CN1992380A - Pouch-type battery and method of making the same - Google Patents
Pouch-type battery and method of making the same Download PDFInfo
- Publication number
- CN1992380A CN1992380A CNA2006101682569A CN200610168256A CN1992380A CN 1992380 A CN1992380 A CN 1992380A CN A2006101682569 A CNA2006101682569 A CN A2006101682569A CN 200610168256 A CN200610168256 A CN 200610168256A CN 1992380 A CN1992380 A CN 1992380A
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- Prior art keywords
- bag
- pouch
- recess
- type battery
- extension
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Links
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000007789 sealing Methods 0.000 claims description 63
- 210000004744 fore-foot Anatomy 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 27
- 210000002445 nipple Anatomy 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 230000002787 reinforcement Effects 0.000 claims description 9
- 239000004677 Nylon Substances 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229920005672 polyolefin resin Polymers 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 26
- 239000003792 electrolyte Substances 0.000 description 12
- 229920005989 resin Polymers 0.000 description 9
- 239000011347 resin Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000011149 active material Substances 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910014689 LiMnO Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004770 chalcogenides Chemical class 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- BHZCMUVGYXEBMY-UHFFFAOYSA-N trilithium;azanide Chemical compound [Li+].[Li+].[Li+].[NH2-] BHZCMUVGYXEBMY-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A pouch type battery includes a pouch case having a front region, a rear region, first and second side regions, and a cover, wherein the first side region connects the front region to the rear region at a first side of the battery, and the second side region connects the front region to the rear region at a second side of the battery, the first and second sides being opposite to one another, the rear region has a recess therein to accommodate an electrode assembly, and two extending portions extend from first and second sides of the recess, the two extending portions being wrapped around to form the first and second side regions and the front region, inward-facing surfaces of the two extending portions being bonded to each other to form a first seal in the front region, at least one of the extending portions extending beyond the first seal and being further wrapped around to form the cover, the cover extending at least partially across the front region.
Description
Technical field
The present invention relates to a kind of battery.More particularly, the present invention relates to pouch-type battery and manufacture method thereof.
Background technology
Battery can adopt multiple electrochemical technology, and can be with multiple formative factor manufacturing.Generally speaking, battery can be divided into primary cell or disposable use battery and secondary cell or rechargeable battery.Many battery technologies use lithiums, lithium secondary battery for example, and owing to the cause of the reaction between lithium and the water has adopted water-insoluble electrolyte.For example, described electrolyte can be the solid polymer that comprises lithium salts, or lithium salts is dissociated in certain organic solvent and the liquid that forms.Lithium secondary battery comprises the lithium ion polymer battery that uses organic liquid electrolytes lithium metal and lithium ion battery and use solid polyelectrolyte.In the solid-state type lithium ion polymer battery, the risk of electrolyte leakage is little, yet in liquid state or gel type Li-ion polymer battery, might leak organic bath.
With the metal can that usually uses in the battery with higher electrolyte leakage risk forms sharp contrast is for the little battery of electrolyte leakage risk, can adopt bag as battery container.When using bag, can reduce the weight and the thickness of battery usually, and freely change the shape of battery, this has formed contrast with the situation of using metal can.
Fig. 1 has described the perspective view of traditional pouch-type battery before the bag sealing, and Fig. 2 has described the perspective view of battery shown in Figure 1 after bag seals and be folding, and Fig. 3 has described along the cutaway view of the lines A-A intercepting of Fig. 2.With reference to Fig. 1-3, traditional pouch-type battery can comprise electrode assemblie 3 and hold the bag material 4 of described electrode assemblie 3.
With reference to Fig. 1, the method that forms traditional pouch-type battery will be described now.The center of at first, roughly rectangular bag material 4 can be folded to form rear portion 4b and anterior 4a.In the 4b of rear portion, form recess 6, can hold electrodes assembly 3 in recess 6.Can use hermetic unit 5 that anterior 4a and rear portion 4b are sealed.Core cell as described formation can be encapsulated in the hard container, to form the hard pack battery (not shown).In addition, heatmeltable resin closure can be used in two ends longitudinally.
During non-fold seals part 5, hard container may need additional space to hold hermetic unit 5 when using naked unit (bare cell) to form rigid package.Therefore, can be to the respective side fold seals part 5 of recess 6, as shown in Figure 2.Even when bag was not put hard container into, the hermetic unit 5 of bag was collapsible to reduce the integral width of battery.
As shown in Figure 3, the recess 6 in traditional pouch-type battery can have straight substantially or with the sidewall near 90 ° of bendings.Correspondingly, when to recess 6 fold seals parts 5, the hermetic unit 5 that is folded also is straight substantially or slight bending.As a result, if combine with the electrode assemblie 3 with round sides, the inside of traditional pouch-type battery will not filled effectively.Therefore, not maximization of the capacitance of the battery of per unit volume.In addition, with reference to Fig. 3, come fold seals part 5 that the integral width of naked unit has been increased the quantity of 2W by this way, W is the width along each hermetic unit 5 of the respective side surface of bag here.
