Abstract: An apparatus for diagnosing an insulation condition between a battery pack and the ground includes a first resistor element electrically connected between a positive terminal of the battery pack and the ground, and a control circuit. The control circuit records a current flowing through the first test port as a first test current, while a high-level voltage is being applied between the positive terminal and the ground. The controller diagnoses the insulation condition between the battery pack and the ground, based on the first test current.

Abstract: An apparatus for preventing short circuit including an input/output terminal electrically connected, via a second external power line, to an external apparatus that is electrically connected to one of a driving voltage supply or a ground via a first external power line; an internal power line electrically connecting one of the driving voltage supply or the ground to the input/output terminal; a switch mounted on the internal power line to energize or block the internal power line; a variable resistor mounted on the internal power line; and a controller determining whether the input/output terminal is shorted based on a measurement current value of a current flowing through the internal power line and controlling a set resistance value of the variable resistor based on whether the input/output terminal is shorted.

Abstract: An apparatus for diagnosing an insulation condition between a battery pack and the ground includes a first resistor element electrically connected between a positive terminal of the battery pack and the ground, and a control circuit. The control circuit records a current flowing through the first test port as a first test current, while a high-level voltage is being applied between the positive terminal and the ground. The controller diagnoses the insulation condition between the battery pack and the ground, based on the first test current.

Abstract: An apparatus for preventing short circuit including an input/output terminal electrically connected, via a second external power line, to an external apparatus that is electrically connected to one of a driving voltage supply or a ground via a first external power line; an internal power line electrically connecting one of the driving voltage supply or the ground to the input/output terminal; a switch mounted on the internal power line to energize or block the internal power line; a variable resistor mounted on the internal power line; and a controller determining whether the input/output terminal is shorted based on a measurement current value of a current flowing through the internal power line and controlling a set resistance value of the variable resistor based on whether the input/output terminal is shorted.

Abstract: Disclosed are an apparatus and a method for calculating a precharge resistance of a battery pack. The apparatus for calculating a precharge resistance of a battery pack according to the present invention includes: a load resistor configured to be connected between a battery pack and a precharge resistor in series; a voltage measuring unit configured to measure a no-load voltage in a no-load state in which the load resistor is not installed in the battery pack or a load voltage applied to the load resistor when the load resistor has a predetermined current value in a load state in which the load resistor is installed in the battery pack; and a precharge resistance calculating unit configured to calculate the precharge resistor of the battery pack using the no-load voltage of the battery pack, the load voltage, and the predetermined current value.

Abstract: Disclosed are an apparatus and a method for calculating a precharge resistance of a battery pack. The apparatus for calculating a precharge resistance of a battery pack according to the present invention includes: a load resistor configured to be connected between a battery pack and a precharge resistor in series; a voltage measuring unit configured to measure a no-load voltage in a no-load state in which the load resistor is not installed in the battery pack or a load voltage applied to the load resistor when the load resistor has a predetermined current value in a load state in which the load resistor is installed in the battery pack; and a precharge resistance calculating unit configured to calculate the precharge resistor of the battery pack using the no-load voltage of the battery pack, the load voltage, and the predetermined current value.