Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jeong-Ho Ha

Song-Taek Oh

Hyo-Mi Kim

Hyeok-Moo Lee

Kyung-Min Lee

Han-Young Lee

Bum-Young Jung

A battery module improves safety by blocking current when the temperature rises, a battery pack includes the battery module, and a vehicle includes the battery pack. The battery module includes two or more battery cells, an electrode assembly having both ends respectively connected to one ends of electrode leads of opposite polarities in a pouch case together with an electrolyte and other ends of the electrode leads are exposed to an outside of the pouch case, wherein the electrode leads and a bus bar connecting a first battery cell and a second battery cell, wherein the bus bar comprises a metal layer and a material layer that is normally conductive but may act as a resistor when a temperature rises, and wherein the material layer comprises a gas generating material that is decomposed at a certain temperature or higher to generate a gas and increase resistance.

Battery module with improved safety, battery pack including the battery module and vehicle including the battery pack

Provided are a method and an apparatus for rapidly charging a battery, such that a battery can be rapidly charged while having an extended lifetime. The method for charging a battery according to the present invention charges a battery by starting from an initial charging rate higher than 1 C, while stepwise decreasing the charging rate, such that a negative electrode potential of the battery does not drop to a level less than or equal to 0V. An occurrence of Li-plating of a negative electrode of the battery can be prevented by the criteria for preventing the negative electrode potential from dropping to a level less than or equal to 0V, thereby providing an effect of rapidly charging the battery while extending the lifetime of the battery.

Method and apparatus for rapidly charging battery

Growing community of inventors

Daejeon, South Korea

Jeong-Ho Ha