An intelligent power supply system for pure electric vehicles

Abstract

The invention belongs to the technical field of power sources of electric vehicles and particularly relates to an intelligent motive force power source system for a full electric vehicle. The intelligent motive force power source system for the full electric vehicle comprises a remote control unit, an infrared module, a control circuit, a constant current charging circuit, a supercapacitor set, an adjustable power discharging circuit and an A / D converter, wherein the input end of the infrared module is connected with the output end of the remote control unit; the input end of the control circuit is connected with the output end of the infrared module; the input end of the constant current charging circuit is connected with a battery pack, and the output end of the constant current charging circuit is connected with the supercapacitor set through the control circuit; the input end of the supercapacitor set is connected with the output end of the constant current charging circuit, and the output end of the supercapacitor set is connected with the input end of the adjustable power discharging circuit; the input end of the adjustable power discharging circuit is connected with the supercapacitor set through the control circuit, and the output end of the adjustable power discharging circuit is connected with a load; and the input end of the A / D converter is connected with the output end of the supercompacitor set, and the output end of the A / D converter is connected with the input end of the control circuit.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle power supplies, and in particular relates to an intelligent power supply system for pure electric vehicles. Background technique [0002] Environmental pollution and shortage of petrochemical energy force people to develop and use various new energy sources. Since 60% of the carbon emissions in the air come from fuel vehicle exhaust, and petrochemical energy is about to be exhausted, people are forced to develop new electric vehicles to solve the current and future vehicle energy problems. [0003] At present, in addition to fuel vehicles accounting for more than 80-90%, there are also hybrid electric vehicles, extended-range electric vehicles and pure electric vehicles. Pure electric vehicles will become one of the main development trends in the future because they are free from the constraints of petrochemical energy. [0004] At present, electric vehicles are mainly based on battery ...

AI Technical Summary

Problems solved by technology

[0006] However, due to insufficient energy density, supercapacitors cannot be used as a power source alone.

Some pure electric vehicles use the battery and the supercapacitor in parallel to complete the power supply function of the vehicle: the battery provides the constant voltage part (the power remains unchanged), and the supercapacitor provides the variable voltage part (variable power) to solve the problem of variable power, but the two There are matching and compatibility problems between different device types, which will adversely affect the overall device performance and life, and the power supply is not in the optimal state; the power variation range is restricted, the charging time is long, the battery life is limited, and the power utilization rate is not high.

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