Electrode production equipment and electrode diaphragm manufactured by same

Abstract

The invention discloses electrode production equipment and an electrode diaphragm. The electrode production equipment comprises a feeding machine, a belt rolling and pressing mechanism, a roller rolling and pressing mechanism, a composite roller, a detection mechanism and an overturning winding and unwinding mechanism, the feeding machine is used for mixing and uniformly stirring the materials, so that the materials are fiberized; the upper discharging nozzle of the feeder is arranged at the feeding end of the rolling channel; the thinning roller and the thinning material conveying roller are matched with each other, so that the thick film sheet is rolled into a thin film sheet; the thinning conveying roller and the compounding roller are matched with each other to compound the thin film sheet and the to-be-compounded film to form a finished film; the detection mechanism is used for detecting the alignment degree of a thin film piece on the finished product film and the to-be-compounded film and detecting the thickness of the film piece; the unwinding group, the compounding roller and / or the thinning material conveying roller rotate to release a to-be-compounded film; and meanwhile, the finished film is dragged, one end of the finished film is fixed to the winding set, and the winding set works for winding. According to the electrode diaphragm manufactured by adopting the electrode production equipment, the loading capacity of a single face is 12mg / cm < 2 >-24mg / cm < 2 >, the tape conveying path is simplified, and automatic operation can be realized only by manually guiding the tape once.

Description

Technical Field

[0001] The present invention relates to the field of electrode technology, and in particular to an electrode production device and an electrode membrane manufactured therefrom. Background Art

[0002] The dry production process of electrode materials is a key link in battery manufacturing, and its efficiency and quality directly affect the overall performance of the battery. However, the existing dry process is complicated, which not only increases production costs, but also limits production efficiency and the possibility of large-scale production.

[0003] The traditional dry process includes multiple steps, such as mixing, stirring, mixing, granulation, feeding, film forming, calendaring, trimming and compounding. This series of continuous steps requires precise control and coordination to ensure the quality of the final product. If the operation process of the above steps can be simplified and the path of the electrode membrane can be reduced, it will be beneficial to improve the production efficiency of the electrode membrane. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides an electrode production device that can simplify the dry electrode production steps and an electrode membrane manufactured therefrom.

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

[0006] An electrode production device, comprising: a feeder, a belt calendering mechanism, a roller calendering mechanism, a composite roller, a detection mechanism and a flipping and rewinding mechanism;

[0007] The feeder is used to mix and stir the material to make it fiberized; wherein the feeder is provided with a discharge nozzle;

[0008] The belt pressing mechanism is used to press the material into a thick film sheet, and the belt pressing mechanism includes a pressing channel, and the discharge nozzle is arranged on the feed end of the pressing channel;

[0009] The roller calendering mechanism comprises a thinning roller and a thinning transfer roller adjacent to the thinning roller, the composite roller is rotatably provided on one side of the thinning transfer roller, the thinning roller and the thinning transfer roller cooperate with each other to calender a thick film sheet into a thin film sheet, the thin film sheet is transferred to between the thinning transfer roller and the composite roller in contact with the thinning transfer roller; the thinning transfer roller and the composite roller cooperate with each other to composite the thin film sheet and the film to be composited to form a finished film;

[0010] The detection mechanism is used to detect the alignment between the thin film sheet on the finished film and the film to be composited and to detect the thickness of the film sheet;

[0011] The flipping unwinding and rewinding mechanism is provided with a rewinding group and an unwinding group; the film to be composited on the unwinding group is pulled between the thinning transfer roller and the composite roller, and the unwinding group, the composite roller and / or the thinning transfer roller are rotated to release the film to be composited; at the same time, the finished film is pulled, one end of the finished film is fixed on the rewinding group, and the rewinding group operates to rewind.

[0012] An electrode membrane, the electrode membrane is prepared by the above-mentioned electrode production equipment, and the loading amount of a single side of the electrode membrane is 12 mg / cm 2 -24mg / cm 2 .

[0013] The beneficial effects of the present invention are:

[0014] When the equipment is in use, after feeding the material into the feeder manually, wait for the belt calendering mechanism to calender the material into a thick film sheet, and then pull the thick film sheet into the roller calendering mechanism. The roller calendering mechanism calenders the thick film sheet into a thin film sheet, and under the rotation of the thinning material transfer roller, the thin film sheet automatically enters between the thinning material transfer roller and the composite roller; the film to be composited on the unwinding group is pulled between the thinning material transfer roller and the composite roller, and after the film sheet and the film to be composited are composited to form a finished film, the finished film is pulled to the winding group to complete the winding operation; the equipment simplifies the belt path, and only needs to be manually led once to automatically operate, and the entire line can be completed by one person; it solves the problem of repeated manual leading;

[0015] In addition, after feeding the material into the feeder, the equipment does not need manual mixing and granulation process, and the loading capacity of the single side of the manufactured electrode membrane is 12mg / cm 2 -24mg / cm 2 , meets manufacturing standards, reduces process steps and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of the electrode production equipment;

[0018] Figure 2 It is a cross-sectional view of the roller calendering mechanism, the composite roller and the integrated frame;

[0019] Figure 3 It is a three-dimensional structural diagram of the detection mechanism and the flipping and rewinding mechanism;

[0020] Figure 4 It is the rear view with the extension mechanism;

[0021] Figure 5 It is a three-dimensional diagram with a rolling mechanism;

[0022] Figure 6 It is one of the cross-sectional views with the rolling mechanism;

[0023] Figure 7 This is the second cross-sectional view with a rolling mechanism;

[0024] Figure 8 is a structural schematic diagram of an upper ultrasonic position detection group / a lower ultrasonic position detection group;

[0025] Fig. 9 It is a schematic diagram of the structure of a cutting component;

[0026] Fig.10 It is one of the structural schematic diagrams of a partial flipping rewinding and unwinding mechanism;

[0027] Fig.11 This is the second structural diagram of a partial flipping rewinding and unwinding mechanism. DETAILED DESCRIPTION

[0028] 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.

