Intelligent power distribution method for multi-port quick charger

Abstract

The invention provides an intelligent power distribution method for a multi-port quick charger. The method comprises the steps that the maximum power Pmax which can be distributed and is output by a preceding stage AC-DC of the multi-port quick charger and the number n of output ports are included, the multi-port quick charger comprises n MCUs with built-in PD controllers, the MCUs communicate with one another through communication buses, the output power of the n output ports is dynamically adjusted according to the following mode that when a new charging device i to be charged is connected to the output port i, the MCU corresponding to the output port i provides the actual output power Pii to the output port i according to the distributable power Pmax-sigma Pout and the charging requirement of the charging device i, and sigma Pout is the distributed output power. According to the invention, free distribution of output power of each port of the multi-port quick charger can be realized based on real-time multi-port charging power requirements according to mainstream quick charging protocol standards.

Description

technical field [0001] The invention relates to the field of multi-interface fast chargers, in particular to an intelligent power distribution method for a multi-port fast charger. Background technique [0002] With the rapid development of fast charging technology and power devices, fast charging products with small size, multiple ports, and supporting multiple fast charging protocols are popular. Therefore, the output power distribution of multiple ports supporting fast charging protocols has become a rigid demand. The distribution of output power is closely related to factors such as the power required by the charged device and the total output power of the front stage. How to adjust in real time between the required power of the charged device and the power limit of the charging device itself and other factors (such as temperature) , Equilibrium is an urgent problem to be solved. The current technical solutions are all implemented based on a fixed power allocation table...

AI Technical Summary

Problems solved by technology

[0003] The multi-port fast charger in the prior art distributes the multi-port output power according to the fixed power distribution table, therefore, free power distribution cannot be achieved

For example, a dual-port fast charger with a maximum output power of 120W, according to the fast charging protocol PD3. The power distribution combination (such as 90W+30W, 100W+20W, etc.), the efficiency of charging multiple devices is relatively low. In addition, the charging power of most smart devices with batteries changes (generally speaking, it will increase with the increase of its own power. High or temperature increases and reduce the required charging power)

Images