CN116463691A - Electrolytic copper foil accurate production system and electrolytic copper foil accurate production method - Google Patents
Electrolytic copper foil accurate production system and electrolytic copper foil accurate production method Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 356
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000011889 copper foil Substances 0.000 title claims abstract description 47
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 148
- 230000005540 biological transmission Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- 238000012937 correction Methods 0.000 claims description 12
- 238000004364 calculation method Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000047 product Substances 0.000 description 23
- 239000000126 substance Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000011888 foil Substances 0.000 description 5
- 239000010949 copper Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention relates to an electrolytic copper foil accurate production system and an electrolytic copper foil accurate production method, wherein the system comprises a production executing mechanism and a production control module, during production, a target current efficiency value is firstly obtained, then according to a target production specification, an initial electrolysis time and an initial current intensity are obtained based on a preset electrolysis model and the target current efficiency value, then a signal is sent to the production executing mechanism to start production, finally an actual production specification is obtained, and according to the actual production specification and the target production specification, a corrected current intensity is obtained based on the preset electrolysis model and the target current efficiency value, and a signal is sent to the production executing mechanism according to the corrected current intensity to continue production. Compared with the prior art, the invention adopts the non-fixed current instead of the fixed parameter, and adjusts the current intensity to be corrected at any time in the production process, so that the production has flexibility and accuracy.
Description
Technical Field
The invention relates to the technical field of electrolytic foil manufacturing, in particular to an electrolytic copper foil accurate production and an electrolytic copper foil accurate production method.
Background
With the development of science and technology, the demands of various industries on metal foil materials are increasing, and electrolytic methods are the most common production methods of metal foil materials, and the metal foil materials obtained by the method have wide application, such as copper foil, aluminum foil, nickel foil, iron foil and the like.
Currently, in the field of electrolytic copper foil, factors influencing the quality and quantity of final finished products, such as current efficiency values, electrolysis time and the like in the electrolysis process, are numerous. In the prior art, fixed current efficiency value calculation is generally adopted, and fixed parameter production is adopted, so that the final production error is extremely large. Although the aim of regulating the production results can be achieved by adjusting certain parameters during the production process, the current solutions still do not achieve the degree of accuracy that one desires.
Therefore, a new process scheme for producing electrolytic copper foil is needed to achieve the purpose of accurate production.
Disclosure of Invention
In view of the foregoing, it is necessary to provide an electrolytic copper foil accurate production system and an electrolytic copper foil accurate production method for achieving the purpose of accurately producing copper foil.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an electrolytic copper foil accurate production system, which comprises a production executing mechanism and a production control module, wherein the production executing mechanism is used for obtaining copper foil through electrolysis, the production executing mechanism is electrically connected with the production control module, and the production control module comprises an efficiency value determining module, an initial parameter calculating module, a production starting module and a production adjusting module which are electrically connected in sequence, wherein:
the efficiency value determining module is used for obtaining a target current efficiency value;
the initial parameter calculation module is used for obtaining a target production specification, and obtaining initial electrolysis time and initial current intensity based on a preset electrolysis model and the target current efficiency value according to the target production specification;
the production starting module is used for sending a signal to the production executing mechanism according to the initial electrolysis time and the initial current intensity so as to control the production executing mechanism to start electrolysis;
the production adjusting module is used for obtaining actual production specifications, obtaining corrected current intensity based on the preset electrolysis model according to the actual production specifications and the target production specifications, and sending a signal to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis.
Further, the production executing mechanism further comprises a motor, a speed reduction transmission mechanism, a cathode roller and an electrolytic tank, wherein the motor is in transmission connection with the speed reduction transmission mechanism, the speed reduction transmission mechanism is in transmission connection with the cathode roller, and the peripheral surface of the cathode roller extends into the electrolytic tank.
In a second aspect, the present invention also provides a method for precisely producing an electrolytic copper foil, which is applied to the precise production system of an electrolytic copper foil, and includes:
obtaining a target current efficiency value;
obtaining a target production specification, and obtaining initial electrolysis time and initial current intensity based on a preset electrolysis model and the target current efficiency value according to the target production specification;
sending a signal to the production executing mechanism according to the initial electrolysis time and the initial current intensity so as to control the production executing mechanism to start electrolysis;
and acquiring an actual production specification, obtaining a correction current intensity based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the correction current intensity so as to control the production executing mechanism to continue electrolysis.
