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Electric vehicle V2G control method and device

A technology of electric vehicles and control devices, which is applied in the direction of electric vehicles, control devices, battery/fuel cell control devices, etc., can solve the problems of inability to perform accurate control, easily affect the normal use of users, and low accuracy of discharge control, and achieve Avoid over-discharge, avoid influence, improve the effect of accuracy

Pending Publication Date: 2021-10-08
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, most of the cars do not have the V2G function, and some electric cars with new V2G functions are only initially realizing the discharge to the power grid, and most of the realization methods are to discharge through the vehicle-mounted bidirectional charging and discharging motor or motor, which cannot for precise control
[0003] Therefore, the current V2G control strategy in the existing case has insufficient control accuracy, and the low accuracy of discharge control may easily affect the normal use of electric vehicles by users.

Method used

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  • Electric vehicle V2G control method and device
  • Electric vehicle V2G control method and device
  • Electric vehicle V2G control method and device

Examples

Experimental program
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no. 1 example

[0041] See figure 2 , which shows a V2G control method for an electric vehicle provided in the first embodiment of the present invention, which can be specifically applied to a battery management system. Specifically, the method includes:

[0042] Step S10: receiving a discharge instruction triggered by a user.

[0043] In step S10, after the vehicle stops at the V2G electric pile, the user can connect the DC adapter of the V2G electric pile to the charging port of the electric vehicle. After the DC gun is connected, the V2G electric pile confirms the status of the gun insertion, and wakes up the battery management system and the vehicle controller in the dormant state through a hard-line wake-up. First, the battery management system will enter the self-test, and when the self-test is passed, the battery management system can generate a status signal that the self-test is passed. The status signal is sent to the vehicle controller, so that the vehicle controller enters the ...

no. 2 example

[0077] see image 3 , based on the same inventive concept, the second embodiment of the present invention provides a V2G control device 300 for an electric vehicle. The electric vehicle V2G control device 300 includes:

[0078] The receiving module 301 is used to receive the discharge instruction triggered by the user; the generation module 302 is used to generate discharge parameters based on the discharge instruction and the user's car demand; the sending module 303 is used to send the discharge parameters to V2G electric pile, so that the V2G electric pile receives the scheduling instruction of the grid energy management platform in real time; the discharge module 304 is used to control the power battery of the electric vehicle to discharge based on the scheduling instruction; the stop module 305 is used to obtain the discharge in real time stop signal, and control the power battery to stop discharging based on the discharge stop signal.

[0079] As an optional implementa...

no. 3 example

[0091] Based on the same inventive concept, the third embodiment of the present application is also a V2G control device for electric vehicles, including: a battery management system, a vehicle-machine system, and a vehicle controller; wherein:

[0092] The in-vehicle system is configured to generate a discharge instruction according to a user's trigger operation; the battery management system is configured to receive the discharge instruction triggered by the user, and generate a discharge instruction based on the discharge instruction and the user's vehicle demand. parameters; the battery management system is also used to send the discharge parameters to the V2G electric pile, so that the V2G electric pile can receive the scheduling instruction of the power grid energy management platform in real time; the battery management system is also used to The dispatching instruction controls the power battery of the electric vehicle to discharge; the battery management system is also...

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PUM

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Abstract

The invention discloses an electric vehicle V2G control method and device. The method comprises the steps: receiving a discharging instruction triggered by a user; generating a discharge parameter based on the discharge instruction and the vehicle use demand of the user; sending the discharge parameter to a V2G electric pile, so that the V2G electric pile receives a scheduling instruction of a power grid energy management platform in real time; controlling a power battery of the electric vehicle to discharge based on the dispatching instruction; and acquiring a discharge stop signal in real time, and controlling the power battery to stop discharging based on the discharge stop signal. According to the method, control is more accurate in the V2G discharge participation process, the grid connection quality is improved, and meanwhile, the influence of V2G discharge participation on normal vehicle use of a user is avoided.

Description

technical field [0001] The present invention relates to the technical field of electric vehicles, in particular to a V2G control method and device for electric vehicles. Background technique [0002] V2G (Vehicle-to-grid, vehicle-to-grid) technology can realize the two-way interaction of energy and information between the grid and electric vehicles. The relationship between electric vehicles and the grid in the sense of transmission is a one-way relationship. Electric vehicles obtain electric energy from the grid, and the information interaction between electric vehicles and the grid is limited to a few signal interactions related to charging. Based on V2G technology, electric vehicles not only obtain electrical energy from the grid, but also send electrical energy to the grid. The reasonable discharge of electric vehicles under the dispatch of the power grid can provide the power grid with the functions of peak regulation, frequency regulation and stable power system secur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L55/00B60L58/14
CPCB60L55/00B60L58/14B60L2240/54Y02T10/70
Inventor 苍松赵征澜史来锋
Owner DONGFENG MOTOR GRP
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