| 摘要 |
To detect terminal voltages in a battery package including high and low potential groups connected in series, a positive terminal of one battery module in the high potential group outputting the highest potential is connected through a resistor to a junction point connected to a negative terminal of another battery module in the low potential group outputting the lowest potential through another resistor having the same resistance. Other positive and negative terminals of pairs of module battery outputting successive lower voltage potentials in the high potential group and successive higher voltage potentials in the low potential group are connected to junction points through resistors, respectively. Voltages at junction points, differences in voltage potential between the successive two junction points, or differences in potential between the junction points and a middle potential at the junction between the high and low groups is measured. Battery module voltages or variation are calculated.
|
