CN102414864A - 软包及包括其的二次电池 - Google Patents
软包及包括其的二次电池 Download PDFInfo
- Publication number
- CN102414864A CN102414864A CN2010800195438A CN201080019543A CN102414864A CN 102414864 A CN102414864 A CN 102414864A CN 2010800195438 A CN2010800195438 A CN 2010800195438A CN 201080019543 A CN201080019543 A CN 201080019543A CN 102414864 A CN102414864 A CN 102414864A
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- CN
- China
- Prior art keywords
- sealing
- soft roll
- battery
- secondary cell
- lithium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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Images
Classifications
-
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Abstract
本发明涉及一种软包,其包括第一密封部,用于将上片和下片密封,其中所述第一密封部在其一部分或全部区域上包含第二密封部。本发明还涉及使用该软包的软包型二次电池。本发明在软包型电池的部分或全部密封区域上提供了额外的密封部,因此有效地阻止水从外部渗入以及电解质从电池内部泄漏,从而能够使电池长期存储并改善了电池性能。
Description
技术领域
本发明涉及一种在第一密封部的部分或全部区域上包含附加的密封部从而提高长期存储特征并进而改善电池性能的软包(pouch),其中所述第一密封部密封软包的上片和下片,并且还涉及包含该软包的二次电池。
本申请要求2009年3月2日提交的第10-2009-0017672号韩国专利申请和2010年3月2日提交的第10-2010-0018385号韩国专利申请的优先权,所述专利申请全部以引用的方式纳入本说明书。
背景技术
随着便携式电器设备例如摄影机、便携式电话、便携式PC等电子产品的广泛应用,主要作为驱动电源而使用的二次电池的重要性不断提高。特别地,正在越来越多地使用锂二次电池,因为与其它传统电池例如铅酸电池、镍-镉(Ni-Cd)电池、镍-氢(Ni-H2)电池和镍-锌(Ni-Zn)电池相比,其每单位重量具有高能量密度并可快速地充电。
与传统的不可再充电原电池不同,由于数码相机、便携式电话、笔记本电脑和混合动力车等尖端领域的开发,对能充电/放电的二次电池进行了大量的研究。作为二次电池可以举出镍-镉电池、镍-金属氢化物电池、镍-氢电池、锂二次电池等。其中,锂二次电池的工作电压为3.6V以上,其用作便携式电器设备的电源或串联连接多个以用于高输出混合动力车中。锂二次电池的应用迅速增加,这是由于与镍-镉电池或镍-金属氢化物电池相比,锂二次电池的工作电压为其3倍并且每单位重量具有更佳的能量密度。
依据使用的电解质类型,锂二次电池可分为使用液体电解质的锂离子电池和使用固体聚合物电解质的锂离子聚合物电池。依据使用的固体聚合物电解质类型,锂离子聚合物电池可分为不含电解质溶液的完全固体型锂离子聚合物电池和使用包括电解质溶液的凝胶型聚合物电解质的锂离子聚合物电池。
使用液体电解质的锂离子电池通常以圆柱形或棱柱形金属壳的形式焊接密封。使用该种金属壳作为外壳的壳型二次电池其形状固定,因此对将此作为电源的电器设备的设计产生制约,并且在减小体积上具有难度。因此,已经开发了软包型二次电池并投入实际应用中,其中将两个电极以及隔膜和电解质置于薄膜型软包中并将其密封。
