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A transistor-based charging control steering circuit for electric vehicles

A technology for electric vehicles and pilot circuits, which is applied to electric vehicles, battery circuit devices, circuit devices, etc., can solve the problems of complex pilot circuits and unfavorable costs, and achieve the effects of low price, cost saving, and good promotion value.

Inactive Publication Date: 2018-07-03
QINGDAO UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the electric vehicle charging control pilot circuit is relatively complicated, which is not conducive to cost saving

Method used

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  • A transistor-based charging control steering circuit for electric vehicles

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Embodiment Construction

[0019] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments:

[0020] like figure 1 As shown, a transistor-based electric vehicle charging control guide circuit includes: a power supply connection detection module 100, a level conversion module 200 and a level detection module 300; wherein:

[0021] The power supply connection detection module 100 is used to output voltage to the power supply control device 400. The power supply connection detection module 100 includes a first resistor R1, one end of the first resistor R1 is connected to the first power supply voltage of +12V, and the other end is connected to the power supply socket. Connected via CC (Charging Connection Confirmation) cable. When the power supply plug is connected to the power supply socket, the output voltage of the power supply connection detection module 100 is 0V; when the power supply plug is not connected to the power supply s...

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Abstract

The invention discloses a transistor-based charging control guide circuit for electric vehicles that meets national standards, belongs to the field of electric vehicles, and includes a power supply connection detection module, a level conversion module and a level detection module. According to the output voltage of the power supply connection detection module, the connection state of the power supply plug and the power supply socket is judged; the level conversion module uses the transistor as the main device, receives the PWM signal output by the power supply control device, and converts it into an amplitude of ±12V according to the national standard The PWM signal; the level detection module keeps the voltage peak value output by the level conversion module for the power supply control device to collect the voltage peak value and judge the connection status of the charging interface and the state of the vehicle control device accordingly. When the conditions are met, the power supply control device Powering electric vehicles. The level detection module of the present invention has the function of maintaining the voltage peak value and improving the load driving ability, and the device adopted by the present invention is low in price, saves cost and has popularization value.

Description

technical field [0001] The invention belongs to the field of electric vehicles, in particular to a transistor-based electric vehicle charging control steering circuit. Background technique [0002] With the increasing popularity of electric vehicles, there are more and more applications of electric vehicle charging systems, and the safety and reliability of the charging process are very important. Before charging an electric vehicle, it is first necessary to confirm whether the vehicle interface of the electric vehicle and the power supply interface are properly connected. If the vehicle interface and the power supply interface are not properly connected but still charging, it will easily lead to waste of energy, and sometimes even lead to danger. Electric vehicles also need to monitor the charging process in real time when charging, and power off immediately when an abnormal situation occurs. In the prior art, the electric vehicle charging control and steering circuit is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
Inventor 王冬青叶志明张震王向东
Owner QINGDAO UNIV
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