CN1245593A - Manufacture method of lithium ion secondary battery - Google Patents
Manufacture method of lithium ion secondary battery Download PDFInfo
- Publication number
- CN1245593A CN1245593A CN97181712A CN97181712A CN1245593A CN 1245593 A CN1245593 A CN 1245593A CN 97181712 A CN97181712 A CN 97181712A CN 97181712 A CN97181712 A CN 97181712A CN 1245593 A CN1245593 A CN 1245593A
- Authority
- CN
- China
- Prior art keywords
- spacer
- rechargeable battery
- lithium rechargeable
- manufacture method
- adhering resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
The manufacture of a lithium ion secondary battery which can take optional form such as a thin type, is compact and highly efficient and has stable properties, being composed of a positive electrode, a negative electrode, a separator, and an electrolyte. In this manufacture, a battery laminate, which has layers of laminates each of which is made by laying a positive electrode and a negative electrode severally on a separator after applying the binder resin solution made by dissolving fluoric resin or polyvinyl alcohol in a solvent, to the separator is made, and a plate-shaped battery laminate is made by drying this battery laminate under pressure so as to evaporate the solvent, and then this plate-shaped battery laminate is impregnated with an electrolyte.
Description
Technical field
The present invention relates to the manufacture method of lithium rechargeable battery, say detailed point again, relating to can be with the manufacture method of arbitrary shape slimming, lightweight lithium rechargeable battery.
Background technology
For adapting with the miniaturization of portable electronic machine is lightweight, the raising of the power capacity in the battery has become most important problem, and people are carrying out the exploitation and the improvement of various battery always.In battery up to now, lithium rechargeable battery is the secondary cell that can expect high capacity, still energetically it is being improved now.Lithium rechargeable battery, as its main formation, the ion conductive layer that has positive pole, negative pole and by this positive pole and negative pole clamping.In the lithium rechargeable battery of present practicability, what ion conductive layer used is the conductive layer that is full of the porous film of polyethylene or polypropylene etc. with the solvent of the non-water system that contains lithium ion.
Now practicability lithium rechargeable battery, adopt the firm outer tinning of using stainless steel etc., and the way of pressurizeing is kept the electrical connection between positive pole-ion conductive layer-negative pole.But above-mentioned outer tinning has increased the weight of lithium rechargeable battery, makes miniaturization, when the lightweight difficulty that becomes is got up, because the outspoken nature of outer tinning, it is difficult that arbitrary shapeization has also become.Want to make lithium rechargeable battery miniaturization and lightweight and arbitrary shapeization, just must make anodal and ion conductive layer, negative pole and ion conductive layer engage, and keep this state and needn't be from external pressurized.
As the method for this respect, in United States Patent (USP) 5437692, disclose a kind of the polymer of lithium ion conductive as ion conductive layer, with the adhesive linkage of lithium-containing compound, positive pole and negative pole are joined to method on the above-mentioned conductive layer.In addition, in WO95/15589, disclose a kind of plastic ion conductive layer that forms earlier, engaged the method for anodal and negative pole again with this plasticity ion conductive layer.
But, if with disclosed method in the above-mentioned United States Patent (USP) 5437692, then can not obtain enough intensity, can not do battery to such an extent that enough must approach, in addition, the battery behavior of also high, charge-discharge characteristic of the ionic conduction resistance between ion conductive layer and positive pole and the negative pole etc. also has problem in practicality.In addition,,, can not obtain enough intensity, can not make battery to such an extent that enough must approach such problem so exist owing to engage plastic ion conductive layer if use above-mentioned WO95/15589.
The present invention makes in order to eliminate problem as described above, purpose provides a kind of manufacture method of lithium rechargeable battery: with adhesive resin positive pole and negative pole and ion conductive layer (spacer) are adjacent to, in the enough bond strengths that can guarantee between electrode and the spacer, can also guarantee to make between positive pole and negative pole and the spacer ionic conduction resistance and the battery that uses existing outer tinning roughly the same.
