AUXILIARY POWER SUPPLY DEVICE FOR VEHICLE, POWER SUPPLY DEVICE FOR VEHICLE, HAVING THE AUXILIARY POWER SUPPLY DEVICE, AND AUTOMOBILE

摘要

An auxiliary power supply device for vehicle includes a capacitor unit, a temperature detector, and a charge controller. The capacitor unit includes at least one electric double layer capacitor. The temperature detector detects temperature in vicinity of the capacitor unit. The charge controller controls charging voltage of the capacitor unit based on a detection result of the temperature detector.