A folding double-sided dry electrode production equipment

Abstract

The present invention discloses a folding double-sided dry electrode production device, including a first rolling mechanism, a second rolling mechanism and a winding mechanism, and also including an unwinding mechanism, a calendering mechanism and a first traction mechanism, wherein the unwinding mechanism is used to unwind the current collector and to support the current collector compounded with the first electrode membrane, the calendering mechanism is used to calender the dry electrode, the first traction mechanism is used to traction the current collector compounded with the first electrode membrane and to support the current collector, and the first rolling mechanism, the first traction mechanism, the unwinding mechanism, the second rolling mechanism, the calendering mechanism and the winding mechanism are arranged in sequence from left to right. The present invention can avoid the risk of wrinkles in the current collector, save production time, and improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to a folding double-sided dry electrode production device. Background Art

[0002] At present, the production of dry electrodes is generally completed using dry electrode production equipment.

[0003] Existing dry electrode production equipment generally includes an unwinding mechanism, a first rolling mechanism, a traction mechanism, a second rolling mechanism and a winding mechanism, which are arranged in sequence from left to right. In actual application, an automatic feeding device is generally provided on the left side of the first rolling mechanism, i.e., between the first rolling mechanism and the unwinding mechanism, and on the right side of the second rolling mechanism, i.e., between the second rolling mechanism and the winding mechanism. The electrode powder is fed to the first rolling mechanism through the automatic feeding device between the first rolling mechanism and the unwinding mechanism, and the electrode powder is rolled into a first electrode membrane by the first rolling mechanism. A thinning treatment is performed and the thinned first electrode membrane is composited on one side of the current collector unwound by the unwinding mechanism, the current collector composited with the first electrode membrane is pulled by the traction mechanism, the electrode powder is fed to the second rolling mechanism by the automatic feeding equipment between the second rolling mechanism and the winding mechanism, the electrode powder is rolled into a second electrode membrane by the second rolling mechanism, the second electrode membrane is thinned and the thinned second electrode membrane is composited on the other side of the current collector to form a dry electrode, and then the dry electrode is wound up by the winding mechanism.

[0004] In the above structure, since the current collector unwound by the unwinding mechanism is fed from left to right, the unwound current collector needs to pass over the automatic loading device between the first rolling mechanism and the unwinding mechanism, and the height of the automatic loading device is generally higher than the height of the unwinding mechanism, the first rolling mechanism, and the second rolling mechanism. This makes the feeding height of the current collector relatively high, which leads to the risk of wrinkles on the current collector. At the same time, this type of dry electrode production equipment cannot compact and thin the dry electrode to increase the energy density of the dry electrode. After the dry electrode is rolled up, it needs to be completed by other calendering equipment, which increases production time and reduces production efficiency. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a folding double-sided dry electrode production device, which can avoid the risk of wrinkles on the current collector, save production time, and improve production efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A folding double-sided dry electrode production device, comprising a first rolling mechanism, a second rolling mechanism, and a winding mechanism, wherein the first rolling mechanism is used to roll electrode powder into a first electrode membrane, thin the first electrode membrane, and composite the thinned first electrode membrane on one side of a current collector, the second rolling mechanism is used to roll electrode powder into a second electrode membrane, thin the second electrode membrane, and composite the thinned second electrode membrane on the other side of a current collector to form a dry electrode, the winding mechanism is used to roll the dry electrode, and also includes an unwinding mechanism, a calendering mechanism, and a first traction mechanism, the unwinding mechanism is used to unwind the current collector and to support the current collector composited with the first electrode membrane, the calendering mechanism is used to calender the dry electrode, and the first traction mechanism is used to tumble the dry electrode. The first rolling mechanism, the first pulling mechanism, the unwinding mechanism, the second rolling mechanism, the calendering mechanism and the winding mechanism are arranged in sequence from left to right. The unwinding mechanism is also used to support the current collector compounded with the first electrode membrane. The current collector unrolled by the unwinding mechanism passes through the first pulling mechanism and the first rolling mechanism in sequence from right to left. After the first electrode membrane that has been thinned is compounded on one side of the current collector by the first rolling mechanism, the current collector compounded with the first electrode membrane passes through the first pulling mechanism, the unwinding mechanism and the second rolling mechanism in sequence from left to right. After the second electrode membrane that has been thinned is compounded on the other side of the current collector by the second rolling mechanism to form a dry electrode, the dry electrode first passes through the calendering mechanism and is then wound up by the winding mechanism.

[0008] As a preferred technical solution, the first rolling mechanism and the second rolling mechanism both include a rolling frame and a roller assembly, the roller assembly includes a first roller, a plurality of second rollers and a third roller, the two ends of the first roller, the second roller and the third roller are rotatably arranged on the rolling frame respectively, the first roller, the plurality of second rollers and the third roller of the first rolling mechanism are arranged in sequence from left to right, the first roller, the plurality of second rollers and the third roller of the second rolling mechanism are arranged in sequence from right to left, there is a film forming gap between the first roller and the adjacent second roller, there is a thinning gap between the two adjacent second rollers, the third roller There is a composite gap between the first roller and the adjacent second roller, and the widths of the film-forming gap and the multiple thinning gaps gradually decrease in the direction approaching the composite gap. One end of the first roller is connected to the first roller drive assembly, which is arranged on the rolling frame and used to drive the first roller to rotate. One end of the second roller is connected to the second roller drive assembly, which is arranged on the rolling frame and used to drive the second roller to rotate. One end of the third roller is connected to the third roller drive assembly, which is arranged on the rolling frame and used to drive the third roller to rotate.

[0009] As a preferred technical solution, it also includes a first process correcting mechanism and a second process correcting mechanism, the first process correcting mechanism is arranged on the rolling frame of the first rolling mechanism, the first process correcting mechanism is located to the right of the third roller of the first rolling mechanism and above the third roller of the first rolling mechanism, the second process correcting mechanism is arranged on the rolling frame of the second rolling mechanism, the second process correcting mechanism is located to the left of the third roller of the second rolling mechanism and above the third roller of the second rolling mechanism.

[0010] As a preferred technical solution, the first process correcting mechanism and the second process correcting mechanism both include a correcting linear motor, a correcting mounting plate arranged at the top of the correcting linear motor and two correcting rollers. The correcting linear motor of the first process correcting mechanism is arranged on the rolling frame of the first rolling mechanism, and the correcting linear motor of the second process correcting mechanism is arranged on the rolling frame of the second rolling mechanism. The two correcting rollers are arranged side by side left and right, and the two ends of the correcting rollers are rotatably arranged at the top of the correcting mounting plate respectively. The correcting linear motor is used to drive the correcting mounting plate to move forward and backward.

[0011] As a preferred technical solution, it also includes a first CCD detection mechanism and a second CCD detection mechanism, the first CCD detection mechanism is arranged on the rolling frame of the first rolling mechanism, the first CCD detection mechanism is located below the roller assembly of the first rolling mechanism, the second CCD detection mechanism is arranged on the rolling frame of the second rolling mechanism, the second CCD detection mechanism is located below the roller assembly of the second rolling mechanism, the first CCD detection mechanism and the second CCD detection mechanism both include a detection support roller and a CCD camera, the two ends of the detection support roller of the first CCD detection mechanism are respectively rotatably arranged on the rolling frame of the first rolling mechanism, the two ends of the detection support roller of the second CCD detection mechanism are respectively rotatably arranged on the rolling frame of the second rolling mechanism, the CCD camera of the first CCD detection mechanism is arranged on the rolling frame of the first rolling mechanism, the CCD camera of the second CCD detection mechanism is arranged on the rolling frame of the second rolling mechanism, the CCD camera is located above the detection support roller, and the lens of the CCD camera is opposite to the detection support roller.

