Water plating equipment for preparing composite current collector

Abstract

The utility model discloses water plating equipment for preparing a composite current collector, which comprises an anti-oxidation tank used for carrying out anti-oxidation treatment on the surface of the electroplated composite current collector; the first cleaning mechanism is arranged at the inlet of the anti-oxidation tank, and the first cleaning mechanism is used for cleaning the upper surface and the lower surface of the composite current collector; the roller pair comprises a first roller and a second roller, and the roller pair is arranged at the outlet of the anti-oxidation tank; and the second cleaning mechanism is arranged between the anti-oxidation tank and the roller pair, the second cleaning mechanism comprises a spraying pipe, the spraying pipe is provided with a plurality of nozzles in the first direction, and the nozzles face the gap of the roller pair. Metal particles on the surface of the composite current collector are washed through the first cleaning mechanism, the metal particles are prevented from entering an anti-oxidation tank and being attached to the surface of the composite current collector, and the nozzles of the second cleaning mechanism are arranged towards the rollers, so that attachment of the metal particles is further reduced, and generation of concave-convex marks of the composite current collector is reduced.

Description

Technical Field

[0001] This utility model relates to the field of composite current collector water plating technology, and in particular to a water plating device for preparing composite current collectors. Background Technology

[0002] When preparing composite current collectors for lithium batteries, it is usually necessary to first sputter a metal seed layer on the surface of a polymer material, and then deposit a metal layer of the corresponding thickness on its surface through a water plating device to form a composite current collector with a "metal layer-base film-metal layer" sandwich structure.

[0003] In current electroplating equipment, the conductive clamps on both sides serve as current input points, resulting in denser electric field lines at their edges. This leads to a significantly higher local current density compared to other areas. Consequently, a large number of loose metal particles are more likely to accumulate at the conductive clamps on both sides. These loose metal particles are carried into the anti-oxidation tank and deposited on the surface of the composite current collector. After being pressed by rollers, they are squeezed and adhered to the surface, forming embossed marks. As the number of meters of composite current collector wound increases, these marks accumulate to form annular protrusions, thus greatly reducing the yield of composite current collectors. Utility Model Content

[0004] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide a water plating equipment for preparing composite current collectors. The equipment uses a first cleaning mechanism to wash the copper powder on the surface of the composite current collector, especially at the clamping area where copper powder is prone to accumulate, to prevent the copper powder from being carried into the anti-oxidation tank and adhering to the surface of the composite current collector. The second cleaning mechanism uses nozzles that are set towards the rollers to clean the surface of the composite current collector and the rollers, further reducing copper powder adhesion and reducing the generation of embossed marks on the surface of the composite current collector.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a water plating device for preparing composite current collectors, comprising:

[0006] Antioxidant tank, the antioxidant tank being used to treat the surface of the electroplated composite current collector with antioxidation;

[0007] The first cleaning mechanism is located at the inlet of the anti-oxidation tank and is used to clean the upper and lower surfaces of the composite current collector.

[0008] The pair of rollers includes a first roller and a second roller, and the pair of rollers is disposed at the outlet of the anti-oxidation tank;

[0009] The second cleaning structure is disposed between the antioxidant tank and the rollers. The second cleaning mechanism includes a spray pipe with a plurality of nozzles arranged along a first direction, and the plurality of nozzles are arranged toward the rollers.

[0010] In this technical solution, a first cleaning mechanism is set at the inlet of the anti-oxidation tank to rinse the surface of the composite current collector, preventing loose metal particles accumulated in the electroplating tank from being carried into the anti-oxidation tank and deposited on the surface of the composite current collector. A second cleaning mechanism is set between the anti-oxidation tank and the rollers, with the nozzle of the spray pipe facing the rollers and spraying liquid towards the gap between the rollers. Due to the obstruction of the rollers, the liquid will wash along the rollers to both sides, further reducing the adhesion of metal particles on the surface of the composite current collector, especially at the edge clamping points on both sides. On the other hand, it can also rinse the rollers, preventing the metal particles attached to the rollers from being squeezed onto the surface of the composite current collector, thus reducing the generation of embossed marks.

[0011] In some embodiments, the angle between the nozzle of the spray pipe and the surface of the composite current collector is 30°-60°, and the distance between the position of the liquid sprayed from the nozzle of the spray pipe on the surface of the composite current collector and the gap between the rollers is 5-10cm.

