CN102698921A - Coating device - Google Patents
Coating device Download PDFInfo
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- CN102698921A CN102698921A CN2012100079137A CN201210007913A CN102698921A CN 102698921 A CN102698921 A CN 102698921A CN 2012100079137 A CN2012100079137 A CN 2012100079137A CN 201210007913 A CN201210007913 A CN 201210007913A CN 102698921 A CN102698921 A CN 102698921A
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Abstract
The invention belongs to the field of production equipment, and particularly relates to a coating device which can improve coating consistency of lithium battery pole pieces. The coating device comprises a coating unit, a measuring unit, a feedback control unit and a rolling-up unit, wherein the coating unit is connected with the measuring unit, one end of the feedback control unit is connected with the measuring unit, and signals obtained by the measuring unit are fed back to the coating unit. Compared with the prior art, according to the coating device, the high yield can be brought by adopting the non-contact measurement, so that the material loss can be reduced, and the production cost is reduced; the online real-time measurement and the feedback control greatly improves the coating consistency, the battery capacity distribution range is narrowed, the capacity of a battery with certain volume is improved, the designed capacity allowance of the battery can also be reduced to further reduce the raw material cost, and the risk of causing safety problems due to energy imbalance of positive and negative pole pieces can be reduced; and by adopting the online real-time measurement and the feedback control, the time of abnormal shutdown can be reduced, the production efficiency is improved, and the production cost is reduced.
Description
Technical field
The invention belongs to the production equipment field, relate in particular to a kind of lithium battery pole slice that can improve and be coated with conforming apparatus for coating.
Background technology
Lithium ion battery will be played the part of more and more important role as a kind of emerging energy storage carrier and the fresh combatants of new energy field in the process of changing the human life style.
The preparation process of lithium ion battery generally comprises stirring, is coated with, colds pressing, cutting, reel, change into and operations such as capacity.Wherein, the painting process of pole piece is the critical process in the lithium ion battery production process, and the quality of coating and the uniformity of coating directly influence capacity, security and the cost of battery.Therefore, improve the quality of painting process and the important topic that uniformity becomes the lithium battery industry.
At present, for quality and the uniformity that improves painting process, generally in coating process, increase the measurement mechanism of coating weight, and the data that measurement mechanism collects are carried out Computer Processing, obtain the coating situation.But only rely on the coating weight measurement mechanism can not really improve the quality and the uniformity of electrodes of lithium-ion batteries coating; Because after measuring the data of coating weight; Can not in time feed back to coating system; Make coating system make corresponding adjustment, and only be the situation of when coating finishes the back or is being coated with, understanding coating.
In view of this, thus necessaryly provide a kind of and can feed back coating quality and the conforming on foot apparatus for coating that apparatus for coating is made adjustment improve electrodes of lithium-ion batteries coating weight.
Summary of the invention
The objective of the invention is to: to the deficiency of prior art; Thereby can feed back coating quality and the conforming on foot apparatus for coating that apparatus for coating is made adjustment improve electrodes of lithium-ion batteries to coating weight and provide a kind of; Thereby improve the performance such as capacity, safety of lithium ion battery; Enhance productivity, reduce production costs.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of apparatus for coating comprises coater unit, measuring unit, feedback control unit and rolling unit, and coater unit is connected with measuring unit, and an end of feedback control unit connects measuring unit, gives coater unit with measuring unit gained signal feedback.
As a kind of improvement of apparatus for coating of the present invention, said coater unit comprises applicator roll, the coming hopper, be positioned at the scraper of said applicator roll top and be used to toast the baking tunnel that is coated with the back base material for the applicator roll supplies slurry of the unwinding device that is used to draw blank base material, the back flow roll that is positioned at said unwinding device downstream and said back flow roll coupling.
As a kind of improvement of apparatus for coating of the present invention, said measuring unit comprise noncontact surface density measuring instrument be used for data acquisition and analysis and Control computer, the two electrical connection.
