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Hybrid power CAN network communication system

A network communication and hybrid power technology, applied in the field of CAN network communication system, can solve the problems of poor scalability and single network structure, and achieve the effect of real-time communication, large amount of information, and reduced difficulty of diagnosis

Active Publication Date: 2012-05-02
CHONGQING CHANGAN AUTOMOBILE CO LTD +1
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Problems solved by technology

[0003] The patent publications with application numbers 200810195129.7 and 200810234008.9 describe the application of the CAN bus in the automotive field, involving vehicle network topology, ID allocation, etc., but the above patents have defects such as single network structure and poor scalability

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Embodiment Construction

[0013] The following describes the CAN network communication system of the hybrid electric vehicle of the present invention with reference to the drawings and specific examples, such as figure 1 Shown is the topological structure diagram of the CAN network communication system. The topological structure of the CAN network communication system is composed of three high-speed CAN subnets, including: traditional power subnet, hybrid subnet, and calibration and diagnosis subnet. The traditional power subnet consists of the anti-lock braking system ABS, electronic injection ECU nodes, body central controller BCM nodes, and vehicle controller HCU. The matching resistors are set in the BCM and ECU to make the subnet baud rate 500 kbps, the sampling point is 75%; the hybrid subnet consists of the main controller HCU, battery controller BCU, motor controller IPU, and display unit DCU. The HCU and BCU are connected through the CAN transceiver module. The terminal is equipped with matching...

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Abstract

The invention discloses a hybrid power CAN network communication system, and relates to the technical field of automobile electronics. Aiming at the defects that the automobile network structure has low expandability and the like in the prior art, the network communication system consisting three CAN communication subnets, namely a traditional power subnet, a hybrid subnet and a calibration diagnosis subnet is designed, wherein the three subnets perform information interaction among different net segments through a hybrid control unit (HCU) gateway, the traditional power subnet realizes signal communication among controllers of a traditional power system, the hybrid subnet realizes communication among controllers of an electric driving system, and the calibration diagnosis subnet realizescalibration diagnosis of controllers of a hybrid electric vehicle. The hybrid power CAN network communication system has the advantages of more CAN network nodes, more information and capability of meeting function and performance requirements of the hybrid power system.

Description

Technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a CAN network communication system. Background technique [0002] As the application of microcontrollers in the field of automotive control becomes more and more widespread, the degree of automotive electronics is getting higher and higher. In order to reduce costs and simplify the wiring harness connection, various automobile manufacturers have adopted various bus control technologies to achieve the purpose of complex real-time data exchange between the numerous electronic control units of the automobile. The CAN bus is one of the most important bus protocols. It has the characteristics of high transmission rate, low cost, and reliable error handling and error detection mechanism, so it is naturally widely used in the automotive industry. [0003] The patent publications with application numbers 200810195129.7 and 200810234008.9 describe the application of CAN bus in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/02H04L12/40
Inventor 李宗华苏岭严钦山关静
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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