Lithium battery aluminum plastic film and preparation process thereof

Abstract

The invention discloses a lithium battery aluminum-plastic film and a preparation process thereof, and relates to the technical field of aluminum-plastic films, the aluminum-plastic film comprises a plastic film, an aluminum foil, an adhesive and an anti-corrosion coating, the aluminum-plastic film is formed by mutually attaching a roll of plastic film and a roll of aluminum foil, the attaching position of the plastic film and the aluminum foil is adhered by using the adhesive, and the anti-corrosion coating is formed by adhering the plastic film and the aluminum foil. An anti-corrosion coating is sprayed after a plastic film and an aluminum foil are attached to each other, an adhesive is a mixture of modified polyester polyol, polyether polyol, a polyisocyanate monomer, epoxy resin, a chain extender, a catalyst and an auxiliary, the plastic film is composed of multiple layers of polypropylene, the inner atmosphere of the plastic film is multiple layers, and the plastic film comprises a corona layer, a heat-resistant layer and a heat sealing layer. The adhesive is sprayed on the surface of the aluminum foil, after the plastic film and the aluminum foil are attached to each other, the plastic film and the aluminum foil are laminated together through the hot pressing equipment, then the quality of a finished product is detected, it is ensured that the barrier property and the puncture resistance of the finished product meet the standard, and the aluminum plastic film is wound, transported and delivered through the winding mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum-plastic films, in particular to an aluminum-plastic film for lithium batteries and a preparation process thereof. Background Art

[0002] Aluminum-plastic film is a composite material used for lithium-ion battery packaging, mainly used in soft-pack batteries and blade batteries. It has the characteristics of high barrier properties, good cold stamping formability, puncture resistance, electrolyte stability and insulation. These characteristics make the aluminum-plastic film perform well in protecting internal electrodes and isolating the external environment. At the same time, different adhesives need to be used in the production of aluminum-plastic film. Adhesives with different compositions can bring more beneficial effects to the aluminum-plastic film.

[0003] However, in the current prior art, since the aluminum-plastic film has many usage scenarios and needs to come into contact with a large amount of corrosive substances when covering lithium batteries, the aluminum-plastic film will gradually corrode under long-term use, causing safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a lithium battery aluminum-plastic film and a preparation process thereof to solve the deficiencies in the above-mentioned prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: the aluminum-plastic film comprises a plastic film, an aluminum foil, an adhesive and an anti-corrosion coating, the aluminum-plastic film is a roll of plastic film and a roll of aluminum foil bonded to each other, the plastic film and the aluminum foil are bonded at the bonding point by using an adhesive, and the anti-corrosion coating is sprayed after the plastic film and the aluminum foil are bonded to each other, wherein the adhesive is a mixture of modified polyester polyol, polyether polyol, polyisocyanate monomer, epoxy resin, chain extender, catalyst and auxiliary agent, the plastic film is composed of multiple layers of polypropylene, and the inner atmosphere thereof is multiple layers, including a corona layer, a heat-resistant layer and a heat-sealing layer.

[0006] 2. A process for preparing an aluminum-plastic film for lithium batteries, used to produce the aluminum-plastic film according to claim 1, characterized in that:

[0007] S1. Spray the adhesive on the surface of the aluminum foil;

[0008] S2, after the plastic film and the aluminum foil are attached to each other, the plastic film and the aluminum foil are laminated together by a hot pressing device;

[0009] S3. Conduct quality inspection on finished products to ensure that their barrier properties and puncture resistance meet the standards;

[0010] S4, rolling up the aluminum-plastic film through the rolling mechanism for transportation and shipment;

[0011] The winding mechanism comprises a support frame 1, on which a driving source 2 is arranged, and the driving source 2 can drive a first group of cutters 3 to cut the aluminum-plastic film, and when the driving source 2 drives the first group of cutters 3 to cut the aluminum-plastic film, the aluminum-plastic film can be bonded to the adhesive tape in the covering component 4;

[0012] The driving source 2 can drive the winding assembly 5 to wind the aluminum-plastic film during the resetting process, and at this time, the aluminum-plastic film can drive the adhesive tape to wind the aluminum-plastic film when the aluminum-plastic film is wound;

[0013] After the adhesive tape is wound around the aluminum-plastic film, the resetting movement of the driving source 2 can drive the cutting assembly 6 to cut the adhesive tape.