Be appreciated that because the sealed part 5 of bag has taken extra 2W width, conventional bag type battery limitation can place the size of electrode assemblie 3 wherein.And if bag will be placed in the hard container, between erecting stage, the folding edge of bag may touch hard container, causes bag impaired.Because bag can be extremely thin, may be easy to make electrode assemblie impaired.
In addition, described hard container can have the thick wall of about 0.6mm, makes entire cell thicker.Correspondingly, if traditional pouch-type battery at device force battery size to be restricted, the capacitance of battery may reduce.On the contrary, the capacitance that increases battery needs bigger battery, and this just need design change to other aspects of the device that will power.
Summary of the invention
Therefore the present invention relates to a kind of pouch-type battery and manufacture method thereof, and has overcome one or more problems that restriction and shortcoming owing to prior art produce.
Therefore, the feature of the embodiment of the invention has provided a kind of pouch-type battery and manufacture method thereof that is configured to reduce cell integrated width.
Therefore, another feature of the embodiment of the invention has provided a kind of pouch-type battery, and it is configured to increase and is suitable for that part of of hold electrodes assembly in the internal volume, and the manufacture method of this pouch-type battery is provided.
Therefore, another feature of the present invention has provided a kind of pouch-type battery, and described pouch-type battery has the covering jacket of protecting battery and the external dimensions that increases battery not obviously.
In above-mentioned and other feature and advantage of the present invention at least one can realize by a kind of pouch-type battery is provided, the included bag of this pouch-type battery has comprised forefoot area, rear region, territory, first and second lateral areas and covering jacket, territory, wherein said first lateral areas is connected to rear region with first side of battery with forefoot area, territory, described second lateral areas is connected to rear region at the second side place of battery with forefoot area, described first side and second side are respect to one another, have recess in the described rear region and come the hold electrodes assembly, and extend from first and second sides of described recess two extensions, reeled to form described territory, first and second lateral areas and described forefoot area in described two extensions, described two extensions towards interior surface by bonded to each other in described forefoot area, to form first sealing strip, in the described extension at least one extends beyond described first sealing strip and further reeled to form described covering jacket, and described covering jacket extends at least partly across described forefoot area.
Described covering jacket can be extended across described forefoot area from described first sealing strip along first direction, one in described two extensions can be to extend beyond the shorter extension that described first sealing strip reaches first length, in described two extensions another can be to extend beyond the longer extension that described first sealing strip reaches second length, described second length is greater than described first length, and described longer extension can cover described shorter extension, in described covering jacket, the surface outward of facing described shorter extension towards interior surface of described longer extension.
Described pouch-type battery may further include the electrode assemblie that is positioned over bag inside in the recess, described electrode assemblie comprises first and second electrodes, these two electrodes have insertion separator therebetween, described first electrode has first electrode nipple from its extension, and described second electrode has second electrode nipple from its extension.
Described pouch-type battery may further include from two flange portions of the upside of described recess and downside extension, described upside and downside are toward each other, wherein said flange portion can be adhered to described extension to form sealing strip and lower seal bar, described electrode nipple can be given prominence to by the described sealing strip of going up from electrode assemblie, thereby extend to the outside of bag, and described lower seal bar can be folding facing to the downside of recess.
Described first sealing strip can and can generally be placed in the center of described forefoot area along described forefoot area longitudinal extension.The side of described recess can be shaped form.Described pouch-type battery may further include the electrode assemblie that places recess, and the curve side of its center dant can have the curvature roughly the same with the corresponding outer surface of electrode assemblie.
Described covering jacket can be extended across described forefoot area, rear region, territory, first lateral areas and territory, second lateral areas fully.Described covering jacket can be extended around battery at least once.Described two extensions can have multilayer, described multilayer comprises the surface outward that nylon is made, polyolefin resin make towards interior surface and at described surface and interior layer between interior surface outward, described interior layer is a thin metal film.
Described bag can comprise the rear surface, it has the recess that is defined in wherein, described two extensions are formed by described rear surface, and the flange portion of described rear surface extends from the 3rd side of described recess, described bag can comprise front surface, described front surface comprises that extension is across the first of described recess and the circumference part of facing described flange portion and extension, described circumference part can be sealed to described flange portion, described circumference part can be to the sealing of described two extensions to form two laps, described two laps can be reeled to form described territory, first and second lateral areas and described forefoot area, described two laps can be by bonded to each other forming described first sealing strip, and at least one a part of described two laps can extend beyond described sealing strip to form described covering jacket.