Further, the obtaining the actual production specification, obtaining a corrected current intensity based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis, including:
obtaining a first production deviation value according to the actual production specification and the target production specification;
correcting the initial current intensity based on the preset electrolytic model according to the first production deviation value to obtain the corrected current intensity;
and sending a signal to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis.
Further, before the actual production specification is obtained, the corrected current intensity is obtained based on the preset electrolysis model according to the actual production specification and the target production specification, and a signal is sent to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis, the method further comprises:
and acquiring an actual production specification, obtaining corrected electrolysis time based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected electrolysis time so as to control the production executing mechanism to continue electrolysis.
Further, the obtaining the actual production specification, obtaining a corrected electrolysis time based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected electrolysis time to control the production executing mechanism to continue electrolysis, including:
obtaining a second production deviation value according to the actual production specification and the target production specification;
correcting the initial electrolysis time based on the preset electrolysis model according to the second production deviation value to obtain the corrected electrolysis time;
and sending a signal to the production executing mechanism according to the corrected electrolysis time so as to control the production executing mechanism to continue electrolysis.
Further, the sending a signal to the production executing mechanism according to the corrected electrolysis time to control the production executing mechanism to continue electrolysis, including:
acquiring cathode roller specification parameters of the cathode roller;
obtaining a target cathode roller rotating speed according to the cathode roller specification parameters and the corrected electrolysis time;
and sending a signal to the production executing mechanism according to the target cathode roller rotating speed so as to control the production executing mechanism to continue electrolysis.
Further, the sending a signal to the production executing mechanism according to the target cathode roller rotating speed to control the production executing mechanism to continue electrolysis, including:
acquiring motor specification parameters of the motor and transmission specification parameters of the reduction transmission mechanism;
obtaining a target motor rotating speed according to the motor specification parameters, the transmission specification parameters and the target cathode roller rotating speed;
and sending a signal to the production executing mechanism according to the target motor rotating speed so as to control the production executing mechanism to continue electrolysis.
Further, the preset electrolysis model includes:
M＝KITη
wherein M is the production specification, K is electrochemical equivalent, I is current intensity, T is electrolysis time, and eta is current efficiency value.
Further, the obtaining the target current efficiency value includes:
transmitting a signal to the production executing mechanism to perform trial production to obtain trial production product parameters and actual mechanism state parameters of the production executing mechanism;
obtaining an initial current efficiency value according to the actual mechanism state parameter;
and correcting the initial current efficiency value according to the production trial product parameters to obtain the target current efficiency value.
The invention provides an electrolytic copper foil accurate production system and an electrolytic copper foil accurate production method, wherein the system comprises a production executing mechanism and a production control module, during production, a target current efficiency value is firstly obtained, then a target production specification is obtained, according to the target production specification, initial electrolysis time and initial current intensity are obtained based on a preset electrolysis model and the target current efficiency value, then a signal is sent to the production executing mechanism according to the initial electrolysis time and the initial current intensity, so as to control the production executing mechanism to start electrolysis, finally an actual production specification is obtained, according to the actual production specification and the target production specification, a correction current intensity is obtained based on the preset electrolysis model, and a signal is sent to the production executing mechanism according to the correction current intensity, so that the production executing mechanism is controlled to continue electrolysis. Compared with the prior art, the invention adopts the non-fixed current instead of the fixed parameter, and adjusts the current intensity to be corrected at any time in the production process, so that the production has flexibility and accuracy.
Drawings
FIG. 1 is a system architecture diagram of an embodiment of an electrolytic copper foil accurate production system provided by the invention;
FIG. 2 is a flow chart showing a method for precisely producing an electrolytic copper foil according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for precisely producing an electrolytic copper foil according to still another embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and together with the description serve to explain the principles of the invention, and are not intended to limit the scope of the invention.
In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
According to the invention, the purpose of accurate control is achieved by adjusting the parameters of the electrolytic current intensity in the production process of the electrolytic copper foil.
The invention provides an electrolytic copper foil accurate production system and an electrolytic copper foil accurate production method, which are respectively described below.
