Integrated compression roller device, composite system, composite current collector production system and composite current collector

Abstract

The utility model discloses an integrated compression roller device, a composite system, a composite current collector production system and a composite current collector, the device comprises a compression roller combination formed by more than two compression roller assemblies, and each compression roller assembly comprises a compression roller and a telescoping mechanism connected with the compression roller; in the direction from the front side to the rear side, the compression roller assemblies in the compression roller combination are arranged in a height decreasing mode. The device can be matched with a winding material for direct pressing, and is convenient for adaptive matching adjustment along with release of a winding material layer for compounding. The pressing time can be prolonged and the pressing quality can be improved on the premise of ensuring continuous proceeding production of the material; and the pressing arrangement of different areas can be conveniently realized according to the material characteristics. And the device can be suitable for compounding ultrathin materials, and compounding is realized on the premise of avoiding transmission of the ultrathin materials, so that a high-quality composite material which is tightly compounded and has a flat surface is obtained. The composite system and the composite current collector production system formed based on the device are simple in structure and convenient to deploy and install, and the obtained composite product has corresponding good performance.

Description

Technical Field

[0001] The utility model relates to the field of composite technology, and more specifically, to an integrated pressing roller device, a composite system, a composite current collector production system and a composite current collector. Background Art

[0002] In the prior art, the production of composite material layers typically involves separately conveying different material layers to a roller pair structure for lamination. For example, in the lamination of two material layers, one material layer typically undergoes surface processing before arriving at the roller pair, while the other layer arrives at the same time. The two layers simultaneously pass through the gap between the upper and lower rollers of the roller pair, where they bond together to form a composite material layer. This type of composite structure is suitable for most composite material production, but it has shortcomings for lamination in some production processes. This is particularly evident in the lamination of thin, easily fractured material layers. For example, in the production of composite current collectors, when the metal foil layer is only a few microns thick, conveying both the substrate and the foil layer to the roller pair for lamination can make it difficult to control the tension of the foil layer to maintain a smooth fit, and it can easily tear during the conveying process, hindering stable and normal production. Weak tension control can affect the surface flatness of the finished composite product, directly impacting its quality. Furthermore, for these scenarios, the traditional roller pair lamination method is also inconvenient to adjust the lamination process to achieve a well-fitted, smooth-surfaced product.

[0003] For this type of material, it is crucial to coordinate with the unwinding roller or carrier roller, such as the cathode roller, that outputs the material layer to directly avoid the transmission path for lamination. Therefore, the existing technology urgently needs a pressing roller device that can coordinate with the release of the wound material layer for direct lamination and can adapt to the lamination process as the wound material layer is released, so as to overcome the shortcomings of the traditional transmission-to-roller lamination method in the existing technology. Utility Model Content

[0004] The utility model aims to overcome at least one of the above-mentioned shortcomings of the prior art and provides an integrated pressing roller device that can cooperate with the winding material to directly press and facilitate adaptive adjustment as the winding material layer is released for compounding.

[0005] The technical solution adopted by the present invention is an integrated pressing roller device, including a pressing roller combination, wherein the pressing roller combination is formed by two or more pressing roller assemblies, and the pressing roller assembly includes a pressing roller and a telescopic mechanism connecting the pressing rollers; and at least in the direction from the front to the back, the pressing roller assemblies in the pressing roller combination are arranged in descending height. The pressing roller assemblies are arranged in descending height and can adapt to the cylindrical side surface of the roll or wound material. When the first material layer moves between the pressing roller combination and the wound material, the pressing roller combination in the pressing roller device can press the first material layer onto the wound second material layer and press down toward one side of the second material layer to achieve adhesion between the first material layer and the second material layer; further, the first material layer and / or the second material layer have adhesiveness. When the pressing roller combination is provided with at least two pressing roller assemblies, at least two areas of the corresponding cylindrical side surface are pressed together. On the one hand, this facilitates extending the pressing time and improving the pressing quality while ensuring the continuous production of the material; on the other hand, it also facilitates the setting of pressing in different areas according to the material characteristics. When the distance between the pressure roller assembly and the contact surface, such as the roller surface, barely changes, the telescopic mechanism maintains and adjusts its telescopic length to ensure a relatively stable pressing pressure. For example, in the case of a cathode roller, for example, where the contact roller produces a metal foil layer, the distance between the pressure roller and the cathode roller barely changes during the lamination process. However, the telescopic mechanism extends to provide pressure not only when pressing is required but also in a wider range of scenarios. For example, when the thickness of the wound material decreases during lamination and release, the diameter of the cylindrical structure containing the loaded wound material decreases. The contact rollers below also include such cylindrical structures. In this case, the telescopic mechanism adjusts its telescopic length appropriately during the production process, adjusting the telescopic length as it is released to maintain contact with the corresponding contact roller surface and ensure a relatively constant downward pressure. Furthermore, the pressure roller components in the pressure roller assembly are arranged in descending height, at least when the telescopic mechanism is retracted. This facilitates the use of the same telescopic mechanism to accommodate pressing at multiple locations on the cylindrical side curve, while also reducing the difficulty of controlling different pressure roller components in the corresponding device control program.