As a kind of improvement of apparatus for coating of the present invention, comprise beta-ray radiator, ionisation chamber sensor, reciprocating mechanism and intelligent processor in the said surface density measuring instrument.
As a kind of improvement of apparatus for coating of the present invention, said feedback control unit comprises the gap measuring apparatus in programmable logic controller (PLC) and measurement scraper that is connected respectively at said programmable logic controller (PLC) and applicator roll gap, the slack adjuster that is used to regulate the speed ratio adjusting device of back flow roll and applicator roll rotating ratio and is used to regulate scraper and applicator roll gap.
As a kind of improvement of apparatus for coating of the present invention, said gap measuring apparatus comprises the optical displacement sensor that is connected with said programmable logic controller (PLC).
As a kind of improvement of apparatus for coating of the present invention, said speed ratio adjusting device comprises the frequency converter that links to each other with programmable logic controller (PLC) and is connected in the speed ratio adjusting motor between said frequency converter and the applicator roll.
As a kind of improvement of apparatus for coating of the present invention, said slack adjuster comprises the motor driver that links to each other with programmable logic controller (PLC) and is connected in the scraper adjusting motor between said motor driver and the scraper.
As a kind of improvement of apparatus for coating of the present invention, said computer contains the software that a cover contains data communication and analyzing and processing function.
As a kind of improvement of apparatus for coating of the present invention, said unwinding device, back flow roll, baking tunnel are connected through driving belt with wrap-up.
Operation principle of the present invention is: adopt noncontact surface density measuring instrument to move back and forth in real time along the vertical direction of coating pole piece moving direction; With near but the surface density of the distance that the do not contact pole piece diaphragm after to coating measure; Carry intelligent processor and be equipped with data exchange interface and the agreement between the computer of communication plug through the surface density measuring instrument; An and installation cover software on computers; Measurement data is sent to computer, and software reads speed ratio, left and right sides scraper height and equipment operational factor through the exchanges data communication module of itself and programmable logic controller (PLC) simultaneously from programmable logic controller (PLC), comprehensive surface density data and device parameter; With least square method and exponentially weighted moving average (EWMA) algorithm data are carried out analyzing and processing; Calculate rational adjusting speed ratio, left and right sides scraper height, and calculated value is passed to speed ratio adjusting device and slack adjuster respectively through programmable logic controller (PLC), thus the close-loop feedback control of formation coat side density.Monitor in real time and the close-loop feedback control system with this, guarantee coating uniformity, high efficiency, rate of good quality rate, and then reach the purpose of improving battery performance and reducing cost.
The invention has the beneficial effects as follows: non-contact measurement brings the rate of good quality rate can reduce material loss, reduces production costs; Online in real time is measured and FEEDBACK CONTROL; Significantly improve the coating uniformity, narrow the battery capacity distribution, improved the capacity of the battery of given volume; Also can reduce the capacity surplus of battery design and then reduce cost of material, also can reduce because of the unbalance risk that causes safety problem of positive/negative plate energy; Simultaneously, online in real time is measured and FEEDBACK CONTROL also can reduce the cancel closedown time, enhances productivity, and can reduce production costs equally; In addition, online in real time is measured also can provide creation data to review, and assists quality control.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment, the present invention is elaborated, wherein:
Fig. 1 is a systematic schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1; A kind of apparatus for coating of the present invention comprises coater unit 1, measuring unit 2, feedback control unit 3 and rolling unit 4, and coater unit 1 is connected with measuring unit 2; One end of feedback control unit 3 connects measuring unit 2, gives coater unit 1 with measuring unit 2 gained signal feedback.
Wherein, said coater unit 1 comprises applicator roll 13, the coming hopper 14, be positioned at the scraper 15 of said applicator roll 13 tops and be used to toast the baking tunnel 16 that is coated with the back base material for applicator roll 13 supplies slurry of the unwinding device 11 that is used to draw blank base material, the back flow roll 12 that is positioned at said unwinding device 11 downstream and said back flow roll 12 couplings.
