CN108336252A - A kind of solid state lithium battery encapsulating structure, lithium battery and its packaging method - Google Patents
A kind of solid state lithium battery encapsulating structure, lithium battery and its packaging method Download PDFInfo
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- CN108336252A CN108336252A CN201711371021.4A CN201711371021A CN108336252A CN 108336252 A CN108336252 A CN 108336252A CN 201711371021 A CN201711371021 A CN 201711371021A CN 108336252 A CN108336252 A CN 108336252A
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- lithium battery
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- 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 of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/124—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material having a layered structure
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- 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
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- 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
- H01M10/058—Construction or manufacture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
A kind of solid state lithium battery encapsulating structure, including folded barrier layer, barrier layer and the protective layer set, the barrier layer are PTEE films.A kind of solid state lithium battery, including lithium battery electric core and above-mentioned encapsulating structure, lithium battery electric core includes folded anode structure, solid electrolyte and the negative pole structure set, it is two opposite end faces to define the side of anode structure and negative pole structure far from solid electrolyte in the lithium battery electric core, lithium battery wicking surface between both ends of the surface is lithium battery electric core side, and the encapsulating structure is disposed around lithium battery electric core side.A kind of packaging method of solid state lithium battery, provides above-mentioned lithium battery electric core, sequentially forms barrier layer, barrier layer and protective layer to far from lithium battery electric core from close to lithium battery electric core in the lithium battery electric core side, the barrier layer is PTEE films.Technical solution provided by the present invention has compact structure, combines closely with lithium battery electric core, protects the superperformance of compatible lithium alloy.
Description
【Technical field】
The present invention relates to solid state lithium battery and its encapsulation technology field more particularly to a kind of solid state lithium battery encapsulating structure,
Lithium battery and its packaging method.
【Background technology】
Solid lithium battery is next-generation lithium battery technology, has specific capacity high, has extended cycle life, the spy having a safety feature
Point.Solid lithium battery has wide practical use in fields such as electric vehicle, 3C Products.
Cell package is to determine the committed step of lithium battery core performance.Because use material system and device architecture not
Together, the encapsulating material of traditional lithium battery, technique etc. cannot be applied on solid lithium battery device.Current existing aluminum plastic film
Packaging technology, there are encapsulating films combined with battery body it is not close, it is understood that there may be its cycle performance of air impact, and aluminum plastic film
Moieties can react with lithium metal or lithium alloy cathode.
【Invention content】
It is not close to overcome current encapsulating film to be combined with battery body, and the incompatible lithium metal of encapsulating film or lithium alloy
The problem of cathode.The present invention will provide a kind of solid state lithium battery encapsulating structure, lithium battery and its packaging method.
A kind of solid state lithium battery encapsulating structure, including folded barrier layer, barrier layer and the protective layer set, the barrier layer is
PTEE films.
Preferably, it is 25nm-110 μm that the PTEE films, which are PTEE film barrier layer thickness,.
Preferably, the barrier layer is aluminium film, and thickness is 25nm-110 μm.
Preferably, the barrier layer area is less than the barrier layer, and is all set on the barrier layer.
Preferably, the protective layer includes the one or more of polyamide material or polyester material, and thickness is 0.9 μm -110
μm。
Preferably, it is additionally provided with hot melt adhesive layer between the barrier layer and protective layer.
The present invention also provides a kind of solid state lithium batteries, it is characterised in that：Including lithium battery electric core and such as above-mentioned envelope
Assembling structure, the lithium battery electric core include the folded anode structure set, solid electrolyte and negative pole structure, define the lithium battery
The side of anode structure and negative pole structure far from solid electrolyte is two opposite end faces, the lithium battery between both ends of the surface in core
Battery core surface is lithium battery electric core side, and the encapsulating structure is disposed around lithium battery electric core side, the encapsulating structure include from
Close to lithium battery electric core to far from lithium battery electric core, barrier layer, barrier layer and the protective layer set is folded successively.
Preferably, the barrier layer is PTEE films, and thickness is 25nm-100 μm.