Referring to fig. 1, in one embodiment of the present invention, an electrolytic copper foil accurate production system is disclosed, which includes a production executing mechanism 110 and a production control module 120, wherein the production executing mechanism is used for electrolyzing copper foil, the production executing mechanism 110 is electrically connected with the production control module 120, and the production control module includes an efficiency value determining module 121, an initial parameter calculating module 122, a production starting module 123 and a production adjusting module 124, which are electrically connected in sequence, wherein:
the efficiency value determining module 121 is configured to obtain a target current efficiency value;
the initial parameter calculation module 122 is configured to obtain a target production specification, and obtain an initial electrolysis time and an initial current intensity based on a preset electrolysis model and the target current efficiency value according to the target production specification;
the production start module 123 is configured to send a signal to the production actuator according to the initial electrolysis time and the initial current intensity, so as to control the production actuator to start electrolysis;
the production adjustment module 124 is configured to obtain an actual production specification, obtain a corrected current intensity based on the preset electrolysis model according to the actual production specification and the target production specification, and send a signal to the production execution mechanism according to the corrected current intensity, so as to control the production execution mechanism to continue electrolysis.
The invention provides an electrolytic copper foil accurate production system and an electrolytic copper foil accurate production method, wherein the system comprises a production executing mechanism and a production control module, during production, a target current efficiency value is firstly obtained, then a target production specification is obtained, according to the target production specification, initial electrolysis time and initial current intensity are obtained based on a preset electrolysis model and the target current efficiency value, then a signal is sent to the production executing mechanism according to the initial electrolysis time and the initial current intensity, so as to control the production executing mechanism to start electrolysis, finally an actual production specification is obtained, according to the actual production specification and the target production specification, a correction current intensity is obtained based on the preset electrolysis model, and a signal is sent to the production executing mechanism according to the correction current intensity, so that the production executing mechanism is controlled to continue electrolysis. Compared with the prior art, the invention adopts the non-fixed current instead of the fixed parameter, and adjusts the current intensity to be corrected at any time in the production process, so that the production has flexibility and accuracy.
In a preferred embodiment, the production executing mechanism further comprises a motor, a speed reduction transmission mechanism, a cathode roller and an electrolytic tank, wherein the motor is in transmission connection with the speed reduction transmission mechanism, the speed reduction transmission mechanism is in transmission connection with the cathode roller, and the peripheral surface of the cathode roller extends into the electrolytic tank. It will be appreciated that parts other than the above parts are prior art in practice for use in the production actuator for electrolytic copper foil, and therefore will not be described in any greater detail herein.
In order to better implement the precise production system of the electrolytic copper foil in the embodiment of the invention, correspondingly, with reference to fig. 2, on the basis of the previous embodiment of the precise production system of the electrolytic copper foil, the invention also provides a precise production method of the electrolytic copper foil, which is applied to the precise production system of the electrolytic copper foil in the previous embodiment, and comprises the following steps:
s201, obtaining a target current efficiency value;
s202, acquiring a target production specification, and acquiring initial electrolysis time and initial current intensity based on a preset electrolysis model and the target current efficiency value according to the target production specification;
s203, sending a signal to the production executing mechanism according to the initial electrolysis time and the initial current intensity so as to control the production executing mechanism to start electrolysis;
s204, acquiring an actual production specification, obtaining a correction current intensity based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the correction current intensity so as to control the production executing mechanism to continue electrolysis.
In a preferred embodiment, the preset electrolysis model comprises:
M＝KITη
wherein M is the production specification, K is electrochemical equivalent, I is current intensity, T is electrolysis time, and eta is current efficiency value. The production specification M, namely the weight of the electrodeposited layer, is the specification and model of the product, is measured by the surface density (gram weight per square centimeter) of the product, is a final product produced, and is also a final object for quality control by people. The electrochemical equivalent K refers to the amount of a substance precipitated by passing the same amount of electricity (typically 1C) in different electrolytes, for example, 1g equivalent of any substance passes the amount of electricity of 95600C or 26.8A, and in this embodiment, the electrochemical equivalent is 1.186g/A.h, which can be practically determined according to the circumstances. The current intensity I is measured in amperes (a) and is the production condition that can be regulated in production, not the final control object. The electrolysis time T is the residence time of the continuously operating electrode (cathode roll) in the cell, which in this embodiment can be controlled by the linear speed of rotation of the cathode roll. The linear velocity of the cathode roller is transmitted by the rotation speed of the motor through a speed reducing mechanism. The control of the motor speed controls the cathode roller linear speed and indirectly controls the electrolysis time. The current efficiency eta is a percentage, is changed in real time along with the running condition of the equipment, is a main interference source, and is not replaced by a fixed value at will, and is accurately calculated and controlled.