[0012] As a preferred technical solution, the calendering mechanism includes a calendering frame, a lower calendering roller, an upper calendering roller, two jacking drive parts, an upper calendering roller drive assembly and a lower calendering roller drive assembly, the outer peripheries of both ends of the upper calendering roller are respectively sleeved with two upper calendering bearing seats, the two upper calendering bearing seats are respectively fixedly arranged on the calendering frame, the outer peripheries of both ends of the lower calendering roller are respectively sleeved with two lower calendering bearing seats, the two lower calendering bearing seats are respectively slidably arranged on the calendering frame, the upper calendering roller and the lower calendering roller are arranged opposite to each other up and down with a calendering gap between them, and the two lower calendering bearing seats are respectively located below the two upper calendering bearing seats , two jacking driving members are respectively arranged on the calendering frame and are respectively located below the two lower calendering bearing seats, the output ends of the two jacking driving members are respectively connected to the two lower calendering bearing seats, and the two jacking driving members are respectively used to drive the two lower calendering bearing seats to move up and down, the upper calendering roller driving assembly and the lower calendering roller driving assembly are both arranged on the calendering frame, one end of the upper calendering roller is connected to the upper calendering roller driving assembly, and the upper calendering roller driving assembly is used to rotate the upper calendering roller, and one end of the lower calendering roller is connected to the lower calendering roller driving assembly, and the lower calendering roller driving assembly is used to drive the lower calendering roller to rotate.

[0013] As a preferred technical solution, it also includes a front stretching mechanism and a rear stretching mechanism, which are symmetrically arranged on the left and right, and the lower calendering roller and the upper calendering roller are located between the front stretching mechanism and the rear stretching mechanism. The front stretching mechanism and the rear stretching mechanism both include a tension barrier assembly, a tension swing roller assembly and a tension detection roller, and the tension barrier assembly, the tension swing roller assembly and the tension detection roller are arranged in sequence along the direction close to the lower calendering roller and the upper calendering roller.

[0014] As a preferred technical solution, it also includes a second traction mechanism arranged between the second rolling mechanism and the calendering mechanism; the first traction mechanism and the second traction mechanism both include a traction frame, a traction steel roller, a traction steel roller driving assembly, a traction rubber pressure roller located above the traction steel roller and opposite to the traction steel roller, two traction connecting shafts arranged opposite to each other in the front and back direction, two traction swing arms arranged opposite to each other in the front and back direction, and two traction cylinders, the two ends of the traction steel roller are respectively rotatably arranged on the traction frame, the traction rubber pressure roller is rotatably arranged between the first ends of the two traction swing arms, the first ends of the two traction connecting shafts are respectively arranged on the traction frame, and the two traction swing arms are respectively rotatable The two traction cylinders are respectively arranged on the traction frame and are located on the right side of the two traction swing arms. The two traction cylinders are respectively arranged vertically with the two traction swing arms. The output ends of the two traction cylinders are respectively connected with the two traction swing arms. The two traction cylinders are respectively used to drive the two traction swing arms to rotate left and right around the axis of the corresponding traction connection shaft, so as to drive the traction rubber pressure roller to move away from or close to the traction steel roller. The traction steel roller driving assembly is arranged on the traction frame. One end of the traction steel roller is connected with the traction steel roller driving assembly. The traction steel roller driving assembly is used to drive the traction steel roller to rotate.

[0015] As a preferred technical solution, the first traction mechanism also includes a traction roller, which is located above the traction steel roller and the traction rubber pressure roller of the first traction mechanism, and the two ends of the traction roller are rotatably arranged on the traction frame of the first traction mechanism; the unwinding mechanism includes an unwinding frame, an unwinding shaft, an unwinding motor and an unwinding roller, the two ends of the unwinding shaft are rotatably arranged on the unwinding frame, the unwinding motor is arranged on the unwinding frame, one end of the unwinding shaft is connected to the output end of the unwinding motor, and the unwinding motor is used to drive the unwinding shaft to rotate, the unwinding roller is located below the unwinding shaft, and the two ends of the unwinding roller are rotatably arranged on the unwinding frame.

[0016] As a preferred technical solution, it also includes a first surface density thickness measuring machine, a second surface density thickness measuring machine and a third surface density thickness measuring machine. The first surface density thickness measuring machine is arranged between the unwinding mechanism and the second rolling mechanism, or is arranged between the first traction mechanism and the second rolling mechanism and is located in the supporting platform, the second surface density thickness measuring machine is arranged between the second rolling mechanism and the second traction mechanism, and the third surface density thickness measuring machine is arranged between the calendering mechanism and the winding mechanism.

[0017] The beneficial effects of the present invention are as follows: the present invention sets a first rolling mechanism, an unwinding mechanism, a second rolling mechanism, a winding mechanism, a calendering mechanism and a first traction mechanism, and arranges the first rolling mechanism, the first traction mechanism, the unwinding mechanism, the second rolling mechanism, the calendering mechanism and the winding mechanism in sequence from left to right. Compared with the prior art, the unrolled current collector does not need to pass over the automatic loading device located on the left side of the first rolling mechanism, so that the belt height of the current collector will not be very high, thereby avoiding the risk of wrinkles in the current collector. At the same time, the calendering mechanism can be used to calender the dry electrode, so that the dry electrode can be compacted and thinned, thereby improving the energy density of the dry electrode. In this way, the calendering of the dry electrode does not need to be completed by other calendering equipment, thereby saving production time and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a structural schematic diagram of a folding double-sided dry electrode production device provided by an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 A schematic structural diagram of a first rolling mechanism, a first process deviation correction mechanism and a first CCD detection mechanism of the folding double-sided dry electrode production equipment shown;

[0021] Figure 3 yes Figure 2 The structural schematic diagram of the first process correction mechanism is shown;

[0022] Figure 4 yes Figure 1 The schematic diagram of the structure of the unwinding mechanism of the folding double-sided dry electrode production equipment shown;

[0023] Figure 5 yes Figure 1 A schematic structural diagram of a second rolling mechanism, a second process deviation correction mechanism, and a second CCD detection mechanism of the folding double-sided dry electrode production equipment shown;

[0024] Figure 6 yes Figure 1The structural schematic diagram of the winding mechanism of the folding double-sided dry electrode production equipment shown;

[0025] Figure 7 yes Figure 1 The schematic diagram of the structure of the calendering mechanism, the front stretching mechanism and the rear stretching mechanism of the folding double-sided dry electrode production equipment shown;

[0026] Figure 8 yes Figure 7 A schematic structural diagram of the tension partition assembly of the front stretching mechanism shown;

[0027] Fig. 9 yes Figure 7 A schematic structural diagram of a tension swing roller assembly of the front stretching mechanism shown;

[0028] Fig.10 yes Figure 1 A schematic structural diagram of a first traction mechanism of the folding double-sided dry electrode production equipment shown;

[0029] Fig.11 yes Fig.10 The schematic diagram of the structure of the traction steel roller, traction rubber pressure roller, two traction connecting shafts, two traction swing arms and two traction cylinders of the first traction mechanism shown;

[0030] Fig.12 yes Figure 1 The schematic diagram of the structure of the second traction mechanism of the return-type double-sided dry electrode production equipment is shown.

[0031] Reference numerals:

[0032] 10. First rolling mechanism; 11. Rolling frame; 121. First roller; 122. Second roller; 123. Third roller; 13. First roller pressing roller; 14. Second roller pressing roller;

[0033] 20. Unwinding mechanism; 21. Unwinding frame; 22. Unwinding roller;

[0034] 30. Second rolling mechanism;

[0035] 40. Winding mechanism; 41. Winding frame;

[0036] 50. calendering mechanism; 51. calendering frame; 52. lower calendering roller; 53. upper calendering roller; 54. first calendering roller; 55. second calendering roller;

[0037] 60. First traction mechanism; 61. Traction frame; 62. Traction steel roller; 63. Traction rubber pressure roller; 64. Traction swing arm; 65. Traction cylinder; 66. Traction roller; 67. Traction support roller;

[0038] 70. second traction mechanism; 80. first surface density and thickness measuring integrated machine; 90. second surface density and thickness measuring integrated machine; 100. third surface density and thickness measuring integrated machine;

[0039] 110, first process deviation correction mechanism; 1101, deviation correction linear motor; 1102, deviation correction mounting plate; 1103, deviation correction roller; 1104, vertical plate;

[0040] 120. Second process deviation correction mechanism;

[0041] 130, first CCD detection mechanism; 1301, detection support roller; 1302, CCD camera;

[0042] 140. Second CCD detection mechanism;

[0043] 150, front stretching mechanism; 1501, partition steel roller; 1502, partition rubber pressure roller; 1503, partition swing arm; 1504, partition cylinder; 1505, rotating roller; 1506, swing roller swing arm; 1507, swing roller;

[0044] 160, rear stretching mechanism;

[0045] 300. Automatic loading equipment. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the invention can be combined interchangeably without conflicting with each other.