[0014] Furthermore, a connecting plate is provided at the output end of the driving source, the first group of cutters includes a first cutter provided on the connecting plate, and the first cutter group also includes a second cutter provided on the supporting frame.

[0015] Furthermore, the covering assembly includes a first spring telescopic rod arranged at the bottom of the connecting plate, a pressing plate is arranged at the output end of the first spring telescopic rod, the covering assembly includes a first winding shaft threadedly connected to the supporting frame, a roll of adhesive tape is arranged on the first winding shaft, and a supporting plate is connected to the first winding shaft;

[0016] The covering assembly also includes two first gear conditions slidably connected to the support frame, the two first gear conditions are respectively located on both sides of the support plate in a one-to-one correspondence, the two first gear conditions are respectively meshed with the two first gear parts in a one-to-one correspondence, the two first gear parts are both rotatably connected to the support frame, the two first gear parts are respectively meshed with the two second gear conditions in a one-to-one correspondence, the two second gear conditions are both slidably connected to the support frame, two second spring telescopic rods are respectively provided at the bottom of the two first gear conditions in a one-to-one correspondence, the two second spring telescopic rods are both provided on the support frame, a clamping groove is respectively provided on the two second gear conditions, a limit rod is provided at the top of the two second gear conditions, and an arc surface is provided on the limit rod.

[0017] Furthermore, the covering assembly also includes two support rods arranged on the support frame, each of the two support rods is provided with a sliding cavity, each of the two sliding cavities has a guide rail on both sides, each of the two sliding cavities is slidably connected to a spring telescopic member, each of the two spring telescopic members is provided with a limit member on both sides, and the four limit members are slidably connected to the four guide rails in a one-to-one correspondence;

[0018] The covering assembly also includes two telescopic sleeves which are respectively arranged in a one-to-one correspondence in the two support rods, each of the two telescopic sleeves is provided with a spring member, the two spring members are respectively connected to the two connecting rods, the two connecting rods are respectively slidably connected in the two telescopic sleeves, the two connecting rods are respectively connected to the two clamping members respectively and a one-to-one correspondence, the ends of the two clamping members away from the connecting rods both penetrate to the outside of the support rods, and the two clamping members respectively correspond to the positions of the two clamping grooves.

[0019] Furthermore, the covering assembly also includes two first wires, one end of which is connected to the two spring telescopic parts respectively, and the other ends of the two first wires respectively pass through the inside of the two telescopic sleeves respectively, and one end of the two first wires located inside the telescopic sleeves is connected to the two connecting rods respectively.

[0020] Furthermore, the covering assembly also includes two first abutment rods arranged on both sides of the connecting plate, and the two first abutment rods correspond one-to-one to the two first tooth condition positions respectively. The covering assembly also includes two second abutment rods arranged on both sides of the connecting plate, and the two second abutment rods correspond one-to-one to the two clamping parts positions respectively.

[0021] Furthermore, the winding assembly includes a motor rotatably connected to the support frame, the output end of the motor is arranged at one end of the second winding shaft, the other end of the second winding shaft is provided with a first ratchet member, the outer ring of the first ratchet member is connected to one end of a second wire, the other end of the second wire is connected to the top of the connecting plate, the outer ring of the first ratchet member is connected to the output end of a torsion spring member, and the torsion spring member is arranged on the support frame.