[0012] In this technical solution, by controlling the angle formed between the nozzle and the surface of the composite current collector, as well as the distance between the sprayed liquid on the surface of the composite current collector and the gap between the rollers, it is ensured that the liquid sprayed by the second cleaning mechanism can be flushed along the rollers to both sides, which further improves the rinsing effect of the second cleaning mechanism on the composite current collector and reduces the adhesion of metal particles.

[0013] In some embodiments, the first cleaning mechanism includes an upper cleaning pipe and a lower cleaning pipe, both of which are arranged along a first direction. The upper and lower cleaning pipes are respectively arranged on the upper and lower sides of the composite manifold. The inlet on the same side of the upper and lower cleaning pipes is connected to a first water inlet pipe. Both the upper and lower cleaning pipes are provided with multiple sets of nozzles along the first direction.

[0014] In this technical solution, the first cleaning mechanism can clean the upper and lower surfaces of the composite current collector, reduce the adhesion of metal particles on the upper and lower surfaces, and prevent metal particles from being carried into the anti-oxidation tank.

[0015] In some embodiments, the nozzles on both sides of the upper and lower cleaning pipes are connected by a universal adjusting pipe, and the nozzles on both sides of the upper and lower cleaning pipes are used to rinse the edge of the composite current collector.

[0016] In this technical solution, the nozzles on both sides of the upper and lower cleaning pipes are connected by a universal adjustment pipe, which can adjust the position and height of the nozzles on both sides to accurately rinse the edge clamping area (i.e., the area where loose metal particles are easy to accumulate) and reduce the adhesion of loose metal particles.

[0017] In some embodiments, a second water inlet pipe is connected to the middle of the nozzle via a universal joint.

[0018] In this technical solution, the spray angle of the nozzle can be adjusted by using a universal tube to easily rotate the spray pipe, thus ensuring the rinsing effect.

[0019] In some embodiments, a roller cleaning device is provided on one side of both the first and second rollers of the pair of rollers. The roller cleaning device includes a fixing plate, which is arc-shaped and adapted to the surface of the first and second rollers. A brush is provided on the inner side of the fixing plate, and the brush is in contact with the roller surface.

[0020] In this technical solution, a roller cleaning device is set up to clean the metal particles attached to the roller surface, preventing the metal particles from being squeezed onto the composite current collector surface after they are attached to the roller, thereby further reducing the generation of embossed printing.

[0021] In some embodiments, an adsorption system is provided on the side of the rollers away from the nozzle, and an oven is provided between the rollers and the adsorption system. The adsorption system includes an upper adsorption device and a lower adsorption device, which are respectively arranged on both sides of the composite current collector along a first direction.

[0022] In this technical solution, the composite current collector after passing through the rollers is dried in an oven to obtain a dry composite current collector. Then, the loose metal particles on the surface of the dried composite current collector are adsorbed by the upper and lower adsorption devices to prevent the metal particles from adhering to the surface before winding, which further reduces the generation of embossed marks when the composite current collector is wound up.

[0023] In some embodiments, a recovery tank is provided below the first and second cleaning mechanisms, and a coarse filter device is provided in the recovery tank.

[0024] In this technical solution, the cleaning liquid sprayed by the first and second cleaning mechanisms is collected by a recycling tank, and larger metal particles mixed in the cleaning liquid are filtered out and collected to avoid waste of resources.

[0025] In some embodiments, a fine filtration system is provided at the outlet of the recovery tank, and the recovery tank is connected to the antioxidant tank through the fine filtration system.

[0026] In this technical solution, the metal particles in the cleaning liquid after coarse filtration are further filtered by a fine filtration system, and the finely filtered cleaning liquid is then transported to an anti-oxidation tank for recycling.

[0027] In some embodiments, the system also includes an unwinding roller, an electroplating tank, a guide roller, and a rewinding roller. The unwinding roller is used to unwind the base film after magnetron sputtering. Guided by the guide roller, the base film enters the electroplating tank to deposit a metal layer to prepare a composite current collector. The composite current collector passes through the guide roller in sequence through a first cleaning structure, an anti-oxidation tank, a second cleaning mechanism, and a pair of rollers, and is then rewound by the rewinding roller.

[0028] In this technical solution, the composite current collector can be cleaned during the coating process, which improves the preparation efficiency of the composite current collector and ensures the yield of the preparation.

