Vehicle-mounted wireless charging device

Abstract

The invention relates to the field of wireless charging, in particular to a vehicle-mounted wireless charging device. The vehicle-mounted wireless charging device comprises a base fixed on an automobile body, wherein a first printed circuit board (PCB) and a transmitting coil are arranged in the base; the transmitting coil is connected with an automobile power supply through the first PCB; an upper seat is arranged above the base; a second PCB and a receiving coil are arranged in the upper seat; the receiving coil is connected with a universal serial bus (USB) interface circuit through the second PCB; and the first PCB provides variable current to the transmitting coil, so that the receiving coil generates induced current, charging voltage is provided for the USB interface under the action of the second PCB and a mobile phone can be charged by being connected to the USB interface through a data line. The vehicle-mounted wireless charging device acquires suitable charging voltage through an electromagnetic induction principle, avoids occupation of cigarette lighter position or other data interfaces on the automobile, has a simple structure and is convenient to charge.

Description

Technical field [0001] The invention relates to the field of wireless charging, in particular to a vehicle-mounted wireless charging device. Background technique [0002] At present, charging mobile phones etc. in a car generally uses two methods to obtain electricity. One method is to take 12V electricity from the cigarette lighter and then convert the voltage to achieve. This method occupies the position of the cigarette lighter, and the volume of the voltage transformation part is large, which affects the appearance of the car; the other method is to take the 5V voltage directly from the USB port , This method occupies the data interface, and the voltage provided is generally higher than the optimal voltage for mobile phone charging, long-term use will damage the life of the battery. Both methods of taking electricity need to lead out a longer wire, generally about 0.5-1.5m. When using a mobile phone while driving, there may be a danger that the wire will wrap around the shif...

AI Technical Summary

Problems solved by technology

One method is to take 12V from the cigarette lighter and then convert the voltage to realize it. This method occupies the position of the cigarette lighter, and the volume of the transformer part is large, which affects the appearance of the car; the other method is to directly take 5V from the USB port. , this method occupies the data interface, and the voltage provided is generally higher than the optimal charging voltage of the mobile phone, and long-term use will damage the battery life

Both of the power-taking methods need to lead out a long wire, generally about 0.5-1.5m. If you use a mobile phone while driving, there may be a danger of the wire being entangled with the shift handle.

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