DEVICE FOR PREVENTING DETERIORATION OF STORAGE CAPACITY AND RENEWING STORAGE CAPACITY OF SECONDARY CELL AND FOR MEASURING STORAGE AMOUNT FOR SECONDARY CELL

摘要

[Problem] In a secondary cell an increase in the number of discharges causes the cell electrode surface to be covered with a thin film of poorly conductive inactivated matter and the thin film crystallizes over time. The crystallization cuts off the charging route of electrochemical degradation caused by the charging current recharging does not renew the positive electrode and negative electrode and the storage capacity deteriorates. There is a need for preventing and renewing the deterioration caused by this cycle life and secondary cell complete charge termination and storage remainder information are important for the effective utilization of energy. [Solution] Provided is a device for: renewing by a thermomechanical effect generated by dielectric relaxation loss an electrode insulator inactivation film based on charging and discharging which are factors of deterioration of the storage capacity of a secondary cell; automatically seeking individual dielectric relaxation loss frequencies for typical secondary storage cells by an increase in a high frequency dependent charging current; selectively analyzing insulating films; incidentally learning of the termination of charging of the storage cell by the disconnection and connection of the dielectric relaxation loss frequencies; and giving a storage amount which is the state of charge of the current conductance of the dielectric relaxation loss frequencies.