AC and DC charging method for electric mobile charging vehicle

Abstract

The invention relates to an AC and DC charging method for an electric mobile charging vehicle. According to the method, when supplementing energy in a trough electricity period, by calculating and controlling the charging power, the total trough electricity duration is fully used to the greatest extent. Specifically, when supplementing energy for a power battery of the electric mobile charging vehicle by continuously adopting a DC charging mode within the range of the trough electricity duration, the DC charging power is reasonably controlled to ensure that the power battery is fully charged after the trough electricity period ends; and when supplementing energy for an energy storage battery of the electric mobile charging vehicle by continuously adopting an AC charging mode within the range of the trough electricity duration, the AC charging power is reasonably controlled to ensure that the energy storage battery is fully charged after the trough electricity period ends. By adopting the charging method disclosed by the invention, the damages caused by long-time high-current charging to the battery can be reduced, the charging cost can be reduced, the characteristics of low electricity price and long time in the nighttime trough period can be fully utilized, the service life of the battery can be prolonged, and the economic performance of the electric mobile charging vehicle can be improved.

Description

technical field [0001] The invention relates to a charging method for an electric mobile charging vehicle, in particular to an AC and DC charging method for an electric mobile charging vehicle. Background technique [0002] The state implements a supportive electricity price policy for the electricity consumption of electric vehicle charging and swapping facilities, and charging facilities implement different electricity prices according to their nature and location. For the operational centralized charging and swapping facilities that directly report to the power grid operating enterprises for installation and connection, the large-scale industrial electricity price will be implemented, with a charge of 0.457 yuan per kilowatt-hour of electricity at night and about 0.9 yuan during the day. Charging facilities set up in party and government agencies, enterprises and institutions, and social public parking lots implement "general industrial and commercial and other" electrici...

AI Technical Summary

Problems solved by technology

However, electric mobile charging vehicles not only need to replenish energy for the energy storage battery, but also need to replenish energy for their own power batteries. If you choose the fast charging method when replenishing energy, you need more than two DC charging piles; If the charging pile is replenished, the charging time will be very long. When the mobile charging vehicle is required to quickly respond to user needs, the service quality of the mobile charging vehicle will be reduced.

Images