A processing apparatus for an aluminum foil for a battery and a processing method thereof

Abstract

The application provides a battery aluminum foil processing device and method, and relates to the field of aluminum foil processing.The device comprises a cold rolling mechanism, an annealing mechanism, a rough rolling mechanism, a medium rolling mechanism, a finishing rolling mechanism and a slitting mechanism.In processing, the aluminum ingot is first subjected to first cold rolling treatment by the cold rolling mechanism, then subjected to annealing treatment by the annealing mechanism, and finally subjected to multiple cold rolling treatments by the rough rolling mechanism, the medium rolling mechanism and the finishing rolling mechanism in sequence, and finally subjected to edge cutting treatment by the slitting mechanism.In processing, the aluminum foil after annealing is subjected to cold rolling treatment by the first roller assembly, the second roller assembly and the third roller assembly in sequence, the gap between the first roller assembly, the second roller assembly and the third roller assembly decreases in sequence, and the number of the finishing rolling mechanisms can be selected according to requirements.The aluminum foil can be made from the aluminum plate at one time, and the edge cutting treatment can be performed on the aluminum foil, so that the production efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aluminum foil, in particular to a processing device and method for battery aluminum foil. BACKGROUND

[0002] With the subsidy policy of pure electric new energy vehicles being linked with factors such as vehicle endurance mileage, battery and vehicle weight ratio, battery energy density level, domestic power battery manufacturers have launched high energy density power batteries, and the production focus has gradually shifted in this direction, and improving the compaction density is one of the effective methods to improve the energy density.

[0003] The existing battery aluminum foil needs multiple devices to perform multi-stage processing simultaneously in the processing process, and the process needs to be controlled manually, the processing efficiency is not high, and the maintenance cost is high. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a processing device and method for battery aluminum foil, which can solve the technical problem of low processing efficiency of battery aluminum foil.

[0005] The processing device for battery aluminum foil provided by the embodiments of the present application comprises a cold rolling mechanism, an annealing mechanism, a rough rolling mechanism, a medium rolling mechanism, a finishing rolling mechanism and a slitting mechanism, the cold rolling mechanism is provided with a first feeding mechanism and a second material winding mechanism on the two sides respectively, the rough rolling mechanism is provided with a second feeding mechanism on the side, and the slitting mechanism is provided with a second material winding mechanism on the side, the rough rolling mechanism, the medium rolling mechanism and the finishing rolling mechanism are installed in sequence, the rough rolling mechanism comprises a first rack, a first driving oil cylinder, a first roller assembly, a first upper spraying mechanism and a first lower spraying mechanism, the medium rolling mechanism comprises a second rack, a second driving oil cylinder, a second roller assembly, a second upper spraying mechanism and a second lower spraying mechanism, the finishing rolling mechanism is provided with at least two, the finishing rolling mechanism comprises a third rack, a third driving oil cylinder, a third roller assembly, a third upper spraying mechanism and a third lower spraying mechanism, the first roller assembly is installed in the middle of the first rack, the first driving oil cylinder is used to drive the first roller assembly to rotate, the first upper spraying mechanism and the first lower spraying mechanism are installed above and below the first roller assembly respectively, the second roller assembly is installed in the middle of the second rack, the second driving oil cylinder is used to drive the second roller assembly to rotate, the second upper spraying mechanism and the second lower spraying mechanism are installed above and below the second roller assembly respectively, the third roller assembly is installed in the middle of the third rack, the third driving oil cylinder is used to drive the third roller assembly to rotate, the third upper spraying mechanism and the third lower spraying mechanism are installed above and below the third roller assembly respectively, and the two sides of the first rack, the two sides of the second rack and the two sides of the third rack are provided with rotatable roller shafts.

