Electric vehicle vehicle controller

Abstract

The invention relates to the field of control of electric automobiles, and discloses an integral controller of an electric automobile. The integral controller is connected with a safety controller through an integral CAN (controller area network) bus, and comprises a main processor and a slave processor, wherein communication connection is established between the main processor and the slave processor through an SPI (single program initiation) bus and a PWM (pulse width modulation) signal, the slave processor is used for monitoring the main processor, the main processor and the slave processor are used for respectively receiving an accelerator pedal signal, a brake pedal signal, a vehicle-mounted power source signal and / or a temperature sampling signal, the main processor is provided with a main CAN channel, the slave processor is provided with a slave CAN channel and a channel shifting switch, and the channel shifting switch is used for shifting the connection of the integral CAN bus and the main CAN channel or the slave CAN channel. When the main processor fails, the slave processor is used for shifting the integral CAN bus to the slave processor, and the slave processor can replace the main processor for work, so the safety class of the integral controller of the electric automobile is improved through the setting of double processors.

Description

technical field [0001] The invention relates to the field of electric vehicle control, in particular to a complete vehicle controller of an electric vehicle. Background technique [0002] With the shortage of energy and the increasingly serious environmental pollution, countries have higher and higher requirements for vehicle emissions. Electric vehicles, as a kind of green transportation with almost zero pollution, have been paid more and more attention by governments. The vehicle controller is one of the core components of electric vehicles, and its performance is directly related to the industrialization process of electric vehicles. Many domestic universities and enterprises have also invested a lot of manpower and material resources in the design and development of electric vehicle controllers, and completed the debugging or small batch trial production of functional samples. However, at present, the design of domestic vehicle controllers is often only based on the con...

AI Technical Summary

Problems solved by technology

In the existing technology, all the working channels of the controller are generally connected to the external controller through a CAN bus, but a CAN bus is prone to failure. Once a failure occurs, the entire vehicle will not work

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