Fast-charging station system

A charging station and power station technology, applied in charging stations, electric vehicle charging technology, current collectors, etc., can solve the problems of inconvenient daily use, long charging process, and difficulty in popularizing electric vehicles, and achieve low energy storage cost and reliability. High and easy maintenance effect

Inactive Publication Date: 2019-01-22
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the establishment of an electric vehicle charging station network is not easy to achieve in the short term. The main reason is that fast charging of electric vehicles requires instantaneous and powerful power, which cannot be met by conventional power grids. A dedicated charging network must be built, which involves the transformation of the entire national power grid. It cannot be achieved overnight. If electric vehicles do not carry out high-power fast charging, the charging process

Method used

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  • Fast-charging station system

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Embodiment

[0026] Such as figure 1 Shown is a schematic diagram of the system structure of a fast charging station system of the present invention, including an energy management unit 1: connected to each branch of the grid power supply module and the expandable energy storage module, and used to independently send instructions to each control branch, Control the energy exchange process between the system and the power grid and the charging and discharging process of each battery pack; several parallel power battery packs 2: including the battery packs that are decommissioned and reused and the battery packs that are idle after the electric vehicle is replaced The input end of the DC voltage converter 3 is connected; the DC / DC voltage converter 3 is a bidirectional DC / DC voltage converter: connected to the fast charging pile 5 and connected in parallel with the grid power supply module, the output boost is completed when the battery is discharged, and the battery is charged The input ste...

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Abstract

The invention relates to a fast charging station system. The system structure of the fast charging station comprises: an expandable energy storage module comprising a plurality of parallel power battery packs and respective bidirectional DC voltage conversion circuits, which are connected with the fast charging piles, and each branch is independently controlled by a management unit. The power supply module comprises an AC/DC voltage conversion circuit and a three-phase four-wire alternating current input connected in parallel with the expandable energy storage module. The fast charging pile isconnected with the energy storage power supply module and transmits power to the battery to be charged through the charging joint. The energy management unit is connected with the expandable energy storage module and the grid power supply module, and sends commands to each control circuit. Compared with the prior art, the invention has the advantages of saving cost, high working efficiency, flexible configuration, environmental protection and the like.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a fast charging station system. Background technique [0002] As a new type of transportation that has developed rapidly in recent years, electric vehicles have the advantages of environmental protection, low cost of use, and easy maintenance. Under the circumstances that the pressure on environmental protection in Chinese cities has reached extremes, the promotion of electric vehicles has become an undisputed issue. national industry orientation. As the tram technology matures, the development of its supporting electric vehicle charging stations has become inevitable. [0003] However, the establishment of an electric vehicle charging station network is not easy to achieve in the short term. The main reason is that fast charging of electric vehicles requires instantaneous and powerful power, which cannot be met by conventional power grids. A dedicated charging network must be ...

Claims

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Application Information

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IPC IPC(8): B60L53/64B60L55/00B60L53/80
CPCB60L2210/10B60L2210/30Y02T10/70Y02T10/7072Y02T10/72Y02T90/12
Inventor 魏学哲戴海峰王学远李司达
Owner TONGJI UNIV
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