Storage and charging system based on AC / DC hybrid bus architecture and its working method

Through the storage and charging system based on AC-DC hybrid busbar architecture, the impact of electric vehicle charging on the power grid and grid failure problems are solved, the efficient utilization of new energy power generation and the charging demand of electric vehicles are achieved, and equipment costs and energy losses are reduced.

CN118944165BActive Publication Date: 2025-01-07国网(山东)电动汽车服务有限公司
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Patent Information

Application Number
CN202411433994.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-10-15
Publication Date
2025-01-07
Estimated Expiration
2044-10-15

AI Technical Summary

Technical Problem

The charging behavior of electric vehicles has an adverse impact on the power grid, and the electric vehicles cannot be charged when the power grid fails, which limits the use of electric vehicles, and the storage and charging system cannot efficiently utilize new energy to generate electricity.

Method used

The storage and charging system based on AC-DC hybrid busbar architecture is adopted, and the two switches in the grid-connected module are controlled through the energy management module, and the electric energy storage module, AC-DC conversion module and DC charger module are used to charge to match the charging needs of new energy vehicles. , realize charging at any time, and charge new energy vehicles when power outages are made in the power grid.

Benefits of technology

It realizes efficient utilization of new energy power generation, solves the charging problem during power outages in the power grid, reduces the load in the station area, reduces equipment costs, and avoids energy losses caused by AC and DC conversion.

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Abstract

The embodiments of the present disclosure provide a storage and charging system based on an AC / DC hybrid busbar architecture and a working method thereof; they relate to the field of photovoltaic storage and charging technology. The method includes a DC charger module obtaining charging requirements and transmitting them to an energy management module; the energy management module receives the charging requirements and controls the power storage module or the AC / DC conversion module to charge the DC charger module by controlling the switch of the grid-connected module according to the photovoltaic power generation situation and the storage and charging system parameters; the AC / DC conversion module obtains the power characteristic value of the DCDC power module in the DC charger module and matches the charging power requirement; the DCDC power module converts the input side DC voltage into a DC voltage that meets the charging requirements according to the matched power characteristic value. The system has a compact structure and strong heat dissipation capability, can efficiently utilize new energy for power generation, solves problems such as photovoltaic nearby consumption, heavy load in the substation area, reverse heavy overload in the substation area, three-phase imbalance, overvoltage and peak-valley load difference of the power grid, and avoids energy loss caused by AC / DC conversion.
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