| 摘要 |
PURPOSE: An apparatus for measuring a high voltage of a fuel cell stack using an isolated capacitor is provided to simplify a structure of a circuit by using a voltage-dividing resistance, a switching element, and a capacitor without using a conventional insulated IC. CONSTITUTION: An apparatus for measuring a high voltage of a fuel cell stack includes voltage-dividing resistances(R1,R2), a first switch(SW1), a second switch(SW2), and a capacitor(C1). The voltage-dividing resistances are installed between both ends a plurality of cells(Cell) of a battery unit body(10). The first switch and the second switch are connected to a power source route among the voltage-dividing resistances and a CPU(30). The capacitor is connected to both ends of the cells between the first switch and the second switch. The first switch and the second are turned on/off switch are turned on/off in opposite to each other according to a control signal of the CPU. The first switch and the second switch are composed of relays. |
