CN102181894B - Device and method for carrying out single spraying on power battery case - Google Patents
Device and method for carrying out single spraying on power battery case Download PDFInfo
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- CN102181894B CN102181894B CN2011100845305A CN201110084530A CN102181894B CN 102181894 B CN102181894 B CN 102181894B CN 2011100845305 A CN2011100845305 A CN 2011100845305A CN 201110084530 A CN201110084530 A CN 201110084530A CN 102181894 B CN102181894 B CN 102181894B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a device and method for carrying out single spraying on a power battery case. The device comprises a PLC (programmable logic controller), a first mechanical arm for clamping a battery case which is not sprayed, a second mechanical arm for clamping a sprayed battery case, a spraying tank, a spraying solution mother tank and a mechanical pump, wherein a spray pipe communicated with bulges inside a hollow wall is arranged in the spraying tank; and the inner surface of the spraying tank and the surface of the spray pipe are provided with a plurality of spray orifices for spraying the spraying solution. The battery cases are electroplated one by one by spraying. The method has the following beneficial effects: the battery case plating prepared by the method has smooth surface; the plating on the inner and outer surfaces has uniform thickness; the corrosion resistance is improved; and the consistency among the battery cases is enhanced.
Description
Technical field
The present invention relates to a kind of power cell capsomere coating apparatus and method, particularly a kind of power cell capsomere coating apparatus and method of cylindrical power cell shell plated metal film.
Background technology
Since the seventies in 20th century, owing to showing especially of petroleum resources and environmental problem, automotive industry is devoted to develop clean energy technology, adopts high specific energy secondary cell to receive attention as the electromobile of power source.Modern electro electrical automobile cleanliness without any pollution, the variation of energy efficiency height and the energy, simple in structure, keep in repair easy to usely, be the important new green environment protection vehicles of 21 century.
Lithium ion battery is the novel high-energy battery of succeeding in developing in 20th century.Because of it has advantages such as energy height, cell voltage is high, operating temperature range is wide, storage life is long, be widely used in the military and civilian compact electric apparatus, replaced conventional batteries like mobile telephone, portable computer, pick up camera, photographic camera etc., part.In recent ten years, under the support and promotion of national governments, the lithium-ion-power cell technology develops rapidly, has become the main developing direction of used for electric vehicle power cell.Lithium-ion-power cell is on probation in electromobile, will become one of major impetus power supply of 21 century electromobile, and will be applied aspect man-made satellite, aerospace and the energy storage.
With the electromobile is application target, and lithium-ion-power cell must further improve performance index, reduce cost, improves safety performance and work-ing life.Wherein the safety performance of power cell is the bottleneck of restricted power development of automobile.Around cost, safety performance and work-ing life, battery material, battery system design and The Research of Relevant Technology are extensively carried out.
Battery is made up of positive pole, negative pole, electrolytic solution, diaphragm paper and shell.At present, people are many to the research of positive pole, negative pole, electrolytic solution, diaphragm paper, and condition is comparative maturity also.And it is fewer to the concern of battery case.And the performance of battery case all has very large influence to memory property, corrosion resistance nature and the safety performance of power cell.The problem of most critical is blast protection and anti-leakage in the power cell, battery case thickness of coating and homogeneity, and whether the shell surfaces externally and internally has crackle then is the key of anti-blast of power cell and leakproof ability.And battery case accounts for about 1/3 of entire cell cost.Therefore, the research to the power cell shell is very necessary.
The preparation of property material for battery shell is that lithium dynamical battery prepares important step in the process, directly determines each item performance of lithium dynamical battery, is a very crucial technical indicator.Dynamic lithium battery need satisfy high current charge-discharge, repeatedly recycles, and therefore the corrosion resistance nature of its battery case is had higher requirement.At present; The whole world has been realized industrialization and the electromobile of going into operation; The overwhelming majority adopts cylindrical dynamic lithium battery (for example adopt a plurality of 18650 or the mode of 26650 cell series and parallels be assembled into series of cells); This cylindrical dynamic lithium battery requires will guarantee simultaneously that greater than more than the 1.5 μ m battery has good sealing property and overall corrosion resistance ability to the nickel coatings of its battery case endoporus.