Disclosure of an invention
The manufacture method of the 1st kind of lithium rechargeable battery of the present invention possesses following operation: moulding positive pole and negative electrode active material layer on anodal and negative electrode collector respectively form the operation of each electrode; Be coated to operation on the spacer fluorine resin or polyvinyl alcohol being dissolved into the adhering resin solution that constitutes in the solvent as main component; Above-mentioned each electrode is alternatively overlapped the operation that forms the laminated body of multilayer between this spacer; This laminated body limit is added the flanging drying makes solvent evaporation to form the operation of tabular battery stack body; With make electrolyte impregnated in operation in this tabular battery stack body.
The manufacture method of the 2nd kind of lithium rechargeable battery of the present invention is in the manufacture method of above-mentioned the 1st kind of lithium rechargeable battery, and the spacer that Jie comes with cut-out forms the method for the laminated body of multilayer.
The manufacture method of the 3rd kind of lithium rechargeable battery of the present invention is to be in the manufacture method of above-mentioned the 1st kind of lithium rechargeable battery, is situated between to form the method for the laminated body of multilayer with the spacer that winds up.
The manufacture method of the 4th kind of lithium rechargeable battery of the present invention is in the manufacture method of above-mentioned the 1st kind of lithium rechargeable battery, is situated between to form the method for the laminated body of multilayer with the spacer of folding up.
Adopt the manufacture method of the above-mentioned the 1st to the 4th kind lithium rechargeable battery, make can prevent by positive pole and negative electrode active material and join positive pole on this active material respectively to and each electrode that negative electrode collector constitutes and spacer between peel off, even if there is not upright and outspoken housing, also can keep structure as battery, so can make battery lightweight, in the time of slimming, can also improve charge-discharge characteristic by means of the adhering resin solution that is coated on the spacer, employing has the way of the laminated body of multilayer, can obtain the lithium rechargeable battery of small compact and stability of characteristics.In addition, effect has under the situation of the external force that makes it to be out of shape or inner thermal stress on to the battery after forming, because what destroyed is between the active material layer of electrode and the collector body rather than spacer, so also have the effect that can keep fail safe.
The manufacture method of the 5th kind of lithium rechargeable battery of the present invention is in the manufacture method of above-mentioned the 1st kind of lithium rechargeable battery, and adhering resin solution is to be solvent with the dimethyl formamide, contains the method for the solution of fluorine resin or polyvinyl alcohol in this solvent.
The manufacture method of the 6th kind of lithium rechargeable battery of the present invention, be in the manufacture method of above-mentioned the 5th kind of lithium rechargeable battery, adhering resin solution is in dimethyl formamide, fluorine resin or polyvinyl alcohol contain 3～25 weight portions, it is desirable to contain the method for the solution of 5～15 weight portions.
The manufacture method of the 7th kind of lithium rechargeable battery of the present invention is in the manufacture method of above-mentioned the 1st kind of lithium rechargeable battery, carries out dry method in the air-flow below 80 ℃.Therefore, can shorten the dry needed time.
The manufacture method of the 8th kind of lithium rechargeable battery of the present invention is in the manufacture method of above-mentioned the 1st kind of lithium rechargeable battery, before being coated onto on the spacer, this separator surface is carried out the method for plasma treatment to adhering resin solution.Therefore, can further improve cementability.
The simple declaration of accompanying drawing
Fig. 1, Fig. 2 and Fig. 3 are the major part generalized sections of an embodiment of the lithium rechargeable battery that obtains with manufacture method of the present invention.Show to the schematic diagram signal property of Fig. 4 the formation of the single laminated body shown in above-mentioned Fig. 1, Fig. 2, Fig. 3.
Preferred embodiment
Below, with reference to the description of drawings embodiments of the invention.
