Dry-method pole piece preparation all-in-one machine

Abstract

The utility model discloses a dry-method pole piece preparation all-in-one machine which comprises an unwinding mechanism, a first film-forming thinning composite mechanism, a second film-forming thinning composite mechanism, a calendaring mechanism and a winding mechanism which are sequentially arranged, the first film-forming and thinning composite mechanism is used for rolling electrode powder into a first dry-method film and carrying out first-time thinning treatment on the first dry-method film; the first dry-method diaphragm is thinned for the first time, and the second dry-method diaphragm is thinned for the second time; the first dry-method diaphragm subjected to the second thinning is compounded on the A surface of the current collector; and the calendering mechanism is used for rolling the current collector, the first dry-method diaphragm compounded on the A surface of the current collector and the second dry-method diaphragm compounded on the B surface of the current collector so as to compact the first dry-method diaphragm compounded on the A surface of the current collector and the second dry-method diaphragm compounded on the B surface of the current collector, so that the dry-method pole piece is obtained. According to the utility model, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, and particularly relates to a dry electrode sheet preparation integrated machine. Background Art

[0002] At present, for the preparation of dry electrode sheets, generally, first, a dry film forming device is used to separately form a first dry film and a second dry film from electrode powder materials. Then, the first dry film and the second dry film are transported to a dry film thinning device manually. Then, the first dry film is subjected to a first thinning treatment and a second thinning treatment, and the second dry film is also subjected to a first thinning treatment and a second thinning treatment by the dry film thinning device. Then, the first dry film and the second dry film after the second thinning treatment are transported to a composite device manually. Then, the first dry film after the second thinning treatment and the second dry film after the second thinning treatment are respectively compounded on the A side and the B side of the current collector by the composite device, thus completing the preparation of the dry electrode sheet. In this preparation method, since each process is completed by independent devices respectively, and transfer operations are required between each process, a large amount of production time is consumed, the production efficiency is reduced, and the production cost is increased. Content of the Utility Model

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a dry electrode sheet preparation integrated machine, which improves the production efficiency and reduces the production cost.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A dry electrode sheet preparation integrated machine includes a unwind mechanism, a first film forming and thickness reducing composite mechanism, a second film forming and thickness reducing composite mechanism, a calendering mechanism and a winding mechanism arranged in sequence. The unwind mechanism is used for unwinding the current collector. The first film forming and thickness reducing composite mechanism is used for roll-pressing the electrode powder into a first dry film sheet, for performing a first thickness reduction treatment on the first dry film sheet, for performing a second thickness reduction treatment on the first dry film sheet after the first thickness reduction treatment, and for laminating the first dry film sheet after the second thickness reduction treatment on the A side of the current collector. The second film forming and thickness reducing composite mechanism is used for roll-pressing the electrode powder into a second dry film sheet, for performing a first thickness reduction treatment on the second dry film sheet, for performing a second thickness reduction treatment on the second dry film sheet after the first thickness reduction treatment, and for laminating the second dry film sheet after the second thickness reduction treatment on the B side of the current collector. The calendering mechanism is used for calendering the current collector, the first dry film sheet laminated on the A side of the current collector and the second dry film sheet laminated on the B side of the current collector to compact the first dry film sheet laminated on the A side of the current collector and the second dry film sheet laminated on the B side of the current collector, so as to obtain a dry electrode sheet. The winding mechanism is used for winding the dry electrode sheet.

[0006] The beneficial effects of the present utility model are as follows: By arranging the unwind mechanism, the first film forming and thickness reducing composite mechanism, the second film forming and thickness reducing composite mechanism, the calendering mechanism and the winding mechanism in sequence, compared with the prior art, the preparation of the dry electrode sheet can be completed by one device, continuous operation can be carried out, no transfer operation is required, a large amount of production time is not consumed, the production efficiency is improved, and the production cost is reduced. Description of the Drawings

[0007] The present utility model will be further described below with reference to the drawings and embodiments.

[0008] Figure 1 is a schematic structural diagram of a dry electrode sheet preparation integrated machine provided by an embodiment of the present utility model;

[0009] Figure 2 is Figure 1 a cross-sectional schematic diagram of the dry electrode sheet preparation integrated machine shown;

[0010] Figure 3 is Figure 1 a cross-sectional schematic diagram of the unwind mechanism, the first swing roller mechanism and the first tension detection roller of the dry electrode sheet preparation integrated machine shown;

[0011] Figure 4 is Figure 1 a schematic structural diagram of the first feeding mechanism, the first film forming and thickness reducing composite mechanism and the first running deviation correction mechanism of the dry electrode sheet preparation integrated machine shown;

[0012] Figure 5 is Figure 4Schematic diagram of the structure of the first feeding mechanism, the first film-forming and thinning composite mechanism (the film-forming machine frame without the machine frame door), and the first traveling deviation correction mechanism shown;

[0013] Figure 6 is Figure 4 Cross-sectional schematic diagram of the first film-forming and thinning composite mechanism and the first traveling deviation correction mechanism shown;

[0014] Figure 7 is Figure 4 Schematic diagram of the structure of the first traveling deviation correction mechanism and the first film-forming and thinning composite mechanism after removing the film-forming machine frame, the film-forming machine case, the film-forming frame, the first roll driving part, the second roll driving part, the third roll driving part, the fourth roll driving part, and the fifth roll driving part shown;

[0015] Figure 8 is Figure 4 Schematic diagram of the structure of the film-forming frame, the first roll, the second roll, the third roll, the fourth roll, the fifth roll, the adjustment driving assembly, the first gap adjustment assembly, the second gap adjustment assembly, the third gap adjustment assembly, and the fourth gap adjustment assembly of the first film-forming and thinning composite mechanism shown;

[0016] Figure 9 is Figure 4 Schematic diagram of the structure of the first traveling deviation correction mechanism shown;

[0017] Figure 10 is Figure 1 Cross-sectional schematic diagram of the second swing roll mechanism, the tension isolation mechanism, the second tension detection roll, and the third swing roll mechanism of the dry-type pole piece preparation integrated machine shown;

[0018] Figure 11 is Figure 10 Schematic diagram of the structure of the tension isolation mechanism shown;

[0019] Figure 12 is Figure 1 Schematic diagram of the structure of the second feeding mechanism, the second film-forming and thinning composite mechanism, and the second traveling deviation correction mechanism of the dry-type pole piece preparation integrated machine shown;

[0020] Figure 13 is Figure 12 Cross-sectional schematic diagram of the second feeding mechanism, the second film-forming and thinning composite mechanism, and the second traveling deviation correction mechanism shown;

[0021] Figure 14 is Figure 1 Cross-sectional schematic diagram of the fourth swing roll mechanism of the dry-type pole piece preparation integrated machine shown;

[0022] Figure 15 is Figure 1 Schematic diagram of the structure of the first angle of the rolling mechanism of the dry-type pole piece preparation integrated machine shown;

[0023] Figure 16 is Figure 15 A structural schematic diagram of the second angle of the calendering mechanism shown;

[0024] Figure 17 is Figure 15 A cross-sectional schematic diagram of the calendering mechanism shown;

[0025] Figure 18 is is Figure 1 A cross-sectional schematic diagram of the third tension detection roller, the fifth swing roller mechanism and the winding mechanism of the dry-type electrode sheet preparation all-in-one machine shown. Detailed implementation manners

[0026] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the creation of the present utility model can be interactively combined without conflicting with each other.

[0027] Please refer to Figure 1 and Figure 2, a dry electrode sheet preparation all-in-one machine provided by an embodiment of the present utility model includes an unwinding mechanism 10, a first swing roller mechanism 20, a first tension detection roller 30, a first feeding mechanism 40, a first film forming and thinning composite mechanism 50, a first traveling deviation rectifying mechanism 60, a first thickness gauge, a second swing roller mechanism 70, a tension isolation mechanism 80, a second tension detection roller 90, a third swing roller mechanism 100, a second traveling deviation rectifying mechanism 110, a second feeding mechanism 120, a second film forming and thinning composite mechanism 130, a second thickness gauge, a fourth swing roller mechanism 140, a calendering mechanism 150, a third tension detection roller 160, a fifth swing roller mechanism 170, a winding mechanism 180 and an unwinding deviation rectifying mechanism 190. The unwinding mechanism 10, the first swing roller mechanism 20, the first tension detection roller 30, the first film forming and thinning composite mechanism 50, the first thickness gauge, the second swing roller mechanism 70, the tension isolation mechanism 80, the second tension detection roller 90, the third swing roller mechanism 100, the second film forming and thinning composite mechanism 130, the second thickness gauge, the fourth swing roller mechanism 140, the calendering mechanism 150, the third tension detection roller 160, the fifth swing roller mechanism 170 and the winding mechanism 180 are arranged in sequence from left to right along the traveling path of the current collector 1. The first feeding mechanism 40 is arranged at the top of the first film forming and thinning composite mechanism 50, the second feeding mechanism 120 is arranged at the top of the second film forming and thinning composite mechanism 130, the first traveling deviation rectifying mechanism 60 is arranged inside the first film forming and thinning composite mechanism 50, and the second traveling deviation rectifying mechanism 110 is arranged inside the second film forming and thinning composite mechanism 130.

[0028] Combined with Figure 3 As shown, the unwinding mechanism 10 is used for unwinding the current collector 1. The unwinding mechanism 10 includes an unwinding machine frame 11, an unwinding air shaft 12 and an unwinding motor. The unwinding air shaft 12 is located inside the unwinding machine frame 11. The two ends of the unwinding air shaft 12 are respectively rotatably arranged on the inner walls on both sides of the unwinding machine frame 11 through two unwinding bearing seats. An unwinding through hole is provided on one inner wall of the unwinding machine frame 11, and an unwinding machine box 111 is provided on one outer wall of the unwinding machine frame 11. The unwinding motor is arranged inside the unwinding machine box 111. One end of the unwinding air shaft 12 passes through the unwinding through hole of the unwinding machine frame 11 and is located inside the unwinding machine box 111, and is connected to the end of the output shaft of the unwinding motor. The unwinding motor is used to drive the unwinding air shaft 12 to rotate. In actual application, after the current collector 1 is installed on the unwinding air shaft 12, the unwinding motor is used to drive the unwinding air shaft 12 to rotate, so that the current collector 1 can be unwound through the unwinding air shaft 12.