[0006] Furthermore, the integrated pressing roller device is an integrated pressing roller device that cooperates with a resisting roller body to form a composite material. The pressing roller combination is at least used to transmit the first material layer; the surface of the resisting roller body carries the second material layer; the pressing roller combination and the surface of the resisting roller body are configured to jointly press the first material layer and the second material layer to obtain a composite material. Furthermore, the first material layer is a substrate layer with a sticky surface; or, the first material layer is a substrate layer with an adhesive layer coated on the surface. For a thinner second material layer, the first material layer with stickiness can be peeled off from the corresponding roller body after pressing; and the formation of stickiness can be the stickiness of the surface of the first material layer itself, or it can be formed by coating the surface of the first material layer to form an adhesive layer, and the adhesive layer is used to composite the second material layer. Furthermore, the resisting roller body can be a cathode roller; and / or, the second material layer is a foil such as copper foil.

[0007] Furthermore, the telescopic mechanism is configured to allow the corresponding pressure roller to extend and retract in a direction perpendicular to the surface of the abutting roller. The pressure roller under the telescopic mechanism can act perpendicularly on the corresponding abutting surface. In addition to avoiding slippage and other conditions that may be caused by deviations in the direction of action, it is also conducive to accurately detecting the corresponding pressure or tension, thereby facilitating accurate control and maintenance of the pressure required for stable lamination and the extension length of the telescopic mechanism. Furthermore, the pressure roller assembly is arranged on the upper side of the abutting roller. At this time, the part of the wound material to be composited is located on the upper side of the abutting roller. Due to gravity, the material is maintained in an extended state on the surface of the corresponding winding cylinder, which is conducive to obtaining a smooth composite layer and avoiding large gaps and wrinkles at the composite interface. If it is arranged on the lower side, the released wound material may be in a state of being suspended, and some areas may collapse downward due to gravity, which is not conducive to smooth and tight composite. Furthermore, the pressure roller assembly is arranged on the oblique upper side of the abutting roller. That is, the integrated pressure roller device only needs to be partially opposite to the supporting roller body, which can reduce the lateral size of the integrated pressure roller device, and thus reduce the load-bearing length and weight of the corresponding mounting bracket. In addition to reducing costs, it is also conducive to installation, layout and maintenance, and is convenient for operation in conjunction with the shape of the supporting roller body.

[0008] Furthermore, the pressure roller assembly includes three or more pressure roller assemblies, and the pressure roller assemblies in the pressure roller assembly are arranged in an arc shape. Furthermore, in the cross-sectional direction of the pressure roller assembly, the pressure roller assemblies in the pressure roller assembly are arranged in an arc shape. The arc-shaped arrangement of the three or more pressure roller assemblies can further match the side surface of the column structure, further improving the matching effect and controllability.

