| 摘要 |
A vehicle charger with memory function for electric vehicles contains an AC input circuit, a power factor correction circuit, a high voltage DC circuit, a DC-DC conversion circuit, an output control circuit, and a charging output terminal. The charging output terminal is connected to and charges a battery pack of the electric vehicle. A MCU chip, a battery pack voltage detection circuit, an operation data memory chip, a vehicle control signal connection port, a perpetual calendar chip, a data reading port, and an auxiliary power supply circuit are further included. The MCU chip detects a voltage of the battery pack through the battery pack voltage detection circuit, automatically records the charge and discharge data of the battery pack, and stores the data into the operation data memory chip. The recorded data include: times to complete a normal charge process, times and when the charge is not done in time after discharged, times and when the charge is powered off to be stopped before it is full-charged, and times and when the voltage of the battery pack meets a low voltage protection. The charger can provide real-time and reliable data and has a protection function for batteries with low voltage.
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