Multifunctional carry-on power supply

Abstract

The invention provides a multifunctional portable power supply, comprising a li-ion battery pack which can be charged or discharged and connected in parallel. The li-ion battery pack is sequentially connected with a li-core fourfold protection circuit and a charging management circuit through leads; meanwhile, the li-ion battery pack are connected with a battery capacity indicating circuit through the leads; when being charged, the li-ion battery pack which is connected with the li-core fourfold protection circuit is charged by connecting an adaptive charger with the charging management circuit; when being discharged, the li-ion battery pack discharges for external electronic equipments through a DC-DC conversion circuit and provides power for a multifunctional extension circuit through the DC-DC conversion circuit. The multifunctional potable power supply which is provided with the invention has fourfold protection techniques (overcharging, over-discharging, over-heating and over-current protection), DC-DC conversion technique (DC-DC conversion), management of intelligent charging (four-stage charging method such as tiny current charging, constant current charging, constant voltage charging, maintaining charging, etc.), and multifunctional extensions (highlighted illuminance, outdoor alarming and field mosquito repelling effect).

Description

【Technical field】: [0001] The invention belongs to the technical field of rechargeable power sources, in particular to a device for charging lithium batteries and for supplying power to mobile phones and MP3s from lithium batteries, in particular to a device with illuminating lamps, alarms and mosquito repellents Multifunctional portable power supply. 【Background technique】: [0002] Nowadays, there are more and more mobile electronic devices in the market, but the power supply capacity and power consumption of the devices are far from meeting the requirements of the market, which causes a lot of inconvenience to daily life, especially outdoor life. For this reason, it will be of great practical value to make a portable power supply with multiple functions, high efficiency, low consumption and safety to meet outdoor needs. [0003] Lithium-ion batteries have the advantages of small size, light weight, high specific energy, long life, and fast charging. Compared with other ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of shortening the service life of the lithium ion battery and increasing the risk of use due to the relatively simple charging protection circuit of the existing lithium ion battery, and to provide a portable battery with multiple protection technologies, intelligent charging management and multiple functions. power supply

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