CN116995184A - Dry-method motor calendaring molding module, equipment and method - Google Patents

Abstract

The application relates to the technical field of electrode production and processing equipment, in particular to a dry motor calendaring molding module, equipment and a method. A dry electrode calendaring molding module comprises a breakthrough roller set, a plurality of repair roller sets and a molding roller set which are sequentially arranged; the curvature of the breakthrough roller and the curvature of the repair roller are sequentially reduced along the conveying direction of the electrode membrane; the dry electrode calendaring molding equipment comprises a feeding assembly, a dry electrode calendaring molding module, a cooler and a detection device; also provides a dry electrode calendaring molding method. According to the application, through the arrangement of the break-through roller, the trimming roller and the forming roller with gradually reduced curvature, the electrode membrane can be gradually unfolded and compacted, and the phenomenon of central bubbles or surface wrinkles of the electrode membrane occurs, so that the quality of the electrode is improved; the electrode calendaring molding production with full automation, high efficiency, high stability, high quality and low cost can be realized, and the manufacturing cost and the equipment operation cost are greatly reduced.

Description

Dry-method motor calendaring molding module, equipment and method

Technical Field

The application relates to the technical field of electrode production and processing equipment, in particular to a dry motor calendaring molding module, equipment and a method.

Background

The existing electrode is mostly produced by wet coating, electrode materials and conductive, adhesive and other materials are mixed into slurry according to proportion, then the slurry is coated on the surface of a current collector, and then the slurry is dried and molded together. In addition, some dry electrode forming methods are studied, but all the dry electrode forming methods are performed by using straight rollers for press forming, but the method needs larger pressing force, and in the press forming process, if the middle part of an electrode membrane is provided with bubbles at the beginning, the traditional calendaring method can easily generate phenomena of air holes, surface wrinkles and the like in the electrode membrane, so that the electrode quality is affected.

Disclosure of Invention

The application provides a dry motor calendaring molding module, equipment and a method for overcoming the problems that the traditional calendaring mode in the background technology can easily cause phenomena of air holes, wrinkles and the like in an electrode film and influence the quality of the electrode. The application can reduce the phenomena of air holes, surface wrinkles and the like in the electrode film.

In order to solve the technical problems, the application adopts the following technical scheme: a dry electrode calendaring molding module is used for electrode membrane calendaring molding and comprises the following components in sequence along the conveying direction of the electrode membrane:

a breakthrough roller set provided with breakthrough rollers for calendaring the electrode membrane;

the repair roller units are respectively provided with repair rollers for calendaring the electrode membrane;

the forming roller unit is provided with a forming roller for calendaring the electrode membrane;

the forming roller is a straight roller, the breaking roller and the shaping roller are curved surface rollers, and the curvature of the breaking roller and the curvature of the shaping roller are sequentially reduced along the conveying direction of the electrode membrane.

Preferably, the number of the profiling rollers is at least 2.

Further, break-through roller unit includes the fixed bolster, upper and lower relatively set up 2 break-through roller, be used for adjusting 2 the lifting means of the roll gap between the break-through roller, the lifting means is installed the top of fixed bolster and be connected with the break-through roller at top.

Further, the lifting assembly comprises a connecting frame, a ball head oil cylinder and a sliding block, wherein two ends of the breakthrough roller are installed on a roller frame arranged on the fixed support through bearings with seats, a cylinder seat of the ball head oil cylinder is installed at the top of the fixed support, the output end of the ball head oil cylinder is connected with one side of the connecting frame, the other side of the connecting frame is connected with the roller frame, two ends of the connecting frame are respectively connected with the sliding block, and the sliding block is in sliding connection with a linear sliding rail arranged on the fixed support.

Further, the fixed support is provided with a gap adjusting assembly between the sliding block and the top of the fixed support, the gap adjusting assembly comprises a first oblique iron and a second oblique iron, the first oblique iron and the second oblique iron are arranged in an inclined plane fit mode, and one side of the first oblique iron is connected with a driving assembly used for driving the first oblique iron to translate along the axial direction of the break-through roller.