The specific deduction process of the preset electrolysis model is as follows:
faraday's first law of electrolysis: the weight of the material deposited on the electrode is proportional to the current intensity and the time of passage, i.e. to the amount of electricity that passes.
m＝Kit＝kQ
Wherein: m is the amount of precipitated (or dissolved) substance per gram on the electrode; i is the intensity of the passing current/A; t is the passing time/h; q is the amount of power passed/(A.h); m is a proportionality constant.
Faraday's law of electrolysis: in different electrolytes, the weight of the precipitated material in the solutions is proportional to its stoichiometry and 1g equivalent of any precipitated material is determined by the passage of 96500C or 26.8 a.h.
Wherein: m is the amount of precipitated (or dissolved) substance per gram on the electrode; q is the amount of power passed/(A.h); n is the gram equivalent of the substance; f is the amount of electricity required for precipitation (or dissolution) of 1g of a substance on an electrode during electrolysis.
To sum up the two formulas, the electrochemical equivalent K is obtained:
the above formula shows that the electrochemical equivalent of each substance is proportional to their atomic weight and inversely proportional to their valence. For a valence-changing element, the electrochemical equivalents are different because of the different equivalent values of the different valence states. Copper is monovalent in this example.
Cu + +e＝Cu
Therefore, the electrochemical equivalent of monovalent copper is 63.55/2/26.8=1.186 g/A.h
Due to the presence of side reactions:
Zn 2+ +2e→Zn
2H + +2e→H 2 ↑
thus, the amount of electricity fed to the electrolyzer presents an efficiency problem. The mass of the actual precipitated material is always different from the theoretical calculated weight, and the ratio of the actual precipitated weight to the theoretical calculated weight is expressed in percent, called current efficiency, and is often expressed in "η".
Wherein m is the weight/g of the actually precipitated substance; i is current/A; t is time/h; k is electrochemical equivalent/[ g× (a×h) ] -1 】。
To sum up a series of formulas, the preset electrolytic model in the application can be obtained.
It will be appreciated that in practice, other models may be selected as the preset electrolysis model according to the specific circumstances.
In a preferred embodiment, the step S201 of obtaining the target current efficiency value specifically includes:
transmitting a signal to the production executing mechanism to perform trial production to obtain trial production product parameters and actual mechanism state parameters of the production executing mechanism;
obtaining an initial current efficiency value according to the actual mechanism state parameter;
and correcting the initial current efficiency value according to the production trial product parameters to obtain the target current efficiency value.
In the existing production process, fixed current efficiency values are adopted for calculation, so that production is guided. In actual operation, the current efficiency is not a fixed value under the influence of factors such as temperature, pressure, electrolyte concentration, electrode and electrode distance of chemical components (such as chloride ion content, acid content and the like) and the material and shape of the electrolytic cell. The current efficiency of the same production equipment in different working conditions and different time periods is not a fixed value. The use of a fixed current efficiency value causes errors.
Therefore, in this example, the production test was performed before the actual production. And obtaining a correct current efficiency value (namely an initial current efficiency value) by using the test result (namely the test production product parameter) and combining the current intensity and the cathode roller rotating speed (namely the actual mechanism state parameter) during test production. And (3) carrying out product inspection at the beginning and the end of each batch, and correcting the current efficiency value (namely obtaining a target current efficiency value) to form a closed-loop quality control mode. The process can be repeatedly performed, so that accurate current efficiency values of different working conditions of different production equipment can be obtained, and product errors caused by inaccurate current efficiency values are eliminated.
Further, in a preferred embodiment, step S204, obtaining an actual production specification, obtaining a corrected current intensity based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected current intensity to control the production executing mechanism to continue electrolysis, which specifically includes:
obtaining a first production deviation value according to the actual production specification and the target production specification;
correcting the initial current intensity based on the preset electrolytic model according to the first production deviation value to obtain the corrected current intensity;
and sending a signal to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis.
By adjusting the current intensity in the above process, accurate control in the production process can be realized, and the specific principles will be described later in detail.
Further, as shown in connection with fig. 3, in a preferred embodiment, before step S204, the method further includes:
s205, acquiring an actual production specification, obtaining corrected electrolysis time based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected electrolysis time so as to control the production executing mechanism to continue electrolysis.
