New energy vehicle fault safety protection method and system

• Main Authors: JU DUHU, SHI YU, SHI CHENGLONG, XIONG JINFENG
• Format: Patent
• Language: Chinese; English
• Published: 13.07.2021
• Subjects: LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

The invention discloses a new energy vehicle fault safety protection method and system. The power-assisted steering energy source of the new energy vehicle is a power battery, and the method comprises the steps that when a vehicle controller detects that the vehicle breaks down, a power battery loop of the vehicle is controlled to be disconnected; when the motor controller detects that a power battery loop of the vehicle is disconnected, the driving motor is controlled to continue to work in a braking power generation state, kinetic energy is converted into electric energy, and energy is provided for a power-assisted steering system of the whole vehicle. According to the method, energy can be continuously provided for the power-assisted steering system of the whole vehicle after the power battery loop is disconnected, the out-of-control risk of the vehicle is effectively prevented, only software control algorithms corresponding to the whole vehicle controller and the motor controller need to be updated, and e