Charging gun plugging state detection circuit and charging system of low-voltage electric vehicle
A state detection and charging gun technology, which is applied in electric vehicle charging technology, electric vehicles, charging stations, etc., can solve problems such as misoperation of vehicle insertion guns and inability to feedback the plugging and unplugging status of charging guns, achieving good reliability and ensuring normal operation. Startup, good security effect
Active Publication Date: 2021-01-01
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
[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. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within 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 invention relates to a charging gun plugging state detection circuit and a charging system of a low-voltage electric vehicle, the charging gun plugging state detection circuit comprises a transistor Q1, the first end of the transistor Q1 is connected with a gear voltage signal IGON, the second end of the transistor Q1 is connected with a gun plugging signal CC2, and the third end of the transistor Q1 is connected with a low-voltage signal A + of an off-board charger; and the third end outputs a plugging state signal Splug. According to the charging gun plugging state detection circuit provided by the invention, misoperation of vehicle gun plugging starting is effectively prevented, and the safety is better.
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