Charging control system for electric vehicles and electric vehicles having the same

Abstract

The invention proposes a charging control system for electric vehicles, which includes: a charging and discharging socket; a three-level bidirectional DC / AC module; a charging and discharging control module; a filter module; and a controller module; wherein, when the external power grid adopts an angular connection mode, And when the current working mode of the electric vehicle is the charge and discharge mode, the controller module controls the charge and discharge control module to close, and uses the connection midpoint of the filter capacitor in the filter module as a reference point to sample the voltage output by the external power grid. , and control the three-level bidirectional DC / AC module according to the sampled voltage so that the external power grid charges the power battery. The charging control system can adapt to different power grid systems to charge electric vehicles and has strong versatility. It also adopts three-level control and reduces the number of DC‑DC modules, enabling high-power charging with high charging efficiency and short charging time. The invention also proposes an electric vehicle with the charging control system.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an electric vehicle charging control system and an electric vehicle with the charging control system. Background technique [0002] With the development of science and technology, environmentally friendly and energy-saving electric vehicles are playing the role of replacing fuel vehicles. However, the popularization of electric vehicles still faces some problems. Among them, high mileage and fast charging technology have become a major problem in the promotion of electric vehicles. [0003] At present, most electric vehicles use large-capacity power batteries. Although this can improve the battery life of electric vehicles, the same large-capacity power batteries also bring about the problem of long charging time. Although professional AC charging stations can quickly charge batteries, the high cost and large footprint make it difficult to popularize such infrastructur...

AI Technical Summary

Problems solved by technology

Although professional AC charging stations can quickly charge batteries, the high cost and large footprint make it difficult to popularize such infrastructure. At the same time, due to the limited space of vehicles, the The charger is limited by the size and cannot meet the charging power

[0004] In addition, the traditional electric vehicle charging needs to use a dedicated charging pile, and the traditional electric vehicle charging system needs to build different circuits according to the different wiring modes of the external power grid to achieve charging, which requires a large hardware cost, while the current electric vehicle The current three-phase charging system is only suitable for star connection, and the versatility is not good

Images