Electric aircraft energy management system

Abstract

The invention provides an electric airplane energy management system, belongs to the technical field of energy management, and particularly relates to the electric airplane energy management system. The invention provides the electric airplane energy management system through which safe flight time of an airplane can be pre-judged. The electric airplane energy management system comprises a battery unit current acquisition part, a temperature acquisition part, a battery monitoring part, a controller and battery unit balancing modules. The structural key points of the electric airplane energy management system are that the voltage signal acquisition port of the battery monitoring part is connected with batteries. The batteries are connected in series, and the battery unit balancing modules are connected between the positive and negative electrodes of each battery. The control signal input ports of the battery unit balancing modules are connected with the control signal output port of the battery monitoring part. The current signal output port of the battery unit current acquisition part is connected with the current signal input port of the battery monitoring part. The temperature signal output port of the temperature acquisition part is connected with the temperature signal input port of the battery monitoring part.

Description

technical field [0001] The invention belongs to the technical field of energy management, in particular to an energy management system of an electric aircraft. Background technique [0002] The electric aircraft battery pack is composed of multiple single-cell lithium-ion batteries connected in series. Due to the obvious nonlinearity, inconsistency and time-varying characteristics of lithium batteries, it is easy to cause battery damage in groups of batteries due to the influence of charge acceptance capacity, self-discharge rate and capacity decay rate of each single battery during the long-term charge and discharge process. The dispersion between them increases, and the performance attenuation intensifies. A problem with one battery in the series battery pack will cause the entire battery pack to lose its function. Therefore, when charging and discharging the battery, it is necessary to pay attention to the balanced management and monitoring of the battery cells, and find ...

AI Technical Summary

Problems solved by technology

[0004] For aircraft, the biggest difference between lithium batteries and traditional fuels is the unpredictability of lithium battery energy, which will cause aircrafts to not be able to accurately know the mileage like aviation kerosene, and the energy consumption of aircrafts in different flight states. Huge difference; thus making the aircraft dangerous to fly

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