FIG.1示例说明了软包型二次电池。软包大体分为带有接收部分21的下片20和覆盖其的上片10。封装于接收部分21的电极组件30通过卷绕阴极31、阳极35和隔膜33的层压材料而制得。将电极组件置于接收部分21中之后,将上片10和下片20热连接以形成密封部分23,电极接头37和38从各自的电极伸出,并且可将胶带39贴在电极接头37和38与密封部分23交叠的区域。
将基于上片10来描述包括上片10和下片20的软包。软包具有多层结构,其包括一个由于本身的热连接特性而用作密封材料的内层15聚烯烃层(Polyolefin Layer)、一个由保持机械强度的材料制得并用作阻挡水分和氧气的隔离层的金属层13铝层(AL/Aluminum Layer)和一个作为材料保护层的外层11(通常为尼龙层),并将它们按以上顺序层压。通常将浇铸聚丙烯(CPP,Casted Polypropylene)用作基于聚烯烃的树脂层。
在制作具有该种包括上片和下片的软包的电池的过程中,在将包括电极和隔膜的电极组件30卷绕后,进行热连接,则形成如FIG.2所示的上片和下片相互粘接的密封部分23。然而,软包的热连接部分易受外部水分渗透。因此,长期的水分渗透是不可避免的,而渗透的水分与包含在电解质溶液中的LiPF6 -反应生成HF。从而使阳极活性物质变质。
软包型二次电池可具有如下优点:可以具有多种形状并用更低的体积和重量实现相同容量的二次电池。然而,与壳型电池不同,软包型电池使用柔性软包作为外壳,因而机械强度及可靠性低。因此,通常将软包型电池应用于凝胶型或完全固体型锂离子聚合物电池,而不用于使用具有严重漏液问题的电解质溶液的锂离子二次电池中。
然而,软包型电池应包括电极和电解质,以便满足高电容二次电池的需求而形成具有更高电容的电池。此外,还存在与电池的电容或容量不直接相关的逐渐减小密封部分尺寸的需求。
这是因为降低软包密封部分的宽度,在软包中可接收具有更高电容的电极组件,并能够降低与电容不直接相关的密封部分的尺寸。因此,随着密封部分的宽度减小,可得到具有与相同大小的软包相比更高电容的二次电池。
然而,因密封部分的宽度降低而使绝对密封面积降低,导致软包的密封可靠性劣化。外部水分渗透进入软包,导致长期存储稳定性劣化而产生电池性能劣化的问题。因此,需要能解决这些问题的软包。
公开内容
技术问题
因此,针对以上问题提出了本发明,且本发明的一个目的是解决由水分渗透进入密封部分和电解质溶液从软包中泄漏导致的传统二次电池的多种问题,从而基于增强长期存储稳定性而改进电池性能。
技术方案
根据本发明,上述及其它目的可如下实现:提供一种包含用于密封上片和下片的第一密封部的二次电池的软包套,其中所述软包套还包括第二密封部,其通过在所述第一密封部的一部分或全部上包覆铝金属箔胶带或至少一面涂敷有电绝缘物质的铝金属箔胶带形成。从而解决外部水分的渗透和电池性能的劣化的问题。
根据一方面,本发明提供了能有效地阻止外部水分渗透和电解质溶液从内部泄漏的软包。
根据另一方面,本发明提供了使用所述软包的软包型二次电池,其能有效地阻止水分和电解质溶液的渗透并因此改进长期存储稳定性,从而改进电池性能。
有益效果
本发明的软包包含在构成软包套的上片和下片的第一密封部的一部分或全部上形成的第二密封部,从而能够有效地预防在最终工序的介电击穿并使邻接电池间的干扰最小化,进而改进电池性能。
此外,可改进软包套密封部分的隔离性能,从而可阻止外部水分的渗透并可改进长期存储稳定性。
附图说明
从以下结合附图的更详细描述将更清楚地明白本发明的以上和其它目的、特征和其它优势,其中:
图1示例说明了软包型聚合物二次电池的一般构造;
图2示例说明了包括密封部分的传统软包型电池;
图4至11示例说明根据一个实施方案的软包型电池;且
图12为示出在实施例和对比例中制作的电池的放电电阻随存储时间而变的图。
最佳模式
为达到上述目的的本发明的软包,其特征在于其包括:第一密封部,其用于密封上片和下片;第二密封部,其分布在第一密封部的全部或一部分上。
此外,为达到本发明的另一个目的的二次电池,其特征在于使用具有如下结构的软包。
以下,将参照附图详细地描述本发明。
如在图3至5中所示,本发明的软包包括:第一密封部123,其用于密封上片110和下片120;第二密封部140a、140b,其分布在第一密封部123的全部或一部分上。
