Charge variable current protector

Abstract

The invention relates to a charge variable current protector which comprises a control device which is independent of a power supply inside a car. The control device comprises a shell, a replaceable current input plug which is connected with an outside power grid power supply and a replaceable current output plug which is connected with a charging device are arranged on the shell, and a charge protective circuit is arranged in the shell. The charge variable current protector is simple in structure and has functions of stabilizing integrated power grid isolating voltage and converting large-power alternating current. Different measures can be taken for different faults, two redundant disconnecting protection systems which do not interfere with each other are arranged in a redundant disconnecting module when disastrous faults occur, and a first operation amplifier and a second operation amplifier can timely handle the disastrous faults. In addition, current input and output interfaces can be replaced at any time, various devices needing to be charged can be charged, and the charge variable current protector is widely applicable.

Description

technical field [0001] The invention relates to the field of charging protection, in particular to a charging converter protector. Background technique [0002] At present, hybrid vehicles, electric vehicles and extended-range electric vehicles are the main development directions of new energy vehicles. Since the above-mentioned new energy vehicles all need to be charged, the above-mentioned new energy vehicles are generally equipped with charging equipment. In order to ensure the safety of the vehicle charging equipment when charging, it is necessary to set up a corresponding charging equipment protection device. However, the charger protection device in the prior art is generally integrated inside the charged device, and the charged side is generally not isolated from the power grid. Once a short circuit or overcurrent occurs in the power grid circuit, the protection device inside the device often cannot be effectively cut off in time. At the same time, it is impossible t...

AI Technical Summary

Problems solved by technology

However, the charger protection device in the prior art is generally integrated inside the charged device, and the charged side is generally not isolated from the power grid. Once a short circuit or overcurrent occurs in the power grid circuit, the protection device inside the device often cannot be effectively cut off in time. At the same time, it is impossible to monitor the charging state in real time and intuitively, which is prone to danger and causes huge damage to personal and property

[0003] In addition, the current interface standards for electric vehicles or charging equipment are inconsistent, and some existing individual protectors cannot adapt to charging equipment with different interfaces, which causes a lot of inconvenience in practical applications

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