CN111194488B - 电池组及其标签附着方法 - Google Patents
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Abstract
本发明涉及一种薄膜标签可以容易地附着到其的电池组及其标签附着方法。在一个实施例中公开了一种电池组,该电池组包括:电池单元,具有容纳在壳体中的电极组件;以及外膜,具有标签、阶梯差补偿带和保护膜,标签附着到壳体的至少一个表面且直接附着到壳体,阶梯差补偿带附着到标签的上表面且位于标签的一侧上,保护膜附着到标签的上表面且延伸到阶梯差补偿带的上部,其中,保护膜被附着为从标签可拆卸。
Description
技术领域
本公开涉及一种电池组及其标签附着方法。
背景技术
与不可再充电的一次电池不同,二次电池能够被充电和放电。由按组(或包)的形式包装的单个电池单元构成的低容量二次电池用于诸如蜂窝电话和摄像机的各种小型便携式电子装置。多个电池单元以组结构彼此连接的高容量二次电池被广泛用作驱动混合动力汽车的电动机的电源。
二次电池被制造成各种形状且通常被分类为袋型电池、圆柱形电池或棱柱形电池。可以通过在壳体中容纳使隔膜作为正极板与负极板之间的绝缘体的电极组件和电解质来构造二次电池。另外,二次电池可以具有附着到其外表面的标签,标签包括印刷在其上的各种多条信息(例如,制造商、型号名称、产品编号、各种标准或质量标示、使用注意事项等)。同时,厚度小的标签会增大缺陷发生的可能性,厚度大的标签会使得紧凑的二次电池难以实现。
发明内容
技术问题
本公开提供了一种可以使薄膜标签容易地附着到其的电池组及其标签附着方法。
技术方案
根据本公开的一方面,提供了一种电池组,该电池组包括:电池单元,具有容纳在壳体中的电极组件;以及外膜,具有标签、阶梯差补偿带和保护膜,标签附着到壳体的至少一个表面且直接附着到壳体,阶梯差补偿带附着到标签的上表面且位于标签的一侧上,保护膜附着到标签的上表面且延伸到阶梯差补偿带的上部,保护膜可以被附着为从标签可拆卸。
保护膜可以包括:第一保护膜,定位在标签的未设置阶梯差补偿带的表面上,第一保护膜具有与阶梯差补偿带相同的高度;以及第二保护膜,定位在第一保护膜上且延伸到阶梯差补偿带的上部。
第一粘合剂可以定位在标签与壳体之间,粘合力比第一粘合剂的粘合力小的第二粘合剂可以定位在第一保护膜与标签之间,粘合力比第二粘合剂的粘合力大的第三粘合剂可以定位在第二保护膜与第一保护膜之间,第二粘合剂可以定位在第二保护膜与阶梯差补偿带之间。
第一粘合剂和第三粘合剂可以是PET粘合剂,第二粘合剂可以是硅粘合剂。
第二粘合剂的粘合力可以是第一粘合剂或第三粘合剂的粘合力的1/60至1/20。
电池组还可以包括外盖,外盖结合到电池单元且具有嵌入到外盖内部的一部分处的电路结构,外盖可以结合以安装在标签的上表面上,电路结构可以紧挨着阶梯差补偿带设置,电路结构和阶梯差补偿带具有相同的高度。
根据本公开的一方面,提供了一种电池组的标签附着方法,该标签附着方法包括以下步骤:准备具有标签、阶梯差补偿带和保护膜的外膜,阶梯差补偿带附着到标签的上表面且位于标签的一侧上,保护膜附着到标签的上表面且延伸到阶梯差补偿带的上部;将外膜附着到电池单元以允许标签与电池单元的壳体接触;以及从标签去除保护膜。
保护膜可以包括:第一保护膜,定位在标签的未设置阶梯差补偿带的表面上,第一保护膜具有与阶梯差补偿带相同的高度;以及第二保护膜,定位在在第一保护膜上且延伸到阶梯差补偿带的上部。
可以通过第一粘合剂将标签附着到壳体,可以通过粘合力比第一粘合剂的粘合力小的第二粘合剂将第一保护膜附着到标签,可以通过粘合力比第二粘合剂的粘合力大的第三粘合剂将第二保护膜的一部分附着到第一保护膜,可以通过第二粘合剂将第二保护膜的另一部分附着到阶梯差补偿带。
