CN1725529A - Preparation process and device for finished pole piece of secondary batter - Google Patents
Preparation process and device for finished pole piece of secondary batter Download PDFInfo
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- CN1725529A CN1725529A CNA2004100281209A CN200410028120A CN1725529A CN 1725529 A CN1725529 A CN 1725529A CN A2004100281209 A CNA2004100281209 A CN A2004100281209A CN 200410028120 A CN200410028120 A CN 200410028120A CN 1725529 A CN1725529 A CN 1725529A
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
This invention relates to a preparation technology and a device for secondary product pole plates including: A, designing baffle plate limiting slurries along the longitudinal of the roller and close to its surface, designing two against the front and back of the blank zone in the upper plate separately, besides, the rabbet of the slurry slot aims at other parts of the plate except the blank zone, B, selecting a collector foil a bit wider than or equal to the product plate, C, the collector foil is closely adhered to the surface of the coating roller with both sides aligning with the zones of the head and tail baffle plates to connect the head of the foil to the roll-collecting roller of a coating machine, D, turning on the coating machine and slurry slot to lead the foil bypass the roller to move ahead to be coated with the slurry continuously then to be driven and collected to get a foil coated on one side.
Description
[technical field]
The present invention relates to the secondary ion battery, more particularly, the present invention relates to the preparation and the device thereof of the finished product pole piece in a kind of secondary ion battery.
[background technology]
At present, be the secondary cell of the high-energy-density of representative with the lithium ion battery, becoming important requisite Power Supply fittings on the communication products such as mobile phone, mobile DVD, palmtop PC day by day.Lithium ion battery comprise to the shell body of being finalized the design and protecting, the core within the shell body is to be made of positive and negative electrode core body and electrolyte.And the positive and negative electrode core body comprise collector body, be coated on the collector body surface active material layer, be connected electrically in electrode pin on the reservation clear area of collector body and the barrier film between the positive and negative electrode core body etc., wherein, active material layer all has conclusive effect for the charge-discharge performance of secondary ion battery, power capacity etc.Therefore, in the production reality, active material layer must be coated on the collector body surface according to specification requirements such as the quality that designs, density, and will be according to the undersized pole piece of institute's splendid attire in the battery specifications and models formation battery container, also to reel and form the electrode core body, change into, flattening and seal through rubberizing, flattening, dress shell, cover plate, welded case, fluid injection then, finally make finished product electricity core these undersized pole pieces.
Therefore: this process engineering of undersized pole piece that be coated with active material layer on the collector body surface, forms institute's splendid attire in the battery container according to the battery specifications and models has important effect in the production process of secondary ion battery, be a very important ring in the production process of secondary ion battery.The prior art situation of relevant this technology is mainly as follows:
1. longitudinal divisions is coated with, cuts the rouleau method:
As Fig. 1, be depicted as the finished product pole piece layout on the collector body paper tinsel band under traditional longitudinal divisions rubbing method (wherein, double-head arrow is represented size, and single arrow is represented the direction of motion, down together).This method is passed through the decentralized system form slurry according to a certain percentage with various active raw materials, adopt the vertical coating process of fixed length segmentation, promptly (length is L to the coating layer size of stipulating according to battery finished product pole piece when coating, wide is W, because of general coating layer length L is the finished product pole piece total length overwhelming majority, Gu do not distinguish, down together), reserve the clear area in the sheet (if having, it is in coating layer head, the zone that the tail end head limits is with interior clear area) A1 length and sheet reserve the clear area outward and (be in coating layer head, edges of regions that the tail end head limits or clear area in addition) length, on collector body paper tinsel band A is vertical, carry out the segmentation coating, wherein n finished product pole piece width n * W covers width whole or most of of collector body paper tinsel band A, and the interior or sheet of n sheet is reserved the clear area outward and is connected to form a horizontal clear area perpendicular to collector body paper tinsel direction of belt travel (being length direction); In the coating process, clear area A1 in coating layer vertically reaches finished product pole piece fixed length L and sheet and when needing segmentation, applicator roll and back flow roll must periodically separate to allow to form horizontal clear area; The rolling of coating entire volume collector body paper tinsel band after the roll-in, is carried out roller to paper tinsel band A and is cut, and will roll up greatly and be cut into rouleau, is cut into the finished product pole piece with cutting knife again.Then the positive/negative plate collocation is reeled, adorned shell, fluid injection, changes into, make finished product electricity core.1. this method requires high to equipment performance, the apparatus processing required precision is very high, so that the equipment price costliness, is unfavorable for the reduction of product cost, adopts the monolithic roll-in to cutting rouleau for a long time, causes the pressure roller distortion easily;
2. longitudinal divisions is coated with, cuts large stretch of method:
