NOVELTY - The apparatus (100) has a voltage measurement part (120) for measuring voltage value of a battery rack that is provided with multiple battery modules. A comparison unit (130) compares great and small predetermined voltage limit values with measured voltage value through the voltage measurement part. A relay control part (150) controls operation of a main relay (143) and a pre-charge relay (141) according to comparison result. The pre-charge relay is serially connected to a pre-charge resistor (142) according to capacity of the battery rack.    USE - Voltage measurement based battery rack damage prevention apparatus for a voltage measurement based battery rack breakage prevention system (claimed) of a mobile apparatus, an energy storage system (ESS)/uninterruptible power supply (UPS) system and a vehicle such as electric vehicle (EV) and hybrid vehicle (HV) and car (from drawings).    ADVANTAGE - The relay control part effectively controls operation of the main relay and the pre-charge relay according to comparison result so as to prevent current from being abnormally flowed to the battery rack and short phenomenon from being generated, thus preventing the battery rack from being damaged due to overcharge, overheat and fire. The apparatus accurately measures voltage value of the battery rack and compares predetermined voltage limit values with measured voltage value so as to prevent charging capacity of the battery rack from being unbalanced.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a voltage measurement based battery rack breakage prevention system    (2) a Voltage measurement based battery rack damage prevention method.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic block diagram of a voltage measurement based battery rack damage prevention apparatus. '(Drawing includes non-English language text)'    Voltage measurement based battery rack damage prevention apparatus (100)    Voltage measurement part (120)    Comparison unit (130)    Pre-charge relay (141)    Pre-charge resistor (142)    Main relay (143)    Relay control part (150)