Copper foil production system and ultrasonic method

Abstract

The invention discloses a copper foil production system and an ultrasonic method, and relates to the field of electrolytic copper foil preparation, the copper foil production system is used for electrolytic copper foil production, the copper foil production system comprises a cathode roller and an electrolytic bath, the electrolytic bath is used for allowing electrolyte to pass through, the cathode roller is partially arranged in the electrolytic bath, the copper foil production system further comprises an ultrasonic transducer, and the ultrasonic transducer is arranged in the electrolytic bath. The ultrasonic transducer is arranged in the electrolytic bath, and ultrasonic waves emitted by the ultrasonic transducer enable electrolyte in the electrolytic bath to vibrate so as to shred a foam layer in the electrolytic bath; through the design, chemical pollution is avoided, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electrolytic copper foil production, and in particular to a copper foil production system and an ultrasonic method. BACKGROUND

[0002] With the acceleration of global energy transformation, lithium batteries, as the core energy storage device, are undergoing a comprehensive technology upgrade from high energy density to long cycle life, from consumer electronics to power and energy storage scenarios. As the core material of the lithium battery negative electrode current collector, the performance of the electrolytic copper foil directly determines the energy density, cycle life and safety reliability of the battery.

[0003] Among them, the "nail print" defect of the foil surface has become one of the important factors restricting the quality of high-end lithium battery copper foil. This defect can cause abnormalities in subsequent coating and affect the performance of the battery. The "nail print" is formed by the influence of the foam layer accumulated on the electrolyte surface on the copper foil surface during the production of the foil.

[0004] Currently, the treatment of the foam layer mainly relies on the regular cleaning or addition of defoaming agents by workers. The manual processing judgment is lagging behind, resulting in low efficiency, and the defoaming agent is easy to remain in the plating solution, causing chemical pollution, interfering with the effects of other additives, and ultimately affecting the quality of the copper foil. SUMMARY

[0005] The purpose of the present application is to provide a copper foil production system and an ultrasonic method that avoids chemical pollution and improves efficiency.

[0006] The present application discloses a copper foil production system for the production of electrolytic copper foil, comprising a cathode roller and an electrolytic cell. The electrolytic cell is used to pass through the electrolyte, and the cathode roller is partially arranged in the electrolytic cell. The copper foil production system further comprises an ultrasonic transducer arranged in the electrolytic cell. The ultrasonic transducer emits ultrasonic waves to vibrate the electrolyte in the electrolytic cell to shred the foam layer in the electrolytic cell.

[0007] Optionally, the electrolytic cell comprises an electrolytic cell body and a liquid return port. The electrolytic cell body is arranged below the cathode roller and cooperates with the cathode roller. The cathode roller is partially arranged in the electrolyte in the electrolytic cell body. The liquid return port is arranged at least on one side of the cathode roller and located between the side wall of the electrolytic cell body and the cathode roller. The ultrasonic transducer is arranged at the liquid return port.

[0008] Optionally, the copper foil production system further comprises a detection sensor arranged on the side of the liquid return port away from the electrolytic cell body, for detecting the thickness of the foam layer of the liquid return port. When the thickness of the foam layer of the liquid return port is detected to exceed a threshold value, the ultrasonic transducer is turned on.

[0009] Optionally, the liquid return port comprises a first liquid return port and a second liquid return port, the first liquid return port and the second liquid return port are respectively located on two sides of the cathode roller, the ultrasonic device comprises a first ultrasonic transducer and a second ultrasonic transducer, the first ultrasonic transducer is arranged at the first liquid return port, and the second ultrasonic transducer is arranged at the second liquid return port; the detection sensor comprises a first detection sensor and a second detection sensor, the first detection sensor is arranged above the first liquid return port and is used for detecting the thickness of the foam layer of the first liquid return port, and the second detection sensor is arranged above the second liquid return port and is used for detecting the thickness of the foam layer of the second liquid return port; the first detection sensor is connected with the first ultrasonic transducer, the second detection sensor is connected with the second ultrasonic transducer, and when it is detected that the foam layer of the first liquid return port or / and the second liquid return port exceeds a threshold value, the first ultrasonic transducer or / and the second ultrasonic transducer is started.

[0010] Optionally, in the direction from the first liquid return port to the second liquid return port, the electrolytic cell body comprises a first side wall and a second side wall, the first ultrasonic transducer is arranged between the first side wall and the cathode roller, the distance between the first ultrasonic transducer and the first side wall is 10mm-12mm, and the distance between the first ultrasonic transducer and the cathode roller is 9mm-11mm; the second ultrasonic transducer is arranged between the second side wall and the cathode roller, the distance between the second ultrasonic transducer and the second side wall is 9mm-12mm, and the distance between the second ultrasonic transducer and the cathode roller is 9mm-11mm.