Further, the drive assembly includes speed reducer, lead screw and with lead screw threaded connection's drive nut, the output of speed reducer with the lead screw transmission is connected, the inside cavity of first oblique iron, drive nut fixed connection is in on the lateral wall that first oblique iron is close to speed reducer one side, the lead screw is movable simultaneously wears to establish drive nut with inside the first oblique iron, clearance adjustment assembly still includes the code chi that is used for measuring first oblique iron translation distance that is equipped with in the relative both sides of first oblique iron.

Further, the bottom of breaking through roller group still is equipped with connects roller mechanism, connect roller mechanism to include frame, travelling car, jacking cylinder and be used for supporting the roller anchor clamps that connect that break through the roller, travelling car movable set up in the frame top, jacking cylinder installs on the frame, connect roller anchor clamps to be located on the travelling car.

The dry electrode calendaring molding equipment comprises the following steps:

the feeding assembly is used for conveying the electrode membrane to be formed into a feeding material;

the dry electrode calendaring molding module is used for calendaring the electrode membrane;

a cooler for cooling the molded electrode;

and the detection device is used for detecting the formed electrode membrane.

And an induction heater and a first infrared thermometer are further arranged between the feeding assembly and the forming module.

Further, a second infrared thermometer is arranged between the cooler and the detection device.

Furthermore, a trimming shear for trimming redundant rim charge of the electrode diaphragm is further arranged between the second infrared thermometer and the detection device.

Further, the detection device comprises an area density detection mechanism and a CCD detection mechanism.

The dry motor calendaring method is based on the dry electrode calendaring equipment and comprises the following steps of:

s1, feeding an electrode membrane;

s2, sequentially rolling and forming the electrode membrane by a plurality of curved surface type rollers with gradually reduced curvatures;

s3, rolling the electrode membrane again through a straight roller;

s4, trimming and detecting the formed electrode membrane;

s5, blanking the formed electrode membrane.

Compared with the prior art, the beneficial effects are that:

1. according to the application, through the arrangement of the break-through roller, the trimming roller and the forming roller with gradually reduced curvature, the electrode membrane can be gradually unfolded and compacted, and the phenomenon of central bubbles or surface wrinkles of the electrode membrane occurs, so that the quality of the electrode is improved; and the production is realized without larger heat and power, thus greatly reducing the manufacturing cost and the equipment operation cost.

2. The application also improves the structure of the rolling mechanism, adds the lifting component and the clearance adjusting component, can accurately adjust the clearance between the upper working roller and the lower working roller, and can stably transmit the reaction force of the working load of the upper working roller to the fixed bracket.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1.

Fig. 2 is a schematic view of the structure of the break-through roller unit in example 1.

Fig. 3 is a schematic diagram of the structure of the side surface of the break-through roller unit in example 1.

Fig. 4 is a schematic view of the structure of the lifting assembly in embodiment 1.

Fig. 5 is a schematic view of the structure of the break-through roller in example 1.

Fig. 6 is a schematic view of the structure of the profiling roller in example 1.

Fig. 7 is a schematic view of the structure of the forming roll in example 1.

Fig. 8 is a schematic structural view of the gap adjusting assembly in embodiment 1.

Fig. 9 is a schematic view of the structure of the roller joining mechanism in embodiment 1.

Fig. 10 is a schematic structural diagram of embodiment 2.

