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Automobile hybrid electric system based on FlexRay buses

A hybrid power system and bus driver technology, applied in the automotive field, can solve the limitations of the hybrid power system for vehicles and other problems, and achieve the effect of sensitive control

Inactive Publication Date: 2012-01-25
BEIJING JIAOTONG UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The invention provides a vehicle hybrid power system based on the FlexRay bus to solve the limitation problem of the vehicle hybrid power system based on the CAN bus

Method used

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  • Automobile hybrid electric system based on FlexRay buses
  • Automobile hybrid electric system based on FlexRay buses

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Embodiment Construction

[0035] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036] It is suitable for CAN bus to be applied in the existing power system of the automobile. But during event-triggered communication, network traffic congestion occurs when several messages are sent at the same time. At this time, the CAN protocol's non-destructive arbitration mechanism based on bit competition can ensure that the information is sent in the order of priority, but it will cause a large delay in the transmission of some information, and it is difficult to estimate the delay of a message at design time. time characteristics. In real-time application systems, such as wire control systems, the communication scheduling of the entire network must ensure that information can be transmitted within a known time under a...

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Abstract

The invention provides an automobile hybrid electric system based on FlexRay buses, aiming to solve the problem of limitations of an automobile hybrid electric system based on a controller area network (CAN) bus. The system comprises a FlexRay bus A and a FlexRay bus B, wherein the FlexRay bus A is respectively connected with an engine controller module, a transmission case controller module, a braking controller module, an entire automobile control module and a diagnosis interface module through the FlexRay network nodes of the modules; and the FlexRay bus B is respectively connected with an automatic clutch controller module, a motor controller module, a battery management system module, the entire automobile control module and the diagnosis interface module through the FlexRay network nodes of the modules. Since the FlexRay buses are used for the connection of the system provided by the invention, the bandwidths of the FlexRay buses are large, the transmission speed is fast, the system can be used as a dual-channel system to operate, the hardware cost can be saved during design, and the system is more suitable for vehicles.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a vehicle hybrid power system based on the FlexRay bus. Background technique [0002] HEV (Hybrid Electric Vehicle) is an effective combination of traditional internal combustion engine system and electric drive system. Compared with fuel vehicles, under the same mileage conditions, HEV has better fuel economy and emission performance; compared with pure electric vehicles, the transformation cost and driving range are better. HEV combines the engine, electric motor, and energy storage device (battery). The good matching and optimal control between them can give full play to the advantages of internal combustion engine vehicles and electric vehicles and avoid their respective shortcomings. It is the most practical development significance today. Low emission and low fuel consumption cars. [0003] According to the combination of the engine and the motor, the hybrid system can be divid...

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Application Information

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IPC IPC(8): B60W20/00B60W10/06B60W10/10B60W10/08B60W10/02B60W10/26B60W10/18B60W40/10
CPCY02T10/6286Y02T10/62
Inventor 刘彪李润鑫庄江丽
Owner BEIJING JIAOTONG UNIV
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