Power-on control method and device for low-voltage storage battery of electric automobile and electric automobile

Abstract

The invention provides a power-on control method and device for a low-voltage storage battery of an electric automobile and the electric automobile, and relates to the field of power-on processing ofthe low-voltage storage battery of the electric automobile. The power-on control method for the low-voltage storage battery of the electric automobile comprises the steps: obtaining a performance reduction judgment result of a previous power-on period of a current power-on period of the low-voltage storage battery and the awakening frequency Ni of a controller in the power-on process of the low-voltage storage battery; determining a low-voltage power-on mode of the current power-on period of the low-voltage storage battery according to the performance reduction judgment result and the wake-upfrequency Ni; and obtaining a performance reduction judgment result of the low-voltage storage battery in the current power-on period when the low-voltage storage battery is powered on according to the low-voltage power-on mode and the awakening frequency of the controller. According to the embodiment of the invention, the stability and stationarity of the output voltage in the power-on process ofthe low-voltage storage battery are ensured by detecting the performance degradation of the storage battery and awakening the controller by stages, and the driving feeling is ensured.

Description

technical field [0001] The invention relates to the field of power-on processing of a low-voltage battery of an electric vehicle, in particular to a method and device for power-on control of a low-voltage battery of an electric vehicle and the electric vehicle. Background technique [0002] In the face of increasingly severe energy and environmental problems, energy-saving and new energy vehicles are becoming research hotspots in various countries. The governments of major countries in the world are vigorously developing energy-saving and new energy vehicles. The global environment is of great significance. In my country, energy-saving and new energy vehicles have been highly valued by the government and the industry. They are not only of great significance to my country's energy security and environmental protection, but also the future development trend of my country's automobile field. [0003] Different from traditional fuel vehicles, the energy of electric vehicles is ...

AI Technical Summary

Problems solved by technology

[0007] Embodiments of the present invention provide a low-voltage battery power-on control method and device for an electric vehicle and an electric vehicle, which are used to solve the performance degradation of the battery in the prior art due to the increase in service time. It can ensure the stability of the output voltage during the low-voltage power-on process of the vehicle, and the problem of poor driving experience caused by the reliability of the vehicle power-on process through fault agreement

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