| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply device for a vehicle which can raise temperatures of a large capacity heater having a specification for cold districts etc. and a heater specific to cold districts, at high speed. <P>SOLUTION: This power supply device is provided with an in-vehicle battery 4 for supplying power to a heater Ha, a voltage detection means 14 for detecting an input/output voltage, and DC heating means 13 and 16 for heating the heater Ha by DC power until the temperature of the heater Ha detected by the temperature detection means 18 reaches a prescribed temperature when the heater Ha is turned on. The power supply device is provided with pulse energizing heating means 13 and 16 for heating the heater Ha by a periodic pulse current after the temperature detected by the temperature detection means 18 reaches the prescribed temperature, a means 13 for deciding whether or not a voltage value detected by the voltage detection means 14 is lower than a prescribed voltage value, and a means 13 for inhibiting operations of the DC heating means or the pulse energizing heating means 13 and 16 when the deciding means 13 decides that the voltage value is lower than the prescribed voltage value. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
