Secondary battery and electrode lead assembly applied thereto

    公开(公告)号:US10026949B2

    公开(公告)日:2018-07-17

    申请号:US14650094

    申请日:2014-09-24

    申请人: LG Chem, Ltd.

    摘要: A secondary battery according to the present disclosure includes an electrode assembly, a first lead plate connected to the electrode assembly, a second lead plate disposed facing the first lead plate with a gap therebetween such that at least a portion of the second lead plate overlaps with at least a portion of the first lead plate, a metal bridge disposed within the gap to connect the first lead plate and the second lead plate, a first sealant disposed within the gap further outside than the metal bridge, a pouch case to receive the electrode assembly such that the second lead plate is drawn outside, and a second sealant interposed respectively between an inner surface of the pouch case and the first lead plate and between the inner surface of the pouch case and the second lead plate.

    CONNECTING ELEMENT FOR SECONDARY BATTERY, AND BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME
    2.
    发明申请
    CONNECTING ELEMENT FOR SECONDARY BATTERY, AND BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME 有权
    二次电池连接元件,电池模块和包括其的电池组

    公开(公告)号:US20140038471A1

    公开(公告)日:2014-02-06

    申请号:US13963373

    申请日:2013-08-09

    申请人: LG CHEM, LTD.

    IPC分类号: H01M2/10

    摘要: A connecting element for a secondary battery is installed on a path of current flowing through a secondary battery to electrically connect components and includes a first metal plate having a first protrusion formed to protrude at one side end thereof from the center portion of the thickness direction thereof, a second metal plate located spaced apart from the first metal plate with a gap being formed therebetween and having a second protrusion formed to protrude at one side end thereof from the center portion of the thickness direction thereof and face the first protrusion, and an alloy bridge made of alloy material having a melting point lower than those of the first metal plate and the second metal plate and formed to fill the gap. The connecting element may ensure the safety of the secondary battery in use, minimize the increase of resistance caused by applying the connecting element, and be rapidly broken even though the connecting element is applied as a part with a relatively great thickness.

    摘要翻译: 用于二次电池的连接元件安装在流过二次电池的电流路径中以电连接部件,并且包括第一金属板,其具有形成为从其厚度方向的中心部分的一个侧端突出的第一突起 ,与所述第一金属板间隔开的第二金属板,其间形成有间隙,并且具有形成为从所述第一金属板的厚度方向的中心部突出的第二突起,并且与所述第一突起面接触, 由熔点低于第一金属板和第二金属板的熔点的合金材料制成的桥,形成为填充间隙。 连接元件可以确保二次电池在使用中的安全性,最小化施加连接元件引起的电阻的增加,并且即使连接元件作为相对较大厚度的部件被施加,也可以快速断开。

    CONNECTING ELEMENT FOR SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING THE SAME
    4.
    发明申请
    CONNECTING ELEMENT FOR SECONDARY BATTERY AND SECONDARY BATTERY COMPRISING THE SAME 有权
    连接二次电池的元件和包含该电池的二次电池

    公开(公告)号:US20150017507A1

    公开(公告)日:2015-01-15

    申请号:US14499647

    申请日:2014-09-29

    申请人: LG Chem, Ltd.

    IPC分类号: H01M2/20 H01M10/0525

    摘要: A connecting element for a secondary battery according to the present disclosure includes a metal plate having a recess groove, a soldering pattern having a lower melting point than the metal plate and formed within the recess groove, and an insulation layer formed on at least one surface among both surfaces of the metal plate, and covering an area where the soldering pattern is formed.According to the present disclosure, it is possible to interrupt an overcurrent quickly when the overcurrent occurs, and prevent secondary damage caused by a spark that may occur when the connecting element for the secondary battery is ruptured.

    摘要翻译: 根据本发明的用于二次电池的连接元件包括具有凹槽的金属板,具有比金属板低的熔点并形成在凹槽内的焊接图案,以及形成在至少一个表面上的绝缘层 在金属板的两个表面之间,并且覆盖形成焊接图案的区域。 根据本公开,可以在发生过电流时快速地中断过电流,并且防止当二次电池的连接元件破裂时可能发生的火花引起的二次损坏。

    SECONDARY BATTERY HAVING IMPROVED SAFETY
    5.
    发明申请

    公开(公告)号:US20180053976A1

    公开(公告)日:2018-02-22

    申请号:US15554340

    申请日:2016-04-22

    申请人: LG Chem, Ltd.

    摘要: A pouch type secondary battery includes an electrode assembly and a pouch sheath material including a first pouch portion and a second pouch portion. The pouch-type secondary battery includes dual electrode leads wherein a first electrode lead is attached to the first pouch portion and a second electrode lead is attached to the second pouch portion. In the pouch-type secondary battery, electric current is interrupted by using a volumetric swelling phenomenon caused by swelling or pressure generated upon overcharge so that the battery may be prevented from being further charged. In addition, when pressure is increased by an additional reaction, venting occurs toward the inner lead portion of each of the dual electrode leads. As a result, it is possible to increase the stability of a battery cell, module and a pack received in the pouch, and thus to improve the life of a battery.

