Cooling device for battery power source

摘要

A battery power source comprising a cooling device and a large number of battery modules (9), constituted by a plurality of single cells (7) connected in a row electrically and mechanically in series, arranged parallel to each other and held in a holder casing (10) wherein air is forcibly made to flow in one direction within said holder casing (10) thereby cooling the large number of battery modules (9) in said holder casing (10), the direction of flow of the air is in a direction at right angles to the longitudinal direction of said battery modules (9), and wherein means for flow alignment are arranged within said holder casing (10) such that the flow speed of the air flowing through said holder casing (10) is faster on the downstream side than on the upstream side.