CN106207019A - 表面具有耐电解液聚酯层的锂电池软包装膜及其制备 - Google Patents
表面具有耐电解液聚酯层的锂电池软包装膜及其制备 Download PDFInfo
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- 239000012785 packaging film Substances 0.000 title claims abstract description 26
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 25
- 229920006280 packaging film Polymers 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 3
- 229920006015 heat resistant resin Polymers 0.000 claims abstract description 27
- 239000005030 aluminium foil Substances 0.000 claims abstract description 22
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 14
- 239000011230 binding agent Substances 0.000 claims description 13
- 239000011265 semifinished product Substances 0.000 claims description 6
- -1 polyethylene terephthalate Polymers 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 150000002148 esters Chemical class 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008961 swelling Effects 0.000 description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 229920003235 aromatic polyamide Polymers 0.000 description 1
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- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- H01M50/116—Primary casings; Jackets or wrappings 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
- H01M50/10—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
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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
- 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
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/752—Corrosion inhibitor
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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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Abstract
本发明提供了一种表面具有耐电解液聚酯层的锂电池软包装膜及其制备。所述的表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，包括从外到内依次设置的耐热性树脂层、铝箔芯层和热塑性树脂层，其中，所述的耐热性树脂层的外侧附有耐电解液聚酯层。本发明的表面具有耐电解液聚酯层的锂电池软包装膜中的耐热性树脂膜接触不到电解液，所以不会发生溶解和腐蚀，导致产品报废。
Description
技术领域
本发明涉及一种复合软包装膜，特别是一种表面具有耐电解液聚酯层锂电池软包装膜。
背景技术
在锂电池生产过程中，注液工序和二封工序容易产生电解液污染软包装膜表面情况。由于现有软包装膜表面为聚酰胺层不耐电解液，容易被电解液溶胀溶解，在生产时表面耐热性聚酰胺树脂薄膜接触电解液时会发生溶解和腐蚀，导致产品报废。
发明内容
本发明的目的是提供一种耐电解液的锂电池软包装膜。
为了达到上述目的，本发明提供了一种表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，包括从外到内依次设置的耐热性树脂层、铝箔芯层和热塑性树脂层，其中，所述的耐热性树脂层的外侧附有耐电解液聚酯层。
优选地，所述的耐电解液聚酯层的材质为聚对苯二甲酸乙二醇酯。
更优选地，所述的聚对苯二甲酸乙二醇酯的数均分子量为1000-100000，更优选20000-50000。
优选地，所述的耐电解液聚酯层的单位重量为0.1克每平方米到50克每平方米，更优选为5克每平方米到20克每平方米。
优选地，所述的耐热性树脂层与铝箔芯层之间通过粘合剂粘合，所述的铝箔芯层与热塑性树脂层之间通过粘合剂粘合，耐热性树脂层与耐电解液聚酯层之间通过粘合剂粘合。
本发明还提供了上述的表面具有耐电解液聚酯层的锂电池软包装膜的制造方法，其特征在于，包括：将铝箔芯层置于耐热性树脂层和热塑性树脂层之间并在耐热性树脂层与铝箔芯层之间以及铝箔芯层与热塑性树脂层之间施加粘合剂，采用干法复合或共挤出复合制得半成品膜；将半成品膜的耐热性树脂层面上施加粘合剂，采用干法复合或共挤出复合耐电解液聚酯层，得到表面具有耐电解液聚酯层的锂电池软包装膜。
