Sk on Co., Ltd.

Sk Innovation Co., Ltd.

Lg Chem, Ltd

Lg Energy Solution, Ltd.

Won Seok Jeong

Tae Il Kim

Sung Yeop Kim

Hae Ryong Jeon

Geun Chang Chung

Jong Pil Park

Gyu Jin Chung

Sun Mo An

Myung Hoon Kim

Yo Han Ko

Seung Dong Lee

Provided is a battery pack including a battery module including one or more battery cells; an accommodating body accommodating the battery module; an accommodating cover coupled to the accommodating body to form, together with the accommodating body, a module accommodating space in which the battery module is accommodated; a fire extinguishing portion provided in the accommodating cover and supplying a fire extinguishing agent accommodated therein to the module accommodating space when the temperature of the module accommodating space is equal to or higher than a preset first temperature; and a variable portion which is located between the battery module and the fire extinguishing portion and of which shape or length is changed to expose the fire extinguishing portion toward the battery module when the temperature of the module accommodating space reaches a preset second temperature which is lower than the first temperature.

Battery pack

A battery cell includes an electrode assembly; a pouch-type cell case including an accommodation portion in which the electrode assembly is accommodated and a sealing portion formed in at least a portion of a circumference of the accommodation portion, a reinforcing member disposed on the sealing portion so that the sealing portion is in close contact with the accommodation portion, and a fixing member fixing the reinforcing member to the cell case.

Battery cell and battery module including the same

Provided is a pouch case including first and second accommodation portions formed to accommodate the electrode assembly, a sealing portion formed along an outer part of the pouch case to surround the first and second accommodation portions, and a connecting portion formed with the same depth as that of the first and second accommodation portion and configured to connect the first and second accommodation portions at a predetermined interval, wherein a protrusion protrudes in a direction toward the sealing portion at opposite ends of the connecting portion. Accordingly, in the pouch case, and a secondary battery and a secondary battery pack using the same, a perfect cooling structure is acquired by uniformly forming one side surface of the secondary battery, and thus, an effect of holding one side surface of the secondary battery to be close to a cooling plate to maximize cooling efficiency is achieved.

Pouch case, and secondary battery and secondary battery pack using the same

Provided are a pouch case and a secondary battery using the same. The pouch case includes a first receiving part and a second receiving part which are concavely formed; a sealing part formed along an outer portion of the pouch case so as to surround the first receiving part and the second receiving part; and a partitioning part formed between the first receiving part and the second receiving part and protruding from a bottom surface of each receiving part to partition the first receiving part and the second receiving part. As one side surface of the secondary battery in which an electrode assembly is received and packaged in the pouch case is formed in a plane form, a flat side surface is in close contact with a cooling plate, thereby maximizing cooling efficiency of the secondary battery.

Pouch case and secondary battery using the same

A pouch-type secondary battery includes an electrode assembly, and a pouch member in which the electrode assembly is accommodated and a sealing portion is formed on an edge of the pouch member, where the sealing portion protruding on one side surface extends in a diagonal direction towards the other side surface adjacent to the at least one side surface.

Pouch-type secondary battery and battery module including the same

Disclosed herein is a pouch-shaped secondary battery configured to have a structure in which a unit cell, including an electrode assembly constituted by 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, electrode tabs, and electrode leads, or a cell assembly, including two or more stacked unit cells, is mounted in a pouch-shaped case, wherein the pouch-shaped secondary battery includes a unidirectional structure in which electrode terminals oriented in two directions are changed to electrode terminals oriented in one direction. In the case in which a battery pack is constituted using a bidirectional cell, a large space is required, whereby the energy density of the battery pack is reduced. The disclosed pouch-shaped secondary battery has the effect of solving the above problem.

Growing community of inventors

Daejeon, South Korea

Won Seok Jeong