Battery charging data storage and extraction method

Abstract

The invention relates to a battery charging data storage and extraction method. The method includes the steps that a voltage interval value is set according to different battery types; an initial voltage data value and an initial capacity data value at the work starting time of a battery management system are recorded, and a real-time voltage value and a real-time capacity data value are stored ina buffer area of the battery management system; when it is met that the absolute value of the result obtained by subtracting a former recorded voltage data value from the real-time voltage value is larger than or equal to the preset voltage interval value, calculation is conducted to obtain a capacity increment peak value, and the real-time voltage value and the capacity increment peak value arestored in a permanent storage area of the battery management system or a background server until the battery is full; interpolation of the real-time voltage value and the capacity increment peak valuedata is conducted, and interpolation function recovery is obtained through the Lagrangian interpolation method.

Description

Technical field [0001] The invention relates to a method for storing and extracting battery charging data, and belongs to the technical field of battery charging data management. Background technique [0002] Rechargeable batteries are batteries that can be recharged and used. The charging of rechargeable batteries has always been the focus of people’s concern. The correct and good charging method and the management of charging data can ensure the normal operation and service life of the battery. With the progress of society, electric Automobiles are gradually entering people’s lives. Electric vehicles are powered by on-board power supplies and use motors to drive wheels. The electric drive and control system on electric vehicles is the core of electric vehicles. The electric drive and control system consists of driving motors, power supplies, and The motor speed control device and other components; the driving power of the motor comes from the on-board rechargeable battery or ot...

AI Technical Summary

Problems solved by technology

[0002] Rechargeable batteries are batteries that can be recharged and utilized. The charging of rechargeable batteries has always been the focus of people's concern. Correct and good charging methods and management of charging data can ensure the normal operation and service life of batteries. With the progress of society, electric Cars gradually enter people's lives. Electric vehicles refer to vehicle-mounted power supplies as power and motor-driven wheels. The electric drive and control system on electric vehicles is the core of electric vehicles. The electric drive and control system consists of drive motors, power supplies and The motor speed control device and other components; the driving power of the motor comes from the on-board rechargeable battery or other energy storage devices. Therefore, the on-board power supply is a very important component, and the electric drive and control system needs to obtain some information about the on-board power supply in order to facilitate Manage the on-board power supply to ensure the safety of the on-board power supply when it is working or charging, which causes the electric drive and control system to obtain a lot of data sent by the on-board power supply, among which the amount of charging data is particularly large, resulting in electric drive and The control system and electric vehicle safety monitoring platform are faced with the pressure of massive data storage; the traditional charging data recording method is the equal time interval method, which usually records the current voltage and charging capacity every 1 second to obtain a battery charging curve (V-Q curve ); the problem with the equal time interval method is that the amount of data is too large, the current number of electric vehicles is increasing rapidly, and the electric vehicle safety monitoring platform is facing the pressure of massive data storage, so it is necessary to reduce the amount of data and ensure data storage of key information

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