The present invention also provides a kind of packaging methods of solid state lithium battery, provide lithium battery electric core, the lithium battery electric core packet
The folded anode structure set, solid electrolyte and negative pole structure are included, anode structure and negative polarity node in the lithium battery electric core are defined
Side of the structure far from solid electrolyte is the two opposite end faces of lithium battery electric core, and the lithium battery wicking surface between both ends of the surface is lithium
Battery battery core side；
In the lithium battery electric core side barrier layer, resistance are sequentially formed to far from lithium battery electric core from close to lithium battery electric core
Interlayer and protective layer, the barrier layer are PTEE films.
Preferably, the barrier layer passes through magnetron sputtering by the compound pressure lithium battery electric core side of hot pressing, the barrier layer
Or coevaporation is formed on barrier layer, the protective layer is by hot pressing or is adhered on the barrier layer.
Compared with the existing technology, the solid lithium battery provided in the present invention, it is only necessary to which encapsulating structure is in lithium battery electric core side
Face encapsulates, you can realizes complete solid lithium battery, enormously simplifies lithium battery encapsulation, has not only saved lithium battery cost but also carried
Its high sealing performance.
Further, the blocking that the encapsulating structure of solid lithium battery provided by the present invention passes through selection PTEE films
Layer, effectively can be compatible with and protect lithium metal or lithium alloy cathode, effectively block lithium metal to exosmosis, protect and prolong
The service life of solid lithium battery is grown；Meanwhile by deposition of aluminum film barrier layer over the barrier layer, the external world is effectively obstructed
Moisture and oxygen enter inside solid lithium battery, and then destroy battery structure, protect and extend solid lithium battery
Service life；Meanwhile protective layer is set on aluminium film barrier layer with crossing, external force damage battery structure is effectively prevented, is had
Effect protects battery structure.
The packaging method of the solid lithium battery provided in the present invention, by lithium battery electric core surface hot pressing compound block
Layer effectively raises barrier layer compactness, while effective compatible and protection lithium metal or lithium alloy cathode, effective to stop
The service life of solid lithium battery is protected and extended to lithium metal to exosmosis；Further, pass through magnetic over the barrier layer
Control sputtering or vacuum evaporation deposition aluminium film barrier layer further enhance the compactness of barrier layer and barrier layer, and effective resistance
Enter inside solid lithium battery every extraneous moisture and oxygen, and then destroy battery structure, protects and extend and is all solid state
The service life of lithium battery；Further, by the hot pressing composite protection layer on aluminium film barrier layer, external force is effectively prevented
Battery structure is damaged, battery structure is effectively protected.It is appreciated that the encapsulation side of solid lithium battery provided by the invention
Method is to encapsulate lithium battery electric core in telecommunications surface layer-by-layer, it is seen that this packaging method institute solid lithium battery has compact structure, and
It combines closely in lithium battery electric core, can preferably protect lithium battery electric core.
【Description of the drawings】
Fig. 1 is a kind of structural schematic diagram of solid state lithium battery in the present invention.
Fig. 2 is a kind of encapsulating structure schematic diagram of solid state lithium battery in the present invention.
Fig. 3 is a kind of solid state lithium battery packaging method flow diagram of the present invention.
Fig. 4 is a kind of encapsulation process schematic diagram of solid state lithium battery packaging method of the present invention.
Fig. 5 is hydatogenesis barrier layer flow diagram schematic diagram in the present invention.
Fig. 6 is layer deposited isolating flow diagram in the present invention.
Fig. 7 is the flow diagram of hot pressing composite protection layer in the present invention.
【Specific implementation mode】
In order to make the purpose of the present invention, technical solution and advantage be more clearly understood, below in conjunction with attached drawing and embodiment,
The present invention will be described in further detail.It should be appreciated that described herein, specific examples are only used to explain the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1, the present invention provides a kind of solid state lithium batteries 10, include mainly lithium battery electric core 11 and encapsulation
Structure 12.The lithium battery electric core 11 includes the anode structure 111, solid electrolyte 112 and negative pole structure for stacking gradually setting
1113, now define the side of anode structure 111 and negative pole structure 113 far from solid electrolyte 112 in the lithium battery electric core
It is lithium battery electric core side 115 between both ends of the surface 114 for the two opposite end faces 114 of lithium battery electric core.