在去除保护膜的步骤之后,标签附着方法还可以包括以下步骤:将具有嵌入到外盖的内部的一部分处的电路结构的外盖附着到电池单元。在此,外盖可以结合以安装在标签的上表面上,电路结构可以位于阶梯差补偿带旁边,电路结构和阶梯差补偿带可以具有相同的高度。
有益效果
如上所述,根据实施例的电池组包括具有标签和可拆卸地安装在标签上的保护膜的外膜,并且被构造为通过将外膜附着到电池单元然后去除保护膜来使薄膜型的标签附着到电池单元,从而容易地将薄标签附着到电池单元。
附图说明
图1是根据本公开的实施例的电池组的透视图。
图2a是沿着图1的线I-I截取的剖视图。
图2b是图2a的部分A的放大剖视图。
图3a是示出了从外膜去除保护膜的方法的剖视图。
图3b是图3a的部分B的放大剖视图。
图4a是示出了从外膜去除了保护膜的状态的剖视图。
图4b是图4a的部分C的放大剖视图。
图5是示出了根据本公开的实施例的将外膜附着到电池组的状态的剖视图。
图6是根据本公开的另一实施例的电池组的透视图。
具体实施方式
提供本公开的实施例以向本领域技术人员更充分地描述本公开,以下实施例可以以许多不同的形式来实现,并且不应被解释为限于在此所阐述的示例实施例。相反,提供这些示例实施例,使得本公开将是透彻的和完整的,并且将把本公开的各方面和特征传达给本领域技术人员。
另外,出于描述性目的,可以在这里使用诸如“在……之下”、“在……下方”、“下”、“在……上方”、“上”等的空间相对术语来描述如附图中所示的一个元件或特征与另外的(多个)元件或(多个)特征的关系。将理解的是,空间相对术语旨在涵盖装置在使用或操作中的除图中描绘的方位之外的不同方位。例如,如果附图中的二次电池被翻转,则被描述为“在”其他元件或特征“下方”或“之下”的元件随后将被定位为“在”所述其他元件或特征“上”或“上方”。因此,术语“在……下方”可以涵盖上方和下方两个方位。
另外,在附图中,为了简洁和清楚起见,夸大了各种组件的厚度或尺寸。同样的标号始终表示同样的元件。如在此所使用的,术语“和/或”包括一个或更多个相关所列项的任何组合和所有组合。
图1是根据本公开的实施例的电池组的透视图。图2a是沿着图1的线I-I截取的剖视图,图2b是图2a的部分A的放大剖视图。图3a是示出了从外膜去除保护膜的方法的剖视图,图3b是图3a的部分B的放大剖视图。图4a是示出了从外膜去除保护膜的状态的剖视图,图4b是图4a的部分C的放大剖视图。图5是示出了根据本公开的实施例的将外膜附着到电池组的状态的剖视图。
参照图1,根据本公开的实施例的电池组100包括电池单元110、保护电路模块120和外膜(或称为外部膜)130。
电池单元110包括电极组件111和容纳电极组件111的壳体114。电极组件111是通过卷绕或堆叠第一电极板、隔膜和第二电极板的叠层来制备的。在此,第一电极板可以用作正电极,第二电极板可以用作负电极。当然,第一电极板和第二电极板的极性可以根据由本领域技术人员作出的选择而颠倒和布置。
第一电极板是通过在由金属箔(诸如铝箔)制成的第一电极集流体上涂敷第一电极活性物质(诸如过渡金属氧化物)来制备的,并且包括其上未涂敷第一电极活性物质的第一电极未涂覆部。另外,第一电极接线片112附着到第一电极未涂覆部。第一电极接线片112可以通过例如焊接附着到第一电极未涂覆部。第一电极接线片112的一端电连接到第一电极板,第一电极接线片112的另一端延伸并突出到壳体114的外侧。
第二电极板是通过在由金属箔(诸如铜箔或镍箔)制成的第二电极集流体上涂敷第二电极活性物质(诸如石墨或碳)来制备的,并且包括其上未涂敷第二电极活性物质的第二电极未涂覆部。另外,第二电极接线片113附着到第二电极未涂覆部。第二电极接线片113可以通过例如焊接附着到第二电极未涂覆部。第二电极接线片113的一端电连接到第二电极板,第二电极接线片113的另一端延伸并突出到壳体114的外侧。
