The invention discloses a semitrailer
battery energy transmission system and method based on an
electric traction vehicle, belongs to the technical field of
battery energy transmission, and aims to solve the problems that in the prior art,
energy supply for a semitrailer is inconvenient, the actual transportation effect of the semitrailer is affected, and the
transportation cost is increased. The
system comprises an electric
tractor and a semitrailer, the electric
tractor is provided with an
optical coupler, the electric
tractor is provided with a traction seat and a first battery, the
optical coupler is electrically connected with a control device, an ECU
control unit and a vehicle end interface, the ECU
control unit is electrically connected with a display, and the control device is provided with a plurality of control assemblies; the second battery is charged through the first battery, so that
energy supply for the semitrailer is facilitated, the problem of insufficient energy of the semitrailer can be effectively solved, the transportation problem caused by insufficient energy of the semitrailer in the driving process is avoided, the logistics transportation efficiency is improved, and the logistics cost is reduced.