| 摘要 |
PROBLEM TO BE SOLVED: To avoid the possibility of the life of a storage cell being shortened owing to heating of an electric power conversion circuit in one where the electric power conversion circuit of a converter section, etc., and the storage cell are accommodated in a storage battery unit casing. SOLUTION: A storage battery unit BM is constructed by accommodating in a unit casing BC a plurality of storage cells 11, 11,... for charging by receiving electric power obtained by converting power supply electric power from a commercial power supply by an electric power conversion circuit 43 while discharging to supply secondary electric power to a compressor motor. In the unit casing BC the electric power conversion circuit section 43 is disposed on the storage cells 11, 11,.... A fresh air introduction inlet 61a is formed in a lower portion of the unit easing BC with arm exhaust outlet 6 formed in an upper portion of the unit casing BC. The electric power conversion circuit section 43 and the storage cells 11, 11,... are cooled with air introduced into a space B in the casing. |