The encapsulating structure 12 is disposed around on 11 side 115 of lithium battery electric core, and the encapsulating structure 11 includes from close
11 side 115 of lithium battery electric core is arrived far from 11 side 115 of lithium battery electric core, folds the barrier layer 121 set, 122 and of barrier layer successively
Protective layer 123.
Specifically, the anode structure 111 includes positive collector electrode 1111 far from solid electrolyte 12 and close to solid
The positive electrode material layer 1112 of state electrolyte 12, the negative pole structure 113 include the negative collector electrode far from solid electrolyte 12
1131 and close to solid electrolyte 12 negative electrode material layer 1132.
The barrier layer 121 is PTEE film layers, and hot pressing is compound on 11 side 15 of the lithium battery electric core.It is led
It is used to protect lithium metal and lithium alloy in lithium battery electric core 11, prevents exosmosis on metal-lithium ion；It can be used for gluing
Tie 11 side 15 of the lithium battery electric core.It is 25nm-110 μm that the barrier layer 121, which presses thickness H1,；Further, the resistance
It can be 30nm-100 μm that barrier 121, which presses thickness H1 also,；Specifically, the barrier layer 121 press thickness H1 be specially 30nm,
50nm, 10 μm, any one of 90 μm or 100 μm.
The barrier layer 122 is aluminium film barrier layer 122, is mainly used for completely cutting off moisture and oxygen in external environment and enters
Lithium battery electric core 11, the aluminium film barrier layer 122 is by magnetron sputtering or hydatogenesis in the barrier layer 121 far from the lithium
On the surface of 11 side of battery battery core.Also, 122 area of aluminium film barrier layer is not more than the barrier layer 121 always, can be with
Understand, the aluminium film barrier layer 122 is not in direct contact always with lithium battery electric core 11.
122 deposition thickness H2 of the barrier layer is 25nm-110 μm；Further, 122 deposition thickness H2 of the barrier layer
It can also be 30nm-100 μm；Specifically, 122 deposition thickness H2 of the barrier layer be specially 30nm, 50nm, 10 μm, 90 μm or 100
Any one of μm.
The protective layer 123 is formed on surface of the barrier layer 122 far from the barrier layer 121, wherein main logical
The compound form of hot pressing is crossed to cover on 122 surface of the barrier layer, being mainly used for preventing external force hurt lithium battery electric core 11.
123 thickness H3 of the protective layer is 0.9 μm -110 μm；123 thickness H3 of the protective layer can also be 1 μm -100 μm；The protection
In concretely 1 μm, 10 μm, 90 μm or 100 μm of 123 thickness H3 of layer.
Further, main any, the polyamide material for including polyamide material and polyester material of protective layer 123
Mainly include polyamide, polyamide 6, poly- sebacic acid certain herbaceous plants with big flowers diamines, polyhexamethylene sebacamide, polycaprolactam or poly hexamethylene adipamide oneself two
Any one of amine is several.The polyester material includes mainly any one of PET film, PBT films or PAR films or several
Kind.
Further referring to Fig. 2, in some embodiments of the invention, between the protective layer 123 and barrier layer 122 also
Equipped with an adhesive layer 124, the adhesive layer 124 is hot melt adhesive layer 124, is mainly used for being bonded the protective layer 123 and described
Barrier layer 122.
Fig. 3 and Fig. 4 are please referred to, the present invention also provides a kind of packaging method of solid lithium battery, key step includes：
Step S10 provides a lithium battery electric core, includes mainly anode structure, the solid electrolyte for stacking gradually setting
And negative pole structure, it is lithium now to define the side of anode structure and negative pole structure far from solid electrolyte in the lithium battery electric core
The two opposite end faces of battery battery core, the lithium battery wicking surface between both ends of the surface are lithium battery electric core side.