[0047] Please refer to Figure 1A folding double-sided dry electrode production device provided by an embodiment of the present invention includes a first rolling mechanism 10, an unwinding mechanism 20, a second rolling mechanism 30, a winding mechanism 40, a calendering mechanism 50, a first traction mechanism 60, a second traction mechanism 70, a first surface density thickness measuring integrated machine 80, a second surface density thickness measuring integrated machine 90, a third surface density thickness measuring integrated machine 100, a first process correction mechanism 110, a second process correction mechanism 120, a first CCD detection mechanism 130, a second CCD detection mechanism 140, a front stretching mechanism 150 and a rear stretching mechanism 160. The first rolling mechanism 10, the first traction mechanism 60, the unwinding mechanism 20, the first surface density thickness measuring integrated machine 80, the second rolling mechanism 30, the second surface density thickness measuring integrated machine 90, the second traction mechanism 70, the calendering mechanism 50, the third surface density thickness measuring integrated machine 100 and the winding mechanism 40 are arranged in sequence from left to right. The first rolling mechanism 10 is used to roll the electrode powder into a first electrode membrane, thin the first electrode membrane, and composite the thinned first electrode membrane on one side of the current collector. The second rolling mechanism 30 is used to roll the electrode powder into a second electrode membrane, thin the second electrode membrane, and composite the thinned second electrode membrane on the other side of the current collector to form a dry electrode. The unwinding mechanism 20 is used to unwind the current collector and to support the current collector composited with the first electrode membrane. The winding mechanism 40 is used to wind the dry electrode. The calendering mechanism 50 is used to calender the dry electrode to compact and thin the dry electrode, thereby improving the energy density of the dry electrode. The first traction mechanism 60 is used to traction the current collector composited with the first electrode membrane and to support the current collector, and the second traction mechanism 70 is used to traction the dry electrode. The first surface density thickness measuring integrated machine 80 is used to detect the thickness of the current collector compounded with the first electrode membrane, the second surface density thickness measuring integrated machine 90 is used to detect the thickness of the dry electrode before the dry electrode is compacted by the calendering mechanism 50, and the third surface density thickness measuring integrated machine 100 is used to detect the thickness of the dry electrode after the dry electrode is compacted by the calendering mechanism 50. The first process correction mechanism 110 is used to correct the current collector, which can ensure that the two sides of the first electrode membrane and the two sides of the current collector are aligned, thereby improving the quality of the dry electrode. The second process correction mechanism 120 is used to correct the current collector compounded with the first electrode membrane, which can ensure that the two sides of the second electrode membrane and the two sides of the current collector are aligned, thereby improving the quality of the dry electrode. The first CCD detection mechanism 130 is used to detect whether the two sides of the first electrode membrane and the two sides of the current collector are aligned and whether the first electrode membrane has defects. The second CCD detection mechanism 140 is used to detect whether the two sides of the second electrode membrane and the two sides of the current collector are aligned and whether the second electrode membrane has defects.The front stretching mechanism 150 is used to isolate the tension of the dry electrode, detect the tension of the dry electrode, and adjust the tension of the dry electrode according to the detected tension value of the dry electrode before the dry electrode is rolled by the rolling mechanism 50. The rear stretching mechanism 160 is used to isolate the tension of the dry electrode, detect the tension of the dry electrode, and adjust the tension of the dry electrode according to the detected tension value of the dry electrode after the dry electrode is rolled by the rolling mechanism 50. The current collector unwound by the unwinding mechanism 20 passes through the first traction mechanism 60, the first process correction mechanism 110 and the first rolling mechanism 10 from right to left in sequence. After the first electrode membrane that has been thinned is compounded on one side of the current collector by the first rolling mechanism 10, the current collector compounded with the first electrode membrane passes through the first CCD detection mechanism 130, the first traction mechanism 60, the unwinding mechanism 20, the first surface density thickness measuring machine 80 and the second rolling mechanism 30 from left to right in sequence. After the second electrode membrane that has been thinned is compounded on the other side of the current collector by the second rolling mechanism 30 to form a dry electrode, the dry electrode passes through the second surface density thickness measuring machine 90, the second traction mechanism 70, the calendering mechanism 50, the third surface density thickness measuring machine 100 from left to right in sequence, and is then rolled up by the winding mechanism 40.

[0048] Specific, combined Figure 2 , Figure 3 and Figure 5 As shown, the first rolling mechanism 10 and the second rolling mechanism 30 both include a rolling frame 11 and a roller assembly.

[0049] The roller assembly includes a first roller 121, a plurality of second rollers 122 and a third roller 123, and both ends of the first roller 121, the second roller 122 and the third roller 123 are rotatably arranged on the roller press frame 11. The first roller 121, the plurality of second rollers 122 and the third roller 123 of the first roller press mechanism 10 are arranged in sequence from left to right, and the first roller 121, the plurality of second rollers 122 and the third roller 123 of the second roller press mechanism 30 are arranged in sequence from right to left. There is a film-forming gap between the first roller 121 and the adjacent second roller 122, there is a thinning gap between the two adjacent second rollers 122, and there is a composite gap between the third roller 123 and the adjacent second roller 122, and the widths of the film-forming gap and the plurality of thinning gaps gradually decrease in the direction close to the composite gap. In actual application, the rotation direction of the first roller 121 is opposite to that of the adjacent second roller 122 , the rotation directions of the two adjacent second rollers 122 are opposite, and the rotation direction of the third roller 123 is opposite to that of the adjacent second rollers 122 .

[0050] In this embodiment, there are four second rollers 122, so the thinning gap is three. The first rolling mechanism 10 of the present invention can achieve three thinning processes for the first electrode membrane, and the second rolling mechanism 30 can achieve three thinning processes for the second electrode membrane. It can be understood that the second rollers 122 can also be, for example, two, three, five, six, etc., which can be set according to actual conditions.

[0051] In this embodiment, the two ends of the first roller 121 are rotatably arranged on the rolling frame 11 through two first roller bearing seats, the two ends of the second roller 122 are rotatably arranged on the rolling frame 11 through two second roller bearing seats, and the two ends of the third roller 123 are rotatably arranged on the rolling frame 11 through two third roller bearing seats.

[0052] One end of the first roller 121 is connected to the first roller drive assembly, which is arranged on the roller press frame 11 and is used to drive the first roller 121 to rotate, one end of the second roller 122 is connected to the second roller drive assembly, which is arranged on the roller press frame 11 and is used to drive the second roller 122 to rotate, and one end of the third roller 123 is connected to the third roller drive assembly, which is arranged on the roller press frame 11 and is used to drive the third roller 123 to rotate. In this embodiment, the first roller drive assembly, the second roller drive assembly and the third roller drive assembly all include a roller reducer and a roller motor, the roller reducer is arranged on the roller press frame 11, the roller motor is arranged on the roller reducer, the output end of the roller motor is connected to the input end of the roller reducer, the output end of the roller reducer of the first roller drive assembly is connected to one end of the first roller 121, the output end of the roller reducer of the second roller drive assembly is connected to one end of the second roller 122, and the output end of the roller reducer of the third roller drive assembly is connected to one end of the third roller 123. The roller motor is used to drive the corresponding roller to rotate through the roller reducer.

[0053] In this embodiment, a first roller 13 and a second roller 14 are respectively provided above and below the composite gap, and both ends of the first roller 13 and the second roller 14 are rotatably provided on the roller frame 11 through two roller bearing seats, respectively. The first roller 13 is used to support the current collector, and the second roller 14 is used to support the current collector composited with the first electrode membrane. The first roller 13 and the second roller 14 can ensure that the current collector passes through the composite gap in the vertical direction, so as to facilitate the composite of the first electrode membrane on one side of the current collector.

[0054] The first process deviation correction mechanism 110 is arranged on the rolling frame 11 of the first rolling mechanism 10, and the first process deviation correction mechanism 110 is located to the right of the third roller 123 of the first rolling mechanism 10 and above the third roller 123 of the first rolling mechanism 10. The second process deviation correction mechanism 120 is arranged on the rolling frame 11 of the second rolling mechanism 30, and the second process deviation correction mechanism 120 is located to the left of the third roller 123 of the second rolling mechanism 30 and above the third roller 123 of the second rolling mechanism 30.