[0029] The unwind deviation rectifying mechanism 190 includes a deviation rectifying electric cylinder 1902 and a deviation rectifying sensor (not shown in the figure). The unwind rack 11 is slidably arranged at the top end of the substrate 1901. Specifically, deviation rectifying slide rails are provided at the top end of the substrate 1901, and the length direction of the deviation rectifying slide rails is the same as the width direction of the unwind rack 11. Deviation rectifying sliders are provided at the bottom end of the unwind rack 11, and the deviation rectifying sliders are slidably engaged with the deviation rectifying slide rails. The number of the deviation rectifying sliders and the deviation rectifying slide rails can be set according to actual situations. The deviation rectifying electric cylinder 1902 is arranged at the top end of the substrate 1901, and the end of the output shaft of the deviation rectifying electric cylinder 1902 is connected to the bottom end of the unwind rack 11. The deviation rectifying electric cylinder 1902 is used to drive the unwind rack 11 to move forward and backward, so as to drive the unwind air shaft 12, the unwind motor and the unwind chassis 111 to move forward and backward. The deviation rectifying sensor is arranged on the inner wall of one side of the unwind rack 11, and the deviation rectifying sensor is used to detect whether one side edge of the current collector 1 is deviated. The deviation rectifying sensor is a horseshoe-shaped ultrasonic sensor. In actual application, one side edge of the current collector 1 passes through the deviation rectifying sensor, and whether one side edge of the current collector 1 is deviated can be detected through the deviation rectifying sensor. When it is detected that one side edge of the current collector 1, for example, moves forward, it indicates that the current collector 1 moves forward. At this time, the deviation rectifying electric cylinder 1902 is used to drive the unwind rack 11 to move backward, so as to drive the unwind air shaft 12, the unwind motor and the unwind chassis 111 to move backward, so as to realize deviation rectification of the current collector 1.

[0030] The first swing roller mechanism 20 is used to adjust the tension of the current collector 1. The first swing roller mechanism 20 includes a rotating shaft 22, a swing roller 23, two swing roller swing arms 24, and two swing roller cylinders 25. The rotating shaft 22 is located within the first mounting frame 21. The first mounting frame 21 is provided at the top of the substrate 1901. The top of the first mounting frame 21 is open. Two first frame holes are respectively provided on the inner walls of both sides of the first mounting frame 21. The two ends of the rotating shaft 22 are respectively rotatably arranged within the two first frame holes of the first mounting frame 21 through rotating shaft bearings, etc. The swing roller 23 is located below the rotating shaft 22. The two swing roller swing arms 24 are arranged at intervals along the axis of the rotating shaft 22 and are relatively arranged front and back. One end of the swing roller swing arm 24 is provided with a first swing arm through hole. One ends of the two swing roller swing arms 24 are respectively fixedly sleeved on the outer periphery of the rotating shaft 22 through their first swing arm through holes. The swing roller 23 is located between the two swing roller swing arms 24, and the two ends of the swing roller 23 are respectively rotatably arranged at the other ends of the two swing roller swing arms 24. Specifically, the other ends of the swing roller swing arms 24 are provided with second swing arm through holes, and the two ends of the swing roller 23 are respectively rotatably arranged within the second swing arm through holes at the other ends of the two swing roller swing arms 24 through, for example, swing roller bearings, etc. The two swing roller cylinders 25 are respectively arranged on the inner walls of both sides of the first mounting frame 21 and are respectively located to the right of the two swing roller swing arms 24. The ends of the output shafts of the two swing roller cylinders 25 are respectively connected to the closer sides of the two swing roller swing arms 24. The two swing roller cylinders 25 are respectively used to drive the two swing roller swing arms 24 to swing left and right around the axis of the rotating shaft 22, so as to drive the swing roller 23 to swing left and right and the rotating shaft 22 to rotate.

[0031] The first tension detection roller 30 is used to detect the tension of the current collector 1. The first tension detection roller 30 is located within the first mounting frame 21. The two ends of the first tension detection roller 30 are respectively rotatably arranged on the inner walls of both sides of the first mounting frame 21 through two tension roller bearing seats 31. In actual application, the current collector 1 unrolled by the unrolling mechanism 10 first bypasses from the left side of the swing roller 23 of the first swing roller mechanism 20, and then bypasses from the left side and the upper side of the first tension detection roller 30. The first tension detection roller 30 can detect the tension of the current collector 1. The two swing roller cylinders 25 of the first swing roller mechanism 20 can drive the swing roller 23 to swing left and right according to the tension of the current collector 1 detected by the first tension detection roller 30, so as to adjust the tension of the current collector 1. In this way, a closed-loop control of the tension of the current collector 1 can be achieved to prevent the current collector 1 from being too tight or too loose, which is convenient for the first film forming and thinning composite mechanism 50 to composite the first dry film after the second thinning treatment on the A side of the current collector 1.

[0032] Combined Figures 4 to 9 As shown, the first feeding mechanism 40 is used to convey the electrode powder to the first film forming and thinning composite mechanism 50. The first feeding mechanism 40 is an existing vibrating feeder.

[0033] The first film-forming and thickness-reducing composite mechanism 50 is used to roll the electrode powder into a first dry film, to perform a first thickness-reducing treatment on the first dry film, to perform a second thickness-reducing treatment on the first dry film that has undergone the first thickness-reducing treatment, and to composite the first dry film that has undergone the second thickness-reducing treatment on the A side of the current collector 1. The A side of the current collector 1 is, for example, the front side of the current collector 1.

[0034] The first film-forming and thickness-reducing composite mechanism 50 includes a film-forming frame 51, a roll assembly, an adjustment drive assembly, a first gap adjustment assembly, a second gap adjustment assembly, a third gap adjustment assembly, and a fourth gap adjustment assembly.

[0035] The first mounting frame 21 is located between the film-forming frame 51 and the unwinding frame 11.

[0036] The roll assembly includes a first roll 52, a second roll 53, a third roll 54, a fourth roll 55, a fifth roll 56, a first roll drive, a second roll drive, a third roll drive, a fourth roll drive, and a fifth roll drive.

[0037] The first rolling roll 52, the second rolling roll 53, the third rolling roll 54, the fourth rolling roll 55 and the fifth rolling roll 56 are arranged side by side horizontally from left to right. There is a film-forming gap between the roll surfaces of the first rolling roll 52 and the second rolling roll 53, a first thinning gap between the roll surfaces of the second rolling roll 53 and the third rolling roll 54, a second thinning gap between the roll surfaces of the third rolling roll 54 and the fourth rolling roll 55, and a composite gap between the roll surfaces of the fourth rolling roll 55 and the fifth rolling roll 56. A film-forming frame 511 is provided at the top of the film-forming rack 51. The first rolling roll 52, the second rolling roll 53, the third rolling roll 54, the fourth rolling roll 55 and the fifth rolling roll 56 are all located within the film-forming frame 511. Two installation through grooves are respectively provided on the inner walls of both sides of the film-forming frame 511, and the length direction of the installation through grooves is the same as the length direction of the film-forming frame 511. Both ends of the first rolling roll 52 are respectively rotatably arranged on two first rolling roll bearing seats 521, both ends of the second rolling roll 53 are respectively rotatably arranged on two second rolling roll bearing seats 531, both ends of the third rolling roll 54 are respectively rotatably arranged on two third rolling roll bearing seats 541, both ends of the fourth rolling roll 55 are respectively rotatably arranged on two fourth rolling roll bearing seats 551, and both ends of the fifth rolling roll 56 are respectively rotatably arranged on two fifth rolling roll bearing seats 561. The two first rolling roll bearing seats 521, the two second rolling roll bearing seats 531, the two third rolling roll bearing seats 541, the two fourth rolling roll bearing seats 551, and the two fifth rolling roll bearing seats 561 are respectively arranged at the bottoms of the two installation through grooves. The two first rolling roll bearing seats 521 correspond to the two second rolling roll bearing seats 531 respectively, and there are two first gaps between the two first rolling roll bearing seats 521 and the two second rolling roll bearing seats 531 respectively. The two second rolling roll bearing seats 531 correspond to the two third rolling roll bearing seats 541 respectively, and there are two second gaps between the two second rolling roll bearing seats 531 and the two third rolling roll bearing seats 541 respectively. The two third rolling roll bearing seats 541 correspond to the two fourth rolling roll bearing seats 551 respectively, and there are two third gaps between the two third rolling roll bearing seats 541 and the two fourth rolling roll bearing seats 551 respectively. The two fourth rolling roll bearing seats 551 correspond to the two fifth rolling roll bearing seats 561 respectively, and there are two fourth gaps between the two fourth rolling roll bearing seats 551 and the two fifth rolling roll bearing seats 561 respectively. The two first rolling roll bearing seats 521 provided provide rotational support for the first rolling roll 52, the two second rolling roll bearing seats 531 provided provide rotational support for the second rolling roll 53, the two third rolling roll bearing seats 541 provided provide rotational support for the third rolling roll 54, the two fourth rolling roll bearing seats 551 provided provide rotational support for the fourth rolling roll 55, and the two fifth rolling roll bearing seats 561 provided provide rotational support for the fifth rolling roll 56.On the outer wall of one side of the film forming frame 51, there is a film forming machine box 512. The top end of the film forming machine box 512 is flush with the top end of the film forming frame 511. The first roller bearing seat 521 at one end of the first roller 52, the second roller bearing seat 531 at one end of the second roller 53, the third roller bearing seat 541 at one end of the third roller 54, the fourth roller bearing seat 551 at one end of the fourth roller 55, and the fifth roller bearing seat 561 at one end of the fifth roller 56 are respectively opposite to the film forming machine box 512. The first feeding mechanism 40 is arranged at the top end of the film forming machine box 512. The discharge port (not shown in the figure) of the first feeding mechanism 40 is located above the film forming gap and corresponds to the film forming gap. The feeding port of the first feeding mechanism 40 faces upward. On the outer wall of the side of the film forming frame 511 away from the film forming machine box 512, there is a film forming protection box 5111. The film forming protection box 5111 shields the first roller bearing seat 521 at the other end of the first roller 52, the second roller bearing seat 531 at the other end of the second roller 53, the third roller bearing seat 541 at the other end of the third roller 54, the fourth roller bearing seat 551 at the other end of the fourth roller 55, and the fifth roller bearing seat 561 at the other end of the fifth roller 56 to play a protective role.

[0038] The first roller driving part is used to drive the first roller 52 to rotate, the second roller driving part is used to drive the second roller 53 to rotate, the third roller driving part is used to drive the third roller 54 to rotate, the fourth roller driving part is used to drive the fourth roller 55 to rotate, and the fifth roller driving part is used to drive the fifth roller 56 to rotate. In actual application, the rotation directions of the first roller 52 and the second roller 53 are opposite, the rotation directions of the second roller 53 and the third roller 54 are opposite, the rotation directions of the third roller 54 and the fourth roller 55 are opposite, and the rotation directions of the fourth roller 55 and the fifth roller 56 are opposite. In this embodiment, the first roller driving part, the second roller driving part, the third roller driving part, the fourth roller driving part, and the fifth roller driving part all include a roller motor 571 and a roller speed reducer. The roller speed reducer is arranged in the film forming machine box 512, and the roller motor 571 is arranged on the roller speed reducer. The end of the output shaft of the roller motor 571 is connected to the end of the input shaft of the roller speed reducer. The end of the output shaft of the roller speed reducer of the first roller driving part is connected to one end of the first roller 52, the end of the output shaft of the roller speed reducer of the second roller driving part is connected to one end of the second roller 53, the end of the output shaft of the roller speed reducer of the third roller driving part is connected to one end of the third roller 54, the end of the output shaft of the roller speed reducer of the fourth roller driving part is connected to one end of the fourth roller 55, and the end of the output shaft of the roller speed reducer of the fifth roller driving part is connected to one end of the fifth roller 56. The roller motor 571 is used to drive the corresponding roller to rotate through the roller speed reducer.