Step S11, the hot pressing composite barrier on lithium battery electric core side, the barrier layer are PTEE films；
Step S12 forms barrier layer on surface of the barrier layer far from the lithium battery electric core；
Step S13 forms protective layer on surface of the barrier layer far from the barrier layer；Lithium electricity is completed through the above steps
Pond battery core encapsulation, and then form solid lithium battery.
In some specific embodiments of the present invention, a kind of packaging method of solid lithium battery, key step includes：
Step S10 provides a lithium battery electric core, includes mainly anode structure, the solid electrolyte for stacking gradually setting
And negative pole structure, it is lithium now to define the side of anode structure and negative pole structure far from solid electrolyte in the lithium battery electric core
The two opposite end faces of battery battery core, the lithium battery wicking surface between both ends of the surface are lithium battery electric core side.
Step S11, barrier layer is compounded to form on lithium battery electric core side by hot pressing, and the barrier layer is that PTEE is thin
Film, referring to Fig. 5, its specific steps includes：
Step S111 provides a prefabricated PTEE films；
Step S112, heats and softens above-mentioned PTEE films, and controlled at 320-350 DEG C, isothermal holding lithium battery
Core, and controlled at 80-180 DEG C；
Above-mentioned film layer hot pressing after softening is compound in the lithium battery electric core side in the isothermal holding by step S113
And the end face with side junction, and control pressure is 0.05-0.20Mpa；
Step S114, pressing time 8-18min；
Further referring to Fig. 6, step S12, directly magnetic control splashes on surface of the barrier layer far from the lithium battery electric core
It penetrates or hydatogenesis forms aluminium film barrier layer；
The step S12 specifically includes the step S121 and step S122 of independent parallel in two, passes through step S121 and step
Either step can all realize directly magnetron sputtering or evaporation on surface of the barrier layer far from the lithium battery electric core in rapid S122
Deposition forms aluminium film barrier layer.The step 121 is that magnetic control splashes directly on surface of the barrier layer far from the lithium battery electric core
It penetrates to form aluminium film barrier layer；The step 121 is directly to be evaporated in vacuo on surface of the barrier layer far from the lithium battery electric core
Form aluminium film barrier layer；
Specifically, step 121 includes：
Step 1211, magnetron sputtering device is provided, AL element targets are installed, the Al targets are circle, diameter
For 60-100mm；
Step 1212, vacuum degree is adjusted to (3.5-4.5) × 10-4Pa；
Step 1213, it is 1.8-2.2L/S to adjust Ar throughputs, and it is 1.6-1.8Pa to make operating pressure；
Step 1214, magnetron sputtering power density is adjusted to 5-17Kw/cm2；
Specifically, step 122 includes：
Step S1221 provides a vacuum evaporation equipment, a molybdenum boat or thallium boat heating source, installs AL element targets；
Step S1222 adjusts vacuum degree to (1.5-10) × 10-3Pa；
Step S1223 controls molybdenum boat or thallium boat temperature to 990-1010 DEG C；
Step S1224 adjusts deposition rate to 0.2-3.2nm/s；
Step S1225, control sedimentation time are 0.04-11 hours, deposition of aluminum film barrier layer.
Further referring to Fig. 7, step S13, the compound guarantor of hot pressing on surface of the aluminium film barrier layer far from the barrier layer
Sheath specifically includes：
Step S131 provides a prefabricated polyamide film or polyester film；
Step S132 heats polyamide film or polyester film, and controls 150-200 DEG C of temperature, make polyamide film or
Polyester film softens；
Electric core structure of lithium battery described in step S133, heating stepses S12 is to 80-120 DEG C, by the polyamide film after softening
Or polyester film, hot pressing is on surface of the barrier layer far from the barrier layer, hot pressing pressure 0.08-0.2Mpa；
Step S134, control pressing time are 5-15min.
