A dry electrode rolling mechanism, production line and steel strip disassembly and installation method

Abstract

The invention discloses a dry electrode rolling mechanism, a production line and a steel strip disassembly and installation method. An upper quick-release block is arranged between an upper connecting column and a lower connecting column. The upper steel strip can be quickly taken out from the dry electrode rolling mechanism by cooperating with a front lifting ear and a rear lifting ear. In addition, a lower quick-release block is arranged between a lower connecting column and a seat body. After the upper quick-release block and the lower quick-release block are removed, the lower steel strip can be quickly taken out from the dry electrode rolling mechanism. The upper and lower steel strips can be installed and removed without welding, which reduces the difficulty of removing the upper and lower steel strips from a frame, improves the maintenance efficiency of the dry electrode rolling mechanism, and reduces the influence of the installation and removal of the upper and lower steel strips on the production progress.

Description

Technical Field

[0001] The present invention relates to the technical field of dry electrode production equipment, and in particular to a dry electrode rolling mechanism, a production line and a steel strip disassembly and installation method. Background Art

[0002] In the field of dry electrode forming technology, the double steel belt rolling mechanism is used to press the raw materials into thin films, which not only improves the volume energy density of the battery, but also has an important impact on the overall performance of the battery. The design of this equipment usually includes two parallel steel belts, which are driven by a motor and run at a certain speed. Through the interaction between the upper and lower steel belts, uniform pressure is applied to the material placed between them, thereby achieving material compaction and film forming.

[0003] However, the steel strips in the double steel strip rolling mechanism are subjected to high pressure for a long time, which is prone to deformation or fatigue. In order to maintain production quality and equipment stability, the steel strips need to be replaced or maintained regularly. Since the steel strips are usually welded and fixed inside the rolling mechanism, and the double steel strip rolling mechanism is very large, the maintenance of the steel strips in the past required cutting the steel strips and then welding them. It required experienced workers to achieve accurate welding, which was difficult to achieve and delayed the maintenance efficiency of the double steel strip rolling mechanism, affecting production progress. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a dry electrode rolling mechanism, a production line and a steel strip disassembly and installation method that are convenient for disassembling a steel strip.

[0005] The first technical solution adopted by the present invention to solve its technical problem is:

[0006] A dry electrode rolling mechanism, comprising a frame with left and right ends being open, an upper rolling module, a lower rolling module, an upper steel belt, a lower steel belt and a rolling channel;

[0007] The upper rolling module is arranged above the lower rolling module;

[0008] The rack frame includes an upper surface, a lower surface, an upper connecting column, a lower connecting column, a seat body, an upper quick-release block, a lower quick-release block, a front lifting ear, and a rear lifting ear;

[0009] The upper rolling module and the lower rolling module are installed in the frame, and the upper steel strip is arranged to roll and fit the upper rolling module;

[0010] The upper steel belt is sleeved outside the upper rolling module and rotates around the upper surface;

[0011] The lower steel belt is sleeved outside the lower rolling module and rotates around the lower surface;

[0012] There are at least two front lifting ears, which are arranged on the front side of the upper surface and located on one side of the upper steel belt; there are at least two rear lifting ears, which are arranged on the rear side of the upper surface and located on the other side of the upper steel belt;

[0013] The rolling channel is located in the frame and is arranged between the upper steel belt and the lower steel belt;

[0014] The upper quick-release blocks include at least two, and the upper quick-release blocks are arranged between the upper connecting column and the lower connecting column; and the upper quick-release blocks are located on the same side of the upper steel belt and the lower steel belt;

[0015] The lower quick-release blocks include at least two, and the lower quick-release blocks are arranged between the lower surface and the seat body; and the lower quick-release blocks are located on the same side of the upper steel belt and the lower steel belt.

[0016] The second technical solution adopted by the present invention to solve its technical problem is:

[0017] A method for disassembling an upper steel strip of a dry electrode rolling mechanism, comprising the above-mentioned dry electrode rolling mechanism, wherein the method for disassembling an upper steel strip comprises:

[0018] S1.1. Release the fixation between the upper quick-release block and the upper connecting column and the lower connecting column;

[0019] S1.2, lifting the front lifting ears and the rear lifting ears, and applying an upward force to the rack frame;

[0020] S1.3, take out the upper quick-release block;

[0021] S1.4. Release the front lifting lug and only lift the rear lifting lug;

[0022] S1.5. Take out the upper steel belt from the front of the frame;

[0023] S1.6. Install the quick-release block.

[0024] The third technical solution adopted by the present invention to solve its technical problem is:

[0025] A method for disassembling a lower steel strip of a dry electrode rolling mechanism, comprising the above-mentioned dry electrode rolling mechanism, wherein the method for disassembling the lower steel strip comprises:

[0026] S2.1. Release the fixation between the upper quick-release block and the upper connecting column and the lower connecting column, and release the support between the lower quick-release block and the lower surface and the seat body;

[0027] S2.2, lifting the front lifting ears and the rear lifting ears, applying an upward force to the rack frame, and lifting the lower surface;

[0028] S2.3, take out the lower quick release block and the upper quick release block;

[0029] S2.4. Take out the lower steel belt from the front of the frame;

[0030] S2.5. Install the upper quick-release block and the lower quick-release block.

[0031] The fourth technical solution adopted by the present invention to solve its technical problem is:

[0032] A dry electrode production line is provided with a material extrusion device, the above-mentioned rolling mechanism, a secondary thinning and compounding mechanism, a winding mechanism and a film supply mechanism in sequence along the material transmission direction;

[0033] Among them, the extrusion device is used to mix and shear the powder to form an electrode mixture; the dry rolling mechanism is used to roll the electrode mixture into a thick film sheet; the secondary thinning and composite mechanism is used to roll the thick film sheet into a thin film sheet, and composite the thin film sheet or the single-sided electrode film with the current collector film to form a composite film; the film supply mechanism is used to provide the current collector film or the single-sided electrode film to the secondary thinning and composite mechanism, and the winding mechanism is used to wind up the composite film.

[0034] The beneficial effects of the present invention are:

[0035] An upper quick-release block is arranged between the upper connecting column and the lower connecting column, and the upper steel strip can be quickly taken out from the rolling mechanism by cooperating with the front lifting ear and the rear lifting ear; and a lower quick-release block is arranged between the lower connecting column and the seat body, and the lower steel strip can be quickly taken out from the rolling mechanism after the upper quick-release block and the lower quick-release block are removed; the installation and removal of the upper and lower steel strips do not require welding, which reduces the difficulty of removing the upper and lower steel strips from the frame, improves the maintenance efficiency of the rolling mechanism, and reduces the influence of the installation and removal of the upper and lower steel strips on the production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the dry electrode rolling mechanism;

[0038] Figure 2 This is one of the three-dimensional structural diagrams of the dry electrode rolling mechanism (the upper rolling module and the lower rolling module are omitted);

[0039] Figure 3 This is the second schematic diagram of the three-dimensional structure of the dry electrode rolling mechanism (the upper rolling module and the lower rolling module are omitted);

[0040] Figure 4 yes Figure 2 A magnified view of the structure of the middle A part;

[0041] Figure 5 yes Figure 2 A magnified view of the structure of the middle B section;

[0042] Figure 6 yes Figure 2 A magnified view of the structure of the middle C section;

[0043] Figure 7 yes Figure 2 A magnified view of the structure of the middle D section;

[0044] Figure 8 yes Figure 3 The structure of the middle E part is enlarged;

[0045] Fig. 9 yes Figure 3 A magnified view of the structure of the middle F section;

[0046] Fig.10 yes Figure 3 A magnified view of the structure of the middle G section;

[0047] Fig.11 yes Figure 3 A magnified view of the structure of the middle H section;

[0048] Fig.12 It is a cross-sectional view of a dry electrode rolling mechanism;

[0049] Fig.13 is a schematic diagram of the structure of the upper / lower ultrasonic detector;

[0050] Fig.14 It is one of the structural schematic diagrams of the upper rolling module and the lower rolling module;

[0051] Fig.15 This is the second structural schematic diagram of the upper pressing module and the lower pressing module;

[0052] Fig.16 This is the third structural diagram of the upper rolling module and the lower rolling module;

[0053] Fig.17 is a cross-sectional view of an upper rolling module and a lower rolling module;

[0054] Fig.18 It is a structural diagram of a dry electrode production line;

[0055] Fig.19 It is one of the structural schematic diagrams of the secondary thinning composite mechanism;

[0056] Fig. 20 It is a cross-sectional view of the secondary thinning composite mechanism (housing omitted);

[0057] Fig.21This is the second structural diagram of the secondary thinning composite mechanism;

[0058] Fig. 22 It is a structural schematic diagram of a tension roller group;

[0059] Fig.23 It is a structural schematic diagram of a fine cutter group;

[0060] Fig.24 It is a structural schematic diagram of a winding mechanism and a film supply mechanism;

[0061] Fig.25 It is one of the partial structural diagrams of the winding mechanism and the film supply mechanism;

[0062] Fig.26 This is the second schematic diagram of the partial structure of the winding mechanism and the film supply mechanism;

[0063] Fig. 27 yes Figure 2 A magnified view of the structure of the middle part I;

[0064] Fig.28 yes Figure 3 A magnified view of the structure of the middle J section;

[0065] Fig.29 yes Figure 1 A magnified view of the structure of the middle K section;

[0066] Fig.30 yes Figure 1 A magnified view of the structure of the middle L part;

[0067] Fig.31 yes Fig.15 A magnified view of the structure of the middle M part;

[0068] Fig.32 yes Fig. 20 A magnified view of the structure of the middle N part;

[0069] Fig.33 It is a structural schematic diagram of the base plate and the pressing piece. DETAILED DESCRIPTION

[0070] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0071] In the existing installation of double steel belts, the steel belt is brought into the frame frame 1 for one circle and then a welding gun is used to weld the steel belt into a complete circle. The maintenance time of this method is too long, often exceeding 24 hours, and the personnel need to have high welding ability. At the same time, on-site welding will also cause step differences and welds at the welding points, affecting the thickness uniformity of the rolled diaphragm.

[0072] Reference Figure 1-Figure 2 A dry electrode rolling mechanism 200 comprises a frame 1 with left and right ends being open, an upper rolling module 2, a lower rolling module 3, an upper steel belt 4, a lower steel belt 5 and a rolling channel 6; the upper rolling module 2 is arranged above the lower rolling module 3;

[0073] The rack frame 1 includes an upper surface 11, a lower surface 12, an upper connecting column 13, a lower connecting column 14, a seat body 15, an upper quick-release block 16, a lower quick-release block 17, a front lifting ear 18 and a rear lifting ear 19; the upper rolling module 2 and the lower rolling module 3 are installed in the rack frame 1, and the upper steel belt 4 is arranged to roll in contact with the upper rolling module 2; the upper steel belt 4 is sleeved outside the upper rolling module 2 and rotates around the upper surface 11; the lower steel belt 5 is sleeved outside the lower rolling module 3 and rotates around the lower surface 12.