Reference numerals: 1. a dry electrode calendaring molding module; 2. an induction heater; 3. the first infrared thermometer; 4. a cooler; 5. the second infrared thermometer; 6. trimming shears; 7. an areal density detection mechanism; 8. a CCD detection mechanism; 10. breaking through the roller set; 20. repairing roller set; 30. a forming roller set; 40. an electrode membrane; 101. a break-through roller; 102. a fixed bracket; 103. a lifting assembly; 104. a ball head oil cylinder; 105. a connecting frame; 106. a slide block; 107. a linear slide rail; 108. a bearing with a seat; 109. a roller frame; 110. a gap adjustment assembly; 111. a roller receiving mechanism; 1010. a rotary drive motor; 1101. a first ramp; 1102. a second ramp; 1103. a drive assembly; 1104. a speed reducer; 1105. a screw rod; 1106. a drive nut; 1107. a code scale; 1111. a frame; 1112. jacking the oil cylinder; 1113. a moving trolley; 1114. a roller receiving clamp; 201. a repair roller; 301. forming roller

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent. In addition, it should also be understood that the thickness, length, width, etc. dimensions of the various components in the embodiments of the present application and the overall thickness, length, width, etc. dimensions of the integrated device shown in the drawings are merely illustrative and should not be construed as limiting the present application in any way.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The same or similar reference numbers in the drawings of embodiments of the application correspond to the same or similar components; in the description of the present application, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present application and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The "vertical" is not strictly vertical but is within the allowable error range. "parallel" is not strictly parallel but is within the tolerance of the error. In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances. In the description of the embodiments of the present application, the azimuth or positional relationship indicated by the technical terms "thickness", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the embodiments of the present application.

The pole pieces mentioned in the embodiments of the present application are components of a battery cell, and as those skilled in the art will appreciate, the battery cell mainly relies on metal ions to move between the positive pole piece and the negative pole piece. The positive electrode plate comprises a positive electrode current collector and a positive electrode active material layer, wherein the positive electrode active material layer is coated on the surface of the positive electrode current collector, the positive electrode current collector without the positive electrode active material layer protrudes out of the positive electrode current collector coated with the positive electrode active material layer, and the positive electrode current collector without the positive electrode active material layer is used as a positive electrode lug. Taking a lithium ion battery as an example, the material of the positive electrode current collector may be aluminum, and the positive electrode active material may be lithium cobaltate, lithium iron phosphate, ternary lithium, lithium manganate or the like. The negative electrode plate comprises a negative electrode current collector and a negative electrode active material layer, wherein the negative electrode active material layer is coated on the surface of the negative electrode current collector, the negative electrode current collector without the negative electrode active material layer protrudes out of the negative electrode current collector coated with the negative electrode active material layer, and the negative electrode current collector without the negative electrode active material layer is used as a negative electrode tab. The material of the negative electrode current collector may be copper, and the negative electrode active material may be carbon, silicon, or the like. In order to ensure that the high current is passed without fusing, the number of positive electrode lugs is multiple and stacked together, and the number of negative electrode lugs is multiple and stacked together. The material of the separator may be PP (polypropylene) or PE (polyethylene). In addition, the electrode assembly may be a roll-to-roll structure or a lamination structure, and embodiments of the present application are not limited thereto.

The technical solution of the present application will be further specifically described below by means of specific embodiments, and with reference to the accompanying drawings, it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Example 1

As shown in fig. 1 and 2, a dry electrode calendaring module is used for calendaring an electrode film 40, and includes:

a break-through roller set 10 provided with a break-through roller 101 for rolling the electrode film sheet 40;

a plurality of profiling roller units 20 are respectively provided with profiling rollers 201 for calendering the electrode membrane 40;

and a forming roller set 30 provided with a forming roller 301 for calendering the electrode film sheet 40;

