Patent ID: 11946976
Assignee: SK ON CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 0:
1. An apparatus for measuring an insulation resistance, the apparatus comprising:
a first distribution resistor coupled to a positive terminal of a battery and a ground;
a first switch coupled to the positive terminal of the battery and the first distribution resistor;
a second distribution resistor coupled to a negative terminal of the battery and the ground;
a second switch coupled to the negative terminal of the battery and the second distribution resistor; and
an insulation resistance measurement unit measuring a negative electrode insulation resistance and a positive electrode insulation resistance of the battery,
wherein a first voltage is applied to the first distribution resistor and a second voltage is applied to the second distribution resistor according to an operation of the first switch and the second switch, and
wherein the insulation resistance measurement unit measures only the first voltage among the first voltage and the second voltage and measures the negative electrode insulation resistance of the battery based on the first voltage, and
the insulation resistance measurement unit measures only the second voltage among the first voltage and the second voltage and measures the positive electrode insulation resistance of the battery based on the second voltage,
wherein when the resistance value of the positive electrode insulation resistor of the battery is measured, the insulation resistance measurement unit operates the first switch in a turn-off state and the second switch in a turn-on state, and
when the resistance value of the negative electrode insulation resistor of the battery is measured, the insulation resistance measurement unit operates the first switch in a turn-on state and the second switch in a turn-off state.