CN115428236A - 电池单元的制造方法和袋成形设备 - Google Patents
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Abstract
根据本公开内容实施方式的制造袋型电池单元的方法包括:通过使用压纹冲压部在袋膜的一部分中形成压纹部。
Description
技术领域
相关申请的交叉引用
本申请要求于2020年11月26日在韩国知识产权局提交的韩国专利申请第10-2020-0161173号权益,通过引用将上述韩国专利申请的全部公开内容结合在此。
本公开内容涉及一种电池单元的制造方法和袋成形设备,更具体地,涉及一种具有提高的视觉识别率的电池单元的制造方法和袋成形设备。
背景技术
随着近来对诸如笔记本、视频摄像机和便携式电话之类的便携式电子产品的需求快速增加以及电动车辆、储能电池、机器人、卫星等的深入发展,正在对用作驱动电源的二次电池进行诸多研究。
安装在电池壳体中的电极组件是能够充电和放电的电力产生元件,其具有正极/隔膜/负极堆叠结构,并且电极组件分为果冻卷型、堆叠型和堆叠/折叠型。果冻卷型电极组件配置为具有其中被施加有活性材料的长片型正极和长片型负极在正极与负极之间插置有隔膜的状态下进行卷绕的结构,堆叠型电极组件配置为具有其中大量具有预定尺寸的正极和大量具有预定尺寸的负极在正极与负极之间插置有隔膜的状态下顺序堆叠的结构,堆叠/折叠型电极组件是果冻卷型电极组件和堆叠型电极组件的组合。其中,果冻卷型电极组件具有易于制造并且每单位重量的能量密度较高的优点。
另外,基于电池壳体的形状,二次电池分为电极组件内置于圆柱形金属罐中的圆柱形电池、电极组件内置于棱柱形金属罐中的棱柱形电池、以及电极组件内置于由铝层压片形成的袋型壳体中的袋型电池。
袋型二次电池包括电极和隔膜交替层压的电极组件、以及用于容纳电极组件的袋壳体。制造二次电池的方法包括:制造电极的电极制造步骤、交替层压电极和隔膜以制造电极组件的电极组件制造步骤、将电极引线结合至电极组件的电极引线结合步骤、以及在电极引线的末端被引出到外部的状态下将电极组件容纳在袋壳体中并且密封袋壳体的边缘表面的袋密封步骤。
在此,使用袋成形设备来制造袋壳体,袋成形设备包括:在其中设置袋膜并且形成有成形凹槽的模具单元、以及在按压设置于模具单元上的袋膜的状态下使袋膜插入成形凹槽中,从而形成电极组件容纳部的按压单元。按压单元包括插入成形凹槽中的按压部。
通过使用这样的袋成形设备,将袋膜布置于模具单元上,然后利用按压单元中包括的按压部按压布置于模具单元上的袋膜的表面。然后,在按压部按压袋膜的状态下使按压部插入模具单元的成形凹槽中,由此可在袋膜的表面形成具有成形凹槽形状的电极组件容纳部。
之后,为了在后续工序中投入袋膜,传统上,可通过将袋膜的端部穿孔来指定位置。然而,当通过穿孔工序在袋膜中形成孔时,存在偶尔无法穿孔的情况,这导致在更换成形设备的模具时需要调整穿孔单元的分离位置的问题。
现有技术文献
专利文献
日本未审专利公开第2019-185978号
发明内容
技术问题
本公开内容的目的是提供一种具有提高的视觉识别率的电池单元的制造方法和袋成形设备。
然而,本公开内容的实施方式要解决的问题不限于上述问题,能够在本公开内容所包括的技术构思的范围内进行各种扩展。
技术方案
根据本公开内容的实施方式,提供了一种制造袋型电池单元的方法,包括:通过使用压纹冲压部在袋膜的一部分中形成压纹部。
所述压纹冲压部可沿着所述压纹部的边缘冲压以形成凹入部。
所述压纹部可基于冲压出的所述凹入部被视觉(Vision)识别为内圆形状和外圆形状。
形成所述压纹部可进一步包括在所述压纹冲压部与坯料保持件彼此对置的状态下使袋膜成形。
形成所述压纹部可进一步包括在所述坯料保持件按压所述压纹部的底表面的同时,通过所述压纹冲压部对所述袋膜进行冲压。
所述压纹部的所述底表面可形成为平坦的。
可在所述袋型电池单元的袋成形期间形成所述压纹部。
根据本公开内容的实施方式,提供了一种用于形成袋膜的容纳部的袋成形设备,所述袋成形设备包括:压纹冲压部;用作供所述压纹冲压部移动的通道的模具部;以及在所述模具部内与所述压纹冲压部对置的坯料保持件。
所述压纹冲压部可在所述袋膜中形成具有凹入部的压纹部,并且所述压纹部基于所述凹入部可具有外圆形状和内圆形状。
所述坯料保持件可按压所述袋膜的与所述压纹部对应的底表面,使得所述压纹部的底表面是平坦的。
有益效果
根据本公开内容的实施方式,可通过应用压纹工艺来提高视觉识别率。
此外,在压纹冲压部与坯料保持件彼此对置的状态下使袋膜成形,使得与坯料保持件接触的袋膜的底表面是平坦的(flat),可进一步提高视觉识别率。
