A hot composite high-speed lamination machine

Abstract

The present invention provides a hot composite high-speed laminating machine, which relates to the technical field of lithium battery manufacturing. The hot composite high-speed laminating machine includes a supporting wallboard, a laminating device and a laminating device. The laminating device and the laminating device are arranged on the supporting wallboard at intervals. The laminating device is used to form a composite pole piece. The laminating device includes a swing roller assembly and a folding stacking platform. The swing roller assembly is arranged above the folding stacking platform, and is used to fold and stack the composite pole pieces to form a battery cell. Limiting baffles are arranged on both sides of the folding stacking platform, so that a groove for accommodating the composite pole piece is formed on the folding stacking platform. Due to the limiting stop function of the limiting baffle, the battery cell can be stopped and limited from both sides to prevent the lamination from being loose, thereby improving the lamination quality. In addition, due to the use of a swing roller assembly to fold and stack the composite pole piece, and the limiting baffle is arranged, the folded composite pole piece can be effectively fixed, so that the problem of loose composite pole piece does not need to be considered during lamination, and the lamination speed is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery manufacturing, and in particular to a thermal composite high-speed laminating machine. Background Art

[0002] At present, the lithium-ion battery process can be summarized as follows: homogenization → coating → rolling → slitting → film making → cell making → shelling → liquid injection → formation → capacity division, etc. Winding or lamination equipment is responsible for the production of films and cells. There are various traditional lamination methods, but they can be roughly divided into several categories such as single-piece stacking method and Z-shaped stacking method.

[0003] The disadvantages of the existing technology are that the pole pieces are in a loose state and cannot be fixed, which can easily cause battery cell safety problems. In addition, the efficiency of stacking is very low, and the output of battery cells cannot keep up with market demand.

[0004] In view of this, in order to solve the safety hazards of battery cells and the problems of low stacking efficiency, it is particularly important to develop a new stacking method that can improve the quality of battery cells while also greatly improving the stacking efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a thermal composite high-speed lamination machine, which greatly improves the safety during lamination and improves the quality of battery cells, while also greatly improving the lamination efficiency, thereby greatly improving the battery cell manufacturing efficiency.

[0006] The present invention is achieved by adopting the following technical solutions.

[0007] The present invention provides a thermal composite high-speed laminating machine, comprising a supporting wall panel, a laminating device and a laminating device, wherein the laminating device and the laminating device are arranged on the supporting wall panel at intervals, the laminating device is used to form a composite electrode, and the laminating device comprises a swinging roller assembly and a folding stacking table, the swinging roller assembly is arranged above the folding stacking table, and is used to fold and stack the composite electrode sheets to form a battery cell, and limiting baffles are arranged on both sides of the folding stacking table so that a groove for accommodating the composite electrode sheets is formed on the folding stacking table.

[0008] Furthermore, the swing roller assembly includes a swing clamping roller and a feed roller. The feed roller is arranged above the folding stacking table and is used to convey the composite electrode sheet to the folding stacking table. The swing clamping roller is movably arranged between the feed roller and the folding stacking table and can drive the composite electrode sheet to swing above both sides of the folding stacking table to fold and stack the composite electrode sheet.

[0009] Furthermore, the hot composite high-speed stacking machine also includes a frame, a hot pressing table, a material picking robot, a material unloading robot and a conveying assembly. The hot pressing table, the material picking robot, the material unloading robot and the conveying assembly are all arranged on the frame, and the hot pressing table is arranged close to the folding and stacking table. The material picking robot is arranged between the hot pressing table and the folding and stacking table, and is used to transfer the battery cells to the hot pressing table. The hot pressing table is used to hot press the battery cells. The conveying assembly is arranged close to the hot pressing table, and the material unloading robot is arranged on one side of the conveying assembly, and is used to transfer the battery cells to the conveying assembly for conveying.

[0010] Furthermore, a testing mechanism is also provided on the frame, and the material-retrieving robot is also used to transfer the hot-pressed battery cells to the testing mechanism for testing, and the material-unloading robot is also used to transfer the qualified battery cells to the conveying assembly for conveying.