[0074] There are at least two front lifting ears 18, which are arranged on the front side of the upper surface 11 and located on one side of the upper steel belt 4; there are at least two rear lifting ears 19, which are arranged on the rear side of the upper surface 11 and located on the other side of the upper steel belt 4;

[0075] The rolling channel 6 is located in the frame 1 and is arranged between the upper steel belt 4 and the lower steel belt 5;

[0076] The upper quick-release blocks 16 include at least two, and the upper quick-release blocks 16 are arranged between the upper connecting column 13 and the lower connecting column 14; and the upper quick-release blocks 16 are located on the same side of the upper steel belt 4 and the lower steel belt 5; the lower quick-release blocks 17 include at least two, and the lower quick-release blocks 17 are arranged between the lower surface 12 and the seat body 15; and the lower quick-release blocks 17 are located on the same side of the upper steel belt 4 and the lower steel belt 5.

[0077] An upper quick-release block 16 is provided between the upper connecting column 13 and the lower connecting column 14, and in cooperation with the front lifting ear 18 and the rear lifting ear 19, the upper steel strip 4 can be quickly removed from the dry electrode rolling mechanism 200; and a lower quick-release block 17 is provided between the lower connecting column 14 and the base body 15, and after removing the upper quick-release block 16 and the lower quick-release block 17, the lower steel strip 5 can be quickly removed from the dry electrode rolling mechanism 200; in this embodiment, no welding is required for installing and removing the upper steel strip 4 and the lower steel strip 5, which reduces the difficulty of removing the upper steel strip 4 and the lower steel strip 5 from the frame frame 1, improves the maintenance efficiency of the dry electrode rolling mechanism 200, and reduces the negative impact of installing and removing the upper steel strip 4 and the lower steel strip 5 on the production progress.

[0078] Furthermore, the use of the device in this embodiment can avoid the formation of welds and steps on the upper steel belt 4 or the lower steel belt 5, reducing the maintenance time and eliminating the need for on-site operation capabilities, thereby reducing the maintenance time. At the same time, the upper steel belt 4 and the lower steel belt 5 have no step difference, which can effectively improve the film forming accuracy under continuous production conditions.

[0079] The existing steel belt will wear against the positive and negative electrode materials during the rolling process, causing the ordinary steel belt to mix the worn particles into the positive and negative electrode materials. As a result, the mixed particles can be clearly found during the actual measurement under the electron microscope. Therefore, in order to solve the wear problem, the upper steel belt 4 and the lower steel belt 5 in this embodiment use high-strength 630 stainless steel belt as the material. The material is a high-performance and high-wear material, which can effectively reduce the mixing of wear materials into the positive and negative electrode materials, greatly improving the product qualification rate.

[0080] Reference Figure 1 In one embodiment, the base body 15 is provided with a transport slot 150. The transport slot 150 can be used as a forklift position or a hoisting position to facilitate the movement of the dry electrode rolling mechanism 200.

[0081] Reference Figure 2In one embodiment, the upper surface 11 further includes a front crossbeam 111, a rear crossbeam 112, a left connecting column 113 and a right connecting column 114; the front crossbeam 111 is parallel to the rear crossbeam 112, and the left connecting column 113 and the right connecting column 114 are parallel to each other; the front crossbeam 111, the rear crossbeam 112, the left connecting column 113 and the right connecting column 114 are all located in the same horizontal plane; the front lifting ear 18 and the rear lifting ear 19 are installed on the left connecting column 113 and the right connecting column 114; the front crossbeam 111 is detachably arranged between the left connecting column 113 and the right connecting column 114, so as to facilitate the upper rolling module 2 to be taken out from the rack frame 1;

[0082] Reference Figure 1 In one embodiment, one end of the rolling channel 6 is a feed port 61, and the other end of the rolling channel 6 is a discharge port 62; along the direction from the feed port 61 to the discharge port 62, the distance between the upper steel belt 4 and the lower steel belt 5 on the rolling channel 6 gradually decreases. The surface rolling of the upper steel belt 4 and the lower steel belt 5 cooperates to thin the membrane step by step, which can improve the uniformity of the membrane, prevent the membrane from being brittle, and achieve a better one-time film thickness limit;

[0083] Reference Fig.14 Specifically, the upper rolling module 2 includes a first upper roller group 21, a second upper roller group 22 and a third upper roller group 23 arranged side by side; the lower rolling module 3 includes a first lower roller group 31 arranged below the first upper roller group 21, a second lower roller group 32 arranged below the second upper roller group 22, and a third lower roller group 33 arranged below the third upper roller group 23;

[0084] As the rolling channel 6 gradually decreases, the width of the diaphragm also gradually increases. In order to prevent the two sides of the diaphragm from being squeezed out in the dry electrode rolling mechanism 200, the widths of the first upper roller group 21, the second upper roller group 22 and the third upper roller group 23 increase successively from the feed port 61 to the discharge port 62; the widths of the first lower roller group 31, the second lower roller group 32 and the third lower roller group 33 increase successively.

[0085] Reference Figure 1 , Figure 29 to Figure 30In one embodiment, the upper quick-release block 16 includes a first rectangular upper plane 161, a first rectangular lower plane 162, and a first connecting platform 163 disposed between the first rectangular upper plane 161 and the first rectangular lower plane 162; the cross-sectional area of ​​the first connecting platform 163 is smaller than the cross-sectional area of ​​the first rectangular upper plane 161 and the first rectangular lower plane 162; in this way, there is sufficient operating space at the upper and lower ends of the first connecting platform 163; the first rectangular upper plane 161 is detachably connected to the upper connecting column 13, and the first rectangular lower plane 162 is The lower connecting column 14 is detachably connected; the first rectangular upper plane 161 is detachably provided with a first upper fixing member 164 detachably connected to the upper connecting column 13 on one side facing the first rectangular lower plane 162, and the first upper fixing member 164 is arranged on each corner of the first rectangular upper plane 161; the first rectangular lower plane 162 is detachably provided with a first lower fixing member 165 detachably connected to the lower connecting column 14 on one side facing the first rectangular upper plane 161, and the first lower fixing member 165 is arranged on each corner of the first rectangular lower plane 162. The first upper fixing member 164 and the first lower fixing member 165 can be taken and placed on one side of the first connecting platform 163 and between the first rectangular upper plane 161 and the first rectangular lower plane 162; specifically, the first upper fixing member 164 and the first lower fixing member 165 are screws, which are simple to operate and convenient and quick.

[0086] In one embodiment, the lower quick-release block 17 includes a second rectangular upper plane 171, a second rectangular lower plane 172, and a second connecting platform 173 arranged between the second rectangular upper plane 171 and the second rectangular lower plane 172; the cross-sectional area of ​​the second connecting platform 173 is smaller than the cross-sectional area of ​​the second rectangular upper plane 171 and the second rectangular lower plane 172; the second rectangular upper plane 171 is detachably connected to the lower connecting column 14, and the second rectangular lower plane 172 is detachably connected to the seat body 15; the second rectangular upper plane 171 is detachably provided with a second upper fixing member 174 detachably connected to the lower connecting column 14 on the side facing the second rectangular lower plane 172, and the second upper fixing member 174 is arranged on each corner of the second rectangular upper plane 171; the second rectangular lower plane 172 is detachably provided with a second lower fixing member 175 detachably connected to the seat body 15 on the side facing the second rectangular upper plane 171, and the second lower fixing member 175 is arranged on each corner of the second rectangular lower plane 172. The first upper fixing member 164 and the first lower fixing member 165 can be taken in and placed on one side of the second connecting platform 173 and between the second rectangular upper plane 171 and the second rectangular lower plane 172; specifically, the second upper fixing member 174 and the second lower fixing member 175 are screws, which are simple, convenient and quick to operate.

[0087] Reference Fig.14 Specifically, it also includes a first upper heater 71, a second upper heater 72, a third upper heater 73, a fourth upper heater 74, a first lower heater 75, a second lower heater 76, a third lower heater 77 and a fourth lower heater 78; together heat the upper steel belt 4 and the lower steel belt 5, and the upper steel belt 4 and the lower steel belt 5 transfer heat to the material after being heated, heat the material, keep the film at a high temperature, so that the adhesive in the material can be fully activated, easy to form a film, and prevent the film from breaking or cracking; the first upper heater 71 is fixedly arranged on the left side of the first upper roller group 21; the first lower heater 75 is fixedly arranged on the left side of the first lower roller group 31; the first One end of the second upper heater 72 is fixed to the right side of the first upper roller group 21, and the other end is fixed to the left side of the second upper roller group 22; one end of the second lower heater 76 is fixed to the right side of the first lower roller group 31, and the other end is fixed to the left side of the second lower roller group 32; one end of the third upper heater 73 is fixed to the right side of the second upper roller group 22, and the other end is fixed to the left side of the third upper roller group 23; one end of the third lower heater 77 is fixed to the right side of the second lower roller group 32, and the other end is fixed to the left side of the third lower roller group 33; the fourth upper heater 74 is fixed to the right side of the third upper roller group 23; the fourth lower heater 78 is fixed to the right side of the third lower roller group 33. The heaters are continuously arranged between the roller groups, which helps to keep the film heated continuously, prevent the film from breaking or cracking during the production process, and improve the overall stability and consistency of the product.

[0088] Specifically, the first upper heater 71 , the second upper heater 72 , the third upper heater 73 , the fourth upper heater 74 , the first lower heater 75 , the second lower heater 76 , the third lower heater 77 and the fourth lower heater 78 are all infrared heaters.

[0089] Reference Figure 1 , Figure 2 , Fig.12In one embodiment, an upper panel 101 is provided on the outer side of the frame frame 1 and on one side of the upper rolling module 2; a front upper deviation correction driving member 811, a rear upper deviation correction driving member 812, an upper mounting plate 813 obliquely mounted on the upper panel 101, a front upper slide rail 814 and a rear upper slide rail 815 vertically mounted on the upper mounting plate 813 are installed on the upper panel 101; a front upper slider (not shown in the figure) is slidably provided in the front upper slide rail 814, and a rear upper slider (not shown in the figure) is slidably provided in the rear upper slide rail 815; an upper deviation correction roller 818 is rotatably connected between the front upper slider and the rear upper slider, and the upper The deflection correction roller 818 is in rolling contact with the upper steel belt 4; the extension directions of the front upper deflection correction driving member 811 and the rear upper deflection correction driving member 812 are arranged toward the upper surface 11; the output end of the front upper deflection correction driving member 811 passes through the upper mounting plate 813 and is fixedly connected to the front upper slider, and the front upper deflection correction driving member 811 is used to drive the front upper slider to slide on the front upper slide rail 814; the output end of the rear upper deflection correction driving member 812 passes through the upper mounting plate 813 and is fixedly connected to the rear upper slider, and the rear upper deflection correction driving member 812 is used to drive the rear upper slider to slide on the rear upper slide rail 815;

[0090] Reference Fig.13 An upper ultrasonic side group 83 is installed on the upper surface 11, and the upper ultrasonic side group 83 is communicated with the front upper correcting drive member 811 and the rear upper correcting drive member 812; the upper ultrasonic side group 83 includes an upper U-shaped frame 831 and a first position adjustment group 832 for adjusting the upper U-shaped frame 831, and long strips of upper ultrasonic detectors 833 are provided on both ends of the upper U-shaped frame 831 that are relatively arranged; the first position adjustment group 832 is specifically an L-shaped frame, and the position where the L-shaped frame is to be fixed can be selected by screws, thereby adjusting the position of the upper ultrasonic detector 833 to adapt to upper steel belts 4 of different widths; the edge of the upper steel belt 4 is located between the two upper ultrasonic detectors 833.