Coating method is with 1. identical, and the mode of cutting is with 1. different: after the coating rolling by hand cutting knife will roll up greatly and laterally be cut into big section pole piece (promptly cut off), carry out cutting the finished product pole piece again into pieces after the roll-in; This kind cutting method system carries out roll-in to big section pole piece, can effectively enhance productivity, can avoid again simultaneously because the roll-in of long-time employing monolithic causes the roller distortion, 1. 2. this method be lower than mode to the requirement of coating apparatus, but still require equipment that preferable performance is arranged, still, the reverse side dimensional accuracy is not enough, adopt manual section again, efficient is lower;
3. laterally be coated with, scrape slurry continuously and cut mode
As Fig. 2, be depicted as the finished product pole piece layout on the collector body paper tinsel band under traditional transversal sectional rubbing method.This method coating is passed through the decentralized system form slurry according to a certain percentage with various active raw materials, according to the length L in the coating layer size of battery finished product pole piece regulation, choose the collector body paper tinsel band A that width was slightly larger than or equaled battery finished product pole piece total length L, adopt laterally coating continuously: do not adopt baffle plate when being coated with continuously, slurry covers whole paper tinsel band A width and does not take the length L and the inside and outside clear area of sheet of finished product pole piece into account; Or only use 2 baffle plates to be defined as product pole piece total length L and hold concurrently to reserve the outer clear area of sheet, slurry covers whole finished product pole piece total length L substantially and does not reserve clear area A1 length (if any) in the sheet of finished product pole piece.The coating of this method and the mode of cutting are all with 1. different: need be as not 1. in coating process fixed length ground folding applicator roll and back flow roll, thereby belong to along paper tinsel band A and vertically be coated with continuously; After paper tinsel band A vertically goes up the width W covering fully of N the finished product pole piece that is coated with continuously, adopt the fixed length mode of cutting that manual laterally being cut into of rolling pole piece is of a size of big section pole piece of L * mW (promptly cutting off) (wherein, N＞＞m, m ≈ n), as requested big section pole piece scraped slurry to form in the sheet or the outer clear area of sheet then, roller carries out roll-in after cutting small pieces again, makes the finished product pole piece.3. the manner adopts the laterally continuously mode of coating, thereby coating, cutting apparatus is required not high, and cost is lower, and carrying roller during coating (applicator roll) generally need not separate with back flow roll, can work continuously.But owing to do not adopt baffle plate or only use 2 baffle plates to be defined as product pole piece total length L, therefore can not form clear area A1 in the sheet simultaneously at coating sizing-agent according to finished product pole piece needs, and need scrape slurry afterwards, cause the waste of active material, production efficiency is low, and production cost rises, and owing to adopt manual the cut-out, usually can only the monolithic roll-in, efficient is very low, influences large-scale production.
Patented technology similar to the above, see application number and be 98101001.6 the disclosed a kind of apparatus and method of processing the device of battery winding body and transmitting the battery winding body of Chinese patent file, it has positive and negative electrode feed source, positive and negative electrode lead fuser, backing sheet material coiler device, positive and negative electrode cutting knife, spacer cutting knife and is installed in conveyer in shell.After the artificial placement of the winding up roller of positive and negative electrode sheet material was deposited in the positive and negative electrode feed source, this coiler device was processed the battery coiling body automatically.The combination of negative electrode feed source and back lining plate material coiler device, this backing sheet material coiler device are used at the backing sheet material of reeling on the backing sheet material winch spool with combination of negative electrode sheet material and uncoiling from the negative electrode winding up roller.Positive and negative electrode sheet material and spacer respectively high-speed winding become coiling body.It is said: this device structure is simple relatively, can be used at full speed with positive and negative electrode sheet material and spacer respectively, expeditiously, reposefully, accurately auto reeling becomes the battery winding body can not fluffing around body.And this equipment also can be installed in a plurality of battery winding bodies, make it be positioned at the orientation of requirement reliably, and with the high efficiency conveyer belt battery winding body is sent in the container, can accurately proofread and correct the axial hole of coiling body simultaneously, and the negative electrode lead of coiling body is positioned at predetermined position, angle reliably.And in fact, these apparatus and method are too complicated for China and price costliness too at present.
It is 98204215.9 Chinese patent file that similar above-mentioned patented technology also sees the patent No., a kind of manufacturing equipment of nickel-hydrogen battery negative pole is wherein disclosed, it mainly comprises paste applying device, rolling device, blanking apparatus and sorting unit and slurry band draw off gear, parts such as utmost point band draw off gear and electrical control cabinet constitute, it is said that this device is by the multiple devices coordination, under the centralized control of electrical control cabinet, finish a plurality of processing steps of nickel-hydrogen battery negative pole sheet serially, uniform in quality has overcome unit production and has caused the unsettled difficulty of negative plate quality.Because it has six kinds of operational modes, and is easy to operate, flexible, but continuous automatic production, and the pole piece of being produced especially is fit to automation battery assembly line to be used.But this apparatus structure is also quite complicated, and does not disclose the coating formation technical process of relevant finished product pole piece on collector body paper tinsel band.
