ISOLATION RESISTANCE MEASUREMENT APPARATUS THAT CAN RAPIDLY MEASURE ISOLATION RESISTANCE

摘要

Disclosed are an apparatus and a method for measuring an isolation resistance, the apparatus and method enabling calculation of the isolation resistance quickly and accurately regardless of parasitic capacitance components existing in a battery pack. The isolation resistance measurement apparatus according to one aspect of the present invention includes: a positive test resistor connected to a positive pole of a battery assembly; a negative test resistor connected to a negative pole of the battery assembly; a switch unit forming a circuit by respectively connecting the positive and the negative test resistors to the positive and the negative poles of the battery assembly; a switch control unit controlling the switch unit; a voltage measurement unit measuring a first voltage applied to the positive test resistor and a second voltage applied to the negative test resistor; and a voltage estimation unit reading at least one voltage between the first and the second voltages, which are measured by the voltage measurement unit, for at least two cycles according to predetermined cycles after forming the circuit by controlling the switch control unit, and estimating the final convergent value of at least one voltage between the first and second voltages by using the read voltage.