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A DC fast dual charging system and control method for dynamic power allocation

A technology of dynamic allocation and control method, applied in charging stations for charging mobile devices, electric vehicles, and arrangement of multiple synchronous batteries, etc. The effect of maximized efficiency utilization, low switching frequency and long system life

Active Publication Date: 2017-12-05
XJ ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The charging time is long, and charging needs to be waited in line, which cannot meet the requirements of customers for fast charging, resulting in the slow popularization of the electric vehicle industry

Method used

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  • A DC fast dual charging system and control method for dynamic power allocation
  • A DC fast dual charging system and control method for dynamic power allocation
  • A DC fast dual charging system and control method for dynamic power allocation

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Embodiment Construction

[0020] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0021] Such as figure 1 Shown is the principle diagram of the DC fast dual charging system with dynamic power distribution of the present invention. It can be seen from the figure that the system includes a power supply unit composed of a group of AD / DC converters for connecting to the power grid and a power supply unit for connecting to the vehicle to be charged. Two charging piles are connected, the power supply unit is connected to the two charging piles through the ATS switching unit to realize that each AD / DC converter is only conductively connected to one charging pile at the same time, the power supply unit, the ATS switching unit and the two charging piles Both communicate with the monitoring unit.

[0022] The ATS switching unit of this embodiment is composed of a group of switching switches corresponding to the AD / DC converters of t...

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PUM

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Abstract

The invention discloses a direct-current fast double-charging system and control method with power dynamically distributed. A set of AC / DC converters is utilized for converting three-phase alternating currents into direct-current voltages and outputs the direct-current voltages to be connected with two charging points. The aim of charging two automobiles at the same time is achieved, direct-current fast charging of the electric automobiles is achieved, the power can be dynamically distributed, and the system and method have the function of well promoting the development of the electric automobile industry. In addition, in the charging process, the control mode of positive-sequence input and inverted-sequence cutaway is adopted in one charging point, the control mode of inverted-sequence input and positive-sequence cutaway is adopted in the other charging point, the same set of ATS switching units is adopted in the two charging points, and the effects that the power unit power utilization is maximized, switching frequency is low, and the service life of the system is long are achieved.

Description

technical field [0001] The invention belongs to the field of electric vehicle charging, and in particular relates to a DC fast double charging system and a control method for dynamic power distribution. Background technique [0002] Facing the increasingly urgent energy crisis, the development of electric vehicles has become an important development strategy of the country. In the development of electric vehicles, the construction of charging facilities is extremely important, and the charging speed restricts the development of electric vehicles. With the continuous improvement of battery capacity and technology, the requirements for the charging current of the charging system are also increasing. At present, there is a fast-charging dual-charging product in the market, but this type of product can only charge one vehicle, not a real dual-charging system, and the charging current is relatively small, which cannot improve the efficiency of the charging system. [0003] In o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/02H02J7/04
CPCH01M10/441H02J7/0019H02J7/0027H02J7/02Y02E60/10
Inventor 于文斌李彩生单栋梁刘向立董新生贾耀云孟凡提乔海强李子久吴效威齐晓祥凌凯王聪慧
Owner XJ ELECTRIC
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