Similarly also to see the patent No. be 96220758.6 Chinese patent file to patented technology, a kind of nickel-hydrogen battery negative pole solutioning machine is wherein disclosed, it is by putting tape spool, last guide roller, lower steering roll, turn to drum, drive pair roller, take-up spool, stock tank, the moving knife driver, governing box, drying box, the nickel-hydrogen battery negative pole solutioning machine that scraper and calibrator constitute, wherein go up guide roller and be positioned at top, stock tank left side, the stock tank bottom that You Ban Round inserted in lower steering roll was installed in, its the right is along vertically opposite with the cutter seam of scraper formation, the contactless thickness measuring instrument that is connected with the moving knife driver is installed between scraper cutter seam and the drying box, the air channel of external dry-heat air drying case, airduct, tuyere enters.It is said that this apparatus structure is reasonable, easy to operate, product surface is smooth, and thickness is even, is convenient to serialization, large-scale production.This apparatus structure is like uncomplicated, but the coating of finished product pole piece on collector body paper tinsel band forms technical process and quite cuts mode as aforesaid way laterally continuous coating, fixed length 3., therefore can not form blank simultaneously at coating sizing-agent according to finished product pole piece needs, and need scrape slurry afterwards, cause the waste of active material, production efficiency is low, and production cost rises, though coating efficiency still can, but cut off because following adopted is manual, usually can only the monolithic roll-in, efficient is very low, influences large-scale production.
[summary of the invention]
At the above-mentioned shortcoming of prior art, the technical purpose that the present invention will reach is will provide a kind of not need periodically folding applicator roll and back flow roll thereby can be coated with continuously and coating quality is stable, active coating layer dimensional uniformity is good, the preparation technology of the inefficient high secondary cell finished product pole piece of production cost.
Another technical purpose that the present invention will reach is the preparation facilities that the secondary cell finished product pole piece that a kind of coating quality is stable, equipment cost is low, production efficiency is high will be provided.
For this reason, one of technical scheme of the present invention is a kind of preparation technology of secondary cell finished product pole piece, described preparation technology adopts and the coating machine of back flow roll and applicator roll is housed and comprises following operating procedure: A) along described applicator roll vertically and be close to its surface the baffle plate that limits slurry be set, wherein, the head of corresponding described finished product pole piece total length, tail end at least respectively is provided with a baffle plate, before the interior pin of the corresponding described finished product pole piece last slice clear area, the rear end at least respectively is provided with a baffle plate, and makes the notch of slurry tank avoid the clear area that baffle plate limits and aim at remainder in the finished product pole piece total length that baffle plate limits; B) choose the collector body paper tinsel band that width was slightly larger than or equaled described finished product pole piece total length, C) make collector body paper tinsel band be close on the described applicator roll surface and the align interval of described initial and end end-stopping plate, both sides, this paper tinsel tape leader end is connected on the wind-up roll of coating machine; D) open coating machine and slurry tank, draw described collector body paper tinsel band and walk around applicator roll reach and coating sizing-agent on its one side continuously, oven dry, rolling obtain single face coated foils band then.At step B) in, do not get rid of and choose width and equal the slightly many collector body paper tinsel bands of finished product pole piece total length 2～3 integral multiples, vertically repeat to be provided with regularly under the baffle plate situation along applicator roll, can realize the purpose and the advantage of technology of the present invention fully.Traditional vertical coating method, adopt coating machine to collector body paper tinsel band coating process in, periodically folding applicator roll and back flow roll are with the inside and outside horizontal clear area of the sheet of reserving the connection electrode pin, and the periodically folding of obvious applicator roll and back flow roll easily causes the instability of coating machine, external or high-grade type can solve the problem of bringing thus, but the cost of this kind equipment, price can be in any more, and domestic at the early-stage or middle-size and small-size manufacturing enterprise is difficult to bear to it.And at present, domestic main flow coating machine because the technical merit problem is adopting under traditional vertical coating method situation, can not be guaranteed the weight of coating sizing-agent and the consistency of size.Method of the present invention is at the problems referred to above of traditional vertical coating method, laterally continuous technological process for coating has been proposed promptly: by the qualification baffle plate that is provided with on the applicator roll, mark off the specific length of battery finished product pole piece and interior clear area length thereof, choose that width is slightly larger than or the collector body paper tinsel band that equals described finished product pole piece total length is aimed at different dividing regions on the applicator roll, thereby can realize the continuous coating on the collector body paper tinsel bandwidth direction (promptly horizontal), reserve the clear area in the sheet of a plurality of finished product pole pieces in the coating process continuously and promptly be connected to form a vertical clear area that is parallel to collector body paper tinsel direction of belt travel (being length direction).Because in the continuous coating process of process of the present invention, applicator roll needn't separate under normal operation with back flow roll, the stability of coating machine and applicator roll increases greatly, so that the not high domestic main flow equipment of script precision, can be coated with out the obviously active slurry layer of improvement of weight, thickness, dimensional uniformity on collector body paper tinsel band, coating precision and product quality obviously improve.On the Technological Economy angle, technology of the present invention can adopt the obvious lower device fabrication of cost to go out quality and the very high product of precision, thereby has superior technical and economic performance.And, traditional relatively laterally continuous coating process mode, technology of the present invention adopts polylith baffle plate or baffle combination according to reserving the clear area shape in finished product pole piece size and the sheet, strict control hopper exit position, coating direction, coating size, avoided being coated with slurry in advance excessively and scraped the slurry operation afterwards, further save production cost, improved production efficiency.
