Copper foil production equipment

Abstract

The utility model provides a copper foil production equipment, including: an equipment body, the equipment body having an electrolytic cell; a cathode roller, the cathode roller is rotatably arranged in the electrolytic cell, and a part of the structure extends out from the electrolyte in the electrolytic cell; a protective cover plate, the protective cover plate is arranged on the outside of the cathode roller, the protective cover plate is opposite to a part of the surface of the cathode roller along the circumferential direction, and the protective cover plate is constructed to radiate heat to the cathode roller to adjust the roller surface temperature of the cathode roller. The copper foil production equipment of the utility model realizes effective control of the copper foil production environment, can effectively prevent dust impurities in the air from falling on the copper foil, ensures the cleanliness of the copper foil production environment, and can also shorten the preheating time of the cathode roller to avoid crystallization of the electrolyte due to the low roller surface temperature of the cathode roller, thereby better ensuring the product quality of the copper foil.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic copper foil production, in particular to copper foil production equipment. Background Art

[0002] Copper foil, as the negative electrode current collector and active material carrier of lithium batteries, is one of the important materials for the production of new energy lithium batteries. The foil machine is the core equipment for producing copper foil. Copper ions are reduced in the electrolyte and deposited on the cathode roller, and then peeled off to form copper foil.

[0003] In addition to the production process, the factors that affect the performance and appearance of copper foil also include the production environment. At present, in the production process of copper foil, the production process can be accurately controlled, but there is still room for improvement in the control of the production environment, such as ambient temperature and cleanliness. When produced at a relatively low ambient temperature, the electrolyte on the cathode roller will crystallize due to the low temperature, and the cathode roller itself will also cause defects in the production of copper foil due to cooling; when the environmental cleanliness is low and there are impurities such as dust, inclusions will form in the copper foil, causing it to be scrapped. Utility Model Content

[0004] In view of the above problems, the utility model provides a copper foil production device, which can effectively control the temperature and cleanliness of the copper foil production environment to ensure the quality of the copper foil.

[0005] The utility model provides a copper foil production device, comprising: an equipment body, the equipment body having an electrolytic cell; a cathode roller, the cathode roller is rotatably arranged in the electrolytic cell, and a part of the structure extends out from the electrolyte in the electrolytic cell; a protective cover plate, the protective cover plate is arranged on the outer side of the cathode roller, the protective cover plate is opposite to a part of the surface of the cathode roller along the circumferential direction, and the protective cover plate is constructed to radiate heat to the cathode roller to adjust the roller surface temperature of the cathode roller.

[0006] According to the copper foil production equipment of the utility model, by setting a protective cover plate on the main body of the equipment, the protective cover plate is set on the outer side of part of the surface of the cathode roller, so that the protective cover plate can effectively prevent dust impurities in the air from falling on the copper foil without affecting the operation of other components, thereby ensuring the cleanliness of the copper foil production environment and avoiding the scrapping of copper foil due to inclusions; in addition, since the protective cover plate can adjust the roller surface temperature of the cathode roller, the roller surface of the cathode roller can be adjusted to a suitable temperature, shortening the preheating time of the cathode roller, avoiding crystallization of the electrolyte due to the low roller surface temperature of the cathode roller, and preventing the copper foil from being defective due to the low roller surface temperature of the cathode roller. In this way, effective control of the copper foil production environment is achieved, and the product quality of the copper foil can be better guaranteed.

[0007] In some embodiments, the protective cover includes: a cover body, the cover body is connected to the device body; and a heating module, the heating module is arranged on a side of the cover body facing the cathode roller to heat the cathode roller.

[0008] In some embodiments, the cover plate body is in an arc shape adapted to the cathode roller.

[0009] In some embodiments, the roller surface of the cathode roller includes a plurality of areas to be heated, the heating module includes a plurality of heating elements corresponding to the plurality of areas to be heated, and the plurality of heating elements operate independently of each other to independently heat the corresponding areas to be heated.

[0010] In some embodiments, the protective cover plate further includes: a temperature sensing device, wherein the temperature sensing device is disposed on the cover plate body, and the temperature sensing device is multiple and corresponds to the area to be heated, and the temperature sensing device is used to sense the temperature of the area to be heated corresponding to the cathode roller, and the heating element adjusts the heating power according to the sensing result of the corresponding temperature sensing device.