In some embodiments of the invention, the step S13 can also be：
Step S131, a prefabricated polyamide film or polyester film are provided；
Step S132, a hot melt adhesive layer, hot melt adhesive thickness are coated on surface of the aluminium film barrier layer far from the barrier layer
Degree H4 is 5-20nm (further referring to Fig. 2)；
Step S133, polyamide film or polyester film are heated respectively, and controlling 150-200 DEG C of temperature keeps polyamide thin
Film or polyester film softening, 80-120 DEG C of hot melt adhesive layer of heating make its softening；
Step S134, by the polyamide film or polyester film after softening, hot pressing together on the hot melt adhesive layer after softening,
Hot pressing pressure is 0.08-0.2Mpa；
Step S135`, control pressing time are 5-15min.
In some specific embodiments of the present invention, a kind of packaging method of solid state lithium battery specifically includes：
Step S20 provides a lithium battery electric core, includes mainly anode structure, the solid electrolyte for stacking gradually setting
And negative pole structure, it is lithium now to define the side of anode structure and negative pole structure far from solid electrolyte in the lithium battery electric core
The two opposite end faces of battery battery core, the lithium battery wicking surface between both ends of the surface are lithium battery electric core side.
Step S21, barrier layer is compounded to form on lithium battery electric core side by hot pressing, and the barrier layer is that PTEE is thin
Film, specific steps include：
Step S211 provides a prefabricated PTEE films；
Step S212, heats and softens above-mentioned PTEE films, and controlled at 330 DEG C, isothermal holding lithium battery electric core, and
Controlled at 150 DEG C；
Step S213, by the PEI film layers after softening be pressed on lithium battery electric core side in the isothermal holding and with
On the end face of side junction, and control pressure is 0.15Mpa；
Step S214, pressing time 15min；
Step S22, magnetron sputtering formation thickness is on surface of the PTEE film barrier layers far from the lithium battery electric core
The aluminium film barrier layer of 10nm, specifically includes：
Step 221, magnetron sputtering device is provided, installs AL element targets, the Al targets are circle, a diameter of
60mm；
Step 122, vacuum degree is adjusted to 4.0 × 10-4Pa；
Step 123, it is 2.0L/S to adjust Ar throughputs, and it is 1.7Pa to make operating pressure
Step 124, magnetron sputtering power density is adjusted to 5Kw/cm2；
Step S23, it is compound by sol layer hot pressing on surface of the aluminium film barrier layer far from the PEI film barrier layers
Polyamide 6 thinfilm protective coating, specific steps include：
Step S231 provides a prefabricated polyamide 6 film layer；
Step S232 coats a hot melt adhesive layer on surface of the aluminium film barrier layer far from the PEI film barrier layers, hot melt
Bondline thickness is 10nm；
Step S233 heats prefabricated polyamide 6 film layer, and controlling temperature keeps prefabricated polyamide 6 film layer soft to 160 DEG C
Change, heats hot melt adhesive layer, and control 100 DEG C of temperature to make its softening；
Step S234, by the prefabricated polyamide 6 film hot-pressing after softening together in forming polyamides on the hot melt adhesive layer after softening
6 film layer of amine, hot pressing pressure 0.1Mpa；
Step S235, control pressing time are 10min.
In some specific embodiments of the present invention, a kind of packaging method of solid state lithium battery specifically includes：
Step S30 provides a lithium battery electric core, includes mainly anode structure, the solid electrolyte for stacking gradually setting
And negative pole structure, it is two now to define the side of anode structure and negative pole structure far from solid electrolyte in the lithium battery electric core
Opposite end face, the lithium battery wicking surface between both ends of the surface are lithium battery electric core side.
Step S31, barrier layer is compounded to form on lithium battery electric core side by hot pressing, and the barrier layer is that PTEE is thin
Film, specific steps include：
Step S311 provides a prefabricated PTEE films；
Step S312, heats and softens above-mentioned PTEE films, and controlled at 330 DEG C, isothermal holding lithium battery electric core, and
Controlled at 150 DEG C；
Step S313, by the PEI film layers after softening be pressed on lithium battery electric core side in the isothermal holding and with
On the end face of side junction, and control pressure is 0.15Mpa；
Step S314, pressing time 15min；
Step S32, the hydatogenesis formation aluminium film resistance on surface of the PTEE film barrier layers far from the lithium battery electric core
Interlayer specifically includes：
Step S321 provides a vacuum evaporation equipment, a molybdenum boat heating source, and installs AL element targets；
Step S322 adjusts vacuum degree to 1.2 × 10-3Pa；
Step S323 controls molybdenum boat or thallium boat temperature to 1000 DEG C；
Step S324 adjusts deposition rate to 3.0nm/s；
Step S325, control sedimentation time are 10 hours, deposition of aluminum film barrier layer.
