BATTERY PACK, AND DEVICE HAVING BATTERY MOUNTED THEREIN

摘要

A battery pack in which battery characteristics are not degraded in normal use and in which, even if the temperature of the battery rises and a high-temperature gas is released from the inside of the battery, spreading of fire to the entire battery pack is suppressed to reduce damage to it. The batter pack has the battery (3), a housing (2) for receiving the battery (3), and a thermal expansion section capable of, in response to heat applied to it, reducing the inner gap between the battery (3) and the housing (2).