[0006] Preferably, the first rolling assembly, the second rolling assembly, and the third rolling assembly include an upper support roller, an upper pressing roller, a lower support roller, and a lower pressing roller, which are arranged sequentially from top to bottom. Steel rings are sleeved on the outside of the upper pressing roller and the lower support roller, and the steel rings are detachable. The upper pressing roller and the lower pressing roller roll in opposite directions.

[0007] Preferably, the distance between the upper pressing roll and the lower pressing roll is adjustable. Tension lifting adjustment components are provided on the side of the roughing rolling mechanism, the intermediate rolling mechanism, and the finishing rolling mechanism. The tension lifting adjustment component includes a bracket, an adjusting roll is provided on the side of the bracket, and a smoothing component is provided on the upper and lower parts of the adjusting roll. The adjusting roll is rotatably mounted on the bracket.

[0008] Preferably, the annealing mechanism includes an annealing chamber, a lifting door is provided at the front end of the annealing chamber, heating wires are provided at both ends inside the annealing chamber, a fan is provided at the upper end inside the annealing chamber, multiple fans are provided, an aluminum foil mounting rack is provided inside the annealing chamber, the two ends of the aluminum foil mounting rack are set as arcs, and a temperature detector is provided inside the annealing chamber.

[0009] Preferably, the upper part of the first frame, the upper part of the second frame, and the upper part of the third frame are all provided with transverse supports, and the transverse supports are provided with flue gas collection pipes. The first frame, the second frame, and the third frame are provided with maintenance ports.

[0010] Preferably, the slitting mechanism includes a frame, a slide rail, a first cutting component, a second cutting component, a feeding roller assembly, and a discharging roller assembly. The frame is U-shaped, the slide rail is mounted on the frame, the first cutting component is mounted on one side of the slide rail, the second cutting component is mounted on the other side of the slide rail, the feeding roller assembly is mounted on one side of the middle of the frame, and the discharging roller assembly is mounted on the other side of the middle of the frame.

[0011] Preferably, a pressure roller assembly is provided between the first cutting assembly and the feeding roller assembly. The pressure roller assembly is installed at an angle on the frame, and pressure pneumatic cylinders are provided at both ends of the pressure roller assembly.

[0012] Preferably, the first upper spraying mechanism, the first lower spraying mechanism, the second upper spraying mechanism, the second lower spraying mechanism, the third upper spraying mechanism, and the third lower spraying mechanism each include multiple spray heads, and the multiple spray heads are arranged in a straight line.

[0013] A processing method of a processing device of an aluminum foil for a battery, comprising the following steps:

[0014] Step one, placing the aluminum ingot into the cold rolling mechanism to perform the first cold rolling, and cold rolling the aluminum ingot into an aluminum plate, and performing the second cold rolling on the aluminum plate;

[0015] Step two, rolling up the aluminum plate after the second cold rolling to perform the annealing treatment through the annealing mechanism;

[0016] Step three, sequentially passing the aluminum roll after the annealing treatment through the rough rolling mechanism, the intermediate rolling mechanism and the finish rolling mechanism to perform the n-th cold rolling treatment, and obtaining the aluminum foil;

[0017] Step four, performing the slitting treatment on the aluminum foil after the n-th cold rolling treatment through the slitting mechanism, and performing the winding treatment through the second winding mechanism;

[0018] Step five, performing the carbon coating treatment on the aluminum foil, and performing the rolling treatment, then performing the lamination treatment, placing the aluminum foil after the lamination into the battery shell, then performing the baking treatment, the liquid injection treatment, and finally performing the detection treatment on the battery.

[0019] Preferably, the finish rolling mechanism in step three can perform the cold rolling treatment on the aluminum foil for multiple times.

