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Power conversion method and system for multi-modular electric vehicle charging station

A technology for electric vehicles and power conversion, applied in electric vehicle charging technology, electric vehicles, charging stations, etc.

Pending Publication Date: 2021-05-18
武汉经开科创运营有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the country's vigorous promotion of electric vehicles, related electric vehicle charging service facilities are also actively under construction. At present, the charging system must adopt a high-voltage power supply method, because charging stations are oriented to public services, and are affected by the number of electric vehicles, battery capacity and Influenced by factors such as charging voltage and current, the total capacity of the system may reach the megaampere level or above

Method used

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  • Power conversion method and system for multi-modular electric vehicle charging station
  • Power conversion method and system for multi-modular electric vehicle charging station
  • Power conversion method and system for multi-modular electric vehicle charging station

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Embodiment Construction

[0027] In order to further understand the invention content, characteristics and effects of the present invention, the following embodiments are listed below, and detailed descriptions are as follows in conjunction with the accompanying drawings.

[0028] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0029] The technical solutions and beneficial effects of the present invention will be clearer and more definite by further describing the specific implementation manners of the present invention in conjunction with the accompanying drawings of the specification below. The embodiments described below by referring to the figures are exemplary for the purpose of explaining the present invention and should not be construed as limiting the present invention.

[0030] Such as figure 1 As shown, a structural diagram of a multi-modular electric vehicle charging station power conversion method is composed of a th...

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Abstract

The invention discloses a power conversion method and system for a multi-modular electric vehicle charging station. The method comprises the steps that 10 KV high-voltage alternating current introduced from a power grid side passes through a three-phase rectifier module and then is conveyed to a multi-modular charging station, and finally an electric vehicle is charged through a charging gun. The system comprises: a rectifier module used for converting high-voltage alternating current into direct current; and a current conversion module which is used for converting the direct current obtained by conversion of the rectifier module into direct current meeting the charging standard of the electric vehicle. Compared with a traditional 10KV automobile charging station power conversion system, a 10KV / 380V transformer is omitted; 10KV alternating current is directly converted into direct current, the voltage stress of a switch tube is reduced, and harmonic pollution is reduced; transmission is achieved through thin cables, materials are saved, and cost is reduced; and the voltage level of each converter can be reduced to kilovolt level or even lower, so that the switching frequency reaches a higher level, and the power density is further improved.

Description

technical field [0001] The invention relates to the field of electric vehicle charging, in particular to a method and system for power conversion of a multi-modular electric vehicle charging station. Background technique [0002] With the country's vigorous promotion of electric vehicles, related electric vehicle charging service facilities are also actively under construction. At present, the charging system must adopt a high-voltage power supply method, because charging stations are oriented to public services, and are affected by the number of electric vehicles, battery capacity and Influenced by charging voltage, current and other factors, the total capacity of the system may reach above megaampere level. At present, the construction of 10KV vehicle charging stations in my country is in the stage of rapid development. The 10KV vehicle charging stations that have been built and put into operation can provide all-weather charging services for electric cars, minibuses, and ...

Claims

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Application Information

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IPC IPC(8): H02M3/335B60L53/00
CPCH02M3/33576B60L53/00B60L2210/40Y02T10/70Y02T10/72Y02T10/7072Y02T90/14
Inventor 王伟黄亮卢炽华袁守利王海雄徐爱华
Owner 武汉经开科创运营有限公司
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