Research on Problems and Countermeasures of Braking Energy Recovery Technology for Hub-Motor Electric Vehicles

Hub motor electric vehicles have advantages such as high transmission efficiency, fast power response, and streamlined chassis layout. However, due to the large unsprung mass of the hub motor, energy consumption increases during frequent acceleration and deceleration. Conducting research on braking energy recovery technology is of great value for reducing the overall vehicle energy consumption and improving energy recovery efficiency. This paper takes the regenerative braking energy recovery technology of hub motor electric vehicles as the research object. Firstly, by combining the relevant theories of hub motors and energy recovery, it summarizes the current research status of energy recovery technology for hub motor electric vehicles. Then, it analyzes the problems and influencing factors of braking energy recovery technology for hub motor electric vehicles from aspects such as recovery efficiency, coupling complexity, and coordinated control. Finally, it proposes improvement strategies for the application of braking energy recovery technology in hub motor electric vehicles from aspects such as control logic, condition identification, and system linkage. This research can effectively enhance the energy recovery performance of regenerative braking in hub motor electric vehicles and provide a reference for improving the energy utilization efficiency of hub motor electric vehicles.