Design and practical application analysis of thermal management system for power battery in new energy vehicles

Due to the significant advantages of electric vehicles in terms of energy saving and emission reduction, they have been strongly supported and developed by the state and society in recent years. As a key component of electric vehicles, the performance of power battery is significantly affected by temperature, and thermal management is crucial to the charging and discharging performance, reliability and life of the battery. In order to extend the service life of the battery, realize the scientific management of the power battery system, ensure the normal operation of the battery thermal management system, and improve the efficiency of electric vehicles, this paper focuses on constructing the mathematical model of the battery module and the motor module, which are the executive part of the battery thermal management system, introducing the classical PID control theory of the motor, and carrying out the design of the fuzzy controller. Finally, the rotational speed of the motor is simulated by the traditional PID control strategy and fuzzy control strategy, which provides effective data for the parameters of the motor in the experiment, verifies the correctness of the calculation model, and shows that this model can be used for the design of this kind of thermal management system, and provides a certain reference for the application of practical engineering.