[0011] Optionally, the first ultrasonic transducer comprises a plurality of first ultrasonic assemblies, and the plurality of first ultrasonic assemblies are arranged side by side along the extension direction of the cathode roller at the first liquid return port; the second ultrasonic transducer comprises a plurality of second ultrasonic assemblies, and the plurality of second ultrasonic assemblies are arranged side by side along the extension direction of the cathode roller at the second liquid return port.

[0012] Optionally, the first ultrasonic transducer comprises a plurality of first ultrasonic assemblies, the first liquid return port is sequentially divided into a first ultrasonic zone, a second ultrasonic zone and a third ultrasonic zone along the extension direction of the cathode roller, and the plurality of first ultrasonic assemblies are arranged in a staggered manner along the first ultrasonic zone, the second ultrasonic zone and the third ultrasonic zone; the second ultrasonic transducer comprises a plurality of second ultrasonic assemblies, the second liquid return port is sequentially divided into a fourth ultrasonic zone, a fifth ultrasonic zone and a sixth ultrasonic zone along the extension direction of the cathode roller, and the plurality of second ultrasonic assemblies are arranged in a staggered manner along the fourth ultrasonic zone, the fifth ultrasonic zone and the sixth ultrasonic zone.

[0013] Optionally, the copper foil production system further comprises a data processing module, a controller and an alarm, the data processing module, the controller and the alarm are arranged on one side of the electrolytic cell, the data processing module is in electrical connection with the detection sensor, the alarm is in electrical connection with the data processing module, and the controller is in electrical connection with the alarm.

[0014] The application also discloses an ultrasonic method for the copper foil production system, comprising the steps of:

[0015] arranging an ultrasonic transducer in the electrolytic cell;

[0016] when a foam layer appears in the electrolytic cell, the ultrasonic transducer performs ultrasonic action on the foam layer.

[0017] Optionally, when the foam layer appears in the electrolytic cell, the step of performing ultrasonic action on the foam layer by the ultrasonic transducer comprises the steps of:

[0018] detecting the thickness of the foam layer at the liquid return port by a detection sensor;

[0019] when the thickness of the foam layer at the liquid return port exceeds a threshold value, starting the ultrasonic transducer to perform ultrasonic action on the foam layer.

[0020] Optionally, when the thickness of the foam layer at the liquid return port exceeds a threshold value, the step of starting the ultrasonic transducer to perform ultrasonic action on the foam layer comprises:

[0021] when the thickness of the foam layer at the liquid return port exceeds a first range of the threshold value, starting the ultrasonic transducer to perform ultrasonic action on the foam layer by using a first ultrasonic frequency; or / and

[0022] when the thickness of the foam layer at the liquid return port exceeds a second range of the threshold value, starting the ultrasonic transducer to perform ultrasonic action on the foam layer by using a second ultrasonic frequency; or / and

[0023] when the thickness of the foam layer at the liquid return port exceeds a third range of the threshold value, starting the ultrasonic transducer to perform ultrasonic action on the foam layer by using a third ultrasonic frequency.

[0024] wherein the first range is smaller than the second range which is smaller than the third range, and the first ultrasonic frequency is greater than the second ultrasonic frequency which is greater than the third ultrasonic frequency.

[0025] Compared with the prior art, the present application sets an ultrasonic transducer in the electrolytic tank, and makes the electrolyte in the electrolytic tank vibrate through the ultrasonic transducer, so that the foam layer in the tank is torn apart by the vibration waves of the electrolyte, thereby reducing the thickness of the foam layer, avoiding chemical residue pollution caused by the use of defoaming agent, and avoiding the problem of low efficiency caused by manual processing, so as to improve the production efficiency of the copper foil. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present application and constitute a part of the specification, illustrate the embodiments of the present application and serve to explain the principles of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings. In the drawings:

[0027] Figure 1 is a schematic view of the cross-sectional structure of the copper foil production system provided by the present application;

[0028] Figure 2 is a schematic view of the copper foil production system provided by the present application;

[0029] Figure 3 is a schematic view of the top structure of the copper foil production system provided by the first embodiment of the present application;

[0030] Figure 4 is a schematic view of the ultrasonic method steps provided by the present application;

[0031] Figure 5 is Figure 4 is a schematic view of the further process steps of step S2 in

[0032] Figure 6 is Figure 5 is a schematic view of the process steps of step S22 in

[0033] Figure 7 is Figure 5 is another schematic view of the process steps of step S22 in

[0034] Figure 8 is a schematic view of the top structure of the copper foil production system provided by the second embodiment of the present application.

