A processing method for preventing abnormal data storage in bms system

Abstract

The invention relates to a processing method for preventing abnormal data storage in a BMS system. The processing method for preventing BMS system data storage abnormality includes, the method includes, step S1: real-time monitoring of the power supply status of the current BMS system; step S2: judging whether power supply fluctuations occur in the power supply status, if no power supply fluctuations occur, then enter the step S3, if there is power supply fluctuation, it is forbidden to store data; Step S3: collect the voltage value of the current BMS system in real time, if the voltage value is within the preset voltage range, then store the data of the BMS system by category, if the voltage value exceeds the preset It is prohibited to store data within the range of the voltage range; the judging whether power supply fluctuations occur in the power supply state is specifically, if the power supply state meets the preset conditions within the preset time, then the power supply system has power supply fluctuations; the process of preventing abnormal data storage in the BMS system The method can effectively avoid the situation of storing errors, effectively improve the accuracy and effectiveness of power supply data, and facilitate popularization and use.

Description

technical field [0001] The invention belongs to the technical field of battery management systems for new energy vehicles, and in particular relates to a processing method for preventing abnormal data storage in a BMS system. Background technique [0002] At present, lithium batteries are mainly used as energy sources for new energy vehicles. Although they have many advantages, if they are used improperly, overcharging and overdischarging, etc., they will cause great damage to the battery, and be careful about overheating and burning. Therefore, BMS is particularly important for the protection of new energy lithium batteries, especially the data obtained by BMS during driving. [0003] At present, the BMS generally saves the data in the off-chip FLASH or EEPROM. Usually cycle storage and storage when the ignition gear is switched from ON to OFF, these two methods coexist. [0004] The current storage technology is no problem in normal vehicle conditions, but when the vehic...

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Problems solved by technology

[0004] The current storage technology is no problem in normal vehicle conditions, but when the vehicle power supply is unstable, the power supply line is poorly connected, and the voltage of the power supply battery is very low, because the external storage takes a long time, there is a probability that the storage has not been completed. Power failure, that is, only part of the data is stored, resulting in abnormal storage. For example, SOC is 5% but it is stored as 100%, SOH98% is stored as 3%, and the balance remaining time is 5 minutes but it is stored as 1h

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