CHARGE AND DISCHARGE DISTRIBUTION CONTROL DEVICE, CHARGE AND DISCHARGE DISTRIBUTION CONTROL SYSTEM, AND CHARGE AND DISCHARGE DISTRIBUTION CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To realize a long life of each secondary battery while miniaturizing deterioration of each secondary battery which has a different kind and is under a different environment.SOLUTION: A charge and discharge distribution control device that transmits a charge and discharge command to a plurality of secondary units including a secondary battery connected through an electric power converter in an electric power system in response to a charge and discharge request amount, comprises: a deterioration speed conductive part; a distribution rate determination part; a charge and discharge amount calculation part; and a charge and discharge command part. The deterioration speed conductive part calculates deterioration speed of each secondary battery on the basis of an inner temperature of each secondary battery and deterioration speed characteristics of each secondary battery. The distribution rate determination part sets a larger distribution rate to the secondary battery in which the deterioration speed is smaller in response to an output signal of the deterioration speed conductive part. The charge and discharge amount calculation part compares each value obtained by multiplying the distribution rate of each secondary battery in depend on the charge and discharge request amount in response to the output signal of the distribution rate determination part with the maximum charge and discharge amount of each secondary battery, and calculates a charge and discharge command value of each secondary battery. The charge and discharge command part transmits the charge and discharge command on the basis of the charge and discharge command value to each of the plurality of secondary battery units in response to the output signal of the charge and discharge calculation part.SELECTED DRAWING: Figure 6