Charging machine the cause of damage and prevent motorcycle maintenance place charging machine damage reason, mainly in connection battery, he will pick up the polarity of battery inside out. Battery positive terminal should and charging machine positive interconnects connected, but and charging machine connected to the negative connecting line. Battery negative even terminal should and charging machine negative interconnects connected, but and charging machine connected to the positive electrode connecting line. According to the charging machine work principle, charging machine within the rectifier element for rectifier diode rectifier diode positive guide pass, reverse cutoff working principle, charging machine normal work, battery positive terminal is actually connected with rectifier diode. The rectifier diode is extremely high potential, negative extremely low potential, transformer output of the alternating current (ac) can through the rectifier diode into direct current to the battery. The polarity of battery pick back, battery positive terminal and charging machine negative interconnects connected, is actually and rectifier diode of the positive phase linked. Battery negative terminal and charging machine positive interconnects connected, is actually and rectifier diode connected to the negative the. The rectifier diode is extremely high potential, negative extremely low potential, battery will the rectifier diode for transformer discharge, electronic transformer internal resistance is small, so will form a larger discharge current, will rectifier diode and transformer burnout, make the charging machine can not continue to use the.
In order to prevent burn out charging machine, except in the use of charging unit properly connected battery outside, still should add the preventive measures, such as: in charging machine output line add over current insurance tube, insurance pipe fuse value should be greater than charging machine maximum output working current. Once appear battery polarity meet anti phenomenon, insurance pipe immediately will be battery discharge current burnout, terminated the battery discharge current, so as to protect the charging machine.
Still can use a special with special mark of the rectifier diode, first pick in battery, rectifier diode of negative joint battery positive terminal. Battery correct connection, do not affect the normal battery charging, once appear, battery polarity meet anti phenomenon, because of rectifier diode of negative extremely high potential, is extremely low potential, rectifier diode can’t conduction, prevents the for battery large discharge burn out charging machine, in order to protect the charging machine.