[0039] In this embodiment, the fifth roll bearing block 561 is fixedly arranged on the bottom of the corresponding installation through groove, and the first roll bearing block 521, the second roll bearing block 531, the third roll bearing block 541, and the fourth roll bearing block 551 are respectively slidably arranged on the bottom of the corresponding installation through groove. Specifically: a first slider is provided at the bottom end of the first roll bearing block 521, and the first slider is slidably matched with a first slide rail. The length direction of the first slide rail is the same as the length direction of the film forming frame 511, and the first slide rail is arranged on the bottom of the corresponding installation through groove. A second slider is provided at the bottom end of the second roll bearing block 531, and the second slider is slidably matched with a second slide rail. The length direction of the second slide rail is the same as the length direction of the film forming frame 511, and the second slide rail is arranged on the bottom of the corresponding installation through groove. A third slider is provided at the bottom end of the third roll bearing block 541, and the third slider is slidably matched with a third slide rail. The length direction of the third slide rail is the same as the length direction of the film forming frame 511, and the third slide rail is arranged on the bottom of the corresponding installation through groove. A fourth slider is provided at the bottom end of the fourth roll bearing block 551, and the fourth slider is slidably matched with a fourth slide rail. The length direction of the fourth slide rail is the same as the length direction of the film forming frame 511, and the fourth slide rail is arranged on the bottom of the corresponding installation through groove. The number of the first slider, the second slider, the third slider, and the fourth slider can be set according to the actual situation.

[0040] The first gap adjusting assembly and the adjusting driving assembly are used to adjust the width of the film forming gap. The second gap adjusting assembly and the adjusting driving assembly are used to adjust the width of the first thinning gap. The third gap adjusting assembly and the adjusting driving assembly are used to adjust the width of the second thinning gap. The fourth gap adjusting assembly and the adjusting driving assembly are used to adjust the width of the composite gap. By adjusting the width of the film forming gap, the thickness of the first dry film can be adjusted, so as to adapt to the production of the first dry film with different thicknesses and different materials. By adjusting the width of the first thinning gap, the thickness of the first thinning of the first dry film can be adjusted. By adjusting the width of the second thinning gap, the thickness of the second thinning of the first dry film can be adjusted. By adjusting the width of the composite gap, the first dry films with different thicknesses can be laminated on the A side of the current collector 1, and the application range is wide.

[0041] The first roll bearing block 521, the second roll bearing block 531, the third roll bearing block 541, the fourth roll bearing block 551, and the fifth roll bearing block 561 respectively have opposite first ends and second ends.

[0042] Specifically, the adjusting drive assembly includes two supercharging hydraulic cylinders 581 arranged opposite to each other in the front and rear. The two supercharging hydraulic cylinders 581 are respectively located on the left side of the two first roll bearing seats 521 and are respectively arranged on the inner walls of one ends of the two installation through grooves. The ends of the output shafts of the two supercharging hydraulic cylinders 581 are respectively connected to one ends of two pressure sensors 5811, and the other ends of the two pressure sensors 5811 are connected to the first ends of the first roll bearing seats 521. The two supercharging hydraulic cylinders 581 are respectively used to drive the two first roll bearing seats 521 to move left and right, that is, to move in the direction of approaching or departing from the corresponding second roll bearing seat 531, so as to drive the first roll 52 to move left and right, that is, to move in the direction of approaching or departing from the second roll 53. The pressure sensor 5811 can detect the pressure exerted by the corresponding supercharging hydraulic cylinder 581 on the corresponding first roll bearing seat 521.

[0043] The second end of the first roll bearing seat 521 is provided with a first inclined surface, the second end of the second roll bearing seat 531 is provided with a second inclined surface, the second end of the third roll bearing seat 541 is provided with a third inclined surface, and the second end of the fourth roll bearing seat 551 is provided with a fourth inclined surface. In this embodiment, the first inclined surface, the second inclined surface, the third inclined surface, and the fourth inclined surface all incline downward, that is, the length of the top end of the first roll bearing seat is greater than the length of the bottom end of the first roll bearing seat 521, the length of the top end of the second roll bearing seat 531 is greater than the length of the bottom end of the second roll bearing seat 531, the length of the top end of the third roll bearing seat 541 is greater than the length of the bottom end of the third roll bearing seat 541, the length of the top end of the fourth roll bearing seat 551 is greater than the length of the bottom end of the fourth roll bearing seat 551, and the inclination angles of the first inclined surface, the second inclined surface, the third inclined surface, and the fourth inclined surface are the same.

[0044] The first gap adjusting assembly includes two first gap adjusting modules arranged opposite to each other in the front and rear, and the two first gap adjusting modules respectively correspond to the two first gaps. The second gap adjusting assembly includes two second gap adjusting modules arranged opposite to each other in the front and rear, and the two second gap adjusting modules respectively correspond to the two second gaps. The third gap adjusting assembly includes two third gap adjusting modules arranged opposite to each other in the front and rear, and the two third gap adjusting modules respectively correspond to the two third gaps. The fourth gap adjusting assembly includes two fourth gap adjusting modules arranged opposite to each other in the front and rear, and the two fourth gap adjusting modules respectively correspond to the two fourth gaps.

[0045] The first gap adjustment module, the second gap adjustment module, the third gap adjustment module, and the fourth gap adjustment module all include an adjustment motor 582, an adjustment speed reducer 583, a lead screw 584, and a wedge block 585. The adjustment motor 582 and the adjustment speed reducer 583 are both located inside the film forming frame 51. The adjustment speed reducer 583 is slidably arranged at the bottom end of the film forming frame 511. The adjustment motor 582 is arranged on the adjustment speed reducer 583. The end of the output shaft of the adjustment motor 582 is connected to the end of the input shaft of the adjustment speed reducer 583. One end of the lead screw 584 is connected to the end of the output shaft of the adjustment speed reducer 583. The other end of the lead screw 584 of the first gap adjustment module passes through the first slot of the film forming frame 511 and is located in the corresponding first gap, and the lead screw 584 can move left and right between the two ends of the first slot. The other end of the lead screw 584 of the second gap adjustment module passes through the second slot of the film forming frame 511 and is located in the corresponding second gap, and the lead screw 584 can move left and right between the two ends of the second slot. The other end of the lead screw 584 of the third gap adjustment module passes through the third slot of the film forming frame 511 and is located in the corresponding third gap, and the lead screw 584 can move left and right between the two ends of the third slot. The other end of the lead screw 584 of the fourth gap adjustment module passes through the fourth slot of the film forming frame 511 and is located in the corresponding fourth gap, and the lead screw 584 can move left and right between the two ends of the fourth slot. The length directions of the first slot, the second slot, the third slot, and the fourth slot are all the same as the length direction of the film forming frame 511. The wedge block 585 is in threaded cooperation with the lead screw 584. The wedge block 585 has opposite first and second ends. The first end of the wedge block 585 has a wedge block inclined surface. The wedge block 585 of the first gap adjustment module is located in the corresponding first gap, and the wedge block inclined surface and the second end of the wedge block 585 are respectively in cooperation with the first inclined surface of the corresponding first roll bearing seat 521 and slidably connected to the first end of the corresponding second roll bearing seat 531. The wedge block 585 of the second gap adjustment module is located in the corresponding second gap, and the wedge block inclined surface and the second end of the wedge block 585 are respectively in cooperation with the second inclined surface of the corresponding second roll bearing seat 531 and slidably connected to the first end of the corresponding third roll bearing seat 541. The wedge block 585 of the third gap adjustment module is located in the corresponding third gap, and the wedge block inclined surface and the second end of the wedge block 585 are respectively in cooperation with the third inclined surface of the corresponding third roll bearing seat 541 and slidably connected to the first end of the corresponding fourth roll bearing seat 551. The wedge block 585 of the fourth gap adjustment module is located in the corresponding fourth gap, and the wedge block inclined surface and the second end of the wedge block 585 are respectively in cooperation with the fourth inclined surface of the corresponding fourth roll bearing seat 551 and slidably connected to the first end of the corresponding fifth roll bearing seat 561. The adjustment motor 582 is used to drive the lead screw 584 to rotate through the adjustment speed reducer 583, so as to drive the wedge block 585 to move up and down.

[0046] In this embodiment, a first guide rail 5311 is provided at the first end of the second roll bearing block 531. The length direction of the first guide rail 5311 is the same as the height direction of the second roll bearing block 531. A second guide rail 5411 is provided at the first end of the third roll bearing block 541. The length direction of the second guide rail 5411 is the same as the height direction of the third roll bearing block 541. A third guide rail 5511 is provided at the first end of the fourth roll bearing block 551. The length direction of the third guide rail 5511 is the same as the height direction of the fourth roll bearing block 551. A fourth guide rail 5611 is provided at the first end of the fifth roll bearing block 561. The length direction of the fourth guide rail 5611 is the same as the height direction of the fifth roll bearing block 561. A wedge-shaped block chute is provided at the second end of the wedge-shaped block 585. The wedge-shaped block chute at the second end of the wedge-shaped block 585 of the first gap adjustment module is slidably engaged with the first guide rail 5311 at the first end of the corresponding second roll bearing block 531. The wedge-shaped block chute at the second end of the wedge-shaped block 585 of the second gap adjustment module is slidably engaged with the second guide rail 5411 at the first end of the corresponding third roll bearing block 541. The wedge-shaped block chute at the second end of the wedge-shaped block 585 of the third gap adjustment module is slidably engaged with the third guide rail 5511 at the first end of the corresponding fourth roll bearing block 551. The wedge-shaped block chute at the second end of the wedge-shaped block 585 of the fourth gap adjustment module is slidably engaged with the fourth guide rail 5611 at the first end of the corresponding fifth roll bearing block 561.

[0047] In this embodiment, the adjustment speed reducer 583 is arranged on the speed reducer seat 5831. The speed reducer seat 5831 is arranged at the bottom end of the adjustment slider 5832. The adjustment sliders 5832 of the first gap adjustment module, the second gap adjustment module, the third gap adjustment module, and the fourth gap adjustment module are all slidably engaged with the adjustment chute 5112 at the bottom end of the film forming frame 511. The length direction of the adjustment chute 5112 is the same as the length direction of the film forming frame 511. The adjustment slider 5832 can slide left and right along the adjustment chute 5112. It can be understood that in other embodiments, the adjustment chute 5122 can also be replaced by a slide rail. The bottom of the adjustment chute 5112 is provided with the above-mentioned first strip hole, second strip hole, third strip hole, and fourth strip hole. One end of the lead screw 584 passes through the through hole of the adjustment slider 5832 and is connected to the end of the output shaft of the adjustment speed reducer 583.