[0020] The beneficial effects of the present application are as follows:

[0021] The application provides a battery aluminum foil processing device, which comprises a cold rolling mechanism, an annealing mechanism, a rough rolling mechanism, a medium rolling mechanism, a finishing rolling mechanism and a slitting mechanism, first feeding mechanisms and second material winding mechanisms are arranged on the two sides of the cold rolling mechanism, the second feeding mechanism is arranged on the side of the rough rolling mechanism, the second material winding mechanism is arranged on the side of the slitting mechanism, the rough rolling mechanism, the medium rolling mechanism and the finishing rolling mechanism are sequentially installed, the rough rolling mechanism comprises a first rack, a first driving oil cylinder, a first roller assembly, a first upper spraying mechanism and a first lower spraying mechanism, the medium rolling mechanism comprises a second rack, a second driving oil cylinder, a second roller assembly, a second upper spraying mechanism and a second lower spraying mechanism, at least two finishing rolling mechanisms are arranged, the finishing rolling mechanism comprises a third rack, a third driving oil cylinder, a third roller assembly, a third upper spraying mechanism and a third lower spraying mechanism, the first roller assembly is installed in the middle of the first rack, the first driving oil cylinder is used for driving the first roller assembly to rotate, the first upper spraying mechanism and the first lower spraying mechanism are installed above and below the first roller assembly respectively, the second roller assembly is installed in the middle of the second rack, the second driving oil cylinder is used for driving the second roller assembly to rotate, the second upper spraying mechanism and the second lower spraying mechanism are installed above and below the second roller assembly respectively, the third roller assembly is installed in the middle of the third rack, the third driving oil cylinder is used for driving the third roller assembly to rotate, the third upper spraying mechanism and the third lower spraying mechanism are installed above and below the third roller assembly respectively, and roller shafts that can rotate are arranged on the two sides of the first rack, the two sides of the second rack and the two sides of the third rack. When the device is used, the aluminum ingot can be first subjected to first cold rolling treatment through the cold rolling mechanism, then subjected to annealing treatment through the annealing mechanism, finally subjected to multiple cold rolling treatments through the rough rolling mechanism, the medium rolling mechanism and the finishing rolling mechanism in sequence, and finally subjected to edge cutting treatment through the slitting mechanism. When the device is used, the aluminum foil after annealing is subjected to cold rolling treatment through the first roller assembly, the second roller assembly and the third roller assembly in sequence, the gap between the first roller assembly, the second roller assembly and the third roller assembly decreases in sequence, and the number of the finishing rolling mechanisms can be selected according to requirements. The device can make aluminum plates into aluminum foils at one time, and the aluminum foils can be subjected to edge cutting treatment, so that the production efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0023] Figure 1It is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 It is a schematic diagram of the cold rolling mechanism structure of the present application;

[0025] Figure 3 It is a schematic diagram of the annealing mechanism structure of the present application;

[0026] Figure 4 It is a schematic diagram of the slitting mechanism structure of the present application.

[0027] The reference signs are respectively:

[0028] 1, cold rolling mechanism; 2, annealing mechanism; 3, rough rolling mechanism; 4, medium rolling mechanism; 5, finishing rolling mechanism; 6, slitting mechanism; 7, first feeding mechanism; 8, first material winding mechanism; 9, second feeding mechanism; 10, second material winding mechanism; 11, first rack; 12, first driving oil cylinder; 13, first rolling assembly; 14, first upper spraying mechanism; 15, first lower spraying mechanism; 16, second rack; 17, second driving oil cylinder; 18, second rolling assembly; 19, second upper spraying mechanism; 20, second lower spraying mechanism; 21, third rack; 22, third driving oil cylinder; 23, third rolling assembly; 24, third upper spraying mechanism; 25, third lower spraying mechanism; 26, upper supporting roller; 27, upper pressing roller; 28, lower supporting roller; 29, lower pressing roller; 30, steel ring; 31, tension lifting adjusting assembly; 32, support; 33, adjusting roller; 34, smoothing assembly; 35, annealing bin; 36, heating wire; 37, fan; 38, aluminum foil mounting frame; 39, temperature detector; 40, transverse support; 41, frame; 42, slide rail; 43, first cutting assembly; 44, second cutting assembly; 45, feeding roller assembly; 46, discharging roller assembly; 47, pressing roller assembly; 48, pressing pneumatic cylinder. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts, fall within the scope of protection of the present application.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0034] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] Example 1

