Combined electric energy control system and control method for electric vehicle

Abstract

The invention discloses a combined electric energy control system and control method for an electric vehicle. A storage battery module is connected with a motor system in parallel; a supercapacitor is connected with the motor system in parallel; a first converter is connected with the storage battery module in series and then is connected with a second converter, the supercapacitor and a peripheral power supply system in parallel separately; and a domestic power supply system is connected with the first converter in series and then is connected with the storage battery module in parallel. According to the control method, the storage battery module can be charged by the domestic power supply system; or the supercapacitor can be rapidly charged by the peripheral power supply system, and then the storage battery module is charged by the supercapacitor; when the vehicle needs to run at high power, the supercapacitor directly supplies power to the motor system; and when the supercapacitor is low in electric quantity, the storage battery module can reversely charge the supercapacitor. The combined charging system provided by the invention is a combination of rapid charge and normal charge, so that the use efficiency of the electric energy of the vehicle can be improved on the basis that the charging time of the electric vehicle can be shortened.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle energy management, and in particular relates to an electric vehicle composite electric energy control system and a control method thereof. Background technique [0002] With the intensification of environmental pollution and the excessive consumption of resources such as oil, energy and environmental issues are becoming more prominent. Cars have become a part of people's basic life as a basic means of transportation. Traditional fuel vehicles will consume a lot of oil, and oil is a non-renewable resource, a large amount of fuel consumption will inevitably cause an energy crisis and seriously restrict the sustainable development of human society; at the same time, fuel consumption will lead to air pollution, which is harmful to human health. The hazards caused are particularly prominent. In this case, people are increasingly advocating a pollution-free, low-energy vehicle as a means of t...

AI Technical Summary

Problems solved by technology

However, the specific energy of supercapacitors is low, and it cannot completely replace batteries at this stage.

At the same time, the lack of power of electric vehicles is also a problem considered by some buyers

In the process of accelerating and climbing the electric vehicle, there is often insufficient power, which brings troubles to the driver and may also cause some safety problems

Images