One end of described covering jacket adheres to the zone below the described bag.Described first surface and described second surface can intactly be formed by a bag material element near doubling.Described front surface can comprise second recess, and described front surface and rear surface are symmetrical.Described lap can comprise unencapsulated zone, and partly not to the sealing of described two extensions, described non sealed regions is corresponding to the zone that is folded of described covering jacket at the described circumference of this location.Described pouch-type battery may further include and places between described recess and the described covering jacket and/or the reinforcement feature between described first and the described covering jacket.
In above-mentioned and other feature and advantage of the present invention at least one can realize that by the manufacture method that a kind of pouch-type battery is provided this method comprises: be provided at the bag that wherein is formed with recess; Place electrode assemblie in described recess; Circumference along described recess forms sealing; Two extensions of extending of reeling from described recess around described bag, and come to form second sealing strip along the forefoot area of bag with described extension is bonded to each other; And further reel in the described extension at least one to form the covering jacket that covers described forefoot area at least in part around bag.
Described method may further include and applying predetermined tension force to described extension around bag when reeling described extension, and described predetermined tension force enough causes the fit external shape of described electrode assemblie of described extension.Described method may further include end with described covering jacket and adheres to zone below the described bag.The end of described covering jacket can be adhered to the following zone of bag near described second sealing strip.
Description of drawings
For those of ordinary skills, above-mentioned or other feature and advantage of the present invention will become more clear by with reference to the accompanying drawings exemplary embodiment being described in detail, in the accompanying drawings:
Fig. 1 has described the perspective view of traditional pouch-type battery before the bag sealing;
Fig. 2 has described the perspective view of battery shown in Figure 1 after bag seals and be folding;
Fig. 3 has described along the cutaway view of the line A-A intercepting of Fig. 2;
Fig. 4-7 described according to each stage in the manufacture method of the pouch-type battery of the embodiment of the invention;
Fig. 8 has described the perspective view according to the bag of the embodiment of the invention;
Fig. 9 A-9C has described the vertical view at the possibility of the seal operation of bag shown in Figure 8;
Figure 10 has described the cutaway view according to the pouch-type battery of further embodiment of this invention;
Figure 11 A-11E has described each stage of the manufacture method of pouch-type battery according to another embodiment of the present invention; With
Figure 12 has described the cutaway view according to the pouch-type battery with reinforcement feature of the embodiment of the invention.
Embodiment
Submit korean patent application No.10-2005-0134562 in Korea S Department of Intellectual Property on December 29th, 2005, and submit in the name of Korea S Department of Intellectual Property on December 29th, 2006 and to be called the korean patent application No.10-2005-0134553 of " pouch-type battery (Pouch Type Battery) ", incorporate into by reference with its integral body respectively at this.
Now will carry out more detailed description to the present invention with reference to the accompanying drawings hereinafter, be described in the drawings exemplary embodiment of the present invention.Yet the present invention can transform in different ways, and should not be construed as limited to the embodiment that sets forth herein.Exactly, these embodiment that provided make the disclosure become detailed and perfect, and give expression to scope of the present invention fully to those skilled in the art.
In the accompanying drawings, clear in order to illustrate, the size in layer and zone may be by exaggerative.Should be appreciated that equally, when layer or element described for another layer or substrate " on " time, can be to be located immediately on other layer or the substrate, perhaps also insert layer can be set.Further, should be appreciated that, when layer is described at another layer D score the time, can be directly under it, also one or more insert layers can be set.In addition, be also to be understood that when a layer described for two layers " between " time, this layer can be the unique layer between described two layers, perhaps also one or more intermediate layers may be set.Run through in full, identical reference number refers to components identical.
According to the CONSTRUCTED SPECIFICATION of the pouch-type battery of the embodiment of the invention, and each stage of corresponding method of manufacture, be described now with reference to Fig. 4-7.At first with reference to Fig. 4 and Fig. 5 B, bag material 40 has the recess 43 (shown in the dotted line among Fig. 4) of formation therein with hold electrodes assembly 30, and recess 43 comprises a basal surface and four sidewalls.The degree of depth that recess 43 can have only is the part of electrode assemblie 30 thickness, for example, is the only about half of of electrode assemblie 30 thickness, like this when electrode assemblie 30 at the battery assembly process by initial placement in recess 43 time, electrode assemblie 30 is outstanding from recess 43.
Bag material 40 can be a multilayer material, and it can comprise, for example, the nuclear that forms by metal such as aluminium (Al), towards interior lip-deep hot melt layer, and at outward lip-deep separator.Hot melt layer can be by for example making such as the improvement polypropylene of molded polypropylene (CPP) fluoropolymer resin, as adhesive layer.Separator can be by for example making such as the resin of nylon, PETG (PET).