Said measuring unit 2 comprise noncontact surface density measuring instrument 21 be used for data acquisition and analysis and Control computer 22, the two electrical connection.
Comprise beta-ray radiator 211, ionisation chamber sensor 212, reciprocating mechanism 213 and intelligent processor 214 in the said surface density measuring instrument 21.
Said feedback control unit 3 comprises programmable logic controller (PLC) 31 and the gap measuring apparatus 32 in measurement scraper that is connected respectively at said programmable logic controller (PLC) 31 15 and applicator roll 13 gaps, the slack adjuster 34 that is used to regulate the speed ratio adjusting device 33 of back flow roll 12 and applicator roll 13 rotating ratios and is used to regulate scraper 15 and applicator roll 13 gaps.
Said gap measuring apparatus 32 comprises the optical displacement sensor 321 that is connected with said programmable logic controller (PLC) 31.
Said speed ratio adjusting device 33 comprises the frequency converter 331 that links to each other with programmable logic controller (PLC) 31 and is connected in the speed ratio adjusting motor 332 between said frequency converter 331 and the applicator roll 13.
Said slack adjuster 34 comprises the motor driver 341 that links to each other with programmable logic controller (PLC) 31 and is connected in the scraper adjusting motor 342 between said motor driver 341 and the scraper 15.
Said computer 22 contains the software that a cover contains data communication and analyzing and processing function.
Said unwinding device 11, back flow roll 12, baking tunnel 16 are connected through driving belt 5 with wrap-up 4.
During actual the use; The blank base material that is used to prepare lithium battery pole slice is from unwinding device 11 outflows, and under the traction of driving belt 5, blank base material reaches back flow roll 12; The slurry of coating usefulness is hopper 14 outflows always then; Flow on the applicator roll 13, applicator roll 13 under the acting in conjunction of scraper 15 with slurry transfer coated to back flow roll 12 on, obtain dry lithium ion battery behind the tunnel 16 via baking and use pole piece.Dry pole piece is under the traction of driving belt 6, through noncontact surface density measuring instrument 21, the 4 places harvest coiled strip in the rolling unit at last.
Noncontact surface density measuring instrument 21 is in its incidental beta-ray radiator 211 and the real-time down surface density data of measuring coating on the dry pole piece non-contactly of the associated working of ionisation chamber sensor 212 and reciprocating mechanism 213 and intelligent processor 214, and the data exchange module of the software through 22 li in computer is sent to computer 22 with data.
Simultaneously, the slit height between scraper 15 and the applicator roll 13, i.e. left and right sides scraper 15 altitude informations are measured and stored to 2 high-precision optical displacement sensors 321 in real time about programmable logic controller (PLC) 31 passed through.Software also reads in real time operational factors such as the speed ratio, left and right sides scraper 15 height of coater unit 1 from programmable logic controller (PLC) 31.Package parameter and surface density data, utilization principle of least square method and exponentially weighted moving average (EWMA) algorithm carry out analyzing and processing to data, calculate the rational speed ratio and the left and right sides scraper height that make new advances.Speed ratio that the software that computer is 22 li is new with this and left and right sides scraper 15 altitude informations pass to programmable logic controller (PLC) 31 through data exchange module; Speed ratio that programmable logic controller (PLC) 31 is new with this and left and right sides scraper altitude information are as new setup parameter; Control the rotating ratio between applicator roll 13 and the back flow roll 12 respectively, and the slit height between applicator roll 13 and the scraper 15.When controlling the rotating ratio between applicator roll 13 and the back flow roll 12; Programmable logic controller (PLC) 31 is regulated motor 332 via frequency converter 331 control speed ratios; Speed ratio is regulated the rotating ratio that motor 332 changes between applicator roll 13 and the back flow roll 12; And then change the amount of transferring to the base material spreading mass that back flow roll 12 drawn from applicator roll 13, thereby change the centre plane density of coating.During slit height between control applicator roll 13 and the scraper 15; Programmable logic controller (PLC) 31 is regulated motor 342 via motor driver 341 control scrapers; Scraper is regulated the slit height that motor 342 changes between applicator roll 13 and the scraper 15; And then change the amount of transferring to the base material spreading mass that back flow roll 12 drawn from applicator roll 13, thus change the even situation of coat side density unevenness on the pole piece width, guarantee the surface density uniformity of whole breadth on the pole piece.