Traditional secondary battery and alkaline primary battery shell production technique are to use mild-carbon steel strip at present, after the impact briquetting, use the mode plating layer of metal nickel of barrel nickel plating again, are used for antirust corrosion protection.Because battery case is the deep hole part; Cleaning difficulty in the barrel nickel plating process; The covering power and the covering power of nickel plating solution are limited, cause the became uneven of plating leakage of battery case endoporus and coating, make work-ing life of fraction defective height and battery of battery case lower; Can not satisfy the requirement of dynamic lithium battery, and barrel plating is bigger to the pollution of environment.
Also having a kind of comparatively mode of advanced battery case electronickelling is to take the mode of preplating; Promptly earlier with electroplating steel strip with nickel again stretching and punching become battery case; The advantage of this method is that serving is even in the battery case, plating leakage can not occur, is exactly that cracking appears in coating easily in the process of deep-draw but significant disadvantages is also arranged; Mechanical property and corrosion resistance nature variation can not satisfy the requirement of dynamic lithium battery.
Except that above-mentioned two kinds of conventional process, present high-end dynamic lithium battery shell also can adopt the method for carrying out barrel plating after the impact briquetting of preplating steel plate again, but that the weak point of this method is manufacturing cost is high, and can not effectively solve the homogeneity problem of coating.
To the preparation method of battery case, forefathers have also done many relevant researchs.Patent CN200910251294.4 has proposed to insert open tube at inside battery, and changes the thermal diffusivity of battery with the method for battery covers conducting, improves safety performance.Patent CN200720183467.X has proposed to adopt the mode of covers, and covers connects and sealing with a circle weld seam, prevents that outside moisture from getting into inside battery, improves safety performance.Patent CN200920260102.1 has proposed in battery container and/or outside surface coats the one-way heat conduction layer, changes thermal diffusivity, security.
Above-mentioned several kinds of battery case working methods are though certain function has been played in performance boost to battery case, to all not solving the problem of battery case surfaces externally and internally thickness of coating inequality and craze of coating.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art; Changed traditional method to the battery case batch machining; The present invention proposes the running of a kind of PLC of utilization unit control mechanical arm, battery case is carried out the monomer spraying plating, can satisfy the coating homogeneous in conjunction with the mode of spraying plating; Can guarantee that again coating does not ftracture, battery case integral body has the power cell capsomere coating apparatus and the method for excellent corrosion resisting performance.
In order to reach above-mentioned technical purpose; Technical scheme of the present invention is; A kind of power cell capsomere coating apparatus; Comprise the PLC unit, be used for clamping not the spraying plating battery case first mechanical arm, be used for clamping second mechanical arm, battery case arrangement place, coating bath and battery case collection place of spraying plating battery case; Arrangement place of described battery case, coating bath and battery case collection place are horizontal successively, and the output terminal of described PLC unit is electrically connected to the control end of first mechanical arm, second mechanical arm and coating bath, and described first mechanical arm can to-and-fro movement between battery case arrangement place and coating bath; Described second mechanical arm can to-and-fro movement between coating bath and battery case collection place, and first mechanical arm and second mechanical arm laterally arrange and keep mutual equidistance operation.
Described a kind of power cell capsomere coating apparatus; Described coating bath is the groove shape structure that is provided with hollow wall; Be provided with the jet pipe of the inner convexity of a connection hollow wall in the coating bath, the internal surface of coating bath and jet pipe surface are provided with a plurality of spray orifices that hollow wall inside is used to spray plating bath that are communicated to.
Described a kind of power cell capsomere coating apparatus; Described first mechanical arm comprises two gripping plates; Described two gripping plates are arranged in parallel and between two gripping plates, form grasping part; Wherein a gripping plate is provided with a projection, and another piece gripping plate is provided with two projections, and described three projections formed grasping part between two gripping plates is outstanding and gripping object formed the clamping of 3 contacts.