[0055] The first process correcting mechanism 110 and the second process correcting mechanism 120 both include a correcting linear motor 1101, a correcting mounting plate 1102 disposed at the top of the correcting linear motor 1101, and two correcting rollers 1103. The correcting linear motor 1101 of the first process correcting mechanism 110 is disposed on the rolling frame 11 of the first rolling mechanism 10, and the correcting linear motor 1101 of the second process correcting mechanism 120 is disposed on the rolling frame 11 of the second rolling mechanism 30. The two correcting rollers 1103 are disposed side by side in a left-right manner, and the two ends of the correcting rollers 1103 are rotatably disposed at the top of the correcting mounting plate 1102, respectively. The correcting linear motor 1101 is used to drive the correcting mounting plate 1102 to move forward and backward, thereby driving the two correcting rollers 1103 to move forward and backward.

[0056] In this embodiment, two vertical plates 1104 are arranged opposite to each other in the front and back directions at the top of the correction mounting plate 1102. The vertical plates 1104 are provided with mounting holes corresponding to the correction roller 1103. The two ends of the correction roller 1103 are rotatably arranged in the mounting holes of the two vertical plates 1104 through two correction bearings.

[0057] The first CCD detection mechanism 130 is disposed on the rolling frame 11 of the first rolling mechanism 10, and the first CCD detection mechanism 130 is located below the roller assembly of the first rolling mechanism 10. The second CCD detection mechanism 140 is disposed on the rolling frame 11 of the second rolling mechanism 30, and the second CCD detection mechanism 140 is located below the roller assembly of the second rolling mechanism 10.

[0058] The first CCD detection mechanism 130 and the second CCD detection mechanism 140 both include a detection support roller 1301 and a CCD camera 1302. The two ends of the detection support roller 1301 of the first CCD detection mechanism 130 are rotatably arranged on the rolling frame 11 of the first rolling mechanism 10 through two support roller bearing seats, and the two ends of the detection support roller 1301 of the second CCD detection mechanism 140 are rotatably arranged on the rolling frame 11 of the second rolling mechanism 30 through two support roller bearing seats. The detection support roller 1301 is located to the right of the second rolling roller 14. The detection support roller 1301 of the first CCD detection mechanism 130 is used to support the current collector compounded with the first electrode membrane, and the detection support roller 1301 of the second CCD detection mechanism 140 is used to support the dry electrode. The CCD camera 1302 of the first CCD detection mechanism 130 is arranged on the roller pressing frame 11 of the first roller pressing mechanism 10 through a bracket, and the CCD camera 1302 of the second CCD detection mechanism 140 is arranged on the roller pressing frame 11 of the second roller pressing mechanism 30 through a bracket. The CCD camera 1302 is located above the detection support roller 1301, and the lens of the CCD camera 1302 is opposite to the detection support roller 1301. In this embodiment, the detection support roller 1301 of the first CCD detection mechanism 130 corresponds to the first process correction mechanism 110, the CCD camera 1302 of the first CCD detection mechanism 130 is arranged to be tilted upward and corresponds to the space between the detection support roller 1301 of the first CCD detection mechanism 130 and the end of the rolling frame 11 close to the unwinding mechanism 20, the detection support roller 1301 of the second CCD detection mechanism 140 corresponds to the first second rolling roller 122 of the second rolling mechanism 30, and the CCD camera 1302 of the second CCD detection mechanism 140 is arranged to be tilted upward and corresponds to the space between the detection support roller 1301 of the second CCD detection mechanism 140 and the end of the rolling frame 11 away from the unwinding mechanism 20. The CCD camera 1302 of the first CCD detection mechanism 130 is used to photograph the current collector compounded with the first electrode membrane. After the photographed picture is transmitted to the image processing system, the current collector compounded with the first electrode membrane is processed and analyzed by the image processing system, so that it can be obtained whether the two sides of the first electrode membrane and the two sides of the current collector are aligned and whether the first electrode membrane has defects, thereby realizing the detection of whether the two sides of the first electrode membrane and the two sides of the current collector are aligned and whether the first electrode membrane has defects. The CCD camera 1302 of the second CCD detection mechanism 140 is used to photograph the dry electrode. After the photographed picture is transmitted to the image processing system, the dry electrode is processed and analyzed by the image processing system, so that it can be obtained whether the two sides of the second electrode membrane and the two sides of the current collector are aligned and whether the second electrode membrane has defects, thereby realizing the detection of whether the two sides of the second electrode membrane and the two sides of the current collector are aligned and whether the second electrode membrane has defects.

[0059] Combination Figure 4 As shown, the unwinding mechanism 20 includes an unwinding frame 21, an unwinding shaft, an unwinding motor and an unwinding roller 22.

[0060] The two ends of the unwinding shaft are rotatably arranged on the unwinding frame 21 through two unwinding bearing seats. The unwinding shaft is used to unwind the current collector. The unwinding motor is arranged on the unwinding frame 21, one end of the unwinding shaft is connected to the output end of the unwinding motor, and the unwinding motor is used to drive the unwinding shaft to rotate.

[0061] The unwinding roller 22 is located below the unwinding shaft, and is used to support the current collector compounded with the first electrode membrane. The two ends of the unwinding roller 22 are rotatably arranged on the unwinding frame 21 through two unwinding roller bearing seats. In this embodiment, there are two unwinding rollers 22, and the two unwinding rollers 22 are arranged side by side. It can be understood that the number of unwinding rollers 22 does not constitute a limitation on the present invention.

[0062] Combination Figure 6 As shown, the winding mechanism 40 includes a winding frame 41, a winding shaft and a winding motor. The two ends of the winding shaft are rotatably arranged on the winding frame 41 through two winding bearing seats, and the winding shaft is used to wind the dry electrode. The winding motor is arranged on the winding frame 41, and one end of the winding shaft is connected to the output end of the winding motor, and the winding motor is used to drive the winding shaft to rotate.

[0063] Combination Figures 7 to 9 As shown, the calendering mechanism 50 includes a calendering frame 51, an upper calendering roller 53, a lower calendering roller 52, two jacking driving members arranged front and back oppositely, an upper calendering roller driving assembly and a lower calendering roller driving assembly. The outer peripheries of both ends of the upper calendering roller 53 are respectively sleeved with two upper calendering bearing seats, and the two upper calendering bearing seats are respectively fixedly arranged on the calendering frame 51. The outer peripheries of both ends of the lower calendering roller 52 are respectively sleeved with two lower calendering bearing seats, and the two lower calendering bearing seats are respectively slidably arranged on the calendering frame 51. The upper calendering roller 53 and the lower calendering roller 52 are arranged oppositely up and down with a calendering gap between them. The two lower calendering bearing seats are respectively located below the two upper calendering bearing seats. Two jacking driving members are respectively arranged on the calendering frame 51 and respectively located below the two lower calendering bearing seats. The output ends of the two jacking driving members are respectively connected to the two lower calendering bearing seats. The two jacking driving members are respectively used to drive the two lower calendering bearing seats to move up and down, thereby driving the lower calendering roller 52 to move up and down. Through the upward movement of the lower calendering roller 52, upward pressure can be applied to provide calendering pressure. In actual application, the rotation direction of the lower calendering roller 52 is opposite to that of the upper calendering roller 51. The jacking driving member is a hydraulic cylinder or an electric cylinder.

[0064] The upper calendering roller drive assembly and the lower calendering roller drive assembly are both arranged on the calendering frame 51, one end of the upper calendering roller 53 is connected to the upper calendering roller drive assembly, and the upper calendering roller drive assembly is used to rotate the upper calendering roller 53, and one end of the lower calendering roller 52 is connected to the lower calendering roller drive assembly, and the lower calendering roller drive assembly is used to drive the lower calendering roller 51 to rotate. Specifically, the upper calendering roller drive assembly includes an upper calendering reducer and an upper calendering motor, the upper calendering reducer is arranged on the calendering frame 51, the upper calendering motor is arranged on the upper calendering reducer, the output end of the upper calendering motor is connected to the input end of the upper calendering reducer, the output end of the upper calendering reducer is connected to one end of the upper calendering roller 53, and the upper calendering motor is used to drive the upper calendering roller 53 to rotate through the upper calendering reducer. The lower calendering roller driving assembly includes a lower calendering reducer and a lower calendering motor. The lower calendering reducer is arranged on the calendering frame 51, and the lower calendering motor is arranged on the lower calendering reducer. The output end of the lower calendering motor is connected to the input end of the lower calendering reducer, and the output end of the lower calendering reducer is connected to one end of the lower calendering roller 52. The lower calendering motor is used to drive the lower calendering roller 52 to rotate through the lower calendering reducer.

