Multi-port efficient intelligent rapid charger

Abstract

The invention discloses a multi-port efficient intelligent quick charger, relates to the technical field of quick charging, and solves the technical problems that power distribution cannot be effectively carried out on different electric devices and the efficiency is relatively low, and the key points of the technical scheme are as follows: charging voltages requested by the electric devices and the number of the electric devices are obtained through an MCU (Microprogrammed Control Unit); therefore, the real-time intelligent distribution of the output power is realized, and multiple ports can be charged at the same time in the use scene of various electric devices. And meanwhile, flyback output voltage, the step-down circuit and the PMOS tube are controlled, so that the efficiency of the whole circuit can be improved. On the basis of the scheme, the cost of the BUCK circuit can be effectively reduced, the utilization efficiency of electric energy is improved, and the purposes of better and faster charging, certain economic benefits, low carbon and environmental protection are achieved.

Description

technical field [0001] The present application relates to the technical field of fast charging, in particular to a multi-port high-efficiency intelligent fast charger. Background technique [0002] Previous chargers charge at a voltage of 5V, and the current is below 2A. With the increase of mobile phone battery capacity, the low-power charging speed can no longer meet the growing demand for fast charging. Fast charging is to increase the charging power, either to increase the charging voltage or to increase the charging current, and the major mobile phone manufacturers and mobile phone chip manufacturers have their own fast charging protocols, and they are different, but they are slowly becoming compatible with each other. -Power Delivery (USB-PD) is one of the current mainstream fast charging protocols. [0003] Nowadays, there are more and more smart devices that need to be charged in daily life. Smart devices such as smartphones, laptops, and tablets, as well as power t...

AI Technical Summary

Problems solved by technology

[0005] Most of the existing multi-port charging devices with a power of 30W and below do not have the fast charging function when charging multiple ports at the same time

However, multi-port fast charging devices with power levels of 45W and 65W and above cannot allocate power to different electrical devices when charging multiple ports at the same time, but only reduce power. Although fast charging can still be performed, it cannot be charged according to the Intelligently adjust the output power according to the needs of the equipment, and optimize any combination of multiple ports for fast charging at the same time, so that the charging equipment cannot exert the maximum charging capacity and obtain a good enough charging experience

[0006] For a charging device that is not greater than 65W and can charge multiple ports at the same time, it generally needs to go through two-stage power conversion, that is, a flyback circuit and a step-down circuit, and the conversion of electric energy will cause a certain loss, and the efficiency of the two-stage conversion is relatively low. , resulting in a waste of electric energy

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