In today's world, vehicle power systems have shown a development trend of driving electrification and energy diversification. Accelerating the development of clean energy vehicles mainly composed of hybrid vehicles and pure electric vehicles is the general trend of automobile development in the world. Based on the national energy strategy, new energy vehicle development trends and market demand, Shanghai Automotive Group Co., Ltd. focused on judging the development situation of new energy vehicles during the "Eleventh Five-Year Plan" period after integrating various aspects and the results of the preliminary stage work., clarified the development path of new energy vehicle technology-while promoting the R & D, upgrading and demonstration operation of fuel cell vehicles, it will accelerate the industrialization of hybrid and electric vehicles.
SAIC's first self-owned brand hybrid sedan is a hybrid sedan developed by using high-voltage hybrid motors on the Roewe new 750D/1.8T/5AT platform. The technical solution of the Roewe New 750 Hybrid Car is to integrate the hybrid motor into the front gear train of the engine, and the lithium battery system, inverter, DC converter and vehicle controller are integrated into a "Power Box" arranged on the front side of the luggage compartment. This technical solution can realize all hybrid functions except pure electric drive, achieving a comprehensive fuel saving rate of about 20%.
The Roewe 750 Hybrid has the following hybrid characteristics:
① The engine starts and stops automatically;
② Hybrid motor power;
③ Brake energy recovery;
④ Intelligent driving charging;
③ Limited electrical crawling ability;
④ Slow down and cut off oil;
③ The torque converter is blocked in advance;
Hybrid motor assists in starting.
The development of SAIC's first self-owned brand hybrid sedan focuses on technological innovation in core technologies and key systems to form the core competitiveness of the product. Through independent innovation, we have mastered hybrid core technologies such as multi-energy management systems, hybrid power system integration, and electromechanical composite energy feedback braking control, forming the core competitiveness of automotive electronic control systems. At present, many patents have been applied for in vehicle, automotive multi-energy management systems and automotive electronic control systems. At the same time, technical standards for electronic control and lightweight of hybrid cars and automobiles are also under study and formulation.
Through the implementation of this project, many technical problems have been solved, laid a foundation for industrialization for mass production of hybrid cars, and will drive the development of the hybrid vehicle industry chain. Developing hybrid vehicle products and realizing mass production and marketization will also drive the formation of key parts and components industry chains. Build and improve the key parts and components industry chain, provide supporting services for the industrialization of new energy vehicles, and promote the formation of the new energy vehicle parts and components industry.