The major part generalized section of Fig. 1, Fig. 2 and Fig. 3 shows an embodiment of lithium rechargeable battery of the present invention, shows to the schematic diagram signal property of Fig. 4 the formation of the single laminated body shown in above-mentioned Fig. 1, Fig. 2, Fig. 3.In each figure, the 12nd, laminated body, laminated body 12 is made of following part: the positive pole 1 that edge forming positive electrode active material layer 3 constitutes on positive electrode collector 2 that the metal by aluminium foil etc. constitutes, the negative pole 4 that edge forming negative electrode active material 6 constitutes on negative electrode collector 5 that the metal by copper etc. constitutes, the adhesive resin layer 8 that maintains the spacer 7 of the electrolyte that contains lithium ion and spacer 7 and positive pole 1 and spacer 7 are engaged with negative pole 4.Adhesive resin layer 8 has minute aperture, and this minute aperture keeps electrolyte.
As positive electrode collector 2 or negative electrode collector 5, so long as stable metal can use in lithium rechargeable battery, it is desirable to use aluminium as positive electrode collector 2, it is desirable to use copper as negative electrode collector.The shape of collector body 2,5, any can using such as paper tinsel, netted, wire netting, but, for obtain with active material between bond strength and for the dipping of the electrolyte after being easy to engage, be desirable as the big shape of surface area of netted, wire netting and so on.
Be contained in the active material in the positive electrode active material layer, for example can use the composite oxides between the transition metal of lithium and cobalt, manganese, nickel etc., composite oxides between lithium and the chalcogenide or in these complex chemical compounds, contain the complex chemical compound of transition metal, in above-mentioned composite oxides, have the complex chemical compound of various trace additives, but be not particularly limited in these materials.
The active material that is contained in the negative electrode active material layer 6 it is desirable to use the carbon element material, but in battery of the present invention, then can irrespectively use with the characteristic of chemical aspect, shape etc.
The material that uses in spacer 7 is so long as with dipping electrolyte such as the multiple aperture plasma membrane of insulating properties, net, nonwoven fabrics and can obtain the film of enough intensity, can use.The multiple aperture plasma membrane that use is made of polypropylene, polyethylene etc. is desirable from the viewpoint of guaranteeing fail safe.
As the macromolecular material that is used for forming adhesive resin layer 8, for example can use fluorine resin or with the mixture of fluorine resin, polyvinyl alcohol or be the mixture of main component with the polyvinyl alcohol as main component.As fluorine resin, specifically can use the polymer that in molecular configuration, has fluorine atom or the copolymer of vinylidene, 4-ethylene fluoride etc., the polymer or the copolymer that have vinyl alcohol in molecular skeleton are perhaps with mixture of polymethyl methacrylate, polystyrene, polyethylene, polypropylene, Vingon, polyvinyl chloride, polyacrylonitrile, polyethylene glycol oxide etc. etc.Particularly the Kynoar of fluorine resin is suitable.
As electrolyte, can use separately or in the mixture of ester series solvent of ether series solvent to dimethoxy-ethane, diethoxyethane, dimethyl ether, diethyl ether etc., propene carbonate, ethylene carbonate, diethyl carbonate, dimethyl carbonate etc., be dissolved with LiPF
6, LiClO
4, LiBF
4, LiCF
3SO
3, LiN (CF
3SO
2)
2, LiC (CF
3SO
2)
3Deng electrolyte solution.
Secondly, the manufacture method of the laminated body of lithium rechargeable battery shown in Figure 1 is described.
At first, to anodal 1 and the active material separately of negative pole 4 in mix the adhering resin (in anodal 1 active material, be mixed into again graphite powder etc. conductive material) of suitable amount and make to become paste, the active material of this paste is coated to respectively on positive electrode collector 2 and the negative electrode collector 5, and dry back forms each electrode of positive pole 1 and negative pole 4.Adhering resin used herein except the main component resin identical with the resin that uses, can also use various resins such as polyethylene in adhering resin layer 8.
Secondly, the above-mentioned application adhering resin solution that is coated with is coated on whole of spacer 7 equably.Coating can be used the czochralski method that lifts by adhering resin solution, adhering resin is dripped toward the spacer top, the excellent applicator method that applies equably with excellent applicator, the usefulness gunite applies adhering resin on spacer gunite etc.In addition, fluorine resin is being used under the situation of spacer, can carrying out plasma treatment to guarantee cementability the surface.
