| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery device which can present certainly information, such as a classification, a battery capacity of a built-in secondary battery and to provide a charger which can charge stably the secondary battery built in the secondary battery device based on information acquired from this secondary battery device. SOLUTION: The secondary battery device includes a memory for storing the information (the classification, the battery capacity and the like) concerning a secondary battery, and an antenna for electromagnetically coupling between an external apparatus and the device, and further includes a communicating means for outputting the information stored in the memory through the antenna. The charger includes a reader for supplying a power energy (electromagnetic coupling energy) to the secondary battery device through the antenna and receiving the information outputted from the secondary battery device through the antenna, and a charge control means for controlling charging of the secondary battery by a charging power source by analyzing the information received by this reader. COPYRIGHT: (C)2005,JPO&NCIPI |