[0022] Furthermore, the cutting assembly includes two third spring telescopic rods arranged on the support frame, and a third cutter is arranged at the output end of the two third spring telescopic rods. The cutting assembly also includes a fourth cutter arranged on the support frame, and the fourth cutter corresponds to the position of the third cutter.

[0023] Furthermore, the cutting assembly also includes a fixing member arranged on the supporting frame, and two second ratchet members are rotatably connected to both sides of the fixed connection, and the outer rings of the two second ratchet members are meshed with a third gear condition, and the third gear condition is slidably connected to the supporting frame, and a limit block is arranged on the third gear condition, and the limit block corresponds to the position of the connecting plate, and the inner rings of the two second ratchet members are rotatably connected to one end of the two transmission rods respectively, and the other ends of the two transmission rods are rotatably connected to the two fixed blocks respectively, and the two fixed blocks are connected to the third cutter.

[0024] In the above technical scheme, the present invention provides a lithium battery aluminum-plastic film and its preparation process, which starts a driving source to drive a first cutting knife group to cut the aluminum-plastic film, adheres the aluminum-plastic film to the tape through a covering component, and then drives the tape to wind the aluminum-plastic film under the reset movement of the driving source so that the aluminum-plastic film is tightened, and then the cutting component cuts the tape, so that the aluminum-plastic film can be quickly tightened and limited after completing a roll, preventing the aluminum-plastic film from loosening during transportation, so that the aluminum-plastic film can be more conveniently transported, and the tightened aluminum-plastic film is more conducive to the next use, and prevents damage caused by loosening of the aluminum-plastic film during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0026] Figure 1 One of the overall structural diagrams provided by the embodiment of the present invention;

[0027] Figure 2 The second schematic diagram of the overall structure provided by the embodiment of the present invention;

[0028] Figure 3 The third overall structural diagram provided for an embodiment of the present invention;

[0029] Figure 4 One of the internal structure schematic diagrams provided by the embodiment of the present invention;

[0030] Figure 5 The second schematic diagram of the internal structure provided by the embodiment of the present invention;

[0031] Figure 6 The embodiment of the present invention provides Figure 5 A schematic diagram of the enlarged structure at point A;

[0032] Figure 7 One of the partial structural cross-sectional schematic diagrams provided by an embodiment of the present invention;

[0033] Figure 8 The embodiment of the present invention provides Figure 7 A schematic diagram of the enlarged structure at B;

[0034] Fig. 9 The second schematic diagram of a partial structural cross-section provided for an embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 1. Support frame; 2. Drive source; 3. First set of cutters; 31. Connecting plate; 32. First cutter; 33. Second cutter; 4. Covering assembly; 41. First spring telescopic rod; 42. Pressing plate; 43. First winding shaft; 45. Support plate; 46. First gear condition; 47. First gear member; 48. Second gear condition; 49. Second spring telescopic rod; 410. Limit rod; 411. Support rod; 412. Guide rail; 413. Spring telescopic member; 414. Limit member; 415. Telescopic sleeve; 416. Spring member; 417, connecting rod; 418, clamping member; 419, first conductor; 420, first abutting rod; 421, second abutting rod; 5, winding assembly; 51, motor; 52, second winding shaft; 53, first ratchet member; 54, second conductor; 55, torsion spring member; 6, cutting assembly; 61, third spring telescopic rod; 62, third cutter; 63, fourth cutter; 64, fixing member; 65, second ratchet member; 66, third tooth condition; 67, limit block; 68, transmission rod; 69, fixing block. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] See also Figure 1-9 The aluminum-plastic film provided in the embodiment of the present invention is prepared by the following raw materials: the aluminum-plastic film includes a plastic film, an aluminum foil, an adhesive and an anti-corrosion coating, the aluminum-plastic film is a roll of plastic film and a roll of aluminum foil bonded to each other, the plastic film and the aluminum foil are bonded at the bonding point using an adhesive, and the anti-corrosion coating is sprayed after the plastic film and the aluminum foil are bonded to each other, wherein the adhesive is a mixture of modified polyester polyol, polyether polyol, polyisocyanate monomer, epoxy resin, chain extender, catalyst and auxiliary agent, the plastic film is composed of multiple layers of polypropylene, and the inner atmosphere thereof is multi-layered, including a corona layer, a heat-resistant layer and a heat-sealing layer.

