Household electric vehicle DC charging device

Abstract

The invention relates to a household electric vehicle DC charging device which comprises a 220V AC input interface, a power sensor, an AC / DC converter, a central controller, an energy storage module,a DC / DC converter, a DC charging gun and a gun pull sensor. The 220V AC input interface is connected to the AC / DC converter through the power sensor. The AC / DC converter is connected to the energy storage module and the DC / DC converter through the central controller, the energy storage module is connected to the DC / DC converter which is connected to the DC charging gun through the gun pull sensor.According to the household electric vehicle DC charging device, the energy storage module is used to store electric energy in idle time, when charging is needed, a grid and the energy storage moduleare used to carry out DC charging on an electric vehicle together, the requirement of distribution network power supply power in DC charging is reduced, the DC quick charging of the electric vehicle can be realized in a conventional home electric grid, the efficiency of the home charging of the electric vehicle can be greatly improved, and the convenience of the home charging is improved.

Description

technical field [0001] The invention relates to a charging device for electric vehicles, in particular to a DC charging device for household electric vehicles. Background technique [0002] As the country vigorously promotes the application of new energy vehicles and the technology of new energy vehicles is becoming more and more mature, it has become an inevitable trend for electric vehicles to enter millions of households, and the charging facilities as the source of energy supply for electric vehicles are particularly important. At present, the construction level of electric vehicle charging public facilities in my country is relatively low, and the supply of public charging supporting facilities is seriously insufficient, which makes home charging the main way of energy supply for electric vehicles. [0003] As we all know, there are mainly two charging methods for electric vehicles: AC charging and DC charging. The charging efficiency of the former is low, and the charg...

AI Technical Summary

Problems solved by technology

However, due to the small current of general household electricity, it is impossible to directly meet the input power requirements required for DC charging, and it is very difficult to transform the distribution network to meet the power supply requirements of DC charging, resulting in most electric vehicle owners only Can use AC charging as the only way to charge at home

The inability to use DC charging in home charging makes the energy of electric vehicles unable to be quickly replenished, which seriously affects the convenience of electric vehicle owners.

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