Apparatus for Detecting Coolant Leakage

An apparatus for detecting coolant leakage that can accurately detect the coolant leakage height in the process of detecting coolant leakage in the event of coolant leakage in a battery pack. The apparatus can detect leakage of a coolant flowing through a battery, and includes a detection resistor unit provided in the battery pack and including a resistor, the detection resistor unit configured such that the resistor is disposed at different heights from a lower end of the battery pack toward an upper end of the battery pack and the resistor comes into contact with the coolant, a power supply unit configured to supply power to the detection resistor unit, and a detection unit configured to connect to the detection resistor unit, and detect whether the coolant leaks and the coolant leakage height based on an electrical signal received from the detection resistor unit.