[0011] Furthermore, the film making device includes an unwinding assembly, a slicing assembly and a thermal composite assembly. The unwinding assembly is arranged on the supporting wall panel and away from the folding and stacking table, the thermal composite assembly is arranged close to the folding and stacking table, and the slicing assembly is arranged between the thermal composite assembly and the unwinding assembly. The unwinding assembly is used to provide pole pieces and diaphragms, the slicing assembly is used to cut pole pieces, and the thermal composite assembly is used to thermally composite pole pieces and diaphragms to form composite pole pieces.

[0012] Furthermore, the unwinding assembly includes a positive electrode sheet unwinding mechanism, a negative electrode sheet unwinding mechanism, a first diaphragm unwinding mechanism and a second diaphragm unwinding mechanism, and the positive electrode sheet unwinding mechanism and the negative electrode sheet unwinding mechanism are relatively arranged on the upper and lower sides of the supporting wall panel; the first diaphragm unwinding mechanism is arranged between the positive electrode sheet unwinding mechanism and the slicing assembly, for providing a first layer of diaphragm, and the second diaphragm unwinding mechanism is arranged between the negative electrode sheet unwinding mechanism and the slicing assembly, for providing a second layer of diaphragm.

[0013] Furthermore, the unwinding assembly also includes a first process correction mechanism and a second process correction mechanism. The first process correction mechanism is arranged on the electrode sheet transmission path between the positive electrode sheet unwinding mechanism and the slicing assembly, and is used to correct the positive electrode sheet; the second process correction mechanism is arranged on the electrode sheet transmission path between the negative electrode sheet unwinding mechanism and the slicing assembly, and is used to correct the negative electrode sheet.

[0014] Furthermore, the slicing assembly includes a positive electrode cutter and a negative electrode cutter. The positive electrode cutter is arranged on a supporting wall plate close to the thermal composite assembly, and the negative electrode cutter is arranged on a supporting wall plate close to the unwinding assembly. A positive electrode waste removal piece is arranged on one side of the positive electrode cutter, and a negative electrode waste removal piece is arranged on one side of the negative electrode cutter.

[0015] Furthermore, the thermal composite assembly includes a first Mylar unwinding mechanism, a second Mylar unwinding mechanism, a thermal composite baking oven and a rolling roller. The feed end of the thermal composite baking oven is arranged close to the slicing assembly for forming a composite electrode. The first Mylar unwinding mechanism is arranged above the thermal composite baking oven for providing a Mylar film covering the upper side of the composite electrode. The second Mylar unwinding mechanism is arranged below the thermal composite baking oven for providing a Mylar film covering the lower side of the composite electrode. The rolling roller is arranged at the discharge end of the thermal composite baking oven for hot rolling the composite electrode.

[0016] Furthermore, the thermal composite assembly also includes an area array camera mechanism and a passive buffer mechanism. The area array camera mechanism is arranged on the side of the rolling roller away from the thermal composite baking oven, and is used to capture images of the composite pole pieces on the conveyor belt. The passive buffer mechanism is arranged between the rolling roller and the swing roller assembly, and is used to provide tension during stacking.

[0017] The present invention has the following beneficial effects:

[0018] The present invention provides a thermal composite high-speed laminating machine, in which a swing roller assembly is arranged above a folding and stacking platform, and limited baffles are also arranged on both sides of the folding and stacking platform. The composite pole pieces are folded and stacked by the swing roller assembly. During the laminating process, due to the limited stopping effect of the limited baffles, the battery cells can be stopped and limited from both sides to prevent the laminating from being loose, thereby improving the laminating quality, ensuring the safety of the laminating process, and further improving the quality of the battery cells. In addition, due to the use of a swing roller assembly to fold and stack the composite pole pieces, and the limited baffles are arranged, the folded composite pole pieces can be effectively fixed, so that there is no need to consider the problem of loose composite pole pieces during laminating, and the laminating speed is greatly improved. Compared with the prior art, the thermal composite high-speed laminating machine provided by the present invention has high laminating quality and high laminating efficiency, and can greatly improve the quality of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A schematic diagram of the overall structure of a thermal composite high-speed lamination machine provided in an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of the middle overlapping fragment;

[0022] Figure 3 2 is a schematic diagram of the structure of the lamination device;

[0023] Figure 4 for Figure 1 Schematic diagram of the connection structure between the unwinding component and the slicing component;

[0024] Figure 5 for Figure 1 Schematic diagram of the structure of the medium-heat composite component.