图4显示在第一密封部123的一部分上具有第二密封部140a的一例,图5是在整个第一密封部123上具有第二密封部140b的图。
优选地,根据本发明的第二密封部为铝金属箔胶带或至少一面涂敷有电绝缘物质的铝金属箔胶带。电绝缘体可选自聚烯烃聚合物、聚酯聚合物和尼龙。对电绝缘体没有限制,任意电绝缘体均可使用,只要其具有电绝缘体的特性即可。
如上所述那样在软包套的上片和下片由热连接而粘接的第一密封部上,使用铝金属箔胶带或至少一面涂敷有电绝缘物质的铝金属箔胶带形成第二密封部时,可阻止由于上片和下片间的粘合失效而由来自外部的水分或冲击等导致在局部产生的绝缘强度的破坏,从而使与其它相连电池间的干扰最小化。
图6至7是示例说明接收本发明电极组件230的软包套的视图。图6示例说明了在软包套的第一密封部223的一部分上使用铝金属箔胶带或至少一面涂敷有电绝缘物质的铝金属箔胶带形成的第二密封部240a的状态。
如在图6中所示,根据本发明的一个实施方案,第二密封部240a形成在从第一密封部223的最外侧起的第一密封部223的一部分上。外部水分的渗透通常是由第一密封部的最外层金属层的暴露导致的。因此,虽然第二密封部形成在从第一密封部的最外侧起的第一密封部的一部分而不是全部上,但仍可阻止外部水分的渗透和电解质溶液的泄漏。
此外,如在图7中所示,本发明一个实施方案的第二密封部240b形成于第一密封部(被第二密封部所覆盖,因此在图中无法示出)上与第一密封部相同的区域处。
此外,根据另一个实施方案,当第二密封部通过热连接上片和下片而密封时,可在上、下、左和右四侧的全部或部分上形成,且对其位置没有特殊限制。
同时,如在图8中所示,优选地,第二密封部340a可在第一密封部323处的除了电极接头337和338区域之外的其它部位上形成,以防止损坏输出端部的可能性。
图8至9示例说明了各电极接头(阴极接头和阳极接头,337、338)形成在一个方向上的实例。
图10和11示例说明了即使各电极接头(阴极接头和阳极接头,437和438)排布在不同方向上,第二密封部440a或440b也可在除了电极接头处之外的第一密封部423的部分或全部上形成的实例。
也就是说,图8和9示例说明了在软包套中接收电极组件之后,从外部连接电极输出端而制作的软包型电池,其第二密封部340a、340b形成于第一密封部323的部分或全部上的实例。
优选地,本发明第二密封部的厚度为0.1至400μm。当厚度低于0.1μm时,期望的第二密封部的效果不能得到充分地发挥,当厚度超过400μm时,考虑到电池的重量、厚度、可操作性和价格,其实际应用性较低。
该第二密封部可能导致由于在制作软包型锂离子聚合物电池的过程中排气而在电池开封和最终封装后在真空气氛下电解质溶液蒸汽的扩散,和由残留在软包密封部分的电解质溶液引起的电池内部和外部间的电流通道的形成。因此,如图所示,将一种在最终密封后显示出极佳绝缘性能的复合树脂涂成一个薄层,以阻止电流透过由铝制成的电池保护套的泄漏和由此引起的相邻电池的连续性能劣化。
根据本发明的包括第二密封部的情况,只要是具有软包型外部材料的电池,可不限制其类型而任意使用。此时,电极接头可排布在同一方向或不同方向,且对其位置没有特殊限制。
二次电池的软包基本上包括三层,即,通常为热连接层的内层、金属层和外层,以及必要时的其它功能层。本发明的二次电池的软包具有以下结构:其中将上片和下片相对侧的热连接层、金属层和外层,作为多个由不同材料构成的薄层,依次层压。另外,也可由多个其它不同代替材料层形成。例如,构成热连接层的CPP层可用选自以下之一的物质替代:聚氯丙烯、聚乙烯、乙烯共聚物、聚乙烯和丙烯酸酯的共聚物和聚丙烯和丙烯酸酯的共聚物。
软包的总厚度可通常为40至120μm,外层和内层为10至40μm,金属层为20至100μm,但本发明并不限于此。
以下将描述制作本发明二次电池的软包的方法。准备包括上片和下片的软包,将电极组件装入下片中并且将上片和下片相对侧进行热连接并粘接起来形成第一密封部。此外,各电极接头从电极组件中伸出并在软包外部形成,且在电极接头上形成绝缘膜以将电极接头与第一密封部隔离。
本发明中优选地,将第二密封部形成于第一密封部的一部分或全部上,且在除了电极接头之外的部位上形成,并且第二密封部可具有与第一密封部相等或比第一密封部更小的面积。