[0029] Reference Figure 1 , Figure 4 , an electrode production equipment, comprising: a feeder 1, a belt calendering mechanism 2, a roller calendering mechanism 3, a composite roller 4, a detection mechanism 5 and a flipping and unwinding mechanism 6; the feeder 1 is used to mix and stir the material to make the material fiberized; wherein, the feeder 1 is provided with a discharge nozzle 11; the belt calendering mechanism 2 is used to calender the material into a thick film sheet, and transfer the material by surface pressure, so as to effectively improve the uniformity and tension of the thick film sheet and prevent the material from breaking; the belt calendering mechanism 2 includes a calendering channel 21, and the discharge nozzle 11 is arranged on the feeding end of the calendering channel 21; the material transfer steps and the probability of material contamination during the transfer process are reduced;

[0030] Reference Figure 2The roller calendering mechanism 3 includes a thinning roller 31 and a thinning transfer roller 32 adjacent to the thinning roller 31. The composite roller 4 is rotatably provided on one side of the thinning transfer roller 32. The thinning roller 31 cooperates with the thinning transfer roller 32 to calender the thick film sheet into a thin film sheet; the film sheet is transferred to between the thinning transfer roller 32 and the composite roller 4 by being attached to the thinning transfer roller 32, so as to avoid the film sheet being broken due to excessive tension; the thinning transfer roller 32 cooperates with the composite roller 4 to composite the film sheet with the film to be composited to form a finished film; the detection mechanism 5 is used to detect the alignment of the film sheet on the finished film with the film to be composited and to detect the thickness of the finished film, so as to ensure the consistency of the thickness of the finished film;

[0031] Reference Figure 2 , Figure 3 The flipping unwinding and rewinding mechanism 6 is provided with a rewinding group 601 and an unwinding group 602; the film to be composited on the unwinding group 602 is manually pulled to between the thinning transfer roller 32 and the composite roller 4, and the unwinding group 602, the composite roller 4 and / or the thinning transfer roller 32 rotate to release the film to be composited; at the same time, the finished film is manually pulled, and one end of the finished film is fixed on the rewinding group 601, and the rewinding group 601 operates to rewind.

[0032] When the device is in use, after feeding the material into the feeder 1 manually, wait for the belt calendering mechanism 2 to calender the material into a thick film sheet, and then pull the thick film sheet into the roller calendering mechanism 3. The roller calendering mechanism 3 calenders the thick film sheet into a thin film sheet, and under the rotation of the thinning feed roller 32, the thin film sheet automatically enters between the thinning feed roller 32 and the composite roller 4; the film to be composited on the unwinding group 602 is manually pulled between the thinning feed roller 32 and the composite roller 4, and after the film sheet and the film to be composited are composited to form a finished film, the finished film is pulled onto the winding group 601 to complete the winding operation; the device simplifies the belt path, and only needs to be manually led once to automatically operate, and the entire line can be completed by only one person; it solves the problem of repeated manual leading;

[0033] Reference Figures 4 to 6 In one embodiment, the strip rolling mechanism 2 comprises an upper steel strip 22 disposed above the rolling channel 21, a lower steel strip 23 disposed below the rolling channel 21, a pressure member 24, an upper rotating roller 25 and a lower rotating roller 26; the upper rotating roller 25 is in rolling contact with the upper steel strip 22; the lower rotating roller 26 is in rolling contact with the lower steel strip 23;

[0034] There are at least two pressure members 24, which are axially arranged along the upper rotating roller 25. The pressure members 24 are used to apply pressure to the axial ends of the upper rotating roller 25. The pressure is transmitted to the edges on both sides of the upper steel belt 22 through the axial ends of the upper rotating roller 25 to extend and press the material, and evenly apply pressure to the material to ensure the thickness consistency of the thick film.

[0035] The pressure P applied by the pressure member 24 to the upper rotating roller 25 satisfies the range of 0<P≤9900N. Within this range, the greater the pressure applied, the tighter the electrode material can be combined, taking into account the functionality and structural strength of the thick film; if the pressure exceeds this range, it will cause the material to be over-compacted, destroy the structural strength of the thick film, and the film will be easily deformed or cracked. Specifically, the adjustment accuracy of the pressure member 24 is 4905N, so that the pressure can be accurately adjusted according to different material ratios.

[0036] More specifically, the pressure member 24 is a hydraulic cylinder.

[0037] Specifically, the height of the rolling channel 21 decreases gradually from the feed end to the discharge end, which is conducive to gradually thinning the thick film, preventing the film from being brittle and hard, and achieving a better one-time film thickness limit.

[0038] The belt rolling mechanism 2 includes a belt rolling frame 201 with left and right ends being open; the belt rolling frame 201 includes a first beam 245, a second beam 244, a first connecting column 243 and a second connecting column 241, a lower surface 242, a first supporting column 269, a second supporting column 268, a third supporting column 267, a fourth supporting column 264, a fifth supporting column 265, a sixth supporting column 266, a fixing seat 27, a first connecting block 281, a second connecting block 282, a third connecting block 283, a fourth connecting block 284, a fifth connecting block 285, a sixth connecting block 286, a front lifting ear 287 and a rear lifting ear 288;

[0039] The first beam 245 is parallel to the second beam 244, and the first connecting column 243 is parallel to the second connecting column 241; the first beam 245 and the second beam 244 are vertically connected to the first connecting column 243 and the second connecting column 241 on the same horizontal plane; that is, the first beam 245, the second beam 244, the first connecting column 243 and the second connecting column 241 are all located on the same horizontal plane.

[0040] The front lifting ears 287 and the rear lifting ears 288 are installed on the first connecting column 243 and the second connecting column 241;

[0041] The upper rotating roller 25 and the lower rotating roller 26 are installed in the belt calendering frame 201;

[0042] The upper steel belt 22 is sleeved outside the upper rotating roller 25 and rotates around the first connecting column 243 and the second connecting column 241;

[0043] The front lifting ears 287 and the rear lifting ears 288 are arranged on both sides of the upper steel belt 22;

[0044] The lower steel belt 23 is sleeved outside the lower rotating roller 26 and rotates around the lower surface 242;

[0045] The first support column 269 connects the first beam 245 and the first connecting column 243; the second support column 268 connects the first beam 245 and the second connecting column 241; the first connecting block 281 is detachably connected to an end of the first support column 269 away from the first connecting column 243, and the second connecting block 282 is detachably connected to an end of the second support column 268 away from the first connecting column 243;

[0046] The other end of the first connection block 281 is detachably connected to the third support column 267, and one end of the third support column 267 is fixedly connected to the lower surface 242; the other end of the second connection block 282 is detachably connected to the fourth support column 264, and one end of the fourth support column 264 is fixedly connected to the lower surface 242;

[0047] Reference Figure 4 One end of the fifth support column 265 is fixedly connected to the second beam 244 and the first connecting column 243, and the other end is fixedly connected to the lower surface 242; one end of the sixth support column 266 is fixedly connected to the second beam 244 and the second connecting column 241, and the other end is fixedly connected to the lower surface 242;

[0048] Reference Figure 5 The third connecting block 283 is disposed directly below the third supporting column 267, one end of which is detachably connected to the lower surface 242, and the other end of which is detachably connected to the fixing seat 27; the fourth connecting block 284 is disposed directly below the fourth supporting column 264, one end of which is detachably connected to the lower surface 242, and the other end of which is detachably connected to the fixing seat 27;

[0049] The fifth connection block 285 is disposed directly below the fifth support column 265, with one end fixedly connected to the lower surface 242 and the other end fixedly connected to the fixing seat 27; the sixth connection block 286 is disposed directly below the sixth support column 266, with one end fixedly connected to the lower surface 242 and the other end fixedly connected to the fixing seat 27;

[0050] After the first support column 269, the third support column 267 and the first connecting block 281 are spliced, the total length is equal to the length of the fifth support column 265; after the second support column 268, the fourth support column 264 and the second connecting block 282 are spliced, the total length is equal to the length of the sixth support column 266.

