CN1841836A - Pouch type lithium secondary battery and method of fabricating the same - Google Patents
Pouch type lithium secondary battery and method of fabricating the same Download PDFInfo
- Publication number
- CN1841836A CN1841836A CNA200610071476XA CN200610071476A CN1841836A CN 1841836 A CN1841836 A CN 1841836A CN A200610071476X A CNA200610071476X A CN A200610071476XA CN 200610071476 A CN200610071476 A CN 200610071476A CN 1841836 A CN1841836 A CN 1841836A
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- Prior art keywords
- lithium secondary
- pouch
- secondary battery
- bag
- type lithium
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 64
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 230000001681 protective effect Effects 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 27
- 238000000465 moulding Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 24
- 239000012943 hotmelt Substances 0.000 claims description 18
- 230000002787 reinforcement Effects 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 239000004411 aluminium Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 claims description 6
- 229920001169 thermoplastic Polymers 0.000 claims description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 5
- -1 polypropylene Polymers 0.000 claims description 5
- 229920001155 polypropylene Polymers 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 206010037660 Pyrexia Diseases 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- 229920001971 elastomer Polymers 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000005060 rubber Substances 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 239000007774 positive electrode material Substances 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000011258 core-shell material Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 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
- 239000004952 Polyamide Substances 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
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000005025 cast polypropylene Substances 0.000 description 1
- 150000001786 chalcogen compounds Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 1
- IDBFBDSKYCUNPW-UHFFFAOYSA-N lithium nitride Chemical compound [Li]N([Li])[Li] IDBFBDSKYCUNPW-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000012536 packaging technology Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052718 tin Inorganic materials 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
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 238000004804 winding Methods 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
- 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
- H01M50/183—Sealing members
-
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention relates to a bag lithium secondary battery, which comprises a bag exposed battery with electrode element, an outer bag for containing said electrode element, and a muffle for coiling said battery. And the invention also relates to a production method, which comprises: forming bag lithium exposed battery by containing electrode element into outer bag; and using muffle to produce bag exposed battery into tubular shape; with said invention, it can install the secondary battery without installing frame independently; and coil the bag exposed battery into tubular shape via setting muffle; therefore, the invention can reduce the producing cost.
Description
Technical field
The present invention relates to a kind of lithium secondary battery and preparation method thereof, more particularly, relate to a kind of pouch-type lithium secondary battery (pouch type lithium secondary battery) but and the method for this pouch-type lithium secondary battery of preparation of simplified assembling process.
Background technology
Usually, in lithium secondary battery, the lithium base oxide is as positive electrode active materials, and carbon-based material is as negative active core-shell material.Lithium secondary battery can be divided into liquid electrolyte battery and polymer electrolyte battery according to electrolytical type.Liquid electrolyte battery is commonly referred to lithium ion battery, and polymer electrolyte battery is commonly referred to lithium polymer battery.In addition, lithium ion battery can be prepared into different shape, for example convoluted, polygonal and bag type.
In these batteries, pouch-type lithium secondary battery has outer bag, and this bag comprises metal forming and cover the multi-layer film of synthetic resin of metal foil layer.Because with the polygon that adopts heavier metal jacket (can) or convolutedly compare the weight that bag type lithium battery can significantly reduce battery, a bag type lithium battery has been used and has developed into lightweight lithium secondary battery gradually.
The conventional method of preparation pouch-type lithium secondary battery will briefly be described now.At first, electrode assemblie is placed on second side of outer bag with the space that is used for the hold electrodes assembly.Then, cover second side with outer bag first side, and the outer bag of sealing, thereby a bag type plain battery obtained.Next, will be connected to as the annex of protective circuit module and so on bag type plain battery so that a bag core members group (pouch core pack) to be provided, and bag core members group will be inserted in the battery housing (case), finally can obtain pouch-type lithium secondary battery.
Yet, according to traditional method for preparing pouch-type lithium secondary battery, need to use independent battery housing, therefore, preparation process is taken time longer.This fact has limited the output of pouch-type lithium secondary battery.
In addition, independent battery housing also makes the reduction of pouch-type lithium secondary battery cost be restricted.
Summary of the invention
The method that the purpose of this invention is to provide a kind of pouch-type lithium secondary battery and prepare this pouch-type lithium secondary battery adopts this method can simplify assembling (packing) technology.
According to an embodiment of the present invention, pouch-type lithium secondary battery comprises the bag type plain battery of the outer bag with electrode assemblie and hold electrodes assembly, and the sleeve part (sleeve member) of (winding) bag type plain battery of reeling.In one embodiment, sleeve part is by aluminium or stainless steel (steel-usestainless; SUS) metal forming that makes.
