Energy storage type intermittent vehicle power supply system and power supply method

Abstract

The invention relates to the technical field of energy storage vehicle charging, and discloses an energy storage type intermittent vehicle power supply system which comprises a transformer, a rectifier, a first DC / DC module, an energy storage device, a second DC / DC module, a plurality of isolation switches and power supply rails correspondingly connected with the isolation switches. The first DC / DC module is used for charging the energy storage device through preset low power when the vehicle does not enter a station; and the second DC / DC module is used for outputting electric energy to the to-be-charged vehicle when the to-be-charged vehicle enters the station. In the invention, a capacity of the energy storage type vehicle charging system connected to the power supply system is effectively reduced, and expenditure cost of a capacity electricity price is decreased for users; the capacity of the transformer can be reduced, and a loss during no load is decreased; in addition, the systemcan adopt AC380V to charge the vehicle, and a problem that a special power supply line needs to be erected in some scenes is solved; and finally, the energy storage device in the power supply systemreduces dependence on a power supply network when the vehicle is charged.

Description

technical field [0001] The invention relates to the technical field of energy storage vehicle charging, in particular to an energy storage intermittent vehicle power supply system and a power supply method. Background technique [0002] Energy storage trams can absorb the regenerative braking energy of vehicles as much as possible due to their full-line operation without catenary. New energy vehicles can well solve the pollution problems caused by exhaust emissions in cities and the fuel consumption problems of vehicles in standby. Energy vehicles are becoming more and more popular in the market. At present, the power supply system of energy storage vehicles is still connected through high voltage, and then directly charges the energy storage vehicles in step-down, rectification, and step-down DCDC. The charging capacity of the vehicle is large, and at the same time, the installed capacity of the industrial power supply is charged based on the power capacity, which increases...

AI Technical Summary

Problems solved by technology

[0002] Energy storage trams can absorb the regenerative braking energy of vehicles as much as possible due to their full-line operation without catenary. New energy vehicles can well solve the pollution problems caused by exhaust emissions in cities and the fuel consumption problems of vehicles in standby. Energy vehicles are becoming more and more popular in the market. At present, the power supply system of energy storage vehicles is still connected through high voltage, and then directly charges the energy storage vehicles in step-down, rectification, and step-down DCDC. The charging capacity of the vehicle is large, and the installed capacity of the industrial power supply is charged according to the power capacity, which increases the operating cost of the vehicle.

Moreover, the current power supply system is highly dependent on the power supply network. When the power supply network fails or the power is cut off, there is no way to provide power again.

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