet 500 and the single-piece unit strip enter the composite device 2 together. After being thermally composited by the composite device 2 and cut by the cutting device 3, a double-piece composite unit with a structure of negative electrode sheet 500-separator 600-positive electrode sheet 400-separator 600 is produced. When the first feeding mechanism 101 is stopped and only the second feeding mechanism 102 operates, the sheet-making device 1 can produce a single-piece unit strip with a structure of separator strip-positive electrode sheet 400-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 600-positive electrode sheet 400-separator 600.

[0041] Furthermore, the cutting device 3 includes a conventional diaphragm hot cutter. The aforementioned double-sheet composite strip is fed to the cutting device 3 and cut to form a double-sheet composite unit 100 with a structure of positive electrode 400-diaphragm 600-negative electrode 500-diaphragm 600. Preferably, the cutting position of the double-sheet composite strip is at the center of the distance between adjacent negative electrode 500s. Finally, the formed double-sheet composite unit 100 is sent to the transfer device 7 described below for later use.

[0042] Furthermore, this multi-piece thermal composite stacking equipment also includes a transfer device 7, which is located between the cutting device 3 and the stacking device 4. The transfer device 7 is used to transport materials between the cutting device 3 and the stacking device 4. The double-piece composite unit 100 obtained by cutting by the cutting device 3 is first transported to the transfer device 7 with a predetermined stretch, and then transported to the stacking device 4 via the transfer device 7.

[0043] The transfer device 7 specifically includes a conveyor line, which can be a belt conveyor or a magnetic levitation conveyor line commonly used in the prior art. Optionally, the transfer device 7 is provided with a buffer area located on the side of the conveyor line, which is used to store a certain number of dual-piece composite units 100 or single-piece composite units 200.

[0044] Optionally, the transfer device 7 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 100 or single-piece composite unit 200 transferred to the conveyor line. Preferably, the transfer device 7 further 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 products 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.

[0045] Furthermore, the stacking device 4 includes a production station, and the number of production stations is at least one. Preferably, in this embodiment, the number of production stations is multiple, and the multiple production stations are arranged sequentially at intervals along the length of the conveyor line. Each production station includes at least one correction table 401 and at least one stacking table 402. The number of production stations, the number of correction tables 401, and the number of stacking tables 402 are configured according to the production capacity and expected output. Optionally, the number of correction tables 401 and the number of stacking tables 402 in each production station are the same. Each correction table 401 has a corresponding stacking table 402 on its side. Each correction table 401 is equipped with a correction device for correcting a certain number of double-layer composite units 100 and adjusting the posture of each double-layer composite unit 100. Each stacking stage 402 is equipped with a primary handling robot and a secondary handling robot. Optionally, both the primary and secondary handling robots are PNP robots. During the stacking operation, the primary handling robot uses negative pressure to pick up a certain number of double-layer composite units 100 from the conveyor line or buffer area. After the suction plate of the primary handling robot changes its distance, it transports the double-layer composite units 100 to the alignment stage 401. A camera above the alignment stage 401 takes pictures of the double-layer composite units 100 for positioning, and then the alignment device performs the alignment action; then the secondary handling robot... The robotic arm transports the corrected dual-layer composite unit 100 from the alignment table 401 to the stacking table 402, allowing the positioned and corrected dual-layer composite units 100 to be alternately stacked on the stacking table 402. Through cyclic material handling, stacking is completed alternately on the stacking table 402. When a certain number of layers are stacked, the stacking device 4 picks up a single-layer composite unit 200 and places it on top of the multiple layers of dual-layer composite units 100 as a top cover, thus forming a structure including several layers of dual-layer composite units 100 and an electrode assembly 300 with a single-layer composite unit 200 on top. After stacking, the electrode assembly 300 is removed by the transfer device 8, and the stacking table 402 continues stacking.

[0046] Furthermore, the hot pressing device includes at least one hot press 5, each hot press 5 capable of hot pressing at least one electrode group 300 at a time, and the number of hot presses 5 can be configured according to the capacity and efficiency of the wafer making and stacking process.