    OVERCURRENT SHUT-OFF DEVICE AND SECONDARY BATTERY SYSTEM COMPRISING THE SAME
    7.
    发明申请
    OVERCURRENT SHUT-OFF DEVICE AND SECONDARY BATTERY SYSTEM COMPRISING THE SAME 有权
    过电流关断装置和包含该装置的二次电池系统

    公开(公告)号:US20150044528A1

    公开(公告)日:2015-02-12

    申请号:US14521559

    申请日:2014-10-23

    申请人: LG Chem, Ltd.

    IPC分类号: H01M2/34 H01M10/0525

    摘要: An overcurrent shut-off device according to an exemplary embodiment of the present disclosure includes a switching unit connected to both ends of a secondary battery, the switching unit being turned on by pressure caused by a swelling phenomenon occurring in the secondary battery, and a fusing unit, as a component installed on a path of an electric current flowing through the secondary battery, being ruptured when the switching unit is turned on, to interrupt the electric current flowing through the secondary battery.According to an aspect of the present disclosure, by a turn-on operation in response to a swelling phenomenon of a secondary battery caused by a short circuit and the like, a connecting component installed on a path of an electric current flowing through a secondary battery is ruptured quickly to interrupt an overcurrent, thereby ensuring safety of the secondary battery in use.

    摘要翻译: 根据本公开的示例性实施例的过电流切断装置包括连接到二次电池的两端的开关单元,所述开关单元由于在二次电池中发生的膨胀现象引起的压力而导通,以及熔断器 单元作为安装在流过二次电池的电流路径上的部件在开关单元导通时破裂,以中断流过二次电池的电流。 根据本公开的一个方面,通过响应于由短路等引起的二次电池的膨胀现象的接通操作,安装在流过二次电池的电流路径上的连接部件 快速断开以中断过电流,从而确保二次电池的使用安全。

    SECONDARY BATTERY, COMPONENT FOR THE SAME AND METHOD FOR MANUFACTURING THE SAME
    8.
    发明申请
    SECONDARY BATTERY, COMPONENT FOR THE SAME AND METHOD FOR MANUFACTURING THE SAME 有权
    二次电池,其组件及其制造方法

    公开(公告)号:US20140011060A1

    公开(公告)日:2014-01-09

    申请号:US14014582

    申请日:2013-08-30

    申请人: LG Chem, Ltd.

    IPC分类号: H01M2/12

    摘要: A secondary battery includes an electrode assembly having an electrode tab; an electrode lead attached to the electrode tab and having at least one lead hole; a pouch case for accommodating the electrode assembly so that the electrode lead is drawn out; and a sealing tape interposed between the electrode lead and the inner surface of the pouch case and having a venting pattern portion formed at a region corresponding to the lead hole. Therefore, when gas is generated inside a pouch case of a secondary battery due to an abnormal circumstance, for example when an overcurrent flows at the secondary battery since a protective circuit does not operate normally, a sealed state of the pouch case is rapidly released, thereby ensuring the safety of the secondary battery in use.

    摘要翻译: 二次电池包括具有电极片的电极组件; 连接到所述电极接线片并具有至少一个引线孔的电极引线; 用于容纳电极组件以便引出电极引线的小袋壳体; 以及插入在电极引线和袋壳体的内表面之间的密封带,并且具有形成在对应于引线孔的区域的通气图案部分。 因此,当由于异常环境而在二次电池的袋子壳体内产生气体时,例如当保护电路不能正常地操作时,由于二次电池的过电流流动时,袋壳体的密封状态被迅速地释放, 从而确保使用中的二次电池的安全性。

    Secondary battery having improved safety

    公开(公告)号:US10276902B2

    公开(公告)日:2019-04-30

    申请号:US15554340

    申请日:2016-04-22

    申请人: LG Chem, Ltd.

    摘要: A pouch type secondary battery includes an electrode assembly and a pouch sheath material including a first pouch portion and a second pouch portion. The pouch-type secondary battery includes dual electrode leads wherein a first electrode lead is attached to the first pouch portion and a second electrode lead is attached to the second pouch portion. In the pouch-type secondary battery, electric current is interrupted by using a volumetric swelling phenomenon caused by swelling or pressure generated upon overcharge so that the battery may be prevented from being further charged. In addition, when pressure is increased by an additional reaction, venting occurs toward the inner lead portion of each of the dual electrode leads. As a result, it is possible to increase the stability of a battery cell, module and a pack received in the pouch, and thus to improve the life of a battery.