| 摘要 |
<p>PURPOSE:To protect a battery, by prohibiting the simultaneous operation of driving and loading/unloading main circuits when the battery is overdischarged. CONSTITUTION:When a battery is discharged over 100% of its capacity during loading/unloading work of vehicle, CPU27 switches ON/OFF control of a loading/unloading transistor 11 to overdischarge mode through a transistor drive circuit 46 based on a signal fed from a battery voltage detector 37. Consequently, current to be fed from the battery to a loading/unloading motor is limited. If driving and loading/unloading levers are operated simultaneously, CPU27 issues an operation command only to one contactor driving circuit 40 so as to energize a driving main circuit with priority. Consequently, a driving motor is rotary driven to enable movement of the vehicle to an external charging device.</p> |
