Low-voltage power management method and system and 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, wherein the low-voltage power supply management method includes: detecting that the entire electric vehicle enters a dormancy mode, recording the dormancy time, and waking up a charging device every preset time; detecting The power of the low-voltage power supply, if the power of the low-voltage power supply is less than the preset power, control the charging device to charge the low-voltage power supply; control the charging time of the charging device according to the running time of the electric vehicle. The low-voltage power supply management method and system and the electric vehicle of the present invention can avoid low-voltage power loss and improve the efficiency and safety of low-voltage power supply charging in 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.

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