[0091] When the upper ultrasonic side group 83 detects that the upper steel belt 4 is offset, the rear upper deviation correction drive member 812 or the front upper deviation correction drive member 811 indirectly drives the two ends of the upper deviation correction roller 818 to swing, so that the upper steel belt 4 always remains in the middle of the upper deviation correction roller 818, thereby preventing the upper steel belt 4 from deviating.

[0092] Reference Figure 1 , Figure 2 , Fig.12In one embodiment, a lower panel 102 is provided on the outer side of the frame frame 1 and on one side of the lower rolling module 3; a front lower deviation correction driving member (not shown in the figure), a rear lower deviation correction driving member (not shown in the figure), a lower mounting plate (not shown in the figure) obliquely mounted under the lower panel 102, a front lower slide rail (not shown in the figure) and a rear lower slide rail (not shown in the figure) vertically mounted under the lower mounting plate are installed under the lower panel 102; a front lower slider (not shown in the figure) is slidably disposed in the front lower slide rail, and a rear lower slider (not shown in the figure) is slidably disposed in the rear lower slide rail; a lower deviation correction roller (not shown in the figure) is rotatably connected between the front lower slider and the rear lower slide rail, and the lower deviation correction roller is in rolling contact with the lower steel belt 5;

[0093] The extension directions of the front lower deflection correction driving member and the rear lower deflection correction driving member are arranged toward the lower surface 12; the output end of the front lower deflection correction driving member passes through the lower mounting plate and is fixedly connected to the front lower slider, and the front lower deflection correction driving member is used to drive the front lower slider to slide on the front lower slide rail; the output end of the rear lower deflection correction driving member passes through the lower mounting plate and is fixedly connected to the rear lower slider, and the rear lower deflection correction driving member is used to drive the rear lower slider to slide on the rear lower slide rail;

[0094] Reference Fig.13 , a lower ultrasonic side group 84 is installed on the lower surface 12, and the lower ultrasonic side group 84 is communicated with the front lower correction drive member and the rear lower correction drive member; the lower ultrasonic side group 84 includes a lower U-shaped frame 841 and a second position adjustment group 844 for adjusting the lower U-shaped frame 841, and both ends of the lower U-shaped frame 841 are relatively arranged with a long strip of lower ultrasonic detectors 842; the structure and function of the second position adjustment group 844 are the same as the first position adjustment group 832; when the lower ultrasonic detector 842 detects the deviation of the lower steel belt 5, the rear lower correction drive member or the front lower correction drive member indirectly drives the two ends of the lower correction roller to swing, thereby preventing the lower steel belt 5 from deviating, so that the lower steel belt 5 always remains in the middle of the lower correction roller; the edge of the lower steel belt 5 is located between the two lower ultrasonic detectors 842.

[0095] Reference Figure 3 The lower surface 12 is provided with a lower opening 843 above the lower ultrasonic detector 842 . Since the position between the lower surface 12 and the base 15 is narrow, the lower opening 843 is provided so that there is enough space for adjusting the position of the lower ultrasonic detector 842 .

[0096] Existing steel belts are basically corrected by using detection and adjustment rollers. However, this method tends to stretch both sides of the steel belt, causing the steel belt to become flat in the middle of the two sides. This method reduces the uniformity requirements and speeds up the replacement and maintenance time of the steel belt.

[0097] Reference Figure 2-Figure 11 In one embodiment, the upper panel 101 includes a first mounting panel 115 and a second mounting panel 116, wherein the first mounting panel 115 is disposed on the left side of the rack frame 1, and the second mounting panel 116 is disposed on the right side of the rack frame 1; a first front upper fixing plate 121 disposed perpendicular to the first mounting panel 115 and a first rear upper fixing plate 122 parallel to the first front upper fixing plate 121 are fixed to the first mounting panel 115, and the first rear upper fixing plate 122 is disposed parallel to the first front upper fixing plate 121;

[0098] Reference Figure 4 The first front upper fixing plate 121 is provided with two first front upper slide rails 123 which are arranged perpendicular to the first mounting panel 115 and are parallel to each other. A first front upper tensioning slider 124 is slidably provided on the first front upper slide rail 123. A first front upper oil cylinder driving member 128 is fixedly provided at one end of the first front upper slide rail 123. The output end of the first front upper oil cylinder driving member 128 is fixedly connected to the first front upper tensioning slider 124.

[0099] Reference Fig.10 The first rear upper fixing plate 122 is provided with two first rear upper slide rails 125 which are parallel to each other and are arranged perpendicular to the first mounting panel 115. A first rear upper tensioning slider 126 is slidably provided on the first rear upper slide rail 125. A first rear upper oil cylinder driving member 127 is fixedly provided at one end of the first rear upper slide rail 125. The output end of the first rear upper oil cylinder driving member 127 is fixedly connected to the first rear upper tensioning slider 126. The first rear upper oil cylinder driving member 127 is used to drive the first rear upper tensioning slider 126 to slide on the first rear upper slide rail 125.

[0100] Reference Figure 4 , Fig.10 A first front upper tensioning roller 129 is rotatably provided between the first front upper tensioning slider 124 and the first rear upper tensioning slider 126, the first front upper oil cylinder driving member 128 drives the first front upper tensioning slider 124 to slide on the first front upper slide rail 123, and the first rear upper oil cylinder driving member 127 drives the first rear upper tensioning slider 126 to slide on the first rear upper slide rail 125, thereby tensioning the upper steel belt 4; refer to Figure 2 , Figure 3 , Figure 6 , Figure 8 A second upper front fixing plate 131 arranged perpendicular to the second fixing panel 116 and a second upper rear fixing plate 132 parallel to the second upper front fixing plate 131 are fixed on the second fixing panel 116, and the second upper rear fixing plate 132 is arranged parallel to the second upper front fixing plate 131;

[0101] Reference Figure 6 The second front upper fixing plate 131 is provided with two second front upper slide rails 133 which are parallel to each other and are arranged perpendicularly to the second mounting panel 116. A second front upper tensioning slider 134 is slidably arranged on the second front upper slide rail 133. A second front upper oil cylinder driving member 138 is fixedly arranged at one end of the second front upper slide rail 133. The output end of the second front upper oil cylinder driving member 138 is fixedly connected to the second front upper tensioning slider 134.

[0102] Reference Figure 8 The second rear upper fixed plate 132 is provided with two mutually parallel second rear upper slide rails 135 which are arranged perpendicular to the second mounting panel 116, and a second rear upper tensioning slider 136 is slidably provided on the second rear upper slide rail 135, and a second rear upper oil cylinder driving member (not shown in the figure) is fixedly provided at one end of the second rear upper slide rail 135, and the output end of the second rear upper oil cylinder driving member is fixedly connected to the second rear upper tensioning slider 136; a second front upper tensioning roller 139 is rotatably provided between the second front upper tensioning slider 134 and the second rear upper tensioning slider 136, and the second front upper tensioning roller 139 is rollingly fitted with the upper steel belt 4, and the second rear upper oil cylinder driving member drives the second rear upper tensioning slider 136 to slide on the second rear upper slide rail 135, and the second front upper oil cylinder driving member 138 drives the second front upper tensioning slider 134 to slide on the second front upper slide rail 133, so as to tension the upper steel belt 4 and prevent the upper steel belt 4 from running off.

[0103] Reference Figure 8-Figure 9 More specifically, it also includes an upper steel belt driving component 145 for driving the upper steel belt 4 to rotate, and the upper steel belt driving component 145 is arranged on the first front upper tensioning slider 124, the first rear upper tensioning slider 126, the second front upper tensioning slider 134 or the second rear upper tensioning slider 136.

[0104] Reference Figure 2-Figure 11 as well as Fig.28More specifically, a first scraper frame 141 is fixedly provided between the second front upper fixing plate 131 and the second rear upper fixing plate 132, and a first scraper 142 is provided on the first scraper frame 141. The first scraper 142 is located on the outer surface of the upper steel belt 4 in rolling contact with the first front upper tensioning roller 129, and is used to scrape off the film material on the upper steel belt 4; the two ends of the first scraper 142 are arranged through the first scraper frame 141, and the two ends of the first scraper 142 are fixedly connected to the first connecting arm 143, and the first connecting arm 143 is away from the first scraper 142. One end of the first extension spring 144 is rotatably connected to the first extension spring 144, and one end of the first extension spring 144 away from the first connecting arm 143 is fixed to the roller core above the first scraper 142 and close to the first front upper tensioning roller 129; the first extension spring 144 drives the first connecting arm 143 to swing, thereby driving the first scraper 142 to rotate relative to the first scraper frame 141, so that the first scraper 142 always adheres to the outer surface of the upper steel belt 4, scrapes off the film material adhering to the outer surface of the upper steel belt 4, and prevents the film material from affecting the heat transfer of the upper steel belt 4 and affecting the heating of the film material in the rolling channel 6;

[0105] Reference Figure 2-Figure 12 In one embodiment, the lower panel 102 includes a third mounting panel 117 and a fourth mounting panel 118, the third mounting panel 117 is arranged on the left side of the rack frame 1, and the fourth mounting panel 118 is arranged on the right side of the rack frame 1;

[0106] Reference Figure 5 , Fig.11 The third mounting panel 117 is fixed with a first front lower fixing plate 151 which is arranged perpendicularly to the third mounting panel 117, and a first rear lower fixing plate 152 which is parallel to the first front lower fixing plate 151; the first front lower fixing plate 151 is provided with two mutually parallel first front lower slide rails 153 which are arranged perpendicularly to the third mounting panel 117, the first front lower slide rail 153 is slidably provided with a first front lower tensioning slider 154, one end of the first front lower slide rail 153 is fixedly provided with a first front lower oil cylinder driving member 158, and the output end of the first front lower oil cylinder driving member 158 is fixedly connected with the first front lower tensioning slider 154;

[0107] Reference Fig.11, the first rear lower fixed plate 152 is detachably provided with two mutually parallel first lower rails 155 arranged perpendicular to the third mounting panel 117, a first rear lower tensioning slider 156 is slidably provided on the first lower rail 155, a first rear lower oil cylinder driving member 157 is fixedly provided at one end of the first lower rail 155, an output end of the first rear lower oil cylinder driving member 157 is fixedly connected with the first rear lower tensioning slider 156, the first rear lower oil cylinder driving member 157 is used to drive the first rear lower tensioning slider 156 to slide on the first lower rail 155; a first front lower tensioning roller 159 is rotatably provided between the first front lower tensioning slider 154 and the first rear lower tensioning slider 156, the first front lower oil cylinder driving member 158 drives the first front lower tensioning slider 154 to slide on the first front lower rail 153, and the first rear lower oil cylinder driving member 157 drives the first rear lower tensioning slider 156 to slide on the first lower rail 155, thereby tensioning the lower steel belt 5 to prevent the lower steel belt 5 from deviating.

