| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a charging method of a secondary battery which can expand an objective range of quick charging and short-time charging by constant-current charging, can accelerate charging speed, and can prevent abrupt change of charging properties in the middle of charging, and to provide a device for charging the battery. Ž<P>SOLUTION: The charging method of the secondary battery is such that a pulse-state voltage (particularly, a pulse-state voltage of a positive-potential voltage waveform) is periodically superimposed on a charging voltage of the constant-current charging, and applied to the secondary battery. The charging device of the secondary battery is such that a charging circuit having a circuit means of the constant-current charging includes a control means which controls the generation of the pulse-state voltage caused by the accumulation and the discharging of exciting energy to a coil of the charging circuit, by feeding a direct current to the coil; and the pulse-state voltage which is generated due to the feed control of the direct current by the control means is periodically superimposed on the charging voltage of the constant-current charging, and applied to the secondary battery. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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