Communication circuit for electric vehicle based on CAN bus
A CAN bus, electric vehicle technology, applied in the direction of circuits or fluid pipelines, vehicle components, transportation and packaging, etc., can solve the problems of single CAN communication network topology, poor scalability, no protection for communication circuits, etc., to achieve Fast and convenient communication, filter out data interference signals, and improve performance
Active Publication Date: 2016-04-27
GAC AION NEW ENERGY AUTOMOBILE CO LTD
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Problems solved by technology
[0004] The present invention aims to solve the technical problems in the prior art that the topology of the CAN communication network is too single, the scalability is not strong, and the communication circuit has no protection. It provides a communication circuit for electric vehicles based on the CAN bus, which is suitable for high-strength, Highly complex communication requirements
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[0028] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0029] Such as figure 1 As shown, the present invention provides a communication circuit for electric vehicles based on the CAN bus. The electric vehicles described in this application refer to vehicles with electric modes, including pure electric vehicles and hybrid vehicles with electric modes. The hybrid vehicles mentioned above all refer to hybrid vehicles with an electric mode. The electric vehicle involved in the present invention includes the main control unit 10 of the vehicle controller and the auxiliary control unit 40 on the electric vehicle. The auxiliary co...
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The invention provides a communication circuit for an electric vehicle based on a CAN bus. The communication circuit comprises a CAN receiving and sending device and a signal control circuit electrically connected with the CAN receiving and sending device. The CAN receiving and sending device is used for transmitting communication data between a master control unit and an auxiliary control unit of a vehicle control unit of the electric vehicle. The signal control unit is used for carrying out rectifier filtering on the communication data and filtering interference signals in the communication data out. The CAN receiving and sending device at least comprises a first CAN receiving and sending device without a wakeup function and a second CAN receiving and sending device with a wakeup function, and the first CAN receiving and sending device and the second CAN receiving and sending device are respectively connected with the signal control circuit. According to the technical scheme, strong expandability is achieved, and the communication requirements for high strength and high complexity of the electric vehicle can be met.
Description
technical field [0001] The invention belongs to the field of electrical equipment control of electric vehicles, and in particular relates to an equipment protection device for electric vehicles and a working method thereof. Background technique [0002] At present, various microcontrollers are more and more widely used in the field of automobile control, and the degree of automobile electronics is getting higher and higher. In order to reduce costs and simplify wiring harness connections, various automobile manufacturers have adopted various bus control technologies to achieve the purpose of complex real-time data exchange between numerous electronic control units in automobiles. CAN bus is one of the most important bus protocols. Due to its high transmission rate, low cost, and reliable error handling and error detection mechanisms, it is naturally widely used in the automotive industry. [0003] Currently, the CAN communication network on a car in the prior art mainly inc...
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IPC IPC(8): B60R16/02
Inventor 陈卓文凯陈文静夏珩裴峰周玉山
Owner GAC AION NEW ENERGY AUTOMOBILE CO LTD