For making slurry coating more accurate, described steps A) the notch place that also is included in described slurry tank is provided with corresponding baffle plate; In described steps A) in, each piece baffle plate is set makes it side by side parallel each other.
For further implementing above-mentioned principal advantages of the present invention, the present invention takes following concrete corrective measure: described step D) also comprise: before opening coating machine and being coated with, the painting parameter of setting coating machine according to finished product pole piece specification comprises distance between the coating speed ratio of coating speed, bake out temperature, the relative back flow roll of applicator roll and scraper and the applicator roll.In order to control coating layer thickness, also can adopt instrument dynamic monitoring in thousand fens to adjust coating layer thickness.
For making whole operations of making final battery finished product pole piece all realize automation, technology of the present invention also adopts the roller cutter, and further propose as follows: E) to the another side repeating step C of gained single face coated foils band through improved subsequent handling), D), obtain double spread paper tinsel band after the rolling; F), obtain big section pole piece according to the double spread paper tinsel band of the 4-15 integral multiple size transversely cutting gained of finished product pole piece width; G) big section pole piece of gained carried out roll-in, utilize described roller cutter to cut big section pole piece then, obtain the finished product pole piece according to finished product pole piece width roller.Domestic traditional pole piece is cut, or adopts manual the cut-out, so that it is too low to cut efficient; Or adopt and do the monolithic roll-in to cutting rouleau, cause the pressure roller distortion easily; The problems referred to above that technology of the present invention is cut at traditional pole piece, employing cuts out the process that big section pole piece, big section pole piece of roll-in cut out battery finished product pole piece again, as long as between traditional coating machine and roller cutter, introduce a cutting machine again, the double spread paper tinsel band that coating is obtained is cut into big section pole piece, carry out the roll-in of big section pole piece then efficiently, to send the roller cutter to cut through big section pole piece of roll-in again, the mechanical automation degree improves greatly, the integral production efficiency improvement.
Cut automation and cut efficient for implementing, in described step F) in, described transversely cutting is automatically to repeat; The length of described big section pole piece is 4～10 integral multiples of described finished product pole piece width, the width of big section pole piece can be preferably 6～8 times of finished product pole piece width, if in conjunction with special installation and product situation, the length that also can make big section pole piece is 2～16 integral multiples of described finished product pole piece width; The width of described big section pole piece equals described finished product pole piece total length; Certainly, the length of big section pole piece also can equal 2～3 integral multiples of described finished product pole piece width; Described finished product pole piece comprises anodal finished product pole piece and negative pole finished product pole piece.
Cut automation and precision for practicable and raising, described preparation technology has also adopted cutting machine, and described cutting machine comprises support, carry-over pinch rolls and transport tape, infrared inductor, cutting knife; Described step F) the transversely cutting process in comprises following operation: described carry-over pinch rolls and transport tape draw described double spread paper tinsel band reach, the forward pitch of the monitoring of described infrared inductor, the described double spread paper tinsel band of control from, described cutting knife becomes big section pole piece according to the distance of setting of passing through with described double spread paper tinsel band transversely cutting.
Correspondingly, two of technical scheme of the present invention is preparation facilitiess of a kind of secondary cell finished product pole piece, this preparation facilities comprise coating machine that back flow roll and applicator roll are housed and along described applicator roll vertically and the surface of being close to applicator roll be provided with the baffle plate that limits slurry; Reserve the clear area in the N silver of corresponding finished product pole piece, described baffle plate adds up to 2 * (N+1) pieces, wherein, the initial and end end of corresponding finished product pole piece total length respectively is provided with a baffle plate, the front and back ends of reserving the clear area in the corresponding finished product pole piece last slice respectively is provided with a baffle plate, and the notch of slurry tank is avoided the clear area of described baffle plate qualification and is aimed at the remainder of the total length of baffle plate qualification.Adopt apparatus for coating of the present invention, in coating process, pole piece length and width degree size and design load deviation are no more than 1mm.
More accurate for the slurry coating that makes apparatus of the present invention, the notch place of described slurry tank also is provided with baffle plate; Described baffle plate is a tabular, and each piece baffle plane is all hung down and placed the longitudinal axis of described applicator roll, and described baffle plate lower end has the shape that matches with described applicator roll surface curvature; Described baffle plate is parallel being arranged side by side each other.