Adhering resin solution is being coated under the situation on the electrode rather than on the spacer, and adhering resin solution will infiltrate in electrode, and spacer and interelectrode adhesive strength are reduced.In addition, because adhering resin solution penetrates in the electrode,, reduce battery behavior with reducing the conductive path of lithium ion.Have again, contain as main component under the situation of Kynoar or polyvinyl alcohol, can dissolve, reduce the intensity of electrode because of the adhering resin solution that is coated with application at the adhering resin that is used for electrode formation.
By means of coating adhering resin solution on spacer, can prevent the infiltration of adhering resin solution in electrode, can prevent to result from that the electrode of adhering resin solution forms the dissolving of the adhering resin of usefulness, owing to improved spacer and interelectrode bonding force, so can suppress the reduction of pole strength.
Moreover, the adhering resin layer that appropriateness forms on the interface between spacer and the electrode, the active material that can improve electrode interior is for the doping of lithium ion and take off assorted utilization ratio.In other words, the easness that moves of lithium ion with in solution, equate, so doping of lithium ion and take off the assorted active material that concentrates on spacers abut and partly take place, though have the problem that the active material of electrode interior can not be used effectively, but cover spacer active material surface nearby by means of the adhering resin solution that is coated on the spacer, the active material that active part is become than electrode interior also lacks, make spacer nearby the active material and the doping of the active material of electrode interior and take off assorted speed homogenization, thereby improve efficiency for charge-discharge.
Adhering resin solution usually uses with 3～25 weight portions, and it is desirable to 5～15 parts by weight of polyvinylidene fluoride or polyvinyl alcohol is the N-methyl pyrrolidone solution of main component.Can not apply enough resins in that the thin excessively situation of adhering resin is next, the adhesive strength deficiency, too much in the next application of resin amount of the situation of solution overrich, the result becomes to interelectrode ionic conductivity reduces, and can not get good battery behavior.
Secondly, before adhering resin solution drying, one side of above-mentioned each electrode is overlapped between the spacer of coated upward adhering resin, after making it heat drying with backer roll etc. from the two sides plus-pressure, cut into the size of regulation, in the outside of the spacer that this side's electrode is clipped in the middle, overlap coated the opposing party's the electrode of going up adhering resin and cutting into the size of regulation, overlap the spacer that the opposing party's of coated last adhering resin electrode is clipped in the middle again outside.Carry out above-mentioned operation repeatedly, make the battery stack body of multilayer, the limit adds the battery stack body of dry this multilayer of flanging, forms tabular battery stack body.At this moment heating-up temperature it is desirable to 60～100 ℃.Under than 60 ℃ of also low temperature, drying needs long time, is unfavorable from the engineering aspect.Under than 100 ℃ of also high temperature, might cause bad influence to spacer etc., also undesirable.Then, sometimes to continue heating in order to remove residual solvent, but not need special plus-pressure in this case.In the heating this practice that the time reduces pressure, be effectively to shortening drying time, but be not necessary condition.
Going in the tabular battery stack body insertion aluminium lamination press mold sack that has the positive pole 1 of above-mentioned formation in this wise and the laminated body that negative pole 4 bonds to the multilayer on the spacer 7, the above-mentioned electrolyte of dipping under decompression state, aluminium lamination press mold sack is carried out heated sealant, finish lithium rechargeable battery.
As mentioned above, since become can prevent by positive pole and negative electrode active material and join positive pole on this active material respectively to and each electrode that negative electrode collector constitutes and spacer between peel off, even if there is not upright and outspoken housing, also can keep structure as battery, so can make that battery is lightweight, slimming the time, can also improve charge-discharge characteristic by means of the adhering resin solution that is coated on the spacer, employing has the way of the laminated body of multilayer, can obtain the lithium rechargeable battery of small compact and stability of characteristics.In addition, effect has under the situation of the external force that makes it to be out of shape or inner thermal stress on to the battery after forming, because what destroyed is between the active material layer of electrode and the collector body rather than spacer, so also have the effect that can keep fail safe.