Each electrode can comprise, for example, contains the mortar bed of active material, and it is placed at least one surface of collector, and described collector can be for example metal forming or wire netting (not shown).Chalcogenide, for example, synthetic metal oxide, for example LiCoO
2, LiMn
2O
4, LiNiO
2, LiNi
1-XCo
XO
2(0＜x＜1), LiMnO
2, or the like, can be used as active material at the mortar on a surface in the electrode collector.Carbon (C) sill, silicon (Si), tin (Sn), tin oxide, synthetic ashbury metal, transition metal oxide, metal lithium nitride, lithium metal oxide or the like can be as the active materials of another surperficial mortar of the second electrode collector.Each electrode can also comprise connected joint, and for example, joint 37 and 38 is used to be electrically connected to the outside of battery.
In a kind of scheme (not shown details), an electrode can comprise the collector of being made by aluminium (Al), and with the electrode nipple of its welding, this electrode nipple for example can be an aluminium (Al), and outstanding predetermined length.Another electrode can comprise the collector made by copper (Cu) and with the electrode nipple of its welding, this electrode nipple for example can be a nickel (Ni), and outstanding predetermined length.Insulating tape 39 can be provided with and prevent that first electrode nipple 37, second electrode nipple 38 and bag material 40 are by short circuit.Particularly, can stretch out the battery part, for example pass flange portion 42 parts, insulating tape 39 is set at electrode nipple 37 and 38, for example, resin strip.Thereby insulating tape 39 can prevent electrode nipple 37 and 38 and the metal sheet of bag material 40 form short circuit, and can help bag is sealed.The annex that electrode nipple 37 and 38 can be electrically connected to such as protective circuit module (PCM), positive temperature coefficient (PTC) or similar structures (not shown) forms core cell.
For example adopt deep draw to handle, can form recess 43, make two opposing sidewalls be bent.The curve shape of two relative sidewalls can be corresponding to the shape of the curve side of electrode assemblie 30.Correspondingly, when electrode assemblie 30 placed recess 43, the shape of the inner space that is limited by recess 43 can closely meet the shape of electrode assemblie 30, and therefore, the inner space of recess 43 can effectively be used, thereby has improved the capacitance of battery per unit volume.
Recess 43 can have the shape of essentially rectangular in vertical view.Two flange portions 42 and 44 can extend out from two minor faces of recess 43, just extend out from both sides up and down.Two extensions 46 and 48 can extend out from two long limits of recess 43.Flange portion 42 can be concordant with 44 corresponding side surface with flange portion 42 with lower limb with 44 corresponding top edge, and the outer perimeter of bag material 40 is concordant and in the form of a substantially rectangular like this, as shown in Figure 4.
Can be longer than another for one in two extensions 46 and 48.For example, as shown in Figure 4, extension 46 is shorter relatively, have length l 1, and extension 48 is longer relatively, has length l 2.Such shape can obtain by rectangular bag exterior material 40 being carried out the deep draw processing, thereby makes formed recess 43 off-center.
With reference to Fig. 4 and Fig. 5 A, the further details of the manufacture method of described strip-cell is described now.Extension 46 and 48 can be folded the electrode assemblie 30 that places recess 43 with covering.Extension 46 and 48 can be along the floding at boundary of they and recess 43 and flange portion 42 and 44.
With reference to Fig. 4, extension 46 and 48 can be folded the zone 461 that makes in the extension 46 and contact zone 481 in the extension 48.Extension 46 with 48 can be in that to contact part molten together towards interior surface, thereby make zone 461 be fused to zone 481.
With reference to Fig. 5 A, fusion area 461 and 481 can form sealing strip 51.Sealing strip 51 can extend longitudinally along the front area of bag 50.And bag 50 can be passed local sealed to form sealing strip 52, so that an end of bag 50 keeps open and blow-by that flange portion 42 turns back by 46 and 48 quilts in the extension.Electrode nipple 37 and 38 is given prominence to by sealing strip 52, to be exposed to bag 50 outsides.
When the front area of bag 50 forms sealing strip 51, two extensions 46 and 48 can be pulled together towards the center of bag 50 front areas, fuse together along zone 461 and 481 then.When two extensions 46 and 48 were pulled together by this way, they were reeled to form the front area of bag 50 around electrode assemblie 30.As mentioned above, recess 43 can have the degree of depth more shallow than the thickness of electrode assemblie 30, and like this, when electrode assemblie 30 initial placement were in recess 43, electrode assemblie 30 was partly outstanding from recess 43.Correspondingly, when being reeled around electrode assemblie 30 in extension 46 and 48 when forming the front area of bag 50, extension 46 and 48 can be pulled in tightly electrode assemblie 30 around, as supporting reference surface.Therefore, bag 50 territory, lateral areas 53 can be the curved surface that has with the roughly the same shape of the external surface shape of electrode assemblie 30.
With reference to Fig. 6, electrolyte 60 can be by offering the electrode assemblie 30 of inside battery along the still unencapsulated zone of flange portion 44, and an end of the residing battery in described still unencapsulated zone can be opposite with that end that electrode nipple 37 and 38 stretches out.Non sealed regions along flange portion 44 then can be sealed, and is as mentioned below.Certainly, can carry out seal operation with different orders, so that sealing strip 52 forms at last, and electrolyte 60 injects by flange portion 42.
