BATTERY AND BATTERY SYSTEM

摘要

[Problem] To implement absorption of gas generated within a battery in a small space, at low cost, and with good efficiency. [Solution] A secondary battery (21) is provided with a housing (3) that seals a positive electrode (10) and negative electrode (11) in with an electrolyte and an explosion prevention valve (4) for allowing the high pressure gas within the housing (3) to escape when the pressure inside the housing (3) rises. A gas absorbing body (13) or (14) is also provided to absorb the high-pressure gas. The gas absorbing body (13) comprises a gas absorbing material (6) and a capsule (5) formed from a heat-meltable material and is provided within the housing (3). That capsule (5) contains the gas absorbing material (6). In addition, the gas absorbing body (14) comprises the gas absorbing material (6), a cartridge case (14a) that houses the gas absorbing material (6) internally, a gas inflow valve (14b) for allowing high-pressure gas to flow in, and a gas outflow valve (14c) for allowing high-pressure gas to flow out and may be provided outside of the housing (3).