Battery system current output control method and device and computer equipment

Abstract

The invention relates to a battery system current output control method and device, computer equipment and a storage medium. The method comprises the steps of obtaining a current working current of abattery system and a battery characteristic limiting current determined according to a current output characteristic, and determining a current over-limit ratio according to the battery characteristiclimiting current and the current working current; determining a current limiting coefficient according to the current over-limit ratio and a preset current limiting coefficient determination condition; determining a limiting current according to the current limiting coefficient and the battery characteristic limiting current; when the current working current exceeds the limiting current, determining the current request torque of the motor system, controlling the motor system to output the corresponding limiting torque according to the current request torque, and enabling the limiting torque to determine that the battery system outputs the corresponding working current; and returning to the step of acquiring the current working current of the battery system and the battery characteristic limiting current determined according to the current output characteristic. By adopting the method, overcurrent faults of the battery system can be avoided, and the service life of the battery system is prolonged.

Description

technical field [0001] The present application relates to the technical field of electric vehicles, in particular to a battery system current output control method, device, computer equipment and storage medium. Background technique [0002] At present, climate change, energy and environmental issues are long-term issues faced by human society. With the widespread application of fuel vehicles, the problems of energy consumption and vehicle exhaust emissions are becoming more and more serious, and the upgrading of the industrial structure of the automotive industry and the strategic transformation of the power system's electrification have received more and more attention. Among them, the technology of electric vehicles powered by vehicle-mounted power supplies and motor-driven wheels has been developed rapidly, and its impact on the environment is much smaller than that of traditional fuel vehicles, so it has broad application prospects. [0003] However, in the current out...

AI Technical Summary

Problems solved by technology

[0003] However, in the current output control process of the battery system of the electric vehicle motor system, it is easy to change the operating efficiency point of the motor system, resulting in over-discharge or over-charge over-current faults in the battery system, reducing the service life of the battery system

Images