[0108] Reference Figure 7 , Fig. 9 The fourth installation panel 118 is fixed with a second front lower fixing plate 181 which is arranged perpendicularly to the fourth installation panel 118, and a second rear lower fixing plate 182 which is parallel to the second front lower fixing plate 181, and the second rear lower fixing plate 182 is arranged parallel to the second front lower fixing plate 181; the second front lower fixing plate 181 is detachably provided with two second front lower sliding rails 183 which are arranged perpendicularly to the fourth installation panel 118, and a second front lower tensioning slider 184 is slidably provided on the second front lower sliding rail 183, and a second front lower oil cylinder driving member is fixedly provided at one end of the second front lower sliding rail 183, and the output end of the second front lower oil cylinder driving member is fixedly connected to the second front lower tensioning slider 184;

[0109] Reference Fig. 9 , the second rear lower fixed plate 182 is provided with two second rear lower sliding rails 185 which are parallel to each other and are arranged perpendicular to the fourth mounting panel 118, a second rear lower tensioning slider 186 is slidably provided on the second rear lower sliding rail 185, a second rear lower oil cylinder driving member is fixedly provided at one end of the second rear lower sliding rail 185, and an output end of the second rear lower oil cylinder driving member is fixedly connected to the second rear lower tensioning slider 186; a second front lower tensioning roller 189 is rotatably provided between the second front lower tensioning slider 184 and the second rear lower tensioning slider 186, the second front lower tensioning roller 189 is rollingly fitted with the lower steel belt 5, the second rear lower oil cylinder driving member drives the second rear lower tensioning slider 186 to slide on the second rear lower sliding rail 185, and the second front lower oil cylinder driving member drives the second front lower tensioning slider 184 to slide on the second front lower sliding rail 183, so as to tension the lower steel belt 5;

[0110] This embodiment uses an ultrasonic margin measurement method, and uses the upper deviation correction roller 818 and the lower deviation correction roller to adjust at the same time, and the steel belt fixed roller is changed to the first front upper tensioning roller 129, the second front upper tensioning roller 139, the first front lower tensioning roller 159 and the second front lower tensioning roller 189. During the deviation correction process of the steel belt, the tension strength is adjusted at the same time, so that the upper steel belt 4 and the lower steel belt 5 have a certain tension force while eliminating the influence of curling; and the time cycle of steel belt replacement is extended;

[0111] Reference Figure 2 , Figure 5 , Fig.11 as well as Fig. 27 More specifically, a second scraper frame 191 is fixedly provided between the first front lower fixed plate 151 and the first rear lower fixed plate 152, and a second scraper 192 is provided on the second scraper frame 191. The second scraper 192 is located on the outer surface of the lower steel belt 5 in rolling contact with the first front lower tensioning roller 159, and is used to scrape off the film material on the lower steel belt 5; the two ends of the second scraper 192 are arranged through the second scraper frame 191, and the two ends of the second scraper 192 are fixedly connected to the second connecting arm 193, and the second connecting arm 193 is away from the second scraper 192. One end of the second extension spring 194 is rotatably connected to the second scraper 192, and one end of the second extension spring 194 away from the second connecting arm 193 is fixed to the roller core above the second scraper 192 and close to the first front lower tensioning roller 159; the second extension spring 194 drives the second connecting arm 193 to swing, thereby driving the second scraper 192 to rotate relative to the second scraper frame 191, so that the second scraper 192 always fits the outer surface of the lower steel belt 5, scrapes off the film material adhering to the outer surface of the lower steel belt 5, and prevents the film material from affecting the heat transfer of the lower steel belt 5 and affecting the heating of the film material in the rolling channel 6;

[0112] Reference Fig. 9 More specifically, it also includes a lower steel belt driving component 195 that drives the lower steel belt 5 to rotate. The lower steel belt driving component 195 is arranged on the first front lower tensioning slider 154, the first rear lower tensioning slider 156, the second front lower tensioning slider 184 or the second rear lower tensioning slider 186.

[0113] Therefore, the height of the rolling channel and the thickness of the diaphragm can be adjusted by adjusting the positions of the first front lower fixing plate 151 and the first rear lower fixing plate 152 relative to the third mounting panel 117 and the positions of the second front lower fixing plate 181 and the second rear lower fixing plate 182 relative to the fourth mounting panel 118.

[0114] Reference Figure 15-16In one embodiment, the upper rolling module 2 is fixedly connected to one side of the lower rolling module 3, and the other side of the upper rolling module 2 and the lower rolling module 3 are detachably connected through a connecting block 24. When the upper steel belt 4 or the lower steel belt 5 is to be removed or installed, the upper rolling module 2 is fixedly connected to one side of the lower rolling module 3 as a support, making the removal of the upper steel belt 4 and the lower steel belt 5 more convenient and safe;

[0115] Reference Fig.15 as well as Fig.31 Specifically, the connecting block 24 has a stable platform 240 protruding from the upper rolling module 2 and the lower rolling module 3. Taking the installation of the second upper heater 72 as an example, the second upper heater 72 is placed on the stable platform 240, and then the second upper heater 72 is fixed on the upper rolling module 2, so that each heater can be installed conveniently and quickly.

[0116] Reference Figure 15-17 The upper rolling module 2 includes an upper roller frame 241, a first front upper roller mounting plate 242 and a first rear upper roller mounting plate 243 installed in the upper roller frame 241, a second front upper roller mounting plate 244 arranged below the first front upper roller mounting plate 242, and a second rear upper roller mounting plate 245 arranged below the first rear upper roller mounting plate 243; an upper back roller 246 rotatably mounted on the first front upper roller mounting plate 242 and the first rear upper roller mounting plate 243 at both ends, and an upper rolling roller 247 rotatably mounted on the second front upper roller mounting plate 244 and the second rear upper roller mounting plate 245 at both ends;

[0117] It also includes a first front roller gap adjusting member 248 and a first rear roller gap adjusting member 249. One end of the first front roller gap adjusting member 248 is connected to the first front upper roller mounting plate 242, and the other end is connected to the second front upper roller mounting plate 244; one end of the first rear roller gap adjusting member 249 is connected to the first rear upper roller mounting plate 243, and the other end is connected to the second rear upper roller mounting plate 245; the first front roller gap adjusting member 248 and the first rear roller gap adjusting member 249 extend or retract to adjust the position of the upper calendering roller 247 relative to the upper back roller 246;

[0118] The lower rolling module 3 includes a lower roller frame 341, a first front lower roller mounting plate 342 and a first rear lower roller mounting plate 343 installed in the lower roller frame 341, a second front lower roller mounting plate 344 arranged above the first front lower roller mounting plate 342, and a second rear lower roller mounting plate 345 arranged above the first rear lower roller mounting plate 343;

[0119] A lower backing roller 346 rotatably mounted on the first front lower roller mounting plate 342 and the first rear lower roller mounting plate 343 at both ends, and a lower rolling roller 347 rotatably mounted on the second front lower roller mounting plate 344 and the second rear lower roller mounting plate 345 at both ends;

[0120] The second roller gap adjusting member 348 and the second roller gap adjusting member 349 are also included. One end of the second roller gap adjusting member 348 is connected to the first front lower roller mounting plate 342, and the other end is connected to the second front lower roller mounting plate 344; one end of the second rear roller gap adjusting member 349 is connected to the first rear lower roller mounting plate 343, and the other end is connected to the second rear lower roller mounting plate 345;

[0121] The second front roller gap adjusting member 348 and the second rear roller gap adjusting member 349 extend or retract to adjust the position of the lower rolling roller 347 relative to the lower backing roller 346;

[0122] The upper backing roller 246 rotates in close contact with the upper rolling roller 247, and the lower backing roller 346 rotates in close contact with the lower rolling roller 347. The roller diameter of the upper backing roller 246 is larger than the roller diameter of the upper rolling roller 247, and the roller diameter of the lower backing roller 346 is larger than the roller diameter of the lower rolling roller 347, which can reduce the deflection deformation of the lower rolling roller 347 and the upper rolling roller 247; the upper rolling roller 247 applies pressure to the upper steel belt 4, and the lower rolling roller 347 applies pressure to the lower steel belt 4 to roll the film material;

[0123] More specifically, an upper roller group driving component 250 is provided at one end of the upper backing roller 246 and the upper rolling roller 247 away from the connecting block 24; a lower roller group driving component 260 is provided at one end of the lower backing roller 346 and the lower rolling roller 347 away from the connecting block 24;

[0124] More specifically, the first front lower roller mounting plate 342 and the first rear lower roller mounting plate 343 are slidably connected to the lower roller frame 341; the first front upper roller mounting plate 242 and the first rear upper roller mounting plate 243 are slidably connected to the upper roller frame 241;

[0125] More specifically, an upper roller group positioning block 251 is provided on the first front upper roller mounting plate 242 and the first rear upper roller mounting plate 243, a part of the upper roller group positioning block 251 is fixed on the upper roller frame 241, and another part of the upper roller group positioning block 251 protrudes from the upper roller frame 241; the upper roller group positioning block 251 is arranged along the front and rear ends of the upper back roller 246, so as to prevent the upper back roller 246 and the upper rolling roller 247 from slipping during operation;

[0126] A lower roller group positioning block 261 is provided on the first front lower roller mounting plate 342 and the first rear lower roller mounting plate 343, a part of the lower roller group positioning block 261 is fixed on the lower roller frame 341, and another part of the lower roller group positioning block 261 protrudes from the lower roller frame 341; the lower roller group positioning block 261 is arranged along the front and rear ends of the lower back roller 346, which can prevent the lower back roller 346 and the lower rolling roller 347 from slipping during operation.

[0127] Reference Fig.17 More specifically, a roller scraper 262 is provided on the upper roller frame 241 and the lower roller frame 341 , and the roller scraper 262 is used to scrape off the film material attached to the upper backing roller 246 , the lower backing roller 346 , the upper rolling roller 247 and the lower rolling roller 347 .

[0128] More specifically, the upper roller frame 241 is also provided with an oil cylinder 291, a pressure sensor, a programmable logic controller, a servo valve for controlling the liquid output of the oil cylinder 291, and the upper backing roller 246, the upper rolling roller 247, the lower backing roller 346 and the lower rolling roller 347 are all provided with oil heating channels;

[0129] When in use, first set a set value for the output pressure of the oil cylinder, detect the output pressure of the oil cylinder 291 through the pressure sensor and feed it back to the programmable logic controller, compare it with the set value, and then adjust the output pressure of the hydraulic pump by controlling the servo valve in the hydraulic station according to the comparison result, and then adjust the output pressure of the oil cylinder, and perform closed-loop control on the output pressure.

[0130] The rollers are heated by heating the heat transfer oil through an oil temperature machine, and then transported to the upper backing roller 246, the upper rolling roller 247, the lower backing roller 346 and the lower rolling roller 347 through an oil pipe for heating.

[0131] This embodiment provides a method for disassembling an upper steel strip of a dry electrode rolling mechanism, including any one of the above rolling mechanisms, and the upper steel strip disassembly method includes:

[0132] S1.1, releasing the fixing between the upper quick-release block 16 and the upper connecting column 13 and the lower connecting column 14;

[0133] S1.2, lifting the front lifting ears 18 and the rear lifting ears 19, and applying an upward force to the rack frame 1;

[0134] S1.3, take out the upper quick-release block 16;

[0135] S1.4, release the front lifting ear 18 and only lift the rear lifting ear 19;

[0136] S1.5. Take out the upper steel belt 4 from the front of the frame 1;

[0137] S1.6. Install the quick-release block 16.