[0029] The beneficial effects of this invention are as follows: the first cleaning mechanism washes away the metal particles on the surface of the electroplated composite current collector, preventing the metal particles from adhering to the surface of the composite current collector after entering the anti-oxidation tank; the second cleaning mechanism has nozzles facing the rollers, and the spray angle of the nozzles and the distance between the nozzles and the rollers are controlled, which improves the rinsing effect on the surface of the composite current collector, further reduces the adhesion of metal particles, and reduces the generation of embossed marks on the composite current collector. This invention improves the preparation efficiency of the composite current collector and ensures the yield of the composite current collector. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the water plating equipment of this utility model;

[0031] Figure 2 This is a schematic diagram of the first cleaning mechanism of this utility model;

[0032] Figure 3 This is a schematic diagram of the second cleaning mechanism of this utility model;

[0033] In the diagram: 1. Unwinding roller; 2. Guide roller; 3. Electroplating tank; 4. Composite current collector; 5. First cleaning mechanism; 51. Upper cleaning pipe; 52. Lower cleaning pipe; 53. Universal adjusting pipe; 55. First water inlet pipe; 6. Antioxidant tank; 7. Second cleaning mechanism; 71. Spray nozzle; 72. Second water inlet pipe; 73. Universal pipe; 8. Double rollers; 81. First roller; 82. Second roller; 9. Rewinding roller; 10. Roller cleaning device; 11. Drying oven; 12. Adsorption system; 13. Recovery tank; 14. Coarse filtration device; 15. Fine filtration system; 16. Nozzle. Detailed Implementation

[0034] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0035] Combined with appendix Figure 1As shown, this utility model provides a water plating equipment for preparing composite current collectors, including an unwinding roller 1, which is used to unwind a base film after magnetron sputtering. The base film is deposited with metal in an electroplating tank 3 to prepare a composite current collector. The composite current collector 4 is guided by a guide roller 2 to move to an anti-oxidation tank 6, where the surface of the composite current collector 4 is subjected to anti-oxidation treatment. Then, it is moved to an oven 11 by a pair of rollers 8 and dried in the oven 11 to obtain a dry composite current collector 4. Finally, the composite current collector 4 is wound up by a take-up roller 9.

[0036] In some embodiments, in conjunction with the appendix Figure 1 and 2 As shown, it also includes a first cleaning mechanism 5, which is located at the inlet of the anti-oxidation tank 6 and is used to clean the upper and lower surfaces of the composite current collector 4.

[0037] Specifically, the first cleaning mechanism 5 includes an upper cleaning pipe 51 and a lower cleaning pipe 52. The upper cleaning pipe 51 and the lower cleaning pipe 52 are respectively arranged on both sides of the composite current collector 4 along the thickness direction of the first direction, which is the width direction of the composite current collector 4. The inlets on the same side of the upper cleaning pipe 51 and the lower cleaning pipe 52 are connected to the first water inlet pipe 55. The first water inlet pipe 55 is connected to the anti-oxidation tank 6 through a water pump. Multiple nozzles 16 are arranged on the cleaning pipe 51 and the lower cleaning pipe 52 along the first direction. The nozzles 16 are fan-shaped nozzles, and the nozzles 16 on both sides of the cleaning pipe 51 and the lower cleaning pipe 52 are connected through a universal adjustment pipe 53. At this time, the electroplated product is prepared... When the composite current collector 4 passes through the first cleaning mechanism 5, the first water inlet pipe 55 draws liquid from the anti-oxidation tank 6 and delivers it to the upper cleaning pipe 51 and the lower cleaning pipe 52 to rinse the metal particles on the upper and lower surfaces of the composite current collector 4. Since a large number of loose metal particles are formed at the electroplating clamp position, i.e. the edge of the composite current collector 4, during electroplating in the electroplating tank 3, the nozzles connected to the upper cleaning pipe 51 and the lower cleaning pipe 52 on both sides through the universal adjustment pipe 53 can be adjusted in position and angle to achieve precise rinsing at the electroplating clamp position, clean away the loose metal particles, and prevent the metal particles from being carried into the anti-oxidation tank 6 and deposited on the composite current collector 4.

[0038] In some embodiments, in conjunction with the appendix Figure 1 and 3As shown, a second cleaning mechanism 7 is provided between the anti-oxidation tank 6 and the rollers 8. The second cleaning mechanism 7 includes a spray pipe 71 with multiple nozzles 16 arranged along a first direction. The multiple nozzles 16 are arranged towards the gap between the rollers 8 and are used to rinse the metal particles deposited on the surface of the composite current collector 4 in the anti-oxidation tank 6. The angle formed between the nozzles 16 of the spray pipe 71 and the surface of the composite current collector is 30°-60°, preferably 45°. The distance between the position of the liquid sprayed from the nozzles 16 of the spray pipe 71 on the surface of the composite current collector 4 and the gap between the rollers 8 is 5-10cm, preferably 8cm. At this time, the rinsing effect on the metal particles is the best.