[0039] Preferably, the preparation process of the plastic film comprises:

[0040] S1. Spray the adhesive on the surface of the aluminum foil;

[0041] S2, after the plastic film and the aluminum foil are attached to each other, the plastic film and the aluminum foil are laminated together by a hot pressing device;

[0042] S3. Conduct quality inspection on finished products to ensure that their barrier properties and puncture resistance meet the standards;

[0043] S4, rolling up the aluminum-plastic film through the rolling mechanism for transportation and shipment;

[0044] The winding mechanism comprises a support frame 1, on which a driving source 2 is arranged, and the driving source 2 can drive a first group of cutters 3 to cut the aluminum-plastic film, and when the driving source 2 drives the first group of cutters 3 to cut the aluminum-plastic film, the aluminum-plastic film can be bonded to the adhesive tape in the covering component 4;

[0045] The driving source 2 can drive the winding assembly 5 to wind the aluminum-plastic film during the resetting process, and at this time, the aluminum-plastic film can drive the adhesive tape to wind the aluminum-plastic film when the aluminum-plastic film is wound;

[0046] After the adhesive tape is wound around the aluminum-plastic film, the resetting movement of the driving source 2 can drive the cutting assembly 6 to cut the adhesive tape.

[0047] Preferably, a connecting plate 31 is provided at the output end of the driving source 2, the first group of cutters 3 includes a first cutter 32 arranged on the connecting plate 31, and the first cutter 32 group also includes a second cutter 33 arranged on the support frame 1. Through the cooperation between the first cutter 32 and the second cutter 33, the aluminum-plastic film can be cut.

[0048] Preferably, the covering component 4 includes a first spring telescopic rod 41 arranged at the bottom of the connecting plate 31, a pressing plate 42 is arranged at the output end of the first spring telescopic rod 41, and the covering component 4 includes a first winding shaft 43 threadedly connected to the support frame 1, a roll of adhesive tape is arranged on the first winding shaft 43, and a support plate 45 is connected to the first winding shaft 43;

[0049] The covering component 4 also includes two first gear conditions 46 slidably connected to the support frame 1, and the two first gear conditions 46 are respectively located on both sides of the support plate 45 in a one-to-one correspondence. The two first gear conditions 46 are respectively meshed with two first gear members 47 in a one-to-one correspondence. The two first gear members 47 are both rotatably connected to the support frame 1. The two first gear members 47 are respectively meshed with two second gear conditions 48 in a one-to-one correspondence. The two second gear conditions 48 are both slidably connected to the support frame 1. Two second spring telescopic rods 49 are respectively arranged at the bottom of the two first gear conditions 46 in a one-to-one correspondence. The two second gear conditions 48 are respectively meshed with two second spring telescopic rods 49 at the bottom of the two first gear conditions 46 in a one-to-one correspondence. The two spring telescopic rods 49 are both arranged on the support frame 1, and a clamping groove is respectively provided on the two second gear conditions 48. A limiting rod 410 is arranged on the top of the two second gear conditions 48, and an arc surface is arranged on the limiting rod 410. Through the setting of the arc surface, the tape is only clamped by the position of the arc surface. When the limiting rod 410 moves upward, the arc surface is still in contact with the adhesive part of the tape, but when the tape is wound onto the aluminum-plastic film, due to the tension and the design of the arc surface, the tape is quickly released from the arc surface, so that the limiting rod 410 will not limit the tape at this time.

