Portable power supply capable of detecting currency

Abstract

The invention discloses a portable power supply capable of detecting currency and relates to a portable power supply. The portable power supply is provided with an USB (universal serial bus) input interface, an adapter, a charging circuit, a lithium battery cell, a microprocessor, a DC / DC (direct current) boosted circuit, a 5V output circuit, a voltage sampling circuit, a voltage amplifier circuit, an electric quantity display circuit, a currency-detecting circuit and a lithium battery cell overcharging and over-discharging protection circuit; the input end of the charging circuit is respectively connected with the USB input interface and the output end of the adapter, the output end of the charging circuit is respectively connected with the lithium battery cell and the input end of the boosted circuit, the 5V charging voltage output end of the boosted circuit is connected with the input end of the 5V output circuit, the input end of the voltage sampling circuit is connected with the output end of the 5V output circuit, the output end of the voltage sampling circuit is connected with the microprocessor and the voltage amplifier circuit, the output port of the microprocessor is connected with the charging circuit, the boosted circuit and the electric quantity display circuit, the output end of the voltage amplifier circuit is connected with the boosted circuit and the output end of the currency-detecting circuit is connected with the microprocessor; the lithium battery cell overcharging and over-discharging protection circuit is connected with the lithium battery cell.

Description

technical field [0001] The invention relates to a mobile power supply, in particular to a money-verifying mobile power supply. Background technique [0002] Mobile power is a portable charger that integrates power supply and charging functions, which can charge mobile phones and other digital devices anytime, anywhere or standby power. Generally equipped with a variety of power adapters, usually with the characteristics of large capacity, multi-purpose, small size, long life, safety and reliability, etc., it can be used for mobile phones, digital cameras, notebooks, tablet computers, MP3, MP4, PDA, handheld computers Functional products for power supply or standby charging of various digital products such as handheld game consoles. At present, the quality of most mobile power products on the market mainly depends on the energy conversion rate and discharge curve. The conversion efficiency of high-quality mobile power can reach about 80%, while that of ordinary power banks i...

AI Technical Summary

Problems solved by technology

At present, the quality of most mobile power products on the market mainly depends on the energy conversion rate and discharge curve. The conversion efficiency of high-quality mobile power can reach about 80%, while that of ordinary power banks is 70% to 75%, and the poor ones are even only 30%. If the conversion rate is lower than 75%, it means that the loss of the mobile power line is large, the heat of the battery itself is also large, and the damage to the mobile phone itself is also great.

However, most of the mobile power products on the market have a single function and only provide charging services for consumers

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