[0138] This embodiment provides a method for disassembling a lower steel strip of a dry electrode rolling mechanism, including any one of the above rolling mechanisms, and the method for disassembling the lower steel strip includes:

[0139] S2.1, release the fixation between the upper quick-release block 16 and the upper connecting column 13 and the lower connecting column 14, and release the support between the lower quick-release block 17 and the lower surface 12 and the seat body 15;

[0140] S2.2, lifting the front lifting ears 18 and the rear lifting ears 19, applying an upward force to the rack frame 1, and lifting the lower surface 12;

[0141] S2.3, take out the lower quick-release block 17 and the upper quick-release block 16;

[0142] S2.4. Take out the lower steel belt 5 from the front of the frame 1;

[0143] S2.5. Install the upper quick-release block 16 and the lower quick-release block 17.

[0144] The method is simple and highly operable, can improve work efficiency, and will not cause any damage to the upper steel belt 4 and the lower steel belt 5 during the process.

[0145] Reference Fig.18 A dry electrode production line is provided with a material extrusion device 100, a dry electrode rolling mechanism 200, a secondary thinning and compounding mechanism 300, a winding mechanism 400 and a film supply mechanism 500 in sequence along the material transmission direction;

[0146] Among them, the extrusion device 100 is used to mix and shear powders to form an electrode mixture; the dry electrode rolling mechanism 200 is used to roll the electrode mixture into a thick film sheet; the secondary thinning and composite mechanism 300 is used to roll the thick film sheet into a thin film sheet, and composite the thin film sheet or the single-sided electrode film with the collector film to form a composite film; the film supply mechanism 500 is used to provide the collector film or the single-sided electrode film to the secondary thinning and composite mechanism 300, and the winding mechanism 400 is used to wind up the composite film.

[0147] Reference Fig.19 The secondary thinning and compounding mechanism 300 includes a first frame 63, a thinning roller group 64 detachably connected to the first frame 63, and a compounding roller group 65 detachably connected to the first frame 63;

[0148] The thinning roller set 64 is used to thin the thin film;

[0149] The composite roller group 65 is used to composite the thin film sheet with the current collector to form a single-sided electrode membrane, and to composite the thin film sheet with the single-sided electrode membrane to form a double-sided electrode membrane.

[0150] It is understandable that the above-mentioned composite membrane includes a single-sided electrode membrane and a double-sided electrode membrane.

[0151] The thinning roller group 64 and the composite roller group 65 are both detachably connected to the first frame 63, which is convenient for taking out the thinning roller group 64 and the composite roller group 65, and performing maintenance and cleaning on the thinning roller group 64 and the composite roller group 65; compared with the prior art, in which the thinning roller group 64 and the composite roller group 65 are separately supported by two frames, this embodiment can reduce the setting of one frame, reduce the floor space of the dry-process battery manufacturing equipment, and reduce the manufacturing cost of the equipment.

[0152] Reference Fig. 20 In one embodiment, the thinning roller set 64 includes a thinning back roller 641, a second thinning roller 642 and a first composite roller bracket 643; the thinning back roller 641 and the second thinning roller 642 are both rotatably mounted on the first composite roller bracket 643;

[0153] The composite roller group 65 includes a thinning composite roller support 651 and a thinning composite roller 652 rotatably mounted on the thinning composite roller support 651, a second composite roller support 653 and a second composite roller 654 rotatably mounted on the second composite roller support 653;

[0154] The thinning back roller 641, the second thinning roller 642, the thinning composite roller 652 and the second composite roller 654 are all on a horizontal plane and are arranged adjacent to each other in sequence;

[0155] The second thinning roller 642 and the thinning composite roller 652 jointly thin the film;

[0156] The thinning composite roller 652 and the second composite roller 654 composite the membrane with the single-sided electrode membrane / double-sided electrode membrane;

[0157] The first composite roller bracket 643, the thinning composite roller bracket 651 and the second composite roller bracket 653 are slidably arranged on the first frame 63 through roller slides, and are detachably connected to the first frame 63;

[0158] Reference Fig. 20 , Figure 1 ,7, More specifically, the length of the first composite roller bracket 643 is equal to the length of the upper roller frame 241, the length and roller diameter of the upper back roller 246 are equal to the length and roller diameter of the thinning roller back roller 641, and the length and roller diameter of the lower back roller 346 are equal to the length and roller diameter of the upper calendering roller 247;

[0159] The upper roller frame 241 , the upper backing roller 246 , and the upper calendering roller 247 can be interchanged with the first composite roller bracket 643 , the thinning roller backing roller 641 , and the second thinning roller 642 .

[0160] After the equipment has been in operation for a long time, the roller surface will inevitably be damaged or the roller surface needs to be inspected regularly. When the equipment is used to manufacture large electrodes for new energy vehicles, the corresponding volume of the manufacturing equipment will also be very large. The sliding friction between the first composite roller bracket 643, the thinning composite roller bracket 651 and the second composite roller bracket 653 relative to the first frame 63 is also very large, making it impossible for the operator to take them out directly. However, through the cooperation of the pulley and the slide rail, the friction can be reduced to assist the operator in pulling out each roller.

[0161] Reference Fig. 20 , Fig.21 as well as Fig.32 In one embodiment, a casing 637 is provided on the first composite roller bracket 643. Dust may be generated during the thinning and composite process of the membrane, and the casing 637 can prevent the dust from flying into other equipment in the workshop. In order to facilitate observation of the working conditions, a transparent working window (not shown in the figure) can be provided on the casing 637, or the casing 637 can be set to a fully transparent structure. When the equipment fails to work, the internal conditions can be observed without disassembling the casing 637.

[0162] Specifically, the first composite roller support 643, the thinning composite roller support 651 and the second composite roller support 653 are all provided with rollers 635, and the first frame 63 is correspondingly provided with a slide groove 636;

[0163] Specifically, a first pressure cylinder 661 is provided on the first composite roller bracket 643, and a second pressure cylinder 662 is provided on the second composite roller bracket 653. The output ends of the first pressure cylinder 661 and the second pressure cylinder 662 are arranged opposite to each other. The first pressure cylinder 661 is used to apply pressure to the thinning back roller 641, and the second pressure cylinder 662 is used to apply pressure to the second composite roller 654. The first pressure cylinder 661 and the second pressure cylinder 662 can be used to synchronize the size of the roller gap between each roller, control the thinning thickness of the membrane, and strengthen the tightness of the combination of the thin film and the collector or the single-sided electrode membrane.

[0164] Although the pulley can assist in removing the thinning roller set 64 and the composite roller set 65, it also increases the risk of the first composite roller bracket 643, the thinning composite roller bracket 651 and the second composite roller bracket 653 slipping off the first frame 63 and the risk of displacement during operation of the equipment.

[0165] In order to further solve the above problems, the present embodiment has a better solution: the first frame 63 is provided with a limiting structure for limiting the movement of the first composite roller bracket 643, the thinning composite roller bracket 651 and the second composite roller bracket 653 relative to the first frame 63, so as to prevent the first composite roller bracket 643, the thinning composite roller bracket 651 and the second composite roller bracket 653 from falling due to the vibration resonance generated by the material transmission of the equipment during the operation of the equipment.

[0166] Specifically, the limiting structure includes a first limiting block 663, a second limiting block 664 and a third limiting block 665 which are detachably arranged on the first frame 63;

[0167] The first limit blocks 663 are arranged on both sides of the first frame 63 along the axial direction of the thinning composite roller 652, and are used to fix the position of the thinning composite roller bracket 651 on the first frame 63;

[0168] The second limit blocks 664 are arranged on both sides of the first frame 63 along the axial direction of the second composite roller 654, and are used to fix the position of the second composite roller bracket 653 on the first frame 63;

[0169] The third limit blocks 665 are arranged on both sides of the first frame 63 along the axial direction of the thinning back roller 641, and are used to fix the position of the first composite roller bracket 643 on the first frame 63;

[0170] Specifically, the first limit block 663 and the second limit block 664 have the same structure. Taking the first limit block 663 as an example, one end of the first limit block 663 is fixed to the first frame 63 by screws, and the other end is against the thinning composite roller bracket 651.

[0171] More specifically, the roller diameters of the thinning back roller 641 , the second thinning roller 642 , the thinning composite roller 652 and the second composite roller 654 are in the following relationship: second thinning roller 642 < thinning back roller 641 < thinning composite roller 652 = second composite roller 654 .

[0172] During the electrode film compounding process, the second thinning roller 642, the thinning composite roller 652 and the second composite roller 654 are all provided with heating oil circuits. When the second thinning roller 642 and the thinning composite roller 652 are rolling the thin film, the temperature of the second thinning roller 642 and the thinning composite roller 652 will change, so that the thermal expansion value of the second thinning roller 642 and the thinning composite roller 652 in the axial direction is different, resulting in a change in the gap between the second thinning roller 642 and the thinning composite roller 652, resulting in uneven thickness and poor precision of the thinned film. If the above relationship is satisfied between the rollers, this problem can be solved.

[0173] Specifically, the roller diameter of the second thinning roller 642 is smaller than the roller diameter of the thinning composite roller 652. During the thinning process, different linear speeds are generated on both sides of the membrane. The speed at which the membrane moves on the second thinning roller 642 is greater than the speed at which the membrane moves on the thinning composite roller 652. This helps to change the speed of the thinning film and can further apply shear force to the membrane to promote its fibrillation.

[0174] When producing wide electrodes by the above device, the second thinning roller 642 is easily deformed, resulting in uneven thickness of the film after secondary thinning and rolling; at the same time, when the second thinning roller 642 and the thinning composite roller 652 are rolling, the temperature of the second thinning roller 642 will change, making the second thinning roller 642 easy to expand and deform, resulting in uneven thickness of the thinned film. Therefore, a thinning back roller 641 that fits the second thinning roller 642 is provided to avoid deformation of the second thinning roller 642 and reduce the occurrence of uneven film thickness; specifically, the roller shaft length of the thinning back roller 641 is greater than or equal to the roller shaft length of the second thinning roller 642, and the roller diameter of the thinning back roller 641 is greater than the roller diameter of the second thinning roller 642;

[0175] Among them, the roller diameter of the thinning composite roller 652 is equal to the roller diameter of the second composite roller 654, which can ensure that the thinning composite roller 652 and the second composite roller 654 rotate at the same speed, so that during the composite process, the film sheet and the current collector are subjected to uniform and consistent pressure, thereby improving the composite accuracy.

[0176] In addition, the thinning composite roller 652 has both thinning and composite functions. When the thinning roller group 64 thins the film, the film adheres to the roller wall of the thinning composite roller 652 and enters the composite roller group 65, which can minimize the tension change of the film from thinning to composite.

[0177] Reference Fig. 20 In order to reduce the adhesion of electrode film materials on each roller, affect the heating of the film by the rollers and affect the flatness of the surface of each roller, the first frame 63 is provided with a first roller scraper 666, a second roller scraper 667, a third roller scraper 668 and a fourth roller scraper 669. The first roller scraper 666 is arranged on one side of the thinning composite roller 652 to scrape off the electrode film material on the thinning composite roller 652; the second roller scraper 667 is arranged on one side of the second composite roller 654 to scrape off the electrode film material on the second composite roller 654; the third roller scraper 668 is arranged on one side of the thinning back roller 641 to scrape off the electrode film material on the surface of the thinning back roller 641; the fourth roller scraper 669 is arranged on one side of the second thinning roller 642 to scrape off the electrode film material on the surface of the second thinning roller 642.