For being coated with more accurately and being convenient to the automatic gravity of unnecessary slurry, reclaims in the slurry that makes apparatus of the present invention, the notch of described slurry tank is aimed at the bottom of described applicator roll and is in the upstream that applicator roll turns to, described baffle plate is arranged on the upper surface of described applicator roll and is in the middle reaches that applicator roll turns to, and described collector body paper tinsel band is stretched in the described applicator roll on the lower surface and is in the downstream that applicator roll turns to.
Cut automation and precision for what further improve apparatus of the present invention, described pole piece preparation facilities also comprises roller cutter and cutting machine, and described cutting machine comprises the infrared inductor that passes through distance and the controlled cutting knife that carries out transversely cutting of the carry-over pinch rolls of support, traction and conveying double spread paper tinsel band and transport tape, monitoring double spread paper tinsel band.Adopt cutting machine of the present invention to cut off, can turn round the unmanned state in the process, improved production efficiency greatly, its precision is higher simultaneously, and deviation can not surpass 0.5mm.
In a word, technology of the present invention and device improve have be easy to implement, advantage effective, with low cost.
Below, with accompanying drawing technical solution of the present invention is described further in conjunction with specific embodiments.
[description of drawings]
Fig. 1 is the schematic diagram of traditional longitudinal divisions rubbing method layout finished product pole piece on collector body paper tinsel band.
Fig. 2 is the schematic diagram of the laterally continuous rubbing method layout finished product pole piece on collector body paper tinsel band of tradition.
Fig. 3 is the schematic diagram of coating machine structure of the present invention and rubbing method layout finished product pole piece on collector body paper tinsel band
Fig. 4 is the schematic top plan view of Fig. 1.
Fig. 5 is the schematic diagram of cutting machine structure of the present invention and cutting-off process.
[embodiment]
Embodiment 1
As Fig. 3,4, be depicted as the coating machine structure (wherein, double-head arrow is represented size, and single arrow is represented the direction of motion) among a kind of preparation facilities embodiment of secondary cell finished product pole piece, the length and width of finished product pole piece are: L * W.This coating machine 1 comprises slurry tank 11, back flow roll 12, applicator roll 13, let off roll 15, wind-up roll 16, drying tunnel 17, program control panel (not quite clear showing).The collector body paper tinsel band A of rolling is housed on the let off roll 15 on it, and along described applicator roll 13 vertically and the surface of being close to applicator roll 13 be provided with the baffle plate 14 that limits slurry; Reserve clear area A1 in 1 silver of corresponding finished product pole piece and be provided with 2 baffle plates 141,142, the initial and end end of corresponding finished product pole piece total length L respectively is provided with a baffle plate 143,144, and the notch of slurry tank 11 is avoided the clear area A1 of baffle plate 141,142 qualifications and is aimed at the remainder of the total length of baffle plate 143,144 qualifications.
The notch place of slurry tank 11 also is provided with baffle plate (not quite clear showing); Baffle plate `141,142,143,144 is the tabular that the good TPO material of sealing is made, each piece baffle plane is all hung down and is placed the longitudinal axis of applicator roll 13, baffle plate 141,142,143,144 lower ends have the arcuate shape that matches with applicator roll 13 surface curvatures and are parallel to each other and are arranged side by side, its effect is to prevent that slurry to other side infiltration, guaranteeing the accurate of coating size.
The notch of slurry tank 11 is aimed at the bottom of applicator roll 13 and is in the upstream that applicator roll 13 turns to, baffle plate 141,142,143,144 is arranged on the upper surface of applicator roll 13 and is in the middle reaches that applicator roll 13 turns to, and collector body paper tinsel band A is stretched in the applicator roll 13 on the lower surface and is in the downstream that applicator roll 13 turns to.
As Fig. 5, be depicted as roller cutter (not quite clear showing) and cutting machine 2 structures among the preparation facilities embodiment of secondary cell finished product pole piece of the present invention.Cutting machine 2 comprises support (not quite clear showing), send winding up roller 20, traction and carry the carry-over pinch rolls 21 of double spread paper tinsel band A and infrared probe that passes through distance 23 and the controlled cutting knife 24 that carries out transversely cutting of transport tape 22, monitoring double spread paper tinsel band A.
