Management and control method of energy of vehicle-mounted composite power supply

Abstract

The invention discloses a management and control method of the energy of a vehicle-mounted composite power supply, which comprises the following steps: 1, a system working model is established according to a management and control system of the energy of the vehicle-mounted composite power supply; wherein, the vehicle-mounted composite power supply includes a fuel battery for power supply and a super capacitor for power; the management and control system includes a Boost converter connected with the fuel battery in series and a Buck-Boost converter connected with the super capacitor in series;the Boost converter includes a first control switch, the Buck-Boost converter includes a second control switch and a third control switch; 2, the electric vehicle running load current is acquired inreal time; 3, the on-off of the first control switch, second control switch and third control switch is controlled according to the load current and the system working model, and the management of theoutput energy on one side of the fuel battery and output power on the other side of the super capacitor is achieved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a method for managing and controlling the energy of a vehicle-mounted composite power supply. Background technique [0002] The growing global concern for energy conservation and environmental protection has brought about the rise of electric vehicles. At present, many vehicles use fuel cells as the main energy source, which has the advantages of high power generation efficiency, low environmental pollution, high energy density, and low noise. However, in order to prevent fuel shortages and improve their performance and life, fuel cells must be limited The current change rate of the fuel cell brings the problem of slow dynamic response of the fuel cell. [0003] Using supercapacitors as auxiliary energy can well solve the technical problem of slow dynamic response of fuel cells. Although the two energy sources are combined, the advantages of both can be reflected in the compo...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned prior art, the present invention provides a method for managing and controlling the energy of a vehicle-mounted composite power supply, which effectively solves the technical problem in the prior art that the power and energy between the fuel cell and the supercapacitor cannot be reasonably allocated

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