| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power supply unit for vehicles, in which a lifetime of a fuse is detected and the fuse is replaced before being blown out so that a vehicle can travel safely, and in which the lifetime of the fuse can be determined by using a simple circuit structure, by utilizing a circuit previously equipped in the power supply unit for vehicles. <P>SOLUTION: The power supply unit for vehicles includes a battery 1 for running a vehicle, which consists of a rechargeable battery 5, and a fuse 8 connected in series with the running battery 1. The power supply unit for vehicles further includes a circuit 20 for determining the lifetime of the fuse 8 by detecting the electrical resistance of the fuse 8. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