[0011] In some embodiments, the protective cover further includes: a heating plate, which is disposed on a side of the heating module facing the cathode roller, and is used to evenly transfer heat from the heating module to different parts of the cathode roller surface.

[0012] In some embodiments, the heating plate is a carbon crystal heating plate.

[0013] In some embodiments, the protective cover further includes: a heat insulation layer, wherein the heat insulation layer is disposed between the cover body and the heating module.

[0014] In some embodiments, the protective cover also includes: a purge device, wherein there are two purge devices, which are respectively arranged at the two ends of the cover body along the axial direction of the cathode roller, and the purge device is suitable for blowing hot air to the end faces of the cathode roller along the axial direction.

[0015] In some embodiments, a heating chamber is jointly defined between the heat insulation layer and the cover plate body, and the heating chamber has air outlets at both ends along the axial direction of the cathode roller, and the two purge devices are respectively arranged at the two air outlets, and the two purge devices are configured to guide the hot air in the heating chamber to the two ends of the cathode roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a copper foil production device according to an embodiment of the utility model from one angle;

[0018] Figure 2 It is a structural schematic diagram of the copper foil production equipment of another embodiment of the utility model from another angle;

[0019] Figure 3 It is a schematic structural diagram of a protective cover plate according to an embodiment of the utility model.

[0020] Description of reference numerals:

[0021] 100-Copper foil production equipment;

[0022] 1- Equipment body; 11- Electrolytic cell;

[0023] 2- cathode roller;

[0024] 3-protective cover; 31-cover body; 32-heating module; 33-heating plate; 34-insulation layer;

[0025] 4-purge device; 41-air outlet. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of this application.

[0027] Copper foil is one of the important materials for the production of new energy lithium batteries as the negative electrode current collector and active material carrier of lithium batteries. The foil machine is the core equipment for the production of copper foil. Copper ions are reduced in the electrolyte and deposited on the cathode roller, and then peeled off to form copper foil. In addition to the production process, the factors that affect the performance and appearance of copper foil also include the production environment. At present, in the production process of copper foil, the production process can be accurately controlled, but there is still room for improvement in the control of the production environment, such as ambient temperature and cleanliness. When produced at a relatively low ambient temperature, the electrolyte on the cathode roller will crystallize due to the low temperature, and the cathode roller itself will also cause defects in the production of copper foil due to cooling; when the environmental cleanliness is low and there are impurities such as dust, inclusions will form in the copper foil, causing it to be scrapped.

[0028] In view of this, the utility model provides a copper foil production equipment, by arranging a protective cover plate on the main body of the equipment, the protective cover plate is arranged on the upper side of a part of the surface of the cathode roller, so that the protective cover plate can effectively prevent dust impurities in the air from falling on the copper foil without affecting the operation of other components, thereby ensuring the cleanliness of the copper foil production environment and avoiding the copper foil from being scrapped due to inclusions; in addition, since the protective cover plate can adjust the roller surface temperature of the cathode roller, the roller surface of the cathode roller can be adjusted to a suitable temperature, thereby avoiding crystallization of the electrolyte due to the low roller surface temperature of the cathode roller, and also preventing the copper foil from being defective due to the low roller surface temperature of the cathode roller. In this way, effective control of the copper foil production environment is achieved, and the product quality of the copper foil can be better guaranteed.

[0029] Reference below Figure 1-Figure 3 A copper foil production apparatus 100 according to an embodiment of the present invention is described.

[0030] Combination Figure 1 and Figure 2 The copper foil production equipment 100 of this embodiment may be a foil production machine for producing copper foil by electrolysis. The copper foil production equipment 100 may include: an equipment body 1, a cathode roller 2 and a protective cover plate 3.

[0031] Specifically, the equipment body 1 has an electrolytic cell 11, which contains electrolyte. The cathode roller 2 is rotatably arranged in the electrolytic cell 11, and part of the structure extends from the electrolyte in the electrolytic cell 11. When the cathode roller 2 rotates, the copper ions in the electrolyte are reduced to form copper foil on the roller surface of the cathode roller 2.