Although the final specification can be controlled by adjusting the electrolysis time, the accuracy is far less than that of adjusting the current intensity, and in the embodiment, the electrolysis time is adjusted first, and then the current intensity is adjusted, so that the effects of coarse adjustment and fine adjustment are achieved.
Specifically, in a preferred embodiment, the obtaining the actual production specification, obtaining a corrected electrolysis time based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected electrolysis time to control the production executing mechanism to continue electrolysis, which includes:
obtaining a second production deviation value according to the actual production specification and the target production specification;
correcting the initial electrolysis time based on the preset electrolysis model according to the second production deviation value to obtain the corrected electrolysis time;
and sending a signal to the production executing mechanism according to the corrected electrolysis time so as to control the production executing mechanism to continue electrolysis.
There are many specific means for adjusting the electrolysis time, which are required to be determined according to the structure of the actual production actuator, so, in combination with the specific structure of the production actuator in the foregoing embodiment, in a preferred embodiment, the step of sending a signal to the production actuator according to the corrected electrolysis time to control the production actuator to continue electrolysis specifically includes:
acquiring cathode roller specification parameters of the cathode roller;
obtaining a target cathode roller rotating speed according to the cathode roller specification parameters and the corrected electrolysis time;
and sending a signal to the production executing mechanism according to the target cathode roller rotating speed so as to control the production executing mechanism to continue electrolysis.
Further, in a preferred embodiment, the sending a signal to the production executing mechanism according to the target cathode roller rotation speed in the above process to control the production executing mechanism to continue electrolysis specifically includes:
acquiring motor specification parameters of the motor and transmission specification parameters of the reduction transmission mechanism;
obtaining a target motor rotating speed according to the motor specification parameters, the transmission specification parameters and the target cathode roller rotating speed;
and sending a signal to the production executing mechanism according to the target motor rotating speed so as to control the production executing mechanism to continue electrolysis.
The present invention also provides a more detailed embodiment for more clearly describing the above steps S204 and S205:
in the production process of this example, the electrolysis time is the residence time of the continuously operated electrode (cathode roll) in the electrolytic cell, controlled by the linear velocity of the rotation of the cathode roll. The linear velocity is calculated by the motor rotation speed, the reduction ratio of the reduction mechanism, the diameter of the cathode roller and the circumferential rate. Since the peripheral rate is an irrational number, the calculated linear velocity is an approximation, and if the approximation is directly used for control, a product error is caused.
Therefore, in the embodiment, the rotating speed of the motor is directly controlled, the linear speed of the cathode roller is indirectly controlled, and finally the electrolysis time is controlled. The following results can be obtained by experiments:
in the apparatus of this embodiment, the cathode roll specification parameters include: the cathode roll diameter was 2.016 meters and the cathode roll width was 1.39 meters. The transmission specification parameters include: speed reduction ratio 1045.3 of the speed reduction mechanism. The motor specification parameters include upper and lower limits of motor rotation speed, etc. Electrochemical equivalent 1.186, current efficiency 97%.
1) The product with a gram weight 855 is produced with a current 34000A and a required line speed equal to about 0.548 meters per minute.
Different linear velocities were used around the 0.548 value range and the grammage of the product produced was as shown in the following table:
table 1 comparison of production results based on different line speeds
| Production current (A) | Linear velocity (m/min) | Gram weight (g/m) 2 ) |
| 34000 | 0.54 | 868.5 |
| 34000 | 0.55 | 852.7 |
| 34000 | 0.56 | 837.5 |
2) The product with gram weight 855 was produced with current 34000A and the required motor speed was about 90.53RPM.
Using different motor speeds around the 90.53 value range, the grammage of the product produced is as follows:
table 2 comparison of the results of the production based on different motor speeds
| Production current (A) | Motor rotation speed (RPM) | Gram weight (g/m) 2 ) |
| 34000 | 90 | 860.1 |
| 34000 | 91 | 850.1 |
| 34000 | 92 | 841.4 |
As can be seen from a combination of tables 1 and 2, the grammage of the product obtained by producing a product with a grammage of 855, a production current of 34000A, and a linear velocity of 0.01m/min each time (the resolution is the minimum unit controllable in actual production) varies by 15.23 g. And when the motor rotation speed is adjusted by 1rmp (the resolution is the minimum unit which can be controlled in actual production), the gram weight of the obtained product changes by 9.25 g. Different control concepts and methods can be used to control different process parameters to achieve distinct control effects. The control linear speed is converted into the control motor rotating speed, so that the control precision can be improved, and errors caused by irrational number participation calculation are eliminated.