[0035] 10, copper foil production system; 110, cathode roller; 120, electrolytic cell; 121, electrolytic cell body; 122, liquid return port; 123, first liquid return port; 124, second liquid return port; 125, electrolyte inlet; 130, ultrasonic transducer; 131, first ultrasonic transducer; 132, second ultrasonic transducer; 133, first ultrasonic assembly; 134, second ultrasonic assembly; 140, detection sensor; 141, first detection sensor; 142, second detection sensor; 150, data processing module; 160, controller; 170, alarm; 180, slide rail; 190, first ultrasonic zone; 191, second ultrasonic zone; 192, third ultrasonic zone; 193, fourth ultrasonic zone; 194, fifth ultrasonic zone; 195, sixth ultrasonic zone; 200, foil outlet direction; 300, foam layer. DETAILED DESCRIPTION

[0036] It is to be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting. The specific structural and functional details disclosed herein are not to be interpreted as limiting but merely as a representative basis for teaching one skilled in the art to variously employ the present application.

[0037] Figure 1 is a cross-sectional structure schematic diagram of the copper foil production system provided by the present application, as Figure 1 The present application discloses a copper foil production system 10, which comprises a cathode roller 110 and an electrolytic cell 120. The electrolytic cell 120 is used to pass through electrolyte, and the cathode roller 110 is partially arranged in the electrolytic cell 120. The copper foil production system 10 further comprises an ultrasonic transducer 130 arranged in the electrolytic cell 120. The ultrasonic transducer 130 emits ultrasonic waves to vibrate the electrolyte in the electrolytic cell 120, so as to tear the foam layer 300 in the electrolytic cell 120.

[0038] Compared with the prior art, the ultrasonic transducer 130 is arranged in the electrolytic cell 120, and the ultrasonic transducer 130 emits ultrasonic waves to vibrate the electrolyte in the electrolytic cell 120. The vibration waves of the electrolyte can impact the foam layer 300 in the electrolytic cell 120, so as to tear the foam layer 300 and reduce the thickness of the foam layer 300. In this way, chemical residue pollution caused by the use of defoaming agent can be avoided, and the problem of low efficiency caused by manual processing can be avoided, so as to improve the copper foil production efficiency.

[0039] In the present application, as Figure 1As shown, the electrolytic cell 120 includes an electrolytic cell body 121 and a liquid return port 122, the electrolytic cell body 121 is arranged below the cathode roller 110 and cooperates with the cathode roller 110, the liquid return port 122 is located between the side wall of the electrolytic cell body 121 and the cathode roller 110, and the ultrasonic transducer 130 is arranged at the liquid return port 122.

[0040] The electrolytic cell 120 is an anode tank, and an electrolyte inlet 125 is generally arranged in the middle of the bottom of the electrolytic cell 120. The electrolyte for producing electrolytic copper foil is introduced through the electrolyte inlet 125, so that the cathode roller 110 is partially immersed in the electrolyte in the electrolytic cell 120. The cathode roller 110 rotates to form a copper foil on the cathode roller 110 through an electrolytic reaction, and then is guided out along the foil outlet direction 200 to the next process. In order to ensure the stability and continuity of the copper foil production process, the electrolyte is recycled, that is, the electrolyte in the electrolytic cell 120 can overflow through the liquid return port 122. The electrolytic reaction and the plating solution circulation bring in air, which accumulates to form a foam layer 300 in the low flow area of the liquid return port 122. The foam layer 300 forms "nail print" defects on the surface of the copper foil through uneven adsorption of the gas-liquid interface, different liquid film resistance, and plating solution flow disturbance. Therefore, the ultrasonic transducer 130 is arranged at the liquid return port 122, which can clean the source of the foam layer 300, and has high reliability.

[0041] In the production process of the copper foil, since the cathode roller 110 needs to be turned over in the anode tank, the foam layer cannot be completely eliminated. When the thickness of the foam layer is below 5mm, it is within the controllable range and will not affect the surface of the copper foil. Therefore, when the ultrasonic transducer 130 is used to process the foam layer 300, the thickness of the foam layer 300 is processed to be below 5mm.

