| 摘要 |
PROBLEM TO BE SOLVED: To provide a secondary battery control device having calculation means that can identify the parameter of an equivalent circuit by reflecting an effect of deterioration of a secondary battery, and can be implemented in an on-vehicle microcomputer.SOLUTION: A secondary battery control device 10 has a calculation unit 12 for identifying the parameter of an equivalent circuit on the basis of an estimation error as a comparison result between an actual output value of an actual output of a secondary battery 32 and an equivalent output value as an output of the equivalent circuit. The calculation unit 12 numerically determines the gradient of an evaluation function based on minute variation of a predetermined parameter and the evaluation function obtained by using the comparative result, and updates the parameter based on the gradient.SELECTED DRAWING: Figure 1 |
