CN117107303A - Lithium-ion copper foil all-in-one machine thickness control method based on artificial intelligent control - Google Patents
Lithium-ion copper foil all-in-one machine thickness control method based on artificial intelligent control Download PDFInfo
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- CN117107303A CN117107303A CN202210536045.5A CN202210536045A CN117107303A CN 117107303 A CN117107303 A CN 117107303A CN 202210536045 A CN202210536045 A CN 202210536045A CN 117107303 A CN117107303 A CN 117107303A
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- China
- Prior art keywords
- copper foil
- thickness
- lithium
- liquid feeding
- integrated machine
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 239000011889 copper foil Substances 0.000 title claims abstract description 89
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 60
- 239000000126 substance Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 238000013473 artificial intelligence Methods 0.000 claims description 13
- 238000009826 distribution Methods 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D1/00—Electroforming
- C25D1/04—Wires; Strips; Foils
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
Abstract
The invention provides a thickness control method of a lithium-ion battery copper foil integrated machine based on artificial intelligent control, wherein a copper foil is divided into n units along the width, and the thickness of the copper foil is controlled by independently controlling the flow rate of liquid feeding for each unit; the lithium-ion copper foil integrated machine further comprises a liquid feeding electric valve, and each unit is formed by independently controlling the liquid feeding flow through the liquid feeding electric valve; the lithium-ion copper foil integrated machine comprises a thickness gauge, wherein the thickness gauge is used for detecting and scanning the total amount of substances in each unit area and converting the total amount of substances into the thickness or the surface density of the copper foil in each unit; according to the thickness change of each unit, a regression equation of each unit is calculated by using a least square method, the regression equation is a control model of the unit, and the control system sets PID parameters according to the model to carry out output control on the liquid feeding electric valve so as to solve the problem of thickness control in copper foil production.
Description
Technical Field
The invention relates to the field of electrolytic copper foil production, in particular to a method for controlling the thickness of a lithium-ion copper foil integrated machine based on artificial intelligent control.
Background
The preparation process of the electrolytic copper foil comprises the steps of rotating a conductive cathode roller at a certain speed in an electrolytic tank filled with a copper sulfate solution, arranging an anode plate at the bottom of the electrolytic tank, depositing copper ions on the cathode roller under the traction of an electric field, rotating the cathode roller out of the electrolytic tank, and stripping and winding the copper foil from the cathode roller. In the production process of the copper foil, the instability of the copper sulfate solution can influence the uniformity of the foil surface of the copper foil generated on the cathode roller, and the production quality of the copper foil is influenced.
The electrolytic copper foil for DB-44-T-837-2010 lithium ion battery is required to have a thickness unevenness of not more than 2%, which is mainly considered from the requirements of coating a negative electrode active material, normal charge and discharge of a lithium battery, and the like.
The existing research routes are all to start with the foil production process of the copper foil to improve the thickness non-uniformity of the copper foil. Through the foil producing process, the thickness non-uniformity of the copper foil can be controlled to be about 2% -5%.
However, as lithium battery customers have increasingly higher requirements on the quality of the delivered copper foil (some customers require less than 0.5% non-uniformity in copper foil thickness), it is difficult to address the copper foil production process.
The prior art does not adopt an artificial intelligence control strategy, so that the thickness of a product is lack of control, and therefore, a new technical route is needed to solve the non-uniformity of the thickness of the copper foil.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is directed to providing a method for controlling thickness of a lithium-ion integrated copper foil machine based on artificial intelligence control, which is used for solving the problem of lack of control of thickness of copper foil in the prior art.