在此,第一电极接线片112和第二电极接线片113被绝缘构件112a和113a覆盖,因此不与壳体114电短路。
位于第一电极板与第二电极板之间的隔膜防止在它们之间发生短路并允许锂离子移动。隔膜可以由聚乙烯、聚丙烯或聚丙烯和聚乙烯的复合膜制成。
壳体114容纳电极组件111。例如,壳体114可以具有袋型构造以便容纳随后要被密封的电极组件111。壳体114具有一对长侧表面114a和一对短侧表面114b。在此,一对长侧表面114a是指具有比一对短侧表面114b大的面积的表面。电极组件111的第一电极接线片112和第二电极接线片113穿过壳体114的一侧引出。在此,定位在第一电极接线片112和第二电极接线片113上的绝缘构件112a和113a与壳体114的一侧密封。也就是说,绝缘构件112a和113a定位在第一电极接线片112和第二电极接线片113与壳体114之间的接触部分上,从而防止第一电极接线片112和第二电极接线片113与壳体114电短路。
另外,壳体114可以具有袋状构造,并且可以由用金属制成的罐形成,如图6中所示。
保护电路模块120电连接到电池单元110并控制电池单元110的充电/放电。保护电路模块120包括电路板121和定位在电路板121中的多个器件。电路板121由树脂制成且是基本上平坦的矩形板的形状。例如,电路板121可以是印刷电路板(PCB)。另外,电路板121可以包括用于控制电池单元110的充电/放电的电路或者诸如用于防止电池单元110过放电或过充电的电路的保护电路。结合到电池单元110的第一电极接线片112和第二电极接线片113的第一电极端子122和第二电极端子123定位在电路板121的一个表面上。具体地,第一电极接线片112通过焊接电连接到第一电极端子122,第二电极接线片113通过焊接电连接到第二电极端子123。
外膜130附着到电池单元110的表面。外膜130附着到电池单元110的壳体114以便覆盖壳体114的至少一个表面。例如,可以附着外膜130以覆盖壳体114的一对长侧表面114a和一对短侧表面114b中的一者。另外,可以附着外膜130以仅覆盖一对长侧表面114a中的一个和一对短侧表面114b中的一个,或者覆盖一对长侧表面114a中的两个和一对短侧表面114b中的两个。
参照图2a和图2b,外膜130包括标签131、阶梯差补偿带132和保护膜133。
标签131直接附着到壳体114的表面并且包括印刷在其上的关于电池组100的各种多条信息。标签131是薄膜的形状以防止电池组100的厚度增大。例如,标签131可以具有在0.01mm至0.05mm范围内的厚度。如果标签131的厚度小于0.01mm,则标签131会太薄而不能在其上印刷关于电池组100的信息,如果标签131的厚度大于0.05mm,则电池组100会变得不必要地厚。
另外,标签131可以由诸如聚乙烯(PE)、聚丙烯(PP)或聚对苯二甲酸乙二醇酯(PET)的聚合物树脂制成。第一粘合剂131a定位在标签131的一个表面上,标签131可以通过第一粘合剂131a附着到壳体114。尽管在附图中将标签131和第一粘合剂131a示出为单独的层,但是为了说明起见,标签131可以与第一粘合剂131a一体地形成。第一粘合剂131a可以是PET粘合剂。第一粘合剂131a可以具有约600g/f的粘合力。
