Nowadays, people are more and more like outdoor play, and outdoor portable power supply can contribute to our outdoor play, to provide more convenient electricity demand, so how to choose a safe, efficient, light, in line with the requirements of the portable power supply? This paper on the following points to make the composition of the portable power supply brief analysis!

1.Lithium battery

    Lithium battery as the main body of energy storage, is the "heart" of portable power supply, buy a portable power supply, the quality of its built-in lithium battery directly affects the safety, life; and lithium battery can be divided into digital and power type cell, digital type is some small electronic equipment cell, such as mobile phone, charge treasure, wireless headphones, the discharge does not need too much current, so only applied to small digital equipment; power type electric cell as the name implies its discharge needs to support a large discharge current, to ensure output demand, so relative to digital type cell, the price will be more expensive.

2. Inverter

    Inverter as the DC into AC module (DC-AC), we can power output AC220V is all by it, the quality of the inverter material determines the quality of the product, better manufacturers will use imported MOS-FET and IGBT as the inverter drive circuit, impact resistance, high temperature resistance, current resistance is the biggest advantage.

3.The BMS (Battery Management System) power management system

    If lithium battery is the heart of outdoor portable power supply, BMS is the brain of outdoor portable power supply, which is responsible for the scheduling of the whole power system, has the protection functions of overcharge, over discharge, over temperature, under pressure, short circuit, and the safety mark, so the quality of BMS system determines the safety of the product!