The invention discloses a high-
voltage battery charging
system architecture of an electric automobile. The high-
voltage battery charging
system architecture is arranged in a car body and is used for receiving
electric energy of
alternating current input
voltage so as to charge a high-voltage battery unit in the car body. The high-voltage battery charging
system architecture comprises a rectification circuit, a
power factor correcting circuit, and a non-isolated type DC-DC converting circuit, wherein the rectification circuit is connected with a common connection point and is used for rectifying the
alternating current input voltage to generate rectified voltage; the
power factor correcting circuit is connected with the rectification circuit and a
bus, and is used for improving power factors and generating
bus voltage; the non-isolated type DC-DC converting circuit is connected with the
power factor correcting circuit and the high-voltage battery unit, and is used for converting the
bus voltage into high-voltage charging voltage to charge the high-voltage battery unit; and an
electric energy transmission path of the non-isolated type DC-DC converting circuit does not comprise a
transformer. The high-voltage battery charging system architecture of the electric automobile can effectively reduce unnecessary consumption of a circuit to ensure that the charging time of the electric automobile or a
hybrid power automobile is comparably short, the manufacturing cost is lower and the efficiency is higher; besides, the high-voltage battery charging system architecture of the electric automobile has the advantages of lower charging loss, shorter charging time and the like.