In addition, solvent as the solution of adhering resin, adopt and use boiling point lower than N-methyl pyrrolidone (201 ℃ of boiling points), the way of dimethyl formamide of the adhering resin that is main component can be dissolved with the fluorine resin of Kynoar etc. or with the polyvinyl alcohol, solvent evaporation operation short timeization can be made.In the dimethyl formamide is that the adhering resin of main component is decided to be 3～25 weight portions with Kynoar or polyvinyl alcohol, it is desirable to be decided to be 5～15 weight portions.
In addition, adopt to make each electrode is overlapped heat drying after the spacer top that has applied adhering resin solution to be exposed to the way of carrying out in the air-flow below 80 ℃, can shorten the dry needed time
Below, provide the embodiment of the example that comprises Fig. 2 and Fig. 3, further the present invention is at length described.
Embodiment 1
(anodal making)
Employing is made 87 weight portion LiCoO
28 weight portion graphite powders, 5 weight portion Kynoar are distributed to the positive active material cream that the way in the N-methyl pyrrolidone (below, be called NMP) is modulated into, with about 300 microns of doctor blade (doctor Blade) method applied thickness, form the positive active material film.Mounting becomes the aluminium net of 30 microns of the thickness of positive electrode collector 2 at an upper portion thereof, is adjusted into the positive active material cream of 300 microns of thickness more at an upper portion thereof once more with the coating of doctor blade method.It is placed to become after 60 minutes in 60 ℃ drying machine be leather hard, form the laminated body of positive electrode collector 2 and positive active material.Employing makes this laminated body roll into 400 microns way, is made into the positive pole 1 that has formed positive electrode active material layer 3.After being dipped into this positive pole 1 in the electrolyte, measure the peel strength between positive electrode active material layer and the positive electrode collector, the value of this intensity is 20～25gf/cm.
(making of negative pole)
95 weight portion メ ソ Off ェ-ズ マ ィ Network ロ PVC-ズ カ-ボ Application (production of Osaka gas), 5 weight portion Kynoar are distributed to the negative electrode active material cream that is modulated among the NMP, be 300 microns of thickness with the coating of doctor blade (doctor Blade) method, form the negative electrode active material film.Mounting becomes the copper mesh of 20 microns of the thickness of negative electrode collector at an upper portion thereof, is adjusted into the negative electrode active material cream of 300 microns of thickness more at an upper portion thereof once more with the coating of doctor blade method.
It is placed to become after 60 minutes in 60 ℃ drying machine be leather hard, form the laminated body of negative electrode collector 5 and negative electrode active material.Employing makes this laminated body roll into 400 microns way, is made into the negative pole 4 that has formed negative electrode active material layer 6.
After being dipped into this negative pole 4 in the electrolyte, measure the peel strength between negative electrode active material layer 6 and the negative electrode collector 5, the value of this intensity is 5～10gf/cm.
(making of battery)
With 5 parts by weight of polyvinylidene fluoride, the such composition ratio of 95 weight portion NMP is mixed and stirred fully to be made it to become uniform solution and makes adhering resin solution.
Secondly, (ヘ キ ス ト produces to the porous polypropylene thin plate of 2 continuous rectangular band shapes using as spacer 7 in employing, commodity are called セ Le ガ-De #2400) a face separately on, above-mentioned adhering resin drips, move the way of the excellent applicator on the glass tube that the long filament of diameter 0.5mm compactly is wound into diameter 1cm in the spacer top, on whole of spacer, apply adhering resin solution equably.
Secondly, before the adhering resin drying, positive pole 1 as a side electrode is closely pasted on the applicator surface of above-mentioned acrylic sheet, and with backer roll etc. behind the plus-pressure heat drying of two sides, cut into the size of regulation, secondly, on the uncoated face of the acrylic sheet after this cut-out, similarly apply adhering resin solution with excellent applicator, the negative pole 4 as the opposing party's electrode of the size that cuts into regulation overlapped on this applicator surface make it to be adjacent to, on the uncoated face of the acrylic sheet that the positive pole after the above-mentioned cut-out is clipped in the middle, apply adhering resin solution with excellent applicator again, this applicator surface is overlapped on the above-mentioned negative pole.Carry out this repeatedly and fix, make the laminated body of multilayer.Employing make the laminated body limit of this multilayer add flanging in drying machine under calm state 60 ℃ of ways that heat, NMP as solvent is removed in evaporation, forms tabular battery stack body shown in Figure 1.With the way that makes NMP evaporation, make adhering resin become film for porous matter with continuous hole.
