Pure electric vehicle power-on and power-off control method and whole vehicle high-voltage topological structure

Abstract

The invention provides a power-on and power-off control method for a pure electric vehicle, which comprises the following steps of: performing priority judgment on a received mode switching instruction, and determining a power-on and power-off mode pointed by the mode switching instruction with the highest priority; and determining a current power-on and power-off mode and a high-voltage power-on and power-off state of the vehicle, responding to the mode switching instruction when the high-voltage power-off process of the current power-on and power-off mode is completed, and switching the power-on and power-off mode of the vehicle to the power-on and power-off mode pointed by the mode switching instruction with the highest priority. The invention provides a whole vehicle system high-voltage main framework capable of guaranteeing the safety, stability and compatibility of high-voltage electricity utilization of the whole vehicle, defines four power-on and power-off modes of the whole vehicle, and stipulates normal high-voltage power-on and power-off processes of the modes and a switching method among the modes, so that the high-voltage electricity utilization of the whole vehicle is in a safe state, and the high-voltage electricity utilization efficiency of the whole vehicle is improved. And long-term high-voltage electricity utilization safety of the whole vehicle is ensured.

Description

technical field [0001] The invention relates to the technical field of power-on and power-off control of a pure electric vehicle, in particular to a power-on and power-off control method of a pure electric vehicle and a high-voltage topology structure of the whole vehicle. Background technique [0002] In recent years, the new energy bus industry has continued to develop and its market share has continued to increase, and the safety of high-voltage power consumption of new energy buses has always been the focus of the market. In order to meet the increasingly complex function and performance requirements of the vehicle, the number of high-voltage electrical components in the vehicle increases. If a dedicated high-voltage topology architecture is developed for the newly added high-voltage components, the types of high-voltage system architectures will increase, which not only increases the scientific research and development and after-sales service. The maintenance cost is al...

AI Technical Summary

Problems solved by technology

In order to meet the increasingly complex function and performance requirements of the vehicle, the number of high-voltage electrical components in the vehicle increases. If a dedicated high-voltage topology architecture is developed for the newly added high-voltage components, the types of high-voltage system architectures will be increased, which will increase both scientific research and development and after-sales services. The cost of maintenance is not convenient for the vehicle factory to control the high-voltage structure. The most important thing is that there are great challenges and hidden dangers in the stable and safe use of the high-voltage system of the vehicle

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