[0050] Preferably, the covering assembly 4 further comprises two support rods 411 arranged on the support frame 1, each of the two support rods 411 is provided with a sliding cavity, each of the two sliding cavities has a guide rail 412 on both sides thereof, each of the two sliding cavities is slidably connected with a spring telescopic member 413, each of the two spring telescopic members 413 is provided with a stopper 414 on both sides thereof, and the four stoppers 414 are slidably connected to the four guide rails 412 in a one-to-one correspondence;

[0051] The covering assembly 4 also includes two telescopic sleeves 415 respectively arranged in a one-to-one correspondence in the two support rods 411, and each of the two telescopic sleeves 415 is provided with a spring member 416. The two spring members 416 are respectively connected to two connecting rods 417, and the two connecting rods 417 are respectively slidably connected in the two telescopic sleeves 415. The two connecting rods 417 are respectively connected to two clip-on members 418 in a one-to-one correspondence, and one end of the two clip-on members 418 away from the connecting rods 417 passes through the outside of the support rod 411, and the two clip-on members 418 respectively correspond to the positions of the two clip-on grooves in a one-to-one correspondence.

[0052] Preferably, the covering assembly 4 also includes two first wires 419 whose one ends are connected to the two spring telescopic members 413 respectively, and the other ends of the two first wires 419 respectively pass through the inside of the two telescopic sleeves 415 respectively, and one ends of the two first wires 419 located inside the telescopic sleeves 415 are connected to the two connecting rods 417 respectively.

[0053] Preferably, the covering component 4 also includes two first abutment rods 420 arranged on both sides of the connecting plate 31, and the two first abutment rods 420 correspond to the positions of the two first gear conditions 46 respectively. The covering component 4 also includes two second abutment rods 421 arranged on both sides of the connecting plate 31, and the two second abutment rods 421 correspond to the positions of the two clamping parts 418 respectively. Through the setting of the clamping rod, when the driving source 2 is reset, the limiting rod 410 will not be reset immediately, but the driving source 2 will be reset to drive the tape to adhere to the aluminum-plastic film so that it will not loosen, and after the cutting assembly 6 cuts the tape, the connecting plate 31 drives the second abutment rod 421 to contact the spring telescopic part 413, so that the clamping part 418 withdraws from the clamping groove, so that the limiting rod 410 is reset, so that the tape is limited again, so that the tape can be quickly limited after being cut.

[0054] Preferably, the winding assembly 5 includes a motor 51 rotatably connected to the support frame 1, the output end of the motor 51 is arranged at one end of the second winding shaft 52, and the other end of the second winding shaft 52 is provided with a first ratchet member 53, the outer ring of the first ratchet member 53 is connected to one end of a second wire 54, the other end of the second wire 54 is connected to the top of the connecting plate 31, the outer ring of the first ratchet member 53 is connected to the output end of a torsion spring member 55, and the torsion spring member 55 is arranged on the support frame 1. Through the setting of the second wire 54, when the driving source 2 is reset and drives the connecting plate 31 to move upward, it can drive the second winding shaft 52 to rotate quickly, so that the tape can be quickly wound onto the aluminum-plastic film roll.

[0055] Preferably, the cutting assembly 6 includes two third spring telescopic rods 61 arranged on the support frame 1, and a third cutter 62 is arranged at the output end of the two third spring telescopic rods 61. The cutting assembly 6 also includes a fourth cutter 63 arranged on the support frame 1, and the fourth cutter 63 corresponds to the position of the third cutter 62.

[0056] Preferably, the cutting assembly 6 also includes a fixing member 64 arranged on the support frame 1, and two second ratchet members 65 are rotatably connected on both sides of the fixed connection, the outer rings of the two second ratchet members 65 are meshed with a third gear condition 66, the third gear condition 66 is slidably connected to the support frame 1, and a limit block 67 is arranged on the third gear condition 66, and the limit block 67 corresponds to the position of the connecting plate 31. The inner rings of the two second ratchet members 65 are rotatably connected to one end of the two transmission rods 68 respectively, and the other ends of the two transmission rods 68 are rotatably connected to the two fixed blocks 69 respectively, and the two fixed blocks 69 are connected to the third cutter 62. Through the setting of the second ratchet member 65, when the driving source 2 drives the connecting plate 31 to move downward, it will not drive the movement of the third cutter 62.