Then, the tabular battery stack body of the size that forms regulation is inserted in the sack of aluminium lamination press mold, under reduced pressure, dipping is with 1.0mol/dm
3Concentration in the mixed solvent (mol ratio is 1: 1) of ethylene carbonate (production of Northeast chemical company) and dimethyl carbonate (producing), dissolved LiPF with the pure medicine of light company
6The electrolyte of (Tokyo changes into company and produces).Seal processing with the way of heated sealant afterwards, make lithium rechargeable battery with battery stack body shown in Figure 1.
Embodiment 2
Only as follows the change of the adhering resin solution of the foregoing description 1, through processing similarly to Example 1, make lithium rechargeable battery with battery stack body shown in Figure 1.
With the polyvinyl alcohol of 5 weight portions, the such composition ratio of 95 weight portion NMP is mixed and stirred fully to be made it to become uniform solution to make adhering resin molten.
Embodiment 3
Replace the NMP as the solvent of adhering resin solution among the foregoing description 1 and the embodiment 2 with dimethyl formamide, other handles with embodiment 1 the samely, obtains having the lithium rechargeable battery of battery stack body shown in Figure 1.In this case, make the operation of solvent evaporation and embodiment 1 than can short timeization.
Replace NMP among the foregoing description 1 and the embodiment 2 with dimethyl formamide as the solvent of adhering resin solution, the operation that makes solvent evaporation is exposed in 60 ℃ the air-flow and carries out, in addition handle with embodiment 1 the samely, obtain having the lithium rechargeable battery of battery stack body shown in Figure 1.
In this case, make the operation of solvent evaporation and embodiment 1,2 and 3 than can short timeization.
To measuring at the strength of glass of the lithium rechargeable battery that obtains at the foregoing description 1～4.Anodal 1 and the peel strength of spacer 7, negative pole 4 and spacer 7 be respectively 23gf/cm, 12gf/cm, surpassed active material layer 3,6 in each electrode and the adhesive strength between the collector body 2,5.
Embodiment 5
The foregoing description 1 is situated between and forms the tabular battery stack body of the laminated body with multilayer with the polylith spacer after cutting off.In the present embodiment, then being situated between forms the tabular battery stack body of the laminated body with multilayer with the spacer that winds up, in addition handle with embodiment 1 the samely, obtains having the lithium rechargeable battery of battery stack body shown in Figure 2.
(making of battery)
To (ヘ キ ス ト produces by porous acrylic sheet, trade name セ Le ガ-De #2400) coating adhering resin solution on the single face of each of 2 spacers 7 of the band shape of Gou Chenging, between the face after banded negative pole 4 (or anodal) is clipped in this coating and after being adjacent to stickup, the limit adds the flanging heating makes it dry.
On the face with a side of the spacer 7 of negative pole 4 (or anodal) the articulate band shape that is clipped in the middle, coating adhering resin solution makes the amount of the end bending regulation of this spacer 7, anodal 1 (or negative pole) is clipped in crease in the middle of coincidence get up to feed in the laminating machine.Then, coating adhering resin solution on the opposing party's of the spacer of above-mentioned band shape face, pasting other positive pole 1 (or negative pole) with the opposed position of the positive pole 1 (or negative pole) that before was clipped in the crease place, spacer is rolled into oval shape, carry out the limit repeatedly and paste the operation of other positive pole 1 (or negative pole) limit coiling spacer, form the laminated body of multilayer, the limit adds flanging to this cell body and carries out drying, is made into the such tabular battery stack body of Fig. 2.
In the present embodiment, though what illustrate is the example of coiling spacer 7, but also can be to fold the negative pole 4 of band shape (or anodal 1) is joined to the spacer between the spacer 7, carry out pasting the operation of anodal 1 (or negative pole) edge contraction spacer repeatedly on one side.
