| 摘要 |
A system for determining isolation resistances of a battery pack includes a voltage source, a voltage meter, and a microprocessor. The voltage source is disposed external of the battery pack. The voltage source applies an output voltage on first and second electrical terminals. The voltage meter measures a first voltage level between the first electrical terminal and the housing, and a second voltage level between the first electrical terminal and the housing when a resistor is electrically coupled between the first electrical terminal and the housing. The voltage meter measures a third voltage level between the second electrical terminal and the housing, and a fourth voltage level between the second electrical terminal and the housing when the resistor is electrically coupled between the second electrical terminal and the housing. The microprocessor determines a first isolation resistance value based on the first, second, and third voltage levels. |