Step S33 passes through the compound PET of hot melt adhesive layer hot pressing on surface of the aluminium film barrier layer far from the barrier layers PTEE
Film layer specifically includes：
Step S331 provides a prefabricated PET film；
Step S332 coats a hot melt adhesive layer on surface of the aluminium film barrier layer far from the barrier layer, and coating thickness is
10nm；
Step S333 heats PET film, and controlling 150 DEG C of temperature makes PET film layer soften, and heats hot melt adhesive layer, and control
100 DEG C of temperature processed makes its hot melt adhesive layer soften；
Step S334, by the PET film layer after softening, together on the hot melt adhesive layer after softening, hot pressing pressure is for hot pressing
0.1Mpa；
Step S135, control pressing time are 10min.
In the another specific embodiment of the present invention, a kind of packaging method of solid state lithium battery specifically includes：
Compared with the existing technology, the solid lithium battery provided in the present invention, it is only necessary to which encapsulating structure is in lithium battery electric core side
Face encapsulates, you can realizes complete solid lithium battery, enormously simplifies lithium battery encapsulation, has not only saved lithium battery cost but also carried
Its high sealing performance.
Further, the blocking that the encapsulating structure of solid lithium battery provided by the present invention passes through selection PTEE films
Layer, effectively can be compatible with and protect lithium metal or lithium alloy cathode, effectively block lithium metal to exosmosis, protect and prolong
The service life of solid lithium battery is grown；Meanwhile by deposition of aluminum film barrier layer over the barrier layer, the external world is effectively obstructed
Moisture and oxygen enter inside solid lithium battery, and then destroy battery structure, protect and extend solid lithium battery
Service life；Meanwhile protective layer is set on aluminium film barrier layer with crossing, external force damage battery structure is effectively prevented, is had
Effect protects battery structure.
The packaging method of the solid lithium battery provided in the present invention, by lithium battery electric core surface hot pressing compound block
Layer effectively raises barrier layer compactness, while effective compatible and protection lithium metal or lithium alloy cathode, effective to stop
The service life of solid lithium battery is protected and extended to lithium metal to exosmosis；Further, pass through magnetic over the barrier layer
Control sputtering or vacuum evaporation deposition aluminium film barrier layer further enhance the compactness of barrier layer and barrier layer, and effective resistance
Enter inside solid lithium battery every extraneous moisture and oxygen, and then destroy battery structure, protects and extend and is all solid state
The service life of lithium battery；Further, by the hot pressing composite protection layer on aluminium film barrier layer, external force is effectively prevented
Battery structure is damaged, battery structure is effectively protected.It is appreciated that the encapsulation side of solid lithium battery provided by the invention
Method is to encapsulate lithium battery electric core in telecommunications surface layer-by-layer, it is seen that this packaging method institute solid lithium battery has compact structure, and
It combines closely in lithium battery electric core, can preferably protect lithium battery electric core.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all originals in the present invention
Any modification made by within then, equivalent replacement and improvement etc. should all include within protection scope of the present invention.
Claims (10)
1. a kind of solid state lithium battery encapsulating structure, it is characterised in that：Including the folded barrier layer set, barrier layer and protective layer are described
Barrier layer is PTEE films.
2. solid state lithium battery encapsulating structure as described in claim 1, it is characterised in that：The PTEE film barriers layer thickness is
25nm-110μm。
3. solid state lithium battery encapsulating structure as described in claim 1, it is characterised in that：The barrier layer is aluminium film, and thickness is
25nm-110μm。
4. solid state lithium battery encapsulating structure as claimed in claim 3, it is characterised in that：The barrier layer area is less than the resistance
Barrier, and be all set on the barrier layer.
