| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an unmanned truck and its charging control method, which is capable of making annoying calculations for the judgment of a charging timing unnecessary and capable of operating a mounted battery efficiently by fixing the charging timing on the basis of the variation of the battery voltage as with respect to a power consumption. SOLUTION: Every time an unmanned truck repeats running, a controller 3 calculates the difference (V=V1-V2) of voltage values, to be sent out before and after the running by the aid of a voltage-measuring circuit 2 and calculates the rate of changed X (X=V/N) of a battery voltage with respect to a power consumption from a travel distance signal N, sent out by a travel distance measuring circuit 6, 7. The controller 3 judges a proper charging timing, by judging whether or not the value X has become less than a specified constant value X to be determined unequirocally only by the running performance of the unmanned truck and the battery rating.</p> |