[0032] The protective cover plate 3 is arranged on the main body 1 of the equipment, and the protective cover plate 3 is arranged on the outside of the cathode roller 2. The protective cover plate 3 is opposite to the partial surface of the cathode roller 2 along the circumferential direction. In other words, the protective cover plate 3 is arranged on the upper side of the electrolytic cell 11, but the protective cover plate 3 does not completely cover the electrolytic cell 11, but only covers a part of the electrolytic cell 11. It can be understood that since the cathode roller 2 is usually immersed in the electrolyte in most of the height direction (i.e., the radial direction of the cathode roller 2), the protective cover plate 3 of this embodiment is mainly arranged on the upper side of the part of the outer peripheral surface of the cathode roller 2 exposed upward in the electrolyte to prevent dust and impurities in the air from falling into the copper foil, forming inclusions and causing scrapping. The upper side space corresponding to the remaining part of the outer surface not covered by the protective cover plate 3 is mainly used to avoid other components of the copper foil production equipment 100, and as an observation window for observing the copper foil production conditions on the cathode roller 2.

[0033] The protective cover plate 3 can be constructed to radiate heat to the cathode roller 2 to adjust the roller surface temperature of the cathode roller 2. For example, a heating device can be provided on the protective cover plate 3 to provide a heat source for the cathode roller 2. In addition, heat can be transferred between the protective cover plate 3 and the cathode roller 2 through air. Adjusting the roller surface of the cathode roller 2 to a suitable temperature through the protective cover plate 3 helps to shorten the preheating time of the cathode roller 2. For example, the preheating time can be shortened to 40min-60min. Since there is no contact between the protective cover plate 3 and the cathode roller 2, the protective cover plate 3 does not directly perform contact heating on the roller surface of the cathode roller 2, which can avoid the occurrence of excessively rapid oxidation of the cathode roller 2 and effectively avoid the problem of copper foil inclusion caused by electrolyte precipitation due to the excessively low roller surface temperature of the cathode roller 2.

[0034] According to the copper foil production equipment 100 of the embodiment of the utility model, by setting a protective cover plate 3 on the equipment body 1, the protective cover plate 3 is set on the upper side of the partial surface of the cathode roller 2, so that the protective cover plate 3 can effectively prevent dust impurities in the air from falling on the copper foil without affecting the operation of other components, thereby ensuring the cleanliness of the copper foil production environment and avoiding the scrapping of copper foil due to inclusions; in addition, since the protective cover plate 3 can adjust the roller surface temperature of the cathode roller 2, the roller surface of the cathode roller 2 can be adjusted to a suitable temperature, shortening the preheating time of the cathode roller 2, avoiding crystallization of the electrolyte due to the low roller surface temperature of the cathode roller 2, and preventing the copper foil from being defective due to the low roller surface temperature of the cathode roller 2. In this way, effective control of the copper foil production environment is achieved, and the product quality of the copper foil can be better guaranteed.

[0035] In some embodiments, in combination Figure 1 and Figure 3, the protective cover plate 3 may include: a cover plate body 31 and a heating module 32. Specifically, the cover plate body 31 is connected to the device body 1, and the cover plate body 31 can provide installation support for the heating module 32. The heating module 32 is arranged on the side of the cover plate body 31 facing the cathode roller 2 to heat the cathode roller 2. In other words, the cover plate body 31 is arranged on the side of the heating module 32 facing away from the cathode roller 2 to shield dust and support the heating module 32. Moreover, the distance between the heating module 32 and the cathode roller 2 is closer, which can more efficiently regulate the surface temperature of the cathode roller 2. In addition, the overall structure of the protective cover plate 3 is relatively simple, and it is easy to manufacture and implement.

[0036] Optionally, the device body 1 can be formed with the cover body 31, so that the installation stability of the cover body 31 is better and the heating module 32 can be better supported; or the device body 1 can be connected to the cover body 31 by plugging, bolting, clamping, etc. In this way, the connection method between the device body 1 and the cover body 31 is relatively simple and easy to assemble and disassemble. Of course, the utility model is not limited to this, and the specific connection method and connection structure between the cover body 31 and the device body 1 can be reasonably selected according to actual needs.

