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Electric vehicle charging system with multiple charging modes and charging method

An electric vehicle and charging mode technology, applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problem of inability to meet the high-power charging requirements or fast charging requirements of electric vehicles, and achieve the effect of meeting the fast charging requirements.

Inactive Publication Date: 2019-11-26
HARBIN UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the high-power charging demand or fast charging demand of electric vehicles cannot be met due to the limitation of the voltage conversion device in the existing battery charging station, and proposes an electric vehicle charging system with multiple charging modes and charging method

Method used

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  • Electric vehicle charging system with multiple charging modes and charging method

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specific Embodiment approach 1

[0020] Specific implementation mode one: the following combination figure 1 This embodiment is described. A different electric vehicle charging system with multiple charging modes described in this embodiment, the system includes an expansion structure 1, a main controller 2, a main AC / DC converter 3, an electric vehicle charging port 4 and Three switches S 1 , S 2 and S 3 ;

[0021] The electric vehicle charging port 4 is used to provide a charging port for the electric vehicle battery, collect or set the required power for charging the electric vehicle at the same time, and send the collected or set required power for charging the electric vehicle battery to the main controller 2;

[0022] The electric vehicle charging port 4 is also provided with a load detection terminal, and when no load connection is detected, a load unconnected signal is sent to the main controller 2;

[0023] The main controller 2 is used to receive the electric vehicle battery charging demand powe...

specific Embodiment approach 2

[0036] Embodiment 2: A charging method for an electric vehicle charging system with multiple charging modes described in this embodiment, which is based on the electric vehicle charging system with multiple charging modes described in Embodiment 1 implemented, the method includes:

[0037] Single grid power supply mode; when the rated output power of the main AC / DC converter 3 meets the power demand of the electric vehicle, the control switch S 3 Closed; the grid alone supplies power to the charging port 4 of the electric vehicle;

[0038] Simultaneous power supply mode of the grid and the expansion structure 1: when the electric vehicle charging demand power is greater than the rated output power of the main AC / DC converter 3, the control switch S 2 and S 3 Closed, so that the grid and the expansion structure 1 supply power to the charging port 4 of the electric vehicle at the same time.

[0039] Further, in this embodiment, it also includes: self-charging mode: when there...

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Abstract

The invention discloses an electric vehicle charging system with multiple charging modes and a charging method, belongs to the technical field of electric vehicle charging, and solves the problem of incapability of meeting high-power charging demands or quick charging demands of electric vehicles due to limiting from voltage conversion devices in traditional battery charging stations. Electric energy of a power grid is stored in an expansion structured battery set through an AC / DC converter. When the electric vehicles need to be quickly charged, the power grid and the expansion structured battery set charge the electric vehicles at the same time; when the electric vehicles are slowly charged, the expansion structured battery set is charged by the power grid; when the electric vehicles aredifferent in charging power demands, demanded power of the electric vehicles is judged to be higher than rated output power of a conversion device or not; and if so, the expansion structure and the power grid supply electricity together. The system is suitable for being as electric vehicle charging piles.

Description

technical field [0001] The invention relates to an electric vehicle energy storage charging system, which belongs to the technical field of electric vehicle charging. Background technique [0002] In today's world, people are paying more and more attention to environmental issues. In order to improve the environment, there has been a worldwide consensus on the use of clean energy, especially the use of electric vehicles to replace fuel vehicles to reduce emissions of air pollutants. However, with the increase in the use of electric vehicles, the requirement for an increase in the cruising range of the electric vehicle is particularly obvious, and the cruising range of the battery is usually increased by increasing the battery capacity. However, the charging time of the battery in this way is long, which affects people's use of the car. Therefore, greatly shortening the charging time is an important direction for the development of the current battery charging technology. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L53/14B60L53/50B60L53/60B60L53/00
CPCB60L53/00B60L53/14B60L53/50B60L53/60Y02T10/70Y02T10/7072Y02T10/72Y02T90/12Y02T90/14
Inventor 吴晓刚王昊陈继忠
Owner HARBIN UNIV OF SCI & TECH
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