Because electrode 60 can be by by being in the flange portion injection that battery one end open, the end surfaces of electrode assemblie 30 can expose to the electrolyte that injected 60, described electrolyte can by battery lead plate 31 and 35 and separator 33 between infiltration and easily entering in the slit of electrode assemblie 30.
After electrolyte 60 was introduced batteries, flange portion 44 can be for example be sealed to the extension 46 of being reeled and 48 surface by the heat fused process,, is sealed to the butting surface of extension 46 and 48, to form the front portion of battery that is.Like this, sealing strip 57 can be formed along flange portion 44 (see figure 7)s.Thereby battery can seal fully.
The further details of the structure of overlay area 59 and formation will be described with reference to figure 5A, 5B and 7.As mentioned above, extension 46 and 48 one of them or whole two can extend beyond sealing strip 51 to form overlay area 59.For simplicity, the example of having only extension 48 to extend beyond sealing strip 51 is described below,, the invention is not restricted to this example though be understandable that.
With reference to Fig. 5 A and 5B, overlay area 59 can be from sealing strip 51 along bag 50 forefoot area extend with first direction.And sealing strip 51 can be folding along first direction.Such structure can be by forming along first direction pulling overlay area 59 after forming sealing strip 51.With reference to Fig. 7, overlay area 59 can center on the outer surface of bag 50 and reel.Overlay area 59 can be extended around bag 50 with scheduled volume, described scheduled volume, for example, it can be the distance that part is crossed the forefoot area of bag 50, whole distance around bag 50, just cross the distance in distance, rear region and all territories, two lateral areas of forefoot area, perhaps surpass once around bag 50.
At last, with reference to Fig. 7, sealing strip 57 can be folded to cover the end surface (that is, the surface 55 among Fig. 6) of bag 50, and this surface can be corresponding to the minor face of recess 43.At this moment, folding sealing strip 57 can be strengthened the rear surface of bag 50, and end that can protective bag 50.
In the pouch-type battery according to the embodiment of the invention, when by aforesaid formation, bag can provide gratifying intensity.Correspondingly, the exterior material of core cell can form by the form of resin die, thus the upper and lower of having realized core cell, and need not to use hard container to encapsulate this core cell in addition.
Use under the situation of air chamber in initial charge and discharge process in the formation bag, described air chamber can form in the lower seal part (not shown) of bag.
Can place along the Width of forefoot area between two electrode nipples 37 and 38 at the sealing strip on the forefoot area of bag 50 51, and can be placed near the center or center of bag 50 forefoot area.
Such design can show advantage to device manufacturers, and reason is the design owing to pouch-type battery, and two narrow side surfaces of bag 50 can be curves; And correspondingly, Electrical and Electronic equipment for example may be installed the mobile phone of described pouch-type battery, can optimisedly utilize the battery size after reducing, and/or utilizes the capacitance of the per unit volume battery that strengthens.That is to say, because the cross section of the electrode assemblie 30 in the bag 50 can be oval, the narrow side surface of bag 50 can be similar shaped form, and the inside of bag 50 can fully be filled by electrode assemblie 30, i.e. wasting space not so just may increase the capacitance of per unit volume battery.
Below, with reference to Fig. 8 and Fig. 9 A-9C further embodiment of the present invention is described.Fig. 8 has described the perspective view according to the bag of the embodiment of the invention, and Fig. 9 A-9C has described the vertical view at the possibility of the seal operation of bag among Fig. 8.
With reference to Fig. 8, pouch-type battery can form by the bag material 840 that is configured to fold is provided.Bag material 840 can comprise layer 111,112 and 113, and these layers can be respectively improvement polyethylene fused layers, metal core and nylon or PET separator.
With reference to Fig. 8 and Fig. 9 A, anterior 840a can be folded and cover rear portion 840b, in electrode assemblie is encapsulated in.Thereby the joint of electrode assemblie 37 and 38 can extend cross flange portion 842 be exposed to the bag the outside.
With reference to Fig. 9 A, the zone of adjoining the anterior 840a of recess 843 and rear portion 840b for example can use heat to melt process and sealed together and then sealing bag.Therefore, sealing strip 851 forms along three sides of recess 843 like this, and the 4th side is sealed in the bag material 840 inherently by folding.Because the sealing of bag material 840, each in the extension 846 and 848 can have corresponding two-layer with the anterior 840a and the rear portion 840b of bag material 840 respectively.
Two extensions 846 and 848 can longitudinally form, even like this owing to fusion has applied external pressure, also can not come out as the part of the polyolefin layer of the interior layer of bag material 840, and external appearance just become good like this.In addition, the thickness of polyolefin layer is not restricted yet, and has just formed firm bonding part like this in polyolefin layer cooling hardening.