[0036] like Figures 1-4As shown, a processing apparatus for aluminum foil for batteries includes a cold rolling mechanism 1, an annealing mechanism 2, a roughing rolling mechanism 3, an intermediate rolling mechanism 4, a finishing rolling mechanism 5, and a slitting mechanism 6. A first feeding mechanism 7 and a second coiling mechanism 10 are respectively arranged on both sides of the cold rolling mechanism 1. A second feeding mechanism 9 is arranged on the side of the roughing rolling mechanism 3, and a second coiling mechanism 10 is arranged on the side of the slitting mechanism 6. The roughing rolling mechanism 3, the intermediate rolling mechanism 4, and the finishing rolling mechanism 5 are installed sequentially. The roughing rolling mechanism 3 includes a first frame 11, a first drive cylinder 12, a first rolling assembly 13, a first upper spraying mechanism 14, and a first lower spraying mechanism 15. The intermediate rolling mechanism 4 includes a second frame 16, a first upper spraying mechanism 14, and a first lower spraying mechanism 15. The finishing mill 5 comprises at least two components: a second drive cylinder 17, a second rolling assembly 18, a second upper spraying mechanism 19, and a second lower spraying mechanism 20. The finishing mill 5 includes a third frame 21, a third drive cylinder 22, a third rolling assembly 23, a third upper spraying mechanism 24, and a third lower spraying mechanism 25. The first rolling assembly 13 is mounted in the middle of the first frame 11. The first drive cylinder 12 drives the first rolling assembly 13 to rotate. The first upper spraying mechanism 14 and the first lower spraying mechanism 15 are respectively mounted above and below the first rolling assembly 13. The second rolling assembly 18 is mounted in the middle of the second frame 16. The second drive cylinder 17 is used to drive the second rolling assembly 18 to rotate. The second upper spraying mechanism 19 and the second lower spraying mechanism 20 are respectively installed above and below the second rolling assembly 18. The third rolling assembly 23 is installed in the middle of the third frame 21. The third drive cylinder 22 is used to drive the third rolling assembly 23 to rotate. The third upper spraying mechanism 24 and the third lower spraying mechanism 25 are respectively installed above and below the third rolling assembly 23. Rotatable rollers are provided on both sides of the first frame 11, both sides of the second frame 16, and both sides of the third frame 21. In the process of this invention, aluminum ingots can first be... The aluminum foil undergoes a first cold rolling process via cold rolling unit 1, followed by annealing via annealing unit 2. Finally, it undergoes multiple cold rolling processes via roughing unit 3, intermediate rolling unit 4, and finishing rolling unit 5. The foil is then trimmed via slitting unit 6. In this invention, the annealed aluminum foil is sequentially cold rolled via first rolling assembly 13, second rolling assembly 18, and third rolling assembly 23, with the gaps between these components decreasing sequentially. A suitable number of finishing rolling units 5 can be selected based on requirements. This invention allows for the production of aluminum foil from aluminum plates in a single process and enables trimming of the aluminum foil, resulting in high production efficiency.

[0037] Specifically, the first upper spraying mechanism 14, the second lower spraying mechanism 20, the second upper spraying mechanism 19, the second lower spraying mechanism 20, the third upper spraying mechanism 24, and the third lower spraying mechanism 25 of the present invention respectively cool the aluminum foil in the cold rolling process when the first rolling assembly 13, the second rolling assembly 18, and the third rolling assembly 23 are working. The rollers on both sides of the first frame 11, both sides of the second frame 16, and both sides of the third frame 21 can allow the aluminum foil to enter the first rolling assembly 13, the second rolling assembly 18, or the third rolling assembly 23 in parallel during the processing.

