Vehicle-mounted system and power management method and power management device thereof

Abstract

The invention provides a power management method of a vehicle-mounted system, which comprises the following steps of: if a vehicle is started, controlling the vehicle-mounted system to be in a normal charging state; and if the vehicle is not started and the vehicle-mounted system is opened, controlling the vehicle-mounted system to be in a temporary charging state, and controlling the vehicle-mounted system to automatically enter a sleep stage. Thus, a vehicle-mounted power supply is saved, and the time of awakening the vehicle-mounted system to be in a working state is shortened. The invention also provides a power management device of the vehicle-mounted system, which is used for managing the vehicle-mounted power supply. The invention also provides a power management system of the vehicle-mounted system, which comprises the power management device of the vehicle-mounted system and realizes the management method of the vehicle-mounted power supply. In the invention, the vehicle-mounted system is controlled to be in different states according to whether the vehicle is started or not, thereby saving the vehicle-mounted power supply and shortening the time of awakening the vehicle-mounted system to be in a working state.

Description

technical field [0001] The invention relates to the technical field of automotive electronics, in particular to a vehicle-mounted system, a power management method and a power management device thereof. Background technique [0002] Nowadays, the automobile industry is developing rapidly, the number of automobiles is increasing, and in-vehicle systems are becoming more and more popular. Because the vehicle-mounted system contains many functional modules and functional devices, it not only consumes a lot of power during use, but also takes a long time to enter the working state. Therefore, people gradually pay attention to the power management of the vehicle-mounted system and shorten the wake-up of the vehicle-mounted system. time issue. [0003] Usually, the on-board system uses the on-board power supply for power supply. There are generally two sources of the on-board power supply. The car generator supplies power to the car battery and the car battery independently suppl...

AI Technical Summary

Problems solved by technology

However, when the vehicle-mounted system is started, due to the need to power on and initialize each module of the vehicle-mounted system (including various types of vehicle-mounted equipment or devices), it takes a long response time to complete the start-up. Similarly, when the vehicle-mounted system is turned off (Referring to normal shutdown), it is also necessary to have a module to shut down all vehicle systems, including operations such as ending all processes currently running in each module, resulting in a longer response time for shutdown

[0004] In the Chinese patent application with the patent application number 200610164287.7, a monitoring method for vehicle power supply is provided, which solves the problem of vehicle power supply switching

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