A hybrid vehicle control method and control system based on fuel cell and lithium battery

Abstract

The invention discloses a hybrid car control method and system based on a fuel cell and a lithium cell. The method comprises the steps that a high-voltage electricity charging control instruction is received, the lithium cell is connected to a high-voltage loop circuit, and high-voltage electricity is charged for a complete vehicle; the electric quantity of the current lithium cell and the state of the fuel cell are detected; according to the detection result, a corresponding power supply control mode is sought in a preset cell state and control mode corresponding relation list, and power supply control is conducted on the fuel cell and the lithium cell according to the power supply mode obtained through seeking. The hybrid car control method based on the fuel cell and the lithium cell can fully bring advantages of the fuel cell and the lithium cell into play, a hybrid car can be environmentally friendly in discharge and can also be suitable for various complex working conditions, and the driving requirements are met; in addition, the utilization efficiency of energy power supply of the two kinds of the cells can be improved. That is to say, by means of the method, the car can completely use clean energy to promote environmental friendliness, the driving range can be increased, and the defect that the driving range of a full electric vehicle is short is overcome.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a hybrid vehicle control method and control system based on fuel cells and lithium batteries. Background technique [0002] With the continuous improvement and improvement of new energy vehicle technology, more and more new energy sources for vehicles have been developed and applied, and fuel cells are a typical representative. A fuel cell is a device that directly converts chemical energy into electrical energy through an electrochemical reaction. As long as there are sufficient fuels and oxidants, the fuel cell can continuously output electrical energy, and therefore can be used as an energy storage device for new energy vehicles. However, because the fuel cell belongs to the principle of chemical reaction to convert energy, the fuel cell is different from the current lithium battery which is more popularized. The popularization and application of fuel cells as energy ...

AI Technical Summary

Problems solved by technology

A fuel cell is a device that directly converts chemical energy into electrical energy through an electrochemical reaction. As long as there are sufficient fuels and oxidants, the fuel cell can continuously output electrical energy, and therefore can be used as an energy storage device for new energy vehicles. However, because the fuel cell belongs to the principle of chemical reaction to convert energy, the fuel cell is different from the current lithium battery which is more popularized. Promote the application of fuel cells alone as energy storage devices

Although some studies have disclosed the mode of using fuel cells and lithium batteries at the same time, the control methods of these existing hybrid vehicles are relatively rough, which cannot effectively utilize the characteristics of fuel cells and lithium batteries, making the energy utilization rate difficult. reach the highest

[0003] Therefore, in the process of realizing the present application, the inventor found that the power supply efficiency of the fuel cell and the lithium battery cannot be sufficiently improved in the prior art, so that the mixed power supply efficiency is not high

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