[0178] Specifically, a rough cutting knife group 671 and a fine cutting knife group 672 are further provided on the first frame 63. The rough cutting knife group 671 is provided at one end of the thinning roller group 64 away from the compound roller group 65. The rough cutting knife group 671 is used to cut the film fed into the secondary thinning compound mechanism 300; to prevent the film from being enlarged in width after being rolled and thinned, causing the wide side of the film to exceed the roller surface of the thinning roller group 64, and because the film lacks attachment support, the irregular edge of the film may cause curling and wavy edges in the process of entering the thinning roller group 64, thereby increasing the risk of the film breaking and cracking. After the rough cutting knife group 671 cuts the film, a regular edge is formed to avoid the film from cracking;

[0179] The fine cutter group 672 is arranged at the bottom of the thinning composite roller 652 to cut the membrane thinned by the thinning roller group 64 to avoid uneven edges of the formed electrode membrane and large differences in electric field strength on the electrode membrane, which may cause short circuits in the electrode membrane, thereby ensuring production quality.

[0180] Reference Fig.23 More specifically, the fine cutter assembly 672 includes a hand wheel 681, a screw rod 682, an upper slide rail 683, a lower slide rail 684, a left screw rod nut 685, a right screw rod nut 686, a left sliding seat 687, a right sliding seat 688, a left circular knife 689, a right circular knife 690, a left material receiving inclined plate 691, a right material receiving inclined plate 692, a left knife driving member 693 and a right knife driving member 694;

[0181] The upper slide rail 683 is located above the screw rod 682 and is arranged parallel to the screw rod 682;

[0182] The lower lower rail 684 is located below the screw rod 682 and is arranged parallel to the screw rod 682;

[0183] The hand wheel 681 is fixedly connected to the screw rod 682;

[0184] The screw rod 682 has left-hand threads and right-hand threads on both sides.

[0185] The left screw nut 685 is in transmission connection with the left thread, and the right screw nut 686 is in transmission connection with the right thread;

[0186] The left sliding seat 687 is fixed on the left screw nut 685 and is slidably disposed on the upper slide rail 683 and the lower slide rail 684;

[0187] The right sliding seat 688 is fixed on the right screw nut 686 and is slidably disposed on the upper slide rail 683 and the lower slide rail 684;

[0188] One end of the left material receiving inclined plate 691 is fixed on the left sliding seat 687, and is arranged on the side of the left circular knife 689 facing away from the right circular knife 690 and above the center of the left circular knife 689. The left material receiving inclined plate 691 is arranged with its inclination direction toward the bottom of the secondary thinning composite mechanism 300.

[0189] One end of the right material receiving inclined plate 692 is fixed on the right sliding seat 688, and is arranged on the side surface of the right circular knife 690 facing away from the left circular knife 689 and above the center of the right circular knife 690. The left material receiving inclined plate 691 is arranged with its inclination direction toward the bottom of the secondary thinning composite mechanism 300.

[0190] The fixed end of the left knife driving member 693 is disposed on the left sliding seat 687, and the driving end of the left knife driving member 693 is connected to the rotation center of the left circular knife 689;

[0191] The fixed end of the right knife driving member 694 is disposed on the right sliding seat 688 , and the driving end of the right knife driving member 694 is connected to the rotation center of the right circular knife 690 .

[0192] Taking cutting of a single-sided electrode membrane as an example, the working principle of the fine cutter set 672 is as follows:

[0193] Turn the hand wheel 681 to drive the screw 682 to rotate in the same direction, and the left screw nut 685 and the right screw nut 686 slide in opposite directions synchronously, so that the relative distance between the left circular knife 689 and the right circular knife 690 becomes farther; when the left circular knife 689 and the right circular knife 690 are adjusted to the appropriate position, the left knife driving member 693 and the right knife driving member 694 are started, and the left circular knife 689 and the right circular knife 690 cut the single-sided electrode diaphragm, and the cut left diaphragm waste edges and right diaphragm waste edges slide along the left material connecting inclined plate 691 and the right material connecting inclined plate 692 to the bottom of the secondary thinning composite mechanism 300 respectively under the action of gravity, completing the fine cutting of the single-sided electrode diaphragm.

[0194] In order to check the uniformity of cutting by the fine cutting knife group 672, a visual inspection mechanism 695 is fixed on the left sliding seat 687 and / or the right sliding seat 688. The visual inspection mechanism 695 moves with the left sliding seat 687 and / or the right sliding seat 688. The visual inspection mechanism 695 is used to detect whether the film is offset before entering the composite roller group 65 and whether the cutting edge is neat.

[0195] Reference Fig. 20 More specifically, a guide plate 680 is provided at the bottom of the thinning composite roller 652. Since the film is formed by rolling and pressing the dry material, when the thinning roller group 64 thins the film, some dust of the dry material falls off, and the guide plate 680 is used to guide the dust to fall to the bottom of the secondary thinning composite mechanism 300.

[0196] Reference Fig. 20 , Fig.21 , Fig.23 More specifically, a chamber 670 is provided in the housing 637, and the chamber 670 is provided at the bottom of the thinning roller group 64 and the composite roller group, and the left material receiving inclined plate 691, the right material receiving inclined plate 692, and the guide plate 680 are all inclined toward the chamber 670;

[0197] In order to prevent dust from being adsorbed onto the current collector, single-sided electrode membrane or double-sided electrode membrane, the housing 637 is also provided with a dust removal mechanism (not shown in the figure), the dust suction port of the dust removal mechanism is connected to the chamber 670, and the dust removal mechanism is used to remove dust in the chamber 670.

[0198] More specifically, the first roller scraper 666 and the second roller scraper 667 will also scrape off dust during the operation. In order to enable the dust removal mechanism to accurately absorb dust, a first dust removal pipe 655 and a second dust removal pipe 656 are provided. One end of the first dust removal pipe 655 is connected to the chamber 670 or the dust removal mechanism, and the other end is provided at one side of the first roller scraper 666. The dust scraped off by the first roller scraper 666 is sucked away by the dust removal mechanism via the first dust removal pipe 655; one end of the second dust removal pipe 656 is connected to the chamber 670 or the dust removal mechanism, and the other end is provided at one side of the second roller scraper 667. The dust scraped off by the second roller scraper 667 is sucked away by the dust removal mechanism via the first dust removal pipe 655.

[0199] More specifically, a film outlet conveyor path is provided on the top of the casing 637, and the single-sided electrode membrane or the double-sided electrode membrane flowing out through the composite roller group 65 flows out of the secondary thinning composite mechanism 300 along the film outlet conveyor path. The second roller scraper 667 is provided at the bottom of the film outlet conveyor path, and one end of the second dust removal pipe 656 is provided between the second roller scraper 667 and the film outlet conveyor path to more accurately absorb dust.

[0200] Reference Fig. 20 , Fig. 22 More specifically, the housing 637 is further provided with a tension roller set 711, which is used to adjust the tension of the film entering the secondary thinning composite mechanism 300 to avoid insufficient tension of the film, which causes wrinkles to form on the film during the thinning process; the tension roller set 711 includes a swing motor (not shown in the figure), a left swing roller 712, a right swing roller 713, a first material-slipping roller 714, and a second material-slipping roller 715;

[0201] The fixed end of the swing motor is arranged on the first frame 63;

[0202] The left swing roller 712 is fixedly connected to the output end of the swing motor and is disposed on one side of the output end of the swing motor close to the rough cutting knife group 671;

[0203] The right swing roller 713 is fixedly connected to the output end of the swing motor and is arranged on one side of the output end of the swing motor close to the thinning roller group 64;

[0204] The horizontal positions of the swing motor, the left swing roller 712 and the right swing roller 713 are all lower than the horizontal position of the fine cutter group 672;

[0205] The swing motor can drive the left swing roller 712 and the right swing roller 713 to swing with the swing motor as the rotation center;

[0206] The first material-pulling roller 714 is located above the left swing roller 712 and is disposed between the left swing roller 712 and the output end of the swing motor;

[0207] The second material-pulling roller 715 is located above the right swing roller 713 and is disposed between the right swing roller 713 and the output end of the swing motor;

[0208] The diaphragm rolls in contact with the first sliding roller 714, the left swing roller 712, the right swing roller 713 and the second sliding roller 715 in sequence; wherein the diaphragm runs alternately between the first sliding roller 714 and the left swing roller 712, the diaphragm runs on the same side of the left swing roller 712 and the right swing roller 713, and the diaphragm runs alternately between the right swing roller 713 and the second sliding roller 715.

[0209] More specifically, a tension sensor 716 is provided above the tension roller group 711, and the tension sensor 141 is used to detect the tension of the membrane tensioned by the tension roller group 711; the operator can adjust the tension of the membrane by the tension roller group 711 according to the value fed back by the tension sensor 141, and can also achieve this function by setting a program.

[0210] Reference Fig. 20 More specifically, a correction group 717 is provided at the bottom of the second thinning roller 642, and the correction group 717 is used to correct the current collector or single-sided electrode membrane that is about to enter the composite roller group 65 to ensure that the current collector or single-sided electrode membrane is aligned with the membrane.

[0211] Reference Fig.18 , Figure 24-26 In one embodiment, the winding mechanism 400 and the film supply mechanism 500 include a first winding roller 911, a second winding roller 912, a second frame 913, a thickness detection group 914, a second tension group 915 and a belt pressing group 916;

[0212] The first retracting roller 911 is used to collect the single-sided electrode membrane or the double-sided electrode membrane;

[0213] The second take-up and unwinding roller 912 is used to release the single-sided electrode membrane or the current collector into the secondary thinning composite mechanism 300;

[0214] The second frame 913 is provided with a tape collection path 917 and a tape unloading path 918 located below the tape collection path 917;

[0215] The thickness detection group 914 is disposed on the belt collection path 917 to detect the thickness of the single-sided electrode membrane and the double-sided electrode membrane;

[0216] The second tension group 915 and the belt pressing group 916 are arranged on the belt unwinding path 918. The horizontal position of the belt pressing group 916 is lower than the horizontal positions of the first take-up roller 911 and the second take-up roller 912. The belt pressing group 916 is used to press down the current collector and the single-sided electrode membrane released by the first take-up roller 911 to maintain the stability of the current collector and the single-sided electrode membrane during the belt walking process; the second tension group 915 is used to adjust the current collector and the single-sided electrode membrane pressed down by the belt pressing group 916.

[0217] Specifically, an alignment detection device 919 is also provided on the belt collection path 917. The alignment detection device 919 is used to detect whether the diaphragm is aligned with the current collector. If it is not correctly aligned, it may cause the motor resistance to be large and a short circuit to occur. The alignment detection device 919 replaces manual monitoring, further reducing labor costs and improving the intelligence of the equipment.

