Power supply management system and power supply management method

Abstract

The invention discloses a power supply management system used for electronic equipment. The power supply management system comprises a power supply unit, a charging unit, a processing unit and a system management bus, wherein the power supply is used for providing electric power; the charging unit is used for providing the electric power from the power supply unit for electronic equipment, detecting power consumption of the electronic equipment and transmitting a first signal corresponding to the power consumption; the processing unit is used for receiving the signal from the charging unit and selecting working modes according to the signal of the charging unit; the charging unit is connected with the processing unit by the system management bus; and the charging unit comprises a signal superposition module and is used for stacking a second signal to the first signal when preset conditions are met.

Description

technical field [0001] The invention relates to a power management system and a power management method, in particular to a power management system and a power management method for power management when a charging circuit only provides system power consumption information. Background technique [0002] In the existing technology of system power management, when the rated power of the power supply is less than the standard power consumption of the system, the system can make a corresponding response by identifying the type of power supply (such as the model of the power adapter, rated power, rated voltage, etc.) Power management actions, for example, when a power supply with a rated power of 45W is connected to a system with a standard power consumption of 65W, the system will start operations such as CPU frequency reduction after recognizing the rated power of the power supply, so as to ensure that the system does not run There is a shutdown situation. However, in some com...

AI Technical Summary

Problems solved by technology

However, in some computer systems, the system cannot identify the type of power supply, but only requires the charging circuit to provide the power consumption information of the system, so the system cannot judge the power of the connected power supply, and thus cannot intelligently manage it according to the connected power supply The frequency of the CPU and the power consumption of the system may cause the system to shut down due to the up-frequency operation of the CPU.

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