Control method and control system of air inlet grid of electric vehicle, and electric vehicle

Abstract

The invention provides a control method and control system of an air inlet grid of an electric vehicle, and the electric vehicle. The control method comprises the following steps: acquiring the outletwater temperature of a low-temperature radiator, the pressure of a vehicle-mounted air conditioner and the vehicle speed when an ignition switch of the vehicle is in an ON gear or the vehicle is in acharging mode; determining the first opening degree of the gas inlet grid according to the outlet water temperature of the low-temperature radiator, the pressure of the vehicle-mounted air conditioner and the vehicle speed; and controlling the gas inlet grid to feed gas at the first opening degree. According to the control method, on the premise of ensuring the performance of the electric vehicle, the electric quantity consumption of a power battery can be improved, and the driving mileage of the whole vehicle can be improved.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a control method and control system for an electric vehicle air intake grille and the electric vehicle. Background technique [0002] The grille is an important part of the car's front styling and is the inlet for air to flow into the engine bay. At present, in the field of electric vehicles, the air intake grille has only two states: fully open and fully closed. During the driving of an electric vehicle, if the air intake grille is closed, the air intake in the engine compartment will be blocked, resulting in a great impact on the cooling of the high-pressure components in the engine compartment, and the low-temperature circuit coolant may be due to excessive temperature. And boiling; if the air intake grille is turned on, air can enter the engine compartment to cool the high-voltage components in the engine compartment, but at the same time it will also increase the ...

AI Technical Summary

Problems solved by technology

During the driving of an electric vehicle, if the air intake grille is closed, the air intake in the engine compartment will be blocked, resulting in a great impact on the cooling of the high-pressure components in the engine compartment, and the low-temperature circuit coolant may be due to excessive temperature. And boiling; if the air intake grille is turned on, air can enter the engine compartment to cool the high-voltage components in the engine compartment, but at the same time it will also increase the aerodynamic resistance, requiring the power battery to consume power and energy to overcome the aerodynamic resistance, but in this way It will affect the optimal output of the vehicle's dynamic performance, and the consumption of battery power will affect the cruising range

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