[0048] The working principle of the first film-forming and thinning composite mechanism 50 is as follows: First, the first roller driving member drives the first roller 52 to rotate, the second roller driving member drives the second roller 53 to rotate, the third roller driving member drives the third roller 54 to rotate, the fourth roller driving member drives the fourth roller 55 to rotate, and the fifth roller driving member drives the fifth roller 56 to rotate. The rotation directions of the first roller 52 and the second roller 53 are opposite, the rotation directions of the second roller 53 and the third roller 54 are opposite, the rotation directions of the third roller 54 and the fourth roller 55 are opposite, and the rotation directions of the fourth roller 55 and the fifth roller 56 are opposite. After the electrode powder enters from the feed port of the first feeding mechanism 40, the first feeding mechanism 40 can convey the electrode powder in the direction close to the discharge port of the first feeding mechanism 40. After the electrode powder comes out from the discharge port, the electrode powder can enter the film-forming gap of the first film-forming and thinning composite mechanism 50. The first roller 52 and the second roller 53 can roll the electrode powder entering the film-forming gap into a first dry film sheet, and then the rolled first dry film sheet enters the first thinning gap. The second roller 53 and the third roller 54 can roll the first dry film sheet in the first thinning gap, so as to realize the first thinning treatment of the first dry film sheet. Then, the first dry film sheet after the first thinning treatment enters the second thinning gap. The third roller 54 and the fourth roller 55 can roll the first dry film sheet entering the second thinning gap, so as to realize the second thinning treatment of the first dry film sheet after the first thinning treatment. Then, the first dry film sheet after the second thinning treatment enters the composite gap. The fourth roller 55 and the fifth roller 56 can roll the first dry film sheet entering the composite gap and the current collector 1 entering the composite gap, so as to realize the lamination of the first dry film sheet after the second thinning treatment on the A side of the current collector 1.

[0049] When it is necessary to increase the width of the film-forming gap, the adjusting motors 582 of the two first gap adjusting modules respectively drive the corresponding wedge blocks 585 to move upward. Under the cooperation of the wedge block inclined surface of the wedge block 585 of the first gap adjusting module and the first inclined surface of the corresponding first roll bearing block 521, the corresponding first roll bearing block 521 can be driven to move leftward. The movement of the first roll bearing block 521 can drive the output shafts of the two pressurizing hydraulic cylinders 581 to retract and can drive the first roll 52 to move leftward. In this way, the width of the film-forming gap is increased. When it is necessary to decrease the width of the film-forming gap, first, the adjusting motors 582 of the two first gap adjusting modules respectively drive the corresponding wedge blocks 585 to move downward. At this time, the wedge block inclined surface of the wedge block 585 is separated from the first inclined surface of the corresponding first roll bearing block 521. Then, the two pressurizing hydraulic cylinders 581 are used to drive the two first roll bearing blocks 521 to move rightward, so as to drive the first roll 52 to move rightward until the first inclined surfaces of the two first roll bearing blocks 521 are respectively in cooperation with the wedge block inclined surfaces of the wedge blocks 585 of the two first gap adjusting modules. In this way, the width of the film-forming gap is decreased.

[0050] When it is necessary to increase the width of the first thinning gap, first, the adjusting motors 582 of the two second gap adjusting modules respectively drive the corresponding wedge blocks 585 to move upward. Under the cooperation of the wedge block inclined surface of the wedge block 585 and the second inclined surface of the corresponding second roll bearing block 531, the corresponding second roll bearing block 531 can be driven to move leftward, and thus the second roll 53 can be driven to move leftward. In this way, the width of the first thinning gap is increased. During this process, the movement of the second roll bearing block 531 can drive the corresponding first gap adjusting module and the corresponding first roll bearing block 521 to move leftward, and the movement of the first roll bearing block can drive the output shaft of the corresponding pressurizing hydraulic cylinder 581 to retract. When it is necessary to decrease the width of the first thinning gap, first, the adjusting motors 582 of the two second gap adjusting modules respectively drive the corresponding wedge blocks 585 to move downward. At this time, the wedge block inclined surface of the wedge block 585 is separated from the second inclined surface of the corresponding second roll bearing block 531. Then, the two pressurizing hydraulic cylinders 581 are respectively used to drive the two first roll bearing blocks 521 to move rightward. Under the action of the wedge blocks 585 of the two first gap adjusting modules, the corresponding first gap adjusting module and the corresponding second roll bearing block 531 can be driven to move rightward until the second inclined surface of the second roll bearing block 531 is in cooperation with the wedge block inclined surface of the wedge block 585 of the corresponding second gap adjusting module. In this way, the width of the first thinning gap is decreased.

[0051] When it is necessary to increase the width of the second thinning gap, first, the adjusting motors 582 of the two third gap adjusting modules respectively drive the corresponding wedge blocks 585 to move upward. Under the cooperation of the wedge block inclined surface of the wedge block 585 and the third inclined surface of the corresponding third roll bearing block 541, the corresponding third roll bearing block 541 can be driven to move leftward, and thus the third roll 54 can be driven to move leftward. In this way, the width of the second thinning gap is increased. During this process, the movement of the third roll bearing block 541 can drive the corresponding second gap adjusting module, the corresponding second roll bearing block 531, the corresponding first gap adjusting module, and the corresponding first roll bearing block 521 to move leftward. The movement of the first roll bearing block 521 can drive the output shaft of the corresponding boosting hydraulic cylinder 581 to retract. When it is necessary to decrease the width of the second thinning gap, first, the adjusting motors 582 of the two third gap adjusting modules respectively drive the corresponding wedge blocks 585 to move downward. At this time, the wedge block inclined surface of the wedge block 585 is separated from the third inclined surface of the corresponding third roll bearing block 541. Then, the two boosting hydraulic cylinders 581 respectively drive the two first roll bearing blocks 521 to move rightward. Under the action of the wedge blocks 585 of the two first gap adjusting modules and the wedge blocks 585 of the two second gap adjusting modules, the corresponding first gap adjusting module, the corresponding second roll bearing block 531, the corresponding second gap adjusting module, and the corresponding third roll bearing block 541 can be driven to move rightward until the third inclined surface of the third roll bearing block 541 is in cooperation with the wedge block inclined surface of the wedge block 585 of the corresponding third gap adjusting module. In this way, the width of the second thinning gap is decreased.

[0052] When it is necessary to increase the width of the composite gap, first, the adjusting motors 582 of the two fourth gap adjusting modules respectively drive the corresponding wedge blocks 585 to move upward. Under the cooperation of the wedge block inclined surface of the wedge block 585 and the fourth inclined surface of the corresponding fourth roll bearing block 551, the corresponding fourth roll bearing block 551 can be driven to move leftward, and then the fourth roll 55 can be driven to move leftward, so that the width of the composite gap is increased. During this process, the movement of the fourth roll bearing block 551 can drive the corresponding third gap adjusting module, the corresponding third roll bearing block 541, the corresponding second gap adjusting module, the corresponding second roll bearing block 531, the corresponding first gap adjusting module, and the corresponding first roll bearing block 521 to move leftward. The movement of the first roll bearing block 521 can drive the output shaft of the corresponding boosting hydraulic cylinder 581 to retract. When it is necessary to decrease the width of the composite gap, first, the adjusting motors 582 of the two fourth gap adjusting modules respectively drive the corresponding wedge blocks 585 to move downward. At this time, the wedge block inclined surface of the wedge block 585 is separated from the fourth inclined surface of the corresponding fourth roll bearing block 551. Then, the two boosting hydraulic cylinders 581 respectively drive the two first roll bearing blocks 521 to move rightward. Under the action of the wedge blocks 585 of the two first gap adjusting modules, the wedge blocks 585 of the two second gap adjusting modules, and the wedge blocks 585 of the two third gap adjusting modules, the corresponding first gap adjusting module, the corresponding second roll bearing block 531, the corresponding second gap adjusting module, the corresponding third roll bearing block 541, the corresponding third gap adjusting module, and the corresponding fourth roll bearing block 551 can be driven to move rightward until the fourth inclined surface of the fourth roll bearing block 551 is in cooperation with the wedge block inclined surface of the wedge block 585 of the corresponding fourth gap adjusting module, so that the width of the composite gap is decreased.

[0053] The first in - process deviation rectifying mechanism 60 is used to correct the position of the current collector 1 so that both sides of the current collector 1 are respectively aligned with both sides of the first dry film sheet after the second thinning treatment, ensuring the quality of the prepared dry electrode sheet 2. The first in - process deviation rectifying mechanism 60 is located inside the film - forming frame 51 of the first film - forming and thinning composite mechanism 50 and below the roll assembly of the first film - forming and thinning composite mechanism 50.

[0054] The first in-line deviation rectifying mechanism 60 includes a mounting frame 64, a deviation rectifying driving member 62, a deviation rectifying frame 63, and two deviation rectifying rollers 64 arranged side by side vertically. Both ends of the mounting frame 64 are respectively arranged on the inner walls of both sides of the film forming frame 51. The deviation rectifying driving member 62 is arranged on one side of the mounting frame 64, for example, on the side close to the unwinding mechanism 10. In this embodiment, there is a mounting position on one side of the mounting frame 61, the deviation rectifying driving member 62 is arranged at the bottom of the mounting position and part of the deviation rectifying driving member 62 protrudes from one side of the mounting frame 61. The deviation rectifying driving member 62 is preferably a linear motor. Understandably, the deviation rectifying driving member 62 can also be other types of driving members. The deviation rectifying frame 63 is arranged on the side of the deviation rectifying driving member 62 away from the mounting frame 61. Both ends of the two deviation rectifying rollers 64 are respectively rotatably arranged on the inner walls of both ends of the deviation rectifying frame 63. Specifically, two first deviation rectifying mounting holes and two second deviation rectifying mounting holes are respectively arranged on the inner walls of both ends of the deviation rectifying frame 63. Both ends of one deviation rectifying roller 64 are respectively rotatably arranged in the two first deviation rectifying mounting holes through, for example, deviation rectifying bearings, etc., and both ends of the other deviation rectifying roller 64 are respectively rotatably arranged in the two second deviation rectifying mounting holes through, for example, deviation rectifying bearings, etc. Part of the two deviation rectifying rollers 64 protrudes from the side of the deviation rectifying frame 63 away from the deviation rectifying driving member 62. The deviation rectifying driving member 62 is used to drive the deviation rectifying frame 63 to reciprocate along the axes of the fourth roller 55 and the fifth roller 56, that is, move back and forth, so as to drive the two deviation rectifying rollers 64 to reciprocate along the axes of the fourth roller 55 and the fifth roller 56, that is, move back and forth.

[0055] A first guide roller 65 and a second guide roller 66 are respectively arranged below and above the mounting frame 61. The second guide roller 66 is located below the compounding gap. Both the first guide roller 65 and the second guide roller 66 are located in the film forming frame 51 of the first film forming and thinning compounding mechanism 50. Both ends of the first guide roller 65 and the second guide roller 66 are respectively rotatably arranged on the inner walls of both sides of the film forming frame 51 of the first film forming and thinning compounding mechanism 50 through two guide roller bearing seats.