[0037] In some embodiments, in combination Figure 1 and Figure 3 The cover plate body 31 is in an arc shape that matches the cathode roller 2. In this way, the cover plate body 31 can be parallel to the outer circumference of the cathode roller 2, which is conducive to keeping the distance between each part of the heating module 32 and the outer circumference of the cathode roller 2 consistent, so as to achieve uniform heating of the surface of the cathode roller 2.

[0038] In some embodiments, the curvature of the cover plate body 31 is 1 / 5-1 / 3 of the circumference curvature. For example, the curvature of the cover plate body 31 can be 1 / 5, 1 / 4 or 1 / 3 of the circumference curvature. Of course, the present invention is not limited thereto. The ratio of the curvature of the cover plate body 31 to the circumference curvature can be reasonably selected within the above range according to actual needs. In this way, it can be avoided that when the curvature of the cover plate body 31 is too small, for example, less than 1 / 5, it cannot effectively block the dust, and the heating efficiency of the surface of the cathode roller 2 is low. In addition, it can also be avoided that when the curvature of the cover plate body 31 is too large, for example, greater than 1 / 3, it is inconvenient for other components of the copper foil production equipment 100 to work, and the reserved copper foil observation window is too small, which is not convenient for observation.

[0039] In some embodiments, the roller surface of the cathode roller 2 may include multiple areas to be heated, and the multiple areas to be heated may be arranged in sequence along the axial direction of the cathode roller 2, or may be arranged in sequence along the circumferential direction of the cathode roller 2. Of course, the multiple areas to be heated may also be arranged in other ways. The heating module 32 may include multiple heating elements, and the multiple elements correspond to the multiple areas to be heated. The multiple heating elements operate independently of each other to independently heat the corresponding areas to be heated. In this way, the corresponding heating elements can be independently controlled according to the temperatures of different areas to be heated on the roller surface to fully ensure that the temperatures of the various areas to be heated are consistent, improve the efficiency and effect of temperature regulation, and help improve the quality of copper foil products.

[0040] In some embodiments, the protective cover plate 3 may further include a temperature sensing device (not shown). Specifically, the temperature sensing device may be an infrared sensor or other sensing device. The temperature sensing device is provided on the cover plate body 31, and there are multiple temperature sensing devices corresponding to the areas to be heated. The temperature sensing device is used to sense the temperature of the corresponding areas to be heated on the cathode roller 2, and the heating element adjusts the heating power according to the sensing results of the corresponding temperature sensing devices. For example, there may be five temperature sensing devices, that is, five temperature sensing points are provided on the protective cover plate 3, one of which is provided at the center of the protective cover plate 3, and the other four are respectively provided at the four corners of the protective cover plate 3. Through the five temperature sensing devices, the temperatures of different areas to be heated on the roller surface of the cathode roller 2 are accurately detected and fed back, so as to obtain the heat distribution state of the roller surface of the cathode roller 2 as a whole, so as to provide a control basis for adjusting the heating power of the heating element, so as to ensure that the temperature of the roller surface of the cathode roller 2 is consistent and stable to the greatest extent.

[0041] In some embodiments, the axial length of either the heating module 32 or the cover body 31 of the cathode roller 2 is adapted to the length of the cathode roller 2. In this way, on the one hand, it can ensure that the cover body 31 can completely cover the cathode roller 2 in the axial direction to prevent dust impurities in the air from falling into the copper foil. On the other hand, the heating module 32 can heat each area of ​​the cathode roller 2 in the axial direction to ensure that the temperatures in different areas are relatively consistent.

[0042] In some embodiments, the heating module 32 may be an infrared heating module 32. Thus, the heat transfer efficiency of the heating module 32 is high, the uniformity of temperature distribution can be ensured, and the heating accuracy and controllability are high.

[0043] In addition, the heating element of the heating module 32 can also be a heating element of a heating wire, a heating plate, a heating resistor, a PTC heating element, etc. In this way, the types of the heating module 32 are relatively rich and can be reasonably selected according to actual needs.