[0042] The copper foil production system 10 further includes a detection sensor 140, a data arrangement module 150, a controller 160 and an alarm 170. The detection sensor 140, the data arrangement module 150, the controller 160 and the alarm 170 are all arranged on one side of the electrolytic cell 120. The detection sensor 140 is used to detect the thickness of the foam layer 300 of the liquid return port 122. The data arrangement module 150 is in electrical signal connection with the detection sensor 140. The alarm 170 is in electrical signal connection with the data arrangement module 150. The controller 160 is in electrical signal connection with the alarm 170. Figure 2 The copper foil production system provided by the present application is shown in the flowchart as shown in Figure 2 As shown, in combination with Figure 1, open the copper foil production system 10 switch, set the threshold value of the foam layer 300 thickness in the data arrangement module 150, detect the thickness of the foam layer 300 of the liquid return port 122 by using the detection sensor 140, the detection sensor 140 feeds back the detection result to the data arrangement module 150, the data arrangement module 150 judges whether the detection result exceeds the threshold value, when the foam layer 300 of the liquid return port 122 detected exceeds the threshold value, the alarm 170 starts the alarm signal, at this time the controller 160 controls the ultrasonic transducer 130 to start. When the alarm 170 alarms, the operator can automatically cancel the alarm and check the foil surface mark fault station through the reset instruction, so as to facilitate subsequent detection analysis. When the detection sensor 140 detects that the threshold value is not exceeded, the process is ended and the ultrasonic transducer 130 is not started.

[0043] The detection sensor 140 uses a laser range finder, and the principle of use is based on the laser time of flight measurement method (TOF, Time of Flight). The core logic is to calculate the distance by calculating the propagation time of laser signal in the air. The fast propagation characteristics of laser are used to realize non-contact, fast and accurate distance measurement, ensure the accuracy of the judgment of the thickness of the foam layer 300, and accurately start the ultrasonic transducer 130 to avoid energy waste.

[0044] The application will be described in detail below with reference to the accompanying drawings and optional embodiments.

[0045] First embodiment:

[0046] Figure 3 The first embodiment of the present application provides a top view structural schematic diagram of the copper foil production system, as shown in Figure 6 The first embodiment of the present application provides a top view structural schematic diagram of the copper foil production system, as shown in

[0047] The detection sensor 140 includes a first detection sensor 141 and a second detection sensor 142, the first detection sensor 141 is arranged above the first liquid return port 123 for detecting the thickness of the foam layer 300 of the first liquid return port 123; the second detection sensor 142 is arranged above the second liquid return port 124 for detecting the thickness of the foam layer 300 of the second liquid return port 124; the first detection sensor 141 is connected with the first ultrasonic transducer 131, and the second detection sensor 142 is connected with the second ultrasonic transducer 132; when the foam layer 300 of the first liquid return port 123 or / and the second liquid return port 124 is detected to exceed the threshold value, the first ultrasonic transducer 131 or / and the second ultrasonic transducer 132 is started, that is, when the thickness of the foam layer 300 at one of the liquid return ports 122 exceeds the threshold value, the corresponding ultrasonic transducer 130 is started, and when the thickness of the foam layer 300 at both liquid return ports 122 exceeds the threshold value, both ultrasonic transducers 130 on both sides are started at the same time to ensure that the ultrasonic energy covers to ensure that the thickness of the foam layer 300 at the corresponding liquid return port 122 is within the controllable range after processing.

[0048] wherein, Figure 3 The arrow direction is the transverse direction, and the laser range finder can be arranged on the slide rail 180 above the liquid return port 122, so that the laser range finder scans along the liquid return port 122 area transversely at 0.5m / min-3m / min to measure the thickness of the foam layer 300 in real time. When the thickness of the foam layer 300 at any point exceeds the set threshold value, the system immediately triggers the alarm 170 to issue an audible and visual alarm.

[0049] In the direction from the first liquid return port 123 to the second liquid return port 124, the electrolytic cell body 121 includes a first side wall and a second side wall, the first ultrasonic transducer 131 is arranged between the first side wall and the cathode roller 110, the distance between the first ultrasonic transducer 131 and the first side wall is 10㎜-12㎜, and the distance between the first ultrasonic transducer 131 and the cathode roller 110 is 9㎜-11㎜; the second ultrasonic transducer 132 is arranged between the second side wall and the cathode roller 110, the distance between the second ultrasonic transducer 132 and the second side wall is 10㎜-12㎜, and the distance between the second ultrasonic transducer 132 and the cathode roller 110 is 9㎜-11㎜.