[0056] In practical applications, after the current collector 1 bypasses from the left and above of the first tension detection roller 30, the current collector 1 first bypasses from the right of the first idler roller 65, then from the left of the two deviation rectifying rollers 64, then from the right of the second idler roller 66, and then passes through the opening at the top of the film forming frame 51 of the first film forming and thickness reducing composite mechanism 50 and enters the composite gap of the first film forming and thickness reducing composite mechanism 50. When the current collector 1 moves forward and deviates, the deviation rectifying driving member 62 of the first traveling deviation rectifying mechanism 60 drives the two deviation rectifying rollers 64 to move backward, so as to drive the current collector 1 to move backward, thus realizing the correction of the position of the current collector 1. When the current collector 1 moves backward and deviates, the deviation rectifying driving member 62 of the first traveling deviation rectifying mechanism 60 drives the two deviation rectifying rollers 64 to move forward, so as to drive the current collector 1 to move forward, thus realizing the deviation rectification of the current collector 1. The first idler roller 65 and the second idler roller 66 provided can provide support for the current collector 1.

[0057] A first traveling deviation rectifying sensor can be arranged on one inner wall of the film forming frame 51, and the first traveling deviation rectifying sensor is used to detect whether one side edge of the current collector 1 deviates. The first traveling deviation rectifying sensor is a horseshoe-shaped ultrasonic sensor. In practical applications, one side edge of the current collector 1 passes through the first traveling deviation rectifying sensor, and the first traveling deviation rectifying sensor can detect whether one side edge of the current collector 1 deviates. When it is detected that one side edge of the current collector 1, for example, moves forward and deviates, it indicates that the current collector 1 moves forward. At this time, the deviation rectifying driving member 62 drives the two deviation rectifying rollers 64 to move backward, so as to realize the deviation rectification of the current collector 1.

[0058] Combined Figure 10 and Figure 11 As shown in the figure, the first thickness gauge is used to measure the total thickness of the current collector 1 and the first dry film sheet compounded on the A side of the current collector, which is convenient for subsequent compaction of the current collector 1, the first dry film sheet compounded on the A side of the current collector 1 and the second dry film sheet compounded on the B side of the current collector 1 by the rolling mechanism 150 to obtain a dry electrode sheet meeting the thickness requirements. The first thickness gauge (not shown in the figure) is arranged in the second mounting frame 71, and the second mounting frame 71 is located between the film forming frame 51 of the first film forming and thickness reducing composite mechanism 50 and the film forming frame 51 of the second film forming and thickness reducing composite mechanism 50. The first thickness gauge is an existing non-contact thickness gauge. In practical applications, after the current collector 1 and the first dry film sheet compounded on the A side of the current collector 1 come out from the film forming frame 511 of the first film forming and thickness reducing composite mechanism 50 and enter the second mounting frame 71, the current collector 1 and the first dry film sheet compounded on the A side of the current collector 1 pass through the first thickness gauge, and the first thickness gauge can measure the total thickness of the current collector 1 and the first dry film sheet compounded on the A side of the current collector 1.

[0059] The second swing roller mechanism 70 is used to adjust the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1. The structure of the second swing roller mechanism 70 is the same as that of the first swing roller mechanism 20, and also includes a rotating shaft 22, a swing roller 23, two swing roller arms 24 and two swing roller cylinders 25. The structure of the second swing roller mechanism 70 will not be elaborated here. Among them, two second frame holes are respectively provided on the inner walls of both sides of the second installation frame 71. The two ends of the rotating shaft 22 of the second swing roller mechanism 70 are respectively rotatably arranged in the two second frame holes of the second installation frame 71 through rotating shaft bearings, etc. The swing roller 23 of the second swing roller mechanism 70 is located to the left of the rotating shaft 22. The two swing roller cylinders 25 of the second swing roller mechanism 70 are respectively located below the two swing roller arms 24 and are respectively arranged on the inner walls of both sides of the second installation frame 71. The two swing roller cylinders 25 of the second swing roller mechanism 70 are respectively used to drive the two swing roller arms 24 to swing up and down around the axis of the rotating shaft 22, so as to drive the swing roller 23 to swing up and down. After the current collector 1 and the first dry film laminated on the A side of the current collector 1 pass through the first thickness gauge, the current collector 1 and the first dry film laminated on the A side of the current collector 1 bypass from below the swing roller 23 of the second swing roller mechanism 70. By driving the swing roller 23 to swing up and down through the two swing roller cylinders 25 of the second swing roller mechanism 70, the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1 can be adjusted, so as to control the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1, and prevent the current collector 1 and the first dry film laminated on the A side of the current collector 1 from being too tight or too loose.

[0060] The tension isolation mechanism 80 includes a steel roller 82, a rubber pressure roller 81, two connecting shafts 84, two rubber pressure roller swing arms 83 and two rubber pressure roller cylinders 85. The two ends of the steel roller 82 are rotatably arranged on the inner walls on both sides of the second mounting frame 71. Specifically, the inner walls on both sides of the second mounting frame 71 are respectively provided with two frame mounting holes, and the two ends of the steel roller 82 are respectively rotatably arranged in the two frame mounting holes of the second mounting frame 71 through, for example, steel roller bearings. The rubber pressure roller 81 is located above the steel roller 82. The two rubber pressure roller cylinders 85 are respectively located above the two rubber pressure roller swing arms 83, one end of the two rubber pressure roller swing arms 83 is rotatably connected to the two ends of the rubber pressure roller 81, and the other end of the two rubber pressure roller swing arms 83 is respectively hinged to the ends of the output shafts of the two rubber pressure roller cylinders 85. The two connecting shafts 84 are arranged front and back oppositely, and the two connecting shafts 84 are both located on the left side of the rubber pressure roller 81, and the two rubber pressure roller swing arms 83 are located between the two connecting shafts 84. One end of the two connecting shafts 84 is rotatably disposed on the inner walls on both sides of the second mounting frame 71 through connecting shaft bearing seats 841. Two swing arm through holes are respectively disposed in the middle positions of the two rubber pressure roller swing arms 83, and the two rubber pressure roller swing arms 83 are respectively fixedly sleeved on the outer periphery of the other ends of the two connecting shafts 84 through their swing arm through holes. The two rubber pressure roller cylinders 85 are respectively used to drive the two rubber pressure roller swing arms 83 to swing up and down around the axes of the two connecting shafts 84, thereby driving the rubber pressure roller 81 to move toward or away from the steel roller 82 and driving the two connecting shafts 84 to rotate. In actual application, after the current collector 1 and the first dry-process membrane composited on the surface of the current collector 1A pass between the roller surface of the steel roller 82 and the roller surface of the rubber pressure roller 81, the two rubber pressure roller swing arms 83 are respectively driven by the two rubber pressure roller cylinders 85 to swing downward, thereby driving the rubber pressure roller 82 to move toward the direction close to the steel roller 81. By moving the rubber pressure roller 82 toward the direction close to the steel roller 81, the current collector 1 and the first dry film composited on the A surface of the current collector 1 can be pressed against the roller surface of the steel roller 82 to cut off the tension of the current collector 1 and the first dry film composited on the A surface of the current collector 1, so that it is convenient to composite the first dry film that has undergone the second thinning treatment on the A surface of the current collector 1 through the first film-forming and thinning composite mechanism 50, and to composite the second dry film that has undergone the second thinning treatment on the B surface of the current collector 1 through the second film-forming and thinning composite mechanism 130.

[0061] In the present embodiment, one end of the two rubber pressure roller swing arms 83 are rotatably connected to the two ends of the rubber pressure roller 81 respectively. Specifically, one end of the two rubber pressure roller swing arms 83 is respectively provided with two swing arm mounting holes, and one end of the two rubber pressure roller swing arms 83 is respectively rotatably sleeved on the outer periphery of the two ends of the rubber pressure roller 81 through its swing arm mounting holes, and a swing arm bearing is provided in the swing arm mounting hole, and the swing arm bearing is sleeved on the outer periphery of the rubber pressure roller 81.

[0062] The second tension detection roller 90 is used to detect the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1. Both ends of the second tension detection roller 90 are rotatably arranged on the inner walls of both sides of the second installation frame 71 through two tension roller bearing seats 91. The third swing roller mechanism 100 is used to adjust the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1. The third swing roller mechanism 100 and the second swing roller mechanism 70 have the same structure and are symmetrically arranged up and down, so the structure of the third swing roller mechanism 100 will not be elaborated here. In actual application, after the current collector 1 and the first dry film laminated on the A side of the current collector 1 pass between the roller surfaces of the steel roller 82 and the rubber pressing roller 81, they first bypass below the second tension detection roller 90, and then bypass above the swing roller 23 of the third swing roller mechanism 100. The tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1 can be detected by the second tension detection roller 90. According to the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1 detected by the second tension detection roller 90, the two swing roller cylinders 25 of the third swing roller mechanism 100 can drive the swing roller 23 to swing up and down to adjust the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1, so as to realize the closed-loop control of the tension of the current collector 1 and the first dry film laminated on the A side of the current collector 1, preventing the current collector 1 and the first dry film laminated on the A side of the current collector 1 from being too tight or too loose, which is convenient for the second film forming and thinning composite mechanism 130 to laminate the second dry film after the second thinning treatment on the B side of the current collector 1.

[0063] Combined Figure 12 with Figure 13 As shown, the second feeding mechanism 120 is used to convey the electrode powder to the second film forming and thinning composite mechanism 130. The second feeding mechanism 120 and the first feeding mechanism 40 are symmetrically arranged left and right, and the second feeding mechanism 120 and the first feeding mechanism 40 have the same structure.

[0064] The second film forming and thinning composite mechanism 130 is used to roll the electrode powder into a second dry film, to perform the first thinning treatment on the second dry film, to perform the second thinning treatment on the second dry film after the first thinning treatment, and to laminate the second dry film after the second thinning treatment on the B side of the current collector 1. The B side of the current collector 1 is, for example, the back of the current collector 1. The second film forming and thinning composite mechanism 130 and the first film forming and thinning composite mechanism 50 have the same structure and are symmetrically arranged left and right, so the structure of the second film forming and thinning composite mechanism 130 will not be elaborated here. The second feeding mechanism 120 is arranged at the top of the film forming machine box 512 of the second film forming and thinning composite mechanism 130. The feeding port of the second feeding mechanism 120 faces upward, and the discharging port of the second feeding mechanism 120 is located above the film forming gap of the second film forming and thinning composite mechanism 130 and corresponds to the film forming gap.

