Method for prolonging service life of electric automobile battery

Abstract

The invention discloses a method for prolonging the service life of a battery of an electric vehicle, and relates to the technical field of electric vehicles. The method comprises the following steps:system modeling, namely a driving system model, a vehicle interior thermal load system model, a heating, ventilating and air conditioning system model and a battery system model of the electric vehicle are established; acquisition of decision parameters, namely the decision parameters of the electric vehicle from the starting moment to a certain later moment are obtained; and obtaining and refreshing of a control decision, namely an optimal control decision of a heating, ventilation and air conditioning system is obtained based on a model prediction control method, and the optimal control decision acts on the heating, ventilation and air conditioning system. The method has the advantage of being low in complexity of a control algorithm, the performance of the heating, ventilating and airconditioning system can be dynamically adjusted according to the energy consumption requirement of a driving system of the vehicle, collaborative optimization control over the two energy consumption systems is achieved, and the service life of the battery system is prolonged while the comfort of a driver and passengers in the vehicle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a method for prolonging battery life of electric vehicles. Background technique [0002] Facing the increasingly prominent energy shortage and environmental pollution problems, electric vehicles are regarded as the future development direction of the automobile industry due to their advantages of energy saving, environmental protection and low cost of use. However, problems such as short cruising range of electric vehicles, difficulty in charging, short battery life, and high battery prices have also restricted the development of the electric vehicle industry. At present, in the research on improving the battery performance and prolonging the battery life of electric vehicles, the impact of the dynamic performance of the drive system on the battery performance is often considered, and the important impact of the HVAC system on the energy consumption of the vehicle is mo...

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Problems solved by technology

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to overcome the problem that the performance of electric vehicle batteries cannot be effectively improved and the battery life can be prolonged due to ignoring the important influence of the HVAC system on the energy consumption demand of the vehicle. A way to extend the life of electric vehicle batteries

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