[0057] Working principle: By starting the driving source 2 to drive the connecting plate 31 to move, the first cutter 32 moves downward, and at the same time, the connecting plate 31 moves downward to drive the first spring telescopic rod 41 to move downward, so that the pressing plate 42 moves downward, so that the pressing plate 42 contacts the aluminum-plastic film, so that the aluminum-plastic film is pressed downward and adhered to the adhesive tape, and at the same time, the first cutter 32 moves downward and contacts the second cutter 33, so that the aluminum-plastic film is cut;

[0058] At the same time, when the connecting plate 31 moves downward, the two first abutting rods 420 and the two second abutting rods 421 move downward. When the two second abutting rods 421 move downward, they contact the two spring telescopic members 413. By setting the top of one end of the two spring telescopic members 413 located outside the limiting rod 410 as an arc surface, the two spring telescopic members 413 are contracted, so that the two second abutting rods 421 move one by one to the bottom of the two spring telescopic members 413 respectively.

[0059] When the two first abutting rods 420 move downward, they contact the two first gear members 46, so that the two first gear members 46 move downward, drive the two second spring expansion members 413 to contract, so that the two first gear members 47 rotate, drive the two second gear members 48 to move upward, drive the limiting rod 410 to move upward, so that the limiting rod 410 no longer compresses and limits the adhesive tape, and at the same time, when the two second gear members 48 move upward, they drive the two clamping grooves to move upward, so that the two clamping members 418 are respectively clamped with the two clamping grooves in a one-to-one correspondence;

[0060] When the connecting plate 31 moves downward, the weight of the third rack member 66 causes the third rack member 66 to move downward, driving the outer rings of the two second ratchet members 65 to rotate. Due to the arrangement of the second ratchet members 65, the two transmission rods 68 will not move.

[0061] The driving source 2 drives the connecting plate 31 to move downward and drives the second wire 54 to be pulled, so that the outer ring of the first ratchet member 53 is pulled and rotated, and the torsion spring member 55 rotates and stores force. Due to the setting of the first ratchet member 53, the rotation of the outer ring of the first ratchet member 53 cannot drive the first winding shaft 43 to rotate at this time.

[0062] Afterwards, the driving source 2 is reset to drive the connecting plate 31 to move upward, so that the torsion spring member 55 is gradually released to drive the ratchet member to rotate, so that the second winding shaft 52 rotates, so that the aluminum-plastic film is wound, and the adhesive tape is wound around the aluminum-plastic film roll, so that the aluminum-plastic film roll is limited by the adhesive tape winding;

[0063] When the connecting plate 31 moves upward, it contacts the limit block 67, so that the third gear member 66 moves upward, so that the two second ratchet members 65 rotate, and drive the two transmission rods 68 to move, so that the third cutter 62 moves downward and cooperates with the fourth cutter 63 to cut the tape, and then the third cutter 62 is reset as the two transmission rods 68 move;

[0064] When the connecting plate 31 moves upward, it drives the two second abutting rods 421 upward, so that the two second abutting rods 421 contact the two spring telescopic parts 413, so that the two spring telescopic parts 413 move upward, and the four limiting parts 414 slide in the four guide rails 412. When the two spring telescopic parts 413 move upward, they pull the two first wires 419, so that the two connecting rods 417 slide, and drive the two clamping parts 418 to move, so that the two clamping parts 418 are no longer clamped with the two clamping grooves. At this time, the two second spring telescopic parts 413 are released, driving the two first gear conditions 46 to release, driving the two first gear parts 47 to rotate, and driving the two second gear conditions 48 to move down and reset, so that the limiting rod 410 moves down, so that the tape is clamped and limited again.

