Internal network architecture of hybrid electrical vehicle

Abstract

The invention discloses an internal network architecture of a hybrid electrical vehicle. The internal network architecture comprises conventional power system nodes and electric drive system nodes. The conventional power system nodes are arranged on a high-speed CAN (controller area network) bus to form a conventional power system sub-network. The electric drive system nodes are arranged on another high-speed CAN bus to form an electric drive system sub-network. A gateway connected with the conventional power system sub-network and the electric drive system sub-network is a vehicle control unit of the hybrid electrical vehicle. By the internal network architecture, the two high-speed CAN buses with different functions are integrated in the same network by adopting a gateway technology, so that the internal network architecture is distinguished from a conventional single-channel network communication system. The dual-channel network reduces the load of a single-channel network and improves the real-time performance of each sub-network. Simultaneously, the security of the network is improved, namely control based on the sub-networks has the advantage that the other sub-network may not be influenced when one sub-network fails, information exchange is performed by the gateway to share information, and the characteristics of high efficiency and low cost of the CAN bus are fully utilized.

Description

technical field [0001] The invention relates to the field of automobile automation, in particular to the system structure of an internal local area network system for communication between numerous automobile electronic control devices in a hybrid electric vehicle. Background technique [0002] With the continuous development of automotive electronic technology and the continuous improvement of automotive performance requirements, there are more and more electronic devices on the car. If the traditional centralized wiring is used, the wiring harness is long and the number of electrical nodes is large, which is no longer suitable for today's development trend. However, the use of fieldbus technology to build a distributed vehicle network can significantly simplify wiring, reduce wiring harness costs and vehicle weight, and improve Communication reliability provides the possibility for lightweight and intelligent vehicles. The world's major automotive OEMs have started resear...

AI Technical Summary

Problems solved by technology

Because there are a lot of data transmitted and shared in real time between electronic control units, and the integration of so many ECUs and their accompanying communication equipment will inevitably make the vehicle circuit extremely cumbersome and complicated, with many wiring harnesses, heavy weight, high cost and low reliability

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