本公开内容的效果不限于上面提及的效果,本领域技术人员将从所附权利要求的描述清楚地理解上面未描述的额外其他效果。
附图说明
图1是示出袋型电池单元的分解透视图;
图2是示出通过根据本公开内容实施方式的制造袋型电池单元的方法形成的压纹部的示图;
图3是示出根据本公开内容实施方式的压纹形成单元的示图;
图4是示出通过根据比较例的压纹工艺形成的压纹部的照片;
图5是示出图4的压纹部的视觉识别率的示图;
图6是示出通过根据本公开内容实施方式的压纹工艺形成的压纹部的照片;和
图7是示出图6的压纹部的视觉识别率的示图。
具体实施方式
下文中,将参照附图详细描述本公开内容的各实施方式,以使得本领域技术人员能够实施它们。本公开内容可以以各种不同的方式修改,不限于本文中阐述的实施方式。
为了清楚起见,本文中将省略与说明书无关的部分的描述,并且在整个说明书中相同的参考标记表示相同的要素。
此外,在附图中,为了便于描述,任意地示出了每个要素的尺寸和厚度,本公开内容必然不限于附图中示出的那些。在附图中,为了清楚起见,夸大了层、区域等的厚度。在附图中,为了便于描述,一些层和区域的厚度被夸大。
此外,将理解的是,当诸如层、膜、区域、或板之类的元件被称为在另一元件“上”或“上方”时,所述元件可直接在所述另一元件上或者也可存在中间元件。相反,当一元件被称为“直接在”另一元件“上”时,意味着不存在中间元件。此外,词语“在……上”或“在……上方”是指设置在基准部分上或下方,并不必然是指设置在基准部分的朝向重力的相反方向的上端。
此外,在整个描述中,当一部分被称为“包括”某一部件时,其是指该部分能够进一步包括其他部件,不排除其他部件,除非有相反表述。
此外,在整个描述中,当称“平面”时,其是指当从上侧观察目标部分时,当称“剖面”时,其是指当从垂直切割的剖面的一侧观察目标部分时。
图1是示出袋型电池单元的分解透视图。
参照图1,可通过将电极组件200容纳在电池壳体300内,然后密封壳体来制造袋型电池单元100。电极组件200可包括正极、负极、以及设置在正极与负极之间的隔膜。电极组件200可以是堆叠型电极组件、果冻卷型电极组件、或堆叠/折叠型电极组件。
正极和负极的每一个包括电极接片210t,分别与电极接片210t连接的电极引线210和220可暴露到电池壳体300的外部。可通过将电极组件200中包括的电极片的箔延伸来形成电极接片210t。此外,电极引线210和220可分别在被引线膜350覆盖的状态下位于密封部300S1和300S2中,从而确保密封性和绝缘性。
电池壳体300由层压片构成,并且可包括用于热熔合的树脂层和用于防止材料渗透的金属层。电池壳体300可包括上壳体310和下壳体320。
可在上壳体310和下壳体320的每一个中形成能够安放电极组件200的凹形的容纳部300ST。可分别沿着上壳体310和下壳体320的容纳部300ST的外周设置密封部300S1和300S2。上壳体310的密封部300S1和下壳体320的密封部300S2可彼此热熔合以形成密封部并且密封电池壳体300。
在本公开内容的另一个实施方式中,上壳体的一侧和下壳体的一侧可彼此连接成一体,并且其余三侧可被热熔合。此外,可仅在上壳体310和下壳体320的任意一个中形成容纳部300ST,并且另一个壳体可具有平面形状。
上述的电池壳体300可包括树脂层、金属层、封装片层等,以保护袋型二次电池。为此,需要将袋膜成形的工序。
图2是示出通过根据本公开内容实施方式的制造袋型电池单元的方法形成的压纹部的示图。
通过使用袋成形设备,将袋膜布置于模具单元上,然后利用按压单元中包括的按压部按压布置于模具单元上的袋膜的表面。然后,在按压部按压袋膜的状态下使按压部插入模具单元的成形凹槽中,由此可在袋膜的表面形成具有成形凹槽形状的电极组件容纳部500。
之后,为了在后续工序中投入袋膜,可如图2所示通过压纹工艺在袋膜的端部形成压纹部400。具体地,后续工序是指在电池封装过程中形成被供应至辊的袋,然后将电极组件放入袋中,进行密封工序,以及将切成片的袋安置在嵌套件上。此时,为了使袋准确地安置在嵌套件上,可识别压纹部400的形状,然后可执行自动校正。可在袋成形期间形成根据本实施方式的压纹部400。
图3是示出根据本公开内容实施方式的压纹形成单元的示图。
参照图3,为了形成根据本实施方式的压纹部,可使用包括在袋成形设备中的压纹冲压单元600。压纹冲压单元600可包括:压纹冲压部620,压纹冲压部620用于形成图2的压纹部400的凹入部;模具部640,模具部640用作供压纹冲压部620移动到对象物的通道;以及在模具部640内与压纹冲压部620对置的坯料保持件660。根据本实施方式的凹入部是沿着压纹部的边缘被冲压而成的部分,并且压纹部可基于冲压出的凹入部具有内圆形状和外圆形状。
