Low-voltage power supply management method and system, electric vehicle and storage medium

Abstract

The invention discloses a low-voltage power supply management method and system, an electric vehicle and a storage medium. The low-voltage power supply management method comprises the following stepsthat firstly, when it is detected that a whole electric vehicle enters a sleep mode, the sleep time is recorded, and a charging device is waken up every preset time; secondly, the electric quantity ofa low-voltage power supply is detected, and the charging device is controlled to charge the low-voltage power supply if the electric quantity of the low-voltage power supply is smaller than the preset electric quantity; and thirdly, the charging time of the charging device is controlled according to the running duration of the electric vehicle. The low-voltage power supply management method, thelow-voltage power supply management system and the electric vehicle can prevent low voltage from losing power, and improve the charging efficiency and safety of the low-voltage power supply in the sleep mode.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a low-voltage power management method, a low-voltage power management system, an electric vehicle, and a storage medium. Background technique [0002] For electric vehicles, especially pure electric vehicles, battery life is a key aspect, and as functions become more diverse and configurations become more abundant, the power consumption of electrical equipment for vehicles continues to increase, and the number of network nodes continues to increase. When the whole vehicle is not connected to high voltage, the low-voltage battery is prone to power loss, which will cause the high-voltage system to fail to be powered on, resulting in the problem that the vehicle cannot be started. [0003] At present, for low-voltage batteries of electric vehicles, such as 12V batteries, the cost is high by adding new battery sensor technology; and to realize the charging of 12V batteri...

AI Technical Summary

Problems solved by technology

[0002] For electric vehicles, especially pure electric vehicles, battery life is a key aspect, and as functions become more diverse and configurations become more abundant, the power consumption of electrical equipment for vehicles continues to increase, and the number of network nodes continues to increase. When the whole vehicle is not connected to high voltage, the low-voltage battery is prone to power loss, which leads to the failure of the high-voltage system to be powered on, resulting in the problem that the vehicle cannot be started

[0003] At present, for low-voltage batteries of electric vehicles, such as 12V batteries, the cost is high by adding new battery sensor technology; and to realize the charging of 12V batteries, a high-voltage system must be installed on the whole vehicle. In related technologies, the charging power Most of them are real-time monitoring, and the static current is relatively large; moreover, during the charging process, all network nodes of the vehicle need to be awakened, which consumes a lot of power and is dangerous.

Images