[0025] Icons: 10-hot composite high-speed laminating machine; 100-support wallboard; 200-film making device; 210-unwinding assembly; 211-positive electrode unwinding mechanism; 213-negative electrode unwinding mechanism; 215-first diaphragm unwinding mechanism; 217-second diaphragm unwinding mechanism; 218-first process correction mechanism; 219-second process correction mechanism; 230-slicing assembly; 231-positive electrode cutter; 233-negative electrode cutter; 235-positive electrode rejection part; 237-negative electrode rejection part; 239-electrode driving belt; 250-hot composite assembly ; 251-first Mylar unwinding mechanism; 253-second Mylar unwinding mechanism; 255-thermal composite baking oven; 257-rolling roller; 258-area array camera mechanism; 259-passive caching mechanism; 300-stacking device; 310-swinging roller assembly; 311-swinging clamping rod; 313-feeding roller; 330-folding and stacking table; 350-limiting baffle; 370-smoothing mechanism; 400-frame; 500-hot pressing table; 600-feeding robot; 700-unloading robot; 800-conveying assembly; 900-testing mechanism. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the inventive product is usually placed when in use, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] As disclosed in the background technology, in the prior art, there is no stopper during lamination, which results in loose lamination and easy slippage of the stack, affecting the quality of the lamination. The edge alignment is low, affecting the quality of the battery cell. In order to reduce the probability of lamination slippage during lamination, the loose composite pole pieces need to be slowly stacked and the lamination table slowly lowered, which results in low lamination efficiency and is difficult to meet production requirements.

[0032] The thermal composite high-speed lamination machine provided by the present invention can perform lamination operations efficiently and safely, greatly improving the quality of battery cells.

[0033] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments can be combined with each other.

[0034] First embodiment

[0035] See also Figures 1 to 3 The present invention provides a thermal composite high-speed lamination machine 10, which has high lamination efficiency and high battery cell quality and can effectively prevent the composite pole piece from slipping off.

[0036] The hot composite high-speed stacking machine 10 provided in this embodiment includes a supporting wall panel 100, a film-making device 200, a stacking device 300, a frame 400, a hot pressing table 500, a material-taking robot 600, a material-unloading robot 700 and a conveying assembly 800. The film-making device 200 and the stacking device 300 are arranged on the supporting wall panel 100 at intervals. The film-making device 200 is used to form a composite electrode. The stacking device 300 includes a swing roller assembly 310 and a folding stacking table 330. The swing roller assembly 310 is arranged above the folding stacking table 330 and is used to fold and stack the composite electrode sheets to form a battery cell. Limit baffles 350 are arranged on both sides of the folding stacking table 330 so that grooves for accommodating the composite electrode sheets are formed on the folding stacking table 330. The hot pressing table 500, the material picking robot 600, the unloading robot 700 and the conveying assembly 800 are all arranged on the frame 400, and the hot pressing table 500 is arranged close to the folding and stacking table 330. The material picking robot 600 is arranged between the hot pressing table 500 and the folding and stacking table 330, and is used to transfer the battery cells to the hot pressing table 500. The hot pressing table 500 is used to hot press the battery cells. The conveying assembly 800 is arranged close to the hot pressing table 500, and the material unloading robot 700 is arranged on one side of the conveying assembly 800, and is used to transfer the battery cells to the conveying assembly 800 for conveying.

[0037] In this embodiment, the film-making device 200 and the laminating device 300 are arranged on the supporting wallboard 100, and the supporting wallboard 100 is in a vertical position. The various components of the film-making device 200 and the laminating device 300 are spaced and reasonably distributed on the supporting wallboard 100, so that the various components of the film-making device 200 and the laminating device 300 are operated in the vertical direction. The hot press table 500, the material picking manipulator 600, the material unloading manipulator 700 and the conveying assembly 800 at the rear end are arranged on the frame 400, and the laminating section is formed in combination with the laminating device 300. The frame 400 is in a horizontal position, so that the hot press table 500, the material picking manipulator 600, the material unloading manipulator 700 and the conveying assembly 800 are all arranged in the horizontal direction, the material picking manipulator 600 and the material unloading manipulator 700 are used to translate the battery cells in the horizontal direction, and the conveying assembly 800 is used to convey the battery cells in the horizontal direction.

