Two-way converter station charge-discharge system

A technology for charging and discharging and changing stations, applied in the field of changing stations, can solve problems such as low reliability, fixed and unchangeable inverter power, complex circuits of bidirectional charging systems, etc., and achieve the goals of improving utilization, increasing charging and discharging speed, and saving investment Effect

Inactive Publication Date: 2013-03-20
JIANGSU JIAYU NEW POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a new two-way power station charging and discharging system to solve the problems of the existing two-way charging system, such as complex circuit, fixed and unchangeable inverter power, and low reliability. Inverter system and automatic switching control module

Method used

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  • Two-way converter station charge-discharge system

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Embodiment Construction

[0014] Such as image 3 As shown, the system of the present invention has K AC / DC rectifier modules or module groups, and K is greater than 1, that is, there are more than two AC / DC rectifier modules or module groups, corresponding to charging K battery boxes, and each battery box is equipped with There is a corresponding battery management system BMS, and the main control communication unit is respectively connected to each AC / DC rectifier module or module group and each battery management system BMS. The entire charging process is controlled through the communication control between the main control communication unit and each module group. At the same time, it is equipped with one inverter module or inverter module group. When the inverter module group is used, the redundant design can be realized to improve the reliability of the inverter group. The DC input port of the inverter module or inverter module group passes through A group of switches is connected to the positiv...

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Abstract

The invention discloses a two-way converter station charge-discharge system used for charging and discharging of an electric vehicle. The system comprises K AC / DC rectifier modules or module groups used for charging K battery boxes correspondingly, and further comprises one inverter module or inverter module group, wherein K is larger than 1; a DC input port of the inverter module or inverter module group is connected with the positive electrodes and the negative electrodes of the battery boxes corresponding to a group of switches through the group of switches; each battery box is provided with a corresponding batter management system; a main control communication unit is respectively connected with all the AC / DC rectifier modules or module groups and all the battery management systems; during charging, all the switches are off, and when a certain battery box discharges, a corresponding switch is on; and charging and discharging can be controlled through the switches, so that investment is saved and charge-discharge speed and utilization rate of the whole system are improved.

Description

technical field [0001] The invention relates to a power station for charging and discharging electric vehicles, in particular to a charging and discharging system for the power station. Background technique [0002] At present, the electric vehicle industry is on the rise, and the electric vehicle chargers equipped with it are also developed. Since electric vehicles need to use batteries (or supercapacitors) for charging or changing batteries, batteries (or supercapacitors) are a very good Energy storage devices, and the power consumption of the power grid varies with the production time. The power consumption is large during the day, and the power grid is overloaded, while the power consumption is very small at night, resulting in idle power generation and transmission facilities. To avoid this Due to the negative impact of the phenomenon on the power grid, many local power grid companies have implemented different electricity prices for peak and valley. With the popula...

Claims

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Application Information

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IPC IPC(8): H02J7/02H02J7/00
Inventor 吴连日
Owner JIANGSU JIAYU NEW POWER TECH
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