[0065] In this embodiment, a first calendering roller 54 and a second calendering roller 55 are respectively provided on the left and right sides of the calendering gap. Both ends of the first calendering roller 54 and the second calendering roller 55 are rotatably arranged on the calendering frame 51 through two calendering roller bearing seats. The first calendering roller 54 and the second calendering roller 55 are respectively used to support the dry electrode. The first calendering roller 54 and the second calendering roller 55 can ensure that the dry electrode passes through the calendering gap in the horizontal direction, so that the upper calendering roller 53 and the lower calendering roller 52 can calender the dry electrode.

[0066] The front stretching mechanism 150 and the rear stretching mechanism 160 are arranged symmetrically, and the lower calendering roller 52 and the upper calendering roller 53 are located between the front stretching mechanism 150 and the rear stretching mechanism 160. The front stretching mechanism 150 and the rear stretching mechanism 160 both include a tension isolation assembly, a tension swing roller assembly and a tension detection roller, and the tension isolation assembly, the tension swing roller assembly and the tension detection roller are sequentially arranged in a direction close to the lower calendering roller 52 and the upper calendering roller 53. The tension isolation assembly is used to isolate the tension of the dry electrode, the tension detection roller is used to detect the tension of the dry electrode, and the tension swing roller assembly is used to adjust the tension of the dry electrode according to the detected tension value of the dry electrode. The tension of the dry electrode is isolated and adjusted by the front stretching mechanism 150 and the rear stretching mechanism 160, respectively, so as to facilitate the calendering of the dry electrode by the calendering mechanism 50.

[0067] Specifically, the tension partition assembly includes a partition steel roller 1501, a partition rubber pressure roller 1502 opposite to the partition steel roller 1501, two partition connecting shafts arranged front and back oppositely, two partition swing arms 1503 arranged front and back oppositely, and two partition cylinders 1504 arranged front and back oppositely.

[0068] The two ends of the partition steel roller 1501 are rotatably arranged on the calender frame 51 through two partition steel roller bearing seats. The partition rubber pressure roller 1502 is located at the upper left of the partition steel roller 1501, and the partition rubber pressure roller 1502 is rotatably arranged between the two partition swing arms 1503. In this embodiment, the center positions of the two partition swing arms 1503 are respectively provided with first mounting holes, and the two ends of the partition rubber pressure roller 1502 are respectively rotatably arranged in the first mounting holes of the two partition swing arms 1503 through partition bearings. The two partition connecting shafts are located between the partition rubber pressure roller 1502 and the lower calendering roller 52 and the upper calendering roller 53, and the first ends of the two partition connecting shafts are respectively arranged on the calender frame 51. The partition swing arm 1503 is arranged to be inclined upward toward the direction close to the lower calendering roller 52 and the upper calendering roller 53. The first ends of the two partition swing arms 1503 are respectively rotatably mounted on the outer peripheries of the second ends of the two partition connecting shafts. In this embodiment, the first end of the partition swing arm 1503 is provided with a second mounting hole. The two partition swing arms 1503 are respectively rotatably mounted on the outer peripheries of the second ends of the two partition connecting shafts through their respective second mounting holes. A swing arm bearing is provided in the second mounting hole. The swing arm bearing is mounted on the outer periphery of the second end of the corresponding partition connecting shaft to provide rotation support for the corresponding partition swing arm 1503. The two partition cylinders 1504 are respectively arranged on the calender frame 51 and respectively located above the two partition swing arms 1503. The two partition cylinders 1504 and the two partition swing arms 1503 are respectively arranged vertically. The partition rubber pressing roller 1502 is located between the output ends of the two partition cylinders 1504 and the first ends of the two partition swing arms 1503. The output ends of the two partition cylinders 1504 are respectively connected to the two partition swing arms 1503. The two partition cylinders 1504 are respectively used to drive the two The partition swing arm 1503 rotates left and right around the axis of the corresponding partition connecting shaft, thereby driving the partition rubber pressure roller 1502 to move away from or closer to the partition steel roller 1501. In actual application, the dry electrode bypasses the top of the partition steel roller 1501 and moves toward the partition steel roller 1501 through the partition rubber pressure roller 1502, so that the dry electrode can be pressed against the partition steel roller 1501 through the partition rubber pressure roller 1502, thereby isolating the tension of the dry electrode.

[0069] The tension swing roller assembly includes a rotating roller 1505, two swing roller arms 1506 arranged front and back oppositely, a swing roller 1507 and a swing roller cylinder. The two ends of the rotating roller 1505 are rotatably arranged in two calendering mounting holes of the calendering frame 51 through two rotating roller bearings. The first ends of the two swing roller arms 1506 are respectively fixedly sleeved on the outer periphery of the rotating roller 1505. The swing roller 1507 is located below the rotating roller 1505, and the swing roller 1507 is rotatably arranged between the second ends of the two swing roller arms 1506. In this embodiment, the second end of the swing roller arm 1506 is provided with a swing arm through hole, and the two ends of the swing roller 1507 are rotatably arranged in the swing arm through holes of the two swing roller arms 1506 through two swing roller bearings. The swing roller cylinder is arranged on the calendering frame 51, and the output end of the swing roller cylinder is connected to one end of the rotating roller 1505. The swing roller cylinder is used to drive the rotating roller 1505 to rotate, thereby driving the two swing roller swing arms 1506 to swing left and right around the axis of the rotating roller 1505, thereby driving the swing roller 1507 to swing left and right around the axis of the rotating roller 1505.

[0070] Combination Figures 10 to 12 As shown, the first traction mechanism 60 and the second traction mechanism 70 both include a traction frame 61, a traction steel roller 62, a traction steel roller driving assembly, a traction rubber pressure roller 63 opposite to the traction steel roller 62, two traction connecting shafts arranged front and back oppositely, two traction swing arms 64 arranged front and back oppositely, and two traction cylinders 65. The two ends of the traction steel roller 62 are rotatably arranged on the traction frame 61 through two traction steel roller bearing seats respectively. The traction steel roller driving assembly is arranged on the traction frame 61, one end of the traction steel roller 62 is connected to the traction steel roller driving assembly, and the traction steel roller driving assembly is used to drive the traction steel roller 62 to rotate. Specifically, the traction steel roller driving assembly includes a traction reducer and a traction motor, the traction reducer is arranged on the traction frame 61, the traction motor is arranged on the traction reducer, the output end of the traction motor is connected to the input end of the traction reducer, the output end of the traction reducer is connected to one end of the traction steel roller 62, and the traction motor is used to drive the traction steel roller 62 to rotate through the traction reducer.