Embodiment 2
Ginseng Fig. 3,4,5, the process implementing example step of the anode of secondary battery finished product pole piece of the preparation facilities production 063450AR model of the secondary cell finished product pole piece among the employing embodiment 1 is as follows:
1. slurrying: various raw material such as LiCoO2 and V7, PVDF are mixed, use homogenizer to disperse to make anode sizing agent, its slurry viscosity can be regulated by adding NMP, makes the required anode sizing agent of coating;
2. coating: adopts laterally continuously coating process of the present invention, coating 063450AR model positive pole finished product pole piece: (L * W) is 50cm * 4.3cm to length and width.At first axially go up the appropriate location 4 baffle plates are set: clear area baffle plate 141,142, two ends baffle plate 143,144 along applicator roll 13; The position of controllable register reaches the dimensions length of 063450AR and leaves some space district A1; Selecting the width collector body paper tinsel band-model identical with finished product pole piece total length 50cm for use is 50cm aluminium foil A, its A is placed on the wind-up roll 16, control panel is set, concrete parameter is provided with as follows: coating speed: 5 meters/minute, speed ratio: 1.2: 1, gap according to scraper and applicator roll 13 in the coating density adjustment slurry tank 11 of this model, start coating then, re-use amesdial and regulate coating layer thickness, according to required size fine setting baffle plate 14 positions, aluminium foil A is between applicator roll 13 and the back flow roll 12, by the frictional force between applicator roll 13 and the back flow roll 12, aluminium foil A is coated with all slurries of going up on the applicator roll 13, and by wind-up roll 16 traction process drying tunnel 17, at high temperature solvent evaporates in the slurry, obtain dry coated foils band A, by wind-up roll 16 rolling coated foils band A.In coating process, pole piece size and design load deviation are no more than 1mm.In particular cases non-, do not need to separate between applicator roll 13 and the back flow roll 12.Coated foils band A positive and negative all are coated with finishes, and when the paper tinsel roll coil of strip A diameter on the wind-up roll reaches the 50cm left and right sides, can unload double spread paper tinsel roll coil of strip A.
3. cut: double spread paper tinsel roll coil of strip A is loaded in cutting machine send on the winding up roller 20, it is middle that paper tinsel roll coil of strip A front is placed on two carry-over pinch rolls 21, and set screw clamps two carry-over pinch rolls 21, so that rely on friction to drive paper tinsel roll coil of strip A.8 times of length that is required cut-outs for big section pole piece B that are specified to product pole piece width are of a size of: 8 * 4.3cm=34.4cm, infrared probe 23 is fixed on the place that 34.4cm is arranged from cutting knife 24, and infrared probe 23 is the cut-out size of big section pole piece B apart from the distance of cutting knife 24.Start carry-over pinch rolls and infrared probe, the distance of interior double spread paper tinsel roll coil of strip A process just in time is the size of required cut-out during this period of time, and this moment, cutting knife 24 just can fall automatically, go up behind the horse then and rise, infrared probe is monitored again, through same time and distance, cutting knife 24 falls once more, so analogizes.With this big section pole piece B hydraulic press roll-in, pressure is 200PaSi then, and pole piece thickness is 130 μ m, uses the roller cutter roller of 8 * 4.3cm to cut big section pole piece B again, obtains the anodal finished product pole piece of final 063450AR (50cm * 4.3cm).
Embodiment 3
Still join Fig. 3,4,5, the secondary battery negative pole finished product pole piece of the preparation facilities production 063450AR model of the secondary cell finished product pole piece among the employing embodiment 1 and the step of subsequent technique embodiment thereof are as follows:
1. slurrying: use homogenizer to make cathode size;
2. coating: still adopt laterally continuously coating process coating 063450AR model negative pole finished product pole piece of the present invention: (L * W) is 45.3cm * 4.4cm to length and width.Because of the outer clear area of sheet being stayed the lower end of applying area, along applicator roll 13 enough the and cancellation clear area baffle plate 141,142 (mapping in addition) of 2 two ends baffle plates 143,144 only is set on axially, the position of controllable register 143,144 reaches the negative pole finished product pole piece overall length of 063450AR; Select the width collector body paper tinsel band identical with negative pole finished product pole piece total length (model is 45.3cm Copper Foil A) for use, its A is placed on the wind-up roll 16, it is similar with the anodal finished product pole piece of coating that other technological operations such as control panel are set.
3. cut: double spread paper tinsel roll coil of strip A is loaded in cutting machine send on the winding up roller 20,8 times of length that is required cut-outs for big section pole piece B determining negative pole finished product pole piece width are of a size of: 8 * 4.4cm=35.2cm, infrared probe 23 is fixed on the place that 35.2cm is arranged from cutting knife 24, the anodal finished product pole piece of the similar coating of other technological operations obtains final 063450Ar negative pole finished product pole piece (45.3cm * 4.4cm).
4. reel and assemble: get the identical 063450AR negative pole finished product pole piece of specification and match by barrier film and above anodal finished product pole piece, use 2.6cm volume pin to reel, 2Mpa pressure flattens, and carries out rubberizing, dress shell then, cover plate and housing solder up are good, change the fluid injection baking oven over to and dry.
5. fluid injection changes into: to carrying out fluid injection behind the electric core oven dry 10h that assembles, different electric core models adopt different electric liquid measures.Electricity core reservoir quantity is 3.4g, leaves standstill 16h, and Over-The-Counter uses the low current charge opening to change into then, and parameter is 100mA*6.5h, after a period of time down cabinet flatten, with steel ball liquid injection hole is sealed, make long wide height be 06 * 34 * 50cm
3063450AR finished product battery.