[0050] The distance between the ultrasonic transducer 130 and the side wall of the electrolytic tank 120 is greater than the distance between the ultrasonic transducer 130 and the cathode roller 110. After the arrangement, on the one hand, the overflow speed of the electrolyte in the electrolytic tank 120 flowing out from the first return port 123 and the second return port 124 can be ensured, and the further reduction of the speed in the region to cause more foam can be avoided; on the other hand, the ultrasonic transducer 130 keeps a distance from the cathode roller 110, and the offset range of the cathode roller 110 during rotation is not affected, so that the normal operation of the cathode roller 110 is ensured, and the ultrasonic transducer 130 emits ultrasonic waves to process the foam layer 300 in the maximum range, so that the efficiency is ensured.

[0051] The first ultrasonic transducer 131 includes a plurality of first ultrasonic assemblies 133, and the plurality of first ultrasonic assemblies 133 are arranged side by side along the extension direction of the cathode roller 110 at the first return port, and the total length of the plurality of first ultrasonic assemblies 133 is greater than the length of the cathode roller 110; the second ultrasonic transducer 132 includes a plurality of second ultrasonic assemblies 134, and the plurality of second ultrasonic assemblies 134 are arranged side by side along the extension direction of the cathode roller 110 at the second return port, and the total length of the plurality of second ultrasonic assemblies 134 is greater than the length of the cathode roller 110. In this way, the range of the ultrasonic waves emitted by the ultrasonic transducer 130 covers the whole area of the cathode roller 110 on the corresponding side, so that the foam layer 300 existing in the area is comprehensively processed by ultrasonic waves.

[0052] The thickness of the foam layer 300 can be divided into thin foam layer, medium foam layer and thick foam layer according to the percentage of exceeding the threshold value 5mm, wherein the thin foam layer is 1% to 30% of the thickness of the foam layer exceeding the threshold value, the medium foam layer is 31% to 60% of the thickness of the foam layer exceeding the threshold value, and the thick foam layer is 61% to 90% of the thickness of the foam layer exceeding the threshold value. The inventors carried out ultrasonic processing experiments on the above three kinds of foam layers with different thicknesses to select the corresponding ultrasonic frequency, as follows:

[0053] ① Foam layer thickness 8.1mm to 9.5mm frequency experiment as shown in Table 1:

[0054]

[0055] Table 1 ② Foam layer thickness 6.6mm to 8.0mm frequency experiment as shown in Table 2:

[0056]

[0057] Table 2 ③ Foam layer thickness 5.1mm to 6.5mm frequency experiment Table 3:

[0058]

[0059]

[0060] Table 3

[0061] In summary, according to experiments ①, ② and ③, if the thickness of the foam layer 300 is in the range of 8.1 mm to 9.5 mm, the use of ultrasonic waves with a frequency of 20 kHz to 25 kHz can effectively reduce the thickness of the foam layer 300 to below 8.1 mm. Then, by using ultrasonic waves with a frequency of 30 kHz to 35 kHz, the thickness of the foam layer 300 can be reduced to below 6.6 mm. Further, by adjusting the frequency to 40 kHz to 45 kHz, the thickness of the foam layer 300 can be controlled to be within the threshold value of 5 mm. That is, if the thickness of the foam layer 300 exceeds the set threshold value by 1% to 30%, the controller 160 drives the ultrasonic transducer 130 to emit high-frequency ultrasonic waves. If the thickness of the foam layer 300 exceeds the set threshold value by 31% to 60%, the controller 160 drives the ultrasonic transducer 130 to emit medium-frequency ultrasonic waves. If the thickness of the foam layer 300 exceeds the set threshold value by 61% to 90%, the controller 160 drives the ultrasonic transducer 130 to emit low-frequency ultrasonic waves. The frequency of the ultrasonic transducer 130 is adjusted in real time to achieve better foam treatment effect and faster processing of the thickness of the foam layer 300 to the controllable range, thereby ensuring the quality of the copper foil production.

[0062] Figure 4 is a schematic diagram of the ultrasonic method steps provided by the present application, as shown in Figure 4 The present application also discloses an ultrasonic method for the copper foil production system as described above to solve the problem of foam generated in the copper foil production process, comprising the steps of:

[0063] S1: An ultrasonic transducer is arranged in the electrolytic cell.

[0064] S2: When a foam layer appears in the electrolytic cell, the ultrasonic transducer performs ultrasonic action on the foam layer.

[0065] The ultrasonic transducer is used to solve the problem of chemical contamination and improve the treatment effect.

[0066] Among them, Figure 5 is Figure 4 a schematic diagram of the further process steps of step S2 in Figure 5 When a foam layer appears in the electrolytic cell, the step S2 of performing ultrasonic action on the foam layer by the ultrasonic transducer comprises the steps of:

[0067] S21: The thickness of the foam layer at the liquid return port is detected by a detection sensor.

