Notebook computer power supply circuit having power bank function in shutdown state and notebook computer

Abstract

The invention provides a notebook computer power supply circuit having a power bank function in a shutdown state and a notebook computer. The notebook computer power supply circuit having the power bank function in the shutdown state comprises a voltage detection circuit, a power supply switching circuit, a voltage reduction module and a USB charging module; and the notebook computer battery is connected with the power switching circuit, the power switching circuit is connected with the voltage detection circuit and the voltage reduction module, the voltage reduction module is connected with the USB charging module, and the USB charging module is connected with a CPU and a USB interface of a notebook computer. By adopting the technical scheme, the standby power consumption of the notebookcomputer is reduced, the service time of the notebook computer is prolonged, the service life of the battery is prolonged, meanwhile, the battery of the notebook computer is prevented from being over-discharged, the notebook computer can use a charging function when being shut down, and a user can use the notebook computer more conveniently.

Description

technical field [0001] The invention belongs to the technical field of circuits, and in particular relates to a notebook computer power supply circuit and a notebook computer with the power bank function when the power is turned off. Background technique [0002] At present, notebook computers generally have a USB type-a interface, which is used for external storage devices, and can also charge peripherals such as mobile phones. When the laptop USB interface is used as a charging interface, the maximum charging current can only be 5V / 0.5A, and it can only be used when the computer is turned on. On the market, computers with integrated power bank functions generally have relatively high standby power consumption. The reason is that the power bank needs to be additionally controlled, so that some power supplies of the motherboard cannot be turned off, resulting in high power consumption during standby. Contents of the invention [0003] Aiming at the above technical problem...

AI Technical Summary

Problems solved by technology

On the market, computers with integrated charging treasure function generally have a large standby power consumption. The reason is that the charging treasure needs to be additionally controlled, so that part of the power supply of the motherboard cannot be turned off, resulting in high power consumption in standby mode.

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