A new energy management technique with aid of Controller Area Network (CAN) bus for hybrid electric vehicle (HEV) is proposed in this research. HEV is a type of hybrid vehicle that combines with an electric propulsion system a conventional internal combustion engine system. The electric powertrain operation is intended to achieve greater fuel economy than a conventional vehicle. To accurately distribute power from one of the battery sources, the Energy Management System determines the reference speed for the electric motor drive and the internal combustion engine. The Proportional and Integral (PI) controller is used to maximize the gain of the primary and secondary controllers for maximum overshoot and resolution time. By optimizing the value, using the Naked Mole Rat optimization technique, the efficiency is improved. The CAN bus is a multi-master communication protocol characterized by the deterministic resolution, high efficiency and simple implementation. We introduce a secure technology that helps to automotive CAN protocol which is often used in HEV networks. The simulation results show that the proposed approach achieves an increased efficiency of 97%.