[0038] The swing roller assembly 310 includes a swing clamping roller and a feed roller 313. The feed roller 313 is arranged above the folding stacking platform 330 and is used to convey the composite electrode to the folding stacking platform 330. The swing clamping roller is movably arranged between the feed roller 313 and the folding stacking platform 330 and can drive the composite electrode to swing above both sides of the folding stacking platform 330 to fold and stack the composite electrode. Specifically, the feed roller 313 is rotatably arranged on the supporting wall panel 100, and the swing clamping rod 311 is movably arranged on the supporting wall panel 100 and can swing in the left and right directions relative to the feed roller 313 to realize folding and stacking the composite electrode.

[0039] In this embodiment, a smoothing mechanism 370 is further arranged above the folding table 330. The smoothing mechanism 370 includes a smoothing roller, a rotating shaft and a smoothing arm. The rotating shaft is rotatably arranged on the supporting wall panel 100. One end of the smoothing arm is connected to the rotating shaft, and the other end is connected to the smoothing roller. The smoothing roller is used to smooth both sides of the battery cell to improve the integrity of the battery cell.

[0040] It should be noted that folding and stacking composite electrodes refers to stacking the composite electrodes in a Z-shaped stacking manner. At the same time, since the positive electrodes on the composite electrodes are staggered on both sides of the negative electrodes, the stress at the edges on both sides can be minimized during stacking, thus avoiding the stacking edges of the composite electrodes affecting the stacking quality.

[0041] It should also be noted that the composite electrode sheet in this embodiment is covered with a first layer of diaphragm and a second layer of diaphragm on the upper and lower sides of the negative electrode sheet, respectively. At the same time, positive electrode sheets are arranged on the first layer of diaphragm, and positive electrode sheets are arranged on the second layer of diaphragm. The positive electrode sheets on the upper and lower sides are staggered, and the distance between two adjacent positive electrode sheets is at least the distance of a negative electrode sheet, so as to facilitate subsequent lamination.

[0042] In this embodiment, a testing mechanism 900 is also provided on the rack 400, and the material taking robot 600 is also used to transfer the hot pressed battery cells to the testing mechanism 900 for testing, and the material unloading robot 700 is also used to transfer the qualified battery cells to the conveying assembly 800 for conveying. Specifically, the testing mechanism 900 includes a glue sticking tester and a short circuit tester. The glue sticking tester is used to perform a glue sticking test on the battery cells to detect the structural quality of the battery cells, and the short circuit tester is used to perform a short circuit test on the battery cells to detect the electrical performance of the battery cells. For the specific principles of the glue sticking test and the short circuit test, please refer to the existing test principles.

[0043] In the actual lamination process, the composite pole pieces are folded and stacked by swinging the clamping rod 311, and the composite pole pieces are piled up in the groove of the folding and stacking platform 330. Due to the provision of the limit baffle 350, the two sides of the battery cell can be stopped to prevent the composite pole pieces from sliding off. The battery cell made in this way not only has high alignment accuracy, but also has a battery cell output efficiency that is several times faster than other methods. The material-retrieving robot 600 removes the folded battery cell and places it on the hot pressing platform 500 for hot pressing. After the hot pressing is completed, the material-retrieving robot 600 removes the battery cell and places it on the testing mechanism 900 for gluing and short circuit testing. Two groups of hot pressing platforms are provided to improve efficiency. If the battery cell is qualified, it is clamped by the unloading robot 700 and placed on the conveying assembly 800. Specifically, it is conveyed to the manual unloading position by a belt. If the battery cell is unqualified, it is placed in the NG unloading area by the unloading robot 700.

[0044] The film making device 200 includes an unwinding component 210, a slicing component 230 and a thermal composite component 250. The unwinding component 210 is arranged on the supporting wall panel 100 and away from the folding and stacking table 330. The thermal composite component 250 is arranged close to the folding and stacking table 330. The slicing component 230 is arranged between the thermal composite component 250 and the unwinding component 210. The unwinding component 210 is used to provide pole pieces and diaphragms. The slicing component 230 is used to cut pole pieces. The thermal composite component 250 is used to thermally composite pole pieces and diaphragms and form composite pole pieces.