[0051] In the existing installation of double steel belts, the steel belts are welded into a complete circle by a welding gun after entering the belt rolling machine frame 201 for one 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. When installing the upper steel belt 22 in this embodiment, the following steps can be taken:

[0052] S1.1, release the fixing between the first connecting block 281 and the first supporting column 269 and the third supporting column 267, and release the fixing between the second connecting block 282 and the third supporting column 267 and the fourth supporting column 264;

[0053] S1.2, lifting the front lifting lug 287 and the rear lifting lug 288, and applying an upward force to the belt rolling frame 201;

[0054] S1.3, take out the first connecting block 281 and the second connecting block 282;

[0055] S1.4, release the front lifting lug 287 and only lift the rear lifting lug 288;

[0056] S1.5, wrap the upper steel belt 22 around the first support column 269 and the second support column 268, and insert the upper steel belt 22 into the belt rolling frame 201;

[0057] S1.6. Install the first connection block 281 and the second connection block 282 back;

[0058] S1.7. Release the fixation of the rear lifting ear 288.

[0059] When installing the lower steel belt 23, the following steps can be taken:

[0060] S2.1, release the fixation between the first connecting block 281 and the first supporting column 269 and the third supporting column 267, release the fixation between the second connecting block 282 and the third supporting column 267 and the fourth supporting column 264, release the fixation between the third connecting block 283 and the lower surface 242 and the fixing seat 27, and release the fixation between the fourth connecting block 284 and the lower surface 242 and the fixing seat 27;

[0061] S2.2, lifting the front lifting lug 287 and the rear lifting lug 288, applying an upward force to the belt rolling frame 201, and fixing the horizontal height of the lower surface 242 by a forklift;

[0062] S2.3, take out the first connection block 281, the second connection block 282, the third connection block 283 and the fourth connection block 284;

[0063] S2.4, insert the upper steel strip 22 into the strip rolling frame 201 around the lower surface 242, the third support column 267, and the fourth support column 264;

[0064] S2.5. Install the first connection block 281 , the second connection block 282 , the third connection block 283 and the fourth connection block 284 .

[0065] It can be seen that during this process, the upper steel belt 22 and the lower steel belt 23 can always maintain structural integrity, and will not cause any damage to the upper steel belt 22 and the lower steel belt 23. The installation is simple, the operability is strong, and the work efficiency can be significantly improved.

[0066] Specifically, the upper steel belt 22 and the lower steel belt 23 will wear against the positive and negative electrode materials during the rolling process, causing ordinary steel belts to mix the worn particles into the positive and negative electrode materials. When the electron microscope is used for actual measurement, the mixed particles can be clearly found. Therefore, in order to solve the wear problem, the upper steel belt 22 and the lower steel belt 23 in this embodiment use high-strength 630 stainless steel belt as the material, which is a high-performance and high-wear material, and can effectively reduce the mixing of wear materials into the positive and negative electrode materials, greatly improving the product qualification rate.

[0067] Specifically, the first beam 245 is detachably disposed between the first connecting column 243 and the second connecting column 241 . After the first connecting column 243 is removed, the upper rotating roller 25 can be taken out from the belt calendering frame 201 .

[0068] In one embodiment, a transporting slot 271 is provided on the fixing seat 27. The transporting slot 271 can be used as a forklift position or a hoisting position to facilitate the movement of the belt rolling mechanism 2.

[0069] In one embodiment, the distance between the upper steel belt 22 and the lower steel belt 23 on the rolling channel 21 gradually decreases from the feed end to the discharge end. The upper steel belt 22 and the lower steel belt 23 cooperate with each other to gradually thin the membrane, thereby improving the uniformity of the membrane, increasing the tension of the membrane, and preventing the membrane from breaking.

[0070] Reference Figure 4 Specifically, the upper rotating roller 25 includes a first upper rotating roller group 251, a second upper rotating roller group 252 and a third upper rotating roller group 253 arranged side by side;

[0071] The lower rotating roller 26 includes a first lower rotating roller group 261 disposed below the first upper rotating roller group 251, a second lower rotating roller group 262 disposed below the second upper rotating roller group 252, and a third lower rotating roller group 263 disposed below the third upper rotating roller group 253;

[0072] As the rolling channel 21 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 belt rolling mechanism 2, the widths of the first upper rotating roller group 251, the second upper rotating roller group 252 and the third upper rotating roller group 253 increase successively from the feed end to the discharge end; the widths of the first lower rotating roller group 261, the second lower rotating roller group 262 and the third lower rotating roller group 263 increase successively.

[0073] Reference Figure 5 Specifically, the first connecting block 281, the second connecting block 282, the third connecting block 283, the fourth connecting block 284, the fifth connecting block 285, and the sixth connecting block 286 have the same structure, and all include an upper plane 291, a lower plane 292, and a connecting platform 293 disposed between the upper plane 291 and the lower plane 292;

[0074] The cross-sectional area of ​​the connecting platform 293 is smaller than the cross-sectional areas of the upper plane 291 and the lower plane 292; thus, there is sufficient operating space at the upper and lower ends of the connecting platform 293;

[0075] Taking the connection mode with the first connection block 281 as an example; the upper plane 291 is detachably connected to the first support column 269, and the lower plane 292 is detachably connected to the third support column 267;

[0076] A screw detachably connected to the first support column 269 is detachably provided on one side of the upper plane 291 facing the lower plane 292;

[0077] A screw detachably connected to the second supporting column 268 is detachably provided on a side of the lower plane 292 facing the upper plane 291 .

[0078] Specifically, the strip rolling mechanism 2 further includes an upper heating group 273 disposed on one side of the upper steel strip 22 and a lower heating group 272 disposed on one side of the lower steel strip 23;

[0079] The upper heating group 273 and the lower heating group 272 heat the material in the rolling channel 21 together. The material rolling and heating are performed simultaneously, which can reduce the viscosity of the material, activate the binder in the material, and make the material easier to be rolled into a film and form a film with uniform thickness.