Described a kind of power cell capsomere coating apparatus has at least one to process for conductor in described two gripping plates, the described gripping plate of being processed by conductor connects the negative electrode of external power.
Described a kind of power cell capsomere coating apparatus is provided with one and connects external power anodic positive plate in the groove of described coating bath, plating bath connects the anode of external power through positive plate.
Described a kind of power cell capsomere coating apparatus; Also comprise female groove of plating bath and mechanical pump; The fluid inlet of the female groove of described plating bath is through in the groove of pipe connection to coating bath, the hollow wall of pipe connection to the coating bath of the liquid outlet of the female groove of plating bath through being provided with mechanical pump.
A kind of method that adopts said apparatus to carry out the spraying plating of power cell capsomere may further comprise the steps:
1. first mechanical arm is in battery case arrangement place top, and second mechanical arm is in the coating bath top;
2. the PLC unit is controlled first mechanical arm and second mechanical arm moves downward simultaneously; Reach the battery case position in battery case arrangement place to first mechanical arm; Second mechanical arm reaches the battery case position in the coating bath, and first mechanical arm and second mechanical arm draw in and clamp battery case;
3. after first mechanical arm and second mechanical arm move up to eminence simultaneously, move to first mechanical arm and second mechanical arm more simultaneously and lay respectively at coating bath and battery case collection place top;
4. first mechanical arm and second mechanical arm move downward simultaneously, and it is inner that jet pipe is inserted into the folded battery case of first mechanical arm in first manipulator motion to the coating bath, and the folded battery case of second manipulator motion to the second mechanical arm steadily is placed into battery case collection place;
5. start coating apparatus, battery case is carried out spraying plating;
6. first mechanical arm and second mechanical arm unclamp battery case, and first mechanical arm draws the clamping battery case in after moving down a bit of distance again, realizes changing a little and gives;
7. start coating apparatus, once more this battery case is carried out spraying plating;
8. first mechanical arm opens once more, after first mechanical arm and second mechanical arm move up to eminence earlier, moves to the 1. described position of step again;
9. repeat 1.-8. said action, then the battery case after the spraying plating will be admitted in battery case collection place in coating bath.Circulation successively again, then the spraying plating of battery case monomer has obtained lasting production.
Technique effect of the present invention is, different from the past battery case carried out the method for batch machining, battery case carried out monomer electroplate.Adopt the mode of inserting the conduit spraying plating in the battery case, solved the galvanized difficult problem of battery case blind hole in the battery case barrel plating process; Through the distribution of control plating bath projection velocity and spray orifice, can realize the homogeneous of battery case surfaces externally and internally metal plating; Change spraying plating time and current density, then can obtain the battery case that different thickness of coating require.And, the method for employing spraying plating, electroplating current density can reach 70-100Adm-2, and the nickel coatings that plates 2 μ m only needs 5.5-6.6s.Barrel plating then needs 3-4 hour.
Below in conjunction with accompanying drawing the present invention is described further.
Description of drawings
Fig. 1 is a monomer spraying plating synoptic diagram of the present invention;
Fig. 2 is a spraying plating circulation synoptic diagram of the present invention;
Fig. 3 is a structural representation of the present invention;
Fig. 4 gives electrical schematic for multiple spot of the present invention;
Fig. 5 is a mechanical arm structural representation of the present invention;
Wherein 1 is coating bath, and 2 is jet pipe, and 3 is spray orifice, and 4 is gripping plate, and 5 is projection, and 6 is the female groove of plating bath, and 7 is mechanical pump, and 8 is battery case.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5; Battery case 8 arrangements place, coating bath 1 and battery case 8 collections place are horizontal successively; The output terminal of PLC unit is electrically connected to the control end of first mechanical arm, second mechanical arm and coating bath 1; First mechanical arm can be in battery case 8 arrangements place and 1 to-and-fro movement of coating bath, and second mechanical arm can to-and-fro movement between coating bath 1 and battery case 8 collections place, and first mechanical arm and second mechanical arm laterally arrange and keep mutual equidistance operation.Coating bath 1 is provided with the jet pipe 2 of the inner convexity of a connection hollow wall for being provided with the groove shape structure of hollow wall in the coating bath 1, the internal surface of coating bath 1 and jet pipe 2 surfaces are provided with a plurality of spray orifices 3 that hollow wall inside is used to spray plating bath that are communicated to.First mechanical arm comprises having at least one to process for conductor in 4, two gripping plates 4 of two gripping plates, and the gripping plate of being processed by conductor 4 connects the negative electrode of external powers.Two gripping plates 4 are arranged in parallel and between two gripping plates 4, form grasping part; Wherein a gripping plate 4 is provided with a projection 5; It is outstanding and gripping object formed the clamping of 3 contacts that another piece gripping plate 4 is provided with 5, three projections 5 of two projections formed grasping part between two gripping plates 4.