Furthermore, the fixed current intensity is adopted in the existing production process, the electrolysis time is adjusted to carry out production, and the result shows that the product has errors. The present invention does not use a fixed current for production. The following results can be obtained by experiments:
based on the same equipment, the diameter of the cathode roller is 2.016 m, the width of the cathode roller is 1.39 m, the reduction ratio of the reduction mechanism is 1045.3, the electrochemical equivalent is 1.186, and the current efficiency is 97%.
The product gram weight 855, motor speed 91RPM, required current 34175.63a, was produced using different current levels around the 34175.63 value range, and the gram weights were produced as shown in the following table:
TABLE 3 comparison of production results based on different amperages
| Motor rotation speed (RPM) | Amperage (A) | Gram weight(g/m 2 ) |
| 91 | 34175 | 854.98413 |
| 91 | 34176 | 855.00915 |
| 91 | 34177 | 855.03417 |
As can be seen from Table 3, the grammage of the product obtained varies by 0.025 g for each adjustment of the current intensity to 1A (this resolution is the minimum unit that can be controlled in practical production). Clearly, the adjustment of the current intensity is more accurate than the method of controlling the electrolysis time. The control accuracy can be improved by 4 orders of magnitude. Can effectively eliminate product errors.
In the existing production process, the production specification is firstly determined, and then the production is carried out by using fixed current intensity. According to the foregoing, the product specification and the current intensity are fixed, the electrolysis time is also fixed, and the production speed is also fixed. The production has no flexibility, the production speed can not be adjusted in time according to the production requirement, and the error is extremely large.
Therefore, the invention selects the production specification, does not need fixed current for production, adopts flexible production speed and adjusts the current intensity in real time. The method can adjust the production speed in real time in production, has flexibility in production, and ensures the accuracy of adjustment in the production process by adjusting the current intensity. Specifically, the core of the present invention for improving accuracy is mainly embodied in the following three aspects:
1. the linear speed is controlled instead by directly controlling the motor speed.
2. Under the condition of fixed current, the original production method for adjusting the linear speed is changed into calculation and selection of proper motor rotation speed, and the current intensity is flexibly adjusted
3. The fixed current efficiency is changed into accurate calculation of the current efficiency, and real-time closed-loop adjustment is performed.
The invention provides an electrolytic copper foil accurate production system and an electrolytic copper foil accurate production method, wherein the system comprises a production executing mechanism and a production control module, during production, a target current efficiency value is firstly obtained, then a target production specification is obtained, according to the target production specification, initial electrolysis time and initial current intensity are obtained based on a preset electrolysis model and the target current efficiency value, then a signal is sent to the production executing mechanism according to the initial electrolysis time and the initial current intensity, so as to control the production executing mechanism to start electrolysis, finally an actual production specification is obtained, according to the actual production specification and the target production specification, a correction current intensity is obtained based on the preset electrolysis model, and a signal is sent to the production executing mechanism according to the correction current intensity, so that the production executing mechanism is controlled to continue electrolysis. Compared with the prior art, the invention adopts the non-fixed current instead of the fixed parameter, and adjusts the current intensity to be corrected at any time in the production process, so that the production has flexibility and accuracy.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an accurate production system of electrolytic copper foil, its characterized in that, includes production actuating mechanism and production control module, production actuating mechanism is used for the electrolysis to obtain the copper foil, production actuating mechanism electricity is connected production control module, production control module is including the efficiency value determination module, initial parameter calculation module, production start-up module and the production adjustment module that connect gradually electrically, wherein:
the efficiency value determining module is used for obtaining a target current efficiency value;
the initial parameter calculation module is used for obtaining a target production specification, and obtaining initial electrolysis time and initial current intensity based on a preset electrolysis model and the target current efficiency value according to the target production specification;
the production starting module is used for sending a signal to the production executing mechanism according to the initial electrolysis time and the initial current intensity so as to control the production executing mechanism to start electrolysis;
the production adjusting module is used for obtaining actual production specifications, obtaining corrected current intensity based on the preset electrolysis model according to the actual production specifications and the target production specifications, and sending a signal to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis.