This battery also can comprise the charge/discharge that is used for the control electrode assembly and the protective circuit module of misoperation; wherein; this protective circuit module is electrically connected on the electrode assemblie at the first end place of bag type plain battery, and it has on the first surface of being located at the protective circuit module, be used for the input/output terminal to the electrode assemblie charge/discharge.
First moulding unit (molding unit) can also be set in Dai the first outside, be used for the first surface of covering protection circuit module and expose input/output terminal on the first surface be arranged on the protective circuit module simultaneously.Also second moulding unit can be set on Dai the second portion outside.First moulding unit can be made of the hot-melt resin as pattern of fever adhesive (thermal type adhesive) and so on.Hot-melt resin can comprise be selected from by the material that with the vinyl-vinyl acetate copolymer is base, be the material of base with the polyester, be the material of base with rubber and be material in the group formed of the material of base with polyurethane.
This battery also can comprise first and second insulation boards on first and second parts that lay respectively at electrode assemblie, and outer bag can comprise sandwich layer; Be formed on the thermoplastic layer on the sandwich layer; And be formed on insulation film below the sandwich layer.Sandwich layer can comprise aluminium, and thermoplastic layer can comprise the polypropylene of modification, and insulation film comprises nylon or PETG (PET).
Bag type plain battery to the small part outer surface and on the outer surface of bag type plain battery, reinforcement can be set, cause when being installed in pouch-type lithium secondary battery in electric device/electronic device, reinforcement can be in the face of the outside of electric device/electronic device.Reinforcement can be the flat board that is made by metal or plastics.
An execution mode for preparing the method for pouch-type lithium secondary battery comprises: by admitting electrode assemblie to form bag type plain battery in the bag outside; Adopt sleeve part to make bag type plain battery tubular.This execution mode can also comprise that the protective circuit module that will have input/output terminal on the first surface of protective circuit module is electrically connected on the electrode assemblie at the first end place of bag type plain battery; and on first side of bag type plain battery, form first moulding unit by the hot melt sleeve part; wherein, the first moulding unit covering protection circuit module exposes the input/output terminal that is formed on the protective circuit module simultaneously.
Another execution mode also comprises by the hot melt sleeve part form first moulding unit on sleeve part, and after forming bag type plain battery, reinforcement is affixed to bag type plain battery to the small part outer surface.
Description of drawings
Describe illustrative embodiments of the present invention in detail by the reference accompanying drawing, above-mentioned and other characteristics of the present invention and aspect will be more apparent.In the accompanying drawing:
Figure 1A is the perspective view of the pouch-type lithium secondary battery of an embodiment of the present invention;
Figure 1B is the cross-sectional view that dissects along Figure 1A center line A-A;
Fig. 1 C is the cross-sectional view that dissects along Figure 1A center line B-B;
Fig. 2 is the method flow diagram for preparing pouch-type lithium secondary battery according to an embodiment of the present invention;
Fig. 3 A to 3D is the method schematic diagram for preparing pouch-type lithium secondary battery of describing an embodiment of the present invention;
Fig. 4 is the cross-sectional view that another execution mode dissects along Fig. 1 center line B-B according to the present invention;
Fig. 5 is the method flow diagram that another execution mode prepares pouch-type lithium secondary battery according to the present invention.
Embodiment
Below, describe illustrative embodiments of the present invention in detail with reference to accompanying drawing, the wherein identical identical parts of Reference numeral representative.
Figure 1A is the perspective view of the pouch-type lithium secondary battery of an embodiment of the present invention; Figure 1B is the cross-sectional view that dissects along Figure 1A center line A-A; Fig. 1 C is the cross-sectional view that dissects along Figure 1A center line B-B.
With reference to Figure 1A to 1C, the pouch-type lithium secondary battery of an embodiment of the present invention comprises: bag type plain battery 200; Be used to control the protective circuit module 300 of bag charge/discharge of type plain battery 200; The sleeve part 400 of the bag type of reeling plain battery 200; And first and second moulding units 510 and 520 that form by melt process.
Bag type plain battery 200 comprises electrode assemblie 210 and admits the outer bag 220 of electrode assemblie 210.