[0218] In one embodiment, the winding mechanism 400 and the film supply mechanism 500 are arranged on the same winding and unwinding device, and the winding and unwinding device includes a left turntable 951, a left turntable shaft 921, a right turntable shaft 931, a left first passive wheel 922, a left second passive wheel 923, a right turntable 952, a right first passive wheel 932, a right second passive wheel 933, a first winding and unwinding roller driving member 925, a second winding and unwinding roller driving member 935, a first winding and unwinding roller gear 926, a second winding and unwinding roller gear 936, a left first transmission chain (not shown in the figure), a left second transmission chain (not shown in the figure), a left driving wheel 924, a right driving wheel 934, a right first transmission chain (not shown in the figure) and a right second transmission chain (not shown in the figure);

[0219] The left turntable shaft 921 is disposed at the center of the left turntable 951 and is located on the side facing away from the right turntable 952;

[0220] The right turntable shaft 931 is disposed at the center of the right turntable 952 and is located on the side facing away from the left turntable 951;

[0221] The left first passive wheel 922 and the left second passive wheel 923 are rotatably mounted on the left turntable shaft 921, and the relative positions of the left first passive wheel 922 and the left second passive wheel 923 are fixed;

[0222] The right first passive wheel 932 and the right second passive wheel 933 are rotatably mounted on the right turntable shaft 931, and the relative positions of the right first passive wheel 932 and the right second passive wheel 933 are fixed;

[0223] The first retractable roller gear 926 is connected to one end of the first retractable roller 911, and the first retractable roller gear 926, the left first driven wheel 922, and the left second driven wheel 923 are all located on the same surface of the left turntable 951;

[0224] The left first transmission chain is meshed with the first retractable roller gear 926 and the left first driven wheel 922;

[0225] The first retractable roller driving member 925 is disposed on the left bracket 953, and a left driving wheel 924 is disposed on the first retractable roller driving member 925, and the left second transmission chain is meshed with the left driving wheel 924 and the left second driven wheel 923;

[0226] The second retractable roller gear 936 is connected to one end of the second retractable roller 912, and the second retractable roller gear 936, the right first driven wheel 932, and the right second driven wheel 933 are all located on the same surface of the right turntable 952;

[0227] The right first transmission chain is meshed with the second retractable roller gear 936 and the right first driven wheel 932;

[0228] The second retractable roller driving member 935 is disposed on the right bracket 954 , and a right driving wheel 934 is disposed on the second retractable roller driving member 935 . The right second transmission chain is meshed with the right driving wheel 934 and the right second driven wheel 933 .

[0229] The working principle of this embodiment is as follows:

[0230] The first retractable roller 911 is located at the retracting position, and the second retractable roller 912 is located at the unretracting position;

[0231] The first retractable roller driving member 925 drives the left active wheel 924 to rotate, and through the transmission of the left second transmission chain, drives the left second passive wheel 923 to rotate, and the left second passive wheel 923 drives the left first passive wheel 922 to rotate synchronously. Under the drive of the left first transmission chain, the first retractable roller gear 926 rotates, driving the first retractable roller 911 to rotate about its axis, thereby realizing unwinding;

[0232] The second retractable roller driving member 935 drives the right active wheel 934 to rotate, and through the transmission of the right second transmission chain, drives the right second passive wheel 933 to rotate, and the right second passive wheel 933 drives the right first passive wheel 932 to rotate synchronously. Under the drive of the right first transmission chain, the second retractable roller gear 936 rotates, driving the second retractable roller 912 to rotate about its axis, thereby realizing unwinding;

[0233] In this embodiment, a control circuit board and a winding thickness sensor can also be set on the right turntable 952 or the left turntable 951, and the setting of the electronic device needs to plan the line reasonably to avoid the wires being arranged in a disorderly manner on the device and affecting the normal operation of the winding and unwinding structure; taking the driving of the first winding and unwinding roller 911 as an example, if the left driving wheel 924 is used to directly drive the first winding and unwinding roller gear 926, the left driving wheel 924 and the first winding and unwinding roller gear 926 need to be located on the same plane, and as the left turntable 951 rotates, The wires on the surface of the left turntable 951 can easily get entangled with the left driving wheel 924, which will not only affect the rotation of the left turntable 951, but also cause the left driving wheel 924 to be unable to engage with the first retracting roller gear 926. In the present embodiment, since the left first passive wheel 922 and the left second passive wheel 923 are both located on the left turntable shaft 921, the left driving wheel 924 and the first retracting roller gear 926 are located on two planes, thereby preventing the wires on the inner surface of the left turntable 951 from getting entangled with the left driving wheel 924.

[0234] Specifically, a left turntable driving member 938 is provided on the left bracket 953 , and an output end of the left turntable driving member 938 is engaged with the left turntable 951 for driving the left turntable 951 to rotate.

[0235] More specifically, a plurality of teeth are provided on the circumference of the left turntable 951 , and the output end of the left turntable driving member 938 is connected to a driving gear 937 meshing with the teeth. The left turntable driving member 938 drives the driving gear 937 to rotate, thereby driving the left turntable 951 to rotate.

[0236] The left turntable driving member 938 drives the left turntable 951 and the right turntable 952 to rotate coaxially, and does not interfere with the transmission drive structure of the first retractable roller 911 and the transmission drive structure of the second retractable roller 912, which is convenient for maintenance and installation.

[0237] Reference Fig.11 , Figure 24-26 as well as Fig.33 In one embodiment, it also includes a shell 941, which encloses the left turntable shaft 921, the right turntable shaft 931, the left first passive wheel 922, the left second passive wheel 923, the right first passive wheel 932, the right second passive wheel 933, the first retracting roller driving member 925, the second retracting roller driving member 935, the first retracting roller gear 926, the second retracting roller gear 936, the left first transmission chain, the left second transmission chain, the left driving wheel 924, the right driving wheel 934, the right first transmission chain and the right second transmission chain to prevent the operator from accidentally touching it; and in order to facilitate rewinding, the first retracting roller 911 and the second retracting roller 912 are exposed outside the shell 941.

[0238] In the housing 941, along the winding and transmission direction of the single-sided electrode membrane or the double-sided electrode membrane, a third tension group 942, a second deflection correction group 943, and a second pressing belt group 944 are sequentially arranged; the third tension group 942 is used to tension the single-sided electrode membrane or the double-sided electrode membrane detected by the thickness detection group 914; the second deflection correction group 943 is used to correct the single-sided electrode membrane or the double-sided electrode membrane to ensure that the single-sided electrode membrane or the double-sided electrode membrane remains flat during winding; the second pressing belt The group 944 includes a bottom plate 945 and two pressing pieces 946 disposed on the top of the bottom plate 945. There is a gap between the pressing piece 946 and the bottom plate 945. The single-sided electrode membrane or the double-sided electrode membrane runs in the gap. A second operation window is disposed on the housing 941 and located at the position of the second pressing group 944. Through the second operation window (not shown in the figure), the operator can observe the running of the single-sided electrode membrane or the double-sided electrode membrane between the two pressing pieces 946.

[0239] More specifically, the side of the second pressing belt set 944 facing the bottom plate 945 is an arc surface to prevent scratching of the single-sided electrode membrane or the double-sided electrode membrane;

[0240] More specifically, the second working window is arranged to be tilted upward for easy observation.

[0241] More specifically, the housing 941 also includes a roll diameter detection structure 948, which is used to detect the roll diameter of the material roll collected on the first retractable roller 911 and the second retractable roller 912, to ensure that the roll diameter of the collected single-sided electrode membrane or double-sided electrode membrane meets the quality requirements, and the film amount of the current collector or single-sided electrode membrane during the unwinding process can be estimated through the numerical value fed back by the roll diameter detection structure 948, so as to facilitate the operator to replenish in time;

[0242] More specifically, the roll diameter detection structure 948 is an ultrasonic roll diameter detector.

[0243] The working principle and the tape-feeding process of the secondary thinning composite mechanism 300 in this embodiment are as follows:

[0244] Diaphragm conveying process: the diaphragm enters from the left side of the first frame 63, is first cut by the rough cutting knife group 671, enters the tension roller group 711 to adjust the tension, and then moves to the top of the first frame 63, and then enters the thinning roller group 64 downward. The dust generated during the thinning process falls into the guide sheet 680. At the same time, the diaphragm is thinned, and the thin film is attached to the thinning composite roller 652 and rotates. At the same time, the fine cutting knife group 672 cuts the diaphragm on the thinning composite roller 652. The cut diaphragm continues to be attached to the thinning composite roller 652 and rotates, and is transferred to the composite roller group 65 to be composited with the current collector or the single-sided electrode diaphragm.

[0245] The current collector or single-sided electrode membrane tape running process: Taking the current collector as an example, the current collector enters from the lower right side below the first frame 63. A correction group 717 is provided below the first frame 63. After correction, the current collector is aligned with the membrane, and the current collector is tape-running upward and enters the composite roller group 65 to be composited with the membrane to form a single-sided electrode membrane or a double-sided electrode membrane;

[0246] The conveying process of the single-sided electrode membrane or the double-sided electrode membrane: Taking the single-sided electrode membrane as an example, after the single-sided electrode membrane flows out from the composite roller group 65, it conveys toward the tension sensor 716 arranged above the second composite roller 654. After the tension is detected, it flows out of the secondary thinning composite mechanism 300 from the upper right corner of the first frame 63, and enters the winding mechanism 400 and the film supply mechanism 500.

[0247] The working principles and the tape-feeding process of the winding mechanism 400 and the film-feeding mechanism 500 in this embodiment are as follows:

[0248] Single-sided compounding: when the first retractable roller 911 is located at the unwinding position and the second retractable roller 912 is located at the rewinding position, the first retractable roller 911 provides the current collector sheet to the composite roller group 65, and enters the composite roller group 65 together with the thinned membrane sheet, and after compaction, forms a single-sided electrode membrane sheet, which enters the second retractable roller 912 in a material-free state, and the second retractable roller 912 rewinds the single-sided electrode membrane sheet;

[0249] Double-sided compounding: Subsequently, the left turntable 951 and the right turntable 952 rotate synchronously until the second reel 912 is located at the unwinding position and the first reel 911 is located at the rewinding position; subsequently, the second reel 912 provides the single-sided electrode membrane to the composite roller group 65, and enters into the composite roller group 65 together with the thinned membrane, and after compaction, a double-sided electrode membrane is formed, and enters into the first reel 911 in a material-free state, and the first reel 911 completes the rewinding of the double-sided electrode membrane.

