초록 ▼

A power source has a battery pack housing a plurality of interconnected battery modules wherein a plurality of single cells are connected serially. A blower is provided which forces air through the battery pack to maintain the battery modules at a correct temperature. A controller controls the blowe

A power source has a battery pack housing a plurality of interconnected battery modules wherein a plurality of single cells are connected serially. A blower is provided which forces air through the battery pack to maintain the battery modules at a correct temperature. A controller controls the blower in accordance with data provided by sensors which detect voltage, current and temperature. The controller outputs the data and a state of charge. A charging/discharging current circuit includes a relay for interrupting charging and discharging of the battery modules in the event of failure and also includes a rush current prevention resistor and a current sensor. The controller permits the power source to be maintained in a correct operating condition wherein neither overcharging nor undercharging occurs.

대표청구항 ▼

[ What is claimed is:] [1.]1. 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

[ What is claimed is:] [1.]1. 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.