[0068] S22: when the thickness of the foam layer of the liquid return port exceeds a threshold value, start the ultrasonic transducer to perform ultrasonic treatment on the foam layer.

[0069] The threshold value is set to determine whether to start the ultrasonic transducer. If the threshold value is exceeded, the ultrasonic transducer is started. If the threshold value is not exceeded, the process is ended. This realizes intelligent control in the copper foil production process and improves the accuracy of judgment.

[0070] If there are multiple cases within the threshold value range, the corresponding ultrasonic frequency is selected to process the foam layer 300 according to the specific range exceeding the threshold value. Specifically, Figure 6 Figure 5 A process step diagram of step S22 is shown in FIG. 6. Figure 6 As shown in FIG. 6, when the thickness of the foam layer of the liquid return port exceeds a threshold value, the step S22 of starting the ultrasonic transducer to perform ultrasonic treatment on the foam layer includes the following steps:

[0071] S221: when the thickness of the foam layer of the liquid return port exceeds a first range of the threshold value, start the ultrasonic transducer to perform ultrasonic treatment on the foam layer using a first ultrasonic frequency; when the thickness of the foam layer of the liquid return port exceeds a second range of the threshold value, start the ultrasonic transducer to perform ultrasonic treatment on the foam layer using a second ultrasonic frequency; when the thickness of the foam layer of the liquid return port exceeds a third range of the threshold value, start the ultrasonic transducer to perform ultrasonic treatment on the foam layer using a third ultrasonic frequency.

[0072] The first range is smaller than the second range, which is smaller than the third range. The first ultrasonic frequency is greater than the second ultrasonic frequency, which is greater than the third ultrasonic frequency. When the thickness of the foam layer 300 exceeds any of the ranges of the threshold value, the corresponding ultrasonic frequency is used for processing. Of course, the ultrasonic frequency can also be adjusted according to the thickness change of the foam layer 300 during processing.

[0073] Of course, the corresponding ultrasonic frequency can also be selected according to the thickness change of the foam layer 300 during ultrasonic treatment to cooperate with the alternating treatment to make the foam layer reach a controllable range. Specifically, Figure 7 Figure 5 Another process step diagram of step S22 is shown in FIG. 7. Figure 7 As shown in FIG. 7, when the thickness of the foam layer of the liquid return port exceeds a threshold value, the step S22 of starting the ultrasonic transducer to perform ultrasonic treatment on the foam layer includes the following steps:

[0074] S221: when the thickness of the foam layer of the liquid return port exceeds a first range of the threshold value, start the ultrasonic transducer to perform ultrasonic treatment on the foam layer using a first ultrasonic frequency. ​​

[0075] S222: when the thickness of the foam layer of the liquid return port exceeds a second range of threshold values, the ultrasonic transducer is activated to use a second ultrasonic frequency to perform ultrasonic treatment on the foam layer;

[0076] S223: when the thickness of the foam layer of the liquid return port exceeds a third range of threshold values, the ultrasonic transducer is activated to use a third ultrasonic frequency to perform ultrasonic treatment on the foam layer.

[0077] In addition, the corresponding ultrasonic frequency can also be selected directly according to the detected thickness of the foam layer exceeding the range of threshold values. The above selection of ultrasonic frequency is flexible and can be performed in a loop.

[0078] Second embodiment:

[0079] Figure 8 is a top view structural schematic diagram of a copper foil production system provided by the second embodiment of the present application, as shown in 8, as the second embodiment of the present application, the difference between this embodiment and the first embodiment is that the positions of the plurality of first ultrasonic assemblies 133 and the plurality of second ultrasonic assemblies 134 can also be staggered, wherein the first liquid return port 123 is divided into a first ultrasonic zone 190, a second ultrasonic zone 191 and a third ultrasonic zone 192 along the extension direction of the cathode roller 110, and the plurality of first ultrasonic assemblies 133 are staggered along the first ultrasonic zone 190, the second ultrasonic zone 191 and the third ultrasonic zone 192; the second ultrasonic transducer 132 includes a plurality of second ultrasonic assemblies 134, the second liquid return port 124 is divided into a fourth ultrasonic zone 193, a fifth ultrasonic zone 194 and a sixth ultrasonic zone 195 along the extension direction of the cathode roller 110, and the plurality of second ultrasonic assemblies 134 are staggered along the fourth ultrasonic zone 193, the fifth ultrasonic zone 194 and the sixth ultrasonic zone 195.

