BMS battery management system
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Preface
The development of battery cells also occupies a large part in the new energy industry. Let’s take a look at the demand data for battery cells.
1. What basic data is there?
The basic data mainly includes
the cut-off voltage of charge and discharge, which we understand is usually 2.7-4.2 or 2.5-3.65. The
relationship table between soc and open circuit voltage ocv.
The basic data is mainly oriented to the basic model and basic algorithm, that is, using some simple tables.
However, advanced data is mainly used for the development of adaptive algorithms, which will be introduced later. Let’s take a closer look at these basic data
2. Basic data analysis
1. Cut-off voltage for charging and discharging
2.SOC-OCV relationship table
The soc-ocv relationship table is a very classic data table. It mainly serves SOC estimation (initialization) SOP (estimate) SOH (estimate) internal temperature estimation. This involves
some capacity calculations, etc. We will learn more about battery cells later. Will make supplements from time to time
3. Charge and discharge current limit table
4. Charge and discharge capacity characteristics
5.Self-discharge rate
Summarize
The data written above and his BMS services require formulas and professional knowledge to practice. It is not enough to just master the theory