[0045] See also Figure 4 The unwinding assembly 210 includes a positive electrode sheet unwinding mechanism 211, a negative electrode sheet unwinding mechanism 213, a first diaphragm unwinding mechanism 215 and a second diaphragm unwinding mechanism 217. The positive electrode sheet unwinding mechanism 211 and the negative electrode sheet unwinding mechanism 213 are relatively arranged on the upper and lower sides of the supporting wall panel 100; the first diaphragm unwinding mechanism 215 is arranged between the positive electrode sheet unwinding mechanism 211 and the slicing assembly 230, and is used to provide a first layer of diaphragm. The second diaphragm unwinding mechanism 217 is arranged between the negative electrode sheet unwinding mechanism 213 and the slicing assembly 230, and is used to provide a second layer of diaphragm.

[0046] In this embodiment, there are two positive electrode sheet unwinding mechanisms 211 and two negative electrode sheet unwinding mechanisms 213, wherein a positive electrode sheet unwinding mechanism 211 and a negative electrode sheet unwinding mechanism 213 are arranged on the upper part of the supporting wall panel 100, and a positive electrode sheet unwinding mechanism 211 and a negative electrode sheet unwinding mechanism 213 are arranged on the lower part of the supporting wall panel 100. The two positive electrode sheet unwinding mechanisms 211 and the two negative electrode sheet unwinding mechanisms 213 can greatly improve the unwinding speed.

[0047] It should be noted that a tension control mechanism is also provided on the discharge side of each positive electrode sheet unwinding mechanism 211 and each negative electrode sheet unwinding mechanism 213 , and the tension control mechanism is used to provide tension when the electrode sheets are transported to ensure the transport effect of the electrode sheets.

[0048] Furthermore, the unwinding assembly 210 also includes a first process deflection correction mechanism 218 and a second process deflection correction mechanism 219. The first process deflection correction mechanism 218 is arranged on the electrode sheet transmission path between the positive electrode sheet unwinding mechanism 211 and the slicing assembly 230, and is used to correct the deflection of the positive electrode sheet; the second process deflection correction mechanism 219 is arranged on the electrode sheet transmission path between the negative electrode sheet unwinding mechanism 213 and the slicing assembly 230, and is used to correct the deflection of the negative electrode sheet. In this embodiment, there are two first process deflection correction mechanisms 218 and two second process deflection correction mechanisms 219, which can realize the deflection correction of the two positive electrode sheet unwinding mechanisms 211 and the two negative electrode sheet unwinding mechanisms 213, and ensure the tape running accuracy.

[0049] The slicing assembly 230 includes a positive electrode cutter 231 and a negative electrode cutter 233. The positive electrode cutter 231 is arranged on the supporting wallboard 100 close to the thermal composite assembly 250, and the negative electrode cutter 233 is arranged on the supporting wallboard 100 close to the unwinding assembly 210. A positive electrode waste removal piece 235 is arranged on one side of the positive electrode cutter 231, and a negative electrode waste removal piece 237 is arranged on one side of the negative electrode cutter 233.

[0050] In this embodiment, a pole piece drive belt 239 is provided between the positive electrode cutter 231 and the negative electrode cutter 233 , and a pole piece drive belt 239 is also provided between the positive electrode cutter 231 and the thermal composite assembly 250 , and the pole piece drive belt 239 is used to drive the pole piece to move.

[0051] In order to achieve the efficiency of cutting the electrode into the sheet (the maximum belt speed is 600mm / s), two groups of upper and lower cutters are set to work alternately. Due to space limitations, a pole drive belt 239 is set between the negative electrode cutter 233 and the positive electrode cutter 231 to drive the pole piece. A group of pole piece waste removal parts are set on the right side of each group of cutters to remove pole pieces with missing ears, labels (poles with problems after laser cutting will be labeled), pole pieces torn, etc. A group of short pole piece drive belts 239 are set behind the positive electrode cutter 231 to connect with the thermal composite component 250 to ensure that the composite pole piece that has passed the cutter enters the thermal composite component 250 more accurately for composite.