优选地,当第二密封部形成于第一密封部的一部分上时,第二密封部从第一密封部的末端面起形成。这是因为外部水分或内部电解质溶液通过软包套的端面吸收或泄漏。
此外,本发明还涉及包括电极组件的二次电池,所述电极组件以在具有前述结构的软包中将具有不同极性的两个电极通过隔膜分开的方式形成。
电极组件的实例包括,但不限于,凝胶卷(卷绕型)电极组件,其中将长片阴极和阳极以隔膜置于阴极和阳极之间的方式卷绕;堆叠型(层压型)电极组件,其中将多个切割成预订尺寸的阴极和阳极以隔膜置于阴极和阳极之间的方式顺序层压;堆叠-折叠型电极组件,其中将预订尺寸的阴极和阳极以隔膜置于阴极和阳极之间的方式层压,并卷绕双电池(Bi-cell)或全电池(Full cell)。
本发明的电极组件包括含有阴极活性物质的阴极、含有阳极活性物质的阳极和隔膜。
具体地,阴极是通过例如将阴极活性物质、导电材料和粘合剂的混合物涂布于阴极集流体并随后干燥而制得,如果需要,混合物还可包括填料。
可在本发明中使用的阴极活性物质的实例可包括,但不限于,层状化合物例如锂钴氧化物(LiCoO2)和锂镍氧化物(LiNiO2),或用一种或多种过渡金属取代的化合物;锂锰氧化物例如式Li1+xMn2-xO4(0≤x≤0.33)的化合物、LiMnO3、LiMn2O3和LiMnO2;锂铜氧化物(Li2CuO2);钒氧化物例如LiV3O8、V2O5和Cu2V2O7;LiFe3O4;式LiNi1-xMxO2(M=Co、Mn、Al、Cu、Fe、Mg、B或Ga,且0.01≤x≤0.3)的Ni-位型锂化的镍氧化物(lithiated nickel oxide);式LiMn2-xMxO2(M=Co、Ni、Fe、Cr、Zn或Ta,且0.01≤x≤0.1)或式Li2Mn3MO8(M=Fe、Co、Ni、Cu或Zn)的锂锰复合氧化物;其中部分Li被碱土金属离子取代的LiMn2O4;二硫化物;和Fe2(MoO4)3或由其任意组合形成的复合氧化物,其基于锂嵌入材料(lithium intercalation material)作为主要组分。
通常将阴极集流体的厚度制作为3至500μm。对阴极集流体没有特殊的限制,只要其具有高导电性且不会引起制作的电池中的化学变化即可。作为阴极集流体的实例,可提及不锈钢、铝、镍、钛、烧结碳和用碳、镍、钛或银表面处理过的铝或不锈钢。可将集流体制作为在其表面上具有精细的凹凸结构以增强与阴极活性物质的粘合。此外,集流体可具有多种形式,包括薄膜、片状、箔状、网状、多孔结构、泡沫体和无纺布。
基于包括阴极活性物质的混合物的总重量计,导电材料通常的加入量为1至50重量%。对导电材料没有特殊的限制,只要其具有合适的导电性且不会引起制作的电池中的化学变化即可。作为导电材料的实例,可提及包括以下的导电材料:石墨例如天然或人造石墨;炭黑例如炭黑、乙炔黑、Ketjen黑、槽法炭黑、炉法炭黑、灯黑和热裂炭黑;导电纤维例如碳纤维和金属纤维;金属粉末例如碳氟化物粉末、铝粉和镍粉;导电须晶例如氧化锌和钛酸钾;导电氧化物例如氧化钛;和聚亚苯基衍生物。
粘合剂是辅助活性物质和导电材料间粘合的组分,并辅助其与集流体的粘合。基于包括阴极活性物质的混合物的总重量计,本发明中使用的粘合剂的加入量通常为1至50重量%。作为粘合剂的实例,可提及聚偏二氟乙烯、聚乙烯醇、羧甲基纤维素(CMC)、淀粉、羟丙基纤维素、再生纤维素、聚乙烯吡咯烷酮、四氟乙烯、聚乙烯、聚丙烯、乙烯-丙烯-二烯三元共聚物(EPDM)、磺化EPDM、苯乙烯-丁二烯橡胶、氟橡胶和多种共聚物。
填料是用于抑制阴极膨胀的任选成分。对填料没有特殊的限制,只要其不会引起制作的电池中的化学变化且为纤维材料即可。作为填料的实例,可使用烯烃聚合物例如聚乙烯和聚丙烯;和纤维质材料例如玻璃纤维和碳纤维。
阳极是通过将阳极物质施用于阳极集流体并随后干燥而制得。如果需要,还可添加如上所述的其它组分。
通常将阳极集流体的厚度制作为3至500μm。对阳极集流体没有特殊的限制,只要其具有合适的导电性且不会引起制作的电池中的化学变化即可。作为阳极集流体的实例,可提及铜、不锈钢、铝、镍、钛、烧结碳、用碳、镍、钛或银表面处理过的铜或不锈钢,以及铝-镉合金。与阴极集流体类似,可将阳极集流体制作为使其表面上形成精细的凹凸结构以增强与阳极活性物质的粘合。此外,阳极集流体可具有多种形式,包括薄膜、片状、箔状、网状、多孔结构、泡沫体和无纺布。