5. solid state lithium battery encapsulating structure as described in claim 1, it is characterised in that：The protective layer includes polyamide material
Or the one or more of polyester material, thickness are 0.9 μm -110 μm.
6. solid state lithium battery encapsulating structure as claimed in claim 5, it is characterised in that：Between the barrier layer and protective layer also
Equipped with hot melt adhesive layer.
7. a kind of solid state lithium battery, it is characterised in that：Including lithium battery electric core and as described in claim any one of 1-6
Encapsulating structure, the lithium battery electric core include the folded anode structure set, solid electrolyte and negative pole structure, define the lithium battery
The side of anode structure and negative pole structure far from solid electrolyte is two opposite end faces in battery core, the lithium electricity between both ends of the surface
Pond battery core surface is lithium battery electric core side, and the encapsulating structure is disposed around lithium battery electric core side, and the encapsulating structure includes
From close to lithium battery electric core, to far from lithium battery electric core, barrier layer, barrier layer and the protective layer set is folded successively.
8. solid state lithium battery as claimed in claim 7, it is characterised in that：The barrier layer is PTEE films, and thickness is
25nm-100μm。
9. a kind of packaging method of solid state lithium battery, it is characterised in that：Lithium battery electric core is provided, which includes folded set
Anode structure, it is separate to define anode structure and negative pole structure in the lithium battery electric core for solid electrolyte and negative pole structure
The side of solid electrolyte is the two opposite end faces of lithium battery electric core, and the lithium battery wicking surface between both ends of the surface is lithium battery
Core side；
In the lithium battery electric core side barrier layer, barrier layer are sequentially formed to far from lithium battery electric core from close to lithium battery electric core
And protective layer, the barrier layer are PTEE films.
10. a kind of packaging method of solid state lithium battery as claimed in claim 9, it is characterised in that：The barrier layer passes through heat
Pressure is compound in lithium battery electric core side, and the barrier layer is formed in by magnetron sputtering or coevaporation on barrier layer, the protection
Layer is by hot pressing or is adhered on the barrier layer.
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| JP2000251852A (en) * | 1999-02-25 | 2000-09-14 | Mitsubishi Chemicals Corp | Nonaqueous secondary battery and its manufacture |
| JP2004303718A (en) * | 2003-03-14 | 2004-10-28 | Matsushita Electric Ind Co Ltd | Solid battery |
| CN203377273U (en) * | 2013-07-25 | 2014-01-01 | 中航锂电（洛阳）有限公司 | Lithium battery shell |
| CN206432345U (en) * | 2016-12-07 | 2017-08-22 | 辉能（天津）科技发展有限公司 | A kind of solid battery core and the paper shell thin slice lithium ion battery containing the battery core |
| CN207719254U (en) * | 2017-12-19 | 2018-08-10 | 成都亦道科技合伙企业（有限合伙） | A kind of solid state lithium battery encapsulating structure and lithium battery |
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2017
- 2017-12-19 CN CN201711371021.4A patent/CN108336252A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000251852A (en) * | 1999-02-25 | 2000-09-14 | Mitsubishi Chemicals Corp | Nonaqueous secondary battery and its manufacture |
| JP2004303718A (en) * | 2003-03-14 | 2004-10-28 | Matsushita Electric Ind Co Ltd | Solid battery |
| CN203377273U (en) * | 2013-07-25 | 2014-01-01 | 中航锂电（洛阳）有限公司 | Lithium battery shell |
| CN206432345U (en) * | 2016-12-07 | 2017-08-22 | 辉能（天津）科技发展有限公司 | A kind of solid battery core and the paper shell thin slice lithium ion battery containing the battery core |
| CN207719254U (en) * | 2017-12-19 | 2018-08-10 | 成都亦道科技合伙企业（有限合伙） | A kind of solid state lithium battery encapsulating structure and lithium battery |
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