[0052] See also Figure 5 The thermal composite component 250 includes a first Mylar unwinding mechanism 251, a second Mylar unwinding mechanism 253, a thermal composite baking box 255, a rolling roller 257, an array camera mechanism 258 and a passive buffer mechanism 259. The feed end of the thermal composite baking box 255 is arranged close to the slicing component 230 for forming a composite electrode. The first Mylar unwinding mechanism 251 is arranged above the thermal composite baking box 255 for providing a Mylar film covering the upper side of the composite electrode. The second Mylar unwinding mechanism 253 is arranged below the thermal composite baking box 255 for providing a Mylar film covering the lower side of the composite electrode. The rolling roller 257 is arranged at the discharge end of the thermal composite baking box 255 for hot rolling the composite electrode. The area array camera mechanism 258 is an area array CCD, which is arranged on the side of the rolling roller 257 away from the hot composite baking oven 255, and is used to capture images of the composite pole pieces on the conveyor belt. The passive buffer mechanism 259 is arranged between the rolling roller 257 and the swing roller assembly 310, and is used to provide tension during stacking.

[0053] It should be noted that the working principle of the thermal composite baking oven 255 is to utilize high temperature conditions to fuse the positive and negative electrode sheets with the diaphragm (diaphragm with glue) under the drive of the Mylar film, and then tightly fit the positive and negative electrode sheets with the diaphragm under the rolling roller 257. The first Mylar unwinding mechanism 251 and the second Mylar unwinding mechanism 253 are arranged above and below the thermal composite baking oven 255, and both have tension control components to control the tension. In order to ensure the accuracy of lamination, a surface array CCD is set to shoot the composite electrode sheet on the belt after rolling over the roller 257, and the captured signal is sent to the correction mechanism of the unwinding component 210, and the correction mechanism then performs related actions. The role of passive caching is to save the auxiliary time of lamination, play the role of continuous feeding, and provide tension for the lamination device 300 when laminating.

[0054] It should also be noted that, in this embodiment, since the various components of the film-making device 200 are arranged on the supporting wall panel 100, and the supporting wall panel 100 is arranged vertically, the various components of the film-making device 200 need to be separated by partitions to prevent the positive and negative electrodes and diaphragms from falling off during the tape conveying process and affecting the production quality of the battery cell (the surface of the electrode has various composite materials such as carbon powder).

[0055] In summary, the present embodiment provides a hot composite high-speed laminating machine 10, in which the swing roller assembly 310 is arranged above the folding and stacking platform 330, and the two sides of the folding and stacking platform 330 are also provided with limit baffles 350, and the composite pole pieces are folded and stacked by the swing roller assembly 310. During the laminating process, due to the limit stop function of the limit baffle 350, the battery cell can be stopped and limited from both sides to prevent the laminating from being loose, thereby improving the laminating quality, ensuring the safety of the laminating process, and further improving the quality of the battery cell. In addition, due to the use of the swing roller assembly 310 to fold and stack the composite pole pieces, and the limit baffle 350 is provided, the folded composite pole pieces can be effectively fixed, so that there is no need to consider the problem of loose composite pole pieces during laminating, which greatly improves the laminating speed. In addition, through the reasonable layout of the various components of the film making device 200, the structure is made more compact, and the overall occupied space is greatly reduced.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A thermal composite high-speed lamination machine, characterized in that: It comprises a supporting wall plate, a sheet-making device and a sheet-stacking device, wherein the sheet-making device and the sheet-stacking device are arranged at intervals on the supporting wall plate, the sheet-making device is used to form a composite electrode sheet, the sheet-stacking device comprises a swinging roller assembly and a folding and stacking platform, the swinging roller assembly is arranged above the folding and stacking platform, and is used to fold and stack the composite electrode sheets to form a battery cell, and limiting baffles are arranged on both sides of the folding and stacking platform, and are used to limit the battery cell, so that a groove for accommodating the battery cell is formed on the folding and stacking platform; The swing roller assembly includes a swing clamping roller, which is arranged upstream of the folding and stacking table along the running direction of the composite pole piece. The swing clamping roller is configured to drive the composite pole piece to swing left and right above both sides of the folding and stacking table to fold and stack the composite pole piece.

