1. Foreign development
The development of the vehicle controller includes software and hardware design. The core software is generally developed by the OEM, and the hardware and the underlying driver software can be selected by the auto parts manufacturer.
Foreign vehicle controller technology tends to mature Most foreign auto companies have accumulated sufficient in the field of electric vehicles, the control strategy has high maturity, and the vehicle has good fuel economy. The controller products have proved their reliability through market inspection.
Automotive electronic components companies are actively developing and manufacturing complete vehicle controllers.
Various automotive electronic components giants, such as Delphi, China, and Bosch Group, have developed and produced vehicle controllers. Some car design companies also provide complete vehicle controller technology solutions for automakers, such as AVL, FEV, RICARDO, etc. There are also many successful cases in the field of electric vehicle controllers.
The standardization of controllers with standardized controllers has attracted the attention of relevant companies. The global automotive manufacturer, component suppliers and electronics, semiconductor and software systems companies jointly established the automotive open system architecture alliance, forming the AUTOSAR standard, simplifying the development process and making the ECU software reusable, which is developed by the controller. A trend.
2. China's development status
In the "863" plan, China's vehicle controllers are mainly based on universities, such as Tsinghua University, Tongji University, Beijing Institute of Technology, etc., and have initially mastered the software and hardware development capabilities of vehicle controllers. The product features are relatively complete, basically meet the needs of electric vehicles, and have been applied to sample cars and small batch products. Some vehicle companies cooperate with foreign companies, such as FEV and RICARDO. Through joint development, they absorb relevant foreign technologies and experiences and enhance their independent development capabilities. At present, all manufacturers basically master the development technology of vehicle controllers, but the technology accumulation is limited and the levels are uneven.
China's controller hardware level has a certain gap with foreign countries, and the industrialization capacity is relatively insufficient. Most companies are more inclined to choose foreign vehicle controller hardware suppliers when they introduce mass-produced electric vehicle products. In addition, the controller's basic hardware, development tools, etc. basically rely on imports.
Generally speaking, there is still a big gap between the technical level and industrialization capability of controller products and foreign countries.
3. The main problems of the whole vehicle controller in China
Most of the application software stays in the function implementation, and the software diagnostic function, the vehicle safety control strategy, and the monitoring function are all to be optimized and improved.
China's electric vehicles are in the stage of R&D and demonstration operation of prototype vehicles, and the basic database is imperfect, which affects the design level of vehicle controllers.
Some enterprises can introduce relevant equipment and software according to the V-type development process, and generally use general development tools for secondary development; existing tools are biased towards pre-development, lacking tools for manufacturing and after-sales service, which is not conducive to industrialization of products. development of.
Domestic enterprises can complete the hardware structure design of the vehicle controller. However, due to the weak integration of China's chip, the manufacturing capability is poor, and there is still much room for improvement in reliability and stability.
At present, the definitions of controller interfaces and network communication protocols of various vehicle enterprises are different from each other, resulting in poor versatility and reusability between controllers, which is not conducive to the industrialization and scale of controllers.