[0044] In some embodiments, in combination Figure 3The protective cover plate 3 may further include: a heating plate 33. Specifically, the heating plate 33 is arranged on the side of the heating module 32 facing the cathode roller 2. The heat generated by the heating module 32 is first transferred to the heating plate 33, and then transferred to the cathode roller 2 by the heating plate 33. The heating plate 33 can evenly heat the heat transferred from the heating module 32 to different parts of the roller surface of the cathode roller 2. In this way, it is helpful to further improve the temperature consistency of different areas to be heated on the roller surface of the cathode roller 2, so as to better ensure the quality of the copper foil.

[0045] In some embodiments, the heating plate 33 is a carbon crystal heating plate 33. In this way, the heating plate 33 has a better heat transfer effect, better temperature uniformity, and lower cost.

[0046] It can be understood that the heating assembly composed of the heating module 32 and the carbon crystal heating plate 33 has a fast power adjustment speed, which can ensure that the cathode roller 2 reaches the operating temperature with the minimum electric energy and the shortest time. The adjustable temperature is 25-200°C, and the control accuracy is within 5°C, which can better match the applicable temperature of the cathode roller 2 when in use, that is, 55-60°C.

[0047] In some embodiments, in combination Figure 3 , the protective cover plate 3 may further include: a heat insulating layer 34. Specifically, the heat insulating layer 34 is disposed between the cover plate body 31 and the heating module 32, so that the heat insulating layer 34 can prevent the heat generated by the heating module 32 from being transferred to the cover plate body 31, thereby preventing the temperature of the cover plate body 31 from being too high, thereby causing the structure of the cover plate body 31 to be unstable, and at the same time, the heat is mainly transferred toward the cathode roller 2 side, so as to ensure the temperature control efficiency of the cathode roller 2. In addition, when the operator is working near the protective cover plate 3, a relatively comfortable temperature environment can be provided for the operator.

[0048] In some embodiments, the heat insulating layer 34 is a high molecular weight polyethylene member. Thus, the heat insulating layer 34 has better high temperature resistance and can provide better heat insulation. In addition, it has better chemical corrosion resistance and lower cost.

[0049] In some embodiments, the cover body 31 is also a high molecular weight polyethylene part. In this way, the cover body 31 is resistant to high temperature, impact, corrosion, has a small self-lubricating friction coefficient, has a long service life, and is suitable for heating conditions under an acidic atmosphere.

[0050] In some embodiments, in combination Figure 3The protective cover plate 3 may further include a purging device 4. Specifically, the purging device 4 may be a blower, a fan or the like, and there may be two purging devices 4, which are respectively arranged at both ends of the cover plate body 31 along the axial direction of the cathode roller 2. The purging device 4 is suitable for blowing hot air to the end faces of the cathode roller 2 along the axial direction, so that the end faces of the cathode roller 2 along the axial direction can be ensured to have a suitable temperature to avoid crystal precipitation. In addition, even if crystals are sucked out, the purging device 4 can also use wind force to blow the crystals off the end faces of the cathode roller 2 and remove them.

[0051] In some embodiments, a heating chamber can be jointly defined between the insulation layer 34 and the cover body 31. The heating chamber has air outlets at both ends along the axial direction of the cathode roller 2. Two purge devices 4 can be respectively arranged at the two air outlets. The two purge devices 4 are configured to guide the hot air in the heating chamber to the end surfaces of the cathode roller 2. In this way, the heat of the heating chamber can be fully utilized to prevent crystallization from precipitating on the end surfaces of the cathode roller 2, eliminating the need to separately set a heating element for the purge device 4, simplifying the overall structure of the purge device 4, reducing costs, and improving the utilization rate of the heat of the heating module 32.

[0052] In some embodiments, the purge device 4 may include a shell and an airflow drive member, the shell is arc-shaped, and the shape of the shell is adapted to the shape of the protective cover plate 3, so as to be installed on the side of the cover plate body 31 and keep the outer surface flush. The shell defines a wind passage cavity, and the wind passage cavity is provided with an air inlet along the axial side of the cathode roller 2 facing the protective cover plate 3, and the air inlet is connected with the wind passage, and the wind passage cavity is provided with an air outlet 41 along the radial side of the cathode roller 2 facing the cathode roller 2, and the air outlet 41 faces the axial end face of the cathode roller 2. The airflow drive member is provided in the wind passage cavity of the shell, and the airflow drive member drives the airflow from the heating chamber to flow to the air outlet 41 in sequence through the wind passage and the air inlet, and finally flows to the axial end face of the cathode roller 2, so as to realize heating the end face of the cathode roller 2 by using the heat of the heating module 32, and prevent crystals from precipitating from the end face of the cathode roller 2. In addition, even if crystals are sucked out, the purge device 4 can also use wind force to blow off and remove the crystals from the end face of the cathode roller 2. Furthermore, the overall structure of the purge device 4 is relatively simple and easy to implement.