The fluid inlet of the female groove 6 of plating bath is through in the groove of pipe connection to coating bath 1, the hollow wall of pipe connection to the coating bath 1 of the liquid outlet of the female groove 6 of plating bath through being provided with mechanical pump 7.
When electroplating work, battery case 8 is connected to the external source negative electrode as the conductor gripping plate 4 of plating piece through mechanical arm, and coating bath 1 internal surface and jet pipe 2 surfaces are provided with many spray orifices 3 respectively, and plating bath links to each other with the external source anode through metallic anode plate.When plating bath is ejected into 8 last times of battery case, the metallic cation of positively charged touches electronegative battery case 8, and metallic cation is reduced into atoms metal rapidly and is deposited on battery case 8 surfaces externally and internallies.
Plating bath in female groove is smoked through mechanical pump 7, gets in coating bath 1 hollow wall, is sprayed onto battery case 8 surfaces through the spray orifice 3 on cell wall and the jet pipe 2, and plating bath falls in the coating bath 1 immediately, and after conduit flows back in the middle of female groove, whole process plating bath does not have leakage.
Method of spray plating of the present invention can carry out spraying plating to battery case 8 surfaces externally and internallies, shell inner bottom part and corner location thereof; Realize battery case 8 surfaces externally and internally coating homogeneous, efficiently solve in the craze of coating problem that produces in the preplating method and the barrel plating method that coating shell inner bottom part is too thin, near the too thick problem aperture.Aperture coating is too thick, influences the welding property of battery case 8, causes the cell package degradation, easy-to-leak liquid and blast.
The method of spray plating current density can reach 70-100Adm-2, and according to the coating sedimentation mechanism, current density is big more, moment nucleation rate many more, coating crystal grain is thin more.Therefore, the metal plating compact structure that method of spray plating of the present invention makes, smooth surface, thereby corrosion resistance nature improves.Coating crystal grain is thin more, and coating hardness is high more, and battery case 8 scratch resistance performances improve.
Concrete operation steps has:
1. first mechanical arm is in battery case 8 arrangements place top, and second mechanical arm is in coating bath 1 top;
2. the PLC unit is controlled first mechanical arm and second mechanical arm moves downward simultaneously; Reach battery case 8 positions in battery case 8 arrangements place to first mechanical arm; Second mechanical arm reaches battery case 8 positions in the coating bath 1, and first mechanical arm and second mechanical arm draw in and clamp battery case 8;
3. after first mechanical arm and second mechanical arm move up to eminence simultaneously, move to first mechanical arm and second mechanical arm more simultaneously and lay respectively at coating bath 1 and battery case 8 collections place top;
4. first mechanical arm and second mechanical arm move downward simultaneously, and jet pipe 2 is inserted into the folded battery case of first mechanical arm 8 inside in first manipulator motion to the coating bath 1, and the folded battery case 8 of second manipulator motion to the second mechanical arm steadily is placed into battery case 8 collections place;
5. start coating apparatus, battery case 8 is carried out spraying plating;
6. first mechanical arm and second mechanical arm unclamp and draw clamping battery case 8 again in after battery case 8, the first mechanical arms move down a bit of distance, realize changing a little and give;
7. start coating apparatus, once more this battery case 8 is carried out spraying plating;
8. first mechanical arm opens once more, after first mechanical arm and second mechanical arm move up to eminence earlier, moves to the 1. described position of step again;
9. repeat 1.-8. said action, then the battery case after the spraying plating 8 will be admitted in battery case 8 collections place in coating bath 1.Circulation successively again, then battery case 8 monomer spraying platings have obtained lasting production.