阶梯差补偿带132附着到标签131的上表面且位于标签131的一侧上。阶梯差补偿带132可以是粘合带。因此,阶梯差补偿带132可以固定地附着到标签131的上部。阶梯差补偿带132可以由诸如聚乙烯(PE)、聚丙烯(PP)或聚对苯二甲酸乙二醇酯(PET)的聚合物树脂制成。阶梯差补偿带132被设置为用于补偿电池组100与结合到电池组100的外盖之间的阶梯差。例如,如图5中所示,诸如天线的电路结构141可以嵌入结合到电池组100的外盖140内部。电路结构141仅安装在外盖140的一部分处,导致在外盖140与电池组100之间的未设置电路结构141的另一部分处出现空的空间。因此,在本公开中,阶梯差补偿带132设置在标签131上以填充外盖140与电池组100之间的空的空间,从而改善了电池组100与外盖140之间的结合力。另外,阶梯差补偿带132可以具有根据安装在外盖140上的电路结构141的面积和厚度而变化的面积和厚度。
另外,阶梯差补偿带132可以具有与第一粘合剂131a的允许将标签131附着到壳体114的粘合力相等的粘合力。因此,即使当外膜130的保护膜133被从标签131去除时,阶梯差补偿带132仍然保持附着到标签131,因此可以补偿电池组100与外壳140之间的阶梯差。
保护膜133附着到标签131上以覆盖标签131和阶梯差补偿带132。保护膜133允许处于薄膜的形式的标签131保持其形状。换句话说,当相对薄的标签131在后续工艺中单独存在时,该标签131容易出现诸如卷曲或褶皱的缺陷。因此,在本公开中,可拆卸地附着到标签131的保护膜133被提供以利于标签131的处理,从而可以减少可能的缺陷。另外,保护膜133可以具有比标签131大的面积以易于从标签131剥离。此外,保护膜133可以保护印刷在标签131上的关于电池组100的信息不被擦除。
保护膜133包括附着在标签131的上表面上的第一保护膜134和附着在第一保护膜134的上表面上的第二保护膜135,第一保护膜具有与阶梯差补偿带相同的高度。
第一保护膜134附着到标签131的上表面且位于阶梯差补偿带132近旁(即,紧挨着阶梯差补偿带132)。也就是说,第一保护膜134附着到标签131的未设置有阶梯差补偿带132的部分。第一保护膜134可以具有与阶梯差补偿带132相同的厚度。第一保护膜134可以由诸如聚乙烯(PE)、聚丙烯(PP)或聚对苯二甲酸乙二醇酯(PET)的聚合物树脂制成。另外,第一保护膜134也可以被称为第一聚酯薄膜(mylar)。
另外,第二粘合剂134a定位在第一保护膜134的一个表面上。第一保护膜134可以通过第二粘合剂134a附着到标签131。尽管在图中将第一保护膜134和第二粘合剂134a示出为单独的层,但是为了说明起见,第一保护膜134可以与第二粘合剂134a一体地形成。第二粘合剂134a可以是硅粘合剂,因此允许保护膜133容易地从标签131剥离。第二粘合剂134a可以具有约10g/f至30g/f的粘合力。第二粘合剂134a的粘合力比第一粘合剂131a的粘合力小。例如,第二粘合剂134a的粘合力是第一粘合剂131a的粘合力的约1/60至1/20。因此,定位在第一保护膜134上的第二粘合剂134a的粘合力比定位在标签131上的第一粘合剂131a的粘合力小,从而允许保护膜133容易地从标签131剥离。
第二保护膜135定位在第一保护膜134的上表面上并且具有比第一保护膜134大的面积。另外,第二保护膜135从第一保护膜134的上表面延伸到阶梯差补偿带132的上表面,以便覆盖第一保护膜133和阶梯差补偿带132。第二保护膜135可以由诸如聚乙烯(PE)、聚丙烯(PP)或聚对苯二甲酸乙二醇酯(PET)的聚合物树脂制成。另外,第二保护膜135也可以被称为第二聚酯薄膜。