[0065] The working principle of the second film-forming and thickness-reducing composite mechanism 130 is as follows: First, the first roller driving member drives the first roller 52 to rotate, the second roller driving member drives the second roller 53 to rotate, the third roller driving member drives the third roller 54 to rotate, the fourth roller driving member drives the fourth roller 55 to rotate, and the fifth roller driving member drives the fifth roller 56 to rotate. The rotation directions of the first roller 52 and the second roller 53 are opposite to each other, the rotation directions of the second roller 53 and the third roller 54 are opposite to each other, the rotation directions of the third roller 54 and the fourth roller 55 are opposite to each other, and the rotation directions of the fourth roller 55 and the fifth roller 56 are opposite to each other. After the electrode powder enters from the feed port of the second feeding mechanism 120, the second feeding mechanism 120 can convey the electrode powder towards the direction close to the discharge port of the second feeding mechanism 120. After the electrode powder comes out from the discharge port, the electrode powder can enter the film-forming gap of the second film-forming and thickness-reducing composite mechanism 130. The first roller 52 and the second roller 53 can roll the electrode powder entering the film-forming gap into a second dry film sheet, and then the rolled second dry film sheet enters the first thickness-reducing gap. The second roller 53 and the third roller 54 can roll the second dry film sheet in the first thickness-reducing gap, so as to realize the first thickness-reducing treatment of the second dry film sheet. Then, the second dry film sheet after the first thickness-reducing treatment enters the second thickness-reducing gap. The third roller 54 and the fourth roller 55 can roll the second dry film sheet entering the second thickness-reducing gap, so as to realize the second thickness-reducing treatment of the second dry film sheet after the first thickness-reducing treatment. Then, the second dry film sheet after the second thickness-reducing treatment enters the composite gap. The fourth roller 55 and the fifth roller 56 can roll the second dry film sheet, the current collector 1, and the first dry film sheet compounded on the A surface of the current collector 1 entering the composite gap, so as to realize compounding the second dry film sheet after the second thickness-reducing treatment on the B surface of the current collector 1.

[0066] Above the roller assembly of the second film-forming and thickness-reducing composite mechanism 50, there are two supporting idler rollers 513 arranged side by side horizontally from left to right. The two ends of the supporting idler rollers 513 are rotatably arranged on the closer sides of two supporting bearing seats respectively, and the two supporting bearing seats are respectively arranged on the top ends of the film-forming frames 511 of the second film-forming and thickness-reducing composite mechanism 120. After the second dry film sheet is compounded on the B surface of the current collector 1, the current collector 1, the first dry film sheet compounded on the A surface of the current collector 1, and the second dry film sheet compounded on the B surface of the current collector 1 bypass above the two supporting idler rollers 513, so as to provide support for the current collector 1, the first dry film sheet compounded on the A surface of the current collector 1, and the second dry film sheet compounded on the B surface of the current collector 1 through the two supporting idler rollers 513.

[0067] The second in-line deviation correction mechanism 110 is used to correct the positions of the current collector 1 and the first dry film laminated on the A side of the current collector 1, so that both sides of the current collector 1 are aligned with both sides of the second dry film after the second thinning treatment, ensuring the quality of the prepared dry electrode sheet 2. The second in-line deviation correction mechanism 110 is located inside the film forming frame 51 of the second film forming, thinning and laminating mechanism 130 and below the roll assembly of the second film forming, thinning and laminating mechanism 130. The structures of the second in-line deviation correction mechanism 110 and the first in-line deviation correction mechanism 60 are the same and they are symmetrically arranged left and right. The structure of the second in-line deviation correction mechanism 110 will not be elaborated here.

[0068] A second in-line deviation correction sensor is provided on one inner wall of the film forming frame 51 of the second film forming, thinning and laminating mechanism 130. The structure of the second in-line deviation correction sensor is the same as that of the first in-line deviation correction sensor. The second in-line deviation correction sensor is used to detect whether one side edge of the current collector 1 is deviated. In practical applications, the current collector 1 passes through the second in-line deviation correction sensor, and whether one side edge of the current collector 1 is deviated can be detected through the second in-line deviation correction sensor. When it is detected that one side edge of the current collector 1 is deviated, for example, shifted forward, it indicates that the current collector 1 is shifted forward. At this time, the deviation correction driving member 62 of the second in-line deviation correction mechanism 110 drives the two deviation correction rollers 64 to move backward, so as to realize the deviation correction of the current collector 1.

[0069] A third idler roller 67 and a fourth idler roller 68 are respectively provided below and above the mounting frame 61 of the second in-line deviation correction mechanism 110. The third idler roller 67 and the fourth idler roller 68 are both located inside the film forming frame 51 of the second film forming, thinning and laminating mechanism 130. Both ends of the third idler roller 67 and the fourth idler roller 68 are rotatably arranged on both inner walls of the film forming frame 51 of the second film forming, thinning and laminating mechanism 130 through two idler roller bearing seats.

[0070] In actual application, after the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1 come out of the second installation rack 71 and enter the film forming rack 51 of the second film forming and thinning lamination mechanism 130, the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1 first bypass from the right side of the third idler roller 67, then bypass from the left side of the two deviation rectifying rollers 64 of the second traveling deviation rectifying mechanism 110, then bypass from the right side of the fourth idler roller 68, and then pass through the opening at the top of the film forming rack 51 of the second film forming and thinning lamination mechanism 130 and enter the lamination gap of the second film forming and thinning lamination mechanism 130. When the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1 shift forward, the deviation rectifying driving member 62 of the second traveling deviation rectifying mechanism 110 drives the two deviation rectifying rollers 64 to move backward, so as to drive the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1 to move backward, thus realizing the correction of the positions of the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1. When the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1 shift backward, the deviation rectifying driving member 62 of the second traveling deviation rectifying mechanism 110 drives the two deviation rectifying rollers 64 to move forward, so as to drive the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1 to move forward, thus realizing the correction of the positions of the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1. The provided third idler roller 67 and fourth idler roller 68 can support the current collector 1 and the first dry film sheet laminated on the A surface of the current collector 1.

[0071] Combined Figure 14 As shown, the second thickness gauge is used to measure the total thickness of the current collector 1, the first dry film sheet laminated on the A surface of the current collector 1, and the second dry film sheet laminated on the B surface of the current collector 1, which is convenient for subsequent compaction of the current collector 1, the first dry film sheet laminated on the A surface of the current collector 1, and the second dry film sheet laminated on the B surface of the current collector 1 by the rolling mechanism 150 to obtain the dry electrode sheet 2 that meets the thickness requirements. The second thickness gauge (not shown in the figure) is arranged in the third installation rack 141. The second thickness gauge is an existing non-contact thickness gauge. The top of the third installation rack 141 is open. The third installation rack 41 is located between the second film forming and thinning lamination mechanism 130 and the rolling mechanism 150. In actual application, after the current collector 1, the first dry film sheet laminated on the A surface of the current collector 1, and the second dry film sheet laminated on the B surface of the current collector 1 bypass from above the two supporting idler rollers 513 and enter the third installation rack 141, the current collector 1, the first dry film sheet laminated on the A surface of the current collector 1, and the second dry film sheet laminated on the B surface of the current collector 1 pass through the second thickness gauge, and the second thickness gauge can measure the total thickness of the current collector 1, the first dry film sheet laminated on the A surface of the current collector 1, and the second dry film sheet laminated on the B surface of the current collector 1.

[0072] The fourth swing roller mechanism 140 is used to adjust the tensions of the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1. The fourth swing roller mechanism 140 has the same structure as the first swing roller mechanism 20, and also includes a rotating shaft 22, a swing roller 23, two swing roller arms 24, and two swing roller cylinders 25. The structure of the fourth swing roller mechanism 140 will not be elaborated here. Among them, two third frame holes are respectively provided on the inner walls on both sides of the third mounting frame 141. The two ends of the rotating shaft 22 of the fourth swing roller mechanism 140 are respectively rotatably arranged in the two third frame holes of the third mounting frame 141 through a rotating shaft bearing, etc. The swing roller 23 of the fourth swing roller mechanism 140 is located on the right side of the rotating shaft 22. The two swing roller arms 24 of the fourth swing roller mechanism 140 are arranged in a downward inclination. The two swing roller cylinders 25 of the fourth swing roller mechanism 140 are respectively located below the two swing roller arms 24 and are respectively arranged on the inner walls on both sides of the third mounting frame 141. The swing roller cylinders 25 of the fourth swing roller mechanism 140 are arranged in an inclined upward direction towards the second film forming and thickness reducing lamination mechanism 130. The two swing roller cylinders 25 of the fourth swing roller mechanism 140 are respectively used to drive the two swing roller arms 24 to swing up and down around the axis of the rotating shaft 22, so as to drive the swing roller 23 to swing up and down. After the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 pass through the second thickness gauge, the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 bypass below the swing roller 23 of the fourth swing roller mechanism 140. By driving the swing roller 23 to swing up and down through the two swing roller cylinders 25 of the fourth swing roller mechanism 140, the tensions of the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 can be adjusted, so as to achieve tension control, prevent the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 from being too tight or too loose, and facilitate compacting the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 through the calendering mechanism 150.

[0073] Combined Figures 15 to 17 As shown, the calendering mechanism 150 is used to roll the current collector, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1.

[0074] The calendering mechanism 150 includes two calendering frames 151 arranged opposite to each other front and back, a first calendering roll 152, a second calendering roll 153, a first calendering driving member, a second calendering driving member, and a jacking assembly. The first calendering roll 152 and the second calendering roll 153 are both located between the two calendering frames 151. The two ends of the first calendering roll 152 are respectively rotatably arranged on two first calendering bearing seats 1521, and the two ends of the second calendering roll 153 are respectively rotatably arranged on two second calendering bearing seats 1531. The first calendering roll 152 is located below the second calendering roll 153 and they are arranged side by side. There is a calendering gap between the roll surfaces of the first calendering roll 152 and the second calendering roll 153. The calendering frame 151 has an installation vacancy 1511, and the length direction of the installation vacancy 1511 is the same as the height direction of the calendering frame 151. The two first calendering bearing seats 1521 are respectively arranged in the installation vacancies 1511 of the two calendering frames 151 and can move up and down relative to the two calendering frames 151 respectively. The two second calendering bearing seats 1531 are respectively arranged in the installation vacancies 1511 of the two calendering frames 151 and can be fixed relative to the two calendering frames 151 respectively. The two first calendering bearing seats 1521 are respectively located below the two second calendering bearing seats 1531.

[0075] The two first calendering bearing seats 1521 are respectively arranged in the installation vacancies 1511 of the two calendering frames 151 and can move up and down relative to the two calendering frames 151 respectively. Specifically, two calendering sliders 1523 are respectively arranged on both sides of the first calendering bearing seat 1521, and two calendering slide rails 1522 are respectively arranged on the inner walls on both sides of the installation vacancy 1511. The length direction of the calendering slide rails 1522 is the same as the height direction of the calendering frame 151. The two calendering sliders 1523 of the first calendering bearing seat 1521 are respectively in sliding fit with the two calendering slide rails 1522 of the installation vacancy 1511 of the corresponding calendering frame 151. The number of the calendering sliders 1523 and the calendering slide rails 1522 can be set according to the actual situation.

