CN115398692A - 电极切割装置和包括该电极切割装置的电极制造设备 - Google Patents
电极切割装置和包括该电极切割装置的电极制造设备 Download PDFInfo
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Abstract
本发明涉及一种电极切割装置,该电极切割装置包括配置成切割电极片材的切割单元和配置成固定电极片材的固定单元,其中,切割单元包括配置成通过剪切来切割电极片材的切割器和配置成使切割器移动以垂直于电极片材的表面的切割器升降部,并且固定单元包括配置成按压电极片材以将电极片材固定的夹持器、配置成驱动所述夹持器以使所述夹持器移动的驱动部以及配置成监测驱动部的传感器,由此可以快速且准确地检查空气是否从驱动夹持器的驱动部泄漏。
Description
技术领域
本申请要求于2021年1月29日提交的第2021-0013007号韩国专利申请的优先权,通过引用将所述韩国专利申请的全文并入于此。
本发明涉及一种电极切割装置和包括该电极切割装置的电极制造设备。更具体地,本发明涉及一种能够监测配置成固定电极片材的夹持器,从而防止不良的电极切割的电极切割装置和包括该电极切割装置的电极制造设备。
背景技术
随着锂二次电池的容量增加和能量密度提高的加速,锂二次电池已被用作诸如车辆或电力存储系统之类的中型和大型装置以及诸如便携式电子装置之类的小型装置的能源。
可以使用将电极组件容纳在电池壳体中并气密密封电池壳体的方法来制造锂二次电池,电极组件配置成具有其中正极、隔膜和负极顺序堆叠的结构。
电极组件包括配置成具有其中第一电极和隔膜堆叠的结构的单极电池,配置成具有其中第一电极、隔膜和第二电极堆叠的结构的单电池,和配置成具有其中第一电极、隔膜、第二电极、隔膜和第三电极堆叠的结构的双电池。
通过将电极混合物施加到由铜、铝或镍制成的薄电极片材的一个表面或相对表面上,将其干燥,按压,并将电极片材切割成单元电极来制造构成电极组件的每个电极。
正极和负极(其每一个都是如此制造的单元电极)以隔膜置于其间的状态堆叠和层压,由此制造单元电池。
如果在将电极片材切割成单元电极的过程中没有将正极和负极切割成具有均匀的尺寸,则以隔膜置于其间的状态堆叠的正极和负极的周边可能彼此不平行。
另外,如果当从电极片材上切割某一单元电极时发生不良切割,则可能发生连续的不良电极切割。在这种情况下,工人需要中断电极切割过程并采取措施来校正不良切割。
当空气从驱动配置成固定电极片材的夹持器的气缸泄漏时,可能发生这种不良切割,由此夹持器的按压力减小。通常,使用通过工人的触摸来检查空气泄漏的方法。
该方法增加了电池制造过程中的停机时间,从而降低了产量。
与此相关,专利文献1公开了一种配置成形成电极接片的电极切割装置,其中,电极切割装置包括第一切割单元和第二切割单元,第一切割单元和第二切割单元配置成在彼此交叉的同时移动以切割接片形成部。
专利文献1公开了设置在接片形成部下方的第一切割单元向上移动,设置在接片形成部上方的剥离器向下移动以便与接片形成部的上表面紧密接触,并且第二切割单元向下移动,其中切割单元彼此交叉以形成电极接片,但是没有公开用于调节固定电极接片的剥离器的力的技术。
因此,需要能够在将电极片材切割成单元电极时容易地检查配置成固定电极片材的夹持器的按压力的技术,从而防止不良的电极切割。
(现有技术文献)
(专利文献1)韩国注册专利公开第1751008号(2017.06.20)
发明内容
技术问题
考虑到上述问题而作出本发明,本发明的目的是提供一种电极切割装置和包括该电极切割装置的电极制造设备,该电极切割装置能够稳定地固定电极片材,使得在层压过程中堆叠的电极彼此对齐。
技术方案
根据本发明的实现上述目的的电极切割装置包括:配置成切割电极片材的切割单元和配置成固定电极片材的固定单元,其中切割单元包括切割器和切割器升降部,切割器配置成通过剪切来切割电极片材,切割器升降部配置成使切割器移动以便于垂直于电极片材的表面,并且固定单元包括:夹持器,配置成按压电极片材以将电极片材固定;驱动部,配置成驱动夹持器以使夹持器移动;以及传感器,配置成监测驱动部。
