High-reliability airborne portable USB charging module

Abstract

The invention relates to a high-reliability airborne portable USB charging module. The USB charging module is composed of a USB voltage reduction module and a USB socket. The USB voltage reduction module comprises a multi-path USB current limiting switch, and in the embodiment of the invention, two paths are set; one end of the multi-path USB current limiting switch is connected to an aviation power supply end through a voltage reduction voltage stabilizer DC / DC, and in the application environment of the embodiment, the aviation power supply end provides DC28V power so as to obtain voltage output after voltage reduction and stabilization from the aviation power supply end, and the other end is connected with the corresponding USB socket so as to form multi-path USB port output of differentcurrents. 5V / 2.1 A and 5V / 1A charging ports are provided respectively, charging ports can be provided for any consumer product needing a USB interface, for example, most mobile phones, tablet personal computers and GPS equipment, and the USB charging module is small, exquisite, economical and easy to install and can be used for a cockpit and an internal cabin.

Description

technical field [0001] The invention relates to the technical field of airborne multimedia equipment, in particular to a highly reliable airborne portable USB charging module. Background technique [0002] At present, there are many mature USB chargers on the market. This ordinary USB charger has developed from the previous 5W to the current nearly 100-watt fast charge. High-voltage fast charge and low-voltage fast charge compete with each other. QC, FCP, SCP, MTK Various fast charging protocols such as PE, AFC, and USB PD are in full bloom, and are widely used in portable electronic devices (mobile phones, tablet computers, etc.). [0003] Problems and disadvantages: 1) Ordinary USB chargers can only work under the mains AC86~260V / 50-60HZ, and cannot work in the airborne DC28V power supply environment; 2) Power banks are forbidden to be brought on the plane due to safety regulations, passengers and flight attendants Personnel cannot charge portable electronic devices on th...

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Problems solved by technology

[0003] Problems and disadvantages: 1) Ordinary USB chargers can only work under the mains AC86~260V / 50-60HZ, and cannot work in the airborne DC28V power supply environment; 2) Power banks are forbidden to be brought on the plane due to safety regulations, passengers and flight attendants Personnel cannot charge portable electronic devices on the plane, which brings great inconvenience to passengers and flight attendants, and urgently needs to be resolved

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