Controller area network (CAN) system network management method for new energy vehicle

Abstract

The invention provides a controller area network (CAN) system network management method for a new energy vehicle, belonging to the technical field of vehicle network management. The CAN system network management method for the new energy vehicle solves the problem that the vehicle-mounted network management strategies in the prior art gradually cannot meet the demands of network management. The CAN system network management method for the new energy vehicle mainly comprises the following steps of: 1) functionally dividing the controllers of the CAN network of the whole vehicle to determine network management modes; 2) setting and allocating corresponding identification (ID) addresses to the controllers, and setting 0x6xx to represent network management messages; and 3) respectively and logically setting a main controller, intermediate controllers and slave controllers obtained by dividing the vehicle-mounted controllers. The CAN system network management method for the new energy vehicle has the advantages that the performance of the traditional bus can be optimized, the vehicle-mounted network of the new energy vehicle is enabled to be more flexible, the configurations are richer and the goal of rapidly extending the vehicle-mounted network of the new energy vehicle is realized.

Description

technical field [0001] The invention belongs to the technical field of automobile network management, and relates to a network management method of a CAN system of a new energy automobile. Background technique [0002] In today's increasingly tense traditional energy sources, hybrid electric vehicles have become a development trend. Their safety and intelligence are not only closely related to the safety of vehicle occupants, but also indirectly verify the design quality of hybrid electric vehicles. With the rapid development of automotive electronics and the application of new energy technologies in vehicles, the use of ECU control units in vehicles is increasing, and the increase in ECUs will inevitably bring about problems such as the increase in wiring harnesses and the reliability of UCU function realization. In-vehicle networks are also becoming increasingly complex. In the 1980s, a German company designed a single network bus, so that all peripheral electrical device...

AI Technical Summary

Problems solved by technology

However, once a controller loses communication or joins the communication network, other controllers have to make adjustments at the same time, and because there are more and more controllers working, the content that needs to be processed in network management becomes more and more complicated. For the CAN bus network, it will cause a sudden increase in the bus load rate, which will seriously affect the communication quality and poor communication flexibility. There are certain risks in using direct network management for all controllers. The traditional vehicle-mounted network management strategy is gradually unable to meet the network requirements. management needs

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