[0009] Furthermore, the pressure roller assembly is connected to a pressure sensor. Furthermore, the pressure roller assembly is connected to both a pressure sensor and a tension sensor. This facilitates real-time monitoring of the corresponding pressing state and accurate control of the roller movement and pressing process. Furthermore, the pressure roller near the upstream end of the pressure roller assembly serves as the initial pressing roller, while the pressure roller near the downstream end of the pressure roller assembly serves as the final pressing roller. The pressure roller assembly is configured such that the pressure F1 exerted by the initial pressing roller on the abutting roller body exceeds the pressure F2 exerted by the final pressing roller on the abutting roller body. The downward pressure refers to the pressure exerted by the corresponding pressure roller perpendicularly on the surface of the abutting roller body. When all the composite materials reach the preliminary lamination roller for lamination, the preliminary lamination roller provides strong lamination pressure, thereby tightly laminating the composite layer in the initial lamination state, maintaining full extension of the composite materials in the lamination area, and squeezing out any gaps or bubbles that may exist in the composite interface toward the upstream input side, thereby ensuring that the composite interface of the composite layer passing through the preliminary lamination roller is completely lamination and basically contains no obvious bubbles, gaps, etc., thereby improving the lamination quality; while the final lamination roller provides a lamination pressure F2 that is less than F1, which can avoid excessive extension caused by strong tension on both the front and back sides of the composite layer, and avoid wrinkles caused by elastic shrinkage after passing through the lamination area; at the same time, it avoids the continuous accumulation of obvious air gaps, etc., because the composite layer passing through the preliminary lamination roller may still have very small air gaps at the microscopic level that basically do not affect the performance of the composite layer. If the final lamination roller also maintains a strong lamination pressure, it may squeeze the air gap upstream, that is, between the preliminary lamination roller and the final lamination roller. As the production process proceeds, it will continue to accumulate in multiple areas of the finished composite layer to form obvious bubbles or wrinkles, which will significantly affect the quality of the final product. On the other hand, setting F2 < F1 also facilitates the extraction and separation of the composite layer. The finishing press roller has a lower pressing pressure than the upstream press roller, which helps reduce the adhesion of the wound material to the corresponding abutting roller, facilitating the separation of the already laminated wound material from the corresponding roller along the transmission direction. If F2 is a strong pressing pressure, the wound material may easily stick to the corresponding abutting roller as the material moves. As the material is transported, uneven force may cause the composite layer to tear during extraction.

[0010] Furthermore, the maximum extension length of the initial lamination roller's retractable mechanism is greater than that of the final lamination roller. Furthermore, the roller near the upstream end of the lamination roller assembly serves as the initial lamination roller, while the roller near the downstream end of the lamination roller assembly serves as the final lamination roller. The initial lamination roller applies a higher lamination pressure during the initial lamination phase, concentrating the force on the downward pressure area to achieve full lamination while simultaneously eliminating air bubbles. The final lamination roller assists in laminating the composite layer, strengthening its bonding strength and slowly releasing the composite layer, thereby enabling it to separate from the abutting rollers and be guided away.

[0011] Furthermore, one or more transitional pressing rollers are provided between the initial pressing roller and the final pressing roller; furthermore, the pressure F1 of the initial pressing roller on the abutting roller body is greater than the pressure F3 of the transitional pressing roller on the abutting roller body; the pressure F3 of the transitional pressing roller on the abutting roller body is greater than or equal to the pressure F2 of the final pressing roller on the abutting roller body; and the ranges of F1, F2, and F3 are within 0.1N / in to 10N / in, i.e., 0.1N / inch to 10N / inch. Furthermore, the diameter of the pressing rollers in the pressing roller combination ranges from 120 to 200mm. The transitional pressing roller can also at least play an auxiliary pressing role, and preferably, its downward pressure F3 is also less than F1. As an intermediate transitional pressing roller, it can increase the auxiliary pressing position and further improve the composite effect. The transitional pressing roller can cooperate with the initial pressing roller and the final pressing roller to achieve a gradual slowdown of pressing and release.

[0012] Furthermore, the system further includes a decoupling roller, located downstream of the pressure roller assembly, for decoupling the material after it has passed through the pressure roller assembly. Once the material passing through the pressure roller assembly is composited with the wound material on the corresponding abutting roller, the composite material is decoupled via the decoupling roller as the wound material is released, allowing the composite material to be separated from the corresponding abutting roller. The composite layer is then decoupled to downstream production processes, continuing the composite production process.

[0013] Furthermore, the system further includes an inlet roller, positioned upstream of the pressure roller assembly; the inlet roller is used to introduce material to the pressure roller assembly; and the inlet roller is connected to a height adjustment mechanism. Adjusting the height of the inlet roller by means of the height adjustment mechanism adjusts the angle of entry of the material into the pressure roller assembly, thereby enabling adjustments based on actual production needs to suit different usage scenarios. Furthermore, the inlet roller is positioned adjacent to the pressure roller assembly, and the end of the inlet roller is connected to the height adjustment mechanism. Furthermore, the height adjustment mechanism is a screw-type adjustment mechanism that adjusts the vertical position of the inlet roller.