[0071] The traction rubber pressure roller 63 is located at the upper left of the traction steel roller 62. The traction rubber pressure roller 63 is rotatably arranged between the first ends of the two traction swing arms 64. In this embodiment, the traction swing arm 64 is L-shaped and is arranged upwardly inclined in the direction away from the first rolling mechanism 10. The first end of the traction swing arm 64 is provided with a traction mounting hole. The two ends of the traction rubber pressure roller 63 are rotatably arranged in the traction mounting holes of the two traction swing arms 64 through two traction bearings. The first ends of the two traction connecting shafts are respectively arranged on the traction frame 61. The two traction swing arms 64 are respectively rotatably sleeved on the outer peripheries of the second ends of the two traction connecting shafts. In this embodiment, a traction through hole is provided at the center position of the traction swing arm 64. The two traction swing arms 64 are respectively rotatably sleeved on the outer peripheries of the second ends of the two traction connecting shafts through their respective traction through holes. A swing arm bearing is provided in the traction through hole. The swing arm bearing is sleeved on the outer periphery of the corresponding traction connecting shaft to provide rotation support for the corresponding traction swing arm 64. The two traction cylinders 65 are respectively arranged on the traction frame 61 and are respectively located on the right side of the two traction swing arms 64. The two traction cylinders 65 are respectively arranged vertically with the two traction swing arms 64. The two traction connecting shafts are respectively located below the two traction cylinders 65 and are respectively located on the right side of the traction rubber pressure roller 63. The output ends of the two traction cylinders 65 are respectively connected to the two traction swing arms 64. The two traction cylinders 65 are respectively used to drive the two traction swing arms 64 to rotate left and right around the axis of the corresponding traction connecting shaft, thereby driving the traction rubber pressure roller 63 to move away from or close to the traction steel roller 62. In actual application, the current collector compounded with the first electrode membrane is pulled from the top of the traction steel roller 62 of the first traction mechanism 60. The bypassing and dry electrode bypasses the traction steel roller 62 of the second traction mechanism 70, and moves toward the traction steel roller 62 through the traction rubber pressure roller 63 of the first traction mechanism 60, so that the collector compounded with the first electrode membrane can be pressed on the traction steel roller 62. In this way, the traction rubber pressure roller 63 and the traction steel roller 62 of the first traction mechanism 60 can press, clamp and pull the collector compounded with the first electrode membrane. The traction rubber pressure roller 63 of the second traction mechanism 70 moves toward the traction steel roller 62, so that the dry electrode can be pressed on the traction steel roller 62. In this way, the traction rubber pressure roller 63 and the traction steel roller 62 of the second traction mechanism 70 can press, clamp and pull the dry electrode.

[0072] The first traction mechanism 60 further includes a traction roller 66, which is located above the traction steel roller 62 and the traction rubber pressure roller 63 of the first traction mechanism 60. The two ends of the traction roller 66 are rotatably arranged on the traction frame 61 of the first traction mechanism 60 through two traction roller bearing seats, and the traction roller 66 is used to support the current collector. In this embodiment, there are two traction rollers 66, and the two traction rollers 66 are arranged side by side. It can be understood that the number of traction rollers 66 does not constitute a limitation to the present invention.

[0073] Through the above structure, in actual application, the electrode powder is first delivered from the top of the film-forming gap of the first rolling mechanism 10 to the film-forming gap through the automatic feeding mechanism 300 located on the left side of the first rolling mechanism 10, and the first roller 121 and the first second roller 122 of the first rolling mechanism 10 rotate in opposite directions, so that the electrode powder can be rolled into the first electrode membrane. Then the first electrode membrane bypasses from the bottom of the first second roller 122 and enters the first thinning gap, and the first second roller 122 and the second second roller 122 rotate in opposite directions, so that the first electrode membrane can be rolled, so that the first electrode membrane can be thinned for the first time. Then the first electrode membrane that has undergone the first thinning treatment bypasses from the top of the second second roller 122 and enters the second thinning gap, and the second second roller 122 and the third second roller 122 rotate in opposite directions, so that the first electrode membrane can be rolled, so that the first electrode membrane can be thinned for the second time. Then, the first electrode membrane that has undergone the second thinning process bypasses from below the third second roller 122 and enters the third thinning gap, and the third second roller 122 and the fourth second roller 122 rotate in opposite directions, so that the first electrode membrane can be rolled, thereby achieving the third thinning process for the first electrode membrane. Then, the first electrode membrane that has undergone the third thinning process bypasses from above the fourth second roller 122 and enters the composite gap. In this process, the unwinding shaft is driven to rotate by the unwinding motor, so that the current collector can be unwound by the unwinding shaft, and the unwound current collector moves to the left. Specifically, the current collector passes over the top of the traction roller 66 located on the right of the first traction mechanism 60, passes under the traction roller 66 located on the left, and then passes over the top of the two correction rollers 1103 of the first process correction mechanism 110. When the current collector deviates forward, for example, the two correction rollers 1103 are driven backward by the correction linear motor 1101, thereby driving the current collector to move backward, thereby achieving correction of the current collector. When the current collector deviates backward, for example, the two correction rollers 1103 are driven forward by the correction linear motor 1101, thereby driving the current collector to move forward, thereby achieving correction of the current collector. Then the current collector passes around the left side of the first rolling roller 13, enters the composite gap and is located on the right side of the first electrode membrane, and is rolled by the fourth second roller 122 and the third roller 123 in opposite directions, so that the first electrode membrane and the current collector can be composited on one side of the current collector.Afterwards, the current collector compounded with the first electrode membrane comes out of the compound gap and turns back to the right, first bypassing the left side of the second roller 14 of the first rolling mechanism 10 and bypassing the top of the detection support roller 1301 of the first CCD detection mechanism 130. At this time, the first electrode membrane is located above the current collector. The CCD camera 1302 of the first CCD detection mechanism 130 can be used to photograph the current collector compounded with the first electrode membrane to detect whether the two sides of the first electrode membrane and the two sides of the current collector are aligned and to detect whether the first electrode membrane has defects. If the detection is not aligned or the detection is defective, it is necessary to stop the machine for adjustment to ensure the quality of the dry electrode.

[0074] Then the current collector compounded with the first electrode membrane passes over the traction steel roller 62 of the first traction mechanism 60, and the current collector compounded with the first electrode membrane can be pressed onto the traction steel roller 62 by the traction rubber pressure roller 63. Under the rotation of the traction steel roller 62, the current collector compounded with the first electrode membrane can be pressed, clamped and pulled by the traction steel roller 62 and the traction rubber pressure roller 63.

[0075] Then the current collector compounded with the first electrode membrane bypasses from below the two unwinding rollers 22 of the unwinding mechanism 20, and then passes through the first surface density thickness measuring integrated machine 80, through which the thickness of the current collector compounded with the first electrode membrane can be detected. Then the current collector compounded with the first electrode membrane bypasses from above the two deviation correction rollers 1103 of the second process deviation correction mechanism 120. When the current collector compounded with the first electrode membrane deviates forward, for example, the two deviation correction rollers 1103 are driven backward by the deviation correction linear motor 1101, so that the current collector compounded with the first electrode membrane can be driven to move backward, so that the current collector compounded with the first electrode membrane can be corrected. When the current collector compounded with the first electrode membrane deviates backward, for example, the two deviation correction rollers 1103 are driven forward by the deviation correction linear motor 1101, so that the current collector compounded with the first electrode membrane can be driven to move forward, so that the current collector compounded with the first electrode membrane can be corrected. Then the current collector compounded with the first electrode membrane bypasses the right side of the first roller 13 of the second rolling mechanism 30 and enters the compound gap. In this process, the electrode powder is delivered from the top of the film-forming gap of the second rolling mechanism 30 to the film-forming gap by the automatic feeding mechanism 300 located on the right side of the second rolling mechanism 30, and the first roller 121 and the first second roller 122 of the second rolling mechanism 30 rotate in opposite directions, so that the electrode powder can be rolled into the second electrode membrane. Then the second electrode membrane bypasses the bottom of the first second roller 122 and enters the first thinning gap, and the first second roller 122 and the second second roller 122 rotate in opposite directions, so that the second electrode membrane can be rolled, so that the first thinning treatment of the second electrode membrane can be achieved. Then, the second electrode membrane that has undergone the first thinning treatment bypasses from above the second second roller 122 and enters the second thinning gap, and the second second roller 122 and the third second roller 122 rotate in opposite directions, so that the second electrode membrane can be rolled, thereby achieving the second thinning treatment of the second electrode membrane. Then, the second electrode membrane that has undergone the second thinning treatment bypasses from below the third second roller 122 and enters the third thinning gap, and the third second roller 122 and the fourth second roller 122 rotate in opposite directions, so that the second electrode membrane can be rolled, thereby achieving the third thinning treatment of the second electrode membrane.Then, the second electrode membrane that has undergone the third thinning process bypasses from above the fourth second roller 122 and enters the composite gap. At this time, the current collector composited with the first electrode membrane is located on the left side of the second electrode membrane and the current collector is located between the first electrode membrane and the second electrode membrane. The fourth second roller 122 and the third roller 123 rotate in opposite directions, so that the second electrode membrane and the current collector composited with the first electrode membrane can be rolled, so that the second electrode membrane is composited on the other side of the current collector, thereby forming a dry electrode. Then the dry electrode bypasses from the left side of the second rolling roller 14 of the second rolling mechanism 30 and bypasses above the detection support roller 1301 of the second CCD detection mechanism 140. At this time, the second electrode membrane is located above the current collector. The CCD camera 1302 of the second CCD detection mechanism 140 can be used to shoot the dry electrode to detect whether the two sides of the second electrode membrane and the two sides of the current collector are aligned and whether the second electrode membrane is defective. If the detection is not aligned or the detection is defective, it is necessary to stop and adjust to ensure the quality of the dry electrode.