[0080] Reference Figure 4The upper heating group 273 directly heats the upper steel belt 22, and the upper steel belt 22 transfers heat to the material in the rolling channel 21; the lower heating group 272 directly heats the lower steel belt 23, and the lower steel belt 23 transfers heat to the material in the rolling channel 21;

[0081] Among them, the heating temperature of the upper heating group 273 and the lower heating group 272 is 20°C-300°C. The heating temperature falls within this range, which can ensure that the material has moderate fluidity and does not soften excessively, thereby ensuring the activity of each component in the material and the quality of the finished product; and the roller rolling mechanism 3 is arranged adjacent to the belt rolling mechanism 2. If the material softens excessively, the thick film formed by rolling will have a high temperature when flowing out of the belt rolling mechanism 2, which is not conducive to manual guidance. The material will also easily stick to the roller rolling mechanism 3. The material will cool in the roller rolling mechanism 3, which will cause the surface of the rolled thick film to be uneven or even damaged. The temperature adjustment accuracy is ≤±1°C, and precise temperature control is helpful to form an ideal membrane pore structure, thereby optimizing the diffusion path of lithium ions and the charge and discharge performance of the battery.

[0082] Reference Figure 4 Specifically, from the rear perspective of the belt rolling mechanism 2, the upper heating group 273 includes a first upper heater 311, a second upper heater 312, a third upper heater 313, and a fourth upper heater 314; the lower heating group 272 includes a first lower heater 321, a second lower heater 322, a third lower heater 323, and a fourth lower heater 324;

[0083] The first upper heater 311 is fixedly disposed on the right side of the first upper rotating roller set 251; the first lower heater 321 is fixedly disposed on the right side of the first lower rotating roller set 261;

[0084] One end of the second upper heater 312 is fixed to the left side of the first upper rotating roller set 251, and the other end is fixed to the right side of the second upper rotating roller set 252; one end of the second lower heater 322 is fixed to the left side of the first lower rotating roller set 261, and the other end is fixed to the right side of the second lower rotating roller set 262;

[0085] One end of the third upper heater 313 is fixed to the left side of the second upper rotating roller set 252, and the other end is fixed to the right side of the third upper rotating roller set 253; one end of the third lower heater 323 is fixed to the left side of the second lower rotating roller set 262, and the other end is fixed to the right side of the third lower rotating roller set 263;

[0086] The fourth upper heater 314 is fixed to the left side of the third upper rotating roller set 253; the fourth lower heater 324 is fixed to the left side of the third lower rotating roller set 263. Each heater is continuously arranged between each roller set, which helps to keep the diaphragm continuously heated, prevent the diaphragm from breaking or cracking during the production process, and improve the overall stability and consistency of the product.

[0087] Specifically, the first upper heater 311, the second upper heater 312, the third upper heater 313, the fourth upper heater 314, the first lower heater 321, the second lower heater 322, the third lower heater 323, and the fourth lower heater 324 are all infrared heaters.

[0088] Refer to Figure 7 , in an embodiment, an upper cover plate 344 is provided on the outer side of the belt stretching and pressing frame 201 and on one side of the upper rotating roller 25;

[0089] A front upper deviation correction drive 331, a rear upper deviation correction drive 332, an upper fixing plate 333 obliquely installed on the upper cover plate 344, a front upper slide rail (not shown in the figure) vertically installed on the upper fixing plate 333, and a rear upper slide rail (not shown in the figure) are installed on the upper cover plate 344; a front upper slider (not shown in the figure) is slidably arranged in the front upper slide rail, and a rear upper slider (not shown in the figure) is slidably arranged in the rear upper slide rail; an upper deviation correction roller 334 is rotatably connected between the front upper slider and the rear upper slider, and the upper deviation correction roller 334 is in rolling contact with the upper steel belt 22;

[0090] The output end of the front upper deviation correction drive 331 passes through the upper fixing plate 333 and is fixedly connected to the front upper slider, and the front upper deviation correction drive 331 is used to drive the front upper slider to slide on the front upper slide rail;

[0091] The output end of the rear upper deviation correction drive 332 passes through the upper fixing plate 333 and is fixedly connected to the rear upper slider, and the rear upper deviation correction drive 332 is used to drive the rear upper slider to slide on the rear upper slide rail;

[0092] Refer to Figure 7 , the second beam 244 is equipped with an upper ultrasonic position detection group 335, and the upper ultrasonic position detection group 335 is communicatively connected to the front upper deviation correction drive 331 and the rear upper deviation correction drive 332;

[0093] Refer to Figure 8 , the upper ultrasonic position detection group 335 includes an upper fixing frame 336 and a first position adjustment group 337 for adjusting the upper fixing frame 336. The upper fixing frame 336 is in a "C" shape, and long-strip upper ultrasonic detectors 338 are provided at both relatively arranged ends of the upper fixing frame 336;

[0094] The first position adjustment group 337 is specifically an L-shaped frame, and the position of the L-shaped frame to be fixed can be selected by screws, thereby adjusting the position of the upper ultrasonic detector 338 to adapt to upper steel belts 22 of different widths;

[0095] The edge of the upper steel belt 22 is located between the two upper ultrasonic detectors 338 .

[0096] When the upper ultrasonic position detection group 335 detects that the upper steel belt 22 is offset, the rear upper deviation correction drive 332 or the front upper deviation correction drive 331 indirectly drives the two ends of the upper deviation correction roller 334 to swing, thereby preventing the upper steel belt 22 from deviating, so that the upper steel belt 22 always remains in the middle of the upper deviation correction roller 334.

[0097] In one embodiment, a lower cover plate 339 is provided outside the strip calendering frame 201 and on one side of the lower rotating roller 26;

[0098] A front lower deviation correction drive (not shown in the figure), a rear lower deviation correction drive (not shown in the figure), a lower fixed plate (not shown in the figure) obliquely installed under the lower cover plate 339, a front lower slide rail (not shown in the figure) and a rear lower slide rail (not shown in the figure) vertically installed under the lower fixed plate are installed under the lower cover plate 339; a front lower slider (not shown in the figure) is slidably arranged in the front lower slide rail, and a rear lower slider (not shown in the figure) is slidably arranged 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 23;

[0099] The extension direction of the front lower deviation correcting drive and the rear lower deviation correcting drive is set toward the lower surface 242;

[0100] The output end of the front lower deflection correction drive passes through the lower fixed plate and is fixedly connected to the front lower slider, and the front lower deflection correction drive is used to drive the front lower slider to slide on the front lower slide rail;

[0101] The output end of the rear lower deviation correction drive passes through the lower fixed plate and is fixedly connected to the rear lower slider, and the rear lower deviation correction drive is used to drive the rear lower slider to slide on the rear lower slide rail;

[0102] The fixing seat 27 is provided with a lower ultrasonic position detection group 340, and the lower ultrasonic position detection group 340 is in communication connection with the front lower deviation correction drive and the rear lower deviation correction drive;

[0103] The lower ultrasonic position detection group 340 includes a lower fixing frame 341 and a second position adjustment group 342 for adjusting the lower fixing frame 341. The lower fixing frame 341 is in a "C" shape, and long-strip lower ultrasonic detectors 343 are provided at both relatively arranged ends of the lower fixing frame 341. The structure and function of the second position adjustment group 342 are the same as those of the first position adjustment group 337.