[0039] Specifically, the middle position of the nozzle 71 is connected to the second water inlet pipe 72 through the universal tube 73. The second water inlet pipe 72 is connected to the anti-oxidation tank 6 through a water pump. When the composite current collector passes through the second cleaning mechanism 7, the second water inlet pipe 72 draws the liquid in the anti-oxidation tank 6 to the nozzle 71. By rotating the nozzle 71 using the universal tube 73, the angle between the nozzle 16 and the composite current collector 4 is adjusted and controlled within 30°-60°. At the same time, the distance between the liquid sprayed by the nozzle 16 of the nozzle 71 on the surface of the composite current collector 4 and the gap between the rollers 8 is 5-10cm, thus rinsing the surface of the composite current collector 4. Due to the obstruction of the rollers 8, the liquid will flow along the rollers to both sides, which will further reduce the adhesion of metal particles on the surface of the composite current collector 4, especially at the edge clamping points on both sides. On the other hand, it can also wash the rollers 8 to prevent the metal particles attached to the rollers 8 from being squeezed onto the surface of the composite current collector, thus reducing the generation of embossed marks. Alternatively, a second cleaning mechanism 7 can be symmetrically arranged on the other side of the composite current collector 4 to wash the surface of the composite current collector on the other side.

[0040] In some embodiments, in conjunction with the appendix Figure 1 As shown, the roller 8 includes a first roller 81 and a second roller 82. A roller cleaning device 10 is provided on one side of both the first roller 81 and the second roller 82. The roller cleaning device 10 includes a fixing plate, which is fixed on the frame. The fixing plate is arc-shaped and adapted to the surface of the first roller 81 and the second roller 82. A brush is provided on the inner side of the fixing plate, and the brush contacts the roller surface. The roller cleaning device 10 can clean the metal particles attached to the surface of the roller 8, preventing the metal particles attached to the roller 8 from being squeezed onto the surface of the composite current collector 4, and further reducing the generation of embossed printing.

[0041] In some embodiments, in conjunction with the appendix Figure 1As shown, an adsorption system 12 is provided between the drying oven 11 and the winding roller 9. The adsorption system 12 includes upper and lower adsorption devices, which are respectively arranged on both sides of the composite current collector 4 along the first direction. The upper and lower adsorption devices can be dust collection devices, as long as they have adsorption function. This device is a conventional device, so its structure is not described in detail. After the composite current collector is dried in the drying oven 11, when it passes through the upper and lower adsorption devices, the metal particles on the surface of the dried composite current collector 4 are further adsorbed by the upper and lower adsorption devices to prevent the metal particles from adhering to the surface before winding, and further reduce the generation of embossed marks when the composite current collector 4 is wound.

[0042] In some embodiments, in conjunction with the appendix Figure 1 As shown, a recovery tank 13 is provided below both the first cleaning mechanism 5 and the second cleaning mechanism 7. A coarse filter device 14 (a filter screen) is installed inside the recovery tank 13. A fine filtration system 15 is installed at the outlet of the recovery tank 13, and the recovery tank 13 is connected to the anti-oxidation tank 6 through the fine filtration system 15. The liquid sprayed from the first cleaning mechanism 5 and the second cleaning mechanism 7 is recovered through the recovery tank 13, and larger metal particles mixed in the liquid are filtered out and collected using the filter screen to avoid resource waste. The fine filtration system 15 further filters the fine metal particles in the coarsely filtered liquid. The finely filtered cleaning liquid is then pumped to the anti-oxidation tank, realizing the recycling of the liquid and reducing resource waste.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. A water-plating device for preparing composite current collectors, characterized in that, The application relates to a composite current collector surface anti-oxidation treatment device. The application relates to a composite current collector surface anti-oxidation treatment device. The application relates to a composite current collector surface anti-oxidation treatment device. The application relates to a composite current collector surface anti-oxidation treatment device. The application relates to a composite current collector surface anti-oxidation treatment device.

2. The water plating apparatus for preparing a composite current collector according to claim 1, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

3. The water plating apparatus for preparing a composite current collector according to claim 1, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

4. The apparatus according to claim 3, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

5. The water plating apparatus for preparing a composite current collector according to claim 1 or 2, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

6. The water plating apparatus for preparing a composite current collector according to claim 1, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

7. The apparatus according to claim 1, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

8. The apparatus according to claim 1, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

9. The apparatus according to claim 8, wherein The application relates to a composite current collector surface anti-oxidation treatment device.

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