[0076] The first calendering driving member is used to drive the first calendering roll 152 to rotate. Specifically, the first calendering driving member includes a first calendering motor 1551 and a first calendering speed reducer 1552. The first calendering motor 1551 is arranged on the first calendering speed reducer 1552, the first calendering speed reducer 1552 is arranged on the speed reducer support 1543, and the speed reducer support 1543 is arranged on the outer side of the rear calendering frame 151 (the outer side means the side where the two calendering frames 151 are away from each other). The end of the output shaft of the first calendering motor 1551 is connected to the end of the input shaft of the first calendering speed reducer 1552, and the end of the output shaft of the first calendering speed reducer 1552 is connected to one end of the first calendering roll 152. The first calendering motor 1551 is used to drive the first calendering roll 152 to rotate through the first calendering speed reducer 1552. The second calendering driving member is used to drive the second calendering roll 153 to rotate. Specifically, the second calendering driving member includes a second calendering motor 1541 and a second calendering speed reducer 1542. The second calendering motor 1541 is arranged on the second calendering speed reducer 1542, the second calendering speed reducer 1542 is arranged on the speed reducer support 1543, the end of the output shaft of the second calendering motor 1541 is connected to the end of the input shaft of the second calendering speed reducer 1542, and the end of the output shaft of the second calendering speed reducer 1542 is connected to one end of the second calendering roll 153. The second calendering motor 1541 is used to drive the second calendering roll 153 to rotate through the second calendering speed reducer 1542. In actual application, the rotation directions of the first calendering roll 152 and the second calendering roll 153 are opposite to each other.

[0077] The lifting assembly is located below the first calendering roll 152 and is used to drive the first calendering roll 152 to move in the direction of approaching or separating from the second calendering roll 153, that is, move up and down. By driving the first calendering roll 152 to move upward through the lifting assembly, upward pressure can be applied through the first calendering roll 152 to provide the pressure for calendering. Specifically, the lifting assembly includes two hydraulic cylinders 156. The two hydraulic cylinders 156 are respectively arranged at the bottom of the installation vacancies 1511 of the two calendering frames 151 and are respectively located below the two first calendering bearing seats 1521. The ends of the output shafts of the two hydraulic cylinders 156 are respectively connected to the bottom ends of the two first calendering bearing seats 1521. The two hydraulic cylinders 156 are respectively used to drive the two first calendering bearing seats 1521 to move up and down, so as to drive the first calendering roll 152 to move in the direction of approaching or separating from the second calendering roll 153, that is, move up and down. It can be understood that the hydraulic cylinder 156 can also be replaced by, for example, an electric cylinder.

[0078] In practical applications, after the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 come out from the side of the third mounting frame 141 close to the calendering mechanism 150, the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 enter the calendering gap. The first calendering driving member and the second calendering driving member respectively drive the first calendering roller 152 and the second calendering roller 153 to rotate in opposite directions, and the first calendering roller 152 is driven to move upward by the lifting assembly to apply upward pressure. Thus, the current collector 1, the first dry film laminated on the A surface of the current collector 1, and the second dry film laminated on the B surface of the current collector 1 entering the calendering gap can be calendered by the first calendering roller 152 and the second calendering roller 153 to compact the first dry film laminated on the A surface of the current collector 1 and the second dry film laminated on the B surface of the current collector 1, and thus the required dry electrode sheet 2 can be obtained.

[0079] Combined Figure 18 As shown, the third tension detection roller 160 is used to detect the tension of the dry electrode sheet 2. The third tension detection roller 160 is located in the fourth mounting frame 171, and the fourth mounting frame 171 can be set as a closed frame. In practical applications, cold air can be introduced into the fourth mounting frame 171 according to the customer's process requirements to cool the dry electrode sheet 2. Both ends of the third tension detection roller 160 are rotatably arranged on the inner walls of both sides of the fourth mounting frame 171 through two tension roller bearing seats 161. The fifth swing roller mechanism 170 is used to adjust the tension of the dry electrode sheet 2. The fifth swing roller mechanism 170 and the first swing roller mechanism 20 have the same structure and are symmetrically arranged left and right, and the structure of the fifth swing roller mechanism 170 will not be elaborated here. Among them, two fourth frame holes are respectively provided on the inner walls of both sides of the fourth mounting frame 171, and both ends of the rotating shaft 22 of the fifth swing roller mechanism 170 are rotatably arranged in the two fourth frame holes of the fourth mounting frame 171 through rotating shaft bearings, etc., and the two swing roller cylinders 25 of the fifth swing roller mechanism 170 are respectively arranged on the inner walls of both sides of the fourth mounting frame 171. In practical applications, after the dry electrode sheet 2 comes out from the calendering gap of the calendering mechanism and enters the fourth mounting frame 171, the dry electrode sheet 2 first bypasses above the third tension detection roller 160, and then bypasses the right side of the swing roller 23 of the fifth swing roller mechanism 170. The tension of the dry electrode sheet 2 can be detected by the third tension detection roller 160, and the two swing roller cylinders 25 of the fifth swing roller mechanism 170 can drive the swing roller 23 to swing left and right according to the tension of the dry electrode sheet 2 detected by the third tension detection roller 160, so that the tension of the dry electrode sheet 2 can be adjusted, and thus the closed-loop control of the tension of the dry electrode sheet 2 can be realized to prevent the dry electrode sheet 2 from being too tight or too loose, which is convenient for the winding mechanism 180 to wind the dry electrode sheet 2.

[0080] The rewinding mechanism 180 is used for rewinding the dry-type electrode sheet 2. The rewinding mechanism 180 includes a rewinding frame 181, a rewinding air shaft 182 and a rewinding motor. The fourth mounting frame 171 is located between the calendering mechanism 150 and the rewinding frame 181. The rewinding air shaft 182 is located inside the rewinding frame 181. The two ends of the rewinding air shaft 182 are rotatably arranged on the inner walls of both sides of the rewinding frame 181 through two rewinding bearing seats. A rewinding through hole is provided on one inner wall of the rewinding frame 181. A rewinding machine box 1811 is provided on one outer wall of the rewinding frame 181. The rewinding motor is arranged inside the rewinding machine box 1811. One end of the rewinding air shaft 182 passes through the rewinding through hole of the rewinding frame 181 and is located inside the rewinding machine box 1811, and is connected to the end of the output shaft of the rewinding motor. The rewinding motor is used to drive the rewinding air shaft 182 to rotate. In actual application, after the dry-type electrode sheet 2 bypasses from the right side of the swing roller 23 of the fifth swing roller mechanism 170, the rewinding motor drives the rewinding air shaft 182 to rotate, so that the dry-type electrode sheet 2 can be rewound through the rewinding air shaft 182.

[0081] In the present utility model, by sequentially arranging a unwinding mechanism 10, a first film-forming and thickness-reducing composite mechanism 50, a second film-forming and thickness-reducing composite mechanism 130, a calendering mechanism 150 and a rewinding mechanism 180, the current collector 1 can be unwound through the unwinding mechanism 10. The electrode powder can be roll-pressed into a first dry-type film sheet through the first film-forming and thickness-reducing composite mechanism 50, the first dry-type film sheet can be subjected to a first thickness-reducing treatment, the first dry-type film sheet after the first thickness-reducing treatment can be subjected to a second thickness-reducing treatment, and the first dry-type film sheet after the second thickness-reducing treatment can be compounded on the A side of the current collector 1. The electrode powder can be roll-pressed into a second dry-type film sheet through the second film-forming and thickness-reducing composite mechanism 150, the second dry-type film sheet can be subjected to a first thickness-reducing treatment, the second dry-type film sheet after the first thickness-reducing treatment can be subjected to a second thickness-reducing treatment, and the second dry-type film sheet after the second thickness-reducing treatment can be compounded on the B side of the current collector 1. The current collector 1, the first dry-type film sheet compounded on the A side of the current collector 1 and the second dry-type film sheet compounded on the B side of the current collector 1 can be roll-pressed through the calendering mechanism 150 to obtain the dry-type electrode sheet 2. The dry-type electrode sheet 2 can be rewound through the rewinding mechanism 180. Compared with the prior art, the preparation of the dry-type electrode sheet 2 can be completed by one device, can be continuously operated, does not require a transfer operation, does not consume a large amount of production time, improves production efficiency and reduces production costs.

[0082] The above is a specific description of the preferred embodiment of the present utility model, but the present invention is not limited to the described embodiment. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A dry-process electrode preparation integrated machine, characterized in that: The invention comprises an unwinding mechanism, a first film-forming and thinning composite mechanism, a second film-forming and thinning composite mechanism, a calendering mechanism and a winding mechanism which are arranged in sequence, wherein the unwinding mechanism is used to unwind the current collector, the first film-forming and thinning composite mechanism is used to roll the electrode powder into a first dry film, to perform a first thinning treatment on the first dry film, to perform a second thinning treatment on the first dry film after the first thinning treatment, and to composite the first dry film after the second thinning treatment on the A surface of the current collector, and the second film-forming and thinning composite mechanism is used to roll the electrode powder into a second dry film. The present invention relates to a dry-process film, a second dry-process film that is used for performing a first thinning treatment on the second dry-process film, a second thinning treatment on the second dry-process film that has undergone the first thinning treatment, and a composite of the second dry-process film that has undergone the second thinning treatment on the B surface of the current collector. The calendering mechanism is used for rolling the current collector, the first dry-process film composited on the A surface of the current collector, and the second dry-process film composited on the B surface of the current collector to compact the first dry-process film composited on the A surface of the current collector and the second dry-process film composited on the B surface of the current collector, thereby obtaining a dry-process electrode. The winding mechanism is used for winding the dry-process electrode.

2. The dry electrode preparation integrated machine according to claim 1, characterized in that: The first film-forming and thinning composite mechanism and the second film-forming and thinning composite mechanism are symmetrically arranged, and the first film-forming and thinning composite mechanism and the second film-forming and thinning composite mechanism both include a film-forming frame and a roller assembly, a film-forming frame is provided at the top of the film-forming frame, and the roller assembly includes a first roller, a second roller, a third roller, a fourth roller, a fifth roller, a first roller drive, a second roller drive, a third roller drive, a fourth roller drive and a fifth roller drive, the first roller, the second roller, the third roller, the fourth roller and the fifth roller are arranged side by side in the horizontal direction and are all located in the film-forming frame, two mounting grooves are respectively provided on the inner walls on both sides of the film-forming frame, two ends of the first roller are respectively rotatably arranged on two first roller bearing seats, two ends of the second roller are respectively rotatably arranged on two second roller bearing seats, two ends of the third roller are respectively rotatably arranged on two third roller bearing seats, and two ends of the fourth roller are respectively rotatably arranged on It is arranged on two fourth roller bearing seats, and the two ends of the fifth roller are rotatably arranged on the two fifth roller bearing seats respectively. The two first roller bearing seats, the two second roller bearing seats, the two third roller bearing seats, the two fourth roller bearing seats, and the two fifth roller bearing seats are respectively arranged on the bottom of the two mounting grooves. There is a film-forming gap between the roller surface of the first roller and the roller surface of the second roller, a first thinning gap between the roller surface of the second roller and the roller surface of the third roller, a second thinning gap between the roller surface of the third roller and the roller surface of the fourth roller, and a composite gap between the roller surface of the fourth roller and the roller surface of the fifth roller. The first roller driving member is used to drive the first roller to rotate, the second roller driving member is used to drive the second roller to rotate, the third roller driving member is used to drive the third roller to rotate, the fourth roller driving member is used to drive the fourth roller to rotate, and the fifth roller driving member is used to drive the fifth roller to rotate.