[0053] In addition, it should be noted that since the purge device 4 is arranged at both ends of the protective cover 3, and the purge device 4 can blow hot air toward the two ends of the cathode roller 2, therefore, when the purge device 4 is working, it can prevent the air with lower temperature from entering from the two ends into the roller surface of the cathode roller 2 and the protective cover 3, which is beneficial to maintain a suitable temperature in the space between the roller surface of the cathode roller 2 and the protective cover 3. In this way, the purge device 4 can cooperate with the protective cover 3 to further improve the temperature uniformity of the roller surface of the cathode roller 2 to ensure the product quality of the copper foil.

[0054] It should be noted that the embodiments represented by "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments that are explicitly or not explicitly described.

[0055] In general, terms should be understood, at least in part, by the context in which they are used. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, depending, at least in part, on the context. Similarly, terms such as "a," "an," or "the" may also be understood to convey singular usage or to convey plural usage, depending, at least in part, on the context.

[0056] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0057] In addition, spatially relative terms, such as "below," "below," "below," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A copper foil production equipment, characterized in that: include: A device body, wherein the device body has an electrolytic cell; a cathode roller, the cathode roller being rotatably disposed in the electrolytic cell and having a portion of its structure extending out from the electrolyte in the electrolytic cell; A protective cover plate is disposed on the outer side of the cathode roller, the protective cover plate is opposite to a portion of the surface of the cathode roller along the circumferential direction, and the protective cover plate is configured to radiate heat to the cathode roller to adjust the roller surface temperature of the cathode roller.

2. The copper foil production equipment according to claim 1, characterized in that: The protective cover plate comprises: A cover body, the cover body being connected to the device body; A heating module is arranged on a side of the cover plate body facing the cathode roller to heat the cathode roller.

3. The copper foil production equipment according to claim 2, characterized in that: The cover plate body is in an arc shape adapted to the cathode roller.

4. The copper foil production equipment according to claim 2 or 3, characterized in that: The roller surface of the cathode roller includes a plurality of areas to be heated, and the heating module includes a plurality of heating elements corresponding to the plurality of areas to be heated. The plurality of heating elements operate independently of each other to independently heat the corresponding areas to be heated.

5. The copper foil production equipment according to claim 4, characterized in that: The protective cover also includes: A temperature sensing device is provided on the cover plate body. There are multiple temperature sensing devices corresponding to the areas to be heated. The temperature sensing device is used to sense the temperature of the areas to be heated corresponding to the cathode roller. The heating element adjusts the heating power according to the sensing results of the corresponding temperature sensing devices.

6. The copper foil production equipment according to claim 2 or 3, characterized in that: The protective cover plate further includes: a heating plate, which is arranged on a side of the heating module facing the cathode roller, and is used to evenly distribute the heat transferred from the heating module to different parts of the cathode roller surface.

7. The copper foil production equipment according to claim 6, characterized in that: The heating plate is a carbon crystal heating plate.

8. The copper foil production equipment according to claim 2 or 3, characterized in that: The protective cover plate further comprises: a heat insulating layer, wherein the heat insulating layer is arranged between the cover plate body and the heating module.

9. The copper foil production equipment according to claim 8, characterized in that: The protective cover plate also includes: a blowing device, which is two in number and is respectively arranged at the two ends of the cover plate body along the axial direction of the cathode roller, and the blowing device is suitable for blowing hot air to the end faces of the two ends of the cathode roller along the axial direction.

10. The copper foil production equipment according to claim 9, characterized in that: A heating chamber is jointly defined between the heat insulation layer and the cover plate body, and the heating chamber has air outlets at both ends along the axial direction of the cathode roller. The two blowing devices are respectively arranged at the two air outlets, and the two blowing devices are configured to guide the hot air in the heating chamber to the two ends of the cathode roller.

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