[0080] Specifically, the second ultrasonic zone 191 is located between the first ultrasonic zone 190 and the third ultrasonic zone 192, and the fifth ultrasonic zone 194 is located between the fourth ultrasonic zone 193 and the sixth ultrasonic zone 195. After the plurality of first ultrasonic assemblies 133 are arranged in a staggered manner, the distance between the first ultrasonic assembly 133 arranged in the second ultrasonic zone 191 and the cathode roller 110 is less than the distance between the first ultrasonic assembly 133 arranged in the first ultrasonic zone 190 and the third ultrasonic zone 192 and the cathode roller 110, and the distance between the first ultrasonic assembly 133 of the first ultrasonic zone 190 and the cathode roller 110 is the same as the distance between the first ultrasonic assembly 133 of the third ultrasonic zone 192 and the cathode roller 110. Similarly, after the plurality of second ultrasonic assemblies 134 are arranged in a staggered manner, the distance between the second ultrasonic assembly 134 arranged in the fifth ultrasonic zone 194 and the cathode roller 110 is less than the distance between the second ultrasonic assembly 134 arranged in the fourth ultrasonic zone 193 and the sixth ultrasonic zone 195 and the cathode roller 110, and the distance between the second ultrasonic assembly 134 of the fourth ultrasonic zone 193 and the cathode roller 110 is the same as the distance between the second ultrasonic assembly 134 of the sixth ultrasonic zone 195 and the cathode roller 110. That is, in the case where the distance between the ultrasonic transducer 130 of the first ultrasonic zone 190 and the third ultrasonic zone 192 and the first side wall remains unchanged, the ultrasonic transducer 130 of the second ultrasonic zone 191 is adjusted to be close to the cathode roller 110, and in the case where the distance between the ultrasonic transducer 130 of the fourth ultrasonic zone 193 and the sixth ultrasonic zone 195 and the second side wall remains unchanged, the ultrasonic transducer 130 of the fifth ultrasonic zone 194 is adjusted to be close to the cathode roller 110. In this way, when the ultrasonic transducers 130 at the intermediate positions are opened at the same frequency and process the foam layer 300 located at the middle of the cathode roller 110, the foam layer 300 at this position is torn and pushed to both sides at the same time, and cooperates with the ultrasonic transducers 130 located at both sides to more quickly process the foam layer 300 to a controllable range.

[0081] Further, the interval between the first ultrasonic assembly 133 arranged in the second ultrasonic area 191 and the cathode roller 110 is smaller than the interval between the first ultrasonic assembly 133 arranged in the first ultrasonic area 190 and the third ultrasonic area 192 and the cathode roller 110, which is 1mm-2mm; the interval between the second ultrasonic assembly 134 arranged in the fifth ultrasonic area 194 and the cathode roller 110 is smaller than the interval between the second ultrasonic assembly 134 arranged in the fourth ultrasonic area 193 and the sixth ultrasonic area 195 and the cathode roller 110, which is 1mm-2mm, so as to ensure the effect of ultrasonic waves and to further ensure the reflux speed by increasing the overflow space of the electrolyte in the electrolytic tank 120 when overflowing to the first reflux port 123 and the second reflux port 124, so as to reduce the accumulation of the foam layer 300.

[0082] It should be noted that the steps involved in the present scheme are not limited to the order of execution, and the steps written in the front can be executed first, or executed later, or even executed simultaneously, as long as the present scheme can be implemented, it should be considered as belonging to the protection scope of the present application.

[0083] It should be noted that the inventive concept of the present application can form a very large number of embodiments, but the length of the application file is limited and cannot be listed one by one, therefore, on the premise of not conflicting, the above described various embodiments or technical features can be combined to form new embodiments, and the combination of each embodiment or technical feature will enhance the original technical effect.

[0084] The above is a further detailed description of the present application in combination with specific optional embodiments, which cannot be limited to these descriptions. For ordinary skilled persons in the art to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, which should be considered as belonging to the protection scope of the present application.

Claims

1. A copper foil production system for producing electrolytic copper foil, comprising a cathode roller and an electrolytic cell, wherein the electrolytic cell is used to pass an electrolyte, and the cathode roller is partially disposed in the electrolytic cell, characterized in that: The copper foil production system further includes an ultrasonic transducer, which is arranged in the electrolytic cell. The ultrasonic wave emitted by the ultrasonic transducer causes the electrolyte in the electrolytic tank to vibrate, thereby tearing apart the foam layer in the electrolytic tank.

2. The copper foil production system according to claim 1, wherein: The electrolytic cell includes an electrolytic cell body and a liquid return port. The electrolytic cell body is arranged below the cathode roller and cooperates with the cathode roller. The cathode roller is partially placed in the electrolyte in the electrolytic cell body; the liquid return port is arranged on at least one side of the cathode roller and is located between the side wall of the electrolytic cell body and the cathode roller. The ultrasonic transducer is arranged at the liquid return port.

