Transistor based charge control guide circuit of electric vehicle

Abstract

The invention discloses a transistor based charge control guide circuit of an electric vehicle conforming to national standards, and belongs to the field of electric vehicles. The transistor based charge control guide circuit comprises a power supply connection detecting module, a level conversion module and a level detecting module; a connection state between a power supply plug and a power supply socket is judged according to the output voltage of the power supply connection detecting module; the level conversion module takes the transistor as the main device for receiving PWM signals output by a power supply control apparatus and converting the PWM signals into plus or minus 12V PWM signals according to national standards; and the level detecting module maintains the voltage peak value output by the level conversion module to enable the power supply control apparatus to collect the voltage peak value so as to judge a connection state of a charging interface and a state of a vehicle control apparatus based on the voltage peak value, when conditions are met, the power supply control apparatus charges the electric vehicle. The level detecting module of the transistor based charge control guide circuit has the functions of maintaining the voltage pack value and improving the load drive capacity; and in addition, the devices adopted by the transistor based charge control guide circuit are low in cost, so that the transistor based charge control guide circuit is low in costs and has promotional value.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and in particular relates to a transistor-based electric vehicle charging control guiding circuit. Background technique [0002] With the increasing popularity of electric vehicles, the application of electric vehicle charging systems is increasing, and the safety and reliability of its charging process are of paramount importance. Before charging an electric vehicle, it is first necessary to confirm whether the vehicle interface of the electric vehicle is properly connected to the power supply interface. If the vehicle interface is not properly connected to the power supply interface but is still being charged, it will easily lead to waste of energy, and sometimes even cause danger. When electric vehicles are charging, they also need to monitor the charging process in real time, and when abnormal conditions occur, the power should be cut off immediately. In the prior art, the electric vehicle ...

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Problems solved by technology

In the prior art, the electric vehicle charging control pilot circu

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