CN102315421B - Ultrathin polymer lithium ion battery and preparation method thereof - Google Patents
Ultrathin polymer lithium ion battery and preparation method thereof Download PDFInfo
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- CN102315421B CN102315421B CN201110252610.7A CN201110252610A CN102315421B CN 102315421 B CN102315421 B CN 102315421B CN 201110252610 A CN201110252610 A CN 201110252610A CN 102315421 B CN102315421 B CN 102315421B
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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
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Abstract
The invention provides an ultrathin polymer lithium ion battery. The ultrathin polymer lithium ion battery comprises an electrical core, an anode plate coating and a cathode plate coating which are arranged in the electrical core are respectively provided with an anode material layer and a cathode material layer, and surfaces of the anode material layer and the cathode material layer are respectively coated with a layer of a polymer film; and polar extracting belts of the anode and the cathode which are respectively arranged at one end of the anode plate coating and the cathode plate coating are connected with the anode plate coating and the cathode plate coating, and a layer of an isolation film is arranged between the anode plate coating and the cathode plate coating. The ultrathin polymer lithium ion battery disclosed in the invention has the advantages of small volume, reasonable structure of the design of the anode plate coating and the cathode plate coating, and improvement of the cycle performance and the stability of the battery, the electrical core has a good liquid leakage-proof effect because of a thin packaging film and a seal belt, and simultaneously the battery can be directly communicated with an electronic product without welding a tin component by adopting the integrated design of the anode plate coating and the polar extracting belt of the anode, and the cathode plate coating and the polar extracting belt of the cathode.
Description
Technical field
The present invention relates to battery technology field, specifically a kind of ultra-thin polymer lithium ion battery and preparation method thereof.
Background technology
Slimming design along with electronic product, therefore the build for electronics unit accessory requires more and more to focus on its microminiaturization, in electronic product, generally be designed with power supply, as notebook computer, mobile phone etc., its power supply is chargeable lithium ion electronics, based on lithium ion battery, it is strong that its steel aluminum hull shell has hardness, the features such as distortion difficulty is large, therefore in existing polymer Li-ion battery, thickness is less than the shell of microminiature capacity section lithium ion battery of 1.0mm in forming process, the difficulty of its manufacturing process is very big, the performance of battery is Shortcomings also, there is limitation in the development to ultrathin lithium ion battery.
Summary of the invention
For above the deficiencies in the prior art and defect, the object of the present invention is to provide a kind of ultra-thin polymer lithium ion battery.
The object of the invention is by realizing by the following technical solutions:
A ultra-thin polymer lithium ion battery, comprises battery core, is provided with positive and negative plate and films in described battery core, and this positive and negative plate is respectively arranged with positive and negative electrode material layer on filming, and the surface of this positive and negative electrode material layer is coated with respectively one layer of polymeric film; Anodal, negative pole polarity is drawn band and is separately positioned on one end that this positive and negative plate is filmed, and films and connects as one with this positive and negative plate, and this positive and negative plate is provided with one deck barrier film between filming.
As the preferred technical solution of the present invention, the thickness of described polymer film is 1～3um.
As the preferred technical solution of the present invention, described polymer film is pvdf membrane, PAAS film, PMMA film, PVP film, PVDF-HFP film or PEO film.
As the preferred technical solution of the present invention, described barrier film comprises one deck PP or PE film, and the two sides of this PP or PE film are coated with respectively one layer of polymeric film.
As the preferred technical solution of the present invention, the thickness of described polymer film is 1～3um.
As the preferred technical solution of the present invention, described polymer film is pvdf membrane, PAAS film, PMMA film, PVP film, PVDF-HFP film or PEO film.
As the preferred technical solution of the present invention, film positive pole, the negative pole polarity of one end of described positive and negative plate is drawn band place and is provided with CPP or PP band, and on filming, this positive and negative plate is provided with the packaging film of one deck environmental sealing, this packaging film draws band with anodal, negative pole polarity and band heat-sealing is integrated, and its thickness is less than 0.4mm.