[0038] In this embodiment, the first rolling assembly 13, the second rolling assembly 18, and the third rolling assembly 23 include an upper support roller 26, an upper pressing roller 27, a lower support roller 28, and a lower pressing roller 29. The upper support roller 26, the upper pressing roller 27, the lower pressing roller 29, and the lower support roller 28 are arranged sequentially from top to bottom. A steel ring 30 is sleeved on the outside of the upper pressing roller 27 and the lower support roller 28. The steel ring 30 is detachable. The upper pressing roller 27 and the lower pressing roller 29 roll in opposite directions. The steel ring 30 of this invention is used to thin aluminum plates or aluminum foils, and when the steel ring 30 is damaged, it can be directly replaced.

[0039] In this embodiment, the distance between the upper pressing roller 27 and the lower pressing roller 29 is adjustable. Tension lifting adjustment components 31 are provided on the side of the roughing mechanism 3, the intermediate rolling mechanism 4, and the finishing rolling mechanism 5. The tension lifting adjustment component 31 includes a bracket 32, and an adjusting roller 33 is provided on the side of the bracket 32. Smoothing components 34 are provided on the upper and lower parts of the adjusting roller 33. The adjusting roller 33 can be rotatably mounted on the bracket 32. The distance between the upper pressing roller 27 and the lower pressing roller 29 of the present invention can be adjusted, and can also be adjusted by steel rings 30 of different sizes. The tension lifting adjustment component 31 of the present invention can adjust the tension and flatness of the aluminum foil, so that the aluminum foil entering the first rolling assembly 13, the second rolling assembly 18, and the third rolling assembly 23 is flat.

[0040] In this embodiment, the annealing mechanism 2 includes an annealing chamber 35. A lifting door is provided at the front end of the annealing chamber 35. Heating wires 36 are provided at both ends inside the annealing chamber 35. A fan 37 is provided at the upper end inside the annealing chamber 35. Multiple fans 37 are provided. An aluminum foil mounting bracket 38 is provided inside the annealing chamber 35, with both ends of the aluminum foil mounting bracket 38 being arc-shaped. A temperature detector 39 is provided inside the annealing chamber 35. In use, the heating wires 36 heat the interior of the furnace, and the fan 37 circulates the airflow inside the annealing chamber 35. Specifically, hot air can be input into the convection pipe through the first and second air supply pipes, and hot air can be blown from the bottom of the furnace through the convection pipe, ensuring continuous circulation within the annealing chamber 35. This invention ensures uniform temperature on both sides of the furnace, preventing localized high temperatures inside the furnace.

[0041] In this embodiment, a transverse support 40 is provided on the upper part of the first frame 11, the upper part of the second frame 16, and the upper part of the third frame 21. A flue gas collection pipe is provided inside the transverse support 40. An inspection port is provided on the first frame 11, the second frame 16, and the third frame 21. The flue gas collection pipe collects and treats the exhaust gas generated by the device of the present invention, and the inspection port can be used to inspect the first rolling assembly 13, the second rolling assembly 18, and the third rolling assembly 23.

[0042] In this embodiment, the slitting mechanism 6 includes a frame 41, a slide rail 42, a first cutting component 43, a second cutting component 44, a feeding roller assembly 45, and a discharge roller assembly 46. The frame 41 is U-shaped, the slide rail 42 is mounted on the frame 41, the first cutting component 43 is mounted on one side of the slide rail 42, the second cutting component 44 is mounted on the other side of the slide rail 42, the feeding roller assembly 45 is mounted on one side of the middle of the frame 41, and the discharge roller assembly 46 is mounted on the other side of the middle of the frame 41. The first cutting component 43 and the second cutting component 44 of the present invention can cut the waste edges on both sides of the aluminum foil, so that the aluminum foil rolled up by the second winding mechanism 10 is flat on both sides, directly meeting the production standards, without the need for secondary cutting.

