| 摘要 |
PROBLEM TO BE SOLVED: To provide a battery pack monitoring controller capable of controlling operation of an equalization circuit, highly precisely monitoring whether or not equalization is made, detecting over-charging and over-discharging, and attaining cost reduction with a minimum circuit scale. SOLUTION: The battery pack monitoring controller 1 includes: a voltage monitoring circuit 2 for monitoring respective cell voltages VC1, VC2 of a plurality of cells C1, C2 connected in series with each other to form a battery pack; an equalization circuit 3 for regulating the cell voltages VC1, VC2 for equalization; and a monitoring control part 4 for receiving a monitoring result from the voltage monitoring circuit 2 and controlling operation of the equalization circuit 3. The monitoring control part 4 selects the cells for regulating the cell voltages VC1, VC2 to operate the equalization circuit 3, based on a monitoring result received from the voltage monitoring circuit 2, then receives the monitoring result again from the voltage monitoring circuit 2 and determines it to be proper if an equalization condition for accommodating a voltage difference between a maximum and a minimum of the respective cell voltages within a fixed value is satisfied. COPYRIGHT: (C)2010,JPO&INPIT |