The present invention also provides a kind of method of preparing above-mentioned ultra-thin polymer lithium ion battery, comprises the following steps:
A, positive pole, negative material are mixed into paste, are coated in respectively positive and negative plate and film above, on this positive and negative plate is filmed, form respectively a positive pole, negative electrode material layer, and this positive pole, negative electrode material layer are dried, rolled, it is solidified;
B, this positive and negative plate is filmed and carried out die-cutly, wherein, one end that this positive and negative plate is filmed is respectively equipped with positive pole, negative pole polarity is drawn band;
C, on the surface of this positive pole, negative electrode material layer, apply respectively one layer of polymeric material, form a polymer film;
D, between positive and negative plate is filmed, be provided with one deck barrier film, this barrier film comprises one deck PP or PE film, and the two sides of this PP or PE film are coated with respectively one layer of polymeric film;
E, by positive and negative plate film, the superimposed hot pressing of barrier film three is integrated, its hot pressing temperature is 55～80 ℃.
As the preferred technical solution of the present invention, the polymer film described in described c step and d step is PVDF, PAAS, PMMA, PVP, PVDF-HFP or PEO material, and the percentage of its copolymer content is 1～8%, and this polymer film thickness is 1～3um.
As the preferred technical solution of the present invention, after described e step, also comprise a step, removing positive and negative plate films and greasy dirt, dirt anodal, that negative pole polarity is drawn belt surface, in anodal, negative pole polarity, draw band place CPP or PP band are set, and the packaging film of one deck environmental sealing on filming, this positive and negative plate is set, and packaging film and anodal, negative pole polarity are drawn to band and band heat-sealing is integrated, its thickness is less than 0.4mm.
Compared with prior art, the disclosed ultra-thin polymer lithium ion battery of the present invention has less volume, the project organization that positive and negative plate is filmed is more reasonable, cycle performance and the stability of battery have been improved, by slim packaging film and band, make battery core there is good anti-liquid and leak effect, simultaneously, adopting positive and negative plate to film draws and is with integrated design with anodal, negative pole polarity, battery can be directly communicated with electronic product, do not need to weld again tin element, there is stronger practicality.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described:
Fig. 1 is the front schematic view of the battery core of a kind of ultra-thin polymer lithium ion battery of the present invention.
Fig. 2 is the exploded view of the battery core of a kind of ultra-thin polymer lithium ion battery of the present invention.
Fig. 3 is the front schematic view of a kind of ultra-thin polymer lithium ion battery integral body of the present invention.
Fig. 4 is the side diagram of a kind of ultra-thin polymer lithium ion battery of the present invention.
Fig. 5 is the exploded view of a kind of ultra-thin polymer lithium ion battery of the present invention.
Embodiment
Refer to Fig. 1 and Fig. 2, be respectively the front schematic view of battery core and the exploded view of battery core of a kind of ultra-thin polymer lithium ion battery of the present invention.
The main part that battery core 101 is this ultra-thin polymer lithium ion battery, in this battery core 101, be provided with positive plate film 102 with negative plate film 103, this positive plate film 102 with a negative plate corresponding positive electrode material layer 104 and the negative electrode material layer 105 of being provided with respectively of filming on 103, this positive electrode material layer 104 is coated with respectively one layer of polymeric film 106 with the surface of negative electrode material layer 105.
Anodal polarity is drawn with 107 and is drawn with 108 be separately positioned on that this positive plate films 102, negative plate is filmed one end of 103 with negative pole polarity, films and 102,103 connects as one with this positive and negative plate.Positive plate film 102 and negative plate film and be also provided with one deck barrier film 20 between 103, this barrier film 20 comprises one deck PP or PE film 109, the two sides of this PP or PE film 109 are coated with respectively one layer of polymeric film 110.
In the present embodiment, the polymer film 110 that the polymer films 106 that above-mentioned positive electrode material layer 104 and negative electrode material layer 105 surfaces arrange and the two sides of PP or PE film 109 apply can adopt PVDF(Kynoar) film, PAAS(Sodium Polyacrylate) film, PMMA(polymethyl methacrylate) film, PVP(polyvinylpyrrolidone) film, PVDF-HFP(Kynoar-hexafluoropropylene) film or PEO(polyethylene glycol oxide) film, the thickness of this polymer film 106,110 is comparatively preferred scheme between 1～3um.
Refer to Fig. 3, Fig. 4, Fig. 5, be respectively front schematic view, end view and the exploded view of a kind of ultra-thin polymer lithium ion battery integral body of the present invention.