With respect to prior art, non-contact measurement of the present invention brings the rate of good quality rate can reduce material loss, reduces production costs; Online in real time is measured and FEEDBACK CONTROL; Significantly improve the coating uniformity, narrow the battery capacity distribution, improved the capacity of the battery of given volume; Also can reduce the capacity surplus of battery design and then reduce cost of material, also can reduce because of the unbalance risk that causes safety problem of positive/negative plate energy; Simultaneously, online in real time is measured and FEEDBACK CONTROL also can reduce the cancel closedown time, enhances productivity, and can reduce production costs equally; In addition, online in real time is measured also can provide creation data to review, and assists quality control.
According to the announcement and the instruction of above-mentioned specification, those skilled in the art in the invention can also change and revise above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this specification, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (10)
1. apparatus for coating; It is characterized in that: comprise coater unit (1), measuring unit (2), feedback control unit (3) and rolling unit (4); Coater unit (1) is connected with measuring unit (2); One end of feedback control unit (3) connects measuring unit (2), gives coater unit (1) with measuring unit (2) gained signal feedback.
2. apparatus for coating according to claim 1 is characterized in that: said coater unit (1) comprises applicator roll (13), the coming hopper (14), be positioned at the scraper (15) of said applicator roll (13) top and be used to toast the baking tunnel (16) that is coated with the back base material for applicator roll (13) supplies slurry of the unwinding device (11) that is used to draw blank base material, the back flow roll (12) that is positioned at said unwinding device (11) downstream and said back flow roll (12) coupling.
3. apparatus for coating according to claim 1 is characterized in that: said measuring unit (2) comprise noncontact surface density measuring instrument (21) and be used for data acquisition and analysis and Control computer (22), the two electrical connection.
4. apparatus for coating according to claim 3 is characterized in that: comprise beta-ray radiator (211), ionisation chamber sensor (212), reciprocating mechanism (213) and intelligent processor (214) in the said surface density measuring instrument (21).
5. apparatus for coating according to claim 2 is characterized in that: said feedback control unit (3) comprises the gap measuring apparatus (32) in programmable logic controller (PLC) (31) and measurement scraper (15) that is connected respectively at said programmable logic controller (PLC) (31) and applicator roll (13) gap, the slack adjuster (34) that is used to regulate the speed ratio adjusting device (33) of back flow roll (12) and applicator roll (13) rotating ratio and is used to regulate scraper (15) and applicator roll (13) gap.
6. apparatus for coating according to claim 5 is characterized in that: said gap measuring apparatus (32) comprises the optical displacement sensor (321) that is connected with said programmable logic controller (PLC) (31).
7. apparatus for coating according to claim 5 is characterized in that: said speed ratio adjusting device (33) comprise the frequency converter (331) that links to each other with programmable logic controller (PLC) (31) and be connected in said frequency converter (331) and applicator roll (13) between speed ratio regulate motor (332).
8. apparatus for coating according to claim 5 is characterized in that: said slack adjuster (34) comprise the motor driver (341) that links to each other with programmable logic controller (PLC) (31) and be connected in said motor driver (341) and scraper (15) between scraper regulate motor (342).
9. apparatus for coating according to claim 1 is characterized in that: said computer (22) contains the software that a cover contains data communication and analyzing and processing function.
