公开(公告)号：EP3267512A1

公开(公告)日：2018-01-10

申请号：EP16783449.8

申请日：2016-04-22

申请人： LG Chem, Ltd.

发明人： PARK, Jong-Pil ,  KIM, Jong-Hun ,  YANG, Jung-Hoon ,  CHO, Young-Suk

IPC分类号： H01M2/12 ,  H01M2/02 ,  H01M2/26 ,  H01M2/22 ,  H01M2/34

CPC分类号： H01M10/647 ,  H01M2/0212 ,  H01M2/08 ,  H01M2/1241 ,  H01M2/22 ,  H01M2/345 ,  H01M4/02 ,  H01M4/13 ,  H01M2004/021 ,  H01M2200/20

摘要： The present disclosure relates to a secondary battery having improved safety. The present disclosure provides a pouch type secondary battery which 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.

摘要翻译： 本公开涉及具有改进的安全性的二次电池。 本公开提供了一种袋型二次电池，其包括电极组件和包括第一袋部和第二袋部的袋套材料。 袋型二次电池包括双电极引线，其中第一电极引线连接到第一袋部分并且第二电极引线连接到第二袋部分。 在袋型二次电池中，通过使用由过度充电时产生的膨胀或压力引起的体积溶胀现象来中断电流，从而可以防止电池进一步充电。 另外，当通过另外的反应增加压力时，朝向每个双电极引线的内部引线部分发生排气。 结果，可以增加容纳在袋中的电池单元，模块和组件的稳定性，从而提高电池的寿命。

公开(公告)号：EP3486967A1

公开(公告)日：2019-05-22

申请号：EP17892214.2

申请日：2017-12-21

申请人： LG Chem, Ltd.

发明人： PARK, Jong-Pil ,  CHUNG, Geun-Chang ,  KO, Yo-Han

IPC分类号： H01M2/10 ,  H01M2/20 ,  H01M2/30 ,  H01M2/26 ,  H01M10/04

摘要： Disclosed herein is a battery cell configured such that an electrode assembly, including a positive electrode and a negative electrode stacked in the state in which a separator is interposed between the positive electrode and the negative electrode, is mounted in a pouch-shaped cell case, wherein electrode tabs protruding outwards from a plurality of electrode plates are coupled to a first lead end of an electrode lead, a second lead end of the electrode lead, which is an opposite end to the first lead end, is located on the outer surface of the cell case in the state of being parallel to the direction in which the electrode plates are stacked, and a lead body provided between the first lead end and the second lead end is located so as to face the outermost surface of the electrode assembly in the state of being maintained parallel to the direction in which the electrode plates are stacked.