| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a protection circuit that protects a load circuit regardless of the output voltage of a secondary battery when abnormal conditions occur in consumption power of the load circuit, and to provide a battery pack with the same. <P>SOLUTION: The circuit includes connection terminals 11 and 12, a terminal voltage detection part 217 that detects the voltage between the connection terminals 11 and 12, a current detection part 219 that detects the discharge current of an assembled battery 14, and an outside protection part 212 for performing an outside protection process to protect an outside circuit 3 and a consumption power calculation part 211 for calculating the consumption power of the outside circuit 3 when the consumption power P calculated by the consumption power calculation part 211 exceed the maximum consumption power Pmax of the outside circuit 3 by multiplying the terminal voltage Vt detected by the terminal voltage detection part 217 by the charge and discharge current value Ic detected by the current detection part 219 during discharging. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
