METHOD FOR ESTIMATING DETERIORATION IN POWER STORAGE MEANS, POWER SOURCE DEVICE, AND RAILWAY VEHICLE

摘要

PROBLEM TO BE SOLVED: To accurately grasp replacement time of power storage means by accurately and simply estimating degrading of resistance in the power storage means and to achieve stable operation without imposing an overload to the power storage means.

SOLUTION: In a railway vehicle which travels according to a predetermined operation method, a current value, a surface temperature, a voltage, and an environment temperature in the power storage means while travelling on a railroad are recorded. A difference ΔV between the maximum voltage and the minimum voltage is compared with an initial value ΔVini for calculating deterioration in comparison with a threshold value ΔVth, the deterioration is reflected to vehicle control and a degree of deterioration and a checkup notice are displayed in a control platform.

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