Through the mode of motion of PLC control method combination mechanical arm, the robotization and the high accurancy and precision requirement of spraying plating process have been realized.Coating apparatus makes the spraying plating parameter have controllability and tolerance range height also by the control of PLC unit, and quality product is secure, high conformity.
6. step changes the mode of a little giving electricity, promptly through change anchor clamps and battery case 8 point of contact, and carries out spraying plating successively, as shown in Figure 4.When anchor clamps and battery case 8 point of contact carry out a spraying plating during in position shown in (a); Then, move anchor clamps to position shown in (b) and contact, carry out a spraying plating again with battery case 8.Anchor clamps and battery case 8 point of contact plating leakage problems guaranteed that coating is complete when spraying plating for the second time can remedy spraying plating for the first time.
Mechanical arm anchor clamps of the present invention are 3 contacts.The anchor clamps of mechanical arm are made up of one or two blocks of metallic conduction plates; Wherein two projections 5 are arranged like screw etc. on a metallic conduction plate; A projection 5 is arranged on another metallic conduction plate; The direction of stretching out of projection 5 is all stretched to formed grasping part between the gripping plate 4, and three projections 5 have promptly constituted three point of contact of anchor clamps folder battery case 8.When clamp battery case 8, three projections 5 are connected formation hexagonal angle each other with battery case 8 point of contact with battery case 8 centers of circle.It is more even that battery case 8 surface currents are distributed.
Apparatus of the present invention have been installed temperature controlling system and have been guaranteed that bath temperature is constant controlled.Transmitter is surveyed the temperature information of female groove plating bath, feeds back in the temperature control indicating meter and through reading to show; The size of automatic comparison solution actual temperature of temperature display control unit and preset value is come control heater work.If solution temperature is too high, then well heater quits work; If solution temperature is low excessively, then well heater heats.
Claims (5)
1. power cell capsomere coating apparatus; It is characterized in that; Comprise the PLC unit, be used for clamping not the spraying plating battery case first mechanical arm, be used for clamping second mechanical arm, battery case arrangement place, coating bath and battery case collection place of spraying plating battery case; Arrangement place of described battery case, coating bath and battery case collection place are horizontal successively; The output terminal of described PLC unit is electrically connected to the control end of first mechanical arm, second mechanical arm and coating bath; Described first mechanical arm can to-and-fro movement between battery case arrangement place and coating bath, and described second mechanical arm can to-and-fro movement between coating bath and battery case collection place, and first mechanical arm and second mechanical arm laterally arrange and keep mutual equidistance operation;
Described coating bath is the groove shape structure that is provided with hollow wall, is provided with the jet pipe of the inner convexity of a connection hollow wall in the coating bath, and the internal surface of coating bath and jet pipe surface are provided with a plurality of spray orifices that hollow wall inside is used to spray plating bath that are communicated to;
Described first mechanical arm comprises two gripping plates; Described two gripping plates are arranged in parallel and between two gripping plates, form grasping part; Wherein a gripping plate is provided with a projection; Another piece gripping plate is provided with two projections, and described three projections formed grasping part between two gripping plates is outstanding and gripping object formed the clamping of 3 contacts.
2. a kind of power cell capsomere coating apparatus according to claim 1 is characterized in that, has at least one to process for conductor in described two gripping plates, and the described gripping plate of being processed by conductor connects the negative electrode of external power.
3. a kind of power cell capsomere coating apparatus according to claim 1 is characterized in that, is provided with one in the groove of described coating bath and connects external power anodic positive plate, and plating bath connects the anode of external power through positive plate.
