Electric vehicle low-voltage battery anti-electricity-lack automatic control system and control method thereof

Abstract

The invention discloses an electric vehicle low-voltage battery anti-electricity-lack automatic control system. The system comprises a low-voltage battery, a DCDC module, a high-voltage power batterysystem, a whole vehicle controller, a vehicle-mounted terminal, an intelligent terminal and a CAN, wherein the positive pole and the negative pole of the low-voltage battery are correspondingly and electrically connected with the vehicle-mounted terminal, the positive pole and the negative pole of the low-voltage battery are further correspondingly and electrically connected with the DCDC module,the CAN is correspondingly and electrically connected with the DCDC module, the high-voltage power battery system, the whole vehicle controller and the vehicle-mounted terminal, the DCDC module is electrically connected with the high-voltage power battery system, and the vehicle-mounted terminal is in communication connection with the intelligent terminal. The invention further discloses a controlmethod of the electric vehicle low-voltage battery anti-electricity-lack automatic control system. According to the control system and the control method, the service life of the low-voltage batteryis greatly prolonged, the loss and the replacement frequency of the low-voltage battery are reduced, the vehicle usage cost is saved for a user, resource waste is reduced for the society, an electricvehicle is more environment-friendly, and a contribution is made to cleaning of the environment.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an automatic control system for preventing power loss of low-voltage batteries of electric vehicles and a control method thereof. Background technique [0002] The low-voltage battery is the source of power supply for all electronic and electrical systems in the car. The power and quality of the low-voltage battery are the most basic and critical elements to ensure the normal operation of each electronic and electrical system. With the deepening of the development of electrification, intelligence and networking of automobiles, especially for electric vehicles (pure electric vehicles, hybrid electric vehicles, fuel cell vehicles, etc.), its scheduled charging, wireless charging, remote query of vehicle status, remote authorization Unattended automatic function configurations such as opening and opening the vehicle are becoming more and more abundant. The prerequisite for...

AI Technical Summary

Problems solved by technology

Although, in the early stage of automobile development and design, there is a redundant design for low-voltage battery selection that considers the vehicle’s parking for a period of time, but in practical applications, it has not fundamentally relieved the user’s concerns about the vehicle’s parking time requirements, and long-term parking has a negative impact on low-voltage batteries. Battery life is also seriously affected

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