[0104] When the lower ultrasonic detector 343 detects that the lower steel strip 23 is offset, the rear lower deviation correction drive or the front lower deviation correction drive indirectly drives both ends of the lower deviation correction roller to swing, thereby preventing the lower steel strip 23 from running off track and keeping the lower steel strip 23 always in the middle of the lower deviation correction roller.

[0105] The edge of the lower steel strip 23 is located between the two lower ultrasonic detectors 343.

[0106] An opening (not shown in the figure) is provided on the lower surface 242 and above the lower ultrasonic detector 343. Since the position between the lower surface 242 and the fixed seat 27 is narrow, setting an opening provides enough space to adjust the position of the lower ultrasonic detector 343.

[0107] Existing steel strips basically use the method of detecting and adjusting rollers for steel strip deviation correction. However, when using this method, the two sides of the steel strip are easily stretched, resulting in a state where the steel strip becomes flat in the middle and curled at both sides. This method reduces the uniformity requirement and at the same time accelerates the steel strip replacement and maintenance time.

[0108] Refer to Figure 2 , in an embodiment, it further includes an integration frame 7. The roller rolling mechanism 3 and the composite roller 4 are both arranged on the integration frame 7, reducing the length of the strip running path. The roller rolling mechanism 3 further includes a backing roller 33.

[0109] The composite roller 4 is adjacent to the thinning feeding roller 32. During the secondary thinning process, if the thinning feeding roller 32 is deformed, the composite roller 4 can be used as a support. Similarly, the backing roller 33 is adjacent to the thinning roller 31, and the backing roller 33 can support the thinning roller 31, reducing the deformation of the thinning roller 31 and avoiding uneven thickness of the rolled thin film sheet.

[0110] The axes of the backing roller 33, the thinning roller 31, the thinning feeding roller 32, and the composite roller 4 are all on the same horizontal plane.

[0111] The integration frame 7 is provided with a first servo pressure oil cylinder 71 for directly applying pressure to the back roller 33 and a second servo pressure oil cylinder 72 for directly applying pressure to the composite roller 4. The pressure direction of the first servo pressure oil cylinder 71 is toward the composite roller 4, and the pressure direction of the second servo pressure oil cylinder 72 is toward the back roller 33. The first servo pressure oil cylinder 71 or the second servo pressure oil cylinder 72 can be extended and retracted to simultaneously adjust the thickness of the thin film sheet and the bonding strength between the thin film sheet and the film to be composited; the first servo pressure oil cylinder 71 includes a first oil cylinder pressure sensor and a first actuator, and the second servo pressure oil cylinder 72 includes a second oil cylinder pressure sensor and a second actuator;

[0112] The pressure directions of the first servo pressure cylinder 71 and the second servo pressure cylinder 72 are arranged to face each other;

[0113] The detection mechanism 5 is provided with a thickness gauge, which is used to identify the film thickness and film width and send a film thickness signal;

[0114] The recognition error of the thickness gauge is ≤±1.0%, and the film thickness density detected by the thickness gauge can reach ≤±1.5%;

[0115] It also includes a controller connected to the thickness gauge, the first servo pressure cylinder 71 and the second servo pressure cylinder 72 by signals;

[0116] The first oil cylinder pressure sensor and the second oil cylinder pressure sensor are used to transmit signal pressure values ​​to the controller;

[0117] The controller can be used to receive the film thickness signal transmitted by the thickness gauge, receive the first pressure signal transmitted by the first cylinder pressure sensor, receive the second pressure signal transmitted by the second cylinder pressure sensor, receive a preset film thickness signal, compare the preset film thickness signal with the film thickness signal, calculate a preset first pressure signal and a preset second pressure signal according to the preset film thickness signal, calculate the difference between the preset first pressure signal and the first pressure signal, calculate the difference signal between the preset second pressure signal and the second pressure signal, and send the difference signal to the first actuator and the second actuator;

[0118] The first actuator and the second actuator are used to receive the difference signal sent by the controller and drive the first servo pressure cylinder 71 and the second servo pressure cylinder 72 to apply pressure, thereby achieving real-time monitoring and automatic control of film thickness.

[0119] Specifically, the roller diameter size relationship among the back roller 33, the thinning transfer roller 32, the thinning roller 31 and the composite roller 4 satisfies: the thinning transfer roller 32 = composite roller 4 > back roller 33 > thinning roller 31; the radius of the thinning roller 31 is different from that of the thinning transfer roller 32. During the thinning process, different linear speeds are generated on both sides of the thick film sheet. The speed at which the thick film sheet moves on one side of the thinning roller 31 is greater than the speed at which the thick film sheet moves on the other side of the thinning transfer roller 32. This helps to thin the thick film sheet at a variable speed, and can further apply shear force to the thick film sheet to promote its fibrillation and improve the mechanical strength of the film.

[0120] Reference Figure 2 In one embodiment, a primary cutting component 81 is provided between the belt calendering mechanism 2 and the roller calendering mechanism 3, and the primary cutting component 81 is used to trim both side edges of the thick film sheet;

[0121] A secondary cutting assembly 82 is disposed on one side of the thinning transfer roller 32, and the secondary cutting assembly 82 is used to trim both side edges of the film sheet.

[0122] The primary cutting component 81 is used to cut off the two side edges of the thick film sheet so that the thick film sheet forms a smooth film edge to avoid the thick film sheet cracking due to uneven edges during the conveying process; and, cutting with the primary cutting component 81 can prevent the width of the thick film sheet from exceeding the roller shaft length of the thinning roller 31, resulting in different thicknesses of the thinned films; after the thick film sheet is rolled by the thinning roller 31 and the thinning transfer roller 32, the film width becomes longer, and the secondary cutting component 82 is used to trim both sides of the film to prevent the film from exceeding the roller shaft length of the composite roller 4 and the thinning transfer roller 32, and to prevent the width of the film from being greater than the width of the film to be composited. When the film to be composited is a single-sided electrode film, the double-sided electrode film formed by the composite of the single-sided electrode film and the film sheet has a width of the film to be composited on both sides of the current collector that is greater than the width of the current collector, which will cause an electrode short circuit and failure of the double-sided electrode film.

[0123] Specifically, a first visual recognition mechanism 513 is provided on one side of the portion where the thinning transfer roller 32 rolls in contact with the film sheet, and the first visual recognition mechanism 513 is used to detect the evenness of the film sheet after being cut by the secondary cutting assembly 82 .