referring to fig. 5, 6 and 7, the forming roller 301 is a straight roller, the break-through roller 101 and the repair roller 201 are curved rollers, and the curvature of the break-through roller 101 and the curvature of the repair roller 201 decrease in order along the conveying direction of the electrode membrane 40. In this embodiment, the curved roller means that the outer diameter of the roller is uniformly reduced from the middle to both ends, and when viewed from the axial direction perpendicular to the roller, the rolling surface of the roller forms two arcs symmetrical with respect to the axis, and the curvature means that the greater the curvature, the greater the degree of curvature of the arc; the smaller the curvature, the smaller the degree of bending, and the curvature is 0, and the straight roller. In the forming module in this embodiment, the curvature of the break-through roller 101 is the largest, then the number of the repair roller 201 sets is set to be multiple according to the process requirement, and the curvatures of the repair roller 201 sets are sequentially reduced until the final forming roller 301 has a curvature of 0; thus, the initial film is formed by preliminary compaction and positioning of the electrode blank by the breakthrough roller 101, so that the calendaring center is stable and full, compared with a straight roller, the initial film can be formed by performing multi-pass unfolding and compaction on the initial film by the shaping roller with smaller force, the interior of the electrode can be effectively exhausted in the axial unfolding process, bubbles in the electrode film are prevented from being clamped in the electrode film, the anti-wrinkling effect can be achieved, and the forming roller 301 performs flattening forming on the approximately fully unfolded intermediate film to form a final film; by such a design, the problem of bubbles and surface wrinkles generated in the electrode membrane 40 can be effectively solved.

The number of the repair rollers 201 in the embodiment is 3, referring to fig. 3 and 4, the break-through roller set 10 comprises a fixed bracket 102, 2 break-through rollers 101 which are arranged up and down oppositely, and a lifting assembly 103 for adjusting the roller gap between the 2 break-through rollers 101, wherein the upper break-through rollers 101 and the lower break-through rollers 101 are arranged oppositely and used for calendaring a passing pole piece, and the lifting assembly 103 is arranged at the top of the fixed bracket 102 and connected with the break-through rollers 101 above; the break-through roller 101 is connected with a rotary driving motor 1010 arranged outside the machine set, and a driving assembly 1103 is used for driving the break-through roller 101 to rotate, and provides traction force for the electrode film through a friction pair when the electrode film is rolled by the working roller. The lifting assembly 103 comprises a connecting frame 105, a ball head oil cylinder 104 and a sliding block 106, wherein two ends of the breaking through roller 101 are installed on a roller frame 109 arranged on the fixed support 102 through bearing 108 with a seat, a cylinder seat of the ball head oil cylinder 104 is installed at the top of the fixed support 102, one side of an output end connecting frame 105 of the ball head oil cylinder 104 is connected, the other side of the connecting frame 105 is connected with the roller frame 109, two ends of the connecting frame 105 are respectively connected with the sliding block 106, and the sliding block 106 is in sliding connection with a linear sliding rail 107 arranged on the fixed support 102. The ball cylinder 104 is used for providing lifting power for the upper working roller, and the ball connection is used for matching with the lifting guiding and positioning functions of the linear slide rail 107 to prevent over positioning.

In this embodiment, the installation structures of the break-through roller set 10, the repair roller set 20 and the forming roller set 30 are the same, and the only difference is that the curvatures of the work roller systems are different.

In a more preferred embodiment, referring to fig. 2, 3 and 8, a gap adjusting assembly 110 is further disposed on the fixed support 102 between the slider 106 and the top of the fixed support 102, the gap adjusting assembly 110 includes a first chute 1101 and a second chute 1102, the first chute 1101 and the second chute 1102 are disposed in a manner of being adhered to each other in an inclined plane, and a driving assembly 1103 for driving the first chute 1101 to translate along the axial direction of the breaking roller 101 is connected to one side of the first chute 1101. The driving assembly 1103 provides power for the relative movement of the first oblique iron 1101 at the lower part and the second oblique iron 1102 at the upper part, the inclined surfaces of the first oblique iron 1101 and the second oblique iron 1102 are oppositely placed, the driving assembly 1103 realizes the change of the distance between the two side planes of the first oblique iron 1101 and the second oblique iron 1102 by driving the relative movement between the first oblique iron 1101 and the second oblique iron 1102, thereby achieving the effect of limiting the limit working height of the upper working roll (namely the breakthrough roll 101, the repair roll 201 or the forming roll 301), further achieving the effect of adjusting the working gap between the upper working roll and the lower working roll, and simultaneously enabling the reaction force of the working load of the upper working roll to be stably transmitted to the fixed support 102 by the first oblique iron 1101 and the second oblique iron 1102, and reducing the load of an oil cylinder.

