Energy storage system for charging electric vehicle

Abstract

The invention discloses an energy storage system for charging an electric vehicle. The energy storage system comprises a power supply network, wherein the power supply network is connected with a charger with an energy storage device; the charger with the energy storage device is connected with the electric vehicle and comprises a charger body which is connected with the power supply network and the electric vehicle; the charger is also connected with the energy storage device; and the energy storage device is controlled through a micro control unit. The energy storage device is added to the front end of an existing direct-current charging system; when the power network is powered off, the electric energy of the energy storage device is input into the direct-current charging system, so that uninterruptible power supply of an electric vehicle charging system is achieved; when the power network is normal, the electric energy is directly input into the direct-current charging system from a bypass; and meanwhile, when the energy storage device is short of electricity, the control unit transmits a signal and a switch at an input end of the energy storage device is turned off, so that the target of charging the energy storage device is achieved.

Description

【Technical field】 [0001] The invention belongs to the field of electric vehicle charging, and in particular relates to an electric vehicle charging energy storage system. 【Background technique】 [0002] With the progress of society and the enhancement of environmental protection awareness, electric vehicles are gradually favored because they are powered by vehicle-mounted power supplies and can solve the problems of exhaust emissions from fuel vehicles, pollution of the environment, and high energy consumption. And the charging problem of electric vehicle is the problem that people pay close attention to very much, and it is related to popularization and promotion of electric vehicle. [0003] The input of the electric vehicle charging system is the low-voltage output 380V of the substation. When the power supply grid is suddenly disconnected, the power input of the entire electric vehicle charging system will be interrupted, which will cause at least two effects. 1. The e...

AI Technical Summary

Problems solved by technology

When the power supply grid is suddenly disconnected, the power input of the entire electric vehicle charging system will be interrupted, which will cause at least two effects

1. The electric car that is being charged cannot continue to be charged, and at the same time, due to a power outage, the charging power of the electric car cannot be uploaded to the cloud background

2. Electric vehicles waiting to be charged cannot be charged normally

The power outage of the charging station and the sudden cut off of the output of electric energy will greatly affect the enthusiasm of electric vehicle users and affect the promotion of electric vehicles in the future.

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