Electrode assemblie 210 comprises first battery lead plate 211 with the coating that is made by one of positive electrode active materials and negative active core-shell material; Comprise second battery lead plate 212 with the coating that makes by the another kind in positive electrode active materials and the negative active core-shell material; And being arranged on separator 213 between first and second battery lead plates 211 and 212, this separator is used for preventing between first and second battery lead plates 211 and 212 short circuit and only allows lithium ion to pass through it.In addition, first electrode contact 214 that gets by aluminum be bonded on first battery lead plate 211 and outstanding predetermined length with as positive electrode contact pin.Similarly, second electrode contact 215 that makes by Ni be bonded on second battery lead plate 212 and outstanding predetermined length with as negative electrode contact pin.According to the present invention, first and second electrode contacts 214 and 215 material are not limited to above-mentioned material.Also can comprise be used to prevent first and second electrode contacts 214 and 215 and outer bag 220 between the insulation contact pin 216 of short circuit.In addition, first and second electrode contacts 214 and 215 stretch out the outside of outer bag 220 and are electrically connected on the protective circuit module 300.Moreover the two ends that also first and second insulation boards 217 and 218 can be arranged on electrode assemblie 210 contact with outer bag 220 to prevent electrode assemblie 210.
Active positive electrode material can be a chalcogen compound, for example, and as LiCoO
2, LiMn
2O
4, LiNiO
2, LiNi
1-xCo
xO
2(0＜x＜1) and LiMnO
2Deng and so on metal oxide.Negative electrode active material can be selected from the material in the group of being made up of carbon-based material, silicon, tin, tin oxide, compound ashbury metal, transition metal oxide, metal lithium nitride or lithium metal oxide.In one embodiment, positive electrode plate is made by aluminium, and negative electrode plate is made by copper material.Separator is made by polyethylene or polypropylene usually.Certainly, the present invention is not limited to above-mentioned material.
In an embodiment of the present invention, the outside of bag outside first and second electrode contacts 214 and 215 of pouch-type lithium secondary battery 100 stretch out on first side.
Referring again to Figure 1A-1C, protective circuit module 300 is set on first end of bag type plain battery 200 and is electrically connected on first and second electrode contacts 214 and 215 of electrode assemblie 210, with the charge/discharge in the control electrode assembly 210 with delay work.For example, when excessive electric current flow through electrode assemblie 210, protective circuit module 300 was cut off electric current.In addition, protective circuit module 300 has and is used for pouch-type lithium secondary battery is carried out charge/discharge and is positioned at input/output terminal 310 on the protective circuit module 300.Although not shown in the accompanying drawing, in protective circuit module 300, can comprise various protective circuits.
Sleeve part 400 is the tubulose around bag type plain battery 200.Sleeve part 400 not only can just be made tubulose in beginning, but also can be by centering on bag type plain battery coiling panel-like member or sheet shape piece and adopting adhesive that the two ends combination is made to prevent to get loose.In the present embodiment, the mechanical strength of sleeve part 400 is than the mechanical strength height of outer bag.In one embodiment, sleeve part 400 is made by the metal forming that is made of aluminium or stainless steel (SUS).
First and second moulding units 510 and 520 form by melt process is molded.First and second moulding units 510 and 520 can make sleeve pipe 400 have tubulose all the time.
In addition, the hot melt material that uses in first and second moulding units 510 and 520 is pattern of fever adhesive (thermal-type adhesive).In one embodiment, hot melt material is at high temperature melted, and by adopting non-volatile nonflammable thermoplastic resin anhydrous or solvent and 100% curing at room temperature that this hot melt material is coated on the adherend.Then, hot melt material is exerted pressure and make it the cooling or in seconds solidify to have viscosity.
The hotmelt that adopts in first and second moulding units 510 and 520 can be selected from by being the material of base with vinyl-vinyl acetate copolymer (EVA), being the material of base with the polyamide, being the material of base with the polyester, being the material of base with rubber and being material in the group formed of the material of base with polyurethane.
In addition, first moulding unit 510 can be made by the reel first of sleeve part 400 of bag type plain battery 200 of melt process by molded, and protective circuit module 300 can be installed on first moulding unit 510.In this case, the input/output terminal 310 of protective circuit module 300 is exposed on first moulding unit 510.
Similarly, form second moulding unit 520, so that pouch-type lithium secondary battery of the present invention 100 utilizes sleeve part 400 coiling bag type plain batteries 200.Because the second portion of pouch-type lithium secondary battery 100 is easier to be subjected to the injury from the outside, for example pierce through, second moulding unit 520 can be molded by melt process.
Fig. 2 is the method flow diagram of the preparation pouch-type lithium secondary battery of an embodiment of the present invention.
