公开(公告)号：US09490642B2

公开(公告)日：2016-11-08

申请号：US14399716

申请日：2013-06-07

Applicant: LG CHEM, LTD.

Inventor： Dae Hwan Kim ,  Seung Hun Jung

IPC: H02J7/00 ,  H02J7/04 ,  H01M10/44 ,  H01M10/052

CPC classification number: H02J7/0052 ,  H01M10/052 ,  H01M10/446 ,  H02J7/0077 ,  H02J7/041 ,  H02J7/045

Abstract: Disclosed herein is a charging method of a secondary battery including a first charging step of charging the secondary battery at a first C-rate from an initial charge voltage to a first charge voltage and a second charging step of charging the secondary battery to a target voltage while gradually decreasing a C-rate within a range not exceeding the first C-rate after the voltage of the secondary battery reached the first charge voltage. Consequently, it is possible to prevent deterioration of the battery, thereby improving lifespan characteristics of the battery.

Abstract translation: 本文公开了一种二次电池的充电方法，其包括：以从初始充电电压到第一充电电压的第一C速率对二次电池充电的第一充电步骤和将二次电池充电至目标电压的第二充电步骤 同时在二次电池的电压达到第一充电电压之后，在不超过第一C速率的范围内逐渐降低C率。 因此，可以防止电池的劣化，从而提高电池的寿命特性。

公开(公告)号：US09825324B2

公开(公告)日：2017-11-21

申请号：US14758725

申请日：2014-12-15

Applicant: LG CHEM, LTD.

Inventor： Seung Hun Jung ,  Dal Mo Kang

IPC: H01M10/02 ,  H01M2/30 ,  H01M2/26 ,  H01M10/04 ,  H01M10/0585

CPC classification number: H01M10/02 ,  H01M2/26 ,  H01M2/266 ,  H01M2/30 ,  H01M10/04 ,  H01M10/0463 ,  H01M10/0585

Abstract: An electrode assembly includes a unit cell A in which a first electrode 110, a second electrode 120, and a separator 130 disposed between the first and second electrodes 110 and 120 are stacked on each other or a structure in which the unit cells A are repeatedly stacked with the separator therebetween. A first electrode tab 111 protrudes from the first electrode 110, and a second electrode tab 121 protrudes from the second electrode 120, and the electrodes tabs 111 and 121 have widths that gradually decrease in directions in which the electrodes tabs 111 and 121 protrude outward from the electrodes 110 and 120, respectively.

公开(公告)号：US10044070B2

公开(公告)日：2018-08-07

申请号：US14758727

申请日：2014-12-15

Applicant: LG CHEM, LTD.

Inventor： Seung Hun Jung ,  Dal Mo Kang

IPC: H01M2/00 ,  H01M10/42 ,  H01M2/10

CPC classification number: H01M10/4235 ,  H01M2/1016 ,  H01M2/1061 ,  H01M2/1094 ,  H01M2200/00

Abstract: The present invention relates to a battery module. The battery module includes a battery cell, a module case in which the battery cell is built, and a flame retardant filled in the module case. Thus, when the battery module is damaged, an insulation film is formed on the damaged portion to prevent fire or explosion from occurring.

公开(公告)号：US20150123621A1

公开(公告)日：2015-05-07

申请号：US14399716

申请日：2013-06-07

Applicant: LG CHEM, LTD.

Inventor： Dae Hwan Kim ,  Seung Hun Jung

IPC: H02J7/00

CPC classification number: H02J7/0052 ,  H01M10/052 ,  H01M10/446 ,  H02J7/0077 ,  H02J7/041 ,  H02J7/045

Abstract: Disclosed herein is a charging method of a secondary battery including a first charging step of charging the secondary battery at a first C-rate from an initial charge voltage to a first charge voltage and a second charging step of charging the secondary battery to a target voltage while gradually decreasing a C-rate within a range not exceeding the first C-rate after the voltage of the secondary battery reached the first charge voltage. Consequently, it is possible to prevent deterioration of the battery, thereby improving lifespan characteristics of the battery.

Abstract translation: 本文公开了一种二次电池的充电方法，其包括：以从初始充电电压到第一充电电压的第一C速率对二次电池充电的第一充电步骤和将二次电池充电至目标电压的第二充电步骤 同时在二次电池的电压达到第一充电电压之后，在不超过第一C速率的范围内逐渐降低C率。 因此，可以防止电池的劣化，从而提高电池的寿命特性。