[0124] Reference Fig. 9 More specifically, the secondary cutting assembly 82 includes a rotating hand wheel 834, a screw rod 833, an upper cutting slide rail 832, a lower cutting slide rail 831, a left screw rod nut 825, a right screw rod nut 826, a left slide seat 827, a right slide seat 828, a left cutter 829, a right cutter 830, a left material receiving inclined plate 821, a right material receiving inclined plate 822, a left cutter driving member 823 and a right cutter driving member 824;

[0125] The cutting upper slide rail 832 is located above the screw rod 833 and is arranged parallel to the screw rod 833;

[0126] The cutting lower rail 831 is located below the screw rod 833 and is arranged parallel to the screw rod 833;

[0127] The rotating hand wheel 834 is fixedly connected to the screw rod 833;

[0128] The screw rod 833 has left threads and right threads on both sides respectively;

[0129] The left screw nut 825 is in transmission connection with the left thread, and the right screw nut 826 is in transmission connection with the right thread;

[0130] The left slide seat 827 is fixed on the left screw nut 825 and is slidably disposed on the cutting upper slide rail 832 and the cutting lower slide rail 831;

[0131] The right slide seat 828 is fixed on the right screw nut 826 and is slidably disposed on the cutting upper slide rail 832 and the cutting lower slide rail 831;

[0132] One end of the left material receiving inclined plate 821 is fixed on the left slide 827, and is arranged on the side of the left cutter 829 facing away from the right cutter 830 and above the center of the left cutter 829. The left material receiving inclined plate 821 is arranged with its inclination direction toward the bottom of the electrode composite device.

[0133] One end of the right material receiving inclined plate 822 is fixed on the right slide seat 828 and is arranged on the side surface of the right cutter 830 facing away from the left cutter 829 and above the center of the right cutter 830. The left material receiving inclined plate 821 is arranged with its inclination direction toward the bottom of the electrode composite device.

[0134] The fixed end of the left knife driving member 823 is arranged on the left slide 827, and the driving member of the left knife driving member 823 is connected to the output end of the left cutter 829;

[0135] The fixed end of the right knife driving member 824 is disposed on the right sliding seat 828 , and the driving member of the right knife driving member 824 is connected to the output end of the right cutter 830 .

[0136] Taking cutting of a single-sided electrode film as an example, the working principle of the secondary cutting component 82 is as follows:

[0137] The rotating hand wheel 834 is turned to drive the screw 833 to rotate in the same direction, and the left screw nut 825 and the right screw nut 826 slide synchronously in opposite directions, so that the relative distance between the left cutter 829 and the right cutter 830 becomes farther; when the left cutter 829 and the right cutter 830 are adjusted to a suitable position, the left knife driving member 823 and the right knife driving member 824 are started, and the left cutter 829 and the right cutter 830 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 821 and the right material connecting inclined plate 822 to the bottom of the roller rolling mechanism 3 respectively under the action of gravity, completing the fine cutting of the single-sided electrode diaphragm.

[0138] The first visual recognition mechanism 513 is disposed on the left slide 827 and the right slide 828. The rotating hand wheel 834 drives the first visual recognition mechanism 513 to move simultaneously with the left cutter 829 and the right cutter 830 to identify the flatness of the film cutting.

[0139] Reference Figure 1 In one embodiment, the feeder 1 includes an upward feeding port 12, and a feeding ladder 13 is provided on one side of the feeder 1. The height of the feeding port 12 is higher than the height of the operator, and the feeding ladder 13 is used by the operator to feed the material into the feeding port 12.

[0140] Specifically, the detection mechanism 5 includes a frame 501, a winding channel 511 is provided on the frame 501, and second visual recognition mechanisms 512 are provided on both upper and lower sides of the winding channel 511. The visual recognition mechanism 512 is used to detect the alignment between the film sheet and the film to be composited.

[0141] Reference Figure 3 In one embodiment, the overturning and unwinding mechanism 6 further comprises an overturning frame 61 and a turntable 62, and the winding group 601 and the unwinding group 602 are rotatably arranged on the turntable 62; the film to be composited is a current collector or a single-sided electrode film; when the film to be composited is a current collector, the finished film is a single-sided electrode film; when the film to be composited is a double-sided electrode film, the finished film is a double-sided electrode film;

[0142] In the initial state, the unwinding group 602 is sleeved with a current collector roll, and the current collector roll is pulled between the thinning transfer roller 32 and the composite roller 4, and the thinning transfer roller 32 and the composite roller 4 work to composite the membrane sheet with the to-be-compounded membrane to form a single-sided electrode membrane; the single-sided electrode membrane is pulled, and one end of the single-sided electrode membrane is fixed on the winding group 601, and the winding group 601 and the unwinding group 602 work simultaneously; until the unwinding group 602 is emptied, the turntable 62 rotates to exchange the relative positions of the unwinding group 602 and the winding group 601;

[0143] The single-sided electrode film on the winding group 601 is pulled between the thinning transfer roller 32 and the composite roller 4, and the thinning transfer roller 32 and the composite roller 4 work to composite the membrane with the single-sided electrode film to form a double-sided electrode film; the double-sided electrode film is pulled and one end of the double-sided electrode film is fixed on the unwinding group 602, and the winding group 601 and the unwinding group 602 work simultaneously to obtain a roll of double-sided electrode film.

[0144] The winding group 601 and the unwinding group 602 are both arranged on the turntable 62. The turntable 62 rotates to quickly switch the relative positions of the unwinding group 602 and the winding group 601. In the process of manufacturing the double-sided composite film, when the winding group 601 is full of single-sided electrode film, the turntable 62 rotates, and the winding group 601 switches to the state of collecting the double-sided electrode film; similarly, when the current collector on the unwinding group 602 is emptied, the turntable 62 rotates, and the unwinding group 602 switches to releasing the single-sided electrode film.

[0145] It should be noted that the winding group 601 and the unwinding group 602 in this embodiment do not represent a fixed component, and the physical components of the two are interchangeable, and mainly refer to the unwinding group 602 in the unwinding state and the winding group 601 in the winding state;

[0146] In the present embodiment, a reeling group 601 and an unreeling group 602 are integrated on a flip frame 61, and one mechanism realizes the reeling and unreeling functions, that is, when manually leading the tape, the leading operation can be completed by moving between the composite roller 4 and the flip reeling and unreeling mechanism 6, while the reeling group 601 and the unreeling group 602 in the prior art are often arranged as two separate mechanisms, and manual leading the tape needs to reciprocate between the reeling group 601, the unreeling group 602 and the mechanism positions where the composite roller 4 is located, and the leading distance is long and the leading operation is complicated, while the present embodiment can shorten the leading distance and simplify the leading operation, thereby further improving the production efficiency of the electrode membrane.

