The present invention aims to reliably prevent overcharge by carrying out charging in just proportion during charging periods. A charging apparatus 1 for charging a secondary cell 22 by supplying a charging current Ic thereto is provided with a discharge amount detector 62 for detecting an amount of power discharged from the secondary cell in a non-charging state, a charge amount detector 60 for detecting an amount of power charged into the secondary cell in a charging state, and a charger controller 10 for stopping charging when the amount of charged power (charge amount Wc) becomes equal to the amount of discharged power (discharge amount W C ) during a charging period.
申请公布号
EP2249451(A1)
申请公布日期
2010.11.10
申请号
EP20090715764
申请日期
2009.02.16
申请人
IWASAKI ELECTRIC CO., LTD;TOKYO RECTIFIER CO., LTD.;JPS CO., LTD.