To achieve the above and other related objects, the present invention provides a thickness control method for a lithium-ion copper foil integrated machine based on artificial intelligence control, wherein:
the copper foil is divided into n units along the width, and the thickness of the copper foil is controlled by independently controlling the liquid feeding flow of each unit;
the lithium-ion copper foil integrated machine further comprises a liquid feeding electric valve, and each unit is formed by independently controlling the liquid feeding flow through the liquid feeding electric valve;
the lithium-ion copper foil integrated machine comprises a thickness gauge, wherein the thickness gauge is used for detecting and scanning the total amount of substances in each unit area and converting the total amount of substances into the thickness or the surface density of the copper foil in each unit;
there is a linear relationship between copper foil thickness and top flow: y=a+bx;
wherein a is a regression constant and b is a regression coefficient; x is the actually measured thickness of the copper foil, y is the valve opening of the liquid feeding electric valve, and the valve opening controls the liquid feeding flow;
calculating the average value of x and y by the linear relation
Then according toCalculating a and b by using the linear relation:
then, according to the actually measured x value, a value of y can be given, and the liquid feeding electric valve is subjected to output control.
The thickness control method of the lithium-ion copper foil integrated machine based on artificial intelligence control comprises the following steps: after the lithium-ion copper foil integrated machine is rolled down or restarted for liquid feeding every time, a new regression equation can be obtained again after the system resets, and the production and control of the next roll are carried out.
The thickness control method of the lithium-ion copper foil integrated machine based on artificial intelligence control comprises the following steps: the lithium-ion copper foil integrated machine comprises an anode groove, a flow distribution device for feeding liquid and a mixed flow box, wherein the flow distribution device and the mixed flow box are arranged in the width direction when electrolyte enters the anode groove.
The thickness control method of the lithium-ion copper foil integrated machine based on artificial intelligence control comprises the following steps: the flow distribution device comprises n liquid inlet pipes, and the liquid inlet pipes are used for respectively and independently adjusting the liquid inlet amount of the electrolyte.
The thickness control method of the lithium-ion copper foil integrated machine based on artificial intelligence control comprises the following steps: the lithium-ion copper foil integrated machine comprises a CPU, a high-speed analog quantity module, an I/O module and a human-computer interface operation terminal, wherein the CPU, the high-speed analog quantity module and the I/O module are connected and controlled to the thickness gauge, and the I/O module is controlled and connected with the liquid feeding electric valve; the human-computer interface operation terminal is provided with a face recognition system.
As described above, the complete invention name of the present invention has the following advantageous effects:
the invention provides a thickness control method of a lithium-ion battery copper foil integrated machine based on artificial intelligent control, wherein a copper foil is divided into n units along the width, and the thickness of the copper foil is controlled by independently controlling the flow rate of liquid feeding for each unit; the lithium-ion copper foil integrated machine further comprises a liquid feeding electric valve, and each unit is formed by independently controlling the liquid feeding flow through the liquid feeding electric valve; the lithium-ion copper foil integrated machine comprises a thickness gauge, wherein the thickness gauge is used for detecting and scanning the total amount of substances in each unit area and converting the total amount of substances into the thickness or the surface density of the copper foil in each unit; according to the thickness change of each unit, a regression equation of each unit is calculated by using a least square method, the regression equation is a control model of the unit, and the control system sets PID parameters according to the model to carry out output control on the liquid feeding electric valve so as to solve the problem of thickness control in copper foil production.
Drawings
FIG. 1 is a schematic front view of a lithium-ion copper foil integrated machine according to the present invention;
FIG. 2 is a schematic side view of a lithium-ion copper foil integrated machine according to the present invention;
description of element numbers:
1. an anode cell body; 2. a cathode roller driving device; 3. cathode roller conductive device; 4. an O-shaped ring circulating device; 5. a tension control device; 6. a cleaning device; 7. an oxidation preventing treatment device; 8. a drying device; 9. a trimming device; 10. a winding device; 11. an online polishing device; 12. an electrical device and a control system; 13. a thickness gauge; 14. a liquid feeding electric valve; 15. a total liquid feeding pipe; 16. a liquid inlet pipe.
Detailed Description
Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.