With reference to Fig. 2, the method for preparing pouch-type lithium secondary battery of the present invention's one illustrative embodiments comprises: S1) form bag type plain battery; S2) the protective circuit module is installed; S3) utilize sleeve part to make bag type plain battery tubular; And S4) first and second moulding units of hot melt sleeve part.
Fig. 3 A to 3D is with reference to the step schematic diagram of Fig. 2 in pouch-type lithium secondary battery preparation method's a execution mode.
At first, in the technology that forms bag type plain battery (S1), as shown in Figure 3A, electrode assemblie 210 is placed in the outer bag 220 with preparation bag type plain battery 200.
More particularly, preparation electrode assemblie 210 and outer bag 220 with the space of admitting electrode assemblie 210.
Then, electrode assemblie 210 is inserted the space of the admittance electrode assemblie 210 in the outer bag 220.In this case, first and second electrode contacts 214 and 215 of electrode assemblie 210 stretch out electrode assemblie 210 predetermined lengths.Suppose that first and second electrode contacts 214 and 215 extend along the first direction shown in the figure.
After admitting electrode assemblie 210, seal outer bag 220 with preparation bag type plain battery 200 by methods such as hot melts.
Although not shown, also first and second insulation boards can be affixed on first and second parts of electrode assemblie 210, contact with outer bag 220 to avoid electrode assemblie 210.
Form after the bag type plain battery 200, in the technology that the protective circuit module is installed (S2), protective circuit module 300 is electrically connected on first and second electrode contacts 214 and 215 that stretch out bag type plain battery 200.
In this case, protective circuit module 300 has the charge/discharge in the control electrode assembly 210 and the various protective circuits of misoperation, and it also comprises the input/output terminal 310 that is used for electrode assemblie 210 charge/discharges.
After being installed to protective circuit module 300 on bag type plain battery 200, utilize sleeve part that bag type plain battery is made (S3) in the tubular technology, adopting sleeve part 400 that bag type plain battery 200 is wound into tubulose.
In this embodiment, the mechanical strength of sleeve part 400 is than the mechanical strength height of outer bag 220.In one embodiment, sleeve part 400 is made by the metal forming as aluminium or stainless steel (SUS) and so on.
The technology (S2) of protective circuit module and the order of utilizing sleeve part that bag type plain battery is made tubular technology (S3) are installed are not limited to the above.As an alternative, can utilize sleeve part that bag type plain battery is made tubular technology (S3) in the technology (S2) that the protective circuit module is installed before.
After utilizing sleeve part 400 that bag type plain battery 200 is made the technology of tubulose; in the technology of hot melt first and second parts (S4); the first of bag type plain battery 200 that protective circuit module 300 is installed and the second portion that is in the first opposite of bag type plain battery 200 are carried out hot melting process; preparing first and second moulding units 510 and 520, thereby finally make pouch-type lithium secondary battery 100.
First is being carried out in the execution mode of hot melting process, the input/output terminal 310 of protective circuit module 300 is exposed to the outside.
In addition, because first and second parts of sleeve part 400 are carried out hot melting process, therefore can make the sleeve part 400 of the bag type plain battery 200 of reeling keep tubular.
As mentioned above, according to an embodiment of the present invention, encapsulating housing that need not be independent (package case) can encapsulate pouch-type lithium secondary battery.The substitute is, sleeve part 400 is set is wound into bag type plain battery tubular.As a result, can simplify packaging technology.
In addition, owing to assemble case (pack case) that need not be independent, therefore can reduce the preparation cost of pouch-type lithium secondary battery 100.
Fig. 4 is the cross-sectional view of another embodiment of the present invention, and it shows the cross section that has the pouch-type lithium secondary battery of the profile shown in Figure 1A when Figure 1A center line B-B dissects.
Fig. 5 is preparation method's flow chart of the pouch-type lithium secondary battery of another execution mode of the present invention.
With reference to Fig. 4, the pouch-type lithium secondary battery of second embodiment of the invention has and the aforementioned embodiments similar shapes.Yet, different with the cross-sectional view shown in Fig. 1 C, on the outer surface of bag, also be provided with reinforcement 500.More particularly, this bag has back plate (that is, admitting side) and header board, and back plate has the hollow bulb that is used to admit electrode assemblie 210, and header board is used to cover hollow bulb.When back plate (among Fig. 4 above) along periphery and header board (among Fig. 4 below one) when combining, independent reinforcement 500 can be affixed on the outer surface of header board of this bag.Reinforcement 500 can be flat board or the film of being made by metal or plastics, can have tack coat on its surface in the face of bag.