[0147] Reference Fig.10 , Fig.11 As an explanation, the flipping and unwinding mechanism 6 further includes a first roller 611 and a second roller 621, and the turntable 62 includes a first turntable 612 and a second turntable 622; the first roller 611 and the second roller 621 are both rotatably disposed on the first turntable 612 at one end, and rotatably disposed on the second turntable 622 at the other end;

[0148] The first rotating disk 612 and the second rotating disk 622 can be rotated to adjust the positions of the first roller 611 and the second roller 621 relative to the roller pressing mechanism 3 .

[0149] When the first roller 611 is loaded with a current collector, the first roller 611 is in an unwinding state, namely, the unwinding group 602. At this time, the second roller 621 is in a state of winding up the single-sided electrode film, namely, the winding group 601.

[0150] When the first rotating disk 612 and the second rotating disk 622 rotate synchronously, and the second roller 621 is in a state of releasing the single-sided electrode film, the second roller 621 is the unwinding group 602; at this time, the first roller 611 is in a state of winding up the double-sided electrode film, that is, the winding group 601.

[0151] Specifically, it includes a first central axis 613, a second central axis 623, a first shaft wheel 614, a second shaft wheel 615, a third shaft wheel 624, a fourth shaft wheel 625, a first unwinding and rewinding drive member 616, a second unwinding and rewinding drive member 626, a first roller 617, a second roller 627, a first transmission chain (not shown in the figure), a second transmission chain (not shown in the figure), a first driving wheel 618, a second driving wheel 628, a third transmission chain (not shown in the figure) and a fourth transmission chain (not shown in the figure).

[0152] The first central axis 613 is arranged on the center of the first turntable 612 and is located on the side facing away from the second turntable 622; the second central axis 623 is arranged on the center of the second turntable 622 and is located on the side facing away from the first turntable 612; the first axle wheel 614 and the second axle wheel 615 are rotatably arranged on the first central axis 613, and the relative positions of the first axle wheel 614 and the second axle wheel 615 are fixed.

[0153] Reference Fig.10 , the third shaft wheel 624 and the fourth shaft wheel 625 are rotatably disposed on the second central axis 623, and the relative positions of the third shaft wheel 624 and the fourth shaft wheel 625 are fixed;

[0154] The first roller 617 is connected to one end of the first roller 611, and the first roller 617, the first shaft wheel 614, and the second shaft wheel 615 are all located on the side of the same surface of the first turntable 612; the first transmission chain is meshed with the first roller 617 and the first shaft wheel 614; the first driving wheel 618 is provided on the first winding and unwinding driving member 616, and the second transmission chain is meshed with the first driving wheel 618 and the second shaft wheel 615.

[0155] Reference Fig.11 The second roller 627 is connected to one end of the second roller 621, and the second roller 627, the third shaft wheel 624, and the fourth shaft wheel 625 are all located on the side of the same surface of the second turntable 622; the third transmission chain is meshed with the second roller 627 and the third shaft wheel 624; the second driving wheel 628 is provided on the second unwinding and winding driving member 626, and the fourth transmission chain is meshed with the second driving wheel 628 and the fourth shaft wheel 625.

[0156] In this embodiment, a control circuit board and a winding thickness sensor can be arranged on the first rotating disk 612, and the arrangement of the electronic device needs to reasonably plan the lines to avoid the wires being arranged in a disorderly manner on the device and affecting the normal operation of the flipping and unwinding winding mechanism 6; taking the driving of the first roller 611 to rotate as an example, if the first driving wheel 618 is used to directly drive the first roller 617 for transmission, the first driving wheel 618 and the first roller 617 need to be located on the same plane, and as the first rotating disk 612 rotates, the wires on its inner surface can easily get entangled with the first driving wheel 618, which not only affects the rotation of the first rotating disk 612, but also causes the first driving wheel 618 to be unable to mesh with the first roller 617, and in this embodiment, since the first shaft wheel 614 and the second shaft wheel 615 are both located on the first central axis 613, the first driving wheel 618 and the first roller 617 are located on two planes, which can avoid the wires on the inner surface of the first rotating disk 612 from getting entangled with the first driving wheel 618.

[0157] Specifically, a plurality of teeth are provided on the edge of the first turntable 612, a turntable driving member 630 is provided on one side of the first turntable 612, and a third active wheel 631 meshing with the edge of the first turntable 612 is provided at the output end of the turntable driving member 630, and the turntable driving member 630 drives the third active wheel 631 to rotate, thereby driving the first turntable 612 to rotate, and since the first turntable 612 and the second turntable 622 are both connected to the first roller 611 and the second roller 621, the rotation of the first turntable 612 can drive the second turntable 622 to rotate synchronously; thereby adjusting the relative positions of the first roller 611 and the second roller 621; realizing the state switching of the first roller 611 between the winding group 601 and the unwinding group 602, and realizing the state switching of the second roller 621 between the winding group 601 and the unwinding group 602.

[0158] An electrode membrane, which is prepared by the electrode production equipment in any one of the above embodiments, and the loading capacity of a single side of the electrode membrane is 12mg / cm2-24mg / cm2, which meets the manufacturing standards, reduces the process steps and improves the production efficiency.

[0159] 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. An electrode production device, characterized in that: include: A feeding machine (1), a belt calendering mechanism (2), a roller calendering mechanism (3), a composite roller (4), a detection mechanism (5) and a reversing and unwinding mechanism (6); The feeder (1) is used to mix and stir the material to make the material fiberized; wherein the feeder (1) is provided with a discharge nozzle (11); The belt pressing mechanism (2) is used to press the material into a thick film sheet, the belt pressing mechanism (2) comprises a pressing channel (21), and the discharge nozzle (11) is arranged on the feed end of the pressing channel (21); The roller calendering mechanism (3) comprises a thinning roller (31) and a thinning transfer roller (32) adjacent to the thinning roller (31); the composite roller (4) is rotatably provided on one side of the thinning transfer roller (32); the thinning roller (31) and the thinning transfer roller (32) cooperate with each other to calender a thick film sheet into a thin film sheet; the thin film sheet is attached to the thinning transfer roller (32) and transferred to between the thinning transfer roller (32) and the composite roller (4); the thinning transfer roller (32) and the composite roller (4) cooperate with each other to composite the thin film sheet with the film to be composited to form a finished film; The detection mechanism (5) is used to detect the alignment between the thin film sheet on the finished film and the film to be composited and to detect the thickness of the film sheet; The flipping unwinding and rewinding mechanism (6) is provided with a rewinding group (601) and an unwinding group (602); the film to be composited on the unwinding group (602) is pulled between the thinning transfer roller (32) and the composite roller (4), and the unwinding group (602), the composite roller (4) and / or the thinning transfer roller (32) are rotated to release the film to be composited; at the same time, the finished film is pulled, and one end of the finished film is fixed on the rewinding group (601), and the rewinding group (601) is operated to rewind.