另外,第二粘合剂134a和第三粘合剂135a定位在第二保护膜135的一个表面上。第二保护膜135可以通过第二粘合剂134a和第三粘合剂135a附着到阶梯差补偿带132和第一保护膜134。尽管第二保护膜135、第二粘合剂134a和第三粘合剂135a在图中被示出为单独的层,但是为了说明起见,第二保护膜135可以与第二粘合剂134a和第三粘合剂135a一体地形成。具体地,第二粘合剂134a可以设置在阶梯差补偿带132与第二保护膜135之间,第三粘合剂135a可以设置在第一保护膜134与第二保护膜135之间。第二粘合剂134a可以是硅粘合剂,因此允许第二保护膜135容易地从阶梯差补偿带132剥离。第二粘合剂134a可以具有约10g/f至30g/f的粘合力。第二粘合剂134a的粘合力比阶梯差补偿带132的粘合力小。因此,当从标签131去除保护膜133并且仅去除位于阶梯差补偿带132上的第二保护膜135时,阶梯差补偿带132仍然保持附着到标签131。第三粘合剂135a可以具有比第二粘合剂134a的粘合力大的粘合力。详细地,第三粘合剂135a可以由与第一粘合剂131a相同的材料制成,并且可以是PET粘合剂。第三粘合剂135a可以具有约600g/f的粘合力。这样,第三粘合剂135a允许第二保护膜135和第一保护膜134彼此牢固地附着。因此,当保护膜133被从标签131去除时,在第一保护膜134和第二保护膜135彼此不分开的同时,以相对小的粘合力彼此附着的第一保护膜134和标签131彼此分开。
将参照图2a至图4b简要地描述将外膜附着到电池单元的方法。
首先,如图2a和图2b中所示,将包括标签131、阶梯差补偿带132、第一保护膜134和第二保护膜135的外膜130附着到电池单元110。在此,将外膜130附着到电池单元110使得标签131和阶梯差补偿带132与电池单元110的壳体114接触。然后,如图3a和图3b中所示,如果将第二保护膜135的一端向上提起,则通过具有相对小的粘合力的第二粘合剂134a彼此附着的第二保护膜135和阶梯差补偿带132容易地彼此分离,并且同样适用于通过第二粘合剂134a彼此附着的第一保护膜134和标签131。因此,如图4a和图4b中所示,从标签131去除了保护膜133,并且仅标签131和阶梯差补偿带132留在电池单元110的外表面上。在此,阶梯差补偿带132保持从标签131突出。当具有嵌入其中的电路结构141(例如,天线)的外盖140与电池组100结合时,如图5中所示,阶梯差补偿带132可以填充外盖140与电池组100之间的空的空间。因此,阶梯差补偿带132可以增大电池组100与外盖140之间的结合力。
如上所述,根据实施例的电池组100包括具有标签131和可拆卸地安装在标签131上的保护膜133的外膜130,并且被构造为通过使外膜130附着到电池单元110然后去除保护膜133来使薄膜型的标签131附着到电池单元110。也就是说,根据实施例的电池组100包括可拆卸的保护膜133,从而容易地将薄标签131附着到电池单元110,而不增加电池组100的厚度。
图6是根据本公开的另一实施例的电池组的透视图。
参照图6,根据另一实施例的电池组200包括电池单元210、保护电路模块120和外膜130。图6中所示的电池组200与图1中所示的电池组100的不同之处仅在于电池单元的形状。
电池单元210包括电极组件、容纳电极组件的壳体214和结合到壳体214的上表面的盖板215。在此,壳体214可以具有由金属制成的罐的构造,而不是袋型构造。另外,保护电路模块120安装在盖板215上,外膜130附着到罐214的一对长侧表面中的任意一个。尽管在图中示出了外膜130仅附着到罐214的一对长侧表面中的任意一个,但是外膜130可以延伸到罐214的背对的短侧表面以及长侧表面,并且可以附着为覆盖罐214的所有外表面。另外,由于外膜130具有与上述相同的形状,因此将不给出其详细描述。