Whole secondary cell with above-mentioned bag type plain battery can be installed in the electric device in the side of reinforcement 500 mode in the face of the outside of electric device.In this case, the power even electric device is damaged, it is impaired that reinforcement 500 makes that outer surface can prevent with the shell bag and the sleeve part 400 together of electric device.As a result, can improve the fail safe of pouch-type lithium secondary battery.
With reference to Fig. 5, the preparation method of the pouch-type lithium secondary battery of another execution mode of the present invention also comprises: the technology P2 of the installation reinforcement 500 between the technology P3 of technology P1 that forms bag type plain battery and installation protective circuit module.Then, as shown in Figure 2, utilize sleeve part that bag type plain battery is made the technology P5 of tubular technology P4 and hot melt first and second parts, with the lithium secondary battery of last preparation an embodiment of the present invention.
As mentioned above,, can provide the method for a kind of pouch-type lithium secondary battery and this pouch-type lithium secondary battery of preparation, in the method, but not adopt independent assemble case simplified assembling process by adopting sleeve part according to the present invention.
Although specifically illustrated and described the present invention above with reference to illustrative embodiments, it will be appreciated by those skilled in the art that various forms and the conversion on the details done all will fall in claims restricted portion and the equivalency range thereof under the prerequisite that does not exceed design of the present invention and scope.
Claims (18)
1. pouch-type lithium secondary battery, it comprises:
Have electrode assemblie and outer bag the bag type plain battery that is used to admit electrode assemblie; And
The reel sleeve part of this bag type plain battery.
2. pouch-type lithium secondary battery according to claim 1, wherein, described sleeve part is the metal forming that is made by aluminium or stainless steel (SUS).
3. pouch-type lithium secondary battery according to claim 1; wherein; also comprise the charge/discharge that is used for the control electrode assembly and the protective circuit module of misoperation, this protective circuit module is electrically connected on the described electrode assemblie at the first end place of described bag type plain battery and has the input/output terminal to described electrode assemblie charge/discharge of being used on the first surface that is positioned at described protective circuit module.
4. pouch-type lithium secondary battery according to claim 3; wherein; also comprise first moulding unit in the first that is arranged on described outer bag, it is used to cover the first surface of described protective circuit module and exposes described input/output terminal on the first surface that is arranged on described protective circuit module simultaneously.
5. pouch-type lithium secondary battery according to claim 1 wherein, also comprises second moulding unit on the second portion that is arranged on described outer bag.
6. pouch-type lithium secondary battery according to claim 4, wherein, described first moulding unit is made of hot-melt resin.
7. pouch-type lithium secondary battery according to claim 6, wherein, described hot-melt resin is the pattern of fever adhesive.
8. pouch-type lithium secondary battery according to claim 7, wherein, described hot-melt resin comprise be selected from by the material that with the vinyl-vinyl acetate copolymer is base, be the material of base with the polyester, be the material of base with rubber and be material in the group formed of the material of base with polyurethane.
9. pouch-type lithium secondary battery according to claim 1 wherein, also comprises first and second insulation boards on first and second parts that are separately positioned on described electrode assemblie.
10. pouch-type lithium secondary battery according to claim 1, wherein, described outer bag comprises:
Sandwich layer;
Be formed on the thermoplastic layer above the described sandwich layer; And
Be formed on the insulation film below the described sandwich layer.
11. pouch-type lithium secondary battery according to claim 10, wherein,
Described sandwich layer comprises aluminium;
Described thermoplastic layer comprises the polypropylene of modification; And
Described insulation film comprises nylon or PETG (PET).
12. pouch-type lithium secondary battery according to claim 1 wherein, also comprises the reinforcement to the small part outer surface that is arranged on described bag type plain battery.
13. pouch-type lithium secondary battery according to claim 12, wherein, described reinforcement is the flat board that comprises metal or plastics.
14. a method for preparing pouch-type lithium secondary battery comprises:
By admitting electrode assemblie to form bag type plain battery in the bag outside; And
Adopt sleeve part to make described bag type plain battery tubular.
15. method according to claim 14, wherein, the protective circuit module that an end place that also is included in described bag type plain battery will have the input/output terminal on the first surface that is positioned at described protective circuit module is connected on the described electrode assemblie.
