Dynamic planning method and system for optimal charging path of electric vehicle

• Main Authors: ZHENG YING, XIANG SHUN, MOU LISHA, DENG CHENGHAO, ZHANG SHAOHONG, ZHU QIAN
• Format: Patent
• Language: Chinese; English
• Published: 25.02.2022
• Subjects: ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

The invention discloses a dynamic planning method and system for an optimal charging path of an electric vehicle, and the method comprises the following steps: firstly, establishing a charging cost function based on an electric model, a thermal model, an SOC and charging time calculation model of a battery, an n-order polynomial charging strategy and a charging boundary; then determining a current state and a target state of a battery of the electric vehicle and inputting the current state and the target state into a charging cost function, and then solving an n-order polynomial charging strategy which enables the charging cost function to be minimum by utilizing an optimization algorithm and enabling the electric vehicle to be charged according to an optimal charging path, and finally, calculating and updating the n-order polynomial charging strategy again according to the state of the battery and the target state every preset time interval, thereby realizing the dynamic planning of the optimal charging path