When fusing shown in Fig. 9 A, at least one in the extension 846 and 848 can coat whole bag.So just can help to protect battery opposing exterior vibration, thereby the reliability of pouch-type battery is improved.Because battery can be protected and do not need extra hard container, just can reduce the thickness of integral battery door, and satisfy user's various demands.In addition, because the desired zone of sealing can still less just can increase the capacity of battery.
Fig. 9 B has provided the another kind of selection scheme that is used for sealed picture 8 pouch-type batteries.With reference to Fig. 8 and Fig. 9 B, anterior 840a and second 840b can for example use the heat fused process and fuse together most ofly and form sealing area 851 and additional seal zone 951, and need not fuse the fold domain 952 that bag material 840 will be folded part.That is to say that fold domain 952 can avoid being fused, like this or all coatings easily that do not hardened in fold domain 952 and whole bag can be extended in the zone 846 and 848.Sealing area 851 can be cooled and harden, thereby can help to protect pouch-type battery opposing exterior vibration.
Fig. 9 C has described the another kind of selection scheme that is used for sealed picture 8 pouch-type batteries.With reference to Fig. 8 and Fig. 9 C, elongated area 846 and 848 can for example be used the heat fused process and intactly is sealed, and, in case cooling, thus the sealing area of heat fused 951 can hardening be protected packaged electrode assemblie opposing exterior vibration.As mentioned above, elongated area 846 and 848 can form the covering jacket of reeling around bag, to strengthen the opposing of pouch-type battery to exterior vibration.
Hereinafter, describe further embodiment of the present invention in detail with reference to Figure 10.With reference to Figure 10, recess 1043 can be formed at a part of 1040a of bag material, and corresponding concave part 1063 can be formed among a part of 1040b of bag material.Recess 1043 and 1063 can be roughly symmetry and can have the identical degree of depth.Two corresponding concave part 1043 and 1063 are encapsulated electrode assembly 30 roughly.Though the recess 1043 and 1063 shown in the cross section shown in Figure 10 has corner, but be understandable that, bag material 1040a and 1040b can closely be pulled in together around electrode assemblie 30, thereby make the side of recess 1043 and 1063 fit tightly the external shape of electrode assemblie 30.Correspondingly, recess 1043 and 1063 can have the fillet side of the rounded end of matched electrodes assembly 30.That is to say, can reduce the degree of depth of recess 1043 and 1063 by the degree of depth during the restriction distraction procedure, thereby bag material 1040a and 1040b are tightened up and cause them to fit tightly electrode assemblie 30 like this, and then reduce or eliminated the wasting space in the bag and strengthened the capacity of per unit volume battery.Alternatively or additionally, recess 1043 or 1063 can initially form with curvilinear surface, and is described in conjunction with Fig. 4 as mentioned.Two extensions 1046 and 1048 can be to extend from recess 1043 and 1063 with the similar mode of previous embodiment.
Hereinafter, will describe an alternative embodiment of the invention in detail in conjunction with Figure 11 A-11E.With reference to Figure 11 A, electrode assemblie 30 can be inserted in the recess 1143.With reference to Figure 11 B, two extensions 1146 and 1148 can fuse with the forefoot area along bag in bag material 1140 and form sealing strip 1151.With reference to Figure 11 C, two extensions 1146 and 1148 can be folded to form the cover part to coat described bag along first direction.Can cover shorter extension such as the longer extension of extension 1148 such as extension 1146.Extension 1146 and 1148 can be folded, and feasible shorter extension such as extension 1146 folds back on himself.With reference to Figure 11 D, the cover part, just extension 1146 and 1148 extends beyond the zone of sealing 1151, can coat whole bag one or many.The end of longer extension, the end of extension 1148 for example can be aligned in the sealing strip 1151 on the forefoot area of bag.With reference to Figure 11 E, the cover part can be adhered to the surface of bag after the whole bag of reeling.In other carry into execution a plan (not shown), the end of longer elongated area, for example the end of extension 1148 can adhere to the basal surface of recess, perhaps adheres to any one side surface, or the like.Can use for example hot pressing, sealing strip wait carry out bonding.
Describe another embodiment of the present invention in detail now with reference to Figure 12, Figure 12 has described the cutaway view of the pouch-type battery with reinforcement feature.With reference to Figure 12, reinforcement feature 1276 be set at the bag four side surfaces at least one side surface on.Reinforcement feature 1276 can be formed by for example metal sheet, the metal sheet that is coated with binding resin, optical fiber fortified resins and insulating tape or the like.For example, reinforcement feature 1276 can be attached to the outer surface of bag by thermocompression bonded, and binding resin is got involved between reinforcement feature 1276 and bag.If reinforcement feature 1276 uses insulating tape bonding, then can adopt other processes.
After the top of resin die or extra cover and protective circuit plate or bottom were connected, the pouch-type battery of making as mentioned above can be directly with acting on for example battery of PDA(Personal Digital Assistant).
