| 摘要 |
A battery pack and a charging device authenticate mutually, and charging operation is controlled according to the mutually authenticated result. After charging starts, at step S21, current and voltage are measured. At step S22, it is determined whether the voltage is 3 V or higher, and the charging current is 50 mA or larger. When the determined result at step S22 is Yes, it is determined whether the charging device has been successfully authenticated at step S23. When the charging device has been successfully authenticated, the charging shutoff operation is not performed. When the charging device has not been successfully authenticated, it is determined whether the charging state has continued for 60 seconds at step S24. When the determined result represents that 60 seconds has elapsed, the charging shutoff operation is executed and the charging current is shut off at step S25. When the battery pack for which the charging shutoff operation has been performed is detached from the char ging device, the charging shutoff state is cancelled. [ Drawing] Fig.4. |
