Power-off protection-type mobile phone charger

Abstract

The invention provides a power-off protection-type mobile phone charger, which comprises a shell, a touch unit, a power-off protection unit, a charge circuit and a USB connecting line, wherein the power-off protection unit and the charge circuit are arranged in the shell; the shell is provided with a USB interface; the charge circuit is connected with the USB connecting line through the USB interface; the power-off protection unit comprises a controller, a relay and a timer; the charge circuit is connected with a commercial power through the relay; the relay is also connected with the controller; the controller is connected with the timer; and the touch unit is arranged on the shell and is connected with the controller. According to the power-off protection-type mobile phone charger, disconnection of the charge circuit and the commercial power can be automatically achieved; power-off protection of the charger can be achieved; the use security of the charger is strengthened; potential safety hazards of over-quick damage or spontaneous combustion and the like caused by long-term working of the charger are avoided; and a certain energy-saving effect can be achieved due to the fact that the charger does not continuously work after a power failure.

Description

technical field [0001] The invention relates to a power-off protection mobile phone charger. Background technique [0002] The mobile phone charger converts high voltage into low voltage through a transformer. If it is not unplugged for a long time, it will always work. The charger still consumes power if it is not unplugged, and the largest power consumption of the mobile phone charger is 308 milliwatts. The charger is not unplugged from the power socket. Although the charger is not connected to the mobile phone, the circuit board inside the charger is powered on and still working, which will still consume power. [0003] After the charger works for a long time, the charger will heat up, and the insulation layer of the coil may be melted, causing a short circuit. The charger is very small, there is no space and no heat dissipation, whether it is overheated or short-circuited, it is easy to cause combustion. Generally, a mobile phone can be fully charged within 4 hours at...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a power-off protection type mobile phone charger to solve the problem in the prior art that the charger is not unplugged for a long time and there are great fire hazards and other hidden dangers

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