| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack control circuit capable of reducing the size and cost. SOLUTION: The battery pack control circuit has an integrated circuit 15 incorporating an FET 16, a unit cell voltage detecting section 7, and a bypath control section 8. In the FET 16, a P channel FET and an N channel FET are employed alternately for every unit cell 1, source side of the FET 16 is connected with the terminal of the unit cell 1 while sharing the voltage detection pin XX of the integrated circuit 15, drain side of the FET 16 is connected with the terminal of the unit cell 1 from the bypath current conduction pin YY of the integrated circuit 15 through a bypath current conduction resistor 2, and connected with other voltage detection pin XX of the integrated circuit 15 through a filter resistor 3 from the joint of the bypath current conduction resistor 2 and the unit cell 1. Reliability is enhanced while reducing the size by decreasing the number of components, and the cost is reduced without sacrifice of noise resistance by decreasing the number of pins of the integrated circuit 15. COPYRIGHT: (C)2006,JPO&NCIPI
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