[0014] Furthermore, it also includes a mounting bracket, which includes a support beam and side panels on both sides of the support beam, and the pressure roller assembly is installed between the side panels; and the lower side of the side panel is an inclined surface, and the height of the lower edge of the front side of the side panel is higher than the height of the lower edge of the rear side of the side panel. The support beam and the side panel provide sufficient installation space for the pressure roller assembly; and the shape of the side panel is conducive to matching the oblique upper side of the supporting roller body, so that the pressure roller assembly can also form a decreasing height arrangement in the retracted state. Furthermore, the side panel has a ladder-like structure. Furthermore, when the telescopic mechanism is in the retracted state, the lower edge of the pressure roller is lower than the lower edge of the corresponding position of the side panel. At this time, even if the length of the supporting roller body is greater than the length of the mounting bracket, since the lower edge of the pressure roller is lower than the lower edge of the side panel, it can still match smoothly; there will be no situation where the mounting bracket affects the matching.

[0015] Furthermore, it includes multiple roller combinations; and the roller spacing between the roller combinations is different; and / or the maximum extension length of the telescopic mechanism is different between the roller combinations; and / or the roller diameter is different between the roller combinations; and / or the height difference between adjacent rollers is different between the roller combinations; and / or the roller surface elasticity is different between the roller combinations; and / or the roller surface material is different between the roller combinations; and / or the roller surface roughness is different between the roller combinations. Further, within the roller combination, at least two roller assemblies have different maximum extension lengths of the telescopic mechanism; and / or within the roller combination, at least two roller assemblies have different roller diameters; at least two roller assemblies have different roller surface elasticity; and / or within the roller combination, at least two roller assemblies have different roller surface material; and / or within the roller combination, at least two roller assemblies have different roller surface roughness. When multiple roller combinations are provided, the integrated roller device of the present application can also adapt to various scenarios such as different sizes of abutting rollers, different pressing spacings, and different material surface requirements. The spacing between the rollers in each roller combination is different. For example, if there are two roller combinations, and the spacing between the roller assemblies in the first roller combination is larger than the spacing between the roller assemblies in the second roller combination, if the diameter of the abutting roller body is large and a larger spacing between the roller assemblies is required, the first roller combination can be used, and the telescopic mechanism telescopes the corresponding rollers to act on the surface of the abutting roller body, while the roller assemblies in other roller combinations do not contact the abutting roller body. The maximum extension lengths of the telescopic mechanisms in the roller combinations are different. Based on the installation layout and the spacing between the abutting roller body and the integrated roller device, at least roller combinations with different maximum extension lengths of the telescopic mechanisms can be selected to match the abutting roller body. If the roller diameters in the roller combinations are different, at least the corresponding roller combination can be selected based on the laminating requirements of different laminating positions. The height differences between adjacent rollers in the roller combinations are different, which at least reflects the differences in the density or laminating direction of adjacent laminating areas. The elasticity of the roller surfaces of different roller combinations is different, the materials of the roller surfaces of different roller combinations are different, and the roughness of the roller surfaces of different roller combinations are different. At least the corresponding roller combination can be selected based on the requirements of the roller surfaces of different materials.

[0016] Another object of the present invention is to provide a composite system comprising the aforementioned integrated pressing roller device and a cathode roller; the integrated pressing roller device is configured to cooperate with the cathode roller surface. The composite system is simple in structure, and the integrated pressing roller device can fully adhere to the cathode roller and composite the foil material on the cathode roller surface, avoiding tearing caused by the transmission of micron-thick foil material, and the resulting composite material has a smooth surface.

[0017] Another object of the present invention is to provide a composite current collector production system, including the aforementioned integrated pressing roller device; or, the aforementioned composite system, which is convenient to use and facilitates the production of a smooth and well-fitting composite current collector.

[0018] Another object of the present invention is to provide a multi-layer composite current collector produced by the aforementioned composite current collector production system. The multi-layer composite current collector has a tightly bonded composite material layer, is not easily separated, and has a smooth composite interface; and has good composite current collector performance.

