Electric power supply control apparatus for a motor assist vehicle

摘要

An electric power supply control apparatus (41 - 45) for controlling electric power supplied to an electric motor (2) and a lamp (3) in a motor assisted vehicle comprises: an input torque detecting means (10) for detecting a torque generated by strength of the driver; the lamp (3); the electric motor (2) capable of generating assist power in accordance with a value detected by the input torque detecting means (10); and a battery (1) for supplying electric power to the lamp (3) and the electric motor (2). In the control apparatus (41 - 45) electric power supplied by the battery (1) to the electric motor (2) and the lamp (3) is controlled so that is it possible to prevent electric power from being discharged excessively from the battery (1) to the electric motor (2) and the lamp (3) of the motor assisted vehicle, which is currently powered only by strength of the driver, can be turned on even in the absence of assistance provided by the electric motor (2). To this end, the electric power is controlled as follows: when the voltage of the battery (1) drops below a first predetermined level, supplying of electric power to the electric motor (2) is halted, and when the voltage of the battery (1) drops below a second predetermined level which is lower than the first predetermined level, supplying of electric power to the lamp (3) is halted.