[0250] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dry electrode rolling mechanism, characterized in that: It comprises a frame frame (1) with left and right ends being open, an upper rolling module (2), a lower rolling module (3), an upper steel belt (4), a lower steel belt (5) and a rolling channel (6); The upper pressing module (2) is arranged above the lower pressing module (3); The rack frame (1) comprises an upper surface (11), a lower surface (12), an upper connecting column (13), a lower connecting column (14), a seat body (15), an upper quick-release block (16), a lower quick-release block (17), a front lifting ear (18) and a rear lifting ear (19); The upper rolling module (2) and the lower rolling module (3) are installed in the frame (1), and the upper steel belt (4) is arranged to roll and fit the upper rolling module (2); The upper steel belt (4) is sleeved outside the upper rolling module (2) and rotates around the upper surface (11); The lower steel belt (5) is sleeved outside the lower rolling module (3) and rotates around the lower surface (12); There are at least two front lifting ears (18) disposed on the front side of the upper surface (11) and located on one side of the upper steel belt (4); there are at least two rear lifting ears (19) disposed on the rear side of the upper surface (11) and located on the other side of the upper steel belt (4); The rolling channel (6) is located in the frame (1) and is arranged between the upper steel belt (4) and the lower steel belt (5); The upper quick-release blocks (16) include at least two, and the upper quick-release blocks (16) are arranged between the upper connecting column (13) and the lower connecting column; and the upper quick-release blocks (16) are located on the same side of the upper steel belt (4) and the lower steel belt (5); The lower quick-release blocks (17) include at least two, and the lower quick-release blocks (17) are arranged between the lower surface (12) and the seat body (15); and the lower quick-release blocks (17) are located on the same side of the upper steel belt (4) and the lower steel belt (5); The upper quick-release block (16) comprises a first rectangular upper plane (161), a first rectangular lower plane (162), and a first connecting platform (163) provided between the first rectangular upper plane (161) and the first rectangular lower plane (162); The cross-sectional area of ​​the first connecting platform (163) is smaller than the cross-sectional areas of the first rectangular upper plane (161) and the first rectangular lower plane (162); The first rectangular upper plane (161) is detachably connected to the upper connecting column (13), and the first rectangular lower plane (162) is detachably connected to the lower connecting column (14); A first upper fixing member (164) detachably provided on one side of the first rectangular upper plane (161) facing the first rectangular lower plane (162) and detachably connected to the upper connecting column (13), the first upper fixing member (164) being arranged on each corner of the first rectangular upper plane (161); A first lower fixing member (165) detachably provided on one side of the first rectangular lower plane (162) facing the first rectangular upper plane (161) and detachably connected to the lower connecting column (14), the first lower fixing member (165) being arranged on each corner of the first rectangular lower plane (162); The lower quick-release block (17) comprises a second rectangular upper plane (171), a second rectangular lower plane (172), and a second connecting platform (173) provided between the second rectangular upper plane (171) and the second rectangular lower plane (172); The cross-sectional area of ​​the second connecting platform (173) is smaller than the cross-sectional areas of the second rectangular upper plane (171) and the second rectangular lower plane (172); The second rectangular upper plane (171) is detachably connected to the lower connecting column (14), and the second rectangular lower plane (172) is detachably connected to the seat body (15); A second upper fixing member (174) detachably connected to the lower connecting column (14) is detachably provided on one side of the second rectangular upper plane (171) facing the second rectangular lower plane (172), and the second upper fixing member (174) is arranged on each corner of the second rectangular upper plane (171); A second lower fixing member (175) detachably connected to the seat body (15) is detachably provided on one side of the second rectangular lower plane (172) facing the second rectangular upper plane (171); the second lower fixing member (175) is arranged on each corner of the second rectangular lower plane (172).

2. The dry electrode rolling mechanism according to claim 1, characterized in that: The upper surface (11) further comprises a front crossbeam (111), a rear crossbeam (112), a left connecting column (113) and a right connecting column (114); The front cross beam (111) is parallel to the rear cross beam (112), and the left connecting column (113) and the right connecting column (114) are parallel to each other; the front cross beam (111), the rear cross beam (112), the left connecting column (113), and the right connecting column (114) are all located on the same horizontal plane; The left connecting column (113) and the right connecting column (114) are both mounted with the front lifting ears (18) and the rear lifting ears (19); The front cross beam (111) is detachably arranged between the left connecting column (113) and the right connecting column (114).

3. The dry electrode rolling mechanism according to claim 1, characterized in that: One end of the rolling channel (6) is a feed port (61), and the other end of the rolling channel (6) is a discharge port (62); Along the direction from the feed port (61) to the discharge port (62), the distance between the upper steel belt (4) and the lower steel belt (5) on the rolling channel (6) gradually decreases.

4. The dry electrode rolling mechanism according to claim 3, characterized in that: The upper calendering module (2) comprises a first upper roller group (21), a second upper roller group (22) and a third upper roller group (23) arranged side by side; The lower rolling module (3) comprises a first lower roller group (31) arranged below the first upper roller group (21), a second lower roller group (32) arranged below the second upper roller group (22), and a third lower roller group (33) arranged below the third upper roller group (23); Along the direction from the feed port (61) to the discharge port (62), the widths of the first upper roller group (21), the second upper roller group (22), and the third upper roller group (23) increase in sequence; and the widths of the first lower roller group (31), the second lower roller group (32), and the third lower roller group (33) increase in sequence.

5. The dry electrode rolling mechanism according to claim 4, characterized in that: It also includes a first upper heater (71), a second upper heater (72), a third upper heater (73), a fourth upper heater (74), a first lower heater (75), a second lower heater (76), a third lower heater (77) and a fourth lower heater (78); The first upper heater (71) is fixedly arranged on the left side of the first upper roller group (21); the first lower heater (75) is fixedly arranged on the left side of the first lower roller group (31); One end of the second upper heater (72) is fixed to the right side of the first upper roller group (21), and the other end is fixed to the left side of the second upper roller group (22); one end of the second lower heater (76) is fixed to the right side of the first lower roller group (31), and the other end is fixed to the left side of the second lower roller group (32); One end of the third upper heater (73) is fixed to the right side of the second upper roller group (22), and the other end is fixed to the left side of the third upper roller group (23); one end of the third lower heater (77) is fixed to the right side of the second lower roller group (32), and the other end is fixed to the left side of the third lower roller group (33); The fourth upper heater (74) is fixed to the right side of the third upper roller group (23); and the fourth lower heater (78) is fixed to the right side of the third lower roller group (33).

6. The dry electrode rolling mechanism according to claim 1, characterized in that: An upper panel (101) is provided on the outside of the frame frame (1) and located on one side of the upper pressing module (2); The upper panel (101) is provided with a front upper deflection correction driving member (811), a rear upper deflection correction driving member (812), an upper mounting plate (813) obliquely mounted on the upper panel (101), a front upper slide rail (814) and a rear upper slide rail (815) vertically mounted on the upper mounting plate (813); a front upper slider is slidably disposed inside the front upper slide rail (814), and a rear upper slider is slidably disposed inside the rear upper slide rail (815); an upper deflection correction roller (818) is rotatably connected between the front upper slider and the rear upper slider, and the upper deflection correction roller (818) is in rolling contact with the upper steel belt (4); The extension directions of the front upper deflection-correcting driving member (811) and the rear upper deflection-correcting driving member (812) are arranged toward the upper surface (11); The output end of the front upper deflection correction driving member (811) passes through the upper mounting plate (813) and is fixedly connected to the front upper sliding block, and the front upper deflection correction driving member (811) is used to drive the front upper sliding block to slide on the front upper sliding rail (814); The output end of the rear upper deflection-correcting driving member (812) passes through the upper mounting plate (813) and is fixedly connected to the rear upper sliding block, and the rear upper deflection-correcting driving member (812) is used to drive the rear upper sliding block to slide on the rear upper sliding rail (815); An upper ultrasonic side edge group (83) is mounted on the upper surface (11), and the upper ultrasonic side edge group (83) is communicatively connected to the front upper deflection correction driving component (811) and the rear upper deflection correction driving component (812); The upper ultrasonic side edge group (83) comprises an upper U-shaped frame (831) and a first position adjustment group (832) for adjusting the upper U-shaped frame (831); both opposite ends of the upper U-shaped frame (831) are provided with a long strip of upper ultrasonic detectors (833); The edge of the upper steel strip (4) is located between the two upper ultrasonic detectors (833).

7. The dry electrode rolling mechanism according to claim 1, characterized in that: A lower panel (102) is provided on the outside of the frame frame (1) and located on one side of the lower pressing module (3); A front lower deflection correction drive component, a rear lower deflection correction drive component, a lower mounting plate obliquely mounted under the lower panel (102), and a front lower sliding rail and a rear lower sliding rail vertically mounted under the lower mounting plate are mounted under the lower panel (102); a front lower slider is slidably mounted in the front lower sliding rail, and a rear lower slider is slidably mounted in the rear lower sliding rail; a lower deflection correction roller is rotatably connected between the front lower slider and the rear lower sliding rail, and the lower deflection correction roller is in rolling contact with the lower steel belt (5); The extension directions of the front lower deflection-correcting driving member and the rear lower deflection-correcting driving member are arranged toward the lower surface (12); The output end of the front lower deflection correction driving member passes through the lower mounting plate and is fixedly connected to the front lower slider, and the front lower deflection correction driving member is used to drive the front lower slider to slide on the front lower slide rail; The output end of the rear lower deviation-correcting driving member passes through the lower mounting plate and is fixedly connected to the rear lower slider, and the rear lower deviation-correcting driving member is used to drive the rear lower slider to slide on the rear lower slide rail; A lower ultrasonic side edge group (84) is mounted on the lower surface (12), and the lower ultrasonic side edge group (84) is communicatively connected with the front lower deviation correction drive component and the rear lower deviation correction drive component; The lower ultrasonic side edge group (84) comprises a lower U-shaped frame (841) and a second position adjustment group (844) for adjusting the lower U-shaped frame (841); both opposite ends of the lower U-shaped frame (841) are provided with a long strip of lower ultrasonic detectors (842); The lower surface (12) is provided with a lower opening (843) located above the lower ultrasonic detector (842); The edge of the lower steel strip (5) is located between the two lower ultrasonic detectors (842).

8. A method for disassembling the upper steel strip of a dry electrode rolling mechanism, characterized in that: The dry electrode rolling mechanism according to any one of claims 1 to 7 is included, and the upper steel strip disassembly method comprises: S1.

1. Release the fixation between the upper quick-release block (16) and the upper connecting column (13) and the lower connecting column (14); S1.2, lifting the front lifting ears (18) and the rear lifting ears (19), and applying an upward force to the rack frame (1); S1.3, remove the upper quick-release block (16); S1.

4. Release the front lifting lug (18) and only lift the rear lifting lug (19); S1.

5. Take out the upper steel belt (4) from the front of the frame (1); S1.

6. Install the quick-release block (16).

9. A method for disassembling the lower steel strip of a dry electrode rolling mechanism, characterized in that: The dry electrode rolling mechanism according to any one of claims 1 to 7 is included, and the lower steel strip disassembly method includes: S2.

1. Release the fixation between the upper quick-release block (16) and the upper connecting column (13) and the lower connecting column (14), and release the support between the lower quick-release block (17) and the lower surface (12) and the seat body (15); S2.2, lifting the front lifting ears (18) and the rear lifting ears (19), applying an upward force to the rack frame (1), and lifting the lower surface (12); S2.3, remove the lower quick-release block (17) and the upper quick-release block (16); S2.

4. Take out the lower steel belt (5) from the front of the frame (1); S2.

5. Install the upper quick-release block (16) and the lower quick-release block (17).

10. A dry electrode production line, characterized in that: Along the material transmission direction, there are provided in sequence a material extrusion device (100), a dry electrode rolling mechanism (200) as claimed in any one of claims 1 to 7, a secondary thinning and compounding mechanism (300), a winding mechanism (400) and a film supply mechanism (500); The extrusion device (100) is used to mix and shear powders to form an electrode mixture; the dry electrode rolling mechanism (200) is used to roll the electrode mixture into a thick film sheet; the secondary thinning and compounding mechanism (300) is used to roll the thick film sheet into a thin film sheet, and compound the thin film sheet or the single-sided electrode film with the current collector film to form a composite film; the film supply mechanism (500) is used to provide the current collector film or the single-sided electrode film to the secondary thinning and compounding mechanism (300), and the winding mechanism (400) is used to wind up the composite film.

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