作为可在本发明中使用的阳极物质的实例,可提及碳例如非石墨碳和基于石墨的碳;金属复合氧化物例如LixFe2O3(0≤x≤1)、LixWO2(0≤x≤1)和SnxMe1-xMe′yOz(Me:Mn、Fe、Pb、Ge;Me′:Al、B、P、Si、元素周期表中的I族、II族和III族元素、卤原子;0<x≤1;1≤y≤3;且1≤z≤8);锂金属;锂合金;基于硅的合金;基于锡的合金;氧化物例如SnO、SnO2、PbO、PbO2、Pb2O3、Pb3O4、Sb2O3、Sb2O4、Sb2O5、GeO、GeO2、Bi2O3、Bi2O4和Bi2O5;导电聚合物例如聚乙炔;和基于Li-Co-Ni的材料。
用于分隔电极、阴极和阳极的隔膜的实例包括,但不限于,通常已知的隔膜例如基于聚烯烃的隔膜,以及复合隔膜,其中将有机/无机复合层并入基于烯烃的材料基质中。
将具有上述结构的电极集流体装入软包套中并向其中注入电解质溶液以制作电池。
电解质溶液是含有锂盐的非水电解质,其由非水电解质和锂组成。作为非水电解质,可使用非水电解质溶液、固体电解质和无机固体电解质。
作为可在本发明中使用的非水电解质溶液,例如可提及质子惰性有机溶剂例如N-甲基-2-吡咯烷酮、碳酸亚丙酯、碳酸亚乙酯、碳酸亚丁酯、碳酸二甲酯、碳酸二乙酯、γ-丁内酯、1,2-二甲氧基乙烷、四羟基Franc、2-甲基四氢呋喃、二甲基亚砜、1,3-二氧戊环、甲酰胺、二甲基甲酰胺、二氧戊环、乙腈、硝基甲烷、甲酸甲酯、乙酸甲酯、磷酸三酯、三甲氧基甲烷、二氧戊环衍生物、环丁砜、甲基环丁砜、1,3-二甲基-2-咪唑烷酮、碳酸亚丙酯衍生物、四氢呋喃衍生物、乙醚、丙酸甲酯和丙酸乙酯。
作为在本发明中使用的有机固体电解质的实例,可提及聚乙烯衍生物、聚环氧乙烷衍生物、聚环氧丙烷衍生物、磷酸酯聚合物、聚赖氨酸、聚酯硫化物、聚乙烯醇、聚偏二氟乙烯和包含离子解离基团的聚合物。
作为在本发明中使用的无机固体电解质的实例,可提及锂的氮化物、卤化物和硫酸盐例如Li3N、LiI、Li5NI2、Li3N-LiI-LiOH、LiSiO4、LiSiO4-LiI-LiOH、Li2SiS3、Li4SiO4、Li4SiO4-LiI-LiOH和Li3PO4-Li2S-SiS2。
锂盐是易溶于上述非水电解质的材料,可包括例如LiCl、LiBr、LiI、LiClO4、LiBF4、LiB10Cl10、LiPF6、LiCF3SO3、LiCF3CO2、LiAsF6、LiSbF6、LiAlCl4、CH3SO3Li、CF3SO3Li、(CF3SO2)2NLi、氯硼烷锂、低级脂族羧酸锂、锂四苯基硼酸盐和亚胺锂盐。
另外,为了改进充电/放电特性和阻燃性,例如可向非水电解质中加入吡啶、亚磷酸三乙酯、三乙醇胺、环醚、乙二胺、n-甘醇二甲醚、六磷胺、硝基苯衍生物、硫磺、醌亚胺染料、N-取代的噁唑烷酮,N,N-取代的咪唑烷、乙二醇二烷基醚、铵盐、吡咯、2-甲氧基乙醇、三氯化铝等。如果需要,为了赋予不燃性,非水电解质还可包括含有卤素的溶剂例如四氯化碳和三氟乙烯。此外,为了改进高温存储特性,非水电解质可额外地包括二氧化碳气体。
同时,优选地该软包型二次电池为锂二次电池,但不限于此。
实施例
接下来,将结合以下实施例对本发明作更详细的描述。这些实施例只是用于示例说明本发明,而不应被理解为限制本发明的范围和主旨。
实施例
将阴极和阳极被隔膜分隔开的电极组件装入包括上片和下片的软包套中,其中使软包套的上片和下片彼此热连接,将厚度为40μm的铝金属箔胶带粘附于上片和下片的第一密封部以形成第二密封部。
对比例
用与实施例相同的方法制作电池,除了未将铝金属箔胶带粘附于软包外部材料的上层软包和下层软包的第一密封部。
实验实施例
为了确认长期存储特性的改进效果,在60℃的恒温下测量电容和放电电阻随保存时间的变化。每到3周、6周、10周时,进行测量。由经过五次循环获得的电容测量电容的变化,其中每次循环包括用恒流/恒压(CC/CV)方法以0.5C倍率进行充电(4.15V,750mA)和用恒流(CC)方法以0.5C倍率进行放电(3.0V)。在SOC 50时以5C倍率使电池迅速放电10秒的同时,通过电场的变化除以电流获得放电电阻的增加。