In some embodiments, the driving assembly 1103 comprises a speed reducer 1104, a screw rod 1105 and a driving nut 1106 in threaded connection with the screw rod 1105, wherein the output end of the speed reducer 1104 is in transmission connection with the screw rod 1105, the interior of the first inclined iron 1101 is hollow, the driving nut 1106 is fixedly connected to the outer side wall of one side of the first inclined iron 1101, which is close to the speed reducer 1104, and the screw rod 1105 is simultaneously and movably arranged in the driving nut 1106 and the interior of the first inclined iron 1101 in a penetrating manner; the gap adjustment assembly 110 further includes encoding scales 1107 disposed on opposite sides of the first ramp 1101 for measuring the translational distance of the first ramp 1101. In this way, the speed reducer 1104 drives the screw rod 1105 to rotate, so that the driving nut 1106 moves along the axial direction of the screw rod 1105, and further drives the first ramp 1101 to move together. The encoder scale 1107 is used for precisely measuring the relative positions of the first chute 1101 and the second chute 1102 so as to obtain a precise plane distance, and further precisely controlling the gap between the upper and lower working rolls.

In some embodiments, referring to fig. 2 and 9, the bottom of the breaking-through roller 101 set is further provided with a roller receiving mechanism 111, where the roller receiving mechanism includes a frame 1111, a moving trolley 1113, a jacking cylinder 1112, and a roller receiving clamp 1114 for supporting the breaking-through roller 101, the moving trolley 1113 is movably disposed on top of the frame 1111, the jacking cylinder 1112 is mounted on the frame 1111, and the roller receiving clamp 1114 is disposed on the moving trolley 1113. The moving trolley 1113 can move transversely to convey the working rolls, the roll receiving clamp 1114 is used for supporting the working rolls, the jacking cylinder 1112 is used for driving the moving trolley 1113 to lift, and the frame 1111 is used for supporting the moving trolley 1113, the roll receiving clamp 1114 and the jacking cylinder 1112. When the working rolls need to be replaced, the movable trolley 1113 moves to the position right below the corresponding working rolls, so that the receiving roll clamps 1114 are located at the receiving positions, then the lifting oil cylinders 1112 jack up the movable trolley 1113, after the working rolls are disassembled, the movable trolley 1113 is received on the receiving roll clamps 1114 of the movable trolley 1113, after the movable trolley 1113 is put down by the lifting oil cylinders 1112, the movable trolley 1113 takes away the replaced working rolls, the operation modes of replacing the newly-operated rolls are the same, and the working procedures are opposite, so that repeated description is omitted.

The forming module provided in this embodiment, through the arrangement of the break-through roller 101, the repair roller 201 and the forming roller 301 with gradually reduced curvature, can gradually expand and compact the electrode membrane 40, and the electrode membrane 40 has a phenomenon of central bubbles or surface wrinkles, so that the quality of the electrode is improved; and the production is realized without larger heat and power, thus greatly reducing the manufacturing cost and the equipment operation cost. In addition, this embodiment further improves the design of the structure of the roller pressing mechanism, and adds the lifting assembly 103 and the gap adjusting assembly 110, so that the gap between the upper and lower working rollers can be accurately adjusted, and the reaction force of the working load of the upper working roller can be stably transmitted to the fixing bracket 102.

Example 2

The present embodiment provides a dry electrode calender molding apparatus, referring to fig. 10, including:

a feeding assembly for feeding the electrode membrane 40 to be formed;

the dry electrode calender die set 1 in example 1 is used for calender molding the electrode film 40;

a cooler 4 for cooling the molded electrode;

and the detection device is used for detecting the formed electrode membrane 40.