[0065] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A lithium battery aluminum-plastic film, characterized in that: The aluminum-plastic film comprises a plastic film, an aluminum foil, an adhesive and an anti-corrosion coating. The aluminum-plastic film is a roll of plastic film and a roll of aluminum foil bonded to each other. The plastic film and the aluminum foil are bonded together using an adhesive. After the plastic film and the aluminum foil are bonded to each other, the anti-corrosion coating is sprayed. The adhesive is a mixture of modified polyester polyol, polyether polyol, polyisocyanate monomer, epoxy resin, chain extender, catalyst and additive. The plastic film is composed of multiple layers of polypropylene, and the inner atmosphere thereof is multi-layered, including a corona layer, a heat-resistant layer and a heat-sealing layer.

2. A process for preparing an aluminum-plastic film for lithium batteries, used to produce the aluminum-plastic film according to claim 1, characterized in that: S1. Spray the adhesive on the surface of the aluminum foil; S2, after the plastic film and the aluminum foil are attached to each other, the plastic film and the aluminum foil are laminated together by a hot pressing device; S3. Conduct quality inspection on finished products to ensure that their barrier properties and puncture resistance meet the standards; S4, rolling up the aluminum-plastic film through the rolling mechanism for transportation and shipment; The winding mechanism comprises a support frame (1), on which a driving source (2) is arranged, and the driving source (2) can drive a first group of cutters (3) to cut the aluminum-plastic film, and when the driving source (2) drives the first group of cutters (3) to cut the aluminum-plastic film, it can drive the aluminum-plastic film to adhere to the adhesive tape inside the covering component (4); The driving source (2) can drive the winding assembly (5) to wind the aluminum-plastic film during the resetting process, and at this time, the aluminum-plastic film can drive the adhesive tape to wind the aluminum-plastic film when the aluminum-plastic film is wound; After the adhesive tape is wound around the aluminum-plastic film, the resetting movement of the driving source (2) can drive the cutting component (6) to cut the adhesive tape.

3. A process for preparing an aluminum-plastic film for a lithium battery according to claim 3, characterized in that: The output end of the driving source (2) is provided with a connecting plate (31), the first group of cutters (3) comprises a first cutter (32) arranged on the connecting plate (31), and the first cutter (32) group further comprises a second cutter (33) arranged on the supporting frame (1).

4. A process for preparing an aluminum-plastic film for a lithium battery according to claim 4, characterized in that: The covering component (4) comprises a first spring telescopic rod (41) arranged at the bottom of the connecting plate (31), a pressing plate (42) being arranged at the output end of the first spring telescopic rod (41), the covering component (4) comprising a first winding shaft (43) threadedly connected to the supporting frame (1), a roll of adhesive tape being arranged on the first winding shaft (43), and a supporting plate (45) being connected to the first winding shaft (43); The covering component (4) further comprises two first gear conditions (46) slidably connected to the support frame (1); the two first gear conditions (46) are respectively located on both sides of the support plate (45) in a one-to-one correspondence; the two first gear conditions (46) are respectively meshed with two first gear parts (47) in a one-to-one correspondence; the two first gear parts (47) are both rotatably connected to the support frame (1); the two first gear parts (47) are respectively meshed with two second gear conditions (48) in a one-to-one correspondence; the two second gear conditions (48) are both slidably connected to the support frame (1); two second spring telescopic rods (49) are respectively arranged at the bottom of the two first gear conditions (46); the two second spring telescopic rods (49) are both arranged on the support frame (1); a clamping groove is respectively provided on the two second gear conditions (48); a limiting rod (410) is arranged at the top of the two second gear conditions (48); and an arc surface is arranged on the limiting rod (410).