[0019] Compared with the prior art, the beneficial effects of the present application are: the integrated pressing roller device provided can be directly pressed in conjunction with the winding material, and can be easily adjusted to composite with the release of the winding material layer. It can extend the pressing time and improve the pressing quality under the premise of ensuring the continuous production of the material; it is also convenient to realize the pressing setting of different areas according to the material characteristics; and it has a wide range of applicable scenarios. It is worth noting that the integrated pressing roller device based on the present application can be applied to the composite of ultra-thin materials, and composite can be achieved under the premise of avoiding the long transmission path of ultra-thin materials, so as to obtain high-quality composite materials with tight composite and smooth surface. The composite system and composite current collector production system formed based on the integrated pressing roller device are simple in structure, easy to deploy and install, and the resulting composite products have corresponding good performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the integrated pressure roller device of this application (1);

[0021] Figure 2 This is a schematic diagram of the structure of the integrated pressure roller device of this application (II);

[0022] Figure 3 This is a schematic diagram of the structure of the integrated pressure roller device of this application (III);

[0023] Figure 4 This is a schematic diagram of the composite system structure of this application (I);

[0024] Figure 5 This is a schematic diagram of the composite system structure of this application (II);

[0025] Figure 6 This is a schematic diagram of the structure of the initial pressing roller, transition pressing roller, and final pressing roller of the integrated pressing roller device of this application;

[0026] Figure 7 This is a schematic diagram of the integrated pressure roller device and the supporting roller body of the present application;

[0027] Description of the drawings: tension sensor 1141, composite system 3000, integrated pressure roller device 3100, inlet roller 3101, height adjustment mechanism 3102, guide roller 3103, support beam 3111, side plate 3112, pressure roller combination 3120, pressure roller 31211, preliminary pressing roller 3121A, final pressing roller 3121B, transition pressing roller 3121C, telescopic mechanism 31212, supporting roller body 4100, first material layer 5100, second material layer 5200, composite layer 5300. DETAILED DESCRIPTION

[0028] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention. If specific conditions are not specified in the embodiments, they are carried out according to conventional conditions or the conditions recommended by the manufacturer. If the manufacturer is not specified for the reagents or instruments used, they are all conventional products that can be purchased commercially.

[0030] Example 1

[0031] This embodiment discloses an integrated pressure roller device 3100, including a pressure roller assembly 3120. The pressure roller assembly 3120 is formed by two or more pressure roller assemblies, each of which includes a pressure roller 31211 and a telescopic mechanism 31212 connected to the pressure roller 31211. In the direction from the front to the back, the pressure roller assemblies in the pressure roller assembly 3120 are arranged in decreasing height. The pressure roller assemblies are arranged in decreasing height to adapt to the cylindrical side surface of the roll or wound material. When the pressure roller assembly 3120 is provided with at least two pressure roller assemblies, at least two areas of the corresponding cylindrical side surface are pressed together. Figure 7As shown, when the first material layer 5100 passes between the pressure roller assembly 3120 and the wound material, the pressure roller assembly 3120 in the pressure roller assembly presses the first material layer 5100 onto the wound second material layer 5200 and presses down on one side of the second material layer 5200 to achieve adhesion between the first and second material layers 5100 and 5200. In this embodiment, the first material layer 5100 is adhesive, allowing for direct lamination with the second material layer 5200. The pressure roller components in the pressure roller assembly 3120 are arranged in descending heights, and at least when the telescopic mechanism 31212 is in its retracted state, the telescopic mechanism 31212 also exhibits a corresponding descending height arrangement. Specifically, in this embodiment, to enhance the lamination effect, the telescopic mechanism 31212 is configured to cause the corresponding pressure roller 31211 to extend and retract in a direction perpendicular to the surface of the abutting roller body 4100. The pressure roller 31211 under the telescopic mechanism 31212 can act perpendicularly on the corresponding abutting surface. The pressure roller assembly is also connected to a tension sensor 1141, which is convenient for monitoring the corresponding tension state when the material rolls on the pressure roller assembly 3120 to ensure the smoothing and compounding effect.

[0032] The integrated pressing roller assembly 3100 of this embodiment is designed to cooperate with a supporting roller body 4100 for composite material. The pressing roller assembly 3120 is used to convey at least a first material layer 5100. The supporting roller body 4100 carries a second material layer 5200 on its surface. The pressing roller assembly 3120 and the supporting roller body 4100 are configured to jointly press the first material layer 5100 and the second material layer 5200 to form a composite material. The first material layer 5100 is a substrate layer having an adhesive surface, or a substrate layer coated with an adhesive layer. For thinner second material layers 5200, the adhesive first material layer 5100 can be peeled off from the corresponding roller body after lamination. The adhesiveness can be achieved by the inherent adhesiveness of the first material layer 5100 itself or by coating the first material layer 5100 with an adhesive layer, which is then used to form a composite material with the second material layer 5200. The abutting roller 4100 can be a cathode roller; the second material layer 5200 can be a foil material such as copper foil. For example, when the first material layer 5100 is transmitted to the lower side of the integrated pressing roller device 3100, the first material layer 5100 is continuously moved downstream by the lower surface of the pressing roller assembly 3120. The integrated pressing roller device 3100 is located obliquely above the cathode roller, and the cathode roller forms the second material layer 5200 on its surface. When lamination is required, the pressing roller assembly 3120 of the integrated pressing roller device 3100 presses the first material layer 5100 downward toward the second material layer 5200 to adhere the first material layer 5100 and the second material layer 5200. As the first material layer 5100 continues to be driven, the second material layer 5200 on the cathode roller continues to form and be driven. The second material layer 5200, which has been adhered to the first material layer 5100, moves with the drive of the first material layer 5100 and peels off the surface of the cathode roller.

