Intelligent power distribution method for multi-port quick charger

A technology of fast charging and intelligent power, which is applied in current collectors, different battery charging, electric vehicles, etc. It can solve the problems of charging power changes, inability to achieve power distribution combination, low efficiency, etc., and achieve the effect of free distribution of output power

Pending Publication Date: 2022-02-25
闪极科技(深圳)有限公司
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  • Claims
  • Application Information

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 distribut

Method used

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  • Intelligent power distribution method for multi-port quick charger
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Embodiment Construction

[0024] Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

[0025] The invention provides an intelligent power distribution and indication method for a multi-port fast charger, such as figure 1 As shown (for the sake of simplicity, the DC-DC circuit controlled by the PD MCU has been omitted), it is assumed that the maximum power available for distribution of the AC-DC output of the fast charger front stage is P max , there are n output ports, and the n output ports are all connected to the device to be charged. At a certain moment t, the power of each output port is n MCUs (microcontrollers) with built-in PD controllers pass through the communication bus (Communication Bus, which can be I 2 C, CAN, SPI or 1-Wire and other bus interfaces) communicate with each other, dynamically adjust the output power of n ports, and do not need an additional MCU for star control.

[002...

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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...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04
CPCH02J7/00032H02J7/00712H02J7/0047H02J7/04
Inventor 周万程张波陈攀
Owner 闪极科技(深圳)有限公司
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