Vehicle power supply safety optimization method and device

• Main Authors: LUO YUN, ZHANG SHUANGQUAN, FANG GANG, SUN SHICHAO, CHEN CHUANQUN
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

The invention discloses a vehicle power supply safety optimization method. The vehicle power supply safety optimization method comprises the following steps of: judging whether emergency switches are disconnected or not; if yes, grounding the D+ terminal of a generator; and disconnecting a battery. Thus, according to the vehicle power supply safety optimization method disclosed by the invention, if the emergency switches are judged to be disconnected, the D+ terminal of the generator is grounded, and the generator stops running due to the grounding of an excitation circuit, so that the generator stops working, and then the battery is disconnected; and on one hand, the D+ terminal of the generator is grounded firstly, and the generator stops running due to the grounding of the excitation circuit, so that the current generated by the generator due to inertia cannot enter a vehicle circuit, the situation that the vehicle circuit is impacted by a back electromotive force due to only disconnection of the battery i