| 摘要 |
PROBLEM TO BE SOLVED: To cut off a charging current for a battery pack by detecting a temperature rise in the battery pack, secure a space of the battery pack, and reduce the cost of the battery pack. SOLUTION: A thermosensor 14 incorporated in an IC 12 for circuit protection monitors a temperature in a battery pack. When the monitored temperature is elevated and reaches a prescribed temperature, a voltage signal corresponding linearly to the temperature rise is transmitted to a charge/discharge control circuit 21. The voltage signal is amplified and detected by a battery temperature detection amplifier 22. When the temperature reaches the prescribed battery temperature, the charge/discharge control circuit 21 of a charger 20 cuts off a charging current supplied to the battery pack 10. COPYRIGHT: (C)2003,JPO
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