Modularization multiport type electric car quick charging station based on high-frequency isolation technology

A high-frequency isolation, electric vehicle technology, applied in electric vehicles, battery circuit devices, current collectors, etc., can solve the problem of difficult direct access to new energy power generation systems, low system integration, and large footprint of charging stations. problems, to achieve the effect of small footprint, convenient DC grid connection, and low power grid harmonic pollution

Inactive Publication Date: 2014-05-14
NORTHEAST DIANLI UNIVERSITY
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  • Abstract
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  • Claims
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Problems solved by technology

[0005] At this stage, there are mainly the following problems in the fast charging station for electric vehicles: 1. The charging station occupies a large area; 2. The conversion efficiency of the system is low; 3. High harmonic pollution of the power grid; low level of integration

Method used

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  • Modularization multiport type electric car quick charging station based on high-frequency isolation technology
  • Modularization multiport type electric car quick charging station based on high-frequency isolation technology
  • Modularization multiport type electric car quick charging station based on high-frequency isolation technology

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Embodiment Construction

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and examples.

[0016] refer to figure 2 , the modularized multi-port fast charging station for electric vehicles based on high-frequency isolation technology of the present invention includes: 10kV / 0.38kV step-down transformer commonly used in the prior art: it is the urban 10kV power distribution station that provides electric energy for the fast charging device for electric vehicles Network, the function of the traditional step-down transformer is to reduce the voltage to 380V to provide electric energy for the electric vehicle fast charging station; AC 0.38kV / 0.38kV isolation transformer: the output AC 380V voltage is then processed by a 0.38kV / 0.38kV isolation transformer Isolation transformation, the main function of the isolation transformer is to completely insulate the primary side and the secondary side, and also to isolate the circuit, so that the DC...

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Abstract

The invention relates to a modularization multiport type electric car quick charging station based on a high-frequency isolation technology. The modularization multiport type electric car quick charging station is characterized by comprising a 10 kV / 0.38 kV alternating-current transformer, a 0.38 kV / 0.38 kV isolation type transformer, a modularization rectifying device, a high-frequency isolation direct-current transformer, a DC-DC converter, a new energy power generation system, an energy storage system and a background monitoring and intelligent managing system which carries out real-time monitoring. The charging station has the advantages of being small in occupied space, high in system converting efficiency, low in power grid harmonic pollution and safe, convenient and quick to use, new energy system direct current grid connection is convenient, and the system integration degree is high.

Description

technical field [0001] The invention belongs to the field of fast charging infrastructure for electric vehicles, and is a modular multi-port fast charging station for electric vehicles based on high-frequency isolation technology. Background technique [0002] There are three main charging methods for electric vehicles at present, which are slow charging mode, fast charging mode, and battery replacement mode. The reasonable layout and mutual cooperation of the three charging modes can better improve the penetration rate of electric vehicles. [0003] Therefore, fast charging devices for electric vehicles are also an irreplaceable part of the electric vehicle industry chain. [0004] Currently, if figure 1 As shown, the system structure adopted by the existing fast charging stations for electric vehicles is mostly one-to-one charging mode, with an output power of about 50kW, which can fully charge 80% of the battery capacity of electric vehicles within 15 minutes to 30 minu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/02
Inventor 刘闯蔡国伟赵贺雍
Owner NORTHEAST DIANLI UNIVERSITY
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