与现有技术相比，本发明的有益效果是：
本发明的表面具有耐电解液聚酯层的锂电池软包装膜中的耐热性树脂膜接触不到电解液，所以不会发生溶解和腐蚀，导致产品报废。
附图说明
图1为表面具有耐电解液聚酯层的锂电池软包装膜结构示意图。
具体实施方式
下面结合具体实施例，进一步阐述本发明。应理解，这些实施例仅用于说明本发明而不用于限制本发明的范围。此外应理解，在阅读了本发明讲授的内容之后，本领域技术人员可以对本发明作各种改动或修改，这些等价形式同样落于本申请所附权利要求书所限定的范围。
实施例1
如图1所示，为表面具有耐电解液聚酯层的锂电池软包装膜结构示意图，所述的表面具有耐电解液聚酯层的锂电池软包装膜包括从外到内依次设置的耐热性树脂层1、铝箔芯层2和热塑性树脂层3，其中，所述的耐热性树脂层1的外侧附有耐电解液聚酯层4。所述的耐热性树脂层1与铝箔芯层2之间通过粘合剂5粘合，所述的铝箔芯层2与热塑性树脂层3之间通过粘合剂5粘合，耐热性树脂层1与耐电解液聚酯层4之间通过粘合剂5粘合。
所述的耐热性树脂层1选用上海紫东化工有限公司的尼龙6(聚酰胺)薄膜，厚度25微米。铝箔芯层2选用上海美铝有限公司的0态合金号为8011的铝箔，厚度45微米。热塑性树脂层3选用无锡环亚包装有限公司的流延聚丙烯薄膜，厚度45微米。耐电解液聚酯层4选用上海紫东化工有限公司的双向拉伸聚酯薄膜，厚度12微米，材质为聚对苯二甲酸乙二醇酯，数均分子量为20000-30000。粘合剂5选用北京高盟化工有限公司的YH3166/YH3166B双组分聚氨酯粘合剂，重量配比为10∶1.75，工作浓度为25wt％，涂布量为3克每平方米。耐电解液聚酯层4的单位重量为17克每平方米。
本发明还提供了上述的表面具有耐电解液聚酯层的锂电池软包装膜的制造方法，具体步骤为：
取25微米厚的耐热性树脂层1、45微米厚的铝箔芯层2和45微米厚的热塑性树脂层3，将铝箔芯层2置于耐热性树脂层1和热塑性树脂层3之间并在耐热性树脂层1与铝箔芯层2之间以及铝箔芯层2与热塑性树脂层3之间施加北京高盟化工有限公司的YH3166/YH3166B双组分聚氨酯粘合剂，使用日本富士FL2-110干式复合机进行复合制得半成品膜。
将半成品膜在日本富士FL2-110干式复合机上，采用北京高盟化工有限公司的YH3166/YH3166B双组分聚氨酯粘合剂在25微米厚的耐热性树脂层1面，复合厚度为12微米的耐电解液聚酯层4，得到表面具有耐电解液聚酯层的锂电池软包装膜。
在制得的锂电池软包装膜的表面滴1ml的1mol/L LiPF6电解液(溶剂为体积比为1∶1∶1的碳酸二甲酯、碳酸乙酯和碳酸二乙酯)，室温放置30天后观测这些软包装膜表面有无溶胀和溶解，结果显示没有发生溶胀和溶解。
Claims (6)
1.一种表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，包括从外到内依次设置的耐热性树脂层(1)、铝箔芯层(2)和热塑性树脂层(3)，其中，所述的耐热性树脂层(1)的外侧附有耐电解液聚酯层(4)。
2.如权利要求1所述的表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，所述的耐电解液聚酯层(4)的材质为聚对苯二甲酸乙二醇酯。
3.如权利要求1所述的表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，所述的聚对苯二甲酸乙二醇酯的数均分子量为1000-100000。
4.如权利要求1所述的表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，所述的耐电解液聚酯层(4)的单位重量为0.1克每平方米到50克每平方米。
5.如权利要求1所述的表面具有耐电解液聚酯层的锂电池软包装膜，其特征在于，所述的耐热性树脂层(1)与铝箔芯层(2)之间通过粘合剂(5)粘合，所述的铝箔芯层(2)与热塑性树脂层(3)之间通过粘合剂(5)粘合，耐热性树脂层(1)与耐电解液聚酯层(4)之间通过粘合剂(5)粘合。
6.权利要求1-5中任一项所述的表面具有耐电解液聚酯层的锂电池软包装膜的制造方法，其特征在于，包括：将铝箔芯层(2)置于耐热性树脂层(1)和热塑性树脂层(3)之间并在耐热性树脂层(1)与铝箔芯层(2)之间以及铝箔芯层(2)与热塑性树脂层(3)之间施加粘合剂(5)，采用干法复合或共挤出复合制得半成品膜；将半成品膜的耐热性树脂层(1)面上施加粘合剂(5)，采用干法复合或共挤出复合耐电解液聚酯层(4)，得到表面具有耐电解液聚酯层的锂电池软包装膜。
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| CN107134547A (zh) * | 2017-04-01 | 2017-09-05 | 乐凯胶片股份有限公司 | 一种新型锂离子电池用铝塑软包装膜 |
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| CN104332565A (zh) * | 2014-09-19 | 2015-02-04 | 浙江大东南股份有限公司 | 动力汽车用锂离子电池软包膜的制备方法 |
| CN104979496A (zh) * | 2015-07-13 | 2015-10-14 | 苏州锂盾储能材料技术有限公司 | 一种高性能锂电池复合包装铝塑膜及制备方法 |
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| CN107134547A (zh) * | 2017-04-01 | 2017-09-05 | 乐凯胶片股份有限公司 | 一种新型锂离子电池用铝塑软包装膜 |
| CN107134547B (zh) * | 2017-04-01 | 2020-05-19 | 乐凯胶片股份有限公司 | 一种新型锂离子电池用铝塑软包装膜 |
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