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摩托车的供电系统一般采用磁电机和蓄电池混合供电。在正常行驶时,磁电机对蓄电池进行浮充电。 摩托车的大灯功率一般为30W左右,打开大灯时,磁电机发出的电能主要消耗在大灯上;不用大灯时,磁电机的负载很小,输出电压高达50～70V,因此接有放电电阻,使输出电压不致过高。放电电阻的阻值对蓄电池的工作状态影响很大,若阻值较大时,磁电机的输出电压较高,对蓄电池的充电电流较大,蓄电池的电压较高,转向灯、尾灯易烧毁,此时蓄电池处于过充电状态;若阻值较小,则会因输出电压过低,
Motorcycle power supply system commonly used magneto and battery hybrid power supply. In normal driving, the magneto floats the battery. Motorcycle headlamps power is generally about 30W, turn on the headlamps, the magnetomotive power is mainly consumed in the headlamps; without the headlamp, the magneto load is small, the output voltage up to 50 ~ 70V, so there are Discharge resistance, so that the output voltage will not be too high. The resistance of the discharge resistor has a great influence on the working status of the battery. If the resistance value is large, the output voltage of the magneto is higher, the charging current to the battery is larger, the voltage of the battery is higher, the turning light, At this point the battery is overcharged state; if the resistance is small, it will be due to the output voltage is too low,