Charging pile main controller based on Internet of Things

Abstract

The invention discloses a main controller for charging a charging pile based on the Internet of Things, and the main controller comprises a central control module, a power socket, a key, a display screen, a loudspeaker, an indicating lamp, an Ethernet interface, an RS485 interface, a debugging interface, and an antenna, wherein a CAN communication module is disposed between the central control module and the RS485 interface; and the CAN communication module is used for realizing signal transmission between the central control module and the RS485 interface. In the interface protection circuit,a fourth resistor and a fifth resistor are used for absorbing a surge current, a fourth capacitor and a sixth capacitor are used for absorbing a surge current for the second time, a fifth capacitor is used for filtering interference differential-mode signals, a common-mode inductor is used for filtering common-mode signals, and a second resistor, a third resistor and a seventh capacitor form an RC filter circuit. Interference signals on the bus can be further filtered, and safety and stability of CAN communication are achieved; effective isolation of external communication signals is achievedin a signal isolation circuit, and the reliability of the main controller is improved.

Description

technical field [0001] The invention relates to the technical field of charging piles, in particular to a main controller for charging charging piles based on the Internet of Things. Background technique [0002] In the existing charging pile charging system, the main controller controls each charging pile, cooperates with the external communication terminal to realize remote intelligent monitoring, and realizes the effect of the Internet of Things. [0003] Most of the main controllers of existing charging piles use CAN communication to realize signal connection with external charging piles, but it is well known that when the charging system is running, each charging pile and the main controller need to be isolated and cannot Because one of the charging piles failed, the entire charging pile network failed, affecting charging. Therefore, the electrical isolation between the CAN bus of the main controller and the charging pile is very important. [0004] To this end, a mai...

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Problems solved by technology

[0003] Most of the main controllers of existing charging piles use CAN communication to realize signal connection with external charging piles, but it is well known that when the charging system is running, each charging pile and the main controller need to be isolated and cannot Because one of the charging piles failed, the entire charging pile network failed, affecting charging

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