| 摘要 |
PURPOSE: A charging device for an auxiliary vehicle battery is provided to implement a safe operation in case of noise generation by electrically separating a black box and a navigation device from a vehicle. CONSTITUTION: A charging device for an auxiliary vehicle battery supplying power to a navigation device and a black box prepared in a vehicle comprises a main battery (10) and a charger (100) for receiving power from the main battery and charging an auxiliary battery (20). If the voltage of the main battery drops below a preset voltage, the charger stops charging the auxiliary battery to protect the main battery from overdischarge. [Reference numerals] (10) Main battery (battery for vehicle); (110) Input connector; (120) Output connector; (20) Auxiliary battery; (30) Electric appliance; (AA) Navigation; (BB) Black box, etc. |