图4是示出通过根据比较例的压纹工艺形成的压纹部的照片。图5是示出图4的压纹部的视觉识别率的示图。根据比较例的压纹工艺是在不使用图3的坯料保持件660的情况下通过压纹冲压部620形成压纹部的情况。
参照图4和图5,在根据比较例的压纹部40中,袋膜的底表面在形成凹入部70的工序中会被拉伸并以凸出形状向上凸出。当袋膜的底表面以这种方式向上凸出时,在对压纹部进行视觉(Vision)识别时会产生阴影,视觉识别率降低,使得与预存标准的匹配率会降低,如图5所示。
此外,由于压纹冲压部从图3的模具部640内的空白空间下降以形成凹入部,因此存在压纹冲压部无法以直线方式下降并且偏向一侧的可能性。因此,会不清晰地形成凹入部,因此视觉识别率会降低。
图6是示出通过根据本公开内容实施方式的压纹工艺形成的压纹部的照片。图7是示出图6的压纹部的视觉识别率的示图。
参照图6和图7,根据本实施方式的压纹部400可在压纹冲压部形成凹入部700的工序中处于坯料保持件按压袋膜的底表面的状态。此外,在形成压纹部400的步骤中,可在压纹冲压部与坯料保持件彼此对置的状态下使袋膜成形。以这种方式,由于在形成凹入部700的工序中坯料保持件按压压纹部400的底表面,因此可防止袋膜的底表面被拉伸并以凸出形状向上凸出。就是说,压纹部400的底表面可形成为平坦的。因此,在根据本实施方式的压纹部400中,基于冲压出的凹入部700清晰地显现出内圆形状740和外圆形状720。此时,在对凹入部700进行视觉检查时,可以清楚地识别,并且与预存标准的匹配率可表现为非常高。
尽管上面参照优选的实施方式示出和描述了本发明,但本公开内容的范围不限于此,本领域技术人员使用所附权利要求书中描述的本发明的基本构原理设计的诸多其他修改和改进落入本公开内容的精神和范围内。
[参考标号描述]
400:压纹部
600:压纹冲压单元
620:压纹冲压部
640:模具部
660:坯料保持件
700:凹入部。
Claims (10)
1.一种制造袋型电池单元的方法,包括:
通过使用压纹冲压部在袋膜的一部分中形成压纹部。
2.根据权利要求1所述的制造袋型电池单元的方法,其中:
所述压纹冲压部沿着所述压纹部的边缘冲压以形成凹入部。
3.根据权利要求1所述的制造袋型电池单元的方法,其中:
所述压纹部基于冲压出的所述凹入部被视觉(Vision)识别为内圆形状和外圆形状。
4.根据权利要求1所述的制造袋型电池单元的方法,其中:
形成所述压纹部进一步包括在所述压纹冲压部与坯料保持件彼此对置的状态下使袋膜成形。
5.根据权利要求4所述的制造袋型电池单元的方法,其中:
形成所述压纹部进一步包括在所述坯料保持件按压所述压纹部的底表面的同时,通过所述压纹冲压部对所述袋膜进行冲压。
6.根据权利要求5所述的制造袋型电池单元的方法,其中:
所述压纹部的所述底表面形成为平坦的。
7.根据权利要求1所述的制造袋型电池单元的方法,其中:
在所述袋型电池单元的袋成形期间形成所述压纹部。
8.一种用于形成袋膜的容纳部的袋成形设备,所述袋成形设备包括:
压纹冲压部;
用作供所述压纹冲压部移动的通道的模具部;和
在所述模具部内与所述压纹冲压部对置的坯料保持件。
9.根据权利要求8所述的袋成形设备,其中:
所述压纹冲压部在所述袋膜中形成具有凹入部的压纹部,并且
所述压纹部基于所述凹入部具有外圆形状和内圆形状。
10.根据权利要求8所述的袋成形设备,其中:
所述坯料保持件按压所述袋膜的与所述压纹部对应的底表面,使得所述压纹部的底表面是平坦的。
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CN104641381A (zh) * | 2012-09-21 | 2015-05-20 | 生物梅里埃公司 | 用于检测圆形标签中的2d条形码的方法和系统 |
KR20190009446A (ko) * | 2017-07-18 | 2019-01-29 | 주식회사 비에스피 | 보안필름 제조방법 및 이를 이용한 보안필름 |
KR20190038094A (ko) * | 2017-09-29 | 2019-04-08 | 에스케이이노베이션 주식회사 | 이차 전지의 파우치 성형 장치 |
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