Pouch-type battery according to the embodiment of the invention can be used as lithium secondary battery.Be different from the pouch-type battery that tradition forms, can have a bag sidewall narrow, curve according to the pouch-type battery of the embodiment of the invention and come the hold electrodes assembly with square-shaped recess.Like this, can easily be installed in the Electrical and Electronic equipment, comprise in those Electrical and Electronic equipment that are designed to curve according to the pouch-type battery of the embodiment of the invention.
In addition, when the narrow sidewall of bag is curve, because wasting space ground does not hold the electrode assemblie with oval cross section, and owing to be placed in configuration on the narrow side surface of bag than the hermetic unit of bag, can reduce the width of bag, therefore just can increase the battery capacity of per unit volume battery.
In addition, owing to can then can reduce and inject the time that electrolyte spent directly with the front portion or the rear portion of electrolyte injecting electrode assembly.
Exemplary embodiment of the present invention is disclosed at this, though adopted specific term, these terms only with common used with descriptive understanding and be about to obtain explain, and be not intended to limit.Correspondingly, it will be appreciated by one skilled in the art that under the prerequisite of the spirit and scope of the present invention of in not breaking away from following claims, setting forth, can carry out multiple transformation at form and details.
Claims (20)
1, a kind of pouch-type battery comprises:
Bag, it comprises forefoot area, rear region, territory, first and second lateral areas and covering jacket, wherein:
Territory, described first lateral areas is connected to described rear region at the first side place of described battery with described forefoot area, and territory, described second lateral areas is connected to described rear region at the second side place of described battery with described forefoot area, described first side and described second side toward each other,
Described rear region wherein has the recess of hold electrodes assembly, and
Extend from first and second sides of described recess two extensions, reeled to form described territory, first and second lateral areas and described forefoot area in described two extensions, described two extensions towards interior surface by bonded to each other in described forefoot area, to form first sealing strip, in the described extension at least one extends beyond described first sealing strip and further reels forming described covering jacket, thereby described covering jacket is extended at least in part across described forefoot area.
2, pouch-type battery according to claim 1, wherein:
Described covering jacket is extended from described first sealing strip along first direction and across described forefoot area,
One in described two extensions is shorter extension, its described relatively first sealing strip has extended beyond first length, in described two extensions another is longer extension, its described relatively first sealing strip has extended beyond second length, described second length is greater than described first length, and
Described longer extension covers described shorter extension, in described covering jacket, and the surface outward of facing described shorter extension towards interior surface of described longer extension.
3, pouch-type battery according to claim 1, the electrode assemblie that further comprises the described bag inside that is positioned in the described recess, described electrode assemblie comprises first and second electrodes, described first and second electrodes have intervenient separator, described first electrode has first electrode nipple that extends from wherein, and described second electrode has second electrode nipple that extends from wherein.
4, pouch-type battery according to claim 3 further comprises: from two flange portions that the upside of described recess and downside extend, described upside and downside toward each other, wherein:
Described flange portion is adhered to described extension forming sealing strip and lower seal bar,
Thereby described electrode nipple is given prominence to the outside that extends to described bag from described electrode assemblie by the described sealing strip of going up, and
Described lower seal bar folds facing to the downside of described recess.
5, pouch-type battery according to claim 1, wherein said first sealing strip is along described forefoot area longitudinal extension and generally be placed in the center of described forefoot area.
6, pouch-type battery according to claim 1, the curved shape in the side of wherein said recess.
7, pouch-type battery according to claim 6 further comprises the electrode assemblie that places described recess, and the curvature that the shaped form side of wherein said recess is had is roughly the same with the curvature of the corresponding outer surface of described electrode assemblie.
8, pouch-type battery according to claim 1, wherein said covering jacket extend and fully across described forefoot area, described rear region, described territory, first lateral areas and territory, described second lateral areas.
9, pouch-type battery according to claim 8, wherein said covering jacket is extended at least once around described battery.
10, pouch-type battery according to claim 1, wherein said two extensions have multilayer, described multilayer comprises the surface outward that nylon is made, polyolefin resin make towards interior surface and at described surface and internal layer between interior surface outward, described internal layer is a thin metal film.
11, pouch-type battery according to claim 1, wherein:
Described bag comprises and contains the rear surface that is defined in described recess wherein, and described two extensions are formed by described rear surface, and the flange portion of described rear surface extends from the 3rd side of described recess,
Described bag comprises front surface, and described front surface comprises: first, and it extends across described recess; With the circumference part, it is towards described flange portion and described extension,
Described circumference part seals to described flange portion,
Described circumference part seals to described two extensions, thereby forms two laps,
Described two laps are reeled forming described territory, first and second lateral areas and described forefoot area,
Described two laps by bonded to each other forming described first sealing strip, and
The part of at least one of described two laps extends beyond described sealing strip to form described covering jacket.
12, pouch-type battery according to claim 11, an end of wherein said covering jacket adheres to the zone below the described bag.