16. method according to claim 15; wherein; comprise also by the described sleeve part of hot melt on first side of described bag type plain battery, forming first moulding unit that this first moulding unit covers described protective circuit module and exposes the input/output terminal that is formed on the described protective circuit module simultaneously.
17. method according to claim 14 wherein, also comprises by the described sleeve part of hot melt forming first moulding unit on described sleeve part.
18. method according to claim 14, wherein, also be included in form behind the described bag type plain battery reinforcement is affixed on described bag type plain battery to the small part outer surface.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020050025542A KR100686818B1 (en) | 2005-03-28 | 2005-03-28 | Pouch type Li Secondary Battery and Method of fabrcating the same |
| KR25542/05 | 2005-03-28 | ||
| KR25543/05 | 2005-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1841836A true CN1841836A (en) | 2006-10-04 |
| CN100449856C CN100449856C (en) | 2009-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610071476XA Active CN100449856C (en) | 2005-03-28 | 2006-03-24 | Pouch type lithium secondary battery and method of fabricating the same |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100686818B1 (en) |
| CN (1) | CN100449856C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821411A (en) * | 2014-02-05 | 2015-08-05 | 三星Sdi株式会社 | Curved secondary battery and method of manufacturing the same |
| CN105594015A (en) * | 2013-09-30 | 2016-05-18 | 株式会社Lg化学 | Secondary battery pack comprising battery cells mounted on cartridge frame |
| CN110729507A (en) * | 2018-07-17 | 2020-01-24 | 宁德时代新能源科技股份有限公司 | Secondary battery and method for manufacturing secondary battery |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101442854B1 (en) * | 2009-02-27 | 2014-09-23 | 주식회사 엘지화학 | Pouch type secondary battery |
| KR101172230B1 (en) | 2009-11-27 | 2012-08-07 | 삼성에스디아이 주식회사 | Secondary battery and method for packing the same |
| KR101467630B1 (en) * | 2012-05-22 | 2014-12-01 | 주식회사 엘지화학 | Can-pouch combined type secondary battery |
| KR20150057819A (en) | 2013-11-20 | 2015-05-28 | 삼성에스디아이 주식회사 | Rechargeable battery |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4529207B2 (en) * | 1999-11-30 | 2010-08-25 | ソニー株式会社 | Non-aqueous electrolyte battery |
| US6515449B1 (en) * | 2001-11-21 | 2003-02-04 | Ngk Spark Plug Co., Ltd | Battery with lead/nugget protection insert |
| US7563535B2 (en) * | 2002-02-06 | 2009-07-21 | Sony Corporation | Battery pack with insulating film sheath material and method of producing the same |
| KR100858798B1 (en) * | 2002-06-17 | 2008-09-17 | 삼성에스디아이 주식회사 | Battery and method for making it |
| CN2580613Y (en) * | 2002-10-08 | 2003-10-15 | 王卫平 | Medium capacity single lithium ion cell |
| CN1411081A (en) * | 2002-11-15 | 2003-04-16 | 中信国安盟固利电源技术有限公司 | Flexible package liquid state lithium ion battery |
| US7348762B2 (en) * | 2003-05-01 | 2008-03-25 | Sony Corporation | Battery pack and method for producing battery pack |
-
2005
- 2005-03-28 KR KR1020050025542A patent/KR100686818B1/en not_active IP Right Cessation
-
2006
- 2006-03-24 CN CNB200610071476XA patent/CN100449856C/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105594015A (en) * | 2013-09-30 | 2016-05-18 | 株式会社Lg化学 | Secondary battery pack comprising battery cells mounted on cartridge frame |
| US10319962B2 (en) | 2013-09-30 | 2019-06-11 | Lg Chem, Ltd. | Secondary battery pack having battery cells mounted in cartridge frame |
| CN104821411A (en) * | 2014-02-05 | 2015-08-05 | 三星Sdi株式会社 | Curved secondary battery and method of manufacturing the same |
| CN104821411B (en) * | 2014-02-05 | 2020-04-10 | 三星Sdi株式会社 | Curved secondary battery and method of manufacturing the same |
| CN110729507A (en) * | 2018-07-17 | 2020-01-24 | 宁德时代新能源科技股份有限公司 | Secondary battery and method for manufacturing secondary battery |
| CN110729507B (en) * | 2018-07-17 | 2021-11-09 | 宁德时代新能源科技股份有限公司 | Secondary battery and method for manufacturing secondary battery |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100686818B1 (en) | 2007-02-26 |
| KR20060103693A (en) | 2006-10-04 |
| CN100449856C (en) | 2009-01-07 |
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