[0047] Furthermore, this multi-plate thermal lamination equipment also includes a transfer device 8, which can specifically be a robotic arm for loading the electrode assembly 300 before hot pressing and unloading the electrode assembly 300 after hot pressing. The transfer device 8 is located on the side of the hot pressing device.

[0048] Preferably, this multi-plate thermal lamination equipment also includes a transfer device 9, which can specifically be a belt conveyor. The transfer device 9 is located on the side of the transfer device 8, between the transfer device 8 and the hot pressing device. The electrode assembly 300 obtained after being stacked by the lamination device 4 is first transferred to the transfer device 9. This transfer process can be achieved by configuring a robotic arm to grasp the electrode assembly. Then, the transfer device 8 can pick up the electrode assembly 300 from the transfer device 9 individually or in multiples at once, and transfer it to the hot pressing front of each hot press 5 for hot pressing to pressurize and heat the assembly to harden it, thereby obtaining the finished electrode assembly. During the process of the transfer device 8 grasping the electrode assembly 300 and placing it into the transfer device 9, the transfer device 8 shuttles at the bottom of the lamination table 402 and delivers the electrode assembly 300. This process does not affect the operation of the lamination table 402, which can continuously perform lamination.

[0049] Optionally, the transfer device 9 includes two parts: a loading section 901 and a unloading section 902. The electrode assembly 300 conveyed by the conveyor line is transferred to the loading section 901 so as to supply the electrode assembly 300 to the transfer device 8. The finished electrode assembly, which has been hot-pressed by the hot pressing device, is placed by the transfer device 8 to the unloading section 902 for subsequent processing.

[0050] Optionally, the unloading section 902 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.

[0051] Furthermore, this multi-wafer thermal lamination equipment also includes a feeding device 10 and an adhesive application station 11. The adhesive application station 11 is located adjacent to the feeding section 902 of the transfer device 9. The feeding device 10 is located between the feeding section 902 and the adhesive application station 11. Specifically, the feeding device 10 can be a four-axis robot. The feeding device 10 is equipped with a picking head, which can pick up qualified finished electrode assemblies and place them in the adhesive application station 11. At the adhesive application station 11, a QR code containing information is affixed to each finished electrode assembly.

[0052] Furthermore, this multi-piece thermal lamination equipment also includes a logistics line pallet 12 and an NG pull belt 13. Qualified finished electrode assemblies that have been inspected by the testing device are transferred from the unloading device 10 to the adhesive application station 11 and finally to the logistics line pallet 12, while defective products are transferred to the NG pull belt 13.

[0053] In summary, the multi-wafer thermal lamination equipment provided in this application, during the lamination stage, adaptively configures one or more correction tables 401 and lamination tables 402 for each production station. The number of production stations, the number of correction tables 401 and the number of lamination tables 402 at each production station can be increased or decreased according to planned capacity and actual production efficiency, which greatly optimizes the capacity and efficiency of this multi-wafer thermal lamination equipment, breaks through the processing efficiency of existing lamination equipment, achieves higher lamination production efficiency, and reduces the production cost of thermal lamination production.

[0054] Furthermore, the multi-plate thermal composite lamination equipment provided in this application can perform double-plate composite unit 100 lamination, and can double the efficiency without increasing the overall operating speed of the equipment, thereby further improving the production efficiency of this multi-plate thermal composite lamination equipment.

[0055] The embodiments of this application also provide a stacking system, including the multi-wafer thermal composite stacking device described in any of the above embodiments, and thus possess all the beneficial technical effects of the multi-wafer thermal composite stacking device, which will not be repeated here.

[0056] This lamination system includes at least one multi-wafer thermal composite lamination device, to which the number of such devices is: Figure 1 Taking the case of two multi-piece thermal lamination equipment shown in the figure as an example, the multi-piece thermal lamination equipment is arranged sequentially at intervals. Each multi-piece thermal lamination equipment is equipped with a complete set of sheet-making device 1, lamination device 2, cutting device 3, lamination device 4, and hot pressing device. Of course, two adjacent multi-piece thermal lamination equipment can also share the lamination device 4. The operation of each multi-piece thermal lamination equipment does not affect each other. It can realize independent operation of lamination on one side or by a single multi-piece thermal lamination equipment. It can realize material change between equipment without stopping the machine. This not only improves the production efficiency of this lamination system, but also improves the utilization rate of this lamination system.

