Method and system for controlling remote preheating of electric automobile

Abstract

The invention provides a method and system for controlling remote preheating of an electric automobile. The method for controlling remote preheating of the electric automobile comprises the steps of obtaining a vehicle use reservation instruction transmitted by a remote terminal; determining reserved vehicle use beginning time according to the vehicle use reservation instruction; obtaining a preheating time needed by heating a power battery to a first set temperature threshold; determining a preheating beginning time according to a vehicle use beginning time and the preheating time; if the preheating beginning time is larger than a set time threshold, enabling a vehicle-mounted TBOX to begin to time; when the preheating beginning time is reached, transmitting a dormancy awakening signal toawaken a vehicle controller by using a CAN bus and transmitting a preheating signal to the vehicle controller; and after the vehicle controller receives the preheating signal, transmitting a heatingsignal to a battery management module, wherein the battery management module controls a heating module to preheat the power battery. According to the method for controlling remote preheating of the electric automobile, the vehicle use comfort can be enhanced and the cruising ability of the electric automobile can be improved.

Description

technical field [0001] The invention relates to the technical field of remote control of automobiles, in particular to a method and system for remote preheating control of electric vehicles. Background technique [0002] The use of electric vehicles in winter has always been an important factor that has plagued their promotion in cold regions. The discharge characteristics of batteries at low temperatures are poor, resulting in a reduction in the driving range of electric vehicles. At the same time, low-temperature charging of electric vehicles needs to preheat the battery. In the prior art, the power battery is usually heated before driving the car. However, in low-temperature weather, the temperature of the power battery is heated to the normal starting temperature of the electric vehicle. It takes a long time. For example, heating a power battery from a low temperature such as -20°C to 5°C takes about 4-5 hours, which takes a long time. Therefore, how to control the preh...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method and system for remote preheating control of an electric vehicle, which solves the problems that the existing electric vehicle is started in a low temperature environment, and the power battery is not preheated, which easily causes the power battery to have poor discharge characteristics and the cruising range is reduced. Improve the comfort of vehicle use and increase the battery life of electric vehicles

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