As an indispensable part of road transportation, heavy duty commercial vehicles are developing towards low-carbon and high-speed, and the brake system's load is also increasing. With the aims of improving the driving safety and the energy economy of new energy heavy commercial vehicles, a composite braking system combining mechanical friction braking, motor regenerative braking and auxiliary braking (eddy current retarder) was established. And a fuzzy logic control strategy was proposed to determine the proportion of each braking subsystem, taking into account the characteristics of subsystem and constraints such as vehicle speed and battery SOC. Simulations were carried out on slope road and flat road respectively, and the results demonstrate that the proposed control strategy can effectively improve the overall energy efficiency and braking safety of range-extended heavy commercial vehicles.

CICTP