Claims (10)
1, a kind of preparation technology of secondary cell finished product pole piece, this preparation technology adopts the coating machine that back flow roll and applicator roll are housed, described preparation technology comprises following operating procedure: A) along described applicator roll vertically and be close to its surface the baffle plate that limits slurry be set, wherein, the head of corresponding described finished product pole piece total length, tail end at least respectively is provided with a baffle plate, before the interior pin of the corresponding described finished product pole piece last slice clear area, the rear end at least respectively is provided with a baffle plate, and makes the notch of slurry tank avoid the clear area that baffle plate limits and aim at remainder in the finished product pole piece total length that baffle plate limits; B) choose the collector body paper tinsel band that width was slightly larger than or equaled described finished product pole piece total length, C) make collector body paper tinsel band be close on the described applicator roll surface and the align interval of described initial and end end-stopping plate, both sides, this paper tinsel tape leader end is connected on the wind-up roll of coating machine; D) open coating machine and slurry tank, draw described collector body paper tinsel band and walk around applicator roll reach and coating sizing-agent on its one side continuously, oven dry, rolling obtain single face coated foils band then.
2, the preparation technology of secondary cell finished product pole piece as claimed in claim 1, it is characterized in that: described preparation technology also adopts the roller cutter, described preparation technology also comprises following operating procedure: E) to the another side repeating step C of gained single face coated foils band), D), obtain double spread paper tinsel band after the rolling; F), obtain big section pole piece according to the double spread paper tinsel band of the 4-15 integral multiple size transversely cutting gained of finished product pole piece width; G) big section pole piece of gained carried out roll-in, utilize described roller cutter to cut big section pole piece then, obtain the finished product pole piece according to finished product pole piece width roller.
3, the preparation technology of secondary cell finished product pole piece as claimed in claim 1 or 2, it is characterized in that: the notch place that described steps A) also is included in described slurry tank is provided with corresponding baffle plate, in described steps A) in, each piece baffle plate is set makes it side by side parallel each other.
4, the preparation technology of secondary cell finished product pole piece as claimed in claim 3 is characterized in that: described step B), described collector body paper tinsel bandwidth is equal to or greater than described finished product pole piece total length 1～3 integral multiple; Described step D) also comprise: before opening coating machine and being coated with, the painting parameter of setting coating machine according to finished product pole piece specification comprises distance between the coating speed ratio of coating speed, bake out temperature, the relative back flow roll of applicator roll and scraper and the applicator roll.
5, the preparation technology of secondary cell finished product pole piece as claimed in claim 3 is characterized in that: in described step F) in, described transversely cutting is automatically to repeat; The length of described big section pole piece is 4～10 integral multiples of described finished product pole piece width, and the width of described big section pole piece equals described finished product pole piece total length.
6, the preparation technology of secondary cell finished product pole piece as claimed in claim 3 is characterized in that: described finished product pole piece comprises anodal finished product pole piece and negative pole finished product pole piece; Described preparation technology has also adopted cutting machine, and described cutting machine comprises support, carry-over pinch rolls and transport tape, infrared inductor, cutting knife; Described step F) the transversely cutting process in comprises following operation: described carry-over pinch rolls and transport tape draw described double spread paper tinsel band reach, the forward pitch of the monitoring of described infrared inductor, the described double spread paper tinsel band of control from, described cutting knife becomes big section pole piece according to the distance of setting of passing through with described double spread paper tinsel band transversely cutting.
7, a kind of secondary cell finished product pole piece preparation facilities, this preparation facilities comprises the coating machine that back flow roll and applicator roll are housed, and it is characterized in that: along described applicator roll vertically and the surface of being close to applicator roll be provided with the baffle plate that limits slurry; Reserve the clear area in the N silver of corresponding finished product pole piece, described baffle plate adds up to 2 * (N+1) pieces, wherein, the initial and end end of corresponding finished product pole piece total length respectively is provided with a baffle plate, the front and back ends of reserving the clear area in the corresponding finished product pole piece last slice respectively is provided with a baffle plate, and the notch of slurry tank is avoided the clear area of described baffle plate qualification and is aimed at the remainder of the total length of baffle plate qualification.
8, secondary cell finished product pole piece preparation facilities as claimed in claim 7, it is characterized in that: the notch place of described slurry tank also is provided with baffle plate; Described baffle plate is a tabular, and each piece baffle plane is all hung down and placed the longitudinal axis of described applicator roll, and described baffle plate lower end has the shape that matches with described applicator roll surface curvature; Described baffle plate is parallel being arranged side by side each other.
