Vehicle power management system and control method thereof

Abstract

The invention provides a vehicle power management system. The vehicle power management system comprises a generator, a storage battery sensor, an engine control module and a power management controller, wherein the generator is used for providing the current state information of the generator for the power management controller; the storage battery sensor is used for providing the current state information of a storage battery for the power management controller; the engine control module is used for providing the current state information of an engine for the power management controller; and the power management controller is used for judging the current dynamic load limitation level of a vehicle according to the current state information of the storage battery, the current working state information of the generator, the current working state information of the engine and the electricity load starting information of the vehicle during operation of the engine and sending the current dynamic load limitation level to a corresponding electricity load and further used for judging the current static load limitation level of the vehicle according to the current state information of the storage battery and the electricity load starting information of the vehicle during stopping of the engine and sending the current static load limitation level to a corresponding electricity load. The vehicle power management system is high in integration level and easy to achieve.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle power management system and a control method thereof. Background technique [0002] The application of automotive electronic technology is becoming more and more extensive, new electronic and electrical technologies are changing with each passing day, and the large increase in electrical systems and control modules has caused the power consumption of the vehicle load to increase, and the demand for electric energy is increasing. If the vehicle's power supply system and load consumption cannot be well controlled and managed, there will be problems such as insufficient output of the generator, failure to start the battery due to power loss, and reduced battery aging life, which will affect the safe driving of the vehicle in severe cases. At the same time, the large increase in electrical systems and control modules increases the dark current when the vehicle is dorman...

AI Technical Summary

Problems solved by technology

If the power supply system and load consumption of the vehicle cannot be well controlled and managed, there will be problems such as insufficient output of the generator, failure to start the battery due to power loss, and reduced battery aging life, which will affect the safe driving of the vehicle in severe cases.

At the same time, the large increase in electrical systems and control modules increases the dark current when the vehicle is dormant, which will affect the parking time of the vehicle. When the vehicle is parked for a long time or during transportation, the vehicle may not be able to start and drive normally.

[0003] In recent years, with the widespread application of automotive electronic technology, more and more models have developed power management systems, but the functions are simple and not perfect, and there is a lack of coordination among multiple functions.

For example, when the battery power is too low, the car owner cannot know in time and take corresponding measures. The vehicle cannot limit the power of the generator or limit the power consumption of the load to achieve dynamic balance under different working conditions. The benefits brought by the power management system are not easy for the car owner to perceive. And when the vehicle is parked for a long time, it cannot actively limit the dark current to prolong the parking time of the vehicle, and the vehicle cannot prompt the owner to inform the vehicle location or status when the battery is low

Images