Future Vehicle Electrical System Architecture Development
The future direction of the car is intelligent, networked, and informatized, so our architecture needs to have advanced technology that can be supported, stable and reliable, flexible expansion, low-cost product development, and provide more abundant product services. A model that can meet multiple configurations is expected. In the "China Automotive Electronics and Electrical Architecture Technology Innovation Forum 2018", Mr. Li Honglei, Director of Electrical Integration and Electrical System Architecture and Integration from Brilliance Automotive Engineering Research Institute, explained the following five network architectures.
The first single network architecture: single network architecture has the advantages of simple network and easy development. The disadvantage is that it does not support too many complex functions and is suitable for economical cars. The second multi-network architecture: multi-network architecture can support more complex functions. However, the network is complex and difficult to expand and upgrade; the third centralized network architecture: centralized network architecture is easy to platform development, but the single piece is complex, reliability and stability are not easy to guarantee; the fourth distributed network architecture: distributed network The architecture is easy to platform, stable and reliable, but the cost is high, not suitable for low-profile models; the fifth centralized + distributed network architecture: centralized + distributed network architecture is easy to platform, stable and reliable, technical advantages, but high cost It is not suitable for low-profile models and is the main development direction of future luxury models. Then Li showed the topological map of the 5 network architectures. Finally, Li said: The architecture is not good or bad. Only the complexity is high. Different architectures are suitable for different types and different grades. The demand determines the architectural form, and the technology determines the intelligence. degree.
As these architectures become more complex and more complex, it brings a lot of trouble to the development of verification tests. How to verify the tests to ensure that it is effective, how to ensure the reliability of the architecture development is a major challenge. How can we ensure the realization of architecture development, then Li introduced us to the following four integration test methods: the first Labcar test: Labcar is function-centric, integrating all the controllers and real loads of the vehicle for testing. Virtual vehicle gantry. Labcar has been applied from the early stage of the project to the SOP. Throughout the project plan, it is an important vehicle test bench. The second subsystem test: Subsystem test can be divided into different functional subsystems according to different functions, such as power chassis. system. Body electronics, multimedia systems, etc. The subsystem gantry is also functionally centered, and the ECU is loaded with the load in the form of subsystems for testing. Finally, the whole vehicle is tested with the vehicle Labcar; the third hardware is in the loop test: HIL is The virtual vehicle system with functions as the center and virtual ECU operating conditions for automated testing. It is divided into four parts: channel matching, signal conditioning, model building and test monitoring. Fourth real vehicle test: based on the latest state of the vehicle, regularly update the vehicle ECU, and perform dynamic function test on the actual vehicle from the customer's point of view. . It mainly includes forward function test and free function test. And showed us the test methods and cases of Brilliance.
For the development of the architecture, Mr. Li told us that complex and advanced technologies require advanced means to verify; complex and complex functions require clear verification test procedures; complex and difficult problems require teams with advanced technology, advanced means, and advanced management processes. To solve the problem; in the integration test, we must start testing as early as possible, try to test as many times as possible, find the problem as soon as possible, try to find the problem as much as possible, and solve the problem as soon as possible.
“China Automotive Electronic and Electrical Architecture Technology Innovation Development Forum 2018” Organizer: GRCC is a technology development, technology transfer, technology consulting exhibition service, conference service and other business development in the field of automotive technology. Technical consulting company. The company provides industry information, business innovation development solutions, market research, business cooperation and network development platforms, personal career development, investment and financing consulting services to senior decision-makers at leading domestic and foreign companies (mainly Fortune 500 companies).