5. A process for preparing an aluminum-plastic film for lithium batteries according to claim 5, characterized in that: The covering component (4) further comprises two support rods (411) arranged on the support frame (1), each of the two support rods (411) being provided with a sliding cavity, each of the two sliding cavities being provided with a guide rail (412) on both sides thereof, each of the two sliding cavities being slidably connected with a spring telescopic member (413), each of the two spring telescopic members (413) being provided with a limiting member (414) on both sides thereof, and the four limiting members (414) being slidably connected in the four guide rails (412) in a one-to-one correspondence; The covering component (4) further comprises two telescopic sleeves (415) which are respectively and one-to-one arranged in the two support rods (411), each of the two telescopic sleeves (415) is provided with a spring member (416), the two spring members (416) are respectively connected to two connecting rods (417), the two connecting rods (417) are respectively slidably connected in the two telescopic sleeves (415), the two connecting rods (417) are respectively and one-to-one connected to two clamping members (418), the ends of the two clamping members (418) away from the connecting rods (417) are both extended to the outside of the support rod (411), and the two clamping members (418) respectively and one-to-one correspond to the positions of the two clamping grooves.

6. A lithium battery aluminum-plastic film preparation process according to claim 6, characterized in that: The covering component (4) further comprises two first conducting wires (419) whose one ends are respectively connected to the two spring telescopic members (413) in a one-to-one correspondence, and the other ends of the two first conducting wires (419) respectively pass through the inside of the two telescopic sleeves (415) in a one-to-one correspondence, and the ends of the two first conducting wires (419) located inside the telescopic sleeves (415) are respectively connected to the two connecting rods (417) in a one-to-one correspondence.

7. A process for preparing an aluminum-plastic film for lithium batteries according to claim 4, characterized in that: The covering component (4) further includes two first abutment rods (420) arranged on both sides of the connecting plate (31), and the two first abutment rods (420) respectively correspond to the positions of the two first tooth conditions (46) on a one-to-one basis. The covering component (4) further includes two second abutment rods (421) arranged on both sides of the connecting plate (31), and the two second abutment rods (421) respectively correspond to the positions of the two clamping parts (418) on a one-to-one basis.

8. A process for preparing an aluminum-plastic film for lithium batteries according to claim 4, characterized in that: The winding assembly (5) comprises a motor (51) rotatably connected to the support frame (1); the output end of the motor (51) is arranged at one end of a second winding shaft (52); the other end of the second winding shaft (52) is provided with a first ratchet member (53); the outer ring of the first ratchet member (53) is connected to one end of a second wire (54); the other end of the second wire (54) is connected to the top of the connecting plate (31); the outer ring of the first ratchet member (53) is connected to the output end of a torsion spring member (55); and the torsion spring member (55) is arranged on the support frame (1).

9. A process for preparing an aluminum-plastic film for lithium batteries according to claim 4, characterized in that: The cutting assembly (6) comprises two third spring telescopic rods (61) arranged on the support frame (1), and a third cutter (62) is arranged at the output end of the two third spring telescopic rods (61). The cutting assembly (6) further comprises a fourth cutter (63) arranged on the support frame (1), and the fourth cutter (63) corresponds to the third cutter (62) in position.

10. A process for preparing an aluminum-plastic film for lithium batteries according to claim 9, characterized in that: The cutting assembly (6) also includes a fixing member (64) arranged on the support frame (1), and two second ratchet members (65) are rotatably connected to the two sides of the fixing connection, and the outer rings of the two second ratchet members (65) are meshed with a third gear condition (66), and the third gear condition (66) is slidably connected to the support frame (1). A limit block (67) is provided on the third gear condition (66), and the limit block (67) corresponds to the position of the connecting plate (31). The inner rings of the two second ratchet members (65) are rotatably connected to one end of two transmission rods (68) respectively, and the other ends of the two transmission rods (68) are rotatably connected to two fixing blocks (69) respectively, and the two fixing blocks (69) are connected to the third cutter (62).

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