Embodiment 6
Spacer, positive pole and negative pole this point and the foregoing description 5 of the band shape of only reeling at the same time are different, and all the other and embodiment 1,5 carry out same processing, make the lithium rechargeable battery with tabular battery stack body shown in Figure 3.
(making of battery)
Banded negative pole 4 (or anodal) is configured in by (the ヘ キ ス ト production of porousness acrylic sheet, trade name セ Le ガ-De #2400) between 2 spacers 7 of the band shape of Gou Chenging, and makes it the outstanding outside that strip-shaped positive electrode 1 (or negative pole) is configured in a side spacer 7 a certain amount ofly.On the lateral surface of the face of the inboard of each spacer 7 and anodal 1 (or negative pole) spacer 7 of configuration, the coating adhering resin, make anodal 1 (or negative pole) and 2 spacers 7 and negative pole 4 (or anodal) overlap ground feeding laminating machine, then, on the face in the outside of the opposing party's spacer 7, the coating adhering resin, paste on this applicator surface after making positive pole 1 (or negative pole) bending that highlights, laminate behind the lamination is wound into oval shape, make the positive pole after this bending 1 (or negative pole) bag is entered the inboard, form the laminated body of multilayer, heating edge dry this cell body in limit is made tabular battery stack body.
Characteristic to the lithium rechargeable battery that obtains in embodiment 1～6 is estimated, and having obtained weight energy density is 100Wh/kg, even if after carrying out 200 times discharging and recharging with current value C/2, charging capacity still can be kept 75% of the initial stage.
The possibility of industrial utilization
Can be used as portable personal computer, cell-phone etc. portable electronic machine two Primary cell, when improving the performance of battery, can also realize miniaturization, lightweight and Arbitrary shape.
Claims (8)
1. the manufacture method of a lithium rechargeable battery is characterized in that: possess following operation: moulding positive pole and negative electrode active material layer on anodal and negative electrode collector respectively form the operation of each electrode; Be coated to operation on the spacer fluorine resin or polyvinyl alcohol being dissolved into the adhering resin solution that constitutes in the solvent as main component; Above-mentioned each electrode is alternatively overlapped the operation that forms the laminated body of multilayer between this spacer; This laminated body limit is added the flanging drying makes solvent evaporation to form the operation of tabular battery stack body; With make electrolyte impregnated in operation in this tabular battery stack body.
2. the manufacture method of the described lithium rechargeable battery of claim 1 is characterized in that: the spacer that comes with cut-out of being situated between forms the laminated body of multilayer.
3. the manufacture method of the described lithium rechargeable battery of claim 1 is characterized in that: being situated between forms the laminated body of multilayer with the spacer that winds up.
4. the manufacture method of the described lithium rechargeable battery of claim 1 is characterized in that: being situated between forms the laminated body of multilayer with the spacer of folding up.
5. the manufacture method of the described lithium rechargeable battery of claim 1, it is characterized in that: adhering resin solution is to be solvent with the dimethyl formamide, contains the solution of fluorine resin or polyvinyl alcohol in this solvent.
6. the manufacture method of the described lithium rechargeable battery of claim 5, it is characterized in that: adhering resin solution is in dimethyl formamide, fluorine resin or polyvinyl alcohol contain 3～25 weight portions, it is desirable to contain the solution of 5～15 weight portions.
7. the manufacture method of the described lithium rechargeable battery of claim 1 is characterized in that: carry out drying in the air-flow below 80 ℃.
