Vehicle mounted universal power supply adapter

Abstract

The invention relates to a vehicle universal power adapter, in particular to a power adapter of an electronic device. The invention provides an energy-saving and environmental-friendly vehicle universal power adapter which does not need an inverter, can directly convert the 12V / 48V voltage of the vehicle into adjustable output voltage to be adapted for the demands of different electric appliancesand has good power conversion efficiency. The vehicle universal power adapter is provided with a DC / DC converting and regulating circuit, a sampling circuit, a voltage regulating key, a voltage measuring and controlling circuit and a display circuit, wherein the input terminal of the sampling circuit is connected with the output terminal of the DC / DC converting and regulating circuit, the output terminal for feedbacking the output voltage of the sampling circuit is connected with the input terminal of an A / D convertor circuit of the power supply measuring and controlling circuit, the output terminal of the A / D convertor circuit is connected with the input terminal of a microprocessor controlling circuit of the power supply measuring and controlling circuit, the output terminal of the microprocessor controlling circuit is connected with the input terminal of a D / A convertor circuit, the output terminal of the D / A converter circuit is connected with the DC / DC converting and regulating circuit, the output terminal of the microprocessor controlling circuit is connected with the display circuit, and the voltage regulating key is connected with the microprocessor controlling circuit.

Description

technical field [0001] The invention relates to a power adapter device for electronic equipment, in particular to a vehicle-mounted universal power adapter capable of adapting to various portable electronic equipment and having intelligently adjustable output voltage. Background technique [0002] At present, cars are generally equipped with a standard DC 12V voltage output socket, and some regions such as the European Union plan to adopt a 48V voltage standard. If you need to charge or supply power to electrical appliances in the car, the general way is to equip an inverter (inverter). The function of the inverter is to convert DC 12V / 48V to AC 110V / 220V. When the car needs to be charged or powered, the 110V / 220V is converted into the corresponding DC voltage. This has gone through a process of converting DC to AC, and then converting AC to DC. The disadvantages are large losses and low conversion efficiency, resulting in a great waste of resources. [0003] For the power...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a 12V / 48V battery that does not require an inverter and can directly fix the car to solve the problems of large losses, low conversion efficiency, and great waste of resources in the existing vehicle charging or power supply methods. The voltage is converted into an adjustable output voltage to meet the needs of different electrical appliances, and the power conversion efficiency is higher, more energy-saving, and more environmentally friendly. Car universal power adapter

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