在根据本发明的电极切割装置中,切割器可以配置成具有双刃结构,其中切割器的高度在横向方向上从其中间到相对端逐渐增加。
在根据本发明的电极切割装置中,切割器可包括位于电极片材上方的上切割器和位于电极片材下方的下切割器,下切割器配置成在与向下移动的上切割器交叉的同时切割电极片材。
在根据本发明的电极切割装置中,驱动部可以由气缸驱动。
在根据本发明的电极切割装置中,夹持器的宽度可以大于电极片材的宽度。
在根据本发明的电极切割装置中,突起可以形成在夹持器的按压表面上。
在根据本发明的电极切割装置中,橡胶涂层可以被添加到夹持器的按压表面。
在根据本发明的电极切割装置中,传感器可以是气动计量传感器,并且传感器可以连续地或周期性地监测气缸的压力。
在根据本发明的电极切割装置中,传感器可以可拆卸地连接到驱动部。
另外,本发明提供了一种包括电极切割装置的电极制造设备。具体地,该电极制造设备包括电极切割装置、配置成供应隔膜的隔膜供应单元、配置成层压附接到隔膜的正极和负极的层压装置、配置成切割层压堆叠的隔膜的隔膜切割单元、以及配置成检查单元电池的对准的检查单元,在隔膜上将设置切割后的正极和切割后的负极,并且电极切割装置包括正极切割装置和负极切割装置。
在根据本发明的电极制造设备中,当由检查单元检查的单元电池的对准不正确时,可以使用正极切割装置的传感器和负极切割装置的传感器来检查驱动部的压力。
另外,本发明可以提供上述解决方法的各种组合。
有益效果
从上面的描述中可以明显看出,根据本发明的电极切割装置包括能够监测气缸压力的传感器,该传感器是驱动配置成固定电极片材的夹持器的装置,因此可以在没有工人干预的情况下检查空气是否从气缸泄漏。
此外,可以使用传感器实时检查气缸的压力,由此可以防止连续的不良电极切割,因此可以降低缺陷率。
此外,在与电极片材接触的夹持器的下表面上执行防滑处理,由此可以增加电极片材的固定力。
附图说明
图1是根据本发明的电极切割装置的侧视图。
图2是电极切割装置的透视图。
图3是顺序示出使用包括上切割器和下切割器的切割器切割电极的工序的侧视图。
图4是切割器的透视图。
图5是夹持器的透视图。
图6是电极制造设备的示意图。
具体实施方式
现在,将参考附图详细描述本发明的优选实施方式,使得本发明所属领域的普通技术人员可以容易地实现本发明的优选实施方式。然而,在详细描述本发明的优选实施方式的操作原理时,当可能模糊本发明的主题时,将省略对本文所包含的已知功能和配置的详细描述。
此外,在整个附图中使用相同的附图标记来表示执行类似功能或操作的部件。在整个说明书中称一个部件连接到另一个部件的情况下,不仅该一个部件可以直接连接到另一个部件,而且该一个部件可以经由另一个部件间接连接到另一个部件。另外,包括某个元件并不意味着排除其他元件,而是意味着可以进一步包括这些元件,除非另有说明。
另外,除非特别限制,否则通过限制或添加来体现元件的描述可以应用于所有发明,并且不限制特定发明。
此外,在本申请的发明内容和权利要求书中,单数形式旨在包括复数形式,除非另有说明。
此外,在本申请的发明内容和权利要求书中,除非另有说明,否则“或”包括“和”。因此,“包括A或B”是指三种情况,即,包括A的情况、包括B的情况以及包括A和B的情况。
在下文中,将参照附图详细描述本发明的实施方式。
图1是根据本发明的电极切割装置的侧视图,图2是电极切割装置的透视图。
参照图1和2,电极片材310被传送到支撑部320的上表面,并且通过固定单元200将电极片材310固定,由此停止电极片材的传送。在这种状态下,电极片材310由切割单元100切割,从而电极311被排出。
电极311设置在隔膜330上,以便彼此间隔开。
根据本发明的电极切割装置包括配置成切割电极片材310的切割单元100和配置成固定电极片材310的固定单元200。
切割单元100包括切割器110和切割器升降部120,切割器110配置成在被向下移动以垂直于电极片材的同时通过剪切来切割电极片材310,切割器升降部120配置成移动切割器110以垂直于电极片材310的表面。