尽管已经描述了前述实施例以实践本公开的电池组及其标签膜附着方法,但是本领域普通技术人员将理解的是,在不脱离由权利要求书限定的本公开的精神和范围的情况下,可以在其中进行形式和细节上的各种改变。
Claims (8)
1.一种电池组,所述电池组包括:
电池单元,具有容纳在壳体中的电极组件;以及
外膜,具有标签、阶梯差补偿带和保护膜,标签附着到壳体的至少一个表面且直接附着到壳体,阶梯差补偿带附着到标签的上表面且位于标签的一侧上,保护膜附着到标签的上表面且延伸到阶梯差补偿带的上部,
其中,保护膜被附着为从标签可拆卸,并且
其中,保护膜包括:第一保护膜,定位在标签的未设置阶梯差补偿带的表面上,第一保护膜具有与阶梯差补偿带相同的高度;以及第二保护膜,定位在第一保护膜上并且延伸到阶梯差补偿带的上部。
2.根据权利要求1所述的电池组,其中,第一粘合剂定位在标签与壳体之间,具有比第一粘合剂的粘合力小的粘合力的第二粘合剂定位在第一保护膜与标签之间,具有比第二粘合剂的粘合力大的粘合力的第三粘合剂定位在第二保护膜与第一保护膜之间,第二粘合剂定位在第二保护膜与阶梯差补偿带之间。
3.根据权利要求2所述的电池组,其中,第一粘合剂和第三粘合剂是PET粘合剂,第二粘合剂是硅粘合剂。
4.根据权利要求2所述的电池组,其中,第二粘合剂的粘合力是第一粘合剂的粘合力或第三粘合剂的粘合力的1/60至1/20。
5.根据权利要求1所述的电池组,所述电池组还包括:外盖,结合到电池单元且具有嵌入外盖内部的部分处的电路结构,其中,外盖被结合成安装在标签的上表面上,电路结构位于阶梯差补偿带近旁,电路结构和阶梯差补偿带具有相同的高度。
6.一种电池组的标签附着方法,所述标签附着方法包括以下步骤:
准备外膜,外膜具有标签、附着到标签的上表面且位于标签的一侧上的阶梯差补偿带以及附着到标签的上表面且延伸到阶梯差补偿带的上部的保护膜;
将外膜附着到电池单元以允许标签与电池单元的壳体接触;并且
从标签去除保护膜,
其中,保护膜包括:第一保护膜,定位在标签的未设置阶梯差补偿带的表面上,第一保护膜具有与阶梯差补偿带相同的高度;第二保护膜,定位在第一保护膜上并且延伸到阶梯差补偿带的上部。
7.根据权利要求6所述的标签附着方法,其中,标签通过第一粘合剂附着到壳体,第一保护膜通过具有比第一粘合剂的粘合力小的粘合力的第二粘合剂附着到标签,第二保护膜的一部分通过具有比第二粘合剂的粘合力大的粘合力的第三粘合剂附着到第一保护膜,第二保护膜的另一部分通过第二粘合剂附着到阶梯差补偿带。
8.根据权利要求6所述的标签附着方法,其中,在去除保护膜的步骤之后,所述标签附着方法还包括将具有嵌入外盖内部的部分处的电路结构的外盖附着到电池单元,其中,外盖被结合成安装在标签的上表面上,电路结构位于阶梯差补偿带近旁,电路结构和阶梯差补偿带具有相同的高度。
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US11557819B2 (en) | 2023-01-17 |
EP3671892A4 (en) | 2021-07-21 |
CN114665137A (zh) | 2022-06-24 |
KR20190091094A (ko) | 2019-08-05 |
US20210203048A1 (en) | 2021-07-01 |
HUE063401T2 (hu) | 2024-01-28 |
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CN111194488A (zh) | 2020-05-22 |
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