BATTERY PACK HAVING AN IMPROVED SAFETY AND METHOD FOR INCREASING THE SAFETY OF BATTERY PACK

摘要

The present invention relates to a battery pack. In a battery pack which includes at least two electrochemical devices connected to each other and a pack frame which surrounds the electrochemical devices, the electrochemical device includes a current blocking member which blocks the current of a device by detecting the pressure change in the device, and a safety bent which is connected to the current blocking member and dissipates heat in the device by detecting the pressure change in the device. The battery pack further includes a capsule including sodium azide and a capsule including iron oxide inside the electrochemical device. The battery pack like this can further improve the safety of the battery pack.