[0076] Then the dry electrode passes through the second surface density thickness measuring integrated machine 90, and the thickness of the dry electrode can be detected by the second surface density thickness measuring integrated machine 90 before the dry electrode is compacted by the calendering mechanism 50. Then the dry electrode passes over the traction steel roller 62 of the second traction mechanism 70, and the composite dry electrode can be pressed on the traction steel roller 62 by the traction rubber pressing roller 63. Under the rotation of the traction steel roller 62, the traction steel roller 62 and the traction rubber pressing roller 63 can press, clamp and traction the dry electrode.

[0077] Then the dry electrode bypasses the partition steel roller 1501 of the front stretching mechanism 150, and the dry electrode can be pressed against the partition steel roller 1501 by the partition rubber pressure roller 1502, so that the tension of the dry electrode can be isolated. Then the dry electrode bypasses the right side of the swing roller 1507 of the tension swing roller assembly of the front stretching mechanism 150, bypasses the left side of the rotating roller 1505, and bypasses the top of the tension detection roller. The tension of the dry electrode can be detected by the tension detection roller, and the swing roller cylinder drives the swing roller 1507 to swing left or right according to the detected tension value of the dry electrode, so that the tension of the dry electrode can be adjusted to prevent the dry electrode from being too tight or too loose. Then the dry electrode enters the calendering gap, and the lower calendering roller 52 and the upper calendering roller 53 rotate in opposite directions, so that the dry electrode can be calendered to compact the dry electrode, and the lower calendering roller 52 is driven to move upward by two lifting driving members, so that upward pressure can be applied to provide calendering pressure. The calendered dry electrode then passes through the third surface density thickness measuring integrated machine 100, and the thickness of the dry electrode can be detected by the third surface density thickness measuring integrated machine 100 after the dry electrode is compacted by the calendering mechanism 50. The dry electrode is then rolled up on the winding shaft, and the winding shaft is driven to rotate by the winding motor, so that the dry electrode can be rolled up by the winding shaft.

[0078] The present invention is provided with a first rolling mechanism 10, an unwinding mechanism 20, a second rolling mechanism 30, a winding mechanism 40, a calendering mechanism 50 and a first traction mechanism 60, and the first rolling mechanism 10, the first traction mechanism 60, the unwinding mechanism 20, the second rolling mechanism 30, the calendering mechanism 50 and the winding mechanism 40 are arranged in sequence from left to right. After the current collector is unwound by the unwinding mechanism 20, the current collector is firstly carried from right to left, first passes through the first traction mechanism 60, and the current collector can be supported by the first traction mechanism 60, and then passes through the first rolling mechanism 10, and the electrode powder can be rolled into a first electrode membrane by the first rolling mechanism 10, the first electrode membrane is thinned, and the first electrode membrane after the thinning treatment is composited on one side of the current collector, and then the current collector composited with the first electrode membrane is turned back to the right for conveying, first passes through the first traction mechanism 60, and the current collector composited with the first electrode membrane can be pulled by the first traction mechanism 60, and then passes through the unwinding mechanism Structure 20, the unwinding mechanism 20 can support the collector compounded with the first electrode membrane, and then pass through the second rolling mechanism 30, the electrode powder can be rolled into the second electrode membrane, the second electrode membrane can be thinned, and the thinned second electrode membrane can be compounded on the other side of the collector to form a dry electrode, and then the dry electrode first passes through the calendering mechanism, the dry electrode can be calendered by the calendering mechanism 50, and then it is rolled up by the rolling mechanism 40. Compared with the prior art, the unrolled current collector does not need to pass over the automatic feeding equipment 300 located on the left side of the first rolling mechanism 10, so that the belt height of the current collector will not be very high, thereby avoiding the risk of wrinkles in the current collector. At the same time, the calendering mechanism 50 can be used to calender the dry electrode, so that the dry electrode can be compacted and thinned, thereby improving the energy density of the dry electrode. In this way, the calendering of the dry electrode does not need to be completed by other calendering equipment, which saves production time and improves production efficiency.

[0079] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A folding double-sided dry electrode production device, comprising a first rolling mechanism (10), a second rolling mechanism (30) and a winding mechanism (40), wherein the first rolling mechanism (10) is used to roll the electrode powder into a first electrode membrane, thin the first electrode membrane and composite the thinned first electrode membrane on one side of a current collector, the second rolling mechanism (30) is used to roll the electrode powder into a second electrode membrane, thin the second electrode membrane and composite the thinned second electrode membrane on the other side of a current collector to form a dry electrode, and the winding mechanism (40) is used to roll the dry electrode, characterized in that: The invention also comprises an unwinding mechanism (20), a calendering mechanism (50) and a first traction mechanism (60), wherein the unwinding mechanism (20) is used to unwind the current collector and to support the current collector composited with the first electrode membrane, the calendering mechanism (50) is used to calender the dry electrode, the first traction mechanism (60) is used to pull the current collector composited with the first electrode membrane and to support the current collector, and the first rolling mechanism (10), the first traction mechanism (60), the unwinding mechanism (20), the second rolling mechanism (30), the calendering mechanism (50) and the winding mechanism (40) are arranged in sequence from left to right, and the unwinding mechanism (20) is used to unwind the current collector and to support the current collector composited with the first electrode membrane. The current collector unwound by the mechanism (20) passes through the first traction mechanism (60) and the first rolling mechanism (10) from right to left in sequence. After the first electrode membrane that has undergone a thinning process is composited on one side of the current collector by the first rolling mechanism (10), the current collector composited with the first electrode membrane passes through the first traction mechanism (60), the unwinding mechanism (20) and the second rolling mechanism (30) from left to right in sequence. After the second electrode membrane that has undergone a thinning process is composited on the other side of the current collector by the second rolling mechanism (30) to form a dry electrode, the dry electrode first passes through the calendering mechanism (50) and is then rolled up by the rolling mechanism (40).

2. The folding double-sided dry electrode production equipment according to claim 1, characterized in that: The first rolling mechanism (10) and the second rolling mechanism (30) both comprise a rolling frame (11) and a roller assembly, wherein the roller assembly comprises a first roller (121), a plurality of second rollers (122) and a third roller (123), wherein both ends of the first roller (121), the second roller (122) and the third roller (123) are rotatably arranged on the rolling frame (11), respectively; the first roller (121), the plurality of second rollers (122) and the third roller (123) of the first rolling mechanism (10) are arranged in sequence from left to right; the first roller (121), the plurality of second rollers (122) and the third roller (123) of the second rolling mechanism (30) are arranged in sequence from right to left; a film forming gap is provided between the first roller (121) and an adjacent second roller (122); and two adjacent second rollers (121) and the third roller (123) are spaced apart from each other. 22), there is a thinning gap between the third roller (123) and the adjacent second roller (122), and there is a composite gap between the film-forming gap and the width of the plurality of thinning gaps gradually decreases in the direction approaching the composite gap, one end of the first roller (121) is connected to a first roller drive assembly, the first roller drive assembly is arranged on the rolling frame (11) and is used to drive the first roller (121) to rotate, one end of the second roller (122) is connected to a second roller drive assembly, the second roller drive assembly is arranged on the rolling frame (11) and is used to drive the second roller (122) to rotate, and one end of the third roller (123) is connected to a third roller drive assembly, the third roller drive assembly is arranged on the rolling frame (11) and is used to drive the third roller (123) to rotate.

3. The folding double-sided dry electrode production equipment according to claim 2, characterized in that: The invention also comprises a first process deviation correction mechanism (110) and a second process deviation correction mechanism (120), wherein the first process deviation correction mechanism (110) is arranged on the rolling frame (11) of the first rolling mechanism (10), the first process deviation correction mechanism (110) is located to the right of the third roller (123) of the first rolling mechanism (10) and above the third roller (123) of the first rolling mechanism (10), and the second process deviation correction mechanism (120) is arranged on the rolling frame (11) of the second rolling mechanism (30), the second process deviation correction mechanism (120) is located to the left of the third roller (123) of the second rolling mechanism (30) and above the third roller (123) of the second rolling mechanism (30).