由此获得的电容保持率在下表1中示出。从表1中可看出,随着电容保持(%)增加,电池性能得到改进。电阻增加(%)在下表2中示出。从表2中可看出,随着电阻增加(%)降低,电池性能得到改进。
表1
表2
表1和2的结果表明与传统电池(对比例)相比本发明实施例的电池在60℃存储10周后呈现出约6%的更高电容保持,且与对比例相比在存储10周后电阻增加呈现出约15%的改进性能。从图12中可看出,与对比例相比,本发明的实施例呈现出明显改进的电阻增加。
因此,由于第二密封部形成于构成软包外部材料的上片和下片的第一密封部处,可有效地阻止透过第一密封部的外部水分渗透和电解质溶液泄漏,从而制得具有改进的容量保持和电阻增加的电池。
虽然为了示例性说明的目的公开了本发明的优选实施方案,本领域技术人员应理解,在不偏离随附的权利要求书所公开的本发明的范围和主旨时,多种修改、添加和替代是可行的。
Claims (11)
1.一种软包,其包括:
第一密封部,其用于将上片和下片密封;及
第二密封部,其分布在所述第一密封部的一部分或全部上。
2.根据权利要求1的软包,其中所述第二密封部由铝金属箔胶带或至少一面涂敷有电绝缘物质的铝金属箔胶带形成。
3.根据权利要求2的软包,其中所述电绝缘物质选自聚烯烃聚合物、聚酯聚合物和尼龙。
4.根据权利要求1的软包,其中所述第二密封部的厚度为0.1至400μm。
5.根据权利要求1的软包,其中所述第二密封部分布在除了放置电极接头之外的其它部位。
6.根据权利要求5的软包,其中所述电极接头形成在同一方向上。
7.根据权利要求5的软包,其中所述电极接头形成在不同方向上。
8.根据权利要求1的软包,其中,当所述第二密封部形成在第一密封部的一部分上时,所述第二密封部从所述第一密封部的端部起延伸。
9.根据权利要求1的软包,其中构成所述软包的上片和下片分别由内层、金属层和外层依次层压而形成。
10.一种使用根据权利要求1的软包的二次电池。
11.根据权利要求10的二次电池,其中所述二次电池是锂二次电池。
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CN104412407A (zh) * | 2012-06-18 | 2015-03-11 | Nec能源元器件株式会社 | 覆膜电池 |
CN104425774A (zh) * | 2013-08-22 | 2015-03-18 | 三星Sdi株式会社 | 袋型可再充电电池 |
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Also Published As
Publication number | Publication date |
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WO2010101384A3 (ko) | 2010-12-16 |
KR101032290B1 (ko) | 2011-05-06 |
WO2010101384A2 (ko) | 2010-09-10 |
EP2405506B1 (en) | 2015-05-06 |
US20140011078A1 (en) | 2014-01-09 |
JP2013118194A (ja) | 2013-06-13 |
US8557431B2 (en) | 2013-10-15 |
US20100310930A1 (en) | 2010-12-09 |
EP2405506A2 (en) | 2012-01-11 |
EP2405506A4 (en) | 2012-11-07 |
JP2012519366A (ja) | 2012-08-23 |
JP2013008691A (ja) | 2013-01-10 |
KR20100099063A (ko) | 2010-09-10 |
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