3. The copper foil production system according to claim 2, wherein: The copper foil production system also includes a detection sensor, which is arranged on a side of the liquid return port away from the electrolytic cell body and is used to detect the thickness of the foam layer at the liquid return port. When it is detected that the thickness of the foam layer at the liquid return port exceeds a threshold, the ultrasonic transducer is turned on.

4. The copper foil production system according to claim 3, wherein: The liquid return port includes a first liquid return port and a second liquid return port, the first liquid return port and the second liquid return port are respectively located on both sides of the cathode roller, the ultrasonic device includes a first ultrasonic transducer and a second ultrasonic transducer, the first ultrasonic transducer is arranged at the first liquid return port, and the second ultrasonic transducer is arranged at the second liquid return port; The detection sensor includes a first detection sensor and a second detection sensor, the first detection sensor is arranged above the first liquid return port, and is used to detect the thickness of the foam layer of the first liquid return port; the second detection sensor is arranged above the second liquid return port, and is used to detect the thickness of the foam layer of the second liquid return port; the first detection sensor is connected to the first ultrasonic transducer, and the second detection sensor is connected to the second ultrasonic transducer, and when it is detected that the thickness of the foam layer of the first liquid return port and / or the second liquid return port exceeds a threshold, the first ultrasonic transducer and / or the second ultrasonic transducer is turned on.

5. The copper foil production system according to claim 4, wherein: Along the direction from the first liquid return port to the second liquid return port, the electrolytic cell body includes a first side wall and a second side wall, the first ultrasonic transducer is arranged between the first side wall and the cathode roller, the distance between the first ultrasonic transducer and the first side wall is 10㎜-12㎜, and the distance between the first ultrasonic transducer and the cathode roller is 9㎜-11㎜; the second ultrasonic transducer is arranged between the second side wall and the cathode roller, the distance between the second ultrasonic transducer and the second side wall is 10㎜-12㎜, and the distance between the second ultrasonic transducer and the cathode roller is 9㎜-11㎜.

6. The copper foil production system according to claim 5, wherein: The first ultrasonic transducer includes a plurality of first ultrasonic components, which are arranged in parallel at the first return port along the extension direction of the cathode roller, and the total length of the plurality of first ultrasonic components is greater than the length of the cathode roller; the second ultrasonic transducer includes a plurality of second ultrasonic components, which are arranged in parallel at the second return port along the extension direction of the cathode roller, and the total length of the plurality of second ultrasonic components is greater than the length of the cathode roller.

7. The copper foil production system according to claim 3, wherein: The copper foil production system also includes a data sorting module, a controller and an alarm. The data sorting module, the controller and the alarm are all arranged on one side of the electrolytic cell. The data sorting module is electrically connected to the detection sensor, the alarm is electrically connected to the data sorting module, and the controller is electrically connected to the alarm.

8. An ultrasonic method for use in the copper foil production system according to any one of claims 1 to 7, characterized in that: Including steps: An ultrasonic transducer is provided in the electrolytic cell; When a foam layer appears in the electrolytic cell, the ultrasonic transducer performs ultrasonic action on the foam layer.

9. The ultrasonic method according to claim 8, wherein When a foam layer appears in the electrolytic cell, the step of applying ultrasonic waves to the foam layer by the ultrasonic transducer comprises the following steps: Detecting the thickness of the foam layer at the liquid return port by using a detection sensor; When the thickness of the foam layer at the liquid return port exceeds a threshold, the ultrasonic transducer is activated to perform ultrasonic action on the foam layer.

10. The ultrasonic method according to claim 9, wherein When the thickness of the foam layer at the liquid return port exceeds a threshold, the step of starting the ultrasonic transducer to perform ultrasonic action on the foam layer comprises: When the thickness of the foam layer at the liquid return port exceeds a first range of a threshold value, starting the ultrasonic transducer to perform ultrasonic action on the foam layer using a first ultrasonic frequency; or / and When the thickness of the foam layer at the liquid return port exceeds a second range of the threshold, starting the ultrasonic transducer to perform ultrasonic action on the foam layer using a second ultrasonic frequency; or / and When the thickness of the foam layer at the liquid return port exceeds a third range of the threshold value, the ultrasonic transducer is activated to perform ultrasonic action on the foam layer using a third ultrasonic frequency; The first range is smaller than the second range and smaller than the third range, and the first ultrasonic frequency is greater than the second ultrasonic frequency and greater than the third ultrasonic frequency.

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