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Light-storage type EV (electric vehicle) charging and converting station

A technology for electric vehicles and charging and swapping stations, applied in electric vehicles, photovoltaic power generation, battery circuit devices, etc., can solve problems such as increased burden, no battery pack, and inability to charge electric vehicles, and achieve the effect of alleviating the tension in the power grid

Active Publication Date: 2012-02-15
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing electric vehicle charging and swapping stations use the AC grid as the power supply source: 1. Due to the shortage of resources of the national grid, it will increase the burden on the country to completely rely on the national grid; 2. At present, the electric vehicle charging station Most of them are not equipped with battery packs, and cannot charge electric vehicles when the power grid is out of power. Although the electric vehicle swap station is equipped with a large number of battery packs, it can meet a certain degree of demand for battery swapping of electric vehicles when the grid is out of power. When there is a power outage, it will not be able to meet the needs of electric vehicles for battery replacement

Method used

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  • Light-storage type EV (electric vehicle) charging and converting station

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specific Embodiment approach 1

[0027] Specific implementation mode one: the following combination Figures 1 to 11 Describe this embodiment, the light-storage type electric vehicle charging and swapping station described in this embodiment includes a photovoltaic power generation system, a battery energy storage system, an electric vehicle charging station 6, a station load 7, a main circuit breaker 8, and a photovoltaic system connected to the grid Circuit breaker 9, load circuit breaker 10, photovoltaic access circuit breaker 11, solar cell module circuit breaker 12 and battery pack circuit breaker 13,

[0028] The photovoltaic power generation system includes a solar cell assembly 1, a grid-connected inverter 2, and a photovoltaic power supply management system 14. The output end of the photovoltaic power supply management system 14 is connected to the control end of the solar cell assembly 1, and the DC output end of the solar cell assembly 1 It is connected to the DC input terminal of the grid-connecte...

specific Embodiment approach 2

[0049] Specific embodiment 2: This embodiment further explains Embodiment 1. It also includes a monitoring system 15, which is connected to the load power supply bus. The monitoring system 15 includes a power supply monitoring system, a charging monitoring system, and a power quality monitoring system. Surveillance systems and video surveillance systems,

[0050] The power supply monitoring system is used to monitor the operation of the power supply system, including displaying the main wiring of the power supply system, detecting electrical quantities such as power, electricity and current, and the power supply system includes a photovoltaic power generation system and an AC power grid;

[0051] The charging monitoring system monitors the charging information, charging status, and charging settlement of the battery of the electric vehicle;

[0052] The power quality monitoring system is used to monitor the power quality, monitor the total current distortion rate, the total vo...

specific Embodiment approach 3

[0055] Specific implementation mode three: the following combination image 3 Describe this embodiment, this embodiment further explains Embodiment 1, the battery management system 4 uses the temperature sensor to collect the temperature signal of the battery pack 3, and uses the Hall sensor to collect the current signal and voltage signal of the battery pack 3; The remaining power of the battery pack 3, when the voltage of the battery pack 3 is too low or too high, or the temperature is too high, an alarm is given; the battery management system 4 balances the energy of the battery pack 3 to ensure that each single battery in the battery pack 3 Consistency of electric quantity; the battery management system 4 sends the information of the battery pack 3 to the photovoltaic power supply management system 14 through the 485 bus or the CAN bus.

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Abstract

The invention provides a light-storage type EV (electric vehicle) charging and converting station, belonging to the field of power supply systems. The station is used for solving the problems caused by taking an alternating current power grid as a power supply source in the existing EV charging and converting station. The light-storage type EV charging and converting station comprises a photovoltaic generating system, a storage battery energy accumulation system, an EV charging station and a station-used load, wherein the photovoltaic generating system comprises a solar battery assembly, a grid connected inverter and a photovoltaic power supply management system, and is suspended on a power supply bus of the photovoltaic system; the storage battery energy accumulation system comprises a storage battery pack, a battery management system and a dual-direction inverter, and is suspended on a power supply bus of the load; the EV charging and converting station and the station-used load are suspended on the power supply load of the load; and the power supply bus of the photovoltaic system and the power supply bus of the load are respectively connected with a 380V bus in the alternating current power grid, and are connected by a photovoltaic access breaker.

Description

technical field [0001] The invention relates to a light-storage electric vehicle charging and swapping station, belonging to the field of power supply systems. Background technique [0002] At present, the United States, Japan, Israel, France, the United Kingdom and other countries have begun to build their own electric vehicle charging facilities, mainly for charging. Among them, the United States and Israel are carrying out related work on power station replacement. In 2010, the State Grid Corporation of China put forward the principle of "battery replacement, supplemented by plug-in charging, centralized charging, and unified distribution" for the charging mode of electric vehicles. In 2011, the State Grid Corporation of China built my country's first electric vehicle intelligent charging and swapping service network in Zhejiang, and it is also the world's first electric vehicle intelligent charging and swapping service network that realizes intercity interconnection. Chi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/35H02J3/32
CPCY02E10/56Y02E70/30
Inventor 徐冰亮董尔佳武国良徐明宇陈晓光穆兴华
Owner STATE GRID CORP OF CHINA
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