High-voltage charging control system and a control method based on AFE

Abstract

The invention belongs to the field of high-voltage charging, and discloses a high-voltage charging control system and a control method based on AFE. The control system is provided with a BMS system, the BMS system is connected with a driving module, an input current detection module, an AFE module, a protection module and an output current detection module. The BMS system is connected with the operating system and controlled by the operating system. The driving module is connected with an alternating current input module, other current input modules and alternating current input modules, othercurrent input modules are detected by the input current detection module, the AFE module is connected with a protection module, the protection module is connected with the current output module, andthe current output module is detected by the output current detection module. The invention has the characteristics of large rate, long service life, high efficiency, low cost and low failure rate, improves the stability and safety of charging of new energy vehicles, greatly reduces the comprehensive cost of charging of new energy vehicles, and increases the economic benefit of charging stations of new energy vehicles.

Description

technical field [0001] The invention belongs to the field of high-voltage charging, and in particular relates to an AFE-based high-voltage charging control system and control method. Background technique [0002] DC charging piles, commonly known as "fast charging", as the name suggests, can quickly charge electric vehicles. DC charging piles are divided into two types: integrated DC charging piles and split-type DC charging piles. At present, MOSFET modules occupy a leading position in the market in these two types of structures, but there are the following problems in high-voltage control: low conversion efficiency of modules, The module life is limited, the module failure rate is high, and the security is insufficient. [0003] In summary, the problems in the prior art are: [0004] In the existing technology, the module conversion efficiency is low, the module life is limited, the module failure rate is high, and the safety is insufficient. [0005] There are also low...

AI Technical Summary

Problems solved by technology

DC charging piles are divided into two types: integrated DC charging piles and split-type DC charging piles. At present, MOSFET modules occupy a dominant position in the market in these two types of structures, but there are the following problems in high-voltage control: low conversion efficiency of modules, Limited module life, high module failure rate, and insufficient security

[0004] In the existing technology, the module conversion efficiency is low, the module life is limited, the module failure rate is high, and the safety is insufficient

[0005] There are also low power factor of the power grid and high pollution of the power grid;

[0006] The stability and safety of charging new energy vehicles are poor

Images