Please refer to fig. 1-2. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or adjustments of size, which would otherwise be used in the practice of the present invention, would be apparent to those skilled in the art without departing from the spirit and scope of the present invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Referring to fig. 1 and 2, the present invention provides a thickness control method for a lithium-ion copper foil integrated machine based on artificial intelligence control, wherein:
the copper foil is divided into n units along the width, and the thickness of the copper foil is controlled by independently controlling the liquid feeding flow of each unit;
the lithium-ion copper foil integrated machine also comprises a liquid feeding electric valve 14, and each unit is formed by independently controlling the liquid feeding flow rate by the liquid feeding electric valve 14;
the lithium-ion copper foil integrated machine comprises a thickness gauge 13, wherein before the lithium-ion copper foil integrated machine is rolled, an X-ray thickness gauge 13 is arranged, and the thickness gauge 13 is used for detecting and scanning the total amount of substances in each unit area and converting the total amount of substances into the thickness or the surface density of the copper foil in each unit; specifically, the X-ray thickness gauge 13 is used for scanning and detecting the produced copper foil, all data acquired in all detection time can be recorded according to the thickness result of detection scanning, and the time can be selected according to the requirement to observe the data recorded by one banner unit when walking. The whole width direction is divided into 13-16 units, and each unit independently controls the liquid feeding flow rate so as to achieve the purpose of adjusting the thickness. And according to the detected thickness change of each unit, calculating a regression equation of each unit by using a least square method, wherein the regression equation is a control model of the unit, and the control system sets PID parameters according to the model to carry out output control on the liquid feeding electric valve 14.
Specifically, there is a linear relationship between copper foil thickness and on-stream flow: y=a+bx;
wherein a is a regression constant and b is a regression coefficient; x is the actually measured thickness of the copper foil, y is the valve opening of the liquid feeding electric valve 14, and the valve opening controls the liquid feeding flow;
calculating the average value of x and y by the linear relation
Then according toCalculating a and b by using the linear relation:
then, the value of y can be given from the measured value of x, and the electrohydraulic valve 14 is output-controlled.
Further, after the lithium-ion copper foil integrated machine is rolled down each time (generally for 3-4 days) or is restarted for feeding liquid, a new regression equation can be obtained again after the system resets, and the production and control of the next roll are carried out.
Further, the lithium-ion copper foil integrated machine comprises an anode tank, a flow distribution device and a mixed flow box, wherein the flow distribution device and the mixed flow box are arranged in the width direction when electrolyte enters the anode tank, the electrolyte flow distribution is more uniform when the electrolyte enters the anode tank through the mixed flow box, and meanwhile, the original turbulence is changed into laminar flow when the electrolyte enters the tank body.
Further, the flow distribution device comprises a total liquid feeding pipe 15 and n liquid feeding pipes 16, wherein the liquid feeding pipes 16 are connected to the total liquid feeding pipe 15, and the liquid feeding amounts of the electrolyte are respectively and independently adjusted through the liquid feeding pipes 16.
Further, the lithium-ion copper foil integrated machine comprises a CPU, a high-speed analog quantity module, an I/O module and a human-computer interface operation terminal, wherein the CPU, the high-speed analog quantity module and the I/O module are connected with a control thickness gauge 13, and the I/O module is in control connection with a liquid feeding electric valve 14; the human-computer interface operation terminal performs centralized operation and program control, the human-computer interface operation terminal is provided with a face recognition system, a special plane is operated by a special person, and other persons cannot modify operation parameters.
Further, the lithium electricity copper foil all-in-one concrete structure still includes: the lithium-ion copper foil integrated machine comprises an anode tank body 1, a cathode roller driving device 2, a cathode roller conducting device 3, an O-shaped ring circulating device 4, a tension control device 5, a cleaning device 6, an anti-oxidation treatment device 7, a drying device 8, a trimming device 9, a winding device 10, an online polishing device 11, electrical equipment and a control system 12, wherein the electrical equipment and control system 12 comprises the CPU, a high-speed analog module, an I/O module and a human-computer interface operation terminal, and the electrical equipment inside the lithium-ion copper foil integrated machine is controlled through the human-computer interface operation terminal, so that various functions of the lithium-ion copper foil integrated machine are realized.