This positive plate is filmed and 102 is drawn and be with 107,108 places to be provided with CPP or PP band 111 with film positive pole, the negative pole polarity of 103 one end of negative plate, and film and 102 film and be provided with the slim packaging film 112 of one deck environmental sealing on 103 outer surface with negative plate at this positive plate, this packaging film 112 and anodal, negative pole polarity draw be with 107,108 and band 111 heat-sealings be integrated, after heat-sealing, packaging film 112, anodal polarity draw be with 107 or negative pole polarity draw be with 108, band 111, three's thickness sum is less than 0.4mm.
A method of preparing above-mentioned ultra-thin polymer lithium ion battery, comprises the following steps:
Step 1: positive pole, negative material are mixed into paste, being coated in respectively positive plate films and 102 films on 103 with negative plate, at this positive plate, film and 102 film on 103 and form respectively a positive electrode material layer 104 and a negative electrode material layer 105 with negative plate, and this positive pole, negative electrode material layer 104,105 are dried, rolled, it is solidified.
Step 2: to this positive plate film 102 with negative plate film 103 carry out die-cut, by positive plate film 102 with negative plate 103 electrode plates that are cut into different model and specification of filming, wherein, this positive plate is filmed and 102 is respectively equipped with anodal polarity and draws and be with 107 to draw and be with 108 with negative pole polarity with film one end of 103 of negative plate, and this positive pole, negative pole polarity are drawn and is with 107,108 to film and 102,103 connect as one with anodal, negative plate respectively.
Step 3: apply respectively one layer of polymeric material on this positive electrode material layer 104 and the surface of negative electrode material layer 105, form a polymer film 106.
Step 4: positive plate film 102 and negative plate film and be provided with one deck barrier film 20 between 103, this barrier film 20 comprises one deck PP or PE film 109, the two sides of this PP or PE film 109 are coated with respectively one layer of polymeric film 110.
Step 5: positive plate is filmed and 102 film 103 with negative plate, 20 threes are superimposed for barrier film, at the temperature of 55～80 ℃, become battery core main body by upper and lower hot pressing compound suppressing.
Step 6: just removing, negative plate films 102, 103 with anodal, negative pole polarity is drawn and is with 107, the greasy dirt on 108 surfaces, dirt, at positive pole, negative pole polarity is drawn and is with 107, 108 places arrange CPP or PP band 111, and film and 102 film and be provided with the slim packaging film 112 of one deck environmental sealing on 103 outer surface with negative plate at this positive plate, this packaging film 112 is with anodal, negative pole polarity is drawn and is with 107, 108 and band 111 heat-sealing be integrated, after heat-sealing, packaging film 112, anodal polarity draw be with 107 or negative pole polarity draw and be with 108, band 111, three's thickness sum is less than 0.4mm.
The polymer film 110 that the polymer films 106 that above-mentioned positive electrode material layer 104 and negative electrode material layer 105 surfaces arrange and the two sides of PP or PE film 109 apply can adopt PVDF(Kynoar), PAAS(Sodium Polyacrylate), PMMA(polymethyl methacrylate), PVP(polyvinylpyrrolidone), PVDF-HFP(Kynoar-hexafluoropropylene) or PEO(polyethylene glycol oxide) material, the percentage of its copolymer content is 1～8%, and the thickness of this polymer film 106,110 is comparatively preferred scheme between 1～3um.
The foregoing is only preferred embodiment of the present invention, be not used for limiting practical range of the present invention; Every equivalence of doing according to the present invention changes and revises, and all by the scope of the claims in the present invention book, is covered.