2. The electrode production equipment according to claim 1, characterized in that: The belt rolling mechanism (2) comprises an upper steel belt (22) arranged above the rolling channel (21), a lower steel belt (23) arranged below the rolling channel (21), a pressure member (24), an upper rotating roller (25) and a lower rotating roller (26); The upper rotating roller (25) is in rolling contact with the upper steel belt (22); the lower rotating roller (26) is in rolling contact with the lower steel belt (23); There are at least two pressure members (24) which are arranged along the axial direction of the upper rotating roller (25). The pressure members (24) are used to apply pressure to the axial ends of the upper rotating roller (25). The pressure is transmitted to the edges on both sides of the upper steel belt (22) through the axial ends of the upper rotating roller (25) to extend and press the material. The pressure P applied by the pressure member (24) to the upper rotating roller (25) satisfies the range of 0t<P≤9900N.

3. The electrode production equipment according to claim 2, characterized in that: The strip rolling mechanism (2) further comprises an upper heating group (271) arranged on one side of the upper steel strip (22) and a lower heating group (272) arranged on one side of the lower steel strip (23); The upper heating group (271) directly heats the upper steel belt (22), and the upper steel belt (22) transfers heat to the material in the rolling channel (21); the lower heating group (272) directly heats the lower steel belt (23), and the lower steel belt (23) transfers heat to the material in the rolling channel (21); The heating temperature of the upper heating group (271) and the lower heating group (272) is 20°C-300°C, and the temperature adjustment accuracy is ≤±1°C.

4. The electrode production equipment according to claim 1, characterized in that: It also includes an integrated frame (7), the roller calendering mechanism (3) and the composite roller (4) are both arranged on the integrated frame (7), and the roller calendering mechanism (3) also includes a backing roller (33); The axes of the backing roller (33), the thinning roller (31), the thinning material transfer roller (32) and the composite roller (4) are all on the same horizontal plane; The integration frame (7) is provided with a first servo pressure oil cylinder (71) for directly applying pressure to the back roller (33) and a second servo pressure oil cylinder (72) for directly applying pressure to the composite roller (4); the pressure direction of the first servo pressure oil cylinder (71) is toward the composite roller (4), and the pressure direction of the second servo pressure oil cylinder (72) is toward the back roller (33); the first servo pressure oil cylinder (71) includes a first oil cylinder pressure sensor and a first actuator, and the second servo pressure oil cylinder (72) includes a second oil cylinder pressure sensor and a second actuator; The pressure directions of the first servo pressure oil cylinder (71) and the second servo pressure oil cylinder (72) are arranged to face each other; The detection mechanism (5) is provided with a thickness gauge, which is used to identify the film thickness and film width and send a film thickness signal; It also includes a controller connected to the thickness gauge, the first servo pressure cylinder (71) and the second servo pressure cylinder (72) by signals; The first oil cylinder pressure sensor and the second oil cylinder pressure sensor are used to transmit signal pressure values ​​to the controller; The controller can be used to receive the film thickness signal transmitted by the thickness gauge, receive the first pressure signal transmitted by the first cylinder pressure sensor, receive the second pressure signal transmitted by the second cylinder pressure sensor, receive a preset film thickness signal, compare the preset film thickness signal with the film thickness signal, calculate a preset first pressure signal and a preset second pressure signal according to the preset film thickness signal, calculate the difference between the preset first pressure signal and the first pressure signal, calculate the difference signal between the preset second pressure signal and the second pressure signal, and send the difference signal to the first actuator and the second actuator; The first actuator and the second actuator are used to receive the difference signal sent by the controller and drive the first servo pressure cylinder (71) and the second servo pressure cylinder (72) to apply pressure.

5. The electrode production equipment according to claim 4, characterized in that: The detection mechanism (5) comprises a frame (501), a winding channel (511) is provided on the frame (501), and second visual recognition mechanisms (512) are provided on both upper and lower sides of the winding channel (511), and the visual recognition mechanism (512) is used to detect the alignment between the film sheet and the film to be composited.

6. The electrode production equipment according to claim 1, characterized in that: The feeder (1) comprises a feeding port (12) facing upward, and a feeding ladder (13) is provided on one side of the feeder (1).

7. The electrode production equipment according to claim 1, characterized in that: A primary cutting component (81) is provided between the belt calendering mechanism (2) and the roller calendering mechanism (3), and the primary cutting component (81) is used to trim the two side edges of the thick film sheet; A secondary cutting component (82) is provided on one side of the thinning transfer roller (32), and the secondary cutting component (82) is used to trim the two side edges of the film sheet.

8. The electrode production equipment according to claim 7, characterized in that: A first visual recognition mechanism (513) is provided on one side of the portion where the thinning material transfer roller (32) rolls in contact with the film sheet, and the first visual recognition mechanism (513) is used to detect the evenness of the film sheet after being cut by the secondary cutting component (82).

9. The electrode production equipment according to claim 1, characterized in that: The overturning and unwinding mechanism (6) further comprises an overturning frame (61) and a turntable (62), and the winding group (601) and the unwinding group (602) are rotatably arranged on the turntable (62); the film to be composited is a current collector or a single-sided electrode film; when the film to be composited is a current collector, the finished film is a single-sided electrode film; when the film to be composited is a double-sided electrode film, the finished film is a double-sided electrode film; In the initial state, the unwinding group (602) is provided with a current collector roll, and the current collector roll is pulled between the thinning material transfer roller (32) and the composite roller (4), and the thinning material transfer roller (32) and the composite roller (4) work to composite the membrane sheet with the to-be-compounded membrane to form a single-sided electrode membrane; the single-sided electrode membrane is pulled, and one end of the single-sided electrode membrane is fixed on the winding group (601), and the winding group (601) and the unwinding group (602) work simultaneously; until the unwinding group (602) is emptied, the turntable (62) rotates to exchange the relative positions of the unwinding group (602) and the winding group (601); The single-sided electrode film on the winding group (601) is pulled between the thinning transfer roller (32) and the composite roller (4), and the thinning transfer roller (32) and the composite roller (4) work to composite the membrane with the single-sided electrode film to form a double-sided electrode film; the double-sided electrode film is pulled and one end of the double-sided electrode film is fixed on the unwinding group (602), and the winding group (601) and the unwinding group (602) work simultaneously to obtain a roll of double-sided electrode film.

10. An electrode membrane, characterized in that: The electrode membrane is prepared by the electrode production equipment described in any one of claims 1 to 9, and the loading amount of a single side of the electrode membrane is 12 mg / cm 2 -24mg / cm 2 .

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