3. The dry electrode preparation integrated machine according to claim 2, characterized in that: The first film-forming and thinning composite mechanism and the second film-forming and thinning composite mechanism both include an adjustment drive component, a first gap adjustment component, a second gap adjustment component, a third gap adjustment component and a fourth gap adjustment component. The first gap adjustment component and the adjustment drive component are used to adjust the width of the film-forming gap, the second gap adjustment component and the adjustment drive component are used to adjust the width of the first thinning gap, the third gap adjustment component and the adjustment drive component are used to adjust the width of the second thinning gap, and the fourth gap adjustment component and the adjustment drive component are used to adjust the width of the composite gap.

4. The dry-process electrode preparation integrated machine according to claim 3, characterized in that: There are two first gaps between the two first roller bearing seats and the two second roller bearing seats, two second gaps between the two second roller bearing seats and the two third roller bearing seats, two third gaps between the two third roller bearing seats and the two fourth roller bearing seats, and two fourth gaps between the two fourth roller bearing seats and the two fifth roller bearing seats. The fifth roller bearing seat is fixedly arranged on the bottom of the corresponding mounting groove, and the first roller bearing seat, the second roller bearing seat, the third roller bearing seat, and the fourth roller bearing seat are respectively slidably arranged on the bottom of the corresponding mounting groove, and the adjustment drive assembly includes two booster hydraulic cylinders arranged opposite to each other, and the two booster hydraulic cylinders are respectively arranged on the inner walls of one end of the two mounting grooves, and the ends of the output shafts of the two booster hydraulic cylinders are respectively connected to one end of the two pressure sensors, and the other ends of the two pressure sensors are respectively connected to the first ends of the two first roller bearing seats.

5. The dry-process electrode preparation integrated machine according to claim 4, characterized in that: The second end of the first roller bearing seat is provided with a first inclined surface, the second end of the second roller bearing seat is provided with a second inclined surface, the second end of the third roller bearing seat is provided with a third inclined surface, and the second end of the fourth roller bearing seat is provided with a fourth inclined surface. The first gap adjustment component includes two first gap adjustment modules that are oppositely arranged, and the two first gap adjustment modules correspond to the two first gaps respectively. The second gap adjustment component includes two second gap adjustment modules that are oppositely arranged, and the two second gap adjustment modules correspond to the two second gaps respectively. The third gap adjustment component includes two third gap adjustment modules that are oppositely arranged, and the two third gap adjustment modules correspond to the two third gaps respectively. The fourth gap adjustment component includes two fourth gap adjustment modules that are oppositely arranged, and the two fourth gap adjustment modules correspond to the two fourth gaps respectively. The first gap adjustment module, the second gap adjustment module, the third gap adjustment module, and the fourth gap adjustment module all include an adjustment motor, an adjustment reducer, a screw and a wedge block. The adjustment motor and the adjustment reducer are both located in the film forming frame. The adjustment reducer is slidably arranged at the bottom end of the film forming frame. The adjustment motor is arranged on the adjustment reducer. The end of the output shaft of the adjustment motor is connected to the end of the input shaft of the adjustment reducer. One end of the screw is connected to the end of the output shaft of the adjustment reducer. The other end of the screw of the first gap adjustment module passes through the The first strip hole of the film forming frame is located in the corresponding first gap, and the screw rod can move between the two ends of the first strip hole. The other end of the screw rod of the second gap adjustment module passes through the second strip hole of the film forming frame and is located in the corresponding second gap, and the screw rod can move between the two ends of the second strip hole. The other end of the screw rod of the third gap adjustment module passes through the third strip hole of the film forming frame and is located in the corresponding third gap, and the screw rod can move between the two ends of the third strip hole. The other end of the screw rod of the fourth gap adjustment module passes through the The fourth strip hole is located in the corresponding fourth gap, and the screw rod can move between the two ends of the fourth strip hole, the wedge block is threadedly matched with the screw rod, the first end of the wedge block has a wedge block inclined surface, the wedge block of the first gap adjustment module is located in the corresponding first gap, and the wedge block inclined surface and the second end of the wedge block are respectively matched with the first inclined surface of the corresponding first roller bearing seat, and the first end of the corresponding second roller bearing seat is slidably connected, the wedge block of the second gap adjustment module is located in the corresponding second gap, and the wedge block inclined surface and the second end of the wedge block are respectively matched with the corresponding The second inclined surface of the second rolling roller bearing seat cooperates with the first end of the corresponding third rolling roller bearing seat, and is slidably connected. The wedge block of the third gap adjustment module is located in the corresponding third gap, and the wedge block inclined surface and the second end of the wedge block respectively cooperate with the third inclined surface of the corresponding third rolling roller bearing seat, and are slidably connected to the first end of the corresponding fourth rolling roller bearing seat. The wedge block of the fourth gap adjustment module is located in the corresponding fourth gap, and the wedge block inclined surface and the second end of the wedge block respectively cooperate with the fourth inclined surface of the corresponding fourth rolling roller bearing seat, and are slidably connected to the first end of the corresponding fifth rolling roller bearing seat.

6. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: It also includes a first swing roller mechanism and a first tension detection roller which are sequentially arranged between the unwinding mechanism and the first film-forming and thinning composite mechanism. The first swing roller mechanism includes a rotating shaft, a swing roller, two swing roller arms and two swing roller cylinders. The rotating shaft and the first tension detection roller are both located in the first mounting frame. Both ends of the rotating shaft and both ends of the first tension detection roller are rotatably arranged on the inner walls on both sides of the first mounting frame respectively. The swing roller is located below the rotating shaft. The two swing roller arms are spaced apart along the axis of the rotating shaft and are arranged opposite to each other. One end of the two swing roller arms is respectively sleeved on the outer periphery of the rotating shaft. The swing roller is located between the two swing roller arms. Both ends of the swing roller are rotatably arranged on the other ends of the two swing roller arms respectively. The two swing roller cylinders are respectively arranged on the inner walls on both sides of the first mounting frame. The ends of the output shafts of the two swing roller cylinders are respectively connected to the two swing roller arms. The two swing roller cylinders are respectively used to drive the two swing roller arms to swing around the axis of the rotating shaft, thereby driving the swing roller to swing.

7. The dry-process electrode preparation integrated machine according to claim 2, characterized in that: The deflection correction device further comprises a first traveling deflection correction mechanism arranged below the roller assembly of the first film-forming, thinning and composite mechanism, the first traveling deflection correction mechanism comprising a mounting frame, a deflection correction driving member, a deflection correction frame and two deflection correction rollers arranged side by side up and down, the two ends of the mounting frame are respectively arranged on the inner walls on both sides of the film-forming frame, the deflection correction driving member is arranged on one side of the mounting frame, the deflection correction frame is arranged on the side of the deflection correction driving member away from the mounting frame, the two ends of the two deflection correction rollers are respectively rotatably arranged on the inner walls at both ends of the deflection correction frame, the two deflection correction roller parts both protrude from the side of the deflection correction frame away from the deflection correction driving member, the deflection correction driving member is used to drive the deflection correction frame to reciprocate along the axis of the fourth roller and the fifth roller, thereby driving the two deflection correction rollers to reciprocate along the axis of the fourth roller and the fifth roller.

8. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: The calendering mechanism comprises two calendering frames arranged opposite to each other, a first calendering roller, a second calendering roller, a first calendering driving member, a second calendering driving member and a lifting assembly, wherein the first calendering roller and the second calendering roller are both located between the two calendering frames, the two ends of the first calendering roller are respectively rotatably arranged on the two first calendering bearing seats, the two ends of the second calendering roller are respectively rotatably arranged on the two second calendering bearing seats, the calendering frames have installation spaces, the two first calendering bearing seats are respectively arranged in the installation spaces of the two calendering frames and can respectively move up and down relative to the two calendering frames, and the two second calendering rollers are respectively arranged in the installation spaces of the two calendering frames. The calendering bearing seats are respectively fixed in the installation spaces of the two calendering frames, the first calendering roller is located below the second calendering roller and the two are arranged side by side, a calendering gap is provided between the roller surface of the first calendering roller and the roller surface of the second calendering roller, the two first calendering bearing seats are respectively located below the two second calendering bearing seats, the first calendering driving member is used to drive the first calendering roller to rotate, the second calendering driving member is used to drive the second calendering roller to rotate, the lifting assembly is located below the first calendering roller and is used to drive the first calendering roller to move toward or away from the second calendering roller.

9. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: It also includes a first thickness gauge, a second swing roller mechanism, a tension isolation mechanism, a second tension detection roller and a third swing roller mechanism which are sequentially arranged between the first film-forming and thinning composite mechanism and the second film-forming and thinning composite mechanism.

10. The dry-process electrode preparation integrated machine according to claim 2, characterized in that: It also includes a second traveling deviation correcting mechanism arranged below the roller assembly of the second film forming and thinning composite mechanism.

11. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: It also includes a second thickness gauge and a fourth swing roller mechanism which are sequentially arranged between the second film-forming and thinning composite mechanism and the calendering mechanism.

12. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: It also includes a third tension detection roller and a fifth swing roller mechanism which are sequentially arranged between the calendering mechanism and the winding mechanism.

13. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: The unwinding mechanism includes an unwinding frame, an unwinding air-inflating shaft and an unwinding motor. The unwinding air-inflating shaft is located in the unwinding frame, and the two ends of the unwinding air-inflating shaft are respectively arranged on the inner walls on both sides of the unwinding frame. The unwinding motor is used to drive the unwinding air-inflating shaft to rotate.

14. The dry-process electrode preparation integrated machine according to claim 13, characterized in that: It also includes an unwinding correction mechanism, which includes a correction electric cylinder and a correction sensor. The unwinding frame is slidably arranged on the top of the substrate, the correction electric cylinder is arranged on the top of the substrate, the end of the output shaft of the correction electric cylinder is connected to the bottom end of the unwinding frame, and the correction sensor is arranged on one side inner wall of the unwinding frame. The correction sensor is used to detect whether one side edge of the collector is offset.

15. The dry-process electrode preparation integrated machine according to claim 1, characterized in that: The winding mechanism includes a winding frame, a winding air-inflating shaft and a winding motor. The winding air-inflating shaft is located in the winding frame. The two ends of the winding air-inflating shaft are rotatably arranged on the inner walls on both sides of the winding frame. The winding motor is used to drive the winding air-inflating shaft to rotate.

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