固定单元200包括:夹持器210,配置成按压电极片材310以便将电极片材310固定;驱动部220,配置成驱动夹持器210以使夹持器210移动;以及传感器230,配置成监测驱动部220。
夹持器210向上和向下移动以便垂直于电极片材310。也就是说,当夹持器向下移动时,电极片材310被固定到支撑部320上,并且当夹持器210向上移动时,电极片材310的固定状态被释放,并且电极片材310被传送。
或者,夹持器可以向上和向下移动,并且同时或随后可以在平行于电极片材的传送方向M的方向向前和向后移动。
驱动部220由气缸驱动,并且夹持器可以通过增加或减少气缸的气压来驱动。
另外,切割器升降部120可以通过增加或减少气缸的气压来驱动。
传感器230可以是气动计量传感器,并且传感器230可以连续监测气缸的压力。或者,可以设定测量时间,使得传感器230可以周期性地监测气缸的压力。
通常,切割单元和固定单元设置成彼此相邻,或者彼此整体组装。由于切割单元产生的振动,空气可能从气缸泄漏,从而气缸的气压可能降低。在这种情况下,固定单元施加到电极片材的力可能低于预定值,由此电极片材可能不能被稳定地固定,因此电极片材可能在其移动方向上移动。
如果切割单元在这种状态下切割电极片材,则可能发生不良切割,其中电极片材的长度在其转移方向M上发生偏差。结果,当电极堆叠以便层压时,可能发生电极之间的未对准。
另外,只要不停止电极切割装置,就可以连续地制造切割不良的电极,由此可能降低产量。
因此,当发生这种不良切割时,重要的是快速检测这种不良切割并采取适当的措施。
因此,在本发明中,可以将配置成测量驱动部220的气压的传感器230连接到驱动部220,由此可以快速且准确地检测驱动部的气压是否改变。
在本发明中,夹持器210的宽度a1可以大于电极片材的宽度a2,以便确保固定电极片材310的稳定性。
驱动部220在横向方向上添加到夹持器230的相对端中的每个,以便均匀地按压夹持器。
在具体示例中,传感器230可以可拆卸地连接到驱动部220,并且可以使用单个传感器检查大量驱动部是否有缺陷。
图3是顺序示出使用切割器切割电极的工序的侧视图,该切割器包括上切割器和下切割器。
参照图3,示出了使用电极切割装置切割电极片材310的工序,该电极切割装置包括切割单元100和包括传感器230的固定单元200。
然而,图3中所示的切割器110包括位于电极片材310上方的上切割器111和位于电极片材310下方的下切割器112,并且下切割器配置成切割电极片材310,同时穿过向下移动的上切割器111并将电极311排出。
上切割器111和下切割器112之间的距离优选为大约0。上切割器111的左表面和下切割器112的右表面相对于彼此滑动,由此切割电极片材310。
图4是切割器的透视图。
参照图4,用作上切割器的切割器110配置成具有双刃结构,其中切割器的高度H在横向方向W上从其中间到相对端逐渐增加。
与此不同,如果切割器的高度均匀,则切割力减小,并且随着电极片材的宽度增加,难以实现与下部切割器的平行。因此,如图4所示,使用双刃结构以增加切割力。
图5是夹持器的透视图。
参照图5,夹持器210执行稳定地固定电极片材的功能。为了有效地执行该功能,可以在夹持器的与电极片材紧密接触的按压表面上形成突起240。或者,可以在夹持器的按压表面上形成橡胶涂层250。
图6是电极制造设备的示意图。
参照图6,电极制造设备包括:正极切割装置400,配置成切割正极片材以将正极排出;负极切割装置500,配置成切割负极片材以将负极排出;隔膜供应单元600,配置成供应隔膜330,在隔膜330上将设置切割后的正极315和切割后的负极316;层压装置700,配置成层压附接到隔膜的正极和负极;隔膜切割单元800,配置成切割层压堆叠的隔膜;以及检查单元900,配置成检查单元电池350的对准。