[0033] In this embodiment, the pressure roller 31211 near the upstream end of the pressure roller combination 3120 is the preliminary pressure roller 3121A, and the pressure roller 31211 near the downstream end of the pressure roller combination 3120 is the finishing pressure roller 3121B. The pressure roller combination 3120 is configured so that the pressure F1 of the preliminary pressure roller 3121A on the abutting roller body 4100 is greater than the pressure F2 of the finishing pressure roller 3121B on the abutting roller body 4100. When all the composite materials arrive at the preliminary pressing roller 3121A for compounding, the preliminary pressing roller 3121A provides strong pressing pressure, thereby tightly pressing the composite layer 5300 in the initial bonding state, maintaining sufficient stretch of the composite materials in the pressing area, and squeezing out any gaps or bubbles that may exist in the composite interface toward the upstream input side, thereby ensuring that the composite interface of the composite layer 5300 passing through the preliminary pressing roller 3121A is completely bonded and basically contains no obvious bubbles, gaps, etc., thereby improving the compounding quality; while the finishing pressing roller 3121B provides a pressing pressure F2 that is less than F1, which can avoid excessive stretching caused by strong tension on the front and back sides of the composite layer 5300, and avoid wrinkles caused by elastic contraction after passing through the pressing section; F2 < F1 is also conducive to the derivation and separation of the composite layer 5300, and the finishing pressing roller 3121B has a lower pressing pressure than the upstream, which is conducive to reducing the degree of adhesion of the winding material on the corresponding abutting roller body 4100, and facilitates the separation of the compounded winding material from the corresponding roller body along the transmission direction.

[0034] To enhance the lamination effect, in this embodiment, the pressure roller assembly 3120 includes three pressure roller assemblies, which are arranged in an arc shape. That is, in the cross-sectional direction of the pressure roller assembly 3120, the pressure roller assemblies in the pressure roller assembly 3120 are arranged in an arc shape. This arc-shaped arrangement of the three pressure roller assemblies further matches the side surface of the column structure.

[0035] At least one transition laminating roller 3121C is provided between the initial laminating roller 3121A and the final laminating roller 3121B. The pressure F1 exerted by the initial laminating roller 3121A on the abutting roller body 4100 is greater than the pressure F3 exerted by the transition laminating roller 3121C on the abutting roller body 4100. The pressure F3 exerted by the transition laminating roller 3121C on the abutting roller body is greater than or equal to the pressure F2 exerted by the final laminating roller 3121B on the abutting roller body. Furthermore, the ranges of F1, F2, and F3 are within the range of 0.1N / in to 10N / in, i.e., 0.1N / inch to 10N / inch. The transition laminating roller 3121C can at least assist in laminating. Preferably, its downward pressure F3 is also less than F1. As the intermediate transition laminating roller 3121C, it can increase the number of auxiliary laminating positions, further improving the laminating effect. This provides a more diverse adjustment process, facilitating selective adjustment in accordance with material properties and laminating requirements.

[0036] In this embodiment, to smoothly decouple the composite layer 5300, a decoupling roller 3103 is also included. The decoupling roller 3103 is positioned downstream of the press roller assembly 3120. The decoupling roller 3103 is used to decouple the material after it has passed through the press roller assembly 3120, that is, to decouple the already composited portion. The composite layer 5300 is then decoupled to downstream production processes.