4. The folding double-sided dry electrode production equipment according to claim 3, characterized in that: The first process deflection correction mechanism (110) and the second process deflection correction mechanism (120) both comprise a deflection correction linear motor (1101), a deflection correction mounting plate (1102) arranged at the top of the deflection correction linear motor (1101), and two deflection correction rollers (1103); the deflection correction linear motor (1101) of the first process deflection correction mechanism (1100) is arranged on a rolling frame (11) of the first rolling mechanism (10); the deflection correction linear motor (1101) of the second process deflection correction mechanism (120) is arranged on a rolling frame (11) of the second rolling mechanism (30); the two deflection correction rollers (1103) are arranged side by side in a left-right manner; the two ends of the deflection correction roller (1103) are respectively rotatably arranged at the top of the deflection correction mounting plate (1102); and the deflection correction linear motor (1101) is used for driving the deflection correction mounting plate (1102) to move forward and backward.

5. The folding double-sided dry electrode production equipment according to claim 2, characterized in that: The invention also comprises a first CCD detection mechanism (130) and a second CCD detection mechanism (140), wherein the first CCD detection mechanism (130) is arranged on a rolling frame (11) of the first rolling mechanism (10), and the first CCD detection mechanism (130) is located below the roller assembly of the first rolling mechanism (10); the second CCD detection mechanism (140) is arranged on a rolling frame (11) of the second rolling mechanism (30), and the second CCD detection mechanism (140) is located below the roller assembly of the second rolling mechanism (30); the first CCD detection mechanism (130) and the second CCD detection mechanism (140) both comprise a detection support roller (1301) and a CCD camera (1302); the detection support roller ( The two ends of the detection support roller (1301) are rotatably arranged on the roller pressing frame (11) of the first roller pressing mechanism (10), the two ends of the detection support roller (1301) of the second CCD detection mechanism (140) are rotatably arranged on the roller pressing frame (11) of the second roller pressing mechanism (30), the CCD camera (1302) of the first CCD detection mechanism (130) is arranged on the roller pressing frame (11) of the first roller pressing mechanism (10), the CCD camera (1302) of the second CCD detection mechanism (140) is arranged on the roller pressing frame (11) of the second roller pressing mechanism (30), the CCD camera (1302) is located above the detection support roller (1301), and the lens of the CCD camera (1302) is opposite to the detection support roller (1301).

6. The folding double-sided dry electrode production equipment according to claim 1, characterized in that: The calendering mechanism (50) comprises a calendering frame (51), a lower calendering roller (52), an upper calendering roller (53), two lifting drive members, an upper calendering roller drive assembly and a lower calendering roller drive assembly. The outer peripheries of both ends of the upper calendering roller (53) are respectively sleeved with two upper calendering bearing seats, and the two upper calendering bearing seats are respectively fixedly arranged on the calendering frame (51). The outer peripheries of both ends of the lower calendering roller (52) are respectively sleeved with two lower calendering bearing seats, and the two lower calendering bearing seats are respectively slidably arranged on the calendering frame (51). The upper calendering roller (53) and the lower calendering roller (52) are arranged opposite to each other in an upper and lower direction and a calendering gap is provided between the two lower calendering bearing seats. Below the calendering machine frame (51), two lifting drive members are respectively arranged on the calendering machine frame (51) and are respectively located below the two lower calendering bearing seats, the output ends of the two lifting drive members are respectively connected to the two lower calendering bearing seats, and the two lifting drive members are respectively used to drive the two lower calendering bearing seats to move up and down, the upper calendering roller drive assembly and the lower calendering roller drive assembly are both arranged on the calendering machine frame (51), one end of the upper calendering roller (53) is connected to the upper calendering roller drive assembly, and the upper calendering roller drive assembly is used to rotate the upper calendering roller (53), and one end of the lower calendering roller (52) is connected to the lower calendering roller drive assembly, and the lower calendering roller drive assembly is used to drive the lower calendering roller (52) to rotate.

7. The folding double-sided dry electrode production equipment according to claim 6, characterized in that: It also includes a front stretching mechanism (150) and a rear stretching mechanism (160), wherein the front stretching mechanism (150) and the rear stretching mechanism (160) are arranged symmetrically on the left and right, and the lower calendering roller (52) and the upper calendering roller (53) are located between the front stretching mechanism (150) and the rear stretching mechanism (160), and the front stretching mechanism (150) and the rear stretching mechanism (160) both include a tension isolation assembly, a tension swing roller assembly and a tension detection roller, and the tension isolation assembly, the tension swing roller assembly and the tension detection roller are arranged in sequence along the direction close to the lower calendering roller (52) and the upper calendering roller (53).

8. The folding double-sided dry electrode production equipment according to claim 1, characterized in that: The invention also comprises a second traction mechanism (70) arranged between the second rolling mechanism (30) and the calendering mechanism (50); the first traction mechanism (60) and the second traction mechanism (70) both comprise a traction frame (61), a traction steel roller (62), a traction steel roller driving assembly, a traction rubber pressure roller (63) located above the traction steel roller (62) and opposite to the traction steel roller (62), two traction connecting shafts arranged opposite to each other in the front and back direction, two traction swing arms (64) arranged opposite to each other in the front and back direction, and two traction cylinders (65); the two ends of the traction steel roller (62) are rotatably arranged on the traction frame (61); the traction rubber pressure roller (63) is rotatably arranged between the first ends of the two traction swing arms (64); the first ends of the two traction connecting shafts are respectively arranged on the traction frame (61); the two traction swing arms (64) are respectively arranged The two traction cylinders (65) are rotatably sleeved on the outer peripheries of the second ends of the two traction connection shafts. The two traction cylinders (65) are respectively arranged on the traction frame (61) and are respectively located on the right side of the two traction swing arms (64). The two traction cylinders (65) are respectively arranged vertically with the two traction swing arms (64). The output ends of the two traction cylinders (65) are respectively connected to the two traction swing arms (64). The two traction cylinders (65) are respectively used to drive the two traction swing arms (64) to rotate left and right around the axis of the corresponding traction connection shaft, thereby driving the traction rubber pressure roller (63) to move in a direction away from or close to the traction steel roller (62). The traction steel roller driving assembly is arranged on the traction frame (61). One end of the traction steel roller (62) is connected to the traction steel roller driving assembly. The traction steel roller driving assembly is used to drive the traction steel roller (62) to rotate.

9. The folding double-sided dry electrode production equipment according to claim 8, characterized in that: The first traction mechanism (60) further comprises a traction roller (66), the traction roller (66) being located above the traction steel roller (62) and the traction rubber pressure roller (63) of the first traction mechanism (60), and the two ends of the traction roller (66) being respectively rotatably arranged on the traction frame (61) of the first traction mechanism (60); the unwinding mechanism (20) comprises an unwinding frame (21), an unwinding shaft, an unwinding motor and an unwinding roller (22), the two ends of the unwinding shaft being respectively rotatably arranged on the unwinding frame (21), the unwinding motor being arranged on the unwinding frame (21), one end of the unwinding shaft being connected to the output end of the unwinding motor, the unwinding motor being used for driving the unwinding shaft to rotate, the unwinding roller (22) being located below the unwinding shaft, and the two ends of the unwinding roller (22) being respectively rotatably arranged on the unwinding frame (21).

10. The folding double-sided dry electrode production equipment according to claim 8, characterized in that: The invention also comprises a first surface density thickness measuring integrated machine (80), a second surface density thickness measuring integrated machine (90) and a third surface density thickness measuring integrated machine (100), wherein the first surface density thickness measuring integrated machine (80) is arranged between the unwinding mechanism (20) and the second rolling mechanism (30), or is arranged between the first traction mechanism (60) and the second rolling mechanism (30) and is located in the supporting platform, the second surface density thickness measuring integrated machine (90) is arranged between the second rolling mechanism (30) and the second traction mechanism (70), and the third surface density thickness measuring integrated machine (100) is arranged between the calendering mechanism (50) and the winding mechanism (40).

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