正极切割装置400和负极切割装置500包括传感器430和530,它们配置成分别监测夹持器410和510的压力。当由检查单元900检查的单元电池350的正极和负极未对准时,可以使用正极切割装置400的传感器430和负极切割装置500的传感器530来检查驱动部的压力。
如果驱动部的压力偏离预定范围,则可以立即中断电极制造工序,以便停止产生有缺陷的电极。
在本发明中,如上所述,包括配置成监测驱动夹持器的气缸的压力的传感器,使得在电极片材被稳定地固定的状态下切割电极片材,由此可以在没有工人干预的情况下快速且准确地检查是否生产出有缺陷的电极。
本发明所属领域的技术人员将理解,基于以上描述,在本发明的范畴内,各种应用和修改是可行的。
(附图标记的描述)
100:切割单元
110:切割器
111:上切割器
112:下切割器
120:切割器升降部
200:固定单元
210,410,510:夹持器
220:驱动部
230,430,530:传感器
240:突起
250:橡胶涂层
310:电极片材
311:电极
315:正极
316:负极
320:支撑部
330:隔膜
350:单元电池
400:正极切割装置
500:负极切割装置
600:隔膜供应单元
700:层压装置
800:隔膜切割单元
900:检查单元
工业实用性
从上面的描述中可以明显看出,根据本发明的电极切割装置包括能够监测气缸压力的传感器,该传感器是驱动配置成固定电极片材的夹持器的装置,因此可以在没有工人干预的情况下检查空气是否从气缸泄漏。
此外,可以使用传感器实时检查气缸的压力,由此可以防止连续的不良电极切割,因此可以降低缺陷率。
此外,在与电极片材接触的夹持器的下表面上执行防滑处理,由此可以增加电极片材的固定力。
Claims (12)
1.一种电极切割装置,包括:
切割单元,配置成切割电极片材;以及
固定单元,配置成固定所述电极片材,其中,所述切割单元包括:
切割器,配置成通过剪切来切割所述电极片材;以及
切割器升降部,配置成使所述切割器移动以垂直于所述电极片材的表面,
其中,所述固定单元包括:
夹持器,配置成按压所述电极片材以便将所述电极片材固定;
驱动部,配置成驱动所述夹持器以使所述夹持器移动;以及
传感器,配置成监测所述驱动部。
2.根据权利要求1所述的电极切割装置,其中所述切割器配置成具有双刃结构,在所述双刃结构中,所述切割器的高度在横向方向上从所述切割器的中间到所述切割器的相对端逐渐增加。
3.根据权利要求1所述的电极切割装置,其中所述切割器包括:
上切割器,位于所述电极片材上方;以及
下切割器,位于所述电极片材下方,所述下切割器配置成在与向下移动的所述上切割器交叉的同时切割所述电极片材。
4.根据权利要求1所述的电极切割装置,其中所述驱动部由气缸驱动。
5.根据权利要求1所述的电极切割装置,其中所述夹持器的宽度大于所述电极片材的宽度。
6.根据权利要求1所述的电极切割装置,其中在所述夹持器的按压表面上形成有突起。
7.根据权利要求1所述的电极切割装置,其中橡胶涂层被添加到所述夹持器的按压表面。
8.根据权利要求4所述的电极切割装置,其中所述传感器是气动计量传感器,并且
其中,所述传感器连续地或周期性地监测所述气缸的压力。
9.根据权利要求1所述的电极切割装置,其中所述传感器可拆卸地附接到所述驱动部。
10.一种电极制造设备,包括根据权利要求1至9中任一项所述的电极切割装置。
11.根据权利要求10所述的电极制造装置,其中,所述电极制造装置包括:
电极切割装置;
隔膜供应单元,配置成供应隔膜,切割后的正极和切割后的负极将设置在所述隔膜上;
层压装置,配置成层压附接到所述隔膜的所述正极和所述负极;
隔膜切割单元,配置成切割层压堆叠的所述隔膜;以及
检查单元,配置成检查单元电池的对准,
其中所述电极切割装置包括正极切割装置和负极切割装置。
12.根据权利要求11所述的电极制造设备,其中,当由所述检查单元检查的所述单元电池的对准不正确时,使用所述正极切割装置的传感器和所述负极切割装置的传感器检查所述驱动部的压力。
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