9, as claim 7 or 8 described secondary cell finished product pole piece preparation facilitiess, it is characterized in that: the notch of described slurry tank is aimed at the bottom of described applicator roll and is in the upstream that applicator roll turns to, described baffle plate is arranged on the upper surface of described applicator roll and is in the middle reaches that applicator roll turns to, and described collector body paper tinsel band is stretched in the described applicator roll on the lower surface and is in the downstream that applicator roll turns to.
10, as claim 7 or 8 described secondary cell finished product pole piece preparation facilitiess, it is characterized in that: described pole piece preparation facilities also comprises roller cutter and cutting machine, and described cutting machine comprises the infrared inductor that passes through distance and the controlled cutting knife that carries out transversely cutting of the carry-over pinch rolls of support, traction and conveying double spread paper tinsel band and transport tape, monitoring double spread paper tinsel band.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100281209A CN100418250C (en) | 2004-07-19 | 2004-07-19 | Preparation process and device for finished pole piece of secondary batter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100281209A CN100418250C (en) | 2004-07-19 | 2004-07-19 | Preparation process and device for finished pole piece of secondary batter |
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| Publication Number | Publication Date |
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| CN1725529A true CN1725529A (en) | 2006-01-25 |
| CN100418250C CN100418250C (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100281209A Expired - Fee Related CN100418250C (en) | 2004-07-19 | 2004-07-19 | Preparation process and device for finished pole piece of secondary batter |
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| CN (1) | CN100418250C (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100442575C (en) * | 2005-06-30 | 2008-12-10 | 深圳市比克电池有限公司 | Lithium ion battery pole piece coating method and coating machine |
| CN101075669B (en) * | 2006-05-18 | 2010-06-16 | 比亚迪股份有限公司 | Formed smear device for zinc air cell anode and its production |
| CN102427145A (en) * | 2011-12-05 | 2012-04-25 | 深圳市中星动力电池技术有限公司 | Preparation system for multi-element nano vanadium power battery |
| CN103017496A (en) * | 2011-09-22 | 2013-04-03 | 宜春青山能源有限公司 | Drying device and method of lithium-ion power battery pole piece |
| CN104124472A (en) * | 2013-04-26 | 2014-10-29 | 明冠能源(江西)有限公司 | Double-face coating and single-time compounding preparation method of power lithium battery plastic-aluminum membrane |
| CN111952533A (en) * | 2020-07-29 | 2020-11-17 | 江西省倍特力新能源有限责任公司 | Manufacturing device for negative electrode of power type battery |
| CN112599725A (en) * | 2020-12-23 | 2021-04-02 | 深圳赛骄阳能源科技股份有限公司 | Method for improving rolling efficiency of lithium ion battery pole piece |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3754195A (en) * | 1994-10-27 | 1996-05-23 | Fuji Photo Film Co., Ltd. | Nonaqueous secondary cell and its manufacturing method |
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2004
- 2004-07-19 CN CNB2004100281209A patent/CN100418250C/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100442575C (en) * | 2005-06-30 | 2008-12-10 | 深圳市比克电池有限公司 | Lithium ion battery pole piece coating method and coating machine |
| CN101075669B (en) * | 2006-05-18 | 2010-06-16 | 比亚迪股份有限公司 | Formed smear device for zinc air cell anode and its production |
| CN103017496A (en) * | 2011-09-22 | 2013-04-03 | 宜春青山能源有限公司 | Drying device and method of lithium-ion power battery pole piece |
| CN103017496B (en) * | 2011-09-22 | 2016-01-13 | 北京奥思源科技有限公司 | Lithium ion power cell pole flakes drying device and method |
| CN102427145A (en) * | 2011-12-05 | 2012-04-25 | 深圳市中星动力电池技术有限公司 | Preparation system for multi-element nano vanadium power battery |
| CN104124472A (en) * | 2013-04-26 | 2014-10-29 | 明冠能源(江西)有限公司 | Double-face coating and single-time compounding preparation method of power lithium battery plastic-aluminum membrane |
| CN104124472B (en) * | 2013-04-26 | 2016-06-01 | 明冠新材料股份有限公司 | A kind of dynamic lithium battery aluminum plastic film double spread list time composite preparation process |
| CN111952533A (en) * | 2020-07-29 | 2020-11-17 | 江西省倍特力新能源有限责任公司 | Manufacturing device for negative electrode of power type battery |
| CN111952533B (en) * | 2020-07-29 | 2023-01-10 | 江西省倍特力新能源有限责任公司 | Manufacturing device for negative electrode of power type battery |
| CN112599725A (en) * | 2020-12-23 | 2021-04-02 | 深圳赛骄阳能源科技股份有限公司 | Method for improving rolling efficiency of lithium ion battery pole piece |
| CN112599725B (en) * | 2020-12-23 | 2022-03-25 | 深圳赛骄阳能源科技股份有限公司 | Method for improving rolling efficiency of lithium ion battery pole piece |
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|---|---|
| CN100418250C (en) | 2008-09-10 |
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