[0037] The integrated pressure roller assembly 3100 also includes an inlet roller 3101, located upstream of the pressure roller assembly 3120. The inlet roller 3101 is used to introduce material into the pressure roller assembly 3120 and is connected to a height adjustment mechanism 3102. The inlet roller 3101 is located adjacent to the pressure roller assembly 3120, and the end of the inlet roller 3101 is connected to the height adjustment mechanism 3102. The height adjustment mechanism 3102 is a screw adjustment mechanism that adjusts the vertical position of the inlet roller 3101.

[0038] Regarding the arrangement of the pressure roller assembly 3120, the integrated pressure roller device 3100 of this embodiment further includes a mounting bracket comprising a support beam 3111 and side panels 3112 on either side of the support beam 3111. The pressure roller assembly 3120 is mounted between the side panels 3112. The side panels 3112 have an inclined lower surface, with the front lower edge of the side panels 3112 at a higher height than the rear lower edge of the side panels 3112. Specifically, the side panels 3112 have a ladder-like structure. When the telescopic mechanism 31212 is retracted, the lower edge of the pressure roller 31211 is lower than the lower edge of the corresponding position on the side panels 3112.

[0039] Example 2

[0040] This embodiment discloses an integrated pressing roller device 3100, which differs from the first embodiment only in that it includes multiple pressing roller assemblies 3120. Specifically, different configurations of pressing rollers 31211 and pressing roller assemblies 3120 can be set according to actual needs.

[0041] Including: the spacing between the pressure rollers 31211 in the pressure roller combinations 3120 is different; and / or, the maximum extension length of the telescopic mechanism 31212 in the pressure roller combinations 3120 is different; and / or, the diameter of the pressure rollers 31211 in the pressure roller combinations 3120 is different; and / or, the height difference between adjacent pressure rollers 31211 in the pressure roller combinations 3120 is different; and / or, the surface elasticity of the pressure rollers 31211 in the pressure roller combinations 3120 is different; and / or, the surface material of the pressure rollers 31211 in the pressure roller combinations 3120 is different; and / or, the surface roughness of the pressure rollers 31211 in the pressure roller combinations 3120 is different. Furthermore, within the roller assembly 3120, at least two roller assemblies may have different maximum extension lengths of their telescopic mechanisms 31212; and / or, within the roller assembly 3120, at least two roller assemblies may have different roller diameters of their rollers 31211; at least two roller assemblies may have different surface elasticities of their rollers 31211; and / or, at least two roller assemblies may have different surface materials of their rollers 31211; and / or, at least two roller assemblies may have different surface roughnesses of their rollers 31211. When multiple roller assemblies 3120 are provided, the integrated roller device 3100 of the present application can also accommodate various scenarios, such as different sizes of abutting rollers 4100, different lamination spacings, and different surface material requirements. The spacing between the pressure rollers 31211 of the pressure roller assemblies 3120 varies. For example, if there are two pressure roller assemblies 3120, and the spacing between the pressure roller assemblies in the first pressure roller assembly 3120 is greater than the spacing between the pressure roller assemblies in the second pressure roller assembly 3120, if the diameter of the abutting roller body 4100 is large and a larger spacing between the pressure roller assemblies is required, the first pressure roller assembly 3120 can be used. The telescopic mechanism 31212 telescopes the corresponding pressure roller 31211 to act on the surface of the abutting roller body 4100, while the pressure roller assemblies in the other pressure roller assemblies 3120 do not contact the abutting roller body 4100. The maximum extension lengths of the telescopic mechanism 31212 vary between the pressure roller assemblies 3120. Based on the installation layout and the spacing between the abutting roller body 4100 and the integrated pressure roller device 3100, at least pressure roller assemblies 3120 with different maximum extension lengths of the telescopic mechanism 31212 can be selected to match the abutting roller body 4100. If the diameters of the rollers 31211 differ between the roller assemblies 3120, then the corresponding roller assemblies 3120 can be selected based on the requirements for laminating at different laminating locations. If the height differences between adjacent rollers 31211 differ between the roller assemblies 3120, then this at least reflects the differences in requirements for the density or laminating direction of adjacent laminating areas. If the surface elasticity, material, or roughness of the rollers 31211 differ between the roller assemblies 3120, then the corresponding roller assemblies 3120 can be selected based on the requirements for roller surfaces of different materials.

[0042] Example 3

[0043] This embodiment discloses a composite system 3000, comprising the aforementioned integrated pressing roller device 3100 and a cathode roller. The integrated pressing roller device 3100 is configured to cooperate with the cathode roller surface. Specifically, the cathode roller is the aforementioned abutting roller body 4100 that cooperates with the integrated pressing roller device 3100. The composite system 3000 is simple in structure, and the integrated pressing roller device 3100 can fully conform to the cathode roller and laminate the foil material on the cathode roller surface, avoiding tearing caused by the transmission of micron-thick foil material. The resulting composite material has a smooth surface.