2. The hot composite high-speed lamination machine according to claim 1, characterized in that: The hot composite high-speed stacking machine also includes a frame, a hot pressing table, a material picking robot, a material unloading robot and a conveying component. The hot pressing table, the material picking robot, the material unloading robot and the conveying component are all arranged on the frame, and the hot pressing table is arranged close to the folding and stacking table. The material picking robot is arranged between the hot pressing table and the folding and stacking table, and is used to transfer the battery cell to the hot pressing table. The hot pressing table is used to hot press the battery cell. The conveying component is arranged close to the hot pressing table, and the material unloading robot is arranged on one side of the conveying component, and is used to transfer the battery cell to the conveying component for conveying.

3. The hot composite high-speed lamination machine according to claim 2, characterized in that: The frame is also provided with a testing mechanism, the material taking robot is also used to transfer the hot pressed battery cells to the testing mechanism for testing, and the material unloading robot is also used to transfer the qualified battery cells to the conveying assembly for conveying.

4. The hot composite high-speed lamination machine according to claim 1, characterized in that: The film-making device includes an unwinding component, a slicing component and a thermal composite component. The unwinding component is arranged on the supporting wall panel and away from the folding and stacking table, the thermal composite component is arranged close to the folding and stacking table, the slicing component is arranged between the thermal composite component and the unwinding component, the unwinding component is used to provide pole pieces and diaphragms, the slicing component is used to cut the pole pieces, and the thermal composite component is used to thermally composite the pole pieces and the diaphragms to form composite pole pieces.

5. The hot composite high-speed lamination machine according to claim 4, characterized in that: The unwinding assembly includes a positive electrode sheet unwinding mechanism, a negative electrode sheet unwinding mechanism, a first diaphragm unwinding mechanism and a second diaphragm unwinding mechanism. The positive electrode sheet unwinding mechanism and the negative electrode sheet unwinding mechanism are relatively arranged on the upper and lower sides of the supporting wall panel; the first diaphragm unwinding mechanism is arranged between the positive electrode sheet unwinding mechanism and the slicing assembly to provide a first layer of diaphragm, and the second diaphragm unwinding mechanism is arranged between the negative electrode sheet unwinding mechanism and the slicing assembly to provide a second layer of diaphragm.

6. The hot composite high-speed lamination machine according to claim 5, characterized in that: The unwinding assembly further includes a first process correction mechanism and a second process correction mechanism, wherein the first process correction mechanism is arranged on the electrode sheet transmission path between the positive electrode sheet unwinding mechanism and the slicing assembly, and is used to correct the positive electrode sheet; The second process deviation correction mechanism is arranged on the electrode sheet transmission path between the negative electrode sheet unwinding mechanism and the slicing assembly, and is used for correcting the deviation of the negative electrode sheet.

7. The hot composite high-speed lamination machine according to claim 4, characterized in that: The slicing assembly includes a positive electrode cutter and a negative electrode cutter. The positive electrode cutter is arranged on the supporting wall plate close to the thermal composite assembly, and the negative electrode cutter is arranged on the supporting wall plate close to the unwinding assembly. A positive electrode waste removal piece is arranged on one side of the positive electrode cutter, and a negative electrode waste removal piece is arranged on one side of the negative electrode cutter.

8. The hot composite high-speed lamination machine according to claim 4, characterized in that: The thermal composite assembly includes a first Mylar unwinding mechanism, a second Mylar unwinding mechanism, a thermal composite baking oven and a rolling roller. The feed end of the thermal composite baking oven is arranged close to the slicing assembly for forming the composite electrode. The first Mylar unwinding mechanism is arranged above the thermal composite baking oven for providing a Mylar film covering the upper side of the composite electrode. The second Mylar unwinding mechanism is arranged below the thermal composite baking oven for providing a Mylar film covering the lower side of the composite electrode. The rolling roller is arranged at the discharge end of the thermal composite baking oven for hot rolling the composite electrode.

9. The hot composite high-speed lamination machine according to claim 8, characterized in that: The thermal composite assembly also includes an area array camera mechanism and a passive buffer mechanism. The area array camera mechanism is arranged on the side of the rolling roller away from the thermal composite baking oven, and is used to capture images of the composite pole piece on the belt. The passive buffer mechanism is arranged between the rolling roller and the swing roller assembly, and is used to provide tension during stacking.

Images