Bidirectional charging and discharging system and method for electric vehicle and electric vehicle

Abstract

The invention belongs to the field of electric vehicles, and particularly relates to a bidirectional charging and discharging system and method for an electric vehicle and the electric vehicle, and the bidirectional charging and discharging system comprises a vehicle-mounted slow charging socket end and a vehicle-mounted control module; and the vehicle-mounted slow charging socket end is connected with an automobile bus, so that the vehicle-mounted control module transmits and receives a control instruction through the vehicle-mounted slow charging socket end to control the charging process or the discharging process of the battery unit. The vehicle-mounted slow charging socket end is connected with the vehicle bus to serve as a communication interface, so that the vehicle-mounted slow charging socket end has a communication function, can communicate with a control end, receives a control instruction to perform bidirectional charging and discharging, and fully utilizes an electric vehicle as a dispersed electrochemical energy storage resource.

Description

technical field [0001] The invention belongs to the technical field of new energy, and in particular relates to a bidirectional charging and discharging system and method for an electric vehicle and the electric vehicle. Background technique [0002] Since 2008, my country's energy consumption has been ranked first in the world. In 2019, my country's primary energy consumption reached 1417 trillion joules, which is 1.5 times that of the second-ranked United States, 1.7 times that of European countries, and 1.7 times that of the remaining countries. The sum of the top ten countries in the world in terms of primary energy consumption. [0003] In 2020, my country's oil consumption will reach 702 million tons, a 35% increase from 2014, while imports will also increase by 50% to 542 million tons, with an external dependence of 77.21%. The consumption of natural gas in 2020 will be 325 billion cubic meters, an increase of 72.8% compared with 2014, the import volume will increase ...

AI Technical Summary

Problems solved by technology

[0018] In order to solve the problem in the existing technology that there is no communication channel at the slow charging interface of electric vehicles, the battery on the electric vehicle cannot be used as an electrochemical energy storage resource to receive control instructions, and charge from the grid or discharge to the grid according to the grid dispatching instructions to assist photovoltaics and wind power development, the embodiments of the present invention provide the following technical solutions:

Images