10. apparatus for coating according to claim 2 is characterized in that: said unwinding device (11), back flow roll (12), baking tunnel (16) are connected through driving belt (5) with wrap-up (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007913.7A CN102698921B (en) | 2012-01-12 | 2012-01-12 | A kind of apparatus for coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007913.7A CN102698921B (en) | 2012-01-12 | 2012-01-12 | A kind of apparatus for coating |
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| CN102698921A true CN102698921A (en) | 2012-10-03 |
| CN102698921B CN102698921B (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210007913.7A Active CN102698921B (en) | 2012-01-12 | 2012-01-12 | A kind of apparatus for coating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103008184A (en) * | 2013-01-11 | 2013-04-03 | 常州工学院 | Fully-automatic loading device for pole plate coating of lithium battery and adjustment method thereof |
| CN103909036A (en) * | 2013-01-09 | 2014-07-09 | 深圳市沃特玛电池有限公司 | Lithium ion power battery coater |
| CN111495678A (en) * | 2020-03-31 | 2020-08-07 | 合肥国轩高科动力能源有限公司 | Low-surface-density lithium ion battery pole piece coating device |
| CN112756217A (en) * | 2021-01-06 | 2021-05-07 | 上海韵量新能源科技有限公司 | Coating detection method, coating control method and detection system for fuel cell |
| CN115970971A (en) * | 2022-12-13 | 2023-04-18 | 重庆太蓝新能源有限公司 | Coating apparatus and coating method |
| WO2024044966A1 (en) * | 2022-08-30 | 2024-03-07 | 宁德时代新能源科技股份有限公司 | Electrode plate detection apparatus |
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| WO2001019534A1 (en) * | 1999-09-10 | 2001-03-22 | Tdk Corporation | Coating method |
| CN101883639A (en) * | 2007-12-10 | 2010-11-10 | 丰田自动车株式会社 | Coating apparatus and method of applying coating liquid |
| CN201644349U (en) * | 2010-03-19 | 2010-11-24 | 珠海光宇电池有限公司 | Automatic coated section length measuring device |
| CN102294878A (en) * | 2011-07-29 | 2011-12-28 | 邱会生 | Preparation device of lithium battery electrode material |
| CN202570511U (en) * | 2012-01-12 | 2012-12-05 | 宁德新能源科技有限公司 | Coating device |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2001019534A1 (en) * | 1999-09-10 | 2001-03-22 | Tdk Corporation | Coating method |
| CN101883639A (en) * | 2007-12-10 | 2010-11-10 | 丰田自动车株式会社 | Coating apparatus and method of applying coating liquid |
| CN201644349U (en) * | 2010-03-19 | 2010-11-24 | 珠海光宇电池有限公司 | Automatic coated section length measuring device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103909036A (en) * | 2013-01-09 | 2014-07-09 | 深圳市沃特玛电池有限公司 | Lithium ion power battery coater |
| CN103008184A (en) * | 2013-01-11 | 2013-04-03 | 常州工学院 | Fully-automatic loading device for pole plate coating of lithium battery and adjustment method thereof |
| CN111495678A (en) * | 2020-03-31 | 2020-08-07 | 合肥国轩高科动力能源有限公司 | Low-surface-density lithium ion battery pole piece coating device |
| CN112756217A (en) * | 2021-01-06 | 2021-05-07 | 上海韵量新能源科技有限公司 | Coating detection method, coating control method and detection system for fuel cell |
| WO2024044966A1 (en) * | 2022-08-30 | 2024-03-07 | 宁德时代新能源科技股份有限公司 | Electrode plate detection apparatus |
| CN115970971A (en) * | 2022-12-13 | 2023-04-18 | 重庆太蓝新能源有限公司 | Coating apparatus and coating method |
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| CN102698921B (en) | 2016-08-03 |
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Inventor after: Zhang Huaiyong Inventor after: Wang Shunkun Inventor after: Jia Baoan Inventor before: Zhang Huaiyong Inventor before: Wang Shengkun Inventor before: Jia Baoan |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG HUAIYONG WANG SHENGKUN JIA BAOAN TO: ZHANG HUAIYONG WANG SHUNKUN JIABAOAN |
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