Claims (2)
1. a ultra-thin polymer lithium ion battery, comprise battery core, it is characterized in that: in described battery core, be provided with positive and negative plate and film, this positive and negative plate is respectively arranged with positive and negative electrode material layer on filming, and the surface of this positive and negative electrode material layer is coated with respectively one layer of polymeric film; Anodal, negative pole polarity is drawn band and is separately positioned on one end that this positive and negative plate is filmed, and films and connects as one with this positive and negative plate, and this positive and negative plate is provided with one deck barrier film between filming;
Described barrier film comprises one deck PP or PE film, and the two sides of this PP or PE film are coated with respectively one layer of polymeric film;
Film positive pole, the negative pole polarity of one end of described positive and negative plate is drawn band place and is provided with CPP or PP band, and on filming, this positive and negative plate is provided with the packaging film of one deck environmental sealing, this packaging film draws band with anodal, negative pole polarity and band heat-sealing is integrated, and its thickness is less than 0.4mm;
The thickness of the polymer film that the two sides of the polymer film of the surface-coated of described positive and negative electrode material layer and described PP or PE film apply is 1～3 micron; The polymer film that the two sides of the polymer film of the surface-coated of described positive and negative electrode material layer and described PP or PE film apply is pvdf membrane, PAAS film, PMMA film, PVP film, PVDF-HFP film or PEO film.
2. a preparation method who prepares ultra-thin polymer lithium ion battery claimed in claim 1, is characterized in that, comprises the following steps:
A, positive pole, negative material are mixed into paste, are coated in respectively positive and negative plate and film above, on this positive and negative plate is filmed, form respectively a positive pole, negative electrode material layer, and this positive pole, negative electrode material layer are dried, rolled, it is solidified;
B, this positive and negative plate is filmed and carried out die-cutly, wherein, one end that this positive and negative plate is filmed is respectively equipped with positive pole, negative pole polarity is drawn band;
C, on the surface of this positive pole, negative electrode material layer, apply respectively one layer of polymeric material, form a polymer film;
D, between positive and negative plate is filmed, be provided with one deck barrier film, this barrier film comprises one deck PP or PE film, and the two sides of this PP or PE film are coated with respectively one layer of polymeric film;
E, by positive and negative plate film, the superimposed hot pressing of barrier film three is integrated, its hot pressing temperature is 55～80 ℃;
After described e step, also comprise a step, removing positive and negative plate films and greasy dirt, dirt anodal, that negative pole polarity is drawn belt surface, in anodal, negative pole polarity, draw band place CPP or PP band are set, and the packaging film of one deck environmental sealing on filming, this positive and negative plate is set, and packaging film and anodal, negative pole polarity are drawn to band and band heat-sealing is integrated, its thickness is less than 0.4mm;
Polymer film described in described c step and d step is PVDF, PAAS, PMMA, PVP, PVDF-HFP or PEO material, and the percentage of its copolymer content is 1～8%, and this polymer film thickness is 1～3 micron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110252610.7A CN102315421B (en) | 2011-08-30 | 2011-08-30 | Ultrathin polymer lithium ion battery and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110252610.7A CN102315421B (en) | 2011-08-30 | 2011-08-30 | Ultrathin polymer lithium ion battery and preparation method thereof |
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| CN102315421A CN102315421A (en) | 2012-01-11 |
| CN102315421B true CN102315421B (en) | 2014-08-20 |
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| CN102881861B (en) * | 2012-09-26 | 2015-08-19 | 中南大学 | A kind of high-temperature lithium ion battery anode slice |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581534A (en) * | 2003-08-07 | 2005-02-16 | 思凯德公司 | Battery separator and method of making same |
| CN200997422Y (en) * | 2006-09-27 | 2007-12-26 | 黄穗阳 | Ultra-thin bent polymer lithium-ion battery |
| CN101771175A (en) * | 2008-12-31 | 2010-07-07 | 深圳市海太阳实业有限公司 | Polymer lithium ion battery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2524380Y (en) * | 2001-11-14 | 2002-12-04 | 厦门宝龙工业股份有限公司 | Rechargeable polymer lithium ion button cell |
| CN2645250Y (en) * | 2003-07-30 | 2004-09-29 | 黑龙江中强能源科技有限公司 | Ultra-thin polymer lithium ion battery for miner's lamp |
| CN202259556U (en) * | 2011-08-30 | 2012-05-30 | 珠海汉格能源科技有限公司 | Ultra-thin polymer lithium ion battery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1581534A (en) * | 2003-08-07 | 2005-02-16 | 思凯德公司 | Battery separator and method of making same |
| CN200997422Y (en) * | 2006-09-27 | 2007-12-26 | 黄穗阳 | Ultra-thin bent polymer lithium-ion battery |
| CN101771175A (en) * | 2008-12-31 | 2010-07-07 | 深圳市海太阳实业有限公司 | Polymer lithium ion battery |
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