| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a charging and discharging control unit using power inputted and outputting considering the internal resistance of a unit battery for controlling the charging and discharging of an assembly battery. SOLUTION: When discharging, the total voltage and current of a battery 4 are sampled by a voltage sensor 7 and a current sensor 8. A battery controller 6 carries out a regression operation based on the sampled data for calculating power that can be inputted and outputted. When discharging, the voltage of each cell for composing the battery 4 is detected by a cell controller 5. In the battery controller 6, a regression operation on each cell is carried out based on the sampled cell voltage and current, and a cell having the maximum internal resistance is obtained. Then, the power that can be inputted and outputted is corrected based on the regression operation result of the cell having the maximum internal resistance.</p> |