In summary, the invention provides a thickness control method of a lithium-ion copper foil integrated machine based on artificial intelligent control, wherein the copper foil is divided into n units along the width, and the thickness of the copper foil is controlled by independently controlling the liquid feeding flow of each unit; the lithium-ion copper foil integrated machine also comprises a liquid feeding electric valve 14, and each unit is formed by independently controlling the liquid feeding flow rate by the liquid feeding electric valve 14; the lithium-ion copper foil integrated machine comprises a thickness gauge 13, wherein the thickness gauge 13 is used for detecting and scanning the total amount of substances in each unit area and converting the total amount of substances into the thickness or the surface density of the copper foil in each unit; according to the thickness change of each unit, a regression equation of each unit is calculated by using a least square method, the regression equation is a control model of the unit, and the control system sets PID parameters according to the model to carry out output control on the liquid feeding electric valve 14 so as to solve the problem of thickness control in copper foil production. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (5)
1. A thickness control method of a lithium-ion copper foil integrated machine based on artificial intelligence control is characterized by comprising the following steps of:
the copper foil is divided into n units along the width, and the thickness of the copper foil is controlled by independently controlling the liquid feeding flow of each unit;
the lithium-ion copper foil integrated machine further comprises a liquid feeding electric valve, and each unit is formed by independently controlling the liquid feeding flow through the liquid feeding electric valve;
the lithium-ion copper foil integrated machine comprises a thickness gauge, wherein the thickness gauge is used for detecting and scanning the total amount of substances in each unit area and converting the total amount of substances into the thickness or the surface density of the copper foil in each unit;
there is a linear relationship between copper foil thickness and top flow: y=a+bx;
wherein a is a regression constant and b is a regression coefficient; x is the actually measured thickness of the copper foil, y is the valve opening of the liquid feeding electric valve, and the valve opening controls the liquid feeding flow;
calculating the average value of x and y by the linear relation
Then according toCalculating a and b by using the linear relation:
then, according to the actually measured x value, a value of y can be given, and the liquid feeding electric valve is subjected to output control.
2. The method for controlling the thickness of the lithium-ion copper foil integrated machine based on artificial intelligence control according to claim 1 is characterized by comprising the following steps: after the lithium-ion copper foil integrated machine is rolled down or restarted for liquid feeding every time, a new regression equation can be obtained again after the system resets, and the production and control of the next roll are carried out.
3. The method for controlling the thickness of the lithium-ion copper foil integrated machine based on artificial intelligence control according to claim 1 is characterized by comprising the following steps: the lithium-ion copper foil integrated machine comprises an anode groove, a flow distribution device for feeding liquid and a mixed flow box, wherein the flow distribution device and the mixed flow box are arranged in the width direction when electrolyte enters the anode groove.
4. The method for controlling the thickness of the lithium-ion copper foil integrated machine based on artificial intelligence control according to claim 1 is characterized by comprising the following steps: the flow distribution device comprises n liquid inlet pipes, and the liquid inlet pipes are used for respectively and independently adjusting the liquid inlet amount of the electrolyte.
5. The method for controlling the thickness of the lithium-ion copper foil integrated machine based on artificial intelligence control according to claim 1 is characterized by comprising the following steps: the lithium-ion copper foil integrated machine comprises a CPU, a high-speed analog quantity module, an I/O module and a human-computer interface operation terminal, wherein the CPU, the high-speed analog quantity module and the I/O module are connected and controlled to the thickness gauge, and the I/O module is controlled and connected with the liquid feeding electric valve; the human-computer interface operation terminal is provided with a face recognition system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536045.5A CN117107303A (en) | 2022-05-17 | 2022-05-17 | Lithium-ion copper foil all-in-one machine thickness control method based on artificial intelligent control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536045.5A CN117107303A (en) | 2022-05-17 | 2022-05-17 | Lithium-ion copper foil all-in-one machine thickness control method based on artificial intelligent control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117107303A true CN117107303A (en) | 2023-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210536045.5A Pending CN117107303A (en) | 2022-05-17 | 2022-05-17 | Lithium-ion copper foil all-in-one machine thickness control method based on artificial intelligent control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117107303A (en) |
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2022
- 2022-05-17 CN CN202210536045.5A patent/CN117107303A/en active Pending
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