Bidirectional power supply system for bus electric charging station

Abstract

The invention provides a bidirectional power supply system for a bus electric charging station. The system is composed of a plurality of bidirectional charging devices and a plurality of battery management systems. Each battery management system is connected with a bus electric charging station and is connected with one bidirectional charging device. The bidirectional charging devices are connected with a grid and a vehicle-mounted battery. The battery management systems consist of intelligent switch detection units, SOC checking units, control units, and communication units. The bidirectional charging devices include charging device communication units, charging device control units, battery charging units, and grid supply units. According to the bidirectional power supply system provided by the invention, on the basis of information interconnection of a bidirectional power supply device and the battery management systems (BMS), power is provided for the grid during a high-electricity-price period and the vehicle-mounted battery is charged during a low-electricity-price period, so that the operation benefits of the electric bus can be increased.

Description

technical field [0001] The invention relates to a two-way power supply system for a public switching station and relates to the field of power supply for a public switching station. Background technique [0002] Electric buses mainly refer to pure electric buses powered by on-board power supply, all of which use electric energy to drive. This type of product has low noise, high driving stability, and zero emissions. It will be promoted in the future. Like a gas station in a traditional bus system. When the on-board battery of the bus is low, it will be replaced at the centralized battery exchange station. The battery exchange station will provide it with a fully charged battery and place the replaced battery with a low SOC (State Of Charge) in a unified charging device. Charge. However, the existing public switching stations ignore the use of the stored electricity in the vehicle battery, and the electricity price is high during the peak period of urban electricity consump...

AI Technical Summary

Problems solved by technology

The interconnection between the power grid and the battery swap station, according to the changes in electricity prices at different times, can either charge the grid to the vehicle battery pack in the battery swap station, or return the electricity in the vehicle battery in the battery swap station to the grid. At present, this scheme has not been mentioned yet.

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