An induction heater 2 and a first infrared thermometer 3 are arranged between the feeding component and the forming module; a second infrared thermometer 5 is also arranged between the cooler 4 and the detection device; and a trimming shear 6 for trimming redundant rim materials of the electrode diaphragm 40 is also arranged between the second infrared thermometer 5 and the detection device. Thus, the induction heater 2, the first infrared thermometer 3 and the second infrared thermometer 5 are arranged to realize a temperature closed-loop control process; the shearing components of the trimming shears 6 are arranged on two sides of the pole piece conveying line, and are adjusted to a set position according to the requirement of a preset size, so that redundant leftover materials of the electrode membrane 40 are cut off from two sides of the pole piece, and the size of the pole piece meets the requirement. In this embodiment, the detection device includes an area density detection mechanism 7 and a CCD detection mechanism 8, the area density detection mechanism 7 is used for detecting the area density of the pole piece, and the CCD detection mechanism 8 is used for detecting the forming quality of the pole piece.

In this way, in this dry electrode calendering equipment, because the camber of each work roll reduces along the process direction in proper order, the electrode blank is first through breakthrough roller unit 10 preliminary compaction location and is formed initial membrane, then carry out the multichannel through a plurality of group of shaping roller units and expand compaction and form the intermediate film, then form final membrane through shaping roller unit 30 flattening shaping, finally cut the deckle edge through trimming shearing 6 units and form final product membrane, the detection of combining area density and CCD detects and carries out closed-loop control to its thickness, surface quality and each unit, can realize full-automatic, high efficiency, high stability, high quality and low-cost electrode calendering production, unit simple structure is reliable simultaneously, the serialization degree is high, greatly reduced cost, running cost and cost of labor.

Example 3

The present embodiment provides a dry motor calendaring method, based on the dry electrode calendaring apparatus in embodiment 2, comprising the steps of:

s1, feeding an electrode membrane;

s2, sequentially rolling and forming the electrode membrane by a plurality of curved surface type rollers with gradually reduced curvature;

s3, rolling the electrode membrane again through a straight roller;

s4, trimming and detecting the formed electrode membrane;

s5, blanking the formed electrode membrane.

In this way, the curvature of each working roller is sequentially reduced along the process direction, the electrode blank is initially compacted and positioned through the breakthrough roller set 10 to form an initial film, then is subjected to multi-pass unfolding and compaction through the plurality of groups of shaping roller sets to form an intermediate film, and is flattened and molded through the shaping roller set 30 to form a final film, so that the electrode film 40 can be gradually unfolded and compacted, the phenomenon of central bubbles or surface wrinkles of the electrode film 40 occurs, and the quality of the electrode is improved.

It is to be understood that the above examples of the present application are provided by way of illustration only and not by way of limitation of the embodiments of the present application. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are desired to be protected by the following claims.

Claims (13)

1. The dry electrode calendaring molding module is used for calendaring molding of an electrode membrane (40), and is characterized by comprising the following components sequentially arranged along the conveying direction of the electrode membrane (40):

a break-through roller (101) unit (10) provided with a break-through roller (101) for rolling the electrode film sheet (40);

a plurality of trimming roller units (20) which are respectively provided with trimming rollers (201) for calendaring the electrode membrane (40);

and a molding roll unit (30) provided with a molding roll (301) for calendaring the electrode film sheet (40);

the forming roller is a straight roller, the breaking roller (101) and the shaping roller (201) are curved surface type rollers, and the curvature of the breaking roller (101) and the curvature of the shaping roller (201) are sequentially reduced along the conveying direction of the electrode membrane (40).

2. The dry electrode calender module according to claim 1, wherein the number of the profiling rollers (201) is at least 2.

3. The dry electrode calendaring molding module according to claim 1, wherein the break-through roller (101) unit (10) comprises a fixed support (102), 2 break-through rollers (101) arranged opposite to each other up and down, and a lifting assembly (103) for adjusting a nip between the 2 break-through rollers (101), wherein the lifting assembly (103) is mounted on top of the fixed support (102) and connected with the break-through rollers (101) on top.