[0057] Of course, the number of multi-plate thermal lamination equipment is not limited to two. Those skilled in the art are fully capable of adjusting the number of multi-plate thermal lamination equipment according to production capacity requirements.

[0058] In summary, the lamination system provided in this application significantly improves the production efficiency of the lamination system by configuring a corresponding number of multi-plate thermal composite lamination devices, and the devices can be changed without stopping the machine, which significantly improves the utilization rate of the lamination system.

[0059] 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 multi-plate thermal composite stacking device, characterized in that, The device includes a sheet-making device, a laminating device, a cutting device, and a stacking device arranged in sequence; the sheet-making device includes a first feeding mechanism, a second feeding mechanism, and a diaphragm feeding mechanism, wherein the first feeding mechanism and the second feeding mechanism are respectively spaced apart from the laminating device, and the diaphragm feeding mechanism is spaced apart from the second feeding mechanism; The stacking device includes at least one production station, and the production station includes at least one alignment table and at least one stacking table. The multi-piece thermal composite stacking equipment also includes a hot pressing device, which is spaced apart from the stacking device.

2. The multi-plate thermal composite stacking device according to claim 1, characterized in that, The first feeding mechanism is used to feed the first electrode sheet to the composite device. The first feeding mechanism 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 mechanism is used to feed a second electrode sheet with the opposite polarity to the first electrode sheet into the composite device. The second feeding mechanism 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 mechanism and the second feeding mechanism operate simultaneously; or one of the first feeding mechanism and the second feeding mechanism operates alone.

3. The multi-plate thermal composite stacking device according to claim 2, characterized in that, The diaphragm feeding mechanism includes a first diaphragm feeding mechanism and a second diaphragm feeding mechanism, both of which are capable of releasing the diaphragm material strip; Before the second electrode enters the composite device, the first diaphragm feeding mechanism can attach the diaphragm material strip to one side of the second electrode, and the second diaphragm feeding mechanism can attach the diaphragm material strip to the other side of the second electrode.

4. The multi-plate thermal composite stacking device according to claim 1, characterized in that, The composite device is disposed between the diaphragm feeding mechanism and the cutting device; The multi-sheet thermal lamination equipment also includes an electrostatic platform, which is disposed between the diaphragm feeding mechanism and the lamination device.

5. The multi-plate thermal composite stacking device according to claim 1, characterized in that, The multi-piece thermal composite stacking equipment also includes a transfer device, which is disposed on the side of the cutting device and is located between the cutting device and the production station; The transfer device is equipped with a buffer area.

6. The multi-plate thermal composite stacking device according to claim 1, characterized in that, The multi-piece thermal composite stacking equipment also includes a transfer device, which includes a feeding section and a discharging section. The feeding section is located on the side of the stacking device, and the discharging section is located on the side of the hot pressing device.

7. The multi-plate thermal composite stacking device according to claim 6, characterized in that, The hot pressing device includes: At least one hot press; A transfer device is disposed between the transfer device and the hot press.

8. The multi-plate thermal composite stacking device according to claim 6, characterized in that, The multi-plate thermal composite stacking equipment also includes: An adhesive application station is provided at an interval from the transfer device; A detection device is installed in the transfer device; A feeding device is disposed between the adhesive application station and the transfer device.

9. The multi-plate thermal composite stacking device according to claim 8, characterized in that, The multi-plate thermal composite stacking equipment also includes: A logistics line pallet, wherein the logistics line pallet is disposed on the side of the unloading section; NG pull belt, wherein the NG pull belt is disposed on the side of the feeding section; The feeding device includes a pickup head, which can switch positions between the adhesive application station, the transfer device, the logistics line pallet, and the NG conveyor belt.

10. A stacking system, characterized in that, The device includes a multi-piece thermal composite stacking device as described in any one of claims 1 to 9; the number of the multi-piece thermal composite stacking devices is at least one.

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