2. The precise production system of the electrolytic copper foil according to claim 1, wherein the production executing mechanism further comprises a motor, a reduction transmission mechanism, a cathode roller and an electrolytic tank, wherein the motor is connected with the reduction transmission mechanism in a transmission manner, the reduction transmission mechanism is connected with the cathode roller in a transmission manner, and the peripheral surface of the cathode roller extends into the electrolytic tank.
3. An electrolytic copper foil accurate production method applied to the electrolytic copper foil accurate production system according to claim 2, comprising:
obtaining a target current efficiency value;
obtaining a target production specification, and obtaining initial electrolysis time and initial current intensity based on a preset electrolysis model and the target current efficiency value according to the target production specification;
sending a signal to the production executing mechanism according to the initial electrolysis time and the initial current intensity so as to control the production executing mechanism to start electrolysis;
and acquiring an actual production specification, obtaining a correction current intensity based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the correction current intensity so as to control the production executing mechanism to continue electrolysis.
4. The method for precisely producing an electrolytic copper foil according to claim 3, wherein the obtaining an actual production specification, obtaining a corrected current intensity based on the preset electrolytic model according to the actual production specification and the target production specification, and transmitting a signal to the production actuator according to the corrected current intensity to control the production actuator to continue electrolysis, comprises:
obtaining a first production deviation value according to the actual production specification and the target production specification;
correcting the initial current intensity based on the preset electrolytic model according to the first production deviation value to obtain the corrected current intensity;
and sending a signal to the production executing mechanism according to the corrected current intensity so as to control the production executing mechanism to continue electrolysis.
5. The method according to claim 3, wherein before said obtaining an actual production specification, and based on said actual production specification and said target production specification, obtaining a corrected current intensity based on said preset electrolytic model, and sending a signal to said production actuator according to said corrected current intensity to control said production actuator to continue electrolysis, further comprising:
and acquiring an actual production specification, obtaining corrected electrolysis time based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected electrolysis time so as to control the production executing mechanism to continue electrolysis.
6. The method according to claim 5, wherein the obtaining the actual production specification, obtaining a corrected electrolysis time based on the preset electrolysis model according to the actual production specification and the target production specification, and sending a signal to the production executing mechanism according to the corrected electrolysis time to control the production executing mechanism to continue electrolysis, comprises:
obtaining a second production deviation value according to the actual production specification and the target production specification;
correcting the initial electrolysis time based on the preset electrolysis model according to the second production deviation value to obtain the corrected electrolysis time;
and sending a signal to the production executing mechanism according to the corrected electrolysis time so as to control the production executing mechanism to continue electrolysis.
7. The method for precisely producing an electrolytic copper foil according to claim 6, wherein the transmitting a signal to the production actuator according to the corrected electrolytic time to control the production actuator to continue electrolysis comprises:
acquiring cathode roller specification parameters of the cathode roller;
obtaining a target cathode roller rotating speed according to the cathode roller specification parameters and the corrected electrolysis time;
and sending a signal to the production executing mechanism according to the target cathode roller rotating speed so as to control the production executing mechanism to continue electrolysis.
8. The method for precisely producing an electrolytic copper foil according to claim 7, wherein the step of transmitting a signal to the production actuator according to the target cathode roller rotation speed to control the production actuator to continue electrolysis comprises:
acquiring motor specification parameters of the motor and transmission specification parameters of the reduction transmission mechanism;
obtaining a target motor rotating speed according to the motor specification parameters, the transmission specification parameters and the target cathode roller rotating speed;
and sending a signal to the production executing mechanism according to the target motor rotating speed so as to control the production executing mechanism to continue electrolysis.
9. The method for precisely producing an electrolytic copper foil according to claim 3, wherein the predetermined electrolytic model comprises:
M＝KITη
wherein M is the production specification, K is electrochemical equivalent, I is current intensity, T is electrolysis time, and eta is current efficiency value.
10. The method for precisely producing an electrolytic copper foil according to claim 3, wherein the obtaining a target current efficiency value comprises:
transmitting a signal to the production executing mechanism to perform trial production to obtain trial production product parameters and actual mechanism state parameters of the production executing mechanism;
obtaining an initial current efficiency value according to the actual mechanism state parameter;
and correcting the initial current efficiency value according to the production trial product parameters to obtain the target current efficiency value.
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