Patent ID: 6225788
Filing Date: 2001-05-01
Classification: B60L,H01M,H02J,Y02E,Y02T

Abstract:
A battery power source device comprising:a battery pack having battery modules formed by connecting in series electrically and mechanically a plurality of single cells in the form of secondary cells, said battery modules being elongated in a longitudinal direction;said battery modules being held in a holder case in a three-dimensionally parallel arrangement and being electrically connected in series;cooling means for forcing coolant to flow in a direction orthogonal to the longitudinal direction of said battery modules;temperature detection means for detecting temperature of a first one of said battery modules at an upstream position of the coolant flow and temperature of a second one of said battery modules at a downstream position of the coolant flow; andmeans for calculating temperature of ones of said battery modules in a middle flow region between the upstream position and the downstream position based on the detected temperature of said first one and said second one of said battery modules and in accordance with a predetermined temperature distribution characteristic of said battery pack.