Power supply voltage mode management method and device and automobile

Abstract

The invention provides a power supply voltage mode management method and device and an automobile. The method comprises the steps of carrying out filtering on an inputted initial voltage analog-to-digital conversion value, and outputting a first voltage analog-to-digital conversion value; determining a voltage threshold interval and a voltage level of the first voltage according to the first voltage analog-to-digital conversion value, the plurality of voltage threshold intervals and the level corresponding to each voltage threshold interval; correcting the first voltage level to obtain a second voltage level according to the first voltage level, the preset voltage level, the upper limit value and the lower limit value of the voltage threshold interval corresponding to the first voltage andthe preset hysteresis voltage; when the second voltage level is always equal to the preset voltage level in a preset number of continuous periods, updating the steady-state voltage level by using thesecond voltage level; and determining the effectiveness of a functional module according to the steady-state voltage level and the corresponding relationship between the steady-state voltage level and the effectiveness of the functional module. According to the invention, the problems that the voltage class judgment error is large and misjudgment is easy to occur when the voltage is unstable aresolved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a power supply voltage mode management method, device and automobile. Background technique [0002] Now that electrification is common, almost all equipment is inseparable from electricity. For mobile devices, especially vehicle-mounted devices, the functional strategy corresponding to voltage changes is more sensitive. Module devices such as gateways and air conditioner controllers have different working modes under different voltages. The communication mode, diagnosis and energy management of the module equipment have different voltage range requirements, and the voltage level is divided according to the operating voltage range of all functions, so the operating status of the functional module only needs to be changed according to the voltage level without re-judgment voltage for easy modular handling and reusability. The problem with the existing method is that there is...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a power supply voltage mode management method, device and automobile, which are used to solve the problem of large error in judging the voltage level and easy misjudgment when the voltage is unstable

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