[0043] In this embodiment, a pressure roller assembly 47 is provided between the first cutting assembly 43 and the feeding roller assembly 45. The pressure roller assembly 47 is installed obliquely on the frame 41. Pressure pneumatic cylinders 48 are provided at both ends of the pressure roller assembly 47. The pressure roller assembly 47 of the present invention can be used to perform secondary flattening treatment on aluminum foil, so that the aluminum foil rolled up by the second winding mechanism 10 is flatter.

[0044] In this embodiment, the first upper spraying mechanism 14, the first lower spraying mechanism 15, the second upper spraying mechanism 19, the second lower spraying mechanism 20, the third upper spraying mechanism 24, and the third lower spraying mechanism 25 each include multiple spray heads, which are arranged in a straight line. The present invention uses double-sided spraying and cooling treatment.

[0045] Example 2

[0046] A method for processing aluminum foil for batteries, comprising the following steps:

[0047] Step 1: Place the aluminum ingot in the cold rolling unit 1 for the first cold rolling, and cold roll the aluminum ingot into an aluminum plate. Then, cold roll the aluminum plate for the second cold rolling.

[0048] Step 2: Roll up the aluminum sheet after the second cold rolling and anneal it through annealing mechanism 2;

[0049] Step 3: The annealed aluminum coil is passed through the roughing rolling mill 3, the intermediate rolling mill 4, and the finishing rolling mill 5 in sequence for the nth cold rolling process to obtain aluminum foil;

[0050] Step 4: The aluminum foil after the nth cold rolling process is cut by the slitting mechanism 6 and then wound up by the second winding mechanism 10.

[0051] Step 5: Carbonize the aluminum foil, roll it, stack it, place the stacked aluminum foil inside the battery casing, bake it, inject electrolyte, and finally test the battery.

[0052] In this embodiment, the precision rolling mechanism 5 in step three can perform multiple cold rolling processes on the aluminum foil.

[0053] This processing method can process aluminum plates into aluminum foil in one go with high processing efficiency. It can also process aluminum foil to produce aluminum foil batteries. This processing device and method have high processing efficiency.

[0054] Example 3

[0055] The cold rolling mechanism 1, roughing rolling mechanism 3, intermediate rolling mechanism 4, and finishing rolling mechanism 5 of the present invention can all be arranged to form a new aluminum foil production equipment, or they can be used for segmented production as needed. The rest are the same as in Embodiment 1, and will not be repeated here.

