New energy vehicle high-voltage fast charging system

The utility model relates to a high-voltage fast charging system for a new energy vehicle, and belongs to the technical field of vehicle charging. The system comprises a high-voltage control unit, a power battery module, a charging and discharging control relay, a first cable, a second cable, a first branch type high-voltage cable, a second branch type high-voltage cable, a third branch type high-voltage cable and a fourth branch type high-voltage cable. The switching of high-voltage charging and discharging of the new energy vehicle is realized through the series-parallel connection of a charging positive interface, a charging negative interface, a discharging main loop positive interface and a discharging main loop negative interface of the high-voltage control unit, and the charging and discharging efficiency is relatively high; the technical problem that the energy density of the battery is greatly reduced due to the adoption of a high-capacity and high-charging-rate battery is solved, in addition, large-