Power failure protection method for electric vehicle power supply pile

Abstract

The invention discloses a power-down protection method for an electric vehicle power supply pile, which specifically includes the following steps: first, the power supply pile is turned on, and a single-chip microcomputer monitors the operation status of each power supply port; In the third step, when the power supply pile is cut off, the server will take the data received last time before the power cut off and the data forwarded to represent the status of all power supply ports as a large data packet; the fourth step , when the power of the power supply pile is restored, the server sends the data packet in the third step to the single-chip microcomputer of the power supply pile; in the fifth step, the single-chip microcomputer starts to work with the data in the big data packet. The data written by the power supply pile after the power supply of the present invention is restored has only a small time deviation compared with that before the power failure, which is negligible for the state of the power supply, that is, the written data can better represent the data before the power failure. The operating state of the power supply pile improves the stability of charging after repowering.

Description

technical field [0001] The present invention relates to the field of electric vehicle power supply piles, and more specifically, to a power failure protection method for electric vehicle power supply piles. Background technique [0002] For external power supply facilities such as battery car power supply piles, power failure protection is an essential function. It is used to protect the device data when the device loses the external power supply, so that the device can resume normal operation when the external power supply is restored. [0003] At present, the battery car power supply piles on the market do not have the power-down protection function or use the instantaneous detection method for power-down protection. The common method of instantaneous detection is to rely on batteries or large capacitors, which are assisted by software and hardware facilities, so that the equipment can properly back up the running data after the external power supply is lost, reset some ke...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing electric vehicle power supply pile has no power-down protection function or when the conventional instantaneous detection method is used for power-down protection, the problem of incomplete data storage is easy to occur. A method based on the MQTT protocol is proposed. Send the operation data to the server for storage, and extract the data when the device restores the external power supply, so that the device can work normally again. The power-down protection method of the electric vehicle power supply pile. This method can realize the power-down protection function of the device and reduce the number of electric vehicle power supply piles. The volume greatly reduces the error rate of saved data

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