13, pouch-type battery according to claim 11, wherein said first surface and described second surface are intactly formed by the bag material parts near doubling.
14, pouch-type battery according to claim 11, wherein said front surface comprises second recess, described front surface and described rear surface are symmetrical.
15, pouch-type battery according to claim 11, wherein said lap comprises unencapsulated zone, partly not to the sealing of described two extensions, this non sealed regions is corresponding to the zone that is folded of described covering jacket at the described circumference of this location.
16, pouch-type battery according to claim 11 further comprises placing between described recess and the described covering jacket and/or the reinforcement feature between described first and the described covering jacket.
17, a kind of manufacture method of pouch-type battery comprises:
Bag is provided, is formed with recess in this bag;
In described recess, place electrode assemblie;
Circumference along described recess forms sealing strip;
Two extensions of extending of reeling from described recess around described bag, and come to form second sealing strip along the forefoot area of described bag with described extension is bonded to each other; And
Further around reel in the described extension at least one of described bag, thereby form the covering jacket that covers described forefoot area at least in part.
18, method according to claim 17, further be included in when reeling described extension around described bag and apply predetermined tension force to described extension, described predetermined tension force enough causes the fit external shape of described electrode assemblie of described extension.
19, method according to claim 18 comprises that further end with described covering jacket adheres to the zone below the described bag.
20, method according to claim 19, the end of wherein said covering jacket are adhered to the following zone of contiguous described second sealing strip of described bag.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2005-0134562 | 2005-12-29 | ||
| KR1020050134553A KR100824897B1 (en) | 2005-12-29 | 2005-12-29 | Pouch type Battery and Method of Forming th Same |
| KR10-2005-0134553 | 2005-12-29 | ||
| KR1020050134553 | 2005-12-29 | ||
| KR1020050134562 | 2005-12-29 | ||
| KR1020050134562A KR100778982B1 (en) | 2005-12-29 | 2005-12-29 | Pouch case and pouch type secondary battery employing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1992380A true CN1992380A (en) | 2007-07-04 |
| CN1992380B CN1992380B (en) | 2011-12-28 |
Family
ID=38214421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101682569A Expired - Fee Related CN1992380B (en) | 2005-12-29 | 2006-12-28 | Pouch-type battery and method of making the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100778982B1 (en) |
| CN (1) | CN1992380B (en) |
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| CN102208673A (en) * | 2010-03-30 | 2011-10-05 | 三星Sdi株式会社 | Pouch type secondary battery and the fabrication method thereof |
| CN103066218A (en) * | 2011-10-24 | 2013-04-24 | 索尼电子(无锡)有限公司 | Battery, battery core container forming method and electronic equipment |
| CN104332570A (en) * | 2013-07-22 | 2015-02-04 | 新普科技股份有限公司 | Packaging structure of battery module |
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| CN110048032A (en) * | 2015-06-29 | 2019-07-23 | Sk新技术株式会社 | Secondary cell and preparation method thereof |
| CN112117499A (en) * | 2020-09-30 | 2020-12-22 | 珠海冠宇电池股份有限公司 | Battery and method for manufacturing battery |
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| KR101384901B1 (en) * | 2007-10-15 | 2014-04-16 | 삼성에스디아이 주식회사 | Pouch type Battery |
| KR101442854B1 (en) * | 2009-02-27 | 2014-09-23 | 주식회사 엘지화학 | Pouch type secondary battery |
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| KR102158146B1 (en) * | 2016-10-04 | 2020-09-21 | 주식회사 엘지화학 | Rechargeable battery and the manufacturing method |
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| CN1138309C (en) * | 1997-03-19 | 2004-02-11 | 旭化成株式会社 | Nonaqueous thin battery |
| CN100353584C (en) * | 1999-04-08 | 2007-12-05 | 大日本印刷株式会社 | meterial for packaging cell, bag for packaging cell, and its production method |
| JP2001102090A (en) | 1999-09-30 | 2001-04-13 | Mitsubishi Electric Corp | Fabrication method of plate type cell |
| TWI300637B (en) * | 2002-09-27 | 2008-09-01 | Sony Corp | Battery pack and method for producing same |
| KR20040107868A (en) * | 2003-06-14 | 2004-12-23 | 삼성에스디아이 주식회사 | Pouched-type lithium secondary battery |
| US7556885B2 (en) * | 2003-11-14 | 2009-07-07 | Sony Corporation | Battery pack |
| KR100686817B1 (en) * | 2005-03-28 | 2007-02-26 | 삼성에스디아이 주식회사 | Pouch type Li Secondary Battery and Method of fabrcating the same |
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- 2005-12-29 KR KR1020050134562A patent/KR100778982B1/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20070071251A (en) | 2007-07-04 |
| KR100778982B1 (en) | 2007-11-22 |
| CN1992380B (en) | 2011-12-28 |
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