[0044] Example 4

[0045] This embodiment discloses a composite current collector production system, including the aforementioned integrated pressing roller device 3100; or, the aforementioned composite system 3000. It is convenient to use and is conducive to producing a smooth and well-fitting composite current collector.

[0046] Example 5

[0047] This embodiment discloses a multilayer composite current collector produced using the aforementioned composite current collector production system. The multilayer composite current collector can be a five-layer structure that undergoes two layers of lamination, namely, a film layer is symmetrically provided with an adhesive layer and a foil layer, with the adhesive layer positioned between the foil layer and the film layer. The composite material layers are tightly bonded, resisting separation, and the composite interface is smooth, resulting in excellent composite current collector performance.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An integrated pressure roller device, characterized in that: It includes a pressure roller combination, which is formed by two or more pressure roller assemblies. The pressure roller assembly includes a pressure roller and a telescopic mechanism connected to the pressure roller; and at least in the direction from the front to the rear, the pressure roller assemblies in the pressure roller combination are arranged in descending height.

2. The integrated pressure roller device according to claim 1, characterized in that: The pressure roller combination includes more than three pressure roller components, and the pressure roller components in the pressure roller combination are arranged in an arc shape.

3. The integrated pressing roller device according to claim 1, characterized in that: It also includes a guide roller, which is arranged downstream of the pressure roller combination; and the guide roller is used to guide away the material after passing through the pressure roller combination.

4. The integrated pressing roller device according to any one of claims 1 to 3, characterized in that: It also includes an introduction roller, which is arranged upstream of the pressure roller combination; the introduction roller is used to introduce materials into the pressure roller combination; and the introduction roller is connected to a height adjustment mechanism.

5. The integrated pressing roller device according to any one of claims 1 to 3, characterized in that: It also includes a mounting bracket, which includes a support beam and side plates on both sides of the support beam, and the pressure roller assembly is installed between the side plates; and the lower side of the side plate is a slope, and the height of the lower edge of the front side of the side plate is higher than the height of the lower edge of the rear side of the side plate.

6. The integrated pressing roller device according to any one of claims 1 to 3, characterized in that: The pressure roller assembly is also connected to a pressure sensor.

7. The integrated pressure roller device according to claim 6, characterized in that: The pressure roller assembly is connected to a pressure sensor and a tension sensor at the same time.

8. The integrated pressure roller device according to claim 6, characterized in that: The pressure rollers include a preliminary pressure roller and a finishing pressure roller, wherein the preliminary pressure roller is the pressure roller close to the upstream end of the pressure roller combination, and the finishing pressure roller is the pressure roller close to the downstream end of the pressure roller combination. The pressure roller combination is configured so that the pressure F1 of the preliminary pressure roller on the abutting roller body is greater than the pressure F2 of the finishing pressure roller on the abutting roller body.

9. The integrated pressure roller device according to claim 8, characterized in that: The ultimate stretching length of the telescopic mechanism connected to the preliminary pressing roller is greater than the ultimate stretching length of the telescopic mechanism connected to the finishing pressing roller.

10. The integrated pressing roller device according to any one of claims 1 to 3, characterized in that: It includes multiple pressure roller combinations; and the pressure roller spacing between the pressure roller combinations is different; and / or, the maximum extension length of the telescopic mechanism between the pressure roller combinations is different; and / or, the pressure roller diameters between the pressure roller combinations are different; and / or, the height difference between adjacent pressure rollers between the pressure roller combinations is different; and / or, the pressure roller surface elasticity between the pressure roller combinations is different; and / or, the pressure roller surface material between the pressure roller combinations is different; and / or, the pressure roller surface roughness between the pressure roller combinations is different.

11. A composite system, characterized in that: The invention comprises the integrated pressure roller device and the cathode roller according to any one of claims 1 to 10; the integrated pressure roller device is arranged in conjunction with the roller surface of the cathode roller.

12. A composite current collector production system, characterized in that: The invention comprises the integrated pressing roller device according to any one of claims 1 to 10; or the composite system according to claim 11.

13. A composite current collector, characterized in that: Produced by the composite current collector production system according to claim 12.

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