[0056] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A processing apparatus for aluminum foil for batteries, characterized in that: Including cold rolling mechanism, annealing mechanism, rough rolling mechanism, medium rolling mechanism, finishing rolling mechanism and cutting mechanism, the cold rolling mechanism is respectively provided with first feeding mechanism and second material winding mechanism on both sides, the rough rolling mechanism is provided with second feeding mechanism on the side, the cutting mechanism is provided with second material winding mechanism on the side, the rough rolling mechanism, the medium rolling mechanism, the finishing rolling mechanism are sequentially installed, the rough rolling mechanism includes first rack, first drive oil cylinder, first roller assembly, first upper spraying mechanism, first lower spraying mechanism, the medium rolling mechanism includes second rack, second drive oil cylinder, second roller assembly, second upper spraying mechanism, second lower spraying mechanism, the finishing rolling mechanism is provided with at least two, the finishing rolling mechanism includes third rack, third drive oil cylinder, third roller assembly, third upper spraying mechanism, third lower spraying mechanism, the first roller assembly is installed in the middle part of the first rack, the first drive oil cylinder is used for driving the rotation of the first roller assembly, the first upper spraying mechanism, the first lower spraying mechanism are installed above and below the first roller assembly respectively, the second roller assembly is installed in the middle part of the second rack, the second drive oil cylinder is used for driving the rotation of the second roller assembly, the second upper spraying mechanism, the second lower spraying mechanism are installed above and below the second roller assembly respectively, the third roller assembly is installed in the middle part of the third rack, the third drive oil cylinder is used for driving the rotation of the third roller assembly, the third upper spraying mechanism, the third lower spraying mechanism are installed above and below the third roller assembly respectively, both sides of the first rack, both sides of the second rack, both sides of the third rack are provided with rotatable roller shafts;The first roller assembly, the second roller assembly, the third roller assembly include upper support roller, upper pressing roller, lower support roller, lower pressing roller, the upper support roller, the upper pressing roller, the lower pressing roller, the lower support roller are sequentially arranged from top to bottom, the outer part of the upper pressing roller and the outer part of the lower support roller are provided with a steel ring, the steel ring is detachably arranged, the upper pressing roller and the lower pressing roller roll in opposite directions;The distance between the upper pressing roller and the lower pressing roller is adjustable, the side of the rough rolling mechanism, the medium rolling mechanism, the side of the finishing rolling mechanism are provided with tension lifting adjusting assembly, the tension lifting adjusting assembly includes support, the side of the support is provided with adjusting roller, the upper and lower parts of the adjusting roller are provided with smoothing assembly, the adjusting roller is rotatably installed on the support;The annealing mechanism includes annealing bin, the front end of the annealing bin is provided with lifting door, the both ends inside the annealing bin are provided with heating wire, the upper end inside the annealing bin is provided with fan, the fan is provided with multiple, the inside of the annealing bin is provided with aluminum foil mounting bracket, the both ends of the aluminum foil mounting bracket are provided with arc shape, the inside of the annealing bin is provided with temperature detector.

2. The apparatus for processing an aluminum foil for a battery according to claim 1, wherein: The upper part of the first rack, the upper part of the second rack, the upper part of the third rack are provided with transverse support, the inside of the transverse support is provided with flue gas collecting pipeline, the first rack, the second rack, the third rack are provided with access hole.

3. The apparatus for processing an aluminum foil for a battery according to claim 1, wherein: The slitting mechanism comprises a frame, a slide rail, a first cutting assembly, a second cutting assembly, a feeding roller assembly and a discharging roller assembly.

4. The apparatus for processing an aluminum foil for a battery according to claim 3, wherein: A pressing roller assembly is arranged between the first cutting assembly and the feeding roller assembly, and the pressing roller assembly is obliquely arranged on the frame.

5. The apparatus for processing an aluminum foil for a battery according to claim 1, wherein: The first upper spraying mechanism, the first lower spraying mechanism, the second upper spraying mechanism, the second lower spraying mechanism, the third upper spraying mechanism and the third lower spraying mechanism each comprise a plurality of spraying heads arranged in a linear form.

6. A processing method for the processing apparatus for an aluminum foil for a battery as claimed in any one of claims 1 to 5, characterized by, The method comprises the following steps: Step one: placing the aluminum ingot on the cold rolling mechanism to perform the first cold rolling, and rolling the aluminum ingot into an aluminum plate, and performing the second cold rolling on the aluminum plate; Step two: rolling the aluminum plate after the second cold rolling and performing annealing treatment on the aluminum plate through the annealing mechanism; Step three: sequentially passing the aluminum roll after the annealing treatment through the rough rolling mechanism, the intermediate rolling mechanism and the finishing rolling mechanism to perform the nth cold rolling treatment, and obtaining the aluminum foil; Step four: performing slitting treatment on the aluminum foil after the nth cold rolling treatment through the slitting mechanism, and performing winding treatment on the aluminum foil through the second winding mechanism; Step five: performing carbon coating treatment on the aluminum foil, and performing rolling treatment, then performing lamination treatment, placing the aluminum foil after the lamination into a battery shell, then performing baking treatment and liquid injection treatment, and finally performing detection treatment on the battery.

7. The processing method of the processing apparatus for an aluminum foil for a battery according to claim 6, characterized by: The finishing rolling mechanism in step three can perform multiple cold rolling treatments on the aluminum foil.

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