4. The dry electrode calendaring module according to claim 3, characterized in that the lifting assembly (103) comprises a connecting frame (105), a ball head oil cylinder (104) and a sliding block (106), two ends of the breaking roller (101) are installed on a roller frame (109) arranged on the fixed support (102) through bearings (108) with seats, a cylinder seat of the ball head oil cylinder (104) is installed on the top of the fixed support (102), an output end of the ball head oil cylinder (104) is connected with one side of the connecting frame (105), the other side of the connecting frame (105) is connected with the roller frame (109), two ends of the connecting frame (105) are respectively connected with the sliding block (106), and the sliding block (106) is in sliding connection with a linear sliding rail (107) arranged on the fixed support (102).

5. A dry electrode calendaring module according to claim 3, characterized in that a gap adjusting component (110) is further arranged between the sliding block (106) and the top of the fixed support (102) on the fixed support (102), the gap adjusting component (110) comprises a first oblique iron (1101) and a second oblique iron (1102), the first oblique iron (1101) and the second oblique iron (1102) are arranged in a manner of being in an oblique surface fit, and a driving component (1103) for driving the first oblique iron (1101) to translate along the axial direction of the breaking roller (101) is connected to one side of the first oblique iron (1101).

6. The dry electrode calendaring molding module according to claim 5, wherein the driving assembly (1103) comprises a speed reducer (1104), a screw rod (1105) and a driving nut (1106) in threaded connection with the screw rod (1105), an output end of the speed reducer (1104) is in transmission connection with the screw rod (1105), the first ramp (1101) is hollow, the driving nut (1106) is fixedly connected to an outer side wall of the first ramp (1101) close to one side of the speed reducer (1104), the screw rod (1105) is movably arranged in the driving nut (1106) and the first ramp (1101) in a penetrating mode, and the gap adjusting assembly (110) further comprises a coding ruler (1107) arranged on two opposite sides of the first ramp (1101) and used for measuring a translation distance of the first ramp (1101).

7. The dry electrode calendaring module according to any of claims 1 to 6, characterized in that a roller receiving mechanism (111) is further arranged at the bottom of the break-through roller (101) set, the roller receiving mechanism comprises a frame (1111), a moving trolley (1113), a jacking cylinder (1112) and a roller receiving clamp (1114) for supporting the break-through roller (101), the moving trolley (1113) is movably arranged at the top of the frame (1111), the jacking cylinder (1112) is mounted on the frame (1111), and the roller receiving clamp (1114) is arranged on the moving trolley (1113).

8. The dry electrode calendaring molding equipment is characterized by comprising the following steps of:

the feeding assembly is used for conveying the electrode membrane (40) to be formed into a material;

the dry electrode calender module (1) of any one of claims 1 to 7, for calender forming an electrode membrane (40);

a cooler (4) for cooling the molded electrode;

and the detection device is used for detecting the formed electrode membrane (40).

9. The dry electrode calendaring molding apparatus according to claim 8, wherein an induction heater (2) and a first infrared thermometer (3) are further arranged between the feeding assembly and the molding module.

10. The dry electrode calendaring apparatus according to claim 8, characterized in that a second infrared thermometer (5) is also arranged between the cooler (4) and the detecting means.

11. The dry electrode calendaring molding apparatus according to claim 10, wherein a trimming shear (6) for trimming off excessive rim material of the electrode membrane (40) is further provided between the second infrared thermometer (5) and the detecting device.

12. Dry electrode calender forming equipment according to claim 10, characterised in that the detection means comprise an areal density detection mechanism (7) and a CCD detection mechanism (8).

13. A dry motor calender molding method based on the dry electrode calender molding apparatus according to claims 8 to 12, characterized by comprising the steps of:

s1, feeding an electrode membrane;

s2, sequentially rolling and forming the electrode membrane by a plurality of curved surface type rollers with gradually reduced curvatures;

s3, rolling the electrode membrane again through a straight roller;

s4, trimming and detecting the formed electrode membrane;

s5, blanking the formed electrode membrane.