8. the manufacture method of the described lithium rechargeable battery of claim 1 is characterized in that: before being coated onto on the spacer, this separator surface is carried out plasma treatment to adhering resin solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB97181712XA CN1224127C (en) | 1997-12-22 | 1997-12-22 | Manufacture method of lithium ion secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB97181712XA CN1224127C (en) | 1997-12-22 | 1997-12-22 | Manufacture method of lithium ion secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1245593A true CN1245593A (en) | 2000-02-23 |
| CN1224127C CN1224127C (en) | 2005-10-19 |
Family
ID=5178213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB97181712XA Expired - Fee Related CN1224127C (en) | 1997-12-22 | 1997-12-22 | Manufacture method of lithium ion secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1224127C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324728C (en) * | 2002-05-18 | 2007-07-04 | 三星Sdi株式会社 | Lithium secondary cell of electrolyte decomposition being inhibited and preparing process thereof |
| CN101103070B (en) * | 2005-01-14 | 2010-08-25 | 三井化学株式会社 | Polyvinyl acetal resin varnish, gelling agent, nonaqueous electrolyte and electrochemical element |
| CN105190954A (en) * | 2013-07-29 | 2015-12-23 | 株式会社Lg化学 | Electrode for secondary battery and lithium secondary battery comprising same |
| CN108666528A (en) * | 2013-03-12 | 2018-10-16 | 新强能电池公司 | Electrode, electrochemical cell and the method for forming electrode and electrochemical cell |
-
1997
- 1997-12-22 CN CNB97181712XA patent/CN1224127C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324728C (en) * | 2002-05-18 | 2007-07-04 | 三星Sdi株式会社 | Lithium secondary cell of electrolyte decomposition being inhibited and preparing process thereof |
| CN101103070B (en) * | 2005-01-14 | 2010-08-25 | 三井化学株式会社 | Polyvinyl acetal resin varnish, gelling agent, nonaqueous electrolyte and electrochemical element |
| US8124272B2 (en) | 2005-01-14 | 2012-02-28 | Mitsui Chemicals, Inc. | Polyvinyl acetal resin varnish gelling agent, nonaqueous electrolyte solution, and electrochemical device |
| CN108666528A (en) * | 2013-03-12 | 2018-10-16 | 新强能电池公司 | Electrode, electrochemical cell and the method for forming electrode and electrochemical cell |
| CN105190954A (en) * | 2013-07-29 | 2015-12-23 | 株式会社Lg化学 | Electrode for secondary battery and lithium secondary battery comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1224127C (en) | 2005-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3225867B2 (en) | Lithium ion secondary battery and method of manufacturing the same | |
| KR100397043B1 (en) | Lithium ion secondary battery and manufacture thereof | |
| JP3225871B2 (en) | Manufacturing method of lithium ion secondary battery | |
| JP3997573B2 (en) | Lithium ion secondary battery and manufacturing method thereof | |
| US6051343A (en) | Polymeric solid electrolyte and lithium secondary cell using the same | |
| JPH10302843A (en) | Adhesive for battery, battery using it, and its manufacture | |
| JP4008508B2 (en) | Method for producing lithium ion secondary battery | |
| WO1999026306A1 (en) | Lithium ion secondary battery and manufacture thereof | |
| JP3474853B2 (en) | Manufacturing method of lithium ion secondary battery | |
| JP2003151512A (en) | Battery | |
| JPH10289732A (en) | Battery adhesive and battery using the same | |
| JP3297034B2 (en) | Secondary battery and method of manufacturing the same | |
| WO1999031750A1 (en) | Adhesive for cells, a cell using the same and a process for producing cells | |
| CN1224127C (en) | Manufacture method of lithium ion secondary battery | |
| JP2003151638A (en) | Lithium-ion secondary battery | |
| WO1999034470A1 (en) | Process for manufacture of lithium ion secondary battery | |
| WO1999026308A1 (en) | Bonding agent for cells and cell using the same | |
| KR100329294B1 (en) | Method for manufacturing lithium ion battery | |
| CN1214479C (en) | Lithium ion secondary battery and manufacture thereof | |
| CN1214480C (en) | Lithium ion secondary battery and its manufacture | |
| CN1237651C (en) | Lithium ion secondary battery | |
| KR100301996B1 (en) | Manufacture of lithium ion secondary battery | |
| JP2002184468A (en) | Secondary battery | |
| KR100300531B1 (en) | Lithium ion secondary battery and method of fabricating thereof | |
| KR100300534B1 (en) | Bonding agent for cells and cell using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051019 Termination date: 20141222 |
|
| EXPY | Termination of patent right or utility model |