Charging gun plug state detection circuit and low voltage electric vehicle charging system
A technology of state detection and charging gun, which is applied in the direction of electric vehicle charging technology, electric vehicles, charging stations, etc., can solve the problems of unable to feedback the plugging and unplugging status of the charging gun, misoperation of the vehicle plugging gun, etc., to ensure normal startup and reliability Good, the effect of ensuring the safety of starting
Active Publication Date: 2022-03-25
DONGFENG MOTOR CORP HUBEI
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[0005] The embodiment of the present application provides a charging gun plugging state detection circuit and a low-voltage electric vehicle charging system to solve the problem in the related art that the plugging state of the charging gun cannot be fed back after the fast charging is completed, which leads to the wrong start of the vehicle. operational technical issues
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[0027] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0028] see figure 1 As shown, the embodiment of the present application provides a detection circuit for plugging and unplugging the charging gun, which includes a transistor Q1, the first terminal of the transistor Q1 is connected to the gear voltage signal IGON, and the second terminal of the transistor Q1 is connected to the gun inse...
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The present application relates to a detection circuit for plugging and unplugging state of a charging gun and a charging system for a low-voltage electric vehicle. The plugging and unplugging state detection circuit for a charging gun includes a transistor Q1, the first end of which is connected to the gear position voltage signal IGON, and the second end of which is It is connected to the plug signal CC2, and its third terminal is connected to the low-voltage signal A+ of the off-board charger, and the third terminal outputs the plug state signal Splug. The detection circuit for plugging and unplugging state of the charging gun provided by the application can effectively prevent the misoperation of the vehicle starting with the plugging gun, and has better safety.
Description
technical field [0001] The present application relates to the technical field of electric vehicles, in particular to a detection circuit for plugging and unplugging states of charging guns and a charging system for low-voltage electric vehicles. Background technique [0002] With the huge pollution caused by traditional energy consumption to the environment, electric vehicles have developed rapidly in recent years. Among them, the application of low-voltage platform electric vehicles in driving test vehicles and other fields has attracted the attention of the automotive industry due to their low price, and their charging needs are mainly concentrated in fast charging. The output voltage range of fast charging piles defined by the current national standard is 200VDC to 750VDC, which has high requirements on the voltage of electric vehicle power batteries, which cannot meet the fast charging requirements of low-voltage platform electric vehicles. It is necessary to add a switc...
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IPC IPC(8): B60L53/60B60L53/16G01R31/69
CPCB60L53/60B60L53/16G01R31/69Y02T10/70Y02T10/7072Y02T90/12Y02T90/14
Inventor 雷闪张鹏佘建强刘宁郭浩
Owner DONGFENG MOTOR CORP HUBEI