4. a kind of power cell capsomere coating apparatus according to claim 1; It is characterized in that; Also comprise female groove of plating bath and mechanical pump; The fluid inlet of the female groove of described plating bath is through in the groove of pipe connection to coating bath, the hollow wall of pipe connection to the coating bath of the liquid outlet of the female groove of plating bath through being provided with mechanical pump.
5. one kind is adopted the method that arbitrary device carries out the spraying plating of power cell capsomere among the aforesaid right requirement 1-4, it is characterized in that, may further comprise the steps:
1. first mechanical arm is in battery case arrangement place top, and second mechanical arm is in the coating bath top;
2. the PLC unit is controlled first mechanical arm and second mechanical arm moves downward simultaneously; Reach the battery case position in battery case arrangement place to first mechanical arm; Second mechanical arm reaches the battery case position in the coating bath, and first mechanical arm and second mechanical arm draw in and clamp battery case;
3. after first mechanical arm and second mechanical arm move up to eminence simultaneously, move to first mechanical arm and second mechanical arm more simultaneously and lay respectively at coating bath and battery case collection place top;
4. first mechanical arm and second mechanical arm move downward simultaneously, and it is inner that jet pipe is inserted into the folded battery case of first mechanical arm in first manipulator motion to the coating bath, and the folded battery case of second manipulator motion to the second mechanical arm steadily is placed into battery case collection place;
5. start coating apparatus, battery case is carried out spraying plating;
6. first mechanical arm and second mechanical arm unclamp battery case, and first mechanical arm draws the clamping battery case in after moving down a bit of distance again, realizes changing a little and gives;
7. start coating apparatus, once more this battery case is carried out spraying plating;
8. first mechanical arm opens once more, after first mechanical arm and second mechanical arm move up to eminence earlier, moves to the 1. described position of step again;
9. repeat 1.-8. said action, then the battery case after the spraying plating will be admitted in battery case collection place in coating bath, circulation successively again, and then the spraying plating of battery case monomer has obtained lasting production.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100845305A CN102181894B (en) | 2011-04-02 | 2011-04-02 | Device and method for carrying out single spraying on power battery case |
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| CN2011100845305A CN102181894B (en) | 2011-04-02 | 2011-04-02 | Device and method for carrying out single spraying on power battery case |
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| CN102181894B true CN102181894B (en) | 2012-07-11 |
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| CN105696031A (en) * | 2015-12-01 | 2016-06-22 | 江苏九天光电科技有限公司 | Method for manufacturing steel power lithium battery shell by using nickel pre-electroplated steel band |
| CN105543927B (en) * | 2015-12-23 | 2018-05-04 | 广东长盈精密技术有限公司 | anodic oxidation system |
| AU2018202147A1 (en) * | 2017-04-19 | 2018-11-29 | Johnson & Johnson Vision Care, Inc. | Flexible micro-battery |
| CN109592404A (en) * | 2019-01-23 | 2019-04-09 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of efficient handling equipment of electric energy meter and method |
| CN113291796B (en) * | 2021-05-08 | 2022-08-12 | 莆田市晟熠光电科技有限公司 | Feeding and discharging equipment and method for ball lens polishing detection |
| CN115488088B (en) * | 2022-09-15 | 2023-08-25 | 安徽中能电源有限公司 | Surface treatment device for recovered battery |
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| CN1138022C (en) * | 2000-01-28 | 2004-02-11 | 杨聚泰 | Equipment and technology for electroplating steel pipe inner wall by using auxiliary anode and spray-plating zinc solution |
| JP2006169608A (en) * | 2004-12-20 | 2006-06-29 | Nsk Ltd | Electrodeposition coating method for hub |
| SE529744C2 (en) * | 2005-12-22 | 2007-11-13 | Abb Technology Ag | Device and method of metallic coating and use of the device |
| CN202047154U (en) * | 2011-04-02 | 2011-11-23 | 潘俊安 | Monomer spray plating device for power battery housing |
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